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Underground fault explosion-proof switch positioning method

A technology of explosion-proof switch and positioning method, which is applied in the directions of fault location, fault detection according to conductor type, information technology support system, etc. The effect of accuracy

Inactive Publication Date: 2016-06-08
GUILIN UNIV OF ELECTRONIC TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Underground explosion-proof switches play a vital role in the safe operation of coal mine electromechanical equipment. Once a failure occurs and is not found in time, it will not only bring losses to coal mine production, but also cause major hidden dangers to the safety of underground personnel.
At present, the failure of the underground explosion-proof switch mainly depends on the observation and investigation of maintenance personnel to determine the specific location. Due to the large number of switches, this method is inefficient and unfavorable for underground safety production.
[0003] The existing coal mine maintenance centers usually use communication media such as optical cables and signal cables to collect fault feature quantities. This method has strong line dependence, cumbersome wiring and limited coverage.

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  • Underground fault explosion-proof switch positioning method

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Embodiment Construction

[0035] Below in conjunction with accompanying drawing and embodiment the patent of the present invention is further described.

[0036] like figure 1 As shown, it is a simple coal mine power distribution system, in which four explosion-proof switches are installed in the lines L1-L4 respectively, and each line is equipped with circuit breakers CB1-CB4 and overcurrent protectors CO1-CO4, L1 The line is also equipped with a distance protector RR1, which can add backup protection for L2, L3 and line L4. The original fault decision table of the distribution system is established by using the protection and the action of the circuit breaker, and the reduction is carried out by using the Johnson algorithm, and the unique reduction combination {CB1, CO1, CO2, CO3, CO4} can be obtained, and the fault characteristic quantity after reduction As shown in Table 1. The number 0 means that the protector or circuit breaker does not operate, and the number 1 means that the protector or circ...

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Abstract

The invention discloses an underground fault explosion-proof switch positioning method, and relates to the field of fault diagnosis. The method comprises the steps of: collecting an underground coal mine power distribution network fault characteristic quantity, and transmitting the fault characteristic quantity to a coal mine maintenance center through a Zigbee wireless communication technology; establishing and simplifying a decision table according to a rough set theory; and accomplishing fault specific positioning according to a BP neural network theory. According to the invention, by using the Zigbee wireless communication technology, the speed and the accuracy of the underground fault explosion-proof switch positioning are improved to a certain extent, and the position of a faulted explosion-proof switch is accurately and rapidly determined.

Description

technical field [0001] The invention relates to a method for locating faulty electrical equipment, in particular to a method for locating an underground faulty explosion-proof switch. Background technique [0002] Underground explosion-proof switches play a vital role in the safe operation of coal mine electromechanical equipment. Once a failure occurs and is not discovered in time, it will not only bring losses to coal mine production, but also cause major hidden dangers to the safety of underground personnel. At present, the failure of the underground explosion-proof switch mainly depends on the observation and investigation of maintenance personnel to determine the specific location. Due to the large number of switches, this method is inefficient and unfavorable for underground safety production. [0003] The existing coal mine maintenance centers usually use communication media such as optical cables and signal cables to collect fault feature quantities. This method has ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08
CPCG01R31/086Y04S10/52
Inventor 罗奕于欣波高鹏唐灵军唐亮徐晋勇陈金龙张涛
Owner GUILIN UNIV OF ELECTRONIC TECH