CN203502471U - Integrated electrical parameter detection circuit for monitoring terminal - Google Patents
Integrated electrical parameter detection circuit for monitoring terminal Download PDFInfo
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- CN203502471U CN203502471U CN201320628053.9U CN201320628053U CN203502471U CN 203502471 U CN203502471 U CN 203502471U CN 201320628053 U CN201320628053 U CN 201320628053U CN 203502471 U CN203502471 U CN 203502471U
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Abstract
The utility model relates to an integrated electrical parameter detection circuit. The integrated electrical parameter detection circuit for a monitoring terminal comprises an electrical parameter signal acquisition unit, a signal pre-processing and conversion unit and a single chip microcomputer system circuit; a voltage signal acquisition circuit carries out resistance voltage reduction and shaping on three-phase alternating current, outputs voltage signals and is then connected with the signal pre-processing and conversion unit; a current signal and three-phase unbalanced current signal acquisition circuit adopts current transformer coupling and comparator conversion circuit; output of the signal pre-processing and conversion unit and a converter are connected with the single chip microcomputer system circuit; and the single chip microcomputer system circuit controls and calculates voltage signals, current signals and three-phase unbalanced current signals and outputs the signals to a lower-grade circuit. With the integrated electrical parameter detection circuit for a monitoring terminal, parameters such as the voltage signals, the current signals and the three-phase unbalanced current signals can be analyzed, calculated and uploaded, and an auxiliary role can be played on realization of power distribution system automation control.
Description
Technical field
The utility model relates to a kind of integrated electric parameter detecting circuit, is used in the monitor terminal that power distribution network adopts Long-distance Control, realizes the processing of electrical quantity data.
Background technology
Along with developing rapidly of power industry, the process that distribution system automation is controlled is progressively accelerated.The research of distribution system automation control technology, to improving power supply quality, reduces energy resource consumption, and energy-saving and emission-reduction etc., have the proposition of the positive new problem of meaning intelligent power network, also distribution network automated opertaing device are had higher requirement simultaneously.Especially intelligent monitoring terminal plays especially vital effect in distribution system.And can the operation characteristic of monitor terminal reach the most perfect monitor state, depend on the integrated electric parameter detecting circuit of monitor terminal.
In reality, the difference of the integrated electric parameter detecting circuit of such remote monitoring terminal, has conclusive impact to the operation characteristic of monitor terminal really.For better, to guarantee the operation characteristic of remote monitoring terminal, make it bring into play its due effect, be a kind ofly more tending towards desirable electrical parameters detection technical solution and be absolutely necessary.
Utility model content
The utility model is for the deficiencies in the prior art, propose a kind of economical and practical, easy to use, operation characteristic is desirable, be suitable for the integrated electric parameter detecting circuit that distribution network monitoring terminal is used.
To achieve these goals, the technical scheme that the utility model adopts is:
A kind of monitor terminal integrated electric parameter detecting circuit, comprise electrical quantity signal gathering unit, Signal Pretreatment and converting unit and microcontroller system circuit, described electrical quantity signal gathering unit comprises voltage signal acquisition circuit, current signal Acquisition Circuit and three-phase imbalance current signal Acquisition Circuit, described voltage signal acquisition circuit is by A, B, C three-phase alternating current is through resistance step-down, output voltage signal after shaping, then be connected to Signal Pretreatment and converting unit, described current signal and three-phase imbalance current signal Acquisition Circuit comprise current transformer and converter, current transformer coupling output access converter, output is connected microcontroller system circuit with converter for described Signal Pretreatment and converting unit, by microcontroller system circuit, control and calculate voltage signal, current signal, three-phase imbalance current signal also outputs to next stage circuit.
Described voltage signal acquisition circuit is by A, B, C three-phase alternating current is output voltage signal after resistance step-down, through repeating resistance, be connected to voltage signal output end, at described voltage signal output end, be parallel with two pull-up resistor R3, R4, and two shaping capacitance C1, C2, from described two pull-up resistor R3, the connected node of R4 is drawn reference voltage signal REFO and is connected integrated electric parameter detecting element circuit corresponding ports, from described two shaping capacitance C1, the connected node of C2 is drawn the earth terminal that ground signalling END connects Signal Pretreatment and conversion unit circuit, described three-phase voltage signal output terminal VP, VN accesses respectively the input end of Signal Pretreatment and conversion unit circuit.
Described monitor terminal integrated electric parameter detecting circuit, Signal Pretreatment and conversion unit circuit adopt electric parameter measurement integrated circuit (IC) chip, the voltage signal that collecting unit sampling is obtained is analyzed, is calculated, electric parameter measurement integrated circuit (IC) chip computing parameters obtained access microcontroller system circuit.
Described monitor terminal integrated electric parameter detecting circuit, it is characterized in that: microcontroller system circuit comprises core processor and peripheral circuit, microcontroller system circuit is controlled and is calculated voltage signal, current signal, three-phase imbalance current signal and export by communication module.
The useful good effect of utility model:
1, the utility model monitor terminal integrated electric parameter detecting circuit, simple in structure, integrated level is high, easy to use.The parameters such as the voltage signal of collection, current signal, three-phase imbalance current signal can be analyzed, calculated, for realizing distribution system automation, control the booster action that will play the integrated electrical parameters detection circuit part of distribution network monitoring terminal function.
2, the utility model monitor terminal integrated electric parameter detecting circuit, design science, rationally, it is economical, convenient to use, and easily promotes, can be comparatively economical, desirable for monitor terminal provides a kind of electrical parameters detection, realize circuit, operation characteristic is desirable.
Accompanying drawing explanation
Fig. 1: the utility model monitor terminal integrated electric parameter detecting circuital current signal acquisition circuit;
Fig. 2: the utility model monitor terminal integrated electric parameter detecting circuit voltage signal acquisition circuit;
Fig. 3: the utility model monitor terminal integrated electric parameter detecting circuit signal pretreatment unit circuit;
Fig. 4: the utility model monitor terminal integrated electric parameter detecting circuit microcontroller system circuit.
Embodiment
Below by embodiment, the technical solution of the utility model is described in further detail.
embodiment 1
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4.The utility model monitor terminal integrated electric parameter detecting circuit, comprise electrical quantity signal gathering unit, Signal Pretreatment and converting unit and microcontroller system circuit, described electrical quantity signal gathering unit comprises voltage signal acquisition circuit, current signal Acquisition Circuit and three-phase imbalance current signal Acquisition Circuit, described voltage signal acquisition circuit is by A, B, C three-phase alternating current is through resistance step-down, output voltage signal after shaping, then be connected to Signal Pretreatment and converting unit, described current signal and three-phase imbalance current signal Acquisition Circuit comprise current transformer and converter, current transformer coupling output access converter, output is connected microcontroller system circuit with converter for described Signal Pretreatment and converting unit, by microcontroller system circuit, control and calculate voltage signal, current signal, three-phase imbalance current signal also outputs to next stage circuit.
Described voltage signal acquisition circuit is by A, B, C three-phase alternating current is output voltage signal after resistance step-down, through repeating resistance, be connected to voltage signal output end, at described voltage signal output end, be parallel with two pull-up resistor R3, R4, and two shaping capacitance C1, C2, from described two pull-up resistor R3, the connected node of R4 is drawn reference voltage signal REFO and is connected integrated electric parameter detecting element circuit corresponding ports, from described two shaping capacitance C1, the connected node of C2 is drawn the earth terminal that ground signalling END connects Signal Pretreatment and conversion unit circuit, described three-phase voltage signal output terminal VP, VN accesses respectively the input end of Signal Pretreatment and conversion unit circuit.
Signal Pretreatment and conversion unit circuit adopt electric parameter measurement integrated circuit (IC) chip, and the voltage signal that collecting unit sampling is obtained is analyzed, calculated, and by the electrical quantity data access microcontroller system circuit of computing gained.
Described microcontroller system circuit comprises core processor and peripheral circuit, and microcontroller system circuit is controlled and calculated voltage signal, current signal, three-phase imbalance current signal and output to next stage circuit by communication module.
Claims (4)
1. a monitor terminal integrated electric parameter detecting circuit, comprise electrical quantity signal gathering unit, Signal Pretreatment and converting unit and microcontroller system circuit, described electrical quantity signal gathering unit comprises voltage signal acquisition circuit, current signal Acquisition Circuit and three-phase imbalance current signal Acquisition Circuit, it is characterized in that: described voltage signal acquisition circuit is by A, B, C three-phase alternating current is through resistance step-down, output voltage signal after shaping, then be connected to Signal Pretreatment and converting unit, described current signal and three-phase imbalance current signal Acquisition Circuit comprise current transformer and converter, current transformer coupling output access converter, output is connected microcontroller system circuit with converter for described Signal Pretreatment and converting unit, by microcontroller system circuit, control and calculate voltage signal, current signal, three-phase imbalance current signal also outputs to next stage circuit.
2. monitor terminal integrated electric parameter detecting circuit according to claim 1, it is characterized in that: Signal Pretreatment and conversion unit circuit adopt electric parameter measurement integrated circuit (IC) chip, the voltage signal that collecting unit sampling is obtained is analyzed, is calculated, and then accesses microcontroller system circuit.
3. monitor terminal integrated electric parameter detecting circuit according to claim 2, it is characterized in that: microcontroller system circuit comprises core processor and peripheral circuit, microcontroller system circuit is controlled and is calculated voltage signal, current signal, three-phase imbalance current signal and export by communication module.
4. according to claim 1, monitor terminal integrated electric parameter detecting circuit described in 2 or 3, it is characterized in that: described voltage signal acquisition circuit is by A, B, C three-phase alternating current is output voltage signal after resistance step-down, through repeating resistance, be connected to voltage signal output end, at described voltage signal output end, be parallel with two pull-up resistor R3, R4, and two shaping capacitance C1, C2, from described two pull-up resistor R3, the connected node of R4 is drawn reference voltage signal REFO and is connected integrated electric parameter detecting element circuit corresponding ports, from described two shaping capacitance C1, the connected node of C2 is drawn the earth terminal that ground signalling END connects Signal Pretreatment and conversion unit circuit, described three-phase voltage signal output terminal VP, VN accesses respectively the input end of Signal Pretreatment and conversion unit circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320628053.9U CN203502471U (en) | 2013-10-12 | 2013-10-12 | Integrated electrical parameter detection circuit for monitoring terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320628053.9U CN203502471U (en) | 2013-10-12 | 2013-10-12 | Integrated electrical parameter detection circuit for monitoring terminal |
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| Publication Number | Publication Date |
|---|---|
| CN203502471U true CN203502471U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320628053.9U Expired - Fee Related CN203502471U (en) | 2013-10-12 | 2013-10-12 | Integrated electrical parameter detection circuit for monitoring terminal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529266A (en) * | 2013-10-12 | 2014-01-22 | 河南开启电力实业有限公司 | Integrated electrical parameter detection circuit for monitoring terminal |
| CN104065166A (en) * | 2014-06-26 | 2014-09-24 | 河南开启电力实业有限公司 | Integrated end power using supervision and monitoring system |
-
2013
- 2013-10-12 CN CN201320628053.9U patent/CN203502471U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529266A (en) * | 2013-10-12 | 2014-01-22 | 河南开启电力实业有限公司 | Integrated electrical parameter detection circuit for monitoring terminal |
| CN104065166A (en) * | 2014-06-26 | 2014-09-24 | 河南开启电力实业有限公司 | Integrated end power using supervision and monitoring system |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20161012 |