KR20170023379A - System for controlling peak and supplying emergency power using distributed photovoltaic power - Google Patents

System for controlling peak and supplying emergency power using distributed photovoltaic power Download PDF

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KR20170023379A
KR20170023379A KR1020150148520A KR20150148520A KR20170023379A KR 20170023379 A KR20170023379 A KR 20170023379A KR 1020150148520 A KR1020150148520 A KR 1020150148520A KR 20150148520 A KR20150148520 A KR 20150148520A KR 20170023379 A KR20170023379 A KR 20170023379A
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power
emergency
unit
photovoltaic
input unit
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KR1020150148520A
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Korean (ko)
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KR101741128B1 (en
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염성도
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주식회사 그랜드
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • Y02B70/3291—

Abstract

The present invention relates to a dispersion peak control and emergency power supply distribution system using photovoltaic power generation, and more particularly, to a photovoltaic power input unit for power reception of a photovoltaic power generation system, a general power supply unit for supplying power to a power distribution system, The emergency power supply unit, the power distribution system, and the emergency power generation system, which supply either one of power distribution system power or power of the emergency power generation system selected by the power supply control unit A photovoltaic power generation monitoring unit for monitoring the presence or absence of power of the photovoltaic power generation system and the amount of power, receiving a power control value for peak control of the power control monitoring unit and delivering the power control value to the photovoltaic dispersion peak control unit, Photovoltaic system, emergency power system, peak value collected and data, peak And a photovoltaic dispersion peak control unit for dispersing and controlling the maximum demanded power in the customer by controlling the power supply / shutdown operation to each load in the customer by comparing power control values for the solar power, It adjusts the maximum demand power value (peak value) that spikes instantly by distributing electric power, and it can distribute electric power to the emergency power source at a certain place in case of fire and emergency disaster.

Figure P1020150148520

Description

Technical Field [0001] The present invention relates to a distributed peak control system using a photovoltaic power generation system and a distributed power supply system using a distributed photovoltaic power supply system,

The present invention relates to a distributed peak control system and an emergency power supply dispersion system using photovoltaic power generation. More particularly, the present invention relates to a system for distributing and supplying power to a photovoltaic power generation system by adjusting the maximum demand power value (peak value) And more particularly, to a distributed peak control and emergency power supply distribution system using photovoltaic power generation capable of distributing power to an emergency power source at a specific point in a disaster.

In general, when demand for electricity is increased in the summer season and during the winter season, the peak demand power, which is the basis of the base charge, increases along with the increase in the power consumption. Once the peak demand value (peak value) If the power is renewed, the base rate will be applied to the renewable energy for one year and electric power charges will be charged.

Therefore, in the case of electricity consumers of a certain size or more, various efforts are being made to reduce the maximum demand power value (peak value), which is the basis for imposing a base charge, in power reception and use in KEPCO. When the demand power reaches the peak value, the load is prioritized through the demand power (peak) control program, and the power that is supplied to some load is cut off artificially in the order of lower priority.

However, in the above method, it is necessary to constantly modify and manage the peak demand power (peak) control program in order to cope with such fluctuations when there are places where important use points change from time to time. There is a problem that electric power is cut off at the peak of the demand electric power even when the electric power is supplied to an unnecessary portion, which is actually an important point, not being actually used, and thus there is a problem that it can be operated inefficiently.

On the other hand, an emergency generator that generates electric power by using sunlight is configured to be supplied with power to an emergency supply line in operation, and is configured to be supplied with power mainly to an emergency supply line such as a fire extinguisher pump and an emergency exit guide lamp.

In case of an emergency, partial power supply is provided to prevent a short circuit or an electric shock accident due to inundation or the like and to partially block the access control, for example, the entire opening or closing of the door can not be normally performed , CCTV, etc. are not operated, so that the internal situation can not be confirmed by CCTV or the like.

Accordingly, there is a possibility that the power shutdown of the critical points due to the partial power supply during the emergency disaster may eventually lead to the rescue in a state in which the internal situation is not known. Especially, in case of fire, The following cases have often occurred.

KR 10-131423 B1 Registration March 31, 2013

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in an effort to solve the above problems, and it is an object of the present invention to provide a solar power generation system capable of adjusting the maximum demand power value (peak value) And to provide a distributed peak control and emergency power supply distribution system using photovoltaic power generation capable of distributing power to an emergency power source at a certain point in time.

In order to accomplish the above object, an embodiment of the present invention provides an electric power supply system including a electric power supply input unit for receiving electric power of a power distribution system and an emergency electric power input unit for receiving electric power of the emergency power generation system, For supplying power to emergency loads of the emergency power input unit and supplying the emergency load of the emergency power input unit to each emergency load in the customer, A solar power input unit for receiving the power of the power generation system, a general power supply unit connected to each general load in the customer to selectively supply or cut the power of the power distribution system to each general load, a solar power dispersion peak unit connected to each emergency load in the customer, Either the power distribution system power or the emergency power system power selected by The emergency power supply unit, the power distribution system, and the emergency power generation system are always monitored to determine the maximum demanded power amount in the customer, and it is determined whether the calculated maximum demanded power amount exceeds the predetermined target amount of power, A power control monitoring unit for outputting a power control value for peak control when the maximum demanded power amount exceeds the target power amount, a power control monitoring unit for monitoring the power amount and power amount of the photovoltaic power generation system and for controlling the peak value of the power control monitoring unit (S1), a power amount (S2), a power generation state value (S3) of an emergency power generation system, and a load to be supplied to a load (S4) for data acquisition and calculates a power control value S for peak control of the power control monitoring unit 5) is compared with data values to control the power supply / cut-off operation to each load in the customer to distributively control the maximum demanded power in the customer and distribute the emergency power supply in a distributed manner. Distributed peak control using power and emergency power distribution system.

According to the present invention, it is possible to distribute power by dividing the peaks of the summer or winter season having high peaks in the daytime by the level by using the power of the photovoltaic power generation system, and to distribute power at important points It is possible to utilize the power distribution system power without increasing the peak value while supplying power to the power supply system. Therefore, there is an advantage that high efficiency can be obtained while consuming the same amount of power.

Further, since the power supply control is free, it is possible to supply and cut off electric power at a specific location when an emergency occurs, and at a time when solar power is not generated, electric power of a specific location can be supplied by using the power of the emergency generator. Can be used as a.

1 is an overall configuration diagram of a dispersion peak control and emergency power supply dispersion supply system using solar photovoltaic power generation according to the present invention.
2 is a flowchart illustrating an operation performed when a peak is generated in a dispersion peak control and emergency power supply dispersion supply system using solar photovoltaic power according to the present invention.
FIG. 3 is a flowchart illustrating an operation performed in an emergency state in a distributed peak control and emergency power supply distribution system using photovoltaic power generation according to the present invention.

Hereinafter, the configuration and operation of the dispersion peak control and emergency power supply dispersion supply system using the solar photovoltaic power according to the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that the words or words used in the present specification and claims are not to be construed in a conventional or dictionary sense and that the inventor can properly define the concept of a term in order to describe its invention in the best possible way And should be construed in light of the meanings and concepts consistent with the technical idea of the present invention. Therefore, it should be understood that the embodiments described herein and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and that various equivalents and modifications may be made thereto at the time of the present application shall.

FIG. 1 is a general configuration diagram of a dispersion peak control and emergency power supply dispersion supply system using solar photovoltaic power according to the present invention. As illustrated in FIG. 1, the dispersion peak control and emergency power supply dispersion supply system of the present invention includes: A power control unit 600, a photovoltaic power generation monitoring unit 700, and a solar light dispersion peak control unit 800. The photovoltaic power input unit 300, the normal power supply unit 400, the emergency power supply unit 500, The distributed peak control and emergency power supply dispersion supply system of the present invention includes a KEPCO power input unit 100 for receiving power of a power distribution system and an emergency power input unit 200 for receiving power of the emergency power generation system Power of the power system of the normal electric power input unit 100 is supplied to the general load and the emergency load in the receptacle, and the emergency power generation system power of the emergency power input unit 200 To be applied to the peak control suyongga within and dispersed power supply of the power supply to be supplied to the load in each emergency suyongga may be implemented.

The solar power input unit 300 receives the solar power generation system power generated by the solar power generation apparatus 301. For this purpose, the solar power input unit 300 may include a grid-connected solar power generator 301, a solar light connecting unit 302, and a grid-connected solar inverter 303.

The grid-connected photovoltaic device 301 is composed of a plurality of solar cell modules and generates power by solar light.

The photovoltaic connection module 302 connects the direct current power generated in the grid-connected photovoltaic power generator 301 to the required power in the system by connecting the direct current / parallel connection.

The grid-connected solar inverter 303 converts the solar photovoltaic power collected through the solar photovoltaic module 301 to AC and connects it to the power grid of the distribution system.

The general power supply unit 400 is connected to each general load in the customer and selectively supplies or blocks the power distribution system power of the electric power input unit 100 to each general load. Particularly, the general power supply unit 400 is connected to each general load in the customer, and the operation is automatically controlled by the solar light dispersion peak control unit 800 to select the power distribution system power of the electric power input unit 100 as each general load Supply or shut down.

The emergency power supply unit 500 is connected to each emergency load in the customer and is connected to the distribution system power of the electric power input unit 100 selected by the solar light dispersion peak control unit 800 or the electric power of the emergency power system of the emergency power input unit 200 To each emergency load. The emergency power supply unit 500 may further include an emergency power current sensing unit 501 and a power selection unit (ATS).

The emergency power current detection unit 501 is connected to the emergency power generation system power line of the emergency power input unit 200 and senses the current of the emergency power generation power and delivers the detected current to the solar light dispersion peak control unit 800.

The power selection unit (ATS) is composed of one movable terminal and two fixed contacts, which are operated by the solar light dispersion peak control unit 800, and the movable terminal is connected to the emergency load in the accommodation, A fixed contact is connected to an emergency system power line of the system power line and the emergency power input unit 200 so that the power distribution system power of the electric power input unit 100 or the power system power of the electric power input unit 100 is changed by the switching operation of the movable terminal by the solar light dispersion peak control unit 800 Selects one of the emergency system power of the emergency power input unit (200), and supplies power to each emergency load.

The power control monitoring unit 600 monitors the operation and the amount of electric power of the electric power input unit 100 and the emergency power input unit 200 at all times to calculate the maximum demanded electric power amount in the customer and the calculated maximum demand electric power amount exceeds the predetermined target electric amount amount And transmits a power control value for peak control to the solar monitoring unit 700 when the maximum demanded power amount in the customer exceeds the target power amount.

The photovoltaic power generation monitoring unit 700 monitors the photovoltaic power generation power and the amount of power by measuring the photovoltaic power supplied from the photovoltaic power input unit 300, And transmits the received power control value to the solar light dispersion peak control unit 800. The solar light dispersion peak control unit 800 receives the power control value for the peak control of the sunlight.

The solar light dispersion peak control unit 800 includes a photovoltaic power generation system current and voltage measurement value S1 received at the solar power input unit 300, a power amount S2, an emergency power generation system 200 received at the emergency power input unit 200, The amount of electric current S6 supplied to each load sensed through the current sensor 401 of the general electric power supply unit 400 and the maximum demanded electric power amount S4 corresponding thereto are collected and data, The power control value S5 for peak control of the power control monitoring unit 600 is compared with the collected data values to control the power supply / cutoff operation to each load in the customer to dispersively control the maximum demanded power amount in the customer Distributes emergency power supply. In particular, the solar light dispersion peak control unit 800 controls the current and voltage measurement value S1 of the photovoltaic power generation system received at the solar power input unit 300, the power amount S2, The generation state value S3 of the emergency system and the maximum demanded power amount S4 supplied from the general power supply unit 400 to each load are classified by mode or by level and data is classified by the peak value of the power control monitoring unit 600 The power control value S5 for each mode is compared with the data values for each mode to adjust the power supply / cutoff operation to each load in the reception by mode or level, As shown in FIG.

2 is a flow chart illustrating a dispersion peak control operation performed by the sunlight dispersion peak control unit 800 when a peak occurs in a dispersion peak control and emergency power supply dispersion system using solar power generation power according to the present invention, The process of the dispersion peak control operation by the solar photovoltaic dispersing peak control unit 800 of the present invention is such that when a peak occurs, the solar power system power data (current and electric power) of the solar power system power collected from the solar power power input unit 300 (The measured voltage value S1 and the power amount S2) and the data of the distribution system power (maximum demanded power amount S4) by the power control monitoring unit 600 and the power control value S5 for peak control Step S801: Power distribution system power and photovoltaic power system power are inputted through analysis of power generation value supplied from the photovoltaic power generation system and maximum demand power amount (peak value) of power distribution system power and peak control (S802) of supplying electric power to the power distribution system and selectively supplying the photovoltaic power system power to the cutoff point (S803); determining a power supply / (S804 and S805) to return to the data comparison and analysis step (S801) in order to repeat the above operation when a peak occurs, or to process normal power when a peak is not generated, .

3 is a flowchart illustrating an emergency power supply dispersion operation performed by the solar light dispersion peak control unit 800 when an emergency state occurs in the dispersion peak control and emergency power supply dispersion supply system using the solar power generation power according to the present invention, As shown in FIG. 3, the process of the distributed power supply operation by the solar light dispersion peak control unit 800 according to the present invention is performed in such a manner that data of the solar power generation system power collected from the solar power input unit 300 (The current and voltage measured value S1 and the power amount S2) and the power generation state value S3 of the emergency power generation system received by the emergency power input unit 200 are compared with each other to determine whether or not the solar power generation system power is available (S811, S812). When the power of the photovoltaic power generation system is available, it is confirmed whether the power supply of the photovoltaic power generation system is selected by the manager, (S813, S814), and when the power of the photovoltaic power generation system is not available, the emergency generator is operated to supply the emergency power system power first, or the power supply selection of the photovoltaic power generation system by the manager (S815, S816) for supplying power to the emergency power generation system in the absence of the emergency state, returning to the data comparison and analysis step (S811) for repeating the above operation when the emergency state is maintained, (S817, S818) of processing the power to be supplied with normal power upon release.

The overall operation of the distributed peak control system using the photovoltaic power generation according to the present invention and the operation and effect thereof will be described below.

First, as shown in FIG. 1, in the distributed peak control and emergency power supply dispersion supply system of the present invention, in a normal steady state where peaks are not generated or an emergency state is not generated, the electric power distribution system power of the electric power- It is supplied to each normal load and emergency load.

When a peak occurs or an emergency state occurs in such a state, the photovoltaic power generation system power of the solar photovoltaic power input unit 300 is substituted for the cutoff point for peak control when a peak occurs, and when the emergency state occurs, Any one of the photovoltaic power generation power of the solar power input unit 300 or the emergency power generation system power of the emergency power input unit 200 according to whether or not the power supply of the photovoltaic power generation system is selected by the manager, Can be supplied.

2, the solar light dispersion peak control unit 800 receives data (current and voltage measurement value S1 and power amount S2 (see FIG. 2) of the photovoltaic power generation system from the photovoltaic power input unit 300 (Maximum demanded power amount S4) and the power control value S5 for peak control by the power control monitoring unit 600 and comparison and analysis (S801) (Peak value) of the power generation power supplied from the power distribution system and the power control value for the peak control, and determines the power input / cutoff point for inputting or blocking the power distribution system power and the photovoltaic system power S802).

Next, the solar light dispersion peak control unit 800 supplies the power distribution system power to the determined power input point and selectively supplies the photovoltaic power generation system power to the cutoff point (S803). In the state where such power supply is performed, (S804). If a peak occurs (Yes branch of S804), the process returns to the data comparison and analysis step S801 to repeatedly perform the above operation. When no peak is generated (No branch of S804) (S805) so that the electric power distribution system power of the electric power input unit 100 is normally supplied to each general load and the emergency load in the customer.

3, the photovoltaic dispersion peak control unit 800 controls the photovoltaic generation system power data (current and voltage measurement values S1 and S2) collected from the solar photovoltaic power input unit 300, (S811) of the power generation state value S3 of the emergency power generation system received by the emergency power input unit 200 and confirms whether or not the solar power generation system power is available (S812).

If it is determined in step S812 that the photovoltaic power generation system power is available (Yes branch of S812), the solar photovoltaic distribution peak control unit 800 determines whether or not the power supply of the photovoltaic power generation system is selected by the manager (Step S813). If there is a power supply selection by the administrator ("Yes" branch of S813), the solar power generation system power of the solar power input unit 300 is selected so as to be supplied to a specific point, (Step S814). At this time, as a result of the check of the power supply selection by the manager (S813), when there is no selection of power supply of the solar power generation system by the manager ("No" branch of S813), the solar light dispersion peak control unit 800 receives the emergency power input 200) is supplied to each emergency load in the customer (S816). If it is determined in step S812 that the photovoltaic generation system power is not available ("NO" branch of S812), the emergency generator is activated (S815) to supply emergency power generation system power (S816) (S817). ≪ / RTI >

Finally, the solar light dispersion peak control unit 800 confirms whether or not the emergency state is released (S817) in a state in which selective power supply by administrator selection or power supply by the emergency power generation system power is performed (S817) (YES branch of S817), the routine returns to the data comparison and analysis step (S811) in order to repeat the above-described operation (S817: NO branch) (S818) so that the distributed power supply operation is terminated.

According to the present invention, it is possible to perform stable peak control by modifying the existing simple fixed type peak control method to a level-specific peak control method, and to supply power at a special point in an emergency situation, Therefore, it is possible to obtain a high effect even with the same amount of power since the field adaptation ability is strong and the distributed peak control is enabled by using the photovoltaic power.

In addition, it is possible to selectively supply the photovoltaic power generation system and emergency power generation power according to the need in case of emergency, so that it is possible to efficiently supply electric power to the necessary place and to eliminate the risk factors on the site and secure safety It is possible to maximize the efficiency of energy, maximize adaptive peak control and ensure safety in case of emergency.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Do. Accordingly, it is intended that the scope of the invention be defined solely by the claims appended hereto, and that all equivalent or equivalent variations thereof fall within the scope of the present invention.

100: KEPCO power input unit 200: Emergency power input unit
300: solar power input unit 301: grid-connected solar power generator
302: solar connection module 303: grid-connected solar inverter
400: General power supply 401: Current detector
500: Emergency power supply unit 600: Power control monitoring unit
700: Photovoltaic Power Monitoring Part 800: Photovoltaic Dispersion Peak Fisher
501: Emergency power current detection unit ATS: Power selection unit

Claims (6)

The electric power input unit 100 for receiving electric power of the power distribution system and the emergency electric power input unit 200 for receiving electric power of the emergency power generation system are respectively provided to power the electric power distribution system of the electric power input unit 100, The peak control device of the power supply device supplies power to the emergency load of the emergency power input part (200) in emergency and supplies it to each emergency load in the customer,
A solar power input unit 300 for receiving solar power generation system power generated by the solar power generation apparatus 301;
A general power supply unit 400 connected to each general load in the customer to selectively supply or cut the power supply system power of the electric power input unit 100 to each general load;
The power distribution system of the electric power input unit 100 selected by the sunlight dispersion peak control unit 800 or the emergency power system power of the emergency power input unit 200 is connected to each emergency load in the customer, An emergency power supply unit 500 for supplying the load to the load;
The operation and power amount of the electric power input unit 100 and the emergency power input unit 200 are constantly monitored to calculate the maximum demanded electric power in the customer and whether or not the calculated maximum demand electric power amount exceeds the predetermined target electric power amount, A power control monitoring unit 600 for transmitting a power control value for peak control to the solar monitoring unit 700 when the power amount exceeds the target power amount;
The power control unit 600 monitors the presence or absence of power of the photovoltaic power generation system and the amount of power by measuring the current and voltage of the photovoltaic generation power received by the photovoltaic power input unit 300, A solar photovoltaic generation monitoring unit 700 for receiving photovoltaic power and delivering it to the solar light dispersion peak control unit 800;
A current state value S3 of the emergency system received by the emergency power input unit 200, a current value S3 of the emergency system received by the emergency power input unit 200, A power control value S5 for peak control of the power control monitoring unit 600 is calculated by collecting the power control value S5 from the normal power supply unit 400 and the maximum demanded power amount S4 supplied to each load, And a solar light dispersion peak control unit (800) for controlling the power supply / shutdown operation to each load in the customer to control distribution of the maximum demanded power in the customer and distributing the emergency power supply in a dispersed manner. Distributed peak control and emergency power distribution system using photovoltaic power. 2. The solar power system according to claim 1, wherein the solar power input unit (300)
A grid-connected photovoltaic device (301) composed of a plurality of solar cell modules and generating electric power by solar light;
A photovoltaic connection module 302 for directly or parallelly connecting the direct current power generated by the grid interconnected photovoltaic power generation device 301 and collecting the direct current power into necessary power in the system; And
And a grid-connected solar inverter (303) for converting the solar power generation power collected through the solar cell connection unit (301) to an alternating current and connecting the same to a power grid of a power distribution system. Distributed Peak Control and Emergency Power Distribution System using Power. The apparatus of claim 1, wherein the general power supply (400)
And the operation is automatically controlled by the sunlight dispersion peak control unit 800 to selectively supply or shut off the power distribution system power of the electric power input unit 100 to each general load. Distributed Peak Control and Emergency Power Distribution System using Photovoltaic Power. The apparatus of claim 1, wherein the emergency power supply (500)
An emergency power current sensing unit 501 connected to the emergency power generation system power line of the emergency power input unit 200 to sense the current of the emergency power generation power and transmit the sensed current to the solar light dispersion peak control unit 800;
A movable terminal is connected to an emergency load in the housing and fixed contacts are respectively connected to a power system power line of the electric power input unit 100 and an emergency system electric power line of the emergency power input unit 200 so that the solar light dispersion peak controller unit 800 (ATS) for selecting either the power distribution system power of the electric power input unit 100 or the emergency system power of the emergency power input unit 200 by the switching operation of the movable terminal by the electric power selection unit And a distributed peak control and emergency power supply distribution system using photovoltaic power. The apparatus according to claim 1, wherein the solar light dispersion peak control unit (800)
The current value and the voltage measurement value S1 of the photovoltaic power system power received by the solar power input unit 300 and the power amount S2 and the power generation state value S3 of the emergency system received by the emergency power input unit 200, And the maximum demanded power amount S4 supplied to each load from the general power supply unit 400 are collected and classified according to each mode or level. Supply system. 6. The apparatus according to claim 5, wherein the solar light dispersion peak control unit (800)
The power control value (S5) for peak control of the power control monitoring unit 600 is compared with the data values for each mode or level to adjust the power supply / cutoff operation for each load in the reception by mode or level And a distributed peak control and emergency power supply distribution system using photovoltaic power generation.
KR1020150148520A 2015-08-19 2015-10-26 System for controlling peak and supplying emergency power using distributed photovoltaic power KR101741128B1 (en)

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WO2019052875A1 (en) * 2017-09-12 2019-03-21 Sma Solar Technology Ag Control processing method for inverter device having h5 topological structure
US11451165B2 (en) 2017-09-12 2022-09-20 Sma Solar Technology Ag Control processing method for inverter device having H5 topological structure

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