胡涛,杜梦如,马建,王学伟,邓高峰.新型电力系统动态负荷电能测量算法[J].电测与仪表,2023,60(11):136-141. HU Tao,DU Mengru,MA Jian,WANG Xuewei,DENGGaofeng.Electrical energy measurement algorithm for new power system dynamic load[J].Electrical Measurement & Instrumentation,2023,60(11):136-141.
新型电力系统动态负荷电能测量算法
Electrical energy measurement algorithm for new power system dynamic load
In the construction of the new power system, the high proportion of new energy is connected to the power grid, the high-power nonlinear dynamic load increases, and the randomness, fluctuation and intermittency of the power load lead to the inaccuracy of the electric energy measurement algorithm, resulting in the out of tolerance of the electric energy meter, this paper constructs the active electrical energy convolution sum measurement algorithm, as well as the constraints of active electrical energy cumulative power threshold; By analyzing that the power threshold judgment method at the input of low-pass filter is an important reason for the inaccuracy of the traditional active electrical energy measurement algorithm, an active electrical energy measurement algorithm with improved constraints is proposed. By using the sampling response coefficient matrix decimation method, a non-overlapping decimation dynamic active electrical energy measurement algorithm is further proposed. The simulation results show that the error of the active electrical energy measurement algorithm with improved constraints and the non-overlapping decimation dynamic active electrical energy measurement algorithm is less than that of the traditional electrical energy measurement algorithm, which can effectively solve the problem of the inaccuracy of the traditional electrical energy measurement algorithm under dynamic conditions.
