Static Voltage Stability Analysis of Beijing Power Grid under Minimum Output Mode

摘要

According to the national air pollution control plan, the output of generators in Beijing power grid will be decreased, which may lead to voltage stability becoming worse. In order to analyze the changes of static voltage stability under minimum output mode, the impedance modulus margin index and sensitivity index of Beijing 2017 power grid are calculated, and the results of the two modes are compared in this paper. The results show that the reduce of generator output can enhance the power flow on transmissions, leading to the decline of static voltage stability, and change the relative order of bus voltage stability, but will not change the distribution of system voltage weak areas a lot.