Research on voltage control of distribution networks with high-proportion household photovoltaics based on cluster division

doi:10.3969/j.issn.2097-0706.2025.02.006

Abstract

Abstract:

In a distribution network with a high proportion of household photovoltaic access， changes in source and load characteristics lead to numerous over-limit voltages， necessitating an effective voltage control method for distribution networks. In this study， a comprehensive division index， considering electrical modularity index， coupling degree index and power balance index， was established to realize the cluster division of a distribution network with a high proportion of household photovoltaics. Among the nodes with energy storage systems in each cluster， key control nodes in each cluster were selected using active-voltage sensitivity. Considering energy storage for voltage regulation， under the constraints of energy storage charging and discharging operations， a voltage control model based on cluster division was constructed with the minimum voltage deviation and network loss as the objectives. According to the power demand of the clusters containing the nodes with over-limit voltage， the energy storage systems at the key control nodes were preferentially regulated to realize effective voltage control. The IEEE 33 node system with a high proportion of household photovoltaics and energy storage system access was analyzed to verify the effectiveness of the voltage control method for the distribution network based on cluster division.

Key words: voltage control of distribution network, high-proportion household photovoltaics, energy storage system, cluster division, key control node

CLC Number:

TM712

FENG Kan, WEI Libao, WU Zhaobin, LIU Wenjin, XU Qing, HAO Guojie. Research on voltage control of distribution networks with high-proportion household photovoltaics based on cluster division[J]. Integrated Intelligent Energy, 2025, 47(2): 60-70.

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节点	DPV	节点	DPV
1	600	18	250
3	250	21	600
5	300	23	250
6	600	25	200
8	30	27	200
11	600	29	250
13	300	32	600
15	600

所属集群	储能节点	灵敏度
1	2	0.023 66
2	20	0.024 20
3	7	0.031 72
3	26	0.029 96
4	28	0.034 23
4	30	0.032 66
5	9	0.035 79
5	10	0.033 73
6	14	0.044 66
6	16	0.043 22

α/β	13：00电压偏差最大值（标幺值）	全天网络损耗/MW
0.5/0.5	0.016 2	2.964
0.7/0.3	0.015 1	3.048
0.8/0.2	0.014 5	3.154