一种新型静止无功补偿器控制系统的设计与仿真

分析了SVC的基本组成和工作原理,设计了一种新型的SVC控制系统,并运用PSCAD/EMTDC仿真软件对控制系统中的主要功能,如电压控制模式、恒导纳控制模式、慢速导纳控制以及增益优化等环节进行了数字建模,并提出了MSC/MSR软投切控制,实现了SVC无功输出的无缝变化。仿真结果表明该SVC控制系统具有良好跟踪设定参考值变化的能力;当系统发生故障时,控制系统调节快速,能迅速抑制电压波动,并使故障恢复后的系统能平稳过渡到稳定工况,从而说明所建仿真模型的正确性。

Design and Simulation of SVC Control System Based on PSCAD/EMTDC

A SVC control system is advanced in this article based on the constitution and working mechanism of SVC.The simulation software PSCAD/EMTDC is used to establish the model for SVC control system,including the voltage control mode,constant admittance control mode,slow admittance controller,gain optimization unit,and MSC / MSR soft switching control is presented for continuous changes of SVC reactive power.The simulation results indicate that the designed SVC control system has great tracing ability to track the setting reference parameter. When a fault occurs,the fast adjustment of control system can inhibit the voltage fluctuation in a short time,and make the system transforming to the steady operation condition smoothly after faults.