CN109767894A - Transformer intelligent air-cooling frequency conversion integrated system - Google Patents
Transformer intelligent air-cooling frequency conversion integrated system Download PDFInfo
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- CN109767894A CN109767894A CN201910199978.8A CN201910199978A CN109767894A CN 109767894 A CN109767894 A CN 109767894A CN 201910199978 A CN201910199978 A CN 201910199978A CN 109767894 A CN109767894 A CN 109767894A
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Abstract
变压器智能风冷变频集成系统，涉及变压器控温领域。本发明是为了解决现有的冷却系统一直对变压器温度进行降温，使得耗能大的问题。控制单元用于实时采集变压器顶层油温或负载电流，获得频率值，将该频率值与设定阈值进行比较，输出变频信号；变频器用于根据该变频信号控制正常使用的冷却器风机组内的一个冷却器风机或多个冷却器风机进行投切，并控制投切的冷却器风机转速，还用于当正常使用的冷却器风机组损坏时，自动跳转到备用的冷却器风机组，对备用的冷却器风机组的投切数量进行控制并控制投切的冷却器风机转速；保护单元用于当备用的冷却器风机组损坏时，自动跳转到手动模式工作，实现对变压器温度的风冷控制。它用于自动控制风冷投切数量。
A transformer intelligent air-cooled variable frequency integrated system relates to the field of transformer temperature control. The present invention is to solve the problem that the existing cooling system keeps cooling down the temperature of the transformer, resulting in high energy consumption. The control unit is used to collect the oil temperature or load current of the top layer of the transformer in real time, obtain the frequency value, compare the frequency value with the set threshold value, and output the frequency conversion signal; One cooler fan or multiple cooler fans are switched on and off, and the speed of the switched cooler fans is controlled. It is also used to automatically jump to the standby cooler fan unit when the normally used cooler fan unit is damaged. The switching quantity of the standby cooler fan unit is controlled and the speed of the switching cooler fan is controlled; the protection unit is used to automatically switch to the manual mode when the standby cooler fan unit is damaged, so as to realize the ventilation of the transformer temperature. Cold control. It is used to automatically control the number of air-cooled switching.
Description
Technical field
The present invention relates to transformer intelligent air-cooling frequency conversion integrated systems.Belong to transformer temperature control field.
Background technique
Cooling system is one of important component of transformer, its effect is the heat for generating transformer in operation
Amount distributes, and is maintained at transformer temperature in reasonable range, to guarantee transformer safety, stable operation.It is cooling
System mainly plays refrigerating function under the operating of blower, and blower is also the main energy consumption equipment of cooling system.However existing skill
In art, no matter transformer temperature whether in the normal range, the blower in cooling system is at unbalanced power frequency mode
Working condition, energy consumption is big, will result in many energy consumptions unnecessary in this way, all generates bad shadow to economic benefit and environmental protection
It rings.
Summary of the invention
The present invention is to ask to solve existing cooling system and cool down to transformer temperature always so that energy consumption is big
Topic.Transformer intelligent air-cooling frequency conversion integrated system is now provided.
Transformer intelligent air-cooling frequency conversion integrated system, it includes control unit, two groups of cooler blower fan groups, frequency converter and guarantor
Unit is protected,
Two groups of cooler blower fan groups are provided in transformer cabinet body 1,
Two groups of cooler blower fan groups have redundancy, and one group of cooler blower fan group 5 for normal use, another group is spare
Cooler blower fan group 6,
Control unit 3, for acquiring transformer top-oil temperature or load current in real time, according to the oil temperature or load current,
Frequency values are obtained, which is compared with given threshold, export frequency variation signal；
Frequency converter 4, for receiving frequency variation signal, according in the cooler blower fan group 5 of frequency variation signal control normal use
A cooler blower or multiple cooler blowers carry out switching, and control the cooler rotation speed of fan of switching, be also used to work as
When the cooler blower fan group 5 of normal use is damaged, spare cooler blower fan group 6 is automatic jumped to, to spare cooler wind
The switched amount of unit 6 is controlled and controls the cooler rotation speed of fan of switching；
Protection location, for automatic jumping to manual mode operation when the spare damage of cooler blower fan group 6, thus
Realize the air-cooled control to transformer temperature.
The invention has the benefit that
The transformer intelligent air-cooling frequency-conversion control cabinet of the application is controlled using PLC program, real-time tracking transformer load feelings
Condition acquires transformer top-oil temperature, accomplishes stepless frequency conversion, rather than uses switch/relay frequent starting classification switching cooling
Device group.To greatly reducing accident potential, the safe operation of transformer and entire power grid is effectively protected, improves and is
The stability of system.
The operation of the transformer intelligent air-cooling frequency-conversion control cabinet of the application is executed according to control unit, function and definite value
On-line tuning can be required according to different situations and user, with scalability, it can be achieved that being communicated with substation's microcomputer-based intelligent, on
Operating parameter is passed, automatic switching auxiliary, spare cooler, the working condition of automatic alternate cooler etc., realization is unattended, mentions
The degree of automation of high substation.
The cooler blower of the application at runtime consumed by power and revolving speed cube directly proportional, traditional power frequency operation
The hot redundancy of blower it is very high.Transformer intelligent air-cooling frequency-conversion control cabinet economizes on electricity at least between 30%~50% in the system, according to
Conservative estimation, when economize on electricity 30%, 5 groups of coolers are equivalent to and save 1.5 groups of coolers investment, calculated with every group of cooler 3KW,
Electricity: 1.5 × 3 × 24 × 365=39420KWH can be saved within 1 year, therefore, the application economical operation, service life height.
Sound when cooler group fan is run is one of main source of transformer noise.Through actual measurement, power frequency fortune
Its noise maximum value of capable fan motor can reach 120 decibels.The smooth adjustment and low speed of frequency control air cooler are run, can
Effectively inhibit resulting noise, reduce the noise level of transformer, improves the performance indicator of transformer.
The hot redundancy of the blower of the tradition power frequency operation is very high, and energy consumption is also bigger.Converting operation can reduce hot redundancy, reduce
Energy consumption.Converting discharge amount for energy can be seen that converting operation undoubtedly most low-carbon, environmental protection.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of transformer cabinet body；
Fig. 2 is the schematic illustration of transformer intelligent air-cooling frequency conversion integrated system described in specific embodiment one.
Specific embodiment
Specific embodiment 1: present embodiment is illustrated referring to Figures 1 and 2, transformer described in present embodiment
Intelligent air-cooled frequency conversion integrated system, it includes control unit, two groups of cooler blower fan groups and frequency converter,
Two groups of cooler blower fan groups are provided in transformer cabinet body 1,
Two groups of cooler blower fan groups have redundancy, and one group of cooler blower fan group 5 for normal use, another group is spare
Cooler blower fan group 6,
Control unit 3, for acquiring transformer top-oil temperature or load current in real time, according to the oil temperature or load current,
Frequency values are obtained, which is compared with given threshold, export frequency variation signal；
Frequency converter 4, for receiving frequency variation signal, according in the cooler blower fan group 5 of frequency variation signal control normal use
A cooler blower or multiple cooler blowers carry out switching, and control the cooler rotation speed of fan of switching, be also used to work as
When the cooler blower fan group 5 of normal use is damaged, spare cooler blower fan group 6 is automatic jumped to, to spare cooler wind
The switched amount of unit 6 is controlled and controls the cooler rotation speed of fan of switching；
Protection location, for automatic jumping to manual mode operation when the spare damage of cooler blower fan group 6, thus
Realize the air-cooled control to transformer temperature.
In present embodiment, the transformer intelligent air-cooling control cabinet of the application is to reduce transformer station high-voltage side bus power consumption, operation
Noise and realization intelligence turn to the transformer cooling control system of new generation of design object development, and the system is cold by existing transformer
But the working condition of main energy consumption equipment-blower is changed to mildly load change according to transformer oil by unbalanced power frequency mode in system
Change, the variable mode of equilibrium adjustment revolving speed, and strengthen operating status output, the alarm indication of fault diagnosis can also be set,
The application is the preferred product of substation, and is used widely in intelligent substationization transformation.
The application can configure intelligent communication component according to user's needs, host computer communication be realized, by transformer and blower
The multi informations such as operating status it is real-time on send to master control room, while equipment running status can be shown in the man-machine interface of control cabinet
And fault message；When a failure occurs, it can will be sent on fault message in time to master control room and accurately be shown, effectively shorten dimension
The time is repaired, the intelligent level of power grid is improved.
The application has active force circuit over-current over-voltage protection, open-phase protection, loss protecting and manual spare investment function
Can, (when even one group of cooler breaks down, spare group of cooler can be direct plungeed into；Two groups or more cooler is simultaneously
When failure, manual mode operation directly can be jumped to by automatic mode.To ensure that the safe operation of system.)
Specific embodiment 2: present embodiment is to transformer intelligent air-cooling frequency conversion collection described in specific embodiment one
It is described further at system, in present embodiment, according to the load current, obtains the formula of frequency values f are as follows:
In formula, I is load current；
According to transformer top-oil temperature, the formula of frequency values f is obtained are as follows:
In formula, T is transformer top-oil temperature.
Specific embodiment 3: present embodiment is to transformer intelligent air-cooling frequency conversion collection described in specific embodiment one
It being described further at system, in present embodiment, it further includes the brim of a hat,
The brim of a hat 2 is provided at the top of transformer cabinet body 1, ventilation hole is arranged in transformer cabinet body 1, and disposed at air vent installs gauze additional.
Specific embodiment 4: present embodiment is to transformer intelligent air-cooling frequency conversion collection described in specific embodiment one
It is described further at system, in present embodiment, frequency converter realizes control using PLC.
Specific embodiment 5: present embodiment is to transformer intelligent air-cooling frequency conversion collection described in specific embodiment one
It is described further at system, in present embodiment, transformer cabinet body 1 is stainless steel material.
In present embodiment, cabinet selects the high-quality stainless steel of 2.0 thickness to be made, and surface is through stringent wire drawing process.In case
It installs temperature and humidity controller additional, installs the brim of a hat of dustproof and rainproof at the top of cabinet body additional, ventilation hole installs gauze and blower additional.Using the anti-of Double Tops
Canopy structure, thus effective weather proof, high temperature-proof, dust-proof and exsiccation.Front and back door, landing installation.Outdoor use
Grade reaches IP54.
Specific embodiment 6: present embodiment is to transformer intelligent air-cooling frequency conversion collection described in specific embodiment one
It is described further at system, in present embodiment, it further includes host computer, and host computer is used to show the cooler of work at present
The switched amount of blower fan group and the cooler blower.
Claims (6)
1. transformer intelligent air-cooling frequency conversion integrated system, which is characterized in that it include control unit, two groups of cooler blower fan groups,
Frequency converter and protection location,
Two groups of cooler blower fan groups are provided in transformer cabinet body (1),
Two groups of cooler blower fan groups have redundancy, and one group of cooler blower fan group (5) for normal use, another group is spare
Cooler blower fan group (6),
Control unit (3) is obtained for acquisition transformer top-oil temperature or load current in real time according to the oil temperature or load current
Frequency values are obtained, which is compared with given threshold, export frequency variation signal；
Frequency converter (4), for receiving frequency variation signal, the cooler blower fan group (5) for controlling normal use according to the frequency variation signal is interior
A cooler blower or multiple cooler blowers carry out switching, and control the cooler rotation speed of fan of switching, be also used to work as
When cooler blower fan group (5) damage of normal use, spare cooler blower fan group (6) is automatic jumped to, to spare cooling
The switched amount of device blower fan group (6) is controlled and controls the cooler rotation speed of fan of switching；
Protection location, for automatic jumping to manual mode operation when spare cooler blower fan group (6) damage, thus real
Now to the air-cooled control of transformer temperature.
2. transformer intelligent air-cooling frequency conversion integrated system according to claim 1, which is characterized in that according to the load current,
Obtain the formula of frequency values f are as follows:
In formula, I is load current；
According to transformer top-oil temperature, the formula of frequency values f is obtained are as follows:
In formula, T is transformer top-oil temperature.
3. transformer intelligent air-cooling frequency conversion integrated system according to claim 1, which is characterized in that it further includes the brim of a hat (2),
It is provided with the brim of a hat (2) at the top of transformer cabinet body (1), ventilation hole is arranged in transformer cabinet body (1), and disposed at air vent installs yarn additional
Net.
4. transformer intelligent air-cooling frequency conversion integrated system according to claim 1, which is characterized in that frequency converter is real using PLC
Now control.
5. transformer intelligent air-cooling frequency conversion integrated system according to claim 1, which is characterized in that transformer cabinet body (1) is
Stainless steel material.
6. transformer intelligent air-cooling frequency conversion integrated system according to claim 1, which is characterized in that it further includes host computer,
Host computer is for showing the cooler blower fan group of work at present and the switched amount of the cooler blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910199978.8A CN109767894A (en) | 2019-03-15 | 2019-03-15 | Transformer intelligent air-cooling frequency conversion integrated system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910199978.8A CN109767894A (en) | 2019-03-15 | 2019-03-15 | Transformer intelligent air-cooling frequency conversion integrated system |
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| Publication Number | Publication Date |
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| CN109767894A true CN109767894A (en) | 2019-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910199978.8A Pending CN109767894A (en) | 2019-03-15 | 2019-03-15 | Transformer intelligent air-cooling frequency conversion integrated system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116133329A (en) * | 2022-12-26 | 2023-05-16 | 罗红宇 | Cooling device and cooling method for photovoltaic box-type transformer |
| CN121025601A (en) * | 2025-10-31 | 2025-11-28 | 广州瑞姆节能设备有限公司 | A method and system for coordinated control of digital frequency converter units |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655095A (en) * | 2016-03-22 | 2016-06-08 | 国网山西省电力公司临汾供电公司 | Air-cooled control device |
| CN107450458A (en) * | 2017-07-28 | 2017-12-08 | 陕西金源自动化科技有限公司 | A kind of energy saving transformer cooler switch board and its control method |
| CN207503068U (en) * | 2017-10-12 | 2018-06-15 | 国电南瑞科技股份有限公司 | A kind of energy-saving main transformer cooler switch board |
-
2019
- 2019-03-15 CN CN201910199978.8A patent/CN109767894A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655095A (en) * | 2016-03-22 | 2016-06-08 | 国网山西省电力公司临汾供电公司 | Air-cooled control device |
| CN107450458A (en) * | 2017-07-28 | 2017-12-08 | 陕西金源自动化科技有限公司 | A kind of energy saving transformer cooler switch board and its control method |
| CN207503068U (en) * | 2017-10-12 | 2018-06-15 | 国电南瑞科技股份有限公司 | A kind of energy-saving main transformer cooler switch board |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116133329A (en) * | 2022-12-26 | 2023-05-16 | 罗红宇 | Cooling device and cooling method for photovoltaic box-type transformer |
| CN121025601A (en) * | 2025-10-31 | 2025-11-28 | 广州瑞姆节能设备有限公司 | A method and system for coordinated control of digital frequency converter units |
| CN121025601B (en) * | 2025-10-31 | 2025-12-30 | 广州瑞姆节能设备有限公司 | Digital frequency converter set cooperative regulation and control method and system |
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