户用光伏接入的低压配电网电能质量问题分析与附加损耗量化评估
CSTR:
作者:
作者单位:

(1.湖南大学电气与信息工程学院,湖南 长沙 410082;2.国网江苏省电力有限公司电力科学研究院,江苏 南京 211103;3.国网湖南省电力有限公司电力科学研究院,湖南 长沙 410017)

通讯作者:

李 勇(1982—),男,博士,教授,博士生导师,主要从事能源电力系统稳定性分析与控制、电能变换系统与装备、电能质量分析与控制等方面的研究;E?mail:yongli@hnu.edu.cn

中图分类号:

TM712

基金项目:

国家电网有限公司科技项目(5400?202318203A?1?1?ZN)


Analysis of power quality issues and quantitative evaluation of additional losses in low voltage distribution networks connected to household photovoltaics
Author:
Affiliation:

(1.College of Electrical and Information Engineering, Hunan University, Changsha 410082, China; 2.Electric Power Research Institute, State Grid Jiangsu Electric Power Co., Ltd., Nanjing 211103, China; 3. Electric Power Research Institute, State Grid Hunan Electric Power Co., Ltd., Changsha 410017, China)

  • 摘要
  • | |
  • 访问统计
  • |
  • 参考文献 [20]
  • | |
  • 引证文献
  • | |
  • 文章评论
    摘要:

    针对户用光伏的大量无序接入导致低压配电网附加损耗严重增大的问题,对配电网附加损耗的量化分析是实现电力系统节能降损的必要途径之一。以户用光伏接入电网后的附加损耗为对象,研究考虑户用光伏发电与配电线路附加损耗的量化关系。首先,对户用光伏接入下附加损耗的变化表征进行理论分析,建立有源低压配电网三相四线制等效电路与数学模型;然后,研究户用光伏不同容量与接入相序下的多类型电能质量扰动情况,建立复合电能质量扰动附加损耗模型;最后,依据典型日的光伏出力功率曲线与附加损耗模型,通过算例分析并验证了所提长时间尺度下户用光伏对配电网附加损耗的量化评估方法的准确性。

    Abstract:

    Quantitative analysis of additional losses in low-voltage distribution networks is one of the necessary ways to achieve energy conservation and loss reduction in power systems, in response to the serious increase in additional losses caused by the disorderly access of household photovoltaics. This paper focuses on the quantitative relationship between the additional losses of household photovoltaic power generation and distribution lines after being connected to the power grid. Firstly, a theoretical analysis is conducted on the changes in characterization of additional losses for household photovoltaic (PV) access. An equivalent circuit and mathematical model are established for active low-voltage distribution networks with three-phase four-wire systems. Secondly, the study investigates the disturbance of multiple types of power quality under different capacities and phase sequences of household PV and establishes a composite power quality disturbance additional loss model. Finally, based on the typical daily PV power output curve and additional loss model, the accuracy of the proposed quantification evaluation method for household PV's additional losses in distribution networks is analyzed and verified through case studies.

    参考文献
    [1] 董坤,赵剑锋,孙睿晨,等.含新型负荷元件的电力负荷建模方法研究现状与展望[J].电力系统自动化,2023,47(23):70-83. DONG Kun,ZHAO Jianfeng,SUN Ruichen,et al.Research status and prospects of modeling methods for power loads with new load elements[J].Automation of Electric Power Systems,2023,47(23):70-83.
    [2] 钟浩,舒栋,张磊,等.考虑电能质量的配电网增值服务双层优化模型[J].电力系统保护与控制,2023,51(23):16-25. ZHONG Hao,SHU Dong,ZHANG Lei,et al.A two-layer optimization model of value-added service in a distribution network considering power quality[J].Power System Protection and Control,2023,51(23):16-25.
    [3] 尹忠东,张静.复合电能质量扰动下配电网关键设备附加损耗的研究[J].电气应用,2019,38(3):12-20. YIN Zhongdong,ZHANG Jing.Study on additional loss of key equipment in distribution network under complex power quality disturbance[J].Electrotechnical Application,2019,38(3):12-20.
    [4] ALQUTHAMI T,RAVINDRA H,FARUQUE M O,et al.Study of photovoltaic integration impact on system stability using custom model of PV arrays integrated with PSS/E[C]//North American Power Symposium.Arlington,USA:IEEE,2010:1-8.
    [5] 陈灵,黄兴华,张功林,等.考虑削峰填谷的分布式电源集群协同控制方法[J].智慧电力,2023,51(4):8-15. CHEN Ling,HUANG Xinghua,ZHANG Gonglin,et al.Distributed generations clusters collaborative control method considering peak load shifting[J].Smart Power,2023,51(4):8-15.
    [6] 张尔佳,余墨多,黄文焘,等.谐波电流注入式微电网主动保护方法[J].电力系统自动化,2023,47(23):172-179. ZHANG Erjia,YU Moduo,HUANG Wentao,et al.Active protection method for microgrids based on harmonic current injection[J].Automation of Electric Power Systems,2023,47(23):172-179.
    [7] 周荔丹,许健,姚钢,等.船舶综合能源管理系统研究综述[J].电力系统保护与控制,2022,50(13):171-186. ZHOU Lidan,XU Jian,YAO Gang,et al.Review of integrated energy management systems for a marine microgrid[J].Power System Protection and Control,2022,50(13):171-186.
    [8] 路怡.含光伏电源配电网的无功优化研究[D].杭州:浙江大学,2021.LU Yi.Research on reactive power optimization of the distribution network with photovoltaic power sources[D].Hangzhou:Zhejiang University,2021.
    [9] 侯永全,张勇,袁朋生.低压分布式光伏并网对配电网网损的影响研究[J].能源与节能,2023(5):47-50. HOU Yongquan,ZHANG Yong,YUAN Pengsheng.Influence of low-voltage distributed photovoltaic grid connection on distribution network loss[J].Energy and Energy Conservation,2023(5):47-50.
    [10] 魏超峰,李琼林,蒋建东,等.计及谐波因素的配电网损耗量化计算与建模仿真[J].郑州大学学报(工学版),2018,39(1):53-58+66. WEI Chaofeng,LI Qionglin,JIANG Jiandong,et al.Quantification calculation and modeling simulation of distribution network losses considering harmonic factor[J].Journal of Zhengzhou University (Engineering Science),2018,39(1):53-58+66.
    [11] 李琼林,刘书铭,温佳静,等.计及电能质量影响的10 kV配电网损耗计算模型及其实验验证[J].电力自动化设备,2022,42(1):212-220. LI Qionglin,LIU Shuming,WEN Jiajing,et al.Calculation model of 10 kV distribution network loss considering power quality impact and its experimental verification[J].Electric Power Automation Equipment,2022,42(1):212-220.
    [12] 王二威,秦亮,皇甫成,等.基于空间分布和时序特征的配电网台区三相不平衡调整方法[J].电力系统自动化,2023,47(19):97-105. WANG Erwei,QIN Liang,HUANGFU Cheng,et al.Three-phase unbalance adjustment method for distribution station areas based on spatial distribution and time-series characteristics[J].Automation of Electric Power Systems,2023,47(19):97-105.
    [13] 魏杏,阮绍炯,曾小兰,等.分布式光伏接入对配电网电压质量的影响分析[J].电气开关,2023,61(3):94-97+102. WEI Xing,RUAN Shaojiong,ZENG Xiaolan,et al.Analysis of the influence of distributed photovoltaic access on voltage quality of the distribution network[J].Electric Switchgear,2023,61(3):94-97+102.
    [14] 王倍倍,蒋建东.计及复合电能质量的配电网附加损耗量化计算与建模仿真[J].电力电容器与无功补偿,2022,43(4):52-59. WANG Beibei,JIANG Jiandong.Quantitative calculation and modeling simulation of additional loss in distribution network considering composite power quality[J].Power Capacitor & Reactive Power Compensation,2022,43(4):52-59.
    [15] YIN Z D,ZHANG J,DONG Y X.Decoupling analysis of additional loss of key equipment in low voltage distribution network under complex power disturbance[C]//2018 2nd IEEE Conference on Energy Internet and Energy System Integration (EI2).Beijing,China:IEEE,2018:1-6.
    [16] 伊慧娟.基于最优特征集与改进KELM的复合电能质量扰动辨识[D].长沙:湖南大学,2021. YI Huijuan.Identification of compound power quality disturbance based on optimal feature set and improved kernel extreme learning machine[D].Changsha:Hunan University,2021.
    [17] 韦钢,陈森环,蔡阳,等.基于瞬时无功功率理论的三相不平衡负荷补偿[J].电力自动化设备,2010,30(2):59-63. WEI Gang,CHEN Senhuan,CAI Yang,et al.Compensation for three-phase unbalanced load based on instantaneous reactive power theory[J].Electric Power Automation Equipment,2010,30(2):59-63.
    [18] ZHENG X Y,WU M,JI Y,et al.Research on influence of distributed generation on distribution network loss and evaluation method[C]//2017 IEEE Conference on Energy Internet and Energy System Integration (EI2).Beijing,China.IEEE,2017:1-6.
    [19] 柴园园,刘一欣,王成山,等.含不完全量测的分布式光伏发电集群电压协调控制[J].中国电机工程学报,2019,39(8):2202-2212+3. CHAI Yuanyuan,LIU Yixin,WANG Chengshan,et al.Coordinated voltage control for distributed PVs clusters with incomplete measurements[J].Proceedings of the CSEE,2019,39(8):2202-2212+3.
    [20] 梁志峰,夏俊荣,孙檬檬,等.数据驱动的配电网分布式光伏承载力评估技术研究[J].电网技术,2020,44(7):2430-2439. LIANG Zhifeng,XIA Junrong,SUN Mengmeng,et al.Data driven assessment of distributed photovoltaic hosting capacity in distribution network[J].Power System Technology,2020,44(7):2430-2439.
    相似文献
    引证文献
引用本文

韩 宇,周 前,李 勇,等.户用光伏接入的低压配电网电能质量问题分析与附加损耗量化评估[J].电力科学与技术学报,2024,(3):177-186.
HAN Yu, ZHOU Qian, LI YONG, et al. Analysis of power quality issues and quantitative evaluation of additional losses in low voltage distribution networks connected to household photovoltaics[J]. Journal of Electric Power Science and Technology,2024,(3):177-186.

复制
分享
文章指标
  • 点击次数:185
  • 下载次数: 204
  • HTML阅读次数: 0
  • 引用次数: 0
历史
  • 在线发布日期: 2024-07-25
文章二维码