The invention discloses a high-frequency magnetic probe diagnosis system for measuring radio frequency wave characteristics. The measuring system comprises a vacuum coaxial electrode, a high-frequencymagnetic probe, a power divider, a detector, a phase discriminator and a signal acquisition system, the vacuum coaxial electrode is used for transmitting radio frequency signals from the Tokamak to the outside of the Tokamak; the high-frequency magnetic probe is used for coupling the radio-frequency signals; the power divider is used for distributing the voltage probe and current probe signals into two paths with equal amplitude and equal phase; the detector is used for detecting the peak-to-peak value of the voltage probe and current probe radio frequency signals, and the result is output bya direct-current signal; the phase discriminator detects the phase difference between the voltage probe and current probe signals, and the result is output by a direct-current signal. The signal acquisition system stores the collected voltage signals to a computer.

High-frequency magnetic probe diagnosis system for measuring radio frequency wave characteristics

The invention discloses a program-controlled transformer oil gas mixing and oil filtering system and a working method thereof, and relates to an oil liquid detecting system and a working method thereof. At present, a transformer oil chromatography detection method is quite complex, needs manpower for gas mixing and the measurement of mixed standard gas can not be realized; and the used gas can only be disposed, which causes resource waste and also results in environmental pollution. The system comprises a chromatographic instrument, a temperature control device, an oil filter, a standard gas bottle, a plurality of gas mixing oil tanks and a controller, wherein a temperature sensor and a pressure sensor are arranged in each gas mixing oil tank, and a gas valve is arranged on each gas mixing oil tank; the standard gas bottle is connected to the gas mixing oil tanks by virtue of flow meters; the oil filter is connected to the gas mixing oil tank by virtue of first oil valves; an input and output device is arranged on the controller; and the gas mixing oil tanks are connected to the chromatographic instrument. The technical scheme disclosed by the invention is convenient to analyze and is free from manual operation; and the used oil liquid can be recycled after being filtered by the oil filter, so that environmental pollution is relieved.

Program-controlled transformer oil gas mixing and oil filtering system and working method thereof

A method and system for condition monitoring electrical equipment includes detecting partial discharge impulses generated in the electrical equipment for at least one power cycle (410); obtaining first data representing the detected partial discharge impulses for the at least one power cycle (420); obtaining second data by phase-resolving the first data (430); obtaining third data by regularizing the second data (440); analyzing the third data into a first component and at least one second component (450); obtaining phase information of the first component (460); shifting the first component and the at least one second component in consideration of the obtained phase information (470); and generating a signal indicating a health state of the electrical equipment by comparing the shifted first and second components of the third data with their counterparts associated with an unhealthy electrical equipment (480).

Method and system for condition monitoring electrical equipment

The invention discloses a signal regulation and protection device for a partial discharge ultra-high-frequency sensor. The device includes an induced voltage protection module, a radio frequency module, an overvoltage pulse absorption module, a first capacitor, and a radio frequency interference suppression module. The induced voltage protection module removes induced voltage to guarantee the safety of backend personnel and an acquisition device. The overvoltage pulse absorption module reduces the high-voltage pulse signals of a partial discharge ultra-high-frequency sensor. The radio frequency interference suppression module suppresses the signal noise of the partial discharge ultra-high-frequency sensor, conditions and protects the whole circuit, makes the circuit no longer affected by noise, and greatly reduces the safety risks.

Signal regulation and protection device and method for partial discharge ultra-high-frequency sensor

The invention discloses a power transformer equipment state dynamic monitoring system. The system comprises an automatic dynamic calibration unit, an oil circulation mechanism, an oil gas separation unit, a gas detection unit and a multistage temperature automatic adjustment unit. The automatic dynamic calibration unit is connected with the gas detection unit for performing automatic and dynamic calibration on detection; the oil circulation mechanism controls monitored oil to perform circulating flow and sending the oil to the oil gas separation unit; the oil gas separation unit performs degassing on gas in the oil and sending the gas to the gas detection unit for gas component detection; and the multistage temperature automatic adjustment unit controls the temperature of the monitored oil. The system provided by the invention can continuously and accurately monitor hydrogen, carbon monoxide, methane, acetylene, ethane, ethane, carbon dioxide, oxygen and nitrogen. By installing the system on a transformer to be supervised, it can be ensured that potential defects are discovered at an early stage, and accordingly, unplanned outage and accident dangers are reduced.

Power transformer equipment state dynamic monitoring system

The invention relates to an ultrahigh-frequency partial discharge active noise tracking and suppression measurement system and a working method thereof, in particular, an acquisition system of partial discharge ultrahigh-frequency signals and a working method of the acquisition system At present, partial discharge ultrahigh-frequency signal acquisition cannot both have monitoring sensitivity and anti-interference ability According to the technical scheme of the invention, the ultrahigh-frequency partial discharge active noise tracking and suppression measurement system includes a probe, a radio frequency power splitter of which the input end is connected with the output end of the probe, a detection circuit and a frequency mixing circuit of which the input ends are connected with the output ends of the radio frequency power splitter, an analog-to-digital conversion circuit of which the input ends are connected with the output ends of the detection circuit and the frequency mixing circuit, a processor connected with the analog-to-digital conversion circuit, and an input and output device which is connected with the processor, wherein the analog-to-digital conversion circuit is provided with a dual-path AD sampling chip so as to perform analog-to-digital conversion on the signals of the wave detection circuit and the frequency mixing circuit According to the ultrahigh-frequency partial discharge active noise tracking and suppression measurement system provided by the technical schemes of the invention, broadband detection monitoring and narrowband mixed frequency monitoring are combined together; a local oscillator and a frequency mixer are adopted to actively track interference signals and suppress the interference signals, and therefore, a contradiction between sensitivity and anti-interference ability can be alleviated

Ultrahigh-frequency partial discharge active noise tracking and suppression measurement system and working method thereof

The utility model provides a gas mixing and oil filtering system for programmable transformer oil, and relates to an oil detection system. Currently, chromatographic detection for transformer oil is very complicated, manual gas mixing is needed, the measurement of mixed standard gas cannot be determined, the used oil needs to be drained, resources are wasted, and the environment is polluted. The system comprises a chromatographic instrument, a temperature-control device, an oil filter, a standard gas cylinder, a plurality of gas-mixing oil tanks and a controller, wherein a temperature sensor and a pressure sensor are arranged in each gas-mixing oil tank; a gas valve is arranged on each gas-mixing oil tank; the standard gas cylinder is connected with the gas-mixing oil tanks by virtue of a flow meter; the oil filter is connected with the gas-mixing oil tanks by virtue of a first oil valve; the controller is provided with an input/output device; and the gas-mixing oil tanks are connected with the chromatographic instrument. The technical scheme is convenient to analyze, and does not need manual operation; the used oil can be recycled after being filtered by the oil filter, and thus the environmental pollution can be reduced.

Gas mixing and oil filtering system for programmable transformer oil

The utility model discloses a signal conditioning protection device of partial discharge superfrequency sensor, the device includes: module, first electric capacity, radio frequency interference inhibiting module are absorbed in induced voltage protective film piece, radio frequency module, excessive pressure pulse. Get rid of induced voltage through the induced voltage protective film piece, ensure rear end personnel and collection system's safety, absorb the fast effectual high -voltage pulse signal who reduces partial discharge superfrequency sensor of mould through pressing the pulse, useradio frequency interference to restrain the fast effectual noise that has restrained the signal of partial discharge superfrequency sensor of mould, played the effect of taking care of and protectingto whole circuit, make its potential safety hazard that has no longer received noise and very big reduction.

Xie Wei

Papers

Ultrahigh-frequency partial discharge active noise tracking and suppression measurement system and working method thereof

Program-controlled transformer oil gas mixing and oil filtering system and working method thereof

Gas mixing and oil filtering system for programmable transformer oil

Signal conditioning protection device of partial discharge superfrequency sensor

Signal regulation and protection device and method for partial discharge ultra-high-frequency sensor