CN116113208B - Integrated active arc extinction and resonance elimination intervention device - Google Patents
Integrated active arc extinction and resonance elimination intervention device Download PDFInfo
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- CN116113208B CN116113208B CN202211729399.8A CN202211729399A CN116113208B CN 116113208 B CN116113208 B CN 116113208B CN 202211729399 A CN202211729399 A CN 202211729399A CN 116113208 B CN116113208 B CN 116113208B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0092—Details of emergency protective circuit arrangements concerning the data processing means, e.g. expert systems, neural networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20181—Filters; Louvers
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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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
Abstract
The invention relates to the technical field of fault diagnosis, and discloses an integrated novel active arc extinction and resonance extinction intervention system, which comprises the following components in part by weight; a host configured to: according to the change condition of each phase voltage and zero sequence voltage when the fault occurs, judging the criterion of the phase and grounding attribute of the ground fault, converting arc grounding into metal grounding in ms when arc grounding occurs in the system, and actively intervening the system, wherein the active intervening system is configured as follows: through monitoring distribution network overvoltage, record trouble waveform and quick trouble type when distribution network system breaks down to throw into arc extinction resonance elimination device fast and consume resonance energy, trouble information communication module is configured as: and receiving the power distribution network data information monitored by the active intervention system. The novel active arc extinction harmonic elimination intervention system and the intervention device have good ventilation capability, can operate for a long time on line, also have a self-cleaning function, and are compact in structure, strong in fault studying and judging capability and high in fault line selection accuracy.
Description
Technical Field
The invention relates to the technical field of fault diagnosis, in particular to an integrated novel active arc extinction and resonance extinction intervention system and an intervention device.
Background
The frequently-occurring overvoltage of the distribution network such as arc grounding, ferromagnetic resonance and the like is one of the main reasons for causing serious accidents such as power failure accidents, explosion, switch cabinet fire, cable breakdown and the like of a transformer substation in a power system area. The traditional solution thinking is to add an arc suppression coil (arc suppression cabinet), and the main defects are that firstly, the fault line identification accuracy is low, secondly, the adaptability is poor, the device parameters are set off-line, the device parameters are difficult to adapt to the rapid changes of the system capacity and the operation mode, at present, the overvoltage theory research of the power distribution network at home and abroad is more, the overvoltage theory comprises lightning overvoltage, operation overvoltage, arc overvoltage and resonance overvoltage, the treatment measures are more and miscellaneous, for example, an arrester, an arc suppression coil, a pressure-sensitive primary harmonic eliminator and the like are added, the treatment measures are single and dispersed, and the treatment measures are all passive treatment and post treatment.
At present, the existing resonance elimination and arc extinction device is arranged in a split mode, cannot adapt to a transformer substation design mode with increasingly compact occupied area, and is high in long-time online operation failure rate.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides an integrated novel active arc extinction and harmonic extinction intervention system and an intervention device, which have the advantages of good ventilation capability, long-time on-line operation, self-cleaning function, compact structure, strong fault studying and judging capability, high fault line selection accuracy and the like, and solve the problems that the existing arc extinction and harmonic extinction device is arranged in a split mode, cannot adapt to a transformer substation design mode with increasingly compact occupied area and has high fault rate during long-time on-line operation.
(II) technical scheme
In order to achieve the above purpose, the present invention provides the following technical solutions: novel initiative arc extinction of integral type is transferred and is intervene system includes:
a host configured to: judging the phase and grounding attribute criteria of the ground fault according to the change conditions of each phase voltage and zero sequence voltage when the fault occurs, and converting arc grounding into metal grounding within 40ms when the arc grounding occurs to the system;
an active intervention system configured to: by monitoring the overvoltage of the power distribution network, recording the fault waveform and the rapid fault type when the power distribution network system fails, and rapidly putting into an arc extinction and resonance elimination device to consume resonance energy;
the fault information communication module is configured to: and receiving the power distribution network data information monitored by the active intervention system, directly displaying the power distribution network data information through a display module, and directly feeding back the power distribution network fault information to a receiving terminal through a feedback module.
Preferably, a fault monitoring module, a fault judging module, a fault positioning module and a fault recording module are arranged in the active intervention system;
the fault monitoring module monitors the change condition of each phase voltage and zero sequence voltage when a single-phase grounding fault occurs according to the detuning degree of the arc suppression coil input and the passive regulation problem when the single-phase grounding fault occurs, and judges the criterion of grounding fault occurrence phase and grounding attribute;
the fault judging module realizes the reliability and flexibility of fault line selection of the low-current grounding system by comprehensively utilizing the fault characteristics of the fault judging module and fusing a plurality of single-criterion line selection methods through an information fusion technology, the high-frequency modal energy method has high accuracy when a fault phase angle is relatively large, the attenuated direct current component method has high accuracy when the fault phase angle is small and the 5 th harmonic component method realizes line selection by utilizing a correlation analysis theory, and the three methods are intelligently fused by establishing a fault measure membership function and a research and development method weight coefficient membership function and utilizing a fuzzy theory to realize multi-criterion fusion so as to realize the original line selection;
the fault positioning module adopts a double-end traveling wave method to detect initial traveling waves generated by faults at two ends of a line, and obtains a fault distance through calculation by utilizing the time difference and the wave speed of the traveling waves reaching the two ends;
the fault recording module is used for recording data of the fault monitoring module, the fault judging module and the fault positioning module when the power distribution network system breaks down.
Preferably, the research of a fuzzy theory-based multiple criterion line selection algorithm is used for realizing data fusion of three basic line selection methods, namely a high-frequency modal method, an attenuation direct-current component method and a 5 th harmonic component method, constructing a membership function of line selection according to the characteristic that zero sequence currents of a sound line and a fault line of a system are different, and realizing line selection by carrying out information fusion according to comprehensive criteria.
The invention also provides an integrated novel active arc-extinguishing and resonance-extinguishing intervention device, which comprises a box body, a host, a display and an arc-extinguishing and resonance-extinguishing device, wherein the box body is fixedly connected with a mounting plate, and the host, a feedback module and a fault communication module are all arranged on the side wall of the mounting plate;
a square frame is fixedly connected to one side of the box body, an air guide mechanism is arranged in the square frame, a sewage outlet matched with the air guide mechanism is formed in the upper end of the box body, an air guide cover is fixedly connected to the sewage outlet, and the air guide mechanism is used for forcedly introducing filtered air into the box body and can automatically clean the air guide mechanism;
the front side of box is equipped with the opening, and the opening part is equipped with the closing plate, the four corners department of closing plate has all cup jointed the bolt through the through-hole, and the one end of bolt is passed through the through-hole and threaded connection has the nut, the inner wall at the box is fixed to the nut, the rear side of closing plate and box all is equipped with the air exit, and air exit department fixedly connected with separates the net.
Preferably, the mounting plate is formed by bending for many times, the side wall of the sealing plate is provided with a clamping groove, the clamping groove is matched with the edge of one end of the mounting plate, the mounting plate is arranged between the sealing plate and the box body, and an air passage is formed in the box body in a separated mode.
Preferably, the wind guiding mechanism comprises a transverse plate and a vertical plate, one end of the vertical plate is fixedly connected with the transverse plate, the other end of the vertical plate is fixedly connected with the inner wall of the square frame, the side wall of the transverse plate is rotationally connected with two transverse shafts through bearings, two of the transverse shafts are fixedly connected with fan blades, the side wall of the vertical plate is fixedly connected with a motor through a fixing frame, the output end of the motor is fixedly connected with a first belt wheel, the side wall of the first belt wheel is in a winding connection with a belt, two second belt wheels are in a winding connection in the belt, the two second belt wheels are respectively fixedly connected with one ends of the two transverse shafts, the square frame is in an inclined fixedly connected with a filter plate, and one side of the filter plate is provided with a dust removing unit.
Preferably, the ash removal unit includes two reciprocating screw rods, two the relative one end of reciprocating screw rods is fixedly connected with worm wheel jointly, two the one end that reciprocating screw rods are opposite to each other is all rotated through the inner wall of bearing and square frame and is connected with the slider on the pole wall of reciprocating screw rods, the one end of slider is through connecting rod fixedly connected with scrubbing brush, and scrubbing brush contacts with one side of filter, one side fixedly connected with support frame of riser, one side of support frame is rotated through the bearing and is connected with the worm, worm and worm wheel meshing, one side fixedly connected with first integral key shaft of first band pulley, first integral key shaft is connected with the worm through linkage subassembly.
Preferably, the linkage assembly comprises a second spline shaft, the second spline shaft is fixedly connected with one end of the worm, a spline gauge is sleeved on the shaft wall of the second spline shaft, one end of the spline gauge is matched with the shaft wall of the first spline shaft, a plurality of uniformly distributed permanent magnets are fixedly connected to the side wall of the spline gauge, two electromagnets are symmetrically and fixedly connected to the side wall of the support frame, and the electromagnets are located on one side of the permanent magnets.
Preferably, the protection network is fixedly connected with an opening at one end of the square frame, a rectangular opening is formed in one side of the square frame, a groove is formed in one side of the rectangular opening, a baffle is arranged in the groove, a cross rod is fixedly connected with one side of the baffle, an electric push rod is fixedly connected with one side of the vertical plate, and the output end of the electric push rod is fixedly connected with one end of the cross rod.
(III) beneficial effects
Compared with the prior art, the invention provides an integrated novel active arc extinction and resonance extinction intervention system and an intervention device, which have the following beneficial effects:
1. the fault line selection method of high-frequency modal energy, the fault line selection method of 5 th harmonic components and the fault line selection method of attenuation direct current components are intelligently fused, so that multi-criterion fusion fault line selection based on a fuzzy theory is realized, the double-end traveling wave method is adopted to detect initial traveling waves generated by faults at the double ends of the line, the fault distance is obtained through calculation by utilizing the time difference and the wave velocity of the traveling waves reaching the double ends, the timely repair of the fault line can be facilitated, the loss caused by power failure is reduced, and the difficulty and the elegance of manual line inspection are reduced.
2. When the device is used, in order to ensure long-time operation of the device, the air guide mechanism is started to forcedly guide filtered air into the box body, the air entering the box body flows in an air passing channel formed by the mounting plates, and finally the air is discharged from the sealing plate and the air outlet on the box body, so that heat in the box body can be rapidly discharged, the device can be operated on a net for a long time, meanwhile, the ash removal mechanism arranged in the air guide mechanism can realize online ash removal on the air guide mechanism, so that dust on the filter plate arranged in the air guide mechanism is rapidly discharged, and the influence of the dust on the permeability of the filter plate is avoided.
3. When the air guide mechanism is used, the motor is started, the belt is driven by the first belt wheel to rotate, the second belt wheel is driven by the rotation of the transverse shaft, the air flow in the square frame is pushed by the rotation of the transverse shaft to drive the fan blades to rotate, at the moment, the air flow flows through the air passage to take away heat generated by working of all electrical components in the box body, when dust needs to be cleaned, the electric push rod is started to push the cross rod to move the baffle, the rectangular opening is communicated with the sewage outlet arranged on the box body after the baffle moves, and the air flow is blocked by the filter plate to a certain extent, so that the air quantity discharged from the rectangular opening and the sewage outlet is greater than that discharged through the filter plate, the dust is carried by the air flow and discharged through the rectangular opening and the sewage outlet, so that the dust cleaning effect can be achieved, and the air passing through the filter plate also enters the air passage to take away the heat in the box body, so that the dust on the filter plate can be cleaned online, and the heat dissipation effect of the intervention device is ensured.
4. In order to improve the ash removing efficiency, the electromagnetic is started to generate magnetism, the magnetism is identical to one magnetic pole of the permanent magnet block, the repulsive force is generated, the spline gauge slides on the second spline shaft and is meshed with the first spline shaft, linkage between the worm and the first belt wheel is further realized, the worm drives the worm wheel to enable the reciprocating screw rod to rotate after linkage, the sliding block is driven to enable the scrubbing brush to move when the reciprocating screw rod rotates, dust on the surface of the filtering plate can be brushed when the scrubbing brush reciprocates, and the air guide mechanism can be assisted to improve the ash removing efficiency.
Drawings
FIG. 1 is a schematic diagram of an integrated novel active arc extinction and resonance extinction intervention device;
fig. 2 is a schematic diagram of the internal structure of a box body in the integrated novel active arc extinction and resonance extinction intervention device;
fig. 3 is a schematic structural diagram of a box body and a mounting plate in the integrated novel active arc extinction and resonance extinction intervention device;
FIG. 4 is a schematic structural diagram of a rear view of a sealing plate in the integrated novel active arc extinction and resonance extinction intervention device;
fig. 5 is a schematic structural diagram of an air guiding mechanism in the integrated novel active arc extinction and resonance extinction intervention device;
fig. 6 is a schematic structural diagram of an ash removing unit in the integrated novel active arc extinction and resonance extinction intervention device;
fig. 7 is a schematic structural diagram of a spline gauge, a first spline shaft and a second spline shaft in the integrated novel active arc extinction and resonance extinction intervention device;
FIG. 8 is a block diagram of an integrated novel active arc extinction and resonance extinction intervention system according to the present invention
Fig. 9 is a flowchart of a fault judging process in the integrated novel active arc extinction and resonance extinction intervention system.
In the figure: 1. a case; 2. a sealing plate; 3. a screen; 4. a protective net; 5. a wind scooper; 6. a mounting plate; 7. a display; 8. a nut; 9. a host; 10. a first spline shaft; 11. a wind passage; 12. a block; 13. arc extinction and resonance elimination device; 14. a clamping groove; 15. an electric push rod; 16. a riser; 17. a fixing frame; 18. a motor; 19. a first pulley; 20. a belt; 21. a second pulley; 22. a fan blade; 23. a cross plate; 24. a reciprocating screw rod; 25. a filter plate; 26. a scrubber; 27. a cross bar; 28. a baffle; 29. a groove; 30. a slide block; 31. a worm; 32. a worm wheel; 33. permanent magnet blocks; 34. a second spline shaft; 35. a spline gauge; 36. an electromagnet.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1:
referring to fig. 8-9, an integrated novel active arc and resonance extinguishing intervention system comprises:
a host 9 configured to: according to the change condition of each phase voltage and zero sequence voltage when faults occur, judging the ground fault occurrence phase and ground attribute criteria, converting arc grounding into metal grounding within 40ms when arc grounding occurs in the system, actively intervening the system, recording fault waveforms and quick fault types when the power distribution network system fails by monitoring overvoltage of the power distribution network, rapidly throwing an arc extinction and resonance elimination device 13 to consume resonance energy, receiving power distribution network data information monitored by the active intervening system, directly displaying the power distribution network data information through a display module, directly feeding back the power distribution network fault information to a receiving terminal through a feedback module, and arranging a fault monitoring module, a fault judging module, a fault positioning module and a fault recording module in the active intervening system;
aiming at the problems of detuning degree and passive regulation of arc suppression coil investment when single-phase grounding faults occur, the fault monitoring module monitors the change condition of each phase voltage and zero sequence voltage when the faults occur and judges the criterion of the occurrence phase and grounding attribute of the grounding faults;
the fault judging module realizes the reliability and flexibility of fault line selection of the small-current grounding system by comprehensively utilizing the fault characteristics of the fault judging module and fusing a plurality of single-criterion line selection methods through an information fusion technology, the high-frequency modal energy method has high accuracy when a fault phase angle is relatively large, the attenuated direct-current component method has high accuracy when the fault phase angle is relatively small, and the 5-order harmonic component method realizes line selection by utilizing a correlation analysis theory, and the three methods are intelligently fused by establishing a fault measure membership function and a research and development method weight coefficient membership function and utilizing a fuzzy theory to realize multi-criterion fusion so as to realize the original line selection;
the fault location module adopts a double-end traveling wave method to detect initial traveling waves generated by faults at two ends of a line, and obtains fault distances through calculation by utilizing time difference and wave speed of the traveling waves reaching the two ends, wherein the fault location of the distribution line comprises two contents, namely, determining electric distances from a fault point to an observation point (line start), determining branch lines where the fault point is located, determining the electric distances of the fault, wherein reflection processes of the traveling waves at nodes before the fault point are consistent with normal conditions, reflection different from normal conditions at the fault point occurs, so that reflection waves of the fault condition are compared, a waveform difference point with the same polarity as an injection pulse is necessarily reflection waves of the fault point, namely, fault characteristic waves, the electric distances of the fault point from the observation point can be calculated according to the following formula, determining wave speed of the fault branches at the moment of the fault characteristic waves, comparing reflection waves of the normal conditions and the fault condition, certain branch faults inevitably cause node characteristic waves of the branch and the sub-branch to change, the rest node characteristic waves are unchanged, as shown in fig. 2, when the fault point is F, the characteristic waves of the node A, D are not changed, and if the characteristic waves of the node A, D are not connected with the ground node 3884 are lost, if the node 3884 is lost, and the amplitude is reduced. The branching line which occurs can be determined from the change in the characteristic wave;
the fault recording module is used for recording data of the fault monitoring module, the fault judging module and the fault positioning module when the power distribution network system breaks down.
The method is based on the research of fuzzy theory multiple criterion line selection algorithm, realizes data fusion of three basic line selection methods of a high-frequency mode method, an attenuation direct-current component method and a 5 th harmonic component method, constructs a membership function of line selection according to the different characteristics of zero sequence currents of a sound line and a fault line of the system, and realizes line selection by information fusion according to comprehensive criteria.
When the method is used, the fault line selection method based on the fuzzy theory is realized by intelligently fusing the fault line selection method of high-frequency modal energy, the fault line selection method of 5 th harmonic components and the fault line selection method of attenuation direct current components, the double-end traveling wave method is adopted to detect initial traveling waves generated by faults at the double ends of the line, the fault distance is obtained through calculation by utilizing the time difference and the wave speed of the traveling waves reaching the double ends, and the rapid and accurate fault positioning method can be beneficial to timely repairing the fault line, reduce the loss caused by power failure and lighten the difficulty of manual line inspection.
Example 2;
referring to fig. 1-7, the invention provides an integrated novel active arc extinction and resonance elimination intervention device, which comprises a box body 1, a host machine 9, a display 7 and an arc extinction and resonance elimination device 13, wherein a mounting plate 6 is fixedly connected in the box body 1, the host machine 9, a feedback module and a fault communication module are all arranged on the side wall of the mounting plate 6, the mounting plate 6 is formed by bending for many times, a clamping groove 14 is formed in the side wall of a sealing plate 2, the clamping groove 14 is matched with the edge of one end of the mounting plate 6, the mounting plate 6 is arranged between the sealing plate 2 and the box body 1, the interior of the box body 1 is divided into an air passage 11, one side of the box body 1 is fixedly connected with a box frame 12, a ventilation and air guide mechanism is arranged in the box 12, the upper end of the box body 1 is provided with a sewage outlet matched with the air guide mechanism, the sewage outlet is fixedly connected with an air guide cover 5, and the air guide mechanism is used for forcedly introducing filtered air into the box body 1 and can realize automatic ash removal of the air guide mechanism;
the front side of box 1 is equipped with the opening, and the opening part is equipped with closing plate 2, and the four corners department of closing plate 2 has all cup jointed the bolt through the through-hole, and the one end of bolt is passed through the through-hole and threaded connection has nut 8, and nut 8 is fixed at the inner wall of box 1, and the rear side of closing plate 2 and box 1 all is equipped with the air exit, and air exit department fixedly connected with separates net 3.
The invention is provided with the intervention device, when the device runs for a long time, the air guide mechanism is started to forcedly introduce the filtered air into the box body 1, the air entering the box body 1 flows in one air passing channel 11 formed by the mounting plate 6, and finally the air is discharged from the sealing plate 2 and the air outlet on the box body 1, so that the heat in the box body 1 can be rapidly discharged, the device can run on a net for a long time, meanwhile, the ash removing mechanism arranged in the air guide mechanism can realize online ash removing on the air guide mechanism, and dust on the filter plate 25 arranged in the air guide mechanism is rapidly discharged, so that the dust is prevented from affecting the permeability of the filter plate 25.
Example 3: the difference is based on example 1;
referring to fig. 2-5, the wind guiding mechanism comprises a transverse plate 23 and a vertical plate 16, one end of the vertical plate 16 is fixedly connected with the transverse plate 23, the other end of the vertical plate 16 is fixedly connected with the inner wall of the square frame 12, the side wall of the transverse plate 23 is rotationally connected with two transverse shafts through bearings, one ends of the two transverse shafts are fixedly connected with fan blades 22, the side wall of the vertical plate 16 is fixedly connected with a motor 18 through a fixing frame 17, the output end of the motor 18 is fixedly connected with a first belt wheel 19, the side wall of the first belt wheel 19 is in a wound connection with a belt 20, two second belt wheels 21 are in a wound connection with the belt 20, the two second belt wheels 21 are respectively fixedly connected with one ends of the two transverse shafts, a filter plate 25 is obliquely and fixedly connected with one side of the square frame 12, an ash removing unit is arranged on one side of the filter plate 25, a protective net 4 is fixedly connected with one side of the square frame 12, a rectangular opening is provided with a groove 29, a baffle 28 is arranged in the groove 29, one side of the baffle 28 is fixedly connected with a cross rod 27, one side of the vertical plate 16 is fixedly connected with an electric push rod 15, and the output end of the electric push rod 15 is fixedly connected with one end of the cross rod 27.
When the air guide mechanism is used, the motor 18 is started, the belt 20 is driven by the first belt pulley 19 to rotate, the second belt pulley 21 is driven by the rotation of the transverse shaft to rotate, the air flow in the square frame 12 is driven by the rotation of the transverse shaft to push the fan blades 22 to move through the air passage 11, heat generated when all electric elements in the box body 1 work is taken away by the air flow, when dust needs to be cleaned, the electric push rod 15 is started to push the cross rod 27 to move the baffle 28, the rectangular opening is communicated with the sewage outlet formed in the box body 1 after the baffle 28 moves, and the air flow is blocked by the filter plate 25 to a certain extent, so that the air quantity discharged from the rectangular opening and the sewage outlet is larger than the air quantity discharged through the filter plate 25, the air flow is entrained with the dust to be discharged through the rectangular opening and the sewage outlet, the dust cleaning effect can be achieved, and the air passing through the filter plate 25 also enters into the air passage 11 to take away the heat in the box body 1, so that the dust on the filter plate 25 can be cleaned online, and the heat dissipation effect on the intervention device is ensured.
Example 4: the difference is based on example 1;
referring to fig. 5-7, the ash removal unit comprises two reciprocating screw rods 24, one ends of the two opposite reciprocating screw rods 24 are fixedly connected with a worm wheel 32 together, one ends of the two opposite reciprocating screw rods 24 are rotatably connected with the inner wall of the square frame 12 through bearings, the rod wall of the reciprocating screw rod 24 is connected with a sliding block 30, one end of the sliding block 30 is fixedly connected with a scrubbing brush 26 through a connecting rod, the scrubbing brush 26 contacts with one side of the filter plate 25, one side of the vertical plate 16 is fixedly connected with a supporting frame, one side of the supporting frame is rotatably connected with a worm 31 through a bearing, the worm 31 is meshed with the worm wheel 32, one side of the first belt wheel 19 is fixedly connected with a first spline shaft 10, and the first spline shaft 10 is connected with the worm 31 through a linkage assembly;
the linkage assembly comprises a second spline shaft 34, the second spline shaft 34 is fixedly connected with one end of a worm 31, a spline gauge 35 is sleeved on the shaft wall of the second spline shaft 34, one end of the spline gauge 35 is matched with the shaft wall of the first spline shaft 10, a plurality of uniformly distributed permanent magnet blocks 33 are fixedly connected to the side wall of the spline gauge 35, two electromagnets 36 are symmetrically and fixedly connected to the side wall of the support frame, and the electromagnets 36 are located on one side of the permanent magnet blocks 33.
In order to improve the ash removing efficiency, the invention is provided with the ash removing unit, the electromagnet 36 is started to generate magnetism, the magnetism is the same as one magnetic pole of the permanent magnet 33, repulsive force is generated, the spline gauge 35 slides on the second spline shaft 34 and is then meshed with the first spline shaft 10, so that the linkage between the worm 31 and the first belt wheel 19 is realized, the worm 31 drives the worm wheel 32 to rotate the reciprocating screw 24 after linkage, the sliding block 30 is driven to move the scrubbing brush 26 when the reciprocating screw 24 rotates, and dust on the surface of the filtering plate 25 can be brushed when the scrubbing brush 26 reciprocates, so that the ash removing efficiency can be improved by the auxiliary air guide mechanism.
It should be noted that the term "comprises," "comprising," or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. Novel active arc extinction of integral type is harmonic elimination intervention device, including box (1), host computer (9), display (7) and arc extinction harmonic elimination device (13), its characterized in that: the box body (1) is internally and fixedly connected with a mounting plate (6), and the host (9), the feedback module and the fault communication module are all arranged on the side wall of the mounting plate (6);
a square frame (12) is fixedly connected to one side of the box body (1), an air guide mechanism is arranged in the square frame (12), a sewage outlet matched with the air guide mechanism is formed in the upper end of the box body (1), an air guide cover (5) is fixedly connected to the sewage outlet, and the air guide mechanism is used for forcedly introducing filtered air into the box body (1) and can automatically clean ash;
the air guide mechanism comprises a transverse plate (23) and a vertical plate (16), one end of the vertical plate (16) is fixedly connected with the transverse plate (23), the other end of the vertical plate (16) is fixedly connected with the inner wall of a square frame (12), the side wall of the transverse plate (23) is rotatably connected with two transverse shafts through bearings, one ends of the transverse shafts are fixedly connected with fan blades (22), the side wall of the vertical plate (16) is fixedly connected with a motor (18) through a fixing frame (17), the output end of the motor (18) is fixedly connected with a first belt pulley (19), the side wall of the first belt pulley (19) is in a winding connection with a belt (20), two second belt pulleys (21) are in winding connection with one ends of the two transverse shafts respectively, a filter plate (25) is obliquely and fixedly connected in the square frame (12), and one side of the filter plate (25) is provided with an ash removing unit;
the ash removal unit comprises two reciprocating screw rods (24), one ends, opposite to the reciprocating screw rods (24), of the two reciprocating screw rods are fixedly connected with worm wheels (32) together, one ends, opposite to the reciprocating screw rods (24), of the two reciprocating screw rods are rotatably connected with the inner wall of the square frame (12) through bearings, sliding blocks (30) are connected to the rod walls of the reciprocating screw rods (24), one ends of the sliding blocks (30) are fixedly connected with scrubbing brushes (26) through connecting rods, the scrubbing brushes (26) are contacted with one side of the filter plates (25), one side of each vertical plate (16) is fixedly connected with a supporting frame, one side of each supporting frame is rotatably connected with a worm (31) through bearings, the worm (31) is meshed with the worm wheels (32), one side of each first belt wheel (19) is fixedly connected with a first spline shaft (10), and the first spline shaft (10) is connected with the worm (31) through a linkage assembly;
the linkage assembly comprises a second spline shaft (34), the second spline shaft (34) is fixedly connected with one end of a worm (31), a spline gauge (35) is sleeved on the shaft wall of the second spline shaft (34), one end of the spline gauge (35) is matched with the shaft wall of the first spline shaft (10), a plurality of uniformly distributed permanent magnets (33) are fixedly connected to the side wall of the spline gauge (35), two electromagnets (36) are symmetrically and fixedly connected to the side wall of the support frame, and the electromagnets (36) are located on one side of the permanent magnets (33);
the protective net (4) is fixedly connected to an opening at one end of the square frame (12), a rectangular opening is formed in one side of the square frame (12), a groove (29) is formed in one side of the rectangular opening, a baffle (28) is arranged in the groove (29), a cross rod (27) is fixedly connected to one side of the baffle (28), an electric push rod (15) is fixedly connected to one side of the vertical plate (16), and the output end of the electric push rod (15) is fixedly connected with one end of the cross rod (27);
the front side of box (1) is equipped with the opening, and the opening part is equipped with closing plate (2), the four corners department of closing plate (2) has all cup jointed the bolt through the through-hole, and the one end of bolt passes through-hole and threaded connection has nut (8), the inner wall at box (1) is fixed to nut (8), the rear side of closing plate (2) and box (1) all is equipped with the air exit, and air exit department fixedly connected with separates net (3).
2. The integrated novel active arc and resonance extinguishing intervention device according to claim 1, characterized in that: the mounting plate (6) is formed by bending for many times, the side wall of the sealing plate (2) is provided with a clamping groove (14), the clamping groove (14) is matched with one end edge of the mounting plate (6), the mounting plate (6) is arranged between the sealing plate (2) and the box body (1), and the interior of the box body (1) is separated to form an air passage (11).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211729399.8A CN116113208B (en) | 2022-12-30 | 2022-12-30 | Integrated active arc extinction and resonance elimination intervention device |
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| CN202211729399.8A CN116113208B (en) | 2022-12-30 | 2022-12-30 | Integrated active arc extinction and resonance elimination intervention device |
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| CN116113208B true CN116113208B (en) | 2023-09-05 |
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| CN217824262U (en) * | 2022-05-12 | 2022-11-15 | 北京妙王电气自动化技术有限公司 | Novel complete set of arc extinction, harmonic elimination, line selection and overvoltage protection device |
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| CN101509949A (en) * | 2009-03-20 | 2009-08-19 | 华南理工大学 | Direct current transmission line double-end asynchronous and parameter self-adapting fault distance measuring time-domain method |
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| CN116113208A (en) | 2023-05-12 |
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