Comparison of synthetic test circuits for ultra-high-voltage circuit breakers

The most basic transient a circuit breaker needs to suffer during its activity is the transient recovery voltage (TRV), started by the electric force system as a characteristic response on flow interference. To test high voltage CBs, direct testing utilizing the force system or short out alternators are not practical. The testing of high voltage Circuit Breakers (CBs) of bigger limit requires huge limit of testing station. An equal infusion of short out current and transient voltage to medium and high voltage circuit breaker (CB) by a synthetic model is examined. Transient recovery voltage is made by a capacitor bank and is applied to CB. An optical set off spark gap has been utilized to interrupt short circuit and to introduce of transient recovery voltage that is applied across the contacts of circuit breaker. Transient recovery voltage examination can never be done totally, as the advancement of circuit breaker development and organization configuration goes on. The most widely recognized way to deal with TRV examination is concerning the supposed planned TRV, in which a suspicion of dismissing association between circuit breaker itself and the innate system recovery voltage is being made. Notwithstanding, it actually is by all accounts qualified to examine what circuit breaker means for transient recovery voltage. An ideal grouping to open/close of reinforcement test article and helper circuit breakers inside suitable chance to infuse of recovery voltage. The impact of reactance of inductive flaw current limiter just as distance to blame in short line issue condition on pace of ascent of recovery voltage. A 4-boundaries TRV synthetic test circuit dependent on equal current infusion technique is planned and mimicked for testing 145kV rating circuit-breakers according to new TRV prerequisites given in IEC 62271-100.

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Computer Aided Design of Synthetic Test Circuits for High Voltage Circuit-Breakers

IEEE Power Engineering Review ◽

10.1109/mper.1989.4310602 ◽

1989 ◽

Vol 9 (4) ◽

pp. 63-64

Author(s):

W. P. Legros ◽

A. M. Genon ◽

M. M. Morant ◽

P. G. Scarpa ◽

R. Planche ◽

...

Keyword(s):

High Voltage ◽

Computer Aided Design ◽

Circuit Breakers ◽

Computer Aided ◽

Synthetic Test ◽

Aided Design

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Modeling and Characteristics Analysis on Hydraulic Operating Mechanism for Ultra-High Voltage Circuit Breakers

Volume 6: 14th International Conference on Multibody Systems, Nonlinear Dynamics, and Control ◽

10.1115/detc2018-85912 ◽

2018 ◽

Author(s):

Liang Liang ◽

Qiwei Lai ◽

Lin Teng ◽

James Yang ◽

Yanzhao Ma ◽

...

Keyword(s):

High Voltage ◽

Simulation Models ◽

High Standard ◽

Fast Response ◽

Industrial Applications ◽

Operating Mechanism ◽

Hydraulic Systems ◽

Circuit Breakers ◽

Characteristics Analysis ◽

Ultra High Voltage

Compared with regular mechanical operating mechanisms, the hydraulic operating mechanism has widespread industrial applications in large hydraulic systems such as ultra-high voltage circuit breakers due to its requirements of fast response, high flow rate and instantaneous super power. This paper intends to analyze the characteristics of hydraulic operating mechanism for ultra-high voltage circuit breakers from a systemic perspective. A comprehensive mathematical model of hydraulic operating mechanism system including pipelines and all valves has been developed. Meanwhile, experiments focusing on the dynamic and pressure characteristics of hydraulic operating mechanism are conducted to validate simulation models. The proposed research methods can provide significant theoretical guidance and practical value for further study of hydraulic operating mechanism of high standard hydraulic system like ultra-high voltage circuit breakers.

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