A Hierarchical Evaluation Method for Power Transformer Reliability
A power transformer and reliability technology, applied in the fields of instruments, electrical digital data processing, special data processing applications, etc., can solve the problem of inability to provide necessary assistance for equipment accident prevention and maintenance strategy implementation, inability to provide necessary information, and lack of equipment reliability. Targeted assessment, etc.
Active Publication Date: 2016-08-10
STATE GRID CORP OF CHINA +2
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Problems solved by technology
At present, the reliability theoretical model widely used for power transformers is mainly established based on the statistical method of actual operating equipment. This method is usually the result of a general analysis of the reliability of a type of equipment, and lacks a targeted assessment of the reliability of specific equipment. , unable to provide the necessary information needed for further implementation of maintenance, and unable to provide necessary help for the implementation of equipment accident prevention and maintenance strategies
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[0056] The present invention will be further described in detail below in conjunction with the drawings.
[0057] Such as figure 1 , The present invention provides a hierarchical evaluation method for reliability of power transformers. The method includes the following steps:
[0058] Step 1: According to the state of health of the power transformer, the reliability of the power transformer is divided into basic reliability, hidden danger state reliability and abnormal state reliability;
[0059] Step 2: Evaluate the basic reliability, hidden danger state reliability and abnormal state reliability of the power transformer respectively.
[0060] The basic reliability is the reliability when the power transformer does not have any status information; the hidden danger state reliability is the reliability when the power transformer is known to have experienced bad working conditions; the abnormal state reliability is the detection of the power transformer Reliability after failure sympt...
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The invention provides a hierarchical evaluation method for power transformer reliability, which includes the following steps: according to the health status of the power transformer, the reliability of the power transformer is divided into basic reliability, hidden danger state reliability and abnormal state reliability; The basic reliability, hidden danger state reliability and abnormal state reliability are evaluated separately. The power transformer reliability hierarchical evaluation method provided by the present invention can evaluate the reliability of the power transformer according to the actual operation status and experience of the power transformer, and calculate the reliability of the specific power transformer under the comprehensive action of various influencing factors, so as to provide a comprehensive evaluation method for the power transformer. provide a basis for management.
Description
Technical field [0001] The invention relates to an evaluation method for electrical equipment, in particular to a hierarchical evaluation method for reliability of power transformers. Background technique [0002] During the application process, power transformers are affected by load and environment, and will gradually wear out. The reliability of power transformers is an important index for evaluating the safety of power grids. In order to accurately and comprehensively evaluate the reliability of equipment, it is necessary to fully consider the comprehensive effects of equipment operating status, operating conditions and operating environment. [0003] The power transformer structure includes iron core, primary winding / secondary winding, bushing, oil tank and cooling system, sometimes with auxiliary external cooler and tap change device. In principle, all these groups and components may fail, but the probability of occurrence varies greatly. At present, the reliability theory ...
Claims
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IPC IPC(8): G06F19/00G06Q50/06
Inventor 刘锐高文胜李金忠张书琦
Owner STATE GRID CORP OF CHINA