Secondary automatic nuclear phase device of ring main unit

Abstract

The invention discloses a secondary automatic nuclear phase device of a ring main unit. The secondary automatic nuclear phase device comprises a multi-channel distributor, an AD collecting unit, a processing operation unit, an input/output interface circuit and a power supply system, wherein the multi-channel distributor, the AD collecting unit and the input/output interface circuit are all connected with the processing operation unit; the power supply system is connected with the multi-channel distributor and the AD collecting unit; the input/output interface circuit is connected with the AD collecting unit; the multi-channel distributor is connected with a voltage transformer loop on an inlet wire busbar of a tested ring main unit; the multi-channel distributor and the inlet wire busbar of the tested ring main unit are connected with a fuse F and a voltmeter V in series; one end of the voltmeter V is connected with the fuse F, and the other end of the voltmeter V is connected with the multi-channel distributor. The secondary automatic nuclear phase device of the ring main unit has the advantages of being capable of achieving the automatic nuclear phase operation of the double-power-supply inlet wire busbar, improving the efficiency, accuracy and reliability of nuclear phase operation, shortening the power failure time, improving the power supply quality and the like.

Description

technical field [0001] The invention relates to a secondary automatic phase verification device of a ring network cabinet. Background technique [0002] Phase nuclear instruments generally have the two main functions of phase verification and phase sequence verification, or also have functions such as phase verification, phase sequence measurement, and electrical inspection. In the current nuclear phase application occasions, it can be divided into primary nuclear phase and secondary nuclear phase. The primary nuclear phase refers to the nuclear phase on the high-voltage side (primary side), and the high-voltage bus is checked through the high-voltage phase nuclear instrument. The secondary nuclear phase (secondary side nuclear phase) refers to the low-voltage side of the high-voltage bus that is isolated and stepped down by the voltage transformer PT for nuclear phase. [0003] In engineering, both high-pressure nuclear phase and low-pressure nuclear phase are essential w...

AI Technical Summary

Problems solved by technology

The traditional nuclear phase method uses multi-person division and cooperation (operators, safety monitoring personnel), and it is a live operation, which must be completed in strict accordance with the operation steps, which has a certain degree of danger.

At the same time, due to the on-site operation, due to the subjective influence of the weather and the on-site operators, there may be recording errors, operational errors, etc., which will bring certain dangers and unforeseen errors to the nuclear phase work.

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