CN208433754U - A kind of voltage sag compensation device for three-phase equipment - Google Patents
A kind of voltage sag compensation device for three-phase equipment Download PDFInfo
- Publication number
- CN208433754U CN208433754U CN201820972824.9U CN201820972824U CN208433754U CN 208433754 U CN208433754 U CN 208433754U CN 201820972824 U CN201820972824 U CN 201820972824U CN 208433754 U CN208433754 U CN 208433754U
- Authority
- CN
- China
- Prior art keywords
- phase
- voltage
- module
- power grid
- road
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Control Of Electrical Variables (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model discloses a kind of voltage sag compensation devices for three-phase equipment, it is characterized by: the quick monitoring modular of three-phase power grid voltage and three phase network current monitoring module input power network signal to MCU main control chip, when detecting that MCU main control chip controls the cutting AC power source input of three road SCR switch modules when there is voltage dip in power grid, electrical equipment be can work normally when ensuring to occur in power grid voltage dip by super capacitor energy-storage module, three tunnel IGBT modules, the offer AC power source input of three road duplex frequency boostering transformers.MCU main control chip utilizes the data such as MCU single-chip microcontroller dsPIC30F6015 real-time sampling record three-phase power grid voltage, electric current, frequency, 67 microsecond of sample record interval, phase locked track is carried out to the sine wave of three-phase power grid voltage, when detecting that voltage dip occurs in three phase network, compensation temporarily drops in trigger voltage.Compensation way is to carry out the scheme progress three-phase voltage sag compensation that tri- road duplex frequency boostering transformer of inversion Bing Yong conveys offset voltage by three tunnel IGBT modules using super capacitor energy-storage module.Utility model device has depth voltage dip compensation function.
Description
Technical field
The utility model discloses a kind of voltage sag compensation device for three-phase equipment, is related to power system technology neck
Domain.
Background technique
In recent years, with the sensitive extensive use of power electronic equipment and the rapid hair of novel electric power load is modernized
Exhibition, dynamic power quality problem is of increasing concern, wherein one of the most prominent, the problem of cost maximum are exactly voltage dip,
International Electrical and Institution of Electronics (IEEE) by voltage dip be defined as supply voltage virtual value rapidly drop to the 90% of rated value to
10%, then go back up near normal value, and International Electrotechnical Commission (IEC) be then defined as dropping to the 90% of rated value to
1%, the duration is 10 milliseconds to 1 minute.
With becoming stronger day by day for power grid, previous appearance has a power failure, the major accidents such as under-voltage, phase shortage are fewer and fewer for a long time, and
Voltage dip becomes the matter of utmost importance for influencing power quality, according to the U.S. EPRI(DianKeYuan) AUTHORITATIVE DATA shows 92% or more
Power quality event be voltage dip or temporarily rise, other power quality proportions are less than 8%, LPQI(Leonardo electric energy
Quality work group) publication report display voltage dip (including short time voltage interruption) caused by power quality accident account for owning
The 60% of power quality.
Serious voltage dip will use electric equipment to stop working or produced product quality is caused to decline, and voltage is temporary
It is then different with the characteristic of electrical equipment that the seriousness influenced drops, it is however generally that, industrial process equipment is especially sensitive to voltage dip,
Because any one element can all make whole flow process shut down since power supply goes wrong in equipment, these industrial process are related to
The fields such as automobile, semiconductor, photovoltaic, plastics, petrochemical industry, weaving, optical fiber, beverage dairy industry, mobile communication, it is often temporary by voltage
Drop influence important equipment have cooling device control, direct current generator driving, programmable logic controller (PLC) (PLC), mechanical device, can
Speed-adjustable driving device etc..
Voltage dip mainly installs inhibition or the temporary falling unit of offset voltage in the control of user terminal and Improving Measurements at present,
Such product currently on the market mainly has the devices such as uninterrupted power supply (ups) Unity, Dynamic Voltage Regulator (DVR), but such
To there is network voltage detection speed in device slow at present, and compensation response speed is slow, compensation depth is low, the compensation time is short, the battery longevity
It orders short, battery and the compensation ability that serious problems restrict voltage sag compensation device such as needs to be regularly maintained, it is impossible to meet sensitivities
The demand that electronic and electrical equipment compensates voltage dip.
Utility model content
The purpose of this utility model is to provide a kind of voltage sag compensation devices for three-phase equipment.
The technical problem to be solved by the present invention is to provide one kind to have the characteristics that no battery, noiseless, non-maintaining, can use
In fast slowdown monitoring three phase network, quickly compensation, compensation depth up to 0V three-phase voltage sag compensation device.
The utility model is achieved through the following technical solutions: the quick monitoring modular of three-phase power grid voltage and three-phase electricity
Net current monitoring module inputs power network signal to MCU main control chip, when detect there is voltage dip in power grid when MCU master control core
Piece controls the cutting AC power source input of three road SCR switch modules, by super capacitor energy-storage module, three tunnel IGBT modules, three tunnel works
Electrical equipment can work normally when the offer AC power source input of frequency step-up transformer ensures to occur in power grid voltage dip.
RS485 communication module, ALARM alarm module, systematic microprocessor, LCD display module provide hommization can operation interface help
User preferably manages voltage dip event.
As optimal technical scheme, the quick monitoring modular of the three-phase power grid voltage, three phase network current monitoring module are
Three-phase power grid voltage, three phase network electric current, three phase network frequency are recorded using MCU main control chip dsPIC30F6015 real-time sampling
Data, sample record interval 67uS carry out phaselocked loop tracking to the sine wave of network voltage.
As precedence technique scheme, the super capacitor energy-storage module, three tunnel IGBT modules, three road duplex frequency boostering transformers
Voltage dip compensating module is formed, super capacitor energy-storage module is responsible for storing energy in stand-by time, when detecting three phase network
When there is voltage dip, super capacitor energy-storage module carries out tri- road duplex frequency boostering transformer of inversion Bing Yong by three tunnel IGBT modules
Generate the three-phase voltage of pure sine wave.
As optimal technical scheme, the systematic microprocessor, all the way RS485 communication module, all the way ALARM alarm mould
Block, LCD display module composition user operating system, all operation datas for the compensation device that this three-phase power grid voltage temporarily drops,
State and control can be obtained by the operating system.
As optimal technical scheme, the three roads SCR switch module, electric current passes through three tunnels when power supply system works normally
SCR Switch Cut-through electrical equipment, while charging to reservior capacitor, when generation temporarily drops in three-phase power supply system, three road SCR switching moldings
Block cuts off three-phase electricity and protection electrical equipment, and prevents down power transmission.
The beneficial effects of the utility model are:
The fast slowdown monitoring of three-phase power grid voltage: phase locked track, sample record interval are carried out to the waveform of three-phase power grid voltage
67uS detects whether three-phase power grid voltage occurs temporarily dropping in time；
Three-phase quickly compensates: quickly exporting three-phase compensation voltages in 0.8ms-2.0ms when detecting three-phase voltage sag；
Battery and non-maintaining is not needed: in the case that energy-storage travelling wave tube uses super capacitor, and super capacitor is most
In bypass condition, electric energy is not consumed, projected life was up to 20 years；
Three-phase compensation depth is high, the compensation time is long: three-phase compensation depth maximum can be to 0V, and the three-phase fully loaded compensation time can be extremely
1 second.
Detailed description of the invention
Fig. 1 is a kind of voltage sag compensation device schematic diagram for three-phase equipment；
Specific embodiment
All features or disclosed all methods announced in this specification or in the process the step of, in addition to mutually exclusive
Other than feature or step, it can combine in any way.
Any feature announced in this specification (including any accessory claim, abstract and attached drawing), except non-specifically
Narration by other equivalence values or can have similar purpose alternative features to be replaced, i.e., unless specifically stated, each feature is only
There is an example in a series of equivalent or similar characteristics.
As shown in Figure 1, the quick monitoring modular of three-phase power grid voltage and three phase network current monitoring module input power network signal
To MCU main control chip, when detecting that MCU main control chip controls the cutting of three road SCR switch modules when there is voltage dip in power grid
AC power source input, it is defeated by super capacitor energy-storage module, three tunnel IGBT modules, three road duplex frequency boostering transformers offer AC power source
Entering electrical equipment when ensuring to occur in power grid voltage dip can work normally.RS485 communication module ALARM alarm module, is
System microprocessor, LCD display module provide hommization can operation interface help user preferably manage voltage dip event.
The quick monitoring modular of the three-phase power grid voltage, three phase network current monitoring module are to utilize MCU main control chip
DsPIC30F6015 real-time sampling records three-phase power grid voltage, three phase network electric current, three phase network frequency data, between sample record
Every 67uS, phaselocked loop tracking is carried out to the sine wave of network voltage.
The super capacitor energy-storage module, three tunnel IGBT modules, the composition voltage dip compensation of three road duplex frequency boostering transformers
Module, super capacitor energy-storage module is responsible for storing energy in stand-by time, when detecting that voltage dip occurs in three phase network, surpasses
Grade capacitive energy storage module carries out the three of tri- road duplex frequency boostering transformer of inversion Bing Yong generation pure sine wave by three tunnel IGBT modules
Phase voltage.
The systematic microprocessor, all the way RS485 communication module, all the way ALARM alarm module, LCD display module composition
The operating system of user, all operation datas, state and the control of the compensation device that this three-phase power grid voltage temporarily drops, can lead to
Cross operating system acquisition.
The three roads SCR switch module, electric current is set by three road SCR Switch Cut-through electricity consumptions when power supply system works normally
It is standby, while charging to reservior capacitor, when generation temporarily drops in three-phase power supply system, three road SCR switch modules cut off three-phase electricity and guarantor
Electrical equipment is protected, and prevents down power transmission.
Claims (5)
1. a kind of voltage sag compensation device for three-phase equipment, it is characterised in that: the quick monitoring modular of three-phase power grid voltage
Input power network signal to MCU main control chip with three phase network current monitoring module, when detect there is voltage dip in power grid when
MCU main control chip controls the cutting AC power source input of three road SCR switch modules, by super capacitor energy-storage module, three road IGBT moulds
Block, three road duplex frequency boostering transformers provide AC power source input ensure to occur in power grid electrical equipment when voltage dip can be normal
Work；RS485 communication module, ALARM alarm module, systematic microprocessor, LCD display module provide hommization can operation interface
User is helped preferably to manage voltage dip event.
2. a kind of voltage sag compensation device for three-phase equipment according to claim 1, it is characterised in that: three-phase electricity
The quick monitoring modular of net voltage, three phase network current monitoring module are to utilize MCU main control chip dsPIC30F6015 real-time sampling
Record three-phase power grid voltage, three phase network electric current, three phase network frequency data, sample record interval 67uS, to network voltage
Sine wave carries out phase locked track.
3. a kind of voltage sag compensation device for three-phase equipment according to claim 1, it is characterised in that: super electricity
Hold energy-storage module, three tunnel IGBT modules, three road duplex frequency boostering transformers form voltage dip compensating module, super capacitor energy-storage mould
Block is responsible for storing energy in stand-by time, and when detecting that voltage dip occurs in three phase network, super capacitor energy-storage module passes through
Three tunnel IGBT modules carry out the three-phase voltage that tri- road duplex frequency boostering transformer of inversion Bing Yong generates pure sine wave.
4. a kind of voltage sag compensation device for three-phase equipment according to claim 1, it is characterised in that: system is micro-
Processor, all the way RS485 communication module, all the way ALARM alarm module, LCD display module form the operating system of user, this three
All operation datas, state and the control for the compensation device that phase network voltage temporarily drops can be obtained by the operating system.
5. a kind of voltage sag compensation device for three-phase equipment according to claim 1, it is characterised in that: three tunnels
SCR switch module, electric current is by three road SCR Switch Cut-through electrical equipments when power supply system works normally, while giving storage capacitors
Device charging；When generation temporarily drops in three-phase power supply system, three road SCR switch modules cut off three-phase electricity and protection electrical equipment, and prevent
Power transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820972824.9U CN208433754U (en) | 2018-06-24 | 2018-06-24 | A kind of voltage sag compensation device for three-phase equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820972824.9U CN208433754U (en) | 2018-06-24 | 2018-06-24 | A kind of voltage sag compensation device for three-phase equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208433754U true CN208433754U (en) | 2019-01-25 |
Family
ID=65101987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820972824.9U Active CN208433754U (en) | 2018-06-24 | 2018-06-24 | A kind of voltage sag compensation device for three-phase equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208433754U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011398A (en) * | 2019-03-15 | 2019-07-12 | 全球能源互联网研究院有限公司 | A kind of inverter and inverter |
| CN112350430A (en) * | 2020-11-03 | 2021-02-09 | 广东电网有限责任公司广州供电局 | Voltage sag protection circuit and apparatus |
| CN112653162A (en) * | 2020-12-17 | 2021-04-13 | 广东电网有限责任公司广州供电局 | Voltage sag compensation apparatus and method |
| CN113224765A (en) * | 2021-05-17 | 2021-08-06 | 国网河南省电力公司洛阳供电公司 | Dynamic compensation method for voltage sag fault of high-power equipment |
-
2018
- 2018-06-24 CN CN201820972824.9U patent/CN208433754U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011398A (en) * | 2019-03-15 | 2019-07-12 | 全球能源互联网研究院有限公司 | A kind of inverter and inverter |
| CN110011398B (en) * | 2019-03-15 | 2021-09-21 | 全球能源互联网研究院有限公司 | Inverter and inverter power supply |
| CN112350430A (en) * | 2020-11-03 | 2021-02-09 | 广东电网有限责任公司广州供电局 | Voltage sag protection circuit and apparatus |
| CN112653162A (en) * | 2020-12-17 | 2021-04-13 | 广东电网有限责任公司广州供电局 | Voltage sag compensation apparatus and method |
| CN113224765A (en) * | 2021-05-17 | 2021-08-06 | 国网河南省电力公司洛阳供电公司 | Dynamic compensation method for voltage sag fault of high-power equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208433754U (en) | A kind of voltage sag compensation device for three-phase equipment | |
| CN206313449U (en) | A kind of voltage sag compensation device for single-phase equipment | |
| CN103986173B (en) | The control method of a kind of electric power electric transformer and system | |
| CN103972976A (en) | Electric energy supply system | |
| CN101571563A (en) | Integrative electric energy quality monitoring terminal | |
| CN205248805U (en) | Novel DVR voltage compensation device | |
| US20180138710A1 (en) | Battery control methods and circuits, and energy storage to grid connection systems | |
| CN105119262A (en) | Circuit capable of simultaneously adjusting the quality of electric energy and performing active arc extinguishing on a low-current ground fault | |
| CN203491725U (en) | Novel high-reliability UPS | |
| CN105207208A (en) | Circuit achieving power flow control and small current ground fault active compensation arc suppression simultaneously | |
| CN102891517A (en) | Energy storage type lithium battery pack power system | |
| CN202721445U (en) | Intelligent reactive power compensation integrated module | |
| CN204407870U (en) | A kind of secondary battery protection circuit | |
| CN103618328A (en) | Power conversion system of mobile energy accumulating device | |
| CN103795090B (en) | Based on the emergency control method that the generator reactive of WAMS is exerted oneself | |
| CN103368249B (en) | The system and method that a kind of uninterrupted power supply is powered | |
| CN202550614U (en) | Off-line discharge device of storage battery | |
| CN204597597U (en) | A kind of domestic solar electric power system | |
| CN204696782U (en) | The double power-supply system of a kind of UPS and UPS equipment | |
| CN203423492U (en) | Electric energy quality series compensation control system based on solar photovoltaic power generation | |
| CN203301221U (en) | High voltage high power uninterrupted power supply device | |
| CN202856418U (en) | Energy storage type lithium battery pack power supply system | |
| CN206628827U (en) | Intelligent power supply system | |
| Ananda-Rao et al. | Microcontroller based battery controller for peak shaving integrated with solar photovoltaic | |
| CN203456874U (en) | Serial-connection type voltage compensation antagonistic apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |