Digital type dispersed software/hardware fault-tolerant type protection technique

Abstract

The invention relates to a fault-tolerant protecting technology for digital discrete software and hardware, comprising the discrete technology and the fault-tolerant technology; wherein, the discrete technology realizes the discreteness of protecting software and hardware by distributed protection of CPU system based on double-loop network structure. The fault-tolerant technology comprises that: the hardware fault tolerance is realized by parallel processing of multi-CPU; protecting principle algorithm fault tolerance is realized by smart ANN technology; based on the different digital filters employed by power frequency parameter protecting principle and the wavelet filters employed by transient protection of transient signal; the filter is designed with a view to the dynamic fault-tolerant performance index, to improve the dynamic fault-tolerant performance of digital filtering algorithm; bad data in the data protection is detected and rejected which realizes information fault tolerance. The invention adopts the structure of discrete software and hardware, and the hardware employs fault-tolerant design, and the software allocates the functions of hardware; thus the invention has the advantages of algorithm fault tolerance and information fault tolerance, which respectively take the hardware adventure of the protection unit and the software adventure of the protection unit and the reliability of protection unit is improved.

Description

technical field [0001] The invention relates to a relay protection technology of an electric power system, in particular to a digital decentralized software and hardware fault-tolerant protection technology, which belongs to the technical field of electric power automation. Background technique [0002] After the national network and the marketization of electricity, higher requirements have been put forward for the safety, reliability and speed of relay protection. How to ensure that the digital protection used in ultra-high voltage protection and distributed power generation can be fast and fast when faults occur in the protection area? Reliable action, and reliable non-misoperation in the event of an out-of-area fault, this puts forward new tasks and requirements for relay protection workers. The current protection device mainly adopts a single system and integrated structure, which concentrates all the functions of the device in one CPU, and relies too much on the reliab...

AI Technical Summary

Problems solved by technology

The current protection device mainly adopts a single system and integrated structure, which concentrates all the functions of the device in one CPU, and relies too much on the reliability of the hardware in technology. When the reliability of the system is not good, It is easy to cause the protection device to lose part or all of its functions, and the existing protection method cannot effectively distinguish between faults in the zone and faults outside the zone, so it is necessary to break through the existing protection method and propose a new solution, digital decentralized software and hardware fault tolerance It is under the current background that the type protection technology is proposed

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