• Title/Summary/Keyword: Cost based pool

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Settlement system requirement analysis of electricity market (전력거래시장에서 정산을 위한 시스템 요구사항 분석)

  • Kim, Mi-Sung;Kim, Min-Bae
    • Proceedings of the KIEE Conference
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    • 2008.11a
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    • pp.421-422
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    • 2008
  • 우리나라는 정부의 전력산업 구조 개편 계획에 따라 2001년부터 전력거래시장을 도입하였고 초기 단계 전력거래시장을 운영하기 위한 "발전경쟁(CBP : Cost Based Pool)시스템"을 국내기술로 개발하였다. 전력산업 구조 개편 잠정중단으로 발전경쟁시장이 장기화되어, 99년도 개발당시 초기단계(2$\sim$3년간)에만 사용할 예정이었던 CBP 시스템이 지속적으로 운영 되어왔다. 발전경쟁시장이 장기화됨에 따라 회원사의 수가 시장 초기 10개사에서 2008년 8월 기준 226개사로 증가하였고, 전력거래량 규모도 13조원에서 21조원으로 확대되었다. 시장의 변화에 파라 전력시장의 운영규칙 또한 여러 차례 개선되었다. IT기술도 급격히 발달하여 이에 따라 CBP 시스템도 변화하여 왔다 본 논문에서는 발전경쟁시장에서 정산시스템의 현재 역할과 기능 및 요구사항을 살펴보기로 한다.

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A case study applied for resource scheduling and commitment by using MIP method in Korea wholesale electricity market (한국전력시장에서 MIP기법을 활용한 가격결정발전계획 적용사례 분석)

  • Eom, Young-Meen;Jeon, Jong-Taek;Hwang, Bong-Hwan;Cho, Seong-Bin
    • Proceedings of the KIEE Conference
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    • 2009.07a
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    • pp.526_527
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    • 2009
  • CBP(Cost-Based Pool) 시장에서 발전계획을 수립하고 시장가격을 산출할 목적으로 1999년 Alstom-ESCA(현 AREVA)사로부터 RSC(Resource Scheduling and Commitment, 이하 RSC)프로그램이 도입되었다. 그러나 단기간 발전경쟁시장 체제에서 사용할 목적으로 도입되었기 때문에 현재 CBP시장이 장기화가 예상되는 시점에서 전력시장 환경 및 구조변화의 흐름속에서 요구되는 기능을 제공할 수 있는 향상된 프로그램 도입의 필요성이 증가하게 되었고 이에 2008년 AREVA사로부터 한층 성능이 향상된 프로그램을 도입하게 되었고 올해 수차례의 모의운영을 통해 최적화 효율성 향상으로 발전비용이 감소되는 효과를 보여주고 있다. 본 논문에서는 이에 대한 모의운영 결과를 보여주고자 한다.

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Electricity Trading Arrangements Improvement Plan under the Cost Based Pool (변동비반영전력시장에서의 전력거래제도 개선방안 및 추진계획)

  • Kim, Kwang-In;Kim, Yong-Wan;Moon, Kyeong-Seob;Ok, Ki-Yeol;Baek, Sun-Hi
    • Proceedings of the KIEE Conference
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    • 2006.07a
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    • pp.339-340
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    • 2006
  • 현재 운영되고 있는 변동비반영전력시장(CBP)은 2001년 4월 개설되어 구조개편 초기의 혼란을 최소화하고 2004년으로 예정된 도매전력시장 운영되기 전까지의 과도기 운영을 목적으로 설계되었다. 이는 제한된 경쟁시장으로 전력시장의 효율성 제고와 안정적인 전력공급에 어느 정도 기여하였으며, 내재된 문제가 제기되어도 곧 도입될 차기 도매전력시장에서 개선하려고 하였다. 참여정부의 배전분할 중단결정에 따라 변동비반영전력 시장의 장기운영이 불가피해지게 되었고, 전력거래소는 배전분할 중단 발표직후인 2004년 7월부터 전력시장 제도개선 논의 시작하였으며, 2005년 말에는 개선방안 연구결과를 발표하였다. 본 논문에서는 연구결과인 개선방안과 이를 시행하기 위한 추진계획을 설명하고 있다.

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A Study on the Assessment of Reasonable Reserve Margin in Basic Plan of Electricity Supply and Demand (전력수급기본계획의 적정 설비예비율 산정 개선방안)

  • Kim, C.S.;Rhee, C.H.
    • Proceedings of the KIEE Conference
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    • 2006.07a
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    • pp.418-419
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    • 2006
  • After electricity power industry restructuring, "Long term power development plan", setting up by government, is replaced by "Basic plan of electricity supply and demand". In this basic plan, one of the most important factors is assessment of appropriate capacity margin. The benefit of GENCO is decided by the market price, and the price is largely affected by the level of reserve margin. As a consequence, appropriate reserve margin is determined by market power. However, Cost Based Pool(CBP) is a limited competitive market, and government policy for supply and demand is very important factor or reserve margin determination. This paper points out issues about existing reserve margin assessment method which is used in basic plan and suggests improved assessment method. In the case study, capacity margin is calculated by proposed assessment method and result shows the advantages of suggested method.

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Study on financial effects resulted from modified settlement rules (CBP시장의 정산 규칙개정에 따른 양수발전의 재무적 영향 분석)

  • Lee, Jae-Gul;Yoon, Yong-Beum;Ahn, Nam-Sung
    • Proceedings of the KIEE Conference
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    • 2005.11b
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    • pp.177-179
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    • 2005
  • In Korean Power Market, Cost-based Bidding Pool is maintaining the present condition because restructuring of electricity industry is holding. When this market is designed, Settlement rules for Pumped-storage power plant made unfairly by other power plants. These rules were considered contribution of Pumped-storage power plant to network operation. by the way, there are some discussion about Settlement rules modification. so in this paper, we calculated financial effect of power plant by modified rules. And when we modify market rules, we can offer numerical information.

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PREDICTION OF WELDING PARAMETERS FOR PIPELINE WELDING USING AN INTELLIGENT SYSTEM

  • Kim, Ill-Soo;Jeong, Young-Jae;Lee, Chang-Woo;Yarlagadda, Prasad K.D.V.
    • Proceedings of the KWS Conference
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    • 2002.10a
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    • pp.295-300
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    • 2002
  • In this paper, an intelligent system to determine welding parameters for each pass and welding position in pipeline welding based on one database and FEM model, two BP neural network models and a C-NN model was developed and validated. The preliminary test of the system has indicated that the developed system could determine welding parameters for pipeline welding quickly, from which good weldments can be produced without experienced welding personnel. Experiments using the predicted welding parameters from the developed system proved the feasibility of interface standards and intelligent control technology to increase productivity, improve quality, and reduce the cost of system integration.

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A Study on the Selection of Slack Bus at Application of Marginal Loss-Factor in a Competitive Electricity Market (경쟁적 전력시장에서 한계손실계수 적용시 기준모선 선정에 대한 연구)

  • Kim, Sang-Hoon;Lee, Kwang-Ho
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.58 no.2
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    • pp.264-269
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    • 2009
  • Marginal Loss Factor(MLF) is represented as the sensitivity of transmission loss, which is computed from the change of the generation at slack bus by the change of the load at the arbitrary bus. The MLF dependent on the selection of slack bus is one of the key factors affecting nodal pricing, Genco's profits, social welfare(SW) and Nash Equilibrium in a competitive electricity market. This paper addresses the methodology of slack bus selection by using Cournot model of Cost Based Pool market. Numerical results from sample cases show that the slack bus of MLF of the highest average is beneficial from the view points of SW.

Differential Evolution with Multi-strategies based Soft Island Model

  • Tan, Xujie;Shin, Seong-Yoon
    • Journal of information and communication convergence engineering
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    • v.17 no.4
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    • pp.261-266
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    • 2019
  • Differential evolution (DE) is an uncomplicated and serviceable developmental algorithm. Nevertheless, its execution depends on strategies and regulating structures. The combination of several strategies between subpopulations helps to stabilize the probing on DE. In this paper, we propose a unique k-mean soft island model DE(KSDE) algorithm which maintains population diversity through soft island model (SIM). A combination of various approaches, called KSDE, intended for migrating the subpopulation information through SIM is developed in this study. First, the population is divided into k subpopulations using the k-means clustering algorithm. Second, the mutation pattern is singled randomly from a strategy pool. Third, the subpopulation information is migrated using SIM. The performance of KSDE was analyzed using 13 benchmark indices and compared with those of high-technology DE variants. The results demonstrate the efficiency and suitability of the KSDE system, and confirm that KSDE is a cost-effective algorithm compared with four other DE algorithms.

Research of Governor free Respose calculated by power system contribution (계통기여도를 반영한 주파수추종운전 성능 평가에 관한 연구)

  • Byun, Sung-Hyun;Sin, Jung-Sun;Rju, Hyun-Keun;Jeon, Young-Hwan
    • Proceedings of the KIEE Conference
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    • 2007.07a
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    • pp.52-53
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    • 2007
  • 현 CBP(Cost Based Pool)에서 주파수조정은 전기품질유지와 전력계통 안정성 확보에 절대적으로 필요한 계통운영보조서비스의 항목이다. 이는 해외 전력계통에서도 예외없이 채택하여 적용하고 있으며 적극적인 참여를 유도하기 위하여 다양한 비용보상 방안을 시행하고 있다. 순시 주파수조정은 발전기 조속기 특성에 따라 다양한 출력응동특성을 가지고 있으며 이에 따라 계통에 기여하는 바도 달라지게 된다. 따라서 주파수조정에 참여하는 발전기의 계통기여도에 따른 주파수추종운전 능력에 대한 평가를 계량화할 수 있는 방법이 요구된다.

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A study on the capacity payment in cost based pool (비용기반 전력시장에서의 용량요금 산정방안에 관한 연구)

  • Han, Seok-Man;Lee, Cheon-Ho;Shin, Hye-Kyung;Chung, Koo-Hyung;Kang, Dong-Joo;H.Kim, Bal-Ho
    • Proceedings of the KIEE Conference
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    • 2007.07a
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    • pp.111-112
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    • 2007
  • This paper presents the capacity payment in electricity power markets. The capacity payment (CP) needs to recover fixed costs. But most CP is allocated by energy policy. So, this paper analysis CP using capacity proportion and Reliability Pricing Model (RPM). The capacity proportion method uses base capacity price and supply available capacity. The RPM method uses value of each region and operation attribute of each generator.

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