Intelligent sensor integrating transformer oil gas, partial discharge and micro-water detection

Abstract

The invention relates to an intelligent sensor integrating transformer oil gas, partial discharge and micro-water detection. The sensor comprises a first cylindrical metal body, an in-oil gas detection sensor, a partial discharge detection sensor, a micro-water detection sensor, a circuit board, an antenna, a power supply circuit board, a battery module, a power interface, a first cable, a secondcable, a second cylindrical metal body, a metal flange and a contact surface of insulating oil in a transformer oil drain pipe. Integrated comprehensive monitoring of dissolved gas, partial dischargeand micro-water in oil is achieved, the reliability of the device is improved, the state sensing cost is reduced, the comprehensive utilization rate of various types of data is increased, and latencysudden faults of the transformer are finally reduced. The sensor is compatible with multiple energy taking and communication modes, and the flexibility of installation, use and maintenance is high. Synchronous detection of oil gas, partial discharge and micro-water detection of the transformer can be realized, and detection data can be processed and sent. Meanwhile, the sensor is compatible with various power supply modes and various wireless communication modes.

Description

technical field [0001] The invention belongs to the technical field of on-line monitoring of power equipment status, and in particular relates to an intelligent sensor for the detection of transformer oil gas, partial discharge and micro-water. The sensor can realize the detection of gas, partial discharge and micro water in the transformer oil at the same time, and realize the intelligent detection of various insulation parameters of the transformer. Background technique [0002] The transformer is the core equipment of the power system, and its operation and maintenance quality is directly related to the operation reliability of the power grid. Accurate acquisition of transformer operating status is the basis for targeted and differentiated operation and maintenance. Benefiting from the rapid development of detection, communication, data processing and other technologies, live detection and online monitoring have become effective tools to obtain the operating status of tr...

AI Technical Summary

Problems solved by technology

During the long-term operation of the device, failures such as unstable oil circulation mechanism and insufficient carrier gas are prone to occur, resulting in large detection errors

Therefore, it cannot completely replace laboratory oil sample testing

[0005] (2) The cost of state awareness is high

[0006] (3) Monitoring data is difficult to use effectively

Due to the discrete installation of monitoring devices, the different sampling timeliness and communication methods of monitoring devices, the data of different monitoring devices of the same transformer often lack correlation, and it is impossible to do correlation mining and comprehensive analysis, and it is difficult to describe the real situation before a transformer failure. state

[0007] (4) The compatibility of energy harvesting and communication functions of online monitoring sensors is poor. Most of them only use one energy harvesting and communication method, which has poor compatibility. When energy harvesting and communication failures occur, they cannot be flexibly converted, which affects the reliability of the sensor.

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