CN109802488B - Remote intelligent monitoring system of transformer - Google Patents
Remote intelligent monitoring system of transformer Download PDFInfo
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- CN109802488B CN109802488B CN201910061625.1A CN201910061625A CN109802488B CN 109802488 B CN109802488 B CN 109802488B CN 201910061625 A CN201910061625 A CN 201910061625A CN 109802488 B CN109802488 B CN 109802488B
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The invention provides a remote intelligent monitoring system of a transformer, which breaks through the structural form of the traditional transformer monitoring system, and monitors and controls the temperature state of the transformer in the actual working process; the first temperature detector detects the temperature in the transformer and transmits a temperature signal to the controller, the controller transmits the signal to a remote control terminal of a remote control center through a wireless signal transmitting and receiving device, the remote control terminal is provided with a corresponding wireless signal transmitting and receiving device, and when the first temperature detector detects that the temperature in the transformer is higher than a set value, the controller controls the auxiliary switch mechanism to switch off the circuit; the breakdown detector detects the voltage of the main components such as the transformer coil and the like, transmits a voltage signal to the controller, the controller transmits the signal to the remote control terminal of the remote control center through the wireless signal transmitting and receiving device, and when the breakdown detector detects that the main components such as the transformer coil and the like are broken down, the controller controls the auxiliary switch mechanism to switch off the circuit.
Description
Technical Field
The invention relates to the field of high-voltage transmission equipment, in particular to a remote intelligent monitoring system of a transformer.
Background
The mechanism of transformer has been known, like chinese utility model patent CN201721294816.5 discloses a natural ester insulating oil distribution transformer, including oil tank, iron core, high-voltage coil, low-voltage coil, high-tension bushing, low-voltage bushing, oil level gaugember and tap changer, the oil tank be the ellipsoid shape, high-voltage coil and low-voltage coil closely twine respectively on the iron core, the iron core soaks in the natural ester insulating oil in the oil tank, install high-tension bushing and low-voltage bushing on the oil tank top surface, high-tension bushing and low-voltage bushing are connected with high-voltage coil and low-voltage coil respectively, in the oil level gaugember was installed and extended to natural ester insulating oil to one side at oil tank top, tap changer set up the oil tank top in the middle of high-tension bushing and low-voltage bushing, the opposite side at oil tank top is provided with the oiling. The oil tank wall of the oil tank is arranged to be of a corrugated wall structure, and the corrugated wall structure is used for increasing the elasticity of the oil tank wall. The two sides corresponding to the long axis of the ellipsoidal oil tank are respectively provided with a radiator which is composed of a plurality of rectangular radiating fins arranged at equal intervals. Round bulges or spiral fins are uniformly embedded on the radiating fins. The outer surface of the oil tank is coated with a carbon nano modification-based resin-based heat dissipation coating, and the thickness of the heat dissipation coating is 40-50 mu m. The outer surface of the radiating fin is coated with a carbon nano modification-based resin-based radiating coating, and the thickness of the radiating coating is 40-50 microns. One side of oil tank is provided with the hydrologic cycle radiator, and the hydrologic cycle radiator is including advancing oil pipe, defeated oil pipe, play oil pipe, storage water tank and hydrologic cycle mechanism, advances oil pipe and goes out oil pipe and is connected with oiling valve and fuel outlet valve respectively, advances to be provided with the oil pump on the oil pipe, and the storage water tank suit is on defeated oil pipe, and the water inlet setting of hydrologic cycle mechanism is in the storage water tank bottom, and the delivery port setting is at the storage water tank. The oil delivery pipe in the water circulation radiator is arranged in a spiral or double spiral shape. The oil outlet pipe is provided with a moisture absorber.
The invention improves the energy efficiency grade of the transformer to a certain extent, but in the actual working process, the invention is similar to most transformers in the market, an effective remote supporting monitoring system is not provided, the controllability and timeliness of the transformer and a control circuit thereof are not enough, for example, under the conditions of rainstorm or fire and the like, electrical components can be damaged, and under the condition of not cutting off power timely, more serious fire, electric shock and the like are caused, and the personal and property safety of the masses is seriously threatened.
Accordingly, the present inventors have made extensive studies to solve the above problems and have made the present invention.
Disclosure of Invention
The invention aims to provide a remote intelligent monitoring system of a transformer, which can carry out remote intelligent monitoring and control on the transformer and a control circuit thereof and ensure the stable and safe operation of the transformer and the control circuit thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a remote intelligent monitoring system of a transformer comprises the transformer and a monitoring system for monitoring the transformer; the transformer and the monitoring system are connected together in a wireless or wired mode; the transformer comprises an oil-immersed transformer main body, wherein the insulating oil of the oil-immersed transformer main body is natural ester; the monitoring system comprises a first temperature detector, a breakdown detector and monitoring equipment, wherein the first temperature detector and the breakdown detector are arranged in the transformer, and the monitoring equipment is arranged outside the transformer; the monitoring equipment comprises a cabinet body and an electric component arranged in the cabinet body; the monitoring system also comprises a monitoring device for monitoring the electric component; the cabinet body comprises a main cabinet for containing the electric components and a protection cabinet coated outside the main cabinet; the main cabinet and the protection cabinet are sealed box bodies; an air containing cavity is formed between the main cabinet and the protection cabinet, and gaps are formed between corresponding side walls of the main cabinet and the protection cabinet; the main cabinet is filled with first protective gas at normal pressure, the gas containing cavity is filled with second protective gas with the gas pressure smaller than the gas pressure of the first protective gas and the external atmospheric pressure, and the first protective gas and the second protective gas are both nitrogen or carbon dioxide gas; the main cabinet is provided with a first air inlet valve and a first air outlet valve, and the protection cabinet is provided with a second air inlet valve and a second air outlet valve; the monitoring device comprises an air pressure detector, a second temperature detector, a circuit on-off detector, a controller and a remote control terminal, wherein the air pressure detector and the second temperature detector are arranged in the air accommodating cavity; the electric components comprise a first isolating switch connected with an input electric wire, a second isolating switch connected with an output electric wire, a main switch mechanism connected with the second isolating switch, a circuit breaker connected with the first isolating switch, and an auxiliary switch mechanism connected between the main switch mechanism and the circuit breaker; the auxiliary switch mechanism is controlled by the controller; the first isolating switch, the circuit breaker, the auxiliary switch mechanism, the main switch mechanism and the second isolating switch are connected in sequence through conducting wires;
the main switch mechanism comprises a switch actuating mechanism and a switch actuating mechanism for driving the switch actuating mechanism to open and close; the switch actuating mechanism comprises a fixed electric contact piece electrically connected with the circuit breaker and an elastic swinging electric contact piece electrically connected with the second disconnecting switch and electrically contacted with the fixed electric contact piece; the fixed electric contact is positioned between the elastic swing electric contact and the switch power mechanism;
the main cabinet comprises a first mounting plate for mounting the switch power mechanism, and the protection cabinet comprises a second mounting plate corresponding to the first mounting plate; the switch power mechanism comprises a first push-pull rod which props against the elastic swinging electric contact piece to swing and is separated from the fixed electric contact piece, an elastic bag which is arranged on the first mounting plate and drives the first push-pull rod to move horizontally, a second push-pull rod which drives the elastic bag, and a manual operation mechanism which drives the second push-pull rod; the first mounting plate is provided with a first through hole for mounting the elastic bag, and the second mounting plate is provided with a sealing sliding hole for the second push-pull rod to slide in a sealing manner.
The first push-pull rod is provided with a first push-pull end facing the elastic swing electric contact piece and a first connecting end facing the center of the elastic bag and connected with the elastic bag; a connecting top plate connected with the first connecting end is arranged in the center of the elastic bag; the second push-pull rod is provided with a second push-pull end facing the connecting top plate and a second connecting end extending out of the sealing sliding hole and connected with the manual operating mechanism.
The air containing cavity is internally provided with a baffle plate which is blocked outside the elastic bag, the baffle plate is connected with the edge of the first through hole, the baffle plate is provided with a sliding through hole which corresponds to the connecting top plate and is used for the second push-pull rod to slide through, the diameter of the sliding through hole is smaller than that of the connecting top plate, and a gap is formed between the inner wall of the sliding through hole and the peripheral surface of the second push-pull rod.
The manual operating mechanism comprises a turntable, a handle for pulling the turntable to rotate, and a rocker connected between the turntable and the second push-pull rod; the rocker is provided with a first pivoting end pivoted with the second connecting end through a first rotating shaft and a second pivoting end pivoted with the rotary disc through a second rotating shaft.
The axis of the second rotating shaft and the axis of the rotating shaft are in the same horizontal plane, and the handle is provided with a first limit stop block above the rotating disc and a second limit stop block below the rotating disc.
A first operation opening is formed in the first mounting plate, and a first sealing door is arranged at the first operation opening; a second operation opening corresponding to the first operation opening is formed in the second mounting plate, and a second sealing door is arranged at the second operation opening; the first sealing door is positioned on the inner side of the operation opening and is connected with the edge of the first operation opening through a hinge to realize inward opening; the second sealing door is positioned at the outer side of the second operation opening and is connected with the edge of the second operation opening through a hinge to realize outward opening; the first sealing door is provided with a first sealing edge which is in sealing contact with the edge of the first operation opening, and a first sealing gasket is arranged on the first sealing edge; the second sealing door is provided with a second sealing edge which is in sealing contact with the edge of the second operation opening, and a second sealing gasket is arranged on the second sealing edge.
And a support rod is arranged between each corresponding side wall of the main cabinet and the protection cabinet.
After the technical scheme is adopted, the remote intelligent monitoring system of the transformer breaks through the structural form of the traditional transformer monitoring system, and monitors and controls the temperature state of the transformer in the actual working process; the first temperature detector detects the temperature in the transformer and transmits a temperature signal to the controller, the controller transmits the signal to a remote control terminal of a remote control center through a wireless signal transmitting and receiving device, the remote control terminal is provided with a corresponding wireless signal transmitting and receiving device, and when the first temperature detector detects that the temperature in the transformer is higher than a set value, the controller controls a secondary switch mechanism (specifically, a remote switch) to cut off a circuit; the breakdown detector (specifically, a voltmeter) detects the voltage of the main components such as the transformer coil and transmits a voltage signal to the controller, the controller transmits the signal to a remote control terminal of a remote control center through a wireless signal transmitting and receiving device, and when the breakdown detector detects that the main components such as the transformer coil are broken down (such as the voltage is suddenly reduced), the controller controls the auxiliary switch mechanism to switch off the circuit; in the initial state of the monitoring equipment, under the action of the elastic force of the elastic bag, the first push-pull end of the first push-pull rod abuts against the elastic swinging electric contact piece, so that the elastic swinging electric contact piece is separated from the fixed electric contact piece, and the circuit is disconnected. Filling nitrogen or carbon dioxide gas into the main cabinet through a first air inlet valve by using an air charging device, discharging impurity gases such as air, water vapor and the like through a first air outlet valve, and then closing the first air outlet valve to enable the main cabinet to be filled with first protective gas; then, nitrogen or carbon dioxide gas is filled into the gas containing cavity through the second gas inlet valve by using the inflating device, impurity gases such as air, water vapor and the like are discharged through the second gas outlet valve, then the second gas outlet valve is closed, and part of second protective gas in the gas containing cavity is pumped out, so that the pressure of the second protective gas is lower than the pressure of the first protective gas and the pressure of the external atmosphere, negative pressure is formed in the gas containing cavity, the elastic bag is expanded towards the gas containing cavity, the first push-pull rod is driven to move towards the direction of the first connecting end, and the elastic swinging electric contact is in contact conduction with the fixed electric contact. The nitrogen or carbon dioxide in the main cabinet is protective gas, so that all electric components can be protected, oxidation and electric sparks are prevented, the service life is prolonged, and accidents such as fire disasters are avoided; and the nitrogen or carbon dioxide gas in the gas containing cavity can be mixed with the nitrogen or carbon dioxide gas in the main cabinet under the condition that the main cabinet leaks, and is still protective gas. The air pressure detector detects the air pressure in the air containing cavity and transmits a pressure signal to the controller, the controller transmits the signal to the remote control terminal of the remote control center through the wireless signal transmitting and receiving device, when the air pressure is higher than a set value, the air pressure is probably because the ambient temperature is too high, or the main cabinet or the protection cabinet is damaged, a worker can judge according to the actual situation, if the temperature of the second temperature detector is too high, whether a fire disaster occurs can be judged, if the fire disaster situation is discharged, the main cabinet or the protection cabinet is probably damaged, and the worker can overhaul the cabinet body and the like on site; when the main cabinet is damaged and a worker does not arrive at the site, due to negative pressure in the air containing cavity, first protective gas in the main cabinet gradually leaks, air pressure in the main cabinet decreases, air pressure in the air containing cavity gradually increases until the air pressures in the main cabinet and the air containing cavity are equal, in the process, under the action of elastic force of the elastic bag, a first push-pull end of a first push-pull rod abuts against the elastic swinging electric contact piece to separate the elastic swinging electric contact piece from the fixed electric contact piece, the circuit is disconnected, at the moment, a circuit on-off detector (specifically, an ammeter) transmits a circuit on-off signal to a controller, and transmits the signal to a remote control terminal of a remote control center through a wireless signal transmitting and receiving device, the worker can overhaul the cabinet body and the like on site, but all electric components are still protected in the protective gas; when the protection cabinet is damaged and a worker does not arrive at the site, due to negative pressure in the air containing cavity, outside air can gradually enter the air containing cavity, air pressure in the air containing cavity gradually rises until the air pressure in the main cabinet is equal to that in the air containing cavity, in the process, under the elastic action of the elastic bag, the first push-pull end of the first push-pull rod abuts against the elastic swinging electric contact piece to separate the elastic swinging electric contact piece from the fixed electric contact piece, the circuit is disconnected, the circuit on-off detector transmits a circuit on-off signal to the controller, the signal is transmitted to a remote control terminal of a remote control center through the wireless signal transmitting and receiving device, and the worker can overhaul the cabinet body and the like on the site. Such intelligent monitoring can ensure that electrical components carries out work under the protection of protection cabinet, and stability and security are higher, avoid rainwater, flood or water smoke etc. to enter into the cabinet body completely and cause the damage to electrical components, avoid arousing the circumstances such as more serious conflagration, electric shock under the circumstances of not cutting off the power supply in time simultaneously. The second temperature detector detects the temperature in the cabinet body and transmits a temperature signal to the controller, the controller transmits the signal to a remote control terminal of a remote control center through a wireless signal transmitting and receiving device, the remote control terminal is provided with a corresponding wireless signal transmitting and receiving device, when the temperature reaches a set high-point value, each electric component can be damaged, and the controller controls the auxiliary switch mechanism to cut off the circuit; the control center staff can send control instructions to the controller through the remote control terminal according to actual conditions, but under normal conditions, the control center staff is only independently controlled by the controller. It is emphasized that the monitoring system is provided with an independent power supply circuit outside the main circuit, the independent power supply circuit comprises a charging power supply, and the charging power supply can be charged by the main circuit, so that the monitoring device can work independently and stably, and a control center can effectively monitor the high-voltage switch cabinet in real time. Certainly, the second push-pull rod can be driven by a worker to abut against the elastic bag by manually operating the manual operating mechanism according to actual complex conditions, and the first push-pull end of the first push-pull rod abuts against the elastic swinging electric contact piece under the driving of the elastic bag, so that the elastic swinging electric contact piece is separated from the fixed electric contact piece, and a circuit is disconnected; on the contrary, when the operator reversely operates the manual operation mechanism, the circuit can be closed. Compared with the prior art, the remote intelligent monitoring system for the transformer can carry out remote intelligent monitoring and control on the transformer and the control circuit thereof, and ensures that the transformer and the control circuit thereof stably and safely work.
Drawings
FIG. 1 is a first partial cross-sectional structural schematic view of the present invention;
fig. 2 is a second partial sectional structural view of the present invention.
In the figure:
10-Transformer 101-Natural ester
11-main cabinet 111-first air inlet valve 112-first air outlet valve 113-first mounting plate 12-protection cabinet 121-second air inlet valve 122-second air outlet valve 123-second mounting plate 13-air containing cavity 131-baffle 14-first sealing door 141-first sealing gasket 15-second sealing door 151-second sealing gasket 16-supporting rod
21-first isolator 22-second isolator
231-switch actuator 2311-fixed electric contact 2312-elastic swinging electric contact
2321-first push-pull rod 2322-elastic bag 23221-connecting top plate 2323-second push-pull rod 23241-rotary disk 23242-handle 232421-first limit stop 232422-second limit stop 23243-rocker 232431-first spindle 232432-second spindle
24-circuit breaker 25-auxiliary switch mechanism
31-air pressure detector 32-second temperature detector.
Detailed Description
In order to further explain the technical solution of the present invention, the following detailed description is given by way of specific examples.
The remote intelligent monitoring system of the transformer of the invention, as shown in fig. 1 and 2, comprises a transformer 10 and a monitoring system for monitoring the transformer 10; the transformer 10 and the monitoring system are connected together in a wireless or wired manner; the transformer 10 comprises an oil-immersed transformer 10 main body, and the insulating oil of the oil-immersed transformer 10 main body is natural ester 101; the monitoring system comprises a first temperature detector and a breakdown detector which are arranged in the transformer 10, and monitoring equipment which is arranged outside the transformer 10; the monitoring equipment comprises a cabinet body and an electric component arranged in the cabinet body; the monitoring system also comprises a monitoring device for monitoring the electric components; the cabinet body comprises a main cabinet 11 for containing electric components and a protective cabinet 12 coated outside the main cabinet 11; the main cabinet 11 and the protection cabinet 12 are sealed box bodies; an air containing cavity 13 is formed between the main cabinet 11 and the protection cabinet 12, and gaps are formed between corresponding side walls of the main cabinet 11 and the protection cabinet 12; the main cabinet 11 is filled with a first protective gas under normal pressure, the gas containing cavity 13 is filled with a second protective gas under the pressure lower than the pressure of the first protective gas and the pressure of the external atmosphere, and the first protective gas and the second protective gas are both nitrogen or carbon dioxide; the main cabinet 11 is provided with a first air inlet valve 111 and a first air outlet valve 112, and the protection cabinet 12 is provided with a second air inlet valve 121 and a second air outlet valve 122; the monitoring device comprises an air pressure detector 31 and a second temperature detector 32 which are arranged in the air containing cavity 13, a circuit on-off detector arranged in the main cabinet 11, a controller arranged outside the cabinet body and a remote control terminal of the remote control controller; the electrical components include a first disconnector connected to the input electric wire, a second disconnector connected to the output electric wire, a main switching mechanism connected to the second disconnector, a circuit breaker 24 connected to the first disconnector 21, and a sub-switching mechanism 25 connected between the main switching mechanism and the circuit breaker 24; the sub-switching mechanism 25 is controlled by the controller; the first isolating switch, the circuit breaker 24, the auxiliary switch mechanism 25, the main switch mechanism and the second isolating switch are connected in sequence through conducting wires;
the main switch mechanism comprises a switch actuating mechanism 231 and a switch actuating mechanism for driving the switch actuating mechanism 231 to open and close; the switch actuator 231 includes a fixed electric contact 2311 electrically connected to the circuit breaker 24, and an elastic oscillating electric contact 2312 electrically connected to the second disconnector and electrically contacted to the fixed electric contact 2311; the fixed electric contact 2311 is positioned between the elastic swing electric contact 2312 and the switch power mechanism;
the main cabinet 11 comprises a first mounting plate 113 for mounting a switch power mechanism, and the protection cabinet 12 comprises a second mounting plate 123 corresponding to the first mounting plate 113; the switch power mechanism comprises a first push-pull rod 2321 which props against the elastic swinging electric contact piece 2312 to swing and is separated from the fixed electric contact piece 2311, an elastic bag 2322 which is arranged on the first mounting plate 113 and drives the first push-pull rod 2321 to move horizontally, a second push-pull rod 2323 which drives the elastic bag 2322, and a manual operation mechanism which drives the second push-pull rod 2323; the first mounting plate 113 is formed with a first through hole for mounting the elastic capsule 2322, and the second mounting plate 123 is formed with a sealing sliding hole for the second push-pull rod 2323 to slide sealingly. In the actual working process, the monitoring system monitors and controls the temperature state of the transformer 10; the first temperature detector detects the temperature in the transformer 10 and transmits a temperature signal to the controller, the controller transmits the signal to a remote control terminal of a remote control center through a wireless signal transmitting and receiving device, the remote control terminal is provided with a corresponding wireless signal transmitting and receiving device, and when the first temperature detector detects that the temperature in the transformer 10 is higher than a set value, the controller controls the secondary switch mechanism 25 (specifically, a remote switch) to cut off the circuit; the breakdown detector (specifically, a voltmeter) detects the voltage of the main components such as the coil of the transformer 10 and transmits a voltage signal to the controller, the controller transmits the signal to a remote control terminal of a remote control center through a wireless signal transmitting and receiving device, and when the breakdown detector detects that the main components such as the coil of the transformer 10 are broken down (such as the voltage is suddenly reduced), the controller controls the auxiliary switching mechanism 25 to cut off the circuit; in the initial state of the monitoring device, under the elastic force of the elastic bag 2322, the first push-pull end of the first push-pull rod 2321 abuts against the elastic swinging electrical contact 2312, so that the elastic swinging electrical contact 2312 is separated from the fixed electrical contact 2311, and the circuit is disconnected. Filling nitrogen or carbon dioxide gas into the main cabinet 11 through the first air inlet valve 111 by using an air charging device, discharging impurity gases such as air, water vapor and the like through the first air outlet valve 112, and then closing the first air outlet valve 112 to fill the main cabinet 11 with first protective gas; then, the inflation device is used to fill nitrogen or carbon dioxide gas into the air containing cavity 13 through the second air inlet valve 121, so that the impurity gases such as air, water vapor and the like are exhausted from the second air outlet valve 122, then the second air outlet valve 122 is closed, and a part of the second protective gas in the air containing cavity 13 is pumped out, so that the pressure of the second protective gas is lower than the pressure of the first protective gas and the pressure of the outside atmosphere, so that negative pressure is formed in the air containing cavity 13, the elastic bag 2322 swells towards the air containing cavity 13, the first push-pull rod 2321 is driven to move towards the direction of the first connecting end, and the elastic swinging electric contact 2312 is in contact conduction with the fixed electric contact 2311. The nitrogen or carbon dioxide in the main cabinet 11 is protective gas, and can protect each electric component, prevent oxidation and electric spark, prolong the service life and avoid accidents such as fire and the like; and the nitrogen or carbon dioxide gas in the gas containing cavity 13 can be mixed with the nitrogen or carbon dioxide gas in the main cabinet 11 under the condition that the main cabinet 11 leaks, and is still protective gas. The air pressure detector 31 detects the air pressure in the air containing cavity 13 and transmits a pressure signal to the controller, the controller transmits the signal to a remote control terminal of a remote control center through a wireless signal transmitting and receiving device, when the air pressure is higher than a set value, the air pressure is probably because the ambient temperature is too high, or the main cabinet 11 or the protection cabinet 12 is damaged, a worker can judge according to the actual situation, for example, whether a fire disaster occurs can be judged according to whether the temperature of the second temperature detector 32 is too high, if the fire disaster situation is discharged, the main cabinet 11 or the protection cabinet 12 is probably damaged, and at the moment, the worker can overhaul the cabinet body and the like on site; when the main cabinet 11 is damaged and a worker does not arrive at the site, due to negative pressure in the air containing cavity 13, first protective gas in the main cabinet 11 gradually leaks, air pressure in the main cabinet 11 decreases, air pressure in the air containing cavity 13 gradually increases until the air pressures in the main cabinet 11 and the air containing cavity 13 are equal, in the process, under the action of the elastic force of the elastic bag 2322, the first push-pull end of the first push-pull rod 2321 abuts against the elastic swinging electric contact 2312 to separate the elastic swinging electric contact 2312 from the fixed electric contact 2311, and a circuit is disconnected, at the moment, a circuit on-off detector (specifically, an ammeter) transmits a circuit on-off signal to a controller, and transmits the signal to a remote control terminal of a remote control center through a wireless signal transmitting and receiving device, the worker can overhaul the cabinet body and the like on site, but at the moment, all electric components are still protected in the protective gas; when the protection cabinet 12 is damaged and a worker does not arrive at the site, due to negative pressure in the air containing cavity 13, outside air can gradually enter the air containing cavity 13, air pressure in the air containing cavity 13 gradually rises until air pressure in the main cabinet 11 and the air containing cavity 13 are equal, in the process, under the action of the elastic force of the elastic bag 2322, the first push-pull end of the first push-pull rod 2321 abuts against the elastic swinging electric contact 2312, the elastic swinging electric contact 2312 is separated from the fixed electric contact 2311, a circuit is disconnected, at the moment, the circuit on-off detector transmits a circuit on-off signal to the controller, the signal is transmitted to a remote control terminal of a remote control center through a wireless signal transmitting and receiving device, and the worker can examine and repair the cabinet body and the like on the site. Such intelligent monitoring can ensure that electrical components carries out work under the protection of protection cabinet 12, and stability and security are higher, avoid rainwater, flood or water smoke etc. to enter into the cabinet body completely and cause the damage to electrical components, avoid arousing the circumstances such as more serious conflagration, electric shock under the circumstances of not cutting off the power supply in time simultaneously. The second temperature detector 32 detects the temperature in the cabinet body and transmits a temperature signal to the controller, the controller transmits the signal to a remote control terminal of a remote control center through a wireless signal transmitting and receiving device, the remote control terminal is provided with a corresponding wireless signal transmitting and receiving device, when the temperature reaches a set high point value, each electric component can be damaged, and the controller controls the auxiliary switch mechanism 25 to cut off the circuit; the control center staff can send control instructions to the controller through the remote control terminal according to actual conditions, but under normal conditions, the control center staff is only independently controlled by the controller. It is emphasized that the monitoring system is provided with an independent power supply circuit outside the main circuit, the independent power supply circuit comprises a charging power supply, and the charging power supply can be charged by the main circuit, so that the monitoring device can work independently and stably, and a control center can effectively monitor the high-voltage switch cabinet in real time. Certainly, the worker can manually operate the manual operating mechanism according to actual complex conditions to drive the second push-pull rod 2323 to abut against the elastic bag 2322, and under the driving of the elastic bag 2322, the first push-pull end of the first push-pull rod 2321 abuts against the elastic swinging electric contact 2312, so that the elastic swinging electric contact 2312 is separated from the fixed electric contact 2311, and the circuit is disconnected; on the contrary, when the operator reversely operates the manual operation mechanism, the circuit can be closed. And the first push-pull rod 2321 is more safely in contact with the elastic swing electric contact 2312.
Preferably, the first push-pull rod 2321 has a first push-pull end facing the elastic swinging electrical contact 2312, and a first connection end facing the center of the elastic bag 2322 and connected with the elastic bag 2322; a connecting top plate 23221 connected with the first connecting end is arranged in the center of the elastic bag 2322; the second push-pull rod 2323 has a second push-pull end facing the connecting top plate 23221, and a second connecting end extending out of the sealed sliding aperture and connected to the manual operating mechanism. In the actual working process of the invention, the elastic capsule 2322 drives the first push-pull rod 2321 to move by connecting the top plate 23221, and the second push-pull rod 2323 drives the elastic capsule 2322 by abutting against the connecting top plate 23221, so that the force transmission is more stable and the movement is smoother.
Preferably, a baffle 131 which is blocked outside the elastic capsule 2322 is arranged in the air accommodating cavity 13, the baffle 131 is connected with the edge of the first through hole, a sliding through hole which corresponds to the connecting top plate 23221 and is used for the second push-pull rod 2323 to slide through is formed in the baffle 131, the diameter of the sliding through hole is smaller than that of the connecting top plate 23221, and the structure can ensure that the connecting top plate 23221 cannot enter the sliding through hole, so that the sliding through hole can limit and block the connecting top plate 23221; and a gap is formed between the inner wall of the sliding through hole and the circumferential surface of the second push-pull rod 2323, the gap can allow the second shielding gas to flow freely, and negative pressure cannot occur in the sliding through hole by the second push-pull rod 2323. In the actual working process, when the elastic capsule 2322 bulges outwards, the baffle 131 can limit and resist the elastic capsule 2322, so that the elastic capsule 2322 is prevented from being damaged due to excessive deformation, and meanwhile, the elastic capsule 2322 can be kept at the same position within a certain pressure floating range of the first protective gas, so that the structure is more stable and reliable.
Preferably, the manual operating mechanism includes a rotating plate 23241, a handle 23242 for wrenching the rotating plate 23241 to rotate, and a rocking bar 23243 connected between the rotating plate 23241 and the second push-pull rod 2323; the rocking bar 23243 has a first pivot end pivotally connected to the second connection end via the first rotation shaft 232431, and a second pivot end pivotally connected to the rotating plate 23241 via the second rotation shaft 232432. In the actual working process, when the current is manually cut off by a worker, the handle 23242 is pulled to rotate the turntable 23241 downwards, the second rotating shaft 232432 drives the rocker 23243 to support the first rotating shaft 232431, the first rotating shaft 232431 drives the second push-pull rod 2323 to move towards the elastic bag 2322, the elastic bag 2322 drives the first push-pull end to abut against the elastic swinging electric contact 2312, so that the elastic swinging electric contact 2312 is separated from the fixed electric contact 2311, and the circuit is disconnected; on the contrary, when the worker reversely pulls the handle 23242 to rotate the turntable 23241 upward, the second rotating shaft 232432 drives the rocker 23243 to pull the first rotating shaft 232431, the first rotating shaft 232431 drives the second push-pull rod 2323 to move in a direction away from the elastic bag 2322, under the pressure of the first protective gas on the elastic bag 2322, the elastic bag 2322 bulges outward and drives the first push-pull rod 2321 to move in a direction of the first connecting end, the first push-pull end does not abut against the elastic swinging electric contact 2312 any more, and the elastic swinging electric contact 2312 is gradually contacted with the fixed electric contact 2311, so that the circuit is closed. Preferably, the height of the second pivoting end is greater than that of the first pivoting end, so that the rotating disc 23241 is supported by the upward oblique supporting force of the rocking bar 23243 to keep the rotating disc 23241 in an upward swinging state.
Preferably, the axis of the second rotating shaft 232432 is in the same horizontal plane as the axis of the rotating shaft, and this structure enables the rotating disc 23241 to receive the supporting force of the rocking bar 23243 obliquely upward after rotating the circuit breaking device downward or rotating the circuit closing device upward, so as to facilitate the rotating disc 23241 to maintain a corresponding state, and avoid the dangerous situations such as automatic return. And handle 23242 is provided with a first limit stop 232421 above turntable 23241 and a second limit stop 232422 below turntable 23241.
Preferably, the first mounting plate 113 is formed with a first operation port provided with the first sealing door 14; the second mounting plate 123 is formed with a second operation port corresponding to the first operation port, and the second operation port is provided with a second seal door 15; the first sealing door 14 is arranged at the inner side of the operation opening and is connected with the edge of the first operation opening through a hinge to realize inward opening; the second sealing door 15 is arranged at the outer side of the second operation opening and is connected with the edge of the second operation opening through a hinge to realize outward opening; the first sealing door 14 has a first sealing edge in sealing contact with the edge of the first operation opening, the first sealing edge being provided with a first gasket 141; the second sealing door 15 has a second sealing edge in sealing contact with the edge of the second operation opening, and the second sealing edge is provided with a second gasket 151. In the actual working process of the invention, the first sealing door 14 can receive the pressure of the first protective gas to the gas containing cavity, so that the edge of the first sealing door 14 and the edge of the first operation opening are tightly sealed by the first sealing gasket 141 in a pre-tightening way, and the sealing effect is ensured. The second sealing door 15 is provided to facilitate opening. The staff can open and close first sealing door 14 and second sealing door 15 through the door handle to carry out dismouting and maintenance to inside electrical components and parts and monitoring device etc. through first operation mouth and second operation mouth.
Preferably, a support bar 16 is provided between each corresponding side wall of the main cabinet 11 and the protective cabinet 12. The support rod 16 can maintain the structure of the air-containing chamber 13 and enhance the overall structural stability.
Preferably, the first push-pull rod 2321, the second push-pull rod 2323 and the connecting top plate 23221 are made of an insulating material, such as plastic. In the actual working process, the high voltage of the main line where the first protective gas is located cannot be transmitted to the external cabinet through the first push-pull rod 2321, the second push-pull rod 2323 and the connecting top plate 23221, so that the high voltage is completely isolated from workers and the masses, and the safety is ensured.
Preferably, the first air inlet valve 111 is arranged on the upper side wall of the main cabinet 11 and at a position close to the first sealing door 14, so that the first sealing door 14 and the second sealing door 15 can be opened and then the air can be filled by the first air inlet valve 111, and the first air outlet valve 112 is arranged at the lower end of the first mounting plate 113; the second air inlet valve 121 is disposed on the upper side wall of the protection cabinet 12, and the second air outlet valve 122 is disposed at the lower end of the second mounting plate 123. Preferably, the first inlet valve 111, the first outlet valve 112, the second inlet valve 121 and the second outlet valve 122 are provided with one-way valves.
Preferably, a guide support plate formed by guiding the first push-pull rod 2321 is disposed in the cabinet body, and the guide support plate is formed with a guide sliding hole through which the first push-pull rod 2321 slides.
Preferably, the cabinet body further comprises an outer cabinet covering the manual operating mechanism, and the outer cabinet is also provided with an outer door. In the actual working process, the outer cabinet can protect the manual operating mechanism, and workers can operate the manual operating mechanism through the outer door. The specific structure may be that the first limit stopper 232421 and the second limit stopper 232422 are both disposed on the side wall of the outer cabinet.
Preferably, the inner side wall of the second mounting plate 123 is further provided with a guiding stopper for guiding the second push-pull rod 2323, and the guiding stopper is formed with a sealing sliding through hole for the second push-pull rod 2323 to pass through in a sealing sliding manner.
The product form of the present invention is not limited to the embodiments and examples shown in the present application, and any suitable changes or modifications of the similar ideas should be made without departing from the patent scope of the present invention.
Claims (7)
1. A remote intelligent monitoring system of a transformer comprises the transformer and a monitoring system for monitoring the transformer; the transformer and the monitoring system are connected together in a wireless or wired mode; the transformer comprises an oil-immersed transformer main body, wherein the insulating oil of the oil-immersed transformer main body is natural ester; the monitoring system comprises a first temperature detector, a breakdown detector and monitoring equipment, wherein the first temperature detector and the breakdown detector are arranged in the transformer, and the monitoring equipment is arranged outside the transformer; the monitoring equipment comprises a cabinet body and an electric component arranged in the cabinet body; the method is characterized in that: the monitoring system also comprises a monitoring device for monitoring the electric component; the cabinet body comprises a main cabinet for containing the electric components and a protection cabinet coated outside the main cabinet; the main cabinet and the protection cabinet are sealed box bodies; an air containing cavity is formed between the main cabinet and the protection cabinet, and gaps are formed between corresponding side walls of the main cabinet and the protection cabinet; the main cabinet is filled with first protective gas at normal pressure, the gas containing cavity is filled with second protective gas with the gas pressure smaller than the gas pressure of the first protective gas and the external atmospheric pressure, and the first protective gas and the second protective gas are both nitrogen or carbon dioxide gas; the main cabinet is provided with a first air inlet valve and a first air outlet valve, and the protection cabinet is provided with a second air inlet valve and a second air outlet valve; the monitoring device comprises an air pressure detector, a second temperature detector, a circuit on-off detector, a controller and a remote control terminal, wherein the air pressure detector and the second temperature detector are arranged in the air accommodating cavity; the electric components comprise a first isolating switch connected with an input electric wire, a second isolating switch connected with an output electric wire, a main switch mechanism connected with the second isolating switch, a circuit breaker connected with the first isolating switch, and an auxiliary switch mechanism connected between the main switch mechanism and the circuit breaker; the auxiliary switch mechanism is controlled by the controller; the first isolating switch, the circuit breaker, the auxiliary switch mechanism, the main switch mechanism and the second isolating switch are connected in sequence through conducting wires;
the main switch mechanism comprises a switch actuating mechanism and a switch actuating mechanism for driving the switch actuating mechanism to open and close; the switch actuating mechanism comprises a fixed electric contact piece electrically connected with the circuit breaker and an elastic swinging electric contact piece electrically connected with the second disconnecting switch and electrically contacted with the fixed electric contact piece; the fixed electric contact is positioned between the elastic swing electric contact and the switch power mechanism;
the main cabinet comprises a first mounting plate for mounting the switch power mechanism, and the protection cabinet comprises a second mounting plate corresponding to the first mounting plate; the switch power mechanism comprises a first push-pull rod which props against the elastic swinging electric contact piece to swing and is separated from the fixed electric contact piece, an elastic bag which is arranged on the first mounting plate and drives the first push-pull rod to move horizontally, a second push-pull rod which drives the elastic bag, and a manual operation mechanism which drives the second push-pull rod; the first mounting plate is provided with a first through hole for mounting the elastic bag, and the second mounting plate is provided with a sealing sliding hole for the second push-pull rod to slide in a sealing manner.
2. The remote intelligent monitoring system of the transformer according to claim 1, characterized in that: the first push-pull rod is provided with a first push-pull end facing the elastic swing electric contact piece and a first connecting end facing the center of the elastic bag and connected with the elastic bag; a connecting top plate connected with the first connecting end is arranged in the center of the elastic bag; the second push-pull rod is provided with a second push-pull end facing the connecting top plate and a second connecting end extending out of the sealing sliding hole and connected with the manual operating mechanism.
3. The remote intelligent monitoring system of the transformer according to claim 2, characterized in that: the air containing cavity is internally provided with a baffle plate which is blocked outside the elastic bag, the baffle plate is connected with the edge of the first through hole, the baffle plate is provided with a sliding through hole which corresponds to the connecting top plate and is used for the second push-pull rod to slide through, the diameter of the sliding through hole is smaller than that of the connecting top plate, and a gap is formed between the inner wall of the sliding through hole and the peripheral surface of the second push-pull rod.
4. The remote intelligent monitoring system of the transformer according to claim 3, characterized in that: the manual operating mechanism comprises a turntable, a handle for pulling the turntable to rotate, and a rocker connected between the turntable and the second push-pull rod; the rocker is provided with a first pivoting end pivoted with the second connecting end through a first rotating shaft and a second pivoting end pivoted with the rotary disc through a second rotating shaft.
5. The remote intelligent monitoring system of the transformer according to claim 4, characterized in that: the axis of the second rotating shaft and the axis of the rotating shaft are in the same horizontal plane, and the handle is provided with a first limit stop block above the rotating disc and a second limit stop block below the rotating disc.
6. The remote intelligent monitoring system of the transformer according to claim 5, characterized in that: a first operation opening is formed in the first mounting plate, and a first sealing door is arranged at the first operation opening; a second operation opening corresponding to the first operation opening is formed in the second mounting plate, and a second sealing door is arranged at the second operation opening; the first sealing door is positioned on the inner side of the operation opening and is connected with the edge of the first operation opening through a hinge to realize inward opening; the second sealing door is positioned at the outer side of the second operation opening and is connected with the edge of the second operation opening through a hinge to realize outward opening; the first sealing door is provided with a first sealing edge which is in sealing contact with the edge of the first operation opening, and a first sealing gasket is arranged on the first sealing edge; the second sealing door is provided with a second sealing edge which is in sealing contact with the edge of the second operation opening, and a second sealing gasket is arranged on the second sealing edge.
7. The remote intelligent monitoring system of the transformer according to claim 6, characterized in that: and a support rod is arranged between each corresponding side wall of the main cabinet and the protection cabinet.
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| CN201910061625.1A CN109802488B (en) | 2019-01-23 | 2019-01-23 | Remote intelligent monitoring system of transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910061625.1A CN109802488B (en) | 2019-01-23 | 2019-01-23 | Remote intelligent monitoring system of transformer |
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| CN109802488A CN109802488A (en) | 2019-05-24 |
| CN109802488B true CN109802488B (en) | 2020-11-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110888002A (en) * | 2019-10-11 | 2020-03-17 | 大唐水电科学技术研究院有限公司 | Distribution transformer health assessment method |
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|---|---|---|---|---|
| CN101414509A (en) * | 2007-10-15 | 2009-04-22 | 三菱电机株式会社 | Transformer for gas insulation instrument |
| CN203311986U (en) * | 2013-06-21 | 2013-11-27 | 浙江申工变压器制造有限公司 | Oil-immersed transformer |
| CN105720502A (en) * | 2016-03-29 | 2016-06-29 | 河北卓越电气有限责任公司 | Enclosed clean and efficient cooling power cabinet |
| CN107464657A (en) * | 2016-07-25 | 2017-12-12 | 蓉中电气设备有限公司 | A kind of separation type dry-type transformer case |
| CN207517485U (en) * | 2017-09-27 | 2018-06-19 | 武汉泽电新材料有限公司 | A kind of natural esters insulating oil distribution transformer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101541852B1 (en) * | 2014-07-31 | 2015-08-05 | 주식회사 동남종합중전기 | The Protection and Distribution Panel For Transformer Equipment With Dehumidifying and Cooling Device |
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2019
- 2019-01-23 CN CN201910061625.1A patent/CN109802488B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101414509A (en) * | 2007-10-15 | 2009-04-22 | 三菱电机株式会社 | Transformer for gas insulation instrument |
| CN203311986U (en) * | 2013-06-21 | 2013-11-27 | 浙江申工变压器制造有限公司 | Oil-immersed transformer |
| CN105720502A (en) * | 2016-03-29 | 2016-06-29 | 河北卓越电气有限责任公司 | Enclosed clean and efficient cooling power cabinet |
| CN107464657A (en) * | 2016-07-25 | 2017-12-12 | 蓉中电气设备有限公司 | A kind of separation type dry-type transformer case |
| CN207517485U (en) * | 2017-09-27 | 2018-06-19 | 武汉泽电新材料有限公司 | A kind of natural esters insulating oil distribution transformer |
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| CN109802488A (en) | 2019-05-24 |
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Address after: No.88 xiacuo, Shuikou village, Meishan Town, Nan'an City, Quanzhou City, Fujian Province Applicant after: RONGZHONG ELECTRICAL Co.,Ltd. Address before: 362321 Rongzhong Village, Meishan Town, Nanan City, Quanzhou City, Fujian Province Applicant before: RONGZHONG ELECTRICAL Co.,Ltd. |
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