含多小水电的配电网电压分析与控制策略研究含多小水电的配电网电压分析与控制策略研究.pdfVIP

Smart Grid 智能电网, 2015, 5(6), 276‐284  Published Online December 2015 in Hans. /journal/sg  /10.12677/sg.2015.56033    Research on Analysis and Strategy of Voltage in Distribution Networks with Multi‐Small Hydropower 1,2* 1 1 1 1 3 Xiaoping Zhang , Hui Chen , Kelin Zhou , Xudong Song , Nanhua Yu , Xiuchao Tang 1 Electric Power Research Institute of Guangdong Power Grid Co. Ltd., Guangzhou Guangdong  2 Guangdong Provincial Key Laboratory of Smart Grid Technology, Guangzhou Guangdong  3 North China Electrical Power University, Beijing      th th th Received: Nov. 26 , 2015; accepted: Dec. 8 , 2015; published: Dec. 15 , 2015  Copyright © 2015 by authors and Hans Publishers Inc.  This work is licensed under the Creative Commons Attribution International License (CC BY).  /licenses/by/4.0/    Abstract Traditional operation mode of distribution network was altered with the integration of small hy‐ dropower in it, which causes the problem that the voltage of distribution network drops in dry season, increases in wet season, and the voltage fluctuates greatly with seasons especially at the end of the line. Analysis on voltage problem in distribution network in this paper draws the con‐ clusion that in wet season, the voltage rises since the power flow contrary sends to the main net‐ work when the small hydropower station’s generating capacity increases. This paper also presents a method of voltage control by changing