GB/T 40615-2021 Translated English of Chinese Standard (GB/T40615-2021, GBT 40615-2021): Guides of power system voltage stability evaluationThis document establishes the principles for evaluating the voltage stability of power systems. It specifies the evaluation contents and methods for steady-state voltage stability, transient voltage stability and long-term voltage stability. This document is applicable to the calculation and analysis of voltage stability of power systems of 110kV and above. For other voltage levels, it can refer to this document for implementation. |
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active power margin busbars Calculation method constant power Corporation of China criteria for transient DC circuit DC short-circuit ratio DC system DC transmission equipment dynamic components electromagnetic transient model electromechanical Evaluation method Grid Corporation impedance matrix Zeq increase the load large disturbances load bus voltage load growth method load growth mode load model load reactive power long-term voltage stability maintain a stable megawatts MW mode after N-1 model that considers MSCR multi-infeed AC-DC system multi-infeed DC short-circuit node impedance matrix obtain the P-U operation mode P-U curve photovoltaic power factor Power Grid power margin Kvq power of DC power system reactance reactive power margin regional load renewable energy station safety and stability short-circuit capacity simulation calculation stability The ability stable voltage steady-state voltage stability system is subjected system maintain system voltage stability transient process transient voltage stability U-Q curve voltage collapse point voltage drop voltage stability evaluation voltage stability margin Wang