Method for quickly discriminating abnormal operating condition of electrical equipment

A technology for abnormal operation and electrical equipment, applied in the direction of electrical testing/monitoring, instruments, control/regulation systems, etc., can solve problems such as difficult state maintenance, failure to extract key information, errors, etc., to achieve good maintenance and realize the effect of intuitive display
CN105045253AActive Publication Date: 2015-11-11广东蓄能发电有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
广东蓄能发电有限公司
Publication Date
2015-11-11

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Abstract

The invention provides a method for quickly discriminating an abnormal operating condition of electrical equipment. The method specifically comprises the steps of firstly removing a switching quantity record during an equipment maintenance period from a switching quantity record of the operating equipment; calculating the operating time and probability distribution of the equipment; then regarding the switching quantity record beyond 1.96 times of a mean square error to be a switching quantity record of the abnormal operating condition by taking an average value or the maximum frequency value as a center according to whether the probability density distribution is bilaterally symmetrical or not; and finally calculating a mean square error of the probability distribution after the abnormal operating condition record is removed, wherein if the mean square error is less than a threshold delta0, the equipment is unstable in operation, and maintenance needs to be carried out on the equipment timely, and if the mean square error is greater than the threshold delta0, the equipment is stable in operation, and no inspection and maintenance needs to be carried out on the equipment. The method provided by the invention can separate the switching quantity record at an abnormal operating state from the switching quantity record, and provides a reliable scheme for state evaluation and state maintenance of the operating equipment.
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Description

technical field

[0001] The invention relates to the technical field of electrical equipment, in particular to a method for quickly identifying abnormal operating conditions of electrical equipment. Background technique

[0002] The running equipment is normally in the standby state, usually can be started at any time and can record the time and the "on" state at this time by sending out the switch value, or stop at any time and record the time and this time by sending out the switch value when the device is in the "off" state.

[0003] These records containing the "on" or "off" state of the device, the corresponding time, and the description of the corresponding device are the switch value records described in the present invention. In the project, the duration of equipment operation can be obtained by calculating the interval time difference between the two state records in the switch volume record, and the startup frequency of the equipment can be known through the number...

Claims

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