低压减载装置作为电压稳定校正控制的探讨

Research on Under-voltage Load Shedding as Corrective Control for Voltage Stability

首先阐述了电压失稳的机理,指出了传统低压减载装置对防止电压稳定破坏的不足,提出了带有模糊辨识的加速低压减载装置,然后通过仿真算例证明了所提加速低压减载装置对防止电压崩溃的有效性。

This paper investigates voltage stability phenomenon in transient and mid-term time scales. A under-voltage load shedding method based on fuzzy＇ identification is presented, which overcomes the deficiencies of the traditional method. In this method, the reactive margin of the system, the dynamic load characteristics and the voltage drop are taking into account ,the validity of the proposed method is illustrated on a real 1680-bus system.