基于动态电压恢复器的低电压穿越控制技术研究

TM86; 大规模风电接入电网给电网安全运行和管理带来了较大的挑战,新的电网导则要求风电机组应保证具备低电压穿越能力.考虑到动态电压恢复器(Dynamic Voltage Restorer,DVR)具有在短时间内快速准确进行电压补偿的优势,提出了基于动态电压恢复器的风电机组低电压穿越方案.针对DVR中滤波器带来的检测延时和衰减,采用基于瞬时无功功率理论的积分检测法,降低滤波器带来的延迟和衰减.根据DVR的控制特性,提出一种基于坐标变换的双Q-P理论的DVR控制算法,该算法可以补偿瞬时电压扰动,并且能有效改善动态电压恢复器的补偿性能.利用PSCAD/EMTDC仿真软件建立仿真模型,仿真结果表明,...

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Published in电测与仪表 Vol. 57; no. 19; pp. 105 - 110
Main Authors 黄永红, 张敬芸, 赵正晖, 黎家明
Format Journal Article
LanguageChinese
Published 江苏大学电气信息工程学院,江苏镇江212013 10.10.2020
Subjects
双Q-P控制策略
低电压穿越
瞬时无功功率理论
动态电压恢复器
Online AccessGet full text
ISSN1001-1390
DOI10.19753/j.issn1001-1390.2020.19.017

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Abstract TM86; 大规模风电接入电网给电网安全运行和管理带来了较大的挑战,新的电网导则要求风电机组应保证具备低电压穿越能力.考虑到动态电压恢复器(Dynamic Voltage Restorer,DVR)具有在短时间内快速准确进行电压补偿的优势,提出了基于动态电压恢复器的风电机组低电压穿越方案.针对DVR中滤波器带来的检测延时和衰减,采用基于瞬时无功功率理论的积分检测法,降低滤波器带来的延迟和衰减.根据DVR的控制特性,提出一种基于坐标变换的双Q-P理论的DVR控制算法,该算法可以补偿瞬时电压扰动,并且能有效改善动态电压恢复器的补偿性能.利用PSCAD/EMTDC仿真软件建立仿真模型,仿真结果表明,电网发生短路故障时,DVR能快速检测电压变化并且准确补偿所需电压,获得理想的瞬态特性,协助改善风电机组的低电压穿越性能.
AbstractList TM86; 大规模风电接入电网给电网安全运行和管理带来了较大的挑战,新的电网导则要求风电机组应保证具备低电压穿越能力.考虑到动态电压恢复器(Dynamic Voltage Restorer,DVR)具有在短时间内快速准确进行电压补偿的优势,提出了基于动态电压恢复器的风电机组低电压穿越方案.针对DVR中滤波器带来的检测延时和衰减,采用基于瞬时无功功率理论的积分检测法,降低滤波器带来的延迟和衰减.根据DVR的控制特性,提出一种基于坐标变换的双Q-P理论的DVR控制算法,该算法可以补偿瞬时电压扰动,并且能有效改善动态电压恢复器的补偿性能.利用PSCAD/EMTDC仿真软件建立仿真模型,仿真结果表明,电网发生短路故障时,DVR能快速检测电压变化并且准确补偿所需电压,获得理想的瞬态特性,协助改善风电机组的低电压穿越性能.
Author 赵正晖
黎家明
张敬芸
黄永红
AuthorAffiliation 江苏大学电气信息工程学院,江苏镇江212013
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Li Jiaming
Huang Yonghong
Zhang Jingyun
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Keywords 双Q-P控制策略
低电压穿越
瞬时无功功率理论
动态电压恢复器
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Title 基于动态电压恢复器的低电压穿越控制技术研究
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