Method for measuring contacted power frequency electric field intensity and magnetic field intensity when operating personnel of transformer substation inspect

A technology of operating personnel and power frequency electric field, applied in the size/direction of magnetic field, electromagnetic field characteristics, time register and other directions, which can solve problems such as not much research.

Active Publication Date: 2013-12-25
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are not many studies on the intensity of power-frequency electric field and power-frequency magnetic field that operators are exposed to, and there is a lack of measurement methods for the intensity of power-frequency electric field and power-frequency magnetic field that operators of substations are exposed to during inspections.

Method used

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Embodiment Construction

[0029] Below in conjunction with embodiment the present invention is further described.

[0030] A method for measuring the power frequency electric field intensity of substation operators when they are patrolling is as follows:

[0031] 1. A 500kV operator has a working shift of 2 days and 48 hours, and a total of 6 inspections in a working shift.

[0032] 2. The total inspection distance of the operating personnel is 1200 meters, and there are 75 inspection points that need to stay, including: bus CVT, line switch, line CT, main transformer switch, etc.

[0033] 3. When the operator makes a single inspection, the total inspection time T 巡 90 minutes, the total stay time at the inspection point is 65 minutes, and the walking time of the inspection route is 25 minutes.

[0034] 4. There are 15 inspection points where the power frequency electric field strength exceeds 5kV / m, and the total stay time of the above inspection points is 15 minutes.

[0035] 5. The inspection rou...

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PUM

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Abstract

The invention relates to a method for measuring contacted power frequency electric field intensity and magnetic field intensity when operating personnel of a transformer substation inspect. The method can most really reflect the level of the contacted power frequency electric field intensity and magnetic field intensity when the operating personnel of the transformer substation inspect. The method includes the detailed steps that A, an inspection route map, inspection time T for single inspection and inspection route total distance L of the operating personnel are recorded; B, inspection route inspection points where the operating personnel need to stay and stay time tn in all the inspection points (tn expresses the stay time in the n inspection point) are recorded; C, equal-distance point distribution is performed on an inspection route, the distance D between distribution points can be selected freely, and the larger the D is, the lower the accuracy of an obtained result is; D, power frequency electric field intensity and magnetic field intensity of all the inspection points and all the distribution points are detected; E, calculating and analyzing are performed on the contacted power frequency electric field intensity and magnetic field intensity when the operating personnel inspect, so that the level of the contacted power frequency electric field intensity and magnetic field intensity when the operating personnel of the transformer substation is obtained.

Description

Technical field: [0001] The invention relates to a method for measuring the strength of power frequency electric field and power frequency magnetic field, in particular to a method for measuring the strength of power frequency electric field and magnetic field that operators of substations are in contact with when patrolling. Background technique: [0002] The power frequency electric field and power frequency magnetic field are the main factors that may cause harm to the human body in the substation. The daily work of the substation operators is mainly on-site inspection and monitoring in the control room. The power-frequency electric field and magnetic field in the control room are relatively small, and are less harmful to operators. Operators are exposed to high-intensity power-frequency electric fields and magnetic fields mainly from on-site patrol operations. [0003] Studies have shown that the impact of power frequency electric fields and power frequency magnetic fiel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/08G01R33/02G07C1/10
Inventor 刘跟生巩泉泉周灿张兆波陈超张国英王坤窦丹丹
Owner STATE GRID CORP OF CHINA
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