基于RTDS特高压直流控保仿真平台的锦苏特高压直流建模及仿真

Modeling and Simulation of UHVDC Transmission System from Jinping to Sunan Based on the RTDS Simulation Platform of UHVDC Control and Protection

传统对锦苏直流接入的江苏电网分析仅停留在纯数字的机电—电磁混合仿真研究,随着仿真技术的发展已不能满足分析的需要。参照锦苏工程在RTDS实时数字仿真装置中搭建了锦苏直流的一次系统,直流控保真型装置作为二次控制保护仿真系统与RTDS实时数字仿真装置构成闭环仿真平台,其性能与实际直流输电工程在控制保护功能、稳态工况和交直流故障下的行为及趋势等方面特性保持高度一致。以一次实际交流故障导致的换相失败案例为背景,分别利用该平台和传统的利用ADPSS的机电—电磁混合仿真的方法反演了故障并与实际录波进行了比对,验证了平台的精确性和可用性。

Traditional study on integration of Jiangsu power grid with DC transmission from Jinping to Sunan （Jin-Su） only stays in pure digital electromechanical-electromagnetic hybrid simulation. With the development of simula-tion technology it can＇t meet the analysis needs. Refer to the Jin-Su project the primary system of Jin-Su project isbuilt on real-time digital simulation device （RTDS）. Secondary control and protection simulation systems are builtby actual control and protection device to form a closed loop simulation platform with RTDS. Its performance re-main highly consistent with actual UHVDC project in protection functions, behavior and trends of steady-stateoperating conditions, under fault of AC and DC and other aspects of characteristics. Operating characteristics AC-DC hybrid power grid are studied. Taking a real commutation failure caused by AC fault as background the simu-lation results of the platform and traditionally ADPSS based eleetromechanical-electromagnetic hybrid simulationresults are compared with the real fault recorder. The accuracy and availability of the platform are verified.