CN204575761U - A kind of electric energy quality on-line monitoring device - Google Patents
A kind of electric energy quality on-line monitoring device Download PDFInfo
- Publication number
- CN204575761U CN204575761U CN201520077806.0U CN201520077806U CN204575761U CN 204575761 U CN204575761 U CN 204575761U CN 201520077806 U CN201520077806 U CN 201520077806U CN 204575761 U CN204575761 U CN 204575761U
- Authority
- CN
- China
- Prior art keywords
- module
- signal
- output terminal
- monitoring device
- electric energy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The utility model provides a kind of electric energy quality on-line monitoring device, comprising: Signal-regulated kinase, frequency multiplication of phase locked loop circuit, A/D modular converter, DSP data processing module, detection of electrical leakage module, ARM module and display module; Described Signal-regulated kinase is connected successively with described A/D modular converter, DSP data processing module, ARM module, described frequency multiplication of phase locked loop circuit is connected with described Signal-regulated kinase and A/D modular converter, module and communication module when described ARM module being also connected with described detection of electrical leakage module, school.Electric energy quality on-line monitoring device of the present utility model can monitor the multiple harmonic in electrical network, and frequency difference parameter, can also electric leakage parameter in Sampling network, thus the change in voltage in objective appraisal network.
Description
Technical field
The utility model relates to field of electrical equipment, is specifically related to a kind of electric energy quality on-line monitoring device.
Background technology
Along with the develop rapidly of the progress of society, the development of national economy, plant-scale increasing and science and technology, electric power plays more and more important role in economic life.Simultaneously, the contamination phenomenon of power industry is also day by day serious, as static converter, industry ac-dc conversion device, electric arc furnaces, heavy (merchant) mill, electric locomotive etc., nonlinear load in electric system, impact, wavy load are more and more, cause power network current, voltage waveform distorts, produce a large amount of higher hamonic waves, cause a series of power quality problems such as voltage fluctuation, flickering and three-phase imbalance.The quality of the quality of power supply is directly connected to the overall benefit of national economy.
The quality of power supply, for characterizing the good and bad degree of electric power quality, comprises quality of voltage and frequency quality two parts.Wherein, quality of voltage is divided into again amplitude and waveform quality two aspect, usually weigh voltage magnitude with indexs such as voltage deviation, voltage fluctuation and flicker, negative sequence voltage coefficients (non-equilibrium among three phase voltages), weigh waveform quality with voltage sine wave aberration rate.Frequency quality is then weighed with frequency departure.Quality of voltage problem can be divided into again stable state and transient state two class: stable state disturbance comprises voltage deviation, three-phase imbalance, flickering and harmonic problem; Transient disturbance comprises transient overvoltage, voltage dip, voltage swells and power supply momentary interruption problem.From the frequency occurred and the extent of injury to consumer, Modern Electric Power Quality problem is voltage dip, harmonic wave, Voltage unbalance and flickering mainly.
Utility model content
The utility model provides a kind of electric energy quality on-line monitoring device in order to realize the Real-Time Monitoring to the quality of power supply in power circuit, realizes the various analysis to power quality index and data processing.
The Electric Power Quality On-line Monitor System that the utility model provides comprises:
Signal-regulated kinase, for gathering voltage signal and the current signal of electrical network;
Frequency multiplication of phase locked loop circuit, input end connects the output terminal of described Signal-regulated kinase, for obtaining integer-period sampled signal from described signal conditioning circuit;
A/D modular converter, input end connects the output terminal of described Signal-regulated kinase and the output terminal of described frequency multiplication of phase locked loop circuit respectively, carry out integer-period sampled to voltage signal, current signal that signal conditioning circuit exports, described voltage signal and current signal are become digital quantity; Described A/D modular converter is controlled by described frequency multiplication of phase locked loop circuit output signal; DSP data processing module, input end connects the output terminal of described A/D modular converter, draws power quality parameter for carrying out analysis and calculation to described digital quantity;
Detection of electrical leakage module, for gathering the leakage current simulating signal in power network line;
ARM module, input end connects the output terminal of described DSP data processing module and the output terminal of described detection of electrical leakage module respectively, for obtaining described power quality parameter, leakage current simulating signal, and by built-in A/D conversion chip, leakage current value is converted to leakage current simulating signal;
Display module, input end connects the output terminal of described ARM module, by the control realization power quality parameter of described ARM module and the display translation of leakage current value.
Further, described DSP data processing module is connected with the form of ARM module by dual port RAM communication.
Further, described electric energy quality on-line monitoring device also comprises communication module, the input end of described communication module connects the output terminal of described ARM module, and described communication module comprises Zigbee module, ethernet module, GPRS module, RS485 module or RS232 module.
Wherein, module when also comprising school, during described school, the input end of module connects the output terminal of described ARM module, and during described school, module is made up of GPS module GT-1612-MT, for receiving gps time, is then calibrated described ARM module.
Further, described electric energy quality on-line monitoring device also comprises DSP memory module, ARM memory module;
Further, described DSP memory module is wherein any one or two kinds of the combination of flash memory module and SDRAM memory module, and described ARM memory module is wherein any one or two kinds of the combination of flash memory module, SD card memory module.
Further, described Signal-regulated kinase comprises voltage transformer (VT), current transformer and Anti-aliasing Filter Circuits, and the output terminal of described voltage transformer (VT), the output terminal of described current transformer connect the input end of described Anti-aliasing Filter Circuits respectively.
Further, described frequency multiplication of phase locked loop circuit is CMOS integrated circuit phaselocked loop CD4046 chip.
Further, described display module is touch-screen.
Electric energy quality on-line monitoring device of the present utility model can monitor the multiple harmonic in electrical network, and frequency difference parameter, can also electric leakage parameter in Sampling network, thus the change in voltage in objective appraisal network.
Accompanying drawing explanation
Fig. 1 is the integral module schematic diagram of the utility model electric energy quality on-line monitoring device.
Drawing reference numeral:
1, Signal-regulated kinase; 2, frequency multiplication of phase locked loop circuit; 3, A/D modular converter; 4, DSP data processing module; 5, detection of electrical leakage module; 6, ARM module; 7, display module; 8, communication module; 9, module during school; 10, DSP memory module; 11, ARM memory module.
Embodiment
The utility model provides a kind of electric energy quality on-line monitoring device, comprising: Signal-regulated kinase 1, frequency multiplication of phase locked loop circuit 2, A/D modular converter 3, DSP data processing module 4, detection of electrical leakage module 5, ARM module 6 and display module 7.
Wherein, described frequency multiplication of phase locked loop circuit 2 input end connects the output terminal of described Signal-regulated kinase 1; Described A/D modular converter 3, input end connects the output terminal of described Signal-regulated kinase 1 and the output terminal of described frequency multiplication of phase locked loop circuit 2 respectively; Described DSP data processing module 4 input end connects the output terminal of described A/D modular converter 3; Described ARM module 6 input end connects the output terminal of described DSP data processing module 4 and the output terminal of described detection of electrical leakage module 5 respectively; Display module 7 input end connects the output terminal of described ARM module 6.
Wherein, described Signal-regulated kinase 1 is for gathering voltage signal and the current signal of electrical network; Described frequency multiplication of phase locked loop circuit 2 for obtaining integer-period sampled signal from described signal conditioning circuit; Described A/D modular converter 3 carries out integer-period sampled, to convert digital quantity to for voltage signal, the current signal exported by signal conditioning circuit; Described DSP data processing module 4 draws power quality parameter for carrying out computation and analysis to described digital quantity; Described detection of electrical leakage module 5 is for gathering the leakage current simulating signal in power network line; Described ARM module 6 for obtaining described power quality parameter and leakage current simulating signal, and is converted to leakage current value by built-in A/D conversion chip to leakage current simulating signal; The control realization power quality parameter of described display module 7 by described ARM module 6 and the display translation of leakage current value.
Further, described DSP data processing module 4 is connected by dual port RAM communication with ARM module 6.Wherein, the mode that described twoport ARM debugs makes DSP module 4 more quick with the communication of ARM module 6, more reliably.
Further, described electric energy quality on-line monitoring device also comprises communication module 8, the input end of described communication module 8 connects the output terminal of described ARM module 6, and described communication module 8 comprises Zigbee module, ethernet module, GPRS module, RS485 module or RS232 module.
In the present embodiment, described communication module 8 is Zigbee, Ethernet, GPRS, RS485, RS232 wherein combination of any one or two kinds of or combination of three kinds.When electric energy quality on-line monitoring device distance detection center is far away, by GPRS communication, connect backstage, carry out data interaction, when close together, carry out data interaction by Zigbee, communication mode is selected flexibly, Zigbee is with low cost, escapable cost, and easy to use.
Further, module 9 when this equipment for monitoring power quality also comprises school, during described school, the input end of module 9 connects the output terminal of described ARM module 6, and during described school, module 9 is made up of GPS module GT-1612-MT, for receiving gps time, then described ARM module 6 is calibrated.
Further, described electric energy quality on-line monitoring device also comprises DSP memory module 10, ARM memory module 11.
In the present embodiment, described DSP memory module 10 is connected with described DSP data processing module 4, for expanding the storage area of described DSP data processing module 4; Same, described ARM memory module 11 is connected with described ARM module 6, is mainly used in the storage area expanding described ARM module 6.
Further, described DSP memory module 10 is wherein any one or two kinds of the combination of flash memory module and SDRAM memory module, and described ARM memory module 11 is wherein any one or two kinds of the combination of flash memory module, SD card memory module.
Further, described Signal-regulated kinase 1 comprises voltage transformer (VT), current transformer and Anti-aliasing Filter Circuits, and the output terminal of described voltage transformer (VT), the output terminal of described current transformer connect the input end of described Anti-aliasing Filter Circuits respectively.
Further, described frequency multiplication of phase locked loop circuit 2 is CMOS integrated circuit phaselocked loop CD4046 chip.
Further, described display module 7 is touch-screen.
In the present embodiment, adopt touch-screen while checking the power grid quality data of monitoring intuitively, external control is carried out to described electric energy quality on-line monitoring device.
Claims (8)
1. an electric energy quality on-line monitoring device, is characterized in that, comprises
Signal-regulated kinase, for gathering voltage signal and the current signal of electrical network;
Frequency multiplication of phase locked loop circuit, input end connects the output terminal of described Signal-regulated kinase, for obtaining integer-period sampled signal from described signal conditioning circuit;
A/D modular converter, input end connects the output terminal of described Signal-regulated kinase and the output terminal of described frequency multiplication of phase locked loop circuit respectively, carry out integer-period sampled to voltage signal, current signal that signal conditioning circuit exports, described voltage and current signal are become digital quantity; Described A/D modular converter is controlled by described frequency multiplication of phase locked loop circuit output signal;
DSP data processing module, input end connects the output terminal of described A/D modular converter, draws power quality parameter for carrying out analysis and calculation to described digital quantity;
Detection of electrical leakage module, for gathering the leakage current simulating signal in power network line;
ARM module, input end connects the output terminal of described DSP data processing module and the output terminal of described detection of electrical leakage module respectively, for obtaining described power quality parameter, leakage current simulating signal, and by built-in A/D conversion chip, leakage current value is converted to leakage current simulating signal;
Display module, input end connects the output terminal of described ARM module, by the control realization power quality parameter of described ARM module and the display translation of leakage current value.
2. electric energy quality on-line monitoring device according to claim 1, is characterized in that, described DSP data processing module is connected by dual port RAM communication with ARM module.
3. electric energy quality on-line monitoring device according to claim 1, it is characterized in that, also comprise communication module, the input end of described communication module connects the output terminal of described ARM module, and described communication module comprises Zigbee module, ethernet module, GPRS module, RS485 module or RS232 module.
4. electric energy quality on-line monitoring device according to claim 1, it is characterized in that, module when also comprising school, during described school, the input end of module connects the output terminal of described ARM module, during described school, module is made up of GPS module GT-1612-MT, for receiving gps time, then described ARM module is calibrated.
5. electric energy quality on-line monitoring device according to claim 1, is characterized in that, also comprises DSP memory module, ARM memory module;
Described DSP memory module is wherein any one or two kinds of the combination of flash memory module and SDRAM memory module, and described ARM memory module is wherein any one or two kinds of the combination of flash memory module, SD card memory module.
6. electric energy quality on-line monitoring device according to claim 1, it is characterized in that, described Signal-regulated kinase comprises voltage transformer (VT), current transformer and Anti-aliasing Filter Circuits, and the output terminal of described voltage transformer (VT), the output terminal of described current transformer connect the input end of described Anti-aliasing Filter Circuits respectively.
7. electric energy quality on-line monitoring device according to claim 1, is characterized in that, described frequency multiplication of phase locked loop circuit is CMOS integrated circuit phaselocked loop CD4046 chip.
8. electric energy quality on-line monitoring device according to claim 1, is characterized in that, described display module comprises touch-screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520077806.0U CN204575761U (en) | 2015-02-04 | 2015-02-04 | A kind of electric energy quality on-line monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520077806.0U CN204575761U (en) | 2015-02-04 | 2015-02-04 | A kind of electric energy quality on-line monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204575761U true CN204575761U (en) | 2015-08-19 |
Family
ID=53868379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520077806.0U Active CN204575761U (en) | 2015-02-04 | 2015-02-04 | A kind of electric energy quality on-line monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204575761U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301418A (en) * | 2015-12-03 | 2016-02-03 | 江苏省电力公司扬州供电公司 | Electric energy quality monitoring system and operating method thereof |
| CN106018925A (en) * | 2016-07-15 | 2016-10-12 | 广州开能电气实业有限公司 | DC system intelligent sensor |
| CN106291213A (en) * | 2016-07-22 | 2017-01-04 | 安徽亚辉电气自动化有限公司 | A kind of control system of insulation line monitoring device |
-
2015
- 2015-02-04 CN CN201520077806.0U patent/CN204575761U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301418A (en) * | 2015-12-03 | 2016-02-03 | 江苏省电力公司扬州供电公司 | Electric energy quality monitoring system and operating method thereof |
| CN106018925A (en) * | 2016-07-15 | 2016-10-12 | 广州开能电气实业有限公司 | DC system intelligent sensor |
| CN106291213A (en) * | 2016-07-22 | 2017-01-04 | 安徽亚辉电气自动化有限公司 | A kind of control system of insulation line monitoring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101738592B (en) | Intelligent integrally calibrating device and system for transformer calibrator | |
| CA2838770A1 (en) | Apparatus and method for alternating current physical signals measurement and data acquisition | |
| CN102749549A (en) | Intelligent checking system for substation alternating current voltage secondary circuit | |
| CN108646138A (en) | Network of ship electric energy quality monitoring system based on FPGA and method | |
| CN204575761U (en) | A kind of electric energy quality on-line monitoring device | |
| CN105278439A (en) | Large-capacity alternating-current adjustable simulation test load control system and control method thereof | |
| CN101975881A (en) | Diagnosis and early warning device of faults of mine explosion-proof dry type transformers | |
| CN207164236U (en) | Intelligent substation metering secondary metering device composition error off-line measurement system | |
| CN204439725U (en) | Capacitor banks fault detection system | |
| CN205539204U (en) | Frequency conversion earth impedance measuring apparatu | |
| CN202372592U (en) | Electric energy quality monitoring instrument | |
| CN207181531U (en) | A kind of three phase capacitance electric inductance measuring-testing instrument | |
| CN104569615A (en) | Capacitor bank fault detection system | |
| CN106357303A (en) | Power line carrier communication detection system | |
| CN202041606U (en) | Frequency tripling transformer load test device | |
| CN103323680A (en) | Device for capacitance detection and balanced configuration of capacitor bank | |
| CN202066925U (en) | Harmonic monitor of electric network | |
| CN204374327U (en) | The industrial frequency superimposed harmonic test device of capacitor | |
| CN204330849U (en) | A kind of Multi-function experimental virtual instrument | |
| CN203275517U (en) | Multifunctional three-phase harmonic wave electric energy meter | |
| CN201876495U (en) | Power harmonic intelligent detecting device | |
| CN205038242U (en) | A signal generating device for electric power system live test instrument check -up usefulness | |
| CN105044465A (en) | Automatic balance bridge based on synchronous clock DDS and method for measuring impedance of DUT (Device Under Test) | |
| CN105067851A (en) | Signal generating device for power system energized test instrument calibration | |
| CN205091421U (en) | Synchronous generator winding short circuit alarm device based on negative current |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |