Switching station feeder line automatic protection method

Abstract

Provided is a switching station feeder line automatic protection method. If any one of two inlet wires of a switching station is in a power failure and is powered off, an automatic bus transfer device in the station controls a section switch of the switching station to be switched on, and a power losing bus in the switching station is powered by the section switch. If the two inlet wires in the switching station are both in the power failure and are powered off, the automatic bus transfer device in the station controls the section switch of the switching station to be switched off, the automatic bus transfer devices in the switching station and adjacent stations control a switching station adjacent to the failure switching station to supply power to a first bus and a second bus in the failure switching station respectively through connecting lines, and the failure switching station is powered on again. The method is flexible in operating mode and high in reliability, the centralized power supply mode is adopted by the switching station, operation and maintenance management is facilitated, distribution network failures can be removed fast, non-failure sections can be powered on fast, the power failure time is reduced, power supply reliability can be improved conveniently, and the method is suitable for areas with centralized loads and high requirements for reliability.

Description

technical field [0001] The invention relates to an automatic protection method for a switch station feeder. 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 Sta...

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

Images