32results about How to "Realize live detection" patented technology

The invention discloses an open type isolation switch open / close state detection method and device; the method comprises the following steps: building an open type isolation switch finite element simulation model; calibrating and verifying the finite element simulation model; respectively selecting at least one most sensitive mechanical oscillation signal change point on the surface of an open type isolation switch support, an operating mechanism and a transmission system as the vibration measuring point positions; obtaining the corresponding relations between typical machinery faults and vibration signals; carrying out field vibration detection for the open type isolation switch with an unknown machinery state on the vibration measuring point positions of the open type isolation switch support, the operating mechanism and the transmission system, and estimating the corresponding machinery states according to a fault diagnosis classifier. The method and device can accurately detect the open type isolation switch open / close state without changing the structure, are high in safety and reliability, thus satisfying the field operation maintenance needs.

The invention relates to an insulator detection robot, which includes: a control device, a wireless communication device and an insulator detection device, the control device includes a main control chip and a drive device connected to the main control chip; the wireless communication device and the insulator detection device are respectively connected with the main control chip; the top and bottom ends of the control device are respectively provided with sliding guide rails, and the sliding guide rails are provided with sliding blocks; the sliding blocks are provided with steering bearings, and the steering The power input end of the bearing is connected with the driving device, and the power output end of the steering bearing is connected with a hook-shaped motion measuring arm. The present invention realizes the wireless control of the insulator detection robot of the present invention through the wireless communication between the remote control terminal and the insulator detection robot, and further realizes the control of the insulator detection robot to perform electrification detection on the insulators in the overhead transmission line.

The invention relates to a high-voltage short-cable insulation terminal partial discharge testing device. One end of each cable is connected to the upper end of each protective layer protector. A power resistor is connected to the middle portion of each cable in series. The other end of each cable is connected with a grounding end of each protective layer protector and a direct grounding point of one end of each electric cable. A high-frequency current sensor is sleeved at intervals on the cable between the grounding end of each protective layer protector and each power resistor. An output end of the high-frequency current sensor is connected with partial discharge measuring equipment. The upper ends of the protective layer protectors of an insulation terminal and the grounding points are connected through the cables, output of the high-frequency current sensor is collected to complete partial discharge live detection of the insulation terminal, under the premise that normal operation of a circuit is guaranteed, live detection in which the protective layer protector is connected to the ground to detect electric cable terminal partial discharge is achieved, a testing process is quick, and convenience is achieved.

The invention discloses a circuit breaker switching on / off coil turn-to-turn short-circuiting fault detection method and belongs to the electric power equipment detection technical field and electric power equipment application technical field. The method includes the following steps of: 1, tested coil design: two taps of the outgoing line of a tested coil are adjusted so that the length of the two taps can be inconsistent; 2, fault detection and signal acquisition: a double-ended pulse method is adopted to detect the tested coil, so that waveform signals can be obtained; and 3, fault analysis: noise reduction is carried out on the waveform signals obtained at the two taps respectively in the step 2, and subtraction is carried out on the waveform signals which are obtained from the two taps respectively and have been subjected to noise reduction, so that fault characteristic waveforms can be obtained, and the fault characteristic waveforms are analyzed through the following manners: when the subtracted fault characteristic waveforms are a straight line, a turn-to-turn short-circuiting fault does not occur, and when the subtracted fault characteristic waveforms have non-zero protruding regions, a turn-to-turn short-circuiting fault occurs. The circuit breaker switching on / off coil turn-to-turn short-circuiting fault detection method of the invention has the advantages of high sensitivity, portable equipment, simple analysis and operation, intuitive judgment and high reliability, and is more suitable for on-site application.

The invention discloses a method and a system for judging the deformation of a transformer winding. The method comprises the steps: acquiring a vibration acceleration signal of a to-be-detected transformer; extracting independent characteristic parameters according to the vibration acceleration signal of the to-be-detected transformer; inputting the independent characteristic parameters into a trained machine learning model to obtain a current winding deformation state of the to-be-detected transformer, wherein the machine learning model is trained to include a mapping relationship between theindependent feature parameters and the winding deformation state. The system includes a computer device programmed to execute the above method. The method and system can effectively detect the deformation state of the transformer winding under the condition that the transformer is not stopped, and have the advantages that the system does not make contact with an electrified device and can achievethe live-line detection, and the test is convenient and efficient.