CN203759119U - Electric power user low-voltage harmonic wave on-line monitoring device - Google Patents
Electric power user low-voltage harmonic wave on-line monitoring device Download PDFInfo
- Publication number
- CN203759119U CN203759119U CN201320742857.1U CN201320742857U CN203759119U CN 203759119 U CN203759119 U CN 203759119U CN 201320742857 U CN201320742857 U CN 201320742857U CN 203759119 U CN203759119 U CN 203759119U
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- voltage
- measurement
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- control unit
- power
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model discloses an electric power user low-voltage harmonic wave on-line monitoring device, comprising a voltage-current mutual transformer which converts outer three-phase voltage and current to voltage and current with required magnitude for a measured chip. The voltage-current mutual transformer is connected to a measurement-control instrument central control unit for processing input, output, calculation and displaying various electric network parameters through a measurement chip for measuring the input voltage, current and power factors of the current-voltage transformer; the measurement-control instrument central control unit is at least provided with a liquid crystal displayer for displaying external voltage, current, power, power factors and 3-31times harmonic wave amount; the measurement-control instrument central control unit MCU is provided with a communication interface for outputting measured various parameters and remote measurement control; and the measurement-control instrument central control unit MCU is provided with a button for changing the system parameters and a DC power supply.
Description
Technical field
The power consumer low pressure harmonic wave on-Line Monitor Device that the utility model relates to a kind of energy Real-Time Monitoring custom power harmonic content parameter, belongs to electric harmonic on-Line Monitor Device.
Background technology
Market only has single harmonic monitoring device now, and can not Real-Time Monitoring, can only adopt this device to carry out a certain period or instantaneous Detecting Power Harmonics, do not belong to force device equipment of itself, conventionally after needing to have a power failure, this device is connected to the monitoring of carrying out temporary transient harmonic wave in power consumer system, affects the normal electricity consumption of user.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that prior art exists, and provide one can utilize existing electric power components and parts, comprise current transformer etc., thereby greatly reduce equipment cost, real time inspection harmonic component online, can remind in time power consumer rectification the impact of harmonic carcellation on electrical network, reduce the power consumer low pressure harmonic wave on-Line Monitor Device to electric network pollution.
The purpose of this utility model completes by following technical solution, it can become to measure by outside three-phase voltage and current conversion the voltage and current mutual inductor of the required amplitude of chip, it is characterized in that described voltage and current mutual inductor is by the measurement chip of input voltage, electric current and the power factor of a measuring voltage summation current transformer, with one for the treatment of inputting, export, calculate and showing that the measurement and control instrument centralized control unit MCU of various electrical network parameters is connected; Described measurement and control instrument centralized control unit MCU at least disposes the liquid crystal display that can show external voltage, electric current, power, power factor and 3-31 subharmonic amount.
Described measurement and control instrument centralized control unit MCU is provided with the various electrical network parameters that measure of output the communication interface for remote measurement and control; Described measurement and control instrument centralized control unit MCU also disposes the button for changing system parameter setting, and supplies whole device work required direct supply.
The utility model mainly solves the on-line monitoring problem of low-voltage electricity user harmonic wave, and this device self has gathered electrical energy parameter, comprises voltage, current parameters, on this device original function basis, increases Detecting Power Harmonics function, can measure each phase harmonic wave 3-31 time.
The utility model carries out on-line monitoring to harmonic wave, when harmonic component exceeds after national standard, can actively take effective harmonic elimination measure, is unlikely to produce the damage of consumer and affects the electrical network quality of power supply.Owing to increasing and measuring humorous wave energy on existing equipment, do not need in addition voltage, current signal to be gathered, greatly reduce equipment cost; The invention of this equipment has not only reduced the device damage causing due to harmonic wave, meanwhile, due to the impact of harmonic carcellation on electrical network in time, reduces the pollution to electrical network, has produced larger social effect.
Brief description of the drawings
Fig. 1 is structure composition frame chart of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is done to detailed introduction: shown in Fig. 1, the utility model can become to measure by outside three-phase voltage and current conversion the voltage and current mutual inductor 1 of the required amplitude of chip, described voltage and current mutual inductor 1 is by the measurement chip 2 of input voltage, electric current and the power factor of a measuring voltage summation current transformer, with one for the treatment of inputting, export, calculate and showing that the measurement and control instrument centralized control unit MCU of various electrical network parameters is connected; Described measurement and control instrument centralized control unit MCU at least disposes the liquid crystal display 3 that can show external voltage, electric current, power, power factor and 3-31 subharmonic amount.
Measurement and control instrument centralized control unit MCU described in the utility model is provided with the various electrical network parameters that measure of output the communication interface 4 for remote measurement and control; Described measurement and control instrument centralized control unit MCU also disposes the button 5 for changing system parameter setting, and supplies whole device work required direct supply 6.
Claims (2)
1. a power consumer low pressure harmonic wave on-Line Monitor Device, it can become to measure by outside three-phase voltage and current conversion the voltage and current mutual inductor of the required amplitude of chip, it is characterized in that described voltage and current mutual inductor is by the measurement chip of input voltage, electric current and the power factor of a measuring voltage summation current transformer, with one for the treatment of inputting, export, calculate and showing that the measurement and control instrument centralized control unit MCU of various electrical network parameters is connected; Described measurement and control instrument centralized control unit MCU at least disposes the liquid crystal display that can show external voltage, electric current, power, power factor and 3-31 subharmonic amount.
2. power consumer low pressure harmonic wave on-Line Monitor Device according to claim 1, is characterized in that described measurement and control instrument centralized control unit MCU is provided with various electrical network parameters that output measures the communication interface for remote measurement and control; Described measurement and control instrument centralized control unit MCU also disposes the button for changing system parameter setting, and supplies whole device work required direct supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320742857.1U CN203759119U (en) | 2013-11-22 | 2013-11-22 | Electric power user low-voltage harmonic wave on-line monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320742857.1U CN203759119U (en) | 2013-11-22 | 2013-11-22 | Electric power user low-voltage harmonic wave on-line monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203759119U true CN203759119U (en) | 2014-08-06 |
Family
ID=51254375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320742857.1U Expired - Fee Related CN203759119U (en) | 2013-11-22 | 2013-11-22 | Electric power user low-voltage harmonic wave on-line monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203759119U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111060735A (en) * | 2019-12-30 | 2020-04-24 | 重庆莱格特电气有限公司 | Low-voltage intelligent measurement and control system and method |
-
2013
- 2013-11-22 CN CN201320742857.1U patent/CN203759119U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111060735A (en) * | 2019-12-30 | 2020-04-24 | 重庆莱格特电气有限公司 | Low-voltage intelligent measurement and control system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20151122 |
|
| EXPY | Termination of patent right or utility model |