CN110767411A - Transformer cooling device and operation monitoring system - Google Patents
Transformer cooling device and operation monitoring system Download PDFInfo
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- CN110767411A CN110767411A CN201911055712.2A CN201911055712A CN110767411A CN 110767411 A CN110767411 A CN 110767411A CN 201911055712 A CN201911055712 A CN 201911055712A CN 110767411 A CN110767411 A CN 110767411A
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- 238000001816 cooling Methods 0.000 title claims abstract description 144
- 238000012544 monitoring process Methods 0.000 title claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 230000008054 signal transmission Effects 0.000 claims abstract description 18
- 239000000498 cooling water Substances 0.000 claims description 57
- 230000017525 heat dissipation Effects 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 15
- 238000009826 distribution Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 4
- 239000004519 grease Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 81
- 230000008569 process Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000010724 circulating oil Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/025—Constructional details relating to cooling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/16—Water cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/404—Protective devices specially adapted for fluid filled transformers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/406—Temperature sensor or protection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
Abstract
The embodiment of the invention discloses a transformer cooling device, which comprises a transformer shell, wherein a plurality of radiating finned tubes for radiating transformer cooling oil are arranged on the transformer shell, the radiating finned tubes are connected with an oil pump through pipelines, connecting grooves are formed in two sides of each radiating finned tube, and the transformer cooling device operation monitoring system comprises a transformer cooling device, an external circulating water-cooling monitoring module for monitoring the operation of a water pump in the transformer cooling device, an internal circulating oil-cooling monitoring module for monitoring the operation of the oil pump in the transformer cooling device, a cloud server, a controller and a wireless signal transmission module, and is more convenient to use.
Description
Technical Field
The embodiment of the invention relates to the technical field of transformers, in particular to a transformer cooling device and an operation monitoring system.
Background
The transformer is a device for changing alternating voltage by using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil and an iron core. The main functions are as follows: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization, and the like.
In the operation process of the current transformer, because of the existence of copper loss and iron loss, heat is inevitably generated, the temperature rise of the transformer directly influences the insulation service life of the transformer, so the transformer needs to be cooled, in areas with high temperature and high load, the oil pump is automatically started when the temperature of the oil or the temperature of a winding reaches a set value in a common oil circulation and air cooling combined mode of transformer cooling, but in the actual use process, the cooling effect of the transformer is limited only by the oil circulation and air cooling combined mode for overload or poor ventilation of the transformer, the overload operation of the oil pump and a fan is easily caused, and the transformer is damaged due to untimely heat dissipation.
At present, in order to avoid the problem that an oil pump works abnormally and a transformer breaks down due to overheating, staff need to patrol at fixed time and fixed point, but when patrolling a plurality of transformers, the interval time of patrol is long, and when the transformer breaks down, timely processing cannot be performed easily, so that the running condition of the transformer is easily deteriorated.
Disclosure of Invention
Therefore, the embodiment of the invention provides a transformer cooling device and an operation monitoring system, which aim to solve the problems that the transformer with overload or poor ventilation cannot be well cooled in the oil circulation and air cooling structure mode in the prior art, and the working personnel cannot timely process the transformer easily due to the overlong inspection interval of the working personnel.
In order to achieve the above object, an embodiment of the present invention provides the following:
a transformer cooling device comprises a transformer shell, wherein a plurality of radiating finned tubes used for radiating transformer cooling oil are arranged on the transformer shell and connected with an oil pump through pipelines, connecting grooves are formed in two sides of each radiating finned tube, the radiating finned tubes are connected with an external circulation cooling assembly used for radiating the radiating finned tubes through the connecting grooves, and the external circulation cooling assembly is connected with the water pump through the pipelines;
the outer circulation cooling assembly comprises two cooling water pipes which are matched with the connecting grooves and are connected with each other through pipelines and a fixing clamping plate which rotates on two sides of one of the cooling water pipes, one end, far away from the cooling water pipe, of the fixing clamping plate is fixedly arranged on the transformer shell, a plurality of positioning holes are formed in the fixing clamping plate at equal intervals, and a positioning block corresponding to the positioning holes is arranged on the other fixing clamping plate.
As a preferable scheme of the invention, the fixed clamping plate is rotatably connected to the cooling water pipe far away from the transformer shell.
In a preferred embodiment of the present invention, two adjacent external circulation cooling assemblies are connected by a pipe.
As a preferable aspect of the present invention, the cooling water pipe is made of a heat conductive metal material, and includes a copper alloy.
In a preferred embodiment of the present invention, the contact portion between the cooling water pipe and the fin heat dissipation pipe is coated with a heat conductive silicone grease.
A transformer cooling operation monitoring system comprises a transformer cooling device, an external circulation water-cooling monitoring module for monitoring the operation of a water pump in the transformer cooling device, an internal circulation oil-cooling monitoring module for monitoring the operation of an oil pump in the transformer cooling device, a cloud server, a controller and a wireless signal transmission module, wherein the controller is respectively electrically connected with the wireless signal transmission module, the external circulation water-cooling monitoring module and the internal circulation oil-cooling monitoring module, and is connected with the cloud server through the wireless signal transmission module;
the internal circulation oil cooling monitoring module comprises a first temperature sensor, a second temperature sensor, a first flowmeter and a speed sensor, wherein the speed sensor is used for detecting the operation speed of an oil pump in the transformer cooling device;
the outer circulation water-cooling detection module comprises a third temperature sensor, a fourth temperature sensor and a second flowmeter, wherein the third temperature sensor is provided with a plurality of cooling water pipes which are correspondingly arranged in the transformer cooling device, and corresponds to the second temperature sensor, the fourth temperature sensor is arranged at a water inlet of a water pump in the transformer cooling device, and the second flowmeter is arranged at a water outlet of the water pump in the transformer cooling device.
As a preferred scheme of the present invention, the transformer is provided with a temperature warning value, and the temperature warning value is divided into three stages which are gradually increased, and the three stages respectively correspond to the step of not starting the water pump and the oil pump, the step of starting the oil pump without starting the water pump, and the step of starting the water pump and the oil pump.
As a preferable aspect of the present invention, the preparation work before controlling the oil pump and the water pump to work includes:
measuring a plurality of groups of first flowmeter data, oil temperature data, cooling water temperature data, second flowmeter data, oil temperature distribution data information and cooling water temperature distribution information, uploading the measured data to a cloud server, and calculating by the cloud server to obtain cooling data information of the relationship among the first flowmeter data, the oil temperature data, the cooling water temperature data and the second flowmeter data;
the power consumption of the oil pump and the water pump of the first flowmeter and the second flowmeter under different values is measured, the measured data are uploaded to the cloud server, and the cloud server calculates the power consumption data information between the value of the first flowmeter and the power consumption of the oil pump and between the value of the second flowmeter and the power consumption of the water pump.
As a preferred scheme of the present invention, the process of cooling the transformer comprises:
the temperature data information of the transformer cooling oil is detected through the first temperature sensor, the stage of the temperature is judged by the controller according to the detected cooling oil temperature data information, the corresponding data are detected by starting the sensors related to the stage according to the stage, the detected data information is uploaded to the cloud server, the server substitutes the data into the cooling data information and the power consumption data information, the optimal operation data of the water pump and the oil pump are obtained through calculation, the data are returned to the controller, the controller controls the work of the water pump and the oil pump according to the returned data, the related data information is transmitted to a user side through the wireless signal transmission module, and the cooling of the transformer is completed.
As a preferred scheme of the invention, the detection of the blockage degree of the radiating finned tube comprises the following steps:
measuring the operating speeds of a plurality of groups of oil pumps at different transformer oil temperatures and under the condition that the radiating finned tubes are not blocked and numerical data of the first flow meter, uploading the measured data to a cloud server, and calculating by the cloud server to obtain standard data of the numerical data relationship between the operating speed of the oil pump and the first flow meter under the normal operating condition of the oil pump;
and measuring the oil temperature data of the transformer, the running speed of the oil pump and the numerical data of the first flowmeter during actual running, uploading the measured data to a cloud server, substituting the measured data into standard data by the cloud server for comparison and calculation, and finishing judging the blockage degree of the radiating finned tube and the running state of the oil pump.
The embodiment of the invention has the following advantages:
(1) when the transformer is used, the arranged external circulation cooling assembly is attached to the arranged heat dissipation finned tube, the transformer can be efficiently dissipated by further matching with the oil pump and the air cooling, and the problem that the transformer is easy to break down due to overheating caused by large heat productivity of the transformer during overload work can be effectively solved.
(2) When the monitoring device is used, the oil pump cooling and the water pump cooling can be respectively monitored by the internal circulating oil cooling monitoring module and the external circulating water cooling monitoring module, so that when the oil pump or the water pump has a problem, the transformer with the problem and related data information can be transmitted to a user side through the wireless signal transmission module, and the problem that the transformer cooling cannot be processed in time due to long inspection interval of workers can be effectively avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
The structure, proportion, size and the like shown in the drawings are only used for matching with the content disclosed in the specification, so that the person skilled in the art can understand and read the description, and the description is not used for limiting the limit condition of the implementation of the invention, so the method has no technical essence, and any structural modification, proportion relation change or size adjustment still falls within the scope of the technical content disclosed by the invention without affecting the effect and the achievable purpose of the invention.
Fig. 1 is a schematic diagram illustrating an overall structure of a transformer cooling apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic view of an installation structure of a cooling water pipe according to an embodiment of the present invention;
FIG. 3 is a sectional view of the cooling water pipe and the finned heat dissipating pipe according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a transformer operation monitoring system according to an embodiment of the present invention.
In the figure:
1-a transformer housing; 2-radiating finned tubes; 3-connecting the groove; 4-external circulation cooling assembly; 5-an oil pump; 6, a water pump;
401-cooling water pipes; 402-fixed clamping plate; 403-positioning holes; 404-locating block.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. It should be noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.
As shown in fig. 1 to 4, the present invention provides a transformer cooling device, which comprises a transformer housing 1, wherein a plurality of heat dissipation finned tubes 2 for dissipating heat of transformer cooling oil are arranged on the transformer housing 1, the heat dissipation finned tubes 2 are connected with an oil pump 5 through a pipeline, the heat dissipation finned tubes 2 are preferably made of copper alloy, in the actual production process, heat dissipation fins can be additionally arranged on two sides of the heat dissipation finned tubes 2 to improve the cooling effect of the transformer cooling oil through the heat dissipation finned tubes under the condition of natural wind cooling, connecting grooves 3 are respectively arranged on two sides of the heat dissipation finned tubes 2, the heat dissipation finned tubes 2 are connected with an external circulation cooling assembly 4 for dissipating heat of the heat dissipation finned tubes 2 through the connecting grooves 3, the external circulation cooling assembly 4 is connected with a water pump 6 through a pipeline, and the circulation of the cooling oil inside the heat dissipation finned tubes 2 flows from top to bottom, so that take out the high temperature cooling oil that is in the transformer upper strata and dispel the heat in heat dissipation finned tube 2, then the transformer is arranged into from the bottom to the cooling oil after will cooling, can effectual improvement carry out radiating effect to the transformer through oil pump 5.
The external circulation cooling assembly 4 comprises two cooling water pipes 401 which are matched with the connecting grooves 3 and are connected with each other through a pipeline and a fixing clamping plate 402 which rotates at two sides of one of the cooling water pipes 401,
the cooling water pipe 401 is made of a heat-conducting metal material and comprises a copper alloy, when the cooling water pipe 401 is started to radiate heat, the heat of the cooling oil in the heat-radiating finned pipe 2 can be rapidly conducted to the cooling water in the cooling water pipe 401, the purpose of radiating the transformer is further completed in a heat exchange mode, the connecting groove 3 arranged on the heat-radiating finned pipe can increase the contact area between the heat-radiating finned pipe 2 and the cooling water pipe 401, and the heat exchange capacity can be further improved,
in addition, in the production process, the cooling water pipe 401 can be additionally provided with radiating fins, so that the radiating effect of the cooling water in the cooling water pipe 401 is enhanced, and meanwhile, the structural strength of the cooling water pipe 401 can be effectively enhanced.
As shown in fig. 3, one end of the fixing clip board 402 far from the cooling water pipe 401 is fixedly installed on the transformer housing 1, a plurality of positioning holes 403 are further formed on the fixing clip board 402 at equal intervals, a positioning block 404 corresponding to the positioning hole 403 is arranged on another fixing clip board 402, the fixing clip board 402 is rotatably connected to the cooling water pipe 401 far from the transformer housing 1, when the installation is performed, two opposite cooling water pipes 401 can be pre-fixed on the heat dissipation finned pipe through the connecting groove 3, then the fixing clip board 402 is rotatably arranged, the positioning holes 403 on the fixing clip board 402 can be embedded with the positioning blocks 404 on another cooling water pipe 401, so as to realize the mutual connection between the two cooling water pipes 401, finally the fixing clip board 402 can be fixed on the transformer housing 1 through screws, then the two cooling water pipes 401 are connected through pipelines, so as to complete the installation of the external circulation cooling assembly 4, the cooling water adopts the better deionized pure water of insulating nature to guarantee that it can not influence the normal operating of transformer when revealing, and because this extrinsic cycle cooling module 4 installs in the outside of transformer, not only can greatly reduced cooling water reveal the influence that causes the transformer, but also when breaking down, be convenient for be used for getting off the whole dismantlement of condenser tube 401 and detect, its use can be more convenient.
In addition, through the pipe connection between two adjacent outer circulative cooling subassemblies 4, a plurality of outer circulative cooling subassemblies 4 link together the back, accessible pipe connection water pump 6 with hold the cooler bin of cooling water, form the circulation of a completion promptly, guarantee that the cooling water can distribute the heat to the external world after the heat exchange through with the cooling oil, can effectual improvement this transformer's radiating effect.
The contact part of the cooling water pipe 401 and the radiating fin tube 2 is coated with heat-conducting silicone grease, the heat-conducting silicone grease can fill the gap between the cooling water pipe 401 and the radiating fin tube 2 when the cooling water pipe and the radiating fin tube 2 are connected, so that the heat of the cooling oil in the radiating fin tube 2 can be more rapidly conducted to the cooling water in the cooling water pipe 401, and the heat exchange efficiency is higher.
It is supplementary to need, after condenser tube 401 installs on heat dissipation finned tube 2, it did not wrap heat dissipation finned tube 2, consequently when stopping use outer circulative cooling subassembly 4, still accessible heat dissipation finned tube 2 dispels the heat to the external world, can avoid no matter the transformer all need open water pump 6 and dispel the heat when low power during operation or overload during operation problem, can effectually reduce the transformer during operation, the electric energy that its cooling device needs to consume, more energy-conservation.
As shown in fig. 1 to 4, a transformer cooling operation monitoring system comprises a transformer cooling device, an external circulation water cooling monitoring module for monitoring the operation of a water pump 6 in the transformer cooling device, an internal circulation oil cooling monitoring module for monitoring the operation of an oil pump 5 in the transformer cooling device, a cloud server, a controller and a wireless signal transmission module, wherein the controller is electrically connected with the wireless signal transmission module, the external circulation water cooling monitoring module and the internal circulation oil cooling monitoring module respectively, and the controller is connected with the cloud server through the wireless signal transmission module.
Wherein, the cold monitoring module of inner loop oil that sets up, cloud ware, controller and radio signal transmission module all preferably adopt dual power supply, and one supplies power through 220V's alternating current promptly, and another then supplies power through the battery, and the battery is preferably the solar panel power supply, in the use of reality, can avoid causing because of having a power failure and can't carry out the problem monitored to transformer running state.
The controller is preferably a single chip microcomputer, preferably STM32MP1 general microprocessor product series, and the wireless signal transmission module is an assembly of a wireless signal receiver and a wireless signal generator, so that a worker can conveniently view and control the transformer cooling device through a user.
The internal circulation oil cooling monitoring module comprises a first temperature sensor, a second temperature sensor, a first flowmeter and a speed sensor, wherein the speed sensor is used for detecting the running speed of an oil pump 5 in the transformer cooling device, the first temperature sensor is arranged in the transformer and used for detecting the oil temperature in the transformer, the second temperature sensor is provided with a plurality of radiating finned tubes 2 which are fixedly arranged in the transformer cooling device in an irregular mode, and the first flowmeter is arranged at an oil outlet of the oil pump 5 in the transformer cooling device.
The outer circulation water cooling detection module comprises a third temperature sensor, a fourth temperature sensor and a second flowmeter, the third temperature sensor is provided with a plurality of cooling water pipes 401 which are arranged in the transformer cooling device correspondingly to the second temperature sensor, the fourth temperature sensor is arranged at a water inlet of the water pump 6 in the transformer cooling device, and the second flowmeter is arranged at a water outlet of the water pump 6 in the transformer cooling device.
The transformer is provided with a temperature warning value which is divided into three stages increasing step by step, the three stages respectively correspond to the steps of not starting the water pump 6 and the oil pump 5, starting the oil pump 5 without starting the water pump 6 and the oil pump 5, the set three stages are provided with buffer sections at the joint parts, i.e., the temperature warning value data in the first stage or the second stage, if the breakthrough is to proceed to the next stage, the temperature warning value data is required to be higher than the highest threshold value data of the buffer interval, on the contrary, if the temperature warning data in the second or third stage is going to enter the previous stage, the temperature warning data is required to be lower than the minimum threshold value of the buffer interval, in the process, the problem that the oil pump and the water pump are frequently started or closed due to the fact that the temperature warning value is between two stages and is suddenly high or low can be avoided, and the practicability is stronger.
In addition, the water cooling part of the cooling device is preferably of a multi-channel structure, the circulation of cooling water can be improved, the third temperature sensor is arranged, in order to monitor the whole process of the cooling water from the heat exchange starting stage to the heat exchange finishing stage, the abnormity of the cooling device in the operation process can be judged according to the detection result, the relation between the cooling water flow and the cooling speed of the cooling water can be calculated more conveniently, in the actual use process, various data of the cooling device in the operation process can be recorded by the cloud server, an operation database is established, the historical operation state of the cooling device can be conveniently checked by a worker, the worker can conveniently judge the problem position through the operation data when the problem occurs, and the actual use process is more convenient.
The preparation work before the oil pump 5 and the water pump 6 are controlled to work is as follows:
measuring a plurality of groups of first flowmeter data, oil temperature data, cooling water temperature data, second flowmeter data, oil temperature distribution data information and cooling water temperature distribution information, uploading the measured data to a cloud server, and calculating by the cloud server to obtain cooling data information of the relationship among the first flowmeter data, the oil temperature data, the cooling water temperature data and the second flowmeter data;
the power consumption of the oil pump 5 and the water pump 6 of the first flowmeter and the power consumption of the second flowmeter under different values are measured, the measured data are uploaded to the cloud server, and the cloud server calculates the power consumption data information between the first flowmeter value and the power consumption of the oil pump 5 and between the second flowmeter value and the power consumption of the water pump 6.
The calculated cooling data information and the calculated power consumption data information can be stored in the controller as basic information, so that when the wireless signal transmission module has a problem, the transformer cooling device can be controlled by the controller according to the cooling data information and the power consumption data information.
The process of cooling the transformer comprises the following steps:
the temperature data information of the transformer cooling oil is detected through the first temperature sensor, the stage of the temperature is judged by the controller according to the detected cooling oil temperature data information, the corresponding data are detected by starting the sensors related to the stage according to the stage, the detected data information is uploaded to the cloud server, the server substitutes the data into the cooling data information and the power consumption data information, the optimal operation data of the water pump 6 and the oil pump 5 are obtained through calculation, the data are returned to the controller, the controller controls the water pump 6 and the oil pump 5 to work according to the returned data, the related data information is transmitted to a user side through the wireless signal transmission module, and the cooling of the transformer is completed.
It is necessary to supplement that, when the transformer cooling device fails and the operation state is adjusted, the controller transmits the related data to the user terminal through the wireless signal transmission module, so that the worker can timely handle the abnormal operation state of the transformer.
The method for detecting the blocking degree of the radiating finned tube 2 comprises the following steps:
measuring a plurality of groups of numerical data of the operating speed of the oil pump 5 and the first flowmeter under the condition of different transformer oil temperatures and no blockage of the radiating finned tube 2, uploading the measured data to a cloud server, and calculating standard data of the numerical data relation between the operating speed of the oil pump 5 and the first flowmeter under the normal operation condition of the oil pump 5 by the cloud server;
and measuring the oil temperature data of the transformer, the running speed of the oil pump 5 and the numerical data of the first flowmeter during actual running, uploading the measured data to a cloud server, substituting the measured data into standard data by the cloud server for comparison and calculation, and finishing judging the blockage degree of the radiating finned tube 2 and the running state of the oil pump.
It should be noted that the measured operation speed of the oil pump 5 refers to the operation speed of the oil pump 5 under the normal operation of the oil pump 5 under the rated power and the blockage condition of the heat dissipation finned tube 2, so as to facilitate the subsequent judgment of the blockage degree of the heat dissipation finned tube 2.
When the transformer cooling device is used, due to the fact that copper loss and iron loss exist in the transformer, certain foreign matters can be inevitably generated in the transformer, the foreign matters are mixed in cooling oil and can move in the heat dissipation finned tubes 2 along with the oil pump 5, and therefore the problem that the heat dissipation finned tubes 2 are blocked by the foreign matters can exist.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A transformer cooling device comprises a transformer shell (1), and is characterized in that a plurality of radiating finned tubes (2) used for radiating transformer cooling oil are arranged on the transformer shell (1), the radiating finned tubes (2) are connected with an oil pump (5) through pipelines, connecting grooves (3) are formed in two sides of each radiating finned tube (2), the radiating finned tubes (2) are connected with outer circulation cooling assemblies (4) used for radiating the radiating finned tubes (2) through the connecting grooves (3), and the outer circulation cooling assemblies (4) are connected with a water pump (6) through the pipelines;
the outer circulation cooling assembly (4) comprises two cooling water pipes (401) which are matched with the connecting grooves (3) and are connected with each other through pipelines and a fixing clamping plate (402) which rotates on two sides of one of the cooling water pipes (401), one end, far away from the cooling water pipes (401), of the fixing clamping plate (402) is fixedly installed on the transformer shell (1), a plurality of positioning holes (403) are formed in the fixing clamping plate (402) at equal intervals, and a positioning block (404) corresponding to the positioning holes (403) is arranged on the other fixing clamping plate (402).
2. A transformer cooling arrangement according to claim 1, characterised in that the fixing clip (402) is rotatably attached to the cooling water pipe (401) remote from the transformer housing (1).
3. A transformer cooling arrangement according to claim 1, characterized in that adjacent two of said outer circulating cooling modules (4) are connected by a pipe.
4. A transformer cooling arrangement according to claim 1, characterised in that said cooling water tubes (401) are made of a heat conducting metal material, said heat conducting metal material comprising a copper alloy.
5. The transformer cooling device according to claim 1, wherein the contact part of the cooling water pipe (401) and the radiating finned pipe (2) is coated with heat-conducting silicone grease.
6. An operation monitoring system applied to the transformer cooling device as claimed in claims 1-5, characterized by comprising the transformer cooling device, an external circulation water cooling monitoring module for monitoring the operation of a water pump (6) in the transformer cooling device, an internal circulation oil cooling monitoring module for monitoring the operation of an oil pump (5) in the transformer cooling device, a cloud server, a controller and a wireless signal transmission module, wherein the controller is respectively electrically connected with the wireless signal transmission module, the external circulation water cooling monitoring module and the internal circulation oil cooling monitoring module, and is connected with the cloud server through the wireless signal transmission module;
the internal circulation oil cooling monitoring module comprises a first temperature sensor, a second temperature sensor, a first flowmeter and a speed sensor, wherein the speed sensor is used for detecting the running speed of an oil pump (5) in the transformer cooling device, the first temperature sensor is arranged in the transformer and is used for detecting the oil temperature in the transformer, the second temperature sensor is provided with a plurality of radiating finned tubes (2) which are irregularly and fixedly arranged in the transformer cooling device, and the first flowmeter is arranged at an oil discharge port of the oil pump (5) in the transformer cooling device;
outer circulation water-cooling detection module includes third temperature sensor, fourth temperature sensor and second flowmeter, third temperature sensor is provided with a plurality of and corresponds cooling water pipe (401) that set up in transformer cooling device with second temperature sensor on, fourth temperature sensor sets up water pump (6) water inlet department in transformer cooling device, just the second flowmeter sets up water pump (6) water outlet department in transformer cooling device.
7. The transformer cooling operation monitoring system according to claim 6, wherein the transformer is provided with a temperature warning value, the temperature warning value is divided into three stages which are gradually increased, and the three stages respectively correspond to the steps of not starting the water pump (6) and the oil pump (5), starting the oil pump (5) without starting the water pump (6) and the oil pump (5).
8. The transformer cooling operation monitoring system according to claim 6, wherein the preparation work before controlling the oil pump (5) and the water pump (6) to work is as follows:
measuring a plurality of groups of first flowmeter data, oil temperature data, cooling water temperature data, second flowmeter data, oil temperature distribution data information and cooling water temperature distribution information, uploading the measured data to a cloud server, and calculating by the cloud server to obtain cooling data information of the relationship among the first flowmeter data, the oil temperature data, the cooling water temperature data and the second flowmeter data;
the power consumption of the oil pump (5) and the water pump (6) of the first flowmeter and the second flowmeter under different values is measured, the measured data are uploaded to the cloud server, and the cloud server calculates the power consumption data information between the first flowmeter value and the power consumption of the oil pump (5) and between the second flowmeter value and the power consumption of the water pump (6).
9. The transformer cooling operation monitoring system according to claim 8, wherein the procedure of cooling down the transformer is as follows:
the temperature data information of the transformer cooling oil is detected through the first temperature sensor, the stage of the temperature is judged by the controller according to the detected cooling oil temperature data information, the corresponding data are detected by starting the sensors related to the stage according to the stage, the detected data information is uploaded to the cloud server, the server substitutes the data into the cooling data information and the power consumption data information, the optimal operation data of the water pump (6) and the oil pump (5) are obtained through calculation, the data are returned to the controller, the controller controls the water pump (6) and the oil pump (5) to work according to the returned data, the related data information is transmitted to a user side through the wireless signal transmission module, and the cooling of the transformer is completed.
10. The transformer cooling operation monitoring system according to claim 6, wherein the detecting of the blockage degree of the heat dissipation finned tube (2) comprises the following procedures:
measuring a plurality of groups of numerical data of the operating speed of the oil pump (5) and the first flowmeter under the condition that the oil temperature of the transformer is different and the radiating finned tube (2) is not blocked, uploading the measured data to a cloud server, and calculating by the cloud server to obtain standard data of the numerical data relation between the operating speed of the oil pump (5) and the first flowmeter under the normal operation condition of the oil pump (5);
and measuring the oil temperature data of the transformer, the running speed of the oil pump (5) and the numerical data of the first flowmeter during actual running, uploading the measured data to a cloud server, substituting the measured data into standard data by the cloud server for comparison and calculation, and finishing judging the blockage degree of the radiating finned tube (2) and the running state of the oil pump.
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| CN111351678A (en) * | 2020-04-28 | 2020-06-30 | 广东电网有限责任公司 | Cooling verification method and verification device for power transformer cooling equipment |
| CN113589682A (en) * | 2021-09-28 | 2021-11-02 | 南方电网调峰调频发电有限公司 | Main transformer cooler switching method and system |
| CN113820475A (en) * | 2021-09-16 | 2021-12-21 | 国网江苏省电力有限公司盐城供电分公司 | System for detecting content of oil plugs in transformer oil |
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| CN114914054A (en) * | 2022-04-07 | 2022-08-16 | 上海正尔智能科技股份有限公司 | Transformer with loss monitoring assembly |
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| CN118169612A (en) * | 2024-05-14 | 2024-06-11 | 江西国翔电力设备有限公司 | On-line monitoring system and method for running state of transformer |
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