首页 | 本学科首页   官方微博 | 高级检索  
     

电流源型混合直流输电系统建模与仿真
引用本文:薛英林,徐政,潘武略,王峰.电流源型混合直流输电系统建模与仿真[J].电力系统自动化,2012,36(9):98-103.
作者姓名:薛英林  徐政  潘武略  王峰
作者单位:浙江大学电气工程学院,浙江省杭州市,310027
基金项目:国家“十一五”科技支撑计划重大项目
摘    要:为解决传统直流输电系统换相失败问题,针对电压源型混合直流输电系统存在直流故障难以处理、平波电抗与直流电容容易产生谐振、无法进行潮流反送等缺点,分析了一种新型电流源型混合直流输电系统,其特点是整流侧采用传统的电网换相换流器,逆变侧采用基于全控型器件的新型电流源型换流器。重点推导了电流源型换流器在dq旋转坐标系下的低频和稳态数学模型,并设计了相应的控制器和控制策略。在PSCAD/EMTDC中以葛南直流系统为基础搭建了电流源型混合直流系统。详细阐述了启动和潮流翻转的步骤和过程,测试了逆变侧发生三相短路故障下系统的响应和恢复特性,研究了系统的直流故障自清理能力和重启动策略。仿真结果表明,该系统具有良好的性能,是直流输电系统在远距离、大功率应用领域一种可行的改进方案。

关 键 词:混合型高压直流输电  电流源型换流器  数学模型  控制策略  启动与潮流翻转  直流故障及重启动
收稿时间:2011/4/21 0:00:00
修稿时间:4/15/2012 3:32:25 PM

Modeling and Simulation for a Hybrid Current Source Converter High Voltage Direct Current Transmission System
XUE Yinglin,XU Zheng,PAN Wulue,WANG Feng.Modeling and Simulation for a Hybrid Current Source Converter High Voltage Direct Current Transmission System[J].Automation of Electric Power Systems,2012,36(9):98-103.
Authors:XUE Yinglin  XU Zheng  PAN Wulue  WANG Feng
Affiliation:(College of Electric Engineering,Zhejiang University,Hangzhou 310027,China)
Abstract:There are a number of issues associated with the current high voltage direct current(HVDC) transmission systems,such as commutation failures,difficulties in handling DC faults,resonance between smoothing reactor at rectifier and the DC capacitor at inverter,and inability to facilitate reverse power flow.A new hybrid HVDC transmission system is proposed to overcome such issues associated with current HVDC systems.The system composes a line commutated converter(LCC) at rectifier and current source converter(CSC) at inverter based on fully controlled power electronic devices.This is suitable to solve communication failure caused by LCC.This paper focuses on setting up the low frequency and steady state mathematical mode of the CSC.Corresponding control strategies and the controller are designed as well.A hybrid CSC-HVDC based on Ge-Nan HVDC transmission system is realized by PSCAD/EMTDC.Firstly,start up and power reversal are described in detail.Secondly,transient responses and recovery characteristic under three-phase ground fault at the inverter are experimented.Furthermore,the ability to handling DC fault and re-start up strategy are also studied.The simulation results illustrate that the hybrid CSC-HVDC has a promising potential for the bulk power transmission as an improvement scheme for HVDC.
Keywords:hybrid high voltage direct current(HVDC) transmission  current source converter(CSC)  mathematical model  control strategy  start up and power reverse  DC fault and re-start up
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《电力系统自动化》浏览原始摘要信息
点击此处可从《电力系统自动化》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号