Blockchain-based micro-pmu fault recording coordination method and system for distribution network

Abstract

This disclosure provides a blockchain-based micro-PMU fault recording coordination method and system for distribution network. All micro-PMUs serve as nodes of the blockchain network to build a blockchain network and start the judgment process: After the fault recording is triggered, it will be broadcast to the entire blockchain network to notify other micro-PMUs to cooperate with the recording. When some micro-PMUs use the built-in fault criteria to judge the fault based on the real-time detected fault characteristics and start the fault recording, it will automatically Take the appropriate action. The disclosure realizes the decentralized management independent of the main station and the coordination and autonomy among 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

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