Power emergency dispatching method and device, and storage medium

Abstract

This invention relates to the field of power dispatching and discloses a power emergency dispatching method, equipment, and storage medium. The method includes: an EMS management system determining whether a battery energy storage system is connected to the power grid; when the battery energy storage system is connected to the power grid, detecting a first load rate of the battery energy storage system, a second load rate of the grid charging system, and a third load rate of the diesel generator system in real time, and jointly powering the battery energy storage system, grid charging system, and diesel generator system to supply power to an external load; when not connected to the power grid, detecting the first load rate of the battery energy storage system and the third load rate of the diesel generator system in real time, and setting the diesel generator system and battery energy storage system to jointly power the external load based on the first and third load rates. In this embodiment of the invention, the load distribution efficiency of a complex power supply system consisting of mains power, energy storage, and diesel-energy storage is improved, solving the technical problem of uneven load distribution and low efficiency.

Description

Technical Field

[0001] This invention relates to the field of power dispatching, and in particular to a power emergency dispatching method, equipment, and storage medium. Background Technology

[0002] In power security scenarios, emergency power systems serve as the last line of defense for critical loads, and their reliability and response speed directly impact the safe operation of industrial production, data centers, medical facilities, and important public events. A typical emergency power system usually consists of multiple energy sources, primarily including energy storage battery systems (such as lithium iron phosphate batteries), charging equipment as energy replenishment interfaces, and diesel generator sets for long-term power support. While this diversified power architecture can achieve power security across different time scales through complementary advantages, it also introduces complex energy management challenges.

[0003] Currently, the technical solutions commonly used in the industry still mainly rely on fixed threshold logic or preset timing control for power switching. For example, when the mains power is interrupted, the system usually starts the diesel generator in a preset sequence, or simply manages charging and discharging based on the battery's terminal voltage and state of charge. This extensive control strategy has obvious limitations: on the one hand, it is difficult to dynamically adjust the output ratio of each power unit according to the real-time load fluctuation characteristics, resulting in a delayed system response and affecting power quality when the load fluctuates drastically or changes abruptly; on the other hand, in scenarios where multiple generator sets or energy storage converters operate in parallel, fixed logic cannot optimize the load distribution between units in real time, easily causing some units to operate in an inefficient zone of light load and high fuel consumption for a long time, while other units are overloaded, seriously affecting the overall fuel economy and service life of the system. Therefore, a new technology is needed to solve the technical problem of uneven load distribution and low efficiency caused by the inability of existing technologies to effectively manage complex power supply systems of mains power, energy storage, and diesel-energy storage. Summary of the Invention

[0004] The main objective of this invention is to solve the technical problem that existing technologies cannot effectively manage complex power supply systems consisting of mains power, energy storage, and diesel-storage, resulting in uneven load distribution and low efficiency.

[0005] The first aspect of this invention provides a power emergency dispatch method, which is applied to a power emergency dispatch system. The power emergency dispatch system includes: a battery energy storage system, a grid charging system, a diesel generator system, and an EMS management system. The EMS management system establishes communication connections with the battery energy storage system, the grid charging system, and the diesel generator system, respectively. The power emergency dispatch method includes: The EMS management system determines whether the battery energy storage system is connected to the power grid. When the battery energy storage system is connected to the grid, the first load rate of the battery energy storage system and the second load rate of the grid charging system are detected. Determine whether the first load rate is within a preset first range; When the first load rate is in the first range, the battery energy storage system is set to independently supply power to the external load based on the battery SOC of the battery energy storage system. If the first load rate is not in the first range, then determine whether the second load rate is in the preset second range; When the second load rate is in the second range, the grid charging system and the battery energy storage system are set to jointly supply power to the external load. When the second load rate is not in the second range, the third load rate of the diesel generator system is detected in real time, and based on the third load rate, the battery energy storage system, the grid charging system, and the diesel generator system are combined to supply power to the external load. When not connected to the power grid, the first load rate of the battery energy storage system is detected in real time; Determine whether the first load rate is within a preset first range; When the first load rate is in the first range, the battery energy storage system is set to independently supply power to the external load based on the battery SOC of the battery energy storage system. When the first load rate is not in the first range, the diesel generator system and the battery energy storage system are set to jointly supply power to the external load. The third load rate of the diesel generator system is detected in real time, and the relationship between the third load rate and the preset efficiency range is analyzed to obtain the numerical relationship. Based on the numerical relationship, the number of generator units in parallel operation of the diesel generator system is adjusted to obtain a corrected number of parallel operation units. Based on the corrected number of parallel operation units, the diesel generator system and the battery energy storage system are reset to jointly supply power to the external load.

[0006] Optionally, in a first implementation of the first aspect of the present invention, the step of combining the battery energy storage system, the grid charging system, and the diesel generator system to supply power to an external load based on the third load rate includes: When the second load rate is greater than the maximum value of the second interval, the number of generator units of the diesel generator system is set based on the third load rate, and the battery energy storage system, the grid charging system, and the diesel generator system are set to jointly supply power to the external load according to the number of generator units connected. When the second load rate is less than the minimum value of the second interval, it is determined whether the battery SOC of the battery energy storage system meets the load requirements. If the load demand is met, the power grid charging system will be shut down.

[0007] Optionally, in a second implementation of the first aspect of the present invention, the step of setting the number of generator units in parallel based on the third load rate includes: Determine whether the third load rate is within a preset efficiency range; When the third load rate is within the preset efficiency range, the number of generator units in the diesel generator system to be connected in parallel is determined. If the third load rate is not within the preset efficiency range, the number of generator units in the diesel generator system will be adjusted until the third load rate is within the preset efficiency range.

[0008] Optionally, in a third implementation of the first aspect of the present invention, after the step of setting the battery energy storage system, the grid charging system, and the diesel generator system to jointly supply power to the external load according to the number of generator units operating in parallel, the method further includes: Real-time monitoring of the third load rate of the diesel generator system; Determine whether the third load rate is greater than the maximum value of the preset efficiency range; If the value exceeds the maximum value of the preset efficiency range, the number of generator units in the diesel generator system is adjusted to obtain a corrected number of units in parallel. Based on the corrected number of units in parallel, the battery energy storage system, the grid charging system, and the diesel generator system are then set to work together to supply power to the external load.

[0009] Optionally, in a fourth implementation of the first aspect of the present invention, after the step of determining whether the third load rate is greater than the maximum value of a preset efficiency range, the method further includes: If it is not greater than the maximum value of the preset efficiency range, then determine whether the third load rate is less than the preset shutdown load rate; When the load rate is less than the preset shutdown load rate, the diesel generator system will be shut down.

[0010] Optionally, in a fifth implementation of the first aspect of the present invention, the step of adjusting the number of generator units in the diesel generator system based on the numerical relationship to obtain the corrected number of units in parallel includes: When the third load rate is greater than the maximum value of the efficiency range, the number of generator units in the diesel generator system is adjusted to obtain the corrected number of generator units in parallel. When the third load rate is less than the minimum value of the efficiency range, it is then detected whether the battery SOC of the battery energy storage system meets the load requirements. When the battery SOC meets the load requirements, the number of generator units in parallel in the diesel generator system is adjusted to zero.

[0011] Optionally, in a sixth implementation of the first aspect of the present invention, after the step of resetting the diesel generator system and the battery energy storage system to jointly supply power to the external load based on the corrected parallel operation number, the method further includes: When the diesel generator system meets the power supply requirements of the external load, the remaining power of the diesel generator system for supplying the external load is used to charge the battery energy storage system, and the SOC of the battery energy storage system is read in real time. When the SOC of the rechargeable battery reaches the upper limit of SOC, the charging of the battery energy storage system by the diesel generator system is stopped.

[0012] Optionally, in the seventh implementation of the first aspect of the present invention, the step of setting the battery energy storage system to independently supply power to an external load based on the battery SOC of the battery energy storage system includes: Determine whether the battery SOC of the battery energy storage system meets the load requirements; When the load demand is met, the battery energy storage system is configured to independently supply power to the external load.

[0013] A second aspect of the present invention provides a power emergency dispatching device, comprising: a memory and at least one processor, wherein the memory stores instructions, and the memory and the at least one processor are interconnected via a line; the at least one processor invokes the instructions in the memory to cause the power emergency dispatching device to execute the power emergency dispatching method described above.

[0014] A third aspect of the present invention provides a computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the above-described power emergency dispatching method.

[0015] In this embodiment of the invention, the EMS management system is used to detect whether the battery energy storage system is connected to the power grid, dividing the power emergency dispatch mode into grid-connected mode and off-grid mode. In grid-connected mode, the load rate of the energy storage battery pack, charging equipment, and diesel generator set is monitored in real time, and the power supply mode and unit operating status are dynamically adjusted in combination with the battery SOC value. By setting a load rate range instead of a fixed threshold, more refined adaptive power supply is achieved. In both grid-connected and off-grid modes, it is determined in real time whether the load rate of the diesel generator set is within the optimal operating efficiency range, and the number of generators in parallel is adjusted to maintain efficient operation and improve fuel economy. A unified load rate range judgment logic is used in both grid-connected and off-grid modes to ensure a smooth transition of the system when the power grid status changes. The dispatch mode is divided into grid-connected and off-grid modes, and the load rate of the diesel power system is set and monitored to ensure that the number of generators in parallel is within the optimal operating efficiency range. This improves the load distribution efficiency of the complex power supply system of mains power, energy storage, and diesel-electric storage, and solves the technical problem that the existing technology cannot effectively manage the complex power supply system of mains power, energy storage, and diesel-electric storage, resulting in uneven load distribution and low efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one embodiment of the power emergency dispatching method in this invention; Figure 2 This is a schematic diagram of the architecture of the power emergency dispatch system in an embodiment of the present invention; Figure 3 This is a schematic diagram of a specific embodiment of the 107 steps of the power emergency dispatch method in this invention; Figure 4 This is a schematic diagram of a specific embodiment of step 113 of the power emergency dispatch method in this invention; Figure 5 This is a schematic diagram of one embodiment of the power emergency dispatching equipment in this invention. Detailed Implementation

[0017] This invention provides a power emergency dispatching method, equipment, and storage medium.

[0018] The embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the accompanying drawings and embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0019] In the description of the embodiments disclosed in this invention, the term "comprising" and similar terms should be understood as open-ended inclusion, i.e., "including but not limited to". The term "based on" should be understood as "at least partially based on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The terms "first", "second", etc., may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0020] For ease of understanding, the specific process of the embodiments of the present invention is described below. Please refer to [link / reference]. Figure 1 This invention provides a schematic diagram of an embodiment of a power emergency dispatch method. The power emergency dispatch method is applied to a power emergency dispatch system, which includes: a battery energy storage system, a grid charging system, a diesel generator system, and an EMS management system. The EMS management system establishes communication connections with the battery energy storage system, the grid charging system, and the diesel generator system, respectively. The power emergency dispatch method includes: 101. The EMS management system determines whether the battery energy storage system is connected to the power grid; In this embodiment, please refer to Figure 2 , Figure 2 This is a schematic diagram of the power emergency dispatch system architecture in an embodiment of the present invention. The EMS management system is connected to the grid charging system, the diesel generator system, and the EMS management system via communication lines. The grid charging system, the diesel generator system, and the EMS management system are connected to external loads via electrical lines. The grid charging system is connected to the power grid to provide mains power to the external loads.

[0021] Before power dispatching, the EMS management system first analyzes whether the battery energy storage system is connected to the grid. If the battery energy storage system is connected to the grid, it executes the grid-connected mode. If the battery energy storage system is not connected to the grid, it executes the off-grid mode.

[0022] 102. When the battery energy storage system is connected to the grid, the first load rate of the battery energy storage system and the second load rate of the grid charging system are detected. In this embodiment, the load rate of the battery energy storage system is first detected and recorded as the first load rate N1, and the load rate of the grid charging system is recorded as the second load rate N2.

[0023] 103. Determine whether the first load rate is within a preset first range; In this embodiment, it is first determined whether the first load rate N1 is within the range of a preset first interval.

[0024] 104. When the first load rate is in the first range, the battery energy storage system is set to independently supply power to the external load based on the battery SOC of the battery energy storage system. In this embodiment, when the first load rate N1 is in the first range, if the battery SOC of the battery energy storage system meets the external load requirements, the battery energy storage system is set to independently supply power to the external load.

[0025] Furthermore, step 104 includes the following specific implementation methods: 1041. Determine whether the battery SOC of the battery energy storage system meets the load requirements; 1042. When the load demand is met, the battery energy storage system is set to independently supply power to the external load.

[0026] In steps 1041-1042, it is determined whether the battery SOC of the battery energy storage system meets the load requirements. The load requirements are the real-time requirements of external electrical appliances on the battery's power, energy, voltage, and current under the current operating conditions. When the load requirements are met, the battery energy storage system is set to independently supply power to the external load.

[0027] 105. When the first load rate is not in the first range, determine whether the second load rate is in the preset second range; In this embodiment, if the first load rate N1 is not in the first interval, the system further analyzes whether the second load rate N2 is in the second interval.

[0028] 106. When the second load rate is in the second range, the grid charging system and the battery energy storage system are set to jointly supply power to the external load. In this embodiment, if the second load rate N2 is in the second range, it indicates that the load of the grid charging system and the battery energy storage system is relatively healthy, and the grid charging system and the battery energy storage system jointly supply power to the external load.

[0029] 107. When the second load rate is not in the second range, the third load rate of the diesel generator system is detected in real time, and based on the third load rate, the battery energy storage system, the grid charging system, and the diesel generator system are combined to supply power to the external load. In this embodiment, if the second load rate N2 is not in the second range, the load rate of the diesel generator system needs to be monitored and detected in real time and recorded as the third load rate N3. Under the condition that the third load rate N3 is controlled to be in the high-efficiency operating range of the diesel generator system, the battery energy storage system, the grid charging system and the diesel generator system are combined to supply power to the external load.

[0030] For details, please refer to Figure 3 , Figure 3 This is a schematic diagram of a specific embodiment of step 107 of the power emergency dispatch method in this invention. Step 107 includes the following specific implementation methods: 1071. When the second load rate is greater than the maximum value of the second interval, the number of generator units of the diesel generator system is set based on the third load rate, and the battery energy storage system, the grid charging system, and the diesel generator system are set to jointly supply power to the external load according to the number of generator units connected in parallel. 1072. When the second load rate is less than the minimum value of the second interval, it is determined whether the battery SOC of the battery energy storage system meets the load requirements. 1073. If the load demand is met, the power grid charging system shall be shut down.

[0031] In steps 1071-1073, if the second load rate N2 is greater than the maximum value of the second interval (i.e., the second load rate N2 is higher than the second interval), then the overall system load is considered too high and cannot adequately meet the external load. A diesel generator system needs to be introduced to alleviate the overall system load and meet the external load. Based on the data of the third load rate N3, the number of generator units in parallel operation of the diesel generator system is adjusted until the third load rate N3 falls within the efficiency range. Based on the set number of generator units in parallel operation, the battery storage system, the grid charging system, and the diesel generator system are combined to supply power to the external load.

[0032] If the second load factor N2 is less than the minimum value of the second interval, that is, if the second load factor N2 is lower than the second interval, then the overall system load is considered too low and energy supply can be reduced. Analyze whether the battery SOC of the battery energy storage system meets the load demand. If the battery SOC of the battery energy storage system can independently meet the external load demand, then the grid charging system should be shut down, and the battery power supply system should independently supply power to the external load.

[0033] Specifically, step 1071, "setting the number of generator units in parallel based on the third load rate," includes the following specific implementation methods: 10711. Determine whether the third load rate is within the preset efficiency range; 10712. When the third load rate is within the preset efficiency range, the number of generator units in parallel for the diesel generator system is determined. 10713. When the third load rate is not within the preset efficiency range, the number of generator units in parallel in the diesel generator system shall be adjusted until the third load rate is within the preset efficiency range.

[0034] In steps 10711-10713, it is determined whether the third load factor N3 is within the efficiency range of the diesel generator system. If it is within the efficiency range, the current number of units connected in parallel is considered reasonable and effective, and the number of units connected in parallel in the diesel generator system is determined.

[0035] If the third load rate N3 is not within the preset efficiency range, the number of generator units in the diesel generator system needs to be increased or decreased until the third load rate is within the preset efficiency range. The number of generator units that meet the efficiency range will then be determined as the number of generator units in the joint power supply system.

[0036] Furthermore, following step 1071, the following specific implementation methods are also included: 10714. Real-time detection of the third load rate of the diesel generator system; 10715. Determine whether the third load rate is greater than the maximum value of the preset efficiency range; 10716. If the value is greater than the maximum value of the preset efficiency range, the number of generator units in parallel of the diesel generator system is adjusted to obtain a corrected number of parallel units, and based on the corrected number of parallel units, the battery energy storage system, the grid charging system, and the diesel generator system are reset to jointly supply power to the external load.

[0037] In steps 10714-10716, after the battery storage system, grid charging system, and diesel generator system jointly supply power to the external load, the third load rate N3 of the diesel generator system is monitored in real time. If the third load rate N3 is greater than the maximum value of the efficiency range, it indicates that the current load on the diesel generator system is too high. Therefore, the number of generator units in parallel with the diesel generator system is increased to obtain a corrected paralleling quantity. This corrected paralleling quantity is then used as the total number of generator units in parallel with the diesel generator system. The battery storage system, grid charging system, and diesel generator system are then reconfigured to jointly supply power to the external load, reducing the load on any single system and ensuring that the diesel generator system operates within its high-efficiency range.

[0038] Furthermore, following step 10715, the following specific implementation methods are also included: 10717. If the load rate is not greater than the maximum value of the preset efficiency range, then determine whether the third load rate is less than the preset shutdown load rate. 10718. When the load rate is less than the preset shutdown load rate, the diesel generator system shall be shut down.

[0039] In steps 10717-10718, if the third load rate N3 is not greater than the maximum value of the preset efficiency range, it is necessary to analyze whether the third load rate N3 is too small. If the third load rate N3 is less than the preset shutdown load rate, the diesel generator system needs to be shut down to avoid the diesel generator system from idling and wasting fuel, thus saving the consumption of the entire system.

[0040] 108. When not connected to the power grid, the first load rate of the battery energy storage system is detected in real time; 109. Determine whether the first load rate is within a preset first range; 110. When the first load rate is in the first range, the battery energy storage system is set to independently supply power to the external load based on the battery SOC of the battery energy storage system. In steps 108-110, if the battery energy storage system is not connected to the grid, the mode is considered to be off-grid mode. In off-grid mode, the load rate of the battery energy storage system is first detected and recorded as the first load rate N1. Similarly, it is analyzed whether the first load rate N1 is already within the first interval.

[0041] If the first load rate N1 is in the first range, it is necessary to further analyze whether the battery SOC of the battery energy storage system meets the external load requirements. If the battery SOC can meet the external load requirements, the battery energy storage system is set to independently supply power to the external load.

[0042] 111. When the first load rate is not in the first range, the diesel generator system and the battery energy storage system are set to jointly supply power to the external load. In this embodiment, if the first load rate N1 is not in the first range in the off-grid mode, the diesel generator system and the battery energy storage system are set to jointly supply power to the external load. The diesel generator system is started directly to provide support first, and then the diesel generator system is adjusted to the efficiency range.

[0043] 112. Real-time detection of the third load rate of the diesel generator system, analysis of the relationship between the third load rate and the preset efficiency range, and obtaining the numerical relationship; In this embodiment, the load rate of the real-time detected diesel generator system is denoted as the third load rate N3. The relationship between the third load rate N3 and the efficiency range is analyzed to obtain the numerical relationship.

[0044] 113. Based on the numerical relationship, adjust the number of generator units in parallel operation of the diesel generator system to obtain a corrected number of parallel operation units, and based on the corrected number of parallel operation units, reset the diesel generator system and the battery energy storage system to jointly supply power to the external load.

[0045] In this embodiment, based on numerical relationships, the number of generator units in parallel operation of the diesel generator system is adjusted until the third load rate N3 is within the efficiency range, resulting in a corrected number of parallel operation units. This corrected number of parallel operation units is then used as the total number of parallel operation units for the diesel generator system, and the diesel generator system and battery energy storage system are reconfigured to jointly supply power to the external load.

[0046] For details, please refer to Figure 4 , Figure 4 This is a schematic diagram of a specific embodiment of step 113 of the power emergency dispatch method in this invention. The specific implementation of step 113, "adjusting the number of generator units in the diesel generator system based on the numerical relationship to obtain the corrected number of units in parallel," includes: 1131. When the third load rate is greater than the maximum value of the efficiency range, the number of generator units in the diesel generator system is adjusted to obtain the corrected number of generator units in parallel. 1132. When the third load rate is less than the minimum value of the efficiency range, it is then detected whether the battery SOC of the battery energy storage system meets the load requirements. 1133. When the battery SOC meets the load requirements, the number of generator units in parallel in the diesel generator system is adjusted to zero.

[0047] In steps 1131-1133, if the third load factor N3 is greater than the maximum value of the efficiency range, it indicates that the diesel generator system is too large. Increasing the number of diesel generator units in parallel will yield the corrected number of units in parallel.

[0048] If the third load factor N3 is within the efficiency range, then the current state can be maintained without any action.

[0049] If the third load factor N3 is less than the minimum value of the efficiency range, then check whether the battery SOC of the battery energy storage system meets the load requirements. If the battery SOC meets the load requirements, adjust the number of generators in parallel with the diesel generator system to zero, or shut down the diesel generator system so that the battery energy storage system can independently supply power to the external load.

[0050] Furthermore, following step 113, the following specific implementation methods are also included: 1131. When the diesel generator system meets the power supply requirements of the external load, the remaining power of the diesel generator system for supplying the external load is controlled to charge the battery energy storage system, and the SOC of the battery energy storage system is read in real time. 1132. When the SOC of the charging battery reaches the upper limit of SOC, the charging of the battery energy storage system by the diesel generator system shall be stopped.

[0051] In steps 1131-1132, after the diesel generator system has supplied power to the external load, the remaining power from the diesel generator system is used to charge the battery storage system, and the SOC of the battery in the battery storage system is read in real time. It is then determined whether the battery SOC has reached the upper limit of the battery capacity. If it has not reached the upper limit, the remaining power from the diesel generator system continues to charge the battery storage system. If the upper limit of the battery capacity SOC has been reached, the diesel generator system stops charging the battery storage system.

[0052] In this embodiment of the invention, the EMS management system is used to detect whether the battery energy storage system is connected to the power grid, dividing the power emergency dispatch mode into grid-connected mode and off-grid mode. In grid-connected mode, the load rate of the energy storage battery pack, charging equipment, and diesel generator set is monitored in real time, and the power supply mode and unit operating status are dynamically adjusted in combination with the battery SOC value. By setting a load rate range instead of a fixed threshold, more refined adaptive power supply is achieved. In both grid-connected and off-grid modes, it is determined in real time whether the load rate of the diesel generator set is within the optimal operating efficiency range, and the number of generators in parallel is adjusted to maintain efficient operation and improve fuel economy. A unified load rate range judgment logic is used in both grid-connected and off-grid modes to ensure a smooth transition of the system when the power grid status changes. The dispatch mode is divided into grid-connected and off-grid modes, and the load rate of the diesel power system is set and monitored to ensure that the number of generators in parallel is within the optimal operating efficiency range. This improves the load distribution efficiency of the complex power supply system of mains power, energy storage, and diesel-electric storage, and solves the technical problem that the existing technology cannot effectively manage the complex power supply system of mains power, energy storage, and diesel-electric storage, resulting in uneven load distribution and low efficiency.

[0053] Figure 5 This is a schematic diagram of the structure of a power emergency dispatching device 500 provided in an embodiment of the present invention. The power emergency dispatching device 500 can vary significantly due to different configurations or performance characteristics. It may include one or more central processing units (CPUs) 510 and memory 520, and one or more storage media 530 storing application programs 533 or data 532. The memory 520 and storage media 530 can be temporary or persistent storage. The program stored in the storage media 530 may include one or more modules (not shown in the diagram), each module may include a series of instruction operations on the power emergency dispatching device 500. Furthermore, the processor 510 may be configured to communicate with the storage media 530 and execute the series of instruction operations in the storage media 530 on the power emergency dispatching device 500.

[0054] The power emergency dispatching equipment 500 may also include one or more power supplies 540, one or more wired or wireless network interfaces 550, one or more input / output interfaces 560, and / or one or more operating systems 531, such as Windows Server, Mac OS X, Unix, Linux, Free BSD, etc. Those skilled in the art will understand that... Figure 5 The illustrated power emergency dispatch equipment structure does not constitute a limitation on power emergency dispatch equipment, and may include more or fewer components than illustrated, or combine certain components, or have different component arrangements.

[0055] The present invention also provides a computer-readable storage medium, which can be a non-volatile computer-readable storage medium or a volatile computer-readable storage medium, wherein the computer-readable storage medium stores instructions that, when the instructions are executed on a computer, cause the computer to perform the steps of the power emergency dispatch method.

[0056] In the context of this disclosure, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0057] Furthermore, although the operations are described in a specific order, this should be understood as requiring that such operations be performed in the specific order shown or in sequential order, or requiring that all illustrated operations be performed to achieve the desired result. In certain environments, multitasking and parallel processing may be advantageous. Similarly, although several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of this disclosure. Certain features described in the context of individual embodiments may also be implemented in combination in a single implementation. Conversely, various features described in the context of a single implementation may also be implemented individually or in any suitable sub-combination in multiple implementations.

[0058] Although the subject matter has been described using language specific to structural features and / or methodological logic, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are merely illustrative examples of implementing the claims.

Claims

1. A power emergency dispatching method, characterized in that, The power emergency dispatch method is applied to a power emergency dispatch system, which includes: a battery energy storage system, a grid charging system, a diesel generator system, and an EMS management system. The EMS management system establishes communication connections with the battery energy storage system, the grid charging system, and the diesel generator system, respectively. The power emergency dispatch method includes: The EMS management system determines whether the battery energy storage system is connected to the power grid. When the battery energy storage system is connected to the grid, the first load rate of the battery energy storage system and the second load rate of the grid charging system are detected. Determine whether the first load rate is within a preset first range; When the first load rate is in the first range, the battery energy storage system is set to independently supply power to the external load based on the battery SOC of the battery energy storage system. If the first load rate is not in the first range, then determine whether the second load rate is in the preset second range; When the second load rate is in the second range, the grid charging system and the battery energy storage system are set to jointly supply power to the external load. When the second load rate is not in the second range, the third load rate of the diesel generator system is detected in real time, and based on the third load rate, the battery energy storage system, the grid charging system, and the diesel generator system are combined to supply power to the external load. When not connected to the power grid, the first load rate of the battery energy storage system is detected in real time; Determine whether the first load rate is within a preset first range; When the first load rate is in the first range, the battery energy storage system is set to independently supply power to the external load based on the battery SOC of the battery energy storage system. When the first load rate is not in the first range, the diesel generator system and the battery energy storage system are set to jointly supply power to the external load. The third load rate of the diesel generator system is detected in real time, and the relationship between the third load rate and the preset efficiency range is analyzed to obtain the numerical relationship. Based on the numerical relationship, the number of generator units in parallel operation of the diesel generator system is adjusted to obtain a corrected number of parallel operation units. Based on the corrected number of parallel operation units, the diesel generator system and the battery energy storage system are reset to jointly supply power to the external load.

2. The power emergency dispatching method according to claim 1, characterized in that, The step of combining the battery energy storage system, the grid charging system, and the diesel generator system to supply power to the external load based on the third load rate includes: When the second load rate is greater than the maximum value of the second interval, the number of generator units of the diesel generator system is set based on the third load rate, and the battery energy storage system, the grid charging system, and the diesel generator system are set to jointly supply power to the external load according to the number of generator units connected in parallel. When the second load rate is less than the minimum value of the second interval, it is determined whether the battery SOC of the battery energy storage system meets the load requirements. If the load demand is met, the power grid charging system will be shut down.

3. The power emergency dispatching method according to claim 2, characterized in that, The step of setting the number of generator units in parallel based on the third load rate includes: Determine whether the third load rate is within a preset efficiency range; When the third load rate is within the preset efficiency range, the number of generator units in the diesel generator system to be connected in parallel is determined. If the third load rate is not within the preset efficiency range, the number of generator units in the diesel generator system will be adjusted until the third load rate is within the preset efficiency range.

4. The power emergency dispatching method according to claim 2, characterized in that, After the step of setting the battery energy storage system, the grid charging system, and the diesel generator system to jointly supply power to the external load according to the number of generator units in parallel, the method further includes: Real-time monitoring of the third load rate of the diesel generator system; Determine whether the third load rate is greater than the maximum value of the preset efficiency range; If the value exceeds the maximum value of the preset efficiency range, the number of generator units in the diesel generator system is adjusted to obtain a corrected number of units in parallel. Based on the corrected number of units in parallel, the battery energy storage system, the grid charging system, and the diesel generator system are then set to work together to supply power to the external load.

5. The power emergency dispatching method according to claim 4, characterized in that, After the step of determining whether the third load rate is greater than the maximum value of the preset efficiency range, the method further includes: If it is not greater than the maximum value of the preset efficiency range, then determine whether the third load rate is less than the preset shutdown load rate; When the load rate is less than the preset shutdown load rate, the diesel generator system will be shut down.

6. The power emergency dispatching method according to claim 1, characterized in that, The step of adjusting the number of generator units in the diesel generator system based on the numerical relationship to obtain the corrected number of units in parallel includes: When the third load rate is greater than the maximum value of the efficiency range, the number of generator units in the diesel generator system is adjusted to obtain the corrected number of generator units in parallel. When the third load rate is less than the minimum value of the efficiency range, it is then detected whether the battery SOC of the battery energy storage system meets the load requirements. When the battery SOC meets the load requirements, the number of generator units in parallel in the diesel generator system is adjusted to zero.

7. The power emergency dispatching method according to claim 1, characterized in that, After the step of resetting the diesel generator system and the battery energy storage system to jointly supply power to the external load based on the corrected parallel operation number, the method further includes: When the diesel generator system meets the power supply requirements of the external load, the remaining power of the diesel generator system for supplying the external load is used to charge the battery energy storage system, and the SOC of the battery energy storage system is read in real time. When the SOC of the rechargeable battery reaches the upper limit of SOC, the charging of the battery energy storage system by the diesel generator system is stopped.

8. The power emergency dispatching method according to claim 1, characterized in that, The step of setting the battery energy storage system to independently supply power to an external load based on the battery's state of charge (SOC) includes: Determine whether the battery SOC of the battery energy storage system meets the load requirements; When the load demand is met, the battery energy storage system is configured to independently supply power to the external load.

9. A power emergency dispatching device, characterized in that, The power emergency dispatching equipment includes: a memory and at least one processor, wherein the memory stores instructions, and the memory and the at least one processor are interconnected via a line; The at least one processor invokes the instructions in the memory to cause the power emergency dispatching device to execute the power emergency dispatching method as described in any one of claims 1-8.

10. A computer-readable storage medium storing a computer program thereon, characterized in that, When the computer program is executed by the processor, it implements the power emergency dispatching method as described in any one of claims 1-8.

Images