Distributed protection method with adaptive communication rate capability and medium

Abstract

The invention provides a distributed protection method with self-adaptive communication rate capability and a medium, which are applied to a power distribution system using an intelligent distributed feeder automation technology, and adjacent switches in a cable network line of the power distribution system perform remote communication by adopting a mobile communication technology. The distributed protection method comprises the following steps: when a switch in a control cable network line detects that a fault occurs in the line, if the line is in a normal communication delay, performing fault removal and isolation according to a quick-acting strategy, and if the communication delay is too high, automatically switching to a slow-acting strategy to perform fault isolation. According to the invention, fault positioning can be accurately realized and power system protection can be started.

Description

technical field [0001] The invention relates to the technical field of power system protection, and mainly relates to a distributed protection method and medium with adaptive communication rate capability. Background technique [0002] The existing power system protection mostly adopts intelligent distributed feeder automation technology. The so-called intelligent distributed feeder automation technology uses high-speed peer-to-peer communication network to share the status information of adjacent switches, and handles line faults through reliable and effective algorithm processing. Rapid positioning, isolation and transfer of non-fault lines to power supply operations. Intelligent distributed feeder automation technology can solve the impact of large-scale networks, complex networking methods, and changes in operating modes on power system relay protection, ensuring reliable power supply of lines. However, the existing intelligent distributed feeder automation technology i...

AI Technical Summary

Problems solved by technology

[0006] 1) Due to the communication signal delay problem, the fault location result is inaccurate, resulting in the actual power outage area being too large;

[0007] 2) When the multi-point communication signal delay is high, multiple fault isolation areas will be generated

[0008] How to develop a technical method that can solve the above problems is what those skilled in the art need to solve, and the application number is: 2021224375550 A feeder automation terminal with adaptive distributed protection function, which mentions how to pass The hardware structure is used to realize the two fault handling methods, but the application does not protect the specific distributed protection method, and the specific distributed protection method can better realize the switching between the two fault handling methods

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