KR100646685B1 - Power system stabilizer by super capacitor - Google Patents

Power system stabilizer by super capacitor Download PDF

Info

Publication number
KR100646685B1
KR100646685B1 KR1020050101305A KR20050101305A KR100646685B1 KR 100646685 B1 KR100646685 B1 KR 100646685B1 KR 1020050101305 A KR1020050101305 A KR 1020050101305A KR 20050101305 A KR20050101305 A KR 20050101305A KR 100646685 B1 KR100646685 B1 KR 100646685B1
Authority
KR
South Korea
Prior art keywords
power
super capacitor
load controller
converter
inverter
Prior art date
Application number
KR1020050101305A
Other languages
Korean (ko)
Inventor
정훈
Original Assignee
한국전력공사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한국전력공사 filed Critical 한국전력공사
Priority to KR1020050101305A priority Critical patent/KR100646685B1/en
Application granted granted Critical
Publication of KR100646685B1 publication Critical patent/KR100646685B1/en

Links

Images

Classifications

    • 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
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
    • 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
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • 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
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • 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
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter
    • 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
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/50—Charging of capacitors, supercapacitors, ultra-capacitors or double layer capacitors
    • 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
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/13—Energy storage using capacitors

Landscapes

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

Abstract

A power system stabilizer is provided to enhance operation stability of a power system by absorbing and discharging an excessive and deficient portion of electric power by using a super capacitor. A power system stabilizer using a super capacitor includes a load controller(2), a converter(3), a super capacitor(4), and an inverter(5). The load controller receives power from a system by a system frequency and voltage and delivers the power to the converter. The load controller receives power from the inverter and delivers the power to the system. The converter is connected to the load controller, which supplies excessive power to the super capacitor, when a power supply is greater than a power demand. The super capacitor is connected to the converter and the inverter and stores/discharges an electric energy. When the power supply is smaller than the power demand, the inverter supplies the electric energy, which is stored in the super capacitor, to the load controller.

Description

슈퍼 캐패시터를 이용한 전력계통 안정화 장치{Power system stabilizer by super capacitor}Power system stabilizer using super capacitors

도 1은, 본 발명에 따른 슈퍼 캐패시터를 이용한 전력계통 안정화 장치의 전체 구성도이다.1 is an overall configuration diagram of a power system stabilization apparatus using a super capacitor according to the present invention.

＜도면의 주요부분에 대한 부호의 설명＞<Description of the code | symbol about the principal part of drawing>

1 --- 악성 부하,1 --- malicious load,

2 --- 부하 제어기,2 --- load controller,

3 --- 컨버터,3 --- converter,

4 --- 슈퍼 캐패시터4 --- super capacitor

5 --- 인버터.5 --- inverter.

본 발명은 슈퍼 캐패시터를 이용한 전력계통 안정화 장치에 관한 것으로, 특히 슈퍼 캐패시터를 단 시간 에너지 저장장치로 이용하여 전력계통을 안정화시키기 위한 슈퍼 캐패시터를 이용한 전력계통 안정화 장치에 관한 것이다.The present invention relates to a power system stabilization apparatus using a super capacitor, and more particularly, to a power system stabilization apparatus using a super capacitor for stabilizing a power system by using a super capacitor as a short time energy storage device.

근래 유가의 고공행진이 계속되는 가운데 국가적 차원에서 에너지 확보를 위 한 신 재생 에너지 보급 확대 정책으로 풍력, 태양광 등의 에너지 생산 설비가 급속히 증가하는 추세이나, 이를 활용하는 측면에서는 여전히 여러 가지 문제점이 나타나고 있으며, 대표적인 것으로 전력계통의 품질문제가 대두되고 있다.In recent years, as oil prices continue to progress, energy production facilities such as wind and solar power are rapidly increasing due to the expansion of renewable energy to secure energy at the national level, but there are still various problems in terms of utilizing them. In particular, quality problems of power systems are emerging.

즉, 풍력의 경우 전체 계통용량의 10-15%를 넘을 경우 계통의 주파수 변동, 전압 변동, 고조파 발생 등에 악영향을 미치게 되는데, 이는 계통부하에 따라 투입되는 에너지(연료)량을 조정할 수 있는 타 발전설비와 달리 풍력과 같은 신 재생 에너지 설비의 경우 환경(풍속)에 따라 공급량이 결정되어 버리기 때문이다.In other words, if the wind power exceeds 10-15% of the total system capacity, it will adversely affect the frequency fluctuations, voltage fluctuations, and harmonics generation of the system. This is because other power generation can adjust the amount of energy (fuel) input according to the system load. Unlike facilities, in the case of renewable energy facilities such as wind power, the supply is determined by the environment (wind speed).

예컨대, 계통의 수요와 상관없이 그 때의 환경에 따라 전력을 생산하는 설비이기 때문에 계통용량이 크지 않은 도서지방의 경우 특히 문제가 심각한 것이 현실이다.For example, the problem is particularly serious in the case of islands where the system capacity is not large because the facility generates electricity according to the environment at that time regardless of the demand of the system.

이와 관련하여, 근래 경북도청에서 추진하여 설치한 600kW 규모의 풍력발전기 역시 이러한 경우로서, 울릉도는 평소 계통부하 2000~3000kW이고, 피크 때에도 5000kW 정도인 점을 감안하면 계통용량에 비해 풍력발전기 용량이 차지하는 비율이 지나치게 높은 상황이다.In this regard, the 600kW wind power generator recently promoted and installed by Gyeongbuk Provincial Office is such a case. Ulleungdo usually has a 2000 ~ 3000kW system load and 5000kW even at the peak. The rate is too high.

한편, 규모의 경제가 민감하게 지배하는 에너지 설비의 경우 용량이 적은 설비를 설치하게 되면 계통품질은 유지할 수 있으나 비용(전력생산가격)이 문제가 된다.On the other hand, in the case of energy equipment that is dominated by economies of scale, the installation of small capacity can maintain the system quality, but the cost (power production price) becomes a problem.

따라서, 신 재생 에너지 설비에서 생산되는 에너지를 효과적으로 이용하면서도 전력계통의 품질을 확보할 수 있는 장치가 요구되고 있는 것이 현실이다.Therefore, there is a need for a device that can secure the quality of the power system while effectively using the energy produced by renewable energy facilities.

결국, 상술한 바와 같이 최근에 신 재생 에너지 설비의 보급 확대 정책으로 도서지방에 풍력발전기 등의 설비의 설치가 추진되고 있으나, 울릉도에서 발생한 문제와 같이 풍력발전기는 대부분 유도발전기로서 전력계통의 악성 부하로 작용하므로 품질문제가 대두되어 많은 예산을 투입하고도 설비를 활용하지 못하는 상황 등과 같은 현안 뿐 아니라, 향후 이러한 설비의 보급 확대가 원활하게 이루어지기 위해서는 전력계통의 품질을 확보하면서도 에너지를 유용하게 이용할 수 있는 장치가 필요하다.As a result, as mentioned above, the installation of wind power generators and the like has been promoted in the island region due to the expansion of renewable energy facilities. However, wind turbines are mostly induction generators. As a result of quality problems, such problems cannot be utilized even after a large budget is invested, and in order to smoothly expand the supply of these facilities in the future, it is necessary to use energy while securing the quality of the power system. You need a device that can.

즉, 전력계통 안정화 분야에서는 동기 조상기, 분로 리액터, 전력용 콘덴서 등의 여러 가지 설비가 있으나, 수요와 공급이 지속적으로 일치하지 않는 경우에는 근본적으로 에너지를 저장할 수 있는 설비가 필요한 것이다.That is, in the field of power system stabilization, there are various facilities such as synchronous shunt, shunt reactor, and power condenser. However, if demand and supply do not consistently match, there is a need for a facility that can fundamentally store energy.

본 발명은 상기한 점을 감안하여 발명된 것으로, 소규모 전력계통에서 수요와 공급의 불일치에 의해 발생하는 계통의 전력품질 저하를 보상하여 전력계통의 안정성을 확보하기 위한 슈퍼 캐패시터를 이용한 전력계통 안정화 장치를 제공하는 것을 목적으로 한다.The present invention has been invented in view of the above-mentioned, power system stabilization apparatus using a super capacitor to ensure the stability of the power system by compensating for the power quality degradation caused by the mismatch of supply and demand in a small power system The purpose is to provide.

즉, 순시적으로 발생하는 전력공급의 초과 및 부족분을 슈퍼 캐패시터를 이용하여 흡수 및 방출함으로써 기존의 배터리를 채용한 계통 안정화 장치에 비해 신뢰성 및 안정성이 높으면서 유지보수성과 에너지 변환 효율이 향상된 슈퍼 캐패시터를 이용한 전력계통 안정화 장치를 제공하는 것을 목적으로 한다.In other words, the supercapacitor absorbs and releases instantaneous power supply excess and deficiency by using a supercapacitor, so that the supercapacitor with higher reliability and stability than the conventional system stabilization system employing a battery is improved. An object of the present invention is to provide a power system stabilization device.

상기한 바와 같은 목적을 달성하기 위한 본 발명의 전력계통 안정화 장치는, 계통으로부터 전력을 공급받아 컨버터로 전달하거나, 인버터로부터 전력을 공급받아 계통으로 전달하기 위한 부하 제어기와, 전력 공급이 수요보다 클 경우에는 부하 제어기에 의해 공급받은 초과전력을 슈퍼 캐패시터로 전달하기 위한 컨버터, 전기에너지를 저장 또는 방출하기 위한 슈퍼 캐패시터 및, 전력 공급이 수요보다 작을 경우에는 슈퍼 캐패시터에 저장되어 있는 전기에너지를 부하 제어기로 전달하기 위한 인버터를 구비하여 구성된다.Power system stabilization apparatus of the present invention for achieving the above object, the load controller for receiving power from the system to transfer to the converter, or receives power from the inverter and transfers to the system, the power supply is greater than the demand In this case, a converter for transferring excess power supplied by the load controller to the super capacitor, a super capacitor for storing or releasing electric energy, and the electric energy stored in the super capacitor when the power supply is smaller than the demand, is used. It is configured with an inverter for delivering to.

따라서, 상기와 같이 이루어진 본 발명에 의하면, 컨버터를 통해 슈퍼 캐패시터에서 계통의 초과전력을 흡수함으로써 계통의 안정성에 기여하고, 슈퍼 캐패시터에서 인버터를 통해 계통의 부족한 전력을 보충함으로써 계통의 안정성에 기여한다.Therefore, according to the present invention made as described above, by contributing to the system stability by absorbing the excess power of the system in the super capacitor through the converter, and contributes to the stability of the system by supplementing the insufficient power of the system through the inverter in the super capacitor. .

(실시예)(Example)

이하, 본 발명의 실시예를 도면을 참조하면서 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

한편, 본 발명은 상술한 바와 같이 전력계통의 안정화 장치에 의한 계통의 안정과 이러한 안정화 장치의 신뢰성 및 안정성을 높이면서 유지보수성을 향상시키는 것에 초점을 맞추고 있는 것으로, 수 초에서 수십 초까지의 전력계통 불안정은 초 단시간용 계통 안정화 장치와는 그 개념이 다르며, 기존의 동기 조상기나 전력용 콘덴서 등으로 해결될 수 있는 문제는 아니다.On the other hand, the present invention focuses on improving the stability of the system by the stabilization device of the power system as described above, and improving the maintainability while increasing the reliability and stability of the stabilization device, power from a few seconds to several tens of seconds The system instability is different from the system stabilization device for the short time, and it is not a problem that can be solved by a conventional synchronous precipitator or a power capacitor.

즉, 어떠한 형태로든 에너지를 일시적으로 저장할 수 있는 장치가 있어야 하며, 이러한 장치로부터 계통 전력의 과부족을 해결하는 방안이 마련되어야 한다.In other words, there must be a device capable of temporarily storing energy in any form, and a solution must be devised to solve the shortage of grid power from such a device.

또한, 기존의 배터리와 같이 상대적으로 짧은 수명이 있는 장치를 사용하게 되면 전체 시스템의 신뢰성 및 안정성을 확보하기 어렵고, 에너지 변환 효율(0.7-0.85)도 높지 않으며, 유지보수 측면에서도 대단히 불리한 요소가 되므로, 수명이 반영구적이면서도 에너지 변환 효율(0.95 이상)이 높고, 빈번한 충방전에 의한 성능열화가 발생하지 않아야 한다.In addition, using a device with a relatively short lifespan, such as a conventional battery, is difficult to ensure the reliability and stability of the entire system, does not have a high energy conversion efficiency (0.7-0.85), and is very disadvantageous in terms of maintenance. However, it should be semi-permanent, high energy conversion efficiency (more than 0.95), and no deterioration of performance due to frequent charging and discharging.

상기와 같은 현안 문제를 해결하기 위해 본 발명에서 채용한 슈퍼 캐패시터(Super Capacitor)를 기존의 배터리와 비교한 사항을 이하의 [표 1]에 나타냈다.In order to solve the above-mentioned problems, a matter of comparing a super capacitor (Super Capacitor) employed in the present invention with a conventional battery is shown in the following [Table 1].

[표 1]TABLE 1

구분  division Battery Battery Super Capacitor Super Capacitor 수명  life span 짧다(<500 회)Short (<500 times) 길다(>500,000회)Long (> 500,000) 전력변환 효율  Power conversion efficiency 낮다(0.7 - 0.85)Low (0.7-0.85) 높다(>0.95)High (> 0.95) 대전류 충방전  Large current charge and discharge 불가능(성능 저하)Impossible (degraded) 가능possible 유지보수  Maintenance 필요need 불필요Unnecessary 에너지 밀도/kg  Energy density / kg 높다high 중간middle 가격  price 낮다low 높다high

상기 [표 1]로부터 알 수 있는 바와 같이, 단위 질량당 에너지 밀도가 기존 배터리에 비해 낮은 점과 가격이 높은 점을 제외하면, 본 발명에 채용된 슈퍼 캐패시터는 배터리에 비해 대단히 우수한 특성을 갖고 있는 것이다.As can be seen from Table 1, except that the energy density per unit mass is lower than that of the conventional battery and the price is high, the supercapacitor employed in the present invention has very excellent characteristics compared to the battery. will be.

아울러, 전력계통 안정화 장치에서 슈퍼 캐패시터는 장시간이 아닌 단시간( 수 초에서 수십 초) 동안의 에너지 저장장치로서 이용되고, 대전류 충방전이 가능하기 때문에, 배터리보다 적은 용량으로 구성할 수 있어 상기와 같은 에너지 밀도는 그리 중요하지 않으며, 최근의 기술개발과 생산기술 향상에 힘입어 가격 또한 큰 폭으로 하락하고 있는 추세이다.In addition, the supercapacitor in the power system stabilization device is used as an energy storage device for a short time (several seconds to several tens of seconds) instead of a long time, and can be configured with a smaller capacity than a battery because high current charge and discharge are possible. Energy density is not so important, and prices are falling sharply due to recent technological developments and improvements in production technology.

그런데, 도 1에 도시된 바와 같이 전력계통에는 다양한 악성 부하(1)들이 존재하며, 이러한 악성 부하(1)는 그 기동 및 정지 부하변동 등에 따라 주파수와 전압의 변동을 야기하여 전력계통의 품질을 저하시킨다.However, as shown in FIG. 1, various malicious loads 1 exist in the power system, and such malicious loads 1 cause fluctuations in frequency and voltage according to start and stop load fluctuations, thereby degrading the quality of the power system. Let's do it.

즉, 계통의 용량이 큰 경우에는 이와 같은 악성 부하(1)가 미치는 영향은 크지 않으나, 계통의 용량이 크지 않은 독립된 계통에서는 이러한 악성 부하(1)가 미치는 영향은 커지기 때문에, 이에 대한 수요 및 공급의 밸런스를 맞출 필요가 있다.In other words, when the capacity of the system is large, the effect of such a malicious load (1) is not great, but the effect of this malicious load (1) is increased in an independent system, the capacity of the system is not large, supply and demand for this Needs to be balanced.

이에 따라, 본 발명은 도 1에 도시한 바와 같은 슈퍼 캐패시터를 이용한 전력계통 안정화 장치를 실시하게 된 것이다.Accordingly, the present invention is to implement a power system stabilization apparatus using a super capacitor as shown in FIG.

이러한 우수한 특성을 갖고 있는 슈퍼 캐패시터를 채용한 본 발명의 전력계통 안정화 장치를 첨부된 도면을 참조하여 상세히 설명하면 다음과 같다.The power system stabilization apparatus of the present invention employing the supercapacitor having such excellent characteristics will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 슈퍼 캐패시터를 이용한 전력계통 안정화 장치의 전체 구성을 나타낸다.1 shows the overall configuration of a power system stabilization apparatus using a super capacitor according to the present invention.

도 1에 도시한 바와 같이, 본 발명의 슈퍼 캐패시터를 이용한 전력계통 안정화 장치는 부하 제어기(2)와, 컨버터(3), 슈퍼 캐패시터(4) 및, 인버터(5)로 이루어진다.As shown in FIG. 1, the power system stabilization apparatus using the supercapacitor of the present invention includes a load controller 2, a converter 3, a supercapacitor 4, and an inverter 5.

한편, 상기 부하 제어기(2)는 전력계통의 부하에 따른 수요 및 공급의 불균형을 해소하기 위해 계통 주파수 및 전압에 따라 계통으로부터 전력을 공급받아 상기 부하 제어기(2)와 연결된 컨버터(3)로 전달하거나, 상기 부하 제어기(2)와 연결된 인버터(5)로부터 전력을 공급받아 계통으로 전달한다.On the other hand, the load controller 2 receives power from the system according to the system frequency and voltage in order to solve the imbalance of supply and demand according to the load of the power system and transfers it to the converter 3 connected to the load controller 2 Alternatively, the power is supplied from the inverter 5 connected to the load controller 2 to the system.

또한, 상기 부하 제어기(2)와 연결된 컨버터(3)는 전력 공급이 수요보다 클 때, 부하 제어기(2)에 의해 공급받은 초과전력을 상기 컨버터(3) 및 인버터(5)와 연결된 슈퍼 캐패시터(4)로 전달하여 전기에너지로 저장한다.In addition, the converter 3 connected to the load controller 2 has a supercapacitor connected to the converter 3 and the inverter 5 to supply the excess power supplied by the load controller 2 when the power supply is greater than the demand. 4) Save it as electric energy.

또한, 상기 컨버터(3) 및 인버터(5)와 연결된 슈퍼 캐패시터(4)는 상술한 바와 같은 작용 및 효과를 나타내며, 전기에너지를 저장 또는 방출하기 위한 장치이다.In addition, the supercapacitor 4 connected with the converter 3 and the inverter 5 exhibits the functions and effects as described above, and is a device for storing or releasing electrical energy.

더욱이, 상기 부하 제어기(2) 및 슈퍼 캐패시터(4)와 연결된 인버터(5)는 상기 컨버터(3)와는 반대로 전력 공급이 수요보다 작을 때, 슈퍼 캐패시터(4)에 저장되어 있는 전기에너지를 상기 부하 제어기(2)로 전달하기 위한 장치이다.In addition, the inverter 5 connected to the load controller 2 and the super capacitor 4 receives the electrical energy stored in the super capacitor 4 when the power supply is less than the demand, in contrast to the converter 3. It is a device for transferring to the controller (2).

예컨대, 상술한 바와 같이 수요가 급감하거나 공급이 급증하여 계통 주파수가 증가할 경우에, 상기 부하 제어기(2)는 컨버터(3)를 통해 슈퍼 캐패시터(4)로 충전하는 전력량을 증가시킴으로써 계통의 수요 및 공급 균형을 맞추고, 주파수와 전압을 규정치 내로 유지시키게 된다.For example, when the demand decreases or the supply surges and the system frequency increases, the load controller 2 increases the amount of power charged by the supercapacitor 4 through the converter 3. And balance the supply, keeping the frequency and voltage within specified values.

또한, 상기와는 반대로 수요가 급증하거나 공급이 급감하여 계통 주파수가 감소할 경우에, 상기 부하 제어기(2)는 슈퍼 캐패시터(4)로부터 인버터(5) 및 부하 제어기(2)를 통해 전력계통으로 공급하는 전력량을 증가시킴으로써 계통의 균형을 맞추고, 주파수와 전압을 규정치 내로 유지하게 되는 것이다.On the contrary, when the demand increases or the supply decreases so that the system frequency decreases, the load controller 2 is transferred from the supercapacitor 4 to the power system through the inverter 5 and the load controller 2. Increasing the amount of power supplied balances the system and keeps the frequency and voltage within specified values.

상술한 바와 같이 본 발명에 의하면, 소규모 전력계통에서 수요와 공급의 불일치에 의해 발생하는 계통의 전력품질 저하를 보상하여 전력계통의 안정성을 확보할 수 있다.According to the present invention as described above, it is possible to ensure the stability of the power system by compensating for the power quality degradation of the system caused by the mismatch of supply and demand in the small power system.

즉, 순시적으로 발생하는 전력공급의 초과 및 부족분을 슈퍼 캐패시터를 이용하여 흡수 및 방출함으로써 기존의 배터리를 채용한 계통 안정화 장치에 비해 신뢰성 및 안정성을 높이고, 유지보수성과 에너지 변환 효율을 향상시킬 수 있다.In other words, by absorbing and releasing instantaneous power supply excess and shortages using supercapacitors, reliability and stability can be improved, and maintenance and energy conversion efficiency can be improved, compared to the system stabilization system using a conventional battery. have.

Claims (1)

슈퍼 캐패시터를 단 시간 에너지 저장장치로 이용하여 전력계통을 안정화시키기 위한 전력계통 안정화 장치에 있어서,In the power system stabilization device for stabilizing the power system using a super capacitor as a short time energy storage device, 계통 주파수 및 전압에 따라 계통으로부터 전력을 공급받아 컨버터(3)로 전달하거나, 인버터(5)로부터 전력을 공급받아 계통으로 전달하기 위한 부하 제어기(2)와,A load controller 2 for receiving power from the system according to the system frequency and voltage and transferring the power to the converter 3 or receiving power from the inverter 5 and transferring the power to the system; 전력 공급이 수요보다 클 경우, 상기 부하 제어기(2)에 의해 공급받은 초과전력을 슈퍼 캐패시터(4)로 전달하기 위한 상기 부하 제어기(2)와 연결된 컨버터(3),If the power supply is greater than the demand, the converter 3 connected with the load controller 2 for transferring the excess power supplied by the load controller 2 to the super capacitor 4, 상기 컨버터(3) 및 인버터(5)와 연결됨과 더불어 전기에너지를 저장 또는 방출하기 위한 슈퍼 캐패시터(4) 및,A supercapacitor 4 connected to the converter 3 and the inverter 5 for storing or releasing electrical energy; 상기 컨버터(3)와는 반대로 전력 공급이 수요보다 작을 경우, 상기 슈퍼 캐패시터(4)에 저장되어 있는 전기에너지를 상기 부하 제어기(2)로 전달하기 위한 상기 부하 제어기(2) 및 슈퍼 캐패시터(4)와 연결된 인버터(5)를 구비하여 구성된 것을 특징으로 하는 슈퍼 캐패시터를 이용한 전력계통 안정화 장치.In contrast to the converter 3, when the power supply is smaller than the demand, the load controller 2 and the super capacitor 4 for transferring the electric energy stored in the super capacitor 4 to the load controller 2 are provided. Power system stabilization apparatus using a supercapacitor, characterized in that it comprises an inverter (5) connected to the.
KR1020050101305A 2005-10-26 2005-10-26 Power system stabilizer by super capacitor KR100646685B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020050101305A KR100646685B1 (en) 2005-10-26 2005-10-26 Power system stabilizer by super capacitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020050101305A KR100646685B1 (en) 2005-10-26 2005-10-26 Power system stabilizer by super capacitor

Publications (1)

Publication Number Publication Date
KR100646685B1 true KR100646685B1 (en) 2006-11-23

Family

ID=37712659

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020050101305A KR100646685B1 (en) 2005-10-26 2005-10-26 Power system stabilizer by super capacitor

Country Status (1)

Country Link
KR (1) KR100646685B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100728828B1 (en) * 2005-09-30 2007-06-19 고려대학교 산학협력단 Method for stabilizing power system and a medium having computer readable program
KR101034271B1 (en) * 2008-11-28 2011-05-16 한국전기연구원 Operating reserve power supply system in electric power system, and control method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05284794A (en) * 1992-03-27 1993-10-29 Tokyo Electric Power Co Inc:The Method and apparatus for operating variable speed pumped storage hydroelectric generator facility

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05284794A (en) * 1992-03-27 1993-10-29 Tokyo Electric Power Co Inc:The Method and apparatus for operating variable speed pumped storage hydroelectric generator facility

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100728828B1 (en) * 2005-09-30 2007-06-19 고려대학교 산학협력단 Method for stabilizing power system and a medium having computer readable program
KR101034271B1 (en) * 2008-11-28 2011-05-16 한국전기연구원 Operating reserve power supply system in electric power system, and control method thereof

Similar Documents

Publication Publication Date Title
CA2562609C (en) Methods and apparatus for coupling an energy storage system to a variable energy supply system
JP5100132B2 (en) Frequency adjustment system and frequency adjustment method
Zhang et al. Research on battery supercapacitor hybrid storage and its application in microgrid
ES2542327T3 (en) Isolated network and procedure for the operation of an isolated network
US8941263B2 (en) Energy storage system and method of controlling the same
US8253271B2 (en) Home power supply system
JPWO2010038662A1 (en) Secondary battery power control method
CN110611320B (en) Double-fed wind turbine generator inertia and primary frequency modulation method based on supercapacitor energy storage control
CN105576685A (en) Energy storage system for new energy micro-grid
JP2016021863A (en) Power supply system
KR20150106694A (en) Energy storage system and method for driving the same
CN105552966A (en) Energy-storage direct-drive permanent magnet wind power generation system
CN105846457B (en) Distributed power source and micro-grid hybrid power supply system
KR100646685B1 (en) Power system stabilizer by super capacitor
Wei et al. Discussion on application of super capacitor energy storage system in microgrid
CN107482662A (en) A kind of composite energy storage system suitable for micro-capacitance sensor
Kumar et al. Power balance for WTG-Solar PV fed DC microgrids with battery and supercapacitor support
Chowdhury et al. Role of grid integration of distributed generation in power quality enhancement: A review
Zhao et al. Control strategy of automatic charging/discharging of hybrid energy storage systems in DC micro-grid island mode
Bouaziz et al. Enhancing the transient performance of a DFIG_WT in case of HVRT using SMES
CN202121371U (en) Multifunctional power supply apparatus integrating energy
KR20100035269A (en) Power system stabilizer
Wang et al. Bi-level Optimization Model for Coordinated Operation of Wind Power and Energy Storage System
Miller et al. A VRLA battery energy storage system for Metlakatla, Alaska
Charlangsut et al. Adjustment Voltage Drop in Commercial with Photovoltaic and Battery Energy Storage System on Death End Distribution System

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20121102

Year of fee payment: 7

FPAY Annual fee payment

Payment date: 20131101

Year of fee payment: 8

FPAY Annual fee payment

Payment date: 20141103

Year of fee payment: 9

FPAY Annual fee payment

Payment date: 20151103

Year of fee payment: 10

FPAY Annual fee payment

Payment date: 20161102

Year of fee payment: 11

FPAY Annual fee payment

Payment date: 20181101

Year of fee payment: 13