CN202975193U - Novel power quality monitor - Google Patents
Novel power quality monitor Download PDFInfo
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- CN202975193U CN202975193U CN 201220641239 CN201220641239U CN202975193U CN 202975193 U CN202975193 U CN 202975193U CN 201220641239 CN201220641239 CN 201220641239 CN 201220641239 U CN201220641239 U CN 201220641239U CN 202975193 U CN202975193 U CN 202975193U
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- signal acquisition
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Abstract
The utility model discloses a novel power quality monitor, and belongs to the field of a measuring instrument. The novel power quality monitor comprises a power source, a signal acquisition module, a central processing module, a man-machine interface module, a data output module and a data storage module, wherein the signal acquisition module is connected with the central processing module, the central processing module is respectively connected with a communication module, the man-machine interface module and the data storage module, the power source provides work power supply for the modules, external voltage signals are collected by the signal acquisition module to form sampling signals, the sampling signals are transmitted to the central processing module, and the signal acquisition module is provided with divider resistors with different resistance values. As long as the power source with different voltage levels is connected with a corresponding wiring position in an external interface, the power quality monitor can be converted to monitor the different voltage levels, thereby improving the work efficiency, saving labor cost and reducing possible safety hidden troubles.
Description
Technical field
The utility model belongs to the gauging instrument field, relates to more precisely a kind of electric energy quality monitor.
Background technology
The technology of " Power Quality " that the IEEE technology coordination committee provides is defined as: " the qualified quality of power supply be show electric power that sensitive equipment provides and the earthed system of setting is fit to this equipment normal operation ".The height of the quality of power supply, oneself becomes the key factor that affects the national economic development. and therefore, improving the quality of power supply, to improve the monitoring of electrical network significant to modern society.
In actual distribution and electric power system, the main index of the quality of power supply is: voltage magnitude, frequency, harmonic content.Quality of power supply harm be mainly reflected in the closely-related distribution system of user and secondary network (400 V) in, fall as voltage the equipment mistrip that problem causes; The short supply interruption phenomenon causes number of computer servers according to loss; Harmonic problem causes the undesired heating of subscriber equipment etc.
Along with power industry is measured iterative method with robotization, intellectuality and the networking of management, high and day by day strong with the demand of the electric energy quality monitor device of analytic function to precision.At present, have the electric energy quality monitor device of measuring with the various power quality parameters of analyzing input plurality of voltages, electric current, be used widely.
Yet, existing electric energy quality monitor device in use still has numerous inconvenience, when particularly the power supply of different electric pressures being monitored, often need to open tool housing to realize the conversion of different electric pressures, both reduce work efficiency, increased cost of labor, also brought simultaneously certain potential safety hazard.
Summary of the invention
Need to open the deficiency of tool housing when the different electric pressure of conversion for electric energy quality monitor device in prior art, the utility model proposes a kind of New Monitor of Power Quality, this New Monitor of Power Quality need not to open the conversion that tool housing can be realized different electric pressures, thereby realizes quickly and easily the monitoring to the power supply of different electric pressures.
specifically, the utility model is to take following technical scheme to realize: a kind of New Monitor of Power Quality, comprise power supply, signal acquisition module, central processing module, human-machine interface module, data outputting module, data memory module, wherein signal acquisition module is connected with central processing module, central processing module respectively with communication module, human-machine interface module and data memory module are connected, power supply is used for providing the working power of each module, external voltage signal forms sampled signal and is input to central processing module after the signal acquisition module collection, being provided with resistance in described signal acquisition module is the first divider resistance of 120k Ω, resistance is the second divider resistance of 85k Ω, resistance is the 3rd divider resistance of 72k Ω, transformer, sampling resistor and external interface, the first divider resistance, after connecting mutually, the second divider resistance and the 3rd divider resistance be connected with the former limit of transformer, the secondary access sampling resistor of transformer, the external voltage signal of 380V utilizes the first divider resistance by external interface, the second divider resistance and the 3rd divider resistance carry out dividing potential drop, the external voltage signal of 220V utilizes the second divider resistance and the 3rd divider resistance to carry out dividing potential drop by external interface, the external voltage signal of 100V utilizes the 3rd divider resistance to carry out dividing potential drop by external interface, sampling resistor is used for providing sampled signal to central processing module.
The utility model is further characterized in that: described signal acquisition module also is provided with inductance, and inductance is serially connected in the former limit of transformer.
The utility model is further characterized in that: the sense value of described inductance (L1) is 1mH.
The beneficial effects of the utility model are as follows: the utility model is provided with the divider resistance of three different resistances and is connected with same external interface in signal acquisition module.Therefore when the power supply of different electric pressures is monitored, only need should the difference electric pressure power supply and external interface in corresponding wiring position be connected and can realize the conversion that the different electric pressures of electric energy quality monitor are monitored, need not to open the shell process operation of electric energy quality monitor, thereby improved work efficiency, saved human cost, reduced simultaneously the potential safety hazard that may exist.
Description of drawings
Fig. 1 is the utility model basic structure block diagram.
Fig. 2 is the utility model signal acquisition module schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
Fig. 1 has provided basic structure of the present utility model.As shown in Figure 1, electric energy quality monitor of the present utility model, comprise power supply, signal acquisition module, central processing module, human-machine interface module, data outputting module, data memory module, wherein signal acquisition module is connected with central processing module, central processing module is connected with communication module, human-machine interface module and data memory module respectively, power supply is used for providing the working power of each module, and external voltage signal forms sampled signal and is input to central processing module after the signal acquisition module collection.
Fig. 2 has provided the utility model signal acquisition module principle.As shown in Figure 2, in order to realize need not to open the function that tool housing is convertible different electric pressures, electric energy quality monitor of the present utility model, the first divider resistance R1, the resistance that is provided with resistance and is 120k Ω in signal acquisition module are that the second divider resistance R2, the resistance of 85k Ω is the 3rd divider resistance R3, transformer PT, sampling resistor R4 and the external interface J1 of 72k Ω.
Wherein, after connecting mutually, the first divider resistance R1, the second divider resistance R2 and the 3rd divider resistance R3 be connected with the former limit of transformer PT, the secondary access sampling resistor R4 of transformer PT, and sampling resistor R4 is used for providing sampled signal to central processing module.Different wiring position in external interface J1 is connected respectively to three divider resistances.
During concrete the use, for the external power source of different electric pressures, only need be connected in external interface J1 corresponding wiring position and carry out dividing potential drop by different divider resistances, just can realize easily the conversion of the different electric pressures of electric energy quality monitor.The external voltage signal that is 380V utilizes the first divider resistance R1, the second divider resistance R2 and the 3rd divider resistance R3 to carry out dividing potential drop by external interface J1, the external voltage signal of 220V utilizes the second divider resistance R2 and the 3rd divider resistance R3 to carry out dividing potential drop by external interface J1, and the external voltage signal of 100V utilizes the 3rd divider resistance R3 to carry out dividing potential drop by external interface J1.
In addition, in order to realize better signals collecting quality, can also inductance L 1 be set with the filtering high-frequency signal in above-mentioned signal acquisition module, inductance L 1 is serially connected in the former limit of transformer PT.Inductance L 1 sense value can be 1mH.
Although the utility model is with preferred embodiment openly as above, embodiment be not limit of the present utility model.In the spirit and scope that do not break away from the utility model, any equivalence of doing changes or retouching, belongs to equally the protection domain of the utility model.Therefore protection domain of the present utility model should be take the application's the content that claim was defined as standard.
Claims (3)
1. New Monitor of Power Quality, comprise power supply, signal acquisition module, central processing module, human-machine interface module, data outputting module, data memory module, wherein signal acquisition module is connected with central processing module, central processing module respectively with communication module, human-machine interface module and data memory module are connected, power supply is used for providing the working power of each module, external voltage signal forms sampled signal and is input to central processing module after the signal acquisition module collection, it is characterized in that: described signal acquisition module is provided with the first divider resistance (R1) that resistance is 120k Ω, resistance is the second divider resistance (R2) of 85k Ω, resistance is the 3rd divider resistance (R3) of 72k Ω, transformer (PT), sampling resistor (R4) and external interface (J1), the first divider resistance (R1), the second divider resistance (R2) and the 3rd divider resistance (R3) are connected with the former limit of transformer (PT) after series connection mutually, the secondary access sampling resistor (R4) of transformer (PT), the external voltage signal of 380V utilizes the first divider resistance (R1) by external interface (J1), the second divider resistance (R2) and the 3rd divider resistance (R3) carry out dividing potential drop, the external voltage signal of 220V utilizes the second divider resistance (R2) and the 3rd divider resistance (R3) to carry out dividing potential drop by external interface (J1), the external voltage signal of 100V utilizes the 3rd divider resistance (R3) to carry out dividing potential drop by external interface (J1), sampling resistor (R4) is used for providing sampled signal to central processing module.
2. a kind of New Monitor of Power Quality according to claim 1, it is characterized in that: described signal acquisition module also is provided with inductance (L1), and inductance (L1) is serially connected in the former limit of transformer (PT).
3. a kind of New Monitor of Power Quality according to claim 2, it is characterized in that: the sense value of described inductance (L1) is 1mH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220641239 CN202975193U (en) | 2012-11-29 | 2012-11-29 | Novel power quality monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220641239 CN202975193U (en) | 2012-11-29 | 2012-11-29 | Novel power quality monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202975193U true CN202975193U (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220641239 Expired - Fee Related CN202975193U (en) | 2012-11-29 | 2012-11-29 | Novel power quality monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202975193U (en) |
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2012
- 2012-11-29 CN CN 201220641239 patent/CN202975193U/en not_active Expired - Fee Related
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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: 20130605 Termination date: 20131129 |