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Power System Stability Improvement by Using STATCOM with POC & Excitation Controller

Power System Stability Improvement by Using STATCOM with POC & Excitation Controller
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摘要 This paper presents the model of a static synchronous condenser (STATCOM) which is controlled externally by a newly designed power oscillation controller (POC) for the improvements of power system stability and damping effect of an on line power system. The proposed POC consists of two controllers (power oscillation damping & proportional integral derivative PID & POD). PID parameters have been optimized by Zigler Necles close loop tuning method. Machine excitation has been controller by using excitation controller as required. Both single phase and three phase faults has been considered in the research. In this paper, a power system network is considered which is simulated in the phasor simulation method & the network is simulated in three steps: without STATCOM, with STATCOM but no externally controlled, STATCOM with POC. Simulation result shows that without STATCOM, the system parameters become unstable during faults. When STATCOM is imposed in the network, then system parameters become stable. Again, when STATCOM is controlled externally by POC controllers, then system voltage & power becomes stable in faster way then without controller It has been observed that the STATCOM ratings are only 20 MVA with controllers and 200 MVA without controllers. Therefore, STATCOM with POC controllers are more effective to enhance the voltage stability and increases power transmission capacity of a power system. So STATCOM with POC & excitation controllers, the system performance is greatly enhanced.
出处 《Computer Technology and Application》 2013年第12期643-648,共6页 计算机技术与应用(英文版)
关键词 STATCOM voltage regulator power system controller PID POD POC and MATLAB simulink. 电力系统稳定性 STATCOM POC 励磁控制器 静止同步补偿器 功率振荡 三相故障 模拟方法
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参考文献8

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