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조보현(Bohyeon Cho),김재철(Jaechul Kim),조성민(Sungmin Cho),신희상(Heesang Shin),박진현(Jinhyeon Park) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
In this paper, the study of upgrading feeders from radial to 3 possible loop arrangements has been discussed and the requirements of possible loop arrangements have also been simply discussed. Next, circulating currents have been analyzed for the 3 types of loop arrangements to find which type of arrangements can be simply used and what can be a constraint. Finally, the most suitable and feasible loop arrangement was recommended regarding constraints and requirements.
손실 최소화를 위한 배전 계통 재구성의 최적 부하 선정
조보현(Bohyeon Cho),조성민(Sungmin Cho),신희상(Heesang Shin),박진현(Jinhyeon Park),김재철(Jaechul Kim) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.11
Selecting optimal load used in distribution optimization considering time-varying load demand is investigated in this paper. The objective of this paper is to select the most proper load of distribution system to have the biggest gain loss. Most method of past distribution reconfiguration did not consider the time-varying load demand. However, to get best result, time-varying load demand for 24 hours should be regarded. But, only the optimization with time-varying load demand cannot get the feasible dispatch scheme because it may require the hourly switching operation of electric devices which cause deterioration of switches life and switching loss. Therefore, selecting optimal load for loss minimization considering not only time-varying load demand but also switching is researched in this paper.
계절별 부하 특성 곡선을 이용한 배전 계통 재구성에 관한
조보현(Bohyeon Cho),조성민(Sungmin Cho),신희상(Heesang Shin),박진현(Jinhyun Park),김재철(Jaechul Kim) 대한전기학회 2011 대한전기학회 학술대회 논문집 Vol.2011 No.10
Most of conventional papers have aimed at minimizing system power loss or relieving overloads in the distribution system for ages. However, conventional papers have only used spot-loads which are maximum loads or average loads to minimize power loss so that the results of reconfiguration cannot be same at the other time periods. And if hourly reconfiguration is conducted, the loss of switching might be bigger than the loss reduction by the reconfiguration. Therefore, the purpose of reconfiguration should focus on reducing the distribution operation cost by considering not only loss reduction but also switching cost.