CN111505457A - GIS partial discharge comprehensive online monitoring device - Google Patents
GIS partial discharge comprehensive online monitoring device Download PDFInfo
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- CN111505457A CN111505457A CN202010375530.XA CN202010375530A CN111505457A CN 111505457 A CN111505457 A CN 111505457A CN 202010375530 A CN202010375530 A CN 202010375530A CN 111505457 A CN111505457 A CN 111505457A
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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
- G01R31/1209—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 using acoustic measurements
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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
- G01R31/1263—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 of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1281—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 of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of liquids or gases
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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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- Testing Relating To Insulation (AREA)
Abstract
A GIS partial discharge comprehensive online monitoring device comprises: the device comprises a detection unit, a control unit, a power taking unit, a first cavity and a second cavity. The monitoring device determines the detection result on the basis of integrating the detection data of the plurality of sensors, most of false alarms can be eliminated by the judging mode, the troubleshooting times and workload of workers are reduced, and the device also sends the detection data to the upper computer through the communication module, so that the workers on the duty at the side of the upper computer can obtain alarm information at the first time. The device acquires the electric energy from GIS inner conductor through getting the electric unit, does not need external power supply to work, need not to increase the cable, need not destroy current GIS air chamber structure, makes things convenient for current equipment to reform transform. The device sets up the detecting element inside first cavity, and the top of adsorbent can realize that the decomposition gas detects earlier, and the back adsorbs, and than prior art, more can be accurate detect out the gaseous decomposition condition of GIS.
Description
Technical Field
The invention relates to the technical field of GIS partial discharge detection, in particular to a GIS partial discharge comprehensive online monitoring device.
Background
The center in the GIS is a conductor, the air chamber is filled with insulating gas, and a supporting insulator and a basin-type insulator are arranged in the GIS. In the operation process, the problems of corona discharge, surface discharge, cavity discharge, metal particle discharge and the like in the GIS can be caused by burrs on the conductor, metal particles in the gas chamber, suspension potential, defects on the insulator and the like. If SF6The gas has moisture, and the decomposed product reacts with the moisture to generate HF and SO during discharge2And the safe operation of the electrical equipment is seriously damaged.
Continuous partial discharge or intermittent partial discharge may occur inside the GIS. For continuous partial discharge, the worker can pass ultrasonic wave, ultrahigh frequency and SF at any time outside the GIS6Detecting the gas decomposition products; for intermittent partial discharge, it is difficult for a worker to detect the partial discharge outside the GIS, and particularly, the intensity of the partial discharge is low, the time interval between partial discharges is long, and the amount of generated decomposition products is small.
The current part of GIS is provided with SF6The gas comprehensive on-line monitoring device or the ultrahigh frequency partial discharge on-line monitoring device, and the document also proposes that two on-line monitoring devices are combined together to detect the GIS, and the on-line monitoring devices are poured on the basin-type insulator.
The ultrahigh frequency partial discharge online detection device has the defects that false alarm is easy to generate, partial discharge generated in a GIS is identified by utilizing electromagnetic waves generated by the partial discharge, the background electromagnetic waves are usually not pure due to the electromagnetic field environment around a GIS air chamber, if the interference of a mobile phone and wireless communication equipment is received, a GIS partial discharge comprehensive online monitoring device generates an alarm signal and needs manual on-site investigation and confirmation, and the trouble is often brought to an inspector due to the irreproducibility of intermittent partial discharge.
Applied composite SF partially used as technical reconstruction6In the case of gas detection, it is generally difficult to organically combine both, and the result is used as a criterion for comprehensive judgment. After false alarm is generated, the staff arrives at the site and synthesizes SF according to the alarm signal of the ultrahigh frequency partial discharge on-line monitoring device6And the gas detection data is checked, so that time and labor are wasted.
In addition, an adsorbent is generally installed inside the GIS, and when the generation of the decomposed gas is small, the decomposed gas is adsorbed before the detection, and it is difficult to verify the occurrence of the partial discharge phenomenon by the detection of the gas decomposed product outside the GIS. The prior art does not consider the presence of an adsorbent within a GIS gas cell in design.
The ultrahigh frequency method (UHF method) is a method in which an ultrahigh frequency signal sensor receives ultrahigh frequency electromagnetic waves radiated in a partial discharge process to detect partial discharge. The research considers that: each partial discharge of the transformer causes a positive and negative charge neutralization, accompanied by a steep current pulse, and electromagnetic waves are radiated to the surroundings. The test result shows that: the spectral characteristics of the electromagnetic waves radiated by the partial discharge are related to the geometry of the partial discharge source and the dielectric strength of the discharge gap. When the discharge gap is small, the discharge process time is short, the gradient of current pulse is large, and the capability of radiating high-frequency electromagnetic waves is strong; when the dielectric strength of the discharge gap is high, the breakdown process is fast, the gradient of the current pulse is high, and the capability of radiating high-frequency electromagnetic waves is high.
When the partial discharge occurs in a small range, the breakdown process is fast, a steep pulse current is generated, the rise time is less than 1ns, and electromagnetic waves with the frequency up to several GHz are excited. The broadband antenna (300 MHz-1.5GHz sensor) is used for detecting electromagnetic wave signals excited by partial discharge in the GIS, so that the type and the general position of the partial discharge in the GIS are reflected. Because the field corona interference is mainly concentrated below a 300MHz frequency band, the ultrahigh frequency method can effectively avoid the field corona interference and the like, has higher sensitivity and anti-interference capability, and can realize the advantages of partial discharge electrification detection, positioning, defect type identification and the like.
The partial discharge is accompanied by a burst-like acoustic emission, generates ultrasonic waves, and rapidly propagates to the surrounding medium. The ultrasonic wave (AD method) is generally a method in which an ultrasonic sensor attached to an outer wall of an electric power device (the ultrasonic sensor may be installed inside a GIS gas chamber if necessary) converts an ultrasonic signal into an electric signal, thereby measuring a partial discharge level of the device.
Disclosure of Invention
The invention provides a GIS partial discharge comprehensive online monitoring device which is used for reducing the frequency of false alarm of the existing GIS partial discharge online monitoring device.
The invention adopts the following technical scheme:
a GIS partial discharge comprehensive online monitoring device comprises: a detection unit and a control unit; the control unit is used for processing the signals acquired from the detection unit and sending the processed signals to an external upper computer; the control unit comprises a controller and a communication module; the detection unit includes: ultrahigh frequency sensor, ultrasonic sensor, HF component sensor, and SO2A component sensor; the ultrahigh frequency sensor, the ultrasonic sensor, the HF component sensor, and the SO2The composition sensor and the communication module are electrically connected to the controller, respectively.
Further, still get the electric unit including the induction, the induction is got the electric unit and is used for obtaining the electric energy and supply power for each power consumption unit from GIS inner conductor, the induction is got the electric unit and is included: current transformer, rectifier, wave filter, stabiliser, current transformer is used for obtaining the electric energy from the GIS inner conductor, the rectifier input with the current transformer output electricity is connected, the wave filter input with the rectifier output electricity is connected, the stabiliser input with the wave filter output electricity is connected, the stabiliser output is used for supplying power for each power consumption unit.
Further, the induction electricity-taking unit further comprises: the current transformer obtains electric energy from the GIS inner conductor and is insufficient to supply power for each power unit, the energy storage battery supplies power for each power unit, the charger input end is electrically connected with the voltage stabilizer output end, and the energy storage battery is electrically connected with the charger.
Further, still include: the upper surface of the first cavity is provided with an opening, the opening on the upper surface of the first cavity is communicated with a GIS air chamber, and an adsorbent is arranged in the first cavity; the adsorbent is disposed at a lower portion of the detection unit.
Further, still include: and the second cavity is communicated with the GIS air chamber and the first cavity respectively.
Furthermore, the second cavity is further provided with a circulating fan, the circulating fan is a brushless direct current heat dissipation fan, and the circulating fan is electrically connected with the controller.
Further, the detection unit further comprises a temperature sensor and a humidity sensor, and the temperature sensor and the humidity sensor are respectively electrically connected with the controller.
Further, the communication module is a WiFi communication module.
Further, the communication module is provided with an antenna, and the antenna is arranged on the surface of the first cavity.
Furthermore, the current transformer is provided with a current transformer iron core, the current transformer iron core is formed by combining a plurality of silicon steel sheets, and the current transformer iron core is grounded in a single point.
The invention has the following positive effects: a GIS partial discharge comprehensive online monitoring device comprises: detection unit, control unit, and detection unitThe method comprises the following steps: ultrahigh frequency sensor, ultrasonic sensor, HF component sensor, SO2A component sensor. Monitoring devices confirms the testing result on synthesizing the basis of above-mentioned sensor detected data, send out the police dispatch newspaper when confirming for partial discharge, use the GIS partial discharge of multiple sensor to synthesize online monitoring devices, can reduce most wrong reports under this decision mode, reduce staff's investigation number of times, alleviate work load, the device is still through communication module with detected data transmission to the host computer, make the staff of guard on duty by the host computer the very first time obtain alarm information, the initiative of equipment maintenance has been promoted, equipment trouble response time has been reduced.
The device still is equipped with gets the electric unit, gets the electric unit and acquires the electric energy through the GIS inner conductor to with partly electric energy storage in energy storage battery, energy storage battery does not need external power supply to work for this device power supply when the GIS inner conductor can not provide the electric energy, need not to increase the cable, need not destroy current GIS air chamber structure, makes things convenient for current equipment to reform transform.
The device still is equipped with first cavity and second cavity, sets up the detecting element inside first cavity, and the top of adsorbent can realize that the decomposition gas detects earlier, and the back adsorbs, and than prior art, more can be accurate detect out the GIS gas decomposition condition. The second cavity is provided with a circulating fan, and the fan accelerates the speed of air flow circulation in the GIS air chamber, so that the GIS gas decomposition condition can be reflected more quickly and accurately. The device passes through the wiFi module and establishes communication connection with the host computer, and communication module antenna setting is at first cavity internal surface, conveniently is connected with the host computer.
Drawings
FIG. 1 is a schematic front view of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic top view of the overall structure of an embodiment of the present invention;
FIG. 3 is a schematic diagram of a partial discharge diagnostic process according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a power-taking mode of a current transformer implemented in the present invention;
fig. 5 is a functional block diagram of an embodiment of the present invention.
In the figure: ultrahigh frequency sensor 1, HF component sensor 2, SO2The device comprises a component sensor 3, an antenna 5, a current transformer 6, an adsorbent 7, a first cavity 8, a second cavity 9, a circulating fan 10, a current transformer iron core 11, a conductor 12, an ultrasonic sensor 13, a temperature sensor 14 and a humidity sensor 15.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 to 5, a GIS partial discharge comprehensive online monitoring device includes: a detection unit and a control unit; the control unit is used for processing the signals acquired from the detection unit and sending the processed signals to an external upper computer; the control unit comprises a controller and a communication module; the detection unit includes: ultrahigh frequency sensor 1, ultrasonic sensor 13, HF component sensor 2, SO2A component sensor 3; ultrahigh frequency sensor 1, ultrasonic sensor 13, HF component sensor 2, SO2The component sensor 3 and the communication module are electrically connected to the controller, respectively.
The controller adopts a circuit which takes a single chip microcomputer with the model number of STM32F103C8T6 as a core, an AD converter and a serial port communication unit are integrated in the single chip microcomputer, and the highest clock dominant frequency of the single chip microcomputer can reach 72MHz and can be matched with the use requirements of people.
The ultrahigh frequency sensor 1 detects electromagnetic wave signals excited by partial discharge in the GIS by using a broadband antenna 5 (a 300MHz-1.5GHz sensor). According to different installation positions of the sensors, the method is divided into an internal method and an external method. The embodiment is a built-in method, the sensor captures electromagnetic waves generated by partial discharge in the GIS gas chamber through the broadband antenna 5, the controller performs analog-to-digital conversion on captured electromagnetic wave signals into processable digital signals, an amplitude method is applied to filter background noise electromagnetic waves, the part exceeding a threshold value is an effective signal, and different discharge types such as point discharge, suspension discharge, free metal discharge, surface discharge and internal discharge can be roughly judged through data processing of the single chip microcomputer.
The ultrasonic sensor 13 is arranged on the inner wall of the GIS air chamber, when partial discharge occurs in the GIS air chamber, the ultrasonic sensor 13 captures ultrasonic waves, the controller performs analog-to-digital conversion on captured ultrasonic signals, an amplitude method is applied, and the analog-to-digital conversion is compared with power frequency, for example, the power frequency is 50Hz, the discharge interval frequency can be calculated according to the ultrasonic peak value interval generated by two adjacent discharges, and when the ultrasonic peak value interval frequency is the same as the power frequency, the controller judges that corona discharge occurs; the single chip microcomputer can roughly judge different discharge types such as point discharge, suspension discharge and free metal discharge according to the prior art.
The final controller will integrate the signals from the UHF sensor 1, the ultrasonic sensor 13, the HF component sensor 2, and the SO2The data of the component sensor 3 is judged in the manner shown in FIG. 2, in which ≧ 1 is a logical OR relationship,&for the logic and relation, for point discharge, suspension discharge and free metal particle discharge, when one of the two detection modes of ultrasonic diagnosis and ultrahigh frequency diagnosis detects abnormity and a decomposed gas sensor detects a certain decomposed gas, the type of partial discharge can be determined to occur; otherwise, interference. Because the ultrasonic diagnosis can not detect the creeping discharge and the internal discharge, the internal discharge can not generate the decomposed gas, the creeping discharge sends out an alarm signal when the ultrahigh frequency diagnosis and the decomposed gas diagnosis find the abnormity, and the internal discharge sends out an alarm signal when the ultrahigh frequency diagnosis finds the abnormity. By this means can be arrangedAnd more interference is removed, and the detection accuracy is improved. After the partial discharge signal is determined, the controller can send data from each sensor to the upper computer through the communication module, and an attendant beside the upper computer can obtain alarm information at the first time to confirm and maintain the GIS equipment on site as necessary.
The GIS partial discharge comprehensive online monitoring device adopts an ultrahigh frequency sensor 1, an ultrasonic sensor 13, an HF component sensor 2 and SO2The mode that component sensor 3 combined together detects, confirm the testing result on synthesizing above-mentioned sensor detection data's basis, send out the police dispatch newspaper when confirming for partial discharge, can reduce most wrong report, reduce staff's investigation number of times, reduce work load, the device is still through communication module with detecting data transmission to the host computer, make the staff of guard on duty by the host computer very first time obtain alarm information, the initiative of equipment maintenance has been promoted, equipment trouble response time has been reduced.
Further, for reducing the device to external power source's dependence, still include the induction and get the electric unit, the induction is got the electric unit and is used for obtaining the electric energy from GIS inner conductor 12 and supply power for each power consumption unit, and the induction is got the electric unit and is included: the GIS power supply comprises a current transformer 6, a rectifier, a filter, a voltage stabilizer, a charger and an energy storage battery, wherein the current transformer 6 is used for obtaining electric energy from a GIS inner conductor 12, the input end of the rectifier is electrically connected with the output end of the current transformer 6, the input end of the filter is electrically connected with the output end of the rectifier, the input end of the voltage stabilizer is electrically connected with the output end of the filter, and the output end of the voltage stabilizer is used for supplying. The energy storage battery is used for supplying power for each power consumption unit when the electric energy acquired by the current transformer 6 from the GIS inner conductor 12 is insufficient to supply power for each power consumption unit, the input end of the charger is electrically connected with the output end of the voltage stabilizer, and the energy storage battery is electrically connected with the charger. More specifically, the current transformer iron core 11 is formed by combining a plurality of silicon steel sheets, and the current transformer iron core 11 is grounded in a single point.
The theory of operation, power module's induction coil utilizes faraday's electromagnetic induction theorem to obtain the electric energy from the magnetic field in the GIS, circulates alternating current's GIS inner conductor 12, can produce the magnetic field of reversal on every side, and the transformer core surrounds this alternating magnetic field, and the electromotive force of reversal can be inducted out at the transformer coil both ends:
the magnetic induction at a point outside the conductor 12 is:
B=（սI）/（2πa）
where ս is the magnetic permeability of the core, I is the current flowing through the conductor 12, a is the distance from a point in space to the axis of the conductor 12, and B is the magnetic induction at that point. The electromotive force generated at the two ends of the transformer coil is:
E=（N*dΦ）/dt=（N*S*dB）/dt
in the formula, N is the number of turns of the transformer coil, phi is the magnetic flux in the transformer coil, S is the area of the single-turn induction coil, and t is time.
Alternating current obtained by the current transformer 6 is rectified and filtered to be smooth direct current voltage, and then the voltage is stabilized to supply power for each power utilization unit.
The application is based on the fact that the current I of the conductor 12 for generating the alternating magnetic field is sufficiently large to supply the individual consumers with energy from the energy storage battery, for example in the event of a power failure or in the valley of a power supply. When the current transformer 6 works normally, one path supplies power to each power utilization unit through the voltage stabilizing module, and the other path charges the energy storage battery through the voltage stabilizing module and the charging module.
GIS partial discharge comprehensive on-line monitoring device with get electric unit acquires the electric energy from GIS inner conductor 12, need not external power supply can work, need not to increase the cable, need not destroy current GIS air chamber structure, makes things convenient for current equipment to reform transform.
Furthermore, the device is also provided with a first cavity 8 and a second cavity 9, the upper surface of the first cavity 8 is provided with an opening, the opening on the upper surface of the first cavity 8 is communicated with a GIS air chamber, and an adsorbent 7 is arranged inside the first cavity 8; the detection unit is arranged on the inner surface of the first cavity 8 and on the upper part of the adsorbent 7.
The upper surface of the second cavity 9 is provided with an opening, the upper surface opening of the first cavity 8 is communicated with the GIS air chamber, the lower sides of the first cavity 8 and the second cavity 9 are provided with openings, and the first cavity 8 and the second cavity 9 are communicated with each other through the lower sides. A circulating fan 10 is arranged in the second cavity 9 close to the opening on the upper surface, the circulating fan 10 is a brushless direct current heat dissipation fan, and the circulating fan 10 is electrically connected with the controller.
The detection unit is also provided with a temperature sensor 14 and a humidity sensor 15, the temperature sensor 14 and the humidity sensor 15 are respectively electrically connected with the controller, and the temperature sensor 14 and the humidity sensor 15 are both arranged on the upper portion of the adsorbent and inside the first cavity 8.
During the working process, after partial discharge is generated, the ultrahigh frequency sensor 1 and the ultrasonic sensor can sense the partial discharge at the first time, detected signals are transmitted to the controller, the controller immediately starts the circulating fan 10, gas in the GIS gas chamber passes through the first cavity 8 and the second cavity 9, and the HF component sensor 2 and the SO component sensor 2 are used for accelerating the flowing of the gas flow due to the fact that the circulating fan 10 accelerates the flowing of the gas flow2The sensors, the temperature sensor 14 and the humidity sensor 15 can acquire the detection data more quickly, after a period of time of detection, the circulating fan 10 is turned off, the controller reads the data of the sensors in the period of time, and then the controller can determine whether the partial discharge occurs or not through judgment.
With the detecting element setting inside first cavity 8, be located the top of adsorbent 7, can realize that the decomposition gas detects earlier, the back adsorbs, and than prior art, more can be accurate detect out the gaseous decomposition condition of GIS. The device still is equipped with the second cavity 9 with 8 intercommunications of first cavity, and second cavity 9 still is equipped with circulating fan 10 for the speed of the inside air current circulation of GIS air chamber, thereby reach the gaseous decomposition condition of reflecting GIS more fast more accurately.
Further, the communication module is a WiFi communication module, and the communication module antenna 5 is disposed on the inner surface of the first cavity 8.
As we know, the GIS air chamber shell is mostly made of metal, and the metal has a strong shielding effect on radio signals, so that the WiFi communication module with the antenna 5 arranged on the inner surface of the first cavity 8 is adopted. WiFi communication module adopts the wireless electromagnetic wave to transmit signals, has removed the vexation of connecting data transmission line from, only needs during the use to pair at host computer and WiFi module, can carry out data transmission, facilitates the use.
The embodiments described above are only preferred embodiments of the invention and are not exhaustive of the possible implementations of the invention. Any obvious modifications to the above would be obvious to those of ordinary skill in the art, but would not bring the invention so modified beyond the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a GIS partial discharge synthesizes on-line monitoring device which characterized in that includes: a detection unit and a control unit;
the control unit is used for processing the signals acquired from the detection unit and sending the processed signals to an external upper computer;
the control unit comprises a controller and a communication module;
the detection unit includes: ultrahigh frequency sensor (1), ultrasonic sensor (13), HF component sensor (2), and SO2A component sensor (3); the ultrahigh frequency sensor (1), the ultrasonic sensor (13), the HF component sensor (2), and the SO2The composition sensor (3) and the communication module are electrically connected with the controller respectively.
2. The GIS partial discharge comprehensive online monitoring device according to claim 1, further comprising an induction electricity taking unit, wherein the induction electricity taking unit is used for obtaining electric energy from a GIS inner conductor (12) to supply power for each electricity taking unit, and comprises: current transformer (6), rectifier, wave filter, stabiliser, current transformer (6) are used for obtaining the electric energy from GIS inner conductor (12), the rectifier input with current transformer (6) output electricity is connected, the wave filter input with the rectifier output electricity is connected, the stabiliser input with the wave filter output electricity is connected, the stabiliser output is used for supplying power for each power consumption unit.
3. The GIS partial discharge comprehensive online monitoring device according to claim 2, wherein the induction electricity taking unit further comprises: the current transformer (6) obtains electric energy from the GIS inner conductor (12) when the electric energy is insufficient to supply power for each power unit, the energy storage battery supplies power for each power unit, the charger input end is electrically connected with the voltage stabilizer output end, and the energy storage battery is electrically connected with the charger.
4. The GIS partial discharge comprehensive online monitoring device according to claim 3, further comprising: the gas-liquid separator comprises a first cavity (8), wherein an opening is formed in the upper surface of the first cavity (8), the opening in the upper surface of the first cavity (8) is communicated with a GIS gas chamber, and an adsorbent (7) is arranged in the first cavity (8); the adsorbent (7) is disposed at a lower portion of the detection unit.
5. The GIS partial discharge comprehensive online monitoring device according to claim 4, further comprising: and the second cavity (9), the second cavity (9) is respectively communicated with the GIS air chamber and the first cavity (8).
6. The GIS partial discharge comprehensive online monitoring device according to claim 5, wherein the second cavity (9) is further provided with a circulating fan (10), the circulating fan (10) is a brushless direct current cooling fan, and the circulating fan (10) is electrically connected with the controller.
7. The GIS partial discharge comprehensive online monitoring device according to claim 6, wherein the detection unit further comprises a temperature sensor (14) and a humidity sensor (15), and the temperature sensor (14) and the humidity sensor (15) are respectively electrically connected with the controller.
8. The GIS partial discharge comprehensive online monitoring device according to claim 7, wherein the communication module is a WiFi communication module.
9. The GIS partial discharge comprehensive online monitoring device according to claim 8, wherein the communication module is provided with an antenna (5), and the antenna (5) is arranged on the surface of the first cavity (8).
10. The GIS partial discharge comprehensive online monitoring device according to claim 9, wherein the current transformer is provided with a current transformer iron core (11), the current transformer iron core (11) is formed by combining a plurality of silicon steel sheets, and the current transformer iron core (11) is grounded in a single point.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117110819A (en) * | 2023-10-18 | 2023-11-24 | 清华大学深圳国际研究生院 | Gas insulation strength testing device |
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