Three-phase live display and cable line phase sequence monitoring and checking device and method

Abstract

The embodiment of the invention discloses a three-phase live display and a cable line phase sequence monitoring and checking device and method. The three-phase live display comprises an induction power taking module, a phase sequence checking module, a phase sequence indication module and a result display module. The induction power taking module is used for sleeving a to-be-detected cable on two sides of a cable open loop point and acquiring an electric signal of the to-be-detected cable; the phase sequence checking module is used for determining the phase sequence of each to-be-detected cable according to the electric signal, and further checking the phase sequences of the to-be-detected cables on the two sides of the cable open loop point; the phase sequence indication module is used for indicating the phase sequence and the electrification condition of each to-be-detected cable according to the phase sequence determination result; and the result display module is used for displaying the phase sequence checking result. According to the embodiment of the invention, the phase sequence checking of the cable line can be realized, the phase sequence and electrification condition of the cable line can be accurately displayed, the phase checking difficulty of the cable line is reduced, the phase checking working time is shortened, and the line phase checking efficiency is improved.

Description

technical field [0001] The embodiment of the present invention relates to a power grid monitoring technology, in particular to a three-phase electrified display, a phase sequence monitoring and checking device and method for cable lines. Background technique [0002] With the increasing level of urbanization year by year, the cable rate of overhead lines continues to increase, and the ring distribution network has become the mainstream direction of distribution network construction. As important equipment and carriers for power transmission, ring network cabinets, cable distribution boxes and cables are more and more widely used in power supply systems. [0003] However, there are a large number of equipment such as ring network cabinets and cable distribution boxes, and the cable lines are generally long and there are intermediate joints. Due to the uneven quality of the construction personnel, during the construction process, the phase sequences of the two ends of the inte...

AI Technical Summary

Problems solved by technology

However, cable distribution boxes or ring network distribution stations are often located in underground spaces, and factors such as building structure and location will cause shielding of wireless signals, which will increase the difficulty of manual phase verification, long working hours, and low efficiency of phase verification. It is also easy to produce erroneous nuclear phase results when communication is difficult

In addition, the three-phase electrification indicator of the existing cable distribution box and the ring network cabinet can only indicate whether the cable is electrified or not, but cannot accurately display or indicate the phase sequence of the cable line, and does not have the phase verification function

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