Transformer substation temporary wiring anti-misoperation locking system, detection method and computer key

Abstract

The embodiment of the invention discloses a transformer substation temporary wiring anti-misoperation locking system. The system comprises an industrial control host, a communication adapter in communication with a microcomputer, a computer key and various locks, and further comprises a newly-added electric encoding lock matched with a test pen, a first newly-added mechanical encoding lock and a second newly-added mechanical encoding lock, wherein the first newly-added mechanical encoding lock and the second newly-added mechanical encoding lock are matched with a ground wire and a ground rod respectively. The industrial control host comprises a locking logical program of the test pen, the ground wire and the ground rod. The newly-added electric encoding lock comprises a first five-prevention electronic encoding piece generating a first code, the first newly-added mechanical encoding lock comprises a second five-prevention electronic encoding piece generating a second code, and the second newly-added mechanical encoding lock comprises a third five-prevention electronic encoding piece generating a third code; according to the locking logical program, codes displayed by the computer key are matched with the first code, the second code and the third code respectively, and therefore locks which are matched with and correspond to the codes are controlled to be opened and closed. According to the transformer substation temporary wiring anti-misoperation locking system, the ground wire, the ground rod and the test pen can be managed, and therefore the purposes of comprehensive monitoring and temporary ground wire management are achieved.

Description

technical field [0001] The invention relates to the technical field of power system substation overhaul and maintenance, in particular to a substation temporary wiring anti-misoperation locking system, a detection method, and a computer key. Background technique [0002] Electrical misoperation in substations may cause large-scale power outages, equipment damage, personal casualties, and even cause serious consequences such as grid shock or collapse. In 1980, the Ministry of Water Resources and Electric Power listed the prevention of electrical misuse accidents as a major technical problem that urgently needs to be solved in power production. Document No.) stipulates the management, operation, design and use principles of electrical error prevention. Among them, the "five defenses" specifically include: ① prevent accidental pulling or closing of the isolating switch with load; ② prevent accidental pulling or closing of the circuit breaker; Close the grounding knife; ⑤ prev...

AI Technical Summary

Problems solved by technology

[0004] At present, the measures generally adopted in the whole country are: set the grounding fixed terminal near or on the primary equipment of the substation, and install the microcomputer five-proof padlock on the grounding fixed terminal or set the electrical coding lock on the primary equipment. The main wiring diagram of the five-proof device of the system (such as figure 1 As shown), the grounding pile logo is added, and the locking logic is written for the position information of the grounding pile and related switches, switches, and ground knives, so as to prevent the grounding wire from closing and transmitting power or prevent the live wire from being connected to the grounding wire, but the grounding is used above. The pile method cannot comprehensively incorporate the grounding wire into the substation comprehensive operating system for the following reasons:

[0005] 1. The grounding terminal is a grounding pile with a microcomputer five-proof device. During the primary equipment maintenance of the substation, the grounding pile is used to restrict the location of the grounding wire. However, due to the temporary and on-demand fixed installation of the grounding wire Two characteristics make it impossible to determine the installation location of the grounding wire, resulting in two ways of managing the grounding wire in the substation

Among them, the first management method can be included in the substation integrated operating system, and the ground wire must be installed on the ground pile; the second management method cannot be included in the substation integrated operating system, and it does not need to install the ground wire on the ground pile. The disadvantages are: the hidden danger of misoperation is buried, and the lack of monitoring means is easy to lead to the phenomenon of missing installation and disassembly of the grounding wire

[0006] 2. Substation staff usually install grounding piles based on work experience. Even if the grounding piles are referred to in the main wiring diagram, there may be missing or wrong installation of grounding piles. error, and the length of the grounding wire is fixed, so the staff often neglect to adopt the correct installation posture and maintain a safe enough installation distance in order to accommodate the grounding pile when installing the grounding wire

[0007] 3. Since ground wires, ground rods and electroscope pens are not included in the substation integrated operating system, only the ground piles that limit the installation location are included in the substation integrated operating system, so it does not really play a role in locking and restricting live hanging ground wires phenomenon occurs

When the grounding wire is temporarily connected and not connected to the grounding pile, the integrated operating system of the substation cannot manage it, so that the microcomputer controlling the integrated operating system of the substation may simulate closing and power transmission when the grounding wire is removed, resulting in the closing of the grounding wire. Accidents such as brakes or personal injury occur

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