Integrated switch cabinet partial discharge intelligent sensor and information fusion state evaluation method thereof

Abstract

The invention discloses an integrated switch cabinet partial discharge intelligent sensor, which comprises a signal acquisition module, a conditioning module, a signal generation module, an MCU module, a communication module and a power supply module which are integrated together, and is characterized in that the partial discharge intelligent sensor is magnetically attracted on the outer surface of a switch cabinet; the signal acquisition module is composed of an ultrasonic sensor, a ground wave sensor and a temperature sensor. According to the invention, acquisition, signal processing, communication and power supply are integrated into a physical structure, the intelligent sensor has a sensor self-diagnosis function, and realizes intellectualization, miniaturization, integration and passivity of the sensor. The invention further discloses an information fusion state evaluation method of the integrated switch cabinet partial discharge intelligent sensor, a comprehensive state evaluation system of the switch cabinet is established, test results of ultrasonic waves, ground electric waves and cabinet body temperature are fused, and the operation state of the switch cabinet is judged.

Description

technical field [0001] The invention relates to an integrated switch cabinet partial discharge intelligent sensor and an information fusion state evaluation method thereof, belonging to the technical field of switch cabinet detection. Background technique [0002] The switchgear is an important component unit in the power grid system, which plays a dual role in controlling and protecting electrical equipment. In the long-term operation, the insulation failure of the switchgear has brought hidden dangers to the reliable operation of the power grid. The direct harm is the damage to the lines and equipment controlled and protected by the switchgear, and the loss of power; the indirect harm is to cause large-scale power outages for users. It will cause huge economic losses, so it is necessary to pay close attention to the insulation status of the switchgear. [0003] The most common faults of switchgear are partial discharge and overheating. Partial discharge detection can effe...

AI Technical Summary

Problems solved by technology

[0004] Sensor technology is evolving in the direction of intelligence, miniaturization, integration and passiveization. The current switchgear partial discharge sensor has a single function, which is mainly responsible for the collection of state quantity information, and does not have the ability of data analysis and state evaluation; the detection technology is single, In the joint detection of multiple methods, it is necessary to replace multiple sensors, which increases the workload of the detection personnel and makes the work process cumbersome and complicated; the comprehensive evaluation system of multi-source data fusion analysis is not perfect, and the correlation of each state quantity is ignored, and the information fusion Poor performance, can not truly reflect the state of the switchgear; detection reliability is not high, the sensor lacks self-diagnosis function, can not ensure the accuracy of the detection data; cable connection, increasing the difficulty of testing

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