摘要
目前,关于电压偏差的相关标准主要关注单一节点特定时刻,对于配电网整体电压偏差水平的评价较为少见。为此,提出了一种涵盖电压偏差时空分布特性的综合电压偏差评价方法并加以应用。首先,阐述了电压偏差及评价指标的分级方法与分级依据。其次,扩展了电压偏差定义的描述方法,将单一基准值扩展为参考面,并基于此,总结了时间维度、空间维度及同时考虑时空双维度的多种综合电压偏差评价方法,以及其他评价配电网电压整体安全水平的相关指标。最后,计算了三种不同配置场景下配电网的综合电压偏差及相关指标,并对其整体电压偏差水平进行了评价。应用所提评价方法与指标能够直观地反映配电网电压偏差的整体水平,为分布式电源和储能配置方案的进一步优化,以及配电网改造和治理提供参考。
At present,the relevant standards on voltage deviation mainly focus on the specific time of a single node,and the evaluation of the overall voltage deviation level of the distribution network is relatively rare.A comprehensive voltage deviation evaluation method covering the temporal and spatial distribution characteristics of voltage deviation is proposed and applied.Firstly,the classification method and classification basis of voltage deviation and evaluation index are described.Secondly,the description method of voltage deviation definition is expanded after the single reference value is extended to the reference plane.Based on this,multiple comprehensive voltage deviation evaluation methods considering the temporal dimension,spatial dimension,both spatial and temporal dimensions and other related indicators to evaluate the overall safety level of the distribution network voltage are summarized.Finally,the comprehensive voltage deviation and related indexes of the distribution network in three different configuration scenarios are calculated,and the integrity of the voltage deviation is evaluated.The evaluation methods and indexes proposed in this paper can intuitively reflect the overall level of voltage deviation in the distribution network,which can provide reference for further optimization of distributed power supply and energy storage configuration scheme and distribution network transformation and governance.
作者
周雨桐
田品慧
朱永强
夏瑞华
ZHOU Yutong;TIAN Pinhui;ZHU Yongqiang;XIA Ruihua(School of Electrical and Electronic Engineering,North China Electric Power University,Beijing 102206,China;State Grid Hebei Tangshan Power Supply Company,Tangshan 063000,China)
出处
《电气应用》
2025年第6期20-28,共9页
Electrotechnical Application
基金
国家自然科学基金重点资助项目(51037004)
国家自然科学基金(51077097)
天津市科技支撑计划重点资助项目(10ZCKFGX02800)。
关键词
综合电压偏差
电能质量
综合评价
comprehensive voltage deviation
power quality
comprehensive evaluation
作者简介
周雨桐(2001-),女,硕士研究生,研究方向为新能源发电与并网技术;朱永强(1975-),男,博士,副教授,研究方向为交直流微电网、新能源发电与并网技术、综合能源系统。
