一种基于图计算的电力系统故障建模方法

A Power System Fault Modeling Method Based on Graph Calculation

摘要:

故障建模是电力系统仿真分析的重要基础，如何快速准确对某类（N-1、N-2等）故障进行建模一直困扰电网分析人员。首先，分析了电力系统故障建模需要考虑的故障发展路径、故障动作时序两个要素，其中故障发展路径的搜索是故障建模的难点；其次，结合电力系统数据结构特征，提出了基于图计算的电力系统故障建模方法；最后，通过一个规模较大的省级电网验证了所提方法的有效性。在未来“双碳”“双高”电力系统发展的背景下，所提方法为电力系统在线、离线仿真分析所依赖的全网故障建模提供了新的思路和工具。

Abstract:

Fault modeling is crucial for power system simulation. There is no fast, accurate or complete method to model some common type faults (such as N-1 fault, N-2 fault), which troubles the system analysts. Firstly, two factors considering in fault modeling are analyzed, that is, fault route and fault action sequence, in which fault route is the difficulty of fault modeling. Secondly, a power system fault modeling method based on graph calculation is proposed with the consideration of the characteristics of power system data structure. Finally, a case of real power system is demonstrated to verify the availability of the proposed method. In future, the proposed method can be a theoretic foundation and practical tool for both online and offline power system simulation.