CN201765524U - Electronic temperature controller of transformer - Google Patents
Electronic temperature controller of transformer Download PDFInfo
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- CN201765524U CN201765524U CN2010205184441U CN201020518444U CN201765524U CN 201765524 U CN201765524 U CN 201765524U CN 2010205184441 U CN2010205184441 U CN 2010205184441U CN 201020518444 U CN201020518444 U CN 201020518444U CN 201765524 U CN201765524 U CN 201765524U
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Abstract
The utility model relates to a electronic temperature controller of a transformer, including a human-machine interactive board and a monitor circuit board, the human-machine interactive board has an operation keyboard and a display, the monitor circuit board has a refrigeration fan control circuit, a temperature controller human-machine interface circuit, a microprocessor system, a temperature controller power supply circuit, a transformer temperature collection circuit and a serial communication interface circuit, the monitor circuit board also has a refrigeration fan overload/open-phase detection circuit and a air cooler open-phase protection circuit; an input end of the air cooler open-phase protection circuit is connected to the microprocessor system, and an output end is connected to a three-phase refrigeration fan; the refrigeration fan overload/open-phase detection circuit is connected to the microprocessor system, an input end of the refrigeration fan overload/open-phase detection circuit is connected to the three-phase refrigeration fan, and an output end is connected to a refrigeration fan overload/open-phase alarm circuit and equipment. The beneficial effect is that functions of temperature collection and measurement of the temperature controller, fan control and fan overload/open-phase detection, open-phase protection, power failure alarm are integrated, cost is low, and reliability is high.
Description
Technical field
The utility model belongs to general power transformer domain of control temperature, relates to a kind of transformer electronic temperature control device.
Background technology
The electronic temperature control device that is used for the control of transformer temperature detection and refrigeration fan is one of important device that guarantees the transformer safe operation.The temperature detection sensor of PT100 platinum resistance as transformer generally adopted in transformer temperature control at present, adopt single-phase or the three-phase blower fan as temperature controlled executive component, adopt microprocessor that the transformer temperature of temperature sensor collection is carried out computing, and according to the transformer temperature that collects refrigeration fan is carried out switch control, control signals such as warning message such as output transformer overtemperature alarm, temperature sensor fault and overtemperature tripping operation.
The workflow of transformer electronic temperature control device is: control circuit start when the transformer temperature is higher than temperature (fan starting temperature) value of setting, open refrigeration fan.Continue to rise as temperature, when reaching the overtemperature alarm temperature spot of setting, start the overtemperature alarm function, send overtemperature alarm information.Further rise as temperature, when reaching the overtemperature trip temperature point of setting, damage for preventing that transformer Yin Wendu is too high, temperature controller will be exported the overtemperature trip signal, can stop the operation of transformer by tripping operation.
The basic function of transformer electronic temperature control device comprises the following aspects:
1) handoff functionality that shows of the touring demonstration with triple-phase line bag temperature and the highest temperature mutually.
2) can control the opening and closing of blower fan according to blow in machine temperature and the Blowing stopper temperature of setting automatically, guarantee transformer safe operation under normal temperature.When the highest phase temperature in the triple-phase line bag temperature surpasses when blowing in the machine temperature, open blower fan, on the temperature controller panel, carry out corresponding demonstration simultaneously.
3) has the overtemperature alarm function.When the highest phase temperature in the three-phase temperature reached the overtemperature alarm temperature, temperature controller was reported to the police, is exported the overtemperature alarm signal by switching value lead-out terminal and universal serial bus, carries out corresponding demonstration simultaneously on the temperature controller panel.
4) have the overtemperature trip avoidance function, when the highest phase temperature in the three-phase temperature reached the overtemperature trip temperature, temperature controller was reported to the police, is exported the overtemperature trip signal by the switching value lead-out terminal, and the control isolating switch cuts off transformer frequency response, avoids transformer to continue overheating operation.Also can export the overtemperature alarm signal simultaneously, and on the temperature controller panel, carry out corresponding demonstration by universal serial bus.
When 5) PT100 sensor any had fault mutually, temperature controller was reported to the police and the output failure alarm signal.
7) manually control the blower fan function, manually the start and stop blower fan.
8) function of time opening blower fan.
9) " black box " function, the transformer three-phase thermograph during with outage makes things convenient for the user to search the power down reason in memory.
Common power transformer electronic temperature control device (system architecture is seen Fig. 1) mostly possesses above function; but not possessing fan trouble detects and phase failure protection function; common temperature controller can't detect when being the refrigeration fan overload or the phase failure; and refrigeration fan overload or open-phase running are easy to cause blower fan to damage; blower fan damage back is easy to cause the out of service or damage in transformer temperature rising back if can not find in time that then transformer will move under the situation of no refrigeration measure.For detecting the refrigeration fan fault and realizing three-phase blower fan phase failure protection function; generally all be to adopt common power transformer electronic temperature control device to add that the mode of A.C. contactor (or AC relay) and electrothermal relay (or other phase failure pick-up unit) composition temperature control box realizes at present; referring to Fig. 2; its complex structure; use inconvenient; and can't carry out dead electricity and report to the police, there is limitation in function.
The utility model content:
The utility model is in order to remedy the deficiencies in the prior art; a kind of transformer electronic temperature control device is provided; it is easy to use, multiple functional; possess blower fan detection, open-phase protection and dead electricity warning function; compact conformation; volume is little, is convenient to installation and maintenance, has improved the reliability of temperature controller when reducing hardware cost greatly.
The utility model is achieved by the following technical solution:
Transformer electronic temperature control device of the present utility model, comprise man-machine interaction plate and telemetry circuit plate, the man-machine interaction plate is provided with operation keyboard and display, the telemetry circuit plate comprises the refrigeration fan control circuit, temperature controller man-machine interface circuit, microprocessor system, the temperature controller power circuit, the transformer temperature collection circuit, serial communication interface circuit, the air-cooler control circuit connects the three-phase system air-cooler, temperature controller man-machine interface circuit connects the operation keyboard and the display of man-machine interaction plate, the temperature controller power circuit connects power supply, the transformer temperature collection circuit connects power transformer, serial communication interface circuit connects the outer monitoring network by the RS485 line, and its special character is: the telemetry circuit plate also comprises refrigeration fan overload/open-phase detection circuit and air-cooler open-phase protection circuit; The input end of air-cooler open-phase protection circuit connects microprocessor system, and output terminal connects the three-phase system air-cooler; Refrigeration fan overload/open-phase detection circuit connects microprocessor system, and refrigeration fan overload/open-phase detection circuit input end connects the three-phase system air-cooler, and output terminal connects refrigeration fan overload/phase breaking alarm circuit and equipment.
Transformer electronic temperature control device of the present utility model, the telemetry circuit plate also comprises temperature controller dead electricity warning circuit, and temperature controller dead electricity warning circuit input end connects temperature controller external power source and temperature controller power circuit, and output terminal connects panalarm.
Principle of work of the present utility model:
The transformer temperature collection circuit is gathered transformer three-phase temperature in real time, and the control circuit start is opened refrigeration fan when the transformer temperature is higher than temperature (fan starting temperature) value of setting.Refrigeration fan overload/open-phase detection circuit is monitored the fan operation situation in real time simultaneously; cut off fan power by the refrigeration fan open-phase protection circuit when finding blower fan overload or open-phase running; prevent the three characteristics of the middle term blower fan partial short-circuit from causing overcurrent and open-phase running and damage blower fan, send blower fan overload or phase breaking alarm signal simultaneously and inform that the Operation of Electric Systems personnel in time handle.
In the whole service process of temperature controller, temperature controller dead electricity warning circuit is monitored temperature controller system works voltage in real time, when detecting the related work electric voltage exception, send temperature controller dead electricity alerting signal immediately, inform that the Operation of Electric Systems personnel in time handle, effectively avoid because of failing to find that in time the temperature controller dead electricity causes the out of control situation of transformer temperature to take place.
The difference of the utility model and system shown in Figure 1 is:
Common power transformer electronic temperature control device shown in Figure 1 possesses functions such as transformer temperature acquisition, refrigeration fan control, the warning of PT100 sensor fault, overtemperature alarm, overtemperature tripping operation and serial communication, but does not possess functions such as fan trouble detection and open-phase protection.The utility model (Fig. 3) is except that possessing the repertoire that common power transformer electronic temperature control device shown in Figure 1 possesses; also possess refrigeration fan overload detection and phase failure protection function; improved the reliability of transformer temperature control system; can effectively prevent the three characteristics of the middle term blower fan partial short-circuit from causing overcurrent and open-phase running and damage blower fan, effectively avoid because of failing to find that in time the situation that the refrigeration fan fault causes the transformer temperature to rise takes place.
The utility model also possesses temperature controller dead electricity warning function simultaneously, under the situation of the electric power disconnection of supplying with temperature controller or the power fail of temperature controller own, temperature controller dead electricity alerting signal can outwards be provided, thereby the system operations staff of making can grasp temperature controller ruuning situation in real time, effectively avoids because of failing to find that in time the temperature controller dead electricity causes the out of control situation of transformer temperature to take place.
The difference of the utility model and system shown in Figure 2 is:
The utility model realizes that with temperature acquisition, blower fan control function and blower fan overload detection, the phase failure protection function of common power transformer electronic temperature control device circuit is integrated on the telemetry circuit plate; transformer electronic temperature control case like that need be in the temperature controller external cabling shown in needn't image pattern 2; also avoided simultaneously using the electrical equipment that volume is big and cost is higher that adopts in the temperature control box, as A.C. contactor/AC relay, electrothermal relay/other phase failure pick-up unit etc.The utility model system architecture compactness, volume is little, is convenient to installation and maintenance, has improved the reliability of temperature controller when reducing hardware cost greatly.Effectively overcome the defective of system shown in Figure 2 cost height, poor reliability.
Transformer electronic temperature control device of the present utility model; except that all functions that possess common temperature controller; also possess refrigeration fan overload detection and phase failure protection function; voltage and current by real-time monitoring system air-cooler three phase windings; when one phase/ployphase voltages or electric current surpassed setting value, temperature controller cut off the three-phase supply of refrigeration fan at once and sends alerting signal.Improved the reliability of transformer temperature control system, can prevent effectively that the three characteristics of the middle term blower fan partial short-circuit from causing overcurrent and open-phase running and damaging blower fan, effectively avoided because of failing to find that in time the situation that the refrigeration fan fault causes the transformer temperature to rise takes place.
This temperature controller also possesses temperature controller dead electricity warning function, the external power source of supplying with temperature controller open circuit or the situation of the power fail of temperature controller own under, can provide temperature controller dead electricity alerting signal to the outside, thereby the system operations staff of making can grasp temperature controller ruuning situation in real time, effectively avoid because of failing to find that in time the temperature controller dead electricity causes the out of control situation of transformer temperature to take place, and better guarantees unmanned electric power system safety.
In addition; this temperature controller with the temperature acquisition of common power transformer electronic temperature control device measure, function realization circuit such as blower fan control function and blower fan overload/phase failure detection, open-phase protection, dead electricity warning are integrated on the telemetry circuit plate; the system architecture compactness; volume is little; be convenient to installation and maintenance, when reducing hardware cost greatly, improved the reliability of temperature controller.
Description of drawings
Fig. 1 is existing common power transformer electronic temperature control device synoptic diagram.Fig. 2 is the existing transformer electronic temperature control case synoptic diagram that possesses blower fan detection and phase failure protection function.Fig. 3 is the transformer electronic temperature control device synoptic diagram that possesses blower fan detection and phase failure protection function of the present utility model.
Embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.
Transformer electronic temperature control device of the present utility model, comprise man-machine interaction plate and telemetry circuit plate, the man-machine interaction plate is provided with operation keyboard and display, the telemetry circuit plate comprises the refrigeration fan control circuit, temperature controller man-machine interface circuit, microprocessor system, the temperature controller power circuit, the transformer temperature collection circuit, serial communication interface circuit, the air-cooler control circuit connects the three-phase system air-cooler, temperature controller man-machine interface circuit connects the operation keyboard and the display of man-machine interaction plate, the temperature controller power circuit connects power supply, the transformer temperature collection circuit connects power transformer, serial communication interface circuit connects the outer monitoring network by the RS485 line, and its special character is: the telemetry circuit plate also comprises refrigeration fan overload/open-phase detection circuit and air-cooler open-phase protection circuit; The input end of air-cooler open-phase protection circuit connects microprocessor system, and output terminal connects the three-phase system air-cooler; Refrigeration fan overload/open-phase detection circuit connects microprocessor system, and refrigeration fan overload/open-phase detection circuit input end connects the three-phase system air-cooler, and output terminal connects refrigeration fan overload/phase breaking alarm circuit and equipment.The telemetry circuit plate also comprises temperature controller dead electricity warning circuit, and temperature controller dead electricity warning circuit input end connects temperature controller external power source and temperature controller power circuit, and output terminal connects panalarm.
Transformer electronic temperature control device of the present utility model adopts the PT100 platinum resistance temperature sensor to gather the three-phase temperature (dry-type transformer) or the oil temperature (oil-filled transformer) of transformer, the data that collect are carried out processing such as gamma correction through A/D (mould/number) conversion back by the sixteen bit microprocessing systems, the data of handling well are delivered to the man-machine interaction plate and are shown, can be sent to background monitoring software by the RS485 bus simultaneously.When temperature surpasses user's value of setting, carry out warning such as overtemperature alarm, overtemperature tripping operation and the transformer refrigeration fan is carried out associative operation; When blower fan overload or open-phase running, cut off fan power, prevent that the three characteristics of the middle term blower fan partial short-circuit from causing overcurrent and open-phase running and damaging blower fan by the refrigeration fan open-phase protection circuit; Sending temperature controller dead electricity alerting signal reporting system operations staff when the temperature controller dead electricity in time handles.The sixteen bit microprocessing systems also can be provided with according to the user and realize functions such as maximum temperature record, power down thermograph and blower fan regularly start.
The sixteen bit microprocessing systems adopts the MSP430 series monolithic of Texas Instruments as the main control chip.The MSP430 series monolithic is one 16 a single-chip microcomputer, has adopted reduced instruction set computer (RISC) structure, has abundant addressing mode (7 kinds of source operand addressing, 4 kinds of destination operand addressing), succinct core instructions and a large amount of dummy instructions; Data-carrier store all can be participated in multiple computing in a large amount of registers and the sheet; The processing instruction of tabling look-up efficiently in addition; Higher processing speed is arranged, and is 125ns in the 8MHz crystal-driven cycle of giving an order.These characteristics have guaranteed to work out out high efficiency source program.The MSP430 series monolithic is integrated more rich interior peripheral hardware comprises house dog, analog comparator, timer, serial ports, hardware multiplier, liquid crystal driver etc.Be made as inside and outside these sheets that temperature controller is effectively finished collection, processing, overtemperature alarm, overtemperature tripping operation, maximum temperature record, the power down thermograph of transformer three-phase temperature (or oil temperature) and environment temperature, blower fan regularly starts and refrigeration fan overload detection and functions such as open-phase protection, the alarm of temperature controller dead electricity provide great convenience.
The realization circuit of this temperature controller all adopts the technical grade chip, adopts the high-performance microprocessor of 16 bit, has good stability and degree of accuracy, function is strong, easy to operate, and circuit performance is superior, and antijamming capability is strong, can adapt to comparatively bad working environment, reliable.The domain of control temperature that can be widely used in 35 kilovolts of following grade power transformers.
The technology that this transformer electronic temperature control device adopts comprises data acquisition technology, Microcomputer Controling Technique, data-storing technology, I
2Adjustment of C bus and memory technology, electromagnetism Anti-Jamming Technique, serial data communication technology, PT100 gamma correction technology and software reliability designing technique etc.
Claims (2)
1. transformer electronic temperature control device, comprise man-machine interaction plate and telemetry circuit plate, the man-machine interaction plate is provided with operation keyboard and display, the telemetry circuit plate comprises the refrigeration fan control circuit, temperature controller man-machine interface circuit, microprocessor system, the temperature controller power circuit, the transformer temperature collection circuit, serial communication interface circuit, the air-cooler control circuit connects the three-phase system air-cooler, temperature controller man-machine interface circuit connects the operation keyboard and the display of man-machine interaction plate, the temperature controller power circuit connects power supply, the transformer temperature collection circuit connects power transformer, serial communication interface circuit connects the outer monitoring network by the RS485 line, and it is characterized in that: the telemetry circuit plate also comprises refrigeration fan overload/open-phase detection circuit and air-cooler open-phase protection circuit; The input end of air-cooler open-phase protection circuit connects microprocessor system, and output terminal connects the three-phase system air-cooler; Refrigeration fan overload/open-phase detection circuit connects microprocessor system, and refrigeration fan overload/open-phase detection circuit input end connects the three-phase system air-cooler, and output terminal connects refrigeration fan overload/phase breaking alarm circuit and equipment.
2. transformer electronic temperature control device according to claim 1, it is characterized in that: the telemetry circuit plate also comprises temperature controller dead electricity warning circuit, temperature controller dead electricity warning circuit input end connects temperature controller external power source and temperature controller power circuit, and output terminal connects panalarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205184441U CN201765524U (en) | 2010-09-07 | 2010-09-07 | Electronic temperature controller of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205184441U CN201765524U (en) | 2010-09-07 | 2010-09-07 | Electronic temperature controller of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201765524U true CN201765524U (en) | 2011-03-16 |
Family
ID=43718133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205184441U Expired - Fee Related CN201765524U (en) | 2010-09-07 | 2010-09-07 | Electronic temperature controller of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201765524U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101937241A (en) * | 2010-09-07 | 2011-01-05 | 山东达驰电气有限公司 | Electronic temperature controller of transformer |
| CN102638097A (en) * | 2012-03-26 | 2012-08-15 | 天津市三源电力设备制造有限公司 | Remote concentrated measurement and control system for distribution network |
| CN108107948A (en) * | 2017-12-20 | 2018-06-01 | 合肥齐泰光电科技有限公司 | A kind of Temperature Controller for Dry-Type Transformer |
-
2010
- 2010-09-07 CN CN2010205184441U patent/CN201765524U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101937241A (en) * | 2010-09-07 | 2011-01-05 | 山东达驰电气有限公司 | Electronic temperature controller of transformer |
| CN102638097A (en) * | 2012-03-26 | 2012-08-15 | 天津市三源电力设备制造有限公司 | Remote concentrated measurement and control system for distribution network |
| CN108107948A (en) * | 2017-12-20 | 2018-06-01 | 合肥齐泰光电科技有限公司 | A kind of Temperature Controller for Dry-Type Transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110316 Termination date: 20130907 |