High frequency electromagnetic pulse-based transformer station grounding grid corrosion detection system and method

Abstract

The invention relates to a high frequency electromagnetic pulse-based transformer station grounding grid corrosion detection system and method. The system includes: a power module; a signal transmitting module connected with a grounding grid and used for generating and transmitting high frequency electromagnetic pulse signal to the grounding grid; a signal receiving module connected with the grounding grid and used for receiving the high frequency electromagnetic pulse signals reflected by a conductor of the grounding grid and performing filtering and amplification on the signals; a control unit module connected with the signal transmitting module and the signal receiving module and used for controlling transmission and reception of the high frequency electromagnetic pulse signals and receiving data and signals transmitted by the signal receiving module; a signal analysis display terminal which is connected with the control unit module and receives the data and signals transmitted by the control unit module; and a detection trolley used for carrying the detection system. Compared with the prior art, the high frequency electromagnetic pulse-based transformer station grounding grid corrosion detection system provided by the invention has the advantage of guaranteeing safe and stable operation of a transformer station.

Description

technical field [0001] The invention relates to the technical field of power system fault detection, in particular to a detection system and method for substation grounding grid corrosion based on high-frequency electromagnetic pulses. Background technique [0002] The grounding grid is an important part of the substation. It provides a common potential reference point for various equipment in the substation, provides a current discharge channel when a short-circuit fault occurs in the power system or is struck by lightning, and reduces the potential rise of the substation. Its work is reliable. Sexuality has a great impact on the safe and stable operation of the power system. [0003] The substation grounding grid has been buried at a depth of 0.8m for a long time, and is often corroded by the electrochemical action of the soil. The corrosion of the grounding grid is more serious in the soil with strong acidity and alkalinity. The corrosion of the grounding grid is a gradu...

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Problems solved by technology

However, when using this method for detection, some conductors need to be excavated to place ultrasonic transducers, and the detection results will be greatly affected by the arrangement of the transducers, which limits its application in engineering

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