CN218498875U - Flexible wisdom coordinated control system of little electric wire netting - Google Patents
Flexible wisdom coordinated control system of little electric wire netting Download PDFInfo
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- CN218498875U CN218498875U CN202222815900.4U CN202222815900U CN218498875U CN 218498875 U CN218498875 U CN 218498875U CN 202222815900 U CN202222815900 U CN 202222815900U CN 218498875 U CN218498875 U CN 218498875U
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Abstract
The utility model relates to a little flexible wisdom coordinated control system of electric wire netting, its the system includes coordinated controller, gentle direct current device, circuit monitor, little grid system 、 Big electric wire netting alternating current generating line, coordinated controller with gentle direct current device connects through three distant communication modes, coordinated controller with the circuit monitor passes through RS485 interface communication mode and connects, gentle direct current device connects big electric wire netting alternating current generating line and little electric wire netting direct current generating line respectively, big electric wire netting alternating current generating line and little electric wire netting direct current generating line are connected respectively to the circuit monitor. The utility model discloses an effective operational state who monitors big electric wire netting and little electric wire netting in real time to through gentleThe system has the advantages of improving the safety of power grid equipment protection, ensuring the stable operation of a power grid, reducing reactive power consumption and improving the comprehensive utilization rate of energy sources by sex regulation and control.
Description
Technical Field
The utility model belongs to the technical field of little electric wire netting, specifically a little flexible wisdom coordinated control system of electric wire netting.
Background
The national grid issues "national grid company energy internet planning", which explicitly states: the method has the advantages that the new energy consumption capability of the power grid is improved, the technologies of flexible power distribution, virtual power plants, electrochemical energy storage, ordered charging and the like are fully utilized, interconnection and intercommunication and intelligent control of the power grid are enhanced, the resource allocation effect of the power grid is continuously enhanced, the requirement of access of distributed power supplies with installed capacity exceeding 1.8 hundred million kilowatts in national grid management areas is met, and the on-site consumption of high-proportion distributed new energy is promoted. A grid-connected and independent micro-grid is built according to local conditions, the aggregation and interaction of multiple loads such as a distributed power supply, an electric automobile, an energy utilization terminal and novel energy storage are promoted, the integration of load and storage of a source grid at a consumption side is realized, and the peak regulation and the optimized operation of the power grid are participated. "
The current distributed new energy power generation has the characteristics of geographical dispersity, intermittency, randomness, uncontrollable performance and the like, and most of the distributed new energy power generation adopts a 'rigid' variable current control strategy, so that the distributed new energy power generation is difficult to be directly flexibly integrated with the existing power network. Meanwhile, after a large number of distributed new energy sources are connected into the power distribution network, various protection mechanisms of the power distribution network are changed profoundly, the grid-connected operation of the distributed new energy sources may cause the problems of power grid voltage fluctuation, frequency conversion and the like, and potential safety hazards can be added to the power grid operation.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of prior art problem, the utility model aims to provide a flexible wisdom coordinated control system of little electric wire netting makes little electric wire netting and the flexible interconnection of big electric wire netting, improves the security to electric wire netting equipment protection, ensures the steady operation of electric wire netting.
The technical scheme of the application is as follows: the flexible intelligent coordination control system of the microgrid comprises a coordination controller, a flexible direct current conversion device, a line monitor and a microgrid system 、 Large power grid alternating current bus, coordination controller and stationThe flexible direct current transformer is connected in a three-remote communication mode, the coordination controller is connected with the line monitor in an RS485 interface communication mode, the flexible direct current transformer is respectively connected with a large power grid alternating current bus and a micro power grid direct current bus, and the line monitor is respectively connected with the large power grid alternating current bus and the micro power grid direct current bus.
The coordination controller comprises an ARM core board, a peripheral RS485 interface, an Ethernet interface and a three-remote communication interface.
Optionally, the coordination controller is connected to the human-computer intelligent platform in an ethernet communication manner.
The flexible direct current conversion device comprises a bidirectional converter and a breaker closing switch.
Optionally, the bidirectional converter and the breaker closing switch are located on a connector between the large power grid ac bus and the microgrid dc bus.
The line monitor comprises a distribution transformer monitoring terminal.
Optionally, the distribution transformer monitoring terminal is connected to the distribution transformer of the large power grid ac bus and the microgrid dc bus.
The micro-grid system comprises a direct current bus, a photovoltaic power generation system, an energy storage system and a charging pile load system.
Optionally, the dc bus is connected to the photovoltaic power generation system, the energy storage system, and the charging pile load system through the dc power conversion module and the dc protector.
Has the advantages that: the utility model provides a mode of distributing type new forms of energy electricity generation and the flexible integration of current power network, through the running state of real-time effective monitoring electric wire netting to through flexible regulation and control, improve the security to electric wire netting equipment protection, ensure the steady operation of electric wire netting, reduce reactive power consumption, improve the comprehensive utilization rate of the energy.
Drawings
Fig. 1 shows a schematic structural diagram of a microgrid flexible intelligent coordination control system.
The method comprises the following steps of 1-a coordination controller, 2-a line monitor, 3-a flexible direct current converter, 4-a large power grid alternating current bus, 5-a micro power grid direct current bus, 6-a man-machine intelligent platform, 7-a photovoltaic power generation system, 8-an energy storage system and 9-a charging pile load system.
Detailed Description
For a further understanding of the structure, features and objects of the present invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.
In this embodiment, referring to fig. 1, a flexible intelligent coordination control system for a microgrid includes a coordination controller 1, a line monitor 2, a flexible direct current converter 3, and a microgrid system 、 Big electric wire netting alternating current generating line 4, coordinated controller 1 with gentle direct current device 3 is connected through three remote communication modes, coordinated controller 1 with circuit monitor 2 is connected through RS485 interface communication mode, gentle direct current device 3 is connected big electric wire netting alternating current generating line 4 and little electric wire netting direct current generating line 5 respectively, big electric wire netting alternating current generating line 4 and little electric wire netting direct current generating line 5 are connected respectively to circuit monitor 2.
In an embodiment, the coordination controller 1 includes an ARM core board, a peripheral RS485 interface, an ethernet interface, and a three-remote communication interface, and the coordination controller 1 receives the collected data of the line monitor 2, processes, calculates, and compares the collected data, and is configured to send a control instruction to the flexible-direct current converter 3.
Further specifically, the coordination controller 1 is connected to the man-machine intelligent platform 6 in an ethernet communication manner, and the man-machine intelligent platform 6 receives real-time operation data of the coordination controller 1, monitors operation states of the large power grid and the micro power grid, and flexibly adjusts and updates a control strategy of the system.
In one embodiment, the flexible-direct current converter 3 comprises a bidirectional converter and a breaker closing switch.
More specifically, the bidirectional converter and the breaker closing switch are located on a connector of the large power grid alternating current bus 4 and the microgrid direct current bus 5. When the flexible-direct current converter 3 receives the control instruction of the coordination controller 1, the grid connection and grid disconnection states of the microgrid are changed through flexible adjustment of the bidirectional converter and the on-off of a breaker switch.
In one embodiment, the line monitor 2 includes a distribution transformer monitoring terminal (TTU).
Further specifically, the distribution transformer monitoring terminal is connected with the distribution transformer of the large power grid alternating current bus 4 and the micro power grid direct current bus 5, and is used for acquiring electrical parameters of a large power grid transmission line and electrical parameters of a micro power grid transmission line.
In one embodiment, the microgrid system comprises a direct current bus 5, a photovoltaic power generation system 7, an energy storage system 8 and a charging pile load system 9.
Further specifically, the direct current bus 5 is connected with the photovoltaic power generation system 7, the energy storage system 8 and the charging pile load system 9 through the direct current power supply conversion module and the direct current protector respectively.
For better understanding, the utility model discloses, following do a complete description to the theory of operation of the utility model:
the line monitor 2 respectively collects electrical parameters of a large power grid alternating current bus 4 and electrical parameters of a micro-grid direct current bus 5 through a distribution transformer, the collected data are transmitted to the coordination controller 1 through RS485 interface communication, the coordination controller 1 judges that the micro-grid can be subjected to grid-connected operation by reading the power generation power of a photovoltaic power generation system 7 in a micro-grid system and the load power of a charging pile load system 9 through strategy comparison when the power generation power of the photovoltaic power generation system 7 is greater than the load power of the charging pile load system 9, a control instruction is transmitted to the flexible converter 3 through a three-remote communication mode, after the flexible converter 3 receives the grid-connected control instruction, direct current measurement is subjected to high-frequency conversion through a bidirectional converter, the micro-grid presents a flexible characteristic, a closed switch realizes grid-connected operation of the micro-grid and the large power grid, and the photovoltaic power generation system 7 provides electric energy for the large power grid alternating current bus while charging the energy storage system 8; when the power generation power of the photovoltaic power generation system 7 is smaller than the load power of the charging pile load system 9, judging that the micro-grid needs power to a large grid through grid-connected operation, transmitting a control instruction to the flexible converter device 3 in a three-remote communication mode, after the flexible converter device 3 receives the grid-connected control instruction, rectifying and filtering the large grid through a bidirectional converter by alternating current measurement, enabling the large grid to become stable direct current voltage, closing a switch to realize grid-connected operation of the micro-grid and the large grid, and providing electric energy for the charging pile load system 9 through an alternating current bus of the large grid while the photovoltaic power generation system 7 supplies power to the charging pile load system 9; when the power generation power of the photovoltaic power generation system 7 is equal to the load power of the charging pile load system 9, the microgrid is judged to be in an off-grid state and independently run, a control command is transmitted to the flexible converter device 3 in a three-remote communication mode, and after the flexible converter device 3 receives the off-grid control command, the off-grid operation and the independent running of the microgrid are achieved by disconnecting the switch.
The utility model discloses an operating condition of system real-time effective monitoring electric wire netting to through flexible regulation and control, realized the mode that little electric wire netting fuses with big electric wire netting flexibility, improve the security to electric wire netting equipment protection, ensure the steady operation of electric wire netting, reduce reactive power consumption, improve the comprehensive utilization rate of the energy.
Claims (7)
1. The flexible intelligent coordination control system for the micro-grid is characterized by comprising a coordination controller, a flexible direct current conversion device, a line monitor and a micro-grid system 、 Big electric wire netting alternating current generating line, coordinated controller with gentle direct current device connects through three distant communication modes, coordinated controller with the circuit monitor passes through RS485 interface communication mode and connects, gentle direct current device connects big electric wire netting alternating current generating line and little electric wire netting direct current generating line respectively, big electric wire netting alternating current generating line and little electric wire netting direct current generating line are connected respectively to the circuit monitor.
2. The microgrid flexible intelligent coordination control system according to claim 1, wherein the coordination controller comprises an ARM core board, a peripheral RS485 interface, an Ethernet interface and a three-remote communication interface.
3. The microgrid flexible intelligent coordination control system according to claim 2, wherein the coordination controller is connected with a man-machine intelligent platform through an Ethernet communication mode.
4. The microgrid flexible intelligent coordinated control system of claim 1, wherein the flexible direct current device comprises a bidirectional converter and a breaker closing switch, the bidirectional converter and the breaker closing switch are located on a connector of the large grid alternating current bus and the microgrid direct current bus.
5. The microgrid flexible intelligent coordination control system as claimed in claim 1, wherein the line monitor is a distribution transformer monitoring terminal, and the distribution transformer monitoring terminal is connected with a distribution transformer arranged on the large grid alternating current bus and the microgrid direct current bus.
6. The microgrid flexible intelligent coordination control system of claim 1, wherein the microgrid system comprises a direct current bus, a photovoltaic power generation system, an energy storage system and a charging pile load system.
7. The microgrid flexible intelligent coordinated control system according to claim 6, wherein the direct current bus is connected with a photovoltaic power generation system, an energy storage system and a charging pile load system through a direct current protector and a direct current power supply conversion module respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222815900.4U CN218498875U (en) | 2022-10-25 | 2022-10-25 | Flexible wisdom coordinated control system of little electric wire netting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222815900.4U CN218498875U (en) | 2022-10-25 | 2022-10-25 | Flexible wisdom coordinated control system of little electric wire netting |
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| Publication Number | Publication Date |
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| CN218498875U true CN218498875U (en) | 2023-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222815900.4U Active CN218498875U (en) | 2022-10-25 | 2022-10-25 | Flexible wisdom coordinated control system of little electric wire netting |
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| CN (1) | CN218498875U (en) |
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- 2022-10-25 CN CN202222815900.4U patent/CN218498875U/en active Active
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