• Title, Summary, Keyword: electricity industry

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The Effects of Ownership, Regulation and Marked Structure on the Pricing: Evidence from the U.S. Electricity and Natural Gas Industries (소유구조, 규제 및 시장구조가 가격에 미치는 영향에 관한 연구: 미국의 전력산업과 천연가스산업을 중심으로)

  • Kim, Dae-Wook
    • Environmental and Resource Economics Review
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    • v.17 no.4
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    • pp.751-774
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    • 2008
  • In this paper, we examine the institutional prices differences in the electricity and natural gas industries using unbalanced panel data from 1999 to 2001. The changing market structures following deregulation in both markets allow us to examine the institutional prices differences by ownership type, market structure and merger activities. Estimating the reduced form, after controlling both intrinsic characteristic (marginal costs) and external factors (demand), allows us to identify the extent to which specific factors are correlated with the price. Furthermore it allows us to identify systematic institutional price differences in both electricity and natural gas markets. Our estimation results suggest that the private firms in electricity markets are associated with higher prices than public firms after controlling for demand and cost. We further find that dual-product firms in the natural gas industry and the electricity industry are associated with lower rates than single product firms. These results provide a weak evidence of economies of scope in the dual-product firms. Our results finally suggest that merger activities in natural gas markets are associated with higher rates.

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Development of Functional Pulp Tray for Prevention of Static Electricity (정전기 방지를 위한 기능성 펄프 트레이 개발)

  • Lee, Ji-Young;Kim, Chul-Hwan;Nam, Hye-Gyeong;Park, Hyeong-Hun;Kwon, Sol;Lee, Young-Min
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.47 no.5
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    • pp.52-60
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    • 2015
  • Static electricity is an imbalance of electric charges within or on the surface of a material. All packed items that are particularly sensitive to static discharge must be protected by antistatic treatment. Otherwise, static electricity generated by an electrical insulator may cause serious damages to some sensitive electronics. In order to remove or prevent a buildup of static electricity, packed items must be treated with the application of an antistatic agent, which helps any excess charge to be evenly distributed. Functional pulp tray used for packing of electronic goods was developed with application of an antistatic agent. As the concentration of the antistatic agent increased, charging voltage and surface resistance of molded pulps decreased. The increase of humidity in surrounding atmosphere around molded pulps led to the decrease of accumulation of static charges. In conclusion, the surface treatment of the antistatic agent not only reduced or eliminated buildup of static electricity in the surface, but also prevented generation of tiny dirts from molded tray.

A study of the effect on variable generation cost by the variation of $CO_2$ emission trading price ($CO_2$ 거래비용 변화에 따른 발전원가(변동비) 영향 분석)

  • Jung, Young-Beom;Lee, Young-Eal;Yoon, Yong-Beum
    • Proceedings of the KIEE Conference
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    • pp.822-823
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    • 2007
  • It is easily can be expected that Korea cannot be free under the regulation, because Korea is one of the major $CO_2$ emitter in the world. Even though Korea currently doesn't have any obligation to mitigate the carbon emission, power industry needs to study the effect of that. this paper aims to analyze the change of economic loading order for generation dispatch by various carbon price, looking at each plant's or generator's variable generation cost per unit electricity(kWh) that consists of basic generation price calculated by automatic generation system planning model, WASP 4.0, and $CO_2$ price per unit electricity generation.

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An Explicit Column Generation Algorithm for the Profit Based Unit Commitment Problem in Electric Power Industry (전력산업에서의 Profit-Based Unit Commitment Problem 최적화를 위한 명시적 열생성 알고리즘)

  • Lee, Kyung-Sik;Song, Sang-Hwa
    • IE interfaces
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    • v.20 no.2
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    • pp.186-194
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    • 2007
  • Recent deregulation of Korean electricity industry has made each power generation company pay more attention to maximizing its own profit instead of minimizing the overall system operation cost while guaranteeing system security. Electricity power generation problem is typically defined as the problem of determining both the on and off status and the power generation level of each generator under the given fuel constraints, which has been known as Profit-Based Unit Commitment (PBUC) problem. To solve the PBUC problem, the previous research mostly focused on devising Lagrangian Relaxation (LR) based heuristic algorithms due to the complexity of the problem and the nonlinearity of constraints and objectives. However, these heuristic approaches have been reported as less practical in real world applications since the computational run time is usually quite high and it may take a while to implement the devised heuristic algorithms as software applications. Especially when considering long-term planning problem which spans at least one year, the complexity becomes higher. Therefore, this paper proposes an explicit column generation algorithm using power generation patterns and the proposed algorithm is successfully applied to a Korean power generation company. The proposed scheme has a robust structure so that it is expected to extend general PBUC problems.

NUCLEAR vs COAL ELECTRICITY GENERATION IN CANADA

  • Kugler G.
    • Nuclear industry
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    • v.5 no.11
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    • pp.39-45
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    • 1985
  • In some parts of Canada, such as Ontario, the choice between nuclear and coal is clear : the economics, environmental, and public health effects all favour nuclear. It is recognized that the economics of coal depend largely on the price of coal, which in

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Domestic current situation and Improvement plan Consideration of Electricity Design&Supervision System (전기설계.감리제도의 국내.외 현황 및 개선방안 고찰)

  • Nam, Gi-Beom;Lee, Jong-Hyeok;Jeon, Yeong-SU;Yang, Sun-Sik
    • Proceedings of the KIEE Conference
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    • pp.14-18
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    • 2005
  • The Reason of collapse accidents, Seongsu bridge Accident in 1994 and Sampung department store Accident in 1995 and so on, that is found out to the shortage construction. Consequently, depending on orderer's self-regulating judgement the meanwhile, Electricity Technique Administration Law in 1995 owes at the public opinion to need the plan of a law system device about the electricity design and supervision and is born. This various issue problem, the combined ordering with Constructing, Electricity, fire-fighting, Information & Communication and so on, field problem, low cost services, the problem about the selection procedure of the design and supervision businessman, the business range between general and specialized, which the system appears as are carried out have been risen. Therefore basic solution plan about this have been desired. We consider a domestic current situation about an electricity design supervision system in this paper, and try to present the plan for healthy upbringing development of the electricity industry through this.

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Probabilistic Generation Modeling in Electricity Markets Considering Generator Maintenance Outage (전력시장의 발전기 보수계획을 고려한 확률적 발전 모델링)

  • Kim Jin-Ho;Park Jong-Bae
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.54 no.8
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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.

LMDI Decomposition Analysis for Electricity Consumption in Korean Manufacturing (LMDI 요인 분해분석을 이용한 우리나라 제조업 전력화 현상에 관한 연구)

  • Han, Joon
    • Journal of Energy Engineering
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    • v.24 no.1
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    • pp.137-148
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    • 2015
  • So far, the phenomenon of "electrification" has been deepened in Korean industry and especially direct heating energy which accounted for 44.0%(2010) of total energy consumed in Korean manufacturing has been significantly electrified. This paper decomposed electricity consumption for direct heating in Korean manufacturing from 1992 to 2012 using LMDI(Log Mean Divisia Index). This paper includes 4 different factors such as electricity proportion effect, direct heating proportion effect, energy intensity effect and added value effect. And this paper compared the consumption pattern by business type. As results, electricity proportion effect had contributed the most to the increase of electricity consumption for direct heating in Korean manufacturing. And Petrol-Chemical and Iron & Steel had the most electrification of direct heating.

Bidding Strategics in Competitive Electricity Market (경쟁시장에서 입찰전략 수립에 관한 연구)

  • Ko, Young-Jun;Lee, Hyo-Sang;Shin, Dong-Jun;Kim, Jin-O
    • Proceedings of the KIEE Conference
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    • pp.550-552
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    • 2001
  • The vertically integrated power industry was divided into six generation companies and one market operator, where electricity trading was launched at power exchange. In this environment, the profits of each generation companies are guaranteed according to utilization of their own generation equipments. Especially, the electricity demand shows seasonal and weekly regular pattern, which the some capacity should be provided into ancillary service based on the past demand forecasting error and operating results of electricity market. Namely, if generation cost function is applied to SMP and BLMP as announced the previous day, the available generation capacity of the following day could be optimally distributed, and therefore contract capacity of ancillary service applied to CBP(Cost Based Pool) and TWBP(Two-Way Bidding Pool) is determined. Consequently, it is Possible to use the retained equipments optimally. This paper represents on efficient bidding strategies for generation equipments through the calculation of the contract and the application of each generator cost function based on the past demand forecasting error and market operating data.

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A Comparative Welfare Analysis on the Trading System in an Electricity Market by Using Game Theory (게임이론을 적용한 전력시장 전력거래방식의 후생 측면 비교 연구)

  • 이광호
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.52 no.10
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    • pp.616-623
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    • 2003
  • Competition among electric generation companies is a major goal of restructuring in the electricity industry, The trading system in an electricity market has been one of the most important issues in deregulated electricity market. This paper deals with comparisons of the major two types of the trading system: compulsory pool market and bilateral contract market. The two trading systems are compared quantitatively from the viewpoint of consumer's surplus and social welfare, This paper, also, proposes a unified model of Cournot and Bertrand for analyzing the mixed trading system of pool market and bilateral contract market. Nash equilibrium of the unified model is derived by criteria for participating in bilateral contract market. Numerical results from a sample case show that a mixed trading system of pool market and price-competitive bilateral market is beneficial to consumer from the view points of consumer's surplus.