TWI718657B - Low-duty-type power generation abnormality detection method and system for photovoltaic panels - Google Patents

Abstract

A low-duty-type power generation abnormality detection method includes: operating a power converter to measure a first reference voltage and a first reference current between a first near-MPP point and a near-Isc point of a solar cell module which are calculated to obtain a first reference power to compare with first abnormal PV-curve features; alternatively, operating the power converter to measure a second reference voltage and a second reference current between a second near-MPP point and a near-Voc point of the solar cell module which are calculated to obtain a second reference power to compare with second abnormal PV-curve features.

Description

Lightweight solar panel power generation abnormal test method and system

The present invention relates to a light-weight (low-duty-type) solar panel power generation abnormality test method and system thereof; in particular, it relates to a lightweight or simplified solar panel power generation abnormality [failure, aging or obscuration] preliminary test method And its system, and subsequently combined with the implementation of an advanced test method and system for solar panel power generation abnormalities; more particularly, it relates to a lightweight type suitable for using a power converter (power converter) or an inverter (inverter) to execute data Or data-simplified solar panel power generation abnormal test method and system.

Another conventional solar panel power generation anomaly detection method and system, such as the invention patent of the Republic of China Patent Publication No. TW-I630790 "Solar Power Generation System and Solar Module Power Generation Abnormality Detection Method", which discloses the solar power generation system and the solar module Group power generation abnormality detection method, the detection method includes the steps: A. It is electrically connected to an inverter of a solar module string, and an audio signal is input to a power circuit of the solar module string; B. A coupled receiver is used to sense and receive the audio signal transmitted in the power loop, and the coupled receiver is displaced along the power loop; and C. Use the coupled receiver to correspondingly output a prompt message according to the sensing result of the audio signal, and The human body can perceive the prompt message.

In addition, according to the design of the solar module power generation abnormality detection method of No. TW-I630790, it is possible to immediately determine whether the coupling receiver passes the electricity according to the content of the prompt message output by the coupling receiver. The open circuit fault point of the force circuit can be quickly detected to find the open circuit fault point position of the solar module string.

However, the aforementioned solar module power generation abnormality detection method of No. TW-I630790 is only applicable to generally determine whether the coupled receiver has passed the open fault point of the power circuit, and detect and find the open fault point of the solar module string Location, but it cannot provide a simplified solar panel power generation characteristic curve abnormality test method and system to provide it suitable for preliminary abnormal test operations.

Another conventional solar panel power generation abnormality detection method and system, such as the invention patent of the Republic of China Patent Publication No. TW-I499887 "Solar Power Generation System and Its Abnormality Detection Method", which discloses a solar power generation system and its abnormality detection method. The solar power generation system includes a maximum power tracking controller and an array of solar power generation units. The abnormality detection method of the solar power generation system includes: a standard duty cycle value establishment phase and a power supply phase.

In addition, in the aforementioned method for detecting abnormality of the solar power generation system of No. TW-I499887, during the establishment of the standard duty cycle value, the solar power generation unit is first checked to ensure that the solar power generation unit is normally generating electricity. Then, the maximum power tracking controller is used to output a control signal to the solar power generation unit, so that the solar power generation system outputs a maximum power, and a standard duty cycle range of the solar power generation unit is calculated.

Continuing with the above, the abnormal detection method of the solar power generation system of No. TW-I499887 mentioned above is also in the power supply phase, irregularly judging whether the responsibility period value of the solar power unit is within the corresponding standard responsibility period range, In order to determine whether the solar power generation unit has abnormal power generation.

However, the aforementioned abnormality detection method for the solar power generation system of No. TW-I499887 is only applicable to generally determine whether the solar power generation unit’s duty cycle value is within its corresponding standard during the power supply phase. Within the scope of the quasi-responsibility period, it is unable to provide a simplified solar panel power generation characteristic curve abnormality test method and system to provide a preliminary abnormal test operation.

Another conventional solar panel power generation abnormality detection method and system, for example: US Patent Publication No. US-20160019323 "Solar Power Generation System, Abnormality Determination Processing Device, Abnormality Determination Processing Method, and Program" patent application, which discloses A solar panel power generation abnormality detection system. A solar power generation system includes a solar power generation module (solar power generation module), a power measurement unit (power measurement unit), an inverter (inverter), a solar illuminance meter (abnormality determination unit), and a power generation abnormality detection unit. Power measurement unit [power measurement unit].

However, the aforementioned solar panel power generation abnormality detection system of US-20160019323 must use the solar illuminance meter and the generation abnormality detection unit, and the generation abnormality detection unit is connected to the power measurement unit in order to read the power Power data of the measurement unit. Therefore, the solar panel power generation anomaly detection system and method have the disadvantage of complicated system structure and its detection operation.

Another conventional solar panel power generation abnormality detection method and system, for example: US Patent Publication No. US-20130300449 "Solar Power Generation System, Abnormality Detection Method, and Abnormality Detection System" patent application, which discloses another solar panel Power generation anomaly detection system. The solar panel power generation abnormality detection system is connected to a solar battery [solar battery], and the solar battery includes a current detection unit [current detection unit] and a voltage detection unit [voltage detection unit]. The solar panel power generation abnormality detection system includes a characteristic calculation unit (characteristic calculation unit), an abnormality detection unit (abnormality detection unit) and an Environmental measurement unit [environment measurement unit].

However, the aforementioned solar panel power generation anomaly detection system of US-20130300449 must use the current detection unit, voltage detection unit, characteristic calculation unit, anomaly detection unit, and environmental measurement unit, and the current detection unit And the voltage detection unit is connected to the solar cell so as to read the current and voltage data of the solar cell. Therefore, the solar panel power generation anomaly detection system and method have the disadvantage of complicated system structure and its detection operation.

Another conventional solar panel power generation abnormality detection method and system, such as the invention patent of the Republic of China Patent Publication No. TW-I595744 "Solar panel power generation abnormality test method and system", which discloses a solar panel power generation abnormality test method.

Continuing, the method of No. TW-I595744 mentioned above includes: using a power converter to directly control a solar cell module to operate at a number of predetermined voltage points, and using the predetermined voltage point measurements to obtain a number of measurements Current; use the plurality of predetermined voltage points and the plurality of measured currents to calculate a plurality of first power data; and use the plurality of first power data to compare with a first power generation characteristic curve; or, use the power converter Directly control the solar cell module to operate at a number of predetermined current points, and use the predetermined current points to measure to obtain a number of measured voltages; use the predetermined current points and the number of measured voltages to calculate the number of Two power data; and comparing the plurality of second power data with a second power generation characteristic curve to test whether the solar cell module generates abnormally.

However, the aforementioned solar panel power generation abnormality test method No. TW-I595744 requires to calculate a large number of the first power data or the second power data, but it still provides a simplified solar panel power generation Characteristic or its curve abnormality test method and system requirements are provided for preliminary abnormality test operations.

Obviously, the conventional solar panel power generation anomaly detection method and its system There must be a need to further simplify the structure and method of its power generation anomaly detection system. The aforementioned patent application is only a reference for the technical background of the present invention and an explanation of the current state of technology development, and is not intended to limit the scope of the present invention.

In view of this, in order to meet the above technical problems and needs, the present invention provides a light-weight or data-simplified solar panel power generation abnormality test method and system, which utilizes a power converter (or inverter) in a solar panel. Measure at least one first reference point voltage and at least one first reference point current between a first near maximum power point and a near short circuit current point of the battery module, and use the first reference point voltage and the first reference point Calculate the power of at least one first reference point by current, and compare the power at the first reference point with an abnormal characteristic of a first power generation curve; or, use the electric energy converter in a solar cell module with a second near-maximum power Measure at least one second reference point voltage and at least one second reference point current between a point and a near-open circuit voltage point, and use the second reference point voltage and the second reference point current to calculate at least one second reference point power, The power of the second reference point is compared with the abnormal characteristics of a second power generation curve to test whether the solar cell module generates abnormal power. Therefore, compared with the conventional solar panel power generation abnormality detection system and method, the power generation can be greatly reduced. Abnormal test transmission communication data amount (only a few measuring points are used), further simplify the power generation abnormality test operation procedure and reduce the power generation abnormality test cost.

The main purpose of the preferred embodiment of the present invention is to provide a light-weight or data-simplified solar panel power generation abnormality test method and system, which utilizes a power converter (or inverter) in one of the solar cell modules Measure at least one first reference point voltage and at least one first reference point current between the first near maximum power point and a near short-circuit current point, and use the first reference point voltage and the first reference point current to calculate at least one second A reference point power, and using the first reference point power and a first power generation curve abnormal characteristic The comparison is carried out to achieve the purpose of greatly reducing the amount of communication data transmitted for abnormal power generation tests (only a few measurement points are used), simplifying the operating procedures of abnormal power generation tests and reducing the cost of abnormal power generation tests.

Another object of the preferred embodiment of the present invention is to provide a light-weight or data-simplified solar panel power generation abnormality test method and system, which utilizes a power converter (or inverter) in a solar cell module Measure at least one second reference point voltage and at least one second reference point current between a second near maximum power point and a near open circuit voltage point, and use the second reference point voltage and the second reference point current to calculate at least one The second reference point power, and the second reference point power is compared with the abnormal characteristics of a second power generation curve to test whether the solar cell module generates abnormal power, so as to achieve a significant reduction in the amount of communication data transmitted during the abnormal power generation test (only The purpose of adopting a small number of measuring points], simplifying the operation procedure of abnormal power generation test and reducing the cost of abnormal power generation test.

In order to achieve the above objective, the data-lightweight or data-simplified solar panel power generation abnormality test method of the preferred embodiment of the present invention includes: using a power converter (or inverter) to control a solar cell module, and combining the solar The battery module is operated in a first power generation curve section; the solar battery module is controlled by the electric energy converter (or inverter) to operate at a first near maximum power point and a near short-circuit current point, respectively; At least one first reference point is selected between a near maximum power point and a near short-circuit current point, and at least one first reference point voltage and at least one first reference point current are measured at the first reference point; using the first reference The point voltage and the first reference point current are used to calculate at least one first reference point power; and the first reference point power is used to compare with an abnormal characteristic of a first power generation curve to see if it is abnormal.

The first near maximum power point in the preferred embodiment of the present invention includes a first maximum power point.

The first near maximum power point or the first maximum power point in the preferred embodiment of the present invention is used to calculate a fill factor characteristic (the ratio of the maximum output power to the product of the short circuit current and the open circuit voltage).

The near short-circuit current point in the preferred embodiment of the present invention includes a short-circuit current point.

The currents between the near short-circuit current point or short-circuit current point and the first near maximum power point or the first maximum power point in the preferred embodiment of the present invention are used to calculate a current ratio characteristic.

In the preferred embodiment of the present invention, the first reference point is located between a first maximum power point and a short-circuit current point.

In the preferred embodiment of the present invention, a test unit selection configuration is connected to the power converter, or the test unit selection configuration is connected to a near-end device or a remote device, and the near-end device or the remote device is connected to communicate with The power converter.

The near-end device or the remote device in the preferred embodiment of the present invention is used to perform an advanced test operation for abnormal power generation.

In order to achieve the above objective, the data-lightweight or data-simplified solar panel power generation abnormality test method of the preferred embodiment of the present invention includes: using a power converter (or inverter) to control a solar cell module, and combining the solar The battery module is operated in a second power generation curve section; the solar battery module is controlled by the electric energy converter (or inverter) to operate at a second near maximum power point and a near open circuit voltage point, respectively; At least one second reference point is selected between two near maximum power points and near open circuit voltage points, and at least one second reference point voltage and at least one second reference point current are measured at the second reference point; The second reference point voltage and the second reference point current are used to calculate at least one second reference point power; and the second reference point power is used to compare with an abnormal characteristic of a second power generation curve for abnormality.

The second near maximum power point in the preferred embodiment of the present invention includes a second maximum power point.

The second near maximum power point or the second maximum power point in the preferred embodiment of the present invention is used to calculate a fill factor characteristic (the ratio of the maximum output power to the product of the short-circuit current and the open-circuit voltage).

The near-open-circuit voltage point in the preferred embodiment of the present invention includes an open-circuit voltage point.

The near-open-circuit voltage point or open-circuit voltage and the voltage at the second near-maximum power point or the second maximum power point in the preferred embodiment of the present invention are used to calculate a voltage ratio characteristic.

The second reference point in the preferred embodiment of the present invention is located between a second maximum power point and an open circuit voltage point.

In the preferred embodiment of the present invention, a test unit selection configuration is connected to the power converter, or the test unit selection configuration is connected to a near-end device or a remote device, and the near-end device or the remote device is connected to communicate with The power converter.

The near-end device or the remote device in the preferred embodiment of the present invention is used to perform an advanced test operation for abnormal power generation.

In order to achieve the above object, the data lightweight or data-simplified solar panel power generation abnormality test system of the preferred embodiment of the present invention includes: at least one solar cell module, which includes several sub-modules; and at least one power converter connected to it In the solar cell module; and a test unit, which is selectively configured to be connected to the power converter, or the test unit is selectively configured to be connected to a near-end device or a remote Device, and the near-end device or the remote device is connected to the electric energy converter; wherein the electric energy converter is controlled and operated by the test unit in a first power generation curve interval, and the solar cell modules are operated in a first A near-maximum power point and a near-short-circuit current point, and at least one first reference point is selected between the first near-maximum power point and the near-short-circuit current point, and at least one first reference is measured at the first reference point Point voltage and at least one first reference point current, and use the first reference point voltage and first reference point current to calculate at least one first reference point power, and use the first reference point power and a first power generation curve abnormal characteristic Compare whether it is abnormal; or wherein in a second power generation curve interval, the power converter is controlled by the test unit to operate the solar cell module at a second near maximum power point and a near open circuit voltage point, respectively, At least one second reference point is selected between the second near maximum power point and near open circuit voltage point, and at least one second reference point voltage and at least one second reference point current are measured at the second reference point, and The second reference point voltage and the second reference point current are used to calculate at least one second reference point power, and the second reference point power is used to compare with an abnormal characteristic of a second power generation curve for abnormality.

The first near maximum power point in the preferred embodiment of the present invention includes a first maximum power point.

The first near maximum power point or the first maximum power point in the preferred embodiment of the present invention is used to calculate a fill factor characteristic (the ratio of the maximum output power to the product of the short circuit current and the open circuit voltage).

The near short-circuit current point in the preferred embodiment of the present invention includes a short-circuit current point.

The currents between the near short-circuit current point or short-circuit current point and the first near maximum power point or the first maximum power point in the preferred embodiment of the present invention are used to calculate a current ratio characteristic.

In the preferred embodiment of the present invention, the first reference point is located between a first maximum power point and a short-circuit current point.

The second near maximum power point in the preferred embodiment of the present invention includes a second maximum power point.

The second near maximum power point or the second maximum power point in the preferred embodiment of the present invention is used to calculate a fill factor characteristic (the ratio of the maximum output power to the product of the short-circuit current and the open-circuit voltage).

The near-open-circuit voltage point in the preferred embodiment of the present invention includes an open-circuit voltage point.

The near-open-circuit voltage point or open-circuit voltage and the voltage at the second near-maximum power point or the second maximum power point in the preferred embodiment of the present invention are used to calculate a voltage ratio characteristic.

The second reference point in the preferred embodiment of the present invention is located between a second maximum power point and an open circuit voltage point.

The near-end device or the remote device in the preferred embodiment of the present invention is used to perform an advanced test operation for abnormal power generation.

1‧‧‧Solar battery module

10‧‧‧Submodule

11‧‧‧Solar battery unit

12‧‧‧Bypass diode

2‧‧‧Electric energy converter

2a‧‧‧Test unit

20‧‧‧Inverter

21‧‧‧DC-DC step-up power converter

22‧‧‧Transmission Module

3‧‧‧Test System

30‧‧‧Operation Panel

4‧‧‧Cloud Server

40‧‧‧Remote Test System

Figure 1: A schematic diagram of the structure of a solar cell module in a preferred embodiment of the present invention.

Figure 2: A schematic diagram of the structure of the light-weight solar panel power generation abnormality test system according to the first preferred embodiment of the present invention.

Figure 3: A schematic diagram of the curves of various abnormal power generation states using solar cell modules in a preferred embodiment of the present invention.

Figure 4: A schematic flow diagram of a method for testing abnormal power generation of a lightweight solar panel according to a preferred embodiment of the present invention.

Fig. 4A: A schematic diagram of the light-weight solar panel power generation abnormality test method of the preferred embodiment of the present invention selecting the first reference point to perform the test operation in the first power generation curve section.

Figure 5: A schematic flow diagram of a method for testing abnormal power generation of a lightweight solar panel according to another preferred embodiment of the present invention.

Fig. 5A: A schematic diagram of a light-weight solar panel power generation abnormality test method according to another preferred embodiment of the present invention selecting a second reference point in the second power generation curve section to perform the test operation.

Fig. 6: A schematic diagram of the structure of the light-weight solar panel power generation abnormality test system according to the second preferred embodiment of the present invention.

Fig. 7: A schematic diagram of the structure of the light-weight solar panel power generation abnormality test system according to the third preferred embodiment of the present invention.

In order to fully understand the present invention, preferred embodiments are exemplified below and described in detail with the accompanying drawings, and they are not intended to limit the present invention.

The light-weight data or data-simplified solar panel power generation abnormality (abnormal power generation characteristics) test method and system of the preferred embodiment of the present invention are applicable to various types of solar cell modules, including substrate solar cells or thin-film solar cells, And it is also applicable to various solar cell module materials, including monocrystalline silicon (monocrystalline silicon) solar cells, polycrystalline silicon (polycrystalline silicon) solar cells or amorphous silicon (amorphous silicon) solar cells, but it is not intended to limit the present invention The scope.

For example, the data-light or data-simplified solar panel power generation abnormality test method and system of the preferred embodiment of the present invention adopts "light-weight", "data-light-weight", "simplified" or "data-simplified" The technical term "type" is defined as the purpose of lightening, reducing or simplifying the transmission communication volume of abnormal solar panel power generation test data, but it is not used to limit the scope of the present invention.

For example, the data-lightweight or data-simplified solar panel power generation abnormality test method and system of the preferred embodiment of the present invention adopts the technical term "power generation curve abnormal characteristics", which is defined as including curve steps (steps) or depressions. notch] characteristics, low current characteristics, low voltage characteristics, rounder knee characteristics Characteristics, shallower slope in vertical leg characteristics, steeper slope in horizontal leg characteristics, or other abnormal power generation characteristics, but they are not intended to limit the scope of the present invention.

For example, the data-lightweight or data-simplified solar panel power generation abnormality test method and system of the preferred embodiment of the present invention adopts the technical term "power generation characteristics", which is defined as including fill factor characteristics (maximum output power and short-circuit current) The ratio of the product to the open circuit voltage], current ratio characteristics, voltage ratio characteristics, or other various solar panel power generation characteristics or any combination thereof for a series of comparisons, but they are not intended to limit the scope of the present invention.

FIG. 1 shows a schematic diagram of the structure of a solar cell module used in a preferred embodiment of the present invention. Please refer to Figure 1, a solar cell module 1 includes a number of sub-modules [serial connection body] 10 and a number of bypass [bypass] diodes 12, and each sub-module 10 includes a number of solar energy Solar cell 11, and the solar battery cells 11 are connected in series. The sub-modules 10 of the plurality of solar cell modules 1 are connected to one or more of the bypass diodes 12 in parallel.

Please refer to Figure 1 again. For example, when the ambient temperature is fixed and there is no shade, and when the solar cell module 1 can generate electricity normally, the solar cell module 1 can produce different solar illuminances according to different solar illuminances. The output voltage-current curve [VI curve], so its output can produce different voltage-power curves [VP curve]. Similarly, under the condition of fixed solar illuminance and no shade, and when the solar cell module 1 can generate power normally, the solar cell module 1 can also generate different output voltage-current curves according to different ambient temperatures. Also output can generate different voltage-power curves.

Please refer to Figure 1 again, the solar cell module 1 is electrically connected to a power converter (for example: a full-bridge power converter) 2, and a test unit 2a [or test system] is selectively connected to The electrical energy turns Inverter 2, as shown in the bottom left of Figure 1, and the power converter 2 is an inverter [PV inverter] or a micro-inverter to convert and output the electrical energy generated by the solar cell module 1 . For example, when the electrical energy converter 2 is operating, the maximum power tracking (MPPT) operation is usually performed appropriately according to the change of solar illuminance. In this way, the output voltage or output current of the solar cell module 1 is selectively controlled under different solar illuminances to achieve control at its maximum power operating point.

Please refer to Figure 1 again, another preferred embodiment of the present invention selects and configures the test unit 2a (or test system) to be connected to a near-end device (or back-end test system), and the near-end device is connected to communication于此electric power converter2. Or, in another preferred embodiment of the present invention, the test unit 2a (or test system) is selectively configured to be connected to a remote device (or remote test system), and the remote device is connected to the power converter 2 for communication.

FIG. 2 shows a schematic diagram of the structure of the light-weight solar panel power generation abnormality test system according to the first preferred embodiment of the present invention. Please refer to Figures 1 and 2, the light-weight solar panel power generation abnormality test system according to the first preferred embodiment of the present invention includes a test system 3 electrically connected to several inverters 20 (such as the electrical energy in Figure 1 The converter 2] is used to control and test the power generation of the solar cell modules 1 through the inverters 20. At this time, the inverter 20 or the electric energy converter 2 stops performing the maximum power tracking operation in advance for a predetermined time. The solar battery module 1 is a single solar battery module, a string of solar battery modules or several strings of solar battery modules, and the power converter 2 is an inverter connected to a series of modules, and a micro inverter Or equipment with functions similar to inverters.

Please refer to FIG. 2 again, a plurality of the solar cell modules 1 are connected to a mains power system via a plurality of the inverters 20, as shown on the right side of the second diagram. When a plurality of the solar cell modules 1 are controlled and tested through the plurality of the inverters 20, the test power generation of the plurality of the solar cell modules 1 is still recycled and output to the utility power system to increase its power generation utilization rate. The present invention also The test system 3 of the light-weight solar panel power generation abnormality test system of a preferred embodiment is selected and integrated on the inverter 20, that is, the inverter 20 has a power generation abnormality test function and other functions (for example, : Maximum power tracking function] to provide multiple operation functions.

Please refer to FIG. 2 again, the test system 3 of the light-weight solar panel power generation abnormality test system of another preferred embodiment of the present invention is selectively installed in the inverter 20, and the test system 3 is separated. It is installed in a test device (for example, a near-end device), and the test device includes an operation panel 30 for field personnel to operate and set the test system 3. The test system 3 of the light-weight solar panel power generation abnormality test system of another preferred embodiment of the present invention is connected to a single or several inverters 20, and the test system 3 can be operated and set by the operation panel 30.

Fig. 3 shows a schematic diagram of various power generation abnormalities occurring in a solar cell module according to a preferred embodiment of the present invention. Please refer to Figure 3, the various abnormal power generation states of the solar cell module include: A, curved steps or depressions (shown by the curved dotted line in the middle of Figure 3); B, low current (dashed arrow on the upper left of Figure 3) Shown]; C, low voltage (shown by the dashed arrow at the bottom right of Figure 3); D, bent knees (shown by the dashed line on the upper right of Figure 3); E, shallow slope of the vertical zone [right of Figure 3 Shown by the dashed line]; F, the deep slope of the horizontal zone [shown by the upper dashed line in Figure 3].

FIG. 4 shows a schematic flow diagram of a method for testing abnormal power generation of a lightweight solar panel according to a preferred embodiment of the present invention. Please refer to Figure 4, the light-weight solar panel power generation abnormality test method of the preferred embodiment of the present invention selects a power generation characteristic curve, which includes a voltage-power [VP] curve or a voltage-current [VI] curve , And the voltage-power [VP] curve or the voltage-current [VI] curve has a maximum power point [MPP, maximum power point].

Figure 4A shows that the light-weight solar panel power generation abnormality test method of the preferred embodiment of the present invention is selected in the first power generation curve interval, and the first is selected. A schematic diagram of the test operation performed at the reference point, which corresponds to the light-weight solar panel power generation abnormality test method in Figure 4. Please refer to Figure 4A, the light-weight solar panel power generation abnormality test method of the preferred embodiment of the present invention is selected to be executed in a first power generation curve section, and the first power generation curve section has a short-circuit current point Isc, such as As shown on the left side of Figure 4A.

Please refer to Figures 1, 2, 3, 4, and 4A. The light-weight solar panel power generation abnormality test method of the preferred embodiment of the present invention includes step S1: For example, first, use the power converter 2 or reverse The inverter 20 controls the solar cell module 1 and operates the solar cell module 1 in the first power generation curve section, as shown on the left side of FIG. 4A.

Please refer to Figures 1, 2, 3, 4, and 4A again. The light-weight solar panel power generation abnormality test method of the preferred embodiment of the present invention includes step S2: For example, then, using the power converter 2 or The inverter 20 controls the solar cell module 1 to operate at a first near maximum power point and a near short-circuit current point, respectively.

Please refer to Figures 1, 2, 3, 4 and 4A again. The light-weight solar panel power generation abnormality test method of the preferred embodiment of the present invention includes step S3: For example, then, appropriate technical means are used (for example: Automatic or manual mode] Select at least one first reference point between the first near maximum power point (or maximum power point) and near short-circuit current point (or short-circuit current point), and measure at least at the first reference point A first reference point voltage V(a) and at least one first reference point current I(a) are shown in the left and middle positions of Fig. 4A.

Please refer to Figures 1, 2, 3, 4, and 4A again. The method for testing abnormal light-weight solar panel power generation according to a preferred embodiment of the present invention includes step S4: For example, then, appropriate technical means are used for the test The unit 2a or the test system 3 uses the first reference point voltage V(a) and the first reference point current I(a) to calculate at least one first reference point power P(a), as shown in the left and middle positions of Fig. 4A Show.

Please refer to Figures 1, 2, 3, 4 and 4A again, the present invention The light-weight solar panel power generation abnormality test method of the preferred embodiment includes step S5: For example, then, the test unit 2a or the test system 3 (or back-end test system, cloud test system or other test) is performed by appropriate technical means. The system] uses the first reference point power P(a) and a first power generation curve abnormal characteristic (as shown in Figure 3) to compare whether it is abnormal, so as to reduce the amount of abnormal power generation test data processing and greatly reduce the abnormal power generation test The number of communication data to be transmitted.

Please refer to Figures 1, 2, 4, and 4A again. For example, the light-weight solar panel power generation abnormality test method of the preferred embodiment of the present invention may alternatively execute the first test method in the test unit 2a or the test system 3 The near maximum power point or the first maximum power point is used to calculate a fill factor characteristic (the ratio of the maximum output power to the product of the short-circuit current and the open-circuit voltage); or, the short-circuit current point or the short-circuit current point and the first near-maximum power The current at the first point or the first maximum power point is used to calculate a current ratio characteristic, so that the near end or the far end can be compared with a standard value to determine whether the solar cell module 1 is generating abnormally.

Please refer to Figures 1, 2, 3, 4, and 4A again. The test method for abnormal light-weight solar panel power generation according to the preferred embodiment of the present invention is based on the test unit 2a or the test system 3 at the proximal end to make preliminary judgments After judging the abnormal power generation (as shown in Figure 3), it is combined to execute a remote solar panel power generation abnormality advanced test method and its system (as shown in Figure 7) or similar power generation abnormality test methods and methods. The system, for example: multi-point detection and scanning of the solar panel power generation characteristic curve, to determine whether the solar cell module 1 is abnormal in power generation.

FIG. 5 shows a schematic flow diagram of a method for testing abnormal power generation of a lightweight solar panel according to another preferred embodiment of the present invention. Fig. 5A shows a schematic diagram of a light-weight solar panel power generation abnormality test method according to another preferred embodiment of the present invention. The second reference point is selected in the second power generation curve section to perform the test operation, which corresponds to the simplified solar panel in Fig. 5 Abnormal power generation test method. Please refer to FIG. 5A, the light-weight solar panel power generation abnormality test method of another preferred embodiment of the present invention is selected to be executed in a second power generation curve section, and the second power generation curve section has an open circuit voltage point Voc. As shown on the right side of Figure 5A.

Please refer to Figures 1, 2, 3, 5, and 5A. Another preferred embodiment of the present invention is a method for testing abnormal power generation of a lightweight solar panel including step S1A: For example, first, use the power converter 2 Or the inverter 20 controls the solar cell module 1 and operates the solar cell module 1 in the second power generation curve section, as shown on the right side of FIG. 5A.

Please refer to Figures 1, 2, 3, 5, and 5A. Another preferred embodiment of the present invention is to test the abnormal power generation of a lightweight solar panel. The method includes step S2A: For example, then, the power converter is used 2 or the inverter 20 controls the solar cell module 1 to operate at a second near maximum power point and a near open circuit voltage point, respectively.

Please refer to Figures 1, 2, 3, 5 and 5A again. Another preferred embodiment of the present invention is a method for testing abnormality of light-weight solar panel power generation including step S3A: For example, then, by appropriate technical means [ For example: automatic or manual mode) select at least one second reference point between the second near maximum power point (or maximum power point) and near open circuit voltage point (or open circuit voltage point), and measure at the second reference point Measure at least one second reference point voltage V(b) and at least one second reference point current I(b), as shown on the right side of Figure 5A.

Please refer to Figures 1, 2, 3, 5, and 5A again. Another preferred embodiment of the present invention is a method for testing abnormality of light-weight solar panel power generation including step S4A: For example, then, using appropriate technical means The test unit 2a or the test system 3 uses the second reference point voltage V(b) and the second reference point current I(b) to calculate at least one second reference point power P(b), as shown on the right side of Figure 5A .

Please refer to Figures 1, 2, 3, 5, and 5A again. Another preferred embodiment of the present invention is a method for testing abnormality of light-weight solar panel power generation. Step S5A: For example, then, the test unit 2a or the test system 3 (or back-end test system, cloud test system, or other test system) is used by appropriate technical means to use the second reference point power P(b) and a The abnormal characteristics of the second power generation curve (as shown in Figure 3) are compared for abnormality, so as to reduce the amount of abnormal power generation test data processing and greatly reduce the amount of communication data transmitted during abnormal power generation test.

Please refer to Figures 1, 2, 5, and 5A again. For example, the light-weight solar panel power generation abnormality test method of another preferred embodiment of the present invention is used in the test unit 2a or the test system 3 [or back-end Test system, cloud test system, or other test system] Optionally execute the second near maximum power point or the second maximum power point to calculate a fill factor characteristic (the ratio of the maximum output power to the product of the short-circuit current and the open-circuit voltage); Or, the current between the near open circuit voltage point or the open circuit voltage point and the second near maximum power point or the second maximum power point is used to calculate a voltage ratio characteristic, so that the near end or the far end can be compared with a standard value to It is determined whether the solar cell module 1 has abnormal power generation.

Please refer to Figures 4A and 5A again, the light-weight solar panel power generation abnormality test method of another preferred embodiment of the present invention is selected to be executed in the first power generation curve interval (as shown in Figure 4A) and the second power generation The curve interval (as shown in Fig. 5A), or simultaneously or simultaneously can be selected and executed in the first power generation curve interval and the second power generation curve interval.

FIG. 6 shows a schematic diagram of the structure of the light-weight solar panel power generation abnormality test system according to the second preferred embodiment of the present invention. Please refer to Figure 6, the test system 3 of the second preferred embodiment of the present invention (for example: a near-end test system or a remote test system or other test system) is electrically connected to the inverter 20, and the A DC-DC boost type electric energy converter 21 is arranged between the solar cell module 1 and the inverter 20.

FIG. 7 shows a schematic diagram of the structure of the light-weight solar panel power generation abnormality test system according to the third preferred embodiment of the present invention. Please refer to Figure 7 As shown, the test system 3 of the third preferred embodiment of the present invention is further connected to a cloud server 4 or a remote monitoring system, so that the cloud server 4 or remote monitoring system can automatically determine whether the solar cell module 1 is Abnormal power generation. The cloud server 4 or remote monitoring system includes a remote testing system 40, and the inverter 20 is also connected to a transmission module 22 or a wireless transmission module, so that the remote testing system 40 can be wired or wirelessly The inverter 20 is connected and operated to perform a number of abnormal power generation test operations or advanced generation abnormality (entire power generation curve characteristics) test operations of the solar cell module 1.

Please refer to Figure 7 again, the test system 3 of another preferred embodiment of the present invention can be optionally combined with the transmission module 22 to form a near-end test unit or a near-end test system, which can be directly performed Initial [simplified] test operation for abnormal power generation, and the near-end test unit or near-end test system is additionally connected to the cloud server 4 or remote monitoring system, so that the cloud server 4, the remote test system 40 or the remote The monitoring system automatically judges whether the solar cell module 1 performs the advanced test operation of abnormal power generation.

The foregoing preferred embodiments only illustrate the present invention and its technical features. The technology of this embodiment can still be implemented with various substantially equivalent modifications and/or alternatives; therefore, the scope of rights of the present invention shall be subject to a patent application. The scope defined by the scope shall prevail. The copyright in this case is restricted to the use of patent applications in the Republic of China.

1‧‧‧Solar battery module

20‧‧‧Inverter

3‧‧‧Test System

30‧‧‧Operation Panel

Claims (28)

A light-weight solar panel power generation abnormality test method, which includes: using a power converter to control a solar cell module, and operating the solar cell module in a first power generation curve section; using the power converter to control the solar cell The battery module is operated at a first near maximum power point and a near short-circuit current point respectively; at least one first reference point is selected between the first near maximum power point and the near short-circuit current point, and the first reference point Measure at least one first reference point voltage and at least one first reference point current; use the first reference point voltage and the first reference point current to calculate at least one first reference point power; and use the first reference point power and The abnormal characteristic of the first power generation curve is compared to see if it is abnormal. According to the light-weight solar panel power generation abnormality test method described in item 1 of the scope of patent application, the first near maximum power point includes a first maximum power point. According to the light-weight solar panel power generation abnormality test method described in item 2 of the scope of patent application, the first near maximum power point or the first maximum power point is used to calculate a fill factor characteristic. According to the light-weight solar panel power generation abnormality test method described in item 1 of the scope of patent application, the near-short-circuit current point includes a short-circuit current point. According to the light-weight solar panel power generation abnormality test method described in item 1 of the scope of patent application, the current between the near short-circuit current point or a short-circuit current point and the first near maximum power point or the first maximum power point is used for calculation A current ratio characteristic. According to the light-weight solar panel power generation abnormality test method described in item 1 of the scope of patent application, the first reference point is located between a first maximum power point and a short-circuit current point. According to the light-weight solar panel power generation abnormality test method described in item 1 of the scope of patent application, a test unit is selectively configured and connected to the power conversion Converter, or select and configure the test unit to be connected to a near-end device or a remote device, and the near-end device or remote device is connected to communicate with the power converter. According to the light-weight solar panel power generation abnormality test method described in item 7 of the scope of patent application, the near-end device or the remote device is used to perform an advanced power generation abnormality test operation. A light-weight solar panel power generation abnormality test method, which includes: using an electrical energy converter to control a solar cell module, and operating the solar cell module in a second power generation curve section; using the electrical energy converter to control the solar energy The battery module is operated at a second near maximum power point and a near open circuit voltage point; at least one second reference point is selected between the second near maximum power point and near open circuit voltage point, and the second reference point Measure at least one second reference point voltage and at least one second reference point current; use the second reference point voltage and the second reference point current to calculate at least one second reference point power; and use the second reference point power and 1. The abnormal characteristics of the second power generation curve are compared to see if they are abnormal. According to the light-weight solar panel power generation abnormality test method described in item 9 of the scope of patent application, the second near maximum power point includes a second maximum power point. According to the light-weight solar panel power generation abnormality test method described in item 10 of the scope of patent application, the second near maximum power point or the second maximum power point is used to calculate a fill factor characteristic. According to the light-weight solar panel power generation abnormality test method described in item 9 of the scope of patent application, the near-open-circuit voltage point includes an open-circuit voltage point. According to the light-weight solar panel power generation abnormality test method described in item 9 of the scope of patent application, the voltage of the near open circuit voltage point or an open circuit voltage and the second near maximum power point or the voltage of the second maximum power point are used to calculate a Voltage ratio characteristics. According to the light-weight solar panel power generation abnormality test method described in item 9 of the scope of patent application, the second reference point is located between a second maximum power point and an open circuit voltage point. According to the light-weight solar panel power generation abnormality test method described in item 9 of the scope of patent application, a test unit is selectively configured to be connected to the power converter, or the test unit is selectively configured to be connected to a near-end device or a remote device. End device, and the near-end device or the remote device is connected to the power converter for communication. According to the light-weight solar panel power generation abnormality test method described in item 15 of the scope of patent application, the near-end device or the remote device is used to perform an advanced power generation abnormality test operation. A light-weight solar panel power generation abnormality test system, which includes: at least one solar cell module, which includes several sub-modules; at least one electric energy converter, which is connected to the solar cell module; and a test unit, which can be selected The configuration is connected to the power converter, or the test unit is selectively configured to be connected to a near-end device or a remote device, and the near-end device or the remote device is connected to the power converter; wherein a first power generation In the curve section, the power converter is controlled by the test unit to operate the solar cell module at a first near maximum power point and a near short-circuit current point, respectively, and at the first near maximum power point and near short-circuit current point. At least one first reference point is selected among points, and at least one first reference point voltage and at least one first reference point current are measured at the first reference point, and the first reference point voltage and the first reference point current are used Calculate the power of at least one first reference point, and compare the power of the first reference point with an abnormal characteristic of a first power generation curve to see if it is abnormal; or wherein the power conversion is controlled by the test unit in a second power generation curve section The solar cell module is operated at a second near maximum power point and a near open circuit voltage point respectively, and at least a second reference point is selected between the second near maximum power point and near open circuit voltage point, and Measure at least one second reference point voltage and at least one second reference point at the second reference point The second reference point voltage and the second reference point current are used to calculate at least one second reference point power, and the second reference point power is used to compare whether the second-stage power generation abnormality characteristic is abnormal. According to the light-weight solar panel power generation abnormality test system described in item 17 of the scope of patent application, the first near maximum power point includes a first maximum power point. According to the light-weight solar panel power generation abnormality test system described in item 18 of the scope of patent application, the first near maximum power point or the first maximum power point is used to calculate a fill factor characteristic. According to the light-weight solar panel power generation abnormality test system described in item 17 of the scope of patent application, the near-short-circuit current point includes a short-circuit current point. According to the light-weight solar panel power generation abnormality test system described in item 17 of the scope of patent application, the current between the near short-circuit current point or a short-circuit current point and the first near maximum power point or the first maximum power point is used for calculation A current ratio characteristic. According to the light-weight solar panel power generation abnormality test system described in item 17 of the scope of patent application, the first reference point is located between a first maximum power point and a short-circuit current point. According to the light-weight solar panel power generation abnormality test system described in item 17 of the scope of patent application, the second near maximum power point includes a second maximum power point. According to the light-weight solar panel power generation abnormality test system described in item 23 of the scope of patent application, the second near maximum power point or the second maximum power point is used to calculate a fill factor characteristic. According to the light-weight solar panel power generation abnormality test system described in item 17 of the scope of patent application, the near-open-circuit voltage point includes an open-circuit voltage point. According to the light-weight solar panel power generation abnormality test system described in item 17 of the patent application, the voltage between the near open circuit voltage point or an open circuit voltage and the second near maximum power point or the second maximum power point is used to calculate a Voltage ratio characteristics. According to the light-weight solar panel power generation abnormality test system described in item 17 of the scope of patent application, the second reference point is located between a second maximum power point and an open circuit voltage point. According to the light-weight solar panel power generation abnormality test system described in item 17 of the scope of patent application, the near-end device or the remote device is used to perform an advanced power generation abnormality test operation.

Images