KR101731206B1 - Server for monitoring electric energy - Google Patents

Server for monitoring electric energy Download PDF

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Publication number
KR101731206B1
KR101731206B1 KR1020160015904A KR20160015904A KR101731206B1 KR 101731206 B1 KR101731206 B1 KR 101731206B1 KR 1020160015904 A KR1020160015904 A KR 1020160015904A KR 20160015904 A KR20160015904 A KR 20160015904A KR 101731206 B1 KR101731206 B1 KR 101731206B1
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South Korea
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power
amount
loads
power amount
consumed
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KR1020160015904A
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Korean (ko)
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유영규
노희태
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엘에스산전 주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/133—Arrangements for measuring electric power or power factor by using digital technique
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/006—Measuring power factor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/06—Arrangements for measuring electric power or power factor by measuring current and voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/133—Arrangements for measuring electric power or power factor by using digital technique
    • G01R21/1331—Measuring real or reactive component, measuring apparent energy
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/40—Testing power supplies
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The present invention relates to a power amount monitoring server and, more specifically, relates to a power amount monitoring server to reduce costs for constructing a system by receiving the power amount from a distribution board, an external power source, or a renewable energy generation device. According to an embodiment of the present invention, the power amount monitoring server comprises: a reception unit which receives a first power amount as a power amount consumed by one or more loads from a distribution board, receives a second power amount supplied from an external power source to a power system, and a third power amount supplied from the renewable energy generation device to the power system from an external power meter; and a monitoring unit which calculates a first estimation supply power amount using the first power amount and the second power amount, determining at least one of the first estimation supply power amount and the third power amount as a supply power amount of the renewable energy generation device.

Description

[0001] The present invention relates to a server for monitoring electric energy,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power monitoring server, and more particularly, to a power monitoring server for reducing system construction cost by receiving power from a distribution board, an external power source, or a renewable energy generation device.

A power monitoring server is a server capable of remote meter reading, bi-directional communication between a power supplier and a consumer, and time-based metering. The power monitoring server provides energy usage information more frequently than the existing remote meter reading that is done once a month by reading the meter every 15 minutes.

However, only the information provided by the power monitoring server has a limitation in saving energy. That is, in the conventional power monitoring server, only the total power consumption of the home can be known, and the power consumption amount of each electronic apparatus in the home can not be known. Therefore, it is often the case that a user can not know which electronic device should be used for saving power consumption. In addition, it may be economically inefficient to attach a watt-hour meter for each electronic device to know the power consumption of each electronic device.

1 is a view showing a state in which a conventional power monitoring server 10 receives an amount of power from a distribution board 30; Referring to FIG. 1, a conventional power monitoring server 10 may monitor the total power supplied to each load 40. [ At this time, the load 40 to be supplied with power may be a home appliance used in the home.

However, as described above, the conventional power monitoring server 10 can know only the total power consumption of the home, and can not know the power consumption amount of each electronic appliance in the home.

In addition, the conventional power monitoring server 10 can not measure the amount of power supplied from the outside, and there is a problem that an additional device for measuring the amount of power is needed. In addition, the conventional power monitoring server 10 has an additional apparatus for measuring the amount of power supplied from the outside, thereby increasing the system construction cost.

An object of the present invention is to provide a power monitoring server for reducing system construction cost by receiving power from a distribution board, an external power meter or a renewable energy meter.

It is another object of the present invention to provide a power monitoring server for reducing the system construction cost by determining the amount of power supplied to the external power source or the renewable energy generation device by the monitoring unit.

Further, the present invention calculates the amount of power supplied to the power system from the external power source by subtracting the amount of power supplied to the power system from the renewable energy generation device at the total amount of power consumed by the load, A monitoring server is provided.

Further, the present invention calculates the amount of power supplied to the power system from the renewable energy generation device by subtracting the amount of power supplied from the external power source to the power system at the total amount of power consumed by the load, A monitoring server is provided.

It is also an object of the present invention to provide a power monitoring server for receiving a total amount of power consumed by one or more loads and calculating each amount of power consumed by one or more loads to thereby provide each amount of power consumed by the load.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention which are not mentioned can be understood by the following description and more clearly understood by the embodiments of the present invention. It will also be readily apparent that the objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

According to an aspect of the present invention, there is provided a power monitoring server for monitoring a power amount of a power system including one or more loads supplied with power through an external power source and a renewable energy generator, A second power amount supplied from the external power source to the power system and a third power amount supplied from the regenerative power generator to the power system, Calculating a first estimated supply power amount by using the first power amount and the second power amount, and calculating at least one of the first estimated supply power amount and the third power amount based on a supply power amount of the renewable energy generation device And a monitoring unit And that is characterized.

According to another aspect of the present invention, there is provided a power monitoring server for monitoring a power amount of a power system including one or more loads supplied with power through an external power source and a renewable energy generation device, A second power amount supplied from the external power source to the power system, and a third power amount supplied from the regenerative power generator to the power system, the first power amount being the amount of power consumed by the at least one load, Calculating a second estimated supply power amount by using the first power amount and the third power amount, and calculating at least one of the second estimated supply power amount and the second power amount as a supply power amount of the external power source And a monitoring unit And that is characterized.

According to the present invention as described above, the receiving unit receives the amount of power from the distribution panel, the external power meter, or the renewable energy meter, thereby reducing the system construction cost.

Further, the present invention has the effect of reducing the system construction cost by determining the amount of power supplied to the external power source or the renewable energy generation device by the monitoring unit.

Further, the present invention can calculate the amount of power supplied to the power system from the external power source by subtracting the amount of power supplied from the renewable energy generation device to the power system at the total amount of power consumed by the load, It is effective.

Further, the present invention can calculate the amount of power supplied to the power system from the renewable energy generation device by subtracting the amount of power supplied from the external power source to the power system at the total amount of power consumed by the load, It is effective.

The present invention also has the effect of receiving the total amount of power consumed by one or more loads and calculating the amount of each power consumed by one or more loads, thereby providing each amount of power consumed by the load.

Brief Description of the Drawings Fig. 1 shows a conventional power monitoring server receiving power from a distribution board. Fig.
FIG. 2 illustrates a power monitoring server according to an embodiment of the present invention. FIG.
3 is a diagram illustrating a power monitoring server receiving an amount of power from an external power meter according to an exemplary embodiment of the present invention.
4 is a view showing a state where a power monitoring server receives power from a renewable energy meter according to an embodiment of the present invention;

The above and other objects, features, and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings, which are not intended to limit the scope of the present invention. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to denote the same or similar elements.

2 is a diagram illustrating a power monitoring server 100 according to an embodiment of the present invention. 2, the power monitoring server 100 according to an exemplary embodiment of the present invention may include a receiving unit 110, a monitoring unit 120, and an output unit 130. Referring to FIG. The power monitoring server 100 shown in FIG. 2 is according to one embodiment, and its components are not limited to the embodiment shown in FIG. 2, and some components may be added, changed or deleted have.

3 is a diagram illustrating a state in which the power monitoring server 100 receives power from the external power meter 400 according to an embodiment of the present invention. Hereinafter, a power monitoring server 100 according to an embodiment of the present invention will be described with reference to FIG. 2 and FIG.

The receiving unit 110 can receive the first amount of power that is the amount of power consumed by the one or more loads 600 from the distribution board 700. [ The receiving unit 110 may receive the second amount of power supplied from the external power source 300 to the power system and the third amount of power supplied to the power system from the regenerative power generator 200 from the external power meter 400 . On the other hand, the third power amount can be transmitted from the renewed energy meter to the external power meter.

In one embodiment, the load 600 may be an in-house installed electronic device and the external power source 300 may be a power station or substation that produces and supplies power to the power system. The power system refers to a collection of meters, electronic devices, etc. in the home. Also, the external power meter 400 may be a smart meter that measures the second amount of power supplied to the power system from the external power source 300.

Renewable energy, on the other hand, is pollution-free energy that can replace fossil fuels and nuclear power, including solar energy, wind power, hydro power, and bio energy. The renewable energy generation device 200 is a device capable of producing renewable energy and can be located inside or outside the power system.

The monitoring unit 120 may calculate the first estimated supply power amount using the first power amount and the second power amount. Then, at least one of the first estimated supply power amount and the third power amount may be determined as the supply power amount of the renewable energy generation device 200. [ The first estimated supply power amount may be the same as or different from the third power amount. According to an embodiment of the present invention, there is an advantage that an accurate supply power amount can be calculated by determining at least one of the first estimated supply power amount and the third power amount as the supply power amount of the renewable energy generation device (200).

In one embodiment, the monitoring unit 120 may calculate the first estimated supply power by subtracting the second power from the first power. The first power amount is the amount of power consumed in each load 600, the second amount of power is the amount of power supplied from the external power source 300, and the third amount of power is the amount of power supplied from the renewable energy generation device 200. Therefore, the sum of the second power amount and the third power amount is equal to the first power amount, and the first estimated supply power amount and the third power amount may be the same. The above-described process is summarized as Equation (1) below.

&Quot; (1) "

Figure 112016013805110-pat00001

Here, P A1 is the first estimated supply power amount, P 1 is the first power amount, P 2 is the second power amount, and P 3 is the third power amount.

Meanwhile, the monitoring unit 120 may calculate the second power amount by subtracting the third power amount from the first power amount. According to an embodiment of the present invention, when the second power amount is not received, the third power amount is subtracted from the first power amount to calculate the second power amount, thereby providing an amount of power even when the communication device fails.

In one embodiment, the first amount of power may be the total amount of power consumed by one or more loads 600 and may be the amount of power each of the one or more loads 600 consumes. In addition, the monitoring unit 120 may receive the total amount of power consumed by one or more loads 600 and calculate the amount of power each of the one or more loads 600 consumes. For example, the monitoring unit 120 may calculate a respective amount of power consumed by one or more loads 600 using a non-intrusive load monitoring (NILM) method. Non-interfering load monitoring is a technique that measures the overall voltage and current supply and predicts the power consumption and the electricity generation operation schedule for the individual load (600) in the home.

More specifically, the monitoring unit 120 analyzes a change in the electrical characteristics measured by the receiving unit 110, and identifies the home appliance as a power consumption subject based on the analysis result. Also, the monitoring unit 120 can estimate the power consumption of the identified home appliances. For this, the monitoring unit 120 may include a data collecting unit, a data processing unit, an event detecting unit, a feature extracting unit, a device identifying unit, and a power determining unit.

The data collecting unit captures the raw data received from the receiving unit 110. The data processing section aligns the current signal to the voltage signal with respect to the raw data captured by the data collecting section to secure an appropriate phase relationship. In addition, data is generalized for normalization and filtering is performed to extract harmonic characteristics (e.g., current harmonic power (CHP)). Specifically, the apparent power amount and the effective power amount of the first power amount are obtained, and the power factor (power factor) is calculated from the apparent power amount and the effective power amount.

The event detection unit detects an event occurring in the home appliance based on a change in the power factor provided from the data processing unit (switching on / off of the home appliance or switching of the operating state).

The feature extraction unit extracts the on / off timing of the home appliance and the power consumption pattern of the home appliance from the event detected by the event detection unit. For example, the washing machine differs greatly in the power consumption pattern when the rotating tub is rotated and when the rotating tub is not rotating. Also, since the rotation speed of the rotating tank in the washing and dehydrating steps is greatly different, the power consumption pattern at this time also differs greatly. However, since the television exhibits a substantially constant power consumption pattern without a large change in the power-on state, the power consumption pattern differs greatly from the above-mentioned washing machine. The feature extraction unit extracts a unique feature of the power consumption pattern of the home appliance from the event detection result of the event detection unit.

The device identification unit compares and analyzes the power consumption pattern extracted by the feature extraction unit with the reference data, and determines the type and operation state of the corresponding home appliance through the coincidence between the two data. Particularly, the device identification unit can identify what a plurality of home appliances are when a plurality of home appliances are simultaneously used by using the coefficient of the current harmonic power (CHP) secured by the data collection unit and the data processing unit.

The power determination unit can calculate the individual power amount of the corresponding home appliance by using the type and operation state of the home appliance identified in the apparatus identification unit.

The output unit 130 may output at least one of a first amount of power, a second amount of power, a third amount of power, and a respective amount of power consumed by one or more loads 600. [ According to one embodiment of the present invention, by outputting at least one of the first amount of power, the second amount of power, the third amount of power, and the amount of each of the amounts of power consumed by the one or more loads 600, have.

FIG. 4 is a diagram illustrating a state in which the power monitoring server 100 according to an embodiment of the present invention receives power from the renewable energy meter. Hereinafter, a power monitoring server 100 according to an embodiment of the present invention will be described with reference to FIG. 2 and FIG.

The receiving unit 110 can receive the first amount of power that is the amount of power consumed by the one or more loads 600 from the distribution board 700. [ The receiving unit 110 may receive a second amount of power supplied to the power system from the external power source 300 and a third amount of power supplied to the power system from the renewable energy generating device 200 from the renewable energy meter 500 . On the other hand, the second power amount can be transmitted from the external power meter to the renewed energy meter.

In one embodiment, the load 600 may be an in-house installed electronic device and the external power source 300 may be a power station or substation that produces and supplies power to the power system. The power system refers to a collection of meters, electronic devices, etc. in the home. Also, the external power meter 400 may be a smart meter that measures the second amount of power supplied to the power system from the external power source 300.

Renewable energy, on the other hand, is pollution-free energy that can replace fossil fuels and nuclear power, including solar energy, wind power, hydro power, and bio energy. The renewable energy generation device 200 is a device capable of producing renewable energy and can be located inside or outside the power system. The renewable energy meter 500 is a device that can measure and transmit the amount of power produced by the renewable energy generation device 200. [

The monitoring unit 120 may calculate the second estimated supply power amount using the first power amount and the third power amount. Then, at least one of the second estimated supply power amount and the second power amount may be determined as the supply power amount of the external power source 300. [ The second estimated supply power amount may be the same as or different from the second power amount. According to an embodiment of the present invention, there is an advantage that an accurate supply power amount can be calculated by determining at least one of the second estimated supply power amount and the second power amount as the supply power amount of the external power source 300. [

In one embodiment, the monitoring unit 120 may calculate the second estimated supply power amount by subtracting the third power amount from the first power amount. The first power amount is the amount of power consumed in each load 600, the second amount of power is the amount of power supplied from the external power source 300, and the third amount of power is the amount of power supplied from the renewable energy generation device 200. Therefore, the sum of the second power amount and the third power amount is equal to the first power amount, and the second estimated supply power amount and the second power amount may be the same. The above-described process is summarized as Equation (2) below.

&Quot; (2) "

Figure 112016013805110-pat00002

Here, P A2 is a second estimated supply power amount, P 1 is a first power amount, P 2 is a second power amount, and P 3 is a third power amount.

Meanwhile, the monitoring unit 120 may calculate the third power amount by subtracting the second power amount from the first power amount. According to an embodiment of the present invention, when the third power amount is not received, the third power amount is calculated by subtracting the second power amount from the first power amount, thereby providing an amount of power even when the communication device fails.

In one embodiment, the first amount of power may be the total amount of power consumed by one or more loads 600 and may be the amount of power each of the one or more loads 600 consumes. In addition, the monitoring unit 120 may receive the total amount of power consumed by one or more loads 600 and calculate the amount of power each of the one or more loads 600 consumes. For example, the monitoring unit 120 may calculate a respective amount of power consumed by one or more loads 600 using a non-intrusive load monitoring (NILM) method. Non-interfering load monitoring is a technique that measures the overall voltage and current supply and predicts the power consumption and the electricity generation operation schedule for the individual load (600) in the home.

More specifically, the monitoring unit 120 analyzes a change in the electrical characteristics measured by the receiving unit 110, and identifies the home appliance as a power consumption subject based on the analysis result. Also, the monitoring unit 120 can estimate the power consumption of the identified home appliances. For this, the monitoring unit 120 may include a data collecting unit, a data processing unit, an event detecting unit, a feature extracting unit, a device identifying unit, and a power determining unit.

The data collecting unit captures the raw data received from the receiving unit 110. The data processing section aligns the current signal to the voltage signal with respect to the raw data captured by the data collecting section to secure an appropriate phase relationship. In addition, data is generalized for normalization and filtering is performed to extract harmonic characteristics (e.g., current harmonic power (CHP)). Specifically, the apparent power amount and the effective power amount of the first power amount are obtained, and the power factor (power factor) is calculated from the apparent power amount and the effective power amount.

The event detection unit detects an event occurring in the home appliance based on a change in the power factor provided from the data processing unit (switching on / off of the home appliance or switching of the operating state).

The feature extraction unit extracts the on / off timing of the home appliance and the power consumption pattern of the home appliance from the event detected by the event detection unit. For example, the washing machine differs greatly in the power consumption pattern when the rotating tub is rotated and when the rotating tub is not rotating. Also, since the rotation speed of the rotating tank in the washing and dehydrating steps is greatly different, the power consumption pattern at this time also differs greatly. However, since the television exhibits a substantially constant power consumption pattern without a large change in the power-on state, the power consumption pattern differs greatly from the above-mentioned washing machine. The feature extraction unit extracts a unique feature of the power consumption pattern of the home appliance from the event detection result of the event detection unit.

The device identification unit compares and analyzes the power consumption pattern extracted by the feature extraction unit with the reference data, and determines the type and operation state of the corresponding home appliance through the coincidence between the two data. Particularly, the device identification unit can identify what a plurality of home appliances are when a plurality of home appliances are simultaneously used by using the coefficient of the current harmonic power (CHP) secured by the data collection unit and the data processing unit.

The power determination unit can calculate the individual power amount of the corresponding home appliance by using the type and operation state of the home appliance identified in the apparatus identification unit.

The output unit 130 may output at least one of a first amount of power, a second amount of power, a third amount of power, and a respective amount of power consumed by one or more loads 600. [ According to one embodiment of the present invention, by outputting at least one of the first amount of power, the second amount of power, the third amount of power, and the amount of each of the amounts of power consumed by the one or more loads 600, have.

According to the present invention as described above, the receiving unit receives the amount of power from the distribution panel, the external power meter, or the renewable energy meter, thereby reducing the system construction cost. Further, the present invention has the effect of reducing the system construction cost by determining the amount of power supplied to the external power source or the renewable energy generation device by the monitoring unit.

Further, the present invention can calculate the amount of power supplied to the power system from the external power source by subtracting the amount of power supplied from the renewable energy generation device to the power system at the total amount of power consumed by the load, It is effective. Further, the present invention can calculate the amount of power supplied to the power system from the renewable energy generation device by subtracting the amount of power supplied from the external power source to the power system at the total amount of power consumed by the load, It is effective.

The present invention also has the effect of receiving the total amount of power consumed by one or more loads and calculating the amount of each power consumed by one or more loads, thereby providing each amount of power consumed by the load.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, But the present invention is not limited thereto.

Claims (14)

1. A power monitoring server for monitoring an amount of power in a power system including at least one load powered by an external power source and a renewable energy generation device,
A second power amount supplied from the external power source to the power system and a third power amount supplied from the regeneration energy generation device to the power system, A receiving unit for receiving from the meter; And
And a monitoring unit for calculating a first estimated supply power amount by using the first power amount and the second power amount and determining at least one of the first estimated supply power amount and the third power amount as a supply power amount of the regeneration energy generation device In addition,
Wherein the monitoring unit calculates the second amount of power by subtracting the third amount of power from the first amount of power when the second amount of power is not received through the receiving unit,
And the third amount of power is transmitted from the renewable energy meter to the external power meter.
The method according to claim 1,
The monitoring unit
And the first estimated supply power amount is calculated by subtracting the second power amount from the first power amount.
delete The method according to claim 1,
The first power amount
The total amount of power consumed by the one or more loads and the amount of each power consumed by the one or more loads.
The method according to claim 1,
The monitoring unit
And a power monitoring server for receiving the total amount of power consumed by the one or more loads and calculating the amount of each power consumed by the one or more loads.
The method according to claim 1,
And an output unit for outputting at least one of the first amount of power, the second amount of power, the third amount of power, and each amount of power consumed by one or more loads.
delete 1. A power monitoring server for monitoring an amount of power in a power system including at least one load powered by an external power source and a renewable energy generation device,
A second power amount supplied from the external power source to the power system, and a third power amount supplied from the regenerative power generator to the power system, the first power amount being the amount of power consumed by the at least one load, A receiving unit for receiving from the meter; And
And a monitoring unit for calculating a second estimated supply power amount by using the first power amount and the third power amount and determining at least one of the second estimated supply power amount and the second power amount as a supply power amount of the external power source,
Wherein the monitoring unit calculates the third amount of power by subtracting the second amount of power from the first amount of power when the third amount of power is not received through the receiving unit,
And the second power amount is transmitted from the external power meter to the renewable energy meter.
9. The method of claim 8,
The monitoring unit
And calculates the second estimated supply electric power by subtracting the third electric energy from the first electric energy.
delete 9. The method of claim 8,
The first power amount
The total amount of power consumed by the one or more loads and the amount of each power consumed by the one or more loads.
9. The method of claim 8,
The monitoring unit
And a power monitoring server for receiving the total amount of power consumed by the one or more loads and calculating the amount of each power consumed by the one or more loads.
9. The method of claim 8,
And an output unit for outputting at least one of the first amount of power, the second amount of power, the third amount of power, and each amount of power consumed by one or more loads.
delete
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101318891B1 (en) * 2013-01-18 2013-10-18 김혁 Power management system and operating method thereof
JP2015010941A (en) * 2013-06-28 2015-01-19 京セラ株式会社 Power display device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101318891B1 (en) * 2013-01-18 2013-10-18 김혁 Power management system and operating method thereof
JP2015010941A (en) * 2013-06-28 2015-01-19 京セラ株式会社 Power display device

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