An access control system for preventing mistaken entry into electrified partitions

Abstract

The invention discloses an access control system for preventing mistaken entry into a charged compartment, which includes an access door and a door lock, the door lock includes a mechanical door lock and an electromagnetic door lock, and a control system; the control system includes a DC control power supply, an access control Power supply and a plurality of control loops, the control loops include anti-short-circuit locking and state release loops, five-proof unlocking and electrical lock circuits, and access control release circuits; the anti-short-circuit locking and state release circuits are connected in series by electric coded locks An anti-short circuit locking relay is formed and connected to a DC control power supply; the access control release circuit includes an electromagnetic door lock and connected to an access control power supply. The invention can effectively prevent substation operators or construction personnel from forcibly entering live equipment to work in intervals, thoroughly solve the shortcomings of the "five prevention" system, effectively prevent personal casualties, and ensure personal and equipment safety.

Description

technical field [0001] The invention relates to the field of power grids, in particular to an access control system for preventing mistaken entry into charged compartments. Background technique [0002] In the prior art, personal casualties, equipment damage and system power outage accidents caused by vicious misoperation accidents in the power system, strayed into the interval of live equipment, etc. accounted for a huge proportion. The main factors causing these accidents are human factors and equipment factors: first, the human factors that cause accidents due to the weak safety awareness of people and the lack of strong sense of responsibility, and the failure to strictly implement the operation process according to the regulations; Equipment factors that cause accidents due to no reliable logic lock and no safety warning. At present, the "five prevention" systems of substation manufacturers have been widely used. According to the long-term operation situation, there ar...

AI Technical Summary

Problems solved by technology

[0002] In the existing technology, personal casualties, equipment damage, and system power outage accidents caused by vicious misoperation accidents in the power system, strayed into the interval of live equipment, etc. accounted for a huge proportion.

The main factors causing these accidents are human factors and equipment factors: first, the human factors that cause accidents due to the weak safety awareness of people and the lack of strong sense of responsibility, and the failure to strictly implement the operation process according to the regulations; Equipment factors that cause accidents due to no reliable logic lock and no safety warning

At present, the "five prevention" systems of substation manufacturers have been widely used. According to the long-term operation situation, there are loopholes in the measures to prevent accidental entry into the live equipment interval. The on-site staff can easily unlock the equipment interval to enter and exit at will work, the probability of personal electric shock is very high

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