Mechanical interlocking device for power supply of load switch cabinet with dual power supply for ring network cabinet

Abstract

The invention discloses a machinery interlocking device used for a ring network cabinet dual-power-supply load cabinet power supply, comprising two sliding plates which can slide horizontally, and two pull rod mechanisms; one end of each pull rod mechanism is connected to one end of the sliding plate; the other end of the pull rod mechanism is in rotation connection with the power supply indication board of a corresponding switch cabinet; the other end of the sliding plate is provided with a baffle corresponding to the operation position of the switch of the switch cabinet ; and the baffle can block the operation of the switch of the switch cabinet. The machinery interlocking device used for the power supply of the ring network cabinet dual-power-supply load cabinet comprises two sliding plates which can slide horizontally and two pull rod mechanisms, the one end of each pull rod mechanism is in rotation connection with one end of the sliding plate, and the other end is in rotation connection with the indication board of the power supply. As a result, the operation hole of the load switch cabinet is plugged while the other load switch cabinet is switched off, so that the load switch cabinet is not mistakenly closed, which acts as an interlocking function and enables the power supply of the dual power supply switch cabinet to be guaranteed.

Description

technical field [0001] The invention relates to the technical field of a medium-voltage ring network cabinet, in particular to a mechanical interlock device for power supply of a dual-power load switch cabinet. Background technique [0002] With the wide application of the ring network cabinet in the power system, people have put forward new technical requirements for the technology of the ring network cabinet industry, mainly for the higher and higher power supply requirements in the power supply system, and the dual power supply is especially important. [0003] The interlocking function of the original dual power supply load switch cabinet of the ring network cabinet is not perfect: 1. When one load switch cabinet is powered, it is easy to cause the other load switch cabinet to be closed or opened by mistake due to no interlocking 2. When a load switch cabinet power supply runs into a fault, it is necessary to manually open the switch cabinet before another load switch ca...

AI Technical Summary

Problems solved by technology

[0003] The interlocking function of the original dual power supply load switch cabinet of the ring network cabinet is not perfect: 1. When one load switch cabinet is powered, it is easy to cause the other load switch cabinet to be closed or opened by mistake due to no interlocking ; 2. When the power supply of a load switch cabinet encounters a failure, it is necessary to manually open the switch cabinet before closing the other load switch cabinet for power supply.

Since there is no interlock function between the two load switch cabinets, the power supply cannot be reliably guaranteed, and there are hidden dangers to the safety of operators and maintenance personnel.

According to the current national strategic goal of building a strong smart grid and the requirements for the construction of smart high-voltage switchgear, the original mechanism cannot play a role in mechanical interlocking, and cannot provide a reliable guarantee for the realization of smart switchgear.

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