基于事件驱动的有源配电网多状态仿真方法

A Multi-status Simulation Method of Active Distribution Network Based on Event-Driven

由于建模方式和参数类型的差异,针对有源配电网多种典型事件的稳态仿真与动态仿真之间存在壁垒。该文提出一种基于事件驱动的有源配电网多状态仿真方法,通过对量测数据进行分析,使得仿真系统根据有源配电网运行状态的改变而自动切换模型和算法,同时降低模型切换过程导致的参数误差,从而解决稳态仿真和动态仿真相互孤立的问题,实现事件驱动的有源配电网全过程仿真。为降低模型切换过程导致的参数误差,该文分别建立有源配电网典型元件的稳态模型和动态模型,进而分析2种模型之间的参数继承关系。为确保多状态仿真被正确地、连续地进行,设计一种基于有限状态机的仿真引擎,它可以通过辨识配电网运行状态,驱动模型切换、参数继承、数据量记录方式改变等过程。所述方法已被应用于IEEE-33节点算例和我国某实际配电网算例的多事件多场景仿真,仿真结果证明了所述多状态仿真方法的有效性。

Due to the difference of modeling method and parameter type, the typical events with various time scales in active distribution network can only be simulated by steady method or dynamic method. The two methods can hardly be simulated continuously. In order to simulate typical events with multiple time scales under the same simulation framework, a multi-status simulation method of active distribution network was proposed based on event-driven. Steady model and dynamic model of typical components in active distribution network were built respectively, and then the inheritance relationship of parameters between steady model and dynamic model was analyzed to reduce the parameter error caused by model switching.A simulation engine based on finite state machine was designed to drive the process of model switching, parameter inheritance and data recording by identifying the operation status of distribution network. The multi-status simulation method is tested by using the IEEE 33-bus and an actual 62-bus distribution network.Multiple cases simulation results show the effectiveness of the method described in this paper.