CN201758306U - Comprehensive electric power monitoring analyzer - Google Patents
Comprehensive electric power monitoring analyzer Download PDFInfo
- Publication number
- CN201758306U CN201758306U CN2009202962049U CN200920296204U CN201758306U CN 201758306 U CN201758306 U CN 201758306U CN 2009202962049 U CN2009202962049 U CN 2009202962049U CN 200920296204 U CN200920296204 U CN 200920296204U CN 201758306 U CN201758306 U CN 201758306U
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Abstract
The utility model relates to a comprehensive electric power monitoring analyzer, comprising a three-phase current acquisition module and a three-phase voltage acquisition module, used for performing real-time acquisition of three-phase electricity and converting the three-phase electricity to digital data; an MCU unit, which receives all digital data, calculates and analyzes electric power parameters such as various harmonic wave parameters, voltage deviation, voltage fluctuation, and frequency offset, and controls work of other modules; a display module, used for displaying the electric power parameters; a memory module, used for storing the electric power parameters; a key module, used for querying the electric power parameters; a communication module, used for transmitting the electric power parameters; and a relay output module, comprising a plurality of relays connected with the MCU unit and used for actively protecting the circuit. The comprehensive electric power monitoring analyzer in the utility model can comprehensively analyze quality of electricity consumption, and display electric powers in field or transmit electric powers in long distance, facilitating people to perform proper adjustment; the comprehensive electric power monitoring analyzer can reach the purpose of actively protecting the loop via the relay output module.
Description
Technical field
The utility model relates to a kind of apparatus of electrical monitoring equipment, particularly a kind of comprehensively monitoring analyzer that applies to three-phase alternating current.
Background technology
Because increasingly sophisticatedization of power load and variation, some have non-linear, impact, the abundant application apparatus of harmonic wave, as television set, photocopier, electronic type lighting apparatus, RHVC, arc furnace etc. all is harmonic source, these harmonic currents inject utility network, can influence transformer work, the acceleration metallization film capacitor is aging, increases the transmission line power consumption, influence or interferometry control instrument etc.According to relevant statistics, voltage fluctuation is to cause the power quality problem main cause in the electrical network; The customer complaint that voltage fluctuation causes accounts for more than 80% of whole power quality problem; Simultaneously because voltage fluctuation causes the affected complaint of subscriber equipment to get more and more, cause that China's electric power enterprise is to the concern based on the power quality problem of voltage fluctuation problem.The line voltage deviation is excessive, can cause the power consumption equipment lost of life, the power system stability limit to descend and the increase of operation of power networks expense.Because harmonic wave, voltage fluctuation and voltage deviation etc. influence Electrical Safety, people are badly in need of and will be avoided breaking down to monitoring and analyze with electricity quality adjusting.
The utility model content
The purpose of this utility model provides a kind of combined power monitoring analysis instrument; can synthetically measure the parameters of electric power of three-phase electricity; comprise various harmonic parameters, voltage deviation, voltage fluctuation, frequency departure etc.; and preserve, transmission and initiatively protect the three-phase electricity loop, be convenient to the user all sidedly monitoring analysis with electricity quality to make suitable adjustment.
Above-mentioned purpose is achieved through the following technical solutions:
A kind of combined power monitoring analysis instrument is characterized in that, comprises
Three-phase current acquisition module and three-phase voltage acquisition module are in order to gather and to change into numerical data in real time to three-phase electricity;
The MCU unit, it receives described numerical data, calculates parameters of electric power and analysis, and other modules work of control, and described parameters of electric power is various harmonic parameters, voltage deviation, voltage fluctuation, frequency departure;
Display module, it is connected with described MCU unit, in order to show described parameters of electric power;
Memory module, it is connected with described MCU unit, in order to store described parameters of electric power;
Key-press module, it is connected with described MCU unit, in order to inquire about described parameters of electric power;
Communication module, it is connected with described MCU unit, in order to transmit described parameters of electric power; And
Relay output module, it comprises the relay that a plurality of and described MCU unit is connected, in order to the active protective circuit.
Further scheme is that described communication module comprises RS485 communication module, ethernet communication module, GPRS communication module and the USB communication module that is connected with described MCU unit.
Further scheme is, described memory module comprises ferroelectric memory module and real-time storage module, and described real-time storage module is made of real-time clock RTC and FLASH memory or EEPROM.
The utility model combined power monitoring analysis instrument passes through three-phase voltage, the current acquisition module is gathered three-phase electricity, calculate various harmonic parameters by the MCU unit then, voltage deviation, voltage fluctuation, parameters of electric power such as frequency departure and out-of-limit parameter is set, store respectively by memory module and display module, show parameters of electric power and out-of-limit record, by communication module transferring electric power parameter and out-of-limit record, the use that makes the user can fully understand the electricity consumption situation and adjust power consumption equipment according to power consumption parameter is used electricity quality to improve, prolong the useful life of electric equipment, reach energy conservation object, find incipient fault and avoid fault to take place; By relay output module is set, initiatively to protect three-phase circuit according to out-of-limit situation.Communication module of the present utility model comprises multiple communication modes, specifically comprise the RS485 communication module, ethernet communication module, GPRS communication module and the USB communication module that are connected with described MCU unit, make the variation of this instrumental function, to satisfy the demand of each user, operational environment.
Description of drawings
Fig. 1 is an operating circuit functional block diagram of the present utility model;
Fig. 2 is an operating circuit schematic diagram of the present utility model.
Embodiment
As depicted in figs. 1 and 2, the utility model combined power monitoring analysis instrument comprises MCU unit 1, three-phase current acquisition module 2, three-phase voltage acquisition module 3, display module 4, memory module, RS485 communication module 6, ethernet communication module 7, GPRS communication module 8, USB communication module 9, key-press module 11, indicating lamp module 12 and relay output module 13; Wherein, three-phase current acquisition module 2 and three-phase voltage acquisition module 3 all are 6 passages, the high-precision ADC of 12bit (digital to analog converter), can satisfy 0.2 grade of measuring accuracy; Described memory module comprises ferroelectric memory 5 and real-time storage module 10; MCU unit 1 connects three-phase current acquisition module 2 and three-phase voltage acquisition module 3 by the dma controller (Direct Memory Access, direct memory visit) that carries; MCU unit 1 connects display module 4 and RS485 communication module 6 by the URAT interface, by SPI communication modes and ferroelectric memory 5 and ethernet communication module 7 swap datas, connect GPRS communication module 8 by simulative serial port, be connected with real-time storage module 10 by the I2C bus, by DO mouth (DO: the output of switching value signal) connect relay output module 13; Real-time storage module 10 is by a FLASH memory or EEPROM (EEPROM (Electrically Erasable Programmable Read Only Memo)) and real-time clock RTC formation; Relay output module 13 comprises a plurality of relays that are connected with the DO mouth.
The operation principle and the process of the utility model combined power monitoring analysis instrument:
By three-phase current acquisition module 2 and 3 pairs of current three-phase currents of three-phase voltage acquisition module, three-phase voltage carries out real-time sampling, numerical data after the sampling is sent into MCU unit 1, MCU unit 1 adopts direct memory visit dma controller to handle receiving digital data, direct memory visit (Direct MemoryAccess, DMA) be buffering area or be stored in the mechanism very efficiently of copy data between variable among the RAM in peripheral hardware and RAM, it seldom needs MCU unit 1 to intervene, and dma controller uses special-purpose bus transfer data, therefore, MCU unit 1 receiving digital data very promptly; MCU unit 1 is handled to digital data that the back shows in real time with oscillogram by display module or is shown with the phase vectors figure of electric current and voltage, make the user have and be familiar with more intuitively and make things convenient for the user to do wiring check, thereby improved the convenience of safeguarding greatly, save maintenance cost self power utilization environment.
Establish related software in the MCU unit 1, the data numeral is carried out computational analysis, thereby calculate parameters of electric power such as various harmonic parameters, voltage deviation, voltage fluctuation, frequency departure, these algorithms are known to one skilled in the art; Wherein, the utility model provides voltage, current harmonics component to reach 63 times, and count three-phase voltage, the total percent harmonic distortion of electric current (THD), odd harmonic aberration rate (THD Odd), even-order harmonic aberration rate (THD Even) respectively, adopt the expression way of each harmonic component and first-harmonic ratio to describe the block diagram of preceding 31 order harmonic components by display module 4, and show odd/even/total voltage percent harmonic distortion.The utility model is also set out-of-limit parameter at each parameters of electric power, writes down and points out out-of-limit situation realize to occur; When the voltage deviation value out-of-limit, the date that the utility model can be preserved this voltage deviation automatically and produce this voltage, time and be stabilized in this voltage-operated duration; If current frequency overfrequency deviation allowable value, the date that the utility model can be preserved this frequency departure automatically and produce this frequency, time and the duration that is stabilized in this frequency operation.The utility model also provides the failure wave-recording function, when electrical network runs into impact load switching or other interference and causes voltage or electric current to produce very great fluctuation process, this phase voltage or current waveform are preserved exactly, mainly comprise the upper punch of voltage/sink the voltage that short time voltage is interrupted, current waveform etc.The utility model also provides average current, total active power, total reactive power, the requirement statistics of total apparent power.For above data, the utility model is stored to ferroelectric memory 5 and real-time storage module 10.
The utility model combined power monitoring analysis instrument can transmit and the various data of bulletin (comprising out-of-limit record) in many ways.Described RS485 communication module 6 is connected with MCU unit 1, generally speaking, mainly is to upload data to host computer by this way.Described ethernet communication module 7, be connected with MCU unit 1, when the data volume transmission quantity is bigger, such as some data record, fault recorder data, power quality analysis data or the like, must adopt the fast ethernet communication module 7 of transmission rate to upload data, and the response speed of ethernet communication module 7 is fast, can satisfy the demand of real-time monitoring.Described GPRS communication module 8 is connected with MCU unit 1, with wireless communication mode transmission data, can satisfy remote monitoring.Described USB communication module 9 is connected with MCU unit 1, to carry out on-the-spot reading of data, can solve difficult wiring etc.
The user power utilization quality is in time informed in the on-the-spot display module or the transmission of communication module, can make things convenient for the user to adjust the electricity consumption situation in time, comprise by reactive power compensation and improve power factor and reduce the service time of active loss, power consumption equipment and eliminate incipient fault, thus reach energy-conservation, raise the management level and with use electricity quality.
Except uploading out-of-limit situation; the utility model combined power monitoring analysis instrument also has initiatively defencive function; described relay output module 13 is connected with the DO mouth (DO: the switching value signal is exported) of MCU unit 1; when out-of-limit situation occurring; 13 1 signals of described relay output module are given in MCU unit 1; relevant relay in the relay output module 13 will start, and disconnects relevant device or loop, reaches initiatively protective circuit purpose.
With the operate as normal that shows some modules whether described indicating lamp module 12 is connected with MCU unit 1,, be convenient to service equipment.The user can be by the data in the key-press module 11 inquiry memory modules.
The utility model is not limited to the foregoing description, based on simple replacement the foregoing description, that do not make creative work, should belong to the scope that the utility model discloses.
Claims (4)
1. a combined power monitoring analysis instrument is characterized in that, comprises
Three-phase current acquisition module and three-phase voltage acquisition module are in order to gather and to change into numerical data in real time to three-phase electricity;
The MCU unit, it receives described numerical data, calculates parameters of electric power and analysis, and other modules work of control, and described parameters of electric power is various harmonic parameters, voltage deviation, voltage fluctuation, frequency departure;
Display module, it is connected with described MCU unit, to show described parameters of electric power;
Memory module, it is connected with described MCU unit, to store described parameters of electric power;
Key-press module, it is connected with described MCU unit, to inquire about described parameters of electric power;
Communication module, it is connected with described MCU unit, in order to transmit described parameters of electric power; And
Relay output module, it comprises the relay that a plurality of and described MCU unit is connected, in order to the active protective circuit.
2. combined power monitoring analysis instrument according to claim 1 is characterized in that, described communication module comprises RS485 communication module, ethernet communication module, GPRS communication module and the USB communication module that is connected with described MCU unit.
3. combined power monitoring analysis instrument according to claim 1 is characterized in that described memory module comprises ferroelectric memory module and real-time storage module, and described real-time storage module is made of real-time clock RTC and FLASH memory or EEPROM.
4. combined power monitoring analysis instrument according to claim 1 is characterized in that, also comprises the indicating lamp module that is connected with described MCU unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202962049U CN201758306U (en) | 2009-12-30 | 2009-12-30 | Comprehensive electric power monitoring analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202962049U CN201758306U (en) | 2009-12-30 | 2009-12-30 | Comprehensive electric power monitoring analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201758306U true CN201758306U (en) | 2011-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202962049U Expired - Lifetime CN201758306U (en) | 2009-12-30 | 2009-12-30 | Comprehensive electric power monitoring analyzer |
Country Status (1)
| Country | Link |
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| CN (1) | CN201758306U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604990A (en) * | 2013-11-27 | 2014-02-26 | 国家电网公司 | Power harmonic wave detection and analysis equipment |
| CN111463904A (en) * | 2020-05-07 | 2020-07-28 | 杭州思顺电子科技有限公司 | Electric power protection system based on harmonic monitoring |
| CN113030791A (en) * | 2021-03-01 | 2021-06-25 | 中电电气(江苏)变压器制造有限公司 | Transformer harmonic current analysis and power output capability analyzer |
-
2009
- 2009-12-30 CN CN2009202962049U patent/CN201758306U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604990A (en) * | 2013-11-27 | 2014-02-26 | 国家电网公司 | Power harmonic wave detection and analysis equipment |
| CN111463904A (en) * | 2020-05-07 | 2020-07-28 | 杭州思顺电子科技有限公司 | Electric power protection system based on harmonic monitoring |
| CN113030791A (en) * | 2021-03-01 | 2021-06-25 | 中电电气(江苏)变压器制造有限公司 | Transformer harmonic current analysis and power output capability analyzer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHUHAI PILOT TECHNOLOGY CO., LTD. Free format text: FORMER NAME: PAINUO ELECTRONIC CO., LTD., ZHUHAI |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 519080, Zhuhai, Guangdong Province, Tang hi tech Zone Innovation all the way to create a soft science and Technology Park, A3 Patentee after: Zhuhai Pilot Technology Co., Ltd. Address before: 519080, Zhuhai, Guangdong Province, Tang hi tech Zone Innovation all the way to create a soft science and Technology Park, A3 Patentee before: Zhuhai Pilot Electronics Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110309 |
|
| CX01 | Expiry of patent term |