Main wiring system of medium-voltage power distribution cabinet

Abstract

The invention provides a main wiring system of a medium-voltage power distribution cabinet. The main wiring system comprises a metering cabinet, a PT cabinet, an incoming cabinet and a feeder cabinet, wherein the metering cabinet comprises a first current transformer, a first fuse, a metering voltage transformer, a first charged display and a first arrester; an incoming line terminal of the metering voltage transformer sequentially passes through the first fuse and the first current transformer and is connected with a medium-voltage bus; an outgoing line terminal of the first current transformer sequentially passes through the first charged display and the first arrester and is grounded; the PT cabinet comprises a three-winding voltage transformer and a second fuse; the incoming line terminal of the three-winding voltage transformer passes through the second fuse and is connected with the medium-voltage bus; the incoming line terminal of the second fuse passes through a second arrester and is grounded. The main wiring system of the medium-voltage power distribution cabinet is simple in structure and convenient to use; the fault rate of the system is reduced; the electric energy quality is improved; the power reliability is ensured; the electric cost expenditure is reduced; and the reliability of a power distribution network is improved.

Description

technical field [0001] The invention relates to the technical field of power grid distribution, in particular to a main wiring system of a medium-voltage power distribution cabinet. Background technique [0002] At present, the reliability of the user-side power distribution system is one of the important indicators for the assessment of power supply enterprises, and it also reflects the operation status and technical management level of the power supply network. An important indicator of the degree of power development. With the development of the times, the user's power distribution system requires higher reliability, more flexible intelligence, easier operation, more energy-saving operation, simpler maintenance, and higher safety performance. At present, there is no unified standard user-side power distribution system solution in the power market, but the types of customer equipment are relatively complicated, the requirements for individualization are relatively strong,...

AI Technical Summary

Problems solved by technology

At present, there is no unified standard user-side power distribution system solution in the power market, but the types of customer equipment are relatively complicated, the individual requirements are relatively strong, and the market is becoming more and more open, which brings difficulties to user-side power distribution

Moreover, because the power measuring equipment is not independent, there is also a hidden danger of power theft, which is likely to increase the line loss rate

In addition, there are certain unsafe factors in the existing wiring method

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