CN211480934U - Reactive compensation remote control system - Google Patents
Reactive compensation remote control system Download PDFInfo
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- CN211480934U CN211480934U CN201922437866.XU CN201922437866U CN211480934U CN 211480934 U CN211480934 U CN 211480934U CN 201922437866 U CN201922437866 U CN 201922437866U CN 211480934 U CN211480934 U CN 211480934U
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- switching
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The utility model relates to a reactive compensation remote control system. The intelligent power supply system comprises a voltage and current acquisition circuit, a voltage and current processing circuit, a main control circuit, a switching circuit, a main power circuit and a data transmission unit DTU circuit, wherein one end of the voltage and current acquisition circuit is connected with a power grid, the other end of the voltage and current acquisition circuit is connected with the voltage and current processing circuit, the voltage and current processing circuit is connected with the main control circuit, the main control circuit is connected with the switching circuit and the data transmission unit DTU circuit, the switching circuit is connected with a capacitor bank, and the main power circuit is connected with the voltage and current processing circuit, the main control circuit and. When the transformer is in no-load, underload operation period, the utility model discloses can promote power supply system's power factor to reasonable control switching electric capacity through remote server.
Description
Technical Field
The utility model relates to a reactive power compensation device among the power supply system specifically is a reactive compensation remote control system.
Background
Due to the reasons of environmental protection, emission reduction and the like, a factory may encounter an irregular production stop or production reduction situation, but a transformer still needs to operate and cannot report the power supply station to stop operating, and the existing compensation equipment is not suitable for the current load state, so that the power factor is low. Therefore, the management of the existing compensation equipment is urgently needed to be upgraded, and the problems that the transformer runs in a light load and no load mode for a long time (production stoppage and production reduction in a factory) and the compensation effect is poor are solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a reactive compensation remote control system is in no-load, underloading operation period when the transformer, can promote power supply system's power factor to reasonable control switching electric capacity through remote server.
The utility model adopts the technical proposal that:
the utility model provides a reactive compensation remote control system, includes voltage current acquisition circuit, voltage current processing circuit, master control circuit, switching circuit, main power circuit, data transmission unit DTU circuit, voltage current acquisition circuit one end is connected with the electric wire netting, and voltage current processing circuit is connected to the other end, and voltage current processing circuit is connected with master control circuit, and master control circuit and switching circuit, data transmission unit DTU circuit connection, switching circuit and electric capacity group link, main power circuit and voltage current processing circuit, master control circuit, switching circuit connection.
Adopt above-mentioned technical scheme the utility model discloses, compare with prior art, beneficial effect is:
through the combination use of the reactive compensation main control circuit and the data transmission unit DTU, the unicity of the traditional compensation controller in use is changed, the remote detection and control capability is increased, and the practicability and flexibility of the original compensation controller are greatly improved.
Preferably, the present invention further provides:
the voltage and current acquisition circuit comprises a voltage sampling unit and a current sampling unit, and the voltage sampling unit and the current sampling unit are used for respectively acquiring the voltage value and the first current value of the bus.
And the main control circuit calculates the reactive compensation capacity to be switched according to the voltage value and the first current value, generates a control strategy according to the reactive compensation capacity to be switched, and sends the control strategy to the switching circuit.
The switching instruction generated by the background server is to set a to-be-switched reactive compensation capacity set value or change an original set value of the to-be-switched reactive compensation capacity.
The switching instruction generated by the background server is to forcibly switch or cut off the capacitor bank with the corresponding capacity.
The main control circuit generates a control strategy according to the switching instruction generated by the background server and sends the control strategy to the switching circuit.
Drawings
Fig. 1 is a circuit block diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a voltage current acquisition circuit of the present embodiment;
FIG. 3 is a schematic diagram of a voltage-current processing circuit of the present embodiment;
FIG. 4 is a schematic diagram of a master control circuit of the present embodiment;
FIG. 5 is a schematic diagram of a switching circuit of the present embodiment;
fig. 6 is a schematic circuit diagram of the data transmission unit DTU of the present embodiment.
Detailed Description
The invention will be further described with reference to the drawings and examples, which are only intended to facilitate the understanding of the invention. The illustrated embodiments do not limit the scope of the invention.
Referring to fig. 1 to 6, the reactive compensation remote control system according to this embodiment includes a voltage and current acquisition circuit, a voltage and current processing circuit, a main control circuit, a switching circuit, a main power circuit, and a data transmission unit DTU circuit, where one end of the voltage and current acquisition circuit is connected to a power grid, the other end of the voltage and current acquisition circuit is connected to the voltage and current processing circuit, the voltage and current processing circuit is connected to the main control circuit, the main control circuit is connected to the switching circuit and the data transmission unit DTU circuit, the switching circuit is connected to a capacitor bank, and the main power circuit is connected to the voltage and current processing circuit, the main control circuit, and the.
Wherein, the flow acquisition circuit adopts a CT 1035A/5 mA mutual inductor and a 250K 8 resistor; the voltage and current processing circuit adopts an electric energy metering chip ATT 7022E; the main control circuit adopts a singlechip TM32F103VCT 6; the switching circuit adopts a chip ULN2003 and an optical coupler EL 357N-C; the data transmission unit DTU circuit adopts a chip USR-GM 3; the main power circuit adopts a transformer TRANS-PCB-12V, MB6S rectifying circuit and an MP2359 circuit.
Current and voltage signals collected by an external main circuit are sent to an electric energy metering chip ATT7022E in a signal processing circuit through a mutual inductor CT 1035A/5 mA and a resistor 50K 8, processed data are sent to an STM32F103VCT6 chip of a main control circuit through an SPI communication interface, the main chip controls switching of an ULN2003 circuit according to the obtained data, and data remote transmission is achieved through a USR-GM3 circuit.
The main power circuit is converted from 380V to double 12V and 500MA through a TRANS-PCB-12V transformer to an MB6S rectifying circuit to output DC12V for ULN2003, DC5V is obtained through an MP2359 or 78L05 circuit for USR-GM3, and DC3.3V is obtained through an LM1117-3.3V circuit for an STM32F103VCT6 single chip microcomputer and an ATT7022E chip.
In a local mode, the voltage and current acquisition circuit acquires electric energy data including a voltage value and a first current value of a bus, the electric energy data is transmitted to the main control circuit through the voltage and current processing circuit, the main control circuit calculates the reactive compensation capacity to be switched according to the voltage value and the first current value, generates a control strategy according to the reactive compensation capacity to be switched, and transmits the control strategy to the switching circuit to control and switch a proper capacitance line.
In a remote mode, the voltage and current acquisition circuit acquires electric energy data in real time, the electric energy data comprise a voltage value and a first current value of a bus, the voltage and current data are converted into 2G data through the voltage and current processing circuit, the main control circuit sends the 2G data to the background server through the data transmission unit DTU circuit, the background server generates a switching instruction, the switching instruction is transmitted to the main control circuit through the data transmission unit DTU circuit, the main control circuit generates a control strategy according to the switching instruction generated by the background server, and the control strategy is sent to the switching circuit to control the switching of a proper capacitance.
The embodiment can control the fine reactive power compensation through the background server in the no-load and light-load periods of the transformer by checking the actual application effect, and is suitable for the conditions of irregular production stop or production reduction of a factory.
Claims (6)
1. The utility model provides a reactive compensation remote control system, its characterized in that includes voltage current acquisition circuit, voltage current processing circuit, master control circuit, switching circuit, main power circuit, data transmission unit DTU circuit, voltage current acquisition circuit one end is connected with the electric wire netting, and voltage current processing circuit is connected to the other end, and voltage current processing circuit is connected with master control circuit, and master control circuit and switching circuit, data transmission unit DTU circuit connection, switching circuit and electric capacity group link, and main power circuit and voltage current processing circuit, master control circuit, switching circuit are connected.
2. The reactive compensation remote control system according to claim 1, wherein the voltage and current acquisition circuit comprises a voltage sampling unit and a current sampling unit, and the voltage sampling unit and the current sampling unit respectively acquire a voltage value and a first current value of a bus.
3. The reactive compensation remote control system according to claim 2, wherein the main control circuit calculates reactive compensation capacity to be switched according to the voltage value and the first current value, generates a control strategy according to the reactive compensation capacity to be switched, and sends the control strategy to the switching circuit.
4. The reactive compensation remote control system according to claim 1, wherein the switching command generated by the background server is to set a reactive compensation capacity set value to be switched, or to change an original reactive compensation capacity set value to be switched.
5. The reactive compensation remote control system according to claim 4, wherein the switching instruction generated by the background server is to forcibly switch or cut off the capacitor bank with the corresponding capacity.
6. The reactive compensation remote control system according to claim 3, wherein the main control circuit generates a control strategy according to a switching instruction generated by the background server, and sends the control strategy to the switching circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922437866.XU CN211480934U (en) | 2019-12-30 | 2019-12-30 | Reactive compensation remote control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922437866.XU CN211480934U (en) | 2019-12-30 | 2019-12-30 | Reactive compensation remote control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211480934U true CN211480934U (en) | 2020-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922437866.XU Active CN211480934U (en) | 2019-12-30 | 2019-12-30 | Reactive compensation remote control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211480934U (en) |
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2019
- 2019-12-30 CN CN201922437866.XU patent/CN211480934U/en active Active
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