Massive blackout recovery technique for distribution grid containing distributed power supplies

Abstract

The invention discloses a massive blackout recovery technique which is realized through massive blackout recognition, effective isolation of a transfer region, analysis on a transfer load, optimized reconstruction containing distributed power supplies, dynamic adjustment operation and optimization and recovery on a running mode, power can be recovered and supplied within a short time after generation of massive blackout in a distribution grid, by means of convenience of distribution automation, a larger number of switching operation can be completed within the short time, during the process, the transfer region is effectively isolated to guarantee power supply safety, during optimized reconstruction of the distributed power supplies, a reasonable starting principle and a calculation mode are adopted to ensure the feasibility and rationality of a reconstitution scheme, during dynamic operation adjustment, small-range network reconstruction is adopted to the greatest extent during secondary network reconstruction so as to ensure time requirement of calculation speed and power recovery, and after fault removal and bus decompression relief, the original running mode can be timely recovered so as to guarantee optimized running of the running mode.

Description

technical field [0001] The invention relates to a power failure recovery technology, in particular to a large-area power failure recovery technology for a distribution network including distributed power sources, which belongs to the fault processing technology in a power distribution automation system. Background technique [0002] The distribution network fault isolation and power supply recovery methods in the prior art are all aimed at the situation of small disturbances such as feeder faults in the distribution network. However, natural disasters (ice disasters, snow disasters, earthquakes, etc.), external damage caused by the collapse of the transmission line tower or fault maintenance of the transmission line, etc., will cause one or more 10KV busbars to lose voltage. , if it is not possible to ensure that all the loss-of-voltage buses are restored to power on the high-voltage side, it will cause large-scale and long-term power outages in the distribution network. Al...

AI Technical Summary

Problems solved by technology

However, natural disasters (ice disasters, snow disasters, earthquakes, etc.), external damage caused by the collapse of the transmission line tower or fault maintenance of the transmission line, etc., will cause one or more 10KV busbars to lose voltage. , if it is not possible to ensure that all the voltage-loss busbars are restored to power on the high-voltage side, it will cause a large-scale and long-term power outage in the distribution network

Although the 10KV bus voltage failure is a small probability event, once it occurs, it will cause a large-scale power outage, which is extremely harmful

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