CCC在直流输电系统中的运行特性分析  

The Analysis of Operating Characteristics of Cpacitor Commutated Converter

作　　者：袁海燕[1] 梁小冰[1] 庄燕飞[1] 

机构地区：[1]广西大学,南宁530004

出　　处：《电气开关》2006年第5期13-14,18,共3页Electric Switchgear

摘　　要：在串联电容换流装置中CCC与传统的换相换流器相比,有一些优点。当运用高压直流输电技术连接两个大型非同步电力系统时,所连接电网的短路容量与额定直流功率相比可能降低,尤其当系统运行在逆变侧系统为弱交流故障的情况下,这可能导致高压直流系统发生严重的次同步振荡。本文采用暂态仿真软件PSCAD对CCC的运行特性进行了评估。Capacitor commutated converter has some advantages in operating at serious conditions with comparing to the conventional line commutated converter. When connecting two large asynchronous power system using HVDC technology with a high transmission capacity, the short--circuit power of the connected networks can be low compared to the rated DC power. For this reason,stability problems might occur during the operation of the HVDC system. Especially when operated at weak inverter side networks AC fault in severe disturbances of the HVDC system. The performance of CCC is evaluated using the transient simulation program PSCAD.

关 键 词：高压直流输电(HVDC) 电容换向换流装置(CCC) 次同步振荡(SSO) 

分 类 号：TM72[电气工程—电力系统及自动化]