Intelligent transformer substation grounding network anti-corrosion and monitoring system

Abstract

The invention discloses an intelligent transformer substation grounding network anti-corrosion and monitoring system, which is composed of a constant potential rectifier, a corrosion on-line detectionsensor, a temperature and humidity sensor, an isolation amplifier, an analog-to-digital converter, a single chip device, an upper computer, a 3G data and image transmission unit, a remote detection client and the like; the signals transmitted by the constant potential rectifier, the corrosion on-line detection sensor and the temperature and humidity sensor are isolated and amplified by the isolation amplifier, enters into the analog-to-digital converter for A / D conversion, the result is converted and transmitted to the single chip to be transmitted to the upper computer, the 3G data and imagetransmission unit, and the remote detection client. The system can achieve the aims of effectively mitigating corrosion on the grounding network, prolonging service life of the grounding network andremote monitoring in real time.

Description

technical field [0001] The invention relates to a metal anti-corrosion and monitoring system, in particular to an applied current cathodic protection, corrosion detection and wireless remote monitoring system for a substation grounding grid. Background technique [0002] The substation grounding grid is an essential facility for working grounding, lightning protection grounding, and protective grounding. It is an important link to ensure the safety of people, equipment, and systems. effect. With the development of ultra-high voltage power transmission and transformation, the importance of grounding grid becomes more obvious. However, the damage caused by the corrosion of the grounding grid is huge, which directly leads to the reduction of the cross-section of the grounding grid, or even fracture. Indirectly lead to misoperation or refusal of monitoring or control equipment to expand the accident, or even damage the equipment, expand the accident, destroy the stability of t...

AI Technical Summary

Problems solved by technology

The disadvantage is that the soil corrosion rate is slow, and the filter is easy to filter out the weak signal. The noise or false data collected by the sensor has a great influence on the actual corrosion signal, so that the measured corrosion rate is not the actual corrosion rate; the state sensor of this device has no Connected with the grounding grid, the corrosion rate of the grounding grid when it leaks is greater than the corrosion rate of the soil alone, resulting in a significant difference between its working state and the actual grounding grid; although this device uses multiple state sensors to characterize the corrosion of the entire grounding grid, And the calculation of transient and steady state is adopted, but the soil properties in different places are different, resulting in a large error between the calculated value and the actual value

In addition, parameters such as the protection voltage and current of the grounding grid are closely related to environmental conditions. For example, in rainy and dry seasons, the protection potential and protection current will change. The above-mentioned patents do not consider the influence of environmental conditions on corrosion protection parameters.

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