CN110780130B - Transformer internal fault simulation test equipment - Google Patents

Transformer internal fault simulation test equipment Download PDF

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Publication number
CN110780130B
CN110780130B CN201910990192.8A CN201910990192A CN110780130B CN 110780130 B CN110780130 B CN 110780130B CN 201910990192 A CN201910990192 A CN 201910990192A CN 110780130 B CN110780130 B CN 110780130B
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main body
pressure
difference
instruction
information
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CN110780130A (en
Inventor
何敏
桂刚
张锦春
余坤
张伟
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Hefei Ruidian Electric Technology Consulting Service Co ltd
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Hefei Ruidian Electric Technology Consulting Service Co ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00Thermometers specially adapted for specific purposes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L11/00Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0084Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12Testing 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
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12Testing 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
    • G01R31/1227Testing 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

Abstract

The invention discloses a transformer internal fault simulation test device which comprises a simulation main body and a management and control system, wherein a top plate is welded on the outer surface of the upper end of the simulation main body, a low-voltage sleeve is fixedly installed at the position, close to the front end, of the outer surface of the upper end of the top plate, a high-voltage sleeve is fixedly installed at the position, close to the rear end, of the outer surface of the upper end of the top plate, lifting rings are welded at the positions, close to the two sides, of the outer surface of the upper end of the top plate, an electronic pressure relief valve is arranged on one side of the low-voltage sleeve, an oil inlet pipe is arranged on the other side of the low-voltage sleeve, and the electronic pressure relief valve and the oil inlet pipe are both connected with the top plate in a welding manner; a first cooler is arranged on one side of the simulation main body, a second cooler is arranged on the other side of the simulation main body, and a base is welded on the outer surface of the lower end of the simulation main body; the invention has the beneficial effects that: can accelerate the speed of carrying out the secondary experiment, let this equipment use more convenient, the security is better simultaneously.

Description

Transformer internal fault simulation test equipment
Technical Field
The invention relates to a simulation real device, in particular to a transformer internal fault simulation test device, and belongs to the technical field of transformer simulation.
Background
Chinese patent publication No. CN107422200A discloses a transformer fault simulation system. The system comprises: the device comprises a shell, a support body, a discharging device and a temperature adjusting device; the shell is used for filling transformer oil to be tested; the support body is arranged in the shell and used for mounting the insulating paper to be tested; the discharging equipment is electrically connected with the power supply equipment and used for discharging the transformer oil to be detected; the temperature adjusting device is used for adjusting the temperature of the transformer oil. The transformer fault simulation system provided by the invention can simulate the partial discharge fault and the breakdown discharge fault of the transformer, can simulate the partial overheat fault of the transformer, or can simultaneously simulate the partial discharge fault, the breakdown discharge fault and the partial overheat fault of the transformer, so that the actual working condition of the transformer can be comprehensively simulated, the performance of the transformer can be more comprehensively and accurately known, and a reference basis is provided for judging whether latent faults exist in the transformer material before operation; but the interval between two fault simulations is long and inconvenient.
The existing simulation test equipment is used, secondary fault simulation can be carried out only for a long time after the fault simulation of the word transformer, time is consumed very, the use requirement of a user cannot be met, meanwhile, the existing simulation test equipment is not convenient enough in the use process and safe enough, and certain influence is brought to the use of the equipment.
Disclosure of Invention
The invention aims to solve the problems that the existing simulation test equipment needs a long time to perform secondary fault simulation after the fault simulation of a word transformer in the using process, the time is very consumed, the using requirements of users cannot be met, and meanwhile, the existing simulation test equipment is inconvenient and unsafe in the using process and has certain influence on the use of the equipment, so that the internal fault simulation test equipment for the transformer is provided.
The purpose of the invention can be realized by the following technical scheme: a transformer internal fault simulation test device comprises a simulation main body and a management and control system, wherein a top plate is welded on the outer surface of the upper end of the simulation main body, a low-voltage sleeve is fixedly installed at the position, close to the front end, of the outer surface of the upper end of the top plate, a high-voltage sleeve is fixedly installed at the position, close to the rear end, of the outer surface of the upper end of the top plate, lifting rings are welded at the positions, close to the two sides, of the outer surface of the upper end of the top plate, an electronic pressure relief valve is arranged on one side of the low-voltage sleeve, an oil inlet pipe is arranged on the other side of the low-voltage sleeve, and the electronic pressure relief valve and the oil inlet pipe are both connected with the top plate in a welding mode;
a first cooler is arranged on one side of the simulation main body, a second cooler is arranged on the other side of the simulation main body, a base is welded on the outer surface of the lower end of the simulation main body, and casters are arranged at the lower end of the base;
an iron core is arranged at the bottom end inside the simulation main body, a winding group is wound outside the iron core, an insulating oil tank is arranged on the outer surface of the rear end of the simulation main body, a first connecting pipe is welded on the outer surface of the insulating oil tank, one end, far away from the insulating oil tank, of the first connecting pipe is welded with the simulation main body, a display pipe is arranged at the front end of the simulation main body, a second connecting pipe is welded on the outer surface of the display pipe, and one end, far away from the display pipe, of the second connecting pipe is welded with the simulation main body;
a temperature sensor is fixedly arranged at a position close to one side in the simulation main body, a pressure sensor is fixedly arranged at a position close to the other side in the simulation main body, and a first voltage sensor and a second voltage sensor are fixedly arranged at the top end in the simulation main body;
the management and control system comprises a data receiving module, a data processing module, a master control module, an information sending module and a display module;
the data receiving module is in communication connection with the pressure sensor, the temperature sensor, the first voltage sensor and the second voltage sensor, and is used for receiving pressure information inside the simulation main body collected by the pressure sensor, temperature information inside the simulation main body collected by the temperature sensor, low-voltage information collected by the first voltage sensor and high-voltage information collected by the second voltage sensor;
the data processing module is used for converting received pressure information into a pressure relief instruction, converting temperature information into a cooling instruction, converting low-pressure information into a first maintenance instruction, converting high-pressure information into a second maintenance instruction, converting the pressure relief instruction, the first maintenance instruction and the second maintenance instruction into an information sending module by the master control module, converting the cooling instruction, the pressure relief instruction, the first maintenance instruction and the second maintenance instruction into cooling information, pressure relief information, first maintenance information and second maintenance information by the information sending module, sending the temperature information, the low-pressure information, the high-pressure information and the pressure information to the display module, displaying the temperature information, the low-pressure information, the high-pressure information and the pressure information on the display screen module, and sending the first maintenance information and the second maintenance information to the intelligent mobile terminal of a user.
The simulation system is characterized in that insulating oil conveying pipes are arranged at positions between the first cooler and the second cooler and between the first cooler and the simulation main body, the first cooler and the second cooler respectively comprise a cooling main body, a cooling grid and a fan box, the cooling grid is welded on the outer surface of one side of the cooling main body, and one end, far away from the cooling main body, of the cooling grid is welded with the fan box.
The cooling device is characterized in that the number of the cooling grids is a plurality of groups, a communicating pipe is arranged between every two adjacent groups of the cooling grids, an oil well pump is arranged inside the cooling main body, and a cooling fan is arranged inside the fan box.
The oil inlet pipe is characterized in that an oil inlet hopper is connected to the upper end of the oil inlet pipe in a threaded mode, a mounting seat is welded to the outer surface of one side of the oil inlet hopper, a rotary rod penetrates through the mounting seat, a rotary handle is welded to one end of the rotary rod, a sealing disc is arranged inside the oil inlet pipe, and the sealing disc is welded to one end, far away from the rotary handle, of the rotary rod.
The oil inlet hopper is internally provided with a first filter screen, a second filter screen and a third filter screen from top to bottom in sequence, and the mesh apertures of the first filter screen, the second filter screen and the third filter screen are sequentially reduced from top to bottom.
The oil inlet device is characterized in that a sealing cover is arranged at the upper end of the oil inlet hopper, a threaded hole is formed in the inner surface of the oil inlet hopper, a threaded column is connected to the inner thread of the threaded hole in a threaded mode, and the upper end of the threaded column is connected with the lower end of the sealing cover in a welded mode.
The cooling instruction is sent to the oil well pump and the cooling fan, and the pressure relief instruction is sent to the electronic pressure relief valve.
Further, the specific generation process of the cooling instruction is as follows:
the method comprises the following steps: marking the temperature information acquired in real time as WD, and marking a preset temperature threshold as WD;
step two: calculating the difference value of WD and WD to obtain the temperature difference WDDifference (D)
Step three: when WDDifference (D)When greater than O, a cool down command is generated, while WD isDifference (D)Less than O. I.e. no instruction is generated;
the specific generation process of the cooling instruction is as follows:
the method comprises the following steps: marking the temperature information acquired in real time as WD1, and marking the preset temperature threshold as WD 2;
step two: calculating the difference value between WD1 and WD2 to obtain the temperature difference WDDifference (D)
Step three: when WDDifference (D)When greater than O, a cool down command is generated, while WD isDifference (D)Less than O. I.e. no instruction is generated;
the specific generation process of the pressure relief instruction is as follows:
s1: marking the pressure information acquired in real time as Yj1, and marking the preset pressure threshold as Yj 2;
s2: calculating the difference value between Yj1 and Yj2 by a formula to obtain the pressure difference YjDifference (D)
S3: when Yj isDifference (D)When the voltage is greater than the preset value, a voltage reduction instruction is generated, and Yj is usedDifference (D)When the voltage is less than the preset value, the pressure reduction information is not produced;
the specific generation process of the first overhaul instruction is as follows: marking the low-pressure information acquired in real time as Kw1, marking a preset low-pressure threshold as Kw2, calculating the difference value between Kw1 and Kw2 to obtain the low-pressure difference KwDifference (D)When Kw isDifference (D)When the current time is within the preset range, the first maintenance instruction is not generated, and when the current time is KwDifference (D)When the preset range is exceeded, a first maintenance instruction is generated;
specific generation process of the second overhaul instructionThe following were used: marking the high-pressure information acquired in real time as Kt1, marking a preset high-pressure threshold as Kt2, calculating the difference value of Kt1 and Kt2 to obtain the high-pressure difference KtDifference (D)When Kt isDifference (D)And when the t difference exceeds the preset range, generating a second overhaul instruction.
Further, lifting holes are formed in the lifting rings, the lifting rings are two groups, and the lifting rings are symmetrically arranged.
The caster wheels are universal wheels, the number of the caster wheels is at least four, and the caster wheels are arranged in parallel at equal intervals.
Compared with the prior art, the invention has the beneficial effects that:
1. when the device is used, the temperature sensor can monitor the insulation oil temperature in the simulation device main body in real time, after single fault simulation receiving, the temperature sensor sends the temperature information monitored in real time to the data receiving module, the temperature information is processed by the data processing module, the temperature information acquired in real time is marked as WD1, the preset temperature threshold value is marked as WD2, the difference value between WD1 and WD2 is calculated, and the temperature difference WD is obtainedThe difference is that the number of the first and second,when WDDifference (D)When the temperature of the insulating oil in the equipment main body 1 is larger than O, a cooling instruction is generated and sent to the oil well pump and the cooling fan, the oil well pump pumps the insulating oil in the equipment main body 1 into the first cooler and the second cooler, the insulating oil pumped into the first cooler and the second cooler flows into the cooling grids, the multiple groups of cooling grids are independently arranged, so that the heat dissipation area is increased, the insulating oil temperature can be rapidly cooled down, meanwhile, the cooling fan blows air by operation, the flow velocity of the air among the multiple groups of cooling grids can be accelerated, the heat loss is accelerated, the insulating oil temperature in the equipment can better and faster fall back, the next group of users can rapidly reuse the equipment for fault simulation, the time interval between two simulation experiments is reduced, and the equipment is more convenient to use;
2. meanwhile, when the device is used, the first voltage sensor and the second voltage sensor can monitor the device in real timeThe voltage situation of the equipment is still continuously monitored by the first voltage sensor and the second voltage sensor after the equipment is used up, low-voltage information and high-voltage information collected by the first voltage sensor and the second voltage sensor are processed into a first maintenance instruction and a second maintenance instruction, and the specific generation process of the first maintenance instruction is as follows: marking the low-pressure information acquired in real time as Kw1, marking a preset low-pressure threshold as Kw2, calculating the difference value between Kw1 and Kw2 to obtain the low-pressure difference KwDifference (D)When Kw isDifference (D)When the current time is within the preset range, the first maintenance instruction is not generated, and when the current time is KwDifference (D)When the preset range is exceeded, a first overhaul instruction is generated, and the specific generation process of the second overhaul instruction is as follows: marking the high-pressure information acquired in real time as Kt1, marking a preset high-pressure threshold as Kt2, calculating the difference value of Kt1 and Kt2 to obtain the high-pressure difference KtDifference (D)When Kt isDifference (D)When the current time is within the preset range, the first maintenance instruction is not generated, and when t isDifference (D)When the fault condition exceeds the preset range, a second overhaul instruction is generated, the first overhaul instruction and the second overhaul instruction are both sent to an intelligent terminal of a user, the user can visually know the fault condition after the equipment is used for simulating the fault of the transformer, so that the fault can be quickly discharged, the next group of users can quickly use the equipment for transformer fault simulation, the equipment is more convenient to use, and the equipment can quickly simulate a plurality of groups of different types of faults;
3. in the process of carrying out the simulation, pressure sensor can real-timely monitoring simulate the pressure situation in the main part, the pressure information mark that gathers in real time is Yj1, preset pressure threshold mark is Yj2, calculate the difference of the surplus Yj2 of Yj1 through the formula, obtain pressure difference Yj is poor, when Yj is poor and is greater than the default, generate the step-down instruction promptly, send the electronic relief valve after the step-down instruction is converted to the step-down information, electronic relief valve receives behind the step-down information, open and carry out the pressure release to this equipment, thereby effectively avoided this equipment in the use because the too big unexpected situation of emergence of internal pressure takes place, let the security of this equipment better.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic overall perspective view of the present invention;
FIG. 2 is an internal view of a mock body according to the present invention;
FIG. 3 is an overall structural view of a first cooler of the present invention;
FIG. 4 is an internal view of a first cooler of the present invention;
FIG. 5 is a view of the combination of an oil inlet tube and an oil inlet hopper of the present invention;
FIG. 6 is an internal view of an oil inlet tube and an oil inlet hopper of the present invention;
FIG. 7 is an enlarged view taken at A of FIG. 6 of the present invention;
fig. 8 is a block diagram of a management and control terminal according to the present invention.
In the figure: 1. simulating a subject; 2. a top plate; 3. a low-pressure bushing; 4. a high voltage bushing; 5. lifting a lifting ring; 6. an electronic pressure relief valve; 7. an oil inlet pipe; 701. an oil inlet hopper; 702. a mounting seat; 703. rotating the rod; 704. turning a handle; 705. sealing the disc; 706. a first filter screen; 707. a second filter screen; 708. a third filter screen; 709. a sealing cover; 710. a threaded hole; 711. a threaded post; 8. a first cooler; 801. cooling the body; 802. cooling grids; 803. a fan box; 804. an oil well pump; 805. a communicating pipe; 806. a cooling fan; 9. a second cooler; 10. a base; 11. a caster wheel; 12. an iron core; 13. winding; 14. an insulating oil tank; 141. a first connecting pipe; 15. a display tube; 16. a second connecting pipe; 17. an insulating oil pipe is conveyed; 18. a temperature sensor; 19. a first voltage sensor; 20. a second voltage sensor; 21. a pressure sensor.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, a transformer internal fault simulation test device includes a simulation main body 1 and a management and control system, a top plate 2 is welded on the outer surface of the upper end of the simulation main body 1, a low-voltage sleeve 3 is fixedly installed on the outer surface of the upper end of the top plate 2 near the front end, the low-voltage sleeve 3 is used for connecting a low-voltage cable, a high-voltage sleeve 4 is fixedly installed on the outer surface of the upper end of the top plate 2 near the rear end, the high-voltage sleeve 4 is used for connecting a dry cable, lifting rings 5 are welded on the outer surface of the upper end of the top plate 2 near both sides, lifting holes are formed in the lifting rings 5, the number of the lifting rings 5 is two, the lifting rings 5 are symmetrically arranged, and a user can hang hooks of a lifting machine in the lifting holes on the lifting rings 5 to lift the device;
an electronic pressure relief valve 6 is arranged on one side of the low-pressure sleeve 3, the electronic pressure relief valve 6 is used for relieving pressure of the equipment to prevent the equipment from being damaged due to overhigh pressure in the equipment, an oil inlet pipe 7 is arranged on the other side of the low-pressure sleeve 3, the oil inlet pipe 7 is used for filling insulating oil into the equipment, and the electronic pressure relief valve 6 and the oil inlet pipe 7 are both connected with the top plate 2 in a welding mode;
a first cooler 8 is arranged on one side of the simulation main body 1, a second cooler 9 is arranged on the other side of the simulation main body 1, the first cooler 8 and the second cooler 9 are both used for cooling the insulating oil, a base 10 is welded on the outer surface of the lower end of the simulation main body 1, a caster 11 is arranged on the lower end of the base 10, and the caster 11 is convenient for a user to move the equipment;
an iron core 12 is arranged at the bottom end inside the simulation main body 1, a winding group 13 is wound outside the iron core 12, an insulating oil tank 14 is arranged on the outer surface of the rear end of the simulation main body 1, a first connecting pipe 141 is welded on the outer surface of the insulating oil tank 14, the insulating oil tank 14 is used for storing insulating oil, the first connecting pipe 141 is used for conveying the insulating oil, one end of the first connecting pipe 141, which is far away from the insulating oil tank 14, is welded with the simulation main body 1, a display pipe 15 is arranged at the front end of the simulation main body 1, a second connecting pipe 16 is welded on the outer surface of the display pipe 15, one end of the second connecting pipe 16, which is far away from the display pipe 15, is welded with the simulation main body 1, the display pipe 15 is connected with the simulation main body 1 through the second connecting pipe 16, meanwhile, the second connecting pipe 16 is communicated with the simulation main body 1 and the display pipe 15, so that the insulating oil in the simulation main body 1 can flow into the display pipe 15, and a user can visually observe the quality of the insulating oil;
a temperature sensor 18 is fixedly installed at a position, close to one side, inside the simulation main body 1, the temperature sensor 18 is used for monitoring the temperature inside the equipment, a pressure sensor 21 is fixedly installed at a position, close to the other side, inside the simulation main body 1, the pressure sensor 21 is used for monitoring the pressure condition in the equipment, a first voltage sensor 19 and a second voltage sensor 20 are fixedly installed at the top end inside the simulation main body 1, and the first voltage sensor 19 and the second voltage sensor 20 are used for monitoring the voltage of an accessed low-voltage cable and the voltage of a high-voltage cable;
the management and control system comprises a data receiving module, a data processing module, a master control module, an information sending module and a display module;
the data receiving module is in communication connection with the pressure sensor 21, the temperature sensor 18, the first voltage sensor 19 and the second voltage sensor 20, and is used for receiving pressure information inside the simulation main body 1 collected by the pressure sensor 21, temperature information inside the simulation main body 1 collected by the temperature sensor 18, low-voltage information collected by the first voltage sensor 19 and high-voltage information collected by the second voltage sensor 20;
the data processing module is used for converting received pressure information into a pressure relief instruction, converting temperature information into a cooling instruction, converting low-pressure information into a first maintenance instruction, converting high-pressure information into a second maintenance instruction, converting the pressure relief instruction, the first maintenance instruction and the second maintenance instruction are sent to the information sending module by the master control module, the information sending module converts the cooling instruction into the pressure relief instruction, the first maintenance instruction and the second maintenance instruction are converted into cooling information, the pressure relief information, the first maintenance information and the second maintenance information, the temperature information, the low-pressure information, the high-pressure information and the pressure information can be sent to the display module and are displayed on the display screen module, and the first maintenance information and the second maintenance information can be sent to the intelligent mobile terminal of a user.
Insulating oil conveying pipes 17 are arranged at positions between the first cooler 8, the second cooler 9 and the simulation main body 1, the first cooler 8 and the second cooler 9 respectively comprise a cooling main body 801, a cooling grid 802 and a fan box 803, the cooling grid 802 is welded on the outer surface of one side of the cooling main body 801, and one end, far away from the cooling main body 801, of the cooling grid 802 is welded with the fan box 803; the quantity of cooling check 802 is a plurality of groups, and the position between two sets of adjacent cooling check 802 is provided with communicating pipe 805, and communicating pipe 805 lets insulating oil flow between cooling check 802 to realize better cooling, the inside of cooling main part 801 is provided with oil-well pump 804, and the inside of fan case 803 is provided with cooling blower 806, and cooling blower 806 has played the radiating effect of cooling.
The upper end of the oil inlet pipe 7 is in threaded connection with an oil inlet hopper 701, the outer surface of one side of the oil inlet hopper 701 is welded with an installation seat 702, a rotating rod 703 penetrates through the installation seat 702, a rotating handle 704 is welded at one end of the rotating rod 703, a sealing disc 705 is arranged inside the oil inlet pipe 7, and the sealing disc 705 is welded with one end of the rotating rod 703, which is far away from the rotating handle 704.
A first filter 706, a second filter 707, and a third filter 708 are sequentially disposed inside the oil inlet funnel 701 from top to bottom, and mesh apertures of the first filter 706, the second filter 707, and the third filter 708 decrease from top to bottom.
The upper end of the oil inlet bucket 701 is provided with a sealing cover 709, the inner surface of the oil inlet bucket 701 is provided with a threaded hole 710, the inner part of the threaded hole 710 is in threaded connection with a threaded column 711, and the upper end of the threaded column 711 is in welded connection with the lower end of the sealing cover 709.
The cooling command is sent to the oil pump 804 and the cooling fan 806, and the pressure relief command is sent to the electronic pressure relief valve 6.
The specific generation process of the cooling instruction is as follows:
the method comprises the following steps: marking the temperature information acquired in real time as WD1, and marking the preset temperature threshold as WD 2;
step two: calculating the difference value between WD1 and WD2 to obtain the temperature difference WDDifference (D)
Step three: when WDDifference (D)When greater than O, a cool down command is generated, while WD isDifference (D)Less than O. I.e. no instruction is generated;
the specific generation process of the pressure relief instruction is as follows:
s1: marking the pressure information acquired in real time as Yj1, and marking the preset pressure threshold as Yj 2;
s2: calculating the difference value between Yj1 and Yj2 by a formula to obtain the pressure difference YjDifference (D)
S3: when Yj isDifference (D)When the voltage is greater than the preset value, a voltage reduction instruction is generated, and Yj is usedDifference (D)When the voltage is less than the preset value, the pressure reduction information is not produced;
the specific generation process of the first overhaul instruction is as follows: marking the low-pressure information acquired in real time as Kw1, marking a preset low-pressure threshold as Kw2, calculating the difference value between Kw1 and Kw2 to obtain the low-pressure difference KwDifference (D)When Kw isDifference (D)When the current time is within the preset range, the first maintenance instruction is not generated, and when the current time is KwDifference (D)When exceeding the preset scope, produce first maintenance instruction promptly, the content of first maintenance instruction is: please the working personnel to overhaul the low-voltage sleeve;
the specific generation process of the second overhaul instruction is as follows: marking the high-pressure information acquired in real time as Kt1, marking a preset high-pressure threshold as Kt2, calculating the difference value of Kt1 and Kt2 to obtain the high-pressure difference KtDifference (D)When Kt isDifference (D)When the difference t exceeds the preset range, a second overhaul instruction is generated, and the content of the second overhaul instruction is as follows: please examine and repair the high voltage bushing.
The truckles 11 are the universal wheels, and the quantity of truckles 11 is four groups at least, and the truckles 11 all are equidistance parallel arrangement.
When the device is used, the temperature sensor 18 can monitor the temperature of the insulating oil in the simulation device main body 1 in real time in the using process of the device, after single fault simulation receiving, the temperature sensor 18 sends the temperature information monitored in real time to the data receiving module, the temperature information is processed by the data processing module, the temperature information collected in real time is marked as WD1, the preset temperature threshold value is marked as WD2, the difference value between WD1 and WD2 is calculated, and the temperature difference WD is obtainedThe difference is that the number of the first and second,when WDDifference (D)When the temperature is higher than O, the temperature is reducedThe instruction, the cooling instruction is sent to the oil pump 804 and the cooling fan 806, the oil pump 804 operates to pump the insulating oil in the equipment main body 1 into the first cooler 8 and the second cooler 9, the insulating oil pumped into the first cooler 8 and the second cooler 9 flows into the cooling grids 801, the multiple groups of cooling grids 801 are independently arranged to increase the heat dissipation area, so that the insulating oil temperature can be rapidly cooled down, and meanwhile, the cooling fan 806 operates to blow air, so that the flow rate of air between the multiple groups of cooling grids 801 is increased, the loss of heat is accelerated, and the insulating oil temperature in the equipment can better and faster fall back, so that the next group of users can rapidly reuse the equipment to perform fault simulation, the equipment is more convenient to use, and meanwhile, during the use of the equipment, the first voltage sensor 19 and the second voltage sensor 20 can monitor the voltage condition of the equipment in real time, after the equipment is used, the first voltage sensor 19 and the second voltage sensor 20 still continue to monitor the voltage condition of the equipment, the low-voltage information and the high-voltage information collected by the first voltage sensor 19 and the second voltage sensor 20 are processed into a first maintenance instruction and a second maintenance instruction, and the specific generation process of the first maintenance instruction is as follows: marking the low-pressure information acquired in real time as Kw1, marking a preset low-pressure threshold as Kw2, calculating the difference value between Kw1 and Kw2 to obtain the low-pressure difference KwDifference (D)When Kw isDifference (D)When the current time is within the preset range, the first maintenance instruction is not generated, and when the current time is KwDifference (D)When the preset range is exceeded, a first overhaul instruction is generated, and the specific generation process of the second overhaul instruction is as follows: marking the high-pressure information acquired in real time as Kt1, marking a preset high-pressure threshold as Kt2, calculating the difference value of Kt1 and Kt2 to obtain the high-pressure difference KtDifference (D)When Kt isDifference (D)When the current time is within the preset range, the first maintenance instruction is not generated, and when t isDifference (D)When the fault condition exceeds the preset range, a second maintenance instruction is generated, the first maintenance instruction and the second maintenance instruction are both sent to the intelligent terminal of the user, the user can visually know the fault condition after the equipment is used for simulating the fault of the transformer, so that the fault can be quickly discharged, the next group of users can quickly use the equipment for transformer fault simulation,the device is more convenient to use due to the arrangement, the device can more quickly simulate a plurality of groups of faults of different types, in the simulation process, the pressure sensor 21 can monitor the pressure condition in the simulation main body 1 in real time, the pressure information acquired in real time is marked as Yj1, the preset pressure threshold value is marked as Yj2, the difference value of the Yj1 and the Yj2 is calculated through a formula to obtain the pressure difference Yj difference, when the Yj difference is larger than the preset value, a pressure reduction command is generated, the pressure reduction command is converted into the pressure reduction information and then sent to the electronic pressure release valve 6, the electronic pressure release valve 6 is opened to release the pressure of the device after receiving the pressure reduction information, the accidental situation of the device due to the overlarge internal pressure in the use process is effectively avoided, the safety of the device is better, a user uses the oil inlet pipe 7 to inject insulating oil into the device, the user selects the sealing cover 709 on the oil inlet bucket 701 firstly to enable the threaded column 711 to be separated from the threaded hole 701, then the sealing cover 709 is detached, the rotating handle 704 is rotated, the rotating handle 704 drives the sealing disc 705 to be opened through the rotating rod 703, so that the insulating oil can enter the equipment, the first filter screen 706, the second filter screen 707 and the third filter screen 708 are sequentially arranged in the oil inlet bucket 701 from top to bottom, the mesh apertures of the first filter screen 706, the second filter screen 707 and the third filter screen 708 are sequentially reduced from top to bottom, the arrangement can filter the insulating oil when the user fills the insulating oil into the equipment, the quality of the insulating oil filled into the equipment can be improved, and the influence of impurities in the insulating oil on the equipment is reduced.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (1)

1. The internal fault simulation test equipment of the transformer comprises a simulation main body (1) and a management and control system, and is characterized in that a top plate (2) is welded on the outer surface of the upper end of the simulation main body (1), a low-voltage sleeve (3) is fixedly installed on the outer surface of the upper end of the top plate (2) close to the front end, a high-voltage sleeve (4) is fixedly installed on the outer surface of the upper end of the top plate (2) close to the rear end, lifting rings (5) are welded on the outer surface of the upper end of the top plate (2) close to the two sides, an electronic pressure release valve (6) is arranged on one side of the low-voltage sleeve (3), an oil inlet pipe (7) is arranged on the other side of the low-voltage sleeve (3), and the electronic pressure release valve (6) and the oil inlet pipe (7) are both in welded connection with the top plate (2);
a first cooler (8) is arranged on one side of the simulation main body (1), a second cooler (9) is arranged on the other side of the simulation main body (1), a base (10) is welded on the outer surface of the lower end of the simulation main body (1), and casters (11) are arranged at the lower end of the base (10);
an iron core (12) is arranged at the bottom end of the interior of the simulation main body (1), a winding group (13) is wound on the exterior of the iron core (12), an insulating oil tank (14) is arranged on the outer surface of the rear end of the simulation main body (1), a first connecting pipe (141) is welded on the outer surface of the insulating oil tank (14), one end, far away from the insulating oil tank (14), of the first connecting pipe (141) is welded with the simulation main body (1), a display pipe (15) is arranged at the front end of the simulation main body (1), a second connecting pipe (16) is welded on the outer surface of the display pipe (15), and one end, far away from the display pipe (15), of the second connecting pipe (16) is welded with the simulation main body (1);
a temperature sensor (18) is fixedly mounted at a position close to one side in the simulation main body (1), a pressure sensor (21) is fixedly mounted at a position close to the other side in the simulation main body (1), and a first voltage sensor (19) and a second voltage sensor (20) are fixedly mounted at the top end in the simulation main body (1);
the management and control system comprises a data receiving module, a data processing module, a master control module, an information sending module and a display module;
the data receiving module is in communication connection with the pressure sensor (21), the temperature sensor (18), the first voltage sensor (19) and the second voltage sensor (20), and is used for receiving pressure information inside the simulation main body (1) collected by the pressure sensor (21), temperature information inside the simulation main body (1) collected by the temperature sensor (18), low-voltage information collected by the first voltage sensor (19) and high-voltage information collected by the second voltage sensor (20);
the data processing module is used for converting received pressure information into a pressure relief instruction, converting temperature information into a temperature reduction instruction, converting low-pressure information into a first maintenance instruction and converting high-pressure information into a second maintenance instruction, the temperature reduction instruction, the pressure relief instruction, the first maintenance instruction and the second maintenance instruction are sent to the information sending module by the master control module, the information sending module converts the temperature reduction instruction, the pressure relief instruction, the first maintenance instruction and the second maintenance instruction into temperature reduction information, pressure relief information, first maintenance information and second maintenance information, the temperature information, the low-pressure information, the high-pressure information and the pressure information are all sent to the display module and displayed on the display screen module, and the first maintenance information and the second maintenance information are sent to an intelligent mobile terminal of a user;
insulating oil conveying pipes (17) are arranged at positions between the first cooler (8) and the second cooler (9) and between the simulation main body (1), each of the first cooler (8) and the second cooler (9) comprises a cooling main body (801), a cooling grid (802) and a fan box (803), the cooling grid (802) is welded on the outer surface of one side of the cooling main body (801), and one end, far away from the cooling main body (801), of the cooling grid (802) is welded with the fan box (803);
the number of the cooling grids (802) is a plurality of groups, a communication pipe (805) is arranged between two adjacent groups of the cooling grids (802), an oil-well pump (804) is arranged inside the cooling main body (801), and a cooling fan (806) is arranged inside the fan box (803);
the oil inlet pipe is characterized in that the upper end of the oil inlet pipe (7) is in threaded connection with an oil inlet hopper (701), the outer surface of one side of the oil inlet hopper (701) is welded with an installation seat (702), a rotating rod (703) penetrates through the installation seat (702), a rotating handle (704) is welded at one end of the rotating rod (703), a sealing disc (705) is arranged inside the oil inlet pipe (7), and the sealing disc (705) is welded with one end, far away from the rotating handle (704), of the rotating rod (703);
a first filter screen (706), a second filter screen (707) and a third filter screen (708) are sequentially arranged in the oil inlet hopper (701) from top to bottom, and the mesh apertures of the first filter screen (706), the second filter screen (707) and the third filter screen (708) are sequentially reduced from top to bottom;
the oil inlet hopper is characterized in that a sealing cover (709) is arranged at the upper end of the oil inlet hopper (701), a threaded hole (710) is formed in the inner surface of the oil inlet hopper (701), a threaded column (711) is connected to the inner thread of the threaded hole (710), and the upper end of the threaded column (711) is connected with the lower end of the sealing cover (709) in a welding mode;
the temperature reduction instruction is sent to an oil well pump (804) and a cooling fan (806), and the pressure relief instruction is sent to an electronic pressure relief valve (6);
the specific generation process of the cooling instruction is as follows:
the method comprises the following steps: marking the temperature information acquired in real time as WD1, and marking the preset temperature threshold as WD 2;
step two: calculating the difference value between WD1 and WD2 to obtain the temperature difference WDDifference (D)
Step three: when WDDifference (D)When more than 0, generating a cooling command, while WDDifference (D)When the value is less than 0, no instruction is generated;
the specific generation process of the pressure relief instruction is as follows:
s1: marking the pressure information acquired in real time as Yj1, and marking the preset pressure threshold as Yj 2;
s2: calculating the difference between Yj1 and Yj2 by the formula to obtain the pressure difference YjDifference (D)
S3: when Yj isDifference (D)When the voltage is larger than the preset value, a voltage reduction command is generated, and when Yj is larger than the preset valueDifference (D)When the voltage is less than the preset value, the pressure reduction information is not produced;
the specific generation process of the first overhaul instruction is as follows: marking the low-pressure information acquired in real time as Kw1, marking a preset low-pressure threshold as Kw2, calculating the difference value between Kw1 and Kw2 to obtain the low-pressure difference KwDifference (D)When Kw isDifference (D)When the current time is within the preset range, the first maintenance instruction is not generated, and when the current time is KwDifference (D)When the preset range is exceeded, a first maintenance instruction is generated;
the specific generation process of the second overhaul instruction is as follows: marking the high-pressure information acquired in real time as Kt1, marking a preset high-pressure threshold as Kt2, calculating the difference value of Kt1 and Kt2 to obtain the high-pressure difference KtDifference (D)When Kt isDifference (D)When the current time is within the preset range, the second maintenance instruction is not generated, and when the current time is KtDifference (D)When the preset range is exceeded, a second overhaul instruction is generated;
lifting holes are formed in the lifting rings (5), the number of the lifting rings (5) is two, and the lifting rings (5) are symmetrically arranged;
the truckle (11) are the universal wheel, and the quantity of truckle (11) is four groups at least, truckle (11) all are equidistance parallel arrangement.
CN201910990192.8A 2019-10-17 2019-10-17 Transformer internal fault simulation test equipment Active CN110780130B (en)

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