CN202102282U - Monitoring and controlling device for cooler of transformer - Google Patents
Monitoring and controlling device for cooler of transformer Download PDFInfo
- Publication number
- CN202102282U CN202102282U CN201120002206XU CN201120002206U CN202102282U CN 202102282 U CN202102282 U CN 202102282U CN 201120002206X U CN201120002206X U CN 201120002206XU CN 201120002206 U CN201120002206 U CN 201120002206U CN 202102282 U CN202102282 U CN 202102282U
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- Prior art keywords
- transformer
- monitoring
- pce
- processing
- cooler
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Abstract
The utility model relates to a monitoring and controlling device for a cooler of a transformer, which comprises a processing control unit and a measurement sensor. The processing control unit is connected with the measurement sensor by the aid of an RS 485 interface, the measurement sensor is connected with the cooler, and the processing control unit is in communication connection with a main intelligent electronic device for monitoring the transformer by the aid of a 100-megabit Ethernet. Start and stop of elements of a cooling system are controlled automatically by the aid of an embedded processor and a PLC (programmable logic controller). The processing control unit which adopts the redundancy design of automatic switching of double PLCs effectively solves the problem of system failure caused by faults or dead halt of the single PLC. The monitoring and controlling device can monitor running states of the cooler based on the IEC61850 protocol and set parameters thereof locally or by the aid of a network.
Description
Technical field
The utility model relates to a kind of transformer cooler monitoring and control device.
Background technology
The automatic control of traditional high-power transformer cooling system is that the employing relay switch is main electrical control circuit, and cooling system is prone to frequent starting, and relay switch is prone to wear out, corrodes and breaks down, and can't be used for dispatching automation communication.Propelling along with State Grid Corporation of China's intelligent substation construction; Traditional transformer cooler monitoring and control device can not satisfy the objective requirement of intelligent substation management and development; Substitute present implementation with monitoring of intelligentized transformer cooler and control device, for the reliability service of transformer provides safety guarantee.
The utility model content
The utility model technical matters to be solved provides a kind of transformer cooler monitoring and control device; Overcome the easy frequent starting of cooling system in the prior art; Relay switch is prone to wear out, corrodes and breaks down, and can't satisfy the defective of intelligent substation management.
For solving the problems of the technologies described above; The utility model provides a kind of transformer cooler monitoring and control device, it is characterized in that, comprises processing and control element (PCE); Said processing and control element (PCE) connects sensor through the RS485 interface; Said sensor connects said refrigeratory and transformer, and said processing and control element (PCE) connects said refrigeratory through drive circuit unit, and said processing and control element (PCE) is connected communication through 100 m ethernet with transformer monitoring master intelligent electronic device.
Further, said processing and control element (PCE) also through the switching value signal wire, connects on-the-spot switching value signal transducer.
Further, said Ethernet is an optical networking, the optical fiber communication stipulations are IEC61850.
Most preferred, said processing and control element (PCE) is the redundancy structure of flush bonding processor and two PLC automatic switchover operations.
The utility model is gathered all cooling system signals of transformer; And they are monitored in real time; Be transformed to the digital quantity signal that PLC discerns through the oily gentle load current analog quantity that will gather, adopt the software programming of PLC steering logic, realize automatic control the cooling system element start and stop.Processing and control element (PCE) adopts the automatically switch Redundancy Design of operation of two PLC, the risk problem that the system that brings because of PLC fault or deadlock that has overcome effectively that the irredundant design of single PLC exists can't move.The utility model can local or through network realize based on the refrigeratory running state monitoring of IEC61850 stipulations with carry out the parameter setting.
Description of drawings
Further specify below in conjunction with accompanying drawing and embodiment technical scheme the utility model.
Fig. 1 is that the transformer cooler control device of the utility model is formed synoptic diagram.
Embodiment
The utility model device is mainly monitored fan and by parameters such as the electric current of Oil pump electrical machinery and driving power, top oil temperature, loads, and goes out the cooling effectiveness of winding focus and cooling system according to transformer thermal load model assessment.The hardware principle block diagram is as shown in Figure 1; Its core devices processing and control element (PCE) is selected the Power PC processor MPC8247 of dominant frequency 600MHz for use; Operation Linux embedded OS on it; Last 50 on-the-spot switching value inputs, 10 the switching value output ports of having of MPC8247, the fault of additional device, operating state signal are through these 50 on-the-spot switching value input port input MPC8247.Processing and control element (PCE) adopts the automatically switch Redundancy Design of operation of two PLC, the system's operation risk that brings because of single PLC fault or deadlock that has overcome that the irredundant design of single PLC exists.Processing and control element (PCE) connects the sensor or the instrument of refrigeratory on the spot through the RS485ModBus interface; Gather parameters such as transformer top oil temperature and load current; According to IEEE C57.91-1995/IEC354 guide rule calculating transformer hot spot temperature of winding, and coupling system software carries out data processing, and processing and control element (PCE) is also through the switching value signal wire; Connect on-the-spot switching value signal transducer, gather fault, the operating state signal of additional device.According to the state and the assessment result that monitor, the fan and the oil pump of cooling unit are controlled through the automatic or manual switch unit.The automatic or manual switch unit is the driving circuit of refrigeratory, has manual, automatic, long-range three kinds of methods of operation, can realize remote monitoring operation and failure message, carry out parameter setting and setting state on the spot and through network.The state estimation of cooling system with cooling effectiveness RTH (thermal resistance) as characteristic parameter.During normal condition, RTH is a constant, when RTH increases and surpass warning value, can judge that fault has taken place cooling system.
Processing and control element (PCE) inserts transformer station's process layer network, and carries out data encapsulation to the state and the data based IEC61850 stipulations of assessment result that monitor, communicates by letter with transformer monitoring master IED through 100,000,000 fiber optic Ethernets.Transformer monitoring master IED adopts IEC61850-8-1 (the operation power of band safety is selected control) stipulations to accomplish the Long-distance Control to device.
The interval time that processing and control element (PCE) can be provided with according to the user; Send a message to transformer monitoring master IED; Message format is " trouble location, fault mode (internal discharge type), degree of risk (representing with percentage), an equipment state ", and " degree of risk " every increase 5% increases sends message once.Real-time/historical data application system unified management that the message that transformer monitoring master IED receives is included the PI of Utilities Electric Co. in can be given full play to the efficient data of PI system and store and the complicated calculations advantage.
It should be noted last that; Above embodiment is only unrestricted in order to the technical scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technical scheme of the utility model; And not breaking away from the spirit and the scope of the utility model technical scheme, it all should be encompassed in the middle of the claim scope of the utility model.
Claims (4)
1. a transformer cooler is monitored and control device; It is characterized in that; Comprise processing and control element (PCE), said processing and control element (PCE) connects sensor through the RS485 interface, and said sensor connects said refrigeratory and transformer; Said processing and control element (PCE) connects said refrigeratory through driving circuit, and said processing and control element (PCE) is connected communication through 100 m ethernet with transformer monitoring master intelligent electronic device.
2. transformer cooler monitoring according to claim 1 and control device is characterized in that said processing and control element (PCE) also through the switching value signal wire, connects on-the-spot switching value signal transducer.
3. transformer cooler monitoring according to claim 1 and 2 and control device is characterized in that said Ethernet is an optical networking.
4. transformer cooler monitoring according to claim 3 and control device is characterized in that, said processing and control element (PCE) is the redundancy structure of flush bonding processor and two PLC automatic switchover operations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120002206XU CN202102282U (en) | 2011-01-06 | 2011-01-06 | Monitoring and controlling device for cooler of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120002206XU CN202102282U (en) | 2011-01-06 | 2011-01-06 | Monitoring and controlling device for cooler of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202102282U true CN202102282U (en) | 2012-01-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120002206XU Expired - Fee Related CN202102282U (en) | 2011-01-06 | 2011-01-06 | Monitoring and controlling device for cooler of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202102282U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102592784A (en) * | 2012-02-20 | 2012-07-18 | 四川电力科学研究院 | Cooling control integrated access device based on of distributed network for intelligent substation |
| CN102722193A (en) * | 2012-06-25 | 2012-10-10 | 甘景福 | Method for slowing down aging of solid insulation of oil-paper insulating transformer |
| CN106527214A (en) * | 2015-09-14 | 2017-03-22 | 四方特变电工智能电气有限公司 | Dual-configuration method of intelligent electronic controller of transformer |
-
2011
- 2011-01-06 CN CN201120002206XU patent/CN202102282U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102592784A (en) * | 2012-02-20 | 2012-07-18 | 四川电力科学研究院 | Cooling control integrated access device based on of distributed network for intelligent substation |
| CN102722193A (en) * | 2012-06-25 | 2012-10-10 | 甘景福 | Method for slowing down aging of solid insulation of oil-paper insulating transformer |
| CN102722193B (en) * | 2012-06-25 | 2014-02-19 | 甘景福 | Method for slowing down aging of solid insulation of oil-paper insulating transformer |
| CN106527214A (en) * | 2015-09-14 | 2017-03-22 | 四方特变电工智能电气有限公司 | Dual-configuration method of intelligent electronic controller of transformer |
| CN106527214B (en) * | 2015-09-14 | 2019-02-01 | 四方特变电工智能电气有限公司 | Intelligent transformer type electronic controller duplicate system retrofit method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20160106 |