[1]杨鹏举,王涛云,皮凯云,等.基于改进等值电阻法的含光伏配电网线损计算[J].机械与电子,2025,(06):17-24.
　YANG Pengju,WANG Taoyun,PI Kaiyun,et al.Calculation of Line Loss in Distribution Network Containing Photovoltaic Based on Improved Equivalent Resistance Method[J].Machinery & Electronics,2025,(06):17-24.
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基于改进等值电阻法的含光伏配电网线损计算()
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《机械与电子》[ISSN:1001-2257/CN:52-1052/TH]

卷:
期数:
2025年06期
页码:
17-24
栏目:
研究与设计
出版日期:
2025-06-27

文章信息/Info

Title:
Calculation of Line Loss in Distribution Network Containing Photovoltaic Based on Improved Equivalent Resistance Method
文章编号:
1001-2257 ( 2025 ) 06-0017-08
作者:
杨鹏举 1 ; 王涛云 1 ; 皮凯云 1 ; 姚 芳 1 ; 季玉琦 2 ; 万 硕 2
1. 国网上海市电力公司金山供电公司,上海 200540 ;
2. 郑州轻工业大学电气信息工程学院,河南 郑州 450002
Author(s):
YANG Pengju1 ;  WANG Taoyun1 ;  PI Kaiyun1 ;  YAO Fang1 ;  JI Yuqi2 ;  WAN Shuo2
( 1.Jinshan Power Supply Company , State Grid Shanghai Electric Power Company , Shanghai 200540 , China ;
2.School of Electrical and Information Engineering , Zhengzhou University of Light Industry , Zhengzhou 450002 , China )
关键词:
线损计算; 改进等值电阻法; 低压配电网; 分布式光伏; 三相负荷不平衡
Keywords:
line loss calculation ;  improved equivalent resistance method ;  low voltage distribution network ;  distributed photovoltaic ;  unbalanced three-phase load
分类号:
TM714.3
文献标志码:
A
摘要:
高比例分布式光伏接入配电网,易引起线路功率倒送而导致线路高损耗,传统等值电阻法不能计算光伏接入后的台区线损。提出了含光伏配电线路线损计算的改进等值电阻法,该方法根据光伏发电量与负荷用电量的关系,通过划分光伏不发电、光伏电量不倒送和光伏电量倒送等多个典型场景,充分考虑了光伏发电量本地消纳和功率倒送等情况,建立了相应的配电网线损计算模型,提出了三相负荷瞬时不平衡度系数,降低了不同时段三相不平衡的差异对线损计算结果的影响。通过某 10 节点台区配电线路的光伏不同接入位置和不同接入容量等典型场景模拟表明,光伏接入重负荷节点有利于降低线损,且线损随光伏接入容量的增加先减小后上升。该方法为分布式光伏的选址定容和台区降损节能提供决策支持。
Abstract:
When the high proportion of distributed photovoltaic ( PV ) is connected to distribution network , the power is easy to be reversed , leading to the high loss of the line.As the traditional equivalent resistance method cannot calculate the line loss with PV , an improved equivalent resistance method is proposed to calculate the line loss of PV in distribution lines.According to the relationship between PV power generation and load power consumption , several typical scenarios are divided including unable PV power generation , unable PV power back feeding and PV power back feeding.By fully considering the local absorption of PV power generation and power back feeding , the line loss calculation model of distribution network under multi scenarios is established.Besides , the instantaneous unbalance coefficient of three phase load is proposed to reduce the influence of the difference of temporal three phase unbalance on the line loss calculation result.Finally , a 10-node distribution line is taken as an example to simulate under the typical scenarios such as different PV access locations and different access capacities.The results show that PV connected to heavy load nodes is beneficial to reduce the line loss , and the line loss first decreases and then increases with the increasing of the PV connection capacity.The proposed method can provide decision support for location and capacity optimization of distributed photovoltaic generation , and the loss reduction and energy saving in station area.

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备注/Memo

备注/Memo:
收稿日期: 2024-05-20
基金项目:国网上海市电力公司科技项目( 520932220004 2 );国家自然科学基金资助项目( 62203401 )
作者简介:杨鹏举 ( 1986- ),男,河南项城人,硕士,高级工程师,研究方向为电力营销、台区线损治理。
更新日期/Last Update: 2025-07-02