The research of minimum starting-up units mode considering voltage stability

This paper presented a method of unit optimization considering voltage stability, which based on the actual engineering application. In order to keep the safety and reliability of power system operation and the quality of power energy, the power balance analysis, power flow analysis, voltage stability analysis, load balance analysis and power exchange are adopted to determine the optimal unit commitment of power system. The results of unit optimization of Shanghai grid of different load levels show that, the proposed method provide a great of helps to solve the problem of unit optimization. It is also an effective mean to ensure the stability of power system running.