摘要
随着配电网中分布式光伏的渗透率不断提高,光伏功率倒送与电压越限问题日益加剧,且各光伏的控制方式与调控潜力存在差异,导致异构光伏难以协同,影响配电网的调控与运行。因此,本文提出1种考虑异构分布式光伏电压治理潜力的配电网集群式优化调控方法。首先,针对高渗透率分布式光伏接入场景下易出现节点电压越限的问题,提出计及电压偏差灵敏度的配电网集群划分方法,实现综合考虑电压偏差、功率平衡和节点耦合程度的配电网集群划分;其次,分析异构分布式光伏有功、无功调节特性,构建其在不同运行模式下的调控模型;再次,基于同步型交替方向乘子算法,以综合运行成本和电压偏差最低为目标建立考虑异构分布式光伏电压治理潜力的配电网集群式优化调控模型;最后,以改进的IEEE33节点配电网作为算例,验证所提优化模型的有效性。结果表明,所提策略实现了异构光伏的高效管控,在保证配电网经济运行的同时,改善了配电网的电压水平。
With the increasing penetration rate of distributed photovoltaics in distribution network,the problems of photovoltaic power backflow and voltage overrun are becoming more and more serious.Meanwhile,the distribution network is faced with different control methods and regulation potentials of photovoltaic,which makes the heterogeneous photovoltaics difficult to coordinate and further affects the regulation and operation of distribution network.Therefore,an optimal regulation method for distribution network clustering(DNC)considering the voltage governance potential of heterogeneous distributed photovoltaics(HDPV)is proposed.First,to solve the problem of node voltage overrun under a scenario of the integration of high-penetration distributed photovoltaics,a DNC partitioning method considering voltage deviation sensitivity is proposed by combining the voltage deviation,power balance and node coupling degree.Second,the active and reactive power regulation characteristics of HDPV are analyzed,and a regulation model in different operation modes is established.Furthermore,based on the synchronous alter-nating direction method of multipliers,an optimal regulation method for DNC considering the voltage governance potential of HDPV is developed with an objective of minimizing the comprehensive operating cost and voltage deviation.Finally,an improved IEEE 33-node distribution network is used as an example to verify the effectiveness of the proposed optimization model,and results show that the proposed strategy realizes an efficient control of HDPV,and it can guarantee an economic operation of distribution network while improving its voltage level.
作者
兰征
杨淳智
谭仁煜
何东
易波
喻希
LAN Zheng;YANG Chunzhi;TAN Renyu;HE Dong;YI Bo;YU Xi(College of Electrical and Information Engineering,Hunan University of Technology,Zhuzhou 412007,China)
出处
《电源学报》
北大核心
2025年第3期196-207,共12页
Journal of Power Supply
基金
国家自然科学基金面上资助项目(52077072)。
关键词
功率倒送
电压越限
异构分布式光伏
电压偏差灵敏度
集群划分
优化调控
Power backflow
voltage overrun
heterogeneous distributed photovoltaics(HDPV)
voltage deviation sensitivity
cluster partitioning
optimal regulation
