PILOT PROTECTION SCHEME FOR ACTIVE DISTRIBUTION NETWORK BASED ON CHARACTERISTIC HARMONIC DISTANCE COEFFICIENT

Dai Zhihui; Liu Meiyuan; Wei Shuqing; Wang Wenzhuo

doi:10.19912/j.0254-0096.tynxb.2024-0688

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (8) : 686-696. DOI: 10.19912/j.0254-0096.tynxb.2024-0688

PILOT PROTECTION SCHEME FOR ACTIVE DISTRIBUTION NETWORK BASED ON CHARACTERISTIC HARMONIC DISTANCE COEFFICIENT

Dai Zhihui, Liu Meiyuan, Wei Shuqing, Wang Wenzhuo

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Abstract

In order to solve the problem that the traditional longitudinal differential protection is difficult to ensure reliable operation after IIDG being massively connected to the distribution network by T connection mode, a longitudinal protection scheme of active distribution network based on active injection of characteristic harmonics is proposed. Firstly, a characteristic harmonic current injection method based on harmonic voltage control link is proposed, and the selection of its control parameters is described. Then, the fault characteristics of high-frequency characteristic harmonic voltage and current of distribution networks are analysed. On this basis, the relationship between the calculated voltage of the characteristic harmonic and the actual measured value is derived. Finally, the fault identification criterion is constructed by using the waveform distance coefficient between the characteristic harmonic voltage and the measured value. The simulation results show that the proposed scheme can operate reliably under different fault conditions, without need to obtain the operation information of T-connected IIDG in real time. The communication pressure is small, and it is still applicable in the case of a large number of T-connected IIDGs.

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power distribution networks / distributed energy / electric power systems protection / active injection / T-connected branch

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Dai Zhihui, Liu Meiyuan, Wei Shuqing, Wang Wenzhuo. PILOT PROTECTION SCHEME FOR ACTIVE DISTRIBUTION NETWORK BASED ON CHARACTERISTIC HARMONIC DISTANCE COEFFICIENT[J]. Acta Energiae Solaris Sinica. 2025, 46(8): 686-696 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0688

References

[1] 岳清, 束洪春, 孙士云, 等. 适用于全故障类型的双馈风电场送出线负序电流纵联保护方案[J]. 太阳能学报, 2024, 45(4): 214-225.
YUE Q, SHU H C, SUN S Y, et al.Negative sequence current pilot protection scheme for dfig outgoing line with all-fault types[J]. Acta energiae solaris sinica, 2024, 45(4): 214-225.
[2] 戴志辉, 李毅然, 焦彦军, 等. 基于改进差动电流函数的柔直配电线路保护原理[J]. 太阳能学报, 2024, 45(3): 326-336.
DAI Z H, LI Y R, JIAO Y J, et al.Protection scheme for flexible DC distribution lines based on improved differential current function[J]. Acta energiae solaris sinica, 2024, 45(3): 326-336.
[3] 乔一达, 吴红斌, 吴通华, 等. 含逆变型分布式电源的配电网分区域电流保护[J]. 电工技术学报, 2022, 37(S1): 134-144.
QIAO Y D, WU H B, WU T H, et al.A partitioned current protection scheme of distribution network with inverter interfaced distributed generator[J]. Transactions of China Electrotechnical Society, 2022, 37(S1): 134-144.
[4] 朱彦名, 徐潇源, 严正, 等. 面向电力物联网的含可再生能源配电网运行展望[J]. 电力系统保护与控制, 2022, 50(2): 176-187.
ZHU Y M, XU X Y, YAN Z, et al.Prospect of renewable energy integrated distribution network operation in the power Internet of Things[J]. Power system protection and control, 2022, 50(2): 176-187.
[5] 袁智勇, 徐全, 徐刚, 等. 含大容量分布式电源接入的配电网电流保护优化方案[J]. 电网技术, 2021, 45(5): 1862-1869.
YUAN Z Y, XU Q, XU G, et al.Current protection optimization scheme in distribution network with large capacity distributed generators[J]. Power system technology, 2021, 45(5): 1862-1869.
[6] 缪希仁, 赵丹, 刘晓明, 等. 含分布式电源配电网短路保护研究综述[J]. 高电压技术, 2023, 49(7): 3006-3019.
MIAO X R, ZHAO D, LIU X M, et al.A research review of short-circuit protection in distribution network with distributed generation[J]. High voltage engineering, 2023, 49(7): 3006-3019.
[7] 赵萍, 裘愉涛, 徐华, 等. 适用于多点T接的新型电流差动保护[J]. 电力系统保护与控制, 2017, 45(20): 152-157.
ZHAO P, QIU Y T, XU H, et al.A new current differential relay scheme for multi “T” nodes transmission line[J]. Power system protection and control, 2017, 45(20): 152-157.
[8] 周成瀚, 邹贵彬, 杜肖功, 等. 基于正序电流故障分量的有源配电网纵联保护[J]. 中国电机工程学报, 2020, 40(7): 2102-2112, 2390.
ZHOU C H, ZOU G B, DU X G, et al.A pilot protection method based on positive sequence fault component current for active distribution networks[J]. Proceedings of the CSEE, 2020, 40(7): 2102-2112, 2390.
[9] LI W L, HE J H, ZHANG D H, et al.Directional pilot protection based on fault current for distribution network with Distributed Generation (DG)[J]. The journal of engineering, 2017, 2017(13): 1327-1331.
[10] 刘幸蔚, 李永丽, 陈晓龙, 等. 逆变型分布式电源T接线路后纵联差动保护的改进方案[J]. 电网技术, 2016, 40(4): 1257-1264.
LIU X W, LI Y L, CHEN X L, et al.An improved scheme of longitudinal differential protection for teed lines with inverter-based distributed generations[J]. Power system technology, 2016, 40(4): 1257-1264.
[11] 戴志辉, 何静远, 王文卓, 等. 适用于逆变型分布式电源T接的配电网线路纵联保护方案[J]. 电力自动化设备, 2024, 44(5): 88-94, 119.
DAI Z H, HE J Y, WANG W Z, et al.Line pilot protection scheme for distribution network with inverter-interfaced distributed generation in T-connection mode[J]. Electric power automation equipment, 2024, 44(5): 88-94, 119.
[12] 宋国兵, 侯俊杰, 郭冰. 基于主动探测式的柔性直流电网纵联保护[J]. 电网技术, 2020, 44(10): 4001-4010.
SONG G B, HOU J J, GUO B.Pilot protection of flexible DC grid based on active detection[J]. Power system technology, 2020, 44(10): 4001-4010.
[13] 薛士敏, 刘存甲, 李蒸, 等. 基于控保协同的环形直流微网单端测距保护技术[J]. 电力系统自动化, 2020, 44(5): 122-129.
XUE S M, LIU C J, LI Z, et al.Single-end ranging protection technology for ring DC microgrid based on coordinated control and protection[J]. Automation of electric power systems, 2020, 44(5): 122-129.
[14] CHEN Z, PEI X J, YANG M, et al.A novel protection scheme for inverter-interfaced microgrid (IIM) operated in islanded mode[J]. IEEE transactions on power electronics, 2018, 33(9): 7684-7697.
[15] 李海锋, 张正刚, 梁远升, 等. 基于谐波信号注入的含逆变型分布式电源配电网电流差动保护[J]. 电力系统自动化, 2023, 47(22): 120-128.
LI H F, ZHANG Z G, LIANG Y S, et al.Current differential protection for distribution network with inverter-interfaced distributed generators based on injection of harmonic signal[J]. Automation of electric power systems, 2023, 47(22): 120-128.
[16] 方重凯, 牟龙华, 欧锐, 等. 基于控保协同的微电网注入式保护方法研究[J]. 中国电机工程学报, 2023, 43(9): 3389-3402.
FANG C K, MU L H, OU R, et al.Research on control-protection coordination based on injection protect scheme of microgrid[J]. Proceedings of the CSEE, 2023, 43(9): 3389-3402.
[17] 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 E J, YU M D, HUANG W T, et al.Active protection method for microgrids based on harmonic current injection[J]. Automation of electric power systems, 2023, 47(23): 172-179.
[18] 杨立明, 周浩亮, 朱振洪. 基于特征信号注入的含IIDG配电网谐波差动保护方案[J]. 电气工程学报, 2023, 18(1): 181-187.
YANG L M, ZHOU H L, ZHU Z H.Harmonic differential protection scheme based on characteristic signal injection for distribution network with IIDG[J]. Journal of electrical engineering, 2023, 18(1): 181-187.