功率电压变换策略对配电网动态调节的可行性分析
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摘要
系统中引起电压跌落的原因很多,分散电路接入电网的瓶颈之一也是电网电压问题。随着大型用电器的推广,其配电网的有功/无功调节能力可以用来改善电压质量。本文从工程实际出发,首先建立了含有电压源型PWM整流器、移相全桥ZVS直流变换器的配电网模型,然后提出了一种结合电压下垂控制和无功支持的电压调节控制模型,将所搭建的模型接入标准配电网中进行验证。仿真结果表明,该模型可以通过灵活控制配电网功率,改善配电网电压质量,同时提高了薄弱配电网对分散电路负荷所容许接入的比例。
There are many causes of voltage sags in the system, and one of the bottlenecks of the distributed circuit access to the grid is the voltage of the power grid. With the popularization of large-scale electric appliances, the active/reactive power regulation capability of the distribution network can be used to improve the voltage quality. This paper, firstly, the model of distribution network containing phase voltage source PWM rectifier, ZVS full bridge converter is established, and then proposes a combined voltage droop control and reactive power support voltage regulation control model, to verify the distribution network model and builds in the access standard. The simulation results show that the model can flexibly control the power distribution network, improve the voltage quality of distribution network, and increase the allowable access ratio of the distribution network to the distributed circuit load.
There are many causes of voltage sags in the system, and one of the bottlenecks of the distributed circuit access to the grid is the voltage of the power grid. With the popularization of large-scale electric appliances, the active/reactive power regulation capability of the distribution network can be used to improve the voltage quality. This paper, firstly, the model of distribution network containing phase voltage source PWM rectifier, ZVS full bridge converter is established, and then proposes a combined voltage droop control and reactive power support voltage regulation control model, to verify the distribution network model and builds in the access standard. The simulation results show that the model can flexibly control the power distribution network, improve the voltage quality of distribution network, and increase the allowable access ratio of the distribution network to the distributed circuit load.
引文
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[13]唐梦娴,鄢笠.基于双闭环控制的单相PWM整流电路设计[J].仪表技术,2014,(1):28-30.
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[15]刘代,金邹伟,张峰.基于前馈-反馈综合控制的SG-Ⅱ升级装置腔空间滤波器远场串并行自动准直[J].中国激光,2016,(1):17-25.
[16]樊英杰,张开如,韩璐.基于优化SVPWM三相VSR的仿真与研究[J].电测与仪表,2015,(12):40-45.
[17]石勇.宽ZVS负载范围4开关三电平直流变换器[J].电源学报,2012,10(6):83-91.
[18]杨航,刘凌,阎治安.双闭环Buck变换器系统模糊PID控制[J].西安交通大学学报,2016,50(4):35-40.
[2]李翔,顾洁.运用聚类算法预测地区电网典型日负荷曲线[J].电力与能源,2013,34(1):47-50.
[3]韩忠华,董晓婷,史海波.改进DE算法求解混合流水车间负荷平衡问题[J].计算机集成制造系统,2016,22(2):547-557.
[4]蒋东东,吴敏辉,邵振国.谐波污染用户建模及危害评估[J].电力科学与工程,2014,(1):32-37.
[5]陈国栋,朱淼,蔡旭.一种软件锁相环和电压跌落检测新算法[J].中国电机工程学报,2014,34(25):4385-4394.
[6]毛涛,乐健,黄银龙.基于实时监测数据校验的配电系统电压跌落仿真系统研究[J].电力系统保护与控制,2014,(3):122-127.
[7]任洪伟,韩丛英,裴玮.基于多目标优化模型的分布式电源选址方案研究[J].电力系统保护与控制,2013,(24):64-69.
[8]韩俊峰,班淑珍.公共直流母线在变速箱加载试验台中的应用[J].科技通报,2016,32(9):113-116.
[9]庄海峰,胡振斌,王承玉,程卫东,吴哲,叶云,李小省,刘冠廷.配电网中三相不平衡动态功率调节装置的应用研究[J].电源世界,2017,(1):46-49.
[10]陈旭,张勇军,黄向敏.主动配电网背景下无功电压控制方法综述[J].电力系统自动化,2016,(1):143-151.
[11]郭文娇,任春光,王磊,韩肖清,赵耀民.电压不平衡时交直流双向功率变换器的控制策略[J].电网技术,2016,(3):925-930.
[12]马向华,赵付田,叶银忠.基于共直流母线供电的自动扶梯节能传动系统设计[J].电气传动,2012,42(3):20-26.
[13]唐梦娴,鄢笠.基于双闭环控制的单相PWM整流电路设计[J].仪表技术,2014,(1):28-30.
[14]程红,王聪,葛标.输出本安型准Z源Buck变换器CCM模式小信号建模与控制[J].电工技术学报,2013,28(3):222-227.
[15]刘代,金邹伟,张峰.基于前馈-反馈综合控制的SG-Ⅱ升级装置腔空间滤波器远场串并行自动准直[J].中国激光,2016,(1):17-25.
[16]樊英杰,张开如,韩璐.基于优化SVPWM三相VSR的仿真与研究[J].电测与仪表,2015,(12):40-45.
[17]石勇.宽ZVS负载范围4开关三电平直流变换器[J].电源学报,2012,10(6):83-91.
[18]杨航,刘凌,阎治安.双闭环Buck变换器系统模糊PID控制[J].西安交通大学学报,2016,50(4):35-40.