Circuit breaker three-phase arc extinguishing performance detection method based on separation algorithm

A detection method and circuit breaker technology, which is applied in circuit breaker testing and other directions, can solve problems that cannot meet the requirements of power system safety, stability, and economic development, etc.

Active Publication Date: 2021-08-27
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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Problems solved by technology

Existing detection and diagnosis methods are unable to meet the requirements of sa...

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  • Circuit breaker three-phase arc extinguishing performance detection method based on separation algorithm
  • Circuit breaker three-phase arc extinguishing performance detection method based on separation algorithm
  • Circuit breaker three-phase arc extinguishing performance detection method based on separation algorithm

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Embodiment Construction

[0063] The embodiments will be described in detail hereinafter, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following examples do not represent all implementations consistent with this application. These are merely examples of systems and methods consistent with aspects of the present application as recited in the claims.

[0064] see figure 1 , figure 1 Layout schematic for the antenna array; see figure 2 is a schematic diagram of the connection between the antenna array and the multi-channel oscilloscope; see image 3 is the radiated electromagnetic wave signal diagram collected by each antenna in the antenna array; image 3 The picture in (a) is the signal collected by antenna 1, image 3 The picture in (b) shows the signal collected by ant...

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Abstract

The invention provides a circuit breaker three-phase arc extinguishing performance detection method based on a separation algorithm. The circuit breaker three-phase arc extinguishing performance detection method comprises the following steps of: collecting radiation electromagnetic waves generated in the circuit breaker contact opening process; transmitting the radiation electromagnetic wave data to a multi-channel oscilloscope for storage; calculating the radiation electromagnetic waves stored in the oscilloscope by using a separation algorithm so as to respectively extract electromagnetic wave signals of each phase of the circuit breaker; and comparing the number of the electromagnetic wave signals of each phase with a preset number, and judging the ablation degree of the circuit breaker contact. By means of electrical measurement, algorithm separation and waveform observation, the electromagnetic wave signals of the A phase, the B phase and the C phase of the circuit breaker are extracted respectively, the number of the electromagnetic wave signals is analyzed, the contact ablation degrees of the three phases of the circuit breaker are diagnosed rapidly, and the method has the remarkable advantages of being visual, simple, rapid, efficient and the like.

Description

technical field [0001] The present application relates to the technical field of circuit breaker fault diagnosis, in particular to a method for detecting the three-phase arc extinguishing performance of a circuit breaker based on a separation algorithm. Background technique [0002] The circuit breaker is used in the power system, mainly to automatically cut off the circuit in the event of serious overload, short circuit and undervoltage, etc., to control the stability of the power system voltage. Under long-term working conditions, the contacts of the circuit breaker will be ablated due to the high temperature and high pressure environment during the opening process, and the ablated contacts will affect the opening performance of the circuit breaker, resulting in inflexible operation, Faults such as failure to open the gate seriously threaten the safety and stable operation of the power grid. Therefore, the judgment feature quantity that can reflect the ablation degree of ...

Claims

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Application Information

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IPC IPC(8): G01R31/327
CPCG01R31/327Y04S10/52
Inventor 马宏明苏雁飞王伟钱国超程志万赵现平何顺彭兆裕杨明昆邱鹏锋
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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