KR101298500B1 - Micro-Grid Simulation Apparatus and Power Management System - Google Patents

Abstract

A microgrid simulation apparatus and power management system are disclosed.
A microgrid simulation device for producing power and consuming the power using a load; And a power management device connected to the microgrid simulation device to receive power data and control an operation of the microgrid simulation device based on the received power data. do.
According to the present embodiment, it is possible to produce power using renewable energy, to reduce environmental pollution, and to reduce fuel cost, and to calculate an appropriate capacity for power generation using a simulation device, and thus to implement an actual microgrid system. The installation cost is reduced. In addition, the remote management and power management system enables effective management of power generation, reduces the maintenance cost by reducing the number of resident management personnel, and has the effect of high efficiency power management through load data and power generation analysis.

Description

Micro-Grid Simulation Apparatus and Power Management System

This embodiment relates to a microgrid simulation apparatus and a power management system. More specifically, in order to develop a proper capacity estimation and operation algorithm of distributed power required to implement a microgrid power management system using solar, wind and diesel power generation, solar, wind and diesel power generation are simulated. The present invention relates to a microgrid simulation device and a power management system including a power management device for implementing and controlling and managing the same.

The contents described in this section merely provide background information on the present embodiment and do not constitute the prior art.

Due to the problem of environmental pollution due to the power generation system using fuel, power generation using renewable energy such as solar, wind power, and hydro power generation is attracting attention. Such a power generation system using renewable energy is disclosed in Korean Unexamined Patent Publication No. 2012-0022077.
However, such a power generation system has a problem that the initial investment is expensive, and it is difficult to calculate the proper capacity for the power generation. In addition, in the case of isolated terrain such as islands, since most of the power is supplied to diesel generators, fuel costs and maintenance costs are high, and management personnel must reside.

In order to solve the above-described problems, by implementing the microgrid distributed power supply simulation apparatus, the present embodiment can calculate the proper capacity for power generation, and accordingly, it is possible to implement the power generation system in the actual region, thereby reducing the initial investment cost. In addition, the main purpose is to provide a microgrid distributed power supply system and a power management system to reduce the fuel cost, maintenance cost and management resident manpower of isolated terrain, such as islands using a microgrid distributed power system.

According to an aspect of the present embodiment to achieve the above object, a microgrid simulation device for producing power and consuming the power using a load; And a power management device connected to the microgrid simulation device to receive power data and control an operation of the microgrid simulation device based on the received power data. do.

In addition, according to another aspect of the present embodiment, a distributed power supply unit for generating power using at least one of the power generation method of photovoltaic power generation, wind power generation and diesel power generation; A load controller configured to receive power generated from the distributed power supply unit and consume power using a load; And a data collector configured to collect data on the power produced by the distributed power supply unit and data on the power consumed by the load control unit.

In addition, according to another aspect of the present invention, the microgrid simulation device is connected to the communication unit for transmitting and receiving data; A load manager configured to manage a load pattern by using load information consumed by the microgrid simulation apparatus; A data manager analyzing the power data received from the microgrid simulation apparatus; And it provides a power management device comprising a power control unit for controlling the amount of power produced by the microgrid simulation apparatus.

In addition, according to another aspect of the present invention, the process of producing power using at least one of the solar, wind and diesel power generation module in the distributed power source; Detecting power amount data of the power by the distributed power supply unit and transmitting the power amount data to the data collection unit; Transferring the generated power from the distributed power supply to a load control unit for use; Transmitting data on power consumed by the load controller and extra power to the data collector; Transmitting data received from the distributed power supply unit and the load control unit to a power management device by the data collection unit; And the power management device, based on the received data, controlling the power generation of the distributed power supply unit and calculating a proper capacity of the production power.

In addition, according to another aspect of the present invention, the data processing device, the process of generating power data corresponding to solar, wind and diesel power generation in the distributed power source; Transmitting the power data from the distributed power supply unit to a data collection unit; Transmitting the power data to the load controller by the distributed power supply unit; Transmitting power consumption data on power consumed by the load controller to the data collector; Transmitting data received from the distributed power supply unit and the load control unit to a power management device by the data collection unit; And the power management apparatus provides a computer readable recording medium having recorded thereon a program for realizing a process for calculating an appropriate capacity of the production power of the distributed power supply unit based on the received power data and the power consumption data.

As described above, according to the present embodiment, power can be generated using renewable energy to reduce environmental pollution, and fuel cost for diesel power generation can be applied to a real microgrid power system using a simulation device. There is an effect that can calculate the proper capacity of electricity generation of renewable energy and diesel generation. In addition, by calculating the proper capacity for power generation, there is an effect that the initial installation cost for implementing the actual microgrid system is reduced. In addition, by implementing a remote management and power management device, it is possible to effectively manage power generation, reduce the number of resident management personnel, reduce maintenance costs, and high-efficiency power management through load data and power generation analysis. .

1 is a block diagram schematically showing a microgrid power management system according to an embodiment of the present invention;
2 is a block diagram schematically showing a microgrid simulation apparatus according to the present embodiment;
3 is a flowchart illustrating a microgrid power management method according to the present embodiment;
4 is an exemplary diagram of a microgrid power management system according to the present embodiment;
5 is a configuration diagram schematically showing a power management device according to the present embodiment;
6 is an exemplary view of a control module of a power management device according to the present embodiment;
7 is an exemplary diagram of power operation of the microgrid power management system according to the present embodiment.

Hereinafter, the present embodiment will be described in detail with reference to the accompanying drawings.

1 is a block diagram schematically illustrating a microgrid power management system according to an exemplary embodiment.

The microgrid power management system according to the present embodiment includes a microgrid simulation apparatus 100, a power management apparatus 140, a data server 150, and a remote monitoring apparatus 160. In addition, the microgrid simulation apparatus 100 includes a distributed power supply unit 110, a data collection unit 120 and a load control unit 130. Here, each component included in the microgrid power management system is merely illustrative of the technical idea of the present embodiment, and those skilled in the art to which the present embodiment belongs may have the essential characteristics of an embodiment of the present invention. Various modifications and variations will be possible without departing from the scope of the invention.

The microgrid simulation apparatus 100 refers to a simulation apparatus for calculating an appropriate capacity of power in a reduced module before applying the microgrid system and applying the same to a real microgrid system. The distributed power supply unit 110 collects data. The unit 120 and the load control unit 130 is included. Here, the microgrid system refers to a local power supply system centered on an independent distributed power source, not a conventional unidirectional power system in which a power plant delivers power to a consumer. On the other hand, the microgrid simulation apparatus 100 according to the present embodiment is shown to be implemented by reducing the actual microgrid device at a predetermined ratio, but is not necessarily limited thereto, and may be implemented as a program capable of simulating the microgrid device. It may be.

Each part included in the microgrid simulation apparatus 100 according to the present embodiment will be described below.

The distributed power supply unit 110 refers to a module that serves as a power plant that generates power in the microgrid simulation apparatus 100. More specifically, it refers to a module implemented by reducing the power generated by solar power, wind power, hydro power, and diesel power at a predetermined rate. For example, the solar and wind generators may be implemented as a 1 to 2 kW module that can be input to vary the weather conditions and load conditions, the diesel generator may be implemented in a 2 to 5 kW class of 220V, 60Hz output. . Here, the diesel generator may be implemented by substituting a gasoline generator or a motor and a generator set when the diesel generator is reduced in a predetermined ratio.

   The distributed power supply unit 110 according to the present embodiment is preferably implemented based on solar, wind, and diesel power generation methods, but is not necessarily limited thereto. Any power generation method capable of producing power may be reduced to a predetermined ratio. Can be implemented.

The data collector 120 is a module that collects all data for the microgrid simulation apparatus 100, and receives weather data, production power data, and load data from the distributed power supply unit 110 and the load control unit 130. In addition, the data collector 120 transmits the collected data to the power management device 140 to control the microgrid simulation apparatus 100. On the other hand, the data collection unit 120 according to the present embodiment is shown to be implemented separately from the distributed power supply unit 110 and the load control unit 130, but is not necessarily limited to this, distributed power supply unit 110 and the load control unit 130 It may be included in the implementation.

The load control unit 130 refers to a module consuming power generated from the distributed power supply unit 110. In more detail, the load controller 130 refers to a module implemented by reducing the power consumed in the actual microgrid device at a predetermined ratio.

The power management device 140 is a module for controlling the microgrid simulation device 100. The power management device 140 analyzes the weather data, the production power data, and the load data received from the data collection unit 120 to perform the microgrid simulation device 100 in real time. It is desirable to implement a digital signal processor (DSP) or a microprocessor having a higher computational capability capable of high-speed operation to control.

In FIG. 1, the microgrid simulation apparatus 100 is shown as being implemented by reducing the actual power generation apparatus at a predetermined ratio, but is not necessarily limited thereto. For example, the microgrid simulation apparatus 100 may be implemented to include virtual loads that generate virtual power by using a virtual power generation device that mimics an actual power generation device, and receive and consume the virtual power.

The power management apparatus 140 according to the present embodiment includes a communication module to connect with the microgrid simulation apparatus 100. For example, the power management device 140 may be connected using a protocol such as RS-232, RS-422, RS-485, TCP / IP, or short-range communication such as Zigbee. In addition, the power management apparatus 140 analyzes the power data received from the microgrid simulation apparatus 100 and controls the microgrid simulation apparatus 100 based on the analyzed result.

On the other hand, the power management device 140 is shown to be connected to the microgrid simulation apparatus 100, but is not necessarily limited to the simulation purposes, when implementing the actual microgrid system, may be connected for power management.

The data server 150 according to the present embodiment connects the power management device 140 and the remote monitoring device 160, and records the weather data, the production power data, and the load data analyzed by the power management device 140. Save it.

The remote monitoring apparatus 160 refers to a terminal capable of transmitting and receiving various data through the data server 150 under the control of an administrator, and may be a tablet PC, a laptop, a personal computer. ), A smart phone, and the like. That is, the remote monitoring device 160 may include a memory for storing a program for accessing the power management device 140 through the data server 150, a microprocessor for inputting and controlling power management data by executing a program, and power. The device includes a screen display unit for monitoring the management device 140. That is, the remote monitoring device 160 may be any terminal as long as it can transmit and receive data with the power management device 140 through the data server 150, and a control computer, a notebook computer, a communication terminal, a PDA, a tablet PC, and the like. It is a broad concept that encompasses any data communication computing device.

In the present embodiment, the remote monitoring device 160 is connected using a protocol such as Telnet, TCP / IP, and Simple TCP / IP Messaging (STM) to access the power management device 140 via the data server 150. Then, the power analysis information is received from the power management device 140 and monitored through the display unit provided. Here, the power analysis information refers to information obtained by analyzing the weather data, the production power data, and the load data of the microgrid simulation apparatus 100 by the power management apparatus 140.

2 is a block diagram schematically showing a microgrid simulation apparatus according to the present embodiment.

The microgrid simulation apparatus 100 according to the present exemplary embodiment includes a distributed power supply unit 110, a data collection unit 120, and a load control unit 130. In addition, the distributed power supply unit 110 includes a photovoltaic module 210, a wind power module 214, a diesel power module 218, and a data detection module 219, and the data collector 120 collects weather data. Module 220, power data collection module 224, and load data collection module 228. Here, each component included in the microgrid simulation apparatus 100 is merely illustrative of the technical idea of the present embodiment, and a person having ordinary knowledge in the technical field to which the present embodiment belongs includes one embodiment of the present invention. Various modifications and variations may be applied without departing from the essential characteristics.

The distributed power supply unit 110 includes a solar power generation module 210, a wind power generation module 214, a diesel power generation module 218, and a data detection module 219.

The photovoltaic module 210 and the wind power module 214 according to the present embodiment mean a power generation module that generates electric power using renewable energy such as sunlight and wind volume. Here, the photovoltaic module 210 and the wind power module 214 is preferably implemented as a 1 to 2 kW class module that can be input to vary the weather conditions and load conditions, but is not necessarily limited to this, the actual solar It can be implemented by reducing the power output of optical power plants and wind power plants at various rates.

The diesel power generation module 218 refers to a module of generating power by inducing expansion energy generated by burning a mixed liquid of heavy oil and air into a rotary motion. Diesel power generation module 218 according to the present embodiment may be implemented in 2 to 5 kW class of 220V, 60Hz output. Here, the diesel generating module 218 is shown to be implemented as a diesel generator, but is not necessarily limited thereto, and when reduced to a predetermined ratio, may be implemented by replacing with a gasoline generator or a motor and a generator set.

 The data detection module 219 refers to a module for detecting distributed power data for the photovoltaic module 210, the wind power module 214, and the diesel power module 218. Here, the distributed power data includes electrical elements such as voltage, current, and frequency for power generated by each module, and state elements such as on / off state and battery state of the switch, and affects solar power generation and wind power generation. Impacts include environmental factors such as temperature, humidity, wind, and sunlight.

The data collector 120 includes a weather data collection module 220, a power data collection module 224, and a load data collection module 228. In addition, the data collector 120 transmits weather data, power data, and load data to the power management device 140.

The meteorological data collection module 220 receives data on meteorological conditions such as temperature, humidity, wind, sunshine, and the like that affect the power generation of the photovoltaic module 210 and the wind power module 214. The module receives from the 210 and the wind power generation module 214. The power data collection module 224 refers to a module that receives data such as a voltage, a current, a frequency, and the like for power generated from photovoltaic power generation, wind power generation, and diesel power generation from the distributed power supply unit 110. The load data collection module 228 refers to a module that receives data on power consumed and redundant power from the load controller 130.

3 is a flowchart illustrating a microgrid power management method according to the present embodiment.

The distributed power supply unit 110 generates power by using at least one of the solar power module 210, the wind power module 214, and the diesel power module 218 (S310). For example, the photovoltaic module 210 and the wind power module 214 can produce 1 to 2 kW of power, and the diesel power module 218 can produce 2 to 5 kW of 220V, 60 Hz output. The distributed power supply unit 110 detects power amount data on the generated power and transmits it to the data collection unit 120 (S320).

The power produced by the distributed power supply unit 110 is transferred to the load control unit 130 for consumption at the load (S330). Here, the load control unit 130 transmits data on the consumed power and the extra power to the data collection unit 120 (S340).

The data collection unit 120 transmits the data received from the distributed power supply unit 110 and the load control unit 130 to the power management device 140 (S350).

The power management device 140 controls the production amount of the power of the distributed power supply unit 110 based on the received data, and calculates an appropriate amount of production power for implementing the actual microgrid system (S360).

4 is an exemplary diagram of a microgrid power management system according to an embodiment of the present invention.

The power produced by the photovoltaic module 210 and the wind power module 214 is charged with a battery, and the power produced by the diesel power module 218 is charged to the battery through a converter. The power produced is consumed by loads such as homes, buildings and factories.

Data such as weather data, power data, and load data for the microgrid simulation apparatus 100 are transmitted to the power management apparatus 140 using the RS-482 communication scheme. The power management device 140 controls the amount of power produced by the microgrid simulation device 100 based on the transmitted data. For example, if power from solar and wind is charged to a battery above a certain threshold, it reduces power generation in diesel generation. In addition, when the battery is charged with power using solar and wind below a certain standard, the power generation of diesel power generation is increased to supply to the load side. Here, the above-described power control may be wirelessly connected to the remote monitoring device 160 from the power management device 140 so that an administrator can control the remote monitoring device 160 power management device 140 from a long distance.

5 is a configuration diagram schematically showing a power management device according to the present embodiment.

The power management device 140 according to the present embodiment includes a communication unit 510, a power control unit 520, a load management unit 530, and a data management unit 540. Here, each component included in the power management device 140 is merely illustrative of the technical idea of the present embodiment, and those of ordinary skill in the art to which the present embodiment belongs are essential to one embodiment of the present invention. Various modifications and variations can be applied without departing from the characteristics.

The communication unit 510 transmits and receives data with the microgrid simulation apparatus 100 and the remote monitoring apparatus 160. The communication unit 510 according to the present embodiment may use a communication protocol such as RS-232, RS-422, RS-485, a network protocol such as TCP / IP, and a short range communication such as Zigbee communication to transmit and receive data. .

The power control unit 520 refers to a module for controlling the power produced by the distributed power supply unit 110. The power control unit 520 according to the present embodiment means controlling power generation based on the power data received from the microgrid simulation apparatus 100. In more detail, the power controller 520 analyzes one or more of weather data, power data, and load data received from the data detection module 219 in the data manager 540, and according to the analyzed result, solar and wind power. And increase or decrease respective power generation for diesel generation. For example, if the load consumed in the morning with a small amount of solar radiation increases, the power generation by diesel generation is increased to supply power accordingly, and in the afternoon with the same load and the amount of solar radiation, the electric power charged with solar power generation Use

The load manager 530 refers to a module that manages a pattern of loads based on data on loads consumed by the load controller 130. Here, the pattern of loads also includes information such as overload or unusual momentary loads.

The data manager 540 refers to a module that analyzes power data received from the microgrid simulation apparatus 100. In more detail, data such as weather data, power data, load data, and the like are received from the data detection module 219 and analyzed. Here, the weather data includes information such as temperature, humidity, wind direction, solar radiation, and the like, and the power supply data includes information such as voltage, current, frequency, and the like for power generated in photovoltaic power generation, wind power generation, and diesel power generation. In addition, the load data includes information such as voltage, current, frequency, and the like about the power consumed by the load controller 130 and the extra power.

The data manager 540 according to the present exemplary embodiment analyzes data such as weather data, power data, load data, and the like, and according to the analyzed data, the power controller 520 and the load manager 530 use the microgrid simulation apparatus 100. ) To control.

6 is an exemplary view of a control module of the power management apparatus according to the present embodiment.

FIG. 6 illustrates a mode controlling module, a power control module, an automatic control module, and a switching control module in the module for controlling the microgrid simulation apparatus 100 in the power management apparatus 140, but this is an embodiment of the present invention. And are not necessarily limited thereto.

The mode control module is a module for overall control of the microgrid simulation apparatus 100. The mode control module determines the climatic state, the solar light, the wind and the diesel generator state, and the battery storage state to enable stable power usage.

The power control module refers to a module that balances power generation for solar and wind power generation and diesel generation. For example, when the amount of solar radiation or wind is low and the power generated by solar and wind power generation is reduced below a certain standard, the power generation through diesel generation is increased to balance the overall power production.

The automatic control module automatically adjusts the amount of power generation through a preset reference value, and the switching control module controls the power generation by turning on / off the switch through a 0 or 1 signal using a switching function.

7 is an exemplary diagram of power operation of the microgrid power management system according to the present embodiment.

In FIG. 7, the power management device 140 is connected to the microgrid simulation device 100 to control the solar power module 210, the wind power module 214, and the diesel power module 218 to charge and discharge the battery. Indicates.

For example, STEP 1 is a state of the photovoltaic module 210, the wind power module 214, and the diesel power module 218 checked at 12 o'clock, and use solar power and wind power due to lack of solar radiation and wind volume. When there is little power stored in the battery, and the load increases to increase the power consumption, it means to use the power stored in the battery and part of the power generated by diesel generation for the load.

STEP 2 shows the state of the photovoltaic module 210, the wind power module 214, and the diesel power module 218 checked at 15 o'clock, and all of the power charged in the battery using solar power and wind power generation. When it is exhausted and the load is reduced, the power generated by diesel generation is used for the load without using solar and wind power.

STEP 3 shows the state of the solar power module 210, the wind power module 214, and the diesel power module 218 checked at 16:00, and the battery and diesel power charged using solar and wind during the day Power can be supplied to meet the rapidly increasing load in the evening. In addition, the remaining power and diesel power generation after the supply can be used to store the power to be used until the next day after 18:00.

The foregoing description is merely illustrative of the technical idea of the present embodiment, and various modifications and changes may be made to those skilled in the art without departing from the essential characteristics of the embodiments. Therefore, the present embodiments are to be construed as illustrative rather than restrictive, and the scope of the technical idea of the present embodiment is not limited by these embodiments. The scope of protection of the present embodiment should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

100: microgrid simulation device 110: distributed power supply
120: data collection unit 130: load control unit
140: power management device 150: data server
160: remote monitoring device 210: solar power module
214: wind power generation module 218: diesel power generation module
219: data detection module 220: weather data collection module
224: power data collection module 228: load data collection module

Claims (18)

Voltage, current for power generated through a power generation device in which at least one distributed power generation device of solar power, wind power generation, and diesel power generation is reduced by a predetermined ratio or a virtual power device corresponding to the distributed power generation device. And at least one of load data including information on power consumption including at least one or more information of frequencies, power consumption consumed among the power through the provided load, and redundant power, and weather data affecting the production of the power. A microgrid simulation device for detecting one or more data and collecting the detected power data, the load data and the weather data; And
Mode control for determining a climate state, solar light, wind power and diesel generator state, and battery storage state by analyzing at least one of the power data, the load data, and the weather data received from the microgrid simulation apparatus; At least one of power control for controlling the output of distributed power using a power generation device, automatic control for controlling the output of the distributed power through a predetermined reference value, and switching control for controlling the output of the distributed power by switching on / off Power management device to control
Power management system comprising a. delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete

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