水电机组调速器提高一次调频响应合格率方法

Improved Percent of Primary Frequency Regulation Pass for Hydraulic Turbine Governor

针对水电机组投入一次调频后积分贡献电量不满足要求的问题,首先确定了影响积分贡献电量的因素为频差、功率死区、调差率及调速器参数Ki和Kp,归结起来,其物理本质是功率调节的响应速度对积分贡献电量的作用。然后引入功率前馈控制,提高功率调节的响应速度,从而提高积分贡献电量。仿真及现场试验结果均表明,该方法有效,能较好地满足水轮发电机厂功率模式下一次调频的要求。

In order to solve the problem that the integral power contribution of a hydropower unit cannot meet the requirements during aprimary frequency regulation process,the factors affecting the integral power contribution are firstly determined as frequency difference,power dead zone,adjustment rate and governor parameters Kiand Kp.To sum up,the physical essence behind the process is the effect of the response speed of power regulation on the integral power contribution.Then power feed forward control is introduced to improve the response speed of power regulation so as to improve the integral contribution.The simulation results and field test show that this method is effective and can meet the requirements of the primary frequency regulation under the power control mode of a hydropower station.