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《Automation of Electric Power Systems》 2006-07
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Time-interval Based Comprehensive Control Strategy for Daily Voltage/VAR Optimization in Distribution Systems

WANG Xiu-li, LI Zheng-wen, HU Ze-chun (Xi'an Jiaotong University, Xi'an 710049, China )  
A new time-interval based comprehensive optimization control strategy is presented for reducing the daily energy loss, improving the voltage quality and simplifying the operations of on-load tap changer (OLTC) and shunt capacitor (SC). The algorithm considers not only the reduction of energy loss but also the operation cost of OLTCs and SCs. A heuristic and iterative algorithm is introduced to determine the control period of the next day, in which the number of the control period depends on the maximal allowable switching times of SCs. After the partition results being achieved, a secondary control strategy of the OLTCs is implemented depending on the voltage quality and energy loss reduction in the period of specified interval. Case studies illustrate that the proposed partition algorithm and control strategy can effectively reduce the daily energy loss, improve the voltage quality and simplify the control operations.
【Fund】: 国家重点基础研究发展计划(973计划)资助项目(2004CB217905) 中华电力教育基金会许继奖教金资助项目。
【CateGory Index】: TM76
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