A Complete Strategy for Conducting Dynamic Contact Resistance Measurements on HV Circuit Breakers

Landry, M.; Turcotte, O.; Brikci, F.

doi:10.1109/tpwrd.2008.917694

Cited by 73 publications

(31 citation statements)

References 2 publications

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“…In the first category, the methods are based on measuring some parameters to recognize the present state and the degree of contacts degradation. Vibration analysis based on measuring the acoustic emission [10,11], and measuring the static and dynamic contact resistance [12][13][14][15] are considered in the first category. In the second category, the remaining lifetime is determined by considering the accumulated stress imposed to the interruption chamber components.…”

Section: A Introductionmentioning

confidence: 99%

Online Assessment of Contact Erosion in High Voltage Gas Circuit Breakers Based on Different Physical Quantities

Mohammadhosein

Niayesh

Akmal

et al. 2019

IEEE Trans. Power Delivery

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In this paper, an effort has been made to evaluate the online condition of arc contacts as a vital component of interruption chamber in high voltage puffer type SF6 circuit breakers. The relationship between eroded mass caused by shortcircuit current interruption and different thermal stress indices such as transferred electrical charge, current squared, and arc energy is investigated, by performing many experiments with different current amplitudes and arcing times. It is demonstrated that none of the known indices can solely determine mass erosion caused by the current interruption. Therefore, the equations including two of defined parameters are proposed to evaluate mass erosion. The method using arc energy and transferred electrical charge owns the highest accuracy in evaluating mass loss. However, considering the complexity of arc voltage measurements, a second method using current and arcing time can be also utilized. In addition, the development of erosion during the lifetime of arc contacts is studied. It is shown that arc roots tend to form on new uneroded areas of the contacts during current interruption, resulting in different erosion rates between the first few and subsequent interruptions due to change of morphology of the contacts after the first few switching operations.

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Section: A Introductionmentioning

confidence: 99%

Online Assessment of Contact Erosion in High Voltage Gas Circuit Breakers Based on Different Physical Quantities

Mohammadhosein

Niayesh

Akmal

et al. 2019

IEEE Trans. Power Delivery

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“…The dynamic resistance measurement (DRM) was developed to assess the condition of the arcing contacts without dismantling the breaker. And the contact resistance between the moving and static contact can be measured [1,2] by a high injection current [3], it gets the dynamic resistance-time curve and travel-time curve, with the measurement on the breaker contact speed [4,5], and it can calculate the arc contact resistance as well as the travel from the arc contact to the main contact, which is used to diagnostic the ablation condition [6,7].…”

Section: Introductionmentioning

confidence: 99%

Application of Dynamic Resistance Measurement in the Contact Ablation Assessment of High Voltage SF6 Circuit Breaker

Yang¹,

Liu²,

Gao³

et al. 2017

Proceedings of the 2nd Annual International Conference on Electronics, Electrical Engineering and Information Science (EEEIS 20

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High voltage circuit breakers are most important protective device in power system. The contact ablation may cause the failure of circuit breaker and endangers the safety of the power system. Dynamic resistance measurement (DRM) is considered to be an effective assessment technique for contact ablation when the circuit breaker has a lower breaking speed. However, the resistance curve at higher rated speed during opening operation of high voltage circuit breaker is hardly to identify the main contact part as well as the arcing contact part. In this paper, a DRM characteristic analyzer has been used to collect the curves of resistance vs. time from an experimental prototype of high voltage SF6 circuit breaker during opening and closing operations. Based on the analysis of the experimental results, both the travel extracted from the curve during closing operation and the average resistance extracted from the curve during opening operation can be used to implement the condition assessment of the contact ablation, and the combined data show more details about the main contacts and arcing contacts of high voltage circuit breaker.

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“…Thus, they do not degrade by the effects of the arcing. The arcing contacts are responsible for the conduction of the arcing current, and therefore are submitted to the arcing discharge and all of its effects during the faulty opening operation [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…The state of the internal components of the arcing extinguishing chambers in high voltage circuit breakers reflects directly on the working condition of the equipment [2].…”

Section: Introductionmentioning

confidence: 99%

“…The high level of wear of the arcing contacts in circuit breakers directly reflects on a significant decrease in the extinction capability of high voltage during a fault condition in the associated electrical circuit [2]. Thus, there is an increased risk for excess heat within the circuit breaker, with the possibility of reaching higher temperatures than the circuit breaker is…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the Correlation between the Level of Contact Degradation and the Dynamic Resistance Curve in Circuit Breakers

Souza¹,

Costa²

2014

JEPE

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The DRM (dynamic contact resistance measurement) in high voltage circuit breakers is a manner of evaluating the internal ageing condition of the chamber. DRM is similar to static contact resistance measurement testing, but instead of measuring a single value when the breaker contacts are closed (static value), the ohmic resistance is measured at various contact positions, from the beginning of the contact opening until a complete separation of the contacts. The relationship between the contact resistances of the new circuit breaker and the ageing circuit breaker in operation provides subsidy for the evaluation of both the main and arcing contact conditions. This research aims to analyze the correlation between the various levels of degradation of the contacts and the configuration of the DRM curve. This work considers curve samples from new breaker chamber contacts and different levels of degradation by acceleration tests.

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A Complete Strategy for Conducting Dynamic Contact Resistance Measurements on HV Circuit Breakers

Cited by 73 publications

References 2 publications

Online Assessment of Contact Erosion in High Voltage Gas Circuit Breakers Based on Different Physical Quantities

Online Assessment of Contact Erosion in High Voltage Gas Circuit Breakers Based on Different Physical Quantities

Application of Dynamic Resistance Measurement in the Contact Ablation Assessment of High Voltage SF6 Circuit Breaker

Analysis of the Correlation between the Level of Contact Degradation and the Dynamic Resistance Curve in Circuit Breakers

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