Power distribution net rack wiring structure

Abstract

The invention discloses a power distribution net rack wiring structure which comprises multiple single-ring net rack structures, wherein a connection line is arranged between two groups of single-ring net rack structures; the power distribution net rack wiring structure is in a single-ring net three-power supply (two main power supplies and one backup power supply) wiring mode; the single-ring net rack structure comprises two power stations and a ring main unit and multiple box-type transformers connected in series between the two power stations; the single-ring net rack structure also comprises a connection switch; the connection switch is arranged on each box-type transformer and is a normally-open switch. The power distribution net rack wiring structure disclosed by the invention has high power supply reliability; with the centralized power supply mode of the switch station, the operation and maintenance management is facilitated.

Description

technical field [0001] The invention relates to a wiring structure of a distribution grid. Background technique [0002] Shanghai is the largest city in my country, one of the four central municipalities, and the center of my country's economy, finance, trade and shipping. In 2012, Shanghai's GCP reached 2.01 trillion yuan, ranking 11th in the world. The per capita GCP and per capita disposable income rank first in all provinces, autonomous regions and municipalities directly under the Central Government. Shanghai is currently in a critical period of "industrial transformation" and is striving to build "four centers" - an international economic center, an international financial center, an international trade center, and an international shipping center. This puts forward higher requirements for the city's power supply capacity. . [0003] Shanghai Pudong New Area covers an area of ​​1210.41 square kilometers. Since the Party Central Committee and the State Council decide...

AI Technical Summary

Problems solved by technology

[0007] 1. The section capacity of the overhead line is too large, and the connection is too small;

[0008] 2. Type III distribution stations built according to old standards do not conform to current technical principles;

[0009] 3. Atypical wiring exists in overhead lines

[0014] 4. The overall number of switching stations is relatively small, and the interval of 10kV is tight;

[0015] 5. There is a large ring network and a small ring network structure, which brings technical difficulties to the deployment of distribution automation;

[0016] 6. The horizontal connection of the network frame is weak, and the load transfer capacity of the network frame is limited

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