Comprehensive diagnosing method for operation troubles of power transformer based on multiple parameters

Abstract

The invention discloses a comprehensive diagnosing method for operation malfunctions of a power transformer based on multiple parameters. The comprehensive diagnosing method comprises the following steps: step 1, collecting and processing data of all operating parameters of the transformer and obtaining an input parameter: X'={X1',X2',X3,...,X10',X11'X12'}; step 2, assessing the initial state of the transformer by using an unilateral characteristic quantity, judging whether the transformer is in malfunctions or normal operating aging; step 3, conducting a comprehensive malfunction diagnosis, if transformer malfunctions are initially detected in step 2, then conducting a malfunction comprehensive diagnosis on the transformer by using the multiple parameters through a decision-making tree generated by ID3 algorithm. According to the comprehensive diagnosing method for the operation malfunctions of the power transformer based on the multiple parameters, an comprehensive integrated judgment on the malfunction state of the transformer can be achieved in a more accurate and quick manner.

Description

technical field [0001] The invention belongs to the technical field of transformer on-line monitoring, and in particular relates to a multi-parameter-based comprehensive diagnosis method for operating faults of power transformers. Background technique [0002] With the rapid development of power grid construction, my country's power grid has developed from an isolated power grid in cities to a regional power grid, with power transmission from west to east, mutual supply from north to south, and a national network pattern is taking shape. The power system is a large system connected by many sending, sending, transmitting, distributing, and consuming equipment. The reliability and operation status of these equipment directly determine the stability and safety of the entire system, and also determine the quality and reliability of power supply. , The transformer is the power equipment responsible for voltage conversion, power transmission and terminal distribution in the power ...

AI Technical Summary

Problems solved by technology

However, due to the complex structure of power transformers, and the faults of power transformers are often caused by various reasons, the symptoms of different faults sometimes have similarities, randomness, human interference factors, and errors in diagnostic equipment and methods. Transformers in China are facing increasingly serious problems such as equipment failure and insulation aging. Once an accident occurs, it will cause huge losses such as equipment assets and large-scale power outages.

At present, the traditional transformer fault diagnosis method has incomplete coding and cannot cover all possible transformer faults

The single intelligent fault diagnosis method has problems such as difficulty in initial parameter setting and poor generalization ability, which restricts the improvement of fault diagnosis accuracy

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