Optimization of Resistive Superconducting Fault Current Limiter Considering Protection Coordination in Medium-Voltage Distribution Networks

doi:10.16628/j.cnki.2095-8188.2025.09.005

Abstract

Abstract:

The integration of distributed generation (DG) has significantly improved the utilization efficiency of renewable energy sources, but it has also posed new challenges to the safe and stable operation of medium-voltage distribution networks, especially regarding the reliable operation of protection devices.The resistive superconducting fault current limiter (RSFCL) can effectively control the abnormal growth of current and solve the above problems through coordinated operation with protection devices. The 10 kV distribution network is focused on and the optimal configuration of RSFCL is investigated.The impact of DG integration on current protection is analyzed,the corresponding mathematical model is constructed, and the superconducting fault current limiter is incorporated into the model to limit the growth of current.Furthermore, a pre-selection scheme for the installation location of the current limiter based on sensitivity analysis is proposed to address the optimal configuration problem under the scenario of multi-point DG integration and the peafowl optimization algorithm is used to solve the optimal configuration of the current limiter.The simulation results verify the effectiveness of the proposed configuration scheme in solving the problem in this scenario.

Key words: resistive superconducting fault current limiter (RSFCL), distributed generation (DG), relay protection, optimal configuration, peafowl optimization algorithm (POA)

CLC Number:

TM71

CHU Linlin, CHEN Yanjun, ZONG Ming, DUAN Ruochen, GU Jie, JIN Zhijian, LIU Yiting. Optimization of Resistive Superconducting Fault Current Limiter Considering Protection Coordination in Medium-Voltage Distribution Networks[J]. LOW VOLTAGE APPARATUS, 2025, 0(9): 40-49.

Figures/Tables 13

References 27

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保护所在线路	I段整定值	Ⅲ段整定值
1-2	2 451.9 A/0 s	192.2 A/2.5 s
2-3	2 230.5 A/0 s	182.2 A/2.0 s
5-6	1 921.5 A/0 s	169.2 A/1.5 s
6-7	1 510.2 A/0 s	156.3 A/1.0 s
9-10	1 193.2 A/0 s	128.5 A/0.5 s
21-22	2 559.3 A/0 s	232.5 A/2.0 s
23-24	2 298.1 A/0 s	201.3 A/1.5 s
26-27	1 810.3 A/0 s	180.2 A/1.0 s
27-28	1 556.3 A/0 s	165.7 A/0.5 s
39-40	2 562.9 A/0 s	211.3 A/2.0 s
40-41	2 131.5 A/0 s	191.7 A/1.5 s
42-43	1 772.2 A/0 s	165.2 A/1.0 s
47-48	1 256.3 A/0 s	132.8 A/0.5 s

排序	支路	灵敏度/%
1	2-15	12.08
2	40-49	11.52
3	26-35	10.98
4	1-2	7.67
5	39-40	5.32

RSFCL安装位置	是否接入RSFCL	RSFCL超导带材长度/m
2-15	是	123.7
40-49	是	65.1
26-35	是	77.2
1-2	否	0
39-40	否	0

是否预选址	RSFCL安装支路	迭代次数	目标函数
是	2-15、40-49、26-35	43	0.529
否	2-15、40-49、26-35	81	0.529

权重 (α/β)	RSFCL安装支路 (各支路带材长度/m)	F₁	F₂	保护灵敏度	目标函数
0.7/0.3	2-15(110.7) 40-49(32.5)	0.351	0.745	1.342	0.469
0.4/0.6	2-15(123.7) 40-49(65.1) 26-35(77.2)	0.435	0.592	1.689	0.529
0.3/0.7	2-15(152.6) 40-49(70.5) 26-35(79.9)	0.495	0.578	1.73	0.553