CN104269825A - Transformer ultra-high voltage overvoltage insulation disconnecting link rod automatic switching device and control method - Google Patents
Transformer ultra-high voltage overvoltage insulation disconnecting link rod automatic switching device and control method Download PDFInfo
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- CN104269825A CN104269825A CN201410553012.7A CN201410553012A CN104269825A CN 104269825 A CN104269825 A CN 104269825A CN 201410553012 A CN201410553012 A CN 201410553012A CN 104269825 A CN104269825 A CN 104269825A
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Abstract
The invention discloses a transformer ultra-high voltage overvoltage insulation disconnecting link rod automatic switching device and a control method. The device comprises a transformer and an oil level sensor arranged in the transformer, the oil level sensor is connected with an automatic oil injection mechanism, a temperature sensor connected with a programmable logic controller is arranged on the inner wall of the transformer and connected with an automatic switching-out mechanism, the automatic switching-out mechanism comprises an arc-shaped rail which is arranged on a disconnecting link plate and is concentric with a disconnecting link hinge shaft, an arc-shaped sliding rail is arranged in the rail, one end of the arc-shaped sliding rail is connected with a disconnecting link insulation rod, teeth which are evenly distributed are arranged on the inner side of the arc-shaped sliding rail, a driving motor is arranged on the disconnecting link plate, a shaft of the driving motor is sleeved with a gear matched with the teeth on the inner side of the arc-shaped sliding rail, and a through hole through which the gear can make contact with the teeth on the inner side of the arc-shaped sliding rail is formed in one side of the arc-shaped rail.
Description
Technical field
The present invention relates to EHV transformer overvoltage protective device technical field, particularly a kind of transformer superhigh pressure overvoltage insulation disconnecting link bar automatic switching device and control method.
Background technology
Traditional oil-filled transformer only has device for monitoring oil level (as oil level indicator), and there is no low oil level trip protection device, therefore be subject to external force collision at transformer and cause the inclination of its fuel tank or leakage of oil, and oil tank of transformer because of problem of manufacturing qualities oil impregnate, transformer oil is made to drop to below minimum oil level line, when this situation is failed by related personnel's Timeliness coverage and is taken urgent measure, and oil level is too low can make transformer be in low oil level operation owing to patrolling and examining not in time, accelerate the aging of transformer, finally can there is the faults such as insulation breakdown or accident in transformer, the serious consequence even producing transformer damage and have a power failure in a big way.
Along with power system reform in-depth, electric power enterprise has entered people's Market Operation, no matter is from economic benefit or good service aspect, all has higher requirement to power supply reliability.Rural power grids are important component parts of whole electrical network, are responsible for the task into outskirts of a town and vast rural power service.Along with the development of rural economy, to produce and household electricity demand increases day by day, simultaneously due to industrial park, economic development zone etc. in succession on the outskirts of a town, rural area settles, also promotion need for electricity increases substantially.Although have very large change through upgrading of rural power grids rural power network framework than in the past, agricultural network grid structure is still weaker generally.Current step down side only installs air switch and earth leakage protective device, and when electric leakage and short circuit appear in circuit, air switch tripping, needs that electrician goes to scene to look into, power transmission.The equipment present when transformer overload temperature raises, without any safeguard measure, if manually operate a switch not in time, can only be waited transformer and burn out.After the contact of contactor and coil burn out, cause full court district to have a power failure, can restore electricity after also can only more renewing,
Understand according to the preliminary statistics, an electric company of medium county, summer, the Spring Festival and other high load capacities time burn about 20, transformer every year, and this situation is more and more outstanding, bring about great losses to power department, how to reduce, avoid contactor and transformer burn raising equipment dependability, ensure that power supply safety prevents from transformer from burning becoming a problem anxious to be resolved.
Summary of the invention
Technical problem to be solved by this invention is for the management and control of network distribution transformer intelligence, a kind of transformer superhigh pressure overvoltage insulation disconnecting link bar automatic switching device and control method are provided, can ensure that transformer normally runs, prevent transformer from burning, recover can automatically to push away lock normally at transformer temperature and oil level and power.
The technical solution adopted for the present invention to solve the technical problems is: a kind of transformer superhigh pressure overvoltage insulation disconnecting link bar automatic switching device, comprise transformer and be arranged on the fuel level sensor in transformer, described fuel level sensor is connected with automatic oiling mechanism, described transformer inwall arranges the temperature sensor be connected with Programmable Logic Controller, described temperature sensor is connected with and automatically winds up mechanism, the described mechanism that automatically winds up comprises the arc-shaped rail concentric with plug-in strip hinge be arranged on disconnecting link plate, circular arc slide rail is set in described track, one end of described circular arc slide rail is connected with plug-in strip insulating bar, the inner side of described circular arc slide rail arranges uniform teeth, described disconnecting link plate arranges drive motors, the axle of described drive motors is set with circular arc slide rail inside the gear that matches of teeth, described arc-shaped rail side is provided with the through hole contacted with the teeth inside circular arc slide rail for gear.
One end sealing of described arc-shaped rail, the bottom of this arc-shaped rail arranges osculum.
Arrange in described arc-shaped rail and prevent bite mechanism, this prevents from bite mechanism from comprising being symmetricly set on two lubrication holes of both sides, arc-shaped rail top, described lubrication hole place arranges the conduit be communicated with arc-shaped rail, described conduit is arranged the oil storage bottle be vertically connected with it, the sponge with teeth joint is set in described lubrication hole.
Described automatic oiling mechanism comprises the electromagnetically operated valve being arranged on and transformation wall is communicated with it, this electromagnetically operated valve is connected by holding wire with Programmable Logic Controller, described transformation wall is provided with and is communicated with oil inlet pipe with it, and described oil inlet pipe is connected with oil pump, and the suction pipe of described oil pump is communicated with oil storage pool.
Described disconnecting link plate top arranges arc-extinguishing mechanism, and described arc-extinguishing mechanism comprises air accumulator and is arranged on disconnecting link plate top and is positioned at the shower nozzle that disconnecting link closes place, and described shower nozzle passes through tubes connection with air accumulator, and described conduit arranges pressure-releasing electromagnetic valve.
Use said apparatus to carry out protecting the control method of transformer, comprise the following steps:
1) the oil level peak setting Programmable Logic Controller is a, and the oil level minimum of Programmable Logic Controller is b, and the temperature maximum simultaneously setting Programmable Logic Controller is 90 degree;
2) Programmable Logic Controller receives the information that fuel level sensor sends, if transformer oil level is lower than minimum, the while of Controlled by Programmable Controller operation of oil pump, Programmable Logic Controller opens the electromagnetically operated valve that transformer is closed, oil in oil storage pool is sent in transformer, when oil level in transformer is higher than set point a, Controlled by Programmable Controller oil pump and closed electromagnetic valve;
3) when the oil temperature in transformer more than 90 degree or/and when oil level in transformer is lower than b, Controlled by Programmable Controller drive motors works, and circular arc slide rail is rotated clockwise and is separated by disconnecting link instantaneously; Connect pressure-releasing electromagnetic valve while the work of Controlled by Programmable Controller drive motors, arc extinguishing gases is sprayed at disconnecting link contact position, prevents electric arc;
4) Programmable Logic Controller receives the information of temperature sensor and fuel level sensor transmission, if in transformer temperature lower than transformer oil level while 90 degree higher than minimum, Controlled by Programmable Controller drive motors works, and circular arc slide rail is rotated counterclockwise and is separated by disconnecting link instantaneously; Connect pressure-releasing electromagnetic valve while the work of Controlled by Programmable Controller drive motors, arc extinguishing gases is sprayed at disconnecting link contact position, prevents electric arc.
Compared with prior art, the invention has the beneficial effects as follows: in the transformer of the application, fuel level sensor is set, described fuel level sensor is connected with automatic oiling mechanism, described transformer inwall arranges the temperature sensor be connected with Programmable Logic Controller, described temperature sensor is connected with and automatically winds up mechanism, the described mechanism that automatically winds up comprises the arc-shaped rail concentric with plug-in strip hinge be arranged on disconnecting link plate, circular arc slide rail is set in described track, one end of described circular arc slide rail is connected with plug-in strip insulating bar, the inner side of described circular arc slide rail arranges uniform teeth, described disconnecting link plate arranges drive motors, the axle of described drive motors is set with circular arc slide rail inside the gear that matches of teeth, arc-shaped rail is concentric with plug-in strip hinge, circular arc slide rail can move at arc-shaped rail interior orientation, accurate for plug-in strip switching can be put in place, and switching speed is fast, effectively can avoid the generation of electric arc, described arc-shaped rail side is provided with the through hole contacted with the teeth inside circular arc slide rail for gear, and Programmable Logic Controller is built-in with timer, disconnection motor power after plug-in strip conjunction is closed, one end sealing of described arc-shaped rail, the bottom of this arc-shaped rail arranges osculum, prevents water inlet in track, even if the water inlet of track one end, track lowest part is provided with osculum and can be conveniently discharged by water, arrange in described arc-shaped rail and prevent bite mechanism, this prevents from bite mechanism from comprising being symmetricly set on two lubrication holes of both sides, arc-shaped rail top, described lubrication hole place arranges the conduit be communicated with arc-shaped rail, described conduit is arranged the oil storage bottle be vertically connected with it, sponge with teeth joint is set in described lubrication hole, teeth touch sponge lubricating oil and enter in teeth and track, and the effect playing self-lubricating ensures equipment normal operation, described automatic oiling mechanism comprises the electromagnetically operated valve being arranged on and transformation wall is communicated with it, this electromagnetically operated valve is connected by holding wire with Programmable Logic Controller, described transformation wall is provided with and is communicated with oil inlet pipe with it, described oil inlet pipe is connected with oil pump, the suction pipe of described oil pump is communicated with oil storage pool, prevent transformer oil starvation overload operation, damage transformer, described disconnecting link plate top arranges arc-extinguishing mechanism, described arc-extinguishing mechanism comprises air accumulator and is arranged on disconnecting link plate top and is positioned at the shower nozzle that disconnecting link closes place, and described shower nozzle passes through tubes connection with air accumulator, and described conduit arranges pressure-releasing electromagnetic valve, play the effect of arc extinguishing, prevent from causing fire.Inventor installs device of the present invention and adopts control method of the present invention on 100 transformers, through the test of 2 years, there is not primary fault in device of the present invention, not having a transformer to burn 2 years more, for Utilities Electric Co. saves immeasurable fund, importantly device of the present invention automatically can disconnect plug-in strip after transformer breaks down, transformer equipment can not be burnt, what is more important reaches set point and temperature lower than set point at transformer oil level, disconnecting link meeting automatic closing, manual operation is carried out without the need to electric power personnel, greatly reduce interruption duration, decrease the loss of producing to enterprise and the people, and in the face of same test job, traditional transformer 100 multiple stage summer, the Spring Festival and other high load capacities time burn about 20, transformer every year, and this situation is more and more outstanding, brings about great losses to power department.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the mechanism and prevent bite mechanism structure schematic diagram of automatically winding up of the present invention.
Embodiment
Embodiment 1: as Fig. 1, shown in 2, a kind of transformer superhigh pressure overvoltage insulation disconnecting link bar automatic switching device, the fuel level sensor 6 comprising transformer 1 and be arranged in transformer 1, described fuel level sensor 6 is connected with automatic oiling mechanism, described transformer 1 inwall arranges the temperature sensor 2 be connected with Programmable Logic Controller 5, described temperature sensor 2 is connected with and automatically winds up mechanism, the described mechanism that automatically winds up comprises the arc-shaped rail 7 concentric with plug-in strip hinge 14 be arranged on disconnecting link plate 10, in described track 7, circular arc slide rail 8 is set, one end of described circular arc slide rail 8 is connected with plug-in strip 15 insulating bar, the inner side of described circular arc slide rail 8 arranges uniform teeth 9, described disconnecting link plate 10 arranges drive motors 18 by support 16, the axle of described drive motors 18 is set with circular arc slide rail inside the gear 17 that matches of teeth, described arc-shaped rail 7 side is provided with the through hole 19 contacted with the teeth 9 inside circular arc slide rail 8 for gear 17.
Use said apparatus to carry out protecting the control method of transformer, comprise the following steps:
1) the oil level peak setting Programmable Logic Controller is a, and the oil level minimum of Programmable Logic Controller is b, and the temperature maximum simultaneously setting Programmable Logic Controller is 90 degree;
2) Programmable Logic Controller receives the information that fuel level sensor sends, if transformer oil level is lower than minimum, the while of Controlled by Programmable Controller operation of oil pump, Programmable Logic Controller opens the electromagnetically operated valve that transformer is closed, oil in oil storage pool is sent in transformer, when oil level in transformer is higher than set point a, Controlled by Programmable Controller oil pump and closed electromagnetic valve;
3) when the oil temperature in transformer more than 90 degree or/and when oil level in transformer is lower than b, Controlled by Programmable Controller drive motors works, and circular arc slide rail is rotated clockwise and is separated by disconnecting link instantaneously; Connect pressure-releasing electromagnetic valve while the work of Controlled by Programmable Controller drive motors, arc extinguishing gases is sprayed at disconnecting link contact position, prevents electric arc;
4) Programmable Logic Controller receives the information of temperature sensor and fuel level sensor transmission, if in transformer temperature lower than transformer oil level while 90 degree higher than minimum, Controlled by Programmable Controller drive motors works, and circular arc slide rail is rotated counterclockwise and is separated by disconnecting link instantaneously; Connect pressure-releasing electromagnetic valve while the work of Controlled by Programmable Controller drive motors, arc extinguishing gases is sprayed at disconnecting link contact position, prevents electric arc.
Compared with prior art, the invention has the beneficial effects as follows: in the transformer of the application, fuel level sensor is set, described fuel level sensor is connected with automatic oiling mechanism, described transformer inwall arranges the temperature sensor be connected with Programmable Logic Controller, described temperature sensor is connected with and automatically winds up mechanism, the described mechanism that automatically winds up comprises the arc-shaped rail concentric with plug-in strip hinge be arranged on disconnecting link plate, circular arc slide rail is set in described track, one end of described circular arc slide rail is connected with plug-in strip insulating bar, the inner side of described circular arc slide rail arranges uniform teeth, described disconnecting link plate arranges drive motors, the axle of described drive motors is set with circular arc slide rail inside the gear that matches of teeth, arc-shaped rail is concentric with plug-in strip hinge, circular arc slide rail can move at arc-shaped rail interior orientation, accurate for plug-in strip switching can be put in place, and switching speed is fast, effectively can avoid the generation of electric arc.
Embodiment 2: as Fig. 1, shown in 2, a kind of transformer superhigh pressure overvoltage insulation disconnecting link bar automatic switching device, the fuel level sensor 6 comprising transformer 1 and be arranged in transformer 1, described fuel level sensor 6 is connected with automatic oiling mechanism, described transformer 1 inwall arranges the temperature sensor 2 be connected with Programmable Logic Controller 5, described temperature sensor 2 is connected with and automatically winds up mechanism, the described mechanism that automatically winds up comprises the arc-shaped rail 7 concentric with plug-in strip hinge 14 be arranged on disconnecting link plate 10, in described track 7, circular arc slide rail 8 is set, one end of described circular arc slide rail 8 is connected with plug-in strip 15 insulating bar, the inner side of described circular arc slide rail 8 arranges uniform teeth 9, described disconnecting link plate 10 arranges drive motors 18 by support 16, the axle of described drive motors 18 is set with circular arc slide rail inside the gear 17 that matches of teeth, described arc-shaped rail 7 side is provided with the through hole 19 contacted with the teeth 9 inside circular arc slide rail 8 for gear 17.
One end sealing of described arc-shaped rail 7, the bottom of this arc-shaped rail 7 arranges osculum 20.
Use said apparatus to carry out protecting the control method of transformer, comprise the following steps:
1) the oil level peak setting Programmable Logic Controller is a, and the oil level minimum of Programmable Logic Controller is b, and the temperature maximum simultaneously setting Programmable Logic Controller is 90 degree;
2) Programmable Logic Controller receives the information that fuel level sensor sends, if transformer oil level is lower than minimum, the while of Controlled by Programmable Controller operation of oil pump, Programmable Logic Controller opens the electromagnetically operated valve that transformer is closed, oil in oil storage pool is sent in transformer, when oil level in transformer is higher than set point a, Controlled by Programmable Controller oil pump and closed electromagnetic valve;
3) when the oil temperature in transformer more than 90 degree or/and when oil level in transformer is lower than b, Controlled by Programmable Controller drive motors works, and circular arc slide rail is rotated clockwise and is separated by disconnecting link instantaneously; Connect pressure-releasing electromagnetic valve while the work of Controlled by Programmable Controller drive motors, arc extinguishing gases is sprayed at disconnecting link contact position, prevents electric arc;
4) Programmable Logic Controller receives the information of temperature sensor and fuel level sensor transmission, if in transformer temperature lower than transformer oil level while 90 degree higher than minimum, Controlled by Programmable Controller drive motors works, and circular arc slide rail is rotated counterclockwise and is separated by disconnecting link instantaneously; Connect pressure-releasing electromagnetic valve while the work of Controlled by Programmable Controller drive motors, arc extinguishing gases is sprayed at disconnecting link contact position, prevents electric arc.
Compared with prior art, the invention has the beneficial effects as follows: in the transformer of the application, fuel level sensor is set, described fuel level sensor is connected with automatic oiling mechanism, described transformer inwall arranges the temperature sensor be connected with Programmable Logic Controller, described temperature sensor is connected with and automatically winds up mechanism, the described mechanism that automatically winds up comprises the arc-shaped rail concentric with plug-in strip hinge be arranged on disconnecting link plate, circular arc slide rail is set in described track, one end of described circular arc slide rail is connected with plug-in strip insulating bar, the inner side of described circular arc slide rail arranges uniform teeth, described disconnecting link plate arranges drive motors, the axle of described drive motors is set with circular arc slide rail inside the gear that matches of teeth, arc-shaped rail is concentric with plug-in strip hinge, circular arc slide rail can move at arc-shaped rail interior orientation, accurate for plug-in strip switching can be put in place, and switching speed is fast, effectively can avoid the generation of electric arc, described arc-shaped rail side is provided with the through hole contacted with the teeth inside circular arc slide rail for gear, and Programmable Logic Controller is built-in with timer, disconnection motor power after plug-in strip conjunction is closed, one end sealing of described arc-shaped rail, the bottom of this arc-shaped rail arranges osculum, prevents water inlet in track, even if the water inlet of track one end, track lowest part is provided with osculum and can be conveniently discharged by water.
Embodiment 3: as Fig. 1, shown in 2, a kind of transformer superhigh pressure overvoltage insulation disconnecting link bar automatic switching device, the fuel level sensor 6 comprising transformer 1 and be arranged in transformer 1, described fuel level sensor 6 is connected with automatic oiling mechanism, described transformer 1 inwall arranges the temperature sensor 2 be connected with Programmable Logic Controller 5, described temperature sensor 2 is connected with and automatically winds up mechanism, the described mechanism that automatically winds up comprises the arc-shaped rail 7 concentric with plug-in strip hinge 14 be arranged on disconnecting link plate 10, in described track 7, circular arc slide rail 8 is set, one end of described circular arc slide rail 8 is connected with plug-in strip 15 insulating bar, the inner side of described circular arc slide rail 8 arranges uniform teeth 9, described disconnecting link plate 10 arranges drive motors 18 by support 16, the axle of described drive motors 18 is set with circular arc slide rail inside the gear 17 that matches of teeth, described arc-shaped rail 7 side is provided with the through hole 19 contacted with the teeth 9 inside circular arc slide rail 8 for gear 17.
One end sealing of described arc-shaped rail 7, the bottom of this arc-shaped rail 7 arranges osculum 20.
Arrange in described arc-shaped rail 7 and prevent bite mechanism, this prevents from bite mechanism from comprising being symmetricly set on two lubrication holes of both sides, arc-shaped rail 7 top, described lubrication hole place arranges the conduit 13 be communicated with arc-shaped rail, described conduit 13 is arranged the oil storage bottle 11 be vertically connected with it, the sponge 12 with teeth joint is set in described lubrication hole.
Use said apparatus to carry out protecting the control method of transformer, comprise the following steps:
1) the oil level peak setting Programmable Logic Controller is a, and the oil level minimum of Programmable Logic Controller is b, and the temperature maximum simultaneously setting Programmable Logic Controller is 90 degree;
2) Programmable Logic Controller receives the information that fuel level sensor sends, if transformer oil level is lower than minimum, the while of Controlled by Programmable Controller operation of oil pump, Programmable Logic Controller opens the electromagnetically operated valve that transformer is closed, oil in oil storage pool is sent in transformer, when oil level in transformer is higher than set point a, Controlled by Programmable Controller oil pump and closed electromagnetic valve;
3) when the oil temperature in transformer more than 90 degree or/and when oil level in transformer is lower than b, Controlled by Programmable Controller drive motors works, and circular arc slide rail is rotated clockwise and is separated by disconnecting link instantaneously; Connect pressure-releasing electromagnetic valve while the work of Controlled by Programmable Controller drive motors, arc extinguishing gases is sprayed at disconnecting link contact position, prevents electric arc;
4) Programmable Logic Controller receives the information of temperature sensor and fuel level sensor transmission, if in transformer temperature lower than transformer oil level while 90 degree higher than minimum, Controlled by Programmable Controller drive motors works, and circular arc slide rail is rotated counterclockwise and is separated by disconnecting link instantaneously; Connect pressure-releasing electromagnetic valve while the work of Controlled by Programmable Controller drive motors, arc extinguishing gases is sprayed at disconnecting link contact position, prevents electric arc.
Compared with prior art, the invention has the beneficial effects as follows: in the transformer of the application, fuel level sensor is set, described fuel level sensor is connected with automatic oiling mechanism, described transformer inwall arranges the temperature sensor be connected with Programmable Logic Controller, described temperature sensor is connected with and automatically winds up mechanism, the described mechanism that automatically winds up comprises the arc-shaped rail concentric with plug-in strip hinge be arranged on disconnecting link plate, circular arc slide rail is set in described track, one end of described circular arc slide rail is connected with plug-in strip insulating bar, the inner side of described circular arc slide rail arranges uniform teeth, described disconnecting link plate arranges drive motors, the axle of described drive motors is set with circular arc slide rail inside the gear that matches of teeth, arc-shaped rail is concentric with plug-in strip hinge, circular arc slide rail can move at arc-shaped rail interior orientation, accurate for plug-in strip switching can be put in place, and switching speed is fast, effectively can avoid the generation of electric arc, described arc-shaped rail side is provided with the through hole contacted with the teeth inside circular arc slide rail for gear, and Programmable Logic Controller is built-in with timer, disconnection motor power after plug-in strip conjunction is closed, one end sealing of described arc-shaped rail, the bottom of this arc-shaped rail arranges osculum, prevents water inlet in track, even if the water inlet of track one end, track lowest part is provided with osculum and can be conveniently discharged by water, arrange in described arc-shaped rail and prevent bite mechanism, this prevents from bite mechanism from comprising being symmetricly set on two lubrication holes of both sides, arc-shaped rail top, described lubrication hole place arranges the conduit be communicated with arc-shaped rail, described conduit is arranged the oil storage bottle be vertically connected with it, sponge with teeth joint is set in described lubrication hole, teeth touch sponge lubricating oil and enter in teeth and track, and the effect playing self-lubricating ensures equipment normal operation.
Embodiment 4: as Fig. 1, shown in 2, a kind of transformer superhigh pressure overvoltage insulation disconnecting link bar automatic switching device, the fuel level sensor 6 comprising transformer 1 and be arranged in transformer 1, described fuel level sensor 6 is connected with automatic oiling mechanism, described transformer 1 inwall arranges the temperature sensor 2 be connected with Programmable Logic Controller 5, described temperature sensor 2 is connected with and automatically winds up mechanism, the described mechanism that automatically winds up comprises the arc-shaped rail 7 concentric with plug-in strip hinge 14 be arranged on disconnecting link plate 10, in described track 7, circular arc slide rail 8 is set, one end of described circular arc slide rail 8 is connected with plug-in strip 15 insulating bar, the inner side of described circular arc slide rail 8 arranges uniform teeth 9, described disconnecting link plate 10 arranges drive motors 18 by support 16, the axle of described drive motors 18 is set with circular arc slide rail inside the gear 17 that matches of teeth, described arc-shaped rail 7 side is provided with the through hole 19 contacted with the teeth 9 inside circular arc slide rail 8 for gear 17.
One end sealing of described arc-shaped rail 7, the bottom of this arc-shaped rail 7 arranges osculum 20.
Arrange in described arc-shaped rail 7 and prevent bite mechanism, this prevents from bite mechanism from comprising being symmetricly set on two lubrication holes of both sides, arc-shaped rail 7 top, described lubrication hole place arranges the conduit 13 be communicated with arc-shaped rail, described conduit 13 is arranged the oil storage bottle 11 be vertically connected with it, the sponge 12 with teeth joint is set in described lubrication hole.
Described automatic oiling mechanism comprises the electromagnetically operated valve 4 being arranged on and transformation wall is communicated with it, this electromagnetically operated valve 4 is connected by holding wire with Programmable Logic Controller 5, described transformer 1 wall is provided with and is communicated with oil inlet pipe with it, and described oil inlet pipe is connected with oil pump 3, and the suction pipe of described oil pump 3 is communicated with oil storage pool.
Use said apparatus to carry out protecting the control method of transformer, comprise the following steps:
1) the oil level peak setting Programmable Logic Controller is a, and the oil level minimum of Programmable Logic Controller is b, and the temperature maximum simultaneously setting Programmable Logic Controller is 90 degree;
2) Programmable Logic Controller receives the information that fuel level sensor sends, if transformer oil level is lower than minimum, the while of Controlled by Programmable Controller operation of oil pump, Programmable Logic Controller opens the electromagnetically operated valve that transformer is closed, oil in oil storage pool is sent in transformer, when oil level in transformer is higher than set point a, Controlled by Programmable Controller oil pump and closed electromagnetic valve;
3) when the oil temperature in transformer more than 90 degree or/and when oil level in transformer is lower than b, Controlled by Programmable Controller drive motors works, and circular arc slide rail is rotated clockwise and is separated by disconnecting link instantaneously; Connect pressure-releasing electromagnetic valve while the work of Controlled by Programmable Controller drive motors, arc extinguishing gases is sprayed at disconnecting link contact position, prevents electric arc;
4) Programmable Logic Controller receives the information of temperature sensor and fuel level sensor transmission, if in transformer temperature lower than transformer oil level while 90 degree higher than minimum, Controlled by Programmable Controller drive motors works, and circular arc slide rail is rotated counterclockwise and is separated by disconnecting link instantaneously; Connect pressure-releasing electromagnetic valve while the work of Controlled by Programmable Controller drive motors, arc extinguishing gases is sprayed at disconnecting link contact position, prevents electric arc.
Compared with prior art, the invention has the beneficial effects as follows: in the transformer of the application, fuel level sensor is set, described fuel level sensor is connected with automatic oiling mechanism, described transformer inwall arranges the temperature sensor be connected with Programmable Logic Controller, described temperature sensor is connected with and automatically winds up mechanism, the described mechanism that automatically winds up comprises the arc-shaped rail concentric with plug-in strip hinge be arranged on disconnecting link plate, circular arc slide rail is set in described track, one end of described circular arc slide rail is connected with plug-in strip insulating bar, the inner side of described circular arc slide rail arranges uniform teeth, described disconnecting link plate arranges drive motors, the axle of described drive motors is set with circular arc slide rail inside the gear that matches of teeth, arc-shaped rail is concentric with plug-in strip hinge, circular arc slide rail can move at arc-shaped rail interior orientation, accurate for plug-in strip switching can be put in place, and switching speed is fast, effectively can avoid the generation of electric arc, described arc-shaped rail side is provided with the through hole contacted with the teeth inside circular arc slide rail for gear, and Programmable Logic Controller is built-in with timer, disconnection motor power after plug-in strip conjunction is closed, one end sealing of described arc-shaped rail, the bottom of this arc-shaped rail arranges osculum, prevents water inlet in track, even if the water inlet of track one end, track lowest part is provided with osculum and can be conveniently discharged by water, arrange in described arc-shaped rail and prevent bite mechanism, this prevents from bite mechanism from comprising being symmetricly set on two lubrication holes of both sides, arc-shaped rail top, described lubrication hole place arranges the conduit be communicated with arc-shaped rail, described conduit is arranged the oil storage bottle be vertically connected with it, sponge with teeth joint is set in described lubrication hole, teeth touch sponge lubricating oil and enter in teeth and track, and the effect playing self-lubricating ensures equipment normal operation, described automatic oiling mechanism comprises the electromagnetically operated valve being arranged on and transformation wall is communicated with it, this electromagnetically operated valve is connected by holding wire with Programmable Logic Controller, described transformation wall is provided with and is communicated with oil inlet pipe with it, described oil inlet pipe is connected with oil pump, the suction pipe of described oil pump is communicated with oil storage pool, prevent transformer oil starvation overload operation, damage transformer.
Embodiment 5: as Fig. 1, shown in 2, a kind of transformer superhigh pressure overvoltage insulation disconnecting link bar automatic switching device, the fuel level sensor 6 comprising transformer 1 and be arranged in transformer 1, described fuel level sensor 6 is connected with automatic oiling mechanism, described transformer 1 inwall arranges the temperature sensor 2 be connected with Programmable Logic Controller 5, described temperature sensor 2 is connected with and automatically winds up mechanism, the described mechanism that automatically winds up comprises the arc-shaped rail 7 concentric with plug-in strip hinge 14 be arranged on disconnecting link plate 10, in described track 7, circular arc slide rail 8 is set, one end of described circular arc slide rail 8 is connected with plug-in strip 15 insulating bar, the inner side of described circular arc slide rail 8 arranges uniform teeth 9, described disconnecting link plate 10 arranges drive motors 18 by support 16, the axle of described drive motors 18 is set with circular arc slide rail inside the gear 17 that matches of teeth, described arc-shaped rail 7 side is provided with the through hole 19 contacted with the teeth 9 inside circular arc slide rail 8 for gear 17.
One end sealing of described arc-shaped rail 7, the bottom of this arc-shaped rail 7 arranges osculum 20.
Arrange in described arc-shaped rail 7 and prevent bite mechanism, this prevents from bite mechanism from comprising being symmetricly set on two lubrication holes of both sides, arc-shaped rail 7 top, described lubrication hole place arranges the conduit 13 be communicated with arc-shaped rail, described conduit 13 is arranged the oil storage bottle 11 be vertically connected with it, the sponge 12 with teeth joint is set in described lubrication hole.
Described automatic oiling mechanism comprises the electromagnetically operated valve 4 being arranged on and transformation wall is communicated with it, this electromagnetically operated valve 4 is connected by holding wire with Programmable Logic Controller 5, described transformer 1 wall is provided with and is communicated with oil inlet pipe with it, and described oil inlet pipe is connected with oil pump 3, and the suction pipe of described oil pump 3 is communicated with oil storage pool.
Described disconnecting link plate top arranges arc-extinguishing mechanism, and described arc-extinguishing mechanism comprises air accumulator and is arranged on disconnecting link plate top and is positioned at the shower nozzle that disconnecting link closes place, and described shower nozzle passes through tubes connection with air accumulator, and described conduit arranges pressure-releasing electromagnetic valve.
Use said apparatus to carry out protecting the control method of transformer, comprise the following steps:
1) the oil level peak setting Programmable Logic Controller is a, and the oil level minimum of Programmable Logic Controller is b, and the temperature maximum simultaneously setting Programmable Logic Controller is 90 degree;
2) Programmable Logic Controller receives the information that fuel level sensor sends, if transformer oil level is lower than minimum, the while of Controlled by Programmable Controller operation of oil pump, Programmable Logic Controller opens the electromagnetically operated valve that transformer is closed, oil in oil storage pool is sent in transformer, when oil level in transformer is higher than set point a, Controlled by Programmable Controller oil pump and closed electromagnetic valve;
3) when the oil temperature in transformer more than 90 degree or/and when oil level in transformer is lower than b, Controlled by Programmable Controller drive motors works, and circular arc slide rail is rotated clockwise and is separated by disconnecting link instantaneously; Connect pressure-releasing electromagnetic valve while the work of Controlled by Programmable Controller drive motors, arc extinguishing gases is sprayed at disconnecting link contact position, prevents electric arc;
4) Programmable Logic Controller receives the information of temperature sensor and fuel level sensor transmission, if in transformer temperature lower than transformer oil level while 90 degree higher than minimum, Controlled by Programmable Controller drive motors works, and circular arc slide rail is rotated counterclockwise and is separated by disconnecting link instantaneously; Connect pressure-releasing electromagnetic valve while the work of Controlled by Programmable Controller drive motors, arc extinguishing gases is sprayed at disconnecting link contact position, prevents electric arc.
Compared with prior art, the invention has the beneficial effects as follows: in the transformer of the application, fuel level sensor is set, described fuel level sensor is connected with automatic oiling mechanism, described transformer inwall arranges the temperature sensor be connected with Programmable Logic Controller, described temperature sensor is connected with and automatically winds up mechanism, the described mechanism that automatically winds up comprises the arc-shaped rail concentric with plug-in strip hinge be arranged on disconnecting link plate, circular arc slide rail is set in described track, one end of described circular arc slide rail is connected with plug-in strip insulating bar, the inner side of described circular arc slide rail arranges uniform teeth, described disconnecting link plate arranges drive motors, the axle of described drive motors is set with circular arc slide rail inside the gear that matches of teeth, arc-shaped rail is concentric with plug-in strip hinge, circular arc slide rail can move at arc-shaped rail interior orientation, accurate for plug-in strip switching can be put in place, and switching speed is fast, effectively can avoid the generation of electric arc, described arc-shaped rail side is provided with the through hole contacted with the teeth inside circular arc slide rail for gear, and Programmable Logic Controller is built-in with timer, disconnection motor power after plug-in strip conjunction is closed, one end sealing of described arc-shaped rail, the bottom of this arc-shaped rail arranges osculum, prevents water inlet in track, even if the water inlet of track one end, track lowest part is provided with osculum and can be conveniently discharged by water, arrange in described arc-shaped rail and prevent bite mechanism, this prevents from bite mechanism from comprising being symmetricly set on two lubrication holes of both sides, arc-shaped rail top, described lubrication hole place arranges the conduit be communicated with arc-shaped rail, described conduit is arranged the oil storage bottle be vertically connected with it, sponge with teeth joint is set in described lubrication hole, teeth touch sponge lubricating oil and enter in teeth and track, and the effect playing self-lubricating ensures equipment normal operation, described automatic oiling mechanism comprises the electromagnetically operated valve being arranged on and transformation wall is communicated with it, this electromagnetically operated valve is connected by holding wire with Programmable Logic Controller, described transformation wall is provided with and is communicated with oil inlet pipe with it, described oil inlet pipe is connected with oil pump, the suction pipe of described oil pump is communicated with oil storage pool, prevent transformer oil starvation overload operation, damage transformer, described disconnecting link plate top arranges arc-extinguishing mechanism, described arc-extinguishing mechanism comprises air accumulator and is arranged on disconnecting link plate top and is positioned at the shower nozzle that disconnecting link closes place, and described shower nozzle passes through tubes connection with air accumulator, and described conduit arranges pressure-releasing electromagnetic valve, play the effect of arc extinguishing, prevent from causing fire.Inventor installs device of the present invention and adopts control method of the present invention on 100 transformers, through the test of 2 years, there is not primary fault in device of the present invention, not having a transformer to burn 2 years more, for Utilities Electric Co. saves immeasurable fund, importantly device of the present invention automatically can disconnect plug-in strip after transformer breaks down, transformer equipment can not be burnt, what is more important reaches set point and temperature lower than set point at transformer oil level, disconnecting link meeting automatic closing, manual operation is carried out without the need to electric power personnel, greatly reduce interruption duration, decrease the loss of producing to enterprise and the people, and in the face of same test job, traditional transformer 100 multiple stage summer, the Spring Festival and other high load capacities time burn about 20, transformer every year, and this situation is more and more outstanding, brings about great losses to power department.
Claims (6)
1. a transformer superhigh pressure overvoltage insulation disconnecting link bar automatic switching device, it is characterized in that: comprise transformer and be arranged on the fuel level sensor in transformer, described fuel level sensor is connected with automatic oiling mechanism, described transformer inwall arranges the temperature sensor be connected with Programmable Logic Controller, described temperature sensor is connected with and automatically winds up mechanism, the described mechanism that automatically winds up comprises the arc-shaped rail concentric with plug-in strip hinge be arranged on disconnecting link plate, circular arc slide rail is set in described track, one end of described circular arc slide rail is connected with plug-in strip insulating bar, the inner side of described circular arc slide rail arranges uniform teeth, described disconnecting link plate arranges drive motors, the axle of described drive motors is set with circular arc slide rail inside the gear that matches of teeth, described arc-shaped rail side is provided with the through hole contacted with the teeth inside circular arc slide rail for gear.
2. transformer superhigh pressure overvoltage insulation disconnecting link bar automatic switching device as claimed in claim 1, is characterized in that:
One end sealing of described arc-shaped rail, the bottom of this arc-shaped rail arranges osculum.
3. transformer superhigh pressure overvoltage insulation disconnecting link bar automatic switching device as claimed in claim 2, is characterized in that:
Arrange in described arc-shaped rail and prevent bite mechanism, this prevents from bite mechanism from comprising being symmetricly set on two lubrication holes of both sides, arc-shaped rail top, described lubrication hole place arranges the conduit be communicated with arc-shaped rail, described conduit is arranged the oil storage bottle be vertically connected with it, the sponge with teeth joint is set in described lubrication hole.
4. transformer superhigh pressure overvoltage insulation disconnecting link bar automatic switching device as claimed in claim 1, is characterized in that:
Described automatic oiling mechanism comprises the electromagnetically operated valve being arranged on and transformation wall is communicated with it, this electromagnetically operated valve is connected by holding wire with Programmable Logic Controller, described transformation wall is provided with and is communicated with oil inlet pipe with it, and described oil inlet pipe is connected with oil pump, and the suction pipe of described oil pump is communicated with oil storage pool.
5. transformer superhigh pressure overvoltage insulation disconnecting link bar automatic switching device as claimed in claim 1, is characterized in that:
Described disconnecting link plate top arranges arc-extinguishing mechanism, and described arc-extinguishing mechanism comprises air accumulator and is arranged on disconnecting link plate top and is positioned at the shower nozzle that disconnecting link closes place, and described shower nozzle passes through tubes connection with air accumulator, and described conduit arranges pressure-releasing electromagnetic valve.
6. use transformer superhigh pressure overvoltage as claimed in claim 1 insulation disconnecting link bar automatic switching device to carry out protecting the control method of transformer, it is characterized in that: comprise the following steps:
1) the oil level peak setting Programmable Logic Controller is a, and the oil level minimum of Programmable Logic Controller is b, and the temperature maximum simultaneously setting Programmable Logic Controller is 90 degree;
2) Programmable Logic Controller receives the information that fuel level sensor sends, if transformer oil level is lower than minimum, the while of Controlled by Programmable Controller operation of oil pump, Programmable Logic Controller opens the electromagnetically operated valve that transformer is closed, oil in oil storage pool is sent in transformer, when oil level in transformer is higher than set point a, Controlled by Programmable Controller oil pump and closed electromagnetic valve;
3) when the oil temperature in transformer more than 90 degree or/and when oil level in transformer is lower than b, Controlled by Programmable Controller drive motors works, and circular arc slide rail is rotated clockwise and is separated by disconnecting link instantaneously; Connect pressure-releasing electromagnetic valve while the work of Controlled by Programmable Controller drive motors, arc extinguishing gases is sprayed at disconnecting link contact position, prevents electric arc;
4) Programmable Logic Controller receives the information of temperature sensor and fuel level sensor transmission, if in transformer temperature lower than transformer oil level while 90 degree higher than minimum, Controlled by Programmable Controller drive motors works, and circular arc slide rail is rotated counterclockwise and is separated by disconnecting link instantaneously; Connect pressure-releasing electromagnetic valve while the work of Controlled by Programmable Controller drive motors, arc extinguishing gases is sprayed at disconnecting link contact position, prevents electric arc.
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| CN201410553012.7A CN104269825B (en) | 2014-10-17 | 2014-10-17 | Transformer ultra-high voltage overvoltage insulation disconnecting link rod automatic switching device and control method |
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| CN201410553012.7A CN104269825B (en) | 2014-10-17 | 2014-10-17 | Transformer ultra-high voltage overvoltage insulation disconnecting link rod automatic switching device and control method |
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| CN104269825B CN104269825B (en) | 2017-02-15 |
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Cited By (1)
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| CN113675029A (en) * | 2021-08-27 | 2021-11-19 | 广东电网有限责任公司 | Disconnecting link operating device |
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| CN104269825B (en) | 2017-02-15 |
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