CN209296901U - An evaluation device for UHF partial discharge instrument - Google Patents
An evaluation device for UHF partial discharge instrument Download PDFInfo
- Publication number
- CN209296901U CN209296901U CN201821882045.6U CN201821882045U CN209296901U CN 209296901 U CN209296901 U CN 209296901U CN 201821882045 U CN201821882045 U CN 201821882045U CN 209296901 U CN209296901 U CN 209296901U
- Authority
- CN
- China
- Prior art keywords
- partial discharge
- tested
- radio
- signal generator
- instrument
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
本实用新型涉及一种特高频局放仪的测评装置，属于电力设备局部放电检测技术领域。本实用新型包括计算机、射频信号发生器、高清数字示波器、射频天线、被测局放仪、被测局放仪传感器；计算机通过串口线连接到射频信号发生器的输入端，射频信号发生器的一个输出端通过同轴电缆连接到高清数字示波器的通道，另一输出端连接到设计好的射频天线，同时射频天线无缝对接放置被测局放仪传感器，这两者通过支架放置，做到无缝对接，被测局放仪传感器通过电缆线连接到被测局放仪的端口。本实用新型本实用新型能对特高频局放仪进行快速的脉冲数指标、灵敏度指标的测评，进而评估特高频局放仪的性能。
The utility model relates to an evaluation device of a UHF partial discharge instrument, which belongs to the technical field of partial discharge detection of electric power equipment. The utility model comprises a computer, a radio frequency signal generator, a high-definition digital oscilloscope, a radio frequency antenna, a measured partial discharge instrument, and a measured partial discharge instrument sensor; the computer is connected to the input end of the radio frequency signal generator through a serial line, and the radio frequency signal generator One output end is connected to the channel of the high-definition digital oscilloscope through a coaxial cable, and the other output end is connected to the designed RF antenna. At the same time, the RF antenna is seamlessly connected to the sensor of the PD instrument under test. Seamless docking, the sensor of the tested partial discharge instrument is connected to the port of the tested partial discharge instrument through a cable. The utility model The utility model can quickly evaluate the pulse number index and the sensitivity index of the UHF partial discharge instrument, and then evaluate the performance of the UHF partial discharge instrument.
Description
技术领域technical field
本实用新型涉及一种特高频局放仪的测评装置，属于电力设备局部放电检测技术领域。The utility model relates to an evaluation device of a UHF partial discharge instrument, which belongs to the technical field of partial discharge detection of electric power equipment.
背景技术Background technique
局部放电检测是一种电力设备绝缘诊断的重要手段，能够有效的检测出设备的早期故障，为有效地采取预防措施提供了依据。Partial discharge detection is an important means of insulation diagnosis of power equipment, which can effectively detect early faults of equipment and provide a basis for effective preventive measures.
目前局部放电检测方法有很多，有脉冲电流法、超声波、TEV、特高频法等。特高频检测的原理是通过特高频传感器对电力设备中局部放电时产生的特高频信号进行检测，从而获得局部放电的相关信息，实现局部放电检测。由于特高频的频率范围很高，因此多适用于传感器内置来实现实时监测，同时特高频传感器的灵敏度等指标满足要求，即可检测出细微的局放，从而对局放仪的特性进行评估。At present, there are many partial discharge detection methods, such as pulse current method, ultrasonic, TEV, UHF method and so on. The principle of UHF detection is to use UHF sensors to detect UHF signals generated during partial discharge in power equipment, so as to obtain relevant information about partial discharge and realize partial discharge detection. Due to the high frequency range of UHF, it is mostly suitable for built-in sensors to realize real-time monitoring. At the same time, the sensitivity and other indicators of UHF sensors can meet the requirements, so that subtle partial discharges can be detected, so as to analyze the characteristics of the partial discharge instrument. Evaluate.
目前国家相关电力行业对特高频局部放电检测装置没有标准化、统一的测评装置和方法，影响了大批局放仪的定期测评，造成了仪器检测结果不准确可靠，现场测试易引发严重后果。因此对特高频局放仪的便捷测评装置和方法的研究具有现实指导价值。At present, the relevant national power industry does not have a standardized and unified evaluation device and method for UHF partial discharge detection devices, which affects the regular evaluation of a large number of partial discharge instruments, resulting in inaccurate and reliable instrument detection results, and on-site testing is likely to cause serious consequences. Therefore, the research on the convenient evaluation device and method of UHF partial discharge instrument has practical guiding value.
发明内容Contents of the invention
本实用新型针对现有技术存在的问题，提供了一种特高频局放仪的测评装置，本实用新型的测评装置可用于特高频局放仪的日常测评和评估，本实用新型能对特高频局放仪进行快速的脉冲数指标、灵敏度测评，进而评估特高频局放仪的性能。Aiming at the problems existing in the prior art, the utility model provides an evaluation device for UHF partial discharge instruments. The evaluation device of the utility model can be used for daily evaluation and evaluation of UHF partial discharge instruments. The utility model can The UHF partial discharge instrument conducts rapid pulse number index and sensitivity evaluation, and then evaluates the performance of the UHF partial discharge instrument.
本实用新型的技术方案是：一种特高频局放仪的测评装置，包括计算机、射频信号发生器、高清数字示波器、射频天线、被测局放仪、被测局放仪传感器；The technical solution of the utility model is: an evaluation device for a UHF partial discharge instrument, including a computer, a radio frequency signal generator, a high-definition digital oscilloscope, a radio frequency antenna, a tested partial discharge instrument, and a tested partial discharge instrument sensor;
所述计算机通过串口线连接到射频信号发生器的输入端，射频信号发生器的一个输出端通过同轴电缆连接到高清数字示波器的通道，另一输出端连接到设计好的射频天线，同时射频天线无缝对接放置被测局放仪传感器，这两者通过支架放置，做到无缝对接，被测局放仪传感器通过电缆线连接到被测局放仪的端口；The computer is connected to the input end of the radio frequency signal generator through a serial port line, an output end of the radio frequency signal generator is connected to the channel of the high-definition digital oscilloscope through a coaxial cable, and the other output end is connected to a designed radio frequency antenna, and the radio frequency The antenna is seamlessly docked to place the sensor of the PD instrument under test, and the two are placed through the bracket to achieve seamless docking, and the sensor of the PD instrument under test is connected to the port of the PD instrument under test through a cable;
所述射频天线，用于接收射频信号发生器产生的符合电力行业标准的方波信号；The radio frequency antenna is used to receive the square wave signal produced by the radio frequency signal generator in line with the power industry standard;
所述被测局放仪传感器，用于无缝对接射频天线，将接收的方波信号传送至被测局放仪进行测评；The measured partial discharge instrument sensor is used to seamlessly connect the radio frequency antenna, and transmit the received square wave signal to the tested partial discharge instrument for evaluation;
所述计算机，用于控制射频信号发生器产生符合电力行业的方波信号；The computer is used to control the radio frequency signal generator to generate a square wave signal that meets the requirements of the power industry;
所述射频信号发生器，用于产生符合电力行业标准的方波信号，脉宽为5~50ns，幅度为100mv~200V；The radio frequency signal generator is used to generate a square wave signal conforming to the power industry standard, the pulse width is 5~50ns, and the amplitude is 100mv~200V;
所述高清数字示波器，用于监测射频信号发生器输出的方波信号。The high-definition digital oscilloscope is used for monitoring the square wave signal output by the radio frequency signal generator.
进一步地，所述射频天线、被测局放仪传感器对接的紧密结合的支架，长度为0.2m，宽度为0.1m，高度为0.16m，紧紧包裹住贴合紧密的射频天线、被测局放仪传感器。Further, the radio frequency antenna, the tightly combined bracket that is docked with the sensor of the tested partial discharge instrument has a length of 0.2m, a width of 0.1m, and a height of 0.16m, and tightly wraps the tightly fitted radio frequency antenna, the tested station release sensor.
利用本实用新型特高频局放仪的测评装置对特高频局放仪的脉冲数指标进行测评的方法：The method for evaluating the pulse number index of the UHF partial discharge instrument by using the evaluation device of the UHF partial discharge instrument of the utility model:
（1）通过计算机控制射频信号发生器产生符合电力行业的方波信号，通过串口线连接到射频信号发生器的输入端；(1) Control the radio frequency signal generator through the computer to generate a square wave signal in line with the power industry, and connect it to the input terminal of the radio frequency signal generator through a serial port line;
（2）射频信号发生器的一个输出端用同轴低损耗电缆接至高清数字示波器的通道，同时设置示波器至合适的采集状态；另一输出端连接设计好的射频天线；(2) One output end of the RF signal generator is connected to the channel of the high-definition digital oscilloscope with a coaxial low-loss cable, and the oscilloscope is set to a suitable acquisition state at the same time; the other output end is connected to the designed RF antenna;
（3）设计好的支架上无缝对接放置被测局放仪传感器，使得射频天线和被测局放仪传感器无缝对接；(3) Place the sensor of the PD instrument under test on the designed bracket seamlessly, so that the RF antenna and the sensor of the PD instrument under test are seamlessly connected;
（4）被测局放仪传感器通过同轴电缆连接到被测特高频局放仪上；(4) The sensor of the tested partial discharge instrument is connected to the tested UHF partial discharge instrument through a coaxial cable;
（5）信号源，通过计算机控制射频信号发生器产生符合电力行业的方波信号，射频信号发生器产生的符合电力行业标准的方波信号，脉宽为5~50ns，幅度为100mv~200V，其上升沿和下降沿的时间，范围为100ps~5ns；射频天线接收射频信号发生器产生的符合电力行业标准的方波信号，无缝对接被测局放仪传感器，被测局放仪传感器将接收的方波信号传送至被测局放仪进行测评，观察被测局放仪检测到的实际波形；(5) Signal source, the computer controls the radio frequency signal generator to generate a square wave signal in line with the power industry, and the radio frequency signal generator produces a square wave signal in line with the power industry standard, with a pulse width of 5~50ns and an amplitude of 100mv~200V. The time of its rising edge and falling edge ranges from 100ps to 5ns; the RF antenna receives the square wave signal generated by the RF signal generator in line with the power industry standard, and seamlessly connects with the sensor of the PD instrument under test. The sensor of the PD instrument under test will The received square wave signal is sent to the tested partial discharge instrument for evaluation, and the actual waveform detected by the tested partial discharge instrument is observed;
（6）计算机控制射频信号发生器产生符合（5）要求的方波信号，频率从1MHz递增到80MHz，步长5MHz的方波信号；同时用高清数字示波器监测该信号，进而观测被测局放仪检测到的实际波形，通过分析被测局放仪是否能采集到该方波信号，达到测评特高频局放仪脉冲数的目的。(6) The computer controls the RF signal generator to generate a square wave signal that meets the requirements of (5), the frequency increases from 1MHz to 80MHz, and the step size is 5MHz; at the same time, use a high-definition digital oscilloscope to monitor the signal, and then observe the measured PD The actual waveform detected by the instrument, by analyzing whether the tested partial discharge instrument can collect the square wave signal, achieves the purpose of evaluating the pulse number of the UHF partial discharge instrument.
利用本实用新型特高频局放仪的测评装置对特高频局放仪的灵敏度进行测评的方法：The method for evaluating the sensitivity of the UHF partial discharge instrument by using the evaluation device of the utility model UHF partial discharge instrument:
（1）通过计算机控制射频信号发生器产生符合电力行业的方波信号，通过串口线连接到射频信号发生器的输入端；(1) Control the radio frequency signal generator through the computer to generate a square wave signal in line with the power industry, and connect it to the input terminal of the radio frequency signal generator through a serial port line;
（2）射频信号发生器的一个输出端用同轴低损耗电缆接至高清数字示波器的通道，同时设置示波器至采集状态；另一输出端连接设计好的射频天线；(2) One output end of the RF signal generator is connected to the channel of the high-definition digital oscilloscope with a coaxial low-loss cable, and the oscilloscope is set to the acquisition state at the same time; the other output end is connected to the designed RF antenna;
（3）设计好的支架上无缝对接放置被测局放仪传感器，使得射频天线和被测局放仪传感器无缝对接；(3) Place the sensor of the PD instrument under test on the designed bracket seamlessly, so that the RF antenna and the sensor of the PD instrument under test are seamlessly connected;
（4）被测局放仪传感器通过同轴电缆连接到被测特高频局放仪上；(4) The sensor of the tested partial discharge instrument is connected to the tested UHF partial discharge instrument through a coaxial cable;
（5）信号源，通过计算机控制射频信号发生器产生符合电力行业的方波信号，射频信号发生器产生的符合电力行业标准的方波信号，脉宽为5~50ns，幅度为100mv~200V，其上升沿和下降沿的时间，范围为100ps~5ns；射频天线接收射频信号发生器产生的符合电力行业标准的方波信号，无缝对接被测局放仪传感器，被测局放仪传感器将接收的方波信号传送至被测局放仪进行测评，观察被测局放仪检测到的实际波形；(5) Signal source, the computer controls the radio frequency signal generator to generate a square wave signal in line with the power industry, and the radio frequency signal generator produces a square wave signal in line with the power industry standard, with a pulse width of 5~50ns and an amplitude of 100mv~200V. The time of its rising edge and falling edge ranges from 100ps to 5ns; the RF antenna receives the square wave signal generated by the RF signal generator in line with the power industry standard, and seamlessly connects with the sensor of the PD instrument under test. The sensor of the PD instrument under test will The received square wave signal is sent to the tested partial discharge instrument for evaluation, and the actual waveform detected by the tested partial discharge instrument is observed;
（6）调节方波信号幅值2V-200V，设置信噪比大于3dB，观察被测局放仪的输出结果，分三段进行分别测试，第一段0-10V；第二段10-50V；第三段50-200V，绘制出灵敏度曲线，以此来测评该局放仪的灵敏度。(6) Adjust the square wave signal amplitude 2V-200V, set the signal-to-noise ratio greater than 3dB, observe the output results of the tested partial discharge instrument, and conduct separate tests in three sections, the first section is 0-10V; the second section is 10-50V ; In the third section of 50-200V, draw a sensitivity curve to evaluate the sensitivity of the partial discharge instrument.
本实用新型的有益效果是：The beneficial effects of the utility model are:
（1）本实用新型的测评装置可用于特高频局放仪脉冲数、灵敏度等指标的日常测评和仪器评估；(1) The evaluation device of the utility model can be used for daily evaluation and instrument evaluation of UHF partial discharge instrument pulse number, sensitivity and other indicators;
（2）在面对大规模待检特高频局放仪情况下，使用本实用新型的测评装置有助于快速便捷的查找出仪器的问题，快速决定是否需要返厂维修或送检；有助于解决目前各大供电局的局放仪年久失修，测试精度不准可靠性差的问题，具有较好的现实指导价值。(2) In the case of a large-scale UHF partial discharge instrument to be inspected, using the evaluation device of the utility model is helpful to find out the problems of the instrument quickly and conveniently, and quickly decide whether to return to the factory for repair or to send for inspection; It helps to solve the problems of disrepair, inaccurate test accuracy and poor reliability of partial discharge instruments in major power supply bureaus, and has good practical guiding value.
附图说明Description of drawings
图1为实施例特高频局放仪测评装置的结构示意图；Fig. 1 is the structural representation of the UHF partial discharge instrument evaluation device of the embodiment;
图2为实施例特高频局放仪方波的灵敏度图。Fig. 2 is a sensitivity diagram of the square wave of the UHF partial discharge instrument of the embodiment.
具体实施方式Detailed ways
实施例1：如图1-2所示，一种特高频局放仪的测评装置，包括计算机、射频信号发生器、高清数字示波器、射频天线、被测局放仪、被测局放仪传感器；Embodiment 1: As shown in Figure 1-2, an evaluation device for a UHF partial discharge instrument, including a computer, a radio frequency signal generator, a high-definition digital oscilloscope, a radio frequency antenna, a tested partial discharge instrument, and a tested partial discharge instrument sensor;
所述计算机通过串口线连接到射频信号发生器的输入端，射频信号发生器的一个输出端通过同轴电缆连接到高清数字示波器的通道，另一输出端连接到设计好的射频天线，同时射频天线无缝对接放置被测局放仪传感器，这两者通过支架放置，做到无缝对接，被测局放仪传感器通过电缆线连接到被测局放仪的端口；The computer is connected to the input end of the radio frequency signal generator through a serial port line, an output end of the radio frequency signal generator is connected to the channel of the high-definition digital oscilloscope through a coaxial cable, and the other output end is connected to a designed radio frequency antenna, and the radio frequency The antenna is seamlessly docked to place the sensor of the PD instrument under test, and the two are placed through the bracket to achieve seamless docking, and the sensor of the PD instrument under test is connected to the port of the PD instrument under test through a cable;
本实施例所述射频天线，用于接收射频信号发生器产生的符合电力行业标准的方波信号；The radio frequency antenna described in this embodiment is used to receive a square wave signal generated by a radio frequency signal generator that meets the power industry standard;
本实施例所述被测局放仪传感器，用于无缝对接射频天线，将接收的方波信号传送至被测局放仪进行测评；The sensor of the PD instrument under test described in this embodiment is used to seamlessly connect the radio frequency antenna, and transmit the received square wave signal to the PD instrument under test for evaluation;
本实施例所述计算机，用于控制射频信号发生器产生符合电力行业的方波信号；The computer described in this embodiment is used to control the radio frequency signal generator to generate a square wave signal in line with the power industry;
本实施例所述射频信号发生器，用于产生符合电力行业标准的方波信号，脉宽为5~50ns（即该范围内取端点值，端点范围内的任意值皆可），幅度为100mv~200V（即该范围内取端点值，端点范围内的任意值皆可）；The radio frequency signal generator described in this embodiment is used to generate a square wave signal conforming to the power industry standard, the pulse width is 5~50ns (that is, the endpoint value is taken within this range, any value within the endpoint range is acceptable), and the amplitude is 100mv ~200V (that is, take the endpoint value within this range, any value within the endpoint range is acceptable);
本实施例所述高清数字示波器，用于监测射频信号发生器输出的方波信号。The high-definition digital oscilloscope described in this embodiment is used to monitor the square wave signal output by the radio frequency signal generator.
本实施例所述射频天线、被测局放仪传感器对接的紧密结合的支架，长度为0.2m，宽度为0.1m，高度为0.16m，紧紧包裹住贴合紧密的射频天线、被测局放仪传感器。The radio frequency antenna described in this embodiment and the tightly combined bracket that is docked with the sensor of the measured partial discharge instrument have a length of 0.2m, a width of 0.1m, and a height of 0.16m, tightly wrapping the tightly fitted radio frequency antenna, the measured partial discharge release sensor.
利用本实施例特高频局放仪的测评装置对特高频局放仪的脉冲数指标进行测评的方法：The method for evaluating the pulse number index of the UHF partial discharge instrument by using the evaluation device of the UHF partial discharge instrument in this embodiment:
（1）通过计算机控制射频信号发生器产生符合电力行业的方波信号，通过串口线连接到射频信号发生器的输入端；(1) Control the radio frequency signal generator through the computer to generate a square wave signal in line with the power industry, and connect it to the input terminal of the radio frequency signal generator through a serial port line;
（2）射频信号发生器的一个输出端用同轴低损耗电缆接至高清数字示波器的通道，同时设置示波器至合适的采集状态；另一输出端连接设计好的射频天线；(2) One output end of the RF signal generator is connected to the channel of the high-definition digital oscilloscope with a coaxial low-loss cable, and the oscilloscope is set to a suitable acquisition state at the same time; the other output end is connected to the designed RF antenna;
（3）设计好的支架上无缝对接放置被测局放仪传感器，使得射频天线和被测局放仪传感器无缝对接；(3) Place the sensor of the PD instrument under test on the designed bracket seamlessly, so that the RF antenna and the sensor of the PD instrument under test are seamlessly connected;
（4）被测局放仪传感器通过同轴电缆连接到被测特高频局放仪上；(4) The sensor of the tested partial discharge instrument is connected to the tested UHF partial discharge instrument through a coaxial cable;
（5）信号源，通过计算机控制射频信号发生器产生符合电力行业的方波信号，射频信号发生器产生的符合电力行业标准的方波信号，脉宽为5~50ns，幅度为100mv~200V，其上升沿和下降沿的时间，范围为100ps~5ns（即该范围内取端点值，端点范围内的任意值皆可）；射频天线接收射频信号发生器产生的符合电力行业标准的方波信号，无缝对接被测局放仪传感器，被测局放仪传感器将接收的方波信号传送至被测局放仪进行测评，观察被测局放仪检测到的实际波形；(5) Signal source, the computer controls the radio frequency signal generator to generate a square wave signal in line with the power industry, and the radio frequency signal generator produces a square wave signal in line with the power industry standard, with a pulse width of 5~50ns and an amplitude of 100mv~200V. The time of its rising edge and falling edge ranges from 100ps to 5ns (that is, the endpoint value is taken within this range, and any value within the endpoint range is acceptable); the RF antenna receives the square wave signal generated by the RF signal generator that meets the power industry standard , seamlessly connected to the sensor of the tested partial discharge instrument, the sensor of the tested partial discharge instrument transmits the received square wave signal to the tested partial discharge instrument for evaluation, and observes the actual waveform detected by the tested partial discharge instrument;
（6）计算机控制射频信号发生器产生符合（5）要求的方波信号，频率从1MHz递增到80MHz，步长5MHz的方波信号；同时用高清数字示波器监测该信号，进而观测被测局放仪检测到的实际波形，实例中采用1MHz-10MHz（即该范围内取端点值，端点范围内的任意值皆可）时的方波信号，符合上升沿、下降沿时间100ps，被测局放仪系统能够检测到该方波信号；随着方波频率递增到20MHz以上，上下降沿时间1ns（在范围内即可），观测被测局放仪系统（被测局放仪的脉冲数的显示跟型号不同而显示不同）会出现些许脉冲丢失甚至接受不到对应的脉冲数的情况。进而评估该被测特高频局放仪的脉冲数性能。(6) The computer controls the RF signal generator to generate a square wave signal that meets the requirements of (5), the frequency increases from 1MHz to 80MHz, and the step size is 5MHz; at the same time, use a high-definition digital oscilloscope to monitor the signal, and then observe the measured PD The actual waveform detected by the instrument, the square wave signal at 1MHz-10MHz (that is, the endpoint value within this range, any value within the endpoint range is acceptable) is used in the example, which conforms to the rising edge and falling edge time of 100ps, and the tested partial discharge The instrument system can detect the square wave signal; as the frequency of the square wave increases to more than 20MHz, the rising and falling edge time is 1ns (within the range), observe the measured partial discharge instrument system (the number of pulses of the tested partial discharge instrument The display is different from the model) There will be some cases where pulses are lost or even the corresponding number of pulses cannot be received. Then evaluate the pulse number performance of the tested UHF partial discharge instrument.
利用本实施例特高频局放仪的测评装置对特高频局放仪的灵敏度进行测评的方法：The method for evaluating the sensitivity of the UHF partial discharge instrument by using the evaluation device of the UHF partial discharge instrument in this embodiment:
（1）通过计算机控制射频信号发生器产生符合电力行业的方波信号，通过串口线连接到射频信号发生器的输入端；(1) Control the radio frequency signal generator through the computer to generate a square wave signal in line with the power industry, and connect it to the input terminal of the radio frequency signal generator through a serial port line;
（2）射频信号发生器的一个输出端用同轴低损耗电缆接至高清数字示波器的通道，同时设置示波器至合适的采集状态；另一输出端连接设计好的射频天线；(2) One output end of the RF signal generator is connected to the channel of the high-definition digital oscilloscope with a coaxial low-loss cable, and the oscilloscope is set to a suitable acquisition state at the same time; the other output end is connected to the designed RF antenna;
（3）设计好的支架上无缝对接放置被测局放仪传感器，使得射频天线和被测局放仪传感器无缝对接；(3) Place the sensor of the PD instrument under test on the designed bracket seamlessly, so that the RF antenna and the sensor of the PD instrument under test are seamlessly connected;
（4）被测局放仪传感器通过同轴电缆连接到被测特高频局放仪上；(4) The sensor of the tested partial discharge instrument is connected to the tested UHF partial discharge instrument through a coaxial cable;
（5）信号源，通过计算机控制射频信号发生器产生符合电力行业的方波信号，射频信号发生器产生的符合电力行业标准的方波信号，脉宽为5~50ns，幅度为100mv~200V，其上升沿和下降沿的时间，范围为100ps~5ns；射频天线接收射频信号发生器产生的符合电力行业标准的方波信号，无缝对接被测局放仪传感器，被测局放仪传感器将接收的方波信号传送至被测局放仪进行测评，观察被测局放仪检测到的实际波形；(5) Signal source, the computer controls the radio frequency signal generator to generate a square wave signal in line with the power industry, and the radio frequency signal generator produces a square wave signal in line with the power industry standard, with a pulse width of 5~50ns and an amplitude of 100mv~200V. The time of its rising edge and falling edge ranges from 100ps to 5ns; the RF antenna receives the square wave signal generated by the RF signal generator in line with the power industry standard, and seamlessly connects with the sensor of the PD instrument under test. The sensor of the PD instrument under test will The received square wave signal is sent to the tested partial discharge instrument for evaluation, and the actual waveform detected by the tested partial discharge instrument is observed;
（6）调节方波信号幅值2V-200V（即该范围内取端点值，端点范围内的任意值皆可），设置信噪比大于3dB，观察被测局放仪的输出结果，取三段分别测试，第一段0-10V，得到灵敏度最大值-75dB；第二段10-50V，灵敏度逐渐变小但仍具有灵敏性；第三段50-200V，灵敏度趋于不变或已饱和测不出。绘制灵敏度曲线，以此来测评该局放仪的灵敏度。本实施例中利用上述范围中的具体值和现有的测灵敏度的操作流程相对应的得出灵敏度绘制成曲线如图2所示。(6) Adjust the amplitude of the square wave signal from 2V to 200V (that is, take the endpoint value within this range, any value within the endpoint range is acceptable), set the signal-to-noise ratio greater than 3dB, observe the output results of the PD instrument under test, and take three The first section is 0-10V, and the maximum sensitivity is -75dB; the second section is 10-50V, the sensitivity gradually decreases but still has sensitivity; the third section is 50-200V, the sensitivity tends to remain unchanged or is saturated Undetectable. Draw a sensitivity curve to evaluate the sensitivity of the PD instrument. In this embodiment, the specific values in the above-mentioned ranges are used to draw a curve as shown in FIG.
上面结合附图对本实用新型的具体实施方式作了详细说明，但是本实用新型并不限于上述实施方式，在本领域普通技术人员所具备的知识范围内，还可以在不脱离本实用新型宗旨的前提下作出各种变化。The specific implementation of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned implementation. Various changes are made.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821882045.6U CN209296901U (en) | 2018-11-15 | 2018-11-15 | An evaluation device for UHF partial discharge instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821882045.6U CN209296901U (en) | 2018-11-15 | 2018-11-15 | An evaluation device for UHF partial discharge instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209296901U true CN209296901U (en) | 2019-08-23 |
Family
ID=67644630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821882045.6U Active CN209296901U (en) | 2018-11-15 | 2018-11-15 | An evaluation device for UHF partial discharge instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209296901U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407026A (en) * | 2018-11-15 | 2019-03-01 | 昆明理工大学 | A kind of assessment device and method of superfrequency PD meter |
-
2018
- 2018-11-15 CN CN201821882045.6U patent/CN209296901U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407026A (en) * | 2018-11-15 | 2019-03-01 | 昆明理工大学 | A kind of assessment device and method of superfrequency PD meter |
| CN109407026B (en) * | 2018-11-15 | 2024-03-19 | 昆明理工大学 | Evaluation device and method for ultrahigh frequency partial discharge instrument |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103954890B (en) | DC partial discharge detection device and method for converter transformer | |
| CN102866375B (en) | System and method for calibrating receiving performance of partial-discharge ultrahigh frequency detection device | |
| CN108957379B (en) | On-site calibration method for GIS partial discharge ultrahigh frequency detection equipment | |
| CN103499755B (en) | Microwave oscillator automatically testing parameters method and apparatus | |
| CN106842092A (en) | Sensor Frequency Response scaling method and device in live testing apparatus for local discharge | |
| CN202854315U (en) | System for calibrating receiving performance of partial-discharge ultrahigh frequency detection device | |
| CN105911499A (en) | Ultrasonically local discharging metering system under onsite environment and method | |
| CN104375068A (en) | Visual ultrasonic quick inspection device used for power transmission and distribution line patrolling | |
| CN105759187A (en) | Combined electric apparatus partial discharge multi-information fusion diagnostic device | |
| CN107544044A (en) | GIS built-in ultrahigh frequency transducer sensitivity on-site calibration devices and method of calibration | |
| CN110794329A (en) | Test method for defect identification ability of partial discharge live detector for combined electrical appliances and switchgear | |
| CN208172228U (en) | The system that a kind of pair of high-frequency method local discharge sensor carries out anti-interference detection | |
| CN102288812B (en) | Static dynamic potential intelligent test device with real-time testing technique | |
| CN209296901U (en) | An evaluation device for UHF partial discharge instrument | |
| CN109407026B (en) | Evaluation device and method for ultrahigh frequency partial discharge instrument | |
| CN202066903U (en) | Intelligent device suitable for static dynamic potential real-time test | |
| CN105093087A (en) | ESD characteristic test system | |
| CN203164407U (en) | Ultrahigh-frequency partial discharge state detection instrument calibrating device | |
| CN108519572A (en) | An evaluation device and evaluation method for a transient earth voltage partial discharge instrument | |
| CN106680608A (en) | Ultrahigh-frequency sensor evaluation method by utilizing GTEM cell | |
| CN203759193U (en) | Direct-current partial discharge detection device of converter transformer | |
| CN110609247A (en) | A Calibration System for Transient Ground Voltage Partial Discharge Detector | |
| CN102798844A (en) | Method for measuring input output delay signal isolation of same port | |
| CN205562732U (en) | Many information fusion diagnostic device of combined electrical apparatus partial discharge | |
| CN113358988B (en) | Partial discharge detection system, method, device, computer equipment and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |