基于等值模型的配电网机电-电磁混合仿真接口  

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

作　　者：奚鑫泽 李胜男 徐志 XI Xinze;LI Shengnan;XU Zhi(Electric Power Research Institute of Yunnan Power Grid Co.,Ltd.,Kunming 650217,China)

机构地区：[1]云南电网有限责任公司电力科学研究院,云南昆明650217

出　　处：《电力系统保护与控制》2021年第1期81-90,共10页Power System Protection and Control

基　　金：国家自然科学基金项目资助(51707026);国家重点研发计划项目资助(2016YFB0900200)。

摘　　要：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,并对接口处基波相量的提取进行改进。采用滤除直流分量的改进型Dq-120方法。最后,含33节点配电网的仿真算例验证了混合仿真接口的正确性。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.

关 键 词：混合仿真 戴维南等值 交互时序 Dq-120相量提取 

分 类 号：TM73[电气工程—电力系统及自动化]