CN111337287A - Transformer cooler cooling efficiency monitoring system - Google Patents
Transformer cooler cooling efficiency monitoring system Download PDFInfo
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- CN111337287A CN111337287A CN202010328216.6A CN202010328216A CN111337287A CN 111337287 A CN111337287 A CN 111337287A CN 202010328216 A CN202010328216 A CN 202010328216A CN 111337287 A CN111337287 A CN 111337287A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/002—Thermal testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
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Abstract
The invention relates to a cooling efficiency monitoring system of a transformer cooler, which comprises a first parameter acquisition unit, a second parameter acquisition unit, a third parameter acquisition unit and a fourth parameter acquisition unit, wherein the first parameter acquisition unit is used for acquiring a first parameter; the cooling efficiency calculating unit is used for calculating actual cooling efficiency ŋ 1 according to a formula, wherein the rated cooling efficiency of the cooler is ŋ 0 under different environmental temperatures in the test; the control module is used for judging the relation between the actual cooling efficiency ŋ 1 and the rated cooling efficiency ŋ 0, and if the actual cooling efficiency ŋ 1 is within the error threshold range of the rated cooling efficiency ŋ 0, the normal operation of the current cooling medium in the cooler is maintained; if the actual cooling efficiency ŋ 1 is outside the error threshold range of the rated cooling efficiency ŋ 0, a solution corresponding to the actual cooling efficiency ŋ 1 is selected for corresponding processing according to the correspondence between the actual cooling efficiency ŋ 1 and the solution. The cooler is controlled according to the monitoring condition, and the cooling efficiency of the cooled medium is improved.
Description
Technical Field
The invention relates to the technical field of power equipment monitoring, in particular to a cooling efficiency monitoring system of a transformer cooler.
Background
As power usage increases, the capacity requirements for distribution transformers are continually increasing. Because the transformer adopts closed structure, the radiating effect is poor, and heat accumulation is big to be in high voltage, heavy current and full load running state for a long time, directly lead to the heat to concentrate aggravation, the temperature risees, threatens the electrical insulation performance, in addition the distribution transformer who adopts two pole-type distribution transformer platform installation sets up in the open air usually, especially in the summer of burning sun inflammatory, the cooling effect of transformer coolant oil can seriously be influenced to the oil temperature of transformer coolant oil lasts the rising, can cause the damage of transformer even.
Aiming at the problems caused by the temperature rise of the transformer cooling oil, the on-line monitoring technology of the transformer cooling oil temperature is rapidly developed and tends to be mature. In order to monitor the oil temperature of the transformer in real time, a plurality of transformers (especially transformers for some important facilities) are provided with a transformer oil temperature detection device. When the temperature sensor detects that the temperature of the cooling oil of the transformer exceeds the standard, relevant detection data and alarm signals are sent out through a wireless transmission technology, so that patrolmen nearby the transformer can find and process the oil in time, and the stable operation of the transformer is guaranteed.
However, although many devices for online monitoring of the oil temperature of the transformer are currently used, until now, only the monitoring of the oil temperature of the transformer can be realized, and when an inspector near the transformer receives an alarm signal sent by the oil temperature monitoring device, the inspector still needs to collect and carry a variety of maintenance tools, and cannot perform online cooling on the transformer, which inevitably affects the normal operation of a power distribution system. Therefore, the system is provided, not only can the transformer cooling oil be monitored on line in real time, but also the transformer can be cooled and maintained on line according to the monitoring condition, and very important positive influence can be generated on the safe operation of the power distribution system.
Disclosure of Invention
The invention aims to provide a transformer cooler cooling efficiency monitoring system which can monitor the cooling efficiency of a cooled medium of a transformer in real time and control a cooler according to the monitoring condition, thereby enabling the cooling efficiency of the cooled medium to be better.
The above object of the present invention is achieved by the following technical solutions:
a transformer cooler cooling efficiency monitoring system comprises
The first parameter acquisition unit is used for acquiring a temperature value T1 of a cooled medium entering the cooler;
the second parameter acquisition unit is used for acquiring a temperature value T2 of the cooled medium out of the cooler;
the third parameter acquisition unit is used for acquiring a temperature value T3 of the cooling medium entering the cooler;
the fourth parameter acquisition unit is used for acquiring a temperature value T4 of the cooling medium discharged from the cooler;
a cooling efficiency calculating unit, wherein the rated cooling efficiency of the cooler is ŋ 0 according to different environmental temperatures in the test, and the actual cooling efficiency ŋ 1 is calculated according to the formula ŋ = A (T3-T4)/(T2-T1);
the control module is used for judging the relation between the actual cooling efficiency ŋ 1 and the rated cooling efficiency ŋ 0, and if the actual cooling efficiency ŋ 1 is within the error threshold range of the rated cooling efficiency ŋ 0, the normal operation of the current cooling medium in the cooler is maintained; if the actual cooling efficiency ŋ 1 is outside the error threshold range of the rated cooling efficiency ŋ 0, a solution corresponding to the actual cooling efficiency ŋ 1 is selected for corresponding processing according to the correspondence between the actual cooling efficiency ŋ 1 and the solution.
By adopting the technical scheme, the temperature of the cooled medium entering and exiting the cooler is collected through the first parameter collection unit and the second parameter collection unit, the temperature of the cooling medium entering and exiting the cooler is collected through the third parameter collection unit and the fourth parameter collection unit, temperature values T1, T2, T3 and T4 are obtained conveniently, and therefore the actual cooling efficiency of the cooler on the cooled medium is calculated; through the comparison between actual cooling efficiency and rated cooling efficiency, judge whether need carry out corresponding adjustment to cooling medium to carry out real-time supervision to transformer by cooling medium's cooling efficiency, and control the cooler according to the monitoring condition, make by cooling medium's cooling efficiency better.
The invention is further configured to: the cooling system further comprises a cleaning module, and if the actual cooling efficiency ŋ 1 is smaller than the lowest value of the error threshold value of the rated cooling efficiency ŋ 0, the control module controls the cleaning module to clean the heat dissipation device of the cooler.
By adopting the technical scheme, when the actual cooling efficiency ŋ 1 is smaller than the lowest value of the error threshold of the rated cooling efficiency ŋ 0, the heat dissipation device of the cooler is cleaned through the cleaning module, so that the heat exchange between the cooling medium and the cooled medium is improved, and the temperature of the cooled medium is reduced more through the cooler.
The invention is further configured to: the system further comprises an ambient temperature acquisition unit, wherein the ambient temperature acquisition unit is used for acquiring ambient temperature T5, and the control module selects rated cooling efficiency ŋ 0 corresponding to ambient temperature T5 to perform corresponding adjustment according to the corresponding relation between rated cooling efficiency ŋ 0 and ambient temperature T5.
By adopting the technical scheme, the ambient temperature is collected through the ambient temperature collecting unit, so that the rated cooling efficiency is adjusted according to the ambient temperature, and the cooling efficiency of the cooled medium is better.
The invention is further configured to: and the intelligent terminal is used for acquiring the actual cooling efficiency ŋ 1 and presenting the actual cooling efficiency ŋ 1 to monitoring personnel.
By adopting the technical scheme, the monitoring personnel can conveniently and timely process the cooler with poor cooling efficiency according to the actual cooling efficiency presented on the intelligent terminal, and the condition of more serious consequences caused by the reason of the cooler is reduced.
The invention is further configured to: the control module calls a plurality of corresponding solutions and predicts the solution effects to be presented to monitoring personnel through the intelligent terminal, the monitoring personnel selects the corresponding solutions, and when the presented solutions are not selected and the monitoring personnel select at least two of the solution effects, the control module combines subsets of the solutions corresponding to the at least two solution effects to form a new solution meeting the requirements of the monitoring personnel to be provided for the monitoring personnel.
By adopting the technical scheme, the control module provides a corresponding solution and a predicted solution thereof, and how to process the cooler when the cooler has poor cooling effect can be improved for monitoring personnel; meanwhile, the control module updates the solution and the predicted solution effect thereof according to the selection of the monitoring personnel, so that the experience of the monitoring personnel is further enhanced.
The invention is further configured to: the intelligent terminal comprises a reminding module, and if the duration of the actual cooling efficiency ŋ 1 outside the error threshold range of the rated cooling efficiency ŋ 0 is larger than a preset time value, the control module controls the reminding module to give an alarm.
By adopting the technical scheme, when the abnormal time of the cooling efficiency is greater than the preset time value, the cooler is possibly broken or damaged, the monitoring personnel is reminded through the reminding module, and the monitoring personnel can maintain or replace the cooler in time.
The invention is further configured to: the cooling system further comprises a display unit, the display unit is in communication connection with the control module, the control module displays the remaining service life of the cooler or whether the cooler can be normally used to meet the cooling requirement of the transformer according to the corresponding relation between the actual cooling efficiency ŋ 1 and the remaining service life of the cooler.
Adopt above-mentioned technical scheme, judge the remaining life of cooler according to actual cooling efficiency ŋ 1 to show on the display element, be convenient for monitoring personnel in time maintain or change the cooler.
In conclusion, the beneficial technical effects of the invention are as follows: the temperature of the cooled medium entering and exiting the cooler is collected through the first parameter collection unit and the second parameter collection unit, the temperature of the cooling medium entering and exiting the cooler is collected through the third parameter collection unit and the fourth parameter collection unit, temperature values T1, T2, T3 and T4 are obtained conveniently, and therefore the actual cooling efficiency of the cooler on the cooled medium is calculated; through the comparison between actual cooling efficiency and rated cooling efficiency, judge whether need carry out corresponding adjustment to cooling medium to carry out real-time supervision to transformer by cooling medium's cooling efficiency, and control the cooler according to the monitoring condition, make by cooling medium's cooling efficiency better.
Drawings
FIG. 1 is a system block diagram of an embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A transformer cooler cooling efficiency monitoring system is shown in FIG. 1, and comprises a first parameter acquisition unit for acquiring a temperature value T1 of a cooled medium entering a cooler; the second parameter acquisition unit is used for acquiring a temperature value T2 of the cooled medium out of the cooler; the third parameter acquisition unit is used for acquiring a temperature value T3 of the cooling medium entering the cooler; the fourth parameter acquisition unit is used for acquiring a temperature value T4 of the cooling medium discharged from the cooler; a cooling efficiency calculating unit, wherein the rated cooling efficiency of the cooler is ŋ 0 according to different environmental temperatures in the test, and the actual cooling efficiency ŋ 1 is calculated according to the formula ŋ = A (T3-T4)/(T2-T1); the control module is used for judging the relation between the actual cooling efficiency ŋ 1 and the rated cooling efficiency ŋ 0, and if the actual cooling efficiency ŋ 1 is within the error threshold range of the rated cooling efficiency ŋ 0, the normal operation of the current cooling medium in the cooler is maintained; if the actual cooling efficiency ŋ 1 is outside the error threshold range of the rated cooling efficiency ŋ 0, a solution corresponding to the actual cooling efficiency ŋ 1 is selected for corresponding processing according to the correspondence between the actual cooling efficiency ŋ 1 and the solution.
The cooling target medium is a substance to be cooled, and may be oil or water. The cooling medium is a substance for cooling the medium to be cooled, and may be wind, water, oil, or the like. The two materials for realizing the heat conversion are collectively called as heat dissipation materials, such as steel pipes, aluminum pipes or iron pipes. In the invention, the first parameter acquisition unit, the second parameter acquisition unit, the third parameter acquisition unit and the fourth parameter acquisition unit all adopt temperature sensors. The invention can improve the functions of the product, and can get through the links of the equipment terminal and the intelligent thing connection, thereby realizing the intelligent thing connection of the transformer cooler.
The temperature of the cooled medium entering and exiting the cooler is collected through the first parameter collection unit and the second parameter collection unit, the temperature of the cooling medium entering and exiting the cooler is collected through the third parameter collection unit and the fourth parameter collection unit, temperature values T1, T2, T3 and T4 are obtained conveniently, and therefore the actual cooling efficiency of the cooler on the cooled medium is calculated; through the comparison between actual cooling efficiency and rated cooling efficiency, judge whether need carry out corresponding adjustment to cooling medium to carry out real-time supervision to transformer by cooling medium's cooling efficiency, and control the cooler according to the monitoring condition, make by cooling medium's cooling efficiency better.
The control module is used for controlling the cleaning module to clean the heat dissipation equipment of the cooler if the actual cooling efficiency ŋ 1 is smaller than the lowest value of the error threshold value of the rated cooling efficiency ŋ 0; when the actual cooling efficiency ŋ 1 is less than the lowest value of the error threshold of the rated cooling efficiency ŋ 0, the heat sink of the cooler is cleaned by the cleaning module, so that the heat exchange between the cooling medium and the cooled medium is improved, and the temperature of the cooled medium is reduced more by the cooler. The cleaning module of the invention cleans the surfaces of heat dissipation equipment such as steel pipes, aluminum pipes or iron pipes by driving the brush hairs to reciprocate through the motor; also can be the filter screen, and the air intake department at the fan is installed to the filter screen, filters the wind that gets into in the cooler through the filter screen.
The control module selects rated cooling efficiency ŋ corresponding to the ambient temperature T5 to perform corresponding adjustment according to the corresponding relation between the rated cooling efficiency ŋ and the ambient temperature T5; the ambient temperature is collected through the ambient temperature collecting unit, so that the rated cooling efficiency is adjusted according to the ambient temperature, and the cooling efficiency of the cooled medium is better. The display unit is in communication connection with the control module, and the control module displays the residual service life of the cooler or whether the cooler can be normally used to meet the cooling requirement of the transformer according to the corresponding relation between the actual cooling efficiency ŋ 1 and the residual service life of the cooler; the residual service life of the cooler is judged according to the actual cooling efficiency ŋ 1 and is displayed on the display unit, so that monitoring personnel can repair or replace the cooler in time.
The intelligent terminal is used for acquiring the actual cooling efficiency ŋ 1 and presenting the actual cooling efficiency ŋ 1 to monitoring personnel; the monitoring personnel is convenient for in time handle the not good cooler of cooling efficiency according to the actual cooling efficiency who presents on the intelligent terminal, reduces the circumstances that causes more serious consequence because the reason of cooler. The intelligent terminal comprises a reminding module, and if the duration of the actual cooling efficiency ŋ 1 outside the error threshold range of the rated cooling efficiency ŋ 0 is larger than a preset time value, the control module controls the reminding module to give an alarm; when the abnormal time of the cooling efficiency is larger than the preset time value, the cooler is possibly broken or damaged, monitoring personnel are reminded through the reminding module, and the monitoring personnel can maintain or replace the cooler conveniently and timely.
The control module calls a plurality of corresponding solutions and predicts the solution effects and presents the solutions to monitoring personnel through the intelligent terminal, the monitoring personnel select the corresponding solutions, and when the presented solutions are not selected and the monitoring personnel select at least two of the solution effects, the control module combines subsets of the solutions corresponding to the at least two solution effects to form a new solution meeting the requirements of the monitoring personnel and provides the new solution for the monitoring personnel. The control module provides a corresponding solution and a predicted solution effect thereof, and how to process the cooler when the cooler has poor cooling effect can be improved by monitoring personnel; meanwhile, the control module updates the solution and the predicted solution effect thereof according to the selection of the monitoring personnel.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (7)
1. A transformer cooler cooling efficiency monitoring system is characterized by comprising
The first parameter acquisition unit is used for acquiring a temperature value T1 of a cooled medium entering the cooler;
the second parameter acquisition unit is used for acquiring a temperature value T2 of the cooled medium out of the cooler;
the third parameter acquisition unit is used for acquiring a temperature value T3 of the cooling medium entering the cooler;
the fourth parameter acquisition unit is used for acquiring a temperature value T4 of the cooling medium discharged from the cooler;
a cooling efficiency calculating unit, wherein the rated cooling efficiency of the cooler is ŋ 0 according to different environmental temperatures in the test, and the actual cooling efficiency ŋ 1 is calculated according to the formula ŋ = A (T3-T4)/(T2-T1);
a control module for judging the actual cooling efficiency ŋ 1 and the rated cooling efficiency ŋ0If the actual cooling efficiency ŋ 1 is at the rated cooling efficiency ŋ0If the error threshold value is within the range, the normal operation of the cooling medium in the current cooler is maintained; if the actual cooling efficiency ŋ 1 is at the rated cooling efficiency ŋ0Is out of the error threshold range, the solution corresponding to the actual cooling efficiency ŋ 1 is selected for corresponding processing according to the correspondence between the actual cooling efficiency ŋ 1 and the solution.
2. The transformer cooler cooling efficiency monitoring system of claim 1, further comprising a cleaning module if actual cooling efficiency ŋ 1 is less than rated cooling efficiency ŋ0The control module controls the cleaning module to clean the heat sink of the cooler.
3. The system for monitoring cooling efficiency of transformer cooler according to claim 1, further comprising an ambient temperature collecting unit for collecting an ambient temperature T5, wherein the control module is configured to control the cooling efficiency according to a rated cooling efficiency ŋ0The nominal cooling efficiency ŋ corresponding to the ambient temperature T5 is selected in accordance with the correspondence relationship with the ambient temperature T50And carrying out corresponding adjustment.
4. The transformer cooler cooling efficiency monitoring system according to claim 1, further comprising an intelligent terminal for obtaining ŋ 1 actual cooling efficiency and presenting ŋ 1 actual cooling efficiency to a monitoring person.
5. The transformer cooler cooling efficiency monitoring system according to claim 4, wherein the control module calls a plurality of corresponding solutions and predicts the solution effects to be presented to a monitoring person through the intelligent terminal, the monitoring person selects the corresponding solutions, and when the presented solutions are not selected and the monitoring person selects at least two of the solution effects, the control module combines a subset of the plurality of solutions corresponding to the at least two solution effects to form a new solution meeting the requirements of the monitoring person to be provided to the monitoring person.
6. The transformer cooler cooling efficiency monitoring system of claim 4, wherein the intelligent terminal comprises a reminding module if the actual cooling efficiency ŋ 1 is at the rated cooling efficiency ŋ0The duration time outside the error threshold range is larger than a preset time value, and the control module controls the reminding module to give an alarm.
7. The transformer cooler cooling efficiency monitoring system according to claim 1, further comprising a display unit, wherein the display unit is in communication connection with the control module, the control module displays the remaining service life of the cooler or whether the cooler can be normally used to meet the cooling requirement of the transformer according to the correspondence between the actual cooling efficiency ŋ 1 and the remaining service life of the cooler.
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| CN202010328216.6A CN111337287A (en) | 2020-04-23 | 2020-04-23 | Transformer cooler cooling efficiency monitoring system |
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| CN202010328216.6A CN111337287A (en) | 2020-04-23 | 2020-04-23 | Transformer cooler cooling efficiency monitoring system |
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Cited By (3)
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| CN112668198A (en) * | 2021-01-05 | 2021-04-16 | 株洲中车时代电气股份有限公司 | Early warning method and device for filter screen blockage of current transformer in rail train and related equipment |
| CN114459765A (en) * | 2022-01-24 | 2022-05-10 | 东风汽车股份有限公司 | Method for monitoring cooling efficiency of radiator |
| CN117348452A (en) * | 2023-11-03 | 2024-01-05 | 东营市胜凯石化设备有限公司 | Energy-saving control system of petroleum refining air cooler |
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Application publication date: 20200626 |