CN114629179A - Photovoltaic peak regulation method, device and system - Google Patents
Photovoltaic peak regulation method, device and system Download PDFInfo
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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
- H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
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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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
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Abstract
The application discloses a photovoltaic peak regulation method, a photovoltaic peak regulation device and a photovoltaic peak regulation system, wherein the photovoltaic peak regulation method comprises the following steps: issuing a photovoltaic output control instruction by primary scheduling; the secondary scheduling receives the photovoltaic output control instruction and generates a control strategy according to the photovoltaic output control instruction; and the third-level scheduling receives the control strategy and executes the control strategy. The method and the device can solve the problem that group control cannot be adjusted in a coordinated manner.
Description
Technical Field
The application relates to the technical field of peak shaving, in particular to a photovoltaic peak shaving method, device and system.
Background
At present, more and more distributed photovoltaics are connected into a power grid, but the distributed photovoltaics do not realize the coverage of universe users and group regulation and group control through power grid dispatching operation, and the problems of influencing power grid operation monitoring, load control and the like exist. With the increase of the capacity of distributed photovoltaic users, the number of grid-connected points is increased, and certain influence is also generated on the stable operation of a power grid. The existing control system is one of the bases of dispatching operation control, but the existing control system can only support voltage levels of 10kV and above, photovoltaic group dispatching and group control for more and more low-voltage users cannot be realized, and effective measures for local photovoltaic regulation and control are lacked.
Disclosure of Invention
The present application is proposed to solve the above-mentioned technical problems. The embodiment of the application provides a photovoltaic peak regulation method, device and system, which can solve the problem that group regulation and group control cannot be performed in a coordinated manner.
According to an aspect of the present application, there is provided a photovoltaic peak shaving method, comprising: issuing a photovoltaic output control instruction by primary scheduling; the secondary scheduling receives the photovoltaic output control instruction and generates a control strategy according to the photovoltaic output control instruction; and the third-level scheduling receives the control strategy and executes the control strategy.
In an embodiment, the receiving, by the secondary scheduling, the photovoltaic output control instruction, and generating the control policy according to the photovoltaic output control instruction includes: the secondary scheduling generates a photovoltaic output target value according to the photovoltaic output control instruction; the photovoltaic output target value is used for indicating the third-level dispatching to execute the control strategy, and the photovoltaic output target value is used for regulating and controlling the photovoltaic of the first grid connection.
In an embodiment, the receiving, by the secondary scheduling, the photovoltaic output control instruction, and generating the control policy according to the photovoltaic output control instruction includes: the secondary scheduling generates a direct control instruction according to the photovoltaic output control instruction and the voltage grade; and the direct control instruction is used for directly regulating and controlling the second grid-connected photovoltaic by secondary scheduling.
In one embodiment, the three-level scheduling receiving the control policy and performing comprises: and controlling the photovoltaic of a plurality of users in turn by the tertiary scheduling according to the control strategy.
In an embodiment, the three-level scheduling controls the photovoltaics of the plurality of users in turn according to the control policy includes: the third-level scheduling records the photovoltaic conditions of the users in each turn, and the turn command is issued again according to the photovoltaic conditions of the users in the previous turn; and controlling the photovoltaic of the plurality of users according to the turn instruction.
In an embodiment, the receiving, by the secondary scheduling, the photovoltaic output control instruction, and generating the control policy according to the photovoltaic output control instruction includes: the secondary scheduling generates a photovoltaic sequence according to the photovoltaic output control instruction and a preset photovoltaic range and according to the photovoltaic total capacity proportion managed and controlled by the tertiary scheduling; wherein the photovoltaic sequence is used to generate a control strategy.
In one embodiment, the three-level scheduling receiving the control policy and performing comprises: and the plurality of the three-level schedules respectively receive and execute the control strategy of the control area corresponding to each three-level schedule.
In an embodiment, the primary scheduling includes provincial scheduling, the secondary scheduling includes regional scheduling, and the tertiary scheduling includes county scheduling, wherein the photovoltaic peak shaving method further includes: the provincial dispatching issues a photovoltaic output control instruction to the plurality of the ground-level dispatching; the ground-level dispatches receive the corresponding photovoltaic output control instructions and generate a plurality of control strategies according to the photovoltaic output control instructions; and the plurality of county-level schedules respectively receive and execute the corresponding control strategies.
According to another aspect of the present application, there is provided a photovoltaic peak shaving apparatus comprising: the primary module is used for issuing a photovoltaic output control instruction in a primary scheduling mode; the secondary module is used for receiving the photovoltaic output control instruction through secondary scheduling and generating a control strategy according to the photovoltaic output control instruction; and the third-level module is used for receiving and executing the control strategy by the third-level scheduling.
According to another aspect of the present application, there is provided a photovoltaic peak shaving system comprising: a provincial dispatching device for managing photovoltaic output control within a provincial scope; the local dispatching device is in communication connection with the provincial dispatching device and is used for managing the overall dispatching of photovoltaic output within a regional range; the county-level adjusting device is in communication connection with the local adjusting device and is used for controlling photovoltaic peak shaving within a county domain range; and a controller connected with the provincial dispatching device, the local dispatching device and the county dispatching device, wherein the controller is used for executing the photovoltaic peak regulating method according to any one of the embodiments.
According to the photovoltaic peak regulation method, device and system, the distributed photovoltaic dispatching is more flexible and the operation is more efficient through the strategy of hierarchical control at all levels. Distributed photovoltaic is disassembled into reasonable levels, single control, group control and even full control are realized, and the stability and reliability of a power grid can be improved. All levels of cooperative operation can ensure the safe and stable operation of the power grid.
Drawings
The above and other objects, features and advantages of the present application will become more apparent by describing in more detail embodiments of the present application with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings, like reference numbers generally represent like parts or steps.
Fig. 1 is a schematic diagram of the structure of an automatic power generation control application and other applications.
Fig. 2 is a schematic flow chart of a photovoltaic peak shaving method according to an exemplary embodiment of the present application.
Fig. 3 is a schematic flow chart of a photovoltaic peak shaving method according to another exemplary embodiment of the present application.
Fig. 4 is a schematic flow chart of a photovoltaic peak shaving method according to another exemplary embodiment of the present application.
Fig. 5 is a schematic flow chart of a photovoltaic peak shaving method according to another exemplary embodiment of the present application.
Fig. 6 is a schematic structural diagram of a photovoltaic peak shaving device according to an exemplary embodiment of the present application.
Fig. 7 is a schematic structural diagram of a photovoltaic peak shaving apparatus according to another exemplary embodiment of the present application.
Fig. 8 is a block diagram of an electronic device provided in an exemplary embodiment of the present application.
Detailed Description
Hereinafter, example embodiments according to the present application will be described in detail with reference to the accompanying drawings. It should be understood that the described embodiments are only some embodiments of the present application and not all embodiments of the present application, and that the present application is not limited by the example embodiments described herein.
Summary of the application
At present, more and more distributed photovoltaics are connected into a power grid, but the distributed photovoltaics do not realize the coverage of universe users and group regulation and group control through power grid dispatching operation, and the problems of influencing power grid operation monitoring, load control and the like exist. With the increase of the capacity of distributed photovoltaic users, the number of grid-connected points is increased, and certain influence is also generated on the stable operation of a power grid. The existing control system is one of the bases of dispatching operation control, but the existing control system can only support voltage levels of 10kV and above, photovoltaic group dispatching and group control for more and more low-voltage users cannot be realized, and effective measures for local photovoltaic regulation and control are lacked.
With the continuous building and operation of new energy power stations, more new energy is consumed in the power grid, the characteristics of the power grid are greatly changed, the operation control is more complex, and higher requirements are provided for ensuring the safe and stable operation of the power grid and improving the grid control capability. Therefore, the integrated operation and the collaborative development of all levels of scheduling are necessary conditions for ensuring the safe and stable operation of the power grid.
Exemplary System
According to another aspect of the present application, there is provided a photovoltaic peak shaving system comprising: the provincial dispatching device is used for managing photovoltaic output control in a provincial scope; the local dispatching device is in communication connection with the provincial dispatching device and is used for managing the overall dispatching of the photovoltaic output in the region range; the county dispatching device is in communication connection with the local dispatching device and is used for managing and controlling photovoltaic peak regulation within a county area range; and the controller is connected with the provincial dispatching device, the local dispatching device and the county dispatching device, and is used for executing the photovoltaic peak regulating method provided by the application.
The controller can adopt power grid automatic power generation control application, the power grid automatic power generation control application is an application basis of the photovoltaic peak regulation system, the power grid automatic power generation control application utilizes real-time operation information of a power grid, and the power grid automatic power generation control application combines real-time scheduling plan information and real-time mode information to automatically adjust the adjustable and controllable equipment to realize closed-loop adjustment of the power grid.
Fig. 1 is a schematic structural diagram of an automatic generation control application and other applications, and as shown in fig. 1, the Automatic Generation Control (AGC) application includes two independent modules, namely a new energy AGC module and a conventional hydroelectric AGC module. The automatic power generation control application is connected with an SCADA (Supervisory Controil And Data AcquiSition System), a scheduling plan application And an online security analysis application. The automatic power generation control application is also in communication connection with a D5000 basic platform, the D5000 basic platform is used for supporting a power grid dispatching technology, and the D5000 basic platform is used for supporting the development and operation of a system for supporting the intelligent power grid dispatching technology, is responsible for providing general technical support for the development, operation and management of various applications, and provides guarantee for the integration and efficient and reliable operation of the whole system. And D5000, collecting various data of a scheduling data network by the basic platform, wherein the data collected by the scheduling data network are from a wind power plant monitoring system, a photovoltaic station monitoring system, an energy storage station monitoring system and a power plant monitoring system. The new energy AGC and the conventional AGC system belong to AGC application, but the new energy AGC and the conventional AGC system are completely independent and adopt an independent model table, a history template table and an independent process. The conventional hydroelectric AGC system enables power generation to automatically track load change by controlling active power of a generator set in a dispatching area, maintains system frequency as a rated value, and maintains power exchange of a power grid tie line. The new energy AGC system ensures the peak shaving and section safety of a power grid by controlling the active power output of a new energy station in a dispatching area, and consumes wind and light new energy as much as possible to generate power actively.
The automatic power generation control function established on the unified support platform of the intelligent power grid dispatching technology support system is one of the most basic applications of the intelligent power grid dispatching technology support system, and on the basis of a conventional hydroelectric AGC classical algorithm, a plurality of control targets suitable for new energy dispatching and control modes suitable for the control characteristics of new energy stations are designed by combining the control characteristics of the new energy stations and the new energy consumption requirements, so that the control requirement of a power grid on large-scale access of new energy can be met. The main functions of the new energy AGC comprise: the active automatic control of multi-region and multi-scene new energy is realized, various automatic and manual control modes of the new energy are provided, and different control requirements are met. And multiple control objects of regions and field groups are supported, and grouping and multi-principle priority and proportion allocation strategies based on the field groups are adopted to meet the requirements of fairness and safety. And a coordination control mode is designed, so that coordination control of the new energy AGC and the conventional AGC is facilitated.
According to the photovoltaic peak shaving set by Automatic Generation Control (AGC) application, the integrated operation of each level of dispatching and the multi-place and multi-level collaborative development can be realized.
The provincial dispatching device can be provided with a provincial dispatching AGC system, the provincial dispatching AGC system is responsible for overall dispatching of output of various power plants in a provincial range, the local dispatching device can be provided with a local dispatching AGC system, the local dispatching AGC system is responsible for overall dispatching of distributed photovoltaic output in a regional power grid range, the county dispatching device can be provided with a photovoltaic cost control system, and the photovoltaic cost control system is responsible for overall dispatching of 380V grid-connected distributed photovoltaic output in the regional power grid range. And performing hierarchical control, performing hierarchical management and cooperative control to realize the peak shaving function of the global distributed photovoltaic auxiliary power grid.
Exemplary method
Fig. 2 is a schematic flow chart of a photovoltaic peak shaving method according to an exemplary embodiment of the present application, and as shown in fig. 2, the photovoltaic peak shaving method includes:
step 100: and issuing a photovoltaic output control instruction in primary scheduling.
The primary dispatching is the highest dispatching, and the primary dispatching is responsible for controlling the output of the main power plant and the centralized photovoltaic in the management range and issuing the output control command of the distributed photovoltaic to the next-stage dispatching. The photovoltaic output control instruction sent by the first-stage dispatching further comprises an output peak-shaving target value used for indicating the photovoltaic output peak-shaving target values of all places of the next stage.
The first-level scheduling can bring the distributed photovoltaic into an adjustable range, develop a program for interfacing with a next-level system, and have a function of issuing a next-level distributed photovoltaic output target value.
Step 200: and the secondary dispatching receives the photovoltaic output control instruction and generates a control strategy according to the photovoltaic output control instruction.
And after the secondary dispatching receives the photovoltaic output control instruction sent by the primary dispatching, generating a control strategy. The control strategy comprises photovoltaic for controlling 10kV grid connection and photovoltaic for controlling 380V grid connection. The secondary scheduling can issue a control instruction to the 10kV grid-connected photovoltaic within the region range controlled by the secondary scheduling according to the voltage grade difference, or send a control strategy to the tertiary scheduling, and the tertiary scheduling regulates and controls the 380V grid-connected photovoltaic within the region range controlled by the tertiary scheduling according to the control strategy of the secondary scheduling.
The secondary scheduling is in communication connection with the primary scheduling, the secondary scheduling has a function of receiving the peak regulation target value issued by the primary scheduling and also has a function of generating 10kV photovoltaic control instruction batches, a control strategy can be realized, and the secondary scheduling also has an interface communicated with the tertiary scheduling and can issue the peak regulation target value to the tertiary scheduling step by step.
Step 300: and the third-level scheduling receives and executes the control strategy.
The third-level scheduling can receive a control strategy issued by the second-level scheduling and control 380V grid-connected photovoltaic of each household.
According to the photovoltaic peak regulation method, the distributed photovoltaic dispatching is more flexible and the operation is more efficient through the strategy of hierarchical control at all levels. Distributed photovoltaic is disassembled into reasonable levels, single control, group control and even full control are realized, and the stability and reliability of a power grid can be improved. All levels of cooperative operation can ensure the safe and stable operation of the power grid.
In an embodiment, step 200 may comprise: the secondary scheduling generates a photovoltaic output target value according to the photovoltaic output control instruction; the photovoltaic output target value is used for indicating a three-level scheduling execution control strategy, and the photovoltaic output target value is used for regulating and controlling the first grid-connected photovoltaic.
And after the secondary scheduling receives a photovoltaic output control instruction sent by the primary scheduling, generating a photovoltaic output target value, and regulating and controlling 380V grid connection in a region range controlled and controlled by the tertiary scheduling according to the photovoltaic output target value of the secondary scheduling. The first grid may include a 380V grid.
In an embodiment, step 200 may comprise: generating a direct control instruction by secondary scheduling according to the photovoltaic output control instruction and the voltage grade; and the direct control instruction is used for directly regulating and controlling the second grid-connected photovoltaic by secondary scheduling.
The secondary scheduling can also be used for issuing a direct control instruction to the photovoltaic of the second grid connection according to the photovoltaic output control instruction and the voltage grade distinction, and the second grid connection can comprise 10kV grid connection. And a 10kV photovoltaic control instruction is generated in batches through secondary scheduling, and a plurality of 10kV distributed photovoltaic control instructions can be directly controlled.
Fig. 3 is a schematic flow chart of a photovoltaic peak shaving method according to another exemplary embodiment of the present application, and as shown in fig. 3, step 300 may include:
step 310: and the third-level scheduling controls the photovoltaic of a plurality of users according to the control strategy and turns.
The tertiary scheduling can automatically adjust the control strategy of the secondary scheduling. For example, in order to share the profit loss caused by the photovoltaic control of the users, a mechanism of a round is introduced, each round contains all distributed photovoltaic, each household photovoltaic is controlled only once in each round in principle, and the next round is started after the round of photovoltaic control is finished. The three-level scheduling has a diary recording function, can automatically record information such as grid connection disconnection time, success or failure, annual grid disconnection times, power loss and the like of each photovoltaic grid, and is convenient for statistical analysis. After the three-level scheduling receives and executes the control strategy, the list, the quantity and the capacity of the uncontrolled photovoltaic can be obtained, and the uncontrolled photovoltaic is allowed to issue an instruction again for control.
Fig. 4 is a schematic flow chart of a photovoltaic peak shaving method according to another exemplary embodiment of the present application, and as shown in fig. 4, the step 310 may include:
step 311: and the photovoltaic conditions of the users in each round are recorded in the third-level scheduling mode, and the round instruction is issued again according to the photovoltaic conditions of the users in the previous round.
The three-level scheduling has a diary recording function, can automatically record information such as grid connection disconnection time, success or failure, annual grid disconnection times, power loss and the like of each photovoltaic grid, and is convenient for statistical analysis. After one round is finished, the three-level scheduling can obtain the list, the quantity and the capacity of the uncontrollable photovoltaic cells so as to issue control instructions to the uncontrollable photovoltaic cells again.
Step 312: and controlling the photovoltaic of a plurality of users according to the turn instruction.
And issuing a control instruction to the photovoltaic of a plurality of users according to the actual condition of each photovoltaic recorded by the three-level scheduling. The three-level scheduling can realize three functions of manual control, automatic overload control and peak shaving auxiliary control, can automatically adjust the control strategy issued by the two-level scheduling, and has a diary recording function according to the three-level scheduling during automatic adjustment.
In an embodiment, the step 200 may include: generating a photovoltaic sequence by the secondary scheduling according to the photovoltaic output control instruction and a preset photovoltaic range and according to the photovoltaic total capacity proportion managed and controlled by the tertiary scheduling; wherein the photovoltaic sequence is used to generate the control strategy.
And after receiving the peak regulation target value input by manual operation or primary scheduling, the secondary scheduling automatically generates a photovoltaic sequence which needs to be stopped in each tertiary scheduling area within the photovoltaic range of the selected tertiary scheduling area according to the photovoltaic total capacity proportion of each tertiary scheduling area, generates a control strategy according to the photovoltaic sequence, and sends the control strategy to the tertiary scheduling place. The method has the advantages that the auxiliary control of the region peak shaving is realized, the user can freely select each three-level scheduling region on a visual interface, and the three-level scheduling region is independently controlled according to the selection.
In an embodiment, the step 300 may include: and the plurality of three-level schedules respectively receive and execute the control strategy of the control area corresponding to each three-level schedule.
The three-level scheduling region can comprise a plurality of county-level regions, each county-level region comprises a plurality of consumer electricity photovoltaics, flexible grid-connected control of photovoltaic power generation in a cluster can be achieved, photovoltaic control is divided according to three-level scheduling responsibility regions, each three-level scheduling region only controls the photovoltaics of the region, and a plurality of three-level schedules respectively receive control strategies belonging to the region. The distributed photovoltaic dispatching is more flexible, and the operation is more efficient.
Fig. 5 is a schematic flowchart of a photovoltaic peak shaving method according to another exemplary embodiment of the present application, and as shown in fig. 5, the primary scheduling includes provincial scheduling, the secondary scheduling includes ground-level scheduling, and the tertiary scheduling includes county-level scheduling, where the photovoltaic peak shaving method may further include:
step 400: and issuing a photovoltaic output control instruction to a plurality of ground-level dispatches by the provincial dispatcher.
The provincial dispatching is responsible for overall dispatching of output of various power plants in a provincial region, main power plants and centralized photovoltaic output control in the provincial region are managed, the provincial dispatching is the first-level highest dispatching, and the provincial dispatching has the function of issuing regional distributed photovoltaic output target values.
The provincial dispatching can also carry out planning peak regulation and issue an output curve in the future time period in advance.
Step 500: and the plurality of ground-level dispatches receive the corresponding photovoltaic output control instructions and generate a plurality of control strategies according to the photovoltaic output control instructions.
The ground-level scheduling is responsible for overall scheduling of distributed photovoltaic output within a regional range, control instructions are issued to 10kV grid-connected photovoltaic according to voltage grade differentiation, or 380V grid-connected photovoltaic output target values are issued to county-level scheduling. The ground-level scheduling can generate 10kV photovoltaic control instructions in batches, and 10kV photovoltaic regional control is achieved.
Step 600: and the plurality of county-level schedules receive and execute the corresponding control strategies respectively.
The county-level scheduling is responsible for scheduling 380V grid-connected distributed photovoltaic output within a county-level power grid range, 380V grid-connected photovoltaic is controlled, and a control strategy is executed according to each county-level scheduling target value. According to the photovoltaic cluster division of county-level scheduling, flexible grid-connected control of photovoltaic power generation in the cluster can be achieved, photovoltaic control is divided according to county responsibility adjusting areas, and each county only controls the photovoltaic in the county.
And by means of a hierarchical control method of each level, scheduling integrated operation of each level and collaborative development of provinces, regions and counties are formed. According to the characteristics of the control system of each layer, the connection of scheduling of each layer is realized by combining the control strategy. Compared with the traditional photovoltaic peak regulation mode, the method can realize integral dispatching more quickly and more strongly. Distributed photovoltaic is disassembled into reasonable levels from distribution transformer level, line level, transformer station level to county and territory level, and single control, group control and even full control are realized.
Exemplary devices
Fig. 6 is a schematic structural diagram of a photovoltaic peak shaving device according to an exemplary embodiment of the present application, and as shown in fig. 6, the photovoltaic peak shaving device 8 includes: the primary module 81 is used for issuing a photovoltaic output control instruction in primary scheduling; the secondary module 82 is used for receiving the photovoltaic output control instruction through secondary scheduling and generating a control strategy according to the photovoltaic output control instruction; and a third-level module 83 for receiving and executing the control strategy in a third-level scheduling.
The photovoltaic peak regulation device provided by the application has the advantages that through the strategy of hierarchical control of all levels among the first-level module 81, the second-level module 82 and the third-level module 83, distributed photovoltaic scheduling is more flexible, and operation is more efficient. Distributed photovoltaic is disassembled into reasonable levels, single control, group control and even full control are realized, and the stability and reliability of a power grid can be improved. All levels of cooperative operation can ensure the safe and stable operation of the power grid.
In one embodiment, the secondary module 82 may include: the secondary scheduling generates a photovoltaic output target value according to the photovoltaic output control instruction; the photovoltaic output target value is used for indicating a three-level scheduling execution control strategy, and the photovoltaic output target value is used for regulating and controlling the first grid-connected photovoltaic.
In an embodiment, the secondary module 82 may further include: generating a direct control instruction by secondary scheduling according to the photovoltaic output control instruction and the voltage grade; and the direct control instruction is used for directly regulating and controlling the second grid-connected photovoltaic by secondary scheduling.
Fig. 7 is a schematic structural diagram of a photovoltaic peak shaving device according to another exemplary embodiment of the present application, and as shown in fig. 7, the three-stage module 83 may include: and a turn unit 831 for controlling the photovoltaics of the plurality of users in turns according to the control strategy by three-level scheduling.
In an embodiment, as shown in fig. 7, the rotation unit 831 may include: the recording subunit 8311 is configured to record the photovoltaic conditions of the multiple users in each round in a three-level scheduling manner, and issue a round instruction again according to the photovoltaic conditions of the multiple users in the previous round in the current round; and the control subunit 8312 is configured to control the photovoltaics of the multiple users according to the turn instruction.
In an embodiment, the secondary module 82 may further include: according to the photovoltaic output control instruction and a preset photovoltaic range, the secondary scheduling generates a photovoltaic sequence according to the photovoltaic total capacity proportion managed and controlled by the tertiary scheduling; wherein the photovoltaic sequence is used to generate the control strategy.
In one embodiment, the third-stage module 83 may include: and the plurality of three-level schedules respectively receive and execute the control strategy of the control area corresponding to each three-level schedule.
In an embodiment, as shown in fig. 7, the photovoltaic peak shaving apparatus 8 may include: the provincial dispatching module 84 is used for issuing a photovoltaic output control instruction to a plurality of regional dispatching modes in provincial dispatching; the ground dispatching module 85 is used for receiving corresponding photovoltaic output control instructions through a plurality of ground dispatching modules and generating a plurality of control strategies according to the photovoltaic output control instructions; and the county scheduling module 86 is used for receiving and executing the corresponding control strategies by the plurality of county-level schedules respectively.
Exemplary electronic device
Next, an electronic apparatus according to an embodiment of the present application is described with reference to fig. 8. The electronic device may be either or both of the first device and the second device, or a stand-alone device separate from them, which stand-alone device may communicate with the first device and the second device to receive the acquired input signals therefrom.
FIG. 8 illustrates a block diagram of an electronic device in accordance with an embodiment of the present application.
As shown in fig. 8, the electronic device 10 includes one or more processors 11 and memory 12.
The processor 11 may be a Central Processing Unit (CPU) or other form of processing unit having data processing capabilities and/or instruction execution capabilities, and may control other components in the electronic device 10 to perform desired functions.
Memory 12 may include one or more computer program products that may include various forms of computer-readable storage media, such as volatile memory and/or non-volatile memory. The volatile memory may include, for example, Random Access Memory (RAM), cache memory (cache), and/or the like. The non-volatile memory may include, for example, Read Only Memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium and executed by processor 11 to implement the photovoltaic peak shaver methods of the various embodiments of the present application described above and/or other desired functions. Various contents such as an input signal, a signal component, a noise component, etc. may also be stored in the computer-readable storage medium.
In one example, the electronic device 10 may further include: an input device 13 and an output device 14, which are interconnected by a bus system and/or other form of connection mechanism (not shown).
When the electronic device is a stand-alone device, the input means 13 may be a communication network connector for receiving the acquired input signals from the first device and the second device.
The input device 13 may also include, for example, a keyboard, a mouse, and the like.
The output device 14 may output various information including the determined distance information, direction information, and the like to the outside. The output devices 14 may include, for example, a display, speakers, a printer, and a communication network and its connected remote output devices, among others.
Of course, for simplicity, only some of the components of the electronic device 10 relevant to the present application are shown in fig. 8, and components such as buses, input/output interfaces, and the like are omitted. In addition, the electronic device 10 may include any other suitable components depending on the particular application.
The computer program product may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages, for carrying out operations according to embodiments of the present application. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server.
The computer-readable storage medium may take any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may include, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The foregoing description has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit embodiments of the application to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.
Claims (10)
1. A photovoltaic peak shaving method, comprising:
issuing a photovoltaic output control instruction by primary scheduling;
the secondary scheduling receives the photovoltaic output control instruction and generates a control strategy according to the photovoltaic output control instruction; and
and the third-level scheduling receives and executes the control strategy.
2. The photovoltaic peak shaving method of claim 1, wherein the secondary scheduling receiving the photovoltaic output control command and generating a control strategy according to the photovoltaic output control command comprises:
the secondary scheduling generates a photovoltaic output target value according to the photovoltaic output control instruction; the photovoltaic output target value is used for indicating the third-level dispatching to execute the control strategy, and the photovoltaic output target value is used for regulating and controlling the photovoltaic of the first grid connection.
3. The photovoltaic peak shaving method of claim 1, wherein the receiving the photovoltaic output control command by the secondary dispatch and generating a control strategy according to the photovoltaic output control command comprises:
the secondary scheduling generates a direct control instruction according to the photovoltaic output control instruction and the voltage grade; and the direct control instruction is used for directly regulating and controlling the second grid-connected photovoltaic by secondary scheduling.
4. The photovoltaic peak shaving method according to claim 1, wherein the three-level scheduling receives the control strategy and executes it comprises:
and the third-level scheduling controls the photovoltaic of a plurality of users according to the control strategy in turn.
5. The photovoltaic peak shaving method according to claim 4, wherein the three-level scheduling controls the photovoltaics of the plurality of users in turn according to the control strategy comprises:
the third-level scheduling records the photovoltaic conditions of the users in each turn, and the turn command is issued again according to the photovoltaic conditions of the users in the previous turn;
and controlling the photovoltaic of the plurality of users according to the turn instruction.
6. The photovoltaic peak shaving method of claim 1, wherein the secondary scheduling receiving the photovoltaic output control command and generating a control strategy according to the photovoltaic output control command comprises:
the secondary scheduling generates a photovoltaic sequence according to the photovoltaic output control instruction and a preset photovoltaic range and according to the photovoltaic total capacity proportion managed and controlled by the tertiary scheduling; wherein the photovoltaic sequence is used to generate a control strategy.
7. The photovoltaic peak shaving method according to claim 1, wherein the three-level scheduling receives the control strategy and executes it comprises:
and the plurality of the three-level schedules respectively receive and execute the control strategy of the control area corresponding to each three-level schedule.
8. The photovoltaic peak shaving method according to claim 1, wherein the primary schedule comprises a provincial schedule, the secondary schedule comprises a regional schedule, and the tertiary schedule comprises a county schedule, wherein the photovoltaic peak shaving method further comprises:
the provincial dispatching issues a photovoltaic output control instruction to the plurality of the ground-level dispatching;
the ground-level dispatches receive the corresponding photovoltaic output control instructions and generate a plurality of control strategies according to the photovoltaic output control instructions; and
and the plurality of county-level schedules respectively receive and execute the corresponding control strategies.
9. A photovoltaic peaking device, comprising:
the primary module is used for issuing a photovoltaic output control instruction in a primary scheduling mode;
the secondary module is used for receiving the photovoltaic output control instruction through secondary scheduling and generating a control strategy according to the photovoltaic output control instruction; and
and the third-level module is used for receiving and executing the control strategy by the third-level scheduling.
10. A photovoltaic peaking system, comprising:
a provincial dispatching device for managing photovoltaic output control within a provincial scope;
the local dispatching device is in communication connection with the provincial dispatching device and is used for managing the overall dispatching of the photovoltaic output within a regional range;
the county-level adjusting device is in communication connection with the local adjusting device and is used for controlling photovoltaic peak shaving within a county domain range; and
a controller connected to the provincial, local and county tuning devices, the controller being configured to perform the photovoltaic peak shaving method according to any one of the preceding claims 1-8.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114977173A (en) * | 2022-07-01 | 2022-08-30 | 国网河北省电力有限公司保定供电分公司 | Peak regulation method and device for low-voltage distributed photovoltaic |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114977173A (en) * | 2022-07-01 | 2022-08-30 | 国网河北省电力有限公司保定供电分公司 | Peak regulation method and device for low-voltage distributed photovoltaic |
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