KR101779997B1 - Smart Renewable Stabilization Packaged System - Google Patents

Smart Renewable Stabilization Packaged System Download PDF

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Publication number
KR101779997B1
KR101779997B1 KR1020120111965A KR20120111965A KR101779997B1 KR 101779997 B1 KR101779997 B1 KR 101779997B1 KR 1020120111965 A KR1020120111965 A KR 1020120111965A KR 20120111965 A KR20120111965 A KR 20120111965A KR 101779997 B1 KR101779997 B1 KR 101779997B1
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KR
South Korea
Prior art keywords
power
system
renewable energy
grid
power supply
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KR1020120111965A
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Korean (ko)
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KR20140046648A (en
Inventor
김수남
최영찬
이덕수
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현대일렉트릭앤에너지시스템(주)
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/60Arrangements for transfer of electric power between AC networks via a high-tension DC link, HVDC transmission

Abstract

The present invention discloses an integrated system for stabilizing output of mobile renewable energy. The present invention provides an output stabilization system of an energy storage device, a power quality compensating device, a power conversion device, and a grid interconnecting device in a mobile structure This system is connected to a new and renewable energy generation system while moving it as needed. Thus, it is possible to stabilize the power input to the power grid, and to increase the efficiency of expansion and maintenance as well as movement and installation of the output stabilization system will be.

Description

{Smart Renewable Stabilization Packaged System}

More particularly, the present invention relates to an output stabilization technology of a smart renewable energy, and more particularly, to an energy stabilization technique of an energy storage device, a grid interconnecting device, and a power quality compensating device in a single structure, And an output stabilization integrated system for mobile renewable energy capable of stabilizing power flowing into a power grid.

Generally, a renewable energy source such as a wind power and a solar power generator is configured such that a single or multiple generators generate electric power by constructing a power generation complex in a specific area, and control the maximum output point for generating such electric power And the electric power produced according to the instantaneous instantaneous wind speed and the solar radiation amount is supplied to the electric power system.

However, there is a disadvantage that it is difficult to control the electric power produced because the conventional renewable energy source utilizes the natural power, and if the applied ratio of the generated electric power is increased, the stability of the electric power system may be adversely affected In the worst case, there is a problem that the power supply must be stopped.

Accordingly, in order to solve the above-mentioned problems, there have been developed devices for stabilizing output by connecting a large capacity energy storage device and a power quality compensation device to a power generation system of a renewable energy source.

However, since most control devices such as mass storage devices and power quality compensation devices are installed in individual structures (e.g., containers) or installed in separate electrical rooms, they can not be moved and installed, And the value of the utilization was extremely limited.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide an output stabilization system for an energy storage device, a power quality compensation device, a power conversion device, It is also important to ensure that the power supplied to the power grid can be stabilized by connecting it to the renewable energy generation system while moving it. And to provide an output stabilization integrated system.

According to an aspect of the present invention, there is provided an integrated output stabilization system for mobile renewable energy, including: an energy storage device for charging / discharging electric power generated by using a renewable energy source; A power quality compensating device connected to the power line of the renewable energy source power generation system and removing harmonics generated when the power generated by using the renewable energy source is charged to the energy storage device; A power conversion device for converting power produced by using a renewable energy source stored in the energy storage device into grid power; A grid coupling device connected to the power line of the KEPCO system and supplying the grid power converted by the power conversion device to the KEPCO power line; And the energy storage device, the power quality compensation device, the power conversion device, and the grid interconnecting device are mounted in the movable structure.

In addition, the movable structure may be divided into first and second space portions separated by a detachable door, an energy storing device is mounted in the first space portion, and a power quality compensating device, a power converting device, And a grid connection device is mounted.

The energy storage device may further include a plurality of battery stacks for charging / discharging electric power produced by using a renewable energy source; A battery management unit for managing a charge / discharge state of power produced by using a renewable energy source charged / discharged in the plurality of battery stacks; A wire breaker for blocking a discharge of the battery stack when an abnormal current is generated due to a discharge of the battery stack; .

The power quality compensating apparatus may further include: a first vacuum circuit breaker for shutting off transmission of a power line when an error or failure occurs in power transmission through a power line of the renewable energy generation system; A power compensation controller for removing harmonics and stabilizing the output voltage of the power supplied from the renewable energy source power generation system through the power line when the first vacuum circuit breaker is not shut off; A second vacuum circuit breaker connected between the first vacuum circuit breaker and the power compensation control unit and interrupting power transmission to the power compensation control unit when an error or failure occurs in power transmission to the power compensation control unit; .

In addition, the power conversion apparatus may further include a system power supply fuel cell that converts power produced using a renewable energy source discharged from the battery stack into system power and supplies the system power to the grid interconnecting apparatus; And a system power supply unit connected between the system power supply fuel cell and the grid interconnecting apparatus for supplying grid power to the grid power supply fuel cell when an error or failure occurs in the grid power supply in the grid power supply fuel cell A third vacuum circuit breaker to shut off; .

The grid interconnecting apparatus may further include: a power supply unit connected to the electric power system electric power line and supplying the grid electric power supplied from the grid electric power supply fuel cell to the electric power system electric power line; And a fourth vacuum circuit breaker connected between the power supply unit and the electric power system power line and interrupting supply of the system power at the electric power supply unit when an error or failure occurs in the system power supply at the electric power supply unit; .

As described above, according to the present invention, an output stabilization system constituting an energy storage device, a power quality compensating device, a power conversion device, and a grid interconnecting device in a mobile structure is constructed and connected to a renewable energy generation system while moving it as needed In addition to this, it can be expected to stabilize the electric power flowing into the power grid, and to increase the efficiency of expansion and maintenance as well as movement and installation.

1 is a schematic block diagram of an integrated system for output stabilization of mobile renewable energy according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a schematic block diagram of an integrated output stabilization system for mobile renewable energy according to an embodiment of the present invention. Referring to FIG.

Referring to FIG. 1, an integrated system for stabilizing output of portable renewable energy according to an embodiment of the present invention includes an energy storage device 10, a power quality compensating device 20, a power conversion device 30, And the linking device 40 is mounted in the container 100 which is a movable structure.

That is, the container 100, which is a movable structure, is divided into the first and second space portions A1 and A2 isolated by the detachable door 101. In the first space portion A1, The apparatus 10 is mounted and the power quality compensating apparatus 20, the power converting apparatus 30 and the grid interconnecting apparatus 40 are mounted on the second space A2. The quality compensating apparatus 20 ) Is connected to the power line of the renewable energy source power generation system, and the grid connection device (40) is connected to the electric power line of the electric power generation system.

Here, the energy storage device 10 is for charging / discharging electric power generated by using a renewable energy source, and includes a plurality of battery stacks for charging / discharging electric power produced by using a renewable energy source, A battery management system (BMS) for managing a charge / discharge state of electric power produced by using a renewable energy source charged / discharged in the battery stacks 11 and 12; And a molded case circuit breaker (MCCB) 14 for blocking the discharge of the battery stacks 11 and 12 when an abnormal current is generated due to the discharge of the battery stacks 11 and 12 .

The power quality compensating device 20 is connected to a power line of a renewable energy source power generation system to control the charge and discharge of the energy storage device 10, A first vacuum circuit breaker (VCB) 21 for shutting off the transmission of the power line when a failure occurs, and a second transmission circuit 21 for transmitting power from the renewable energy source power generation system via the power line (STATCOM) 22 for removing and stabilizing harmonics so that the output voltage of the power source is kept constant, and a second power circuit 22 connected between the first vacuum circuit breaker 21 and the power compensation control unit 22, And a second vacuum circuit breaker (23) for interrupting power transmission to the power compensation control unit (22) when an error or failure occurs in power transmission to the compensation control unit (22).

The power conversion device 30 converts power produced by the renewable energy source stored in the battery stacks 11 and 12 of the energy storage device 10 into grid power, 11) a system power supply fuel cell (PCS: Power Conversion System) 31 for converting the electric power produced by using the renewable energy source discharged in the power plant 12 into the grid electric power and supplying it to the grid connection device 40, The system power supply fuel cell (31) is connected between the system power supply fuel cell (31) and the grid interconnector (40), and when an error or failure occurs in the grid power supply in the system power supply fuel cell And a third vacuum circuit breaker (32) for shutting off the supply of the system power in the fuel cell (31).

The grid interconnection device 40 is connected to a power line of the electric power system and supplies the grid electric power supplied from the grid electric power supply fuel cell 31 of the electric power conversion device 30 to the electric power system electric power line. A power supply unit 41 connected to the electric power supply unit 41 for supplying the grid electric power supplied from the grid electric power supply fuel cell 31 to the electric power system electric power line, And a fourth vacuum circuit breaker (42) for shutting off the supply of the system power in the power supply unit (41) when an error or failure occurs in the system power supply in the power supply unit (41).

That is, the energy storage device 10, the power quality compensating device 20, the power conversion device 30 and the grid interconnecting device 40 are all mounted on the container 100, which is a movable structure, , The power charging and discharging of the energy storage device 10 is controlled, the harmonic waves that may occur in the power inverter 30 are preferentially removed using the power quality compensating device 20, Therefore, the electric power generated for the power generation can be transmitted while moving the container 100, which is a movable structure, according to the renewable energy source produced according to the instantaneous instantaneous changing wind speed and the solar radiation amount. The power system can be stabilized according to the capacity and the utilization of the renewable energy source can be maximized It is.

While the present invention has been described in connection with the accompanying drawings, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is to be understood that such changes and modifications are within the scope of the claims.

10; Energy storage devices 11, 12; Battery stack
13; A battery management unit 14; Wiring breaker
20; A power quality compensation device 21; The first vacuum circuit breaker
22; A power compensation controller 23; The second vacuum breaker
30; Power converter 31; Fuel cell for grid power supply
32; A third vacuum circuit breaker 40; Grid connection device
41; A power supply unit 42; The fourth vacuum circuit breaker
100; A movable structure 101; Detachable door

Claims (6)

  1. An energy storage device for charging / discharging power produced by using a renewable energy source; A power quality compensating device connected to the power line of the renewable energy source power generation system and removing harmonics generated when the power generated by using the renewable energy source is charged to the energy storage device; A power conversion device for converting power produced by using the renewable energy source stored in the energy storage device into grid power while high frequency is removed by the power quality compensation device; A grid coupling device connected to the power line of the KEPCO system and supplying the grid power converted by the power conversion device to the KEPCO power line; Lt; / RTI >
    The energy storage device, the power quality compensating device, the power conversion device, and the grid interconnecting device are mounted in the movable structure so that efficient movement, installation, and expansion are possible.
    The power quality compensating apparatus includes a first vacuum circuit breaker for shutting off transmission of a power line when an error or failure occurs in power transmission through a power line of a renewable energy generation system; A power compensation controller for removing harmonics and stabilizing the output voltage of the power supplied from the renewable energy source power generation system through the power line when the first vacuum circuit breaker is not shut off; And a second vacuum circuit breaker connected between the first vacuum circuit breaker and the power compensation control unit and interrupting power transmission to the power compensation control unit when an error or failure occurs in power transmission to the power compensation control unit. And an output stabilization integrated system for mobile renewable energy.
  2. The apparatus of claim 1, wherein the movable structure is divided into first and second space portions separated by a detachable door, an energy storage device is mounted in the first space portion, A power conversion device and a system linkage device are mounted on the power conversion device.
  3. 3. The apparatus of claim 2,
    A plurality of battery stacks for charging / discharging electric power produced by using a renewable energy source;
    A battery management unit for managing a charge / discharge state of power produced by using a renewable energy source charged / discharged in the plurality of battery stacks; And
    A wire breaker for blocking a discharge of the battery stack when an abnormal current is generated due to a discharge of the battery stack; And an output stabilization integrated system for mobile renewable energy.
  4. delete
  5. The power conversion apparatus according to claim 3,
    A system power supply fuel cell that converts power produced by using a renewable energy source discharged from the battery stack into system power and supplies the system power to the grid interconnecting apparatus; And
    And a system power supply unit connected to the system power supply fuel cell and the grid interconnecting device and configured to shut off the grid power supply in the system power supply fuel cell when an error or failure occurs in the grid power supply in the grid power supply fuel cell A third vacuum circuit breaker; And an output stabilization integrated system for mobile renewable energy.
  6. 6. The system according to claim 5,
    A power supply unit connected to the KEPCO system power line and supplying the system power supplied from the system power supply fuel cell to the KEPCO system power line; And
    A fourth vacuum circuit breaker connected between the power supply unit and the electric power system power line and interrupting supply of the system power at the electric power supply unit when an error or failure occurs in the power supply of the system power at the electric power supply unit; And an output stabilization integrated system for mobile renewable energy.
KR1020120111965A 2012-10-09 2012-10-09 Smart Renewable Stabilization Packaged System KR101779997B1 (en)

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KR1020120111965A KR101779997B1 (en) 2012-10-09 2012-10-09 Smart Renewable Stabilization Packaged System

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KR101779997B1 true KR101779997B1 (en) 2017-09-20

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101098521B1 (en) * 2010-08-27 2011-12-26 현대산업개발 주식회사 Hybrid power supply system
JP2012505629A (en) * 2008-10-07 2012-03-01 プレミアム パワー コーポレイション System and method for transferring energy

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012505629A (en) * 2008-10-07 2012-03-01 プレミアム パワー コーポレイション System and method for transferring energy
KR101098521B1 (en) * 2010-08-27 2011-12-26 현대산업개발 주식회사 Hybrid power supply system

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