KR20080044676A - System for supply the source of electricity using the direct-current converter - Google Patents

System for supply the source of electricity using the direct-current converter Download PDF

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Publication number
KR20080044676A
KR20080044676A KR1020060113998A KR20060113998A KR20080044676A KR 20080044676 A KR20080044676 A KR 20080044676A KR 1020060113998 A KR1020060113998 A KR 1020060113998A KR 20060113998 A KR20060113998 A KR 20060113998A KR 20080044676 A KR20080044676 A KR 20080044676A
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South Korea
Prior art keywords
power
rectifier
power supply
direct
converter
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KR1020060113998A
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Korean (ko)
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홍준희
목형수
손성용
주재훈
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삼성물산 주식회사
손성용
홍준희
목형수
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Priority to KR1020060113998A priority Critical patent/KR20080044676A/en
Publication of KR20080044676A publication Critical patent/KR20080044676A/en

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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
    • H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
    • 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
    • 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
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • 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
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/10—The network having a local or delimited stationary reach
    • H02J2310/12—The local stationary network supplying a household or a building
    • 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
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/242—Home appliances

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

A system for supplying power using a direct-current converter is provided to reduce a volume of a device without incorporating a rectifier into the device and to simplify a wiring without requiring the use of adapter. A system for supplying power using a direct-current converter includes an AC/DC rectifying device(100). The AC/DC rectifying device is installed between power distribution systems of alternative power supplied from a power plant. The DC power rectified from the AC/DC rectifying device is directly connected to DC current load by being supplied to a distribution network in a required unit.

Description

직류컨버터를 이용한 전원공급 시스템{SYSTEM FOR SUPPLY THE SOURCE OF ELECTRICITY USING THE DIRECT-CURRENT CONVERTER}Power supply system using DC converter {SYSTEM FOR SUPPLY THE SOURCE OF ELECTRICITY USING THE DIRECT-CURRENT CONVERTER}

도 1은 종래의 교류 배전계통을 도시한 도면,1 is a view showing a conventional AC distribution system,

도 2는 본 발명의 직류컨버터를 이용한 전원공급 시스템의 실시예에 따른 전체 구성도.2 is an overall configuration diagram according to an embodiment of a power supply system using a DC converter of the present invention.

*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

100 : 정류기 200 : 분산형 전원100: rectifier 200: distributed power

본 발명은 교류의 전력공급방식에서 직류컨버터를 이용하여 직류전력공급방식으로 전환하는 직류컨버터를 이용한 전원공급 시스템에 관한 것이다. The present invention relates to a power supply system using a DC converter to switch from the AC power supply method to the DC power supply method using a DC converter.

정보기술이 발전하여 널리 보급됨에 따라 그 에너지원인 전력에 대해서도 이전보다 더 높은 품질, 높은 신뢰도, 높은 효율이 요청되기 시작했다.As information technology has been developed and widely used, higher quality, higher reliability, and higher efficiency have started to be demanded for its energy source power.

IT화에 따라 운송수요가 줄어들고 사회 시스템의 최적화와 소프트화에 의해 에너지 소비가 줄어들어 사회의 에너지 수요가 감소할 것을 예측할 수 있으나 한편으로는 IT 시스템 자체의 사용 에너지 증가나 경제성장이나 국민 생활의 질적 향상에 따라 에너지소비가 가속화되는 것도 짐작할 수 있다. It is predicted that the demand for transportation will decrease with the development of IT and the energy demand of society will decrease due to the optimization and softening of the social system. However, the energy demand of the IT system itself will increase, the economic growth or the quality of people's life will be improved. As a result, energy consumption may be accelerated.

이러한 IT 시스템에 있어서 서버 등 IT기기의 입력전력은 모두 교류라고 하더라도 그 내부에서는 AC-DC변환을 하여 CPU는 직류로 작동하고 있다. In such an IT system, even though the input power of an IT device such as a server is all alternating current, the CPU operates by direct current by converting AC-DC inside thereof.

그런데 기기에 직류를 공급하면 전력변환단수가 줄어들게 되어 효율이 높아지고, 시스템 구성이 간소화 되어 신뢰도가 높아진다.However, supplying direct current to equipment reduces the number of power conversion stages, increasing efficiency, and simplifying the system configuration to increase reliability.

이러한 직류를 사용하는 IT 기기는 통신용이나 대규모 데이터 센터용을 중심으로 이루어지고 있다. 특히 xDSL, FWA나 VoIP 관련 기기는 거의 대부분 직류를 사용한다. 또한 중심 라우터에 대해서도 백본용 제품 시장의 리더인 시스코(Cisco)사는 직류를 사용하는 모델을 표준화시켰고, Juniper Network사는 직류 제품을 전면적으로 내세우고 있어서 교류 입력이 옵션 취급을 받고 있다. 서버 부분은 IBM, Sun, HP 등 각사가 하이엔드용을 직류 사용 모델을 발표했다. IT devices that use such direct current are mainly used for communication and large data centers. In particular, xDSL, FWA or VoIP-related devices use almost all direct current. For backbone routers, Cisco, the market leader in backbone products, has standardized the use of direct current models, and Juniper Networks has a full line of direct-current products, making AC inputs an option. In the server part, companies such as IBM, Sun, and HP announced a high-end DC-using model.

직류 출력 전원은 지역 내 계통 시스템으로 연계 운전될 때 교류 출력 전원보다는 제어하기 쉽다는 장점을 지니고 있다.The DC output power has the advantage of being easier to control than the AC output power when connected to the local grid system.

이렇듯 정보화가 이루어짐에 따라 전력소비량이 크게 증가한다고 예측되어 이전보다 효율적인 전력공급방식을 필요로 하게 되었다.As information is made, power consumption is predicted to increase greatly, which requires more efficient power supply than before.

그러나 현재의 전력공급방식은 도 1에서 보는 바와 같이 교류방식이며 댁내에 공급되는 이러한 교류전력을 입력받기 위해 교류를 직류로 변환하고 직류회로에 축전지 등의 백업전원을 설치해 충전 후 다시 교류로 변환하고, 정보기기 측에서 48V 등의 직류로 변환하여 공급하는 무정전급전의 구성이 쓰이고 있다. However, the current power supply method is an AC method as shown in FIG. 1 and converts AC into DC to receive such AC power supplied to the home, installs a backup power source such as a battery in a DC circuit, and then converts it into AC again. In addition, the uninterruptible power supply that converts and supplies 48V such as DC from the information equipment side is used.

그러나 이러한 구성에서의 전력 손실은 20%정도에 달하고 있어 그 손해가 막대하다 할 것이다. However, the power loss in this configuration is about 20%, and the damage will be enormous.

뿐만 아니라 이러한 교류/직류변환장치가 기기 내부에 장착되면서 가전제품들의 부피가 증가하게 되며, 아답터의 사용으로 인해 배선이 복잡하게 되며, 아답터의 변환효율도 60~70% 정도밖에 되지 않으므로 전력의 낭비를 초래하게 되는 것이다. In addition, as the AC / DC converter is installed inside the device, the volume of home appliances increases, and the wiring becomes complicated due to the use of the adapter, and the conversion efficiency of the adapter is only about 60 to 70%, which wastes power. Will result in.

따라서 늘어나는 직류전원의 수요를 충당할 수 있는 새로운 직류전워 공급 시스템의 개발이 요구되는 실장이다. Therefore, it is required to develop a new DC power supply system that can meet the increasing demand for DC power.

따라서 상기와 같은 문제점을 해결하기 위한 본 발명의 목적은 직류부하에 공급되는 교류전원을 직류전원으로 변환하여 직접 직류부하에 공급함에 따라 직류/교류 또는 교류/직류의 변환에 동반되는 손실을 절감하기 위한 직류컨버터를 이용한 전원공급 시스템을 제공하기 위함이다.Therefore, an object of the present invention for solving the above problems is to convert the AC power supplied to the DC load into a DC power supply directly to the DC load to reduce the loss accompanying the conversion of DC / AC or AC / DC This is to provide a power supply system using a DC converter.

앞서 설명한 바와 같은 목적은 발전소로부터 공급되는 교류전원의 배전계통 사이에 AC/DC 정류기(100)가 더 포함되어 있어, 상기 AC/DC 정류기(100)로 정류 된 직류전원이 필요 단위의 배선망에 공급되어 직접 직류부하와 연결되는 것을 특징으로 하는 세대별 직류컨버터를 이용한 전원공급 시스템에 의해 달성된다.As described above, an AC / DC rectifier 100 is further included between distribution systems of AC power supplied from a power plant, so that the DC power rectified by the AC / DC rectifier 100 is connected to a wiring network of a required unit. It is achieved by a power supply system using a generational DC converter characterized in that the supply is directly connected to the DC load.

또한 본 발명에 의하면, 상기 AC/DC 정류기(100)는 댁내의 직류부하들의 전원을 공급하기 위해 각 세대의 분전반으로 공급되도록 설치되는 것이 바람직하다.In addition, according to the present invention, the AC / DC rectifier 100 is preferably installed to be supplied to the distribution panel of each generation in order to supply the power of the DC load in the home.

또한 본 발명에 의하면, 상기 AC/DC 정류기(100)가 전원을 공급하는 필요단위의 배선망은 건물 전체, 건물 단지, 지역 망 중 어느 하나인 것이 바람직하다.In addition, according to the present invention, it is preferable that the wiring network of the required unit for supplying power to the AC / DC rectifier 100 is any one of the entire building, the building complex, and the local network.

이하 첨부도면을 참조하여 본 발명의 바람직한 실시예를 상세히 설명하도록 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2에서 보는 바와 같이, 본 시스템의 직류컨버터를 이용한 전원공급 시스템은 AC전력 시스템처럼 변전소의 변압기와, 개폐기, 급전선들과 부하들이 연결된 것까지 동일하다. As shown in Figure 2, the power supply system using a DC converter of the present system is the same as the transformer, switchgear, feeder lines and loads of the substation like the AC power system.

이 경우 다른 점은 전체 시스템을 위한 정류기(100)가 요구된다. In this case, the difference is that the rectifier 100 for the whole system is required.

상기 정류기는 발전소에서 생산되는 교류전력을 직류전력으로 변환하게 된다. The rectifier converts the AC power produced in the power plant into DC power.

상기 정류기(100)는 변전소의 내부 혹은 외부에 설치되어 있어, 상기 변전소로부터 송출되는 전력을 교류에서 직류로 전환하여 독립(가 세대별) 혹은 필요로 하는 단위의 배선 망(건물 혹은 건물단지 혹은 지역단위)의 분전반에 공급된다. The rectifier 100 is installed inside or outside the substation, and converts the electric power transmitted from the substation from AC to DC so as to be independent (by households) or to a required wiring network (building or building complex or region). Unit).

또한, 상기 변환된 직류전력은 DC/DC 컨버터를 통해 직접 직류부하와 연결되도록 한다. In addition, the converted DC power is to be directly connected to the DC load through the DC / DC converter.

도면에서 보는 바와 같이, 상기 직류부하는 컴퓨터, 전화기, 모니터, 노트북 등의 컴퓨터 기기들이 해당된다. As shown in the figure, the direct current load is a computer device such as a computer, a telephone, a monitor, a notebook.

도 3에서 보는 바와 같이, 발전소에서 생산되는 교류전원 중 정류기를 거친 직류전원과 정류기를 거치지 않은 교류전원은 전원은 댁내, 오피스 혹은 건물에 설치되어 있는 UPS(교류 무정전 시스템)를 통해 부하에 공급되며, 상기 UPS에 저장되어 있다가 정전 시에 공급되기도 한다.As shown in Figure 3, of the AC power produced in the power plant through the rectifier DC power and AC power not passed through the rectifier power is supplied to the load through the UPS (AC) installed in the home, office or building The power supply may be stored in the UPS and then supplied during a power failure.

정류기를 거친 직류전원은 분전반을 통해 댁내의 직류부하에 연결되므로 교류/직류 컨버터의 연결 없이 직접 직류부하에 연결되며, 상기 교류전원은 댁내의 교류부하에 연결되게 된다. Since the direct current power supply through the rectifier is connected to the direct current load in the home through the distribution panel, the direct current load is connected directly without the connection of the AC / DC converter, and the AC power is connected to the AC load in the home.

또한 태양광 발전과 같은 분산형 전원(200)을 가동시켜 상기 분산형 전원(200)으로부터 직류전원을 공급받기도 한다.In addition, by operating a distributed power supply 200 such as photovoltaic power generation may be supplied with a DC power supply from the distributed power supply 200.

상기 분산형 전원(200)은 태양광 발전, 풍력 발전, 폐기물 발전 등 신 재생 에너지 발전 시스템이거나 연료전지, 소형 가스 터빈 등 열과 전기를 함께 공급할 수 있는 고효율 발전 시스템이다.The decentralized power source 200 is a renewable energy generation system such as solar power generation, wind power generation, waste generation, or a high efficiency power generation system that can supply heat and electricity, such as a fuel cell and a small gas turbine.

이때 분산형 전원(200)은 DC/DC컨디셔너를 일측에 연결하고 있어, 분산형전원 중에서도 태양광발전과 연료전지, 대용량 축전설비 등과 같이 직류 출력전압이 600 ~ 800V 정도인 것들과 입력전압이 48 ~ 200V인 인터넷데이터센터 등의 전압이 다른 부하 등은 상기 DC/DC 컨디셔너를 이용해 22,900V의 직류배전선에 접속되도록 한다. At this time, the distributed power supply 200 connects a DC / DC conditioner to one side. Among the distributed power supplies, those having a DC output voltage of 600 to 800V and input voltages such as photovoltaic power generation, fuel cells, and large capacity power storage facilities are 48 Loads with different voltages, such as Internet data centers of ~ 200V, are connected to a DC distribution line of 22,900V using the DC / DC conditioner.

앞서 상세히 설명한 바와 같이 본 발명의 직류컨버터를 이용한 전원공급 시스템은 IT 기술의 가속화로 인해 꾸준히 증가추세를 보이고 있는 직류전원의 수요를 충족시키기 위해 발전기로부터 생산된 교류전력을 정류기를 통해 직류전력으로 변환시켜 필요 단위의 배선망에 공급함으로써, 직류/교류 또는 교류/직류의 변환에 동반되는 손실을 절감하고, 기기 내부에 정류기가 내장될 필요가 없어 기기의 부피를 줄일 수 있으며, 아답터의 사용이 불필요하게 되어 배선이 간결하게 된다. As described in detail above, the power supply system using the DC converter of the present invention converts the AC power produced from the generator to the DC power through the rectifier to meet the demand of the DC power which is steadily increasing due to the acceleration of IT technology. It is possible to reduce the loss associated with the conversion of DC / AC or AC / DC, and to reduce the volume of the device because there is no need to incorporate a rectifier inside the device. The wiring becomes concise.

Claims (3)

발전소로부터 공급되는 교류전원의 배전계통 사이에 AC/DC 정류기(100)가 더 포함되어 있어, 상기 AC/DC 정류기(100)로 정류 된 직류전원이 필요 단위의 배선망에 공급되어 직접 직류부하와 연결되는 것을 특징으로 하는 세대별 직류컨버터를 이용한 전원공급 시스템.AC / DC rectifier 100 is further included between the distribution system of the AC power supplied from the power plant, so that the DC power rectified by the AC / DC rectifier 100 is supplied to the wiring network of the required unit so that the direct DC load and Power supply system using a generation-specific DC converter, characterized in that the connection. 제 1항에 있어서,The method of claim 1, 상기 AC/DC 정류기(100)는 댁내의 직류부하들의 전원을 공급하기 위해 각 세대의 분전반으로 공급되도록 설치되는 것을 특징으로 하는 직류컨버터를 이용한 전원공급 시스템.The AC / DC rectifier 100 is a power supply system using a DC converter, characterized in that it is installed to be supplied to the distribution panel of each generation in order to supply the power of the DC load in the home. 제 1항에 있어서,The method of claim 1, 상기 AC/DC 정류기(100)가 전원을 공급하는 필요단위의 배선망은 건물 전체, 건물 단지, 지역 망 중 어느 하나인 것을 특징으로 하는 직류컨버터를 이용한 전원공급 시스템.The AC / DC rectifier 100 is a power supply system using a DC converter, characterized in that the wiring network of the required unit for supplying power is any one of the whole building, building complex, local network.
KR1020060113998A 2006-11-17 2006-11-17 System for supply the source of electricity using the direct-current converter KR20080044676A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012065538A (en) * 2010-09-16 2012-03-29 Samsung Sdi Co Ltd Power storage system
US9041354B2 (en) 2009-12-23 2015-05-26 Samsung Sdi Co., Ltd. Energy storage system and method of controlling the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9041354B2 (en) 2009-12-23 2015-05-26 Samsung Sdi Co., Ltd. Energy storage system and method of controlling the same
JP2012065538A (en) * 2010-09-16 2012-03-29 Samsung Sdi Co Ltd Power storage system
US8872380B2 (en) 2010-09-16 2014-10-28 Samsung Sdi Co., Ltd. Energy storage system

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