Determination method and system of equipment threshold value

A technology for determining methods and equipment, applied in special data processing applications, instruments, electrical digital data processing, etc., and can solve problems such as low accuracy and weak adaptability of equipment thresholds

Inactive Publication Date: 2015-11-18
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +1
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  • Abstract
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Problems solved by technology

[0003] In view of this, embodiments of the present invention provide a method and system for determining equipment thresholds to solve the problem in the prior art that equipment thresholds are estimated based on long-term maintenance experience, and the determined equipment thresholds have low accuracy and weak adaptability. question

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  • Determination method and system of equipment threshold value
  • Determination method and system of equipment threshold value
  • Determination method and system of equipment threshold value

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Embodiment Construction

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0054] figure 1 Provide a flow chart of a method for determining a device threshold value for an embodiment of the present invention. If the acquired data sample follows a normal distribution, after determining the expectation and standard deviation of the acquired data sample, calculate the data according to the determined expectation and standard deviation The significant difference threshold of the sample is used as the threshold of the equipment. If there ...

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Abstract

The embodiment of the invention provides a determination method and system of an equipment threshold value. The method comprises the following steps: obtaining a data sample of the equipment, wherein the equipment is from the same totality; judging whether the data sample complies with normal distribution or not, and if the data sample complies with the normal distribution, determining an expectation and standard difference of the data sample; and according to the expectation and standard difference of the data sample, calculating a significant difference threshold value of the data sample, and taking the significant difference threshold value as the threshold value of the equipment. The threshold value, which is subjected to substantial change, of the equipment is effectively found out, the fault hidden dangers of various pieces of equipment can be removed in time, and the precision and the adaptability of the equipment threshold value can be improved.

Description

technical field [0001] The present invention relates to the technical field of electric power systems, in particular to a method and system for determining an equipment threshold. Background technique [0002] The power system is composed of various devices, such as power transformers and current transformers, etc. The status of these devices affects the operation of the power system. In order to ensure the safe, economical and stable operation of the power system, it is necessary to regularly monitor the Local maintenance test to judge the state of each equipment, so as to eliminate the potential failure of each equipment in time. Among them, one of the keys to judge the state of each equipment is the determination of the threshold of each equipment. At present, the equipment threshold is mainly estimated based on long-term maintenance experience, and the determined equipment threshold has low accuracy and weak adaptability. Contents of the invention [0003] In view of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 孙翔何文林童力詹江杨李晨王文浩邹国平梅冰笑
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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