CN210640694U - Microgrid energy storage device with automatic adjusting function - Google Patents
Microgrid energy storage device with automatic adjusting function Download PDFInfo
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- CN210640694U CN210640694U CN201921518434.5U CN201921518434U CN210640694U CN 210640694 U CN210640694 U CN 210640694U CN 201921518434 U CN201921518434 U CN 201921518434U CN 210640694 U CN210640694 U CN 210640694U
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Abstract
The utility model relates to a microgrid energy storage device with automatic regulating function, including main control unit, energy storage device and two-way contravariant power supply unit, the alternating current end of two-way contravariant power supply unit links to each other with the fixed electric wire netting through the power bus bar, main control unit links to each other with energy storage device and two-way contravariant power supply unit respectively through the CAN bus, main control unit still links to each other with analog-to-digital converter through the CAN bus; the analog-to-digital converter is connected with a fixed network parameter detection sensor arranged on a fixed power grid; the fixed network parameter detection sensor is used for detecting required electric energy parameters and load characteristic parameters on a fixed power network, and the analog-to-digital converter performs analog-to-digital conversion on the detected required electric energy parameters and load characteristic parameters and then transmits the converted electric energy parameters and load characteristic parameters to the main controller. The utility model discloses the possibility of circuit damage or the damage of solid network operation equipment appears after having avoided being incorporated into the power networks.
Description
Technical Field
The utility model relates to a microgrid energy memory especially relates to a microgrid energy memory with automatic regulating function.
Background
In the process of transmitting energy from the microgrid energy storage system to the fixed power grid, although the fixed power grid can obtain extra redundant electric energy, sometimes, all the traditional energy of the fixed power grid can be replaced by the electric energy provided by all the microgrid systems. However, how much energy the microgrid energy storage system transmits to the power grid at any time is a supplementary effect to the power grid, and is optimized to the fixed power grid, which is a function that the microgrid energy storage system needs to have, and is very concerned at any time, otherwise, the microgrid energy storage system will be concerned about the function, and even the load equipment connected to the fixed power grid will be affected, and once the load equipment relates to an important place area, such as a hospital, a scientific research unit, a military unit, and the like, great serious consequences will be brought.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a microgrid energy storage device with automatically regulated function is provided, the possibility of circuit damage or the damage of the operation equipment of solidly netting has been avoided appearing after being incorporated into the power networks.
The utility model provides a technical scheme that its technical problem adopted is: the micro-grid energy storage device with the automatic adjusting function comprises a main controller, an energy storage device and a bidirectional inverter power supply device, wherein an alternating current end of the bidirectional inverter power supply device is connected with a fixed power grid through a power supply bus bar, the main controller is respectively connected with the energy storage device and the bidirectional inverter power supply device through a CAN (controller area network) bus, and the main controller is also connected with an analog-to-digital converter through the CAN bus; the analog-to-digital converter is connected with a fixed network parameter detection sensor arranged on a fixed power grid; the fixed network parameter detection sensor is used for detecting required electric energy parameters and load characteristic parameters on a fixed power network, and the analog-to-digital converter performs analog-to-digital conversion on the detected required electric energy parameters and load characteristic parameters and then transmits the converted electric energy parameters and load characteristic parameters to the main controller.
The energy storage device comprises a power lithium battery and a super capacitor.
The main controller is also connected with a network interface device.
The energy storage device is also provided with a battery management system.
Advantageous effects
Since the technical scheme is used, compared with the prior art, the utility model, have following advantage and positive effect: the utility model discloses a set up solid network parameter detection sensor on the fixed line net, with uploading to main control unit at present solid network parameter, main control unit is according to the output that present solid network parameter comes automatic micro-grid energy storage system, has avoided appearing the possibility of circuit damage or the damage of solid network operation equipment after being incorporated into the power networks.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
The utility model discloses an embodiment relates to a microgrid energy storage device with automatic regulating function, as shown in figure 1, including main control unit, energy storage device and two-way contravariant power supply unit, the alternating current end of two-way contravariant power supply unit is connected with the fixed electric wire netting through the power bus bar, main control unit passes through the CAN bus and links to each other with energy storage device and two-way contravariant power supply unit respectively, main control unit still passes through the CAN bus and links to each other with analog-to-digital converter; the analog-to-digital converter is connected with a fixed network parameter detection sensor arranged on a fixed power grid; the fixed network parameter detection sensor is used for detecting load characteristic parameters on the fixed power network, and the analog-to-digital converter performs analog-to-digital conversion on the detected electrical parameters and then transmits the electrical parameters to the main controller.
The main controller is composed of a digital controller DSP + FPGA device and serves as a core essential element of the whole device. The main controller is connected with a computer through an operation interface, downloads data, activates operation, can set all required parameters in the controller in a setting stage, allocates ports of the main controller to be activated, selects a communication protocol for each port and sets a communication speed. In the initial stage of entering work, the main tasks are to complete the comprehensive layout, the planning of stack area and the determination of communication rate, and the planning of time sequence.
In the embodiment, the main controller is connected with each device through the CAN bus, the module-level data communication CAN be realized through the CAN bus, the CAN bus is used as a core data transmission pivot of the device, and all information data CAN be transmitted and controlled under the scheduling of the main controller.
The energy storage device in the embodiment is composed of a power lithium battery and a super capacitor, the capacity of the power lithium battery meets the electric energy requirement of the micro-grid system, and the super capacitor is responsible for instant heavy-load power supply so as to meet the power requirement. The voltage level of the energy storage device is 600VDC and 1000VDC, and the voltage and the capacity of the energy storage device can be flexibly configured according to the energy requirement of the microgrid system and can be added or reduced.
In this embodiment, the energy storage device is further provided with a battery management system, and the battery management system is connected with the main controller through a CAN bus. The battery management system is responsible for monitoring parameters of all power lithium battery monomers in the energy storage device, including electric quantity, current, temperature and the like, and transmitting the parameters to the main controller through the CAN bus.
The main controller is also connected with the analog-to-digital converter through a CAN bus; the analog-to-digital converter is connected with a fixed network parameter detection sensor arranged on a fixed power grid. The fixed network parameter detection sensor is used for detecting load characteristic parameters on a fixed power network, electric energy parameters required by a system, such as load demand parameters, load characteristic parameters, such as capacitive load or inductive load and power factor parameters, can be obtained through the fixed network parameter detection sensor, and the parameters are sent to the analog-to-digital converter together. The analog-to-digital converter performs analog-to-digital conversion on the detected electrical parameters and transmits the electrical parameters to the main controller, namely, the analog-to-digital converter performs analog-to-digital conversion on the obtained electrical parameters and load characteristic parameters after receiving the electrical parameters and the load characteristic parameters detected by the fixed network parameter detection sensor, so that the parameters are quantized and calibrated, and the parameters are transmitted to the main controller after being quantized and calibrated. The main controller can adjust the output parameters of the micro-grid energy storage system before grid connection after receiving the parameters, and the circuit damage or the damage of the fixed network operation equipment after grid connection is avoided.
The specific adjustment method of the main controller is as follows: before grid connection or in the operation process, the system measures the characteristic parameters of the network, determines the real-time power demand and the characteristic parameters of the network, gives an optimized compensation mode through the main controller, and controls the power grid in real time after output adjustment, so that the quality of the power grid is effectively optimized.
Therefore, the output of the micro-grid energy storage device during grid connection is adjusted by acquiring the electric energy parameters and the load characteristic parameters required by the system on the fixed power grid, the blind grid connection condition in the prior art is changed, the possibility of line damage or damage of fixed network operation equipment after grid connection is avoided, the application effect and the actual benefit of the micro-grid energy storage system are greatly improved, and potential or major accidents are avoided.
In addition, it is worth mentioning that the real-time condition of the power lithium battery is also considered when the main controller adjusts the output of the microgrid energy storage system in the embodiment, so that the output of the lithium battery can meet the output requirement of the microgrid system and the service life of the lithium battery can be prolonged in the adjusting process.
The bidirectional inverter power supply device in the embodiment is used for completing inversion conversion of a power supply, and when the microgrid system device outputs energy, the bidirectional inverter power supply device converts direct-current electric energy in the energy storage device into alternating-current electric energy and feeds the alternating-current electric energy to a fixed-line power grid; when the micro-grid system device inputs energy, the bidirectional inverter power supply device converts alternating current electric energy of the fixed line power grid into direct current electric energy, and the direct current electric energy is fed to each lithium battery in the energy storage device.
When the bidirectional inverter power supply device is connected with a fixed-line power grid, the alternating current end of the bidirectional inverter power supply device is connected with the fixed-line power grid through the power supply bus bar, so that the micro-grid system is connected into the fixed-line power grid. The power supply busbar is a 380VAC power supply busbar. The energy of the micro-grid system device realizes the bidirectional flow of the energy through the power supply bus bar, and when the bidirectional inverter power supply device outputs, the energy is transmitted to the fixed line power grid by the micro-grid system; when the bidirectional inverter power supply device is used as input, the energy is transmitted to the microgrid system by the power grid.
The main controller is also connected with a network interface device which mainly has the following three functions: firstly, the function of short-distance wireless control operation is realized, WiFi information connection can be realized through the network interface device, and local wireless control is realized; secondly, data communication with a main control room of the fixed power grid is carried out, so that an access instruction of the microgrid system or parameter conditions given by the fixed power grid can be obtained; and thirdly, the microgrid system device is in communication link with a background management system, so that the microgrid system device can be used as an Internet terminal, all running information, battery parameter information and the like are used as transmitted data streams and are transmitted to a background server platform, and the background server completes management and control on the microgrid system device through an independent system platform.
Claims (4)
1. A micro-grid energy storage device with an automatic adjusting function comprises a main controller, an energy storage device and a bidirectional inverter power supply device, and is characterized in that an alternating current end of the bidirectional inverter power supply device is connected with a fixed power grid through a power supply bus bar, the main controller is respectively connected with the energy storage device and the bidirectional inverter power supply device through a CAN bus, and the main controller is also connected with an analog-to-digital converter through the CAN bus; the analog-to-digital converter is connected with a fixed network parameter detection sensor arranged on a fixed power grid; the fixed network parameter detection sensor is used for detecting required electric energy parameters and load characteristic parameters on a fixed power network, and the analog-to-digital converter performs analog-to-digital conversion on the detected required electric energy parameters and load characteristic parameters and then transmits the converted electric energy parameters and load characteristic parameters to the main controller.
2. The microgrid energy storage device with an automatic regulation function of claim 1, wherein the energy storage device comprises a power lithium battery and a super capacitor.
3. The microgrid energy storage device with an automatic adjustment function of claim 1, wherein the master controller is further connected with a network interface device.
4. The microgrid energy storage device with an automatic adjustment function of claim 1, characterized in that the energy storage device is further provided with a battery management system.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110635497A (en) * | 2019-09-12 | 2019-12-31 | 上海丰滋新能源船舶科技有限公司 | Microgrid energy storage device with automatic adjusting function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110635497A (en) * | 2019-09-12 | 2019-12-31 | 上海丰滋新能源船舶科技有限公司 | Microgrid energy storage device with automatic adjusting function |
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Effective date of registration: 20210510 Address after: 201800 1st floor, building 4, 358-368 Kefu Road, Jiading District, Shanghai Patentee after: Shanghai Ruirui New Energy Technology Co.,Ltd. Address before: 201812 Area C, 1st Building, No. 223 Jinyuan Third Road, Jiangqiao Town, Jiading District, Shanghai Patentee before: SHANGHAI FENGZI NEW ENERGY SHIP TECHNOLOGY Co.,Ltd. |