• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2003년도 하계학술대회 논문집 A
• /
• pp.148-150
• /
• 2003

A meaning of power quality has changed, which affects on an environmental change of existing electricity supply markets. Today, it should take both consumers and suppliers into consideration to develop information and communication technology and to increase the use of power and electronic equipments. As a result, it is necessary to develop a system to monitor power quality and to display data. In this paper, a system, as a power quality monitoring equipment, which can use protective replays with progress of microprocessor technology and provide information in the intranet/internet circumstances using web-based architecture is described.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2004년도 하계학술대회 논문집 A
• /
• pp.707-709
• /
• 2004

Transmission pricing is one of important issues related to competitive electricity markets since rational pricing scheme ensures a fair competition between the market participants. Any application of marginal pricing method to transmission pricing may accompany revenue reconciliation to recover Transco's revenue requirements. This paper presents an alternative methodology on revenue reconciliation with customer benefit function and power flow.

• KIEE International Transactions on Power Engineering
• /
• 제5A권3호
• /
• pp.300-302
• /
• 2005

We employ a new technique to account for extreme values when using the generalized autoregressive conditionally heteroskedastic (GARCH) methodology to forecast day-ahead electricity prices in New York City.

• 전기학회논문지
• /
• 제56권9호
• /
• pp.1535-1542
• /
• 2007

HTS (High Temperature Superconducting) Power devices has the several useful characteristics from the technical and economical viewpoint. Possible application to the utility industry have been widely discussed in various research projects. For the successful introduction of HTS power devices into power system, establishing a proper R&D and marketing strategies through estimating the future market size are necessary. However, quantitative estimates of how well HTS power devices will serve their markets have been lacking. In this paper, we propose a estimation methodology of future market size for HTS power divices such as cable, transformer, generator, and motor, and also evaluate the future international and domestic market size by using proposed methodology.

• 대한전기학회논문지:전력기술부문A
• /
• 제52권5호
• /
• pp.287-293
• /
• 2003

The deregulation and structural reform of power markets have started from the early 90s, which has brought about new studies on the new environment. Regardless the market structure, however, power systems need to be operated and planned in a stable and reliable manner. Therefore, decisions on proper amount of operating reserves and their reliable operations are very important. Up to now, the decision processes of operating reserves depend mainly on experiences of operators in Korea. When Korean power market comes under private management, operating reserves would influence power rate as well as power Quality, Therefore, it is time to prepare reasonable operating reserve standards in a systematic way for the new environment. This study suggests the proper operating reserve standards considering rules of the power market in Korea. To verify the adequacy of the proposed standards, stability and frequency characteristics of the Korean power system are analyzed as well.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2003년도 추계학술대회 논문집 전력기술부문
• /
• pp.291-293
• /
• 2003

Energy markets of the Northeast Asia countries and in particular South Korea are perspective enough from the standpoint of export of energy resources from Russia. South Korea Power System has been rapidly growing. However, recently it has been confronted with difficulties in regard to constructing new Power Stations and especially Hydro Power Plants. Therefore it is mutually beneficial to build electric tie to South Korea in order to use highly effective Power of Northeast Asia. In this paper, we describe the maximum available transmission power through interconnected line without loss of stability in power system. For this simulation, the AC transmission system is assumed appropriate for this preliminary study. The transmission system will pass through territory of North Korea and connect to 765 kV Network near Seoul with long distance.

• 자원ㆍ환경경제연구
• /
• 제21권2호
• /
• pp.301-319
• /
• 2012

2012년부터 RPS 제도가 시행됨에 따라 신재생에너지 분야에서의 투자가 활발히 이루어질 것으로 예상된다. 신재생에너지를 통한 기업의 온실가스 감축투자는 장기적으로 기술진보와 국내 전력가격에도 영향을 미치는 중요한 요소이다. 한편, 국내에 온실가스 감축정책 수단으로 배출권거래제가 논의 중인 바, 유사한 성격의 두 제도가 기업의 환경투자 의사결정에 미치는 영향을 분석하도록 한다. 투자의 비가역성과 배출권 및 REC 가격의 불확실성을 고려하는 실물옵션 모형을 이용하여, 게이트웨이의 설정을 통한 배출권과 REC의 호환성이 보장될 때에 투자 인센티브를 분석하였다. 환경투자를 통해 온실가스 감축이 충분히 클 경우에는 투자에 대한 게이트웨이의 긍정적인 효과가 확인되는 것으로 나타났다. 신재생에너지 투자효과에 대한 보다 엄밀한 분석을 위하여 향후 발전사 데이터의 구축을 통해 실증분석이 추가로 이루어져야 할 것이다.

• 한국보건간호학회지
• /
• 제34권3호
• /
• pp.355-367
• /
• 2020

Purpose: This study aims to identify factors influencing the health-related quality of life among women merchants at traditional markets. Methods: Participants in this cross-sectional descriptive study included 121 women merchants. Data were collected from May 01 to June 30, 2019 using the patient health questionnaire-9 (PHQ-9), psychosocial well-being index-short form (PWI-SF), subjective health status, and HRQoL. Selected data were analyzed using descriptive statistics, Pearson's correlation coefficient, and stepwise multiple regression by applying the SPSS/WIN program 22.0. Results: The HRQoL was significantly different by age (F=5.87, p=.001), education (F=2.98, p=.022), working period (F=4.70, p=.004), exercise (t=2.20, p=.030), chronic disease (t=-2.57, p=.011), BMI (F=5.04, p=.008), depression (F=4.70, p=.004), stress (F=7.82, p<.001), and subjective health status (F=7.91, p=.001). Factors influencing the HRQoL for women merchants included BMI (β=-.35, p<.001), subjective health status (β=.33, p<.001), and stress (β=-.18, p=.021). The explanation power of this regression model was 29.8% (F=5.51, p<.021). Conclusion: BMI, subjective health status, and stress affect the HRQoL of the subjects evaluated. Therefore, there is a need for health management programs that may decrease stress, control the BMI, and improve the subjective health status of women merchants at traditional markets.

• 법제연구
• /
• 제41호
• /
• pp.367-399
• /
• 2011

현행 자본시장법 제174조는 상장법인을 중심으로 정보접근의 우월적 지위가 있는 자들에 한정하여 미공개중요정보의 이용을 금지하고 있다. 아울러 규제대상정보의 범위도 상장법인의 업무 등에 관한 정보에 한정하며, 시장정보는 예외적으로 규제하고 있다. 그러나 현행법상 규제되지 않는 미공개정보의 이용행위 중에는 정보 비대칭의 이용이라는 불공정한 속성을 가진 경우가 상당하며, 특히 외부자에 의한 정보이용의 경우가 그러하다. 본 논문은 이와 같이 현행법상 규제의 범위에 포섭되지 않는 외부자거래의 다양한 유형을 그 이용대상정보가 내부정보인가 외부정보인가에 따라 구분한 뒤, 각각 규제의 필요성을 검토하고 개선안을 모색하였다. 현재 규제되지 않는 외부자거래의 유형으로는 (i) 불법적으로 지득한 내부정보를 이용한 거래, (ii) 합법적으로 우연히 지득한 내부정보를 이용한 거래, (iii) 정보생성자 및 그 관련자의 외부정보에 기한 거래 등을 들 수 있다. 이 가운데 (i)과 (iii)의 경우는 자본시장법상 포괄조항인 제178조 제1항 제1호의 적극적 해석을 통해 규제가 가능할 것으로 판단된다. 우연히 지득한 정보를 이용하는 (ii)의 경우는 규제의 필요성이 그리 크지 않은 것으로 보인다. 향후 입법자가 자본시장법의 미공개정보이용 규제의 틀을 회사관계 중심규제에서 완전한 정보보유 중심규제로 바꾸게 되면 규제의 공백 없이 미공개정보를 '이용'한 모든 경우가 규율될 수 있을 것이다. 그렇지만 정보보유 중심규제로의 전환을 선택하기 위해서는 그로 인한 장단점을 충분히 검토해야 하며, 결국 미공개정보이용의 규제 목적이 무엇인가를 염두에 두어야 할 것이다. 그리고 이러한 규제 체계의 전환이 있을 때까지는 현행법상의 적용 가능한 조문을 적극적으로 활용할 것이 요청된다.

• The Journal of Asian Finance, Economics and Business
• /
• 제7권5호
• /
• pp.9-18
• /
• 2020

The research paper examines the influence of elections on the stock market. The study analyses whether the market reaction would be the same when a party wins and comes to power for the second consecutive time. The study employs Market Model Event study methodology. The sample period taken for the study is 2014 to 2019. A sample of 31 companies listed in Bombay Stock Exchange is selected at random for the purpose of the study. For the elections held in 2014, an event window of 82 days was taken with 39 days prior to the event and 42 days post event. The event (t0) being the declaration of the election results. For the elections held in 2019 an event window of 83 days was taken with 41 days prior to the event and 41 days post event. The results indicate that the market reacts positively with significantly positive Average Abnormal Returns. The findings of the study reveal that the impact on the market is not the same between any two elections even when the same party comes to power for the second time. The semi-strong form of efficient market hypothesis holds true in the context of emerging markets like India.