Voltage Sag Evaluation Considering Action Characteristics of Protection Based on Sequential Monte Carlo Simulation

doi:10.16628/j.cnki.2095-8188.2021.03.015

Abstract

Abstract:

Based on the characteristics of the line protection configuration scheme,the effects of different protection action characteristics on voltage sags were analyzed.The statistical model of fault information in uncertain conditions was established and a method of voltage sag evaluation based on sequential Monte Carlo simulation considering the action characteristics of line protection was proposed.The proposed method was applied to IEEE-30,and the simulation results show that the method can quantitatively calculate the voltage sag index in the time dimension.The characteristic of protection system has an obvious effect on voltage sags frequency assessment.The evaluation of voltage sag should consider the configuration of line protection,and the operating characteristics of different protections should be introduced into the evaluation model.

Key words: sequential Monte Carlo, line protection, characteristic of protection, voltage sag

CLC Number:

TM741

XU Pengcheng, LIN Yan, LIN Di, GUAN Yu, CHEN Youjian. Voltage Sag Evaluation Considering Action Characteristics of Protection Based on Sequential Monte Carlo Simulation[J]. LOW VOLTAGE APPARATUS, 2021, 0(3): 81-87.

Figures/Tables 14

References 22

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电压等级/kV	纵联保护时限/ms	阶段式保护时限/ms
电压等级/kV	纵联保护时限/ms	I段保护	II段保护
132	80	80	380
33	150	150	450

项目	数值
反时限阶段式距离保护范围/%	0~40	40~60	60~80	80~100
动作时限/ms	80	150	380	450

线路保护类型	线路
纵联保护	1-2,1-3,2-4,2-5,2-6,3-4,4-6, 5-7,6-8,6-28,6-7,8-28
阶段式保护	其余线路

电压暂降幅值/p.u.	不同电压暂降持续时间时平均暂降频次/(次·a^-1)
电压暂降幅值/p.u.	80 ms	150 ms	380 ms	450 ms
0.1~0.3	2.597	1.986	0	0
0.3~0.5	5.288	1.023	0	0
0.5~0.7	17.245	4.659	0	0
0.7~0.9	3.174	6.784	0	0

电压暂降幅值/p.u.	不同电压暂降持续时间时平均暂降频次/(次·a^-1)
电压暂降幅值/p.u.	80 ms	150 ms	380 ms	450 ms
0.1~0.3	1.454	0.868	1.206	0.727
0.3~0.5	3.299	0.549	1.997	0.493
0.5~0.7	10.071	2.992	7.458	3.022
0.7~0.9	2.016	3.894	0.802	1.896