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Intelligent substation grounding grid corrosion condition real-time monitoring system and method

A technology for real-time monitoring systems and substation grounding grids, applied in weather resistance/light resistance/corrosion resistance, measuring devices, short-circuit tests, etc., can solve problems such as safety accidents, unbalanced potential distribution, local potential difference of the grounding system, etc., to achieve The effect of avoiding safety accidents

Inactive Publication Date: 2020-10-13
STATE GRID FUJIAN ELECTRIC POWER CO LTD +2
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Problems solved by technology

When a lightning strike or a grounding short-circuit fault occurs in a substation, a huge lightning current or short-circuit current flows into the ground through the grounding system, which will cause a rise in ground potential and an unbalanced potential distribution on the grounding system. If the grounding system of the substation is due to soil corrosion and other reasons Defects will cause the local potential difference of the grounding system to exceed the safety threshold, thus causing safety accidents and chain reactions

Method used

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  • Intelligent substation grounding grid corrosion condition real-time monitoring system and method
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  • Intelligent substation grounding grid corrosion condition real-time monitoring system and method

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Please refer to figure 1 , the present invention provides a real-time monitoring system for the corrosion of grounding grids in intelligent substations, including a monitoring background, a main control unit and a sub-control measurement unit; The analog signal is converted into a digital signal and sent to the monitoring background in real time through the field data bus; the monitoring background analyzes the preprocessed data and displays the data of each loop.

[0023] Preferably, in this embodiment, the sub-control measurement unit adopts an integrated electronic sensor.

[0024] refer to image 3 , preferably, in this embodiment, the sub-control measurement unit is set on the grounding down-conductor of the smart substation through the grounding monitoring coil, which is equal to the number of grounding down-conductors; the non-ground end...

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Abstract

The invention relates to an intelligent substation grounding grid corrosion condition real-time monitoring system which comprises a monitoring background, a main control unit and a sub-control measurement unit. The sub-control measurement unit is controlled by the main control unit, collects analog signals containing substation grounding grid corrosion condition information in a time-sharing mode,converts the analog signals into digital signals and then sends the digital signals to the monitoring background in real time through a field data bus; and the monitoring background analyzes the preprocessed data and displays the data of each loop. The intelligent substation grounding grid corrosion condition real-time monitoring system can monitor corrosion condition of the substation groundinggrid in real time.

Description

technical field [0001] The invention relates to the technical field of on-line monitoring of power systems, in particular to a real-time monitoring system and method for corrosion of grounding grids in intelligent substations. Background technique [0002] A good and stable grounding system is the fundamental guarantee for the safe operation of substations, and an important measure to ensure the personal safety of operation and maintenance personnel and reliable operation of equipment. With the rapid development of China's social and economic construction, the capacity of the power system is continuously increasing, and the level of short-circuit current of equipment is also continuously increasing. People's requirements for the safe and stable operation of the power grid are also getting higher and higher. According to incomplete statistics, safety accidents caused by defects in the grounding system of my country's power grid have occurred frequently, and the direct economi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/52G01N17/00
CPCG01R31/52G01N17/006
Inventor 李扬森张成炜柳松王亮陈秉乾王鹏飞
Owner STATE GRID FUJIAN ELECTRIC POWER CO LTD
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