CN219268557U - Flexible and straight interconnection micro-grid data transmission structure of transformer area - Google Patents
Flexible and straight interconnection micro-grid data transmission structure of transformer area Download PDFInfo
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- CN219268557U CN219268557U CN202223285693.2U CN202223285693U CN219268557U CN 219268557 U CN219268557 U CN 219268557U CN 202223285693 U CN202223285693 U CN 202223285693U CN 219268557 U CN219268557 U CN 219268557U
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Abstract
The utility model provides a data transmission structure of a flexible-direct interconnection micro-grid of a transformer area, which is based on an intelligent distribution transformer terminal, a synchronous device, a flexible-direct interconnection system, an energy storage system and a cloud master station; and the flexible-straight interconnection system interconnects the plurality of the transformer areas to form a transformer area flexible-straight interconnection micro-grid. And a data transmission structure of the flexible and straight interconnection micro-grid of the transformer area is established in the micro-grid by adopting various forms such as 4G/5G, RS485, network cables, HPLC carrier waves and the like, so that the data transmission of micro-grid control and information is realized, and the stable, autonomous and efficient operation of the system is maintained.
Description
Technical Field
The utility model belongs to the technical field of low-voltage intelligent power distribution, and particularly relates to a data transmission structure of a flexible and straight interconnection micro-grid in a transformer area.
Background
The distributed new energy is widely connected with a grid to access the low-voltage distribution network, higher requirements are put on the electric energy quality and the power supply capacity of the low-voltage transformer areas, and the transformer areas are connected with each other through a flexible-direct interconnection technology to construct a flexible-direct interconnection micro-grid of the transformer areas, so that parallel operation of the transformer areas and sharing and mutual use of power distribution resources are realized. In practical application, the traditional areas cannot be directly communicated, reliable operation and flexible resource utilization of the flexible and straight interconnection micro-grid of the areas are achieved, and therefore the data transmission structure of the flexible and straight interconnection micro-grid of the areas is a key for affecting stable, autonomous and efficient operation of the system.
Disclosure of Invention
Aiming at the defects and shortcomings of the existing scheme, the data transmission structure of the flexible and straight interconnection micro-grid of the transformer area is established in the micro-grid by adopting various forms such as 4G/5G, RS485, network cables, HPLC carrier waves and the like, so that the data transmission of the control type and the information type of the micro-grid is realized, and the stable, autonomous and efficient operation of the system is maintained.
The technical scheme is as follows:
a flexible and straight interconnection micro-grid data transmission structure of a platform area is characterized in that: based on intelligent distribution transformer terminals, synchronous devices, flexible and straight interconnection systems, energy storage systems and cloud master stations;
the flexible-straight interconnection system is used for interconnecting a plurality of areas to form an area flexible-straight interconnection micro-grid;
the intelligent distribution transformer terminal is in wireless communication with the cloud master station through 4G or 5G to perform data transmission, is connected with the synchronous device through a network cable to perform data transmission, is connected with the flexible direct-current interconnection system controller through the network cable to perform data transmission, and is connected with the intelligent switch of the station area through an HPLC carrier wave or RS485 to perform data transmission;
the synchronous device is connected with the flexible-direct interconnection system controller through a network cable to perform data transmission; the flexible-straight interconnection system controller is connected with the energy storage system through a network cable to perform data transmission.
Under the data transmission structure, the cloud master station and the intelligent distribution transformer terminal can generally transmit control type data and information type data by adopting an IEC 60870-5-104 protocol, wherein the control type data comprises but is not limited to off-grid control instructions, grid-connected control instructions and micro-grid operation mode switching instructions, and the information type data comprises but is not limited to platform load rate, three-phase voltage and three-phase current.
Under the data transmission structure, the intelligent distribution transformer terminal, the synchronous device and the flexible direct interconnection system controller can generally transmit control data and information data by using a Modbus-tcp protocol, and the intelligent distribution transformer terminal and the intelligent switch of the platform region transmit the control data and the information data by using a DL/T645 protocol. The transmission control data comprises a closing control command and a separating control command, and the information data comprises, but is not limited to, a transformer area load rate, three-phase voltage and three-phase current, and intelligent switch three-phase voltage and three-phase current.
Under the data transmission structure, the flexible-direct interconnection system controller and the energy storage system adopt Modbus-tcp protocol to transmit control data and information data, wherein the transmission control data comprises but not limited to a charging control instruction and a discharging control instruction, and the information data comprises but not limited to energy storage current, voltage and current.
Under the data transmission structure, the soft-direct interconnection system controller and the synchronous device adopt a Goose protocol to transmit information data, wherein the information data are switching-off and switching-on information of the main switch.
The functions and the protocol architecture can be realized on the basis of the hardware structure of the data transmission, thereby laying a hardware structure foundation for solving the problems in the prior art.
The intelligent distribution transformer terminal, the synchronous device, the flexible-direct interconnection system and other devices are configured in the micro-grid, the data transmission structure of the platform flexible-direct interconnection micro-grid is established in various forms such as 4G/5G, RS485, network cables, HPLC carrier waves and the like, the micro-grid control type and information type data transmission is realized, the stable, autonomous and efficient operation of the system is maintained, and the system has obvious executable performance.
Drawings
The utility model is described in further detail below with reference to the attached drawings and detailed description:
fig. 1 is a schematic diagram of a data transmission structure of a flexible-direct interconnection micro-grid in a transformer area according to an embodiment of the present utility model.
Fig. 2 is a schematic diagram of data transmission of grid-off switching of a flexible-direct interconnection micro-grid in a transformer area according to an embodiment of the present utility model.
Detailed Description
Hereinafter, specific embodiments of the present application will be described in detail with reference to the accompanying drawings, and according to these detailed descriptions, those skilled in the art can clearly understand the present application and can practice the present application. Features from various embodiments may be combined to obtain new implementations or to replace certain features from certain embodiments to obtain other preferred implementations without departing from the principles of the present application.
In order to make the features and advantages of the present patent more comprehensible, embodiments accompanied with figures are described in detail below:
as shown in fig. 1 and fig. 2, the data transmission structure diagram of the flexible and straight interconnection micro-grid in the platform area of this embodiment includes the following main elements: the intelligent distribution transformer comprises an intelligent distribution transformer terminal, a synchronous device, a flexible and straight interconnection system, an energy storage system, a cloud master station and the like, wherein the flexible and straight interconnection system interconnects a plurality of transformer areas to form a transformer area flexible and straight interconnection micro-grid.
In the flexible and straight interconnection micro-grid of the transformer area, the intelligent distribution transformer terminal performs data transmission in various modes such as 4G/5G, RS485, network cable, HPLC carrier wave and the like; the intelligent distribution transformer terminal and the cloud master station perform data transmission in a 4G or 5G mode, the synchronous device performs data transmission in a network cable mode, the flexible direct interconnection system controller performs data transmission in a network cable mode, and the intelligent switch of the platform region performs data transmission in an HPLC carrier or RS485 mode; the synchronous device and the flexible-direct interconnection system controller perform data transmission in a network cable mode; and the flexible-direct interconnection system controller and the energy storage system perform data transmission in a network cable mode.
The intelligent distribution transformer terminal refers to equipment for collecting operation information such as a distribution transformer, a low-voltage circuit breaker/residual current action protector, an intelligent electric energy meter and the like and collecting user electricity consumption information, and is generally used for completing functions such as distribution transformer metering total surface monitoring, line in-out switch/residual current action protector monitoring, state monitoring, load management, dynamic reactive compensation, three-phase imbalance management, harmonic wave management, safety protection, interactive management, asset management, video monitoring, environment monitoring, distributed power supply access management and the like.
Based on the data transmission hardware architecture designed above in this embodiment, in combination with existing protocols and control manners in the prior art, the following functions of controlling the micro-grid and transmitting information data as shown in fig. 1 and 2 can be realized, and the stable, autonomous and efficient operation of the system can be maintained.
As a preferable scheme of the embodiment, the cloud master station and the intelligent distribution transformer terminal adopt IEC 60870-5-104 protocol to transmit control data and information data, wherein the control data comprises but is not limited to off-grid control instructions, grid-connected control instructions and micro-grid operation mode switching instructions, and the information data comprises but is not limited to platform load rate, three-phase voltage and three-phase current. The intelligent distribution transformer terminal and the synchronous device and the flexible direct interconnection system controller adopt Modbus-tcp protocol to transmit control data and information data, the intelligent distribution transformer terminal and the intelligent switch of the platform region adopt DL/T645 protocol to transmit control data and information data, the transmission control data comprises a closing control instruction and a separating brake control instruction, and the information data comprises but is not limited to the platform region load rate, three-phase voltage, three-phase current, three-phase voltage and three-phase current of the intelligent switch. The flexible-direct interconnection system controller and the energy storage system adopt Modbus-tcp protocol to transmit control data and information data, wherein the transmission control data comprises but not limited to a charging control instruction and a discharging control instruction, and the information data comprises but not limited to energy storage current, voltage and current. The soft-direct interconnection system controller and the synchronous device adopt a Goose protocol to transmit information data, wherein the information data is switching-off and switching-on information of the main switch.
As a preferred scheme of the embodiment, a data transmission process of grid-off-grid switching of the flexible-direct interconnection micro-grid of the platform is shown in fig. 2: firstly, the intelligent distribution transformer terminal receives a grid-connection-off control instruction of the cloud master station, and transmits operation data of the intelligent switch, the flexible-direct interconnection system and the energy storage system of the transformer area to the cloud master station. And then, after receiving a grid-off control instruction of the cloud master station, the intelligent distribution transformer terminal switches on or off a main line switch through a synchronous device, and switches the converter of the flexible-direct interconnection system into V/f control (off-grid) or P/Q control (grid-connected). And then, after the synchronous device is switched on or off, the state information of the total incoming line switch is transmitted to a flexible-direct interconnection system controller, and the flexible-direct interconnection system controller performs balance control on the electric energy of the transformer area by controlling the power of the converter.
In addition, the operation state data of the energy storage system is transmitted to the intelligent distribution transformer terminal through the flexible-direct interconnection system controller, and then transmitted to the cloud master station through the intelligent distribution transformer terminal. And the charge and discharge control instruction of the energy storage system is issued to the intelligent distribution transformer terminal by the cloud master station and then issued to the flexible-straight interconnection system controller, and the charge and discharge power of the energy storage system is controlled by the flexible-straight interconnection system controller.
It should be noted that, in the embodiments of the present utility model, the networking connection manner and the data transmission method between the devices are focused, and the design purpose is to construct a transmission channel for control type and information type data, and as for the specific working manner of each device after networking, on the one hand, the specific description and the description provided in the embodiments are not limited by the specific method, or the implementation of the embodiments must be considered as relying on the specific new method, so that the present utility model is not limited by the specific method.
The present patent is not limited to the above-mentioned best mode, any person can obtain other various forms of data transmission structures of the flexible and straight interconnection micro-grid of the platform area under the teaching of the present patent, and all equivalent changes and modifications made according to the scope of the present application should be covered by the present patent.
Claims (1)
1. A flexible and straight interconnection micro-grid data transmission structure of a platform area is characterized in that: based on intelligent distribution transformer terminals, synchronous devices, flexible and straight interconnection systems, energy storage systems and cloud master stations;
the flexible-straight interconnection system is used for interconnecting a plurality of areas to form an area flexible-straight interconnection micro-grid;
the intelligent distribution transformer terminal is in wireless communication with the cloud master station through 4G or 5G to perform data transmission, is connected with the synchronous device through a network cable to perform data transmission, is connected with the flexible direct-current interconnection system controller through the network cable to perform data transmission, and is connected with the intelligent switch of the station area through an HPLC carrier wave or RS485 to perform data transmission;
the synchronous device is connected with the flexible-direct interconnection system controller through a network cable to perform data transmission; the flexible-straight interconnection system controller is connected with the energy storage system through a network cable to perform data transmission.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223285693.2U CN219268557U (en) | 2022-12-08 | 2022-12-08 | Flexible and straight interconnection micro-grid data transmission structure of transformer area |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223285693.2U CN219268557U (en) | 2022-12-08 | 2022-12-08 | Flexible and straight interconnection micro-grid data transmission structure of transformer area |
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| CN219268557U true CN219268557U (en) | 2023-06-27 |
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| CN202223285693.2U Active CN219268557U (en) | 2022-12-08 | 2022-12-08 | Flexible and straight interconnection micro-grid data transmission structure of transformer area |
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| CN (1) | CN219268557U (en) |
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