大容量 无功补偿.doc.doc

大容量交直流输电技术浅谈同步电网的无功补偿学院: 电气工程学院专业: 电气工程及其自动化姓名: 段晓瑞学号: 080804110192 【摘要】: 电网无功补偿,就是借助于无功补偿设备提供必要的无功功率,以提高系统的功率因数,降低能耗,改善电网电压质量。近年来,随着电网的进一步完善,工农业生产用电规模不断扩大,使得电力供需矛盾越来越突出。合理选择无功补偿方案和补偿容量,能有效提高系统的电压稳定性,保证电网的电压质量, 提高发输电设备的利用率,降低有功网损和减少发电费用。本文介绍了同步电网的定义,重点介绍了无功补偿的定义、原理,及两种实现无功补偿的装置 TSC 、 和SVC 。【关键词】同步电网; 电压稳定性; 无功补偿; 原理; TSC ; ; SVC 【 Abstract 】 Reactive pensation, isbymeans ofreactive pensation device toprovide the necessary reactive power, toimprove system power factor, reduce energy consumption, improve voltage quality. Inrecent years, with the grid further perfect, industrial and agricultural production ofelectricity dimensions toexpand ceaselessly, make the contradiction between power supply and demand ismore and more outstanding. Reasonable selection ofreactive pensation pensation capacity, can effectively improve the system voltage stability, ensure voltage quality, improve power utilization rate of equipment, reduce the active power loss and reduce power generation costs. This paper introduces the definition ofsynchronous work reactive pensation, introduced the definition, principle, and the two implementation ofreactive pensation device ofTSC and . 【 Key Words 】 Synchronous power ; grid voltage stability ; theory of reactive pensation ; TSC ; ; SVC 引言无功功率是在交流电路中,电源和储能元件之间来回交换的变动功率,无功功率并不是无用功率,而是在电能传输和转换过程中建立电磁场和提供电网稳定不可缺少的功率之一,无功功率经不同的电磁祸合反映不同的电压等级。电网无功补偿,就是借助于无功补偿设备提供必要