KR20200063616A - PV, ESS system control method through DR algorithm in household - Google Patents

PV, ESS system control method through DR algorithm in household Download PDF

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KR20200063616A
KR20200063616A KR1020180149536A KR20180149536A KR20200063616A KR 20200063616 A KR20200063616 A KR 20200063616A KR 1020180149536 A KR1020180149536 A KR 1020180149536A KR 20180149536 A KR20180149536 A KR 20180149536A KR 20200063616 A KR20200063616 A KR 20200063616A
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South Korea
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ess
algorithm
control method
energy
system control
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KR1020180149536A
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Korean (ko)
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박세현
박성환
조건희
박상민
이택림
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중앙대학교 산학협력단
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Publication of KR20200063616A publication Critical patent/KR20200063616A/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
    • 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
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • 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
    • 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
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/10—Photovoltaic [PV]
    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • 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
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil 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
    • 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

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

Abstract

Disclosed is a PV and energy storage system (ESS) system control method through an in-home demand response (DR) algorithm, which enables energy efficiency improvement and cost reduction. A DR technology is further refined to be expanded into household units, and an energy demand algorithm is used to efficiently control the PV and ESS in the home.

Description

가정 내 수요 반응 알고리즘을 통한 PV, ESS 시스템 제어 방식{PV, ESS system control method through DR algorithm in household}PV, ESS system control method through DR algorithm in household}

본 발명은 가정 내 수요 반응 알고리즘을 통한 PV, ESS 시스템 제어 방식에 관한 것이다. The present invention relates to a PV, ESS system control method through a home demand response algorithm.

종래의 에너지 수요 반응 기술은 지역 단위 혹은 건물 단위로 이루어져 있어 세밀화 되지 못하고 사용자가 수동적으로 에래너지 조절을 해야 하는 한계점이 있으며, PV와 ESS 기술 또한 실시간 에너지 수요를 반영하지 못하고 PV로부터 충전된 에너지를 ESS에 저장하고 사용자가 직접 제어해야 하는 불편함을 가지고 있다.Conventional energy demand response technology is composed of regional units or building units, so it cannot be refined, and there is a limitation in that users need to manually adjust energy, and PV and ESS technologies also do not reflect real-time energy demand and receive energy charged from PV. It has the inconvenience of being stored in the ESS and controlled by the user.

본 발명은 종래기술의 문제점을 해결하기 위해 전력 에너지 수요 반응을 가정 단위로 세분화하여 적용하였으며, 이에 그치지 않고 PV와 ESS 까지 연계하고 실시간으로 알고리즘에 의해 능동적으로 제어, 에너지 효율과 비용 절감을 꾀할 수 있도록 한 것이 종래 기술과의 차이점이다.In order to solve the problems of the prior art, the present invention has been applied by subdividing the power energy demand response into household units, and not only this, but also connecting to PV and ESS and actively controlling by an algorithm in real time to reduce energy efficiency and cost. What makes it possible is the difference from the prior art.

지역 단위 또는 빌딩 단위로 이루어지고 있는 수요 반응(Demand Response) 기술을 좀더 세밀화 하여 가정 단위로까지 확장하고, 에너지 수요 알고리즘을 통해 가정 내 PV와 ESS를 효율적으로 제어하여 에너지 효율 향상 및 비용 절감을 할수 있도록 하는 것이 본 발명의 목적이다.The demand response technology, which is carried out at the regional level or the building level, can be further refined and extended to the home level, and energy efficiency and cost can be reduced by efficiently controlling the PV and ESS in the home through the energy demand algorithm. It is an object of the present invention.

상기한 바와 같은 목적을 달성하기 위하여, 본 발명의 일 실시예에 따르면, 가정 내 수요 반응 알고리즘을 통한 PV, ESS 시스템 제어 방식이 제공된다. In order to achieve the above object, according to an embodiment of the present invention, a PV, ESS system control method through a demand response algorithm in the home is provided.

본 발명은 가정 내 전력 에너지를 수요 반응 알고리즘에 따라 PV, ESS를 함께 제어하는 시스템으로써, 이러한 시스템이 가정 단위로까지 적용될 경우 전력 피크치에 더욱 유동적으로 대응 가능하게 되어 전력 계통의 안정화를 도모할 수 있다. 또한 대규모 블랙아웃과 같은 경우를 미연에 예방할 수 있으며, 효율적인 에너지 소모를 통해 비용 절감을 기대할 수 있다.The present invention is a system that controls PV and ESS together in accordance with the demand response algorithm for power energy in the home. When such a system is applied to a home unit, it becomes possible to more flexibly respond to the power peak value, thereby stabilizing the power system. have. In addition, cases such as large-scale blackout can be prevented in advance, and cost reduction can be expected through efficient energy consumption.

도 1은 본 발명에서 제안하는 가정 내 수요 반응 알고리즘을 통한 PV, ESS 시스템 제어 방식에 대한 전체적인 블록도이다. 1 is an overall block diagram of a PV and ESS system control method through an in-home demand response algorithm proposed by the present invention.

본 발명은 다양한 변경을 가할 수 있고 여러 가지 실시예를 가질 수 있는 바, 특정 실시예들을 도면에 예시하고 상세하게 설명하고자 한다.The present invention can be applied to various changes and can have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail.

그러나, 이는 본 발명을 특정한 실시 형태에 대해 한정하려는 것이 아니며, 본 발명의 사상 및 기술 범위에 포함되는 모든 변경, 균등물 내지 대체물을 포함하는 것으로 이해되어야 한다. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

본 발명은 가정 단위 수요 반응 알고리즘을 통해 PV와 ESS를 제어하는 시스템에 관한 것으로, 보다 구체적으로는 전력 에너지 수요 반응을 실시간으로 반영하여 알고리즘에 의해 PV와 ESS가 능동적으로 작동하도록 하는 것이다. The present invention relates to a system for controlling PV and ESS through a home unit demand response algorithm, and more specifically, to reflect power energy demand response in real time so that PV and ESS are actively operated by an algorithm.

흔히 사용되는 ‘수요 반응(Demand Response, DR)’ 은 한국전력 주도 하에 지역 단위 혹은 빌딩 단위에 시간대별 전력 요금을 차등 적용하여, 전력 수요가 높을 때는 높은 전기 요금을, 전력 수요가 낮을 때는 낮은 전기 요금을 적용하여 사용자(수요자) 입장에서 전기 요금에 따라 알아서 전기 에너지를 절약하거나 활용하는 것을 의미한다. 'Demand Response (DR)', which is commonly used, applies differential electricity rates for each region or building unit under the leadership of KEPCO, resulting in high electricity rates when power demand is high and low electricity when power demand is low. It means that the user (consumer) applies the fee and saves or utilizes electric energy by taking care of it according to the electric fee.

태양광(PV)는 이미 많은 곳에 상용화된 기술로 해당 기술 자체를 발명하는 것 보다 다른 기술과 어떻게 연계하여 효율적으로 사용하고 관리하는 것이 더욱 주목되고 있다. PV (PV) is a technology that has already been commercialized in many places, and it is more attention to efficiently use and manage it in connection with other technologies than to invent the technology itself.

에너지 저장 장치(Energy Storage System,ESS)는 전기 에너지를 저장할 수 있는 장치로 여분의 전기 에너지를 저장하여 전기가 필요할 때 공급해주는 방식으로, 전력 계통 안정화에 크게 기여하고 비용 절감에도 크게 기여하는 주목받는 기술이다. Energy Storage System (ESS) is a device that can store electrical energy and stores excess electrical energy to supply it when electricity is needed. Technology.

도 1은 본 발명에서 제안하는 가정 내 수요 반응 알고리즘을 통한 PV, ESS 시스템 제어 방식에 대한 전체적인 블록도이다. 가정 내 전기 에너지 소모 추이를 분석하여, 실시간 전기 에너지 소모가 증가 곡선을 나타내는지 혹은 하강 곡선을 나타내는지에 따라 동작 여부가 나뉘게 된다. 하강 곡선을 나타낼 경우 태양광 패널(PV) 단으로 이동하여 전기 에너지를 가정용 ESS에 저장하고, 상승 곡선을 나타낼 경우 가정용 ESS 단으로 이동하여 ESS 내부에 충전된 전기 에너지가 있는지 확인한다. ESS 내부에 충전된 전기 에너지가 있을 경우 ESS로부터 전기에너지를 소모하고, 그렇지 않을 경우에는 기존 전력 계통망인 마이크로 그리드를 이용하여 전기에너지를 수급하게 된다.1 is an overall block diagram of a PV and ESS system control method through an in-home demand response algorithm proposed by the present invention. Whether or not the operation is divided according to whether the real-time electric energy consumption represents an increase curve or a downward curve by analyzing the trend of electric energy consumption in the home. If it shows a downward curve, it moves to the photovoltaic panel (PV) stage to store electrical energy in the household ESS, and if it shows an upward curve, it moves to the household ESS stage to check if there is charged electric energy inside the ESS. If there is electric energy charged in the ESS, the electric energy is consumed from the ESS, otherwise, electric energy is supplied and received using a micro grid, which is an existing power grid.

상기한 본 발명의 실시예는 예시의 목적을 위해 개시된 것이고, 본 발명에 대한 통상의 지식을 가지는 당업자라면 본 발명의 사상과 범위 안에서 다양한 수정, 변경, 부가가 가능할 것이며, 이러한 수정, 변경 및 부가는 하기의 특허청구범위에 속하는 것으로 보아야 할 것이다.The above-described embodiments of the present invention have been disclosed for purposes of illustration, and those skilled in the art having various knowledge of the present invention will be able to make various modifications, changes, and additions within the spirit and scope of the present invention. Should be regarded as belonging to the following claims.

Claims (1)

가정 내 수요 반응 알고리즘을 통한 PV, ESS 시스템 제어 방식.PV, ESS system control method through home demand response algorithm.
KR1020180149536A 2018-11-28 2018-11-28 PV, ESS system control method through DR algorithm in household KR20200063616A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102294289B1 (en) 2021-02-24 2021-08-26 이온어스(주) Device for controlling ess used home

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102294289B1 (en) 2021-02-24 2021-08-26 이온어스(주) Device for controlling ess used home

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