Simulation and Calculation of Interruption Process of Generator Circuit breakers Synthetic Test

doi:10.16628/j.cnki.2095-8188.2021.03.011

Abstract

Abstract:

The Weil synthetic test circuit for generator circuit breaker breaking test is built in PSCAD/EMTDC,and the simulation calculation is carried out for the TRV conditions of the auxiliary circuit breaker and the tested circuit breaker during the breaking process.The calculation results show that the TRV parameters of the auxiliary circuit breaker are far lower than the TRV reference value specified in the standard,and the TRV parameters of the tested circuit breaker meet the TRV specified in the standard reference value.Furthermore,the simulation results show that the delay time decreases with the increase of inductance,but peak voltage and peak time are basically unchanged.

Key words: generator circuit-breaker, Weil synthetic test circuit, auxiliary circuit-breaker, TRV

CLC Number:

TM561

DU Zhaoxin, ZHOU Desheng, ZOU Xiaofeng, FENG Qian. Simulation and Calculation of Interruption Process of Generator Circuit breakers Synthetic Test[J]. LOW VOLTAGE APPARATUS, 2021, 0(3): 57-60.

Figures/Tables 9

References 9

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试验条件		峰值电压 U_c/kV	峰值时间 t₃/μs	上升率 RRRV/ (kV·μs^-1)	时延t_d /μs
QF2	加电压回路	23.3	26.0	0.90	4.0
QF2	未加电压回路	12.3	25.5	0.48	2.7
QF3	预期TRV	55.4	9.0	6.11	≤1.0

电感/μH	峰值电压 U_c/kV	峰值时间 t₃/μs	上升率RRRV /(kV·μs^-1)	时延t_d /μs
1	23.3	26.0	0.90	3.7
5	23.7	25.3	0.94	1.4
10	24.0	24.7	0.97	≤1.0

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