CN210323335U - Evaluation device for anti-electromagnetic interference performance of ultrahigh frequency partial discharge detector - Google Patents
Evaluation device for anti-electromagnetic interference performance of ultrahigh frequency partial discharge detector Download PDFInfo
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Abstract
The utility model provides an evaluation device of anti-electromagnetic interference performance of an ultrahigh frequency partial discharge detector, including control system, signal generator, power amplifier, GIS solid model, transmission sensor and receiving sensor, control system includes software host computer, typical interference data memory cell, control command output port module and the instrument communication port module that detects, signal generator includes signal transmission module, sequence transmission control module and a plurality of signal output channel, GIS solid model includes high-voltage bushing, circuit breaker, closed insulating basin, open insulating basin, experiment observation window and GIS cavity, the utility model discloses according to the source, the characteristics and the influence condition of interference in the partial discharge detection process, adopt GIS solid model to restore true measuring environment; the utility model discloses a power equipment superfrequency partial discharge detection device interference killing feature provides effectual evaluation device.
Description
Technical Field
The utility model relates to a detection technology field is put in the office, specifically is an evaluation device of detector anti-electromagnetic interference performance is put in superfrequency office.
Background
Partial discharge Ultra High Frequency (UHF) detection has become a key technology for detecting the insulation state of high-voltage power equipment such as GIS, transformers and cables, and is especially more effective for early detection of sudden faults than methods such as chromatography and gas analysis. Operation experience shows that the problems of false alarm and missing report of on-site partial discharge detection are very serious, and the problem of electromagnetic interference is a key technical bottleneck which troubles the application of the partial discharge on-line monitoring technology for a long time.
At present, in order to promote the development of the power equipment partial discharge state detection technology, a power grid enterprise sets a series of standards and specifications. These standards include both general and specific requirements. The general technical specifications stipulate general requirements of live detection and online monitoring equipment in terms of environmental suitability, electromagnetic compatibility and the like, which are basic conditions for ensuring that the equipment can normally work in a substation environment. The special specification specifies the requirements of the special detection performance of the partial discharge detection device and a detection method, such as the coupling performance of the sensor, the sensitivity and the dynamic range of a detection system and the like. The sensor coupling characteristic, the system sensitivity and the dynamic range reflect the core hardware performance of the partial discharge detection device, and are key indexes for ensuring that the device can effectively detect weak discharge and correctly reflect the discharge intensity. However, due to the complexity of electromagnetic interference on the site of the substation, especially the lack of systematic research on the electromagnetic interference characteristics existing in the partial discharge detection, the existing standard lacks an effective evaluation device for the electromagnetic interference resistance of the partial discharge detection device, and the research in the field is basically in a blank state.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an evaluation device of detector anti-electromagnetic interference ability is put in superfrequency office is applied to partial discharge superfrequency detection device's the evaluation of network access detection, laboratory to partial discharge detection instrument anti-interference ability, puts the blank of detection device interference killing feature evaluation to filling the office, and perfect office puts state detection technical standard and has engineering practical value.
In order to achieve the above object, the utility model provides a following technical scheme: an evaluation device for the anti-electromagnetic interference performance of an ultrahigh frequency partial discharge detector comprises a control system, a signal generator, a power amplifier, a GIS solid model, a transmitting sensor and a receiving sensor, the control system comprises a software upper computer, a typical interference data storage unit, a control command output port module and a communication port module of the instrument to be detected, the signal generator comprises a signal transmitting module, a sequence transmitting control module and a plurality of signal output channels, the GIS entity model comprises a high-voltage bushing, a circuit breaker, a closed insulating basin, an open insulating basin, an experimental observation window and a GIS cavity, the high-voltage bushing, the circuit breaker, the closed insulating basin, the open insulating basin and the experimental observation window are all connected with the GIS cavity through metal bolts, the transmitting sensor includes a built-in UHF sensor and a noise sensor, and the receiving sensor includes a plurality of unipolar probes.
The software upper computer is connected with the control command output port module and the signal generator through network cables, the signal generator is controlled to execute corresponding work by sending control commands, and the communication port module of the instrument to be detected can be connected with the UHF detector to be detected through a USB interface.
The sequence emission control module is used for realizing editing and reduction of random pulse signals, intermittent pulse signals and narrow-band communication signals, and the signal output channels can emit various typical interference signals through the signal generator.
The emission sensor adopts a built-in UHF sensor to inject signals, and adopts a noise sensor to emit interference signals to the environment space.
Preferably, the software host computer can call data of a typical interference data storage unit.
Preferably, the software upper computer automatically reads the detection result of the UHF detector to be detected, and automatically judges the anti-interference performance of the UHF detector to be detected through a program to obtain the evaluation result of the anti-interference performance; for the UHF detector to be detected which cannot establish communication, the detection result of the UHF detector to be detected can be manually input, and then the evaluation result of the anti-interference performance is generated through a program.
Preferably, the plurality of signal output channels include three signal output channels, namely a first signal output channel, a second signal output channel and a third signal output channel, the first signal output channel is connected to the built-in UHF sensor, the second signal output channel is connected to the high voltage bushing, and the third signal output channel is connected to the noise sensor.
Preferably, the internal structure of the noise sensor adopts a conical helical antenna structure.
Preferably, the receiving sensor is connected to the UHF detector to be detected by using a plurality of unipolar probes.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model can accurately reproduce random pulse signals, intermittent pulse signals and narrow-band communication signals collected by a transformer substation field or a laboratory; the utility model has a plurality of sensor emitting points, and can realize aliasing simulation of multi-type signals; the utility model adopts a GIS entity model to restore the real detection environment according to the interference source, characteristics and influence conditions in the partial discharge detection process; the utility model discloses a power equipment superfrequency partial discharge detection device interference killing feature provides effectual evaluation device, has filled the blank to partial discharge superfrequency detection device interference killing feature evaluation device in the trade.
Drawings
FIG. 1 is a schematic view of the main structure of the present invention;
FIG. 2 is a schematic diagram of a GIS solid model structure of the present invention;
FIG. 3 is a connection diagram of the device of the present invention and a UHF detector to be detected;
FIG. 4 is a schematic structural diagram of the control system of the present invention;
fig. 5 is a schematic structural diagram of the signal generator of the present invention.
Illustration of the drawings: 1-a control system; 2-a signal generator; 3-a power amplifier; 4-GIS solid model; 5-a monopolar probe; 6-built-in UHF sensor; 7-a noise sensor; 8-high voltage bushing; 9-open insulation basin; 10-closed insulating basin; 11-experimental observation window; 12-a circuit breaker; 13-a GIS cavity; 14-UHF detector to be detected.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1-5, the present invention provides a technical solution: an evaluation device for anti-electromagnetic interference performance of an ultrahigh frequency partial discharge detector comprises a control system 1, a signal generator 2, a power amplifier 3, a GIS entity model 4, a transmitting sensor and a receiving sensor, wherein the control system 1 comprises a software upper computer, a typical interference data storage unit, a control command output port module and a communication port module of an instrument to be detected, the signal generator 2 comprises a signal transmitting module, a sequence transmitting control module and a plurality of signal output channels, the transmitting sensor comprises a built-in UHF sensor 6 and a noise sensor 7, the receiving sensor comprises a plurality of single-pole probes 5, and models of the built-in UHF sensor 6, the noise sensor 7 and the single-pole probes 5 are ZCCGQ-U-YF-01, ZCCGQ-U-ZS-01 and SUP-1 respectively.
The software upper computer is connected with the control command output port module and the signal generator 2 through network cables, the signal generator 2 is controlled to execute corresponding work by sending control commands, and the communication port module of the instrument to be detected can be connected with the UHF detector 14 to be detected through a USB interface.
Sequence emission control module, signal transmission module and a plurality of signal output channel connect gradually, signal transmission module chooses for use and reaches 16GSa/S sampling rate, the signal transmission module of 10GHz bandwidth, and the superfrequency signal that can be gathered in nearly complete reduction scene and laboratory, sequence emission control module can realize random type pulse signal, intermittent type nature pulse signal and narrowband communication signal' S editing reduction, a plurality of signal output channel, accessible signal generator 2 transmit multiple typical interference signal.
The power amplifier 3 is used for amplifying the power of the signal output by the signal generator 2, and the frequency range of the power amplifier 3 selected by the device is 50 MHz-40 GHz; typical gain values are 30 dB; the gain flatness is +/-3 dB; the noise figure is 6.0 dB.
The GIS solid model 4 is designed and manufactured according to the proportion of 1: 1 by imitating a 110KV GIS, and comprises a high-voltage bushing 8, an open type insulation basin 9, a closed type insulation basin 10, an experiment observation window 11, a circuit breaker 12 and a GIS cavity 13, wherein the high-voltage bushing 8, the circuit breaker 12, the closed type insulation basin 10, the open type insulation basin 9 and the experiment observation window 11 are all connected with the GIS cavity 13 through metal bolts, so that the field GIS live-line detection environment can be simulated more truly.
The emission sensor adopts a built-in UHF sensor 6 to inject signals, and adopts a noise sensor 7 to emit interference signals to the environment space.
Preferably, the software host computer can call data of a typical interference data storage unit.
Preferably, the software upper computer automatically reads the detection result of the to-be-detected UHF detector 14, and automatically judges the anti-interference performance of the to-be-detected UHF detector 14 through a program to obtain an evaluation result of the anti-interference performance; for the to-be-detected UHF detector 14 that cannot establish communication, the detection result of the to-be-detected UHF detector 14 may be manually input, and then the evaluation result of the anti-interference performance may be generated by a program.
Preferably, the plurality of signal output channels include three signal output channels, namely a first signal output channel, a second signal output channel and a third signal output channel, wherein the first signal output channel is connected to the built-in UHF sensor 6, the second signal output channel is connected to the high voltage bushing 8, and the third signal output channel is connected to the noise sensor 7.
Preferably, the internal structure of the noise sensor 7 adopts a conical helical antenna structure, which can effectively improve the detection sensitivity and the detection frequency band of the noise sensor 7, and realize omnidirectional reception of various interference signals, and has the following characteristics: 1) maximum radiation along the axial direction; 2) the radiation field is a circularly polarized wave; 3) the current on the antenna wire is distributed according to the traveling wave; 4) the input impedance is approximately a pure resistance; 5) the broadband characteristic is achieved; 6) the antenna gain is high.
Preferably, the receiving sensor is connected to the UHF detector 14 to be detected by using a plurality of single-pole probes 5, and the single-pole probes 5 have the characteristics of stable transfer function and small influence on electric field distortion of the position to be detected.
The working principle is as follows: firstly, a first signal output channel of a signal generator 2 is connected to a built-in UHF sensor 6, a second signal output channel is connected to a high-voltage bushing 8, a third signal output channel is connected to a noise sensor 7, a plurality of single-pole probes 5 are connected to a UHF detector 14 to be detected, after the detection is finished, an evaluation device is used, a software upper computer sends a control instruction to control the signal generator 2 to respectively and simultaneously emit typical interference signals of different types in the three signal output channels, the output signals are respectively connected to the positions of the built-in sensor, the high-voltage bushing 8 and the noise sensor 7 after passing through a power amplifier 3, the UHF detector 14 to be detected measures the signal intensity of the position of the single-pole probe 5, then a communication port module of the instrument to be detected is connected with the UHF detector 14 to be detected through a USB interface, and the, automatically judging the anti-interference performance of the UHF detector 14 to be detected through a program to obtain an evaluation result of the anti-interference performance; for the to-be-detected UHF detector 14 that cannot establish communication, the detection result of the to-be-detected UHF detector 14 may be manually input, and then the evaluation result of the anti-interference performance may be generated by a program.
The foregoing merely illustrates preferred embodiments of the present invention, which are described in considerable detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, modifications and substitutions can be made, which are all within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (4)
1. The utility model provides an evaluation device of detector anti-electromagnetic interference ability is put in superfrequency office which characterized in that: the device comprises a control system, a signal generator, a power amplifier, a GIS entity model, a transmitting sensor and a receiving sensor, wherein the control system comprises a software upper computer, a typical interference data storage unit, a control command output port module and a communication port module of an instrument to be detected, the signal generator comprises a signal transmitting module, a sequence transmitting control module and a plurality of signal output channels, the GIS entity model comprises a high-voltage bushing, a circuit breaker, a closed insulating basin, an open insulating basin, an experiment observation window and a GIS cavity, the high-voltage bushing, the circuit breaker, the closed insulating basin, the open insulating basin and the experiment observation window are all connected with the GIS cavity through metal bolts, the transmitting sensor comprises a built-in UHF sensor and a noise sensor, and the receiving sensor comprises a plurality of single-pole probes;
the software upper computer is connected with the control command output port module and the signal generator through network cables, the signal generator is controlled to execute corresponding work by sending control commands, and the communication port module of the instrument to be detected can be connected with the UHF detector to be detected through a USB interface;
the system comprises a sequence emission control module, a signal emission module and a plurality of signal output channels, wherein the sequence emission control module, the signal emission module and the plurality of signal output channels are sequentially connected, the signal emission module is used for restoring ultrahigh frequency signals acquired in a field and a laboratory, the sequence emission control module is used for realizing editing and restoring of random pulse signals, intermittent pulse signals and narrow-band communication signals, and the plurality of signal output channels can emit various typical interference signals through a signal generator;
the emission sensor adopts a built-in UHF sensor to inject signals, and adopts a noise sensor to emit interference signals to the environment space.
2. The apparatus for evaluating the anti-electromagnetic interference performance of the ultrahigh frequency partial discharge detector according to claim 1, wherein: the plurality of signal output channels comprise a first signal output channel, a second signal output channel and a third signal output channel, the first signal output channel is connected to the built-in UHF sensor, the second signal output channel is connected to the high-voltage bushing, and the third signal output channel is connected to the noise sensor.
3. The apparatus for evaluating the anti-electromagnetic interference performance of the ultrahigh frequency partial discharge detector according to claim 1, wherein: the internal structure of the noise sensor adopts a conical spiral antenna structure.
4. The apparatus for evaluating the anti-electromagnetic interference performance of the ultrahigh frequency partial discharge detector according to claim 1, wherein: the receiving sensor is connected to the UHF detector to be detected by adopting a plurality of single-pole probes.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111537935A (en) * | 2020-06-11 | 2020-08-14 | 国网宁夏电力有限公司电力科学研究院 | High-frequency partial discharge anti-interference function verification method and system |
| CN111722169A (en) * | 2020-06-10 | 2020-09-29 | 深圳供电局有限公司 | Anti-interference performance detection device and method of high-frequency partial discharge detector |
| CN114994587A (en) * | 2022-08-04 | 2022-09-02 | 国网江西省电力有限公司电力科学研究院 | Anti-interference energy evaluation method for partial discharge detector |
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2019
- 2019-04-10 CN CN201920482567.5U patent/CN210323335U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111722169A (en) * | 2020-06-10 | 2020-09-29 | 深圳供电局有限公司 | Anti-interference performance detection device and method of high-frequency partial discharge detector |
| CN111537935A (en) * | 2020-06-11 | 2020-08-14 | 国网宁夏电力有限公司电力科学研究院 | High-frequency partial discharge anti-interference function verification method and system |
| CN114994587A (en) * | 2022-08-04 | 2022-09-02 | 国网江西省电力有限公司电力科学研究院 | Anti-interference energy evaluation method for partial discharge detector |
| CN114994587B (en) * | 2022-08-04 | 2022-12-30 | 国网江西省电力有限公司电力科学研究院 | Energy evaluation method for anti-interference performance of partial discharge detection instrument |
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