含光伏低压配电网边端功率-电压控制方法  

Edge-Side Power-Voltage Control Method of Low Voltage Distribution Network with PV Systems

作　　者：李浩 曹华珍 吴亚雄 张俊潇 成润婷 曾庆彬 LI Hao;CAO Huazhen;WU Yaxiong;ZHANG Junxiao;CHENG Runting;ZENG Qingbin(Power Grid Planning Research Center of Guangdong Power Grid Co.,Ltd.,Guangzhou 510062,China;Guangzhou Power Electric Technology Co.,Ltd.,Guangzhou 510640,China)

机构地区：[1]广东电网有限责任公司电网规划研究中心,广州510062 [2]广州市奔流电力科技有限公司,广州510640

出　　处：《南方电网技术》2022年第11期139-148,共10页Southern Power System Technology

基　　金：广东电网有限责任公司电力规划专题(031000QQ00210007)。

摘　　要：可再生能源高渗透背景下,低压配电网电压越限、三相不平衡、配电变压器过载等运行问题进一步加剧。针对低压配电网拓扑不清晰、运行方式变化频繁的特点,提出了基于配电物联网体系的低压配电网边端功率-电压运行控制方法。首先,将光伏纳入边-端体系,通过拓扑自动识别搭建低压配电网边端分布式控制通信架构,建立多模态分布式控制模型,进一步提高最大可再生能源消纳。然后,提出配电变压器运行约束下功率控制方法,实现配电网台区功率交换控制。最后,提出该通信架构下受控点选择原则,进行通信网络权值优化与稳定性分析。通过仿真分析,验证了所提方法可行性与优越性,可满足低压配电网灵活运行要求。With numbers of renewable energy generations penetrating low-voltage networks,the operation problems of low-voltage distribution networks,such as low voltage ride-through,three-phase unbalance and distribution transformer overload,are further aggravated.Because of the characteristics of unclear topology and frequent changes in operation modes of low voltage distribution,an edge-end power-voltage operation control method based on the Internet of Things under distribution network is proposed.Firstly,these photovoltaics are incorporated into the edge-end system,and the edge-end distributed communication architecture of low voltage network is established through topology identification.Based on that,a multi-mode distributed control model is established to further improve the maximum renewable energy consumption.Then,a power control method under transformer operation constraints is proposed to realize power exchange control of the power control center in the distribution network.Finally,this paper provides the principle of controlled point selection,optimizes the weight of the communication network and analyses the system stability.The feasibility and superiority of the proposed method are verified by simulation analysis.

关 键 词：高渗透光伏 边端分布式 多模态控制 配变功率控制 配电网 

分 类 号：TM714[电气工程—电力系统及自动化]