高压直流输电基本测试系统  

Basic Test Systems for HVDC

作　　者：张哲任[1] 徐政[1] 徐雨哲 王世佳[1] ZHANG Zheren;XU Zheng;XU Yuzhe;WANG Shijia(College of Electric Engineering,Zhejiang University,Hangzhou,Zhejiang 310027,China)

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《广东电力》2018年第9期2-12,共11页Guangdong Electric Power

基　　金：国家电网有限公司总部科技项目(5211011600R4);国家863高技术基金项目(2011AA05A119)

摘　　要：为了便于在远距离大容量输电场景下研究直流输电技术,提出了基于3种技术方案的高压直流输电(high voltage direct current,HVDC)基本测试系统。首先介绍了测试系统的基本情况,包括交流系统和直流系统的主电路参数;再分别对3种技术方案进行分析,包括基于电网换相型换流器(line commutated converter,LCC)的高压直流系统(LCC-HVDC)、基于模块化多电平换流器(modular multilevel converter,MMC)的高压直流系统(MMC-HVDC)和LCC-MMC混合型HVDC系统;然后分别介绍了LCC换流站和MMC换流站的控制器结构,并给出了所有控制器的典型参数;最后,通过电磁暂态软件PSCAD/EMTDC搭建了HVDC基本测试系统的数字仿真平台,针对换流站母线多种典型交流故障和直流线路故障进行仿真,给出了测试系统在不同故障下的详细波形。所提出的测试系统不仅可以用来比较不同控制策略的性能,也可以用作仿真程序或仿真器的参考算例。To study DC transmission technology in the circumstance of long-distance and large-capacity power transmission, this paper presents basic test systems for high voltage direct current （HVDC） based on three technical schemes. It firstly introduces general information of test systems including parameters of main circuits of the AC system and the DC system. Then it respectively analyzes three technical schemes including the line commutated converter based HVDC （LCC-HVDC）, modular multilevel converter based HVDC （MCC-HVDC） and LCC-MMC hybrid HVDC. It also introduces structures of controllers in the LCC converter station and the MMC converter station, and provides typical parameters of all controllers. Finally, it builds the time-domain simulation platform for HVDC basic test systems by using the electromagnetic transient software PSCAD/EMTDC. Aiming at multiple typical busbar AC faults and DC line fault, it makes simulations and obtains detailed waveforms of test systems under different faults. It has proved the proposed test systems could be used for comparing performance of different control strategies and as reference examples for simulation programs or simulators.

关 键 词：高压直流输电 基本测试系统 电网换相型换流器 模块化多电平换流器 混合拓扑结构 

分 类 号：TM744.1[电气工程—电力系统及自动化]