变耦电抗式可控串补的操作特性分析和试验

为了解变耦电抗式可控串补的各种操作特性,对串补装置典型操作时的电流、电压进行了试验和分析.提出用于串补装置暂态分析的通用等值电路,利用特性参数建立电路方程解的通用结构.利用特性参数法分析线路开关投入装置时的过流、过压,以及装置在逐级和大跨级调节换级过程中的电流、电压特性.采用电磁仿真软件EMTDC对旁路开关投、退串补装置的操作过程进行了仿真;还进行了动态模拟试验以及装置在典型换级过程中的电流、电压的特性测试.结果表明和理论分析是一致的.

Operational characteristics analysis and experiments of TCSCAC

In order to understand the various operational characteristics of TCSCAC (Thyristor Controlled Reactance Series Compensation by Adjustable Coupling),the current and voltage during the typical opera-tion of TCSCAC device are analyzed and experimented. Its general equivalent circuit is proposed for the transient-state analysis and its general frame of circuit equation solutions is built with its charac-teristic parameters. The over-current and over-voltage during device switch-on operation and the current and voltage characteristics during one-step and multi-step regulations are analyzed. The operational pro-cess of device switch-on and switch-off by bypass switch is simulated with EMTDC software, the dy-namic simulative tests are carried out and the current and voltage characteristics during typical tap-changing process are investigated. The test results accord with the theoretical analysis.