扩展时间Petri网在仿真保护及自动装置动作逻辑中的应用

继电保护和自动装置仿真是实现调度员培训仿真(DTS)系统的重要环节。传统方法存在装 置动作过程描述困难、软件可重用性差、系统开发工作量大的问题。利用Petri网可进行离散事件 动态建模,但其在具体应用中的实现技术是一个难点。文中提出了一种基于扩展时间Petri网 (ETPN)的继电保护装置动作过程建模方法;在实现技术上,着重研究了ETPN的数据结构及主要 算法,给出了采用ETPN模拟保护及自动装置运行的主要过程。算例结果表明,ETPN是一种有 效的仿真装置动作逻辑描述方法,并可提高仿真系统开发效率

Extended Time Petri Net Applied in Action Logic Simulation of Protection and Automation Equipment in DTS

The simulation of protection and automation equipment is very important for dispatcher training simulator (DTS) . Due to the difficulty to describe the action processes of protection sets, the poor reusability of software and the heavy developing workload, often unsatisfactory performance is obtained when conventional methods are used. Though the discrete events can be modeled through Petri net, how to put it into practice is still a problem to be solved. The method of modeling the action processes of protection relaying is proposed based on the extended time Petri net (ETPN) . The data structure and the principle algorithms as well as the simulation flows of protection and automation equipment using ETPN are discussed. Results of an example demonstrate that ETPN is an effective method in describing the action logic of the devices terse to improve the efficiency in developing simulator.