基于综合灵敏度的小水电地区无功补偿方法  

Reactive Power Compensation Method for Small Hydropower Stations Based on Comprehensive Sensitivity

作　　者：赵恬[1] 杨剑锋[1] 王天科[2] 

机构地区：[1]兰州交通大学自动化与电气工程学院,甘肃兰州730070 [2]安康水力发电厂,陕西安康725000

出　　处：《郑州大学学报（理学版）》2016年第3期107-112,共6页Journal of Zhengzhou University:Natural Science Edition

基　　金：甘肃省自然科学基金资助项目(148RJZA040)

摘　　要：针对丰水期小水电并网造成的区域电压越限、网损过高等问题,提出了一种基于综合灵敏度指标的感性无功补偿方案.在利用灵敏度分析法确定各节点电压控制能力和无功网损灵敏度的基础上,构建综合灵敏度指标,并基于此提出了富含小水电地区感性无功补偿选点方法.该方法在确定最优补偿节点的过程中,综合考虑了各节点的无功变化对系统电压和网损的影响,能够在不增加网损的基础上最大限度地提高电压质量.最后对陕西某富含小水电片区数据进行仿真验证,结果表明该方法有效可行.To solve the problems of regional voltage limitation and high network loss caused by the grid-connection of small hydropower in the wet season, an inductive reactive power compensation scheme based on comprehensive sensitivity was proposed. The capability of voltage control and sensitivity index of network loss reactive power for each node were obtained and the comprehensive sensitivity index was built . How to select the optimal installation site of inductive reactive power compensation devices in small hydropower area was proposed. And the effects on the system voltage and network loss caused by the change of inductive reactive power of each node were taken into consideration. The voltage quality was improved without increasing network loss. The data of a small hydropower station in Shaanxi province confirmed the effectiveness and feasibility of the scheme.

关 键 词：小水电 经济压差 并联电抗器 无功补偿 灵敏度分析 

分 类 号：TM714.3[电气工程—电力系统及自动化]