Inversion method and device for current-through fault of high-voltage switch

A high-voltage switch and inversion technology, which is applied to measuring devices, circuit breaker testing, instruments, etc., can solve problems such as unpredictable and evaluation of high-voltage switch flow performance, and achieve the effect of improving maintenance efficiency

Active Publication Date: 2020-02-25
PINGGAO GRP +1
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Problems solved by technology

[0004] The purpose of the present invention is to provide an inversion method and device for a high-voltage switch curren...

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  • Inversion method and device for current-through fault of high-voltage switch
  • Inversion method and device for current-through fault of high-voltage switch
  • Inversion method and device for current-through fault of high-voltage switch

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Embodiment Construction

[0027] The current fault of the circuit breaker will cause the characteristic parameters of the circuit breaker operating mechanism to change. Therefore, it is of great significance to understand and study the state change of the circuit breaker mechanism in-depth for the monitoring of the current state of the circuit breaker and its accessories.

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] At present, the state detection research on the current flow characteristics of high-voltage switches has been reported in relevant literature at home and abroad, but there is no effective means for processing the collected current flow state parameters of high-voltage switches in the prior art. The establishment of the processing model is too simple, only a part of the state parameters is considered, and it cannot accurately reflect the flow state of the high-voltage switchgear and predict the flow capacity,...

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Abstract

The invention relates to the field of high-voltage equipment monitoring, in particular to an inversion method and device for a current-through fault of a high-voltage switch. The inversion method comprises the steps of firstly, taking monitoring data as an input condition of a simulation model by building a finite element technology- and CFD technology-based high-voltage switch current-through fault inversion model, and obtaining an inversion temperature by running the inversion model; secondly, adjusting a parameter in the inversion model according to a comparison result of a monitoring temperature; and finally, judging whether the high-voltage switch has current-through capability or not at maximum load according to the inversion model after parameter adjustment. Model inversion simulation can be performed according to monitoring data, so that whether a fault occurs in the high-voltage switch or not is effectively judged, an improved scheme is proposed, real-time early warning of thefault can be achieved, and the operation and maintenance efficiency of the high-voltage switch is improved.

Description

technical field [0001] The invention relates to the field of high-voltage equipment monitoring, in particular to an inversion method and device for a high-voltage switch current failure. Background technique [0002] The field operation experience of high-voltage switches shows that flow-through faults are one of its common frequent faults. Taking circuit breakers as an example, circuit breakers, as important high-voltage and high-current switching electrical equipment in power systems, play an important role in the system. Because of its important role in the system, the circuit breaker is the key maintenance object. Electric power technology workers have been working on the monitoring of the flow status of the circuit breaker, and even early warning, reducing or cutting off various power outages caused by the unplanned outage of the circuit breaker. , to avoid or reduce the impact on the overall system as much as possible. [0003] The external conditions of the flow faul...

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Application Information

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IPC IPC(8): G01R31/327
CPCG01R31/3275Y02E60/00
Inventor 王之军姚永其郭煜敬刘亚培王刚张博张豪郝相羽王冠
Owner PINGGAO GRP
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