• Title/Summary/Keyword: Electric Market

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Heat-Electric Power Ratio Optimization To Maximize Profit of a Cogeneration Power Plant (열병합 발전기 수익 극대화를 위한 열전비 최적화)

  • Kim, Gun-Hoe;Lee, Jae-Heon;Moon, Seung-Jae;Chang, Taek-Soon
    • 한국전산유체공학회:학술대회논문집
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    • 2008.03b
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    • pp.381-384
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    • 2008

  • This paper presents an operational technique to maximize profit of a cogeneration power plant. To minimize errors in a loss and gain analysis of a cogeneration power plant, the energy sale profit in the cost-based-pool electric power trade market, the heat sale profit, and the supplementary fund profit for electric power industry are taken into consideration. The objective is to optimize the heat-electric power ratio to maximize profit of a cogeneration power plant. Furthermore, the constrained bidding technique to optimize heat-electric power ratiocan be obtained. Profits from of a cogeneration power plant are composed of three categories, such as the energy sale profit in the cost-based-pool electric power trade market, the heat sale profit, and the supplementary fund profit for electric power industry. Profits of a cogeneration power plant are varied enormously by the operation modes. The profits are mainly determined by the amount of constrained heat generation in each trading time. And the three profit categories arecoupled tightly via the heat-electric power ratio. The result of this case study can be used as a reference to a cogeneration power plant under the power trading system considered in this case.

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Prospects of Japan's Electronic Vehicle Market: An Analysis Through Toyota Motors' Hybrid Vehicle Deployment (도요타의 하이브리드 자동차 보급 사례 분석을 통한 일본 전기자동차 시장에 대한 전망)

  • Ko, Woo Li;Kim, Kyunghwan
    • Journal of East Asia Management
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    • v.5 no.1
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    • pp.75-90
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    • 2024

  • About 100 years after the start of mass production by American car maker Ford in 1913, the automobile industry has come to a major transformation in 100 years. In this transformation period, automakers are facing the biggest challenge of converting power sources, the basis of automobiles, from existing internal combustion engines to electric vehicles. Hybrid vehicles have been released in Japan since the late 1990s, and changes in automobile power sources have occurred early. In order to gain global leadership in hybrid vehicles, Japanese automakers and the Japanese government joined forces to promote the growth of the domestic hybrid vehicle market. The government has implemented a policy to substantially subsidize the high price of hybrid cars compared to internal combustion engine cars by providing purchase subsidies and tax benefits to buyers. Toyota has increased its line-up of hybrid cars around the Prius and has further strengthened communication with customers for the sale of hybrid vehicles. As a result of continuing these efforts for about 20 years, the percentage of Japan's hybrid vehicle market in 2022 reached 51% for passenger cars. Recently, each country has been setting and promoting aggressive goals for electric vehicles that require a wider range of physical and institutional infrastructure than hybrid vehicles. This study aims to assess the growth of electric vehicles by looking at the trend of hybrid vehicles and how they've been distributed in the Japanese market.

  • https://doi.org/10.22906/JEAM.2024.5.1.75 인용 PDF

Modeling New Generation Expansion Planning Problems for Applications in Competitive Electric Power Industries (전력시장에 적용 가능한 새로운 전원개발계획문제 모델링)

  • 김진호;박종배;박준호
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.53 no.9
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    • pp.521-528
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    • 2004

  • The demise of the native franchise markets and the emergence of competitive markets in electricity generation service is substantially altering the way that operation and planning activity is conducted and is making it increasingly difficult for market participants such as generation firms to prospect the future electricity markets. Traditional generation expansion planning (GEP) problems which centrally determine the least-cost capacity addition plan that meets forecasted demand within pre-specified reliability criteria over a planning horizon (typically 10 to 20 years) is becoming no more valid in competitive market environments. Therefore, it requires to develop a new methodology for generation investments, which is applicable to the changed electric industry business environments and is able to address the post-privatization situation where individual generation firms seek to maximize their return on generation investments against uncertain market revenues. This paper formulates a new generation expansion planning problem and solve it in a market-oriented manner.

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The Investor's Behavior in Competitive Korean Electricity Market

  • Ahn, Nam-Sung;Kim, Hyun-Shil
    • Korean System Dynamics Review
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    • v.6 no.2
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    • pp.25-35
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    • 2005

  • This paper describes the mechanism for new investment to appear in waves of boom and bust causing alternative periods of over and under supply of electricity in Korean market. A system dynamics model was developed to describe the dynamic behavior of new investment in Korean market. The simulation results show the boom and bust cycle in the new investments. When the market price is high, investors decide to build new power plants. However, it takes some delay time to complete new power plants. When the new power plants are being added into the grid, the supply increases and the wholesale price begins to decrease. This causes the cancellation of new power plant or delay the construction. This mechanism causes the boom and bust cycle in new investment.

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