CN109038508A - A kind of overvoltage protection alarm system - Google Patents
A kind of overvoltage protection alarm system Download PDFInfo
- Publication number
- CN109038508A CN109038508A CN201810902708.4A CN201810902708A CN109038508A CN 109038508 A CN109038508 A CN 109038508A CN 201810902708 A CN201810902708 A CN 201810902708A CN 109038508 A CN109038508 A CN 109038508A
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- Prior art keywords
- module
- voltage
- current
- processor
- overvoltage
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/20—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electronic equipment
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
- H02H3/042—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned combined with means for locating the fault
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Protection Of Static Devices (AREA)
Abstract
The present invention discloses a kind of overvoltage protection alarm system, including voltage acquisition module, voltage processing module, filtering processing module, AD conversion module, processor, alarm module, display module, overvoltage warning module and high-voltage and current-limitation turn-off module；Voltage acquisition module is connect by voltage processing module with filtering processing module, filtering processing module is connect with AD conversion module, processor is connect with AD conversion module, display module, overvoltage warning module and display module respectively, and overvoltage warning module is logical to be connect with high-voltage and current-limitation turn-off module.The present invention passes through processor and combines voltage acquisition module, alarm module and display module, carry out overvoltage alarm and display, and block module under over-voltage condition by overvoltage warning module and high-voltage and current-limitation, carry out open circuit, avoid damage of the overvoltage to active filter, the system substantially increases the service life of active filter, with high security the characteristics of.
Description
Technical field
The invention belongs to the over-voltage protection technique fields of active filter, are related to a kind of overvoltage protection alarm system
System.
Background technique
Active Power Filter-APF is using modern power electronics technology and the Digital Signal Processing based on high-speed dsp device
Novel electric power harmonic wave control special equipment made of technology.It is by instruction current computing circuit and compensation current occuring circuit two
Major part composition.Electric current in the real-time monitoring wire of instruction current computing circuit, and analog current signal is converted into number
Signal is sent into high speed digital signal processor (DSP) and is handled signal, harmonic wave separated with fundamental wave, and with pulsewidth modulation
(PWM) signal form sends out driving pulse to compensation current occuring circuit, drives IGBT or I PM power module, generation and power grid
Harmonic current is equal, opposite polarity compensation electric current injects power grid, compensates or offsets to harmonic current, actively eliminates
Electric harmonic.
During use, there are over-voltage conditions for active filter, once overvoltage problem occurs for active filter,
Active filter will be caused to be damaged, and reduce the service life of electric elements.
Summary of the invention
The purpose of the present invention is to provide a kind of overvoltage protection alarm system, solve existing active filter and send out again
When raw overvoltage, the service life and safety of active filter are greatly reduced.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of overvoltage protection alarm system, including voltage acquisition module, voltage processing module, filtering processing module, AD
Conversion module, processor, alarm module, display module, overvoltage warning module and high-voltage and current-limitation turn-off module；
Voltage acquisition module is connect by voltage processing module with filtering processing module, filtering processing module and AD conversion mould
Block connection, processor are connect with AD conversion module, display module, overvoltage warning module and display module respectively, and overvoltage is pre-
Alert module is connect by high-voltage and current-limitation turn-off module with data acquisition module, and data acquisition module is connect with cloud storage system；
Voltage acquisition module uses voltage sensor, for the voltage signal of real-time detection active filter, and will test
Voltage be sent to filtering processing module through voltage processing module, wherein voltage processing module be voltage follower；
Module is filtered and uses filter, for being filtered to the voltage sent through voltage processing module, mistake
The impurity in voltage is filtered, improves the purity of voltage, filtered voltage is sent to AD conversion module；
AD conversion module is AD converter, for analog quantity voltage signal to be converted into the digital quantity voltage of processor identification
Signal, and the digital quantity voltage signal of conversion is sent to processor；
Processor receives the voltage that AD conversion module is sent, to the voltage valve of the active filter of received voltage and setting
Value compares, and when received voltage is more than threshold voltage, processor sends control instruction to alarm module, alarm module hair
Received voltage is respectively sent to display module and cloud storage system by warning reminding out, processor, meanwhile, processor is by voltage
Ultra-voltage threshold values information is to overvoltage warning module；
Alarm module is combined aural and visual alarm, and for issuing light alarm harmony warning reminding, the light alarm is LED light, sound
Alarm is buzzer；
Display module is liquid crystal display, and the voltage for receiving the voltage of processor transmission and carry out active filter is aobvious
Show；
Overvoltage warning module is used to receive the information of the voltage ultra-voltage threshold values of processor transmission, and sends pre-warning signal
Module is blocked to high-voltage and current-limitation；
High-voltage and current-limitation turn-off module is mounted on the route of active filter, for receiving the transmission of overvoltage warning module
Pre-warning signal, pre-warning signal blocks the electric current in input active filter based on the received, is effectively protected active filter
Wave device.
It further, further include data acquisition module, data acquisition module is mounted on the route of active filter, is used for
The input current and voltage of active filter after high-voltage and current-limitation blocks module blocks are acquired, and by the electric current of acquisition
Cloud storage system is sent to voltage.
Further, the data acquisition module includes voltage acquisition unit and current acquisition unit, the voltage acquisition
Unit and current acquisition unit are separately mounted to the input terminal of active filter, and voltage acquisition unit is voltage sensor, are used for
The input voltage of the active filter after high-voltage and current-limitation blocks module blocks is acquired, current acquisition unit is current sensor,
For acquiring the input current of the active filter after high-voltage and current-limitation blocks module blocks.
It further, further include cloud storage system, cloud storage system is used for the active filter that storage processor is sent
The input current and electricity of voltage and the active filter after the existing blocking module blocks of high pressure of data collecting module collected
Pressure.
Beneficial effects of the present invention:
Overvoltage protection alarm system provided by the invention passes through processor and combines voltage acquisition module, alarm module
And display module, it is alarmed overvoltage and is shown, realize effective warning reminding to active filter over-voltage；And passed through
Voltage warning module and high-voltage and current-limitation block module under over-voltage condition, carry out open circuit, avoid overvoltage to active filter
Damage, which substantially increases the service life of active filter, with high security the characteristics of.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will be described below to embodiment required
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is a kind of schematic diagram of overvoltage protection alarm system in the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
Refering to Figure 1, a kind of overvoltage protection alarm system, including voltage acquisition module, voltage processing module, filter
Wave processing module, AD conversion module, processor, alarm module, display module, overvoltage warning module, high-voltage and current-limitation open circuit mould
Block, data acquisition module and cloud storage system；
Voltage acquisition module is connect by voltage processing module with filtering processing module, filtering processing module and AD conversion mould
Block connection, processor are connect with AD conversion module, display module, overvoltage warning module and display module respectively, and overvoltage is pre-
Alert module is connect by high-voltage and current-limitation turn-off module with data acquisition module, and data acquisition module is connect with cloud storage system.
Voltage acquisition module uses voltage sensor, for the voltage signal of real-time detection active filter, and will test
Voltage be sent to filtering processing module through voltage processing module, wherein voltage processing module be voltage follower；
Module is filtered and uses filter, for being filtered to the voltage sent through voltage processing module, mistake
The impurity in voltage is filtered, improves the purity of voltage, filtered voltage is sent to AD conversion module；
AD conversion module is AD converter, for analog quantity voltage signal to be converted into the digital quantity voltage of processor identification
Signal, and the digital quantity voltage signal of conversion is sent to processor；
Processor receives the voltage that AD conversion module is sent, to the voltage valve of the active filter of received voltage and setting
Value compares, and when received voltage is more than threshold voltage, processor sends control instruction to alarm module, alarm module hair
Received voltage is respectively sent to display module and cloud storage system by warning reminding out, processor, at this point, processor is by voltage
Ultra-voltage threshold values information is to overvoltage warning module；
Alarm module is combined aural and visual alarm, and for issuing light alarm harmony warning reminding, the light alarm is LED light, sound
Alarm is buzzer；
Display module is liquid crystal display, and the voltage for receiving the voltage of processor transmission and carry out active filter is aobvious
Show；
Overvoltage warning module is used to receive the information of the voltage ultra-voltage threshold values of processor transmission, and sends pre-warning signal
Module is blocked to high-voltage and current-limitation；
High-voltage and current-limitation turn-off module is mounted on the route of active filter, for receiving the transmission of overvoltage warning module
Pre-warning signal, pre-warning signal blocks the electric current in input active filter based on the received, is effectively protected active filter
Wave device；
Data acquisition module is mounted on the route of active filter, for after high-voltage and current-limitation blocks module blocks
The input current and voltage of active filter are acquired, and the electric current of acquisition and voltage are sent to cloud storage system, described
Data acquisition module includes voltage acquisition unit and current acquisition unit, and the voltage acquisition unit and current acquisition unit are distinguished
It is mounted on the input terminal of active filter, voltage acquisition unit is voltage sensor, blocks module through high-voltage and current-limitation for acquiring
The input voltage of active filter after blocking, current acquisition unit are current sensor, are blocked for acquiring through high-voltage and current-limitation
The input current of active filter after module blocks.
The voltage and data collecting module collected for the active filter that cloud storage system is sent for storage processor
The input current and voltage of active filter after the existing blocking module blocks of high pressure.
Overvoltage protection alarm system provided by the invention passes through processor and combines voltage acquisition module, alarm module
And display module, it is alarmed overvoltage and is shown, realize effective warning reminding to active filter over-voltage；And passed through
Voltage warning module and high-voltage and current-limitation block module under over-voltage condition, carry out open circuit, avoid overvoltage to active filter
Damage, which substantially increases the service life of active filter, with high security the characteristics of.
The above content is just an example and description of the concept of the present invention, affiliated those skilled in the art
It makes various modifications or additions to the described embodiments or is substituted in a similar manner, without departing from invention
Design or beyond the scope defined by this claim, be within the scope of protection of the invention.
Claims (4)
1. a kind of overvoltage protection alarm system, it is characterised in that: at voltage acquisition module, voltage processing module, filtering
Manage module, AD conversion module, processor, alarm module, display module, overvoltage warning module and high-voltage and current-limitation turn-off module；
Voltage acquisition module is connect by voltage processing module with filtering processing module, and filtering processing module and AD conversion module connect
It connects, processor is connect with AD conversion module, display module, overvoltage warning module and display module respectively, overvoltage early warning mould
Block and high-voltage and current-limitation turn-off module with；
Voltage acquisition module uses voltage sensor, for the voltage signal of real-time detection active filter, and the electricity that will test
Pressure is sent to filtering processing module through voltage processing module, and wherein voltage processing module is voltage follower；
Module is filtered and uses filter, for being filtered to the voltage sent through voltage processing module, filtering electricity
Impurity in pressure, improves the purity of voltage, and filtered voltage is sent to AD conversion module；
AD conversion module is AD converter, and the digital quantity voltage for analog quantity voltage signal to be converted into processor identification is believed
Number, and the digital quantity voltage signal of conversion is sent to processor；
Processor receives the voltage that AD conversion module is sent, to the threshold voltage of the active filter of received voltage and setting into
Row comparison, when received voltage is more than threshold voltage, processor sends control instruction to alarm module, and alarm module issues report
Alert to remind, received voltage is respectively sent to display module and cloud storage system by processor, meanwhile, processor is super electric by voltage
Pressure valve value information is to overvoltage warning module；
Alarm module is combined aural and visual alarm, and for issuing light alarm harmony warning reminding, the light alarm is LED light, acoustic alarm
For buzzer；
Display module is liquid crystal display, and the voltage for receiving the voltage of processor transmission and carry out active filter is shown；
Overvoltage warning module is used to receive the information of the voltage ultra-voltage threshold values of processor transmission, and it is supreme to send pre-warning signal
Current limliting is pressed to block module；
High-voltage and current-limitation turn-off module is mounted on the route of active filter, for receiving the early warning of overvoltage warning module transmission
Signal, pre-warning signal blocks the electric current in input active filter based on the received, is effectively protected active filter.
2. a kind of overvoltage protection alarm system according to claim 1, it is characterised in that: further include data acquisition module
Block, data acquisition module are mounted on the route of active filter, for active after high-voltage and current-limitation blocks module blocks
The input current and voltage of filter are acquired, and the electric current of acquisition and voltage are sent to cloud storage system.
3. a kind of overvoltage protection alarm system according to claim 2, it is characterised in that: the data acquisition module packet
Voltage acquisition unit and current acquisition unit are included, the voltage acquisition unit and current acquisition unit are separately mounted to active power filtering
The input terminal of device, voltage acquisition unit are voltage sensor, for acquiring the active filter after high-voltage and current-limitation blocks module blocks
The input voltage of wave device, current acquisition unit are current sensor, for acquiring having after high-voltage and current-limitation blocks module blocks
The input current of source filter.
4. a kind of overvoltage protection alarm system according to claim 1, it is characterised in that: it further include cloud storage system,
The voltage for the active filter that cloud storage system is sent for storage processor and showing through high pressure for data collecting module collected
There are the input current and voltage of the active filter after blocking module blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810902708.4A CN109038508A (en) | 2018-08-09 | 2018-08-09 | A kind of overvoltage protection alarm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810902708.4A CN109038508A (en) | 2018-08-09 | 2018-08-09 | A kind of overvoltage protection alarm system |
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| Publication Number | Publication Date |
|---|---|
| CN109038508A true CN109038508A (en) | 2018-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810902708.4A Pending CN109038508A (en) | 2018-08-09 | 2018-08-09 | A kind of overvoltage protection alarm system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165674A (en) * | 2019-05-15 | 2019-08-23 | 安徽亚辉电气自动化有限公司 | A kind of active filter safety management system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020135235A1 (en) * | 2001-03-22 | 2002-09-26 | Winick Bradley D. | Active circuit protection for switched power supply system |
| CN107394763A (en) * | 2017-07-01 | 2017-11-24 | 合肥东玖电气有限公司 | A kind of electric wire netting arc extinguishing and overvoltage protection system |
| CN108051636A (en) * | 2017-11-10 | 2018-05-18 | 安徽徽远成电气科技股份有限公司 | Electrical cabinet overvoltage protection alarm system |
-
2018
- 2018-08-09 CN CN201810902708.4A patent/CN109038508A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020135235A1 (en) * | 2001-03-22 | 2002-09-26 | Winick Bradley D. | Active circuit protection for switched power supply system |
| CN107394763A (en) * | 2017-07-01 | 2017-11-24 | 合肥东玖电气有限公司 | A kind of electric wire netting arc extinguishing and overvoltage protection system |
| CN108051636A (en) * | 2017-11-10 | 2018-05-18 | 安徽徽远成电气科技股份有限公司 | Electrical cabinet overvoltage protection alarm system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165674A (en) * | 2019-05-15 | 2019-08-23 | 安徽亚辉电气自动化有限公司 | A kind of active filter safety management system |
| CN110165674B (en) * | 2019-05-15 | 2023-01-10 | 安徽亚辉电气自动化有限公司 | Active filter safety management system |
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Application publication date: 20181218 |