CN202956431U - CVT embedded power grid voltage harmonic wave monitoring system - Google Patents
CVT embedded power grid voltage harmonic wave monitoring system Download PDFInfo
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- CN202956431U CN202956431U CN 201220510071 CN201220510071U CN202956431U CN 202956431 U CN202956431 U CN 202956431U CN 201220510071 CN201220510071 CN 201220510071 CN 201220510071 U CN201220510071 U CN 201220510071U CN 202956431 U CN202956431 U CN 202956431U
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- harmonic wave
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Abstract
The utility model discloses a CVT embedded power grid voltage harmonic wave monitoring system comprising a CVT voltage signal emitter, an isolation sensor, a signal conditioner, a one-chip microcomputer, a communication interface, a real-time clock circuit and a data memorizer. The signal output end of the CVT voltage signal emitter is connected with the voltage signal input end of the isolation sensor, the voltage signal output end of the isolation sensor is connected with the voltage signal input end of the signal conditioner, and the signal output end of the signal conditioner is connected with the signal input end of the one-chip microcomputer; the communication port of the one-chip microcomputer is connected with the inner end of the communication interface, the clock port of the one-chip microcomputer is connected with the real-time clock circuit, and the storage port of the one-chip microcomputer is connected with the data memorizer. The utility model provides an embedded harmonic wave monitoring apparatus, which is integrated with a voltage transformer, is very convenient to monitor the harmonic wave at each point of a power grid, promotes a harmonic wave treatment engineering, and enables the electric energy quality of the power grid to be improved.
Description
Technical field
The utility model relates to a kind of Power Network Voltage Monitor System, relates in particular to a kind of CVT Voltage Harmonic Supervision System Embedded.
Background technology
Develop rapidly along with modern power electronics technology, especially near power electronic equipment being widely used in electric system, each industrial sector and household electric appliances during the last ten years, cause a large amount of harmonic wave to inject electrical network, caused sharply rising and the decline of the quality of power supply of harmonic content in the electrical network.Harmonic wave even injures the safety of electric system sometimes, to national economy, brings heavy losses.Meanwhile, the precision equipment of various complexity is very responsive to the quality of power supply, so power department and user have proposed urgent requirement to the improvement of harmonic wave.
Oneself has many manufacturer production harmonic wave testers both at home and abroad, but these instruments have following shortcoming: (1) price is higher; (2) laboratory or use out of doors, be applicable to scientific research, short-term power test, electrical network is patrolled and examined or monitoring temporarily, can not Real-Time Monitoring; (3) the independent special test equipment used, personal management and use, more single.Yet, due to the popularity of electrical network and the ubiquity of harmonic wave, above instrument is difficult to meet the requirement of harmonic wave control.
Summary of the invention
The purpose of this utility model provides a kind of CVT Voltage Harmonic Supervision System Embedded that can improve the quality of power supply of electrical network with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises CVT voltage signal transmitter, isolation sensor, signal conditioner, single-chip microcomputer, communication interface, real time clock circuit and data storage, the signal output part of described CVT voltage signal transmitter is connected with the voltage signal input end of described isolation sensor, the voltage signal output end of described isolation sensor is connected with the voltage signal input end of described signal conditioner, the signal output part of described signal conditioner is connected with the signal input part of described single-chip microcomputer, the PORT COM of described single-chip microcomputer is connected with the inner of described communication interface, the clock port of described single-chip microcomputer is connected with described real time clock circuit, the storage port of described single-chip microcomputer is connected with described data storage.
The beneficial effects of the utility model are:
The utility model provides a kind of Embedded Harmonics monitoring instrument, integrated with voltage transformer (VT), greatly facilitates the monitoring of electrical network each point harmonic wave, promotes the harmonic wave control engineering, improves the quality of power supply of electrical network.
The accompanying drawing explanation
Fig. 1 is the structured flowchart of CVT Voltage Harmonic Supervision System Embedded described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1: the utility model comprises CVT voltage signal transmitter, isolation sensor, signal conditioner, single-chip microcomputer, communication interface, real time clock circuit and data storage, the signal output part of described CVT voltage signal transmitter is connected with the voltage signal input end of described isolation sensor, the voltage signal output end of described isolation sensor is connected with the voltage signal input end of described signal conditioner, the signal output part of described signal conditioner is connected with the signal input part of described single-chip microcomputer, the PORT COM of described single-chip microcomputer is connected with the inner of described communication interface, the clock port of described single-chip microcomputer is connected with described real time clock circuit, the storage port of described single-chip microcomputer is connected with described data storage.
In the utility model, real time clock circuit is mainly used in integral point statistics and day statistics of monitor data, interocclusal record while also for measurement data, providing corresponding simultaneously.
Data storage mainly realizes the sampling to tested mains voltage signal, the result of sampling stored, and data carried out to respective handling, thus the effective value of acquisition voltage and THD value etc.Judge that whether voltage harmonic is out-of-limit simultaneously, out-of-limit if harmonic wave occurs, out-of-limit waveform is stored.
Communication interface mainly realizes monitor and PC data transmission, can realize by wired and wireless two kinds of modes the transmission of data.Meet the needs of communicating by letter of wireless operated device and monitoring instrument simultaneously.
Claims (1)
1. a CVT Voltage Harmonic Supervision System Embedded, it is characterized in that: comprise CVT voltage signal transmitter, isolation sensor, signal conditioner, single-chip microcomputer, communication interface, real time clock circuit and data storage, the signal output part of described CVT voltage signal transmitter is connected with the voltage signal input end of described isolation sensor, the voltage signal output end of described isolation sensor is connected with the voltage signal input end of described signal conditioner, the signal output part of described signal conditioner is connected with the signal input part of described single-chip microcomputer, the PORT COM of described single-chip microcomputer is connected with the inner of described communication interface, the clock port of described single-chip microcomputer is connected with described real time clock circuit, the storage port of described single-chip microcomputer is connected with described data storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220510071 CN202956431U (en) | 2012-10-08 | 2012-10-08 | CVT embedded power grid voltage harmonic wave monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220510071 CN202956431U (en) | 2012-10-08 | 2012-10-08 | CVT embedded power grid voltage harmonic wave monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202956431U true CN202956431U (en) | 2013-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220510071 Expired - Fee Related CN202956431U (en) | 2012-10-08 | 2012-10-08 | CVT embedded power grid voltage harmonic wave monitoring system |
Country Status (1)
| Country | Link |
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| CN (1) | CN202956431U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103713183A (en) * | 2012-10-08 | 2014-04-09 | 四川金信石信息技术有限公司 | CVT embedded power-grid voltage harmonic-wave monitoring system |
-
2012
- 2012-10-08 CN CN 201220510071 patent/CN202956431U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103713183A (en) * | 2012-10-08 | 2014-04-09 | 四川金信石信息技术有限公司 | CVT embedded power-grid voltage harmonic-wave monitoring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130529 Termination date: 20131008 |