Uninterruptible power supply control method, system and device for emergency power supply vehicle and power supply equipment

Abstract

The invention relates to the technical field of power system emergency power supply, in particular to an uninterruptible power supply control method, system and device for an emergency power supply vehicle and power supply equipment, and the method comprises the steps: connecting a plurality of medium-voltage power supply vehicle switch cabinet public busbars through cables, connecting the leading-out ends of the medium-voltage power supply vehicle switch cabinet public busbars to a mains supply end, and then starting a high-voltage power generation vehicle; collecting electrical parameters output by a mains supply end and a medium-voltage power supply vehicle generator set, and adjusting the output parameters of the generator set after comparison; when the commercial power end breaks down, if the adjusted output parameter is consistent with the first power supply data or the error is within the preset range, grid connection is performed after a first time length is automatically delayed, the commercial power end is withdrawn, and the medium-voltage power supply vehicle takes over the load and monitors the commercial power; and after the commercial power recovers and operates stably, adjusting output parameters of the generator set, confirming that the output parameters are consistent with the commercial power parameters, automatically delaying for a second time length, quitting the generator set, and re-taking over the load at the commercial power end. According to the invention, the requirements of emergency rescue and disaster relief, large-scale temporary power supply and other scenes on quick response and efficient parallel operation can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of emergency power supply in power systems, and in particular to an uninterruptible power supply control method, system, device and power supply equipment for emergency power supply vehicles. Background Art

[0002] In modern society, with the increasing requirements for the stability and reliability of power supply in various industries, emergency power supply vehicles play an increasingly crucial role in emergency handling of various emergencies, power repair operations, and temporary power supply. However, in the actual operation process, a series of significant problems have emerged in traditional emergency power supply vehicles:

[0003] First, difficult parallel synchronization: Due to differences in generator technical parameters among different models of power generation vehicles, it is difficult to achieve stable synchronous operation during the parallel connection process. The traditional parallel connection system cannot handle the situation of mixed use of multiple models, affecting power distribution and coordination.

[0004] Second, communication and interface problems: The communication protocols, interface specifications, and control logics of generators of different brands and models are different. Manual parameter adjustment is required to achieve parallel connection, and it depends on the bus communication interface and protocol standards, which limits the interconnection and interoperability of power generation vehicles, increases the system deployment cost and complexity, and the compatibility between new and old systems is poor.

[0005] Third, low emergency response efficiency: When the traditional system supplies emergency power, complex parameter settings and manual debugging are required by operators, which wastes time and is prone to errors, and cannot meet the requirements of rapid response and efficient parallel connection in scenarios such as disaster relief and large-scale temporary power supply.

[0006] Therefore, in order to solve the problems of the existing system, there is an urgent need for a new control system that can be equipped with multiple types of generator parallel connection schemes. Summary of the Invention

[0007] To solve the above technical problems, the present invention provides an uninterruptible power supply control method, system, device and power supply equipment for emergency power supply vehicles. The method includes the following steps:

[0008] S1: Connect the common busbars of the switch cabinets of multiple medium-voltage power supply vehicles through cables, and connect the outgoing line ends of the switch cabinets of the multiple medium-voltage power supply vehicles to the mains end, and then start the high-voltage power generation vehicle;

[0009] S2: Collect first power supply data from the mains end, collect second power supply data from the output end of the generator set of the medium-voltage power supply vehicle, compare the first power supply data and the second power supply data to obtain a comparison result, and adjust the output parameters of the generator set of the medium-voltage power supply vehicle according to the comparison result;

[0010] S3: When a fault occurs at the mains power supply end, determine whether the adjusted output parameters of the generator set are consistent with the first power supply data or within a preset error range:

[0011] If not, return to execute step S2;

[0012] If so, after automatically delaying for a specified first duration, perform grid connection operation between the medium-voltage power supply vehicle and the mains power supply end. At this time, the mains power supply end withdraws from power supply, and the medium-voltage power supply vehicle starts to take over the user load and continuously monitors the operating state of the mains power supply end;

[0013] S4: Wait until the mains power supply end resumes operation and it is determined that its operating state is stable. Then adjust the output parameters of the generator set of the medium-voltage power supply vehicle. After confirming that the output parameters of the generator set are consistent with the output parameters of the mains power supply end, automatically delay for a specified second duration, and then the generator set withdraws from power supply, and the mains power supply end starts to take over the user load.

[0014] In an embodiment of the present invention, the method further includes step S5: Continuously monitor the operating state of the mains power supply end. After confirming that the power supply of the mains power supply end has returned to normal and is stable, turn off the output of the medium-voltage power supply vehicle to make it in a standby state.

[0015] In an embodiment of the present invention, in S4, after the mains power supply end starts to take over the user load, it further includes: Cut off the connection between the generator set and the mains power supply end, and the generator set performs cold power-off according to a preset program.

[0016] In an embodiment of the present invention, the first power supply data includes voltage amplitude, voltage phase, and frequency.

[0017] Based on the same inventive concept, the present invention further provides an uninterruptible power supply control system for an emergency power supply vehicle to implement the above-mentioned uninterruptible power supply control method for an emergency power supply vehicle. The system includes:

[0018] A power supply preparation module for connecting the common busbars of the switch cabinets of multiple medium-voltage power supply vehicles through cables, connecting the outgoing line ends of the switch cabinets of the multiple medium-voltage power supply vehicles to the mains power supply end, and then starting the high-voltage power generation vehicle;

[0019] A data acquisition and parameter adjustment module for collecting first power supply data from the mains power supply end, collecting second power supply data from the output end of the generator set of the medium-voltage power supply vehicle, comparing the first power supply data and the second power supply data to obtain a comparison result, and adjusting the output parameters of the generator set of the medium-voltage power supply vehicle according to the comparison result;

[0020] The grid-connected power supply module is used to determine that the adjusted output parameters of the generator set are consistent with the first power supply data or within a preset error range when a fault occurs at the mains power end. After automatically delaying for a specified first duration, it performs a grid connection operation between the medium-voltage power supply vehicle and the mains power end. At this time, the mains power end withdraws from power supply, and the medium-voltage power supply vehicle starts to take over the user load and continuously monitors the operating state of the mains power end;

[0021] The mains power restoration and switching module is used to adjust the output parameters of the generator set of the medium-voltage power supply vehicle after the mains power end resumes operation and it is determined that its operating state is stable. After confirming that the output parameters of the generator set are consistent with the output parameters of the mains power end, it automatically delays for a specified second duration, and then the generator set withdraws from power supply, and the mains power end starts to take over the user load.

[0022] In an embodiment of the present invention, the system further includes a standby module. The standby module is used to continuously monitor the operating state of the mains power end. After confirming that the power supply of the mains power end has returned to normal and is stable, it turns off the output of the medium-voltage power supply vehicle and makes it in a standby state.

[0023] The present invention also provides an uninterruptible power supply control device for an emergency power supply vehicle, including: a plurality of voltage regulation and control modules and grid connection and switching equipment; wherein, the plurality of voltage regulation and control modules are respectively connected to a plurality of medium-voltage power supply vehicles in one-to-one correspondence, and are used to collect the output parameters of the generator sets of the plurality of medium-voltage power supply vehicles in real time; the grid connection and switching equipment includes an intelligent monitoring and control module, a plurality of intelligent grid connection controllers and a breaker assembly. The intelligent monitoring and control module is connected to the mains power end. The plurality of intelligent grid connection controllers are respectively connected to the plurality of voltage regulation and control modules in one-to-one correspondence, and each intelligent grid connection controller is connected to the intelligent monitoring and control module through the breaker assembly;

[0024] Wherein, the intelligent monitoring and control module synchronously executes the above-mentioned uninterruptible power supply control system for the emergency power supply vehicle, and realizes the grid connection, disconnection and power supply switching between the medium-voltage power supply vehicle and the mains power end by controlling the breaker assembly.

[0025] In an embodiment of the present invention, the breaker assembly includes a mains power switch, a main power generation switch and a plurality of slave power generation switches. The main power generation switch is connected to the intelligent monitoring and control module and the plurality of slave power generation switches, and each slave power generation switch is connected to an intelligent grid connection controller; the intelligent monitoring and control module is connected to the mains power end through the mains power switch.

[0026] The present invention also provides a power supply device, including the above-mentioned uninterruptible power supply control device for an emergency power supply vehicle.

[0027] The present invention also provides a computer storage medium storing a computer software product, where the computer software product includes a number of instructions for causing a computer device to execute the uninterrupted power supply control method for the emergency power supply vehicle as described above.

[0028] The above technical solution of the present invention has the following advantages compared with the prior art:

[0029] First, based on the mains power parameters, the output parameters of the generator set of the medium-voltage power supply vehicle are automatically adjusted to ensure the synchronization of the generator with the mains power, avoiding the difficulty of parallel operation synchronization caused by differences in generator technical parameters. This adjustment strategy based on real-time data can effectively cope with the situation of mixed use of different models of power supply vehicles, ensuring reasonable power distribution and coordinated operation.

[0030] Second, the entire control system realizes the automatic adjustment of the output parameters of the generator set through data interaction and instruction transmission between controllers, without manual intervention. This automation mechanism avoids the adaptation problems of different control logics caused by manual adjustment, reducing both the cost and complexity of system deployment and improving the compatibility between new and old systems.

[0031] Third, from the parameter adjustment before grid connection to the load switching between the mains power and the emergency power supply vehicle, the whole process is highly automated. During the process of mains power outage and restoration, the system can monitor the mains power status in real time and respond quickly. When the mains power fails, the system can quickly adjust the generator set parameters to achieve synchronous grid connection with the mains power and take over the user load; when the mains power is restored, the system can also quickly adjust the generator parameters to enable the mains power to take over the user load again. This fast response mechanism meets the requirements of rapid response and efficient parallel operation in scenarios such as disaster relief and large-scale temporary power supply. Description of the Drawings

[0032] In order to make the content of the present invention easier to be clearly understood, the present invention will be further described in detail below according to specific embodiments of the present invention in conjunction with the drawings, where

[0033] Figure 1 is a schematic flowchart of an uninterrupted power supply control method for an emergency power supply vehicle provided in an embodiment of the present invention;

[0034] Figure 2 is a schematic structural diagram of an uninterrupted power supply control system for an emergency power supply vehicle provided in an embodiment of the present invention;

[0035] Figure 3 is a schematic structural diagram of an uninterrupted power supply control device for an emergency power supply vehicle provided in an embodiment of the present invention;

[0036] Figure 4It is the working principle diagram of an uninterruptible power supply control device for an emergency power supply vehicle provided in an embodiment of the present invention;

[0037] Explanation of the reference numerals in the specification drawings: 100, power supply preparation module; 200, data acquisition and parameter adjustment module; 300, grid-connected power supply module; 400, mains power restoration switching module;

[0038] 1, voltage regulation and control module; 2, grid connection and switching equipment; 21, intelligent monitoring and control module; 22, intelligent grid connection controller; 23, circuit breaker assembly; 231, mains switch; 232, main power generation switch; 233, slave power generation switch; 3, medium-voltage power supply vehicle; 4, mains power end. Specific implementation manners

[0039] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and be able to implement it, but the embodiments cited do not limit the present invention.

[0040] Embodiment 1

[0041] See Figure 1 As shown, the present invention provides an uninterruptible power supply control method for an emergency power supply vehicle, and the method includes the following steps:

[0042] S1: The emergency power supply vehicle enters the site, and the on-site operator checks the system and confirms that all equipment of the emergency power supply vehicle is in normal standby. Connect the common busbars of the switch cabinets of multiple medium-voltage power supply vehicles through cables, which can integrate the power resources of multiple power supply vehicles, improve the total power supply capacity, and meet the power consumption needs of different scales; then connect the outgoing line ends of the switch cabinets of the multiple medium-voltage power supply vehicles to the mains power end, so that when a fault occurs in the mains power or the power supply is insufficient, the power generation vehicle can supply power to users to achieve the function of emergency power supply; subsequently, start the high-voltage power generation vehicle;

[0043] S2: Collect the first power supply data from the mains power end, including voltage amplitude, voltage phase and frequency; collect relevant second power supply data from the output end of the generator set of the medium-voltage power supply vehicle, compare the first power supply data and the second power supply data to obtain a comparison result, and adjust the output parameters of the generator set of the medium-voltage power supply vehicle based on the mains power parameters according to the comparison result; by monitoring the parameter differences between the two in real time and readjusting when the deviation is large, ensure that the generator set output meets the mains power standard and avoid grid-connected current impact;

[0044] S3: When a fault occurs at the mains power end, determine whether the adjusted output parameters of the generator set and the first power supply data are the same or within a preset error range:

[0045] If not, return to execute step S2;

[0046] If so, after automatically delaying for a specified first duration, the medium-voltage power vehicle and the mains power supply end are interconnected. At this time, the mains power supply end withdraws from power supply, and the medium-voltage power vehicle starts to take over the user load and continuously monitors the operating state of the mains power supply end;

[0047] S4: After the mains power supply end resumes operation and it is determined that its operating state is stable, adjust the output parameters of the generator set of the medium-voltage power vehicle. After confirming that the output parameters of the generator set are consistent with the output parameters of the mains power supply end, automatically delay for a specified second duration, and then the generator set withdraws from power supply, and the mains power supply end starts to take over the user load. The mains power supply resumes power supply to the user through the bypass, and the user load switches back to the mains power supply.

[0048] As can be seen from the above technical solution, the system collects the first and second power supply data from the mains power supply end and the output end of the generator set respectively, and deeply compares them to ensure that the obtained power supply information is comprehensive and accurate. Based on this data support, the system can adjust the output parameters of the generator set targeted according to the comparison result, realizing precise control of the power supply parameters. When the adjusted generator set parameters are inconsistent with the mains power supply parameters or exceed the preset error range, the system automatically returns to the data collection and comparison steps to continuously optimize the output parameters of the generator set. This closed-loop feedback control mechanism ensures that the system can operate stably under different working conditions.

[0049] At the same time, the present invention also provides a relatively perfect mains power supply fault response system. When a fault occurs at the mains power supply end, after automatically detecting and delaying for a preset first duration, the medium-voltage power vehicle and the mains power supply end are quickly interconnected. In this process, due to the precise control of the generator set parameters in the early stage, the medium-voltage power vehicle can smoothly take over the user load, ensuring uninterrupted power supply and meeting the scenarios with strict requirements for power supply stability such as hospitals and data centers.

[0050] After the mains power supply resumes stable operation, the system can automatically adjust the output parameters of the generator set to match the mains power supply parameters again. After delaying for the second duration, a smooth switch between the generator set and the mains power supply end is achieved. This mechanism avoids the possible current impact during the switching process, ensures the safety of user equipment, and maintains the continuity of power supply.

[0051] Furthermore, in S4, after the mains power supply end starts to take over the user load, it further includes: disconnecting the connection between the generator set and the mains power supply end, and the generator set performs cold power-off according to a preset program to reduce equipment loss. At the same time, the mains power supply resumes power supply to the user through the bypass, and the switching of the user load from the emergency power vehicle to the mains power supply is completed.

[0052] Further, the method further includes step S5: continuously monitoring the operating state of the mains power supply end, after confirming that the power supply of the mains power supply end has resumed normal and stable operation, turning off the output of the medium-voltage power supply vehicle, stopping the power generation and power supply operations; real-time monitoring whether the mains load is in a normal working state, and confirming that the user load is completely powered by the mains power supply; afterwards, performing necessary inspections and maintenance on the emergency power supply vehicle to make it ready to enter the standby state and respond to the next possible emergency power supply demand at any time.

[0053] Embodiment 2

[0054] Based on the same inventive concept as Embodiment 1, the present invention further provides an uninterruptible power supply control system for an emergency power supply vehicle, which is used to implement the uninterruptible power supply control method for the emergency power supply vehicle described in Embodiment 1. As Figure 2 shown, the system includes the following modules:

[0055] A power supply preparation module 100, which is used to connect the common busbars of the switch cabinets of multiple medium-voltage power supply vehicles through cables, connect the outgoing line ends of the switch cabinets of the multiple medium-voltage power supply vehicles to the mains power supply end, and then start the high-voltage power generation vehicle;

[0056] A data acquisition and parameter adjustment module 200, which is used to collect first power supply data from the mains power supply end, collect second power supply data from the output end of the generator set of the medium-voltage power supply vehicle, compare the first power supply data and the second power supply data to obtain a comparison result, and adjust the output parameters of the generator set of the medium-voltage power supply vehicle according to the comparison result;

[0057] A grid-connected power supply module 300, which is used to determine that the adjusted output parameters of the generator set are the same as or within a preset error range of the first power supply data when a fault occurs at the mains power supply end, automatically delay for a specified first duration, and then perform a grid-connection operation between the medium-voltage power supply vehicle and the mains power supply end. At this time, the mains power supply end withdraws from power supply, and the medium-voltage power supply vehicle starts to take over the user load, and continuously monitors the operating state of the mains power supply end;

[0058] And a mains power supply restoration and switching module 400, which is used to adjust the output parameters of the generator set of the medium-voltage power supply vehicle after the mains power supply end resumes operation and its operating state is determined to be stable, confirm that the output parameters of the generator set are the same as the output parameters of the mains power supply end, and then automatically delay for a specified second duration, and then the generator set withdraws from power supply, and the mains power supply end starts to take over the user load.

[0059] Further, the system further includes a standby module, which is used to continuously monitor the operating status of the mains power supply end. After confirming that the power supply of the mains power supply end has returned to normal and stable, it shuts down the output of the medium-voltage power vehicle, stops the power generation and power supply operations; it continuously monitors whether the mains load is in a normal operating state, and confirms that the user load is completely powered by the mains power supply; thereafter, it conducts necessary inspections and maintenance on the emergency power vehicle to make it ready to enter the standby state and respond to the next possible emergency power supply demand at any time.

[0060] An uninterruptible power supply control system for an emergency power vehicle proposed in this embodiment is used to implement the aforementioned uninterruptible power supply control method for an emergency power vehicle. Therefore, the specific implementation manners in the system can be seen in the embodiment part of the aforementioned uninterruptible power supply control method for an emergency power vehicle. For example, the power supply preparation module 100, the data acquisition and parameter adjustment module 200, the grid-connected power supply module 300, and the mains power restoration switching module 400 are respectively used to correspondingly implement steps S1, S2, S3, and S4 in the aforementioned uninterruptible power supply control method for an emergency power vehicle in Embodiment 1. Therefore, its specific implementation manners can refer to the descriptions of the corresponding various part embodiments. To avoid redundancy, they will not be elaborated here.

[0061] Embodiment 3

[0062] See Figure 3 As shown, the present invention also provides an uninterruptible power supply control device for an emergency power vehicle, including: a plurality of voltage regulation and control modules 1 and grid connection and switching equipment 2.

[0063] Among them, the plurality of voltage regulation and control modules 1 are respectively connected to a plurality of medium-voltage power vehicles 3 in one-to-one correspondence, and are used to continuously collect the output parameters of the generator sets of the plurality of medium-voltage power vehicles 3; the grid connection and switching equipment 2 includes an intelligent monitoring and control module 21, a plurality of intelligent grid connection controllers 22, and a breaker assembly 23. The intelligent monitoring and control module 21 is connected to the mains power supply end 4. The plurality of intelligent grid connection controllers 22 and the plurality of voltage regulation and control modules 1 are connected in one-to-one correspondence, and each intelligent grid connection controller 22 is connected to the intelligent monitoring and control module 21 through the breaker assembly 23;

[0064] In this embodiment, the intelligent monitoring and control module 21 synchronously executes the uninterruptible power supply control system for an emergency power vehicle described in Embodiment 2, and realizes the grid connection, disconnection, and power supply switching between the medium-voltage power vehicle 3 and the mains power supply end 4 by controlling the breaker assembly 23.

[0065] In an embodiment of the present invention, the circuit breaker assembly 23 includes a mains switch 231, a main power generation switch 232, and a plurality of slave power generation switches 233. The main power generation switch 232 is connected to the intelligent monitoring and control module 21 and the plurality of slave power generation switches 233, and each slave power generation switch 233 is connected to an intelligent grid connection controller 22; the intelligent monitoring and control module 21 is connected to the power distribution cabinet at the mains end 4 through the mains switch 231.

[0066] As Figure 4 shown, the intelligent monitoring and control module 21 (denoted as "IM-NT" in the figure) is responsible for collecting first power supply data in real time from the mains end, including key parameters such as voltage, phase, and frequency. The voltage regulation and control module 1 (denoted as "AVRI-OUT" in the figure) collects relevant second power supply data from the output end of the generator set of the medium-voltage power supply vehicle 3 and uploads it to the intelligent grid connection controller 22 (denoted as "IG-NT" in the figure). After the data is transmitted to the IM-NT controller through the communication line by the IG-NT controller, it is compared by the IM-NT controller, and then an instruction is sent to the IG-NT controller.

[0067] Taking the voltage, frequency, and phase collected at the mains end 4 as reference data, the output parameters of the generator set of the medium-voltage power supply vehicle 3 are adjusted to ensure that the generator about to be connected to the grid can be synchronized with the mains. The system conducts continuous real-time monitoring to compare the voltage, frequency, and phase differences between the generator set and the mains. If the detection result shows an increasing deviation, the system will readjust the output parameters of the grid and conduct real-time monitoring again. The voltage, frequency, and synchronous phase angle of the generator set are automatically adjusted through the AVRI-OUT module and the IG-NT controller to adjust to the standard parameters of the mains to ensure that the incremental output matches the mains and avoid current impact during grid connection.

[0068] When a fault occurs at the mains end 4, after the IM-NT controller confirms that the output parameters of the generator set are consistent with or within the allowable range of the mains parameters, since there may still be impact current due to small differences in voltage, phase, and frequency at the moment of closing, the slave power generation switch 233 (denoted as "GCB1" in the figure) and the main power generation switch 232 (denoted as "MGCB" in the figure) of the generator set automatically delay closing. The automatic delay closing mechanism gives the system more time to monitor and finely adjust the parameters of the generator and the mains, making the two reach a more precise matching state, effectively reducing the current impact at the moment of closing, protecting the power generation equipment, grid equipment, and user equipment, avoiding equipment damage or failure caused by current impact, and ensuring the stable operation of the entire power system.

[0069] After closing the switch, the power supply at the mains side 4 gradually stops, and the medium-voltage power supply vehicle 3 takes over the user load. After the medium-voltage power supply vehicle 3 closes and connects to the power grid, the power output from the mains gradually decreases, while the power output of the medium-voltage power supply vehicle 3 increases synchronously, achieving a smooth transition of the power supply main body and ensuring the uninterrupted power supply. At this time, the IM-NT controller and the IG-NT controller still continuously monitor the status of the mains to enable a quick response when the mains resumes.

[0070] After the mains resumes, the IM-NT controller detects that the voltage, phase, and frequency of the mains are in a stable state, and transmits the data to the IG-NT controller through the communication line. With the help of the AVRI-OUT module, the voltage, synchronous phase angle, and frequency of the generator set are adjusted to ensure synchronization with the resumed mains again. After confirming that the operating parameters of the mains side 4 are consistent with the output parameters of the generator set, the mains switch 231 (denoted as "MCB" in the figure) of the mains side 4 automatically closes with a time delay, enabling the mains side 4 to take over the user load again. The slave power generation switch 233 (denoted as "GCB1" in the figure) of the first generator and the slave power generation switch 233 (denoted as "GCB2" in the figure) of the second generator open, cutting off the connection between the generator set and the mains power grid, and the generator set gradually cools down and shuts down. The mains side 4 restores power supply to the users through the bypass, and the user load switches back to the mains.

[0071] The IM-NT controller continuously monitors the operating status of the mains side 4. After confirming that the power supply of the mains side 4 has resumed normally and stably, it shuts down the output of the medium-voltage power supply vehicle 3, making it ready to enter the standby state to respond to the next possible emergency power supply demand at any time. The IM-NT controller ensures that the mains load is in a normal operating state, and the user load is completely powered by the mains side 4.

[0072] Embodiment 4

[0073] The present invention also provides a power supply device, which includes the emergency power supply vehicle uninterrupted power supply control device described in Embodiment 3.

[0074] Embodiment 5

[0075] The present invention also provides a computer storage medium, which stores a computer software product. The computer software product includes a number of instructions for causing a computer device to execute the emergency power supply vehicle uninterrupted power supply control method described in Embodiment 1.

[0076] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0077] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, as well as the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices produce means for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0078] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory produce a manufactured article including instruction means that implement the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0079] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0080] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A control method for uninterrupted power supply of an emergency power vehicle, characterized in that, It includes the following steps: S1: Connect the common busbars of the switch cabinets of multiple medium-voltage power supply vehicles through cables, connect the outgoing line ends of the switch cabinets of the multiple medium-voltage power supply vehicles to the mains power end, and then start the high-voltage power generation vehicle; S2: Collect the first power supply data from the mains power end, collect the second power supply data from the output end of the generator set of the medium-voltage power supply vehicle, compare the first power supply data and the second power supply data to obtain a comparison result, and adjust the output parameters of the generator set of the medium-voltage power supply vehicle according to the comparison result; S3: When a fault occurs at the mains power end, determine whether the adjusted output parameters of the generator set are consistent with the first power supply data or within a preset error range: If not, return to execute step S2; If so, after automatically delaying for a specified first duration, perform grid connection operation between the medium-voltage power supply vehicle and the mains power end. At this time, the mains power end withdraws from power supply, and the medium-voltage power supply vehicle starts to take over the user load and continuously monitors the operating state of the mains power end; S4: After the mains power end resumes operation and it is determined that its operating state is stable, adjust the output parameters of the generator set of the medium-voltage power supply vehicle. After confirming that the output parameters of the generator set are consistent with the output parameters of the mains power end, after automatically delaying for a specified second duration, the generator set withdraws from power supply, and the mains power end starts to take over the user load.

2. The uninterruptible power supply control method for the emergency power supply vehicle according to claim 1, wherein The method further includes step S5: Continuously monitor the operating state of the mains power end. After confirming that the power supply of the mains power end has returned to normal and stable, turn off the output of the medium-voltage power supply vehicle to make it in a standby state.

3. The uninterrupted power supply control method of the emergency power supply vehicle according to claim 1, wherein In S4, after the mains power end starts to take over the user load, it further includes: Cut off the connection between the generator set and the mains power end, and the generator set performs cold power-off according to a preset program.

4. The uninterrupted power supply control method for the emergency power supply vehicle according to claim 1, characterized in that, The first power supply data includes voltage amplitude, voltage phase and frequency.

5. An uninterruptible power supply control system for an emergency power vehicle, characterized in that, For implementing the uninterrupted power supply control method of the emergency power supply vehicle as described in any one of claims 1 to 4, the system includes: A power supply preparation module, configured to connect the common busbars of the switch cabinets of multiple medium-voltage power supply vehicles through cables, connect the outgoing line ends of the switch cabinets of the multiple medium-voltage power supply vehicles to the mains power end, and then start the high-voltage power generation vehicle; A data collection and parameter adjustment module, configured to collect the first power supply data from the mains power end, collect the second power supply data from the output end of the generator set of the medium-voltage power supply vehicle, compare the first power supply data and the second power supply data to obtain a comparison result, and adjust the output parameters of the generator set of the medium-voltage power supply vehicle according to the comparison result; A grid-connected power supply module, configured to determine that the adjusted output parameters of the generator set are consistent with the first power supply data or within a preset error range when a fault occurs at the mains power end. After automatically delaying for a specified first duration, perform grid connection operation between the medium-voltage power supply vehicle and the mains power end. At this time, the mains power end withdraws from power supply, and the medium-voltage power supply vehicle starts to take over the user load and continuously monitors the operating state of the mains power end; The mains power restoration switching module is used to adjust the output parameters of the generator set of the medium-voltage power vehicle after the mains power supply terminal resumes operation and its operating state is determined to be stable. After confirming that the output parameters of the generator set are consistent with those of the mains power supply terminal, the generator set exits power supply automatically after a specified second delay, and the mains power supply terminal starts to take over the user load.

6. The uninterruptible power supply control system of the emergency power supply vehicle according to claim 5, wherein, The system further includes a standby module, which is used to continuously monitor the operating state of the mains power supply terminal. After confirming that the power supply of the mains power supply terminal has resumed normal and stable operation, the output of the medium-voltage power vehicle is turned off to make it in a standby state.

7. An uninterruptible power supply control device for an emergency power vehicle, characterized in that, Comprising: A plurality of voltage regulation and control modules, which are respectively connected to a plurality of medium-voltage power vehicles one by one, and are used to collect the output parameters of the generator sets of the plurality of medium-voltage power vehicles in real time; And grid connection and switching equipment, which includes an intelligent monitoring and control module, a plurality of intelligent grid connection controllers and a circuit breaker assembly. The intelligent monitoring and control module is connected to the mains power supply terminal. The plurality of intelligent grid connection controllers are respectively connected to the plurality of voltage regulation and control modules one by one, and each intelligent grid connection controller is connected to the intelligent monitoring and control module through the circuit breaker assembly; Wherein, the intelligent monitoring and control module synchronously executes the uninterruptible power supply control system of the emergency power vehicle as described in claim 5 or 6, and realizes the grid connection, disconnection and power supply switching between the medium-voltage power vehicle and the mains power supply terminal by controlling the circuit breaker assembly.

8. The uninterruptible power supply control device for an emergency power vehicle according to claim 7, wherein, The circuit breaker assembly includes a mains power switch, a main power generation switch and a plurality of slave power generation switches. The main power generation switch is connected to the intelligent monitoring and control module and the plurality of slave power generation switches, and each slave power generation switch is connected to an intelligent grid connection controller; the intelligent monitoring and control module is connected to the mains power supply terminal through the mains power switch.

9. A power supply device, characterized in that, Including the uninterruptible power supply control device of the emergency power vehicle as described in claim 7 or 8.

10. A computer storage medium, characterized in that, The computer storage medium stores a computer software product, and the computer software product includes a number of instructions for causing a computer device to execute the uninterruptible power supply control method of the emergency power vehicle as described in any one of claims 1 to 4.

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