一种直供电系统中各发电机组的协调控制方法

A Coordinated Control Method for Generator Units in Direct Power Supply System

提出了一种大电源向大负荷直供电系统中各发电机组的协调控制方法,选择机组最佳的控制模式,在最佳控制模式下,通过实验依据机组负荷响应时间短、负荷变化率快的原则确定第一、二、三调频机组,设置不同调频机组的参数。这样避免了大电源向大负荷直供电系统中机组调频匹配不一致导致电网不稳定的现象发生,达到机组顺序动作、多级防护、减少电网波动次数和溃网的风险。

A coordinated control method for the generator units in direct power supply system is proposed in the paper. The best control mode is selected, in which the first, second and third frequency-regulation units are determined and frequency-modulated parameters are set up for different units based on the principle of short respond time and fast load changing rate obtained through experiments. In this way power grid instability due to discrepancy of primary frequency is avoided in direct power supply system and the units can act in regulated sequence with multi-level protection, to reduce frequency fluctuations and the risk of grid collapse.