Equipment corona discharge on-line monitoring system and monitoring method thereof

Abstract

The invention provided an equipment corona discharge on-line monitoring system. The system comprises a solar blind ultraviolet light sensing module, a conditioning module, a digital-to-analog conversion module, a data receiving module, a data preprocessing module, a characteristic value operation module, a monitoring early warning module, a data transmission module and a big data visualization platform. The solar blind ultraviolet light sensing module is in signal connection with the conditioning module, and the conditioning module is in signal connection with the digital-to-analog conversionmodule; the data receiving module is in communication connection with the digital-to-analog conversion module and the data preprocessing module; the characteristic value operation module is in communication connection with the data preprocessing module and the monitoring and early warning module; and the data transmission module is in communication connection with the monitoring and early warningmodule and the big data visualization platform. The invention further provides an equipment corona discharge on-line monitoring method. According to the invention, the safety, economy and availabilityof a power grid insulator are improved, the condition-based maintenance based on state evaluation and fault prediction is realized, the maintenance investment is reduced, the use and maintenance costs are reduced, and the popularization and use are facilitated.

Description

technical field [0001] The invention relates to the technical field of corona discharge monitoring, in particular to an on-line corona discharge monitoring system for equipment and a monitoring method thereof. Background technique [0002] Due to the deterioration of the environment, weather damage, and long-term exposure of the insulation equipment of power transmission and transformation equipment to various complex environments, the damage to the insulation layer is becoming more and more serious. When the partial voltage of the insulator exceeds the critical voltage, the air will be dissociated and produce corona. Discharge, causing large and small accidents and causing huge losses, is one of the sources of major safety hazards in the power system; insulation accidents usually originate from the corona formed by partial discharge, and then gradually become stronger, eventually leading to accidents; [0003] From the current situation of insulator operation and maintenanc...

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Problems solved by technology

[0003] From the current situation of insulator operation and maintenance, the current detection methods include visual inspection, telescope, discharge sound, insulation resistance, salt adhesion measurement and other methods, but all have certain limitations; visual inspection and telescope methods are comprehensive but have a large business volume and no focus , It is difficult to determine the planned inspection cycle, the professional quality of personnel is uneven, the criterion is difficult to quantify, and the quality of inspection is difficult to control; the discharge sound method is too random and the operability is poor; the insulation resistance and salt adhesion measurement method is comprehensive. However, the business volume is large, and power outage operation is required; other mechanical damage is difficult to observe, the test method requires power outage operation, and the test time is long, which are the limitations of the current method; the disadvantages of maintenance and repair are also non-targeted regular cleaning and power outage operations; antifouling The workload of coating failure detection is heavy, and the failure standard is difficult to formulate; the failure of insulators is difficult to detect, the business volume is large, and the basis for replacement is difficult to determine;

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