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Simulation method and system for electric arc of double-fracture circuit breaker

A technology of double-break circuit breaker and simulation method, which is applied in the fields of instruments, electrical digital data processing, special data processing applications, etc., can solve the problems that the simulation results are difficult to match the actual situation, achieve effective use, and make up for the low simulation accuracy. , easy to use effect

Active Publication Date: 2020-03-31
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID NINGXIA ELECTRIC POWER COMPANY +2
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Problems solved by technology

[0005] The embodiment of the present invention provides a method and system for simulating the arc of a double-break circuit breaker, so as to solve the problem in the prior art that the simulation results of the arc model of a double-break circuit breaker are difficult to match the actual situation

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  • Simulation method and system for electric arc of double-fracture circuit breaker
  • Simulation method and system for electric arc of double-fracture circuit breaker
  • Simulation method and system for electric arc of double-fracture circuit breaker

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Embodiment Construction

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0037] The embodiment of the invention discloses an arc simulation method of a double-break circuit breaker. Specific, such as figure 1 As shown, the method includes the following steps:

[0038] Step S101: Obtain the equivalent resistances of the two fractures of the double fracture circuit breaker.

[0039] In a preferred embodiment of the present invention, a substation is used to switch the double-break SF of the AC filter 6 Circuit breaker is an example, its...

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Abstract

The embodiment of the invention discloses a simulation method and a system for an electric arc of a double-fracture circuit breaker. The simulation method comprises the following steps: acquiring equivalent resistances of two fractures of the double-fracture circuit breaker; establishing an arc simulation model; and simulating by adopting the arc simulation model according to the equivalent resistance. According to the method of the invention, autonomous control on arcing and arc extinguishing of the double-fracture circuit breaker and high-precision quantitative analysis on arc parameters canbe realized, the defects of low control logic adaptability and low simulation precision of an existing model are overcome, and the simulation method and the system are convenient to use and effective.

Description

Technical field [0001] The invention relates to the technical field of circuit breakers, and in particular to a simulation method and system for arcs of a double-break circuit breaker. Background technique [0002] In high-voltage switchgear, double-break SF 6 Because the arc gap recovery voltage of a single fracture is relatively low, the medium recovery speed is fast, and the breaking capacity is strong, the circuit breaker is widely used in occasions that require high breaking current. When the double-break circuit breaker cuts off the capacitive power equipment, since the current is ahead of the voltage, a large DC voltage will appear on the load side of the circuit breaker at the moment the current is broken. This DC voltage is initially distributed on the two fractures according to the value of the voltage equalization capacitance connected in parallel on the fracture, and then gradually distributed according to the equivalent resistance of the two fractures. [0003] Affect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/367
CPCY02E60/00
Inventor 马飞越倪辉邓军波朱洪波丁培叶逢春宋仕军何春应田禄张庆平牛勃魏莹陈磊
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID NINGXIA ELECTRIC POWER COMPANY
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