Analyze on Dynamic Frequency Characteristic of Industrial Electric Power Network under Power Situation when External Faults Occur

The dynamic frequency characteristics of industrial electric power network is Analyzed when external faults occurs. It reveals the active power gap, adjusting effect parameters and other related factors how to affect the frequency. Appropriate model is build about Tianjin Sinopec Company. Power transition process under external faults is simulated by PSASP. It proves the correctness of the conclusions. Above all, it is good for taking measures to ease lowering speed of frequency, change the steady-state value of frequency, and improving the safety and stability of industrial electric power network.