直流准稳态模型换相失败判断标准的工程实用整定方法研究

Practical methods for setting commutation failure criteria for HVDC quasi-steady-state models

介绍了在网络等值化简基础上搭建的适合于研究交直流交互影响的华东电网电磁暂态仿真数据平台。通过仿真对称和不对称交流故障激发直流换相失败,提取换相失败的临界条件,作为直流准稳态模型换相失败的判断标准。研究表明对于对称和不对称故障应采用不同的换相失败判断标准。认为采用电磁暂态仿真方法整定机电暂态中直流换相失败的判断标准具有开创性,对开展机电环境下交直流交互影响研究具有一定的指导意义。

Based on network equivalence, an electromagnetic transient simulation platform suitable for studying interaction between AC and DC systems was built. The commutation failure scenarios were simulated by symmetrical and asymmetry faults, and then the critical conditions of commutation failures were extracted as commutation failure criteria. The study indicated that different commutation failure criteria should be adopted for symmetrical and asymmetry faults respectively.