TWI730634B - Simplified power generation abnormality detection method and system for photovoltaic panels - Google Patents

Abstract

A simplified power generation abnormality detection method includes: operating a power converter to controllably operate a solar cell module at a plurality of predetermined voltage points; measuring a plurality of currents according to the a plurality of predetermined voltage points to thereby obtain a plurality of measured currents; comparing the plurality of predetermined voltage points and the plurality of measured currents with a first power generation abnormality detection model, without a need of calculating a plurality of power data of the plurality of predetermined voltage points and the plurality of measured currents; or, operating the power converter to controllably operate the solar cell module at a plurality of predetermined current points; measuring a plurality of voltages according to the plurality of predetermined current points to thereby obtain a plurality of measured voltages; comparing the plurality of predetermined current points and the plurality of measured voltages with a second power generation abnormality detection model, without a need of calculating a plurality of power data of the plurality of predetermined current points and the plurality of measured voltages.

Description

Simplified solar panel power generation abnormal test method and system

The present invention relates to a simplified (simplified) solar panel power generation abnormality test method and system thereof to simplify the power generation abnormality test operation procedure and improve the power generation abnormality test efficiency; in particular, it relates to a method suitable for near-end or remote end [Remote] Simplified solar panel power generation abnormality test method and system for control operation; more particularly, it relates to a simplified solar panel power generation that can be performed by a power converter (power converter) or an inverter (inverter) Abnormal test method and system.

The conventional solar panel power generation abnormality detection method and its system or related technologies, 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 The method and its operating system mainly include a first solar panel power generation abnormality test method and a second solar panel power generation abnormality test method.

Figure 1 shows the flow diagram of the conventional solar panel power generation abnormality test method of the Republic of China Patent Publication No. TW-I595744. Please refer to Figure 1. The aforementioned first solar panel power generation abnormality test method of No. TW-I595744 includes: using a power converter to directly control a solar cell module to operate at a number of predetermined voltage points, and using the number A number of predetermined voltage points are measured to obtain a number of measured currents; the number of predetermined voltage points and the number of measured currents are used to calculate a number of first power data; and the number of first power data is used The rate data is compared with a first power generation characteristic curve to test whether the solar cell module generates abnormally.

Figure 2 shows a schematic flow diagram of another conventional solar panel power generation abnormality test method of ROC Patent Publication No. TW-I595744, which corresponds to the solar panel power generation abnormality test method in Figure 1. Please refer to Figure 2, the second solar panel power generation abnormality test method of No. TW-I595744 mentioned above includes: using the power converter to directly control the solar cell module to operate at a number of predetermined current points, and using the number A plurality of predetermined current points are measured to obtain a plurality of measured voltages; the plurality of predetermined current points and the plurality of measured voltages are used to calculate a plurality of second power data; and the plurality of second power data and a second power generation characteristic curve are used Perform comparison to test whether the solar cell module generates power abnormally.

However, the first and second solar panel power generation abnormality test methods mentioned above in No. TW-I595744 both need to calculate the first power and the second power, and need to calculate a larger number of the first power data Or several of the second power data, as shown in Figures 1 and 2, but there is still a need to provide a simplified solar panel power generation characteristic or curve abnormality test method and system, so as to provide suitable for preliminary or advanced abnormalities. Test assignments.

Another conventional solar panel power generation abnormality detection method and its system or related technologies, such as the invention patent of Chinese Patent Publication No. CN-1808164 "Power regulator with built-in curve tracer and its curve evaluation method for tracer" The application discloses a power regulator with a built-in curve tracer.

Figure 3 shows a block diagram of the conventional solar power generation system of Chinese Patent Publication No. CN-1808164 combined with a power regulator with a built-in curve tracer. Fig. 4 shows a block diagram of the conventional curve tracer in Chinese Patent Publication No. CN-1808164, which corresponds to the curve tracer in Fig. 3.

Please refer to Figures 3 and 4, the aforementioned CN-1808164 No. The power conditioner has a curve drawing device, and the curve drawing device measures the DC voltage (VX) and a corresponding DC current (IX) of a solar cell or a fuel cell’s external DC power supply, and based on the DC The curve of current (IX) and DC voltage (VX) or the measured DC current (IX) and DC voltage (VX) are calculated DC power (PX) in order to plot DC power (PX)-DC voltage (VX) )curve.

However, the curve drawing device of the aforementioned No. CN-1808164 must detect the direct current voltage (VX) of the solar cell or fuel cell and its corresponding direct current (IX) separately, and according to the direct current voltage (VX) and its phase The corresponding direct current (IX) is used to calculate the direct current power (PX), so it has the disadvantages of complicated detection procedures and increased amount of calculated power data.

Another conventional solar panel power generation anomaly detection method and its system or related technologies, 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 solar power generation System and method for detecting abnormality of solar module power generation. The detection method includes the steps: A. An inverter of a solar module string is electrically connected, and an audio signal is input to an electric power of the solar module string Loop; 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, the coupled receiver is used to output a corresponding audio signal according to the sensing result of the audio signal Prompt message, and the human body can perceive the prompt message.

In addition, according to the design of the aforementioned solar module power generation abnormality detection method of No. TW-I630790, it can be immediately determined whether the coupling receiver has passed the open circuit fault of the power circuit according to the content of the prompt message output by the coupling receiver It can quickly detect and find out the location of the open circuit fault point 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 passes the open fault point of the power circuit, and detects and finds the solar module. The position of the open circuit fault point of the string, but it cannot provide a simplified solar panel power generation characteristic curve abnormality test method and system, which is suitable for preliminary or advanced abnormal test operations.

Another conventional solar panel power generation anomaly detection method and its system or related technologies, such as the invention patent of the Republic of China Patent Publication No. TW-I499887 "Solar Power Generation System and Its Anomaly 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 abnormal detection method of the solar power generation system includes: a standard duty cycle value establishment phase and a power supply phase.

Continuing with the above, the abnormal detection method of the solar power generation system in the aforementioned No. TW-I499887 is in the establishment stage of the standard liability period value, firstly, the solar power generation unit is checked to ensure whether 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 method for detecting abnormality of the solar power generation system in No. TW-I499887 is only applicable to the grid that has been integrated into the power grid. It is generally judged during the power supply stage whether the solar power generation unit’s duty cycle value is within its corresponding standard responsibility. Within the period range, but it cannot provide a simplified solar panel power generation characteristic curve abnormality test method and system, which is suitable for preliminary or advanced abnormal test operations.

Another conventional solar panel that has been integrated into the power grid is abnormally generating electricity Detection method and its system or related technology, 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 anomaly 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 detection operation.

In fact, the aforementioned solar panel power generation abnormality detection system of US-20160019323 is only applicable to the operation of the solar illuminance meter, power generation abnormality detection unit and power measurement unit that have been integrated into the power grid, but it cannot provide simplified solar energy. The abnormal test method and system of the power generation characteristic curve of the board are provided for preliminary or advanced abnormal test operations.

Another conventional solar panel power generation abnormality detection method and its system or related technologies that have been integrated into the power grid, such as: 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 abnormality 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 environment 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 detection operation.

In fact, the aforementioned anomaly detection method of the solar power generation system of US-20130300449 is only applicable to the operation of the current detection unit, voltage detection unit, characteristic calculation unit, anomaly detection unit, and environmental measurement that have been integrated into the power grid. Unit, but it cannot provide a simplified solar panel power generation characteristic curve abnormality test method and system, which is suitable for preliminary or advanced abnormal test operations.

Obviously, the conventional solar panel power generation anomaly detection method and its system must further simplify the structure and method of its power generation anomaly detection system, reduce data processing steps, reduce the amount of data transmission, or reduce the amount of data processing (for example: avoiding calculations) demand. The aforementioned patents and patent applications are only a reference for the technical background of the present invention and illustrate the current state of technology development, and they are 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 simplified solar panel power generation abnormality test method and system, which utilizes a power converter or an inverter to directly control a solar cell module to operate in Several predetermined voltage points; use the several predetermined voltage points to measure current to obtain several measurement currents; use the several predetermined voltage points and several measured currents and a first power generation characteristic abnormality test model to perform Compare to test whether the solar cell module generates abnormal power without calculating the powers of the predetermined voltage points and the measured currents; or, directly control the solar energy by using the power converter or inverter The battery module is operated at a number of predetermined current points; the predetermined current points are used to measure voltage to obtain a number of measured voltages; the predetermined current points and the number of measured voltages are used to generate a second power generation The characteristic abnormality test model is compared to test whether the solar cell module is generating abnormally, and there is no need to calculate the several powers of the several predetermined current points and several measured voltages, so it is compared with the conventional solar panel power generation abnormality detection The system and the method can indeed simplify the power generation abnormality test operation procedure and reduce the power generation abnormality test cost, and it can improve the power generation abnormality test efficiency.

The main purpose of the preferred embodiment of the present invention is to provide a simplified solar panel power generation abnormality test method and system, which utilizes a power converter or an inverter to directly control a solar cell module to operate at a plurality of predetermined voltage points ; Use the plurality of predetermined voltage points to measure current to obtain a plurality of measured currents; use the plurality of predetermined voltage points and a plurality of measured currents to compare with a first power generation characteristic abnormality test model to test the Whether the solar cell module is generating abnormally, and there is no need to calculate the power of the several predetermined voltage points and the several measured currents, so as to simplify the power generation abnormality test procedure, improve the power generation abnormality test efficiency and reduce the power generation abnormality test cost Purpose and efficacy.

Another object of the preferred embodiment of the present invention is to provide a simplified solar panel power generation abnormality test method and system, which utilizes a power converter or an inverter to directly control the solar cell module to operate at a plurality of predetermined currents Point; use the predetermined current points to measure the voltage to obtain a number of measured voltages; use the predetermined current points and the number of measured voltages to compare with a second power generation characteristic abnormality test model, and not It is necessary to calculate the several powers of the several predetermined current points and several measured voltages to test the Whether the solar cell module is generating abnormality, in order to achieve the purpose and effect of simplifying the power generation abnormality test operation procedure, improving the power generation abnormality test efficiency and reducing the power generation abnormality test cost.

In order to achieve the above objective, the simplified solar panel power generation abnormality test method of the preferred embodiment of the present invention includes: using a power converter or an inverter to directly control a solar cell module to operate at a plurality of predetermined voltage points; Measuring current at a plurality of predetermined voltage points to obtain a plurality of measurement currents; and comparing the predetermined voltage points and the plurality of measured currents with a first power generation characteristic abnormality test model to test the solar cell Whether the power generation of the module is abnormal, and there is no need to calculate the power of the predetermined voltage points and the measured currents.

The first power generation characteristic abnormality test model of the preferred embodiment of the present invention includes a voltage variation parameter and a current variation parameter.

The first power generation characteristic abnormality test model of the preferred embodiment of the present invention includes several abnormal power generation states.

The plurality of abnormal power generation states of the first power generation characteristic abnormality test model of the preferred embodiment of the present invention include a power generation step state, a power generation low current state, a power generation low voltage state, a power generation knee-bent state, and a power generation vertical region shallow. The slope state, the deep slope state of a power generation horizontal zone, or any combination thereof.

In a preferred embodiment of the present invention, the first power generation characteristic abnormality test model is selected from a single solar panel power generation characteristic abnormality test model or a total solar panel power generation characteristic abnormality test model.

The inverter in the preferred embodiment of the present invention is selected from a micro inverter.

In order to achieve the above objective, the simplified solar panel power generation abnormality test method in a preferred embodiment of the present invention includes: Utilize the electric energy converter or inverter to directly control the solar cell module to operate at a plurality of predetermined current points; use the predetermined current points to measure voltage to obtain a plurality of measured voltages; and use the plurality of predetermined current points The predetermined current point and several measured voltages are compared with a second power generation characteristic abnormality test model to test whether the solar cell module is generating abnormally, and there is no need to calculate the predetermined current points and several measured voltages. Several powers.

The second power generation characteristic abnormality test model of the preferred embodiment of the present invention includes a voltage variation parameter and a current variation parameter.

The second power generation characteristic abnormality test model of the preferred embodiment of the present invention includes several abnormal power generation states.

The plurality of abnormal power generation states of the second power generation characteristic abnormality test model of the preferred embodiment of the present invention include a power generation step state, a power generation low current state, a power generation low voltage state, a power generation bent knee state, and a power generation vertical region shallow. The slope state, the deep slope state of a power generation horizontal zone, or any combination thereof.

The second power generation characteristic abnormality test model of the preferred embodiment of the present invention is selected from a single solar panel power generation characteristic abnormality test model or a total solar panel power generation characteristic abnormality test model.

The inverter in the preferred embodiment of the present invention is selected from a micro inverter.

In order to achieve the above objective, the 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; at least one power converter or an inverter, which is connected to The solar cell module; and a test unit, which is optionally configured to be connected to the power converter or inverter, or the test unit is to be directly connected to the power converter or Inverter, or select and configure the test unit to connect to a near-end device or a remote device, and the near-end device or remote device is connected to the power converter or inverter; where in the voltage control mode The solar cell module is directly controlled by operating the power converter or inverter through the test system, and it is operated at a number of predetermined voltage points, and the predetermined voltage points are used to measure the current to obtain a number of quantities Measure the current, and compare the predetermined voltage points and the number of measured currents with a first power generation characteristic abnormality test model to test whether the solar cell module generates abnormally, and there is no need to calculate the predetermined voltages Several power points and several measuring currents.

The first power generation characteristic abnormality test model of the preferred embodiment of the present invention includes a voltage variation parameter and a current variation parameter.

The first power generation characteristic abnormality test model of the preferred embodiment of the present invention includes several abnormal power generation states.

The plurality of abnormal power generation states of the first power generation characteristic abnormality test model of the preferred embodiment of the present invention include a power generation step state, a power generation low current state, a power generation low voltage state, a power generation knee-bent state, and a power generation vertical region shallow. The slope state, the deep slope state of a power generation horizontal zone, or any combination thereof.

In a preferred embodiment of the present invention, the first power generation characteristic abnormality test model is selected from a single solar panel power generation characteristic abnormality test model or a total solar panel power generation characteristic abnormality test model.

The inverter in the preferred embodiment of the present invention is selected from a micro inverter.

In order to achieve the above objective, the 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; at least one power converter or an inverter, which is connected to The solar cell module; and A test unit, which is optionally configured to be connected to the power converter or inverter, or the test unit is selected to be directly connected to the power converter or inverter, or the test unit is optionally configured to be connected to a near-end device or a A remote device, and the near-end device or remote device is connected to communicate with the power converter or inverter; wherein the solar cell is directly controlled by operating the power converter or inverter through the test system in the current control mode Module, and it operates at a number of predetermined current points, and uses the predetermined current points to measure voltage to obtain a number of measurement voltages, and uses the predetermined current points and the number of measurement voltages to be combined with a The second power generation characteristic abnormality test model is compared to test whether the solar cell module generates abnormality, and there is no need to calculate the powers of the predetermined current points and the measurement voltages.

The second power generation characteristic abnormality test model of the preferred embodiment of the present invention includes a voltage variation parameter and a current variation parameter.

The second power generation characteristic abnormality test model of the preferred embodiment of the present invention includes several abnormal power generation states.

The plurality of abnormal power generation states of the second power generation characteristic abnormality test model of the preferred embodiment of the present invention include a power generation step state, a power generation low current state, a power generation low voltage state, a power generation bent knee state, and a power generation vertical region shallow. The slope state, the deep slope state of a power generation horizontal zone, or any combination thereof.

The second power generation characteristic abnormality test model of the preferred embodiment of the present invention is selected from a single solar panel power generation characteristic abnormality test model or a total solar panel power generation characteristic abnormality test model.

The inverter in the preferred embodiment of the present invention is selected from a micro inverter.

1: Solar cell module

10: Submodule

11: Solar cell 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 model for abnormal power generation characteristics

4: Test system

40: Operation panel

5: Cloud server

50: remote test system

Figure 1: The traditional patent of the Republic of China Patent Announcement No. TW-I595744 Schematic diagram of the test method for abnormal solar panel power generation.

Figure 2: The flow diagram of another conventional solar panel power generation abnormality test method of the Republic of China Patent Publication No. TW-I595744.

Figure 3: The block diagram of the conventional solar power generation system of Chinese Patent Publication No. CN-1808164 combined with a power regulator with a built-in curve tracer.

Figure 4: The block diagram of the conventional curve tracer of Chinese Patent Publication No. CN-1808164.

Figure 5: A schematic diagram of a simplified solar panel power generation abnormality test system according to a preferred embodiment of the present invention using solar cell modules.

Fig. 6: A schematic diagram of the structure of the simplified solar panel power generation abnormality test system according to the first preferred embodiment of the present invention.

Fig. 7: A schematic diagram of various abnormal power generation states of a simplified solar panel power generation abnormality test system using a power generation characteristic abnormality test model in a preferred embodiment of the present invention.

Figure 8: A schematic flow diagram of a simplified solar panel power generation abnormality test method according to a preferred embodiment of the present invention.

Figure 9: A schematic flow diagram of a simplified solar panel power generation abnormality test method according to another preferred embodiment of the present invention.

Figure 10: A schematic flow diagram of a simplified solar panel power generation abnormality test method according to another preferred embodiment of the present invention.

Figure 11: A schematic diagram of the structure of the simplified solar panel power generation abnormality test system according to the second preferred embodiment of the present invention.

Figure 12: A schematic diagram of the structure of the simplified 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 simplified solar panel power generation in the preferred embodiment of the present invention The test method and its system 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 solar cells or amorphous silicon solar cells, but they are not intended to limit the scope of the present invention.

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

FIG. 5 shows a schematic diagram of the structure of the simplified solar panel power generation abnormality test system adopting the solar cell module according to the preferred embodiment of the present invention. Please refer to Figure 5, 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 5 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 the solar cell module 1 can normally generate electricity At this time, the solar cell module 1 can also generate different output voltage-current curves according to different ambient temperatures, so that its output can also generate different voltage-power curves.

Please refer to Fig. 5 again, the solar cell module 1 is electrically connected to a power converter (for example: full-bridge power converter) 2, and a test unit 2a [or test system] is selectively connected to The power converter 2 is shown at the bottom left of Figure 5, and the power converter 2 is an inverter [PV inverter] or a micro-inverter, so that the electrical energy generated by the solar cell module 1 can be processed Convert output. For example, when the electric energy converter 2 is operating, the maximum power tracking (MPPT) operation is usually performed appropriately according to the change of the 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 5 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 other test system), a mobile communication device [mobile communication device] ], a portable device (portable device) or other device with similar functions, and the near-end device, mobile communication device or portable device is connected to the power converter 2 or inverter for communication.

FIG. 6 shows a schematic diagram of the structure of the simplified solar panel power generation abnormality test system according to the first preferred embodiment of the present invention. Please refer to Figures 5 and 6, the simplified solar panel power generation abnormality test system of the first preferred embodiment of the present invention further includes a power generation characteristic abnormality test model 3 [right side of Figure 6] and a test system 4 [section Figure 6 upper side].

Please refer to Figs. 5 and 6. For example, the test system 4 is electrically connected to several inverters 20 (such as the power converter 2 in Fig. 5) so as to pass through the several inverters 20. Perform a control test for the power generation of several solar cell modules 1. 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 power The 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, a micro-inverter, or the like of a series of modules Equipment with inverter function.

Please refer to FIGS. 5 and 6 again. Several of the solar cell modules 1 are connected to a mains power system via several inverters 20, as shown on the right side of FIG. 6. When a plurality of the solar cell modules 1 are controlled and tested through the plurality of the inverters 20, the tested 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 test system 4 of the simplified solar panel power generation abnormality test system according to another preferred embodiment of the present invention is selected and integrated on the inverter 20, that is, the inverter 20 has a power generation abnormality test function and other functions [Example: Maximum power tracking function] to provide multiple operation functions.

Please refer to Figures 5 and 6, the test system 4 of the simplified solar panel power generation abnormality test system of another preferred embodiment of the present invention is selected to be separately arranged on the inverter 20, and the test system 4 is a single one. It is separately arranged in a test device (for example, a near-end device), and the test device includes an operation panel 40 for field personnel to operate and set the test system 4. The test system 4 of the simplified 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 4 can be operated and set by the operation panel 40.

FIG. 7 shows a schematic diagram of various abnormal power generation states of a simplified solar panel power generation abnormality test system using a power generation characteristic abnormality test model in a preferred embodiment of the present invention. Please refer to Figure 7, the simplified solar panel power generation abnormality test system of the preferred embodiment of the present invention adopts the power generation characteristic abnormality test model. Various abnormal power generation states include: A, power generation steps or depressions (the curved dotted line in the middle of Figure 7) Shown]; B, low power generation current (shown by the dotted arrow on the upper left of Figure 7); C, low power generation voltage (shown by the dashed arrow on the bottom right of Figure 7); D, power generation bending knee [shown in Figure 7 Shown by the dotted line on the upper right]; E. The shallow slope of the vertical power generation zone (shown by the dotted line on the right in Figure 7) Show]; F, the deep slope of the power generation level (shown by the dotted line at the top of Figure 7) or other abnormal state models.

FIG. 8 shows a schematic flow diagram of a simplified solar panel power generation abnormality test method according to a preferred embodiment of the present invention. Please refer to Figures 5, 6, 7 and 8, the simplified solar panel power generation abnormality test method of the preferred embodiment of the present invention includes step S1A: For example, first, you can choose to use automatic [automatically] or semi-automatic [semi] The power converter 2 or the inverter 20 is used to directly control the solar cell module 1 and operate at a number of predetermined voltage points in an automatic or manual mode, so that the solar cell module 1 can generate electricity.

Please refer to Figures 5, 6, 7 and 8, the simplified solar panel power generation abnormality test method of the preferred embodiment of the present invention includes step S2A: For example, then, use appropriate technical means (e.g., automatic, semi-automatic Or manual mode] Use the predetermined voltage points to measure the current, so as to correspondingly obtain several measurement currents.

Please refer to Figures 5, 6, 7 and 8, the simplified solar panel power generation abnormality test method of the preferred embodiment of the present invention includes step S3A: For example, then, use appropriate technical means (e.g., automatic, semi-automatic Or manual mode] Use the predetermined voltage points and the number of measured currents to compare with a first power generation characteristic abnormality test model to test whether the solar cell module 1 is generating abnormally, and there is no need to calculate the predetermined number. Voltage points and several powers of several measuring currents.

Figure 9 shows a schematic flow diagram of a simplified solar panel power generation abnormality test method according to another preferred embodiment of the present invention, which corresponds to the simplified solar panel power generation abnormality test method in Figure 8. Please refer to Figures 5, 6, 7 and 9, the simplified solar panel power generation abnormality test method of another preferred embodiment of the present invention includes step S1B: For example, first, use appropriate technical means (e.g., automatic, Semi-automatic or manual mode] Use the power converter 2 or the inverter 20 to directly control the solar cell module 1 for operation At several predetermined current points, the solar cell module 1 can generate electricity.

Please refer to Figures 5, 6, 7 and 9, the simplified solar panel power generation abnormality test method of another preferred embodiment of the present invention includes step S2B: For example, then, appropriate technical means (e.g., automatic, Semi-automatic or manual mode] Use the predetermined current points to measure the voltage, so as to obtain the corresponding measurement voltages.

Please refer to Figures 5, 6, 7 and 9, the simplified solar panel power generation abnormality test method of another preferred embodiment of the present invention includes step S3B: For example, then, use appropriate technical means (e.g., automatic , Semi-automatic or manual mode] Use the predetermined current points and several measured voltages to compare with a second power generation characteristic abnormality test model to test whether the solar cell module 1 generates abnormal power, and there is no need to calculate the number. Several predetermined current points and several powers of several measured voltages.

FIG. 10 shows a schematic flowchart of a simplified solar panel power generation abnormality test method according to another preferred embodiment of the present invention, which corresponds to the simplified solar panel power generation abnormality test method in FIGS. 8 and 9. Please refer to Figures 5, 6, 7 and 10 again, the simplified solar panel power generation abnormality test method of another preferred embodiment of the present invention includes step S1C: For example, first, use appropriate technical means (e.g., automatic , Semi-automatic or manual mode] The solar cell module 1 is directly controlled by the power converter 2 or the inverter 20 to operate at a number of predetermined voltage points, and the power converter 2 or the inverter 20 is also used for direct control The solar cell module 1 is operated at a number of predetermined current points so that the solar cell module 1 can generate electricity.

Please refer to Figures 5, 6, 7 and 10 again. For example, compared with the above-mentioned preferred embodiment, another preferred embodiment of the present invention can choose to directly control the solar cell module 1 and operate on the data. A predetermined current point; and then directly control the solar cell module 1 and operate in a combination test method of several predetermined voltage points.

Please refer to Figures 5, 6, 7 and 10 again, the present invention is also A preferred embodiment of the simplified solar panel power generation abnormality test method includes step S2C: for example, then, using appropriate technical means (for example: automatic, semi-automatic or manual) to measure the current using the predetermined voltage points, To obtain a plurality of measurement currents, and then use the plurality of predetermined current points to measure the voltage to obtain a plurality of measurement voltages, and the order of the two operations can be reversed before and after the operation is performed.

Please refer to Figures 5, 6, 7 and 10 again. For example, compared with the above-mentioned preferred embodiment, another preferred embodiment of the present invention can choose to directly control the solar cell module 1 and operate on the data. A combination test method of several predetermined current points and measurement to obtain several measurement voltages; and then directly control the solar cell module 1 to operate at several predetermined voltage points and measurement to obtain several measurement currents.

Please refer to Figures 5, 6, 7 and 10 again, the simplified solar panel power generation abnormality test method of another preferred embodiment of the present invention includes step S3C: For example, then, use appropriate technical means (e.g., automatic , Semi-automatic or manual mode] The combination of the predetermined voltage points and the measurement currents and the combination of the predetermined current points and the measurement voltages are compared with a third power generation characteristic abnormality test model, respectively. To test whether the solar cell module is generating abnormally, and it is not necessary to calculate the predetermined voltage points and the measurement currents or the powers of the predetermined current points and the measurement voltages.

FIG. 11 shows a schematic diagram of the structure of the simplified solar panel power generation abnormality test system according to the second preferred embodiment of the present invention. Please refer to FIG. 11, the test system 4 (for example: a near-end test system or other test systems) of the second preferred embodiment of the present invention is electrically connected to the inverter 20, and the solar cell module 1 A DC-DC boost type electric energy converter 21 is arranged between the inverter 20 and the inverter 20.

FIG. 12 shows a schematic diagram of the structure of the simplified solar panel power generation abnormality test system according to the third preferred embodiment of the present invention. Please refer to Figure 12 As shown, the simplified solar panel power generation abnormality test system of the third preferred embodiment of the present invention uses a cloud server 5 or a remote monitoring system including a remote test system 50, and the inverter 20 is also connected to a transmission The module 22 or a wireless transmission module allows the remote test system 50 to connect and operate the inverter 20 in a wired or wireless manner to perform a number of abnormal power generation tests of the solar cell module 1.

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 cell module

10: Submodule

11: Solar cell unit

12: Bypass diode

2: Electric energy converter

2a: test unit

3: Test model for abnormal power generation characteristics

Claims (24)

A simplified solar panel power generation abnormality test method, which includes: using a power converter or an inverter to directly control a solar cell module to operate at a plurality of predetermined voltage points; using the plurality of predetermined voltage points to measure current , To obtain several measurement currents; and compare the predetermined voltage points and several measurement currents with a first power generation characteristic abnormality test model to test whether the solar cell module generates abnormal power, and there is no need Calculate the powers of the predetermined voltage points and the measured currents. According to the simplified solar panel power generation abnormality test method described in claim 1, wherein the first power generation characteristic abnormality test model includes a voltage variation parameter and a current variation parameter. According to the simplified solar panel power generation abnormality test method described in item 1 of the scope of patent application, the first power generation characteristic abnormality test model includes several abnormal power generation states. According to the simplified solar panel power generation abnormality test method described in item 3 of the scope of patent application, the plurality of abnormal power generation states of the first abnormal power generation characteristic test model include a power generation step state, a power generation low current state, and a power generation low voltage State, a power generation bent knee state, a power generation vertical zone shallow slope state, a power generation horizontal zone deep slope state, or any combination thereof. According to the simplified solar panel power generation abnormality test method described in claim 1, wherein the first power generation characteristic abnormality test model is selected from a single solar panel power generation characteristic abnormality test model or a total solar panel power generation characteristic abnormality test model. According to the simplified solar panel power generation abnormality test method described in item 1 of the scope of patent application, the inverter is selected from a micro-inverter. A simplified solar panel power generation abnormality test method, which includes: using the electric energy converter or inverter to directly control the solar cell module to operate at a plurality of predetermined current points; Use the plurality of predetermined current points to measure voltage to obtain a plurality of measurement voltages; and use the plurality of predetermined current points and the plurality of measured voltages to compare with a second power generation characteristic abnormality test model to test the Whether the solar cell module generates power abnormally, and there is no need to calculate the power of the predetermined current points and the measured voltages. According to the simplified solar panel power generation abnormality test method described in item 7 of the scope of patent application, the second power generation characteristic abnormality test model includes a voltage variation parameter and a current variation parameter. According to the simplified solar panel power generation abnormality test method described in item 7 of the scope of patent application, the second power generation characteristic abnormality test model includes several abnormal power generation states. According to the simplified solar panel power generation abnormality test method described in item 9 of the scope of patent application, the plurality of abnormal power generation states of the second power generation characteristic abnormal test model include a power generation step state, a power generation low current state, and a power generation low voltage State, a power generation bent knee state, a power generation vertical zone shallow slope state, a power generation horizontal zone deep slope state, or any combination thereof. According to the simplified solar panel power generation abnormality test method described in item 7 of the scope of patent application, the second power generation characteristic abnormality test model is selected from a single solar panel power generation characteristic abnormality test model or a total solar panel power generation characteristic abnormality test model. According to the simplified solar panel power generation abnormality test method described in item 7 of the scope of patent application, the inverter is selected from a micro-inverter. A simplified solar panel power generation abnormality test system, comprising: at least one solar cell module, which includes several sub-modules; at least one electric energy converter or an inverter, which is connected to the solar cell module; and a test Unit, the selected configuration is connected to the power converter or inverter, or the test unit is selected to be directly connected to the power converter or inverter, 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 or the inverter; wherein the solar cell module is directly controlled by operating the power converter or the inverter through the test system in the voltage control mode , And it operates at several predetermined voltage points, and uses the several predetermined voltage points to measure current to obtain several measurement currents, and uses the several predetermined voltage points and several measurement currents and a first The power generation characteristic abnormality test model is compared to test whether the solar cell module is generating abnormality, and there is no need to calculate the powers of the predetermined voltage points and the measurement currents. According to the simplified solar panel power generation abnormality test system described in item 13 of the scope of patent application, the first power generation characteristic abnormality test model includes a voltage variation parameter and a current variation parameter. According to the simplified solar panel power generation abnormality test system described in item 13 of the scope of patent application, the first power generation characteristic abnormality test model includes several abnormal power generation states. According to the simplified solar panel power generation abnormality test system described in item 15 of the scope of patent application, the plurality of abnormal power generation states of the first abnormal power generation characteristic test model include a power generation step state, a power generation low current state, and a power generation low voltage state State, a power generation bent knee state, a power generation vertical zone shallow slope state, a power generation horizontal zone deep slope state, or any combination thereof. According to the simplified solar panel power generation abnormality test system described in item 13 of the scope of patent application, the first power generation characteristic abnormality test model is selected from a single solar panel power generation characteristic abnormality test model or a total solar panel power generation characteristic abnormality test model. According to the simplified solar panel power generation abnormality test system described in item 13 of the scope of patent application, the inverter is selected from a micro-inverter. A simplified solar panel power generation abnormality test system, comprising: at least one solar cell module, which includes several sub-modules; at least one electric energy converter or an inverter, which is connected to the solar cell module; and A test unit, which is optionally configured to be connected to the power converter or inverter, or the test unit is selected to be directly connected to the power converter or inverter, or the test unit is optionally configured to be connected to a near-end device or a A remote device, and the near-end device or remote device is connected to communicate with the power converter or inverter; wherein the solar cell is directly controlled by operating the power converter or inverter through the test system in the current control mode Module, and it operates at a number of predetermined current points, and uses the predetermined current points to measure voltage to obtain a number of measurement voltages, and uses the predetermined current points and the number of measurement voltages to be combined with a The second power generation characteristic abnormality test model is compared to test whether the solar cell module generates abnormality, and there is no need to calculate the powers of the predetermined current points and the measurement voltages. According to the simplified solar panel power generation abnormality test system described in item 19 of the scope of patent application, the second power generation characteristic abnormality test model includes a voltage variation parameter and a current variation parameter. According to the simplified solar panel power generation abnormality test system described in item 19 of the scope of patent application, the second power generation characteristic abnormality test model includes several abnormal power generation states. According to the simplified solar panel power generation abnormality test system described in item 21 of the scope of patent application, wherein the plurality of abnormal power generation states of the second power generation characteristic abnormal test model include a power generation step state, a power generation low current state, and a power generation low voltage State, a state of bending knees, a state of shallow slope in the vertical area of power generation, a state of deep slope in a horizontal area of power generation, or any combination thereof. According to the simplified solar panel power generation abnormality test system described in item 19 of the scope of patent application, the second power generation characteristic abnormality test model is selected from a single solar panel power generation characteristic abnormality test model or a total solar panel power generation characteristic abnormality test model. According to the simplified solar panel power generation abnormality test system described in item 19 of the scope of patent application, the inverter is selected from a micro-inverter.

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