电力系统数模混合实时仿真技术的现状与发展

电力系统实时数字仿真与物理模拟相结合可以达到优势互补、优化模拟的效果。模拟仿真器与实时数字仿真系统之间能量与信号的交换 ,是数模混合实时仿真接口的主要问题。利用替代定理 ,两者之间可以通过戴维南等值电路和诺顿等值电路进行相互表述。实时数字仿真系统与HVDC原型模拟换流器构成的混合实时仿真系统在天—广高压直流控制与保护系统测试中得到了成功应用。实时数字仿真系统与动模机组的硬件连接则需要开发背靠背变流器。提出了先进的集成混合实时仿真系统的架构 ,其对经济有效地扩大实时仿真系统的规模具有重要的意义

Present Situation and Development of Hybrid Real-Time Simulator for Power Systems

Optimal results can be obtained by the combination of physical simulation and real-time digital simulation. The exchange of energy and signal between physical simulation and digital simulation is the fundamental problem of the interface of hybrid simulation. On the basis of equivalence theory, they are represented by Thevenin equivalent and Norton equivalent in each other. The application of HVDC real-time hybrid simulator for AC/DC interconnection for the testing of control and protection system of Tian-Guang HVDC project is introduced. The DC voltage-link AC-AC converter is developed for the interconnection between real-time digital simulator and generators. As an economic way to handle large-scale testing systems in real time, the advanced real-time integrated hybrid simulator is proposed.