GIS basin-type insulator particle motion device based on photon counting measurement

Abstract

The utility model relates to the technical field of extra-high voltage direct current transmission equipment, in particular to a GIS basin-type insulator particle motion device based on photon counting measurement, which comprises a power supply unit, a partial discharge-free transformer, a measuring unit, a recording unit, a counting unit and a data acquisition control unit, the power supply unit is used for providing excitation voltage of an initial DC / AC excitation volt level, and is connected with the non-partial-discharge transformer to amplify the excitation voltage and then is connected with the measurement unit. The measuring unit is used for measuring a GIS basin-type insulator sample to be measured; the recording unit is used for recording the movement process of the to-be-tested GIS basin-type insulator sample particles in a time period from a static state to a movement starting state; the device is simple in structure and convenient to use, is not affected by electromagnetic noise and vibration noise during traditional partial discharge measurement in use, is higher in particle detection sensitivity compared with a traditional partial discharge detection device, and can realize online detection of GIS basin-type insulator particle motion.

Description

Technical Field

[0001] The utility model relates to the technical field of UHV DC transmission equipment, in particular to the movement of particles in a GIS pot insulator based on photon counting measurement. Background Technique

[0002] With the large-scale operation of ultra / extra-high voltage switchgear, the insulating pot plays a crucial role in ultra / extra-high voltage. However, during the daily operation and maintenance of the insulating pot, defects such as metal particles are inevitably generated. These metal particles move inside the pot under the action of high electric field strength, hitting the surface of the pot and the high-voltage conductor, resulting in the continuous deterioration of the insulation performance of the pot over a long period of time. Eventually, the insulating pot will flash over or break down, causing serious losses. Therefore, there is an urgent need to propose a method for detecting the movement of particles in a GIS pot insulator. Content of the Utility Model

[0003] The utility model provides a movement of particles in a GIS pot insulator based on photon counting measurement, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the problem that the detection result of the movement of particles in a GIS pot insulator is low due to the influence of electromagnetic noise and vibration noise on the traditional partial discharge measurement device.

[0004] To solve the above problems, a movement device of particles in a GIS pot insulator based on photon counting measurement according to the utility model includes a power supply unit, a partial discharge-free transformer, a measurement unit, a recording unit, a sensing unit, a counting unit, and a data acquisition and control unit;

[0005] The power supply unit is used to provide an excitation voltage at the initial DC / AC excitation voltage level of volts, connect to the partial discharge-free transformer to amplify the excitation voltage and then connect to the measurement unit;

[0006] The measurement unit is used to measure the GIS pot insulator specimen to be tested;

[0007] The recording unit is placed beside the measurement unit and is used to record the movement process of the particles in the GIS pot insulator specimen to be tested during the period from rest to the start of movement;

[0008] The sensing unit is used to measure the electromagnetic waves generated by the partial discharge of different particles in the GIS pot insulator specimen to be tested and output an electromagnetic wave signal;

[0009] The counting unit is used to detect and analyze the light pulses output during the electroluminescence stage of the specimen under voltage excitation and output photon counting information to the data acquisition and control unit;

[0010] The data acquisition and control unit is used to receive the photon counting information output by the counting unit, the electromagnetic wave signal output by the sensing unit, and the power signal output by the power supply unit, and perform storage and display.

[0011] The above counting unit includes a photon counting probe and a photon counting card;

[0012] The photon counting probe is used to detect the optical pulses output during the electroluminescence stage of the specimen under voltage excitation;

[0013] The photon counting card is used to connect with the photon counting probe, analyze the number of output pulses of the Guangxi technology probe within a given integration time period, and output the photon counting information to the data acquisition card.

[0014] The above data acquisition control unit includes a control unit and a data acquisition unit. The data acquisition unit is respectively connected to the control unit, the counting unit, the sensing unit, and the power supply unit.

[0015] The above recording unit is a camera.

[0016] The utility model has a simple structure and is convenient to use. By setting up a power supply unit, a non-partial discharge transformer, a measurement unit, a recording unit, a sensing unit, a counting unit, and a data acquisition control unit to cooperate with each other, it can realize the on-line detection of the movement of particles on the GIS basin insulator. The use is not affected by electromagnetic noise and vibration noise during traditional partial discharge measurement. Compared with traditional partial discharge detection devices, this device has higher sensitivity to particle detection. Description of the Drawings

[0017] The following further details the specific embodiments of the utility model with reference to the drawings.

[0018] Figure 1 It is the circuit structure block diagram of Embodiment 1 of the utility model. Specific Embodiments

[0019] The utility model is not limited by the following embodiments, and the specific embodiments can be determined according to the technical solutions of the utility model and the actual situation.

[0020] The following further describes the utility model with reference to the embodiments and the drawings:

[0021] Embodiment 1: As Figure 1 shown, a GIS basin insulator particle movement device based on photon counting measurement, characterized in that it includes a power supply unit, a non-partial discharge transformer, a measurement unit, a recording unit, a sensing unit, a counting unit, and a data acquisition control unit;

[0022] The power supply unit is used to provide an excitation voltage at the initial DC / AC excitation volt level, connect with the non-partial discharge transformer, amplify the excitation voltage, and then connect with the measurement unit;

[0023] The measurement unit is used to measure the GIS basin insulator specimen to be tested;

[0024] The recording unit is placed beside the measuring unit and is used to record the movement process of the particles of the GIS basin insulator specimen to be measured during the period from rest to the start of movement.

[0025] The sensing unit is used to measure the electromagnetic waves generated by partial discharges of different particles of the GIS basin insulator specimen to be measured and output electromagnetic wave signals.

[0026] The counting unit is used to detect and analyze the light pulses output during the electroluminescence stage of the specimen under voltage excitation and output photon counting information to the data acquisition and control unit.

[0027] The data acquisition and control unit is used to receive the photon counting information output by the counting unit, the electromagnetic wave signals output by the sensing unit, and the power supply signals output by the power supply unit, and perform storage and display.

[0028] The above-mentioned power supply unit can be a known voltage module in the art, and the output voltage can be 220V, which is used to supply power to the entire device; the measuring unit can be a known measuring electrode in the art. By placing the GIS basin insulator specimen to be measured between the measuring electrodes and providing a stepped excitation voltage to the measuring electrodes through the power supply unit, it is convenient to measure the particle movement of the GIS basin insulator specimen to be measured under different excitation voltage conditions, and realize the on-line detection of the particle movement of the GIS basin insulator.

[0029] The above-mentioned sensing unit can be a known UHF sensor in the art, which is used to detect the electromagnetic waves generated by partial discharges of the specimen particles by the measuring unit and output the electromagnetic wave signals to the data acquisition and control unit.

[0030] Among them, the counting unit includes a photon counting probe and a photon counting card;

[0031] The photon counting probe is used to detect the light pulses output during the electroluminescence stage of the specimen under voltage excitation.

[0032] The photon counting card is used to connect with the photon counting probe, analyze the number of pulses output by the Guangxi technology probe within a given integration time period, and output the photon counting information to the data acquisition card.

[0033] Among them, the data acquisition and control unit includes a control unit and a data acquisition unit. The data acquisition unit is respectively connected to the control unit, the counting unit, the sensing unit, and the power supply unit. The above-mentioned control unit can be a known computer in the art, and the data acquisition unit can be a known PicoScope 2000 Series data acquisition card in the art, which is used for photon counting information, power supply information, and electromagnetic information, and outputs them to the control unit, and the control unit performs data storage and display for the convenience of the staff to view.

[0034] Among them, the recording unit is a camera. As needed, two observation windows can be opened on the experimental chamber of the measuring electrode, which are located in the front and side respectively. The camera is located at the side observation window and is used to observe the movement of the particles. When a stepped voltage is applied to the measuring electrode, as the voltage increases, the camera records the process of the particles starting to move from rest. According to the time points of the recorded movement process, the voltage output by the power supply unit at the corresponding time points is checked to determine the voltage when the particles move; the photon counting probe is located at the front observation window, which can better observe the light emission of the defective sample and is used to monitor the light pulses output during the electroluminescence stage of the specimen under voltage excitation.

[0035] Embodiment 2: Prepare basin samples with different particles and repeat the measurement in the same environment. Among them, the measurement includes the following steps:

[0036] The first step is the preliminary experiment. A stepped voltage is applied to the measuring unit through the power supply unit, and the recording unit is used to observe the movement process of the particles. According to the time during the movement process, the lifting voltage corresponding to the particles at this time point is determined.

[0037] The second step is the formal experiment. The recording unit is turned off, and the electroluminescence of the particles is measured using the photon counting probe in a darkroom environment. Combining the lifting voltage recorded in the previous step, the occurrence of particle movement can be accurately observed according to the measured photon counting information.

[0038] In summary, the utility model has a simple structure and is convenient to use. Its use is not affected by electromagnetic noise and vibration noise during traditional partial discharge measurement. Compared with traditional partial discharge detection devices, this device has higher sensitivity for particle detection and can realize on-line detection of particle movement in GIS basin insulators.

Claims

1. A GIS pot insulator particle motion device based on photon counting measurement, characterized in that It includes a power supply unit, a partial discharge-free transformer, a measurement unit, a recording unit, a sensing unit, a counting unit, and a data acquisition and control unit; The power supply unit is used to provide an excitation voltage at the initial DC / AC excitation voltage level of volts. It is connected to the partial discharge-free transformer to amplify the excitation voltage and then connected to the measurement unit; The measurement unit is used to measure the GIS basin insulator specimen to be tested; The recording unit is placed beside the measurement unit and is used to record the movement process of the particles of the GIS basin insulator specimen to be tested during the period from rest to the start of movement; The sensing unit is used to measure the electromagnetic waves generated by the partial discharges of different particles of the GIS basin insulator specimen to be tested and output electromagnetic wave signals; The counting unit is used to detect and analyze the light pulses output during the electro-luminescence stage of the specimen under voltage excitation and output photon counting information to the data acquisition and control unit; The data acquisition and control unit is used to receive the photon counting information output by the counting unit, the electromagnetic wave signals output by the sensing unit, and the power signals output by the power supply unit for storage and display.

2. The GIS pot insulator particle motion device based on photon counting measurement according to claim 1, wherein The counting unit includes a photon counting probe and a photon counting card; The photon counting probe is used to detect the light pulses output during the electro-luminescence stage of the specimen under voltage excitation; The photon counting card is used to connect to the photon counting probe, analyze the number of pulses output by the Guangxi technology probe within a given integration time period, and output the photon counting information to the data acquisition card.

3. The GIS pot insulator particle motion device based on photon counting measurement according to claim 1 or 2, characterized in that, The data acquisition and control unit includes a control unit and a data acquisition unit. The data acquisition unit is respectively connected to the control unit, the counting unit, the sensing unit, and the power supply unit.

4. The GIS pot insulator particle motion device based on photon counting measurement according to claim 1 or 2, characterized in that, The recording unit is a camera.

5. The GIS pot insulator particle motion device based on photon counting measurement according to claim 3, wherein, The recording unit is a camera.

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