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提出的链式静止同步补偿器(STATCOM)阀周期触发和熄灭试验方法对于装置的工程化具有重要意义,既检验了阀的基本性能,又可以发现工程设计中的缺陷。结合上海西郊变电站±50Mvar链式STATCOM科技示范工程,根据PACAD仿真结果分析了阀在吸收无功和发出无功2种工况下的电压、电流应力。在此基础上,提出了阀周期触发和熄灭试验的试验方法及其试验电路,详细分析了电路的基本工作原理,建立了相应的数学模型,并利用PSCAD仿真软件加以验证。最后给出了试验结果,验证了试验方法的正确性。
The proposed STATCOM valve cycle triggering and extinguishing test method is of great significance for the engineering of the device. It not only verifies the basic performance of the valve, but also can find the defects in the engineering design. Combined with the ± 50Mvar chain STATCOM technology demonstration project in Shanghai Suburban Substation, the voltage and current stress of the valve under two conditions of reactive power and reactive power were analyzed based on the PACAD simulation results. On this basis, the valve periodic triggering and extinguishing test methods and test circuits are proposed. The basic working principle of the circuit is analyzed in detail. Corresponding mathematical models are established and verified by PSCAD simulation software. Finally, the test results are given to verify the correctness of the test method.