计及分布式电源并网逆变器控制策略的配电网弹性提升方法  

A Method for Improving Resilience of Distribution Network Taking into Account the Control Strategy of Grid-connected Inverters

作　　者：刘惠聪 彭佳盛 梁晓锐 程卓 吴柏蓁 文云峰 LIU Huicong;PENG Jiasheng;LIANG Xiaorui;CHENG Zhuo;WU Bozhen;WEN Yunfeng(Shenzhen Power Supply Co.,Ltd.,Shenzhen,Guangdong 518001,China;College of Electrical and Information Engineering,Hunan University,Changsha,Hunan 410082,China)

机构地区：[1]深圳供电局有限公司,广东深圳518001 [2]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《广东电力》2024年第8期45-53,共9页Guangdong Electric Power

基　　金：中国南方电网有限责任公司科技项目(090000KK52222133/SZKJXM20222115)。

摘　　要：并网逆变器的不同控制策略会影响分布式电源的出力表现,为充分利用其灵活调控潜力,提出一种计及分布式电源并网逆变器控制策略的配电网弹性提升方法。首先,构建考虑并网逆变器控制策略的配电网弹性提升框架,在此基础上,分析并网逆变器不同控制策略下的分布式电源出力特点,明确分布式电源在孤岛和并网模式下的出力表现;其次,基于分布式电源在并网与孤岛运行模式下响应能力的差异性构建计及并网逆变器控制策略的配电网弹性提升模型,模型以系统有功功率缺额最小值为目标函数,同时考虑并网模式下运行约束和孤岛模式下频率安全问题;最后,基于改进的IEEE 33节点配电网开展算例分析,验证所提弹性提升方法的有效性。Different control strategies of grid-connected inverters will affect the output performance of distributed generation(DG).In order to make full use of its flexible control potential,this paper proposes a method to improve the resilience of distribution network taking into account the control strategy of grid-connected inverters of DG.Firstly,a distribution network resilience improvement framework considering the control strategy of grid-connected inverters is constructed.On this basis,the output characteristics of DG under different control strategies of grid-connected inverters are analyzed,and the output performance of DG under the isolated island and grid-connected mode is defined.Secondly,considering the difference of response ability of DG in grid-connected mode and isolated island mode,a distribution network resilience enhancement model is established,which takes the minimum active power deficit of the system as the objective function,and considers the operation constraints in grid-connected mode and frequency safety in isolated island mode.Finally,a case analysis is carried out based on the improved IEEE 33 node distribution network to verify the effectiveness of the proposed resilience enhancement method.

关 键 词：配电网 弹性提升 分布式电源 并网逆变器 跟网型 构网型 

分 类 号：TM73[电气工程—电力系统及自动化]