电力系统自动化2016，Vol.40Issue(21)：40-46,7.DOI:10.7500/AEPS20160401007
适用于柔性高压直流输电网的直流电压下垂控制策略
DC Voltage Droop-control Strategy for VSC-based HVDC Grid
摘要
Abstract
This paper introduces a new droop-based DC voltage control method,including the dead-band,for applications to the high-voltage direct current(HVDC)grid that utilizes the voltage-sourced converter(VSC)technology.The proposed droop-control also provides autonomous power balance for the HVDC grid.The droop-control method divides the VSC stations into four groups,activates the droop-control of each group based on a pre-specified voltage margin and uses an improved power-voltage characteristic for desirable VSC station dynamic performance.The feasibility and performance of the proposed control method are evaluated based on time-domain simulation studies on the PSCAD platform,using the IEEE 39-bus system in which a five-terminal,monopolar,VSC-HVDC grid is embedded.Each VSC station is a modular multilevel converter (MMC) with 401 levels.The study results show that the proposed droop-control method enables the HVDC-AC system to reach a new steady-state after transient events.关键词
模块化多电平换流器/直流电压下垂控制/电压死区/高压直流电网Key words
modular multilevel converter/DC voltage droop-control/voltage dead-band/high-voltage direct current grid引用本文复制引用
李海峰,刘崇茹,李庚银,Iravani REZA..适用于柔性高压直流输电网的直流电压下垂控制策略[J].电力系统自动化,2016,40(21):40-46,7.基金项目
国家电网公司科技项目(SGZJ0000BGJS500265)。@@@@This work is supported by State Grid Corporation of China(No.SGZJ0000BGJS1500265) （SGZJ0000BGJS500265）
