Energy storage rapid replacement and energy complementation cooperative system suitable for multiple stations of transformer substation

Abstract

The invention relates to the technical field of energy storage replacement, and discloses an energy storage rapid replacement and energy supplement cooperation system suitable for multiple stations of a transformer substation, a standardized energy storage unit realizes cross-station interchange and universality through a uniform specification and a rapid plugging interface, and can accurately feed back a battery state in cooperation with an identity recognition module, so that the operation and maintenance cost and the downtime are reduced; the quick replacement mechanism realizes quick and safe disassembly and assembly of the energy storage unit by means of a guide sliding rail, an electromagnetic lock and a power-assisted driving piece, the operation convenience and safety are improved, the multi-mode energy complementing module integrates various energy complementing units, the energy complementing way is widened, and the quick replacement mechanism adapts to complex working conditions such as mains supply interruption and the like. The station adaptive control module can plan multi-station data as a whole to generate a scientific scheduling strategy, and in combination with an uninterrupted power supply switching design, the power supply continuity in the replacement process is ensured, the large-scale operation and maintenance efficiency and the power supply reliability of the energy storage system of the transformer substation are integrally and remarkably improved, and the operation and maintenance cost is reduced.

Description

Technical Field

[0001] This invention belongs to the field of mobile energy storage technology, specifically a rapid energy storage replacement and replenishment coordination system suitable for multiple substation sites. Background Technology

[0002] As power systems transform towards intelligence and distributed operation, substations, as core nodes for power transmission and distribution, face increasing demands for power supply reliability and operational flexibility. Energy storage systems are widely used in substation clusters, and their collaborative operation capabilities directly affect the stability and economy of regional power systems.

[0003] Existing substation energy storage systems have many shortcomings, which restrict their large-scale application and efficient operation at multiple sites. Developing a new type of energy storage system with comprehensive optimization functions has become an urgent technical problem to be solved.

[0004] The current technical solutions for energy storage needs in substations involve deploying energy storage systems within substations to achieve functions such as smoothing load fluctuations and ensuring emergency power supply through energy storage units. Replacing energy storage units involves manual handling and manual positioning and locking. Energy replenishment relies on a single mode of mains power. Energy storage systems mostly adopt a single-site independent control mode. The monitoring system mainly focuses on the overall voltage and remaining power of the energy storage units to support the operation and maintenance of the energy storage system.

[0005] The solution suffers from several key problems: First, the energy storage units have low standardization, are mostly customized designs with varying sizes and interfaces, making them non-interchangeable and increasing maintenance costs and downtime, failing to meet the needs of large-scale maintenance. Second, replacement is inefficient and lacks safety; manual operation is cumbersome and time-consuming, the lack of locking mechanisms poses safety hazards, and replacement requires power interruption, affecting normal service. Third, the energy replenishment mode is singular and lacks adaptability; it cannot replenish energy when mains power is interrupted, the energy replenishment module lacks effective protection mechanisms, and fault information feedback is not timely. Fourth, multi-site collaborative scheduling capabilities are lacking; there is no unified scheduling module, making it impossible to coordinate data to formulate scientific strategies or achieve remote centralized monitoring, resulting in delayed scheduling decisions. Fifth, status monitoring is incomplete, failing to cover key parameters of individual batteries, making it impossible to predict faults and capacity degradation, and making it difficult to issue timely replacement reminders, which can easily lead to system performance deterioration and safety accidents. Summary of the Invention

[0006] This invention provides a rapid energy storage replacement and replenishment coordination system applicable to multiple substation sites, solving the problem of low efficiency in existing single energy storage replacement and replenishment systems in substations.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A fast energy storage replacement and replenishment coordination system suitable for multiple substation sites includes a standardized energy storage unit, a fast replacement mechanism, a multi-mode replenishment module, and a site adaptation control module. The standardized energy storage unit adopts a uniform lithium iron phosphate battery pack, and is equipped with a standardized quick-plug interface and an identification module. The interface has a built-in anti-misplugging structure and a conductive protective layer. The identification module outputs the battery capacity, health status and cycle number. The quick-change mechanism includes a guide rail, a locking and positioning component, and an assist drive component. The guide rail is adapted to the installation dimensions of the standardized energy storage unit. The locking and positioning component realizes the quick locking and unlocking of the energy storage unit through an electromagnetic lock. The assist drive component provides auxiliary pushing force. The multi-mode power replenishment module integrates a fast charging unit, an on-board power replenishment interface, and a photovoltaic adapter unit for multi-mode power replenishment; The site adaptation control module integrates a processor and a communication module, collects load power and power demand duration data of each substation site, generates energy storage unit replacement priority and energy replenishment strategy, and simultaneously links with the emergency power supply system to achieve uninterrupted power supply switching during the energy storage unit replacement process.

[0008] Preferably, the standardized energy storage unit has uniform external dimensions and can withstand ≥3000 charge-discharge cycles.

[0009] Preferably, the locking and positioning component of the quick-change mechanism has dual safety protection, and the electromagnetic lock unlocking requires both a power interruption signal and a replacement authorization command to be satisfied simultaneously.

[0010] Preferably, the multi-mode energy replenishment module has a built-in charge and discharge protection circuit. When the energy storage unit is detected to be overcharged, overheated, or the input voltage is abnormal, the charging path is automatically cut off and an alarm is issued. At the same time, the fault information is recorded to the site adaptation control module.

[0011] Preferably, the site adaptation control module supports 4G / 5G remote communication, uploads the status of energy storage units and energy replenishment progress data of each site to the operation and maintenance management platform, and the platform remotely issues energy replenishment mode switching instructions and replacement scheduling instructions.

[0012] Preferably, the quick-plug interface of the standardized energy storage unit adopts an aviation plug structure, and the stripping length is controlled at the interface so that the wire diameter is not exposed.

[0013] Preferably, the multi-mode power replenishment module has an automatic power replenishment mode switching function. When the mains power is interrupted, it automatically detects the availability of the vehicle power supply or photovoltaic modules and prioritizes switching to the available power replenishment mode.

[0014] Preferably, the site adaptation control module has a built-in load matching algorithm that can automatically adjust the discharge current of the energy storage unit according to the current site load power to avoid equipment failure caused by overload.

[0015] Preferably, the guide rail surface of the quick-change mechanism is provided with a wear-resistant coating, and the two ends of the rail are provided with limiting and buffering structures.

[0016] Preferably, the system further includes an energy storage unit status monitoring module, which collects real-time data on the voltage, temperature, and remaining capacity of individual batteries in the energy storage unit. When the battery capacity is detected to be below 30% or the health status is below 80%, a replacement reminder is pushed to the operation and maintenance terminal. Compared with existing technologies, the present invention has the following advantages: The present invention provides a rapid energy storage replacement and replenishment coordination system applicable to multiple substation sites. Standardized energy storage units achieve cross-site interchangeability through unified specifications and quick-plug interfaces. Combined with an identification module, it can accurately reflect the battery status, reducing operation and maintenance costs and downtime. The rapid replacement mechanism, with the help of guide rails, electromagnetic locks, and power-assisted drive components, enables rapid and safe disassembly and assembly of energy storage units, improving operational convenience and safety. The multi-mode replenishment module integrates multiple replenishment units, broadening the replenishment pathways and adapting to complex operating conditions such as mains power outages. The site adaptation control module can coordinate data from multiple sites to generate scientific scheduling strategies. Combined with uninterrupted power supply switching design, it ensures power supply continuity during replacement. Overall, it significantly improves the large-scale operation and maintenance efficiency and power supply reliability of substation energy storage systems, and reduces operation and maintenance costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a block diagram of a rapid energy storage replacement and replenishment coordination system applicable to multiple substation sites according to the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components.

[0023] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] like Figure 1 As shown, this embodiment of the invention provides a fast energy storage replacement and replenishment coordination system suitable for multiple substation sites, including a standardized energy storage unit, a fast replacement mechanism, a multi-mode replenishment module, and a site adaptation control module; The standardized energy storage unit adopts a uniform lithium iron phosphate battery pack, and is equipped with a standardized quick-plug interface and an identification module. The interface has a built-in anti-misplugging structure and a conductive protective layer. The identification module outputs the battery capacity, health status and cycle number. The quick-change mechanism includes a guide rail, a locking and positioning component, and an assist drive component. The guide rail is adapted to the installation dimensions of the standardized energy storage unit. The locking and positioning component realizes the quick locking and unlocking of the energy storage unit through an electromagnetic lock. The assist drive component provides auxiliary pushing force. The multi-mode power replenishment module integrates a fast charging unit, an on-board power replenishment interface, and a photovoltaic adapter unit for multi-mode power replenishment; The site adaptation control module integrates a processor and a communication module, collects load power and power demand duration data of each substation site, generates energy storage unit replacement priority and energy replenishment strategy, and simultaneously links with the emergency power supply system to achieve uninterrupted power supply switching during the energy storage unit replacement process.

[0025] Standardized energy storage units achieve cross-site interchangeability through unified specifications and quick-plug interfaces. Combined with an identification module, they provide accurate battery status feedback, reducing maintenance costs and downtime. The quick-change mechanism, utilizing guide rails, electromagnetic locks, and power-assisted drive components, enables rapid and safe installation and removal of energy storage units, enhancing operational convenience and safety. The multi-mode energy replenishment module integrates various energy replenishment units, broadening energy replenishment pathways and adapting to complex operating conditions such as mains power outages. The site adaptation control module can coordinate data from multiple sites to generate scientific scheduling strategies. Combined with uninterrupted power supply switching design, it ensures power continuity during replacement. Overall, it significantly improves the large-scale operation and maintenance efficiency and power supply reliability of substation energy storage systems, while reducing maintenance costs.

[0026] In one possible implementation: For example, the standardized energy storage unit has uniform external dimensions and can be charged and discharged ≥3000 times.

[0027] Explaining the concept, standardized external dimensions are not simply about identical sizes, but rather encompass a comprehensive standardized design covering all dimensions, including installation interfaces, mounting points, and center of gravity. This ensures precise adaptation to rapid replacement mechanisms, providing the fundamental physical conditions for the interchangeability of energy storage units across multiple sites. A cycle life of ≥3000 charge-discharge cycles is achieved through the selection of highly consistent lithium iron phosphate battery cells and optimized charge-discharge strategies in the battery management system, representing a quantitative definition of the core performance indicators of the energy storage unit. From a targeted perspective, this limitation directly addresses the shortcomings of existing energy storage units, such as customization, lack of universality, short lifespan, and frequent replacement. Standardized design breaks down the compatibility barriers between different sites and batches of energy storage units, while high cycle life design reduces the performance degradation rate, providing feasibility for large-scale operation and maintenance across multiple sites.

[0028] In one possible implementation: For example, the locking and positioning component of the quick-change mechanism has dual safety protection, and the electromagnetic lock unlocking requires both a power interruption signal and a replacement authorization command to be satisfied simultaneously.

[0029] The core of this explanation is the construction of a dual safety redundancy mechanism. Technically, the power outage signal serves as a hardware-level safety trigger, ensuring that the energy storage unit can only be unlocked when power is off, avoiding the risk of electric shock from live operations. The replacement authorization command serves as a software-level access control condition, requiring maintenance personnel to input an authorization password / command into the site's adaptive control module or remote platform to prevent unauthorized personnel from misoperating. The collaborative verification of these two mechanisms essentially compensates for the shortcomings of existing technologies, such as the single unlocking condition and lack of safety protection in locking mechanisms, through the dual logic of hardware triggering and software authorization. This design is not redundant; rather, it addresses the unique characteristics of the high-voltage working environment of substations by setting necessary safety thresholds for rapid replacement operations, ensuring the standardization and safety of the replacement process.

[0030] In one possible implementation: For example, the multi-mode energy replenishment module has a built-in charge and discharge protection circuit. When it detects that the energy storage unit is overcharged, overheated, or has an abnormal input voltage, it automatically cuts off the charging path and issues an alarm, while recording the fault information to the site adaptation control module.

[0031] This design provides proactive protection and fault tracing for abnormal operating conditions. Technically, the charge / discharge protection circuit integrates core components such as a voltage detection chip, temperature sensor, and overcurrent protection relay. It can collect parameters such as charging voltage, cell temperature, and input current of the energy storage unit in real time. When parameters exceed preset thresholds (such as overcharge voltage or overtemperature thresholds), the relay automatically cuts off the charging path. Simultaneously, it sends an alarm signal to the site's adaptive control module via the communication interface and records information such as the fault occurrence time, fault type, and real-time parameters. This design directly addresses the shortcomings of existing technologies, such as the lack of effective protection for energy replenishment modules, the susceptibility to equipment damage under abnormal operating conditions, and the inability to trace fault information and delays in processing. By combining proactive protection through hardware circuitry with full recording of fault information, a safe closed loop is constructed for the energy replenishment process, ensuring the safe operation of both the energy replenishment module and the energy storage unit.

[0032] In one possible implementation: For example, the site adaptation control module supports 4G / 5G remote communication, uploads the status of energy storage units and energy replenishment progress data of each site to the operation and maintenance management platform, and the platform remotely issues energy replenishment mode switching instructions and replacement scheduling instructions.

[0033] Explained, 4G / 5G remote communication is achieved through the integration of industrial-grade communication modules, supporting the real-time uploading of massive amounts of data (capacity, health status, and recharge progress of energy storage units at each site), while also possessing low-latency remote command reception capabilities. The operation and maintenance management platform, acting as the data hub, enables centralized display, analysis, and dispatch command issuance of data from multiple sites. This design specifically addresses the problems of independent control at a single site, lack of multi-site collaboration, and the need for on-site maintenance personnel, resulting in low efficiency, in the existing technology. By integrating dispersed substation sites into a unified management system through remote communication links, it allows maintenance personnel to complete core tasks such as switching recharge modes and changing dispatch schedules without on-site operation, providing intelligent support for large-scale operation and maintenance of multiple sites.

[0034] In one possible implementation: For example, the quick-plug interface of the standardized energy storage unit adopts an aviation plug structure, and the stripping length is controlled at the interface so that the wire diameter is not exposed.

[0035] Explaining the design, the aircraft connector structure utilizes industrial-grade waterproof and dustproof connectors, featuring excellent vibration resistance, electromagnetic interference resistance, and sealing performance. This makes it suitable for use in outdoor, dusty, and strong electromagnetic environments like substations. Controlling the stripping length and ensuring no exposed wire diameter is achieved through standardized wiring processes, avoiding the risks of oxidation, wear, or short circuits caused by exposed metal parts of the conductors. This design addresses the shortcomings of existing energy storage unit interfaces, such as inconsistent specifications, poor environmental adaptability, and susceptibility to poor contact. It strengthens the standardization and reliability of the interface from both structural selection and process specifications, ensuring stable connection during rapid insertion and removal of energy storage units while extending the interface's lifespan.

[0036] In one possible implementation: For example, the multi-mode power replenishment module has an automatic power replenishment mode switching function. When the mains power is interrupted, it automatically detects the availability of the vehicle power supply or photovoltaic modules and switches to the available power replenishment mode first.

[0037] Explained, the energy replenishment module has a built-in power detection unit that can monitor the voltage, current, and other status parameters of the mains power, vehicle power supply, and photovoltaic modules in real time. When a mains power interruption is detected, or the voltage is 0 or below a threshold, the system automatically triggers mode switching logic, prioritizing the selection of available power sources with stable voltage and sufficient power (such as vehicle power supply or photovoltaic modules), and seamlessly switching the energy replenishment path through a switching switch. This design directly solves the shortcomings of existing technologies, such as a single energy replenishment mode and inability to replenish energy after a mains power interruption. It enables autonomous switching of energy replenishment power sources without manual intervention, ensuring that the energy storage unit can continue to replenish energy in complex power supply environments and improving the system's emergency response capabilities.

[0038] In one possible implementation: For example, the site adaptation control module has a built-in load matching algorithm that can automatically adjust the discharge current of the energy storage unit according to the current site load power to avoid equipment failure caused by overload.

[0039] The load matching algorithm, based on real-time collected site load power data and combined with parameters such as the current capacity and health status of the energy storage unit, dynamically calculates the optimal discharge current threshold and then adjusts the discharge output by controlling the BMS system of the energy storage unit. This design specifically addresses the shortcomings of existing technologies where the energy storage discharge current is mismatched with the load, easily leading to overload faults. Through the algorithm's dynamic adjustment capability, the discharge output of the energy storage unit always adapts to the current site load demand, avoiding damage to the energy storage unit and substation equipment from overload, ensuring discharge efficiency, and guaranteeing the stability and continuity of power supply.

[0040] In one possible implementation: For example, the guide rail surface of the quick-change mechanism is provided with a wear-resistant coating, and the two ends of the rail are provided with limiting and buffering structures.

[0041] Explained, the wear-resistant coating uses ceramic or PTFE coatings, which can significantly reduce the coefficient of friction between the slide rail and the energy storage unit, reducing wear caused by long-term insertion and removal. The limiting buffer structure uses elastic rubber pads or hydraulic dampers to absorb impact when the energy storage unit is pushed to the end of the slide rail or removed, avoiding equipment damage caused by hard contact, while also assisting in the precise positioning of the energy storage unit. This design addresses the shortcomings of existing technologies, such as rapid wear of guide slide rails and easy equipment collision during replacement. Through material optimization and structural improvements, it extends the service life of the quick replacement mechanism, improves the accuracy and stability of the replacement operation, and further strengthens the technical advantages of quick replacement.

[0042] In one possible implementation: For example, the system also includes an energy storage unit status monitoring module, which collects data on the voltage, temperature, and remaining power of individual batteries in the energy storage unit in real time. When the battery capacity is detected to be below 30% or the health status is below 80%, a replacement reminder is pushed to the operation and maintenance terminal.

[0043] Explained, the energy storage unit status monitoring module collects parameters such as individual battery voltage, temperature, and remaining charge (SOC) in real time by setting up individual battery voltage acquisition points and temperature sensors inside the energy storage unit, and transmits the data to the site adaptation control module. When the battery capacity is detected to be below 30% (i.e., the remaining charge cannot meet emergency power supply needs) or the state of health (SOH) is below 80% (i.e., performance degradation to the critical value), the system automatically generates a replacement reminder message and pushes it to the operation and maintenance terminal via 4G / 5G communication. This design specifically addresses the shortcomings of existing technologies in energy storage unit monitoring, such as incomplete monitoring and inability to predict performance degradation. By real-time monitoring of key parameters of individual batteries and critical value warnings, operation and maintenance personnel can plan replacement work in advance, avoiding power outages or safety accidents caused by insufficient energy storage unit performance, and achieving refined operation and maintenance scheduling.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. 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 its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A system for energy storage quick replacement and energy supplement coordination suitable for multi-site of a substation, characterized in that, The system comprises a standardized energy storage unit, a quick replacement mechanism, a multi-mode energy supplement module, and a site adaptive control module. The standardized energy storage unit adopts a unified specification of lithium iron phosphate battery pack, is configured with a standardized quick plug-in interface and an identity recognition module, the interface is provided with a mistaken plug-in prevention structure and a conductive protection layer, and the identity recognition module outputs battery capacity, health status, and cycle number. The quick replacement mechanism comprises a guide slide rail, a locking positioning assembly, and a power-assisted driving part, the guide slide rail is adapted to the mounting size of the standardized energy storage unit, the locking positioning assembly realizes quick locking and unlocking of the energy storage unit through an electromagnetic lock, and the power-assisted driving part provides an auxiliary pushing force. The multi-mode energy supplement module integrates a fast charging unit, a vehicle-mounted energy supplement interface, and a photovoltaic adaptive unit, and is used for multi-mode energy supplement. The site adaptive control module integrates a processor and a communication module, collects load power and power supply demand time length data of each power transformation station, generates energy storage unit replacement priority and energy supplement strategy, and simultaneously links an emergency power supply system to realize power supply switching without power interruption during the energy storage unit replacement process.

2. The energy storage quick replacement and energy supplement coordination system suitable for multi-site substations of claim 1, characterized in that, The standardized energy storage unit has a unified size and a cycle charging and discharging number of greater than or equal to 3000 times.

3. The energy storage quick replacement and energy supplement system suitable for multi-site of a substation according to claim 1, characterized in that, The locking positioning assembly of the quick replacement mechanism has double safety protection, and the electromagnetic lock needs to simultaneously satisfy a power supply interruption signal and a replacement authorization instruction.

4. The energy storage quick replacement and energy supplement system suitable for multi-site of a substation according to claim 1, characterized in that, The multi-mode energy supplement module is provided with a charging and discharging protection circuit, when overcharging, overtemperature, or abnormal input voltage of the energy storage unit is detected, the charging path is automatically cut off, an alarm is issued, and fault information is recorded to the site adaptive control module.

5. The energy storage quick replacement and energy supplement system suitable for multi-site of a substation according to claim 1, characterized in that, The site adaptive control module supports 4G / 5G remote communication, uploads energy storage unit state and energy supplement progress data of each site to an operation and maintenance management platform, and remotely issues energy supplement mode switching instructions and replacement scheduling instructions.

6. The energy storage quick replacement and energy supplement coordination system suitable for multi-site of a substation according to claim 1, characterized in that, The quick plug-in interface of the standardized energy storage unit adopts a plug-in structure, the peeling length at the interface is controlled, and the wire diameter is not exposed.

7. The energy storage quick replacement and energy supplement system suitable for multi-site of a substation according to claim 1, characterized in that, The multi-mode energy supplement module has an energy supplement mode automatic switching function, when commercial power is interrupted, the available state of a vehicle-mounted power supply or a photovoltaic assembly is automatically detected, and the energy supplement mode is automatically switched to an available one.

8. The energy storage quick replacement and energy supplement system suitable for multi-site of a substation according to claim 1, characterized in that, The site adaptive control module is provided with a load matching algorithm, which can automatically adjust the discharging current of the energy storage unit according to the current site load power, to avoid equipment failure caused by overload.

9. The energy storage quick replacement and energy supplement system suitable for multi-site of a substation according to claim 1, characterized in that, The guide slide rail of the quick replacement mechanism is provided with a wear-resistant coating, and the slide rail is provided with a limiting and buffering structure at both ends.

10. The energy storage quick replacement and energy supplement system suitable for multi-site of a substation according to claim 1, characterized in that, The system further comprises an energy storage unit state monitoring module, which collects real-time single battery voltage, temperature, and residual capacity data of the energy storage unit, and pushes a replacement reminder to an operation and maintenance terminal when the battery capacity is lower than 30% or the health status is lower than 80%.

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