异地多端电力系统实时闭环仿真测试系统

介绍一种由位于异地的多个仿真子系统构成的电力系统实时仿真测试系统，该系统采用电磁暂态建模方法，通过基于全球定位系统（GPS）的同步计算技术，实现了精确的异地同步仿真计算。介绍了仿真系统的硬件、软件和实时仿真的计算过程，仿真系统在实时仿真测试过程中通过通信交换异地保护动作信息，修正仿真网络拓扑，实现严格的闭环仿真测试。该系统适用于对变电站的成套线路主保护等装置进行实时闭环测试。

A Multi-terminal and Closed-loop Power System Real-time Testing Simulator at Different Substations

A multi-terminal and closed-loop protective relays transient testing simulator, which locates at different substations, is proposed. Based on the electromagnetic transient calculation theory, the simulator realizes the precise synchronic simulation calculation by the synchronic calculation technique of the global positioning system (GPS) modules. The hardware and software of the simulation system and the calculation process of the real-time simulation are introduced. Signals of relay tripped are exchanged between different substations by the communication during the real-time simulation testing procedure. The testing for the transmission line relays at two substations is satisfied. It is adapt to testing for the transmission line protective relays with a channel in the power substations.