KR20160129263A - Power measuring instrument having function of power management system - Google Patents

Abstract

The present invention relates to a power measuring apparatus having a function of a power management system (PMS) which adds a function of the PMS to a power measuring apparatus and enables an inverter control and a power management. The power measuring apparatus having a function of a PMS according to one embodiment of the present invention, in the power measuring apparatus installed to efficiently operate renewable energy systems such as solar power and wind power, and a battery energy storage system (BESS) connected to the renewable energy system, comprises: a power measuring module which measures at least one among a voltage, a current or a leakage current in a distribution box; a power analyzing module which calculates current power usage information, power consumption information or leakage current information on the basis of data measured by the power measuring module; a system operating analysis module which analyzes the current power usage information and generates control information of a power converting apparatus connected to each system in order to operate the renewable energy system or the BESS; and a communication module which communicates with the power converting apparatus and transmits the control information.

Description

[0001] The present invention relates to a power measuring instrument having a function of a power management system,

The present invention relates to a power meter, and more particularly, to a power meter having a function of a power management system capable of inverter control and power management by adding a function of a power management system (PMS) to a power meter .

Environmental degradation, resource depletion, etc., there is a growing interest in a system capable of storing electric power and efficiently utilizing stored electric power. In addition, interest in renewable energy that does not cause pollution during the development process is increasing.

In particular, renewable energy development using natural energy sources is emerging. There are many kinds of renewable energy, but there is a lot of solar power generation installed.

In order to reduce such fluctuations, the battery energy storage system (BESS), which stores energy using a battery, has appeared.

The power storage system is a system that links these renewable energy, the battery that stores the power, and the existing system power, and many research and development are being carried out in accordance with today's environment change.

In order to efficiently operate these new renewable energy and BESS, it is urgent to introduce a power meter having the function of a power management system (PMS) that controls new renewable energy and BESS.

The technology to be a background of the present invention is disclosed in Korean Patent Registration No. 10-1174891 (registered on August 20, 2012).

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above conventional problems, and it is an object of the present invention to improve management efficiency by discriminating the state of power operation by integrally managing a renewable energy system and / or a battery energy storage system (BESS) (PMS) that can be used in a power management system.

In addition, the present invention provides a power meter having a function of a power management system (PMS) capable of monitoring an electric power currently used and preventing a human body electric shock accident by detecting electric fire and leakage current by overloading through power management Provide for other purposes.

In addition, the present invention relates to a power management system (PMS) capable of providing a service to a user by configuring a system capable of detecting an electrical resistance by measuring an insulation resistance value by detecting a fire by a leakage current and measuring an impedance of the load Another object of the present invention is to provide a power meter having a function.

The problems to be solved by the present invention are not limited thereto, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the present invention provides a power meter having a function of a power management system. A power meter having a function of a power management system according to an embodiment of the present invention can efficiently operate a renewable energy system such as solar light or wind power generation and a battery energy storage system (BESS) A power measuring module for measuring at least one of a voltage, a current, and a leakage current in the distribution box; A power analysis module for calculating current use power information, power amount information, or leakage current information based on measurement data measured by the power measurement module; A system operation analysis module for analyzing the currently used power information and generating control information of the power conversion apparatus associated with each system for operating the renewable energy system or the battery energy storage system (BESS); And a communication module for communicating with the power conversion device and transmitting the control information.

According to an example, the power conversion apparatus may include a BESS inverter associated with the battery energy storage system (BESS) or a renewable inverter associated with the renewable energy system.

The power meter having the function of the power management system according to the embodiment of the present invention can improve the operating efficiency through the integrated management of the renewable energy system and / or the battery energy storage system (BESS) .

In addition, the power meter having the function of the power management system according to the embodiment of the present invention can monitor the current power used and prevent the human body electric shock accident by detecting the electric fire and the leakage current by the overload through the power management have.

In addition, the power meter having the function of the power management system according to the embodiment of the present invention can measure the insulation resistance value by detecting the fire due to the leakage current and measuring the impedance of the load, There is an advantage that the service can be supplied to the user.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description of the invention, It should not be construed as limited.
1 and 2 are block diagrams schematically illustrating a power meter having functions of a power management system according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Each drawing has been partially or exaggerated for clarity. It should be noted that, in adding reference numerals to the constituent elements of the respective drawings, the same constituent elements are shown to have the same reference numerals as possible even if they are displayed on different drawings. Also, components and acts referred to as " comprising (or comprising) " do not exclude the presence or addition of one or more other components and operations. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 and 2 are block diagrams schematically illustrating a power meter having functions of a power management system according to an embodiment of the present invention.

The power meter 100 having the function of the power management system according to an embodiment of the present invention may be a new & renewable energy system (NES) such as solar light or wind power generation, and / System (Battery Energy Storage System, BESS).

1 and 2, a power meter 100 having a function of a power management system includes a power measurement module 110, a power analysis module 120, a system operation analysis module 130, and a communication module 140 And the like.

The power measuring module 110 can measure at least one of a voltage, a current, and a leakage current in a home distribution box or the like.

The power analysis module 120 may calculate current use power information I1, power amount information I2 or leakage current information I3 based on the measurement data measured by the power measurement module 110. [

The measurement data may include a digital signal. According to an example, data used in the power analysis module 120 may be provided as a value of RMS (Root Mean Square). Therefore, the measured data can calculate the current, voltage, etc. through the RMS equation of the digital signal.

&Quot; (1) "

&Quot; (2) "

Therefore, the present invention can prevent the human body electric shock accident by monitoring electric power currently used and detecting electric fire and leakage current by overload through power management.

In addition, the present invention has an advantage of providing a service to a user by constructing a system that can prevent an electric accident in advance by measuring the insulation resistance value by detecting the fire by the leakage current and measuring the impedance of the load.

The system operation analysis module 130 analyzes the current usage information I1 to analyze the current usage information I1 in order to optimally operate the new renewable energy system NES and / or the battery energy storage system BESS, The control information I4 of the conversion apparatus 10 can be generated.

The analysis of the current usage information I1 may be performed to predict the integrated amount of power in units of 15 minutes on the basis of the currently used power so that the used amount of power does not exceed a preset predetermined value. The reason for the 15-minute power prediction is that the KEPCO calculates the peak charge with a 15-minute power value when calculating the charge. In addition, the information is analyzed to control the current power usage rather than the 15-minute predicted power amount so as not to exceed a certain range.

The control information 14 may include an operating point and / or an operating point of the power conversion apparatus 10.

The system operation analysis module 130 can perform control for optimal operation of the renewable energy system (NES) and / or the battery energy storage system (BESS) by using the communication with the power conversion apparatus 10.

Here, the power inverter 10 may include a BESS inverter 12 and / or a renewal inverter 14.

The BESS inverter 12 may be associated with a battery energy storage system (BESS). Further, as shown in Fig. 2, the renewal inverter 14 can be linked to the renewable energy system (NES).

Specifically, the system operation analysis module 130 communicates with the BESS inverter 12 through the analyzed current usage power information I1 to discharge the battery energy storage system BESS when the load usage amount is high, The load peak value can be lowered and the charge of the battery energy storage system (BESS) can be controlled to be performed when the load usage is small.

That is, the system operation analysis module 130 sends control information I4 such as charging, discharging and stopping to the BESS inverter 12 through the communication module 140 to determine the optimum operating and peak power of the BESS inverter 12 And the control can be performed so that the load factor is kept high.

The communication module 140 may communicate control information I4 by communicating with the power conversion device 10. [ 1 and 2, the communication module 140 communicates with the inverter communication unit 12a of the BESS inverter 12 and / or the inverter communication unit 14a of the renewal inverter 14 to generate the control information I4 ). ≪ / RTI >

The inverter control section 12b of the BESS inverter 12 and / or the inverter control section 14b of the renewal inverter 14 receive the BESS inverter 12, which is the power conversion apparatus 10, and / It is possible to control the renewal inverter 14.

In this way, according to the present invention, the system operation analysis module 130 analyzes the information based on the information of the power analysis module 120 and controls the BESS inverter 12 and / or the renewal inverter 140, Management and the power conversion apparatus 10 can be more efficiently managed.

Therefore, the present invention has the effect of integrally managing the renewable energy system (NES) and / or the battery energy storage system (BESS) and improving the operating efficiency through the discrimination of the power operation state.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments.

The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: Power converter
12: BESS inverter
14: Inverter for renewal
100: Power meter with function of power management system
110: Power measurement module
120: Power analysis module
130: System Operation Analysis Module
140: Communication module

Claims (2)

In a power meter installed for efficient operation of a renewable energy system such as solar power or wind power generation and a battery energy storage system (BESS) associated therewith,
A power measuring module for measuring at least one of voltage, current, or leakage current in the distribution box;
A power analysis module for calculating current use power information, power amount information, or leakage current information based on measurement data measured by the power measurement module;
A system operation analysis module for analyzing the currently used power information and generating control information of the power conversion apparatus associated with each system for operating the renewable energy system or the battery energy storage system (BESS); And
And a communication module that communicates with the power conversion device to transmit the control information. The method according to claim 1,
The power conversion apparatus includes:
A BESS inverter associated with the battery energy storage system (BESS)
And a renewal inverter connected to the renewable energy system.

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