• 제목/요약/키워드: Power Distribution Systems

검색결과 1,310건 처리시간 0.024초

Realization of Information Visualization of Electric Power Monitoring System for MV/LV Distribution Customers

  • Kim Jae-Chul;Chu Cheol-Min;Knag Bong-Seok;Kim Yeong-Il;Choi Duck-Su;Kim Kwang-Soon;Ryu Seung-Ki
    • Journal of Electrical Engineering and Technology
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    • 제1권3호
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    • pp.287-294
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    • 2006
  • Recently, switchboards for MV/LV distribution customers have been united and digitalized rapidly. This paper proposes the effective information visualization method for the data measured from cubicle switchboards for MV/LV distribution customers. We developed the algorithm that analyzes abundant data measured by switchboards and displays them to overall users, such as fire information index, power condition index, switchboard safety index, and power diminution index. Using a touch screen made users to operate it easily. User interface was also improved by taking graphic visualization. We guess the information visualization method suggested in this paper shows the new direction that heavy electrical equipments including switchboards are going to develop in the future.

154kV 송전선로용 피뢰기 현장 설치 효과 분석 (Study on the effects of lightning arrestors installment on a 154kV transmission system)

  • 최한열;민병욱;박순규;이봉희;곽주식
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2008년도 추계학술대회 논문집 전기설비전문위원
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    • pp.9-11
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    • 2008
  • Lightning has been identified as one of the leading causes of outages on transmission and distribution systems. To protect the transmission and distribution line from lightning, the transmission lightning arrestor can be the effective facility on the power system. This paper will discuss Gapped type Arresters application results by analysing effects of lightning arrestors on transmission and distribution line.

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개선된 선로교환 기법을 이용한 방사상 전력계통의 최적 라우팅 알고리즘의 적용 (An Application of the Optimal Routing Algorithm for Radial Power System using Improved Branch Exchange Technique)

  • 김병섭;신중린;박종배
    • 대한전기학회논문지:전력기술부문A
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    • 제51권6호
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    • pp.302-310
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    • 2002
  • This paper presents an application of a improved branch exchange (IBE) algorithm with a tie branch power (TBP) flow equation to solve the Optimal Routing problem for operation of a radial Power system including power distribution system. The main objective of the Optimal Routing problem usually is to minimize the network real power loss and to improve the voltage profile in the network. The new BE algorithm adopts newly designed methods which are composed by decision method of maximum loss reduction and new index of loss exchange in loop network Thus, the proposed algorithm in this paper can search the optimal topological structures of distribution feeders by changing the open/closed states of the sectionalizing and tie switches. The proposed algorithm has been evaluated with the practical IEEE 32, 69 bus test systems and KEPCO 148 bus test system to show favorable performance gained.

배전원격관리를 위한 차세대 디지털 적산전력계 개발 (Development of ADWHM(Advanced Digital Watt-Hour Meter) for Remote Management of Distribution Systems)

  • 고윤석;윤상문;서성진;강태규
    • 대한전기학회논문지:전력기술부문A
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    • 제53권6호
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    • pp.316-323
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    • 2004
  • This paper develops an ADWHM(Advanced Digital Watt-Hour Meter) which integrates and implements the voltage management data record function and the load management data record function in the electronic watt-hour meter. ADWHM is developed based on PIC16F874 which is 8bit micro-controller of RISK type for the easy of programing and maintenance, and electronic power signal processing module is located at front of it to reduce the computing load of processor. Also, a 16kbyte EEPROM is used to record the voltage management data and load management data for a week as well as watt-hour data and USART communication mode is used to transfer data from ADWHM to PC. The accuracy of the voltage and unt measuring for ADWHM is verified by identifying the LCD display values of the ADWHM after the voltage signals of id levels from digital function generator is applied to PT(Potential Transformer) and CT(Current Transformer) output under state which it is separated from real power line. On the its basic functions such as watt-hour data recording function, voltage management data recording function and load management data recording function was verified by showing data for three days among the collected data to PC by RS232C communication from ADWHM which was connected to real power lines for a week.

국내 데이터를 고려한 전기 자동차 충전 시 순시전압강하에 관한 연구 (A Study on the Voltage Sag During the EVs Charging Considering Domestic Data)

  • 고효상;김준혁;김응상;김철환
    • 조명전기설비학회논문지
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    • 제29권1호
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    • pp.37-46
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    • 2015
  • In order to charge EVs, they have to be connected to distribution system. Therefore, if unprecedented numbers of EVs are connected to power systems, it could result in deterioration of power quality, overload, and other system problems. In this paper, the effects of voltage sag on the distribution system due to the connection of EVs is evaluated by considering related field data of Republic of Korea such as the number of gasoline-fueled vehicles, seasonal load of power system and the monthly and daily real-time traffic volume. The distribution system and EVs are modeled using the Electro Magnetic Transients Program (EMTP).

초기 운전점 선정을 통한 배전계통 최적 재구성에 관한 연구 (A study of Optimal Reconfiguration in Distribution Power System using Initial Operating Point)

  • 서규석;김정년;백영식
    • 전기학회논문지
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    • 제56권3호
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    • pp.451-456
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    • 2007
  • This paper presents a problem that reconfigure distribution power system using branch exchange method. Optimal reconfiguration problem calculates line loss, voltage condition about system states of all situations that become different according to line On/off status, and search for optimum composition of these. However, result is difficult to be calculated fast. Because radiated operation condition of system is satisfied using many connection and sectionalize switches in the distribution power system. Therefore, in this paper, optimization method for reducing system total loss and satisfying operating condition of radial and constraints condition of voltage is proposed using the fastest branch exchange. And optimal solution at branch exchange algorithm can be wrong estimated to local optimal solution according to initial operating state. Considering this particular, an initial operating point algorithm is added and this paper showed that optimal solution arrives at global optimal solution.

멀티미디어 배전감시 제어시스템의 MMI 기술개발 (Development of MMI Techniques of the Power Distribution Control Systems for Multimedia Environment)

  • 이병철;정진현
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1998년도 하계학술대회 논문집 C
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    • pp.1185-1187
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    • 1998
  • The object of this study shows a program for supervisory control of the electric power distribution, approach to the more easy manipulations and hangulization that could be easily familiar to the domestic operators whereas the program, up to now, displayed only in English. This program is consist of a skeleton-diagram designer and a state-displayer of the electric power distribution To make skeleton-diagram data available in state-displayer, the designer must be performed with the proposed format in the program manual. States display executes downloading S/Ws-state-data externally and display the S/W informations at that times, and also power distribution simulation of voluntary S/W manipulations performed by the internal operators is possible.

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S-transform을 이용한 배전계통의 이벤트와 변동 판별 알고리즘 개발 (Development of the Discrimination Algorithm for Event and Variation in Distribution System Using S-transform)

  • 이순정;서훈철;김철환
    • 전기학회논문지
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    • 제61권5호
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    • pp.657-663
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    • 2012
  • Recently, by increasing of devices which are sensitive to power quality, the deterioration of power quality has been accelerated. For this reason, the social and economic losses are increased. So not only correct measurement and evaluation, but also countermeasure for improvement of power quality is surely necessary for both electric power supplier and consumer. In this paper, the discrimination algorithm for events and variation occurred in distribution systems using S-transform is proposed. Firstly, we review for events and variations that occur in distribution system. Next, we simulate events and variations on various conditions using ElectroMagnetic Transient Program(EMTP). For the simulation, the IEEE 13 Node Test Feeder and KEPCO's distribution system is modeled. Finally, for the analysis, a modified wavelet transform known as S-transform is adopted to find out the characteristics of each events and variations.

멀티에이전트 시스템을 이용한 배전계통 사고복구시스템에 관한 연구 (A study on Service Restoration Systems for Power Distribution Networks by Applying Multi-Agent System)

  • 정광호;최면송;이승재
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2004년도 하계학술대회 논문집 A
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    • pp.403-405
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    • 2004
  • A service restoration is one of the most important missions in distribution system operation. This paper proposes a multi-agent system approach to distribution system restoration. Every relay is developed as an agent by adding its own intelligent, self-tuning and communication ability. Relay agent calculates and corrects its restoration index by itself through communication with neighboring agents and its own intelligence. The proposed algorithm is applied to a simple network to show how to calculate restoration index. Keywords Multi-Agent System, Service Restoration, Distribution Networks

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Anomaly Detection System for Solar Power Distribution Panels utilizing Thermal Images

  • Kwang-Seong Shin;Jong-Chan Kim;Seong-Yoon Shin
    • Journal of information and communication convergence engineering
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    • 제22권2호
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    • pp.159-164
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    • 2024
  • This study aimed to develop an advanced anomaly-detection system tailored for solar power distribution panels using thermal imaging cameras to ensure operational stability. It addresses the imperative shift toward digitalized safety management in electrical facilities, transcending the limitations of conventional empirical methodologies. Our proposed system leverages a faster R-CNN-based artificial intelligence model optimized through meticulous hyperparameter tuning to efficiently detect anomalies in distribution panels. Through comprehensive experimentation, we validated the efficacy of the system in accurately identifying anomalies, thereby propelling safety protocols forward during the fourth industrial revolution. This study signifies a significant stride toward fortifying the integrity and resilience of solar power distribution systems, which is pivotal for adapting to emerging technological paradigms and evolving safety standards in the energy sector. These findings offer valuable insights for enhancing the reliability and efficiency of safety management practices and fostering a safer and more sustainable energy landscape.