Topological architecture of 100kWh optical storage integrated cabinet

Abstract

The invention discloses a topological architecture of a 100kWh optical storage integrated cabinet, and relates to the technical field of optical storage integrated cabinets, and the adaptive design of a target enterprise is realized through four steps: 1, according to the electrical load characteristics of the enterprise, determining the parameters of core components such as a battery pack and the like, and completing physical integration, including a 50kW hybrid inverter adaptive to photovoltaic installation and a two-stage fire extinguishing system; 2, constructing a power distribution network according to enterprise power distribution standards, deploying a protection combination of a direct current circuit breaker, double contactors and a fuse, dividing a high-voltage unit, an alternating current unit and an auxiliary unit, and configuring an emergency UPS (Uninterrupted Power Supply); 3, deploying an EMS and BMS secondary architecture based on an enterprise energy consumption mode, and setting scheduling strategies such as peak-valley arbitrage and a multi-protocol communication mechanism; and fourthly, safety protection is achieved through a two-stage aerosol fire extinguishing system, a multi-dimensional environment monitoring device and three-stage linkage protection logic. The architecture gives consideration to integrated design and enterprise customization requirements, and the reliability and economy of the system are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of light storage integrated cabinet, and particularly relates to a 100 kWh light storage integrated cabinet topology architecture. BACKGROUND

[0002] With the integration of photovoltaic and energy storage technologies, the demand for integrated power equipment in industrial and off-grid scenarios is increasingly urgent. The traditional photovoltaic and energy storage system adopts a split design, which is composed of independent photovoltaic inverters, energy storage converters, battery packs, control systems and fire-fighting devices. The following significant defects exist: first, the system integration is low, complex wiring connections are required between each device, the land occupation is large, and it is difficult to adapt to space-limited scenarios such as industrial and commercial parks, islands and the like; second, the energy conversion efficiency is low, and the poor interface matching between devices leads to an increase of 5%-8% in energy loss; third, the operation and maintenance cost is high, the dispersed components need to be individually debugged and maintained, and there is a lack of unified monitoring platform, so the fault response is lagging. Therefore, a 100 kWh light storage integrated cabinet topology architecture is needed.

[0003] The prior art, such as the invention patent application published as CN105117835A, discloses a power grid information room three-dimensional visualization management platform based on B / S architecture. The user interaction module is used for operation and display, the data communication module is used as the center to establish a connection with four 3D visualization management modules, real-time interaction data is achieved, and three-dimensional visualization management of the power grid information room is achieved. In the present application, the visualization topology management module is used to generate 3D scene data, which is returned to the user interaction module for display, so as to realize the visualization of the topology structure of the computer room, i.e. the 3D visualization display of the spatial relationship of the computer room, the equipment in the computer room, the ports of the equipment, and the connection information of the ports, realize the management consistent with the 3D design drawing, and integrate the management of the topology structure and the visualization management of the computer room itself. In addition, the available space management module reads the remaining space of the cabinet from the foreground data cache module, temporarily hides the cabinet, and draws columnar bodies with different heights at the position of the original cabinet to represent the occupancy rate of the cabinet, so as to realize the display of the available space of the cabinet.

[0004] For the above-mentioned scheme, the present inventors find that the above-mentioned technology at least has the following technical problems: 1. The prior art has significant limitations in system integration. The traditional photovoltaic and energy storage system adopts a split design, and the core components such as photovoltaic inverters, energy storage converters and battery packs are arranged in a dispersed manner, which requires complex electrical connection and debugging on site. Not only does this lead to an installation period of more than 30%, but it also increases the fault points due to wiring confusion. At the same time, the equipment occupies a large area, which is not suitable for space-limited industrial and commercial roof or workshop scenarios, and the parameter matching degree between each component is low, which leads to a loss of energy conversion efficiency of up to 5%-8%, making it difficult to meet the needs of small-scale industrial and commercial storage for compactness and high efficiency.

[0005] 2、The prior art has obvious short board on the safety protection system. The fire protection system is mostly single cabinet level protection, lacking PACK level and cabinet level two-stage linkage design, and the early inhibition ability of the battery cluster internal thermal runaway is insufficient; the electrical protection mechanism mostly relies on single circuit breaker or fuse, the multi-stage protection logic is disconnected, and the response delay (usually >10ms) is easy to occur during short circuit fault, and even causes secondary risks such as fuse dry burning and arc. In addition, the environmental monitoring is mostly limited to single point temperature sensing, lacking multi-dimensional parameter linkage such as combustible gas and smoke sensing, and it is difficult to realize early warning of safety hazards.

[0006] 3、The prior art has many bottlenecks in energy management and system adaptability. The traditional EMS scheduling strategy is fixed, and cannot be dynamically adjusted according to the target enterprise peak-valley electricity price, load fluctuation and other energy use modes, and the peak-valley arbitrage income is reduced by 15%-20%; the BMS is mostly single-stage architecture, and the sampling precision of battery voltage and temperature is insufficient, resulting in poor battery balancing effect and shortened cycle life to below 3000 times. At the same time, the communication protocol compatibility is poor, it is difficult to access the existing energy management platform of the enterprise, and the on-off grid switching time is >50ms when multiple machines are connected in parallel, which cannot meet the requirement of uninterrupted power supply in precision manufacturing and other scenes SUMMARY

[0007] In view of the above technical deficiencies, the purpose of the present application is to provide a 100kWh photovoltaic storage integrated cabinet topology architecture.

[0008] To solve the above technical problems, the technical scheme adopted by the present application is as follows: the present application provides a 100kWh photovoltaic storage integrated cabinet topology architecture, comprising: Step one, core component selection and integration: according to the corresponding electrical load characteristics of the target enterprise, the corresponding parameter specifications of the photovoltaic storage integrated cabinet of the target enterprise are determined, and the physical integration and initial configuration of the photovoltaic storage integrated cabinet corresponding to the target enterprise are completed.

[0009] Step two, building of electrical architecture: after the physical integration and initial configuration of the photovoltaic storage integrated cabinet corresponding to the target enterprise are completed, the photovoltaic storage integrated cabinet power distribution network corresponding to the target enterprise is constructed according to the target enterprise power distribution standard, so as to complete the electrical connection and protection mechanism deployment of the photovoltaic storage integrated cabinet corresponding to the target enterprise.

[0010] Step three, configuration of energy management system: used for obtaining the energy use mode corresponding to the target enterprise, so as to deploy the EMS and BMS two-stage architecture corresponding to the photovoltaic storage integrated cabinet, and then set the energy scheduling strategy and communication protocol adapted to the photovoltaic storage integrated cabinet of the target enterprise.

[0011] Step four, deployment of safety protection system: analyze the installation of two-stage fire protection system and environmental monitoring device for the photovoltaic storage integrated cabinet of the target enterprise, and analyze the configuration linkage protection logic corresponding to the photovoltaic storage integrated cabinet of the target enterprise.

[0012] The beneficial effects of the present application are: 1. The embodiments of the present application realize precise matching with the target enterprise power load through customized component selection and integrated design. For daily power demand of 50-100kWh, 280Ah battery cells are used to form a 107.52kWh battery pack, and a 50kW hybrid inverter is matched, which not only avoids resource waste caused by capacity redundancy, but also maximizes the photovoltaic consumption efficiency through 4-way photovoltaic MPPT, which improves the energy utilization efficiency by more than 15% compared with the traditional general energy storage system. At the same time, the physical architecture of the factory pre-integration greatly reduces the on-site installation time, and the single-cabinet deployment period is shortened to within 8 hours, which reduces the installation cost by 60% compared with the split system, and supports multi-cabinet parallel expansion, and flexibly adapts to the future load growth demand of enterprises.

[0013] 2. The embodiments of the present application, in terms of electrical safety and intelligent management, the three-level power distribution network and the two-level control architecture formed by the present scheme form an efficient cooperation mechanism. The high-voltage box adopts a hierarchical protection design of "circuit breaker + contactor + fuse", which realizes precise isolation of short-circuit faults through I 2 t value matching, cooperates with the direct-current UPS module to ensure the power supply continuity of key equipment, and shortens the fault response time to within 5ms compared with the traditional power distribution scheme. The cooperative control of EMS and BMS supports 12 strategies such as peak-valley arbitrage and demand management, combined with edge computing and multi-protocol communication, which can not only optimize the charging and discharging plan in real time to reduce electricity cost by more than 30%, but also seamlessly connect to enterprise energy management platforms to realize remote operation and maintenance and dynamic adjustment of strategies, greatly reducing the cost of manual intervention.

[0014] 3. The embodiments of the present application, the multi-level design of the safety protection system significantly improves the system operation reliability. The two-stage aerosol fire extinguishing system and the multi-dimensional environment monitoring device form a three-dimensional protection network, the PACK-level fire extinguishing needle responds quickly to the initial stage of battery thermal runaway, the cabinet-level full-submersion design realizes fire spread containment, and cooperates with the three-level linkage protection logic to control the fire response time within 3s. The hierarchical early warning mechanism accurately triggers the alarm strategy according to the fault level, which not only avoids minor abnormal interference to enterprise production, but also links the fire extinguishing system and emergency power supply in emergency to ensure the continuous operation of precision equipment, which reduces the safety accident loss by more than 80% compared with the traditional energy storage system, and provides an energy solution for industrial and commercial users that combines economy and safety. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0016] Figure 1 The method of the present application implements the step flow chart. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0018] Embodiments of the present application Figure 1 As shown in the figure, a 100 kWh light storage integrated cabinet topology architecture includes: step one, core component selection and integration: according to the corresponding electrical load characteristics of the target enterprise, the parameters of the corresponding light storage integrated cabinet of the target enterprise are determined, and the physical integration and initial configuration of the corresponding light storage integrated cabinet of the target enterprise are completed.

[0019] In a specific embodiment, the completion of the physical integration and initial configuration of the corresponding light storage integrated cabinet of the target enterprise has the following specific configuration process: A1, for the daily electricity demand of 50-100 kWh of the target enterprise, the battery pack capacity corresponding to the light storage integrated cabinet of the target enterprise is analyzed, and the light storage integrated cabinet of the target enterprise is designed according to the corresponding battery pack capacity.

[0020] A2, configure a 50kW hybrid inverter that adapts to the installed capacity of the target enterprise photovoltaic, including 4 photovoltaic MPPT and BACKUP interface, matching a 3kW liquid cooling unit and a PACK / cabinet level dual aerosol system that meets the fire rating of the target enterprise.

[0021] In a specific embodiment, the battery pack capacity corresponding to the light storage integrated cabinet of the target enterprise has the following specific design process: obtain the single cell capacity, series voltage and series number of the target enterprise, and substitute into the calculation formula: the battery pack capacity corresponding to the light storage integrated cabinet of the target enterprise = single cell capacity x series voltage x series number.

[0022] It should be noted that the single cell capacity can be directly consulted from the specification provided by the battery manufacturer or obtained by communicating with the supplier, and the series voltage needs to be obtained by specifying the chemical system of the cell: the nominal voltage of the lithium iron phosphate battery is 3.2V, and the voltage is about 3.65V after being fully charged; the ternary lithium battery is usually 3.6-3.7V. This parameter directly determines the total voltage level of the battery cluster, for example, the total voltage of 4 series lithium iron phosphate battery is 12.8V, which can adapt to 12V system demand.

[0023] The determination of the number of series needs to be based on the voltage demand of the target enterprise and the voltage of a single cell. For example, if the system requires a total voltage of 48V, and a 3.2V lithium iron phosphate battery is used, the number of series = 48V ÷ 3.2V = 15 series. At the same time, it is necessary to verify the voltage fluctuation range after charging and discharging, for example, the full voltage of a 15-series lithium iron phosphate battery pack can reach 54.75V, and it is necessary to ensure that the PCS input voltage range is compatible. In addition, the number of series also needs to match the parameters of protective devices such as fuses, contactors, etc., for example, the circuit breaker I 2 The t value needs to be lower than the PACK level fuse to achieve graded fuse protection in the event of a short circuit.

[0024] Step two, building the electrical architecture: after the physical integration and initial configuration of the target enterprise's photovoltaic storage integrated cabinet are completed, the target enterprise's photovoltaic storage integrated cabinet power distribution network is constructed according to the target enterprise's power distribution standard, thereby completing the target enterprise's photovoltaic storage integrated cabinet electrical connection and protection mechanism deployment.

[0025] In a specific embodiment, the construction of the target enterprise's photovoltaic storage integrated cabinet power distribution network is as follows: B1, the target enterprise's photovoltaic storage integrated cabinet is connected by an integrated wiring harness that meets the target enterprise's power distribution safety standard, and a "DC circuit breaker + double contactor + positive fuse" protection combination is configured, wherein the circuit breaker I 2 The t value is lower than the PACK level fuse, and the relay's short-circuit current resistance is greater than the fuse I 2 t value.

[0026] B2, the target enterprise's photovoltaic storage integrated cabinet power distribution is divided into high-voltage units, AC units, and auxiliary units according to the target enterprise's grid access specification, and a DC UPS module that meets the enterprise's emergency power supply requirements.

[0027] B3, deploy voltage sampling and Hall current detection devices that meet the target enterprise's measurement standards, and realize data interaction between BMS and PCS through CAN interface.

[0028] Step three, configuration of the energy management system: used to obtain the target enterprise's energy consumption mode, thereby deploying the EMS and BMS two-level architecture of the photovoltaic storage integrated cabinet, and then setting the energy dispatching strategy and communication protocol adapted to the target enterprise's photovoltaic storage integrated cabinet.

[0029] In a specific embodiment, the deployment of the EMS and BMS two-level architecture of the photovoltaic storage integrated cabinet is as follows: C1, the BMS of the target enterprise's photovoltaic storage integrated cabinet adopts a two-level architecture according to the target enterprise's battery management accuracy requirements: the battery cluster management master module is responsible for charging and discharging protection logic operation, equalization strategy execution, and instruction interaction with the PCS, and the battery management slave module collects 180 cell voltages and 36 temperature data according to the enterprise's monitoring density requirements, and supports cell equalization function.

[0030] C2, the EMS deployment edge computing unit of the target enterprise light storage integrated cabinet, adapts to the data processing needs of the target enterprise, supports arithmetic operations, logical judgments and custom algorithm configuration, and can analyze enterprise energy consumption mode data in real time.

[0031] C3, the target enterprise light storage integrated cabinet realizes communication between BMS master and slave modules through CAN bus, uses Ethernet interface to connect EMS and local controller, and built-in full-network 4G module realizes data interaction with the target enterprise cloud platform, ensuring that the response delay of control instructions is ≤100ms.

[0032] In a specific embodiment, the energy scheduling strategy and communication protocol of the target enterprise light storage integrated cabinet are set as follows: D1, the energy scheduling strategy of the target enterprise light storage integrated cabinet is to set the charging and discharging plan according to the peak and valley electricity price period, configure peak clipping and valley filling, anti-backflow and emergency standby power mode, and support enterprise-defined strategy weight.

[0033] D2, the communication protocol of the target enterprise light storage integrated cabinet is compatible with the existing system of the target enterprise: MODBUS RTU / TCP protocol is used to realize communication with local instruments, IEC104 protocol is used to interface with power grid scheduling platform, and MQTT protocol is used to access enterprise energy management cloud platform. The protocol conversion delay is ≤50ms.

[0034] D3, the configuration data encryption transmission mechanism of the target enterprise light storage integrated cabinet supports OTA remote strategy update, and reserves virtual power plant and demand side response platform access interface.

[0035] Step four, deployment of security protection system: analyze the target enterprise light storage integrated cabinet installation double-stage fire fighting system and environmental monitoring device, and analyze the configuration linkage protection logic corresponding to the target enterprise light storage integrated cabinet.

[0036] In a specific embodiment, the target enterprise light storage integrated cabinet environmental monitoring device is analyzed as follows: multi-dimensional monitoring devices are deployed in the target enterprise light storage integrated cabinet: one NTC temperature sensor is set for every 20 battery cells inside the battery pack, infrared thermometers are installed at the four corners of the cabinet body to collect battery cell and environmental temperature in real time; 3-way combustible gas detectors are deployed above the battery cluster; 2-way photoelectric smoke detectors are installed at the top of the cabinet body, and pressure sensors are configured at the outlet of the aerosol device.

[0037] The sampling frequency of all monitoring devices is ≥1Hz, and the data is uploaded to the BMS through the CAN bus. When the parameter exceeds the threshold set by the target enterprise, a warning is triggered.

[0038] In one specific embodiment, the configuration linkage protection logic corresponding to the target enterprise optical storage integrated cabinet is analyzed, and the specific analysis process is as follows: a three-level linkage protection logic is constructed for the target enterprise optical storage integrated cabinet: when the cell voltage anomaly, temperature difference ≥5℃ is monitored, the first level protection is triggered, the BMS immediately cuts off the corresponding battery cluster charging and discharging circuit, and the equalization function is started at the same time.

[0039] If the first level protection fails, when the short circuit current ≥200A, voltage fluctuation is more than ±15%, the second level protection is triggered, the optical storage integrated cabinet breaker is tripped within 5ms, the double contactor is synchronously opened, and the circuit isolation is realized by cooperating with the fuse.

[0040] When the temperature ≥60℃ or the gas concentration ≥20%LEL, the third level protection is triggered, the inlet and outlet air fans are started to force ventilation, and the PACK level aerosol is triggered within 10s if the condition is not alleviated, if the fire spreads, the cabinet level fire extinguishing and power cut-off are started, at the same time, the alarm is sent to the target enterprise monitoring platform through the EMS, the BACKUP power supply switching is synchronously triggered when the power grid fails, and the warning is given according to the protection level corresponding to the target enterprise optical storage integrated cabinet.

[0041] In one specific embodiment, the warning is given according to the protection level corresponding to the target enterprise optical storage integrated cabinet, and the specific warning process is as follows: S1, if the target enterprise optical storage integrated cabinet triggers the first level protection, the local controller starts the cabinet face yellow indicator light flashing, sends the equalization state message to the BMS through the CAN bus, the EMS system displays the cell abnormal information on the local man-machine interface, uploads the warning data to the enterprise cloud platform, records the abnormal time and recovery state, and does not trigger the sound and light alarm to avoid interfering with the normal production of the enterprise.

[0042] S2, if the target enterprise optical storage integrated cabinet triggers the second level protection, the local controller starts the red indicator light constant and intermittent alarm with the buzzer, the EMS immediately pushes the third level alarm information to the enterprise monitoring platform, synchronously suspends the charging and discharging operation of the cabinet body parallel group, notifies the photovoltaic inverter to reduce power input through the MODBUS protocol, and the remote operation and maintenance platform automatically generates a maintenance work order and distributes it to the responsible person. The alarm lasts until the fault is eliminated and manually reset.

[0043] S3, if the target enterprise optical storage integrated cabinet triggers the third level protection, the local high decibel sound and light alarm is started, the cabinet emergency indicator light is fully bright, the EMS sends an emergency alarm to the enterprise safety management system and the mobile phone of the responsible person through the 4G module, links the emergency response system of the enterprise fire control room, suspends the power supply of unnecessary production equipment in the area, and labels it as "emergency state" on the cloud platform and triggers the work order that must be processed within 24 hours. The warning can be removed only after the fire extinguishing system is reset and the environmental monitoring data returns to normal.

[0044] The above merely illustrates and describes the concept of the present application, and those skilled in the art can make various modifications or supplements to the described specific embodiments or adopt similar ways to replace, as long as the modifications or supplements do not deviate from the concept of the present application or exceed the scope defined by the specification, and the modifications or supplements shall belong to the protection scope of the present application.

Claims

1. A 100 kWh integrated PV and storage cabinet topology architecture, characterized by, Comprise: Step one, core component selection and integration: according to the corresponding electrical load characteristics of the target enterprise, determine the corresponding parameter specification of the target enterprise photovoltaic storage integrated cabinet, complete the physical integration and initial configuration of the target enterprise photovoltaic storage integrated cabinet; Step two, the construction of electrical architecture: after the physical integration and initial configuration of the target enterprise photovoltaic storage integrated cabinet are completed, according to the target enterprise power distribution standard, the target enterprise photovoltaic storage integrated cabinet power distribution network is constructed, and the target enterprise photovoltaic storage integrated cabinet electrical connection and protection mechanism deployment are completed; Step three, the configuration of energy management system: used to obtain the energy consumption mode of the target enterprise, so as to deploy the EMS and BMS secondary architecture of the photovoltaic storage integrated cabinet, and then set the energy scheduling strategy and communication protocol suitable for the target enterprise photovoltaic storage integrated cabinet; Step four, the deployment of security protection system: analyze the installation of double stage fire fighting system and environmental monitoring device of target enterprise photovoltaic storage integrated cabinet, and analyze the configuration linkage protection logic corresponding to target enterprise photovoltaic storage integrated cabinet.

2. The 100 kWh integrated PV and storage cabinet topology architecture of claim 1, wherein, The specific configuration process of completing the physical integration and initial configuration of the target enterprise photovoltaic storage integrated cabinet is as follows: A1, for the target enterprise daily electricity demand of 50-100kWh, analyze the battery capacity corresponding to the target enterprise photovoltaic storage integrated cabinet, and design the target enterprise photovoltaic storage integrated cabinet according to the corresponding battery capacity; A2, configure 50kW hybrid inverter suitable for target enterprise photovoltaic installation capacity, including 4-way photovoltaic MPPT and BACKUP interface, matching 3kW liquid cooling unit and PACK / cabinet level double aerosol system meeting target enterprise fire rating.

3. The 100 kWh integrated PV and storage cabinet topology of claim 2, wherein, The specific design process of the battery capacity corresponding to the target enterprise photovoltaic storage integrated cabinet is as follows: Get the target enterprise single cell capacity, series voltage and series number, and substitute into the calculation formula: target enterprise photovoltaic storage integrated cabinet corresponding battery capacity = single cell capacity × series voltage × series number.

4. The 100 kWh integrated PV and storage cabinet topology of claim 3, wherein, The specific construction process of constructing the target enterprise photovoltaic storage integrated cabinet power distribution network is as follows: B1, the target enterprise light storage integrated cabinet adopts an integrated wiring harness connection that adapts to the target enterprise power distribution safety standard, and is configured with a "DC circuit breaker + double contactor + positive electrode fuse" protection combination, wherein the circuit breaker I 2 t value is lower than the PACK level fuse, and the relay short-circuit current resistance is greater than the fuse I 2 t value; B2, the target enterprise photovoltaic storage integrated cabinet power distribution is divided into high voltage unit, alternating current unit and auxiliary unit according to the target enterprise power grid access specification, and the direct current UPS module meeting the emergency power supply requirement of enterprise; B3, deploy voltage sampling and Hall current detection device meeting the target enterprise metering standard, realize data interaction between BMS and PCS through CAN interface.

5. The 100 kWh integrated PV and storage cabinet topology of claim 4, wherein, The specific deployment process of deploying the EMS and BMS secondary architecture corresponding to the photovoltaic storage integrated cabinet is as follows: C1, the BMS of target enterprise photovoltaic storage integrated cabinet adopts two level architecture according to the target enterprise battery management accuracy requirement: battery cluster management master module is responsible for charge and discharge protection logic operation, equalization strategy execution and instruction interaction with PCS, battery management slave module collects 180 cell voltage and 36 temperature data according to enterprise monitoring density requirement, and supports cell equalization function; C2, the EMS of target enterprise photovoltaic storage integrated cabinet deploys edge computing unit, adapts to target enterprise data processing requirement, supports arithmetic operation, logic judgment and custom algorithm configuration, and can realize real-time analysis of enterprise energy consumption mode data; C3, the target enterprise light storage integrated cabinet realizes communication between BMS master and slave modules through CAN bus, adopts Ethernet interface to connect EMS and local controller, and realizes data interaction with the target enterprise cloud platform by built-in full-network 4G module, so as to ensure that the response delay of control command is less than or equal to 100 ms.

6. The 100 kWh integrated PV and storage cabinet topology of claim 5, wherein, The energy scheduling strategy and communication protocol adapted to the target enterprise light storage integrated cabinet are set as follows: D1, the energy scheduling strategy corresponding to the target enterprise light storage integrated cabinet is: setting the charging and discharging plan according to the peak-valley electricity price period, configuring peak load shifting, anti-backflow and emergency standby power mode, and supporting enterprise self-defined strategy weight; D2, the communication protocol of the target enterprise light storage integrated cabinet is compatible with the existing system of the target enterprise: MODBUS RTU / TCP protocol is adopted to realize communication with local instruments, IEC104 protocol is connected with power grid dispatching platform, and MQTT protocol is connected with enterprise energy management cloud platform, and the protocol conversion delay is less than or equal to 50 ms; D3, the configuration data encryption transmission mechanism of the target enterprise light storage integrated cabinet supports OTA remote strategy update, and simultaneously reserves access interfaces of virtual power plant and demand side response platform.

7. The 100 kWh integrated PV and storage cabinet topology of claim 6, wherein, The double-stage fire extinguishing system for the target enterprise light storage integrated cabinet is analyzed as follows: The PACK level and cabinet level double-aerosol fire extinguishing system is configured for the target enterprise light storage integrated cabinet: the PACK level aerosol device is integrated in each 1P60S battery pack, adopts pulse jet design, releases fire extinguishing medium quickly at the initial stage of battery thermal runaway, and the coverage range is accurate to the battery cluster; the cabinet level aerosol device is installed at the central position of the top of the cabinet, adopts full-submersion layout, and the jet radius is greater than or equal to 1.5 m; the double systems are linked through the fire control controller, the feedback signal is fed back to the cabinet level system within 100 ms after the PACK level is triggered, and if the fire is not controlled, the cabinet level fire extinguishing is automatically started, and the manual forced starting function is also supported. 8.The 100kWh integrated PV and storage cabinet topology architecture of claim 7, wherein, The environmental monitoring device for the target enterprise light storage integrated cabinet is analyzed as follows: Multi-dimensional monitoring devices are deployed in the target enterprise light storage integrated cabinet: one NTC temperature sensor is arranged every 20 battery cells in the battery pack, infrared temperature measuring instruments are installed at the four corners of the cabinet, and the battery cell and environmental temperature are collected in real time; three combustible gas detectors are arranged above the battery cluster; Two photoelectric smoke detectors are installed on the top of the cabinet, and pressure sensors are arranged at the outlets of the aerosol devices; The sampling frequency of all monitoring devices is greater than or equal to 1 Hz, and the data is uploaded to the BMS through the CAN bus, and the prewarning is triggered when the parameters exceed the threshold set by the target enterprise. 9.The 100kWh integrated PV and storage cabinet topology architecture of claim 8, wherein, The corresponding configuration linkage protection logic of the target enterprise light storage integrated cabinet is analyzed as follows: The three-level linkage protection logic is constructed for the target enterprise light storage integrated cabinet: When the battery cell voltage is abnormal and the temperature difference is greater than or equal to 5℃, the first level protection is triggered, the BMS immediately cuts off the charging and discharging circuit of the corresponding battery cluster, and the equalization function is started at the same time; If the first level protection fails, when the short-circuit current is greater than or equal to 200 A and the voltage fluctuation is greater than or equal to ±15%, the second level protection is triggered, the light storage integrated cabinet breaker is tripped within 5 ms, the double contactors are simultaneously opened, and the circuit is isolated by cooperating with the fuse. When the temperature is ≥ 60℃ or the gas concentration is ≥ 20% LEL, the third-level protection is triggered, the air supply and exhaust fans are started to force ventilation, and if the fire does not subside within 10s, the PACK-level aerosol is triggered, if the fire spreads, the cabinet-level fire extinguishing is started and the power supply of the whole cabinet is cut off, at the same time, an alarm is sent to the target enterprise monitoring platform through the EMS, the BACKUP power supply is triggered synchronously in the event of power failure, and pre-warning is carried out according to the protection level corresponding to the target enterprise light storage integrated cabinet. 10.The 100kWh integrated PV and storage cabinet topology architecture of claim 9, wherein, The pre-warning according to the protection level corresponding to the target enterprise light storage integrated cabinet is specifically as follows: S1, if the target enterprise light storage integrated cabinet triggers the first-level protection, the local controller starts the cabinet face yellow indicator light to flash, sends the balancing state message to the BMS through the CAN bus, the EMS system displays the cell abnormal information on the local man-machine interface, at the same time, the warning data is uploaded to the enterprise cloud platform, the abnormal time and recovery state are recorded, and the sound and light alarm is not triggered to avoid interfering with the normal production of the enterprise; S2, if the target enterprise light storage integrated cabinet triggers the second-level protection, the local controller starts the red indicator light to constantly light with intermittent buzzer alarm, the EMS immediately pushes the third-level alarm information to the enterprise monitoring platform, synchronously suspends the charging and discharging operation of the cabinet body parallel group, notifies the photovoltaic inverter to reduce power input through the MODBUS protocol, the remote operation and maintenance platform automatically generates a maintenance work order and distributes it to the responsible person, and the alarm continues until the fault is eliminated and manually reset; S3, if the target enterprise light storage integrated cabinet triggers the third-level protection, the local high-decibel sound and light alarm is started, the cabinet emergency indicator light is fully lit, the EMS sends an emergency alarm to the enterprise safety management system and the mobile phone of the responsible person through the 4G module, links the emergency response system of the enterprise fire control room, suspends the power supply of unnecessary production equipment in the region, at the same time, marks it as "emergency state" on the cloud platform and triggers the work order that must be processed within 24 hours, and the pre-warning can be released only after the fire extinguishing system is reset and the environmental monitoring data is restored to normal.

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