Full-life intelligent monitoring gas density relay and implementation method thereof

Abstract

The invention provides a full-life intelligent monitoring gas density relay and an implementation method thereof. The full-life intelligent monitoring gas density relay comprises a gas density relay body, a gas density detection sensor, a valve, a pressure adjusting mechanism, an online verification contact signal sampling unit and an intelligent control unit. The valve and the gas density relay body are arranged on the pressure adjusting mechanism, the valve is opened or closed under the control of the pressure adjusting mechanism, and a gas circuit of the gas density relay body is connectedwith electrical equipment during work and separated from the electrical equipment during verification. The pressure adjusting mechanism comprises a first cavity, a second cavity and a third cavity which are connected end to end, the first cavity is slidably provided with a first pressure changing piece, the first pressure changing piece can enter and exit from the second cavity, and the third cavity is slidably provided with a second pressure changing piece; and the second pressure change piece can quickly adjust pressure rise and fall of the gas density relay body, and the first pressure change piece can slowly adjust the pressure rise and fall of the gas density relay body so as to achieve precise verification of the density relay.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a gas density relay which is applied to high-voltage and medium-voltage electrical equipment and intelligently monitors its entire life and its realization method. Background technique [0002] The role of SF6 gas in high-voltage electrical equipment is arc extinguishing and insulation. If the density of SF6 gas in high-voltage electrical equipment decreases and the micro-water content exceeds the standard, it will seriously affect the safe operation of SF6 high-voltage electrical equipment: the density of SF6 gas will decrease to a certain level. Loss of insulation and arc extinguishing properties. [0003] With the continuous vigorous development of China's smart grid, intelligent high-voltage electrical equipment, as an important part and key node of the smart substation, plays a pivotal role in the security of the smart grid. At present, most high-voltage electrical ...

AI Technical Summary

Problems solved by technology

At present, the calibration of gas density relays has been highly valued and popularized in the power system, and all power supply companies, power plants, and large factories and mines have implemented it, and power supply companies, power plants, and large factories and mines have completed the on-site calibration of gas density relays. The detection work needs to be equipped with test personnel, equipment vehicles and high-value SF6 gas. Including the power outage business loss during the detection, roughly calculated, the annual detection cost of each high-voltage switch station is about tens of thousands to hundreds of thousands of yuan. , In addition, if the inspectors do not perform the on-site verification, there are still potential safety hazards

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