CN110445141B - Electric energy management control method and control device - Google Patents
Electric energy management control method and control device Download PDFInfo
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- CN110445141B CN110445141B CN201910771140.1A CN201910771140A CN110445141B CN 110445141 B CN110445141 B CN 110445141B CN 201910771140 A CN201910771140 A CN 201910771140A CN 110445141 B CN110445141 B CN 110445141B
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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
- H02J3/01—Arrangements for reducing harmonics or ripples
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
Abstract
The embodiment of the application provides an electric energy management control method and a control device, and relates to the technical field of power electronic control. The method comprises the steps of receiving sampling current sampled by a current transformer, calculating compensation demand according to the sampling current, obtaining a target instruction according to the compensation demand, and sending the target instruction to a slave machine so as to distribute capacity and allocate working state of the slave machine. The method distributes the capacity in a centralized way according to the dynamic change of the load and allocates the working state of each device in time, thereby solving the problem that the prior method can not distribute reasonably in time according to the actual requirement of the capacity.
Description
Technical Field
The application relates to the technical field of power electronic control, in particular to an electric energy management control method and a control device.
Background
The harmonic treatment device mainly comprises an active type and a passive type, and the passive type treatment device has larger volume and weight, is easy to generate resonance and is not easy to limit current and output; the active type treatment device has highly controllable and quick response performance, and can dynamically compensate harmonic waves and reactive requirements in a power grid in real time. The method adopted in the market at present is to connect N active filter devices in parallel and add a group of current transformers in series to perform current sharing compensation. The method causes the problem that timely and reasonable distribution cannot be carried out according to the actual requirement of the capacity.
Disclosure of Invention
An object of the embodiments of the present application is to provide a control method and a control device for an active power filter, which centrally allocate capacity according to dynamic changes of a load and allocate working states of each device in time, so as to solve the problem that the capacity cannot be allocated reasonably in time according to actual needs in the existing method.
The embodiment of the application provides an electric energy management control method, which is applied to a host in a master-slave control system, wherein the master-slave control system comprises: the method comprises the following steps that a master machine, a plurality of slave machines connected with the master machine in parallel and a current transformer connected with the master machine in series are adopted, and the method comprises the following steps:
receiving sampling current sampled by a current transformer;
calculating a compensation demand according to the sampling current;
acquiring a target instruction according to the sampling current;
and sending the target instruction to the slave machine so as to allocate the capacity and allocate the working state of the slave machine.
In the implementation process, the load current is detected through the current transformer, the load current is sampled to obtain the sampled current, the compensation demand is calculated according to the sampled current to obtain the target instruction, wherein the compensation demand comprises the harmonic compensation quantity and the reactive compensation quantity, the slave is subjected to capacity distribution and the working state of the slave is allocated, and therefore the problem that in the prior art, timely and reasonable distribution cannot be carried out according to the actual capacity requirement is solved.
Further, the target instructions include capacity allocation instructions and state control instructions; before the step of sending the target command to the slave to allocate the capacity and allocate the working state of the slave, the method further includes:
and layering a data flow channel for transmitting the target instruction according to the target instruction.
In the implementation process, the transmission channels of the capacity allocation instruction and the state control instruction are separated, so that the transmission efficiency can be improved, the periodic synchronization of data volume can be realized at a high speed, the working state of the slave computer can be switched quickly, and the requirements of capacity allocation and equipment working state allocation are met.
Further, the data stream channel includes a data command channel and a control command channel, and the target instruction performs layering on the data stream channel for transmitting the target instruction, including:
sending the capacity allocation instruction to a slave machine through a data command channel, and allocating the capacity of the slave machine;
and sending the state control instruction to a slave machine through a control command channel, and controlling the working state of the slave machine.
In the implementation process, the capacity allocation instruction is transmitted through the data command channel, the state control instruction is transmitted through the control command channel, the transmission of the capacity allocation instruction and the state control instruction is not interfered with each other, the transmission efficiency can be improved, the capacity allocation instruction can be guaranteed to be issued to all the slave machines in the control period of the equipment, meanwhile, the working states of the slave machines are synchronized to the host machine in the control period, and the host machine can allocate the working states of the slave machines conveniently.
Further, before the step of sending the target instruction to the slave, the method further comprises:
decomposing the frequency domain of all instruction currents required by capacity allocation in advance, obtaining a fundamental frequency component and a frequency domain amplitude, and performing time domain expansion according to a control cycle to analyze the instruction currents into modulated currents after frequency mixing, wherein the fundamental frequency component comprises a fundamental frequency active component, a fundamental frequency reactive component and an N-th harmonic component, and N is more than or equal to 2.
In the implementation process, the frequency domain of all possible command currents is decomposed into fundamental frequency components and frequency domain amplitudes in advance, time domain expansion is carried out on the fundamental frequency components and the frequency domain amplitudes, the fundamental frequency components and the frequency domain amplitudes are converted into mixed frequency signals, when a command is sent to a slave, a time domain proportional switch limiting mode of multi-frequency domain decomposition is adopted, and the mixed frequency modulation current is sent.
Further, before the step of sending the target instruction to the slave, the method further comprises:
and calculating the pre-planned capacity ratio of each slave according to the capacity of the slave.
In the implementation process, before the equipment enters a working state, the maximum capacity of all the slave machines is counted and calculated according to the working mode and the model of each slave machine, the maximum capacity duty ratio of each slave machine is planned in advance on the basis of the full capacity of the whole equipment, namely the working condition duty ratio of each slave machine in the working mode of all the slave machines, when the master machine allocates the capacity, the capacity allocation can be directly allocated according to the pre-planned capacity duty ratio of the slave machine without recalculation, the slave machines are allocated with the capacity, the calculation amount of a master machine algorithm in the running process, the control amount of communication data and the complexity of the algorithm are reduced, and the efficiency of the algorithm is improved.
Further, sending the target instruction to the slave to allocate the capacity to the slave includes:
receiving a target frequency band component sent by a slave machine;
acquiring a target proportion adjustment coefficient according to the target frequency band component and a pre-planned capacity ratio;
and sending the target proportion adjustment coefficient to the slave machine so as to allocate the capacity of the slave machine.
In the implementation process, the target frequency band component sent by the slave is received, and on the premise, a target proportion adjustment coefficient, that is, the capacity proportion allocated by the master to the slave corresponding to the target proportion adjustment coefficient is determined according to the pre-planned capacity proportion.
Further, sending the target instruction to the slave to allocate the working state of the slave, includes:
receiving state data of a slave;
determining a state control instruction according to the state data;
and sending the state control command to the slave machine so as to allocate the state of the slave machine.
In the implementation process, the master receives the state data of the slave, determines the state control command corresponding to the slave according to the state data, and sends the state control command to the slave through the corresponding data flow channel, so that the control state synchronization of the master to the slave is completed, and the control efficiency of the master to the slave is improved.
The embodiment of this application still provides a controlling means is administered to electric energy, and the device includes:
the sampling current receiving module is used for receiving sampling current sampled by the current transformer;
the compensation demand calculation module is used for calculating compensation demand according to the sampling current;
the target instruction acquisition module is used for acquiring a target instruction according to the compensation demand;
and the distribution control module is used for sending the target instruction to the slave machine so as to distribute the capacity and allocate the working state of the slave machine.
In the implementation process, the sampling current collected by the current transformer is received, the sampling current is calculated to obtain the compensation demand, the target instruction is determined according to the compensation demand and is sent to the slave computer, and the slave computer is subjected to capacity distribution and working state allocation, so that the problem that in the prior art, timely and reasonable distribution cannot be performed according to the actual capacity requirement is solved.
An embodiment of the present application further provides an electronic device, where the electronic device includes a memory and a processor, where the memory is used to store a computer program, and the processor runs the computer program to make the computer device execute the electric energy management control method in any one of the above first embodiments.
The embodiment of the present application further provides a readable storage medium, where computer program instructions are stored, and when the computer program instructions are read and executed by a processor, the method for controlling electric energy management according to any one of the first embodiment of the present application is executed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a flowchart of an electric energy management control method provided in an embodiment of the present application;
FIG. 2 is a flowchart illustrating a hierarchical transmission of a data stream channel for transmitting a target instruction according to an embodiment of the present disclosure;
FIG. 3 is a timing diagram illustrating control of a target instruction according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram illustrating an analysis process of resolving a command current into a modulated current after frequency mixing according to an embodiment of the present disclosure;
fig. 5 is a flowchart of capacity allocation for slaves according to an embodiment of the present application;
FIG. 6 is a schematic diagram illustrating a generation process of a target control current according to an embodiment of the present disclosure;
fig. 7 is a flowchart of allocating operating states of slaves according to an embodiment of the present disclosure;
fig. 8 is a block diagram of a structure of an electric energy management control device according to an embodiment of the present application;
fig. 9 is a block diagram of an overall structure of the electric energy governance control device provided in the embodiment of the present application.
Icon:
100-a sampling current receiving module; 200-compensation demand calculation module; 300-target instruction acquisition module; 400-allocating a control module; 410-capacity allocation module; 411-target frequency band component receiving module; 412-scale factor acquisition module; 413-capacity allocation submodule; 420-a state control module; 421-slave data receiving module; 422-control instruction determination module; 423-status control submodule; 510-capacity allocation instruction sending module; 520-state control command sending module.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Example 1
Referring to fig. 1, fig. 1 is a flowchart of an electric energy management control method provided in an embodiment of the present application, where the method is applied to a master in a master-slave control system composed of an APF (Active Power Filter) and an SVG (Static Var Generator), and the master-slave control system includes a master, a plurality of slaves (including the APF and the SVG) connected in parallel with the master, and a current transformer connected in series with the master. Based on the master-slave control system, the operation of a Digital Signal Processor (DSP) in the host is transmitted to the slave in a digital communication mode, so that the control of the slave is realized, the complex wiring operation caused by the series connection of current transformers is avoided, and the problems of calculation errors and circulation among a plurality of devices in the current-sharing compensation method are solved. In addition, the master-slave control system can control harmonic waves and reactive power according to load distribution capacity.
The method may specifically comprise the steps of:
step S100: receiving sampling current sampled by a current transformer;
in the implementation process, the current transformer can be arranged on the load side or on the master-slave control system side, and the fluctuation condition of the load current can be known regularly through sampling of the current transformer. Therefore, the number of the slave machines can be judged according to the load current.
Step S200: calculating a compensation demand according to the sampling current;
and a Digital Signal Processor (DSP) in the host machine calculates compensation demand according to the sampling current, wherein the compensation demand comprises harmonic compensation quantity and reactive compensation quantity.
Step S300: acquiring a target instruction according to the compensation demand;
the target instructions include a capacity allocation instruction and a state control instruction, and before executing step S300, the following steps are further required:
and layering the data stream channel for transmitting the target instruction according to the target instruction.
That is, different types of target instructions are transmitted hierarchically according to the specific types of the target instructions, and the purpose is to separate transmission channels of the different types of target instructions, so that the transmission efficiency can be improved, the periodic synchronization of data amount can be realized at high speed, the working state of the slave is switched rapidly, and the requirements of capacity allocation and equipment working state allocation are met.
For example, as shown in fig. 2, a flow chart for hierarchically transmitting a data stream channel for transmitting a target instruction is shown, where the data stream channel includes a data command channel and a control command channel, and the layering of the data stream channel for transmitting the target instruction according to the type of the target instruction includes:
step S311, sending the capacity allocation instruction to a slave machine through a data command channel, and allocating the capacity of the slave machine;
illustratively, as shown in fig. 3, a timing diagram of a control of a target instruction according to an embodiment of the present application is provided. The host completes the calculation of the capacity allocation command through the data command channel within 5ms (millisecond), the host transmits the capacity allocation command to the slave, and the slave receives the capacity allocation command and completes the calculation within 5ms, namely, the data cycle synchronization is completed within 10 ms.
And S312, sending the state control instruction to a slave machine through a control command channel, and controlling the working state of the slave machine.
For example, the master receives data and status returned by the corresponding slave within 5ms and confirms a status control command for the slave, the master sends the status control command to the slave, and the slave receives the status control command and completes the control status cycle synchronization within 5ms, that is, within 10 ms. The slave can update the target compensation amount and the device control mode once in 10 ms.
In the process, the capacity allocation instruction is transmitted through the data command channel, the state control instruction is transmitted through the control command channel, and the combined mode of the double hardware channels is adopted, so that the transmission of the capacity allocation instruction and the control command channel is not interfered with each other, the transmission efficiency can be improved, the capacity allocation instruction can be guaranteed to be issued to all the slave machines in the equipment control period, meanwhile, the working states of the slave machines are synchronized to the host machine in the control period, and the host machine can allocate the working states of the slave machines conveniently.
For example, in order to ensure real-time performance of the compensation demand, the data stream channel adopts a unidirectional UART (Universal Asynchronous Receiver/Transmitter) data transmission mode on a hardware circuit, the bit rate of a signal reaches 10Mb/s, and a high-speed parallel transmission medium is matched to reduce interference and improve transmission speed and transmission efficiency, so that the host can issue a target instruction to the slave within 5ms, the host can refresh the target instruction once within 5ms, and the slave can be controlled by using the compensation response speed of 10ms as a control cycle, thereby avoiding affecting normal operation of the slave. Therefore, the data stream channel ensures that the master-slave machine can synchronize all target instructions within a control period of 10ms, so that the number of the slave machines put into operation can be reasonably determined in time according to dynamic changes of loads, the slave machines in a standby state have extremely low power, the service life of the equipment is prolonged compared with the situation that the slave machines operate simultaneously, and noise and heat generated during simultaneous operation are reduced.
For example, before step S400, all the master/slave machines do not directly use the target command current corresponding to the target command in order to quickly switch the operating state of the slave machine. Before the master-slave control system enters the working mode, the command current is directly analyzed into modulation current for use through a hardware protocol analysis transcoding circuit of a Complex Programmable Logic Device (CPLD) and a time domain proportional switch limiting mode of multi-frequency domain decomposition is adopted.
Fig. 4 is a schematic diagram illustrating the decomposition process of analyzing the command current into the modulated current after mixing. The method comprises the following specific steps:
step S321: in a hardware instruction circuit in the CPLD, decomposing frequency domains of all instruction currents required for capacity allocation in advance according to working modes of slaves, obtaining fundamental frequency components and frequency domain amplitudes, and performing time domain expansion according to a control cycle to analyze the instruction currents into modulated currents after frequency mixing, wherein the fundamental frequency components comprise fundamental frequency active components, fundamental frequency reactive components, 2-order harmonic components, 3-order harmonic components, …, N-order harmonic components; wherein N is more than or equal to 2.
Before the master-slave control system operates, the CPLD internal hardware instruction circuit is planned in a frequency domain capability combination mode, so that the adjustment time after the equipment is started is not occupied, and the CPLD internal hardware instruction circuit can be planned in a standby state. A real-time parallel data interface is established by adopting CPLD hardware logic on the control of the inverter current, and the data volume is planned ahead by utilizing the expansion mode of frequency domain and time domain, so that the communication data flow can be reduced, and the communication efficiency between the host and the slave is improved.
Illustratively, before step S400, the method further comprises:
step S331: and calculating the pre-planned capacity ratio of each slave according to the capacity of the slave.
In the implementation process, according to the hardware functions of each slave machine, such as the working mode and the model, and the actual application requirements, the maximum capacity of each slave machine can be obtained, statistics and calculation are performed on the maximum capacity of all the slave machines, the maximum capacity occupation ratio of each slave machine is planned and calculated in advance on the basis of the full capacity of the full equipment, and the pre-planned capacity occupation ratio of each slave machine is obtained in standby, namely the working condition occupation ratio of each slave machine in the working mode of all the slave machines.
When the host allocates the capacity, the capacity corresponding to the slave can be directly allocated according to the pre-planned capacity ratio of the slave without recalculating the allocated capacity of the slave, thereby reducing the calculation amount of the host algorithm in the operation process, the control amount of communication data and the complexity of the algorithm and improving the efficiency of the algorithm.
Step S400: and sending the target instruction to the slave to allocate the capacity and allocate the working state of the slave.
As an example, as shown in fig. 5, a flow chart of capacity allocation to the slave is shown. Step S500 specifically includes the following steps:
step S411: receiving a target frequency band component sent by a slave machine;
step S412: acquiring a target proportion adjustment coefficient according to the target frequency band component and a pre-planned capacity ratio;
step S413: and sending the target proportion adjustment coefficient to the slave machine so as to allocate the capacity of the slave machine.
In the implementation process, as shown in fig. 6, a schematic diagram of a generation process of the target control current is shown. And receiving the target frequency band component sent by the slave machine, wherein the data of the target frequency band component is refreshed once every 10ms, so that the master machine can conveniently send the data according to the current frequency band component of the slave machine. And distributing a target proportion adjustment coefficient corresponding to the slave according to the compensation demand and the pre-planned capacity ratio, wherein the target proportion adjustment coefficient is the same as the pre-planned capacity ratio under the general condition, so that the calculation amount of a DSP (digital signal processor) in the host can be reduced, the algorithm efficiency is improved, and the algorithm complexity is reduced.
And determining a target control current according to the target frequency band component and the target proportion regulation coefficient, and performing capacity allocation on the slave machine through the target control current.
In particular, when the slave receives that the target scaling factor corresponding to the current capacity allocated by the master is 0, it indicates that the allocated capacity of the slave is 0, and indicates that the operation mode of the slave is the standby mode.
As can be seen from the above description, the master allocates the capacities of the slaves and the number of the running slaves in a centralized manner, so that the capacities of the slaves and the working state of the slaves can be allocated in time according to the dynamic changes of the load, the slaves which are not put into use are in a standby state, and the slaves in the standby state have extremely low power, so as to prolong the service life.
The hot standby control system is used as a comprehensive control system and can be used for describing a control mode of a master-slave control system to a slave and a standby mode of equipment in the embodiment of the application; the system has the advantages that a series of logic control is carried out through the hot standby function, the working and standby states among multiple modules such as a host, a slave and the like are allocated in real time, the number of the slaves in the working state is distributed in a centralized mode, the capacities corresponding to different slaves are controlled, and the compensation mode is adopted, so that the slaves in the standby state have extremely low power, the loss of the whole set of system equipment is reduced, and the service life of the system is prolonged.
The control system can also perform targeted compensation according to different load types, so that the compensation precision is improved.
After protection or abnormity occurs, the control system distributes the capacity to the slave machines which normally work for compensation, isolates the fault slave machines, and carries out isolation diagnosis on the fault slave machines.
For example, as shown in fig. 7, a flowchart of allocating the working state of the slave according to an embodiment of the present application is provided. Step S400 specifically includes the following steps:
step S421: receiving state data of a slave;
step S422: determining a state control instruction according to the state data;
step S423: and sending a state control command to the slave machine so as to allocate the working state of the slave machine.
In the implementation process, state data of the slave, such as the operation state, the stop state, the fault state and the like of the slave, is received, a state control instruction is determined according to the state data of the slave, and the state control instruction is sent to the slave to control the working state of the slave.
According to the method, the host receives the sampling current, the dynamic change of the load can be known in time, the slave capacity is centrally distributed according to the dynamic change of the load, and the working state of each slave is allocated in time, so that the problem that the existing method cannot carry out timely and reasonable distribution according to the actual requirement of the capacity is solved.
Example 2
The embodiment of the application also provides an electric energy management control method, which is applied to the DSP of the active filter equipment and mainly comprises the following steps:
on the host side of the master-slave control system:
step S10: the DSP of the host receives the sampling current, calculates the harmonic content and the reactive content in the sampling current, and determines the command current of the target compensation quantity;
step S11: then, calling a state distribution transfer function, and determining the current working state of the slave equipment, wherein the current working state comprises an operating state, a stopping state and a fault state;
step S12: calling a data distribution function in the DSP, and distributing the number, capacity and output modes of the slave machines, wherein the output modes comprise harmonic waves and reactive power;
step S13: and sending the target instruction data packet to the slave.
On the slave side:
step S14: receiving an instruction data packet, analyzing the instruction data packet to obtain a state control instruction, judging whether data or a command needs to be returned to the host, judging whether the working state of the slave is changed, and returning the working state data of the current slave to the host if the working state of the slave is changed;
step S16: analyzing a capacity allocation instruction;
step S17: the inverter executes a capacity allocation command to compensate.
Example 3
As shown in fig. 8, a block diagram of an electric energy management control device provided in an embodiment of the present application is shown, where the device includes a master-slave control system, and the master-slave control system includes: the system comprises a host, a plurality of slaves connected with the host in parallel and a current transformer connected with the host in series. The device also includes: CPLD hardware logic circuit and its data command channel and control command channel connected through parallel data interface.
The DSP of the device host comprises:
the sampling current receiving module 100 is configured to receive a sampling current sampled by the current transformer;
a compensation demand calculating module 200, configured to calculate a compensation demand according to the sampling current;
a target instruction obtaining module 300, configured to obtain a target instruction according to the compensation demand;
the allocation control module 400 is configured to send the target instruction to the slave, so as to allocate the capacity and allocate the working state of the slave.
In the implementation process, the sampling current receiving module 100 in the DSP of the master receives the sampling current of the current transformer, calculates the harmonic content and the reactive content in the sampling current, thereby determining the compensation demand, then determines the target instruction for the slave according to the determined compensation demand, sends the target instruction to the slave, allocates the capacity of the slave and allocates the working state of the slave, thereby solving the problem in the prior art that timely and reasonable allocation cannot be performed according to the actual demand of the capacity.
For example, as shown in fig. 9, a block diagram of a capacity allocation module 400 provided in the embodiment of the present application is shown. The apparatus further includes a data stream channel for transmitting the target command, and further, the target command includes a capacity allocation command and a status control command, and correspondingly, the data stream channel includes a data command channel and a control command channel, and the apparatus further includes a capacity allocation command sending module 510 and a status control command sending module 520.
The capacity allocation instruction sending module 510 is configured to send the capacity allocation instruction to a slave through a data command channel, and perform capacity allocation on the slave;
and a state control instruction sending module 520, configured to send the state control instruction to a slave through a control command channel, so as to control a working state of the slave.
In the implementation process, the instruction transmission channel of capacity allocation and the instruction transmission channel of state control are separated, and the host can realize the issuing and receiving of control instructions in a very short control period, so that the data transmission efficiency can be improved, and the compensation response speed can be improved.
For example, the allocation control module 400 includes a capacity allocation module 410 and a status control module 420, and the capacity allocation module 410 may include:
a target frequency band component receiving module 411, configured to receive a target frequency band component sent from a slave;
a scaling factor obtaining module 412, configured to obtain a target scaling factor according to the target frequency band component and a pre-planned capacity ratio;
and the capacity allocation submodule 413 is used for sending the target proportion adjustment coefficient to the slave so as to allocate the capacity of the slave.
For example, the state control module 420 may include:
a slave data receiving module 421, configured to receive status data of a slave;
a control instruction determining module 422, configured to determine a state control instruction according to the state data;
the state control sub-module 423 is configured to send the state control instruction to the slave, so as to perform state allocation on the slave.
Example 4
The embodiment of the present application further includes an electronic device, where the electronic device includes a memory and a processor, the memory is used to store a computer program, and the processor runs the computer program to make the computer device execute the electric energy governance control method according to any one of embodiments 1.
Example 5
The embodiment of the present application further includes a readable storage medium, where computer program instructions are stored, and when the computer program instructions are read and executed by a processor, the method for controlling electric energy management according to any one of embodiments 1 is executed.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (6)
1. An electric energy management control method is characterized in that the method is applied to a host in a master-slave control system, and the master-slave control system comprises the following steps: a master, a plurality of slaves connected in parallel with the master, a current transformer connected in series with the master, the method comprising:
receiving sampling current sampled by a current transformer;
calculating a compensation demand according to the sampling current;
acquiring a target instruction according to the compensation demand;
calculating the pre-planned capacity ratio of each slave according to the capacity of the slave;
sending the target instruction to the slave machine to allocate the capacity and allocate the working state of the slave machine, wherein the frequency domain of all instruction currents required by capacity allocation is decomposed in advance, a fundamental frequency component and a frequency domain amplitude value are obtained, time domain expansion is carried out according to a control cycle, so that the instruction currents are analyzed into modulated currents after frequency mixing, the fundamental frequency component comprises a fundamental frequency active component, a fundamental frequency reactive component and an Nth harmonic component, and N is more than or equal to 2;
wherein the sending the target instruction to the slave to allocate the capacity to the slave includes:
receiving a target frequency band component sent by the slave;
acquiring a target proportion adjustment coefficient according to the target frequency band component and a pre-planned capacity ratio;
sending the target proportion adjustment coefficient to a slave machine so as to distribute the capacity of the slave machine;
the sending the target instruction to the slave machine to allocate the working state of the slave machine includes:
receiving state data of the slave;
determining a state control instruction according to the state data;
and sending the state control command to the slave machine so as to allocate the state of the slave machine.
2. The electric energy governance control method of claim 1, wherein the target instructions comprise capacity allocation instructions and status control instructions; before the step of sending the target command to the slave to allocate the capacity and allocate the working state of the slave, the method further includes:
and layering a data flow channel for transmitting the target instruction according to the target instruction.
3. The electric energy governance control method of claim 2, wherein the data flow path comprises a data command path and a control command path, and the target command stratifies the data flow path for transmitting the target command, comprising:
sending the capacity allocation instruction to a slave machine through a data command channel, and allocating the capacity of the slave machine;
and sending the state control instruction to a slave machine through a control command channel, and controlling the working state of the slave machine.
4. An electrical energy governance control apparatus, the apparatus comprising:
the sampling current receiving module is used for receiving sampling current sampled by the current transformer;
the compensation demand calculation module is used for calculating compensation demand according to the sampling current;
the target instruction acquisition module is used for acquiring a target instruction according to the compensation demand;
the distribution control module is used for calculating the pre-planned capacity proportion of each slave according to the capacity of the slave, sending the target instruction to the slave so as to distribute the capacity and allocate the working state of the slave, wherein the frequency domain of all instruction currents required for capacity distribution is decomposed in advance, a fundamental frequency component and a frequency domain amplitude value are obtained, time domain expansion is carried out according to a control cycle so as to analyze the instruction currents into modulated currents after frequency mixing, the fundamental frequency component comprises a fundamental frequency active component, a fundamental frequency reactive component and an N-th harmonic component, wherein N is more than or equal to 2;
wherein, the distribution control module includes capacity distribution module and state control module, and the capacity distribution module includes:
a target frequency band component receiving module, configured to receive a target frequency band component sent by the slave;
the proportion coefficient acquisition module is used for acquiring a target proportion adjustment coefficient according to the target frequency band component and the proportion of the preplanned capacity;
the capacity allocation submodule is used for sending the target proportion adjustment coefficient to the slave machine so as to allocate the capacity of the slave machine;
the state control module includes:
the slave data receiving module is used for receiving the state data of the slave;
the control instruction determining module is used for determining a state control instruction according to the state data;
and the state control submodule is used for sending the state control instruction to the slave machine so as to allocate the state of the slave machine.
5. An electronic device, comprising a memory for storing a computer program and a processor for executing the computer program to cause the electronic device to perform the power management control method according to any one of claims 1 to 3.
6. A readable storage medium having stored thereon computer program instructions which, when read and executed by a processor, perform the power management control method of any of claims 1 to 3.
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