• 제목/요약/키워드: Short-Term

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기온과 부하패턴을 이용한 단기수요예측 (Short-term Load Forecasting by using a Temperature and Load Pattern)

  • 구본희;윤경하;차준민
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2011년도 제42회 하계학술대회
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    • pp.590-591
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    • 2011
  • This paper proposes a short-term load forecasting by using a temperature and load pattern. The forecasting model that represents the relations between load and temperature which get a numeral expected temperature based on the past temperature was constructed. Case studies were applied to load forecasting for 2009 data, and the results show its appropriate accuracy.

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單一 排出源大氣汚染 短期모델에 관한 硏究 -Tracer Gas에 의한 擴散實驗- (On the Short Term Air Pollution Dispersion Model for the Single Souce -Diffusion Experiment With Tracer Gas-)

  • 李鍾範;姜寅求
    • 한국대기환경학회지
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    • 제5권2호
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    • pp.84-96
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    • 1989
  • To evaluate the short term air pollution dispersion model, the diffusion experiment was conducted on the flat terrain near Chuncheon. Sulfur hexafluoride $(SF_6)$ gas was used to determine the horizontal spread of plume $(\sigmay)$ for calculated by CRSTER model. Results show that CRSTER model underestimates $\sigma$y because averaging time adjustment is not applied to calculate the $\sigma$y. The scheme that can estimate the atmospheric stability more accurate than Turner method, was presented.

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유전알고리즘을 이용한 단기 수력 스케줄링에 관한 연구 (Short-term Hydro Scheduling by Genetic Algorithms)

  • 이용한;황기현;문경준;박준호
    • 대한전기학회논문지:전력기술부문A
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    • 제48권9호
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    • pp.1088-1095
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    • 1999
  • This paper presents short-term hydro scheduling method for hydrothermal coordination by genetic algorithms. Hydro scheduling problem has many constraints with fixed final reservoir volume. In this paper, the difficult water balance constraints caused by hydraulic coupling satisfied throughout dynamic decoding method. Adaptive penalizing method was also proposed to handle the infeasible solutions that violate various constraints. In this paper, we proposed GA to solve hydrothermal scheduling with appropriate decoding method and dynamic penalty method. The effectiveness of the proposed method is demonstrated in the case study.

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The Performance of Time Series Models to Forecast Short-Term Electricity Demand

  • Park, W.G.;Kim, S.
    • Communications for Statistical Applications and Methods
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    • 제19권6호
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    • pp.869-876
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    • 2012
  • In this paper, we applied seasonal time series models such as ARIMA, FARIMA, AR-GARCH and Holt-Winters in consideration of seasonality to forecast short-term electricity demand data. The results for performance evaluation on the time series models show that seasonal FARIMA and seasonal Holt-Winters models perform adequately under the criterion of Mean Absolute Percentage Error(MAPE).

대기상태를 고려한 단기부하예측에 관한 연구 (A study of short-term load forecasting in consideration of the weather conditions)

  • 김준현;황갑주
    • 전기의세계
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    • 제31권5호
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    • pp.368-374
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    • 1982
  • This paper describes a combined algorithm for short-term-load forecating. One of the specific features of this algorithm is that the base, weather sensitive and residual components are predicted respectively. The base load is represented by the exponential smoothing approach and residual load is represented by the Box-Jenkins methodology. The weather sensitive load models are developed according to the information of temperature and discomfort index. This method was applied to Korea Electric Company and results for test periods up to three years are given.

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온도와 부하의 관계를 이용한 단기부하예측 (Short-Term Load Forecasting using Relationship of Temperature and Load)

  • 이경훈;이윤호;김진오;이효상
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2001년도 추계학술대회 논문집 전력기술부문
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    • pp.272-274
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    • 2001
  • This paper presents a model for short-term load forecasting using relationship of temperature and load. We made one-day ahead load forecasting model using hourly normalized load and 11 dummy variables that were classified by day characteristics such as day of the week, holiday, and special holiday.

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Synaptic Facilitation of Naive and Depressed Synapses in Aplysia

  • Chang, Deok-Jin;Kaang, Bong-Kiun
    • 한국생물물리학회:학술대회논문집
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    • 한국생물물리학회 2001년도 학술 발표회 진행표 및 논문초록
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    • pp.23-23
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    • 2001
  • To evaluate the contribution of cAMP/PKA signal pathway in short-term facilitation, we overexpressed Ap oal receptor in sensory neurons that do not normally express this receptor. We have previously shown that activation of this receptor in sensory cells, by a brief treatment with octopamine (OA), produced short-term facilitation such as membrane depolarization, increase in membrane excitability, spike broadening, and enhanced neurotransmitter release in non-depressed synapse.(omitted)

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콘크리트용 건설자재의 단기수요 예측모형에 관한 연구 (A Study on the Short-Term Demand Forecasing System of the Construction Materials for Concrete)

  • 최민수;김무한
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 1991년도 가을 학술발표회 논문집
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    • pp.146-151
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    • 1991
  • In recent years a reasonable supply and demand plan of construction materials which is based upon an accurate forecast has been greatly required to prevent construction works from delaying and slapdash. To meet an above requirement, a short-term forecasting system of construction materials, in this paper, is established, which is approached in engineering aspect and emerged from conventional forecasting systems. The major considerations in setting up this system are the distributed lag of consrection business indicators and seasonal variations in consumption of constuction materials.

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다양한 보조설비를 가진 열병합발전시스템의 단기운전계획 (Short-term Operation Strategy of Cogeneration System with Auxiliary Equipments)

  • 이종범;정창호;류승헌
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1994년도 추계학술대회 논문집 학회본부
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    • pp.24-26
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    • 1994
  • This paper describes a numerical model for the short-term operation strategy of the cogeneration systems. Especially this paper considered various auxiliary equipments used for the effective operation of cogeneration system. Minimum daily operation costs of topping cycle are calculated by using LP. Simulation results of some cases are analyzed and compared each other. Through these simulations the validity of the proposed model considered various auxiliary equipments is verified.

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