特高压直流输电系统实时数字仿真研究

基于RTDS仿真器和南瑞继保公司研制的±800kV直流控制保护样机搭建了云广特高压直流输电系统“孤岛”运行方式实时闭环仿真模型。利用该仿真系统对云广直流单电气元件特性、云广直流输电系统稳态潮流和暂态故障进行了仿真，并与非实时电磁暂态软件EMTDC仿真结果进行了对比。结果显示，2种仿真工具模拟的电气元件特性、系统稳态潮流和暂态特征基本一致，表明了搭建的实时闭环云广直流输电系统的可信性。由于考虑了实际特高压直流控制保护设备的作用，所搭建的实时闭环仿真系统更能反映实际交直流系统的动态特性，具备更实际的参考价值。闭环云广直流输电仿真系统已成功应用于云广特高压直流输电工程相关的多项关键科研项目，为云广特高压直流输电系统的建设和运行提供了有力的技术支持。

Simulation of ±800 kV UHVDC Transmission System Based on RTDS

Based on the RTDS and the +800 kV UHVDC control and protection equipment designed by Nari-Relays Electric Co.,Ltd,the real time closed loop simulation model of Yunnan-Guangdong +800 kV UHVDC transmission system is developed.For verifying the validity and creditability of the proposed model,the electrical characteristics of the single component,the system power flow and transient characteristics are simulated and compared with the simulation results of EMTDC.The compared results show that these characteristi...