Diesel storage cabinet power supply system and control method

Abstract

The invention provides a diesel storage cabinet power supply system and a control method, the system comprises a diesel generating set, an energy storage device and an EMS, the energy storage device is used for connecting electric equipment, the diesel generating set is electrically connected with the energy storage device, the EMS is in communication connection with the energy storage device, and the EMS comprises a forced start switch, a discharge control module, a forced charge module and a forced start module. Emergency power supply of the power supply system is achieved through the forced start switch of the EMS, it is prevented that when the energy storage equipment supplies power, the electric equipment is affected to complete emergency tasks, the energy storage equipment is charged through the forced charging module, and it is prevented that the electric quantity of the energy storage equipment is too low to affect normal use of the electric equipment or cause permanent damage to the energy storage equipment.

Description

Technical Field

[0001] This invention relates to the field of diesel generator set power supply technology, and in particular to a diesel generator storage tank power supply system and control method. Background Technology

[0002] For some engineering equipment, due to its excessive starting current, it is prone to causing grid fluctuations and can easily impact and damage the grid during operation, making direct grid connection unacceptable. Therefore, such equipment typically uses energy storage devices for power supply. The energy storage device is connected to a diesel generator set. When the energy storage device has power, it supplies power to the equipment. When the energy storage device's charge level falls below a preset minimum, the system stops supplying power to the equipment and only allows the diesel generator set to charge the energy storage device. In this state, the power supply system operates in a forced charging mode.

[0003] However, in practical applications, situations frequently arise where diesel generator sets run out of fuel or malfunction. The energy storage device will continue to discharge, even if its charge level falls below the generator's starting threshold. Because the generator malfunction prevents it from charging, the energy storage device will continue discharging until its charge level drops below a preset minimum. At this point, the system enters a forced charging state, and the energy storage device stops supplying power to the equipment. In this situation, the tower crane will shut down due to power failure, leaving the load suspended in mid-air. Even when the generator set is functioning normally, the system remains in forced charging mode and still cannot supply power to the equipment. Prolonged power outages can damage the equipment and even pose safety hazards. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention proposes a diesel storage tank power supply system and control method. The technical solution of this invention is implemented as follows:

[0005] The first aspect of this invention discloses a diesel generator set power supply system, including a diesel generator set, an energy storage device and an EMS, wherein the energy storage device is used to connect electrical equipment, the diesel generator set and the energy storage device are electrically connected, and the EMS is communicatively connected to the energy storage device.

[0006] EMS includes,

[0007] The forced start switch is configured to send a forced start signal to the forced start module when triggered.

[0008] The discharge control module is configured to receive a start signal and control the energy storage device to supply power to the electrical equipment.

[0009] The forced charging module is configured to acquire the SOC value of the energy storage device in real time, analyze the SOC value, and if the SOC value is lower than the forced charging threshold, control the diesel generator set to charge the energy storage device and stop the energy storage device from charging the electrical equipment.

[0010] The forced start module is configured to receive and analyze forced start signals. If the forced start signal is on, it controls the energy storage device to supply power to the electrical equipment; if the forced start signal is off, it disconnects the energy storage device from supplying power to the electrical equipment.

[0011] Furthermore, the forced charging threshold includes a minimum forced charging threshold and a maximum forced charging threshold. The forced charging module is configured to: when the SOC value is lower than the minimum forced charging threshold, control the diesel generator set to charge the energy storage device and stop the energy storage device from charging the electrical equipment; when the SOC value is higher than the maximum forced charging threshold, turn on the energy storage device to supply power to the electrical equipment.

[0012] Furthermore, the energy storage device includes an energy storage battery, a charging PCS, and a discharging PCS, all of which are communicatively connected to the EMS.

[0013] The discharge PCS is connected between the energy storage battery and the electrical device, and is configured to receive signals sent by the EMS and to connect or disconnect the connection between the energy storage battery and the electrical device.

[0014] The charging PCS is located between the diesel generator set and the energy storage battery, and is configured to receive signals sent by the EMS and connect or disconnect the diesel generator set from the energy storage battery.

[0015] The energy storage battery is configured to provide the EMS with the SOC value.

[0016] Furthermore, both the forced start module and the diesel generator set are communicatively connected to the charging PCS.

[0017] The forced start module is configured to, upon receiving a forced start signal indicating that it is enabled, acquire the operating status of the diesel generator set and the charging PCS. If both the diesel generator set and the charging PCS are operating, then control the energy storage device to turn on the power supply to the electrical equipment.

[0018] Furthermore, the forced start module is connected to the energy storage battery. The forced start module is configured to, when analyzing the forced start signal, if the forced start signal is on, obtain and determine the SOC value of the energy storage battery. If the SOC value is higher than the reset threshold, control the energy storage device to turn on the power supply to the electrical equipment.

[0019] The second aspect of this invention discloses a control method for a diesel storage tank power supply system. The method is used to control the diesel storage tank power supply system disclosed in the first aspect of this invention, and includes the following steps:

[0020] The discharge control module receives the start signal and controls the energy storage device to supply power to the electrical equipment.

[0021] The forced charging module obtains the SOC value of the energy storage device in real time; if the SOC value is lower than the forced charging threshold, the forced charging module controls the diesel generator set to charge the energy storage device and stops the energy storage device from charging the electrical equipment.

[0022] Receive and analyze the forced start signal. If the forced start signal is on, control the energy storage device to supply power to the electrical equipment. If the forced start signal is off, disconnect the energy storage device from supplying power to the electrical equipment.

[0023] Furthermore, the forced charging threshold includes a minimum forced charging threshold and a maximum forced charging threshold. When the SOC value is lower than the minimum forced charging threshold, the diesel generator set is controlled to charge the energy storage device, and the energy storage device stops charging the electrical equipment. When the SOC value is higher than the maximum forced charging threshold, the energy storage device starts charging the electrical equipment.

[0024] Furthermore, when analyzing the SOC value, if the SOC value is less than the charging threshold, the forced charging module controls the diesel generator to charge the energy storage device, and if the charging threshold is greater than the forced charging threshold.

[0025] Furthermore, when analyzing the forced start signal, if the forced start signal is active and the diesel generator set is detected charging the energy storage device, the forced start module controls the energy storage device to supply power to the electrical equipment.

[0026] Furthermore, when analyzing the forced start signal, if the forced start signal is enabled, the forced start module determines whether the SOC value has reached the reset threshold. If the SOC value is higher than the reset threshold, it controls the energy storage device to supply power to the electrical equipment.

[0027] The advantages of this invention are as follows:

[0028] An emergency power enable button (forced start switch) is designed on the EMS display screen of the energy storage device of the diesel generator set. Clicking it can switch between ON and OFF. When OFF, it means that the energy storage device is in normal working mode / normal power consumption mode. When ON, it means that the energy storage device has started emergency power consumption mode.

[0029] Under normal power consumption mode, when the SOC value is greater than the strong charging threshold, the EMS controls the discharge PCS to be always on. When the SOC value is less than the strong charging threshold, the EMS controls the discharge PCS to be off. At this time, only the charging PCS is allowed to be on so that the diesel generator set can charge the energy storage device.

[0030] After the diesel generator is repaired, the power supply system is put into emergency power mode after being started by the forced start switch. At this time, regardless of whether the SOC value is less than the forced charging threshold, the discharge PCS can be temporarily turned on to put the system into emergency power state, so that the electrical load can complete the temporary operation task and avoid damage to the electrical equipment itself caused by the electrical load not being powered for a long time, which may bring safety hazards. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0033] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0034] Figure 2 for Figure 1 The status diagram of the EMS display screen in the embodiment shown; Figure 2 In the middle, the forced start switch is in the off state;

[0035] Figure 3 for Figure 1 The preferred embodiment shown is in which the forced start module is communicatively connected to the energy storage battery.

[0036] Figure 4 This is a control flowchart of an embodiment of the present invention. It should be noted that... Figure 4 In this context, N indicates that the judgment is NO. Figure 4 In this context, Y indicates that the judgment is YES.

[0037] In the above figures, the figure numbers indicate the following:

[0038] 1. Diesel generator set;

[0039] 2. EMS;

[0040] 2-1, Forced start switch;

[0041] 2-2, Discharge control module;

[0042] 2-3, High-power charging module;

[0043] 2-4, Force restart module;

[0044] 3. Energy storage equipment;

[0045] 3-1, charging PCS;

[0046] 3-2, Discharge PCS;

[0047] 3-3, Energy storage battery;

[0048] 4. Electrical equipment. Detailed Implementation

[0049] The technical solutions of the present invention will now be clearly and completely described with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used in the detailed description is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0051] In the description of specific embodiments of the present invention, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present invention, "multiple" means two or more, unless otherwise explicitly defined.

[0052] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this invention can be combined with other embodiments.

[0053] In the description of the embodiments of this invention, the term "and / or" is merely a description of the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0054] In existing technology, diesel generator set 1 often encounters situations where it runs out of fuel or malfunctions during operation. The energy storage device continues to discharge, even if its charge level falls below the diesel generator's starting threshold. Because the diesel generator set 1 cannot charge the energy storage device due to the malfunction, it continues to discharge until its charge level drops below a preset minimum. At this point, the system enters a forced charging state, and the energy storage device stops supplying power to the electrical equipment. In this situation, the tower crane shuts down due to power loss, leaving the lifted items suspended in mid-air. Even when the diesel generator set 1 is functioning normally, the system remains in a forced charging state and still cannot supply power to the electrical equipment. Prolonged lack of power to the equipment may damage it and even pose safety hazards.

[0055] To address the aforementioned issues, this invention discloses a diesel storage cabinet power supply system and control method, which enables rapid switching between emergency power use and normal power use by setting a forced start switch 2-1 in conjunction with an EMS.

[0056] The embodiments of the present invention will be described in more detail below through examples. It should be noted that the embodiments of the present invention are not limited to these examples.

[0057] Example: A diesel storage tank power supply system, such as Figure 1 As shown, the device includes a diesel generator set 1 and an energy storage device 3. The energy storage device 3 is used to connect to the electrical equipment 4. The diesel generator set 1 and the energy storage device 3 are electrically connected. An EMS2 is integrated on the energy storage device 3, and the EMS2 is communicatively connected to the energy storage device 3. The EMS2 includes a forced start switch 2-1, a discharge control module 2-2, a forced charging module 2-3, and a forced start module 2-4.

[0058] like Figure 2 As shown, in this embodiment, an emergency power enable button (forced start switch 2-1) is designed on the EMS display screen of the energy storage device 3. The forced start switch 2-1 is configured to send a forced start signal to the forced start module 2-4 when triggered. The start signal is divided into on and off. Clicking the forced start switch 2-1 can switch the start signal on / off. The corresponding emergency power flag S is set in the forced start module 2-4 of the main unit of EMS2.

[0059] When the emergency start switch 2-1 is clicked and set to the Disable state, the EMS2 display sends a shutdown signal to the emergency start module 2-4 in the EMS2 host, and the emergency power flag S in the EMS2 host is set to 0, indicating normal power use; when the emergency power enable button is clicked and set to the Enable state, the EMS display sends an activation signal to the EMS2 host, and the emergency power flag S in the EMS2 host is set to 1, indicating emergency power use.

[0060] In this embodiment, the discharge control module 2-2 of EMS2 is configured to receive a start signal from the electrical device 4 and control the energy storage device 3 to supply power to the electrical device 4.

[0061] The forced charging module 2-3 is configured to acquire the SOC value of the energy storage device 3 in real time, analyze the SOC value, and if the SOC value is lower than the forced charging threshold, control the diesel generator set 1 to charge the energy storage device 3 and stop the energy storage device 3 from charging the electrical equipment 4.

[0062] The forced start module 2-4 is configured to receive the forced start signal from the forced start switch 2-1, analyze the forced start signal, and if the forced start signal is on, control the energy storage device 3 to supply power to the electrical device 4; if the forced start signal is off, disconnect the power supply from the energy storage device 3 to the electrical device 4.

[0063] In this embodiment, after receiving the start signal, the discharge control module 2-2 controls the energy storage device 3 to supply power to the electrical device 4 so as to start the electrical device 4.

[0064] After the electrical equipment 4 is started, the charging module 2-3 obtains the SOC value of the energy storage device 3 in real time, and controls the diesel generator set 1 to charge the energy storage device 3 and control the energy storage device 3 to start and stop power supply to the electrical equipment 4 based on the SOC value.

[0065] When the system receives the start signal, it can control the energy storage device 3 to continue supplying power to the electrical equipment 4, regardless of the system's state. This allows the system to promptly supply power to the de-energized electrical equipment 4 after the power supply equipment has been repaired and the system is in a strong charging state, so that the electrical equipment 4 can be reset. This avoids damage to the electrical equipment 4 due to prolonged power outages and helps improve the safety of equipment use.

[0066] After the electrical device 4 is reset, if the SOC value is still lower than the strong charging threshold, the strong charging module 2-3 will be triggered again to disconnect the power supply from the energy storage device 3 to the electrical device 4, so that the system returns to the strong charging state.

[0067] The start signal is the start signal of the electrical device 4. Under normal circumstances, when the discharge control module 2-2 receives the start signal of the electrical device 4, it controls the energy storage device 3 to supply power to the electrical device 4.

[0068] The forced start signal is a start signal that is manually input or clicked. This system is equipped with an EMS display screen, on which a forced start switch 2-1 is installed. When the operator manually triggers the forced start switch 2-1, the forced start module 2-4 can receive the forced start signal, and then analyze the forced start signal and start the energy storage device 3 to supply power to the electrical equipment 4.

[0069] In specific applications, the forced charging threshold includes a minimum forced charging threshold and a maximum forced charging threshold. The forced charging module 2-3 is configured to: when the SOC value is lower than the minimum forced charging threshold, control the diesel generator set 1 to charge the energy storage device 3 and stop the energy storage device 3 from charging the electrical device 4; when the SOC value is higher than the maximum forced charging threshold, the forced charging module 2-3 turns on the energy storage device 3 to supply power to the electrical device 4.

[0070] Through the above design, when the SOC value is lower than the minimum threshold for forced charging, power supply to the device 4 is stopped, and charging of the energy storage device 3 begins. When the charged amount reaches the maximum threshold for forced charging, the system shuts down the forced charging state, and power supply to the device 4 is turned on. By setting the conditions for opening and closing the forced charging state within a range, the power supply stability of the entire system can be guaranteed, and frequent state switching at critical points can be avoided.

[0071] In this embodiment, a strong charging mode flag M is designed in the host strong charging module 2-3 of EMS2. The exemplary non-limiting strong charging minimum threshold in this embodiment is 20%, and the strong charging maximum threshold is 30%. When the SOC value is ≤20%, the strong charging mode flag M is set to 1; when the SOC value is ≥30% of the maximum strong charging threshold, the strong charging mode flag M is set to 0.

[0072] The minimum and maximum thresholds for forced charging can be set according to the size and specifications of the electrical equipment 4 and the diesel generator set 1, combined with the actual needs of those skilled in the art. This embodiment is only an example and is not a limitation.

[0073] In specific applications, the forced charging module 2-3 is configured such that when analyzing the SOC value, if the SOC value is less than the charging threshold, the forced charging module 2-3 controls the diesel generator to charge the energy storage device 3, and the forced charging threshold is less than the charging threshold.

[0074] In this embodiment, the charging threshold is set above the maximum threshold for forced charging. When the SOC of the energy storage device 3 drops to the charging threshold, the system controls the diesel generator set 1 to charge the energy storage device 3. Since the forced charging mode is not triggered, the energy storage device 3 continues to supply power to the electrical device 4. This design avoids operational interruptions due to momentary power shortages in the energy storage device 3. When the power of the energy storage device 3 drops to the minimum threshold for forced charging, the power supply from the energy storage device 3 to the electrical device 4 is shut off. At this time, the diesel generator set 1 continues to charge the energy storage device 3. By shutting off the power supply to the electrical device 4, the stability of the entire power supply system can be prevented from being affected by dynamic load overload of the diesel generator set 1.

[0075] In specific applications, the energy storage device 3 includes an energy storage battery 3-3, a charging PCS 3-1, and a discharging PCS 3-2, all of which are communicatively connected to the EMS2. The discharging PCS 3-2 is connected between the energy storage battery 3-3 and the electrical device 4, and is configured to receive signals from the EMS2 and connect or disconnect the connection between the energy storage device 3 and the electrical device 4, thereby turning the power supply from the energy storage device 3 to the electrical device 4 on or off. The charging PCS 3-1 is located between the diesel generator set 1 and the energy storage battery 3-3, and is configured to receive signals from the EMS2 and connect or disconnect the charging connection between the diesel generator set 1 and the energy storage battery 3-3, thereby turning the power supply from the diesel generator set 1 to the energy storage battery 3-3 on or off. The energy storage battery 3-3 is configured to allow the EMS2 to obtain its State of Charge (SOC) value.

[0076] In this embodiment, a forced start flag R is designed within the forced start module 2-4 of the EMS2. When the forced start flag R = 1, the forced start module 2-4 in the EMS2 sends a power-off command to the discharge PCS3-2. The discharge PCS3-2 executes the power-off command, disconnecting the power supply from the energy storage device 3 to the electrical device 4. When the forced start flag R = 0, the forced start module 2-4 of the EMS2 sends a power-on command to the discharge PCS3-2. The discharge PCS3-2 executes the power-on command, reconnecting the power supply from the energy storage device 3 to the electrical device 4.

[0077] When the emergency power flag S = 0 and the forced charging mode flag M = 1, the forced start flag R is set to 1, i.e., R = 1; when the emergency power flag S = 0 and the forced charging mode flag M = 0, the forced start flag R is cleared to 0, i.e., R = 0; when the emergency power flag S = 1, the forced start flag R is cleared to 0, i.e., R = 0.

[0078] The specific process is as follows:

[0079] Under normal power usage conditions, the forced start switch 2-1 is closed (i.e., Figure 2 (As shown in the Disable state), the emergency power flag S = 0.

[0080] The operator turns on the start switch of electrical equipment 4. Equipment 4 sends a start signal to the discharge control module 2-2 of EMS2. Discharge control module 2-2 then sends a discharge PCS3-2 start command to the discharge PCS3-2 of energy storage device 3. Discharge PCS3-2 then activates the energy storage battery 3-3 to charge equipment 4. During this process, the high-charge module 2-3 in EMS2 acquires and analyzes the SOC value of the energy storage battery 3-3 in real time. If the SOC value is lower than the high-charge threshold, the high-charge mode flag M=1, and EMS2 sends a charging PCS3-1 start command to the charging PCS3-1 of energy storage device 3. Simultaneously, it sends a discharge PCS3-2 stop command to the discharge PCS3-2, causing the discharge PCS3-2 to stop energy storage device 3 from charging equipment 4. At the same time, the charging OCS controls the diesel generator set 1 to charge energy storage device 3.

[0081] In case of emergency power use, the emergency power flag 2-1 is enabled, and the emergency power flag S = 1, while the emergency start flag R = 0. In this state, EMS2 sends a discharge PCS3-2 enable command to the energy storage device 3's discharge PCS3-2, which controls the energy storage battery 3-3 to charge the device 4. During this process, the emergency start module 2-4 analyzes the status of the emergency start switch 2-1 in real time. If it detects that the emergency start switch 2-1 is closed, EMS2 sends a discharge PCS3-2 disable command to the energy storage device 3's discharge PCS3-2, which disables the energy storage battery 3-3 from charging the device 4.

[0082] In a preferred embodiment, refer to Figure 1 Both the forced start module 2-4 and the diesel generator set 1 are communicatively connected to the charging PCS3-1. The forced start module 2-4 is configured to, upon receiving a forced start signal indicating that it is enabled, acquire the operating status of the diesel generator set 1 and the charging PCS3-1. If both the diesel generator set 1 and the charging PCS3-1 are in an operating state, it controls the energy storage device to turn on the power supply to the electrical equipment.

[0083] The diesel generator set 1 includes a diesel generator unit and an electronic control unit. The diesel generator unit is the core component for energy conversion and the foundation for power generation, converting the thermal energy of diesel combustion into mechanical energy. The electronic control unit is used to collect operating signals of the diesel generator set 1, such as the start-up status and the closing / opening signals of the output circuit breaker. The forced start module 2-4 is communicatively connected to the resistor control unit in the diesel generator set 1 and is used to detect the operating status of the diesel generator set 1.

[0084] Through the above design, after receiving the forced start signal, the forced start module 2-4 detects the working status of both the diesel generator set 1 and the charging PCS3-1. If the diesel generator set 1 is not working and / or the charging PCS3-1 is not working, it means that the diesel generator set 1 cannot currently supply power to the electrical equipment 4, and the energy storage device 3 will not be started to supply power to the electrical equipment 4. When the diesel generator set 1 is detected to be working and the charging PCS3-1 is also working, the energy storage device 3 will be started to supply power to the diesel generator. If the diesel generator is not repaired and cannot continuously supply power to the energy storage device 3, and the energy storage device 3's power is insufficient to support the power supply to the electrical equipment 4, forcibly starting the energy storage device 3 to supply power to the electrical equipment 4 will not only cause the energy storage device 3 to run out of power and be damaged, but also cannot guarantee that it can provide enough power for the reset of the electrical equipment 4, affecting the reset of the electrical equipment 4.

[0085] In a preferred embodiment, refer to Figure 3 The forced start module 2-4 is communicatively connected to the energy storage battery 3-3. The forced start module 2-4 is configured to, when analyzing the forced start signal, if the forced start signal is enabled, determine whether the SOC value has reached the reset threshold of the electrical device 4. If the SOC value is higher than the reset threshold, control the energy storage device 3 to supply power to the electrical device 4.

[0086] The reset threshold is the minimum charge required for the energy storage device to enable the electrical equipment to reset. The current charge level of the energy storage battery 3-3 is monitored to determine if the current charge level of the energy storage device 3 is sufficient to meet the reset requirements of the electrical equipment 4. This prevents over-discharge of the electrical equipment 4, which could cause damage, and also avoids insufficient charge that could affect the reset process and damage the electrical equipment 4.

[0087] It should be noted that the reset threshold can be manually set according to the model of the energy storage device 3 and the model of the electrical equipment 4. Those skilled in the art can set it according to the actual situation, and this invention will not elaborate further or limit it.

[0088] This embodiment also provides a control method for controlling the power supply system of the above-mentioned diesel generator set, including the following steps: the discharge control module 2-2 receives a start signal and controls the energy storage device to supply power to the electrical equipment; the forced charging module 2-3 obtains the SOC value of the energy storage device in real time; if the SOC value is lower than the forced charging threshold, the forced charging module 2-3 controls the diesel generator set 1 to charge the energy storage device and stops the energy storage device from charging the electrical equipment; the forced start signal is received and analyzed; if the forced start signal is on, the energy storage device is controlled to supply power to the electrical equipment; if the forced start signal is off, the power supply of the energy storage device to the electrical equipment is disconnected.

[0089] The forced charging threshold includes a minimum forced charging threshold and a maximum forced charging threshold. When the SOC value is lower than the minimum forced charging threshold, the diesel generator set 1 is controlled to charge the energy storage device and the energy storage device stops charging the electrical equipment. When the SOC value is higher than the maximum forced charging threshold, the energy storage device starts charging the electrical equipment.

[0090] When analyzing the SOC value, if the SOC value is less than the charging threshold, the strong charging module 2-3 controls the diesel generator to charge the energy storage device. If the charging threshold is greater than the strong charging threshold, the energy storage device will be charged.

[0091] When analyzing the forced start signal, if the forced start signal is enabled and the diesel generator set 1 is detected charging the energy storage device, the forced start module 2-4 controls the energy storage device to supply power to the electrical equipment.

[0092] When analyzing the forced start signal, the forced start module 2-4 determines whether the SOC value has reached the reset threshold if the forced start signal is enabled. If the SOC value is higher than the reset threshold, it controls the energy storage device to supply power to the electrical equipment.

[0093] like Figure 4 As shown, the specific control process in this embodiment is as follows:

[0094] In the initial state, the forced start switch 2-1 is closed (Disable state), and the emergency power flag S=0.

[0095] When the staff turns on the start switch of the electrical equipment 4, the electrical equipment 4 sends a start signal to the discharge control module 2-2 of EMS2. The discharge control module 2-2 sends the discharge PCS3-2 start command to the discharge PCS3-2 of the energy storage device 3. The discharge PCS3-2 starts the energy storage device 3 to supply power to the electrical equipment 4.

[0096] During this process, the high-power charging module 2-3 in EMS2 receives and analyzes the SOC value of the energy storage device 3 in real time. If the SOC value is higher than the maximum high-power charging threshold of 30%, the energy storage device 3 continues to supply power to the electrical device 4. When the SOC value is lower than the minimum high-power charging threshold of 20%, the high-power charging mode is triggered. The high-power charging mode flag M in the main unit of EMS2 is 1. At this time, S=0, M=1, the high-power start flag R in EMS2 is 1, and EMS2 issues a discharge PCS3-2 shutdown command. The discharge PCS3-2 of the energy storage device 3 executes the discharge PCS3-2 shutdown command. At the same time, EMS2 issues a charging PCS3-1 start command. The charging PCS3-1 executes the charging PCS3-1 start command and controls the diesel generator set 1 to charge the energy storage device 3.

[0097] In the strong charging mode, when the strong charging module 2-3 determines that the SOC value of the energy storage device 3 is not higher than the maximum strong charging threshold of 30%, the discharge PCS3-2 of the energy storage device 3 is always turned off.

[0098] When the strong charging module 2-3 determines that the SOC value is higher than the maximum threshold for strong charging, the strong charging mode flag M in the host of EMS2 is set to 0. At this time, S=0, M=0, the strong start flag R in EMS2 is cleared, and the strong charging mode is released.

[0099] It should be noted that in the strong charging mode, the energy storage device 3 does not supply power to the electrical device 4. However, there may be situations where the electrical device 4 urgently needs power (e.g., urgently needs to complete a temporary work task). In order to solve this problem, this embodiment has designed a strong start switch 2-1 that can be manually opened and closed on the EMS display screen.

[0100] Therefore, during or after the forced charging mode is activated, the forced start module 2-4 will collect and analyze the forced start signal in real time.

[0101] The logic for determining the forced restart mode is as follows:

[0102] If the forced start signal is on, i.e., the forced start switch 2-1 is in the Enable state, the emergency power flag S in the EMS2 main unit is set to 1, and the system enters emergency power mode. In emergency power mode, regardless of whether the forced charging mode flag M is 1, the forced start flag R will be forcibly cleared to zero, i.e., R = 0. When R = 0, EMS2 issues a discharge PCS3-2 start command, and the discharge PCS3-2 in the energy storage device 3 executes the discharge PCS3-2 start command.

[0103] If the forced start mode determines that the forced start signal is off, that is, the forced start switch 2-1 is in the Disabled state, it proves that it is still in the normal power consumption mode. The diesel generator set 1 continues to charge the energy storage device, and the system can wait for the forced charging mode to be released.

[0104] After the strong charging mode is deactivated or the emergency power consumption mode is entered, the discharge PCS3-2 in the energy storage device 3 executes the discharge PCS3-2 start command to control the energy storage device 3 to continue to supply power to the power consumption device 4.

[0105] During the above process, the forced start module 2-4 will continuously collect the forced start signal from the EMS display screen, and cooperate with the forced charging module 2-3 to collect the SOC value of the energy storage device 3 in real time.

[0106] When the forced start module 2-4 determines that the emergency power flag S=0, it checks whether the forced charging mode flag M in the forced charging module 2-3 is 0. If M=0, the forced start flag R=0, and it continues to check whether the discharge PCS3-2 is in the powered-on state. If it is in the powered-on state, the system operation state is maintained. If it is determined that the discharge PCS3-2 is in the powered-off state, a discharge PCS3-2 start command is issued, so that the discharge PCS3-2 of the energy storage device 3 controls the energy storage battery 3-3 to supply power to the power consumption device 4. If M=1, the forced start flag R is set to 1, so that the system re-enters the forced charging mode. At this time, the forced charging module 2-3 checks whether the discharge PCS3-2 of the energy storage device 3 is in the powered-on state. If the discharge PCS3-2 is in the powered-off state, the forced charging mode is maintained; otherwise, the discharge PCS3-2 is turned off, and the system enters the forced charging mode.

[0107] The above process is the basic control flow of this embodiment. The subsequent control process is basically the same as the above process, so it will not be described again.

[0108] It should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A diesel generator set power supply system, comprising a diesel generator set and an energy storage device, wherein the energy storage device is used to connect electrical equipment, and the diesel generator set and the energy storage device are electrically connected, characterized in that, It also includes an EMS, which is communicatively connected to the energy storage device. The EMS includes... The forced start switch is configured to send a forced start signal to the forced start module when triggered. The discharge control module is configured to receive a start signal and control the energy storage device to supply power to the electrical equipment. The forced charging module is configured to acquire the SOC value of the energy storage device in real time, analyze the SOC value, and if the SOC value is lower than the forced charging threshold, control the diesel generator set to charge the energy storage device and stop the energy storage device from charging the electrical equipment. The forced start module is configured to receive the forced start signal, analyze the forced start signal, and if the forced start signal is on, control the energy storage device to supply power to the electrical device; if the forced start signal is off, disconnect the energy storage device from supplying power to the electrical device.

2. The system according to claim 1, characterized in that, The strong charging threshold includes a minimum strong charging threshold and a maximum strong charging threshold. The strong charging module is configured to: when the SOC value is lower than the minimum strong charging threshold, control the diesel generator set to charge the energy storage device and stop the energy storage device from charging the electrical equipment; when the SOC value is higher than the maximum strong charging threshold, turn on the energy storage device to supply power to the electrical equipment.

3. The system according to claim 1, characterized in that, The energy storage device includes an energy storage battery, a charging PCS, and a discharging PCS, all of which are communicatively connected to the EMS. The discharge PCS is connected between the energy storage battery and the electrical device, and is configured to receive signals sent by the EMS and to connect or disconnect the connection between the energy storage battery and the electrical device. The charging PCS is located between the diesel generator set and the energy storage battery, and is configured to receive signals sent by the EMS and connect or disconnect the diesel generator set from the energy storage battery. The energy storage battery is configured to allow the EMS to acquire the SOC value.

4. The diesel storage tank power supply system according to claim 3, characterized in that, Both the forced start module and the diesel generator set are communicatively connected to the charging PCS. The forced start module is configured to, upon receiving the forced start signal as "on", acquire the operating status of the diesel generator set and the charging PCS; if both the diesel generator set and the charging PCS are operating, control the energy storage device to turn on the power supply to the electrical equipment.

5. A diesel storage tank power supply system according to claim 3, characterized in that, The forced start module is communicatively connected to the energy storage battery. The forced start module is configured to, when analyzing the forced start signal, if the forced start signal is on, acquire and determine the SOC value of the energy storage battery. If the SOC value is higher than a reset threshold, control the energy storage device to turn on the power supply to the electrical device.

6. A method for controlling the power supply system of a diesel storage tank as described in any one of claims 1-5, characterized in that, The steps include the following: The discharge control module receives the start signal and controls the energy storage device to supply power to the electrical equipment. The forced charging module obtains the SOC value of the energy storage device in real time; if the SOC value is lower than the forced charging threshold, the forced charging module controls the diesel generator set to charge the energy storage device and stops the energy storage device from charging the electrical equipment. The system receives and analyzes a forced start signal. If the forced start signal is enabled, it controls the energy storage device to supply power to the electrical device. If the forced start signal is disabled, it disconnects the energy storage device from supplying power to the electrical device.

7. The method according to claim 6, characterized in that, The forced charging threshold includes a minimum forced charging threshold and a maximum forced charging threshold. When the SOC value is lower than the minimum forced charging threshold, the diesel generator set is controlled to charge the energy storage device, and the energy storage device stops charging the electrical equipment. When the SOC value is higher than the maximum forced charging threshold, the energy storage device starts charging the electrical equipment.

8. The control method for a diesel storage tank power supply system according to claim 6, characterized in that, When analyzing the SOC value, if the SOC value is less than the charging threshold, the forced charging module controls the diesel generator to charge the energy storage device, and the charging threshold is greater than the forced charging threshold.

9. The method according to claim 6, characterized in that, When the forced start module analyzes the forced start signal, if the forced start signal is enabled and it detects that the diesel generator set is charging the energy storage device, it controls the energy storage device to supply power to the electrical equipment.

10. The method according to claim 5, characterized in that, When the forced start module analyzes the forced start signal, if the forced start signal is enabled, it determines whether the SOC value has reached the reset threshold. If the SOC value is higher than the reset threshold, it controls the energy storage device to supply power to the electrical equipment.

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