CN201278008Y - Transformer integrated monitor - Google Patents
Transformer integrated monitor Download PDFInfo
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- CN201278008Y CN201278008Y CNU2008201735471U CN200820173547U CN201278008Y CN 201278008 Y CN201278008 Y CN 201278008Y CN U2008201735471 U CNU2008201735471 U CN U2008201735471U CN 200820173547 U CN200820173547 U CN 200820173547U CN 201278008 Y CN201278008 Y CN 201278008Y
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- 238000012544 monitoring process Methods 0.000 claims abstract description 68
- 230000003993 interaction Effects 0.000 claims abstract description 31
- 230000006855 networking Effects 0.000 claims abstract description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 14
- 238000003786 synthesis reaction Methods 0.000 claims description 14
- 238000012545 processing Methods 0.000 abstract description 12
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 230000006870 function Effects 0.000 description 20
- 238000005516 engineering process Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 241001124569 Lycaenidae Species 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 235000019800 disodium phosphate Nutrition 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The utility model relates to a comprehensive monitoring instrument for a transformer, which is characterized in that the comprehensive monitoring instrument comprises three mutually independent DSP (Digital Signal Processing) modules, i.e. a temperature control DSP module, an electric quantity monitoring DSP module and a man-computer interaction DSP module which are connected through a RS232 serial bus. The utility model has the advantages of low cost due to the reduction of a monitoring hardware and the elimination of a telemechanical equipment module, convenient system networking and centralized monitoring of the transformer and safe and reliable operation.
Description
(1) technical field
The invention belongs to power transformer monitoring field, particularly a kind of synthesis monitoring instrument for transformer.
(2) background technology
Transformer control generally comprises the transformer monitoring temperature and the transformer electrical quantity is monitored two aspects, and the monitoring of transformer electrical quantity comprises parameter monitoring and electrical energy parameter monitoring such as voltage, electric current, frequency again.The transformer control function all was to be finished jointly by transformer electronic temperature control device, telemechanical apparatus (or other transformer electrical quantity harvesters) and electric energy meter (watt-hour meter) in the past.The transformer monitoring temperature comprises functions such as transformer temperature acquisition, processing, demonstration, overtemperature alarm, overtemperature tripping operation, the manual start and stop of cooling fan, the general pattern that adopts a transformer to be equipped with an electronic temperature control device of past; The monitoring of transformer electrical quantity comprises collection, the processing of electrical parameters such as transformer voltage, electric current, active power, reactive power, power factor, harmonic wave, frequency, isolating switch, disconnector, low pressure go out functions such as status surveillance such as wiretap, interconnection switch, load tap changer position and breaker closing, tripping operation control, generally adopt a transformer to be equipped with the pattern of a telemechanical apparatus (or other transformer electrical quantity harvesters) in the past; The general in the past pattern (see figure 1) that adopts a transformer to be equipped with an electric energy meter (watt-hour meter) of the collection of transformer active energy, reactive energy.
As can be seen from Figure 1, past to the monitoring of a transformer generally all be adopt electronic temperature control device, a telemechanical apparatus (or other transformer electrical quantity harvesters) and an electric energy meter (watt-hour meter) totally three kinds of hardware units finish jointly, hardware purchase and installation cost are all higher, and these three kinds devices all are by different manufacturer production generally, interface is disunity often, with the unusual trouble of their networkings, thereby be unfavorable for centralized and unified monitoring to transformer.
Electrical quantity such as voltage to transformer, electric current, the acquisition process of frequency etc., isolating switch, status surveillance such as interconnection switch and isolating switch breaker tripping and closing control etc. generally all were to adopt telemechanical apparatus to finish in the past, telemechanical apparatus is generally all formed (see figure 2) by a plurality of modules, as power module, the CPU module, analogue collection module, open into leaving module etc., a general module is exactly an independently circuit board, these modules (circuit board) all are to link together by nonstandard bus or some connectors, greatly reduce the reliability of total system, and cost is higher relatively.
(3) summary of the invention
The present invention provides the synthesis monitoring instrument for transformer that a kind of cost is low, the systems connection Centralized Monitoring convenient, reliability is high in order to remedy the deficiencies in the prior art.
The present invention is achieved through the following technical solutions:
Synthesis monitoring instrument for transformer of the present invention, its special character is: be made up of three separate DSP modules, be respectively temperature control DSP module, electric quantity monitoring DSP module and man-machine interaction DSP module, connect by the RS232 universal serial bus between the three.DSP is DigitalSignal Processing, digital signal processing.
Synthesis monitoring instrument for transformer of the present invention, temperature control DSP module and electric quantity monitoring DSP module is integrated is installed on the supervisory circuit plate, supervisory circuit plate also be provided with can with the RS485 universal serial bus and the CAN industrial field bus interface of background monitoring software networking.CAN is controller area network, the controller area network network.RS485 universal serial bus and CAN industrial field bus interface can be networked with background monitoring software easily, realize the Centralized Monitoring function of many transformers, can be widely used in the temperature control and the electrical parameter monitoring field of power transformer.
Synthesis monitoring instrument for transformer of the present invention, man-machine interaction DSP module is installed in the man-machine interaction plate, and operation keyboard and LCD also are installed on the man-machine interaction plate; The input end attended operation keyboard of man-machine interaction DSP module, output terminal connects LCD.
Synthesis monitoring instrument for transformer of the present invention, temperature control DSP module is finished the transformer temp monitoring function; Electric quantity monitoring DSP module is finished transformer electrical parameter and on off state monitoring and isolating switch control function; Man-machine interaction DSP module realizes the human-computer interaction function of transformer control.The input end of temperature control DSP module connects temperature sensor, and output terminal connects cooling fan.The input end of electric quantity monitoring DSP module connects the voltage transformer (VT) summation current transformer, and output terminal connects isolating switch, switch etc.Connect by the RS232 universal serial bus between temperature control DSP module and the electric quantity monitoring DSP module.
The invention has the beneficial effects as follows, because reduced monitoring hardware, removed the telemechanical apparatus module, so cost is very low, and systems connection, Centralized Monitoring transformer are convenient, safe and reliable to operation.
(4) description of drawings
Fig. 1 is a prior art for adopting the transformer control system schematic of electronic temperature control device, telemechanical apparatus and electric energy meter, and Fig. 2 is a transformer telemechanical apparatus system schematic, also is prior art, and Fig. 3 is a transformer control system schematic of the present invention.
(5) embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.
Synthesis monitoring instrument for transformer of the present invention is made up of three separate DSP modules, is respectively temperature control DSP module, electric quantity monitoring DSP module and man-machine interaction DSP module, connects by the RS232 universal serial bus between the three.Temperature control DSP module and electric quantity monitoring DSP module is integrated is installed on the supervisory circuit plate, supervisory circuit plate also be provided with can with the RS485 universal serial bus and the CAN industrial field bus interface of background monitoring software networking.Man-machine interaction DSP module is installed in the man-machine interaction plate, and operation keyboard and LCD also are installed on the man-machine interaction plate; The input end attended operation keyboard of man-machine interaction DSP module, output terminal connects LCD.
Synthesis monitoring instrument for transformer of the present invention, temperature control DSP module is finished the transformer temp monitoring function; Electric quantity monitoring DSP module is finished transformer electrical parameter and on off state monitoring and isolating switch control function; Man-machine interaction DSP module realizes the human-computer interaction function of transformer control.The input end of temperature control DSP module connects temperature sensor, and output terminal connects cooling fan.The input end of electric quantity monitoring DSP module connects the voltage transformer (VT) summation current transformer, and output terminal connects isolating switch, switch etc.Connect by the RS232 universal serial bus between temperature control DSP module and the electric quantity monitoring DSP module, without any need for connector, improved the reliability and maintainability of total system, and effectively reduced hardware cost.
Synthesis monitoring instrument for transformer of the present invention is linked to be localized network based on many DSP parallel processing, each DSP disposal system independent operating and by the RS232 universal serial bus.Synthesis monitoring instrument for transformer by man-machine interaction plate and supervisory circuit plate totally two circuit boards form.Wherein the supervisory circuit plate is made up of temperature control DSP module and electric quantity monitoring DSP module, integrated transformer monitoring temperature, transformer electrical parameter and functions such as on off state monitoring and isolating switch control, software and hardware all adopts modular design, is convenient to installation, maintenance and system extension.Connect and compose a unified localized network by the RS232 universal serial bus between the temperature of independent operating control DSP module, electric quantity monitoring DSP module and the man-machine interaction DSP module three separately, realize the structure and the function modoularization of transformer control, be easy to expansion and maintenance.Task coordinate and message exchange between three DSP modules are finished in monitor inside, and the required full detail of transformer Centralized Monitoring is by RS485 or the unified output of CAN bus, and the network that greatly facilitates the transformer Centralized Monitoring is realized.
The present invention at first adopts three tasks such as monitoring of dsp system parallel processing transformer monitoring temperature, transformer electrical parameter and on off state and isolating switch control, man-machine interaction independently separately, be linked to be a unified localized network by the RS232 universal serial bus between the DSP disposal system of each independent operating, realize the purpose of transformer safe and reliable operation.Secondly, the present invention realizes that with the function of power transformer electronic temperature control device, remote terminal unit, electric energy meter circuit is integrated on the supervisory circuit plate, compact conformation, be convenient to installation and maintenance, under the situation that monitor man-machine interaction plate breaks down, the supervisory circuit plate still can independent operating, has improved the reliability of whole monitor when reducing cost.
Technology such as the present invention incorporated digital signal processing (DSP) technology, intelligent sensing technology, intelligent control technology, localized network technology, disturb isolation technology and control in real time, fault-tolerant, automatic trouble diagnosis have improved the processing capability in real time and the antijamming capability under abominable electromagnetic environment of monitor greatly.
The difference of the present invention and system shown in Figure 1 is:
The present invention adopts the transformer temperature to control the DSP module and finishes functions such as collection, processing, overtemperature alarm, overtemperature tripping operation, maximum temperature record, power down thermograph and the blower fan of transformer three-phase temperature (or oil temperature) and environment temperature regularly start, and just finishes the function of transformer electronic temperature control device among Fig. 1; Adopt transformer electric quantity monitoring DSP module to finish collection, the processing of electrical parameters such as transformer voltage, electric current, active power, reactive power, active energy, reactive energy, power factor, harmonic wave, frequency, isolating switch, disconnector, low pressure go out functions such as status surveillances such as wiretap, interconnection switch, load tap changer position and breaker closing, tripping operation control, just finish the function of telemechanical apparatus among Fig. 1 (or electrical quantity harvester) and electric energy meter (watt-hour meter).Link together by the RS232 universal serial bus between transformer temperature control DSP module and the transformer electric quantity monitoring DSP module, task coordinate and message exchange between two DSP modules are finished in monitor inside, the required full detail of transformer Centralized Monitoring is exported by RS485 or the unification of CAN bus, thereby has overcome the defective of networking difficulty between each equipment of system shown in Figure 1 effectively.
The difference of the present invention and system shown in Figure 2 is:
Transformer temperature control DSP module and transformer electric quantity monitoring DSP module are on the same circuit board among the present invention, provide cost savings, and the connection between two DSP modules is without any need for connector, improve the reliability of total system greatly, overcome the defective of system shown in Figure 2 cost height, poor reliability effectively.
The present invention's (Fig. 3) concrete principle of work:
1. transformer temperature control DSP module 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, and environment temperature, the data that collect are carried out processing such as gamma correction through A/D (mould/number) conversion back by DSP, the data of handling well are delivered to man-machine interaction DSP module by the RS232 universal serial bus and are shown, can be sent to background monitoring software by RS485 or CAN bus simultaneously.When temperature surpasses user's value of setting, carry out warning such as overtemperature alarm, overtemperature tripping operation and the transformer cooling fan is carried out associative operation, temperature control DSP module 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.
2. transformer electric quantity monitoring DSP module is gathered the three-phase voltage and the three-phase current simulated data of transformer by the voltage transformer (VT) summation current transformer, through high-precision A/the D conversion chip converts digital signal to after internal bus is sent into DSP, DSP is through difference calculating transformer voltage after the relevant treatment, electric current, active power, reactive power, active energy, reactive energy, power factor, harmonic wave, electrical parameters such as frequency, the electrical parameter of handling well is delivered to man-machine interaction DSP module by the RS232 universal serial bus and is shown, can be sent to background monitoring software by RS485 or CAN bus simultaneously.Electric quantity monitoring DSP module also finish isolating switch, disconnector, low pressure gone out status surveillances such as wiretap, interconnection switch, load tap changer position and to isolating switch close a floodgate, operation such as tripping operation.
3. the man-machine interaction DSP module definite values such as transformer alarm temperature that receive user's input from operation keyboard are provided with the orders such as manual start-stop of parameter and transformer cooling fan, isolating switch, be sent to temperature control DSP module and electric quantity monitoring DSP module respectively by the RS232 universal serial bus, carry out relevant definite value parameter setting and cooling fan, isolating switch are carried out associative operation with electric quantity monitoring DSP module by temperature control DSP module.In addition, man-machine interaction DSP module realizes the demonstration of information such as transformer running status, warning by the demonstration of LCD realization transformer temperature, electrical parameter, each on off state, tap joint position etc. by the LED light emitting diode.
The TMS320LF2407A that the CPU of temperature control DSP module and man-machine interaction DSP module all adopts TI (Texas Instrument) company to produce among the present invention (Fig. 3), it is the 16 bit DSP chips of using at the control field specially, having high speed signal handles and the necessary architecture of digital control function, its instruction execution speed is up to 40MIPS, and the instruction of the overwhelming majority can be finished in the monocycle of a 25ns.In addition, it also has I/O (I/O) port and other peripherals in the very powerful sheet, has simplified temperature control DSP module and man-machine interaction DSP module periphery circuit design, has reduced system cost.TMS320LF2407A integrates program storage, data-carrier store, CAN communication controler, it is little to make temperature control DSP module and man-machine interaction DSP module have a volume, the characteristics that antijamming capability is strong, but long-term work waits the temperature environment of strong electromagnetic interference environment and-45～+ 80 ℃ in transformer case.
The CPU of electric quantity monitoring DSP module adopts the TMS320LF2812A that TI company produces among the present invention (Fig. 3); it is 32 multiple functional bit DSPs; have the performance up to 150MIPS, its function comprises that bus on monocycle 32*32MAC, the many silvers, single protection path, one-cycle instruction are carried out, powerful addressing mode, shift unit and integrated real-time simulation.Built-in big internal memory and integrated Peripheral Interface on the TMS320LF2812A sheet, it is little make to adopt the electric quantity monitoring DSP module of this dsp chip design have a volume, reliability height, characteristics such as antijamming capability is strong.
Electric quantity monitoring DSP module adopts 14 precision A/D conversion chips, utilize the good operational performance of TMS320LF2812A, software has adopted fast fourier transform, voltage transformer (VT), current transformer angular difference calibration scheduling algorithm, transformer voltage, electric current, active power, reactive power, power factor, harmonic wave, the collection computational accuracy of electrical parameters such as frequency has reached 0.5%, and isolating switch, disconnector, low pressure goes out wiretap, interconnection switch, state renewal speed and breaker closings such as load tap changer position, operating speeds such as tripping operation have all had significant raising than the telemechanical apparatus that adopts single-chip microcomputer.
Claims (3)
1. a synthesis monitoring instrument for transformer is characterized in that: be made up of three separate DSP modules, be respectively temperature control DSP module, electric quantity monitoring DSP module and man-machine interaction DSP module, connect by the RS232 universal serial bus between the three.
2. synthesis monitoring instrument for transformer according to claim 1, it is characterized in that: temperature control DSP module and electric quantity monitoring DSP module is integrated is installed on the supervisory circuit plate, supervisory circuit plate also be provided with can with the RS485 universal serial bus and the CAN industrial field bus interface of background monitoring software networking.
3. synthesis monitoring instrument for transformer according to claim 1 and 2 is characterized in that: man-machine interaction DSP module is installed in the man-machine interaction plate, and operation keyboard and LCD also are installed on the man-machine interaction plate; The input end attended operation keyboard of man-machine interaction DSP module, output terminal connects LCD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201735471U CN201278008Y (en) | 2008-10-23 | 2008-10-23 | Transformer integrated monitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201735471U CN201278008Y (en) | 2008-10-23 | 2008-10-23 | Transformer integrated monitor |
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| CN201278008Y true CN201278008Y (en) | 2009-07-22 |
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| CNU2008201735471U Expired - Fee Related CN201278008Y (en) | 2008-10-23 | 2008-10-23 | Transformer integrated monitor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280853A (en) * | 2010-06-11 | 2011-12-14 | 陈家斌 | Intelligent overcurrent phase-failure protector of distribution transformer |
| CN102290786A (en) * | 2010-06-18 | 2011-12-21 | 陈家斌 | Temperature monitoring intelligent device for distribution transformer |
| CN102593792A (en) * | 2012-03-02 | 2012-07-18 | 常州特种变压器有限公司 | Built-in circuit breaker for oil-immersed transformer |
| CN103455061A (en) * | 2013-09-04 | 2013-12-18 | 顺特电气设备有限公司 | Temperature control device for dry transformer and operation method thereof |
| CN104251749A (en) * | 2014-08-28 | 2014-12-31 | 广东狮能电气股份有限公司 | On-line monitoring system for oil temperature of transformer |
-
2008
- 2008-10-23 CN CNU2008201735471U patent/CN201278008Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280853A (en) * | 2010-06-11 | 2011-12-14 | 陈家斌 | Intelligent overcurrent phase-failure protector of distribution transformer |
| CN102290786A (en) * | 2010-06-18 | 2011-12-21 | 陈家斌 | Temperature monitoring intelligent device for distribution transformer |
| CN102593792A (en) * | 2012-03-02 | 2012-07-18 | 常州特种变压器有限公司 | Built-in circuit breaker for oil-immersed transformer |
| CN103455061A (en) * | 2013-09-04 | 2013-12-18 | 顺特电气设备有限公司 | Temperature control device for dry transformer and operation method thereof |
| CN103455061B (en) * | 2013-09-04 | 2016-08-31 | 顺特电气设备有限公司 | Temperature control device for dry transformer and method of operating thereof |
| CN104251749A (en) * | 2014-08-28 | 2014-12-31 | 广东狮能电气股份有限公司 | On-line monitoring system for oil temperature of transformer |
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Granted publication date: 20090722 Termination date: 20121023 |