CN203502484U - Abnormal overvoltage online detection device - Google Patents
Abnormal overvoltage online detection device Download PDFInfo
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- CN203502484U CN203502484U CN201320628056.2U CN201320628056U CN203502484U CN 203502484 U CN203502484 U CN 203502484U CN 201320628056 U CN201320628056 U CN 201320628056U CN 203502484 U CN203502484 U CN 203502484U
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- 230000002159 abnormal effect Effects 0.000 title claims abstract description 30
- 238000001514 detection method Methods 0.000 title claims abstract description 15
- 238000007493 shaping process Methods 0.000 claims abstract description 9
- 238000004891 communication Methods 0.000 claims description 12
- 230000002457 bidirectional Effects 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 5
- 230000000875 corresponding Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000011664 signaling Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 206010069870 Device damage Diseases 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
The utility model relates to an abnormal overvoltage online detection device, which is used for abnormal voltage online detection in the power distribution system. The abnormal overvoltage online detection device comprises a voltage signal acquisition circuit, an integrated electric parameter detection unit circuit, and a single chip microcomputer system circuit; voltage reduction via a resistor is carried out on A, B and C three phases of alternating current by the voltage signal acquisition circuit and a voltage signal is outputted; two load resistors and two shaping capacitors are in parallel connection at the output end of the voltage signal; a reference voltage signal is led out from the connection node of the two load resistors, a grounding signal is led out from the connection node of the two shaping capacitors, and the reference voltage signal, the grounding signal and the three-phase voltage signal output ends VP and VN are together connected into the integrated electric parameter detection unit circuit; and the output end of the integrated electric parameter detection unit circuit is connected with the single chip microcomputer system circuit. According to the abnormal overvoltage online detection device, real-time online detection and uploading of abnormal voltage can be economically and ideally realized, and an auxiliary role can be played on automatic control on the power distribution system.
Description
Technical field
The utility model relates to a kind of voltage check device, for the abnormal voltage of distribution system, detects online.
Background technology
Along with developing rapidly of power industry, the process that distribution system automation is controlled is further accelerated.Especially in recent years the proposition of the new problem of intelligent power network, has higher requirement especially to distribution system automation control technology.And abnormal overvoltage, under-voltage can have influence on the normal use of consumer and household electrical appliance, as superpotential can be burnt consumer and household electrical appliance; Under-voltage can make consumer and household electrical appliance normally not use, and as starting of air conditioner difficulty, televisor can not normally be watched etc.This phenomenon of the failure often after accident has occurred, was just known the harm that abnormal overvoltage causes in the past.Will certainly reduce power supply quality like this, cause power supply unreliable, device damage rate is high.
Therefore, if can realize the real time on-line monitoring of power distribution network parameter, accomplishing to prevent trouble before it happens, for improving power supply quality, avoid the generation of equipment breakdown, must be of great advantage.
Utility model content
The problem proposing for background technology, the utility model proposes a kind of abnormal voltage on-line measuring device that contributes to improve power supply reliability.
To achieve these goals, the technical scheme that the utility model adopts is:
A kind of abnormal overvoltage on-line measuring device, comprise: voltage signal acquisition circuit, for the voltage signal sampling is analyzed, the integrated electric parameter detecting element circuit calculating, microcontroller system 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 integrated electric parameter detecting element circuit, described three-phase voltage signal output terminal VP, VN accesses respectively the input end of integrated electrical parameters detection element circuit, the output terminal of described integrated electric parameter detecting element circuit connects microcontroller system circuit.
Described abnormal overvoltage on-line measuring device, integrated electric parameter detecting element circuit adopts electric parameter measurement integrated circuit (IC) chip, for the voltage signal sampling is analyzed, is calculated, described microcontroller system circuit is controlled and is calculated abnormal overvoltage, under-voltage parameter and output to teletransmission unit, and integrated electric parameter detecting element circuit electrical energy pulse is isolated output by light even N1, N2.
Described abnormal overvoltage on-line measuring device, be connected with teletransmission unit with microcontroller system circuit, described teletransmission unit adopts bidirectional transmit-receive wireless communication module, single-chip microcomputer is connected with bidirectional transmit-receive wireless communication module by COM port, by described bidirectional transmit-receive wireless communication module, connects wireless communication base station or host computer early warning system.
The useful good effect of utility model:
1, the utility model distribution system abnormal voltage on-line measuring device, the real-time online of realizing abnormal voltage that can be comparatively economic, desirable detects and uploads, and it controls the booster action that will play abnormal voltage on-line monitoring partial function for realizing distribution system automation.
2, the utility model distribution system abnormal voltage on-line measuring device, reasonable in design, simple in structure, and signals collecting is accurate, stable, and it is economical, convenient to use, and operation characteristic ideal, for distribution system, contributes to improve power supply quality.
Accompanying drawing explanation
Fig. 1 is voltage signal acquisition circuit diagram described in the utility model;
Fig. 2 is electrical parameters detection element circuit schematic diagram described in the utility model;
Fig. 3 is microcontroller system circuit schematic diagram described in the utility model.
Embodiment
Below by embodiment, the technical solution of the utility model is described in further detail.
embodiment 1
Referring to Fig. 1, the utility model abnormal overvoltage on-line measuring device, comprise: voltage signal acquisition circuit, integrated electric parameter detecting element circuit, microcontroller system circuit, described voltage signal acquisition circuit is by A, B, C three-phase alternating current is output voltage signal after variable resistor VR2 step-down, and be connected to voltage signal output end VP through repeating resistance R1, at described voltage signal output end VP, between VN, 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 integrated electric parameter detecting element circuit, described three-phase voltage signal output terminal VP, VN accesses respectively the input end of integrated electrical parameters detection element circuit, the output terminal of described integrated electric parameter detecting element circuit connects microcontroller system circuit.
A described voltage signal acquisition circuit wherein road head end is connected in A phase 220V, 50Hz alternating current, through resistance R 1, R3, R4, adjustable resistance R2, after capacitor C 1, C2 step-down shaping, output is applicable to voltage signal V2P, the V2N that electrical parameters detection element circuit integrated circuit (IC) chip is measured, in like manner, another two-way voltage signal acquisition circuit takes out B phase, C phase voltage signal V4P, V4N, and V6P, V6N, access described electrical parameters detection element circuit input end.By microcontroller system circuit, control and calculate superpotential, under-voltage electrical quantity and output to teletransmission unit.
embodiment 2
Referring to Fig. 1, Fig. 2, Fig. 3.The abnormal overvoltage on-line measuring device of the present embodiment, be with the difference of embodiment 1: integrated electric parameter detecting element circuit adopts electric parameter measurement integrated circuit (IC) chip U1 as shown in Figure 2, for the voltage signal sampling is analyzed, is calculated, then access microcontroller system circuit, by described microcontroller system circuit, controlled and calculated abnormal overvoltage, under-voltage parameter and output to teletransmission unit, integrated electric parameter detecting element circuit electrical energy pulse is isolated output by light even N1, N2.
Described abnormal overvoltage on-line measuring device, be connected with teletransmission unit with microcontroller system circuit, described teletransmission unit adopts bidirectional transmit-receive wireless communication module, single-chip microcomputer is connected with bidirectional transmit-receive wireless communication module by COM port, by described bidirectional transmit-receive wireless communication module, connects wireless communication base station or host computer early warning system.
This distribution system abnormal voltage on-line measuring device comparatively economy, the desirable real-time online of realizing abnormal voltage detects and uploads, and it controls the booster action that will play abnormal voltage on-line monitoring partial function for realizing distribution system automation.
Claims (3)
1. an abnormal overvoltage on-line measuring device, comprise: voltage signal acquisition circuit, for the voltage signal sampling is analyzed, the integrated electric parameter detecting element circuit calculating, microcontroller system circuit, 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 integrated electric parameter detecting element circuit, described three-phase voltage signal output terminal VP, VN accesses respectively the input end of integrated electrical parameters detection element circuit, the output terminal of described integrated electric parameter detecting element circuit connects microcontroller system circuit.
2. abnormal overvoltage on-line measuring device according to claim 1, it is characterized in that: integrated electric parameter detecting element circuit adopts electric parameter measurement integrated circuit (IC) chip, for the voltage signal sampling is analyzed, is calculated, described microcontroller system circuit is controlled and is calculated abnormal overvoltage, under-voltage parameter and output to teletransmission unit, and integrated electric parameter detecting element circuit electrical energy pulse is isolated output by light even N1, N2.
3. abnormal overvoltage on-line measuring device according to claim 1, it is characterized in that: be connected with teletransmission unit with described microcontroller system circuit, described teletransmission unit adopts bidirectional transmit-receive wireless communication module, single-chip microcomputer is connected with bidirectional transmit-receive wireless communication module by COM port, by described bidirectional transmit-receive wireless communication module, connects wireless communication base station or host computer early warning system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320628056.2U CN203502484U (en) | 2013-10-12 | 2013-10-12 | Abnormal overvoltage online detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320628056.2U CN203502484U (en) | 2013-10-12 | 2013-10-12 | Abnormal overvoltage online detection device |
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| Publication Number | Publication Date |
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| CN203502484U true CN203502484U (en) | 2014-03-26 |
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| CN201320628056.2U Expired - Fee Related CN203502484U (en) | 2013-10-12 | 2013-10-12 | Abnormal overvoltage online detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529280A (en) * | 2013-10-12 | 2014-01-22 | 河南开启电力实业有限公司 | Abnormal overvoltage on-line detection device |
-
2013
- 2013-10-12 CN CN201320628056.2U patent/CN203502484U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529280A (en) * | 2013-10-12 | 2014-01-22 | 河南开启电力实业有限公司 | Abnormal overvoltage on-line detection device |
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Granted publication date: 20140326 Termination date: 20161012 |