Detachable combined anti-misoperation locking box suitable for power transformation protection screen

Abstract

The invention relates to a detachable combined anti-misoperation locking box suitable for a power transformation protection screen. The detachable combined anti-misoperation locking box comprises a box body and warning plates. The two sides of the box body are provided with positioning plates which are inwardly and vertically recessed in a mirror symmetry way. Positioning magnets are embedded in the positioning plates via embedding holes. Height-limiting square frames are manufactured in the box body between the positioning plates in a uniform distribution and spacing way. Multiple secondary element locking sleeves are manufactured on the box body in each height-limiting square frame. One warning plate is installed at the external surface of each corresponding height-limiting square frame in a magnetic absorption way. A connected buckling box type structure is adopted by the locking box, and secondary elements in each segment of protection screen can be positioned in the insulating box. Meanwhile, the locking sleeve locking the secondary element is manufactured in the insulating box corresponding to each secondary element, and all the secondary elements can be synchronously positioned so that change of the secondary elements caused by any misoperation of operators can be effectively avoided, and calibration safety of a transformer substation can be greatly guaranteed.

Description

technical field [0001] The invention belongs to the field of substation protection, and relates to an anti-misoperation device for a substation protection screen, in particular to a detachable combined anti-misoperation locking box suitable for the substation protection screen. Background technique [0002] At present, the annual calibration of substations is basically carried out by means of "half-plane" power outages at transformer intervals. Considering space and construction costs, etc., the bus differential protection of each section of the bus with the same voltage level is usually arranged in the bus differential protection screen during design and construction, and the backup automatic switching protection of each section circuit breaker is uniformly arranged in the section backup automatic switching protection. Cast into the protection screen. When carrying out the "half-face" annual calibration of the substation relay protection secondary equipment, the protection...

AI Technical Summary

Problems solved by technology

When carrying out the "half-face" annual calibration of the substation relay protection secondary equipment, the protection operation and maintenance personnel must work under the condition that there are both operating equipment and maintenance equipment in the same protection screen. Touching the pressure plate of the operating equipment and many other potential safety hazards may easily cause personal injury and large-scale power outage accidents

[0003] In the actual work process, to protect the operation and maintenance personnel, only manual prompts or paper slogans are used to prevent the above problems. First, it affects the accuracy. Second, the paper slogans are easy to fall off, posing a greater safety hazard.

[0004] Through retrieval, there is currently no accurate and convenient method to reduce and avoid accidental touch operations in the work process

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