Simulation Analysis of Impact of Distribution Photovoltaic Access on Relay Protection

doi:10.3969/j.issn.1008-0198.2022.03.017

Abstract

Abstract: Under the circumstance of peak carbon dioxide emissions and carbon neutrality, various of challenges appear during conversion from conventional distribution system to new distribution system. The access of distributed photovoltaic(PV) changes the characteristic of single source and unidirectional power flow in distribution network. Current protection and reclosing can not longer adapt to new distribution system which integrates source, grid, load and storage. Based on the simplified topology of distribution network with distributed PV, the relative position between PV and fault is assorted. The impact on relay protection is evaluated via analyzing the transient characteristic of voltage and current under different types of fault. Modeling and simulation on RTDS validate the proposed analysis of impact, lastly methods as directional protection and setting value modifying are proposed to improve the reliability of relay protection.

Key words: new distribution system, distributed photovoltaic(PV), relay protection, real time digital simulation(RTDS)

CLC Number:

HE Silin, MO Wenhui, LONG Xuemei, WANG Xiaoyuan, TANG Haiguo, YAN Yabing. Simulation Analysis of Impact of Distribution Photovoltaic Access on Relay Protection[J]. Hunan Electric Power, 2022, 42(3): 92-98.

References

[1] 韩肖清,李廷钧,张东霞,等.双碳目标下的新型电力系统规划新问题及关键技术[J].高电压技术,2021,47(9): 3036-3046.
[2] 丁明,石雪梅.新能源接入对主动配电网的影响[J].电力建设,2015,36(1): 76-84.
[3] 李叶茂,李雨桐,郝斌,等.低碳发展背景下的建筑“光储直柔”配用电系统关键技术分析[J].供用电,2021,38(1): 32-38.
[4] 董旭柱,华祝虎,尚磊,等.新型配电系统形态特征与技术展望[J].高电压技术,2021,47(9): 3021-3035.
[5] 徐杰,郁家麟,李春,等.基于电压稳定的分布式电源最大允许接入容量分析[J].湖南电力, 2021, 41(3): 21-24,29.
[6] 盖克胜.基于弃光率优化的配电网电压控制方法研究[J].湖南电力,2019,29(5): 22-26,30.
[7] 任泳橙.分布式光伏并网对配电网潮流和网损的影响及对策[J].供用电,2017,34(2): 64-68.
[8] 李振兴,田斌,尹项根,等.含分布式电源与随机负荷的主动配电网保护[J].高电压技术, 2017, 43(4): 1231-1238.
[9] 张爱兰.并网光伏电站对配电网保护影响的研究[J].湖南电力,2012,32(3): 10-13.
[10] C. D′Adamo, S. Jupe, C. Abbey. Global survey on planning and operation of active distribution networks - Update of CIGRE C6.11 working group activities[C]//CIRED 2009-20th International Conference and Exhibition on Electricity Distribution-Part 1. Prague, Czech Republic, 2009:1-4.
[11] 林霞,陆于平,吴新佳.分布式发电系统对继电保护灵敏度影响规律[J].电力自动化设备, 2009, 29(1): 54-59,64.
[12] 孔祥平,张哲,尹项根,等.含逆变型分布式电源的电网故障电流特性与故障分析方法研究[J].中国电机工程学报,2013,33(34): 65-74,13.
[13] 孙景钌,李永丽,李盛伟,等.含逆变型分布式电源配电网自适应电流速断保护[J].电力系统自动化,2009,33(14): 71-76.
[14] 朱玲玲,李长凯,张华中,等.含分布式电源的配电网方向过流保护[J].电网技术, 2009, 33(14): 94-98.
[15] 丛伟,潘贞存,王成山,等.含高渗透率DG的配电系统区域纵联保护方案[J].电力系统自动化,2009,33(10): 81-85.
[16] S. M. Brahma, A. A. Girgis.Development of adaptive protection scheme for distribution systems with high penetration of distributed generation[J].IEEE Transactions on Power Delivery,2004,19(1): 56-63.
[17] H. H. Zeineldin, H. M. Sharaf, D. K. Ibrahim, et al.Optimal Protection Coordination for MeshedDistribution Systems With DG Using Dual Setting Directional Over-Current Relays[J].IEEE Transactions on Smart Grid,2015,6(1): 115-123.
[18] C. Lal, S. Sarangi, S. R. Mohanty, et al.ANN Based Adaptive Mho Distance Protection in Distribution Network with Distributed Generations[C]//2020 IEEE 7th Uttar Pradesh Section International Conference on Electrical.Electronics and Computer Engineering (UPCON), Prayagraj, India, 2020:1-6.
[19] 张帝,唐海国,张志丹,等.湖南电网配电自动化应用实践[J].湖南电力, 2021,41(2): 74-77.
[20] T. Esram, P. L. Chapman.Comparison of Photovoltaic Array Maximum Power Point Tracking Techniques[J].IEEE Transactions on Energy Conversion, 2007,22(2): 439-449.
[21] 吴强,李欣洛,李圣清,等.LCL型光伏并网逆变器输出电流复合控制策略[J].湖南电力,2021,41(5): 36-41.