WO2023123641A1 - 一种电流源响应的方法、装置及计算机可读存储介质 - Google Patents
一种电流源响应的方法、装置及计算机可读存储介质 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 60
- 230000004044 response Effects 0.000 title claims abstract description 37
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- 238000010586 diagram Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
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- 238000004891 communication Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000013473 artificial intelligence Methods 0.000 description 2
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
Definitions
- the present application relates to the field of electric power technology, in particular to a current source response method, device and computer-readable storage medium.
- an inverter In new energy sources, an inverter is required to convert the generated DC power into AC power. For example, solar energy, wind energy, etc.
- off-grid inverters are required.
- the usual off-grid inverter is a voltage source, so it is mostly used by a single unit. It is necessary to work in parallel to form a system with a larger capacity, and at the same time have the freedom to meet different capacity requirements.
- the grid-connected slaves adjust the power through the power loop-current loop. This adjustment method requires the master to calculate the power, and then transmit the given power to the grid-connected slaves through the communication line.
- the grid-connected slave machine adjusts the output current through the power loop to realize the power output of the grid-connected slave machine and achieve the purpose of equal power sharing.
- the purpose of the present application is to provide a method, device and computer-readable storage medium for current source response.
- the present application provides a method for current source response, including:
- said performing power distribution on said current source and voltage source includes:
- the power drops suddenly it also includes:
- the current source is controlled to output electrical energy to the voltage source, so that the voltage source outputs the electrical energy to the battery.
- the change value is not within the preset range, enter the step of controlling the current source to output electric energy to the voltage source, so that the voltage source outputs the electric energy to the battery.
- it also includes detecting the states of the voltage source and the current source.
- the present application also provides a current source response device, including:
- An acquisition module configured to acquire the voltage value of the AC bus
- a first control module configured to control the output current of the current source when the voltage value is lower than a first threshold
- a judging module configured to judge whether the voltage value exceeds a second threshold, wherein the second threshold is greater than the first threshold, if so, trigger the second control module, if not, trigger the distribution module;
- the second control module is configured to control the current source to stop outputting current
- the distribution module is configured to perform power distribution on the current source and the voltage source when the power synchronization is completed.
- the present application also provides a current source response device, including a memory for storing computer programs;
- the processor is configured to implement the steps of the method for responding to a current source as described above when executing the computer program.
- the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, a current source as described above is realized The steps of the method that respond.
- a current source response method provided in this application is to establish parallel control of the current source and the voltage source, and obtain the voltage value of the AC bus, and when the voltage value is lower than the first threshold, control the output current of the current source to improve the AC bus voltage. Voltage, then judge whether the voltage value exceeds the second threshold, if so, control the current source to stop outputting current, if not, perform power distribution between the current source and the voltage source when the power synchronization is completed.
- this method outputs current when the voltage value of the AC bus is greater than the first threshold, without calculating the power, and by controlling the current source to output current, it does not need to transmit power to the current source through the voltage source to make the current source
- the output current reduces the time for the current source to output current, improves the response speed of the current source, and detects the bus voltage in real time, avoiding the possibility of damage to the voltage source.
- the present application also provides a current source response device and a computer-readable storage medium, which have the same effects as above.
- FIG. 1 is a flowchart of a method for responding to a current source provided in an embodiment of the present application
- Fig. 2 is a control block diagram of a voltage source provided by the embodiment of the present application.
- FIG. 3 is a control block diagram of a current source provided by an embodiment of the present application.
- FIG. 4 is a flow chart of a method for a current source to handle a sudden drop in power provided by an embodiment of the present application
- FIG. 5 is a structural diagram of a current source response device provided in an embodiment of the present application.
- FIG. 6 is a structural diagram of a current source response device provided by another embodiment of the present application.
- the core of the present application is to provide a current source response method, device and computer-readable storage medium.
- FIG. 1 is a flow chart of a method for responding to a current source provided in an embodiment of the present application. As shown in the figure, the method for responding to a current source includes the following steps:
- S12 Control the current source to output current when the voltage value is lower than the first threshold.
- step S13 Determine whether the voltage value exceeds the second threshold, if yes, go to step S14, if not, go to step S15.
- an inverter is needed to convert the generated DC power into AC power.
- AC power For example, solar energy, wind energy, etc.
- off-grid inverters are required.
- the usual off-grid inverter is a voltage source, so it is mostly used by a single unit. It is necessary to work in parallel to form a system with a larger capacity, and at the same time have the freedom to meet different capacity requirements.
- the grid-connected slaves adjust the power through the power loop-current loop. This adjustment method requires the master to calculate the power, and then transmit the given power to the grid-connected slaves through the communication line.
- the grid-connected slave machine adjusts the output current through the power loop to realize the power output of the grid-connected slave machine and achieve the purpose of equal power sharing.
- a method of current source response is proposed.
- FIG 2 is a control block diagram of a voltage source provided by the embodiment of the present application, as shown in Figure 2, wherein the host is the voltage source, and vref is the voltage reference The value is the AC voltage, iref is the current reference value, and the voltage source host controls the output off-grid voltage v parameter and the voltage reference value vref through the host to perform voltage control in a closed-loop manner to obtain the current reference value iref, and then perform current control to obtain the output current of the host.
- Figure 3 is a control block diagram of a current source provided by the embodiment of the present application.
- the slave is the current source
- vref is the voltage reference value
- iref is the current reference value
- the current source is sampled from the slave to obtain the AC bus
- the voltage v parameter and the voltage reference value vref are closed-loop to perform voltage control to obtain iref, and then perform current control to obtain the output current of the slave.
- the control of the voltage source is a voltage-current double closed-loop control
- the control of the current source is a voltage-current double closed-loop control based on phase-locking.
- the link will cause a steady-state error in the voltage output, which will cause a voltage drop.
- the current source will perform current compensation through the voltage drop to support the voltage.
- vref is the AC voltage reference value
- iref is the current reference value
- the AC bus voltage v and vref obtained through the acquisition unit form a closed loop
- the current control input iref is obtained through the voltage closed-loop control
- the current source output current is obtained through the acquisition unit i, after current closed-loop control.
- step S11 there is a steady-state error between the obtained AC bus voltage value and the above-mentioned voltage output, resulting in a consistent voltage in the voltage drop.
- step S12 when the voltage value is lower than the first threshold value, the output current of the current source is controlled, which is consistent with the current compensation performed by the above-mentioned medium current source.
- this embodiment does not limit the specific value of the first threshold value, which can be The first threshold is selected according to specific implementation conditions.
- step S13 it is mentioned whether the voltage value exceeds the second threshold. It can be understood that after the current source performs current compensation, a judgment is made on the current situation to determine whether it has returned to a safe value. When the voltage value exceeds the second threshold, It proves that the current current compensation is too high, and the control current source stops outputting current. If the second threshold is not exceeded, then when the power synchronization of the voltage source is completed, the power distribution is performed on the current source and the voltage source. There are more sources, or the power distribution of the battery corresponding to the voltage source and current source can be selected according to the specific implementation situation. In addition, the specific value of the second threshold is not limited, but to ensure that the second threshold is greater than the first threshold, the second threshold can be selected according to specific implementation conditions.
- This embodiment provides a current source response method.
- the output current of the current source is controlled to improve the AC bus voltage.
- Voltage then judge whether the voltage value exceeds the second threshold, if so, control the current source to stop outputting current, if not, perform power distribution between the current source and the voltage source when the power synchronization is completed.
- this method outputs current when the voltage value of the AC bus is greater than the first threshold, without calculating the power, and by controlling the current source to output current, it does not need to transmit power to the current source through the voltage source to make the current source
- the output current reduces the time for the current source to output current, improves the response speed of the current source, and detects the bus voltage in real time, avoiding the possibility of damage to the voltage source.
- the power is divided into ten equal parts, that is, the voltage source is divided into 100w, and each current The power source is also divided into 100w, but considering that the remaining battery power corresponding to the voltage source and the current source may be different, it may not be realized after equal power sharing. Percentage allocation is carried out. Specifically, there is 1 voltage source, 5 current sources, and a power of 1000w.
- the remaining power of the battery corresponding to the first current source is 20%, and the remaining power of the battery corresponding to the second current source is 25%, the remaining power of the batteries corresponding to the other three current sources is 10%, and the battery power corresponding to the voltage source is 25%, then the power allocated to the voltage source is 250w, and the power allocated to the first current source 200w, the second current source is assigned a power of 250w, and the remaining current sources are assigned a power of 100w, which ensures that after the power distribution is completed, both the voltage source and the current source can work.
- the method of allocating power to the voltage source and the current source is to divide the power equally between the voltage source and the current source or to allocate power according to the remaining power of the battery corresponding to the voltage source and the current source. This method ensures that It not only ensures the fairness of power distribution, but also ensures that when the voltage source or current source allocates power, it can handle the current power, which improves the working efficiency of the equipment.
- a sudden drop in power that is, a sudden drop in power.
- the power of the voltage source does not change, which will cause the power of the voltage source to be too high and the power of the load to be too low. If the power cannot be output to the load, the voltage source will be damaged.
- this embodiment proposes a method for dealing with sudden changes in power drop.
- the flowchart of the method for sudden change as shown in Figure 4, the method for current source processing power drop sudden change comprises the following steps:
- step S17 Determine whether the change value is within a preset range, if yes, go to step S18, if not, go to step S19.
- step S16 and S17 the change value of the voltage of the AC bus is obtained, and it is judged whether the change value is within the preset range.
- This embodiment does not limit the preset range, and the preset range can be selected according to specific implementation conditions.
- the change value is within the preset range, it proves that the current situation can be controlled, then control the output current of the current source, increase the voltage of the voltage source, and then output electric energy to the voltage source, the voltage source receives the electric energy output by the current source, and converts the electric energy Output to the battery, that is, when the load power suddenly drops and the power of the voltage source is high, the power is output to the battery to achieve balance.
- the change value is not within the preset range, it proves that the current situation is serious, so it directly enters step S19 to directly output electric energy to the voltage source, and after the voltage source receives electric energy, it outputs electric energy to the battery to achieve balance.
- This embodiment provides a solution to the sudden change of power drop, by obtaining the change value of the voltage of the AC bus, and judging whether the change value is within the preset range, if so, control the output current of the current source, if not, receive the output of the current source power and output it to the battery.
- This method by outputting electric energy to the voltage source, and the voltage source outputs electric energy to the battery, achieves the effect of power balance, reduces the impact on the voltage source when the power drops suddenly, and improves the stability of the device.
- the states of the voltage source and the current source are detected. It can be seen that by detecting the state of the voltage source and the current source, it can be judged whether there is a problem with the current source or the voltage source, and the abnormal situation can be dealt with in time in advance.
- the method for responding to the current source is described in detail, and the present application also provides corresponding embodiments of the apparatus for responding to the current source. It should be noted that this application describes the embodiments of the device part from two perspectives, one is based on the perspective of functional modules, and the other is based on the perspective of hardware.
- FIG. 5 is a structural diagram of a current source response device provided in an embodiment of the present application. As shown in FIG. 5 , the current source response device includes:
- Establishment module 14 used for establishing the parallel control of the current source and the voltage source.
- the acquiring module 15 is configured to acquire the voltage value of the AC bus.
- the first control module 16 is configured to control the current source to output current when the voltage value is lower than the first threshold.
- the judging module 17 is used to judge whether the voltage value exceeds the second threshold, wherein the second threshold is greater than the first threshold, if yes, trigger the second control module, if not, trigger the distribution module.
- the second control module 18 is configured to control the current source to stop outputting current.
- the allocation module 19 is configured to perform power allocation on the current source and the voltage source when the power synchronization is completed.
- the current source response device includes an establishment module, an acquisition module, a first control module, a judgment module, a second control module and a distribution module, and is used to implement the steps of a current source response method, which is passed Establish parallel control of the current source and voltage source, and obtain the AC bus voltage value.
- a current source response method which is passed Establish parallel control of the current source and voltage source, and obtain the AC bus voltage value.
- control the output current of the current source to increase the AC bus voltage, and then judge whether the voltage value exceeds the second threshold. If the control The current source stops outputting current, if not, power distribution is performed between the current source and the voltage source when the power synchronization is completed.
- this method outputs current when the voltage value of the AC bus is greater than the first threshold, without calculating the power, and by controlling the current source to output current, it does not need to transmit power to the current source through the voltage source to make the current source.
- the output current reduces the time for the current source to output current, and detects the bus voltage in real time, which improves the response speed of the current source and avoids the possibility of damage to the voltage source.
- FIG. 6 is a structural diagram of a device for responding to a current source provided in another embodiment of the present application.
- the device for responding to a current source includes: a memory 20 for storing computer programs;
- the processor 21 is configured to implement the steps of the current source response method mentioned in the above-mentioned embodiments when executing the computer program.
- the current source response device may include, but not limited to, a smart phone, a tablet computer, a notebook computer or a desktop computer, and the like.
- the processor 21 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like.
- Processor 21 can adopt at least one hardware form in DSP (Digital Signal Processing, digital signal processing), FPGA (Field-Programmable Gate Array, field programmable gate array), PLA (Programmable Logic Array, programmable logic array) accomplish.
- Processor 21 may also include a main processor and a coprocessor, the main processor is a processor for processing data in a wake-up state, also called CPU (Central Processing Unit, central processing unit); the coprocessor is Low-power processor for processing data in standby state.
- CPU Central Processing Unit
- the coprocessor Low-power processor for processing data in standby state.
- the processor 21 may be integrated with a GPU (Graphics Processing Unit, image processor), and the GPU is used for rendering and drawing the content that needs to be displayed on the display screen.
- the processor 21 may also include an AI (Artificial Intelligence, artificial intelligence) processor, and the AI processor is used to process computing operations related to machine learning.
- AI Artificial Intelligence, artificial intelligence
- Memory 20 may include one or more computer-readable storage media, which may be non-transitory.
- the memory 20 may also include high-speed random access memory, and non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices.
- the memory 20 is at least used to store the following computer program 201, wherein, after the computer program is loaded and executed by the processor 21, the relevant steps of the current source response method disclosed in any one of the foregoing embodiments can be realized.
- the resources stored in the memory 20 may also include an operating system 202 and data 203, etc., and the storage method may be temporary storage or permanent storage.
- the operating system 202 may include Windows, Unix, Linux and so on.
- the data 203 may include, but not limited to, the data of the current source response method and the like.
- the device responsive to the current source may further include a display screen 22 , an input/output interface 23 , a communication interface 24 , a power supply 25 and a communication bus 26 .
- FIG. 6 does not constitute a limitation to the device responding to the current source, and may include more or less components than shown in the figure.
- the device for responding to a current source includes a memory and a processor, the memory is used to store a computer program, and the processor is used to implement the steps of a method for responding to a current source when executing the computer program, by establishing a current source and a voltage source Parallel control, and obtain the AC bus voltage value.
- control the current source to output current to increase the AC bus voltage, and then judge whether the voltage value exceeds the second threshold. If the control current source stops outputting current, if No, power distribution is done to current and voltage sources when power synchronization is complete.
- this method outputs current when the voltage value of the AC bus is greater than the first threshold, without calculating the power, and by controlling the current source to output current, it does not need to transmit power to the current source through the voltage source to make the current source.
- the output current reduces the time for the current source to output current, and detects the bus voltage in real time, which improves the response speed of the current source and avoids the possibility of damage to the voltage source.
- the present application also provides an embodiment corresponding to a computer-readable storage medium.
- a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor, the steps described in the above method embodiments are implemented.
- the methods in the above embodiments are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
- the technical solution of the present application is essentially or part of the contribution to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , executing all or part of the steps of the methods described in the various embodiments of the present application.
- the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .
- the computer-readable storage medium stores a computer program.
- the computer program is executed by a processor to execute the steps of a current source response method, the parallel control of the current source and the voltage source is established, and the AC Bus voltage value, when the voltage value is lower than the first threshold value, control the current source to output current to increase the AC bus voltage, and then judge whether the voltage value exceeds the second threshold value, if the control current source stops output current, if not, the power synchronization is completed , the power distribution is performed between the current source and the voltage source.
- this method outputs current when the voltage value of the AC bus is greater than the first threshold, without calculating the power, and by controlling the current source to output current, it does not need to transmit power to the current source through the voltage source to make the current source
- the output current reduces the time for the current source to output current, improves the response speed of the current source, and detects the bus voltage in real time, avoiding the possibility of damage to the voltage source.
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Abstract
一种电流源响应的方法、装置及计算机可读存储介质，通过建立对电流源和电压源的并联控制，并获取交流母线电压值，在电压值低于第一阈值时，控制电流源输出电流以提高交流母线电压，随后判断电压值是否超出第二阈值，若是控制电流源停止输出电流，若否，在功率同步完成时，对电流源和电压源进行功率分配。可见，此方法通过在交流母线的电压值大于第一阈值的时候进行输出电流，不需要对功率进行计算，并通过控制电流源输出电流，不需要通过电压源将功率传输至电流源使电流源输出电流，降低了电流源输出电流的时间，并且对母线电压实时检测，提高了电流源的响应速度，避免了电压源损坏的可能。
Description
本申请要求于2021年12月28日提交中国专利局、申请号为202111632528.7、发明名称为“一种电流源响应的方法、装置及计算机可读存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
本申请涉及电力技术领域，特别是涉及一种电流源响应的方法、装置及计算机可读存储介质。
在新能源中，需要逆变器将产生的直流电转换为交流电。例如太阳能、风能等，对于没有国家电网的地方，需要采用离网型的逆变器。通常的离网型逆变器为电压源的，所以多为单台使用。需要多台并联工作以组成更大容量的系统，同时又具有自由满足不同容量需求的自由度。传统的主从并联系统，并网从机通过功率环-电流环的方式进行功率调整，这种调整方式需要主机计算出功率后，再通过通信线的方式，将给定功率传送给并网从机，并网从机通过功率环调整输出电流，实现并网从机的功率输出，达到均分功率的目的。
但目前的技术，在分配功率这个过程中，从机的响应速度太慢，因此，主机承受的压力较大，对主机造成损坏。
鉴于上述技术，寻求一种提高从机响应速度的方法，是本领域人员亟待解决的问题。
发明内容
本申请的目的是提供一种电流源响应的方法、装置及计算机可读存储介质。
为解决上述技术问题，本申请提供一种电流源响应的方法，包括：
建立对电流源和电压源的并联控制；
获取交流母线的电压值；
在所述电压值低于第一阈值时，控制所述电流源输出电流；
判断所述电压值是否超出第二阈值，其中所述第二阈值大于所述第一阈值；
若是，控制所述电流源停止输出电流；
若否，在功率同步完成时，对所述电流源和所述电压源进行功率分配。
优选地，所述对所述电流源和电压源进行功率分配包括：
对所述电流源和所述电压源进行功率均分或根据所述电流源和所述电压源对应的电池剩余电量分配。
优选地，若所述功率下降突变，则还包括：
获取所述交流母线的电压的变化值；
判断所述变化值是否处于预设范围；
若是，控制所述电流源输出电流；
控制电流源输出电能至电压源，以便所述电压源将所述电能输出至电池。
优选地，若所述变化值不处于所述预设范围，则进入所述控制电流源输出电能至电压源，以便电压源将所述电能输出至电池的步骤。
优选地，还包括对所述电压源和电流源的状态进行检测。
为解决上述技术问题，本申请还提供一种电流源响应的装置，包括：
建立模块，用于建立电流源和电压源的并联控制；
获取模块，用于获取交流母线的电压值；
第一控制模块，用于在所述电压值低于第一阈值时，控制所述电流源输出电流；
判断模块，用于判断所述电压值是否超出第二阈值，其中所述第二阈值大于所述第一阈值，若是，触发第二控制模块，若否，触发分配模块；
所述第二控制模块，用于控制所述电流源停止输出电流；
所述分配模块，用于在功率同步完成时，对所述电流源和所述电压源进行功率分配。
为解决上述技术问题，本申请还提供一种电流源响应的装置，包括存 储器，用于存储计算机程序；
处理器，用于执行所述计算机程序时实现如上述所述的一种电流源响应的方法的步骤。
为解决上述技术问题，本申请还提供一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如上述所述的一种电流源响应的方法的步骤。
本申请所提供的一种电流源响应的方法，通过建立电流源和电压源的并联控制，并获取交流母线电压值，在电压值低于第一阈值时，控制电流源输出电流以提高交流母线电压，随后判断电压值是否超出第二阈值，若是控制电流源停止输出电流，若否，在功率同步完成时，对电流源和电压源进行功率分配。可见，此方法通过在交流母线的电压值大于第一阈值的时候进行输出电流，不需要对功率进行计算，并通过控制电流源输出电流，不需要通过电压源将功率传输至电流源使电流源输出电流，降低了电流源输出电流的时间，提高了电流源的响应速度，并且对母线电压实时检测，避免了电压源损坏的可能。
在此基础上，本申请还提供了一种电流源响应的装置和计算机可读存储介质，效果同上。
为了更清楚地说明本申请实施例，下面将对实施例中所需要使用的附图做简单的介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的一种电流源响应的方法的流程图；
图2为本申请实施例提供的一种电压源的控制框图；
图3为本申请实施例提供的一种电流源的控制框图；
图4为本申请实施例提供的一种电流源处理功率下降突变的方法的流程图；
图5为本申请实施例提供的一种电流源响应的装置的结构图；
图6为本申请另一实施例提供的电流源响应的装置的结构图。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下，所获得的所有其他实施例，都属于本申请保护范围。
本申请的核心是提供一种电流源响应的方法、装置及计算机可读存储介质。
为了使本技术领域的人员更好地理解本申请方案，下面结合附图和具体实施方式对本申请作进一步的详细说明。
图1为本申请实施例提供的一种电流源响应的方法的流程图，如图所示，电流源响应的方法包括如下步骤：
S10：建立电流源和电压源的并联控制。
S11：获取交流母线的电压值。
S12：在电压值低于第一阈值时，控制电流源输出电流。
S13：判断电压值是否超出第二阈值，若是，进入S14步骤，若否，进入S15步骤。
S14：控制电流源停止输出电流。
S15：在功率同步完成时，对电流源和电压源进行功率分配。
可以理解的是，在新能源中，需要逆变器将产生的直流电转换为交流电。例如太阳能、风能等，对于没有国家电网的地方，需要采用离网型的逆变器。通常的离网型逆变器为电压源的，所以多为单台使用。需要多台并联工作以组成更大容量的系统，同时又具有自由满足不同容量需求的自由度。传统的主从并联系统，并网从机通过功率环-电流环的方式进行功率调整，这种调整方式需要主机计算出功率后，再通过通信线的方式，将给定功率传送给并网从机，并网从机通过功率环调整输出电流，实现并网从 机的功率输出，达到均分功率的目的。但是在分配功率这个过程中，从机的响应速度太慢，则主机承受的压力较大，对主机造成损坏。因此，提出一种电流源响应的方法。
如S10步骤所说，建立电流源和电压源的并联控制，图2为本申请实施例提供的一种电压源的控制框图，如图2所示，其中主机即为电压源，vref为电压参考值也就是交流电压，iref为电流参考值，电压源主机通过主机把输出离网电压v参数跟电压参考值vref闭环做电压控制，得到电流参考值iref，然后进行电流控制，得到主机输出电流。图3为本申请实施例提供的一种电流源的控制框图，如图3所示，从机即为电流源，vref为电压参考值，iref为电流参考值，电流源从机采样得到交流母线电压v参数跟电压参考值vref闭环做电压控制，得到iref，随后进行电流控制，得到从机输出电流。其中，电压源的控制为电压-电流双闭环控制，电流源的控制为基于锁相下的电压-电流双闭环控制，当电压源受到功率提升的冲击时，针对正弦量，闭环控制存在的滞后环节会导致电压输出会存在稳态误差，从而导致电压下降，当检测到电压下降时，通过电压下降，电流源进行电流补偿，起到支撑电压的目的。图中所示，vref为交流电压参考值，iref为电流参考值，经过采集单元得到的交流母线电压v与vref形成闭环，经过电压闭环控制得到电流控制输入iref，通过采集单元得到电流源输出电流i，经过电流闭环控制。
而S11步骤中所说获取交流母线的电压值，与上述所说的电压输出存在稳态误差，导致电压下降中的电压一致。此外，对于S12步骤所述，在电压值低于第一阈值时，控制电流源输出电流，与上述中电流源进行电流补偿一致，另外，本实施例对第一阈值的具体数值不作限定，可以根据具体的实施情况对第一阈值进行选择。
在S13步骤中，提到判断电压值是否超出第二阈值，可以理解的是，在电流源进行电流补偿后，对当前情况进行一个判定，判断是否回到了安全值，当超出第二阈值时，证明当前电流补偿过高，控制电流源停止输出电流。若没有超出第二阈值，则在电压源功率同步完成时，对电流源和电压源进行功率分配，值得注意的是，本实施例对如何分配功率不作限定， 可以是均分，也可以是电压源多一些，或者通过电压源和电流源对应的电池的电量进行分配，可以根据具体的实施情况进行选择。此外，对第二阈值的具体数值不作限定，但要保证第二阈值比第一阈值大，可以根据具体实施情况对第二阈值进行选择。
本实施例提供的一种电流源响应的方法，通过建立电流源和电压源的并联控制，并获取交流母线电压值，在电压值低于第一阈值时，控制电流源输出电流以提高交流母线电压，随后判断电压值是否超出第二阈值，若是控制电流源停止输出电流，若否，在功率同步完成时，对电流源和电压源进行功率分配。可见，此方法通过在交流母线的电压值大于第一阈值的时候进行输出电流，不需要对功率进行计算，并通过控制电流源输出电流，不需要通过电压源将功率传输至电流源使电流源输出电流，降低了电流源输出电流的时间，提高了电流源的响应速度，并且对母线电压实时检测，避免了电压源损坏的可能。
在上述实施例的基础上对如何对电流源和电压源进行分配进行描述，对电流源和电压源进行分配为，对电流源和电压源进行功率均分或根据电流源和电压源对应的电池剩余电量进行分配。
对电流源和电压源进行功率均分具体的为，例如当前有1个电压源，9个电流源，功率为1000w，则对功率进行十等分，也就是电压源分得100w，每个电流源也是分得100w，但是考虑到电压源和电流源所对应的电池剩余电量可能不同，则，均分功率后可能实现不了，因此，也可以通过根据电压源和电流源所对应的电池剩余电量进行百分比分配，具体的为电压源为1个，电流源为5个，功率为1000w，第一个电流源对应的电池剩余的电量为20％，第二个电流源对应的电池剩余的电量为25％，其余三个电流源的对应的电池的剩余电量均为10％，电压源对应的电池的电量为25％，则电压源被分配的功率为250w，第一个电流源被分配的功率为200w，第二个电流源被分配的功率为250w，其余电流源被分配的功率为100w，这样保证了功率分配完成后，电压源和电流源均能工作完成。
值得注意的是，上述两种分配功率的方式，仅仅为一种优选的实施方 式，不限于上述两种方式，可以根据具体的实施情况进行选择。
本实施例所提供的对电压源和电流源分配功率的方式，通过对电压源和电流源进行功率均分或根据电压源和电流源所对应的电池的剩余电量进行分配，这种方法，保证了功率分配的公平性，也保证了当电压源或电流源分配到功率时，能够处理当前功率，提高了设备的工作效率。
在具体实施例中，可能出现功率下降突变的情况，也就是功率突然下降，当功率突然下降时，电压源的功率没变，就会引起电压源功率过高，负载的功率过低，电压源无法向负载输出功率，则电压源损坏的情况发生，考虑到这种情况，本实施例提出一种针对处理功率下降突变的方法，图4为本申请实施例提供的一种电流源处理功率下降突变的方法的流程图，如图4所示，电流源处理功率下降突变的方法包括如下步骤：
S16：获取交流母线的电压的变化值。
S17：判断变化值是否处于预设范围，若是，进入S18步骤，若否，进入S19步骤。
S18：控制电流源输出电流。
S19：控制电流源输出电能至电压源。
可以理解的是，当出现功率下降突变的情况，也就是功率突然下降，当功率突然下降时，电压源的功率没变，就会引起电压源功率过高，负载的功率过低，电压源无法向负载输出功率，则电压源损坏的情况发生，因此提出一种处理下降突变的方法，如S16和S17步骤所说，获取交流母线的电压的变化值，并判断变化值是否处于预设范围，本实施例对预设范围不作限定，可以根据具体的实施情况对预设范围进行选择。
此外，若变化值处于预设范围，则证明当前情况还可控制，则控制电流源输出电流，提高电压源的电压，随后对电压源输出电能，电压源接收电流源输出的电能，并将电能输出至电池，也就是，当负载功率突然下降时，电压源功率高，则将电能输出到电池，达到平衡。若变化值不处于预设范围，则证明当前情况比较严重，因此直接进入步骤S19，直接对电压源输出电能，电压源接收电能之后，将电能输出至电池，达到平衡。
本实施例所提供的针对功率下降突变的情况进行处理，通过获取交流母线的电压的变化值，并判断变化值是否处于预设范围，若是，控制电流源输出电流，若否，接收电流源输出的电能，并将电能输出至电池。此方法，通过对电压源输出电能，电压源将电能输出至电池的方式，起到功率平衡的效果，减少了功率下降突变时对电压源的冲击，提高了设备的稳定性。
作为一种优选的实施例，对所述电压源和电流源的状态进行检测。可见，通过对电压源和电流源的状态进行检测，可以判断出当前电流源和电压源是否会出现问题，并可以提前对异常情况及时做出处理。
在上述实施例中，对于电流源响应的方法进行了详细描述，本申请还提供电流源响应的装置对应的实施例。需要说明的是，本申请从两个角度对装置部分的实施例进行描述，一种是基于功能模块的角度，另一种是基于硬件的角度。
图5为本申请实施例提供的一种电流源响应的装置的结构图，如图5所示，电流源响应的装置包括：
建立模块14，用于建立电流源和电压源的并联控制。
获取模块15，用于获取交流母线的电压值。
第一控制模块16，用于在电压值低于第一阈值时，控制电流源输出电流。
判断模块17，用于判断电压值是否超出第二阈值，其中第二阈值大于第一阈值，若是，触发第二控制模块，若否，触发分配模块。
第二控制模块18，用于控制电流源停止输出电流。
分配模块19，用于在功率同步完成时，对电流源和电压源进行功率分配。
本实施例提供的电流源响应的装置，其包含建立模块、获取模块、第一控制模块、判断模块、第二控制模块和分配模块，用于实现一种电流源响应的方法的步骤，其通过建立电流源和电压源的并联控制，并获取交流 母线电压值，在电压值低于第一阈值时，控制电流源输出电流以提高交流母线电压，随后判断电压值是否超出第二阈值，若是控制电流源停止输出电流，若否，在功率同步完成时，对电流源和电压源进行功率分配。可见，此方法通过在交流母线的电压值大于第一阈值的时候进行输出电流，不需要对功率进行计算，并通过控制电流源输出电流，不需要通过电压源将功率传输至电流源使电流源输出电流，降低了电流源输出电流的时间，并且对母线电压实时检测，提高了电流源的响应速度，避免了电压源损坏的可能。
图6为本申请另一实施例提供的电流源响应的装置的结构图，如图6所示，电流源响应的装置包括：存储器20，用于存储计算机程序；
处理器21，用于执行计算机程序时实现如上述实施例中所提到的电流源响应的方法的步骤。
本实施例提供的电流源响应的装置可以包括但不限于智能手机、平板电脑、笔记本电脑或台式电脑等。
其中，处理器21可以包括一个或多个处理核心，比如4核心处理器、8核心处理器等。处理器21可以采用DSP(Digital Signal Processing，数字信号处理)、FPGA(Field－Programmable Gate Array，现场可编程门阵列)、PLA(Programmable Logic Array，可编程逻辑阵列)中的至少一种硬件形式来实现。处理器21也可以包括主处理器和协处理器，主处理器是用于对在唤醒状态下的数据进行处理的处理器，也称CPU(Central Processing Unit，中央处理器)；协处理器是用于对在待机状态下的数据进行处理的低功耗处理器。在一些实施例中，处理器21可以在集成有GPU(Graphics Processing Unit，图像处理器)，GPU用于负责显示屏所需要显示的内容的渲染和绘制。一些实施例中，处理器21还可以包括AI(Artificial Intelligence，人工智能)处理器，该AI处理器用于处理有关机器学习的计算操作。
存储器20可以包括一个或多个计算机可读存储介质，该计算机可读存储介质可以是非暂态的。存储器20还可包括高速随机存取存储器，以及非易失性存储器，比如一个或多个磁盘存储设备、闪存存储设备。本实施例 中，存储器20至少用于存储以下计算机程序201，其中，该计算机程序被处理器21加载并执行之后，能够实现前述任意一个实施例公开的电流源响应的方法的相关步骤。另外，存储器20所存储的资源还可以包括操作系统202和数据203等，存储方式可以是短暂存储或者永久存储。其中，操作系统202可以包括Windows、Unix、Linux等。数据203可以包括但不限于电流源响应的方法的数据等。
在一些实施例中，电流源响应的装置还可包括有显示屏22、输入输出接口23、通信接口24、电源25以及通信总线26。
本领域技术人员可以理解，图6中示出的结构并不构成对电流源响应的装置的限定，可以包括比图示更多或更少的组件。
本实施例提供的电流源响应的装置包括存储器和处理器，存储器用于存储计算机程序，处理器用于执行计算机程序时实现一种电流源响应的方法的步骤，其通过建立电流源和电压源的并联控制，并获取交流母线电压值，在电压值低于第一阈值时，控制电流源输出电流以提高交流母线电压，随后判断电压值是否超出第二阈值，若是控制电流源停止输出电流，若否，在功率同步完成时，对电流源和电压源进行功率分配。可见，此方法通过在交流母线的电压值大于第一阈值的时候进行输出电流，不需要对功率进行计算，并通过控制电流源输出电流，不需要通过电压源将功率传输至电流源使电流源输出电流，降低了电流源输出电流的时间，并且对母线电压实时检测，提高了电流源的响应速度，避免了电压源损坏的可能。
最后，本申请还提供一种计算机可读存储介质对应的实施例。计算机可读存储介质上存储有计算机程序，计算机程序被处理器执行时实现如上述方法实施例中记载的步骤。
可以理解的是，如果上述实施例中的方法以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，执行本申请各个实施例所述方 法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
由此可见，本实施例提供的计算机可读存储介质存储有计算机程序，计算机程序被处理器执行一种电流源响应的方法的步骤时，通过建立电流源和电压源的并联控制，并获取交流母线电压值，在电压值低于第一阈值时，控制电流源输出电流以提高交流母线电压，随后判断电压值是否超出第二阈值，若是控制电流源停止输出电流，若否，在功率同步完成时，对电流源和电压源进行功率分配。可见，此方法通过在交流母线的电压值大于第一阈值的时候进行输出电流，不需要对功率进行计算，并通过控制电流源输出电流，不需要通过电压源将功率传输至电流源使电流源输出电流，降低了电流源输出电流的时间，提高了电流源的响应速度，并且对母线电压实时检测，避免了电压源损坏的可能。
以上对本申请所提供的一种电流源响应的方法、装置及计算机可读存储介质进行了详细介绍。说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。对于实施例公开的装置而言，由于其与实施例公开的方法相对应，所以描述的比较简单，相关之处参见方法部分说明即可。应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以对本申请进行若干改进和修饰，这些改进和修饰也落入本申请权利要求的保护范围内。
还需要说明的是，在本说明书中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一 个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
Claims (8)
- 一种电流源响应的方法，其特征在于，包括：建立对电流源和电压源的并联控制；获取交流母线的电压值；在所述电压值低于第一阈值时，控制所述电流源输出电流；判断所述电压值是否超出第二阈值，其中所述第二阈值大于所述第一阈值；若是，控制所述电流源停止输出电流；若否，在功率同步完成时，对所述电流源和所述电压源进行功率分配。
- 根据权利要求1所述的电流源响应的方法，其特征在于，所述对所述电流源和电压源进行功率分配包括：对所述电流源和所述电压源进行功率均分或根据所述电流源和所述电压源对应的电池剩余电量分配。
- 根据权利要求1所述的电流源响应的方法，其特征在于，若所述功率下降突变，则还包括：获取所述交流母线的电压的变化值；判断所述变化值是否处于预设范围；若是，控制所述电流源输出电流；控制电流源输出电能至电压源，以便所述电压源将所述电能输出至电池。
- 根据权利要求3所述的电流源响应的方法，其特征在于，若所述变化值不处于所述预设范围，则进入所述控制电流源输出电能至电压源，以便电压源将所述电能输出至电池的步骤。
- 根据权利要求1至4任意一项所述的电流源响应的方法，还包括对所述电压源和电流源的状态进行检测。
- 一种电流源响应的装置，其特征在于，包括：建立模块，用于建立对电流源和电压源的并联控制；获取模块，用于获取交流母线的电压值；第一控制模块，用于在所述电压值低于第一阈值时，控制所述电流源 输出电流；判断模块，用于判断所述电压值是否超出第二阈值，其中所述第二阈值大于所述第一阈值，若是，触发第二控制模块，若否，触发分配模块；所述第二控制模块，用于控制所述电流源停止输出电流；所述分配模块，用于在功率同步完成时，对所述电流源和所述电压源进行功率分配。
- 一种电流源响应的装置，其特征在于，包括存储器，用于存储计算机程序；处理器，用于执行所述计算机程序时实现如权利要求1至5任意一项所述的一种电流源响应的方法的步骤。
- 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如权利要求1至5任意一项所述的一种电流源响应的方法的步骤。
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