基于PMU的发电机参数量测对电网输送能力提高的研究

Power Transfer Capability Raising Based on Generator Parameter Easurement by PMU

针对目前难以获得同步发电机实际运行工况参数的问题,利用同步相量测量单元(PMU)能直接测量发电机的功角以及机端电压和电流相角的特点,计算获得发电机实际运行的同步参数xd。将该直接测量的发电机运行参数运用于电力系统仿真计算,可提高电力系统暂态功角稳定水平和输电能力,同时也提高了系统的静态功角稳定水平。通过算例表明了此方法的实用性和方便性。

The parameters of practical operation for synchronous generator are often hard to be obtained at present, but the generator power angle, terminal voltage,current amplitude value and phase angle can be measured directly by synchronous phasor measurement unit, based on it, the parameter xd for practical operation of the generators is got, the parameter measured directly can be used in simulation calculation of power system, and it can improve the stability of transient power angle, power transfer capability, and stability of static power angle at the same time. example simulationshows the practicability and convenience of the method.