5 results about "Partial discharge analysis" patented technology

The application discloses a kind of reactor special electrical equipment online monitoring method and system, it is related to monitoring system technical field, including obtaining temperature data, partial discharge data and pressure data generated when electrical penetration equipment operates;According to the data generated when operating, process and obtain corresponding temperature distribution chart, partial discharge trend chart, PRPD spectrum chart, PRPS spectrum chart and pressure change trend chart;Build the multi-modal fusion fault diagnosis algorithm including feature extraction module, temperature analysis module, pressure analysis module, partial discharge analysis module and comprehensive evaluation module;Temperature distribution chart, partial discharge trend chart, PRPD spectrum chart, PRPS spectrum chart and pressure change trend chart are analyzed using multi-modal fusion fault diagnosis algorithm, obtain the fault condition of electrical penetration equipment;For solving the problem that traditional monitoring function is single, and the accuracy of state diagnosis result is low.

The application discloses a full-band GIS ultrahigh frequency partial discharge pulse non-loss collection system and belongs to the technical field of intelligent sensing of primary equipment. The system comprises a signal collection and conditioning module, a double-channel high-speed ADC module and a high-speed data processing and storage module. The signal collection and conditioning module is used for connecting an ultrahigh frequency sensor signal and performing filtering and amplification preprocessing on the signal. The double-channel high-speed ADC module comprises two independent and synchronous collection channels and is used for synchronously collecting the preprocessed signal in a full band. The high-speed data processing and storage module is used for controlling the alternate collection of the double channels, real-time linear compensation, trigger timing control and real-time signal processing. The intelligent analysis and control module is used for performing real-time analysis and fault diagnosis on the collected data and dynamically adjusting system parameters. The application adopts a double high-speed channel collection single signal and realizes a cooperative working mechanism of mutual backup, effectively avoids pulse loss caused by system processing delay, and improves the accuracy of partial discharge analysis and the intelligent level of equipment state sensing.

The application provides a power distribution automation equipment supervision acquisition system, which comprises the following steps: time synchronization and space registration are realized by adopting a space-time alignment algorithm on infrared signals, vibration signals and electrical signals; thermal imaging analysis is performed on the infrared signals after synchronization and registration, an overheated area is automatically framed and selected, and a temperature gradient is calculated; vibration signal analysis is performed on the vibration signals after synchronization and registration, vibration entropy is calculated; partial discharge analysis is performed on the electrical signals, and the number of discharge pulses is obtained; the temperature gradient, the vibration entropy and the number of discharge pulses are weighted and fused, the fused features are input into an LSTM model for time sequence correlation analysis, the fault type and the fault type probability are obtained, and the 750KV substation is warned according to the fault type probability. The application provides an automation equipment supervision acquisition system for the 750KV substation, and has the advantages of low missed detection rate and high accuracy.

The application discloses a cable GIS terminal insulation-vibration detection experiment device and application thereof, which comprises a power supply system, an experiment loop system, a vibration detection system and a partial discharge detection system.The experiment loop system is used for constructing a real operation scene of the cable GIS terminal and presetting various defects, and comprises a GIS cabin body, a cable GIS terminal and a support for supporting and fixing the GIS cabin body and the cable.The vibration detection system comprises a plurality of vibration sensors arranged on the experiment loop system, a multichannel data collector connected with the vibration sensors and an analysis system connected with the multichannel data collector.The partial discharge detection system is used for collecting partial discharge signals of the experiment loop system during operation, and comprises a signal coupler, a partial discharge analysis device and an independent power supply.The analysis system is in communication connection with the partial discharge analysis device, and is configured to receive synchronous vibration signals and partial discharge signals for joint analysis.The application realizes non-invasive identification of latent insulation hidden dangers and pure mechanical defects.

The invention discloses a cable GIS terminal insulation-vibration detection experiment device and application thereof. The cable GIS terminal insulation-vibration detection experiment device comprises a power supply system; the experiment loop system is used for constructing a real operation scene of the cable GIS terminal and presetting various defects, and comprises a GIS cabin body, the cable GIS terminal and a bracket for supporting and fixing the GIS cabin body and a cable; the vibration detection system comprises a plurality of vibration sensors arranged on the experiment loop system, a multi-channel data collector connected with the vibration sensors, and an analysis system connected with the multi-channel data collector; the partial discharge detection system is used for collecting partial discharge signals of the experimental loop system during operation and comprises a signal coupler, a partial discharge analysis device and an independent power supply; and the analysis system is in communication connection with the partial discharge analysis device and is configured to receive the synchronous vibration signal and the partial discharge signal so as to perform conjoint analysis. According to the invention, non-intrusive identification of potential insulation hazards and pure mechanical defects in the incubation period is realized.