A system and method for monitoring earth potential difference

A potential difference and earth technology, applied in measuring devices, measuring electrical variables, measuring current/voltage, etc., can solve the problems of not being able to build an observation network covering an area, large investment, etc., and achieve the effect of perfecting the construction of earthquake disaster monitoring and early warning platforms

Active Publication Date: 2017-11-28
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, in the aspect of earth potential difference observation, it is necessary to lay a special measurement circuit, generally no more than 10 kilometers, the investment is huge, and it is impossible to build an observation network covering a wide area

Method used

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  • A system and method for monitoring earth potential difference
  • A system and method for monitoring earth potential difference
  • A system and method for monitoring earth potential difference

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing, the present invention is further described:

[0027] like figure 1 As shown, a system for monitoring earth potential difference includes a substation and an AC transmission line 3, and is characterized in that: the substation grounding flat steel 1 of the substation is connected to the substation main transformer 2, and the substation main transformer 2 of the two substations passes through The AC transmission line 3 is connected, and the earth potential difference generates a current flowing through the AC transmission line 3. The neutral point where the ground flat steel 1 of the substation is connected to the main transformer 2 of the substation is connected with a wave recording device 4, and the wave recording device 4 is connected to the GSM / GPRS network 5 communication connection, GSM / GPRS network 5 is connected with monitoring general station server 6 communication, wave recording device 4, GSM / GPRS network 5 and ...

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Abstract

The invention provides a system and method for monitoring the earth potential difference, including a substation and an AC transmission line, the ground flat steel of the substation is connected to the neutral point of the main transformer of the substation, the main transformers of the two substations are connected through the AC transmission line, and the earth potential difference is generated For the current flowing through the AC transmission line, there is a wave recording device connected between the ground flat steel of the substation and the neutral point of the main transformer of the substation. The wave device is also connected with a GPS synchronization device. The invention forms a potential difference test circuit for monitoring substations, realizes a ground potential difference monitoring network covering the entire area, and provides a powerful basis for the analysis of the logical relationship between the ground current activity and the grid operation mode. To improve the construction of regional earthquake disaster monitoring and early warning platform, and provide criteria for abnormal operation status of power, communication and other systems.

Description

technical field [0001] The invention relates to a system and method for recording and real-time monitoring of the earth potential difference at both ends of the line by monitoring the DC current flowing through the neutral point of the power transformer by using an AC transmission line of 110kV and above and a substation. Background technique [0002] Earthquake is one of the major natural disasters on the earth. In recent years, earthquake disasters have been frequent. The seismic waves generated by earthquakes can directly cause damage or even collapse of buildings. If they occur in mountainous areas, they may also cause disasters such as landslides. Casualties and property caused by earthquakes The loss is immeasurable. Earthquakes will cause changes in the local potential of the earth. By analyzing the law of the earth's potential difference, it is helpful to improve the monitoring and early warning methods of regional earthquake disasters. [0003] Solar magnetic storm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/00
Inventor 阮羚全江涛邱凌王亮童歆
Owner STATE GRID CORP OF CHINA
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