Discrimination method and system of status of primary equipment
A technology of primary equipment and identification method, applied in circuit breaker testing and other directions, can solve the problems of inaccurate judgment and high equipment cost, and achieve the effect of avoiding position misjudgment, accurate judgment and cost reduction
Active Publication Date: 2020-01-14
XUJI GRP +5
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[0005] The purpose of the present invention is to provide a method and system for judging the state of primary equipment, so as to solve the problem of high equipment cost and inaccurate judgment when judging by the existing double confirmation mechanism
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[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and examples, but the embodiments of the present invention are not limited thereto.
[0036] The main technical idea of the present invention: collect the opening / closing position of the primary equipment as the first criterion, establish a corresponding relationship by separating some electrical signals on the current side and the opposite side as the second criterion, and make a comprehensive judgment through the two criteria Confirm and check each other to realize the status awareness and online early warning of primary equipment.
[0037] The identification method of the primary equipment state in this application is mainly applied in the automation system of the intelligent substation. The main wiring diagram of the substation is as follows figure 1 As shown, ...
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The invention relates to a discrimination method and system of status of primary equipment. The method includes the following steps: 1) collecting opening and closing position status information of the primary equipment during starting; 2) confirming closing position status when the equipment is in a closing position, wherein closing position confirming conditions include a first closing positionconfirming condition, a second closing position confirming condition and a third closing position confirming condition, when any closing position confirming condition is met, it is confirmed that theequipment is in the closing position, and when all the three closing position confirming conditions are not met, it is confirmed that closing position status is abnormal; and 3) confirming opening position status when the equipment is in an opening position, wherein opening position confirming conditions include a first opening position confirming condition and a second opening position confirmingcondition, when any opening position confirming condition is met, it is confirmed that the equipment is in the opening position, and when both the opening position confirming conditions are not met,it is confirmed that the opening position status is abnormal. According to the method, only voltage and a current of corresponding positions of two sides of spacing are collected through voltage sensors and current sensors, cost of collection equipment is caused to be reduced, a processing process is simple, and a judgment result is more accurate.
Description
technical field [0001] The invention relates to a method and a system for judging the state of primary equipment. Background technique [0002] As important primary equipment in substations, circuit breakers and disconnectors may fail to close due to loosening or aging of some mechanical components. At present, the position of the primary equipment is usually judged by the collected secondary auxiliary contact state. This indication method cannot be used as a reliable criterion for the position of the primary equipment when the main contact is not fully opened. [0003] The current safety regulations require that when determining the position of electrical equipment after operation, there should be at least two indications that are not based on the same principle or from the same source. This requires the technical criterion of the "double confirmation" mechanism. The current invention patent application document with the publication number CN110018415A discloses a double c...
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IPC IPC(8): G01R31/327
CPCG01R31/327
Inventor 邓茂军蔡敏倪传坤夏勇军陈海龙王成智李江林王作维余高旺鄂士平李文正黎恒烜王晓锋张侃君张艳超
Owner XUJI GRP