• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 A
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• pp.745-747
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• 2005

After restructuring electricity industry, national long term electricity plans moved to "Basic plan of electricity supply and demand" from "Long term power development plan". The main point is a change of path from plan of power development at national level to plan of electricity supply and demand at company level. A proposal by generation company is surveyed and reflected to the basic plan of electricity supply and demand. The second plan shows over 40% reserves in result of the proposals. It is the time to evaluating the proposal which covers market function in the basic plan of electricity supply and demand at the stage of market change. This research presents the need of evaluation of proposals and the methods of evaluation. Also it presents the alternative planning procedure to reflecting the evaluation methods.

• 전기학회논문지
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• 제57권8호
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• pp.1342-1348
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• 2008

One important objective of the electricity market is to decrease the price by ensuring stability in the market operation. Interconnected to this is another objective; namely, to realize sustainable consumption of electricity by equitably distributing the effects and benefits of participating in the market among all participants of the industry. One method that can help achieve these objectives is the ^{(R)}$demand-response program, - which allows for active adjustment of the loadage from the demand side in response to the price. The demand-response program requires a customer baseline load (CBL), a criterion of calculating the success of decreases in demand. This study was conducted in order to calculate undistorted CBL by analyzing the correlations between such external or seasonal factors as temperature, humidity, and discomfort indices and the amounts of electricity consumed. The method and findings of this study are accordingly explicated.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2000년도 하계학술대회 논문집 A
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• pp.289-291
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• 2000

In a competitive electricity power market, the price of electricity changes instantly, that of conventional market is predetermined and hardly changes. In such a new environment, customers' behaviors change instantly according to the changing electricity prices. If we develop a electricity load model that well describes the behavior of electricity consumers, we can utilize that model in forecasting the amount of future load, solving the load flow problem and finding the weak point of the system. In this paper new electricity model that considers the price of electricity and power factor of the load is presented. While conventional load model, which is demand function of electricity, uses the price of real and reactive power as the independent variable of the demand function. this new load model uses price of real power and penalty factor according to the power factor for the calculation of amount of electricity demand.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.1379-1383
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• 2005

Introducing the market into the electricity industry lets the multiple participants get into new competition. These multiple participants of the market need new business strategies for providing value added services to customer. Therefore they need the accurate customer information about the electricity demand. Demand characteristic is the most important one for analyzing customer information. In this study load profile data, which can be collected through the Automatic Meter Reading System, are analyzed for getting demand patterns of customer. The load profile data include electricity demand in 15 minutes interval. An algorithm for clustering similar demand patterns is developed using the load profile data. As results of classification, customers are separated into several groups. And the representative curves for the groups are generated. The number of groups is automatically generated. And it depends on the threshold value for distance to separate groups. The demand characteristics of the groups are discussed. Also, the compositions of demand contracts and standard industrial classification in each group are presented. It is expected that the classified curves will be used for tariff design, load forecasting, load management and so on. Also it will be a good infrastructure for making a value added service related to electricity.

• 전기학회논문지
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• 제66권1호
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• pp.16-22
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• 2017

In order to reduce costs of electricity energy at periods of peak demand, there has been an exponential interest in Demand Response (DR). This paper discusses the effect on the participants' behavior in response to DR. Under the assumption of perfect competition, the equilibrium point of the electricity market with DR is derived by modeling a DR curve, which is suitable for microeconomic analysis. Cournot model is used to analyze the electricity market of imperfect competition that includes strategic behavior of the generation companies. Strategic behavior with DR makes it harder to compute equilibrium point due to the non-differential function of payoff distribution. This paper presents a solution method for achieving the equilibrium point using the best response function of the strategic players. The effect of DR on the electricity market is illustrated using a test system.

• 전기학회논문지
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• 제59권12호
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• pp.2143-2149
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• 2010

Market price and curtailment amounts of the Demand Resource Market(DRM) are determined by competition between electricity consumers. An important aspect of the DRM involves the assessment of strategic behavior of participants for maximizing their profits. This paper presents economic equilibrium models for simulating imperfect competition among electricity consumers in the DRM and analyzes the models at Nash Equilibrium of Game Theory. The proposed demand functions and supply functions of DRM are based on the Demand Resource Market Rules in Korean electricity market. Simulation results show that the models are adequate for obtaining Nash Equilibrium of consumers' competitive curtailment.

• 자원ㆍ환경경제연구
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• 제22권2호
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• pp.251-279
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• 2013

석유제품은 1997년 이후 석유가격자유화가 시행됨에 따라 1990년대 중반을 기점으로 규제가격에서 시장가격으로 전환된 반면, 전력은 계속 규제가격으로 남아 있다. 이러한 가격규제제도의 차이는 최근에 관찰되고 있는 석유와 전력의 수요행태의 차이, 즉 전력수요의 지속적 증가와 석유소비 정체를 가져온 주요 요인으로 볼 수 있다. 이를 확인하기 위하여 본고에서는 석유제품과 전력의 수요추정식을 바탕으로 1981년부터 2011년 사이 월별 데이터를 10년의 표본기간으로 나누어 1년씩 이동시키는 이동회귀분석(rolling regression)을 통해 탄력성의 변화를 추적했고, 다음과 같은 결과를 확인할 수 있었다. 첫째, 1990년대 중반 이후 휘발유와 경유의 가격탄력성은 더 탄력적으로 변화한 반면, 가정용과 산업용 전력의 가격탄력성은 오히려 더 비탄력적으로 변화하였다. 둘째, 생산(소득)탄력성의 경우에는 석유제품과 전력에서 뚜렷한 패턴차이를 보이지 않고 있으며, 1990년대를 기준으로 나눈 시기별로도 특이한 변화가 나타나지도 않고 있다. 셋째, 휘발유와 경유 간에만 교차탄력성이 유의적으로 추정되었으며, 1990년대 중반 이전에는 휘발유의 교차탄력성이 의미를 가지는 반면, 1990년대 중반 이후에는 경유의 교차 탄력성이 의미를 가지는 것으로 나타났다.

• 대한전기학회논문지:전력기술부문A
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• 제54권8호
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• pp.418-428
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• 2005

In this paper, a new probabilistic generation modeling method which can address the characteristics of changed electricity industry is proposed. The major contribution of this paper can be captured in the development of a probabilistic generation modeling considering generator maintenance outage and in the classification of market demand into multiple demand clusters for the applications to electricity markets. Conventional forced outage rates of generators are conceptually combined with maintenance outage of generators and, consequently, effective outage rates of generators are newly defined in order to properly address the probabilistic characteristic of generation in electricity markets. Then, original market demands are classified into several distinct demand clusters, which are defined by the effective outage rates of generators and by the inherent characteristic of the original demand. We have found that generators have different effective outage rates values at each classified demand cluster, depending on the market situation. From this, therefore, it can be seen that electricity markets can also be classified into several groups which show similar patterns and that the fundamental characteristics of power systems can be more efficiently analyzed in electricity markets perspectives, for this classification can be widely applicable to other technical problems in power systems such as generation scheduling, power flow analysis, price forecasts, and so on.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2000년도 하계학술대회 논문집 A
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• pp.388-390
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• 2000

The production of electricity and the pattern of consumption in competitive electricity market are changing. The price of electric power in spot market will be varied by the economic electricity availability of generation utilities and electricity consumers. DSM(demand-side management) is a method which provides simultaneously economics to utilities and consumers as main participants in electricity market. In this paper, it is argued that the effect of DSM in competitive electricity market for consumers, generation utilities, and transmission utilities.

• 에너지공학
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• 제22권1호
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• pp.1-7
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• 2013

본 논문에서는 전국 521가구를 대상으로 조사한 횡단면 자료를 분석에 이용하여 주택용 전력의 수요함수를 추정하고자 한다. 주택용 전력의 수요함수는 수용가의 전력 수요행태에 대한 정보를 제공하여 가격과 같은 주요 정책변수의 효과를 사전적으로 진단하는 데, 그리고 수요예측을 하는 데 유용하게 활용된다. 수요함수의 모수에 대한 강건한 추정치를 얻기 위해 오차항의 분포에 있어서 동분산 및 정규성의 가정을 하지 않는 최소절대편차 추정량을 사용하였다. 가격탄력성 및 소득탄력성은 각각 -0.68 및 0.14로 추정되었으며 유의수준 10%에서 통계적으로 유의하였다. 가격탄력성 및 소득탄력성은 모두 가격 및 소득 변화에 비탄력적인 주택용 전력수요의 특징을 잘 보여주고 있다. 이는 주택용 전력이 필수적인 재화로서 가격이 변동된다고 해서 급격하게 수요를 조정하기 어려우며 소득이 변동된다고 해서 수요가 빠르게 조정되지 않음을 시사한다.