• 제목/요약/키워드: Customer outage cost

검색결과 10건 처리시간 0.056초

전력에너지 공급지장비의 충격도지수 함수개발 및 WOROCAIS를 이용한 이의 추정에 관한 연구 (Development of Outage Cost Impact Index Function of Electricity Energy and Outage Cost Assessment using WOROCAIS)

  • 임진택;최재석;전동훈;서철수;이재걸
    • 전기학회논문지
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    • 제62권8호
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    • pp.1066-1073
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    • 2013
  • This paper illustrates newly an outage cost impact index function(OCIIF). The assessment of the OCIIF is described using the Web Based Online Real-time Outage Cost Assessment and Information System(WOROCAIS) for power system outage cost assessment in Korea. The proposed OCIIF is not absolute but relative outage cost impact index function in view point of outage time using web based survey method for outage cost assessment. While conventional methodology does not consider short time outage cost assessment, the proposed OCIIF reflects short time outage. SCOF(Sector Customer Outage Function) in stead of the traditional SCDF(Sector Customer Damage Function) is defined and proposed newly in this paper. Based the SCOF, AVLL(Average Value of Loss Load) is newly proposed. The OCIIF is demonstrated by WOROCAIS in case study around 2,000 sample data surveyed by KEPCO in South Korea in recent.

Assessment of Reliability in the Distribution System of an Industrial Complex

  • Choi, Sang-Bong
    • Journal of Electrical Engineering and Technology
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    • 제2권2호
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    • pp.201-207
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    • 2007
  • As the power industry moves towards open competition, there has been a need for methodology to evaluate distribution power system reliability by using customer interruption costs, particularly in power supply zones under the competitive electricity market. This paper presents an algorithm to evaluate system average interruption duration index, expected energy not supplied, and system outage cost taking into consideration failure rate of the distribution facility and industrial customer interruption cost. Also, to apply this algorithm to evaluate system outage cost presented in this paper, the distribution arrangement of a dual supply system consisting of mostly high voltage customers in an industrial complex in Korea is used as a sample case study. Finally, evaluation results of system interruption cost, system average interruption duration index, and expected energy not supplied in the sample industrial complex area are shown in detail.

A Study on Optimal Reliability Criterion Determination for Transmission System Expansion Planning

  • Tran Trungtinh;Choi Jae-Seok;Jeon Dong-Hoon;Chu Jin-Boo;Thomas Robert;Billinton Roy
    • KIEE International Transactions on Power Engineering
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    • 제5A권1호
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    • pp.62-69
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    • 2005
  • The optimal design of transmission system expansion planning is an important part of the overall planning task of electric power system under competitive electricity market environments. One of main keys of the successful grid expansion planning comes from optimal reliability level/criteria decision, which should be given for constraint in the optimal expansion problem. However, it's very difficult to decide logically the optimal reliability criteria of a transmission system as well as generation system expansion planning in a society. This paper approaches a methodology for deciding the optimal reliability criteria for an optimal transmission system expansion planning. A deterministic reliability criteria, BRR (Bus Reserve Rate) is used in this study. The optimal reliability criteria, BRR/sup */, is decided at minimum cost point of total cost curve which is the sum of the utility cost associated with construction cost and the customer outage cost associated with supply interruptions for load considering bus reserve rate at load buses in long term forecasting. The characteristics and effectiveness of this methodology are illustrated by the case study using IEEE-RTS.

산업단지내 배전계통의 공급신뢰도 및 정전비용 평가 (Evaluation of Reliability and Interruption Cost of Distribution Power System in Industrial Complex)

  • 최상봉;남기영;김대경;정성환;류희석;이재덕
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2006년도 제37회 하계학술대회 논문집 A
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    • pp.95-96
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    • 2006
  • As the power industry moves towards open competition, there has been a call for methodology to evaluate distribution power system reliability by using customer interruption costs. Accordingly, it is increased for methodology to evaluate distribution power system reliability in power supply zones under competitive electricity market. This paper presents algorithm to evaluate system average interruption duration index. expected energy not supplied and system outage cost taking Into consideration failure rate of distribution facility and industrial customer interruption cost. Also, to apply this algorithm to evaluate system outage cost presented in this paper, distribution system of a dual supply system consisting of mostly high voltage customers in industrial complex in Korea is used as a sample case study. Finally, evaluation results of system interruption cost, system average interruption duration index and expected energy not supplied in sample industrial complex area are shown in detail.

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송전계통확충계획을 위한 확률론적 최적신뢰도 기준설정에 관한 연구 (A Study on Probabilistic Optimal Reliability Criterion Determination in Transmission System Expansion Planning)

  • 트란트룽틴;권중지;최재석
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2005년도 제36회 하계학술대회 논문집 A
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    • pp.748-750
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    • 2005
  • This paper approaches a methodology for deciding the optimal reliability criteria for an optimal composite power system expansion planning considering generation and transmission systems simultaneously. A probabilisticreliability criterion, $LOLE_R$(Loss of Load Expectation), is used in this study. The optimalreliability criterion $LOLE_R*$ is decided at minimum cost point of total cost curve which is the sum of the utility cost associated with construction cost and the customer outage cost associated with supply interruptions for load considering forced outage rates of elements(generators and lines) in long term forecasting. The characteristicsand effectiveness of this methodology are illustrated by the case study using MRBTS size system.

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A Study on Reliability Differentiated Pricing of Firm Capacity

  • Kim, Balho H.
    • Journal of Electrical Engineering and Technology
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    • 제8권1호
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    • pp.40-45
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    • 2013
  • It is known that Reliability Differentiated Pricing (RDP) can improve the efficiency and benefits of consumers and producers. This paper examines the long-run social welfare maximization problem of the utility and presents a long-term reliability differentiated prices for firm capacity, based on customer outage costs. Then the applicability of the proposed pricing scheme is verified with a case study.

정전비용과 신뢰도 분석을 통한 분할 개폐기의 적정 자동화율 도출 알고리즘에 관한 연구 (Study on the algorithm for the Reasonable Switch Automation Rate with Customer Interruption Cost and Reliability Evaluation)

  • 채희석;신희상;조성민;문종필;김재철
    • 전기학회논문지
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    • 제62권4호
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    • pp.467-473
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    • 2013
  • The addition of disconnect switches to a distribution feeder or the replacement of the manual switches with the automatic switches do, in general, increase reliability by decreasing the duration of the outage of many to the customers on the feeder and reducing the outage section. However, the improvement of reliability in power distribution system causes an increase of the investment cost, for example, replacement costs, labor costs, and so on. For this reason - the balance between investment and reliability improvement - many studies about the appropriate level of investment have been conducted. In this paper, we suggest the algorithm for determining the reasonable switch automation rate in the power distribution system. We evaluate the customer interruption cost and reliability for several cases - these cases relate with the switch automation rate - in the domestic metropolitan power distribution system, estimate the effectiveness of changing the manual switch to automatic switch quantitatively. These results can help the determining on the disconnect switch's automation rate.

웹기반 온라인 실시간 공급지장비용추정 정보시스템의 기초개발 (Basic Web Based Online Real-time Information System for Outage Cost Assessment)

  • 오태곤;조경희;임진택;최재석;전동훈;정호진;송태호
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2011년도 제42회 하계학술대회
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    • pp.359-360
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    • 2011
  • This paper proposes a Web Based Online Real-time Information System for Outage Cost Assessment. This system developed in this study is just only prototype as previous stage but no commercial system. Using this system, the evaluation of reliability worth is the customer cost associated with a loss of supply may be assessed and the information will be serviced online real time on smart phone.

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A Study on Optimal Planning Strategy Based on Customer Outage Costs

  • Kim, Bal-Ho H.
    • Journal of Electrical Engineering and Technology
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    • 제5권1호
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    • pp.21-27
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    • 2010
  • This paper examines the long-run social welfare maximization problems facing public utilities, which includes consideration of the cost of capital or other fixed costs of production, from which it derives optimal investment decisions in a reliability differentiated pricing based market. Reliability differentiated pricing policies lead to straightforward mathematical results on optimal investment decisions in generation and transmission expansion planning. This paper presents the mathematical conditions for optimal investment decisions.

미시적 접근법에 의한 평균 공급지장비용단가 산정 방법론 연구-II (A Study on Methodology of Average Interrupted Energy Assessment Rate using Micro Approach-II)

  • 오태곤;임진택;최재석;전동훈;이병성
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2011년도 제42회 하계학술대회
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    • pp.357-358
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    • 2011
  • A major element in the evaluation of reliability worth is the customer cost associated with a loss of supply. This paper proposes a new methodology to estimate the IEAR(Interrupted energy assessment rate) based on expectation value of outage time by using micro approach. The case study in this paper was performed on the basis of the survey data which had been conducted in a previous research.

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