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A State-Based Method for Determining Accident Trends in Electrical Systems

A technology for electrical systems and determination methods, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as increased failure rate and decreased reliability

Inactive Publication Date: 2017-05-17
LIAONING TECHNICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Another factor is the working temperature. Obviously, too high or too low temperature of electrical components will lead to a decrease in reliability and an increase in failure rate, which basically obeys the cosine curve

Method used

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  • A State-Based Method for Determining Accident Trends in Electrical Systems
  • A State-Based Method for Determining Accident Trends in Electrical Systems
  • A State-Based Method for Determining Accident Trends in Electrical Systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The example is figure 1 The electrical system shown.

[0030] 5 basic electrical components in the system , , , , The failure probability of is affected by t and c, that is, the failure probability of the component ,among them Same as below, is a function of t and c as independent variables. When one of t and c fails, the component fails, according to the concept of logical OR As follows:

[0031] (1)

[0032] determine , You must first determine with . Assuming that a single component in the system cannot be repaired after a failure, the system troubleshooting is achieved by replacing the components. then It can be considered as the unit failure probability of a non-repairable system, and suppose that the failure reaches 0.9999 components should be replaced (this data can be obtained through the inverse analysis of the failure rate of a given system, which is usually much smaller than this value), as shown in Equation 2. for , The normal operation of electri...

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PUM

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Abstract

The invention discloses a method for determining accident trend of an electric system on the basis of states. The method is characterized by including: analyzing reliability of a singe component affected by two important factors affecting reliability of electrical components: operating time (t) and operating temperature (c), indicating system structure by an accident tree, simplifying the system structure through the accident tree to obtain system breakdown probability distribution under affection of two factors t and c, deriving the t and the c to obtain curved surfaces corresponding to variation degrees of the t and the c, and determining the accident trend of the electrical system. The method can be widely applied to determining the trend of breakdown of the electrical system along with variations of the t and the c under affection of multiple factors.

Description

Technical field [0001] The present invention relates to the reliability of electrical systems, and more particularly to a method for determining the accident trend of electrical systems based on status. Background technique [0002] Electrical system is the most common system in various fields, and its reliability directly affects the overall performance of the system. From a system perspective, its reliability can be divided into two parts for research. One is the basic components that make up the system. The nature of these components affects its own reliability, which in turn affects the reliability of this electrical system. The second is the structure of the system itself, that is, the way the basic components are composed. The difference in the way of composition will directly determine the extent to which the components affect the reliability of the system. The reliability of the entire system is an organic combination of the two. [0003] For the diode element in the ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 王雨虹刘艳丽王伟
Owner LIAONING TECHNICAL UNIVERSITY