南方电网技术2024，Vol.18Issue(6)：89-97,9.DOI:10.13648/j.cnki.issn1674-0629.2024.06.011
基于储能有功功率与OLTC协调的配电网电压控制
Voltage Control of Distribution Network Based on Coordination of Energy Storage Active Power and OLTC
摘要
Abstract
The high proportion of photovoltaic system connected to the distribution network causes the voltage to exceed the limit.The traditional reactive voltage adjustment scheme fails to work in the high impedance ratio distribution network.The technical scheme which uses the energy storage system to control voltage is widely adopted.However,the energy storage system in the exist-ing technical scheme may cause excessive charging and discharging problems during the voltage control process.Aiming at these problems,a voltage control strategy is proposed based on the coordination of energy storage active power and on-load tap changer(OLTC).Based on the analysis of the influence of photovoltaic connection on the voltage of distribution network,the measured volt-age data are used to control the active power of energy storage,so as to realize the rapid regulation and control of the voltage level of access nodes.At the same time,the reference values of the state of charge of energy storage are added to the OLTC control link.And the OLTC tap actions are jointly controlled by the node voltage information and the state of charge of energy storage,so as to realize the regulation and control of the overall voltage level of the distribution network and avoid excessive charging and discharging of the energy storage system.Finally,the simulation results verified in IEEE 13-node system show that the proposed strategy can solve the problem of voltage exceeding the limit in the distribution network,and avoid excessive charging and discharging of the energy storage system.So the service life of the energy storage system is extended and the rational utilization of the resources in the distribution network is realized.关键词
高比例光伏/配电网电压控制/协调电压控制/储能系统/有载调压变压器Key words
high proportion photovoltaic/voltage control of distribution network/coordinate voltage control/energy storage system/on-load tap changer分类
信息技术与安全科学引用本文复制引用
李志军,梁其琛,张家安..基于储能有功功率与OLTC协调的配电网电压控制[J].南方电网技术,2024,18(6):89-97,9.基金项目
国家自然科学基金资助项目(U20A201284). Supported by the National Natural Science Foundation of China(U20A201284). （U20A201284）
