Design of touch screen energy storage system topology

Abstract

The invention discloses a design of a touch screen energy storage system topology, and relates to the technical field of energy storage systems, and the design comprises the following steps: selecting a touch screen which is provided with an Ethernet port and uses an Ethernet communication mode, and the touch screen is not limited to data interaction with energy storage system equipment by adopting a Modbus communication protocol; by adopting the energy storage system with the screen, the cost of learning the cloud platform by operation and maintenance personnel is reduced, the maintenance is more stable and reliable in an industrial control environment with poor signal quality, a multi-cabinet single-screen scheme is adopted, hardware products are defined from the software perspective, the cost is effectively controlled, the equipment failure rate is reduced, and the maintenance efficiency is improved. By utilizing a touch screen and software protocol adaptation mode, the human-computer interaction adaptation requirements of various touch screens can be realized only by developing a set of software, the labor cost and the software maintenance cost are reduced, and the topological design of the whole equipment is not influenced by increasing and reducing multiple controllers through the integration and adaptation of the software to communication.

Description

Technical Field

[0001] The invention relates to the technical field of energy storage systems, and in particular to a design of a topology of a touch screen energy storage system. Background Art

[0002] With the growth of energy demand and the emphasis on renewable energy, energy storage technology has developed rapidly. Energy storage systems play an important role in power supply, distributed energy management and other fields. Energy storage systems refer to equipment or devices that can store electrical energy or other forms of energy. Their main function is to store electrical energy when demand is low and release electrical energy when demand is high, so as to balance power supply and demand and improve energy efficiency. Energy storage systems are widely used in power systems, renewable energy generation, electric vehicles, data centers and other fields. In the development of energy storage systems, monitoring methods are also constantly evolving. Initially, it mainly relied on on-site manual inspections and some simple instrument monitoring. With the advancement of information technology, cloud monitoring has become a common method. It can realize remote data collection and analysis, which is convenient for operation and maintenance personnel to manage.

[0003] However, cloud monitoring also has some limitations. For local monitoring, although a local cloud solution can be replicated according to the cloud data model, the corresponding cost is high and the frequency of use is low, resulting in a certain waste of resources. At the same time, the traditional energy storage cabinet with screen solution is usually one cabinet and one screen, which undoubtedly increases the procurement cost and equipment failure rate. Moreover, for different energy storage scenarios, such as with energy management system and without energy management system, different human-machine operation software or touch screen solutions are often required to be developed, which increases labor costs and software maintenance costs. Therefore, it is necessary to propose a design of touch screen energy storage system topology to solve the problems in the prior art. Summary of the invention

[0004] The purpose of the present invention is to make up for the deficiencies of the prior art and to provide a design of a touch screen energy storage system topology, which can adapt to the expansion of the existing energy storage system's demand for human-computer interaction such as screens, without destroying the completeness of the original energy storage system solution or increasing the burden of software project customization.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a design of a touch screen energy storage system topology, the design comprising:

[0006] Choose a touch screen with an Ethernet port and using Ethernet communication. It is not limited to using Modbus communication protocol to interact with energy storage system equipment. The data transmission rate between the touch screen and each device is Where a is a specific correction coefficient, d is the total amount of data transmission, and t is the transmission time. This formula ensures efficient data exchange speed and defines the touch screen data exchange accuracy index. Where e is the accuracy coefficient, r is the amount of data transmitted correctly, and d is the total amount of data, which measures the accuracy of data interaction;

[0007] Define single-cabinet energy storage systems, including single-cabinet controllers, PCS and battery BMS equipment, as well as single-station energy storage systems composed of multiple single-cabinet energy storage systems;

[0008] Design a single-cabinet energy storage system topology with touch screen direct control, where the touch screen and single-cabinet controller are directly connected via Ethernet;

[0009] Design a single-station energy storage system topology controlled directly by a touch screen, where the touch screen communicates with multiple single-cabinet controller devices through a switch;

[0010] Design a single-station energy storage system topology with indirect touch screen control. The multi-cabinet controller communicates with the single-cabinet controller through a switch, and the touch screen communicates with the multi-cabinet controller.

[0011] Define hardware products from a software perspective, adopt a multi-cabinet single-screen solution to avoid the increase in costs and failure points for one cabinet and one screen, and define the cost reduction ratio Where g is the cost coefficient, sc is the cost of a single-screen solution, and oc is the cost of a multi-screen solution. The cost advantage is reflected by the cost reduction ratio C;

[0012] Through the touch screen plus software protocol adaptation method, the adaptation requirements of various touch screen human-computer interaction are realized. There is no need to develop multiple sets of software for different energy management systems. The software protocol adaptability is high. Where b is the adaptation coefficient, n is the number of successfully adapted parameters, and m is the total number of parameters. The software protocol adaptation degree P is used to measure the effect of software protocol adaptation.

[0013] The software integrates and adapts communications to ensure that adding or reducing multiple controllers does not affect the overall equipment topology design and the overall equipment stability index. Where c is the stability coefficient, s is the stable operation time, and f is the number of failures. The index S is used to evaluate the stability of the equipment topology design.

[0014] Furthermore, the touch screen is used in the system to collect information about the energy storage device, including but not limited to the working status of the energy storage system, fault alarm information, and historical operation records and fault alarm log information. At the same time, it can issue shutdown and power commands to the energy storage system, and its own software realizes the business functions of data storage and alarm fault indication. The specific implementation method of data collection and command issuance is optimized based on the adopted communication protocol and topological structure, and the touch screen data collection frequency is Among them, h is the collection coefficient, di is the amount of data collected, and ti is the collection time interval. This formula can be used to reasonably adjust the data collection frequency.

[0015] Furthermore, the single-cabinet controller device serves as a control device in a single-cabinet energy storage system, and executes the power on / off instructions and power instructions of the lower-level devices to the lower-level control, and is used to communicate with the touch screen to execute the touch screen acquisition and control instructions, or communicate with the multi-cabinet controller to execute the acquisition and control instructions of the multi-cabinet controller. A specific instruction processing module is provided inside the device, which parses and processes the received instructions, distributes the instructions to the corresponding lower-level devices according to preset rules, and passes them upward to the touch screen and the multi-cabinet controller. The data interaction between the module and other components follows strict communication protocols and data format rules, which defines the single-cabinet controller instruction processing efficiency. Where k is the efficiency coefficient, ii is the number of instructions processed, and tii is the processing time, which is used to measure the instruction processing capability of a single cabinet controller.

[0016] Furthermore, the multi-cabinet controller device is used as a control device in a single-station multi-parallel energy storage system. It controls the single-cabinet controller device below to execute the power on / off instructions and power instructions of the lower equipment in the sub-cabinet, and communicates with the touch screen to execute the collection and control instructions of the touch screen. It is used when energy management is required and the site scale exceeds the maximum control device scale of the single-station control system. It has a data integration function to comprehensively process the information collected from each single-cabinet controller device to generate a unified data format that meets the requirements of the touch screen. The multi-cabinet controller data integration degree Where l is the integration coefficient, ci is the amount of data after integration, and tiii is the integration time, which is used to evaluate the data integration capability of the multi-cabinet controller.

[0017] Furthermore, in the single-cabinet energy storage system topology controlled by the touch screen, the touch screen and the single-cabinet controller device collect energy storage system data through Ethernet direct connection, and control the PCS and BMS through the single-cabinet controller device to realize power on / off and reset operations. The Ethernet direct connection method adopts a new link layer protocol, which guarantees the data transmission rate and reduces the bit error rate, and follows a specific handshake and disconnection process when establishing and disconnecting the connection, defining the Ethernet direct connection reliability index Where m is the reliability coefficient, se is the amount of data successfully transmitted, and te is the total amount of data attempted to be transmitted, which measures the reliability of Ethernet direct connection.

[0018] Furthermore, in the single-station energy storage system topology directly controlled by the touch screen, the touch screen communicates with several single-cabinet controller devices through the switch to collect energy storage system data, and sends collection and control instructions to the lower-level devices through each single-cabinet controller. The switch adopts an intelligent traffic distribution algorithm to dynamically allocate network bandwidth according to the data traffic requirements of each single-cabinet controller device. At the same time, a cache mechanism is set inside the switch to cache data that cannot be transmitted in time and wait for the right time to transmit. The switch traffic distribution rationality index Where n is the allocation coefficient, ai is the reasonably allocated data flow, and tiiv is the total data flow, which is used to evaluate the rationality of the switch's traffic allocation.

[0019] Furthermore, in the single-station energy storage system topology indirectly controlled by the touch screen, the multi-cabinet controller device communicates with the single-cabinet controller device via Ethernet through the switch, and the multi-cabinet controller device collects information of each single-cabinet energy storage system device in the parallel machine, and then integrates the information required by the touch screen. The touch screen device connected to the same switch communicates with the multi-cabinet controller device, and the touch screen collects the integrated energy storage system data, and sends the instructions for controlling the lower-level equipment to the multi-cabinet energy storage system for comprehensive distribution. The multi-cabinet controller device adopts a unique data analysis algorithm when integrating information, extracts the key information required by the touch screen from the single-cabinet energy storage system equipment information, and adopts an information compression algorithm to reduce the data transmission volume when transmitting information to the touch screen, and defines the information compression ratio Where o is the compression coefficient, oi is the original data volume, and ii is the compressed data volume, which is used to measure the information compression effect.

[0020] Furthermore, in the multi-cabinet single-screen solution, the hardware products are defined from the software perspective, and the flexible configuration and control of the hardware equipment are realized through the specific software architecture design. The software architecture includes the device driver module, the data processing module and the instruction execution module. The modules exchange data and call functions through specific interfaces, and the remote update mechanism can be used to update and upgrade the software without disassembling and reinstalling the hardware equipment, thus defining the software update efficiency. Where p is the update coefficient, ui is the amount of updated data, and tii is the update time to evaluate the software update efficiency.

[0021] Furthermore, in the touch screen plus software protocol adaptation method, the software protocol adaptation adopts a protocol conversion algorithm to convert the communication protocols supported by different touch screens into a unified internal protocol, and in the protocol conversion process, a data verification mechanism is used to verify the converted protocol data. At the same time, a protocol adaptation database is set inside the software to store the communication protocol information of different touch screens and the corresponding conversion rules, and define the protocol conversion accuracy. Where q is the accuracy coefficient, sc is the amount of data converted correctly, and tc is the total amount of data converted, which measures the accuracy of protocol conversion.

[0022] Furthermore, the software integrates and adapts communications so that adding or reducing multiple controllers will not affect the overall device topology design. Through a dynamic topology adjustment algorithm, when adding or reducing multiple controllers, the software automatically senses the changes in the topology structure and adjusts the topology structure. During the adjustment process, a data synchronization mechanism is used to ensure data consistency between devices and define the topology adjustment response time. Where r is the response coefficient, tr is the adjustment time, and sr is the trigger time, which is used to evaluate the response speed of topology adjustment.

[0023] Compared with the existing technology, the design of the touch screen energy storage system topology has the following beneficial effects:

[0024] The present invention reduces the cost of learning the cloud platform for operation and maintenance personnel by adopting a screen-equipped energy storage system, and makes maintenance more stable and reliable in an industrial control environment with poor signal quality. It adopts a multi-cabinet single-screen solution and defines hardware products from a software perspective, which effectively controls costs and reduces equipment failure rates. By using a touch screen plus software protocol adaptation method, only one set of software needs to be developed to meet the adaptation requirements of human-computer interaction of multiple touch screens, reducing labor costs and software maintenance costs. Through software integration and adaptation of communications, it is ensured that the addition and reduction of multiple controllers will not affect the overall equipment topology design.

[0025] Other advantages, objectives and features of the present invention will be set forth in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A schematic diagram of the topology of a single-cabinet energy storage system directly controlled by a touch screen;

[0028] Figure 2 It is a schematic diagram of the topology of a single-station energy storage system directly controlled by a touch screen;

[0029] Figure 3Schematic diagram of the single-station energy storage system topology with indirect touch screen control. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1

[0032] In a large energy storage power station project, the energy storage system adopts the touch screen energy storage system communication topology design of the present invention. The energy storage power station is designed to meet the power storage and regulation needs in the region. Its energy storage system is large in scale, covering numerous energy storage units and complex control logic.

[0033] The energy storage system includes multiple single-cabinet energy storage systems. Each single-cabinet energy storage system serves as a basic energy storage unit, including a single-cabinet controller, PCS (power conversion system) and battery BMS (battery management system) equipment. These single-cabinet energy storage systems are reasonably combined and connected to form a single-station energy storage system to meet the energy storage capacity and power requirements of the entire power station.

[0034] The selected touch screen is an industrial-grade touch screen with an Ethernet port and high-performance processing capabilities. It uses Ethernet network communication for data transmission. This touch screen has good compatibility and scalability. Through software protocol adaptation, it can flexibly interact with energy storage system equipment. It is not limited to the Modbus communication protocol. Its screen resolution and touch response sensitivity can meet the needs of power station operators for real-time monitoring and operation of the energy storage system.

[0035] For one of the single-cabinet energy storage systems, a single-cabinet energy storage system topology with touch screen direct control is adopted. The touch screen and the single-cabinet controller device are directly connected via Ethernet. This connection method ensures the directness and efficiency of data transmission.

[0036] The touch screen follows the data transmission rate formula (where a is a specific correction coefficient, and its value is determined according to the hardware characteristics and communication environment between the touch screen and the single-cabinet controller, d is the total amount of data transmission, including the real-time status data of the energy storage system, fault alarm data, etc., and t is the transmission time) to conduct efficient data interaction with the single-cabinet controller. In actual operation, for example, when collecting battery temperature, voltage and other data of the single-cabinet energy storage system, the transmission rate is accurately calculated to ensure that the data can be transmitted to the touch screen in a timely and accurate manner for display and analysis.

[0037] The touch screen collects energy storage system data, including the battery charging and discharging status, the power output of the PCS, and the operating parameters of the single-cabinet controller. At the same time, the PCS and BMS are controlled by the single-cabinet controller to implement power on, power off, reset, and other operations. For example, when the battery temperature is too high, the touch screen can promptly send a shutdown command to the single-cabinet controller, and the single-cabinet controller will then control the PCS and BMS to stop working to protect the safety of the battery and the entire energy storage system.

[0038] The touch screen's own software implements business functions such as data storage, alarm and fault indication, and its data collection accuracy index (where e is the accuracy coefficient, and its value is determined based on the data acquisition algorithm and verification mechanism inside the touch screen, r is the amount of data transmitted correctly, and d is the total amount of data) To ensure the accuracy of the collected data, when collecting battery voltage data, if the total amount of collected data is 100 data points, of which 98 are correctly transmitted, the accuracy index is calculated according to the formula, and the operator can judge the reliability of data collection based on this.

[0039] For the entire single-station energy storage system, most of them adopt the single-station energy storage system topology with direct control by touch screen, and the touch screen communicates with several single-cabinet controller devices through a switch.

[0040] The switch uses an intelligent traffic distribution algorithm to distribute traffic according to the rationality index. (where n is the allocation coefficient, and its value is dynamically adjusted according to the hardware performance of the switch and the network load. ai is the reasonably allocated data flow, that is, the flow allocated according to the real-time data demand of each single-cabinet controller device. tiiv is the total data flow, including the sum of the data demand of all single-cabinet controller devices.) Dynamically allocate network bandwidth. For example, during the operation of the power station, when some single-cabinet controller devices have a large demand for real-time data, such as during the peak period of battery charging and discharging, the switch can adjust the bandwidth allocation in time according to the algorithm to ensure that each single-cabinet controller device can obtain the required data flow in time, thereby ensuring the stable operation of the energy storage system.

[0041] The touch screen sends collection and control instructions to the lower-level equipment through each single-cabinet controller to collect energy storage system data. These data include the comprehensive operating status, power distribution and fault alarm information of each single-cabinet energy storage system. Through the collection and analysis of these data, operators can fully understand the operation of the entire single-station energy storage system and make corresponding operations and adjustments in a timely manner.

[0042] In some areas where there are a large number of parallel machines and comprehensive application requirements (such as comprehensive energy management, overload and reverse flow protection, peak shaving and valley filling, etc.), a single-station energy storage system topology with indirect control by touch screen is adopted.

[0043] The multi-cabinet controller device communicates with the single-cabinet controller device via Ethernet through the switch. The multi-cabinet controller device is based on the data integration formula (where l is the integration coefficient, and its value is determined according to the data integration algorithm and processing capacity inside the multi-cabinet controller, ci is the amount of integrated data, including comprehensive data collected and processed from each single-cabinet controller device, and tii is the integration time) collects information on each single-cabinet energy storage system device in the parallel machine, and integrates the information required by the touch screen. For example, when performing comprehensive energy management, the multi-cabinet controller needs to integrate the power, electricity and other information of each single-cabinet energy storage system in order to provide the touch screen with accurate comprehensive data for the formulation of energy management strategies.

[0044] The touch screen devices connected to the same switch communicate with the multi-cabinet controller devices, and the touch screen uses the information compression ratio formula (where o is the compression coefficient, and its value is determined according to the information compression algorithm inside the touch screen, oi is the original data volume, that is, the data volume received from the multi-cabinet controller, and ii is the compressed data volume) collects the integrated energy storage system data, and sends the instructions for controlling the lower-level equipment to the multi-cabinet energy storage system for comprehensive distribution. For example, when unified power control is required for multiple parallel single-cabinet energy storage systems, the touch screen sends the control instructions to the multi-cabinet controller, and the multi-cabinet controller distributes the instructions to each single-cabinet controller, thereby achieving effective control of the entire regional energy storage system.

[0045] In the entire project, a multi-cabinet single-screen solution is adopted, hardware products are defined from a software perspective, and the cost reduction ratio formula is used to reduce the cost. (Where g is the cost coefficient, and its value is determined based on the difference in hardware costs between single-screen and multi-screen solutions and factors such as project scale. sc is the cost of the single-screen solution, including the total cost of the touch screen, related software and supporting hardware. oc is the cost of the multi-screen solution, that is, the total cost if a one-cabinet-one-screen solution is adopted.) It can be seen that the cost is effectively controlled and the failure rate of the equipment is reduced. For example, in a power station project with 100 single-cabinet energy storage systems, if a one-cabinet-one-screen solution is adopted, 100 touch screens and their supporting equipment are required, which is costly and the failure rate will increase accordingly. However, if a multi-cabinet single-screen solution is adopted, only a high-quality touch screen and corresponding software configuration are required, which greatly reduces the cost and failure rate.

[0046] At the same time, the software integrates and adapts communications. When adding or removing multiple controllers, the software automatically senses topology changes through a dynamic topology adjustment algorithm and adjusts the response time according to the topology adjustment formula. (where r is the response coefficient, and its value is determined based on the performance and processing speed of the software; tr is the adjustment time, i.e., the time required for the software to perceive the change in topology and complete the adjustment; sr is the trigger time, i.e., the actual time when the topology changes.) The topology is adjusted to ensure normal communication between devices and ensure the production consistency of multi-scenario products. For example, when adding or reducing a single-cabinet energy storage system in a power station, the software can quickly perceive this change and adjust the topology in time so that the communication between the touch screen and each controller is not affected, and the operator can still monitor and operate the energy storage system normally.

[0047] By adopting the touch screen energy storage system communication topology design of the present invention, good results were achieved in this large energy storage power station project.

[0048] It effectively controls costs and reduces equipment failure rates. Compared with the traditional one-cabinet-one-screen solution, it greatly reduces hardware procurement and maintenance costs. At the same time, since the number of equipment is reduced, the failure rate is also reduced accordingly, which improves the reliability and stability of the entire energy storage system and reduces the operating costs of the power station.

[0049] The cost of learning the cloud platform for operation and maintenance personnel is reduced. In an industrial control environment with poor signal quality, touch screen maintenance is more stable and reliable than cloud operation and maintenance. Operators can directly monitor and operate the energy storage system in real time through the touch screen without the need for complex cloud platform operation knowledge, which improves operation and maintenance efficiency. At the same time, in the case of unstable signals, the touch screen can still work normally, ensuring continuous monitoring and control of the energy storage system.

[0050] Only one set of software needs to be developed to meet the adaptation requirements of human-computer interaction on various touch screens, which improves the reusability and development efficiency of the software. At the same time, the integration and adaptation of software to communications ensures the production consistency of multi-scenario products. Regardless of the different topological structures such as single-cabinet direct control, single-station direct control or single-station indirect control, the software can work normally, ensuring the stable operation and effective control of the energy storage system.

[0051] Embodiment 2

[0052] In a project in which a distributed energy storage system is applied to a smart microgrid, the energy storage system adopts the touch screen energy storage system communication topology design of the present invention. The distributed energy storage system is composed of multiple small single-cabinet energy storage systems distributed at different nodes of the smart microgrid to achieve flexible storage and regulation of local area electric energy. Each single-cabinet energy storage system includes a single-cabinet controller, PCS and battery BMS equipment.

[0053] The selected touch screen is an industrial touch screen with a high protection level and suitable for outdoor environments. It has an Ethernet port and uses Ethernet network communication. It can operate stably in complex outdoor environments and interact with energy storage system equipment through software protocol adaptation, which is not limited to the Modbus communication protocol.

[0054] For a single-cabinet energy storage system distributed on a node, a single-cabinet energy storage system topology with touch screen direct control is adopted, and the touch screen and the single-cabinet controller device are directly connected via Ethernet.

[0055] According to the data transmission rate formula Where a is determined by the specific hardware characteristics and communication environment between the touch screen and the single cabinet controller, d includes real-time status data of the energy storage system such as battery current and voltage, and t is the transmission time. This connection ensures efficient data transmission. For example, when monitoring the battery charging status, the touch screen can quickly obtain accurate data.

[0056] The touch screen collects data from the energy storage system, such as the charge and discharge status of the battery, the power output of the PCS, and the operating parameters of the single cabinet controller. It can also control the PCS and BMS through the single cabinet controller to perform operations such as on / off and reset. For example, if the battery voltage is too low, the touch screen can send a charging command through the single cabinet controller.

[0057] The touch screen software stores data and provides alarm and fault indication functions, data collection accuracy indicators Where e is determined by the data acquisition algorithm and verification mechanism inside the touch screen, r is the amount of data transmitted correctly, and d is the total amount of data, which ensures the accuracy of the collected data.

[0058] In the case of a group of single-cabinet energy storage systems in a certain area of ​​the microgrid, a single-station energy storage system topology with direct touch screen control is adopted, and the touch screen communicates with several single-cabinet controllers through a switch.

[0059] The switch uses an intelligent traffic distribution algorithm to distribute traffic according to the rationality index. Where n is adjusted according to the hardware performance of the switch and the network load, ai is the data traffic reasonably allocated according to the real-time data demand of each single-cabinet controller, and tiiv is the total data traffic, which ensures that each single-cabinet controller can obtain the required data traffic in a timely manner. For example, during peak power consumption, the switch can allocate more bandwidth to controllers that need it more.

[0060] The touch screen collects data from the energy storage system through the single-cabinet controller and sends collection and control instructions to lower-level devices. These data include the overall operating status, power distribution, and fault alarm information of the single-station energy storage system.

[0061] In some areas of the microgrid where multiple single-cabinet energy storage systems are connected for comprehensive applications such as load balancing and peak shaving, a single-station energy storage system topology with indirect control by touch screen is adopted.

[0062] The multi-cabinet controller device communicates with the single-cabinet controller device through the switch and Ethernet. The multi-cabinet controller device is based on the data integration formula Collect the information of each single cabinet energy storage system, where l is determined by the data integration algorithm and processing power inside the multi-cabinet controller, ci is the amount of integrated data after processing from each single cabinet controller, tiii is the integration time, and then it synthesizes the information required by the touch screen. For example, when performing load balancing, the multi-cabinet controller combines the power and energy data of each single cabinet to provide a comprehensive data set for the touch screen.

[0063] The touch screen communicates with multiple cabinet controllers through the same switch. The touch screen uses the information compression ratio formula Collect the synthesized energy storage system data, where o is determined by the information compression algorithm inside the touch screen, oi is the amount of original data received from the multi-cabinet controller, and ii is the amount of compressed data. Then it issues control instructions to the multi-cabinet energy storage system for distribution.

[0064] This project adopts a multi-cabinet single-screen solution, according to the cost reduction ratio formula Among them, g is determined by the difference in hardware costs between single-screen and multi-screen solutions and factors such as project scale, sc is the cost of a single-screen solution including touch screen, related software and supporting hardware, and oc is the cost of a multi-screen solution. This effectively reduces costs and reduces the failure rate of equipment. For example, in a microgrid with 50 single-cabinet energy storage systems, using a multi-cabinet single-screen solution instead of a one-cabinet one-screen solution can significantly reduce costs and potential failure points.

[0065] The software also performs communication integration and adaptation. When adding or reducing controllers, the software uses a dynamic topology adjustment algorithm to automatically sense the changes in the topology structure and adjust the response time formula according to the topology. Adjust the topology, where r is determined by the performance and processing speed of the software, tr is the adjustment time, and sr is the trigger time. This ensures normal communication between devices and guarantees the production consistency of multi-scenario products. For example, when a new single-cabinet energy storage system is added to the microgrid, the software can quickly adapt and maintain normal communication with all devices.

[0066] Effects brought about by adopting the above embodiments: The multi-cabinet single-screen solution effectively reduces costs and reduces the failure rate of equipment, which is particularly important in distributed energy storage systems because cost control and reliability are crucial to the overall performance and economic feasibility of the system. The touch screen facilitates monitoring and control of the energy storage system, reducing the need for complex cloud-based operations. In a microgrid environment, real-time monitoring and control are essential, which improves operation and maintenance efficiency. The touch screen can operate well even outdoors and in complex environments, ensuring continuous monitoring and control of the energy storage system. The ability of the software to adapt to different touch screens and maintain communication integrity under different topologies ensures stable operation of the energy storage system, which allows the energy storage system to be seamlessly integrated into the microgrid and enables efficient energy management strategies to be implemented.

[0067] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the same elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A design of a touch screen energy storage system topology, characterized in that: The design includes: Choose a touch screen with an Ethernet port and using Ethernet communication. It is not limited to using Modbus communication protocol to interact with energy storage system equipment. The data transmission rate between the touch screen and each device is Where a is a specific correction coefficient, d is the total amount of data transmission, and t is the transmission time. This formula ensures efficient data exchange speed and defines the touch screen data exchange accuracy index. Where e is the accuracy coefficient, r is the amount of data transmitted correctly, and d is the total amount of data, which measures the accuracy of data interaction; Define single-cabinet energy storage systems, including single-cabinet controllers, PCS and battery BMS equipment, as well as single-station energy storage systems composed of multiple single-cabinet energy storage systems; Design a single-cabinet energy storage system topology with touch screen direct control, where the touch screen and single-cabinet controller are directly connected via Ethernet; Design a single-station energy storage system topology controlled directly by a touch screen, where the touch screen communicates with multiple single-cabinet controller devices through a switch; Design a single-station energy storage system topology with indirect touch screen control. The multi-cabinet controller communicates with the single-cabinet controller through a switch, and the touch screen communicates with the multi-cabinet controller. Define hardware products from a software perspective, adopt a multi-cabinet single-screen solution to avoid the increase in costs and failure points for one cabinet and one screen, and define the cost reduction ratio Where g is the cost coefficient, sc is the cost of a single-screen solution, and oc is the cost of a multi-screen solution. The cost advantage is reflected by the cost reduction ratio C; Through the touch screen plus software protocol adaptation method, the adaptation requirements of various touch screen human-computer interaction are realized. There is no need to develop multiple sets of software for different energy management systems. The software protocol adaptability is high. Where b is the adaptation coefficient, n is the number of successfully adapted parameters, and m is the total number of parameters. The software protocol adaptation degree P is used to measure the effect of software protocol adaptation. The software integrates and adapts communications to ensure that adding or reducing multiple controllers does not affect the overall equipment topology design and the overall equipment stability index. Where c is the stability coefficient, s is the stable operation time, and f is the number of failures. The index S is used to evaluate the stability of the equipment topology design.

2. The design of a touch screen energy storage system topology according to claim 1 is characterized in that: The touch screen is used in the system to collect information about the energy storage device, including but not limited to the working status of the energy storage system, fault alarm information, and historical operation records and fault alarm log information. At the same time, it can issue shutdown and power commands to the energy storage system, and its own software realizes the business functions of data storage and alarm fault indication. The specific implementation method of data collection and command issuance is optimized based on the adopted communication protocol and topology structure. The touch screen data collection frequency is Among them, h is the collection coefficient, di is the amount of data collected, and ti is the collection time interval. This formula can be used to reasonably adjust the data collection frequency.

3. The design of a touch screen energy storage system topology according to claim 1 is characterized in that: The single-cabinet controller device is used as a control device in the single-cabinet energy storage system. It controls the execution of the power on / off instructions and power instructions of the lower-level devices, and communicates with the touch screen to execute the touch screen acquisition and control instructions, or communicates with the multi-cabinet controller to execute the acquisition and control instructions of the multi-cabinet controller. A specific instruction processing module is set inside it. The module parses and processes the received instructions, distributes the instructions to the corresponding lower-level devices according to the preset rules, and passes them to the touch screen and the multi-cabinet controller upward. The data interaction between this module and other components follows strict communication protocols and data format rules, which defines the single-cabinet controller instruction processing efficiency. Where k is the efficiency coefficient, ii is the number of instructions processed, and tii is the processing time, which is used to measure the instruction processing capability of a single cabinet controller.

4. The design of a touch screen energy storage system topology according to claim 1 is characterized in that: The multi-cabinet controller device is used as a control device in a single-station multi-parallel energy storage system. It controls the single-cabinet controller device below to execute the power on / off instructions and power instructions of the lower equipment in the sub-cabinet, and communicates with the touch screen to execute the collection and control instructions of the touch screen. It is used when energy management is required and the site scale exceeds the maximum control device scale of the single-station control system. It has a data integration function to comprehensively process the information collected from each single-cabinet controller device to generate a unified data format that meets the requirements of the touch screen. The multi-cabinet controller data integration degree Where l is the integration coefficient, ci is the amount of data after integration, and tiii is the integration time, which is used to evaluate the data integration capability of the multi-cabinet controller.

5. The design of a touch screen energy storage system topology according to claim 1 is characterized in that: In the single-cabinet energy storage system topology controlled by touch screen, the touch screen and the single-cabinet controller device collect energy storage system data through Ethernet direct connection, and control the PCS and BMS through the single-cabinet controller device to realize power on / off and reset operations. The Ethernet direct connection method adopts a new link layer protocol, which guarantees the data transmission rate and reduces the bit error rate, and follows a specific handshake and disconnection process when establishing and disconnecting the connection, defining the Ethernet direct connection reliability index Where m is the reliability coefficient, se is the amount of data successfully transmitted, and te is the total amount of data attempted to be transmitted, which measures the reliability of Ethernet direct connection.

6. The design of a touch screen energy storage system topology according to claim 1 is characterized in that: In the single-station energy storage system topology directly controlled by the touch screen, the touch screen communicates with several single-cabinet controller devices through the switch to collect energy storage system data, and sends collection and control instructions to the lower-level devices through each single-cabinet controller. The switch adopts an intelligent traffic distribution algorithm to dynamically allocate network bandwidth according to the data traffic requirements of each single-cabinet controller device. At the same time, a cache mechanism is set inside the switch to cache data that cannot be transmitted in time and wait for the right time to transmit. The switch traffic distribution rationality index Where n is the allocation coefficient, ai is the reasonably allocated data flow, and tiiv is the total data flow, which is used to evaluate the rationality of the switch's traffic allocation.

7. The design of a touch screen energy storage system topology according to claim 1 is characterized in that: In the single-station energy storage system topology indirectly controlled by the touch screen, the multi-cabinet controller device communicates with the single-cabinet controller device via Ethernet through the switch, and the multi-cabinet controller device collects information of each single-cabinet energy storage system device in the parallel machine, and then integrates the information required by the touch screen. The touch screen device connected to the same switch communicates with the multi-cabinet controller device, and the touch screen collects the integrated energy storage system data, and sends the instructions for controlling the lower-level equipment to the multi-cabinet energy storage system for comprehensive distribution. The multi-cabinet controller device adopts a unique data analysis algorithm when integrating information, extracts the key information required by the touch screen from the single-cabinet energy storage system equipment information, and adopts an information compression algorithm to reduce the data transmission volume when transmitting information to the touch screen, and defines the information compression ratio Where o is the compression coefficient, oi is the original data volume, and ii is the compressed data volume, which is used to measure the information compression effect.

8. The design of a touch screen energy storage system topology according to claim 1 is characterized in that: In the multi-cabinet single-screen solution, the hardware products are defined from the software perspective, and the flexible configuration and control of the hardware equipment are realized through the specific software architecture design. The software architecture includes the device driver module, the data processing module and the instruction execution module. The modules exchange data and call functions through specific interfaces. When the software is updated and upgraded, the remote update mechanism can be used to update and upgrade the software without disassembling and reinstalling the hardware equipment, thus defining the software update efficiency. Where p is the update coefficient, ui is the amount of updated data, and tii is the update time to evaluate the software update efficiency.

9. The design of a touch screen energy storage system topology according to claim 1, characterized in that: In the touch screen plus software protocol adaptation method, the software protocol adaptation adopts a protocol conversion algorithm to convert the communication protocols supported by different touch screens into a unified internal protocol, and in the protocol conversion process, a data verification mechanism is used to verify the converted protocol data. At the same time, a protocol adaptation database is set inside the software to store the communication protocol information of different touch screens and the corresponding conversion rules, and define the protocol conversion accuracy. Where q is the accuracy coefficient, sc is the amount of data converted correctly, and tc is the total amount of data converted, which measures the accuracy of protocol conversion.

10. The design of a touch screen energy storage system topology according to claim 1, characterized in that: The software integrates and adapts communications so that adding or reducing multiple controllers will not affect the overall device topology design. Through a dynamic topology adjustment algorithm, when adding or reducing multiple controllers, the software automatically senses the changes in the topology structure and adjusts the topology structure. During the adjustment process, a data synchronization mechanism is used to ensure data consistency between devices and define the topology adjustment response time. Where r is the response coefficient, tr is the adjustment time, and sr is the trigger time, which are used to evaluate the response speed of topology adjustment.

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