Split-phase phase searching device

Abstract

The invention discloses a split-phase phase searching device, which comprises a signal oscillator and a phase checking device, and is characterized in that the signal output end of the phase searchingdevice is in signal connection with the signal connection end of the signal oscillator, and the signal output end of the signal oscillator is connected with the wire port of an A-phase cable; according to the invention, the phase checking workload of each power supply station in daily operation and maintenance work is solved, and the original work which needs to be assisted by a plurality of persons and takes two hours is shortened to several minutes to finish the work; and according to the nuclear phase device, nuclear phase errors caused by large number of regional distribution transformers, insufficient personnel allocation and careless omission of each power supply station are solved, and the nuclear phase errors can be effectively avoided through the nuclear phase device.

Description

technical field [0001] The invention relates to the technical field of power line operation and maintenance equipment, in particular to a phase separation and phase finding device. Background technique [0002] In the daily operation of the distribution transformer, there will be unbalanced three-phase load, single-phase or two-phase heavy overload, low voltage and so on. Since the distribution transformer has been operating under heavy overload and three-phase unbalanced conditions for a long time, it not only damages the distribution transformer, but also reduces the quality of power supply for users. The impact of the distribution transformer is mainly reflected in: (1) When the distribution transformer is overloaded, since the copper loss is proportional to the square of the load current, the copper loss increases rapidly as the load increases, which reduces the efficiency of the transformer. (2) The temperature of the whole or part of the distribution transformer is to...

AI Technical Summary

Problems solved by technology

The impact of the distribution transformer is mainly reflected in: (1) When the distribution transformer is overloaded, since the copper loss is proportional to the square of the load current, the copper loss increases rapidly when the load increases, which reduces the efficiency of the transformer

(2) The temperature of the whole or part of the distribution transformer is too high, which will cause the insulating material in the transformer to gradually lose its original mechanical properties. The higher the temperature, the faster the insulation will age, and the coil will lose the protection of the insulation layer. In severe cases, the transformer will be burned

The impact of customers is mainly reflected in: (1) During the peak period of electricity consumption, it may cause low voltage conditions for some users far away from the distribution transformer.

(2) It is easy to cause tension in customer relationship, decrease in customer satisfaction and increase in customer complaint rate

Since the low-voltage distribution network currently adopts a three-phase four-wire system and the wires are all black, it is difficult for the operation and maintenance personnel to verify the phase number of the wires on site

Especially in cities, because most of the low-voltage outlets are wrapped, it is not easy to verify the phase number of the wires

Existing nuclear phase equipment is not only expensive, but also inconvenient to carry during use

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