基于等值模型的配电网机电-电磁混合仿真接口

电力电子装置的广泛应用使得直流系统以及开关元器件广泛接入交流系统,不同时间尺度下的暂态过程交织在一起,增加了分析和控制电网的难度.包含多时间尺度的机电-电磁混合仿真能够有效地平衡电力系统仿真中规模、精度、效率等问题.提出应用于配电网的基于等值模型的混合仿真接口技术.采用诺顿/戴维南等值模型作为等值方法,采用并行交互方式...

Electromechanical-electromagnetic hybrid simulation interface of distribution network based on equivalent model

The extensive application of power electronic devices makes DC systems and switching components widely connected to AC systems.The transient processes at different time scales are intertwined.This increases the difficulty of analyzing and controlling the power grid.An electromechanical-electromagnetic hybrid simulation for large-scale power grids can balance the problems of scale,accuracy,and efficiency in power system simulation effectively.This paper proposes a hybrid simulation interface technology based on the equivalent model applied to the distribution network.Specifically,the Norton/Thevenin equivalent model is used.Parallel interaction timing is applied.In addition,the Dq-120 method of extracting the fundamental wave phasor at the interface is improved and used at the interface.Finally,a simulation example with a 33-node distribution network verifies the correctness of the hybrid simulation interface.