CN103516057A - A power supply system base on electricity switching-on of a current transformer - Google Patents
A power supply system base on electricity switching-on of a current transformer Download PDFInfo
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- CN103516057A CN103516057A CN201210201919.8A CN201210201919A CN103516057A CN 103516057 A CN103516057 A CN 103516057A CN 201210201919 A CN201210201919 A CN 201210201919A CN 103516057 A CN103516057 A CN 103516057A
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Abstract
A power supply system base on electricity switching-on of a current transformer a power supply system is a power supply system which is specially used for realizing automation and intelligentization of an electric power distribution network, and the power supply system base on the electricity switching-on of the current transformer provides a stable power supply for an electric power automation terminal. The power supply system base on the electricity switching-on of the current transformer comprises a power supply-type current transformer, a current transformer testing module, a filtering module, a rectification module, a switch power supply module, an energy storage module, a control module, and a power supply output module. The power supply-type current transformer is connected with the current transformer testing module. Nonlinear working characteristics of the power supply-type current transformer are tested, and current and power transmission characteristics of the current transformer are obtained, and a transmission characteristic curve is also obtained. The filtering module and the rectification module are connected with the switch power supply module. The filtering module processes input signals of the current transformer. The energy storage module and the control module are connected with the power supply output module. The control module controls a charging circuit and a discharging circuit of the energy storage module through a high performance microprocessor. A smooth and stable power supply is output by the power supply output module.
Description
Denomination of invention
Power-supply system based on current transformer power taking
Technical field
Patent of the present invention belongs to a kind of distribution automation and intelligentized power-supply system of being exclusively used in of invention, and this system provides reliable and stable DC power supply for power automation terminal equipment.
Background technology
The automation of electrical network and intellectuality are the problems that various countries work of electric power system person pays close attention to always.Intelligent grid is for producing and household electricity provides reliable assurance.The normal operation of intelligent grid is completed by the mutual cooperation of power distribution automation equipment.Only complete power distribution automation device security and move reliably, the normal operation of guarantee intelligent grid.The safety and stability of distribution power automation terminal equipment power supply is to guarantee the normal operation of distribution power automation terminal equipment, guarantees the basic demand of intelligent grid safe operation.
Existing distribution power automation terminal power supply adopts the mode of voltage transformer power taking more.The distribution power automation terminal power volume of voltage transformer power taking is large, cost is high, installation is inconvenient.In the space of ring main unit or other small volume, install and be difficult to realize, and the voltage transformer of outdoor installation is vulnerable to the damage of external force, the fail safe of operation is affected.
The features such as it is little that the power-supply system based on current transformer power taking has volume, and cost is low, easy for installation, and adopt current transformer power taking as the power supply of middle-end equipment, power more reliable and more stable.
Summary of the invention
The object of patent of the present invention is to provide a kind of distribution automation and intelligentized power-supply system of being exclusively used in, and this system provides reliable and stable DC power supply for power automation terminal equipment.This power-supply system comprises operated type current transformer, current transformer test module, and filtration module, rectification module, switch power module, energy-storage module, control module, power supply output module forms.
Operated type current transformer provides the importation of AC power, the high-pressure side primary current operated type current transformer of flowing through, and the secondary output of instrument transformer is as the importation of AC power.
Current transformer test module is used for the nonlinear operation characteristic of measuring current instrument transformer, obtains current transformer electric current and power transfer characteristic, obtains its transfer curve.
Filtering processing is carried out in the AC power input that filtration module and rectification module are used for instrument transformer to provide and rectification is processed.Switch power module utilizes modern electric technology, and the time ratio that control switch transistor turns on and off, maintains regulated output voltage.
Energy-storage module coordinates Switching Power Supply to use together, in the situation that improving Switching Power Supply power output, strengthens the stability of power supply.
Control module is controlled charging circuit and the discharge circuit of energy storage device by high-performance microprocessor, strengthen the service time of energy storage device.The DC power supply that power supply output module stable output is adjustable, for electric power automatization terminal power supply unit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Number in the figure: 1-operated type current transformer 2-current transformer test module 3-secondary side linear load 4-filtration module 5-rectification module 6-switch power module 7-anti-backflow diode 8-MOSFET switching device 9-storage capacitor 10-load 11-energy-storage module 12-control module 13-high-performance microprocessor 14-operational amplifier 15-power supply output module
Embodiment:
Power-supply system based on current transformer power taking, its embodiment comprises: the power taking of current transformer is processed, the operating characteristic of current transformer, power delivery are processed, filtering, rectification are processed, the processing of Switching Power Supply, energy-storage module discharge and recharge processing, stable power supply output is processed.
The power taking of current transformer is processed and is comprised of operated type current transformer (1).High-pressure side primary current is transformed into secondary current output through operated type current transformer (1), as the importation of AC power.
The operating characteristic of current transformer, power delivery are processed and are comprised of operated type current transformer (1), current transformer test module (2), secondary side linear load (3).By continuous adjustment primary side current input size, measure the output current of secondary side, measure the voltage on secondary side linear load (3) simultaneously, obtain the power stage curve of current transformer, saturation curves, thus the operating characteristic of current transformer obtained.
Filtering, rectification are processed and are comprised of filtration module (4), rectification module (5).Filtration module (4) common-mode filter, RC filter circuit form, and the clutter filtering by current transformer interchange input out, obtains smoother ac input signal.Rectification module (5) is realized the function that is transformed into direct current signal by AC signal.
The processing of Switching Power Supply is comprised of switch power module (6), anti-backflow diode (7), switch mosfet device (8).The control of switch mosfet device (8) conducting takes pulse width modulation (PWM) to control with voltage threshold the mode combining, and makes output voltage values deviation less.The Main Function of anti-backflow diode (7) is to prevent electric current backflow, reduces its loss.
The processing that discharges and recharges of energy-storage module is comprised of storage capacitor (9), load (10), energy-storage module (11), control module (12), high-performance microprocessor (13) and operational amplifier (14).Storage capacitor (9) and energy-storage module (11) are energy storage device, in order to store electric weight.Control module (12), high-performance microprocessor (13) and operational amplifier (14) are control section, in order to control discharging and recharging energy storage device, load (10) current load that is limited, in order to reduce electric current in charging process, prevents the damage to energy storage device.The voltage signal that high-performance microprocessor (13) feeds back to through processing operational amplifier (14), judging whether should charge or discharge, by control module (12), implement charge and discharge process again, by load (10), control the size of current discharging and recharging.
Stable power supply output reason power supply output module (15) forms.Power supply output module (15) is inner with adjustable potentiometer, can regulate the size of DC power supply output, the parameters such as power factor (PF).
The present invention adopts advanced sensor technology, current transformer power taking technology.Directly from high-tension current inductor, obtain energy, as the input signal of power module.
The present invention adopts novel switch power technology, and a kind of nonlinear AC power of variation, through processing of circuit, is formed to a kind of stable dc power supply of linearity.
The present invention adopts Computer Control Technology, utilizes the devices such as high-performance microprocessor and operational amplifier control the charge and discharge process of energy storage device and discharge and recharge the time.The present invention adopts Conversion of Energy technology, chemical energy is changed into electric energy and use, and electric energy conversion is become to chemical energy storage.
The present invention adopts Anti-interference Design technology, and hardware aspect adopts common-mode filter, and RC filtering is processed, and by clutter, sharp wave signal filters, and forms compared with galvanic current source.Software aspect, has adopted software filtering algorithm, and Fourier Transform Algorithm makes software have very strong compatibility.
From economic angle, the present invention has saved the larger voltage transformer of volume, has saved the equipment such as UPS, makes full use of the characteristic of current transformer, greatly provides cost savings.Also environmental protection simultaneously.
From practicality and operability, the present invention adopts the current transformer of small volume, and installation wiring is very convenient, simple to operate, applicable to multiple cabinet type, has greatly strengthened practicality and operability.。
Stability, the present invention adopts current transformer power taking and storage battery jointly to the mode of system power supply, has strengthened stability.
Claims (1)
1. the power-supply system based on current transformer power taking mainly comprises: operated type current transformer (1), current transformer test module (2), secondary side linear load (3), filtration module (4), rectification module (5), switch power module (6), anti-backflow diode (7), switch mosfet device (8), storage capacitor (9), load (10), energy-storage module (11), control module (12), high-performance microprocessor (13), operational amplifier (14) and power supply output module (15).Operated type current transformer (1) is for the importation of AC power is provided, the high-pressure side primary current operated type current transformer (1) of flowing through, and the secondary output of instrument transformer is as the importation of AC power.Current transformer test module (2) and secondary side linear load (3) are in conjunction with nonlinear characteristic and the saturation characteristic of the transmission of measuring current instrument transformer.The AC power of input is carried out to filtering for filtration module (4) and rectification module (5) and rectification is processed, and obtains level and smooth stable power supply.Switch power module (6) is inner to be comprised of anti-backflow diode (7), switch mosfet device (8), storage capacitor (9) and load (10), forms and stablizes level and smooth DC power supply output.Energy-storage module (11), for out-put supply provides stand-by power supply, can normally be used when breaking down, and does not affect power supply.Control module (12) is comprised of high-performance microprocessor (13), operational amplifier (14).High-performance microprocessor (13) is relatively controlled charge and discharge process and the time of energy-storage module (11) by operational amplifier (14).Power supply output module (15) is the adjustable DC power supply power automatization terminal equipment use of stable output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210201919.8A CN103516057A (en) | 2012-06-19 | 2012-06-19 | A power supply system base on electricity switching-on of a current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210201919.8A CN103516057A (en) | 2012-06-19 | 2012-06-19 | A power supply system base on electricity switching-on of a current transformer |
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| CN103516057A true CN103516057A (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210201919.8A Pending CN103516057A (en) | 2012-06-19 | 2012-06-19 | A power supply system base on electricity switching-on of a current transformer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104401335A (en) * | 2014-12-02 | 2015-03-11 | 南车资阳机车有限公司 | Main driving system of hybrid power locomotive |
| CN113189389A (en) * | 2020-01-14 | 2021-07-30 | 西门子股份公司 | Current sensor unit and current detection circuit |
| CN114567084A (en) * | 2022-03-08 | 2022-05-31 | 温州大学乐清工业研究院 | Dual-mode intelligent sensor operation system based on line self-power-taking |
| CN114567084B (en) * | 2022-03-08 | 2024-06-04 | 温州大学乐清工业研究院 | Dual-mode intelligent sensor operation system based on line self-electricity-taking |
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| CN201185355Y (en) * | 2008-04-24 | 2009-01-21 | 武汉大学 | High voltage line induction electricity-taking apparatus |
| CN101478243A (en) * | 2008-10-13 | 2009-07-08 | 北京新雷能有限责任公司 | Switch electric power circuit with wide inputting range |
| CN102087347A (en) * | 2009-12-08 | 2011-06-08 | 张建 | Charged test method for current transformer and application thereof |
| US20110235218A1 (en) * | 2010-03-26 | 2011-09-29 | En Hui Wang | Control circuit and motor device |
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- 2012-06-19 CN CN201210201919.8A patent/CN103516057A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1411119A (en) * | 2002-09-30 | 2003-04-16 | 孙康 | Battery back-up D.C. uninterruption power source |
| JP2005027430A (en) * | 2003-07-02 | 2005-01-27 | Hitachi Ltd | Power conversion system |
| CN201185355Y (en) * | 2008-04-24 | 2009-01-21 | 武汉大学 | High voltage line induction electricity-taking apparatus |
| CN101478243A (en) * | 2008-10-13 | 2009-07-08 | 北京新雷能有限责任公司 | Switch electric power circuit with wide inputting range |
| CN102087347A (en) * | 2009-12-08 | 2011-06-08 | 张建 | Charged test method for current transformer and application thereof |
| US20110235218A1 (en) * | 2010-03-26 | 2011-09-29 | En Hui Wang | Control circuit and motor device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104401335A (en) * | 2014-12-02 | 2015-03-11 | 南车资阳机车有限公司 | Main driving system of hybrid power locomotive |
| CN113189389A (en) * | 2020-01-14 | 2021-07-30 | 西门子股份公司 | Current sensor unit and current detection circuit |
| CN114567084A (en) * | 2022-03-08 | 2022-05-31 | 温州大学乐清工业研究院 | Dual-mode intelligent sensor operation system based on line self-power-taking |
| CN114567084B (en) * | 2022-03-08 | 2024-06-04 | 温州大学乐清工业研究院 | Dual-mode intelligent sensor operation system based on line self-electricity-taking |
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Application publication date: 20140115 |