电力系统耦合双回路数学建模及仿真

对短距离电力系统数字仿真时，可按物理设备对系统分块，将电力传输线、同步发电机、变压器、综合负载分别作为独立模块建模，各模块连接处用解耦电压源替代，这样各模块可平行地进行数字积分。本文用集总参数建立了双回线而且考虑两回线之间以及每回线各相之间都分别存在着耦合的双回传输线模块数字实时仿真模型，并在已知同步发电机与综合负载模型的基础上，给出了相应的数值积分方法。

Modeling and Simulation of Power System's Coupled Parallel Transmission Lines

The short-distance power transmission system can be decomposed into its physical components in digital simulation . The transmission lines , synchronous generator , transformers and composite load are modeled separately and voltages at the intersections are substituted with the coupling voltage sources . Then each module can be numerically integrated in parallel . A lumped parameter mathematical model of Coupled Parallel Transmission system with its transmission line under mid-point fault is established for the digital simulation . Based on the known synchronous generator model and composite load model , its multi-module-coupling model for digital real-time simulation is developed .