CN201893606U - Distribution transformer monitoring management terminal - Google Patents
Distribution transformer monitoring management terminal Download PDFInfo
- Publication number
- CN201893606U CN201893606U CN201020205775XU CN201020205775U CN201893606U CN 201893606 U CN201893606 U CN 201893606U CN 201020205775X U CN201020205775X U CN 201020205775XU CN 201020205775 U CN201020205775 U CN 201020205775U CN 201893606 U CN201893606 U CN 201893606U
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- distribution transformer
- transformer monitoring
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model discloses a distribution transformer monitoring management terminal which comprises a CPU (Central Processing Unit) module, wherein the CPU module comprises a master control chip and an A/D (analog/digital) converter chip, the master control chip is a 32 bit micro-controller based on an ARM7TDMI kernel, the A/D converter chip adopts a dedicated metering chip CS5463, the AC voltage and current enter into the dedicated metering chip CS5463 after sampling, and the signal output from the dedicated metering chip CS5463 enters into the master control chip through an interface. The distribution transformer monitoring management terminal integrates multiple functions to replace multiple products with single function, so that the hardware investment is reduced, the comprehensive line loss is lowered, the power is saved and great economic benefits are generated.
Description
Technical field
The utility model relates to a kind of distribution transformer monitoring office terminal.
Background technology
Distribution transformer is a power equipment of electric energy directly being distributed to special change user or low-voltage customer, its ruuning situation and service data are the vital parts of whole power distribution network, therefore must launch work such as operational monitoring, metering, voltage statistic, harmonic wave monitoring, idle control to power distribution network.
Because around the transformer all is the higher-pressure region, there is certain danger, and transformer generally is installed in from community place far away, staff and power supply department all can not be understood its operating state before transformer breaks down, and prior art is very backward to the monitoring of transformer running status, monitoring terminal circuit structure complexity, function is simple, and stability and anti-interference are relatively poor, though some transformer monitoring device has also used digital module or intelligent apparatus, but fail safe is not high, and function singleness is with high costs.
Currently just needing a kind of being applicable to public become and large user's monitoring collection, be applicable to the whole efficiency monitoring that power distribution network begins from the distribution line outlet and the terminal system of optimization, power distribution network is launched work such as operational monitoring, metering, voltage statistic, harmonic wave monitoring, idle control, the efficiency monitoring and optimization terminal system of above-mentioned functions unification are provided, are used for substituting the product of a plurality of simple functions in early stage.But if adopt conventional design, the peripheral circuit of above-mentioned five functional unification terminals will be very complicated, and the stability of terminal and reliability will reduce.
The utility model content
It is simple that technical problem to be solved in the utility model provides a kind of peripheral circuit, and monitoring of the efficiency of integrated functional unifications such as distribution transformer monitoring device, multifunctional electric energy meter, humorous wave table, statistics type voltmeter, idle compensating control, teletransmission communication device and the distribution transformer monitoring office terminal of optimizing.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of distribution transformer monitoring office terminal, comprise the CPU module, and the CPU module comprises main control chip and A/D conversion chip, described main control chip is 32 8-digit microcontrollers based on the ARM7TDMI kernel.
Described A/D conversion chip adopts special-purpose computation chip CS5463, and the alternating voltage electric current enters special-purpose computation chip CS5463 after sampling, and the signal of special-purpose computation chip CS5463 output enters main control chip through interface.
The LPC2378 that described master control chip adopts the Philip to produce, LPC2378 is based on 32 8-digit microcontrollers of ARM7TDMI kernel, and it has simplified peripheral circuit, has reduced the hardware cost of system.Program and storage RAM have improved interference free performance, the stability of system in LPC2378 inside.
Described distribution transformer monitoring office terminal also comprises communication module, and communication module is GPRS communication module, RS232 communication module, RS485 communication module or infrared communication module.
It is core that the utility model adopts special-purpose computation chip CS5463 and high 32 integrated arm processor, the CS5463 itself that adopts can provide instantaneous sampled data, utilize these data can realize that the metering system of similar common AD+MCU (CPU) has extensive diagnostic characteristic flexibly, reduce the amount of calculation of MCU and the consumption of MCU resource, do not need AC sampling, the electric energy metrical scheduling algorithm designs, coding, debugging, save the development time, operation is simplified greatly, reduce complexity of peripheral circuits, improve the stability and the reliability of device, convenient greatly on-the-spot I﹠M, realize the efficiency monitoring and optimization terminal of five functional unifications, substitute the product of a plurality of simple functions, reduce hardware investment, reduce comprehensive line loss, save power.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model;
Fig. 2 is a theory diagram of the present utility model;
Fig. 3 is the A/D conversion chip partial circuit figure of the utility model CPU module;
Fig. 4 is the main control chip partial circuit figure of the utility model CPU module;
Embodiment
Distribution transformer monitoring of the present utility model office terminal, as shown in Figure 1, by CPU module 1, sampling module 2, control module 3, display module 4, communication module 5 is formed by connecting, the lead-out terminal of sampling module 2 is connected to the input terminal of CPU module 1, the lead-out terminal of CPU module 1 is connected to the input terminal of display module 4, the lead-out terminal of CPU module 1 is connected to the input terminal of control module 3, the lead-out terminal of CPU module 1 can pass through the GPRS communication module, RS232, communication modules 5 such as RS485 communication module send data to the distribution transformer monitoring background management system by wired or wireless mode.
As shown in Figure 2, the CPU module 1 of distribution transformer monitoring office terminal mainly contains master control chip, RS232/RS485 part, storage area, button part, RTC partly forms.
The LPC2378 (as shown in Figure 4) that the master control chip of distribution transformer monitoring office terminal adopts the Philip to produce, LPC2378 is based on 32 8-digit microcontrollers of ARM7TDMI kernel, it is powerful and cost efficiency is high, its chip integration has become jumbo program FLASH, integrated various communication port such as serial ports, network interface, SPI mouth etc., simplify peripheral circuit greatly, reduced the hardware cost of system.Program and storage RAM have improved interference free performance, the stability of system in LPC2378 inside.
Button adopts the 1*4 keyboard, makes things convenient for the operation of terminal.Clock adopts the high accuracy clock chip as the clock source, produces accurate pulse per second (PPS), and has stand-by power supply to power to clock, guarantees the accurate continual operation of clock.
Terminal adopts high capacity FLASH storage chip and port, makes termination function more powerful.
Sampling module voltage and current sample be by the PT on the sampling module, and the CT loop converts thereof into weak electric signal and delivers to and carry out the A/D sampling processing on the CPU module 1.
Shown in Fig. 3 A/D conversion chip partial circuit figure, metering section has adopted special-purpose computation chip CS5463, the measurement and the calculating of the inner metering of finishing electric energy automatically, current effective value, voltage effective value, active power, reactive power, frequency, power factor.This mode is compared with the metering system that adopts common AD+MCU (CPU), at first significantly reduces the consumption of amount of calculation and the MCU resource of MCU; Secondly we do not need AC sampling, electric energy metrical scheduling algorithm are designed, encode, debug, and save the development time, have improved the stability of device simultaneously.CS5463 itself can provide instantaneous sampled data, adopts the method for fft conversion to calculate for the measurement of the measurement of harmonic wave, degree of unbalance, zero sequence amount, and the zero sequence amount also can need not be calculated by the direct mode of collection.
The pulse output is that active energy and reactive energy that terminal calculates are exported to the measuring accuracy use of metering correction platform as the test distribution transformer terminals by pulse.Remote signalling amount collecting part is the external switch amount to be isolated by light gather, and can differentiate the operational mode of transformer according to the signal of switching value, the switching of metering door, information such as the state of circuit breaker.
Adopt multiple design on control module 3 circuit, prevent misoperation, improved the reliability of device.All control sections and remote signalling part have all adopted the quarantine measures of forceful electric power and light current, have all designed corresponding protection circuit, have guaranteed the safety of the equipment and the person.
The GPRS communication is installed with the separate modular card format, and mainboard provides the unified interface of docking with the GPRS module.Device can carry the communication module 5 of different model as required flexibly.LPC2378 carries network interface, and device needs corresponding ICP/IP protocol stack to match with it.Increase ppp protocol on this basis and just can use self, that is to say and to use more economic GPRS module to save cost not with the GPRS module of protocol stack.
Distribution transformer monitoring office terminal device is mainly used in the electric parameters of distribution transformer and the measurement of non-electric quantity, transformer energy metering etc., CPU module 1 is mainly finished: to the three-phase voltage of acquisition module input, three-phase current, active power, reactive power, power factor, mains frequency, the electric current and voltage phase angle, electric current and voltage 2-19 subharmonic, the aberration rate of electric current and voltage, tri-phase unbalance factor, the oily temperature of transformer etc. is analyzed, and the hyperline parameter is analyzed the back produce alarm signal, as overvoltage, overcurrent is reported to the police, and the decompression defluidization is reported to the police, overload is reported to the police, negative phase sequence is reported to the police, reversed polarity is reported to the police, phase breaking alarm, uneven report from a liner more is alert etc.The CPU module is also carried out the statistic record of various data, as the statistics of rate of qualified voltage: statistics voltage maximin and go out now, average voltage, voltage super on the value of rolling off the production line and go out between now, voltage qualified time, voltage president timing and on surpassing to roll off the production line the time; Power extreme value and go out the statistics of now, the minimax requirement and go out now statistics etc.Metering for electric weight can be measured at times, and the setting of time is large period with the year, year is divided into several time zones, and each time zone is the minor cycle with the sky, is divided into several periods, corresponding a kind of rate of each period in one day.12 time zones, period 10 day, segment table in the time of 6 is supported to stop in week day, period festivals or holidays; Can be divided into point, cutting edge of a knife or a sword, flat, paddy period every day.Terminal is analyzed power factor, and reactive power compensator is controlled, and realizes the function of idle compensating control.Terminal also has meter-reading function, by 485 mouthfuls, adopts 645 stipulations to finish, and the time of checking meter can be set, check meter and check meter in real time at interval, can upload this collection capacity to the distribution transformer monitoring and metering background system by GPRS or RS232/485 after checking meter.
The distribution transformer monitoring office terminal has infrared mouthful, can realize remote parameter setting to terminal by infrared equipment, browsing data, and terminal also has one 232 mouthfuls, and two 484 mouthfuls, a port, stipulations meet country and industry standard.
Modularized design is adopted in the distribution transformer monitoring office terminal, and plug and play is convenient to on-site maintenance and Installation and Debugging, and can further reduce cost according to the module on the on-the-spot needs reduction terminal.
The uCOS-II embedded real-time multi-task operating system is adopted in the distribution transformer monitoring office terminal.UCOS-II and other embedded OS Comparatively speaking, have kernel little, take the very little program space and memory headroom; Advantages such as fixing and extremely short task switching time, the middle-size and small-size embedded system that is fit to very much high real-time is used.
Distribution transformer monitoring office terminal electric energy metrical precision should be able to satisfy the requirement of 0.5 grade of active electrical degree, 1.0 grades of idle electric degrees.Working power: terminal is used the three-phase and four-line ac power supply method, under the situation of two wires broken string arbitrarily, terminal can be under the deviation of rated voltage-10%～+ 30% operate as normal.Anti-earth fault ability: when the power supply of terminal is powered by the three-phase and four-line power distribution network of non-effectively earthed system or isolated neutral system, in earth fault and relatively producing under the 10% superpotential situation, there are not two phase-to-ground voltages of ground connection will reach 1.9 times nominal voltage, kept 4 hours, damaging does not appear in terminal, the normal back of service restoration terminal operate as normal is preserved data and should do not lost.Storage: 32M is provided the storage area, and the power down data are preserved can reach 10 years.
The utility model provides the efficiency monitoring and optimization terminal of five functional unifications, substitutes the product of a plurality of simple functions in early stage, produces huge economic benefit.
Claims (4)
1. a distribution transformer monitoring office terminal comprises the CPU module, and the CPU module comprises main control chip and A/D conversion chip, it is characterized in that: described main control chip is 32 8-digit microcontrollers based on the ARM7TDMI kernel.
2. distribution transformer monitoring according to claim 1 office terminal, it is characterized in that: described A/D conversion chip adopts special-purpose computation chip CS5463, the alternating voltage electric current enters special-purpose computation chip CS5463 after sampling, the signal of special-purpose computation chip CS5463 output enters main control chip through interface.
3. distribution transformer monitoring according to claim 1 office terminal is characterized in that: described main control chip is ARM LPC2378.
4. according to claim 1,2 or 3 described distribution transformer monitoring office terminals, it is characterized in that: described distribution transformer monitoring office terminal also comprises communication module, and described communication module is GPRS communication module, RS232 communication module, RS485 communication module or infrared communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020205775XU CN201893606U (en) | 2010-05-12 | 2010-05-12 | Distribution transformer monitoring management terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020205775XU CN201893606U (en) | 2010-05-12 | 2010-05-12 | Distribution transformer monitoring management terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201893606U true CN201893606U (en) | 2011-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020205775XU Expired - Fee Related CN201893606U (en) | 2010-05-12 | 2010-05-12 | Distribution transformer monitoring management terminal |
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| CN (1) | CN201893606U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590649A (en) * | 2011-09-28 | 2012-07-18 | 上海久创电气自动化设备有限公司 | Low-voltage detection system and method |
| CN103529290A (en) * | 2012-11-02 | 2014-01-22 | 国家电网公司 | Three-phase intelligent meter capable of acquiring information of power distribution and power utilization |
| CN105006892A (en) * | 2015-07-13 | 2015-10-28 | 上海电力学院 | Power distribution network intelligent feeder terminal based on embedded advanced RISC machines (ARM) and multiple communication protocols |
| CN107797008A (en) * | 2017-11-20 | 2018-03-13 | 国家电网公司 | New acquisition terminal testing stand |
| CN112865323A (en) * | 2021-03-15 | 2021-05-28 | 青岛鼎信通讯股份有限公司 | Harmonic analysis and three-phase imbalance monitoring method based on intelligent CT |
-
2010
- 2010-05-12 CN CN201020205775XU patent/CN201893606U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590649A (en) * | 2011-09-28 | 2012-07-18 | 上海久创电气自动化设备有限公司 | Low-voltage detection system and method |
| CN103529290A (en) * | 2012-11-02 | 2014-01-22 | 国家电网公司 | Three-phase intelligent meter capable of acquiring information of power distribution and power utilization |
| CN105006892A (en) * | 2015-07-13 | 2015-10-28 | 上海电力学院 | Power distribution network intelligent feeder terminal based on embedded advanced RISC machines (ARM) and multiple communication protocols |
| CN105006892B (en) * | 2015-07-13 | 2018-08-17 | 上海电力学院 | A kind of power distribution network intelligent FTU based on embedded-type ARM and multi-communication protocol |
| CN107797008A (en) * | 2017-11-20 | 2018-03-13 | 国家电网公司 | New acquisition terminal testing stand |
| CN112865323A (en) * | 2021-03-15 | 2021-05-28 | 青岛鼎信通讯股份有限公司 | Harmonic analysis and three-phase imbalance monitoring method based on intelligent CT |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Tu Labao Document name: Notification to Pay the Fees |
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| DD01 | Delivery of document by public notice |
Addressee: Jiangsu Gufeng Power Technology Co., Ltd. Document name: Notification of Termination of Patent Right |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110706 Termination date: 20140512 |
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| EXPY | Termination of patent right or utility model |