CN104678200A - Monitoring device for regional power quality - Google Patents
Monitoring device for regional power quality Download PDFInfo
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- CN104678200A CN104678200A CN201310626812.2A CN201310626812A CN104678200A CN 104678200 A CN104678200 A CN 104678200A CN 201310626812 A CN201310626812 A CN 201310626812A CN 104678200 A CN104678200 A CN 104678200A
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- dsp
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- monitoring
- power quality
- monitoring device
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Abstract
The invention discloses a monitoring device for regional power quality. The monitoring device comprises a current transformer, a voltage transformer, an A/D (analogue/digital) convertor, a DSP (digital signal processor), an input key, a liquid crystal display and an audible and visual alarm; the external input key is connected with the DSP, and is used for setting a safety threshold for monitoring voltage and current; one side of the voltage transformer and one side of the current transformer are connected with a grid, and the other end of the voltage transformer and the other side of the current transformer are connected with the A/D converter; after being converted into a digital signal, an analogue signal is transmitted to the DSP; the DSP is used for analyzing monitored data, and the monitored data is displayed in real time through the liquid crystal display; after the monitored data exceeds the threshold, the audible and visual alarm gives an alarm for prompt.
Description
Art
The present invention relates to energy monitor technology, be specifically related to a kind of region equipment for monitoring power quality.
Background technology
The leading indicator of the quality of power supply has voltage, frequency and waveform.Refer to quality supply from universal significance, comprise quality of voltage, current quality, power supply quality and power quality.It can be defined as: the deviation causing the voltage of consumer fault or cisco unity malfunction, electric current or frequency, and its content comprises frequency departure, voltage deviation, voltage fluctuation and flicker, three-phase imbalance, instantaneous or transient overvoltage, wave form distortion, voltage dip, interruption, temporary liter and power supply continuity etc.
Electric power is as a kind of energy indispensable in national economy, the height of a national quality of power supply level directly governs the living standard of a national level of economic development and the people, along with the continuous appearance with power electronic equipment that improves constantly of scientific and technological level, the height of the quality of power supply has become the subject matter of restriction production run, is badly in need of being resolved.Voltage unbalance, superpotential and under-voltage all may cause the malfunction of consumer, may cause very large loss time serious.
Summary of the invention
Monitoring automation degree for the current subregion quality of power supply is high not enough, the present invention proposes a kind of SCM Based region equipment for monitoring power quality, this apparatus structure is simple, and convenient management, can realize the monitoring of the voltage and current quality to regional power grid power supply.
To achieve these goals, the technical solution adopted in the present invention is: a kind of region equipment for monitoring power quality, comprising: current transformer, voltage transformer (VT), A/D transducer, DSP, input key, LCDs and audible-visual annunciator.The secure threshold of input key setting voltage and current monitoring, voltage transformer (VT) converts the high voltage of electrical network to low-voltage, DSP TMS320F2812 is transferred to after A/D A-D converter, current transformer detection of grid is in load running situation, the fluctuation situation of electric current, also DSP TMS320F2812 is transferred to after A/D A-D converter, LCDs shows line voltage and the current parameters of DSP monitoring in real time, when exceeding setting alarm threshold value, audible-visual annunciator can carry out alarm, whole apparatus structure is simply clear, control arranges flexibly, reliability is high.
Effective effect of the present invention is, achieves a kind of region equipment for monitoring power quality, and device controls flexibly, and cost is low, easy care, and reliability is high.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is system construction drawing of the present invention.
Embodiment
In FIG, a kind of region equipment for monitoring power quality, comprising: current transformer, voltage transformer (VT), A/D transducer, DSP, input key, LCDs and audible-visual annunciator.Outside input key connects DSP, the secure threshold of setting monitoring voltage, electric current, the side of voltage transformer (VT) connects electrical network, opposite side connects A/D transducer 1, DSP is transferred to after simulating signal being converted to digital signal, the side of current transformer connects electrical network, opposite side connects A/D transducer 2, DSP is transferred to after simulating signal being converted to digital signal, DSP analyzes Monitoring Data, and shown in real time by LCDs, after the data monitored exceed threshold value, audible-visual annunciator carries out alarm.
Claims (2)
1. a region equipment for monitoring power quality, outside input key connects DSP, the secure threshold of setting monitoring voltage, electric current, the side of voltage, current transformer connects electrical network, and opposite side connects A/D transducer, is transferred to DSP after simulating signal being converted to digital signal, DSP analyzes Monitoring Data, and shown in real time by LCDs, after the data monitored exceed threshold value, audible-visual annunciator carries out alarm.
2. a kind of region equipment for monitoring power quality according to claim 1, is characterized in that the model that DSP adopts is TMS320F2812.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310626812.2A CN104678200A (en) | 2013-11-26 | 2013-11-26 | Monitoring device for regional power quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310626812.2A CN104678200A (en) | 2013-11-26 | 2013-11-26 | Monitoring device for regional power quality |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104678200A true CN104678200A (en) | 2015-06-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310626812.2A Pending CN104678200A (en) | 2013-11-26 | 2013-11-26 | Monitoring device for regional power quality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104678200A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884575A (en) * | 2019-03-30 | 2019-06-14 | 哈尔滨理工大学 | A kind of single-phase electrical appliance research and application system |
| CN110347080A (en) * | 2019-07-05 | 2019-10-18 | 上海矽杰微电子有限公司 | A kind of millimeter wave inductive switch circuit |
-
2013
- 2013-11-26 CN CN201310626812.2A patent/CN104678200A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884575A (en) * | 2019-03-30 | 2019-06-14 | 哈尔滨理工大学 | A kind of single-phase electrical appliance research and application system |
| CN110347080A (en) * | 2019-07-05 | 2019-10-18 | 上海矽杰微电子有限公司 | A kind of millimeter wave inductive switch circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |