Method for detecting mechanical characteristics of circuit breaker online by utilizing switch radiation field
A technology of mechanical characteristics and circuit breakers, applied in the field of electrical equipment testing, can solve problems such as failure to eliminate hidden dangers in time, blind maintenance and other problems, and achieve the effect of low cost, less monitoring equipment, and simple operation
Active Publication Date: 2020-02-28
STATE GRID SHANDONG ELECTRIC POWER +1
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Problems solved by technology
There are two deficiencies in regular maintenance: one is that when there are potential unsafe factors in the equipment, the hidden dangers cannot be eliminated in time because the maintenance time has not arrived; big blindness
In the past, the switch radiation field was mostly studied as the electromagnetic interference in the substation, and there were few reports on the use of the switch radiation field to test the mechanical characteristics of the circuit breaker.
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[0017] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0018] In this embodiment, the method for using the switch radiation field to detect the mechanical characteristics of the circuit breaker online, the process is as follows figure 1 As shown, it specifically includes the following steps:
[0019] 1. Install an electromagnetic field sensor in the GIS equipment, and monitor the magnetic field fluctuation signal at the beginning of arc extinction and the m...
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The invention belongs to the technical field of electrical equipment detection, and relates to a method for detecting mechanical characteristics of a circuit breaker online by utilizing a switch radiation field. The method comprises the steps of: detecting magnetic field sudden change pulses when arc extinguishing starts and ends, and acquiring arc extinguishing start time and arc extinguishing end time of the circuit breaker respectively; calculating arc extinguishing time t of each phase according to the arc extinguishing start time and the arc extinguishing end time of the circuit breaker;calculating a difference value delta t between the arc extinguishing time t and initial arc extinguishing time t0, wherein delta t=t-t0, and t0 is a delivery value or arc extinguishing time measured during initial commissioning; and evaluating a state of health of the circuit breaker according to the delta t. The method provided by the invention is simple in operation, can realize real-time onlinemonitoring of the circuit breaker, requires few monitoring equipment, is low in cost, and provides a new idea for online monitoring of the circuit breaker.
Description
technical field [0001] The invention belongs to the technical field of electrical equipment detection, and relates to a method for on-line detection of mechanical characteristics of a circuit breaker. Background technique [0002] The circuit breaker is the most important high-voltage electrical equipment in the power system, and its importance is self-evident. In order to improve the reliability of circuit breaker operation, it is necessary to carry out necessary inspection and maintenance on the circuit breaker. At present, the maintenance measures adopted are mainly "regular maintenance", that is, the circuit breaker is powered off for maintenance according to a fixed time period. There are two deficiencies in regular maintenance: one is that when there are potential unsafe factors in the equipment, the hidden dangers cannot be eliminated in time because the time for maintenance has not arrived; Great blindness. Regular maintenance of circuit breakers is heavy and lack...
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IPC IPC(8): G01M13/00G01R29/08G01R31/327
CPCG01M13/00G01R29/0878G01R29/0892G01R31/3275
Inventor 雷敏刘鹏陈伟坤白志轩吴寿山魏振葛惠阳
Owner STATE GRID SHANDONG ELECTRIC POWER