KR20190055544A - Energy storage system - Google Patents

Energy storage system Download PDF

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KR20190055544A
KR20190055544A KR1020170152383A KR20170152383A KR20190055544A KR 20190055544 A KR20190055544 A KR 20190055544A KR 1020170152383 A KR1020170152383 A KR 1020170152383A KR 20170152383 A KR20170152383 A KR 20170152383A KR 20190055544 A KR20190055544 A KR 20190055544A
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South Korea
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power
smps
energy storage
primary
container
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KR1020170152383A
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Korean (ko)
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KR102009919B1 (en
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정태훈
최형석
이규영
박근보
김윤호
정경두
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주식회사 티팩토리
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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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/002—Fire prevention, containment or extinguishing specially adapted for particular objects or places for warehouses, storage areas or other installations for storing goods
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073—Shielding materials
    • H05K9/0098—Shielding materials for shielding electrical cables
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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  • Engineering & Computer Science (AREA)
  • Operations Research (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The present invention relates to an energy storage system (ESS) which stores power inputted through an insulation transformer which is connected with a grid in a plurality of batteries and supplies energy stored in the batteries to the grid. A characteristic configuration of the present invention is to install a device having a risk of a fire on a container having a battery installed thereon and a separate container and to doubly install a switching mode power supply (SMPS) on each container, thereby acquiring state control power.

Description

이중 보호용 제어전원을 갖는 에너지 저장장치{ENERGY STORAGE SYSTEM}[0001] ENERGY STORAGE SYSTEM [0002]

본 발명은 일반 전력계통에 연결되는 에너지 저장장치(ESS:Energy Storage System)에 관한 것이다.The present invention relates to an energy storage system (ESS) connected to a general power system.

종래의 전력계통(grid)나 태양광 발전과 연계된 ESS에는 콘테이너 내부에 그리드로터 공급되는 그리드 AC전압을 저압 AC전원으로 변환하기 위한 변압기가 설치되며, 변압기로부터의 저압 AC 전원을 직류전원으로 변환하거나, 연결된 배터리 전원을 교류로 역변환하기 위한 PCS(Power Control System)가 설치되며, PCS으로부터 출력되는 직류전원을 충전하기 위한 배터리와, 배터리를 관리하는 BMS(Battery Management System)가 설치되며, 콘테이너에 유입되는 직격뢰 및 유도뢰에 의한 서지로부터 보호하기 위한 보호시설이 설치되고 있다. 이러한 구성은 본 출원인에 의하여 출원된 특허등록 제10-1760858호(발명의 명칭: 하이브리드 구조의 에너지 저장장치의 감시제어서버)(이하, ‘종래기술’이라 함)도 이러한 ESS 장치를 구현하고 있다.A conventional power grid or ESS associated with solar power generation is provided with a transformer for converting a grid AC voltage supplied to a grid rotor into a container into a low-voltage AC power source, and converting a low-voltage AC power from the transformer into a DC power Or a PCS (Power Control System) for reversely converting the connected battery power into AC, a battery for charging the DC power output from the PCS, and a battery management system (BMS) for managing the battery are installed. Protection facilities are installed to protect against direct surge from incoming inflow and surge caused by induction lightning. Such a configuration also implements such an ESS apparatus (hereinafter, referred to as a "prior art") as a patent registration No. 10-1760858 filed by the present applicant (the name of the invention: a monitoring control server of an energy storage device of a hybrid structure) .

도 1은 종래기술을 설명하기 위한 구성도이다. 1 is a block diagram for explaining a conventional technique.

종래기술의 전력계통 연계형 에너지 저장장치(1)는 일반 전력계통인 그리드(2)와, 풍력발전소(3) 및 태양광 발전소(4)의 신재생 에너지원들과 연계되어 에너지를 저장하고, 저장된 에너지를 방전시킨다. The power grid connected energy storage device 1 of the related art stores energy in cooperation with a grid 2 as a general power system, a renewable energy source of a wind power generation plant 3 and a solar power generation plant 4, The stored energy is discharged.

또한 에너지 저장장치(1)에는 전력계통으로부터 배터리 에너지 저장장치부(30)에 전기를 공급하거나, 전기를 방전시키기 위하여 AC에서 DC로 변환시키거나, DC에서 AC로 변환시키기 위하여 변환장치(12)와 제어기(11)로 구성되는 전력변환장치부(PCS)(10)가 설치되고, 배터리에너지 저장장치부(30)에 전기를 충전시키거나 방전시키기 위하여 DC 전원을 제어하는 DC 패널(21)과, 함체 내부의 AC부하들에 AC를 전원 공급을 제어하는 하는 AC 패널(22)과, 각각의 장치들을 감시하고, 각 장치들의 상태를 외부로 전송하는 감시제어서버(23)로 이루어지는 서버 및 배전 패널부(20)가 설치되고, 복수개의 배터리들의 집합체와 배터리 관리장치(BMS)들로 이루어진 배터리에너지저장장치모듈(31), (32)들로 이루어진 배터리에너지저장장치부(30)가 설치된다. The energy storage device 1 is also provided with an inverter 12 for supplying electricity from the power system to the battery energy storage unit 30 or for converting AC to DC for discharging electricity or DC to AC, And a controller 11. The DC power source unit 10 includes a DC panel 21 for controlling the DC power source to charge or discharge electricity to the battery energy storage unit 30, An AC panel 22 for controlling the AC power supply to the AC loads inside the enclosure, and a supervisory control server 23 for monitoring the respective devices and transmitting the states of the respective devices to the outside. A battery energy storage unit 30 including battery energy storage device modules 31 and 32 including a plurality of batteries and battery management devices (BMS) is installed .

또한 에너지 저장장치(1)에 설치되는 다양한 시설물들은 접지되고, 차폐된 함체 내부에 설치되며, 함체 내부에 설치된 각 시설물의 인입부에는 이상상태를 감지하기 위한 서지보호기(Surge Protector Device) SPD1 내지 SPD8이 설치된다. In addition, various facilities installed in the energy storage device 1 are grounded and installed inside a shielded enclosure, and surge protector devices SPD1 to SPD8 Respectively.

이러한 종래기술에서는 그리드로부터 계통전압이 절연 변압기를 거쳐 SMPS와, PCS로 분기되게 되며, SMPS는 DC는 후속단에서 사용되는 제어전원을 출력하게 되고, PCS는 계통전압을 직류전압으로 변환하여 배터리에 충전하도록 한다. 또한 PCS는 배터리 전원을 방전시에는 직류를 교류로 역 24V와 12V의 출력전압을 으로 후속되는 제어장치들의 제어전원으로 입력되게 된다. In this conventional technique, the grid voltage is branched from the grid via the isolation transformer to the SMPS and the PCS. In the SMPS, the DC outputs the control power used in the subsequent stage. The PCS converts the grid voltage into a DC voltage, Charge it. In addition, when the battery power is discharged, the PCS is inputted to the control power of the following control devices with the DC 24 V and the output voltage of 12 V by alternating current.

또한 종래기술에서 절연변압기는 380V 1:1 △-Y 결선으로 이루어지기 때문에 1차측으로 유입되는 서지전압이 2차측으로 유입되는 것이 방지된다고는 하지만 2차측에 잔상전압이 발생되고, 이 잔상전압이 SMPS에 영향을 미치게 되며,SMPS는 잔상전압의 영향으로 정확한 제어전압을 출력시키지 못하게 되며, 이와 같은 이유로 SMPS로부터 제어전원을 인가받아 동작되는 제어장치들이 오동작을 발생시키게 된다. In addition, since the isolation transformer in the prior art is composed of 380V 1: 1? -Y connection, the surge voltage introduced into the primary side is prevented from flowing into the secondary side, but a residual voltage is generated at the secondary side, The SMPS will not output the correct control voltage due to the residual voltage due to the residual voltage. For this reason, the control devices operated by receiving the control power from the SMPS cause malfunctions.

또한 종래기술에서는 배터리가 수납되는 콘테이너 내부에 직격뢰, 유도뢰 등의 유입으로 고장 빈도가 매우 높은 변압기와, 변압기로부터 전원을 인가받아 동작되는 장치들이 함께 설치되기 때문에 변압기에 화재가 발생되어 소방설비가 작동되는 경우에 변압기뿐만 아니라 콘테이너 내부의 모든 전기설비에 영향을 미치기 때문에 커다란 손실을 발생시킨다.In addition, in the prior art, since a transformer having a high frequency of failure due to the introduction of a direct current or induction load into the container in which the battery is housed is installed together with devices operated with power from the transformer, a fire is generated in the transformer, A large loss is caused because it affects not only the transformer but also all electric equipments inside the container.

본 발명은 종래기술의 이러한 문제점을 감안하여 안출된 것으로, 본 발명의 해결과제는 그리드(grid)에 연결된 변압기 및 변압기와 연결된 1차 SMPS(Switching Mode Power Supply)를 ESS(Energy Storage System)의 콘테이너와 분리배치시킴으로써 사고빈도가 높은 변압기로부터 ESS 설비를 보호하도록 하고, 변압기로부터 발생되는 잔상전압을 최소화시키기 위하여 ESS 내부에 2차 SMPS를 설치하여 1차 SMPS로부터 유입되는 제어전원을 재차 안정화시킴으로써 보다 정밀하고 안정된 제어전원을 확보할 수 있도록 함으로써 ESS가 정밀제어되도록 하기 위한 것이다. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a transformer connected to a grid and a primary SMPS (Switching Mode Power Supply) connected to a transformer, To protect the ESS equipment from the faulty transformer and to minimize the residual voltage generated from the transformer. Secondary SMPS is installed inside the ESS to stabilize the control power coming from the primary SMPS again, So that the ESS can be precisely controlled.

상기 과제를 해결하기 위한 해결수단은 그리드(grid)와 연결된 절연변압기를 통하여 입력된 전력을 복수개의 배터리들에 저장하고, 상기 배터리들에 저장된 에너지를 그리드에 공급하는 에너지 저장장치(ESS: Energy Storage System)에 있어서: 상기 절연변압기의 출력을 입력받아 DC의 제어전원을 출력하는 1차 SMPS가 수납되는 1차 콘테이너; 상기 절연변압기의 출력을 입력받아 상기 배터리들을 충전시키는 DC 전원으로 변환하거나, 상기 배터리들에 저장된 전원을 AC 전원으로 변환하여 상기 변압기로 공급하는 PCS(Power Control System)와, 상기 1차 SMPS로부터 입력된 전원 안정화시켜 DC 제어전원으로 출력시키는 2차 SMPS와, 상기 2차 SMPS로부터 공급되는 전원에 의하여 상기 배터리들의 충방전을 제어하는 BMS(Battery Managing System)가 수납되는 2차 콘테이너를 포함하는 것이다.According to an aspect of the present invention, there is provided an energy storage system including an energy storage device (ESS) for storing power inputted through an isolation transformer connected to a grid in a plurality of batteries and supplying energy stored in the batteries to a grid, A primary container in which a primary SMPS receiving an output of the isolation transformer and outputting a control power of the DC is received; A power control system (PCS) for receiving an output of the isolation transformer and converting the power into DC power for charging the batteries, converting the power stored in the batteries into AC power and supplying the AC power to the transformer, And a secondary container in which a battery managing system (BMS) for controlling charging / discharging of the batteries by a power source supplied from the secondary SMPS is housed.

또한 본 발명에서 상기 1차 SMPS와 상기 2차 SMPS는 차폐케이블로 연결되는 것이 바람직하다. In the present invention, it is preferable that the primary SMPS and the secondary SMPS are connected by a shielded cable.

또한 본 발명에서 상기 절연변압기는 상기 1차 컨테이너에 수납되는 것이 바람직하다. In the present invention, it is preferable that the insulation transformer is housed in the primary container.

또한 본 발명에서 상기 1차 콘테이너에는 소방설비가 설치되고, 상기 1차 콘테이너 내부에 화재가 발생될 때 상기 소방설비가 동작되는 것이 바람직하다.In the present invention, it is preferable that the primary container is provided with a fire-fighting facility and the fire-fighting facility is operated when a fire occurs in the primary container.

상기 과제와 해결수단을 갖는 본 발명에 따르면, 화재가 다른 부품들에 비하여 빈번하게 발생되는 변압기를 별도의 콘테이너에 설치함으로써 다른 부품들에 파급되는 손상을 미연에 방지할 수 있으며, 1차 SMPS에서 서지에 의한 이상전압을 1차적으로 감소시키고, 2차 SMPS에서 이상전압을 2차적으로 감소시킴으로써 보다 안정적인 제어전원을 획득할 수 있다. According to the present invention having the above-mentioned problems and solutions, it is possible to prevent the damage to other components from occurring by installing a transformer, which is frequently generated in comparison with other parts of a fire, in a separate container, It is possible to obtain a more stable control power by firstly reducing the abnormal voltage due to the surge and secondarily reducing the abnormal voltage in the secondary SMPS.

도 1은 종래기술을 설명하기 위한 구성도이다.
도 2는 본 발명의 일실시예를 설명하기 위한 블록도이다.
도 3은 본 발명의 구체적인 회로도이다.1 is a block diagram for explaining a conventional technique.
2 is a block diagram for explaining an embodiment of the present invention.
3 is a specific circuit diagram of the present invention.

이하, 첨부된 도면에 따라서 본 발명의 실시예를 상세하게 설명하기로 한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명의 일실시예를 설명하기 위한 블록도이다. 2 is a block diagram for explaining an embodiment of the present invention.

본 발명의 ESS 장치는 변압기(101)와, 변압기(101)로부터 교류전압을 입력받아 직류를 출력하는 1차 SMPS(102)와, 미도시된 소방설비 및 차단기 및 SPD 등의 보호설비가 설치되는 1차 콘테이너(100)가 설치된다. The ESS device of the present invention includes a transformer 101, a primary SMPS 102 that receives an AC voltage from the transformer 101 and outputs a DC voltage, and a protection device such as an unillustrated fire fighting device, a breaker, and an SPD A primary container 100 is installed.

또한 본 발명의 ESS 장치는 1차 SMPS(102)로부터의 출력되는 1차 DC 전압을 입력받아 더욱 안정화된 2차 DC 제어전원으로 변환하는 2차 SMPS(201)와, 변압기(101)로부터 전원을 입력받아 DC 전원으로 변환하거나, DC 전원을 AC 전원으로 변환하여 변압기에 공급하는 PCS(Power Control System)(202)와, PCS(202)와 연결되어 충방전이 이루어지는 배터리(204)와, 배터리(204)의 충방전을 제어하는 BMS(Battery Managing System)(203)와, 패널 PC인 HMI(205)가 설치되는 제2 콘테이너(200)로 이루어진다. In addition, the ESS device of the present invention includes a secondary SMPS 201 for receiving a primary DC voltage output from the primary SMPS 102 and converting the received primary DC voltage into a more stable secondary DC control power, A PCS (Power Control System) 202 that receives input and converts the DC power into an AC power and supplies the DC power to a transformer, a battery 204 that is connected to the PCS 202 to charge and discharge, A battery management system (BMS) 203 for controlling the charge and discharge of the HMI 204, and a second container 200 for installing the HMI 205 as the panel PC.

이때, 2차 SMPS(201)로부터 출력되는 전원은 BMS(203)와 HMI(205)에 공급되게 된다. At this time, the power output from the secondary SMPS 201 is supplied to the BMS 203 and the HMI 205.

또한 1차 콘테이너(100)와 2차 콘테이너(200)의 내부에는 미도시된 소방설비들이 설치되어 있으며, 소방설비들은 화재가 발생될 때에 이를 감지하여 소화액을 자동분사함으로써 화재를 진압하게 된다. In addition, fire fighting equipment (not shown) is installed inside the primary container 100 and the secondary container 200. The fire fighting equipment detects fire when it is generated and automatically extinguishes the fire by automatically spraying the fire extinguishing liquid.

또한 1차 SMPS(102)는 1차 콘테이너(100)에 설치되고, 2차 SMPS(201)는 2차 콘테이너(200) 내에 설치되고, 이들 1차 SMPS(102)와 2차 SMPS(201)를 연결하는 전선 케이블은 콘테이너 외부를 거쳐서 연결되어야 하기 때문에 유도 서어지등에 의하여 서어지가 유도되지 않도록 외면이 차폐재로 감싸진 차폐케이블(103)인 것이 바람직하다. The primary SMPS 102 is installed in the primary container 100 and the secondary SMPS 201 is installed in the secondary container 200. The primary SMPS 102 and the secondary SMPS 201 Since the connecting cable to be connected must be connected through the outside of the container, it is preferable that the shielding cable 103 is wrapped with the shielding material so that the surge is not guided by the induction sheath.

SMPS는 입력된 전압을 스위칭 모드에 따라서 변환하여 출력시키는 IC칩으로 칩 내부에는 과동상태를 방지하기 위한 회로 또는 소프트웨어가 설치되어 입력되는 전압의 노이즈 성분 및 이상상태를 감소 및 제거시키도록 설계된다. The SMPS is an IC chip that converts an input voltage according to a switching mode and outputs the converted voltage. A circuit or software is installed in the chip to prevent the over-current state, and the noise component and the abnormal state of the input voltage are reduced or eliminated.

변압기(101)는 절연변압기로 △-Y 또는 Y-Y 결선을 이루는 3상 4선식으로 이루어지고, 특히 2차측은 Y결선을 이루며 1차측으로부터 서지가 유입될 때에 중성선에 잔상전압이 높게 유기되고, 이 잔상전압은 1차 SMPS(102)의 과도상태 방지회로에 의하여 잔상전압에 의한 영향을 감소시킨다고는 하지만 정상출력값의 범위를 벗어나는 이상전압을 출력할 수 있다. The transformer 101 is a three-phase four-wire type that forms an? -Y or YY connection with an insulation transformer. Particularly, the secondary side forms a Y wiring, and when a surge flows from the primary side, It is possible to output an abnormal voltage which is out of the range of the normal output value although it is said to reduce the influence of the residual image voltage by the transient state prevention circuit of the primary SMPS 102. [

그러나 1차 SMPS(102)는 차폐케이블로 2차 콘테이너(200)의 2차 SMPS(201)과 연결되어 있고, 1차 SMPS(102)에서 이상전압이 2차 SMPS(201)에 입력될 때는 입력된 이상전압의 피크값을 감소시켜 정상전압으로 변환시켜 결국 2차 SMPS(201)에서는 정상전압이 출력된다. However, when the primary SMPS 102 is connected to the secondary SMPS 201 of the secondary container 200 by a shielded cable and an abnormal voltage is input to the secondary SMPS 201, The peak value of the abnormal voltage is reduced and converted to a normal voltage so that a normal voltage is output in the secondary SMPS 201. [

도 3은 본 발명의 구체적인 회로도이다. 3 is a specific circuit diagram of the present invention.

1차 콘테이너(100)의 내부에 설치되는 변압기(101)는 3상 4선식 380V 절연변압기로 △-Y 결선을 이루고, 입력측은 AISS (Air insulated section switch)(자동구간개폐기)를 거쳐서 한전라인인 그리드에 연결되는 한편, ACB(기중차단기) 및 SPD(서지보호기)를 거쳐 접지된다. 도 3에서 변압기는 △-Y 결선으로 도시되어 있으나, Y-Y 결선으로 구성될 수도 있다. The transformer 101 installed in the primary container 100 is a three-phase four-wire type 380V isolation transformer, and the input side is connected to an input side through an AISS (air insulated section switch) It is connected to the grid while it is grounded through ACB (Air Circuit Breaker) and SPD (Surge Protector). In Fig. 3, the transformer is shown as? -Y connection, but it may be composed of Y-Y connection.

또한 변압기(101)의 2차측의 출력은 ACB를 거쳐 1차 SMPS(102)에 입력되게 되는 한편, 포화리액터를 거쳐서 PCS(202)에 입력되게 된다. Also, the output of the secondary side of the transformer 101 is input to the primary SMPS 102 via the ACB, while being input to the PCS 202 via the saturated reactor.

도 2, 3에서 PCS(202)는 2차 콘테이너(200)에 설치되는 것으로 도시하고 있으나, 이에 국한되지 않고, 변압기(101)의 화재가 배터리들에 연결되지 않도록 변압기와 배터리가 분리된 콘테이너에 설치되는 것이다. 2 and 3, the PCS 202 is installed in the secondary container 200. However, the present invention is not limited thereto, and the PCS 202 may be installed in a container in which a transformer and a battery are separated from each other so that a fire of the transformer 101 is not connected to the batteries. Is installed.

1차 SMPS(102)의 출력은 DC 12V 또는 24V이고, 차폐된 케이블(103)로 연결된 2차 SMPS(201)로 입력된다. 2차 SMPS(201)의 출력은 1차 SMPS(102)과 마찬가지의 레벨의 DC 출력을 갖지만 1차 SMPS(102)에서 한번 서지전압이 감소된 것을 재차 감소시켜 이중적으로 감소시키기 때문에 보다 안정적인 전압을 후속되는 BMS(203)에 공급하게 된다. The output of the primary SMPS 102 is DC 12V or 24V and is input to a secondary SMPS 201 connected by a shielded cable 103. The output of the secondary SMPS 201 has the same level of DC output as that of the primary SMPS 102. However, since the primary SMPS 102 reduces the surge voltage once again to reduce it twice, And supplies it to the subsequent BMS 203.

또한 PCS(202)에서 출력된 직류전압은 LBS(기중절연부하 개폐기)와, MCCB, 마그네틱 스위치, 홀 센서, 퓨즈를 거쳐 배터리들에 전원을 충전시키도록 한다. 이때 MCCB의 후단은 마그네틱 스위치와 연결될 뿐만 아니라 ACB와 SPD를 거쳐서 접지와 연결됨으로써 서지전압을 방류시킨다.In addition, the DC voltage output from the PCS 202 charges the batteries through an LBS (load insulated load switch), an MCCB, a magnetic switch, a hall sensor, and a fuse. At this time, the rear end of the MCCB is connected not only to the magnetic switch but also to the ground through the ACB and the SPD, thereby discharging the surge voltage.

100: 1차 콘테이너
101: 변압기
102: 1차 SMPS
103: 차폐 케이블
200: 2차 콘테이너
201: 2차 SMPS
202: PCS
203: BMS
204: 배터리100: Primary container
101: Transformer
102: Primary SMPS
103: Shielded cable
200: Secondary container
201: Secondary SMPS
202: PCS
203: BMS
204: Battery

Claims (4)

그리드(grid)와 연결된 절연변압기를 통하여 입력된 전력을 복수개의 배터리들에 저장하고, 상기 배터리들에 저장된 에너지를 그리드에 공급하는 에너지 저장장치(ESS: Energy Storage System)에 있어서:
상기 절연변압기의 출력을 입력받아 DC의 제어전원을 출력하는 1차 SMPS가 수납되는 1차 콘테이너;
상기 절연변압기의 출력을 입력받아 상기 배터리들을 충전시키는 DC 전원으로 변환하거나, 상기 배터리들에 저장된 전원을 AC 전원으로 변환하여 상기 변압기로 공급하는 PCS(Power Control System)와, 상기 1차 SMPS로부터 입력된 전원 안정화시켜 DC 제어전원으로 출력시키는 2차 SMPS와, 상기 2차 SMPS로부터 공급되는 전원에 의하여 상기 배터리들의 충방전을 제어하는 BMS(Battery Managing System)가 수납되는 2차 콘테이너를 포함하는 것을 특징으로 하는 에너지 저장장치. An energy storage system (ESS) for storing power input through an isolation transformer connected to a grid in a plurality of batteries and supplying energy stored in the batteries to a grid, the energy storage system comprising:
A primary container in which a primary SMPS receiving an output of the isolation transformer and outputting a control power of the DC is received;
A power control system (PCS) for receiving an output of the isolation transformer and converting the power into DC power for charging the batteries, converting the power stored in the batteries into AC power and supplying the AC power to the transformer, And a secondary container in which a battery managing system (BMS) for controlling charging and discharging of the batteries by a power source supplied from the secondary SMPS is housed. . 청구항 1에 있어서, 상기 1차 SMPS와 상기 2차 SMPS는 차폐케이블로 연결되는 것을 특징으로 하는 에너지 저장장치. The energy storage device of claim 1, wherein the primary SMPS and the secondary SMPS are connected by a shielded cable. 청구항 1에 있어서, 상기 절연변압기는 상기 1차 컨테이너에 수납되는 것을 특징으로 하는 에너지 저장장치. The energy storage device of claim 1, wherein the isolation transformer is housed in the primary container. 청구항 1에 있어서, 상기 1차 콘테이너에는 소방설비가 설치되고, 상기 1차 콘테이너 내부에 화재가 발생될 때 상기 소방설비가 동작되는 것을 특징으로 하는 에너지 저장장치.The energy storage device of claim 1, wherein the primary container is provided with a fire protection facility, and the fire protection facility is operated when a fire occurs in the primary container.
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KR101760858B1 (en) * 2015-06-30 2017-07-24 주식회사 티팩토리 unusual condition monitering apparatus for energy storagy system of hybrid architecture

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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