CN114689998A - Portable dial partial discharge detection device, system and method - Google Patents
Portable dial partial discharge detection device, system and method Download PDFInfo
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- CN114689998A CN114689998A CN202210160821.6A CN202210160821A CN114689998A CN 114689998 A CN114689998 A CN 114689998A CN 202210160821 A CN202210160821 A CN 202210160821A CN 114689998 A CN114689998 A CN 114689998A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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Abstract
The invention discloses a device, a system and a method for detecting partial discharge of a portable dial plate, wherein the device comprises a shell, a detection component and a control component; the detection assembly array is arranged on the shell, and the control assembly is arranged in the shell and connected with the detection assembly; the detection component comprises a detection channel and a dial component; the detection passage is provided on the housing, and the dial member is rotatably provided on the housing and on a side of the detection passage. The driver plate capable of rolling is arranged on the driver plate component, so that identification confirmation of the detection channel and the sensor is realized, workers can conveniently identify and position the sensor, and the working efficiency is improved; the automatic positioning of the position of the local discharge source in the GIS is realized by collecting and processing the local discharge signal in real time; the device has compact and light structure, can conveniently and quickly carry out field test and automatically finish the diagnosis and positioning of insulation defects, and is widely suitable for various high-voltage equipment such as GIS, transformers, cables, generators and the like.
Description
Technical Field
The invention relates to the field of partial discharge detection, in particular to a portable dial partial discharge detection device, system and method.
Background
In recent years, ultrahigh frequency partial discharge live detection of high-voltage equipment of a GIS (gas Insulated switchgear) becomes an important means for evaluating the insulation performance of the equipment, but the detection of the existence of a partial discharge signal is far insufficient for risk evaluation and guidance and maintenance. The accurate positioning of the partial discharge source is an essential step for equipment maintenance.
In the process of detecting and positioning the partial discharge live of the GIS equipment, the portable detection equipment is usually provided with a plurality of detection channels for connecting a plurality of different sensors. The sensors are arranged at different places of the GIS equipment, but the detection channels cannot correspond to the sensors one by one due to the fact that the number of the channels is large and an identification means is lacked, or detection personnel forget and change, so that the sensors at the other ends need to be confirmed and distinguished again, and working efficiency is affected.
Disclosure of Invention
The invention aims to provide a portable dial partial discharge detection device, a system and a method, which are used for solving the problems that a partial discharge source cannot be accurately positioned and a sensor and a detection channel lack identification correspondence.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a portable dial partial discharge detection device comprises a shell, a detection component and a control component; the detection assembly array is arranged on the shell, and the control assembly is arranged in the shell and connected with the detection assembly;
the detection component comprises a detection channel and a dial component; the detection channel is arranged on the shell, and the dial component is rotatably arranged on the shell and arranged on one side of the detection channel;
the drive plate component comprises a box body, a drive plate, a support rod and a gear, wherein the drive plate, the support rod and the gear are arranged in the box body; the box body sets up on the casing, the bracing piece level sets up in the box body and both ends are connected the box body inside wall, the coaxial cover of driver plate is established on the support frame, the coaxial setting of gear is in driver plate one side on the bracing piece and with the driver plate is connected, the gear can with the driver plate is in coaxial rotation on the support frame.
Preferably, the housing includes: the bottom shell and the panel arranged on the bottom shell; the detection channel array is arranged on one side of the upper end face of the panel, the control assembly is arranged in the bottom shell, and the box body is arranged on the upper end face of the panel.
Preferably, the circumference of the drive plate is uniformly provided with limit grooves and display plates at intervals.
Preferably, a display hole is formed in the upper end face of the box body, and the drive plate is arranged at the lower end of the display hole and opposite to the display hole;
a tooth groove is formed in the upper end face of the box body, and the gear is arranged in the tooth groove.
Preferably, the control device further comprises a switch assembly, a power supply assembly, a phase synchronization assembly, a data transmission and storage assembly and a grounding assembly which are arranged on the panel, and the control assembly is respectively connected with the switch assembly, the power supply assembly, the phase synchronization assembly, the data transmission and storage assembly and the grounding assembly.
Preferably, the phase synchronization assembly comprises an external synchronization interface, a wireless synchronization interface and an SMA adapter.
Preferably, the data transmission and storage component comprises a USB connection socket, a network connection socket and a signal indicator light.
A portable dial partial discharge detection system comprises a sensor assembly, a radio frequency coaxial cable and a display terminal; the sensor assembly is connected with the detection channel through a radio frequency coaxial cable to transmit a partial discharge signal, the control assembly collects the partial discharge signal, performs analog/digital electric conversion and filtering processing on the signal, is connected with the display terminal through the data transmission and storage assembly to transmit a voltage signal, and the display terminal receives the voltage signal, displays the voltage signal and performs data analysis.
Preferably, the sensor assembly comprises an external ultrahigh frequency sensor, a built-in ultrahigh frequency sensor, a transformer oil drain valve type ultrahigh frequency sensor, a high-frequency pulse current sensor, a high-frequency transient ground voltage sensor and a radio frequency antenna.
A portable dial partial discharge detection method, the partial discharge detection device of the portable dial carries on the self-checking of the apparatus, then mount the sensor, dial the dial on the component of the dial, make the sensor model on the dial correspond to sensor mounted; the sensors perform initial detection, receive electromagnetic waves radiated into the GIS, automatically calculate the time difference of pulse signals received by any two sensors after analog-to-digital conversion of the control assembly, and obtain the distance between a local discharge source and the two sensors by counting a plurality of positioning results based on the PRPD spectrums of local discharge in the two channels.
The driver plate capable of rolling is arranged on the driver plate component, so that identification confirmation of the detection channel and the sensor is realized, workers can conveniently identify and position the sensor, and the working efficiency is improved; the automatic positioning of the position of the local discharge source in the GIS is realized by collecting and processing the local discharge signal in real time; the device has compact and light structure, can conveniently and quickly carry out field test and automatically finish the diagnosis and positioning of insulation defects, and is widely suitable for various high-voltage equipment such as GIS, transformers, cables, generators and the like.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 1 in accordance with the present invention;
FIG. 4 is a schematic view of the connection structure of the detection system of the present invention
FIG. 5 is a flow chart of the detection method of the present invention;
FIG. 6 is a schematic diagram of a pulse clustering map according to the present invention;
FIG. 7 is a schematic diagram of the field connection of the apparatus of the present invention;
the notation in the figures means: 1-a shell; 2-a detection component; 3-a control component; 4-a detection channel; 5-a dial member; 6-box body; 7-a dial; 8-a support bar; 9-gear; 10-a bottom shell; 11-a panel; 12-a limiting groove; 13-a display panel; 14-display well; 15-gullet; 16-a switch assembly; 17-a phase synchronization component; 18-a data transfer and storage component; 19-power supply components; 20-a ground component; 21-an external synchronization interface; 22-wireless synchronization interface; 23-SMA adapter; 24-a USB connection socket; 25-network connection socket; 26-signal indicator light; 27-a sensor assembly; 28-radio frequency coaxial cable; 29-a display terminal; 30-a battery assembly; 31-portable dial partial discharge detection device; and 32-GIS substation.
Detailed Description
The technical solution of the present invention is further described below with reference to the following embodiments and the accompanying drawings.
Example 1
The embodiment provides a portable dial partial discharge detection device, which comprises a shell 1, 6 detection components 2 and a control component 3; the 6 detection components 2 are sequentially arrayed on the shell 1 from top to bottom, signals from the 6 sensors can be synchronously measured, and the control component 3 is arranged in the shell 1 and connected with the detection components 2;
the detection component 2 comprises a detection channel 4 and a dial component 5; the detection channel 4 is arranged on the shell 1 and can be compatible with ultrahigh frequency and high frequency sensors, and the dial component 5 is rotatably arranged on the shell 1 and arranged on one side of the detection channel 4;
the dial component 5 comprises a box body 6, a dial 7 arranged in the box body 6, a support rod 8 and a gear 9; the box body 6 is detachably arranged on the shell 1, the supporting rod 8 is horizontally arranged in the box body 6, two ends of the supporting rod are connected with the inner side wall of the box body 6, the driving plate 7 is coaxially sleeved on the supporting frame, the gear 9 is coaxially arranged on one side of the driving plate 7 on the supporting rod 8 and is connected with the driving plate 7, and the gear 9 can coaxially rotate on the supporting frame with the driving plate 7.
Aiming at the problem that the prior art sensor and the detection channel 4 lack identification correspondence, the invention discloses a dial component 5.A box body 6 is arranged on one side of the detection channel 4, so that the dial 7 is convenient to debug, and a dial gear 9 can drive the dial 7 to rotate together, so as to realize identification of the sensor.
In a further embodiment of the present embodiment, the housing 1 comprises: a bottom case 10 and a panel 11 disposed on the bottom case 10; the array of detection channels 4 is arranged on one side of the upper end face of the panel 11, the control component 3 is arranged in the bottom shell 10, and the box body 6 is arranged on the upper end face of the panel 11.
In a further embodiment of the present embodiment, the dial 7 is provided with the limit grooves 12 and the display plates 13 at regular intervals on the circumference, the display plates 13 can display different sensor models, which are determined according to the types of sensors that the control component 3 can be connected to, when the sensors are not connected, the display plates 13 can be shifted to a blank interface, and the limit grooves 12 are arranged between the display plates 13 for distinguishing the display plates 13; if the sensor model is updated, the box body 6 can be detached from the panel 11, and the sensor model on the display panel 13 can be replaced.
In a further embodiment of the embodiment, a display hole 14 is arranged on the upper end surface of the box body 6, a dial 7 is arranged at the lower end of the display hole 14 and is opposite to the display hole, and a display panel 13 on the dial 7 displays the type and model of the sensor through the display hole 14;
be provided with tooth's socket 15 on the box body 6 up end, gear 9 sets up in tooth's socket 15, and gear 9 part sets up on tooth's socket 15, makes things convenient for the finger to rotate.
In a further embodiment of the present embodiment, the control unit 3 further includes a switch unit 16, a power supply unit 19, a phase synchronization unit 17, a data transmission and storage unit 18, and a ground unit 20, which are disposed on the panel 11, and the switch unit 16, the power supply unit 19, the phase synchronization unit 17, the data transmission and storage unit 18, and the ground unit 20 are connected to the control unit 3, respectively.
In a further embodiment of this embodiment, the phase synchronization component 17 includes an external synchronization interface 21, a wireless synchronization interface 22, and an SMA adapter 23; the external synchronization interface 21 inputs a voltage range: 0.5V-300 VAC, input frequency range: 30 Hz-500 Hz; the wireless synchronization interface 22 is used for connecting an antenna to receive a power frequency signal synchronizer signal.
In a further embodiment of this embodiment, the data transmission and storage component 18 includes a USB connection socket 24, a network connection socket 25 and a signal indicator lamp 26, and is used for connecting a terminal device such as a computer to transmit partial discharge data.
In a further embodiment of the present embodiment, the control unit 3 is provided with a battery unit 30, which can be powered internally for 7-8 hours, or can be connected to an external battery via the power supply unit 19 for operation or charging.
Example 2
The embodiment provides a partial discharge detection system of a portable dial 7, which comprises a sensor component 27, a radio frequency coaxial cable 28 and a display terminal 29; the sensor component 27 is connected with the detection channel 4 through a radio frequency coaxial cable 28, transmits partial discharge signals, the control component 3 collects the partial discharge signals, performs analog/digital electrical conversion and filtering processing on the signals, is connected with the display terminal 29 through the data transmission and storage component 18, transmits voltage signals, and the display terminal 29 receives the voltage signals, displays and analyzes the data.
In a further embodiment of this embodiment, the rf coaxial cable 28 can be labeled with different colors, so as to conveniently confirm the position where the sensor is placed, and the display terminal 29 is generally a notebook computer, and can be matched with a portable dial partial discharge detection device to perform live detection and positioning in the field, so that the portable dial partial discharge detection device is convenient to carry.
In a further embodiment of this embodiment, the sensor module 27 includes an external uhf sensor, an internal uhf sensor, a transformer drain valve type uhf sensor, a high-frequency pulse current sensor, a high-frequency transient ground voltage sensor, and a radio frequency antenna.
The UHF method (ultra high frequency, abbreviated as UHF) receives an UHF electromagnetic wave signal in a 300-3000 MHz frequency band radiated by partial discharge using an antenna sensor installed inside or outside the GIS substation 32, thereby detecting and analyzing the partial discharge. The GIS substation 32 in operation is filled with SF6 gas with high pressure, and the insulation strength and the breakdown field strength are high. When the local discharge occurs in a small range, the gas breakdown process is fast, a steep pulse current is generated, and electromagnetic waves are radiated to the periphery. The cavity structure of the GIS device is equivalent to a good coaxial waveguide, which is very favorable for the transmission of electromagnetic waves, so that the electromagnetic waves can be detected by an ultrahigh frequency sensor in a certain range.
The installation mode of the ultrahigh frequency sensor is widely applied at present, and the two main types are: external and internal. The built-in sensor is arranged in a GIS manufacturing factory during manufacturing, the external sensor can be installed in an electrified mode, the external sensor is arranged at the position, not wrapped by a metal shield, of the outer side of the GIS basin-type insulator or at a dielectric window on a GIS shell, and ultrahigh frequency signals are detected by means of leakage of electromagnetic waves at the position of an insulating dielectric.
The partial discharge characteristic information includes: the device comprises a maximum discharge amplitude, a discharge phase, a discharge frequency and a discharge spectrogram, wherein the discharge spectrogram is formed by test data of not less than 50 continuous power frequency cycles.
The automatic positioning technology based on ultrahigh frequency partial discharge has the following advantages:
(1) for severe field environment, such as low temperature below minus 20 ℃, the oscilloscope can not normally operate; if the monitoring system with the positioning function is selected, the all-weather online positioning function can be realized, and the working efficiency is improved.
(2) Based on the automatic positioning of the PRPD partial discharge map, namely, the selected positioning pulses are all partial discharge pulses rather than noise pulse signals, and compared with an oscilloscope, the method has a more excellent denoising function.
(3) When GIS causes flashover breakdown because of the partial discharge reason, can fix a position through looking over historical monitoring data, find partial discharge source position arrangement fast and overhaul, avoid being forced to take destructive test because of unable location.
(4) When the system detects the partial discharge signal, the position of the discharge source can be known at the first time to make a related plan.
(5) Once the intermittent partial discharge signal is acquired, the positioning of the partial discharge source can be completed, and the problem that an oscilloscope waits for a long time on site is avoided.
Example 3
The embodiment provides a portable dial plate partial discharge detection method, after arriving at a test site, firstly, carrying out self-check on a detection instrument, respectively injecting specific signals into each detection channel 4 by using a signal generator during self-check, observing received signals in a real-time PRPS (phase-shift keying) map mode, confirming that each detection channel 4, a connecting cable and a sensor of the instrument work normally, and then installing the sensor;
for each detection point, taking a split-phase GIS substation 32 as an example, 3 sensors are sequentially placed at a 3-phase GIS disc insulator or a cable joint, the positions of the sensors are distinguished through radio-frequency coaxial cables 28 with different colors, and a drive plate 7 is shifted on a drive plate member 5, so that the types of the sensors on the drive plate 7 correspond to those of the mounted sensors, workers can conveniently distinguish the types of the sensors, and workers who are handed over subsequently can conveniently and directly distinguish the sensors; the sensors perform preliminary detection, receive electromagnetic waves radiated into the GIS, automatically calculate the time difference of pulse signals received by any two sensors after analog-to-digital conversion of the control assembly 3, and obtain the distance between a local discharge source and the two sensors by counting a plurality of positioning results based on the PRPD spectrums of local discharge in the two channels.
In a further embodiment of this embodiment, the control component 3 can calculate parameters such as amplitude, power, frequency, first half-wave duration, full duration, and the like of the discharge pulse, and can record information such as power frequency phase, arrival time, original waveform, and the like as a basis for partial discharge diagnosis.
For each captured pulse, the control component 3 records a power frequency voltage phase corresponding to the pulse when the pulse occurs, and the power frequency voltage phase is used as a parameter for drawing a PRPS (pulse protection phase shift register) map, a PRPD (pulse position detector) map and a pulse clustering map; the signal pulse map is used as a statistical tool and is an important basis for confirming partial discharge and judging the type of discharge.
The control component 3 automatically triggers and completes the capture of the signal according to the level of the input pulse signal, and the trigger level setting has two modes of 'fixing' and 'self-adapting'. In the "fixed" mode, the user can manually set the trigger level so that all pulse signals with signal levels above the trigger level are captured. In "adaptive" mode, the user sets the maximum number of pulses to be acquired per second, and the control unit 3 adjusts the trigger level to capture as many pulses as possible without exceeding this set value.
For very high frequency signals, the pulse amplitude is in dBm according to international standards. dBm is defined as the log of the power (mW) produced when the sensor output voltage is applied to a 50 Ω load, using μ W as the pulse power unit.
X(dBm)10lgP(mW)
For high frequency signals, according to international standards, the pulse amplitude is in V, i.e. the output voltage value of the sensor, and mW is used as the pulse power unit.
In a further embodiment of this embodiment, the PD71 calculates, for each captured pulse, its first half-wave duration T1(ns) and full-time duration T2(ns) as parameters for mapping the pulse cluster map. The pulse signals emitted by different discharge sources are generally different from T1 and T2, so that the detection and identification of multiple partial discharge sources can be realized by separating different discharge source signals according to different distribution positions of the pulses in a T1-T2 plane.
In a further embodiment of this embodiment, the control component 3 is provided with a precise clock inside, which can record the arrival time (ns level) of each pulse in all channels, so as to realize the automatic positioning function of partial discharge.
In a further embodiment of the present embodiment, the control component 3 uses a "time difference comparison method" to automatically locate the local discharge source in the GIS.
In a further embodiment of this embodiment, the control component 3 has a time-domain filtering function, and can effectively filter out broadband noise in the substation, or only selectively receive a unidirectional pulse signal. The time domain filtering comprises two strategies of amplitude filtering and arrival time filtering.
Amplitude filtering is used to filter out ambient noise, and first a certain channel is selected as a detection channel 4, and another channel or channels are selected as reference channels. The detection channel 4 sensor is connected with the tested device, and the reference channel sensor is not connected with the tested device and is used for receiving noise. The user sets the amplitude ratio and the time difference. When the detection channel 4 detects the first pulse, if a second pulse which has a time difference of arrival with the first pulse smaller than the set time difference and an amplitude larger than the set proportion of the amplitude of the first pulse exists in the noise reference channel, the pulse source is considered to be positioned outside the tested equipment, and the first pulse is filtered. Example (c): the time window is 100ns, and the amplitude ratio is 70%, then the first pulse is filtered out when the second pulse of the reference channel exists in the green region near the first pulse of the detection channel 4.
Time-of-arrival filtering is used to retain only the signal of the signal source closest to the selected detection sensor. And setting amplitude proportion and time difference blind areas. When the detection channel 4 detects the first pulse, if a second pulse which is located outside the first pulse time difference dead zone, arrives before the first pulse and has an amplitude larger than a set proportion of the first pulse exists in the reference channel, the discharge source is considered to be closer to the reference channel, and the first pulse is filtered. Example (c): the amplitude proportion is 30%, the time difference dead zone is 2ns, and if the green area near the pulse of the detection channel 4 has the reference channel pulse, the pulse is filtered in the detection channel 4.
The sequence of the above embodiments is only for convenience of description and does not represent the advantages and disadvantages of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A portable dial partial discharge detection device is characterized by comprising a shell, a detection component and a control component; the detection assembly array is arranged on the shell, and the control assembly is arranged in the shell and connected with the detection assembly;
the detection component comprises a detection channel and a dial component; the detection channel is arranged on the shell, and the dial component is rotatably arranged on the shell and arranged on one side of the detection channel;
the drive plate component comprises a box body, a drive plate, a support rod and a gear, wherein the drive plate, the support rod and the gear are arranged in the box body; the box body sets up on the casing, the bracing piece level sets up in the box body and both ends are connected the box body inside wall, the coaxial cover of driver plate is established on the support frame, the coaxial setting of gear is in driver plate one side on the bracing piece and with the driver plate is connected, the gear can with the driver plate is in coaxial rotation on the support frame.
2. The portable dial partial discharge detection device of claim 1, wherein the housing comprises: the bottom shell and the panel arranged on the bottom shell; the detection channel array is arranged on one side of the upper end face of the panel, the control assembly is arranged in the bottom shell, and the box body is arranged on the upper end face of the panel.
3. The portable dial partial discharge detection device of claim 1, wherein the dial circumference is evenly spaced with a spacing groove and a display plate.
4. The portable dial partial discharge detection device of claim 1, wherein a display hole is provided on an upper end surface of the case body, and the dial is provided at a lower end of the display hole and disposed opposite thereto;
a tooth groove is formed in the upper end face of the box body, and the gear is arranged in the tooth groove.
5. The portable dial partial discharge detection apparatus as claimed in claim 2, further comprising a switch assembly, a power supply assembly, a phase synchronization assembly, a data transmission and storage assembly and a ground assembly provided on the panel, wherein the control assembly is connected to the switch assembly, the power supply assembly, the phase synchronization assembly, the data transmission and storage assembly and the ground assembly, respectively.
6. The portable dial partial discharge detection device of claim 5, wherein the phase synchronization assembly comprises an external synchronization interface, a wireless synchronization interface, and an SMA adapter.
7. The portable dial partial discharge detection device of claim 5, wherein the data transmission and storage component comprises a USB connection jack, a network connection jack and a signal indicator light.
8. A portable dial partial discharge detection system is characterized by comprising a sensor assembly, a radio frequency coaxial cable and a display terminal; the sensor assembly is connected with the detection channel through a radio frequency coaxial cable to transmit a partial discharge signal, the control assembly collects the partial discharge signal, performs analog/digital electric conversion and filtering processing on the signal, is connected with the display terminal through the data transmission and storage assembly to transmit a voltage signal, and the display terminal receives the voltage signal, displays the voltage signal and performs data analysis.
9. The portable dial partial discharge detection system of claim 8, wherein the sensor assembly comprises an external uhf sensor, an internal uhf sensor, a transformer drain valve type uhf sensor, a high frequency pulse current sensor, a high frequency transient ground voltage sensor, and a radio frequency antenna.
10. A portable dial partial discharge detection method is characterized in that a portable dial partial discharge detection device carries out equipment self-detection, then a sensor is installed, and a dial component is used for dialing the dial, so that the type of the sensor on the dial corresponds to the installed sensor; the sensors perform initial detection, receive electromagnetic waves radiated into the GIS, automatically calculate the time difference of pulse signals received by any two sensors after analog-to-digital conversion of the control assembly, and obtain the distance between a local discharge source and the two sensors by counting a plurality of positioning results based on the PRPD spectrums of local discharge in the two channels.
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| CN202210160821.6A CN114689998B (en) | 2022-02-22 | 2022-02-22 | Portable dial partial discharge detection device and method |
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| CN202210160821.6A CN114689998B (en) | 2022-02-22 | 2022-02-22 | Portable dial partial discharge detection device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117092456A (en) * | 2023-01-12 | 2023-11-21 | 特变电工山东鲁能泰山电缆有限公司 | Power cable partial discharge detection device and power failure detection system |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1834669A (en) * | 2006-04-19 | 2006-09-20 | 重庆大学 | On-line detecting and positioning device for local discharging of electrical insulated combined electrical appliance, and positioning method thereof |
| CN102435922A (en) * | 2011-10-26 | 2012-05-02 | 上海交通大学 | Acoustic-electric combined detection system and positioning method for GIS (Gas Insulated Switchgear) local discharge |
| CN202956817U (en) * | 2012-11-09 | 2013-05-29 | 建盈(广州番禺)塑料五金实业有限公司 | Numerical code electronic rotation drive plate coded lock |
| CN103926513A (en) * | 2014-04-30 | 2014-07-16 | 国网河南省电力公司商丘供电公司 | Portable ultrasonic online detection partial discharge diagnostic device |
| CN203981822U (en) * | 2014-04-30 | 2014-12-03 | 国网河南省电力公司商丘供电公司 | A kind of portable supersonic detects shelf depreciation diagnostic device online |
| CN104749498A (en) * | 2015-01-28 | 2015-07-01 | 西安交通大学 | Portable partial discharge detecting and diagnosing device |
| CN105467287A (en) * | 2016-01-08 | 2016-04-06 | 国网辽宁省电力有限公司沈阳供电公司 | GIS (Gas Insulated Switchgear) partial discharge automatic positioning device based on ultra-high frequency detection technology |
| CN109633391A (en) * | 2018-12-26 | 2019-04-16 | 国网江苏省电力有限公司 | A kind of portable multifunctional shelf depreciation on-line checking instrument for controller switching equipment |
| CN209327509U (en) * | 2018-12-26 | 2019-08-30 | 珠海市伊特高科技有限公司 | A kind of GIS ultrahigh frequency partial discharge test device using automatic positioning technology |
| CN110687404A (en) * | 2019-08-27 | 2020-01-14 | 西安电子科技大学 | Portable partial discharge detection equipment |
| CN111880052A (en) * | 2020-06-30 | 2020-11-03 | 国网山东省电力公司淄博供电公司 | Hand-held type partial discharge detection device based on bluetooth interconnection terminal cluster |
| CN212622899U (en) * | 2020-05-19 | 2021-02-26 | 河北陇能电力科技有限公司 | Portable high-voltage switch cabinet partial discharge automatic detection device |
| CN214042357U (en) * | 2021-02-09 | 2021-08-24 | 国网冀北电力有限公司承德供电公司 | Intelligent meter checking device |
-
2022
- 2022-02-22 CN CN202210160821.6A patent/CN114689998B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1834669A (en) * | 2006-04-19 | 2006-09-20 | 重庆大学 | On-line detecting and positioning device for local discharging of electrical insulated combined electrical appliance, and positioning method thereof |
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