特高压多端混合直流输电实时数字仿真系统  

Real-time Simulation Test System of UHV Multi-terminal Hybrid DC Transition

作　　者：范琦 张子露 翟凯 FAN Qi;ZHANG Zi-lu;ZHAI Kai(Beijing Sifang Automation Co.,Ltd.,Beijing 100085,China)

机构地区：[1]北京四方继保自动化股份有限公司,北京100085

出　　处：《电力电子技术》2020年第6期54-57,共4页Power Electronics

摘　　要：介绍了以电网换相换流器(LCC)与模块化多电平换流器(MMC)组成的特高压(UHV)多端混合直流输电系统,并搭建了基于实时数字仿真(RTDS)与物理控制保护装置的闭环试验系统。仿真系统为三端混合直流输电系统,其中送端为常规直流站,其他两端为柔性直流站,三站均为双极四阀组,每个极由双阀组串联组成。柔直阀组仿真采用RTDS的GTFPGA UNIT,子模块为全桥拓扑结构。应用该闭环测试系统进行了多端直流输电系统的解闭锁以及阀组投退的试验,为实际工程的开展提供了十分重要的数据支持。An ultra high voltage(UHV)multi-terminal hybrid direct current transmission system is introduced which is composed of line commutated converter(LCC)and modular multi-level converter(MMC).The closed-loop test system is composed of a real-time digital simulation based on real-time digital simulator(RTDS)and physical control devices.The simulation system is a three-terminal hybrid direct current transmission system,in which the sending terminal is a conventional DC station,the other two terminals are flexible direct current stations,the three stations are bipolar fourvalve group,each pole is composed of two valve groups in series.The simulation of flexible valve group adopts GTFPGA UNIT of RTDS,and the sub-module is full bridge topology.The closed-loop test system is used to test the block/deblock of multi-terminal direct current transmission system and the entry/exit of valve groups,which provides very important data support for the development of practical projects.

关 键 词：换流器 特高压多端混合直流输电 仿真 

分 类 号：TM46[电气工程—电器]