Remote fault diagnosis method of generator excitation system

Abstract

The invention discloses a remote fault diagnosis method of a generator excitation system. The method comprises the steps that local abnormities of the generator excitation system are associated and screened according to the data screening algorithm, and effective data are compressed; abnormity and fault information of the generator excitation system is sent to a remote server; the remote server establishes an expert knowledge base to compare the abnormity and fault features of the generator excitation system and locate faults; early warning is carried out on accidents. The method has the advantages that input / output signals of a sensor and an analog quantity of the local generator excitation system are screened, and therefore extraction of effective signals is simplified; data are transmitted to the remote server in a one-way mode, and therefore the remote side is prevented from interfering with or controlling the local excitation system; the server compares the data features through the expert knowledge base so as to rapidly analyze the abnormity and fault information, find out fault causes and predicate the accidents.

Description

technical field [0001] The invention relates to a fault remote diagnosis method, in particular to a remote transmission and determination of a generator excitation system fault and early warning data information. Background technique [0002] The excitation system is the control core of the generator set. Due to the complex types of faults and many factors affecting the operation of the system, it is extremely difficult to locate and analyze the faults of the excitation system. After an abnormality occurs, relying only on local fault signal reporting and display, on-site personnel often respond slowly and are limited by technical capabilities to quickly determine the cause of the fault, let alone predict the expanded fault caused by the current abnormality. If the fault data can be submitted to the remote server or experts for fault analysis in real time, it can provide the fastest support for the site. Therefore, it is necessary to submit the abnormal data of the device t...

AI Technical Summary

Problems solved by technology

But it also has its weaknesses. Ethernet cannot guarantee the reliable transmission of information, and it is vulnerable to attacks on the Internet, and its security cannot be reliably guaranteed.

The excitation system is the control core of the generator set. If it is attacked, it will cause the generator set to be out of control and cause unpredictable losses.

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