Nuclear power station relay detection method

A detection method and relay technology, applied in the direction of circuit breaker testing, optical testing flaws/defects, etc., can solve problems such as low reliability, deviation of the overall quality level of electromagnetic relays, lack of diagnostic equipment and methods for online relay aging, and improve Safety and reliability, risk reduction effects

Active Publication Date: 2013-06-19
CHINA GENERAL NUCLEAR POWER CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Electromagnetic relay is an electromechanical control element. Its own structural characteristics and manufacturing process lead to the deviation of the overall quality level of electromagnetic relay, and its reliability is far lower than that of other electronic devices.
[0005] At present, there is a lack of effective detection methods for relays, and a lack of corresponding diagnostic equipment and methods for the aging of online relays. Therefore, it is difficult to accurately judge the performance of relays, which poses certain risks to the safe operation of nuclear power plants.

Method used

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  • Nuclear power station relay detection method
  • Nuclear power station relay detection method

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Experimental program
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Effect test

Embodiment 1

[0028] figure 1 A flow chart of a detection method for a nuclear power plant relay provided by the first embodiment of the present invention is shown, which is described in detail as follows.

[0029] Step S11 , detect according to the state of the nuclear power plant relay, wherein the state of the relay includes the state before being used as a spare part, the state before use, the state in operation, and the state of failure or aging.

[0030] Step S12, process the relay according to the detection result.

[0031] In a nuclear power plant, after purchasing a new batch of relays, a comprehensive inspection of the new relays is required to determine whether the new relays are suitable as new spare parts for nuclear power plants; Before the repaired relay replaces the running relay, it is necessary to test the new spare parts of the relay or the repaired relay again to ensure the reliability of the replaced relay; when the relay runs for a certain period in the nuclear power ...

Embodiment 2

[0034] figure 2 It shows the flow chart of the detection method for nuclear power plant relays provided by the second embodiment of the present invention for detecting relays in the pre-spare state, and is described in detail as follows.

[0035] Step S21, using a magnifying glass or a microscope to inspect the appearance of the relay in the pre-nuclear power plant spare parts state.

[0036] In this embodiment, the appearance inspection is first performed on the newly purchased relay. Specifically, the relay can be inspected visually or with a magnifying glass or a microscope. , indicating that the relay fails the appearance inspection, and no subsequent inspection is performed on relays that fail the appearance inspection, thereby improving the relay inspection efficiency.

[0037] Step S22: Perform non-destructive testing on the relay that has passed the appearance test to obtain the performance parameters of the relay, the performance parameters of the relay include wind...

Embodiment 3

[0057] Figure 4 It shows the flow chart of the nuclear power plant relay detection method provided by the third embodiment of the present invention to detect the relay in the pre-use state. In this embodiment, if the spare parts tested by the detection method of the second embodiment are used before the nuclear power plant , or before reusing the relay after fault repair in the nuclear power plant, the detection described in the third embodiment needs to be carried out, which is described in detail as follows.

[0058] Step S41, conduct the first non-destructive inspection on the relay in the state before use to obtain the performance parameters of the relay, the performance parameters of the relay include winding resistance, pull-in voltage, release voltage, contact resistance, contact action time, contact Point release time, contact synchronization time, contact bounce time, contact stabilization time, switching function, median screening, insulation resistance, dielectric ...

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Abstract

The invention is suitable for an online digital state detection and monitoring technology of electric equipment, meanwhile belongs to the technical field of a million kilowatt nuclear power station, and provides a nuclear power station relay detection method. The method includes the following steps: conducting detection according to state of the nuclear power station relay, wherein the states of the relay can be a state before preparing a part, a state before usage, a state during operation, a failure state and an aging state. According to detected result, the relay is processed. The nuclear power station relay detection method conducts detection of the relay of different states, estimates reliability of the relay, lowers risks of trip and outage of a unit, and improves safety and reliability of operation of the nuclear power station.

Description

technical field [0001] The invention belongs to the on-line digital state detection and monitoring technology of power equipment, and also belongs to the key technical field of a million-kilowatt nuclear power plant, in particular to a detection method for a nuclear power plant relay. Background technique [0002] Power equipment status detection and monitoring technology is the key technology of nuclear power plants. In nuclear power plants, a technical platform for nuclear power plant control equipment testing is established by developing aging test methods and maintenance test methods, including the establishment of aging and maintenance test platforms for nuclear power plant boards. The state detection and monitoring technology is applied to the field of aging test and maintenance test of circuit boards in the instrument and control system of nuclear power plants, so as to realize the aging diagnosis / test management of nuclear power plant control equipment / boards, and imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327G01N21/88
Inventor 丁俊超马蜀刘新东张志飞崔国华汪世清犹代伦孙志峰王国云
Owner CHINA GENERAL NUCLEAR POWER CORP
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