Power distribution network micro PMU fault recording cooperation method and system based on block chain

Abstract

The invention provides a power distribution network micro PMU fault recording cooperative method and system based on a block chain. All micro PMUs are used as nodes of a block chain network, the blockchain network is constructed, and the judgment process is started: when any micro PMU triggers fault recording, the fault recording is broadcasted to the whole block chain network, other micro PMUs are informed to carry out fault recording in a coordinated mode, and when certain micro PMUs judge the fault according to fault characteristic quantity detected in real time by means of built-in faultcriteria, the fault recording is started, and corresponding operation is automatically executed. The power distribution network micro PMU fault recording cooperative method and system based on the block chain realize decentralized management independent of a master station and coordination and autonomy among the micro PMUs.

Description

technical field [0001] The present disclosure relates to a blockchain-based micro-PMU fault recording coordination method and system for a distribution network. Background technique [0002] The distribution network is an important part of the power system and is closely related to users. Distribution network fault diagnosis technology directly affects the reliability of power supply and the safe operation of distributed power generation. Because of some special types of faults, such as weak fault characteristics and large noise interference, it has always been a research hotspot. The data basis of fault diagnosis is the fault recording signal. The traditional distribution network fault recording has been the bottleneck factor in fault diagnosis due to the limitations of fewer distribution points and no time stamp, which is difficult to synchronize. [0003] The emergence of micro-PMU device has brought new opportunities for fault diagnosis of distribution network. It inte...

AI Technical Summary

Problems solved by technology

Existing schemes can generally realize the coordinated control of the master station for the start-up of micro-PMU fault recording, but most of the current schemes are that the master station is the key link of signal forwarding, and there are many problems

The master station receives the synchronized phasor signals uploaded at a high rate from each device in real time, and performs tasks with strong real-time characteristics such as state estimation and coordinated control. On the basis of ensuring these basic tasks, it starts the information based on the fault recorder uploaded in real time by the micro-PMU Make judgments and send start signals to other micro PMUs according to the communication protocol. The time spent in this process will increase with the expansion of the network scale and the increase of the task burden of the master station, and even exceed the fault existence time, so that it may be delayed. Micro PMU fault recording

Images