CN1632996A - An intelligent transformer operating and controlling device and its use - Google Patents
An intelligent transformer operating and controlling device and its use Download PDFInfo
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- CN1632996A CN1632996A CN 200410077495 CN200410077495A CN1632996A CN 1632996 A CN1632996 A CN 1632996A CN 200410077495 CN200410077495 CN 200410077495 CN 200410077495 A CN200410077495 A CN 200410077495A CN 1632996 A CN1632996 A CN 1632996A
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Abstract
This invention relates to a transformer intelligent operation device and its usage characterizing comprising a parameter collection circuit, site test circuit, a process control circuit, a display and alarm circuit, a communication circuit, a protection circuit a storage circuit and a power supply circuit, in which, the output ends of the collection circuit and the site test circuit are connected with the input end of the control circuit, input ends of the display and alarm circuit, communication circuit and protection circuit are connected with the output end of the control circuit, output end of the communication can transmit signals via wire or wireless networks, the control ends of the load control switch or accessories of the transformer.
Description
Technical field
The present invention relates to a kind of intelligent transformer operating and controlling device and uses thereof, be applicable to monitoring American box type transformer, dry-type transformer and box-type substation running status.Belong to the transformer control equipment technical field.
Background technology
At present, the transformer that uses in the electric power system has dry-type transformer, combined transformer and American box transformer.American box transformer more and more is widely used.Because around the transformer all is the higher-pressure region, there is certain danger, therefore, transformer generally is installed in the place of living away from the resident, before transformer breaks down, can not understand its internal work state and configuration state, and prior art is very backward to the monitoring means of transformer running status.In case the generation transformer fault just must bring and stop power supply, this will bring loss to worker, agricultural production again.Therefore, monitoring the means of transformer operating state in real time, transformer is examined in advance, is to overcome transformer fault to bring one of necessary means of harm.
Summary of the invention
The technical issues that need to address of the present invention, purpose promptly of the present invention is for a kind of intelligent transformer operating and controlling device being provided, can advancing to monitor temperature, pressure changing condition and the open-phase protection of transformer by wireless or wire communication network implementation.
Technical problem of the present invention can solve by taking following measure:
The comprehensive actuation means of a kind of intelligent transformer, its design feature is: by the electric parameter Acquisition Circuit, on-the-spot testing circuit, control and treatment circuit, show and warning circuit, communicating circuit, protective circuit, memory circuit and power circuit are formed by connecting, the output of electric parameter Acquisition Circuit, the output of on-the-spot testing circuit is an input of connection processing control circuit respectively, show and warning circuit, communicating circuit, the input of protective circuit is an output of connection processing control circuit respectively, the output of communicating circuit can pass through RS485, wired Moden, wireless GSM, or wireless GPRS externally sends communication signal, the control end of the output connected load control switch of protective circuit or the control end of transformer auxiliary equipment; Control and treatment circuit is finished following work:
1) analyzes electric parameters such as the voltage, electric current of electric parameter Acquisition Circuit input, meritorious, idle, frequency or phase angle power factor, determine the real-time loading condition of transformer, calculate real-time theoretical temperature rise and send the memory circuit preservation;
2) analyze temperature or the pressure that on-the-spot testing circuit is imported, judge whether transformer oil temperature rise or pressure is unusual, send alarm signal or disconnect on-load switch to the user by Display and Alarm Circuit by protective circuit if having unusually promptly; Analyze the power factor of on-the-spot testing circuit input, judge the situation whether transformer has internal breakdown or other to cause power factor to reduce, if have promptly and send alarm signal to the user, send memory circuit to preserve detection case and analysis result by Display and Alarm Circuit.
Technical problem of the present invention also can solve by taking following measure:
On-the-spot testing circuit comprises the warm detector of transformer body oil, transformer operating ambient temperature detector, transformer oil pressure detector, transformer oil pressure critical pressure detector, transformer oil pressure limiting pressure detector, transformer phase loss detector and transformer I/O power percentage testing circuit, and the warm detector of transformer body oil, transformer operating ambient temperature detector and transformer oil pressure detector are analog quantity detector, their input of output by A/D converter connection processing control circuit; Transformer oil pressure critical pressure detector, transformer oil pressure limiting pressure detector and transformer phase loss detector are switching value detector, their input of each connection processing control circuit of output; The control end of the output connected load control switch of protective circuit.
On-the-spot testing circuit comprises Temperature Detector, moisture detector and transformer I/O power percentage detector, and the output of Temperature Detector, moisture detector is by the input of A/D converter connection processing control circuit; Transformer I/O power percentage detector detects the input power and the power output of transformer respectively, calculates the input of delivering to control and treatment circuit behind the percentage; Protective circuit comprises abnormality processor and controller of fan, and the output of abnormality processor connects the control end of abnormality processing equipment, and the output of controller of fan connects the control end of transformer blower fan.
The purposes of the comprehensive actuation means of foregoing a kind of intelligent transformer is characterized in:
The comprehensive actuation means of intelligent transformer is installed in combined transformer or the change of American case an input of the high voltage end of the input connection transformer of electric parameter Acquisition Circuit or low-voltage end, output connection processing control circuit; The warm detector of transformer body oil of on-the-spot testing circuit, transformer operating ambient temperature detector detect the oily temperature of transformer and the ambient temperature of transformer respectively, transformer oil pressure detector, transformer oil pressure critical pressure detector, transformer oil pressure limiting pressure detector detect oil pressure, critical pressure and the limiting pressure of transformer respectively, the transformer phase loss detector detects the running status of each phase, and transformer I/O power percentage testing circuit detects the I/O power of transformer; The control end of the output connected load control switch of protective circuit; By oil temperature, ambient temperature, oil pressure and each the phase signal of telecommunication in the measuring transformer, the overall operation situation of monitoring transformer, when oily temperature rise, oil pressure or phase shortage in the transformer are unusual, the on-load switch of transformer is carried out disjunction and reports to the police, abnormality is uploaded user side.
The comprehensive actuation means of intelligent transformer is installed in dry-type transformer or the box-type substation input of the high voltage end of the input of electric parameter Acquisition Circuit connection transformer or low-voltage end, output connection processing control circuit; The Temperature Detector of on-the-spot testing circuit, the temperature and humidity that moisture detector detects transformer respectively; Transformer I/O power percentage detector detects the input power and the power output of transformer respectively, calculates the input of delivering to control and treatment circuit behind the percentage; The output of the abnormality processor of protective circuit connects the control end of abnormality processing equipment, and the output of controller of fan connects the control end of transformer blower fan; By measuring winding temperature and each the phase electric parameter signal in the dry-type transformer, the overall operation situation that the monitoring dry type becomes, when temperature, voltage or electric current in the dry-type transformer, power, frequency, when power factor is unusual, on-load switch to transformer carries out disjunction and warning, and abnormality is uploaded user side.
The present invention has following outstanding effect:
1, realizes digitlization, the intellectuality, integrated, networked of terminal equipment.
Because the present invention includes scene temperature controller, switching value input and output detection, open-phase protection, GSM communication module etc.; adopt the DSP engine of high-speed sampling to carry out data processing and data storing, therefore can realize digitlization, intellectuality, integrated, networked, integrated.
1) digitlization: the main body operating temperature of transformer, ambient temperature and main body operating pressure all calculate the back by sampling and provide with the form of digital quantity, have intuitive and accurate characteristics, and can data remote, for distant place control and regulate the data basis is provided.
2) intellectuality: all on-the-spot parameters are saved among the EEPROM after setting, and have the power-failure memory function, and are convenient, accurate, reliable, replace traditional potentiometer set-up function.System has fault self-diagnosis function and energy teletransmission.By the split intellectuality of the traditional multimode of incorporate intelligent RTU replacement, be convenient to be embedded into original using electricity system, cheap, the reliability height.
3) networking: communication media and stipulations variation, have RS232/RS485, wired MODEM, communication interfaces such as wireless GSM, GPRS are arranged again, terminal can take remote measurement by the INTERNET network, remote signalling, remote control, remote regulating.Support international open bus network communications protocol such as MODBUS, PROFIBUS, have very strong opening, be convenient to set up the using electricity automation network, again can with traditional power utilization network compatibility.
4) integrated: the structural design compactness, functions such as temperature and pressure data collection, switching value input and output detection, open-phase protection, distant communication are integrated in an intelligent RTU and finish, and are convenient to installation and maintenance, significantly reduce secondary connection.Automatically operate by intelligent RTU, realize the automation of system, have very strong downward compatibility, be convenient to carry out networking, be convenient to transform, reduce operating cost with original system.
2, gsm wireless networking technology, the real-time monitoring technique of GPRS data flow, the multistation administrative skill outside the external communication of employing RS485/RS422 bus mode utilizes network to carry out telecommunication administration, can arrive anywhere, and confidentiality is extremely strong.Monitoring is an one with protection, meets the designing requirement of transformer unattended duty and cramped construction.Integration unit has been realized concentrated monitoring, the protection of transformer, forms real unattended core, constitutes intelligent transformer station.
1) in transformer, introduces the notion of temperature, pressure detecting and open-phase protection, first, improve the reliability of transformer effectively, greatly prolong transformer's life span, help the marketing of transformer by above measure.
2), employing dsp chip at a high speed carries out data acquisition, reliability, accuracy and the real-time of assurance data.
3), the sampling basic principle of data is ∑/Δ multiple integral and Fourier transform, the collection result of DC quantity has the higher linearity.
4), adopt eeprom chip to carry out that data record can be preserved one day historical data and warning in slave computer, malfunction confession user receives inquiry by host computer in good time.
5), the exchanges data means of upper and lower machine not only have traditional RS485, wired MODEM communication modes, also have advanced communication modes such as wireless GSM short message, GPRS data flow mode.
3, structure uniqueness of the present invention, main surface are aspect following three: the 1) detection of temperature, oil pressure and control and open-phase protection independence separately, avoid the interference of open-phase protection to the detection of temperature, oil pressure, and this measure improves the reliability of system greatly.2) casing adopts metal shell, can anti-preferably electromagnetic interference, can dispel the heat preferably, anti-vibration preferably, solved the destruction problem that long-distance transportation brings casing.3) casing adopts damascene structures, is convenient to the on-the-spot wiring of installing, and saves installing space, and is installed in the case variant, keeps original case change the appearance appearance and compact structure.Monitoring is one with protection, meets the designing requirement that American case becomes Europe unattended duty and cramped construction.
4, can utilize GSM or GPRS distribution to carry out cluster management and control, can monitor a plurality of transformers or a plurality of transformer group in real time simultaneously, have following characteristics in same place:
1) network architecture is easily installed simple, convenient;
2) have functional network topology, system extension is convenient and expense is cheap;
3) have the accident analysis function, the analysis of failure class adds and fault section automatically, and can handle automatically with control and cut accent, effectively dwindles the fault outage scope;
4) upper system can use GRRS (or GSM) to the time, whole system has the clock synchronizing function;
5) the configurable distribution geographic information management system of upper system GIS;
6) cost performance is excellent, owing to make full use of the public resource of national mobile communication, compares the system price that greatly reduces distribution automation with the dedicated optical fibre web;
7) main software of system is installed in China Mobile and nets on the Web server in direct source, has improved the reliability and the operating rate of system greatly;
8) thin-client: the configuration of teller work station can significantly reduce, and surfs the Net in the mode of IE browser and monitors, and does not need onlinely for a long time, can receive the back online monitoring of reporting to the police, and limit to no region
9) control and important electric parameter can pass through the mutually direct Data transmission of GPRS (or GSM) mobile communication automatically, have improved communication speed and reliability greatly
10) system's operation and easy to maintenance.Anywhere, any way online all can be carried out Operation, Administration and Maintenance.
Description of drawings
Fig. 1 is a structured flowchart of the present invention.
Fig. 2 is the structured flowchart of the concrete application example 1 of the present invention.
Fig. 3 is the structured flowchart of the concrete application example 2 of the present invention.
Fig. 4 is display circuit of the present invention, keyboard scanning circuit electrical schematic diagram.
Fig. 5 is the electrical schematic diagram of A/D change-over circuit of the present invention, testing circuit, memory circuit and communicating circuit.
Fig. 6 is the electrical schematic diagram of lack detection circuit of the present invention.
Fig. 7 is the gas schematic diagram of protective circuit of the present invention, power circuit and switching value testing circuit electricity.
Fig. 8 is that open-phase protection of the present invention selects the circuitry phase electrical schematic diagram.
Fig. 9 uses schematic network structure of the present invention.
Embodiment
Below in conjunction with specific embodiment the present invention is specifically described.
Specific embodiment 1:
Fig. 1, Fig. 2, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8 constitute embodiments of the invention 1.
As can be seen from Figure 1, present embodiment 1 is formed by connecting by electric parameter Acquisition Circuit 1, on-the-spot testing circuit 2, control and treatment circuit 3, demonstration and warning circuit 4, communicating circuit 5, protective circuit 6, memory circuit 7 and power circuit 8.As can be seen from Figure 2, on-the-spot testing circuit 2 comprises the warm detector 21 of transformer body oil, transformer operating ambient temperature detector 22, transformer oil pressure detector 23, transformer oil pressure critical pressure detector 24, transformer oil pressure limiting pressure detector 25, transformer phase loss detector 26 and transformer I/O power percentage testing circuit 27, the warm detector 21 of transformer body oil, transformer operating ambient temperature detector 22 and transformer oil pressure detector 23 are the analog quantity detector, their output is by the input of A/D converter 28 connection processing control circuits 3; Transformer oil pressure critical pressure detector 24, transformer oil pressure limiting pressure detector 25 and transformer phase loss detector 26 are switching value detector, their input of each connection processing control circuit 3 of output; The control end of the output connected load control switch of protective circuit 6.
As can be seen from Figure 4, demonstration and warning circuit 4 comprise display part and keyboard scan part; The display part is formed by connecting by decoder chip 74LS154, serial chip 74LS164 and LED display chip; The keyboard scan part selects chip, several triodes and button to be formed by connecting by sheet.This part drives decoder 74LS154 work by CPU (89C55WD), selects signal by 74LS154 as the position that LED shows, after CPU drives the position and selects signal, gives the display segment code of this LED by serial chip 74LS164, the operation principle of Here it is display circuit.Keyboard scan is to utilize interrupt generator, and CPU reads key assignments in processes and displays, is aided with reset circuit again, and this has just constituted the hardware components of the man-machine interface of intelligent transformer operating and controlling device.
Fig. 5 comprises analog quantity A/D conversion, switching value detection, E2PROM storage, clock generator and wireless communication module.Wherein
A partly is an analog quantity A/D conversion work principle.Analog quantity comprises: transformer I/O power electrical signal detection, input A/D modular converter inputs to CPU89C55WD with digital quantity behind the A/D modular converter after signal shift switch switches.Oil temperature, ambient temperature and oil pressure detect.Oil temperature and ambient temperature are converted to the analog DC voltage signal after the Pt100 sensor, oil pressure is converted to the analog DC signal after pressure transmitter detects.Input A/D modular converter after switch switches chip 4051 is converted to digital quantity input CPU by the A/D modular converter again.
B partly is a switching value importation schematic diagram.This part needs to combine with the schematic diagram of Fig. 7, and behind the anti-phase drive circuit input CPU of switching value through the B part that isolates, CPU can detect the operating state of respective point.Wherein whether PASA, PASB, PASC detect transformer and exist phase shortage to report to the police, and Kin1, Kin2 detect transformer oil pressure whether overstep the extreme limit pressure or critical pressure.
C partly is the control processing circuit 3 of intelligent transformer operating and controlling device.This circuit adopts single-chip microcomputer 89C55WD to finish signal processing and functions such as control, demonstration, communication, data transmission and memory.
D partly is the module of dual serial mode work.E2PROM memory 24LC08 for band write-protect function is used for remembering historical data and single-chip microcomputer calculating process and needs the data deposited.Clock chip SD2000 is used to produce the used time of data memory for the inner serial clock chip that carries lithium battery.
E partly is a communication module, and this module can be in different ways.This figure is GSM communication for example only, can also adopt RS485, RS422, RS232 wire communication (comprising MODEM mode wire communication) in addition, can also adopt the GPRS wireless communication mode.
Fig. 6 is a lack detection circuit.Workflow is: rectification after the instrument transformer conversion, filtering in the transformer voltage signal input apparatus are amplified through amplifier again, compare with a magnitude of voltage, in the external voltage input value is lower than table during magnitude of voltage, be judged to be phase shortage through hardware after relatively, can make corresponding disposal by CPU at this moment.
Fig. 7 comprises external control signal output, power module, switching value input, and wherein A partly is the relay control output schematic diagram that is driven by Fig. 5 partial C PU.This part is earlier through after the light-coupled isolation, and through the cloudy time-delay output control relay that holds, the relay node signal provides functions such as oily temperature overtemperature alarm, the critical warning of pressure, pressure limit warning again.
B partly is a power module.Power supply imports after Switching Power Supply produces VCC-GND ,+9V-AGND, and+24V-G24, several groups of power supplys of+10V-GBB use for the intelligent transformer operating and controlling device disparate modules.C partly is the switching value input signal.Switching value is imported CPU and is used to detect the oil pressure state after isolating.
Fig. 8 partly is used in combination with Fig. 6.In Fig. 6 partly carries out transformer voltage signal and intelligent actuation means a certain adjustable fixed voltage value relatively after, through after a series of hardware logic computing, the level signal of generation is through isolating the corresponding open-phase protection relay node output of rear drive.
The operation principle of present embodiment is as follows:
1, the comprehensive actuation means of intelligent transformer is installed in the combined transformer (American case change).Gather the signal of telecommunication (voltage, current signal) of the high or low pressure side of transformer in real time, collection calculates electric parameters such as voltage, electric current, meritorious, idle, frequency, phase angle power factor, determine the real-time loading condition of transformer then, calculate the theoretical temperature rise of its this moment; Draw real-time oily temperature rise by detection of oil temperature and ambient temperature detection, relatively actual oil temperature rises and theoretical oily temperature rise then, judges whether oily temperature rise is unusual, sends alarm signal or sends trip signal disjunction high voltage oil immersion on-load switch to user side to the user.In addition:
When oily temperature rise reached critical, CPU sent alarm signal by communicating circuit 5 to user side.
When oily temperature rise reached capacity oily temperature rise, CPU sent trip signal disjunction high voltage oil immersion on-load switch by protective circuit 6 to user side.
2, CPU becomes the switching value signal of oil pressure by the testing circuit detection case
When oil pressure reaches critical pressure, send alarm signal to user side.
When oil pressure reaches capacity pressure, send trip signal disjunction high voltage oil immersion on-load switch to user side.
3, phase shortage detects
When a certain phase shortage or the voltage of taking place mutually when on the low side, the disjunction load control switch.
Simultaneously, when in above three during a certain the generation by communicating circuit 5, the abnormality that the notice user transformers occurs is so that send someone near on-site maintenance.
4, the transformer efficiency factor detects
Transformer is when operate as normal, its input power and power output are to change in certain percentage range, when transformer fe core insulation and winding insulation are impaired, because internal loss is bigger, cause I/O power percentage to exceed normal range (NR), device can be detected the possibility whether transformer has internal breakdown in advance by detecting this percentage, can make the client that transformer is effectively safeguarded by reporting to the police in advance.By above measure, make corresponding safeguard measure thereby can understand the operating state of transformer effectively and can understand in real time to the abnormality of transformer, can reduce the failure rate that case becomes and prolong the useful life that case becomes.
Specific embodiment 2:
Fig. 1, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8 constitute embodiments of the invention 2.
As can be seen from Figure 3, the characteristics of present embodiment are: on-the-spot testing circuit 2 comprises Temperature Detector 29, moisture detector 30 and transformer I/O power percentage detector 31, and the output of Temperature Detector 29, moisture detector 30 is by the input of A/D converter 32 connection processing control circuits 3; Transformer I/O power percentage detector 31 detects the input power and the power output of transformer respectively, calculates the input of delivering to control and treatment circuit 3 behind the percentage; Protective circuit 6 comprises abnormality processor 61 and controller of fan 62, and the output of abnormality processor 61 connects the control end of abnormality processing equipment, and the output of controller of fan 63 connects the control end of transformer blower fan.
Described Temperature Detector 29, moisture detector 30 and transformer I/O power percentage detector 31 adopt correlation detector commonly used, A/D converter 32 mainly is made of A/D conversion chip commonly used, and abnormality processor 61 and controller of fan 62 are made of control circuit commonly used respectively.
Present embodiment is applied in dry-type transformer or the box-type substation, and its operation principle is:
1) signal of telecommunication (voltage, current signal) of the high or low pressure side of collection transformer, collection calculates electric parameters such as voltage, electric current, meritorious, idle, frequency, phase angle power factor, when a certain parameter exceeds user's set point, send warning message to the user, make the user correct understanding be arranged presence states.
2) the winding temperature signal of collection transformer, starting fan is with cooling when the winding temperature is higher than user's set point in the transformer, and when the transformer winding temperature value of overstepping the extreme limit, device will send overtemperature trip signal and disjunction transformer load switch.
3) detect transformer I/O power percentage, whether the monitoring transformer has the abnormality that internal breakdown takes place and reports to the police.
4) above abnormality device all can be to the user go out warning message.
The present invention is an incorporate embedded equipment.It can be installed on the inside of electric products such as combined transformer (American case change), dry-type transformer, box-type substation, or the transformer body.By various operational factor in the measuring transformer electric product, running status to the transformer electric product is monitored in real time, when the tested electric product running status of transformer is unusual, sends warning message and make corresponding troubleshooting control to the user.
Claims (5)
1, the comprehensive actuation means of a kind of intelligent transformer, it is characterized in that: by electric parameter Acquisition Circuit (1), on-the-spot testing circuit (2), control and treatment circuit (3), show and warning circuit (4), communicating circuit (5), protective circuit (6), memory circuit (7) and power circuit (8) are formed by connecting, the output of electric parameter Acquisition Circuit (1), the output of on-the-spot testing circuit (2) is an input of connection processing control circuit (3) respectively, show and warning circuit (4), communicating circuit (5), the input of protective circuit (6) is an output of connection processing control circuit (3) respectively, the output of communicating circuit (5) can pass through RS485, wired Moden, wireless GSM, or wireless GPRS externally sends communication signal, the control end of the output connected load control switch of protective circuit (6) or the control end of transformer auxiliary equipment; Control and treatment circuit (3) is finished following work:
1) analyzes electric parameters such as the voltage, electric current of electric parameter Acquisition Circuit 1 input, meritorious, idle, frequency or phase angle power factor, determine the real-time loading condition of transformer, calculate real-time theoretical temperature rise to send memory circuit 7 preservations;
2) analyze temperature or the pressure that on-the-spot testing circuit 2 is imported, judge whether transformer oil temperature rise or pressure is unusual, send alarm signal or disconnect on-load switches to the user by Display and Alarm Circuit 4 by protective circuit 6 if having unusually promptly; Analyze the power factor of on-the-spot testing circuit 2 inputs, judge the situation whether transformer has internal breakdown or other to cause power factor to reduce, send alarm signal if having promptly to the user, send memory circuit 7 to preserve detection case and analysis result by Display and Alarm Circuit 4.
2, the comprehensive actuation means of a kind of intelligent transformer according to claim 1, it is characterized in that: on-the-spot testing circuit (2) comprises transformer body oil warm detector (21), transformer operating ambient temperature detector (22), transformer oil pressure detector (23), transformer oil pressure critical pressure detector (24), transformer oil pressure limiting pressure detector (25), transformer phase loss detector (26) and transformer I/O power percentage testing circuit (27), transformer body oil warm detector (21), transformer operating ambient temperature detector (22) and transformer oil pressure detector (23) are the analog quantity detector, their output is by the input of A/D converter (28) connection processing control circuit (3); Transformer oil pressure critical pressure detector (24), transformer oil pressure limiting pressure detector (25) and transformer phase loss detector (26) are switching value detector, their input of each connection processing control circuit (3) of output; The control end of the output connected load control switch of protective circuit (6).
3, the comprehensive actuation means of a kind of intelligent transformer according to claim 1, it is characterized in that: on-the-spot testing circuit (2) comprises Temperature Detector (29), moisture detector (30) and transformer I/O power percentage detector (31), and the output of Temperature Detector (29), moisture detector (30) is by the input of A/D converter (32) connection processing control circuit (3); Transformer I/O power percentage detector (31) detects the input power and the power output of transformer respectively, calculates the input of delivering to control and treatment circuit (3) behind the percentage; Protective circuit (6) comprises abnormality processor (61) and controller of fan (62), and the output of abnormality processor (61) connects the control end of abnormality processing equipment, and the output of controller of fan (63) connects the control end of transformer blower fan.
4, the purposes of the comprehensive actuation means of a kind of intelligent transformer as claimed in claim 1, it is characterized in that: the comprehensive actuation means of intelligent transformer is installed in combined transformer or the change of American case an input of the high voltage end of the input connection transformer of electric parameter Acquisition Circuit (1) or low-voltage end, output connection processing control circuit (3); The transformer body oil warm detector (21) of on-the-spot testing circuit (2), transformer operating ambient temperature detector (22) detect the oily temperature of transformer and the ambient temperature of transformer respectively, transformer oil pressure detector (23), transformer oil pressure critical pressure detector (24), transformer oil pressure limiting pressure detector (25) detect oil pressure, critical pressure and the limiting pressure of transformer respectively, transformer phase loss detector (26) detects the running status of each phase, and transformer I/O power percentage testing circuit (27) detects the I/O power of transformer; The control end of the output connected load control switch of protective circuit (6); By oil temperature, ambient temperature, oil pressure and each the phase signal of telecommunication in the measuring transformer, the overall operation situation of monitoring transformer, when oily temperature rise, oil pressure or phase shortage in the transformer are unusual, the on-load switch of transformer is carried out disjunction and reports to the police, abnormality is uploaded user side.
5, the purposes of the comprehensive actuation means of a kind of intelligent transformer as claimed in claim 1, it is characterized in that: the comprehensive actuation means of intelligent transformer is installed in dry-type transformer or the box-type substation input of the high voltage end of the input connection transformer of electric parameter Acquisition Circuit (1) or low-voltage end, output connection processing control circuit (3); The Temperature Detector (29) of on-the-spot testing circuit (2), the temperature and humidity that moisture detector (30) detects transformer respectively; Transformer I/O power percentage detector (31) detects the input power and the power output of transformer respectively, calculates the input of delivering to control and treatment circuit (3) behind the percentage; The output of the abnormality processor (61) of protective circuit (6) connects the control end of abnormality processing equipment, and the output of controller of fan (63) connects the control end of transformer blower fan; By measuring winding temperature and each the phase electric parameter signal in the dry-type transformer, the overall operation situation that the monitoring dry type becomes, when temperature, voltage or electric current in the dry-type transformer, power, frequency, when power factor is unusual, on-load switch to transformer carries out disjunction and warning, and abnormality is uploaded user side.
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|---|---|---|---|
| CN 200410077495 CN1632996A (en) | 2004-12-22 | 2004-12-22 | An intelligent transformer operating and controlling device and its use |
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| CN 200410077495 CN1632996A (en) | 2004-12-22 | 2004-12-22 | An intelligent transformer operating and controlling device and its use |
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| CN110411591A (en) * | 2019-07-19 | 2019-11-05 | 陕西中财印务有限公司 | A kind of transformer temperature telemetering immediately monitoring alarm system and its monitoring method |
| CN111562036A (en) * | 2020-05-14 | 2020-08-21 | 广东电网有限责任公司 | Online calibration method for transformer oil temperature gauge |
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