System and method for monitoring ground potential difference

Abstract

The invention provides a system and a method for monitoring ground potential difference. The system comprises transformer substations and an alternating-current power transmission line, wherein transformer substation grounding flat steel is connected with a neutral point of a main transformer of each transformer substation; the main transformers of the two transformer substations are connected with each other through the alternating-current power transmission line; current flowing through the alternating-current power transmission line is generated by the ground potential difference; a wave recording device is connected between each piece of transformer substation grounding flat steel and the neutral point of the main transformer of the corresponding transformer substation; the wave recording devices are in communication connection with a GSM (global system for mobile communications) / GPRS (general packet radio service) network; the GSM / GPRS network is in communication connection with a server of a monitoring master station; and each wave recording device is also connected with a GPS (global positioning system) synchronizer. A testing loop for monitoring the potential difference between the transformer substations is formed, a ground potential different monitoring network for covering a whole region is realized, a powerful basis is provided for analyzing a logical relationship between ground current activity and a power grid running mode, regional earthquake disaster monitoring and early warning platform establishment are improved, and a criterion is provided for abnormal running states of systems such as electric power systems and communication 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...

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

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