Relay life prediction test system based on degradation sensitive parameter change trend analysis

A technology of life prediction and change trend, applied in circuit breaker testing, instruments, measuring electricity and other directions, it can solve the problems of ignoring the time parameter life characteristics of the product wear degree and the inability to accurately evaluate the reliable life of the product, and achieve strong application value. Effect

Pending Publication Date: 2020-08-28
ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO +2
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Problems solved by technology

[0003] However, most of the current domestic relay-related test standards only stipulate the process and conditions of the life test. The time parameters of the degree of product wear and the life characteristics of the change over time make it impossible to accurately evaluate the reliable life of the product

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  • Relay life prediction test system based on degradation sensitive parameter change trend analysis
  • Relay life prediction test system based on degradation sensitive parameter change trend analysis

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Embodiment Construction

[0032] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

[0033] From the relay failure mode and mechanism, the characteristic quantity that may be used to reflect the change of relay failure rate with time is identified. On the one hand, according to the analysis, the relay contact resistance, pull-in current, pull-in time, release current, and pull-in time may all be used as characteristic quantities to predict the life of the relay. On the other hand, the life characteristics of relays are inseparable from the effects of parameters such as environmental stress and load current. Therefore, the test system must also collect environmental stress parameters in real time, and establish a corresponding life evaluation or life verification method based on the relay contact resistance degradation model....

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Abstract

The invention relates to a relay life prediction test system based on degradation sensitive parameter change trend analysis. The relay life prediction test system is characterized by comprising a relay action control unit, an environmental stress control unit, a relay load electric stress unit, a measuring unit and a main control unit, wherein an input end of the relay action control unit is respectively connected with an output end of the environmental stress control unit, an output end of the relay load electric stress unit, an output end of the measuring unit and an output end of the maincontrol unit; and the output end of the relay load electric stress unit is further connected with an input end of the main control unit, and the main control unit is in two-way connection with the environmental stress control unit and the measuring unit. The relay life prediction test system realizes functions such as automatic control over relay key characteristic parameter test process, real-time test data acquisition and intelligent analysis, so that relay degradation trend analysis and life prediction can be performed, and a test platform has high application value.

Description

technical field [0001] The invention belongs to the technical field of relays, and relates to a relay service life prediction and testing system based on the trend analysis of degradation sensitive parameters. Background technique [0002] Electromagnetic relay is a commonly used electromechanical component, which is widely used in control, isolation and protection circuits of electronic products. For applications that require high reliability and long life, the service life of the relay is an element that must be considered in the product design process, and the common method is to evaluate it through reliability life tests. [0003] However, most of the current domestic relay-related test standards only stipulate the process and conditions of the life test. The time parameters of the degree of product wear and the life characteristics of the change over time make it impossible to accurately evaluate the reliable life of the product. [0004] Therefore, how to obtain the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327
CPCG01R31/3278
Inventor 李桢祥李蓓赵茜茹刘紫熠吉杨张卫欣王季孟王崇王玥张永强
Owner ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO
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