电力系统电磁暂态-机电暂态混合仿真接口原理

Principle of Interfaces for Hybrid Simulation of Power System Electromagnetic-Electromechanical Transient Process

在电力系统仿真中,如果能在一次仿真过程中同时实现大规模电网的机电暂态仿真与部分电网的详细电磁暂态仿真,那么对详细分析系统特性,特别是直流输电、FACTS元件等的特性具有重要的理论价值和现实意义。针对这一问题,笔者在比较电磁暂态仿真和机电暂态仿真模型与方法的基础上提出了一种电力系统电磁暂态-机电暂态混合仿真的通用接口方法。该方法在我国实际电网中的成功应用证明了其有效性和实用性。笔者将分三个系列进行相关讨论,此文为系列报告之一,主要提出了电磁暂态-机电暂态混合仿真的实现原理及接口模型,如接口等值电路的设计、接口交换时序的设计等。

If the electromechanical transient simulation for a large scale power grid and the detailed electromagnetic transient simulation for a specified part of power grid can be simultaneously realized during a single power system simulation process, such a simulation method will possess great theoretical and practical significances in the detailed analysis of system characteristics, especially in the analysis on characteristics of HVDC power transmission and components of FACTS. For this topic, on the basis of comparing the models and method for electromagnetic transient simulation and those for electromechanical transient simulation the authors propose a general interface method for hybrid simulation of power system electromagnetic transient and electromechanical transient processes. The effectiveness and practicality of the proposed simulation method are verified by its successful application in domestic actual power grids. The models, method and corresponding implementation cases of the hybrid simulation will be described in three serial papers. Here, in the first one of these papers the principle to implement the hybrid simulation of electromagnetic-electromechanical transient process and its interface models, e.g., the design of equivalent circuits and interchange time sequence of the interfaces, are presented.