CN201440158U - Power quality monitoring and analyzing device - Google Patents
Power quality monitoring and analyzing device Download PDFInfo
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- CN201440158U CN201440158U CN2009201617319U CN200920161731U CN201440158U CN 201440158 U CN201440158 U CN 201440158U CN 2009201617319 U CN2009201617319 U CN 2009201617319U CN 200920161731 U CN200920161731 U CN 200920161731U CN 201440158 U CN201440158 U CN 201440158U
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Abstract
The utility model provides a power quality monitoring and analyzing device, which comprises a voltage transformer module, a current transformer module, a power signal collecting module, a first processing module, a second processing module, a first communication interface module and a second communication interface module, wherein the signal collecting ends of the voltage transformer module and the current transformer module are connected with a power bus; the power signal collecting module is connected with the voltage transformer module and the current transformer module and is used to collect power signals; the first processing module is connected with the power signal collecting module; the second processing module is connected with the first processing module through a dual-port RAM module; and both the first communication interface module and the second communication interface module are connected with the second processing module. The power quality monitoring and analyzing device can monitor and display the power quality indexes and general power parameters of voltage deviation, frequency deviation, harmonic, three-phase voltage imbalance and voltage fluctuation and flicker of the three-phase voltage at real time, and can transmit the data to a master station through the communication interfaces thereof.
Description
Technical field
The utility model relates to the electric energy quality monitoring technical field, particularly a kind of electric energy quality monitoring and analytical equipment.
Background technology
Along with developing rapidly of novel electric power electric equipment, opertaing device and the widespread use of electronic installation in customer charge based on computer system, great change has taken place in the power load structure in the modern power systems, and the quality of power supply has become the major issue of electric power enterprise and user's common concern.Electric energy quality monitoring is the actual conditions of grasping grid supply quality, the prerequisite of improving the quality of power supply, and equipment for monitoring power quality is an electric energy quality monitoring work necessary tool.At present, the equipment for monitoring power quality on the market mainly has the following disadvantages: data-handling capacity is not strong, and real-time is not high; Data acquisition rate is low, and A/D conversion accuracy is low; Digital communicating ability is limited, is difficult for realizing the teledata exchange, shares; Partial devices adopts PC as measurement mechanism, and volume is big, cost is higher.
Therefore, how above-mentioned technical matters is solved, be the direction place that those skilled in the art study.
Summary of the invention
Fundamental purpose of the present utility model provides a kind of electric energy quality monitoring and analytical equipment, it has solved, and microprocessor data processing power in the prior art problem is low, system real time is poor, digital communicating ability is limited, is difficult for realizing problems such as teledata exchanges, shares.
In order to achieve the above object, the utility model is by a kind of electric energy quality monitoring and analytical equipment, and it comprises:
One voltage transformer (VT) module, its signals collecting end is connected with power bus-bar;
One current transformer module, its signals collecting end is connected with power bus-bar;
One electric power signal acquisition module, it links to each other with described voltage transformer (VT) module and described current transformer module, is used to gather electric power signal;
One first processing module, it links to each other with described electric power signal acquisition module;
One second processing module, it links to each other with described first processing module by a dual port RAM module;
One first communication interface modules, it links to each other with described second processing module;
One second communication interface module, it links to each other with described second processing module.
Preferable, described first processing module is a high-speed digital signal processing module,
Preferable, described second processing module is an embedded processing module.
Preferable, described first communication interface modules is a Modbus communication interface modules.
Preferable, described second communication interface module is an ethernet interface module.
Preferable, described high-speed digital signal processing module comprises a high-speed dsp digital signal processing module, a SRAM data memory module, an E
2A PROM parameter memory module and a digital quantity input/output module; Wherein, described SRAM data memory module, described E
2The PROM parameter memory module all links to each other with described high-speed dsp digital signal processing module with described digital quantity input/output module.
Preferable, described flush bonding processor module comprises an ARM flush bonding processor module, a SDRAM data memory module, a liquid crystal display circuit module and a keyboard input circuit module; Wherein, described DRAM data memory module, described liquid crystal display circuit module and described keyboard input circuit module all link to each other with described ARM flush bonding processor module.
Preferable, described high-speed dsp digital signal processing module links to each other with described electric power signal acquisition module and described dual port RAM module.
Preferable, described ARM flush bonding processor module links to each other with described dual port RAM module, described first communication interface modules and described second communication construction module.
Compared with prior art, the beneficial effects of the utility model are: the utility model can be monitored power quality index and conventional electric power parameters such as the voltage deviation that shows three-phase voltage, frequency departure, harmonic wave, tri-phase unbalance factor, voltage fluctuation and flicker in real time, and can be transferred to main website by the communication interface of himself.The utility model has been given full play to system's control ability of the signal handling capacity and the embedded processors ARM of digital signal processor DSP, and not only computing velocity is fast, the computational accuracy height, and have friendly man-machine interface and good communication function.
Description of drawings
Fig. 1 is an embodiment composition frame chart of the utility model electric energy quality monitoring and analytical equipment;
Fig. 2 is another embodiment composition frame chart of the utility model electric energy quality monitoring and analytical equipment.
Description of reference numerals: 1-first processing module; 2-second processing module; 3-dual port RAM module; 4-electric power signal acquisition module; 5-voltage transformer (VT) module; The 6-current transformer module; 7-first communication interface modules; 8-second communication interface module; 11-high-speed dsp digital signal processing module; The 12-SRAM data memory module; 13-E
2The PROM parameter memory module; 14-digital quantity input/output module; 21-ARM flush bonding processor module; The 22-SDRAM data memory module; 23-liquid crystal display circuit module; 24-keyboard input circuit module.
Embodiment
Below in conjunction with accompanying drawing, be described in more detail with other technical characterictic and advantage the utility model is above-mentioned.
See also Fig. 1, be an embodiment composition frame chart of utility model electric energy quality monitoring and analytical equipment, it comprises: voltage transformer (VT) module 5, current transformer module 6 and electric power signal acquisition module 4; Four voltage signal acquisition ends of voltage transformer (VT) module 5 respectively with the A of power bus-bar mutually, B phase, C link to each other with N mutually; Four current signal collection terminals of current transformer module 6 also respectively with the A of power bus-bar mutually, B phase, C link to each other with N mutually; The voltage signal I/O of voltage transformer (VT) module 5 links to each other with the first voltage signal input/output terminal of electric power signal acquisition module 4; The current signal I/O of current transformer module 6 links to each other with the second current signal input/output terminal of electric power signal acquisition module 4.
The utility model electric energy quality monitoring and analytical equipment also comprise first processing module 1, second processing module 2, dual port RAM module 3, first communication interface modules 7 and second communication interface module 8; The voltage of first processing module 1 and current signal input/output terminal link to each other with the voltage and the current signal I/O of electric power signal acquisition module 4; The first signal of communication I/O of second processing module 2 links to each other with the signal of communication input/output terminal of first communication interface modules 7, and the second communication signal I/O of second processing module 2 links to each other with the signal of communication input/output terminal of second communication interface module 8; Data sharing between first processing module 1 and second processing module 2 realizes by dual port RAM module 3.Wherein, described first processing module 1 can be the high-speed digital signal processing module, described second processing module 2 can be the flush bonding processor module; Electric power signal acquisition module 4 available models are the chip of AD7656, and voltage transformer (VT) module 5 available models are the chip of TR1139-1C, and current transformer module 6 available models are the chip of TR0139-2C.
See also as shown in Figure 2, described first processing module 1 can be the high-speed digital signal processing module, described second processing module 2 can be the flush bonding processor module; Wherein, described high-speed digital signal processing module comprises high-speed dsp digital signal processing module 11, SRAM data memory module 12, E
2PROM parameter memory module 13 and digital quantity input/output module 14.
Wherein, the data storage I/O of high-speed dsp digital signal processing module 11 links to each other with the data storage input/output terminal of SRAM data memory module 12, the parameter storage I/O and the E of high-speed dsp digital signal processing module 11
2The parameter storage input/output terminal of PROM parameter memory module 13 links to each other, the digital quantity I/O of high-speed dsp digital signal processing module 11 links to each other with the digital quantity input/output terminal of digital quantity input/output module 14, and the shared data storage I/O of high-speed dsp digital signal processing module 11 links to each other with the shared data storage input/output terminal of dual port RAM module 3; The voltage of described high-speed dsp digital signal processing module 11 and current signal input/output terminal are the voltage and the current signal input/output terminal of high-speed digital signal processing module 1; The voltage of high-speed dsp digital signal processing module 11 and current signal input/output terminal link to each other with the voltage and the current signal I/O of electric power signal acquisition module 4;
Described SRAM data memory module 12 can be the data memory module with static access facility, described E
2PROM parameter memory module 13 can be the parameter memory module of electric erasable, and described digital quantity input/output module 14 can be signal input and output buffer module; Wherein, it is the chip of TMS320F2812 that described high-speed dsp digital signal processing module 11 is selected model for use, and it is the chip of IS61LV25616L that described SRAM data memory module 12 is selected model for use, described E
2The model that PROM parameter memory module 13 is selected for use is the chip of AT28BV256, and the model that described digital quantity input/output module 14 is selected for use is the chip of SN74LS245, and it is the chip of IDT70V9289L7 that described dual port RAM module 3 is selected model for use.
Described second processing module 2 can be the flush bonding processor module, and described flush bonding processor module 2 comprises ARM flush bonding processor module 21, SDRAM data memory module 22, liquid crystal display circuit module 23 and keyboard input circuit module 24.Wherein, the data storage I/O of ARM flush bonding processor module 21 links to each other with the data storage input/output terminal of SDRAM data memory module 22, and the VT of ARM flush bonding processor module 21 links to each other with the video signal input terminal of liquid crystal display circuit module 23; The keyboard signal output terminal of ARM flush bonding processor module 21 links to each other with the keyboard signal input end of keyboard input circuit module 24.Described ARM flush bonding processor module 21 realize by dual port RAM module 3 and first processing module 1 between carry out data sharing.The first signal of communication I/O of ARM flush bonding processor module 21 links to each other with the signal of communication input/output terminal of first communication interface modules 7, and the second communication signal I/O of ARM flush bonding processor module 21 links to each other with the signal of communication input/output terminal of second communication interface module 8; Wherein, it is the chip of LR-050VRAM that liquid crystal display circuit module 14 can be selected model for use, and it shows that size is 320 * 234 pixels.
First communication interface modules 7 of the present utility model can adopt the Modbus communication interface modules.First communication interface modules, 7 available models are the chip of MAX485.
Present embodiment second communication interface module 8 can adopt the ethernet interface module.Second communication interface module 8 available models are the chip of RTL8019AS.
The utility model will be monitored the three-phase four-wire system power source voltage that collects by voltage transformer (VT) module 5 summation current transformer modules 6 by electric power signal acquisition module 4, after the current signal conversion, be transferred in the high-speed dsp digital signal processing module 11 in the high-speed digital signal processing module 1, high-speed dsp digital signal processing module 11 carries out overall treatment with above-mentioned data, be transferred in the flush bonding processor module 2 by dual port RAM module 3 then, ARM flush bonding processor module 21 is responsible on liquid crystal display circuit module 23 showing in real time power quality parameter and other parameters of electric power, by first communication interface modules 7 or second communication interface module 8 data transmission is gone out simultaneously.
The utility model can be monitored power quality index and conventional electric power parameters such as the voltage deviation that shows three-phase voltage, frequency departure, harmonic wave, tri-phase unbalance factor, voltage fluctuation and flicker in real time, and can be transferred to main website by the communication interface of himself.The utility model has been given full play to system's control ability of the signal handling capacity and the embedded processors ARM of digital signal processor DSP, and not only computing velocity is fast, the computational accuracy height, and have friendly man-machine interface and good communication function.
More than explanation is just illustrative for the utility model; and it is nonrestrictive; those of ordinary skills understand; under the situation of the spirit and scope that do not break away from following claims and limited; can make many modifications; change, or equivalence, but all will fall in the protection domain of the present utility model.
Claims (9)
1. electric energy quality monitoring and analytical equipment is characterized in that it comprises
One voltage transformer (VT) module, its signals collecting end is connected with power bus-bar;
One current transformer module, its signals collecting end is connected with power bus-bar;
One electric power signal acquisition module, it links to each other with described voltage transformer (VT) module and described current transformer module, is used to gather electric power signal;
One first processing module, it links to each other with described electric power signal acquisition module;
One second processing module, it links to each other with described first processing module by a dual port RAM module;
One first communication interface modules, it links to each other with described second processing module;
One second communication interface module, it links to each other with described second processing module.
2. electric energy quality monitoring according to claim 1 and analytical equipment is characterized in that, described first processing module is a high-speed digital signal processing module,
3. electric energy quality monitoring according to claim 1 and analytical equipment is characterized in that, described second processing module is an embedded processing module.
4. electric energy quality monitoring according to claim 1 and analytical equipment is characterized in that, described first communication interface modules is a Modbus communication interface modules.
5. electric energy quality monitoring according to claim 1 and analytical equipment is characterized in that, described second communication interface module is an ethernet interface module.
6. electric energy quality monitoring according to claim 2 and analytical equipment is characterized in that, described high-speed digital signal processing module comprises a high-speed dsp digital signal processing module, a SRAM data memory module, an E
2A PROM parameter memory module and a digital quantity input/output module; Wherein, described SRAM data memory module, described E
2The PROM parameter memory module all links to each other with described high-speed dsp digital signal processing module with described digital quantity input/output module.
7. electric energy quality monitoring according to claim 3 and analytical equipment, it is characterized in that described flush bonding processor module comprises an ARM flush bonding processor module, a SDRAM data memory module, a liquid crystal display circuit module and a keyboard input circuit module; Wherein, described DRAM data storage mould is determined, described liquid crystal display circuit module all links to each other with described ARM flush bonding processor module with described keyboard input circuit module.
8. electric energy quality monitoring according to claim 6 and analytical equipment is characterized in that, described high-speed dsp digital signal processing module links to each other with described electric power signal acquisition module and described dual port RAM module.
9. electric energy quality monitoring according to claim 7 and analytical equipment is characterized in that, described ARM flush bonding processor module links to each other with described dual port RAM module, described first communication interface modules and described second communication construction module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201617319U CN201440158U (en) | 2009-07-21 | 2009-07-21 | Power quality monitoring and analyzing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201617319U CN201440158U (en) | 2009-07-21 | 2009-07-21 | Power quality monitoring and analyzing device |
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| CN201440158U true CN201440158U (en) | 2010-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009201617319U Expired - Fee Related CN201440158U (en) | 2009-07-21 | 2009-07-21 | Power quality monitoring and analyzing device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445620A (en) * | 2011-11-21 | 2012-05-09 | 东北大学 | Transient power quality detection device and method for the same |
| WO2012059061A1 (en) * | 2010-11-04 | 2012-05-10 | 武汉国测恒通智能仪器有限公司 | Method and device for quality-monitoring of high-voltage electrical energy |
| CN102479282A (en) * | 2010-11-23 | 2012-05-30 | 上海市电力公司 | Calculation method for voltage deviation in steady-state indicator of power quality |
| CN102778634A (en) * | 2012-07-11 | 2012-11-14 | 福建省电力有限公司电力科学研究院 | Distribution network voltage fluctuation positioning method and device |
| CN103018582A (en) * | 2011-09-28 | 2013-04-03 | 南京丹迪克科技开发有限公司 | Power quality monitoring system |
| CN103135019A (en) * | 2013-02-04 | 2013-06-05 | 江苏大学 | Power quality monitoring management system based on electric power wide-area network |
| CN103457297A (en) * | 2013-07-12 | 2013-12-18 | 武汉大学 | Closed-loop control method for achieving active power adjustment by introducing frequency deviation feedback to have control over voltage |
| CN103630778A (en) * | 2013-11-22 | 2014-03-12 | 中国电子科技集团公司第三十八研究所 | Module for quickly collecting three-phase electrical parameters |
| CN104459387A (en) * | 2014-11-25 | 2015-03-25 | 浙江工业大学 | Movable handheld type electric energy quality parameter routing inspection system |
| CN105159254A (en) * | 2015-08-18 | 2015-12-16 | 国家电网公司 | Power grid automation management remote terminal control system |
| CN105242147A (en) * | 2015-11-02 | 2016-01-13 | 国网山东昌乐县供电公司 | Low-voltage distribution power parameter monitoring device |
| CN106058854A (en) * | 2016-06-02 | 2016-10-26 | 国网天津市电力公司 | Method for evaluating current three-phase unbalance degree of distribution network |
-
2009
- 2009-07-21 CN CN2009201617319U patent/CN201440158U/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012059061A1 (en) * | 2010-11-04 | 2012-05-10 | 武汉国测恒通智能仪器有限公司 | Method and device for quality-monitoring of high-voltage electrical energy |
| CN102479282A (en) * | 2010-11-23 | 2012-05-30 | 上海市电力公司 | Calculation method for voltage deviation in steady-state indicator of power quality |
| CN103018582A (en) * | 2011-09-28 | 2013-04-03 | 南京丹迪克科技开发有限公司 | Power quality monitoring system |
| CN102445620B (en) * | 2011-11-21 | 2014-04-30 | 东北大学 | Transient power quality detection device and method for the same |
| CN102445620A (en) * | 2011-11-21 | 2012-05-09 | 东北大学 | Transient power quality detection device and method for the same |
| CN102778634B (en) * | 2012-07-11 | 2014-12-10 | 福建省电力有限公司电力科学研究院 | Distribution network voltage fluctuation positioning method and device |
| CN102778634A (en) * | 2012-07-11 | 2012-11-14 | 福建省电力有限公司电力科学研究院 | Distribution network voltage fluctuation positioning method and device |
| CN103135019A (en) * | 2013-02-04 | 2013-06-05 | 江苏大学 | Power quality monitoring management system based on electric power wide-area network |
| CN103457297A (en) * | 2013-07-12 | 2013-12-18 | 武汉大学 | Closed-loop control method for achieving active power adjustment by introducing frequency deviation feedback to have control over voltage |
| CN103457297B (en) * | 2013-07-12 | 2015-11-18 | 武汉大学 | Pull-in frequency deviation feedback control voltage realizes the meritorious closed loop control method regulated |
| CN103630778B (en) * | 2013-11-22 | 2016-01-20 | 中国电子科技集团公司第三十八研究所 | Three phase electrical parameters Quick Acquisition module |
| CN103630778A (en) * | 2013-11-22 | 2014-03-12 | 中国电子科技集团公司第三十八研究所 | Module for quickly collecting three-phase electrical parameters |
| CN104459387A (en) * | 2014-11-25 | 2015-03-25 | 浙江工业大学 | Movable handheld type electric energy quality parameter routing inspection system |
| CN105159254A (en) * | 2015-08-18 | 2015-12-16 | 国家电网公司 | Power grid automation management remote terminal control system |
| CN105242147A (en) * | 2015-11-02 | 2016-01-13 | 国网山东昌乐县供电公司 | Low-voltage distribution power parameter monitoring device |
| CN106058854A (en) * | 2016-06-02 | 2016-10-26 | 国网天津市电力公司 | Method for evaluating current three-phase unbalance degree of distribution network |
| CN106058854B (en) * | 2016-06-02 | 2019-01-15 | 国网天津市电力公司 | A kind of evaluation method of distribution current three-phase degree of unbalancedness |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100421 Termination date: 20100721 |