Distributed photovoltaic converged communication resource scheduling method and system based on permeability analysis

Abstract

The invention discloses a distributed photovoltaic converged communication resource scheduling method and system based on permeability analysis, and the method comprises the steps: enabling a distributed photovoltaic system to be connected with a network controller through a service channel, calculating the photovoltaic capacity permeability, and transmitting a control signal for resource allocation according to whether the photovoltaic capacity permeability exceeds a threshold value or not; the distributed photovoltaic system is connected with the multi-mode communication assembly through a data channel, and the multi-mode communication assembly is connected with communication resources and schedules the communication resources according to the control signals. According to the invention, the system response speed can be improved, and on-demand allocation of network resources is realized.

Description

Technical Field

[0001] The present invention relates to the field of electric power information communication technology, and in particular to a resource scheduling method and system for distributed photovoltaic fusion communication. Background Art

[0002] After distributed photovoltaics are connected to the grid, their output characteristics are integrated into the load characteristics of the data used. There are communication problems such as network coverage, connection density, electromagnetic environment, and mixed protocols in high-penetration distributed photovoltaics and high-density load areas. There is a lack of effective autonomous communication structure to achieve the overall observability and measurability of massive distributed photovoltaics, resulting in most areas still not having the monitoring capability of distributed photovoltaics below 110kV, which restricts the flow analysis and voltage management of the medium and low voltage side power grids. The adjustable and controllable loads on the user side have small capacity, many types, large number, and wide distribution. The active response capability is insufficient and it is impossible to use the large user load method for regulation.

[0003] Moreover, currently most distributed terminals are existing devices on the user side, with low communication standardization and intelligence, uneven quality and generally low equipment online rate, which limits the construction and interaction of scenarios such as virtual power plants and microgrids. A control unit with regional autonomy is needed to realize full-scale collection and monitoring of distributed adjustable resources within the region and intelligent coordinated adjustment between regions. Summary of the invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a distributed photovoltaic fusion communication resource scheduling method and system based on permeability analysis, to improve system feedback efficiency and support real-time dynamic resource scheduling.

[0005] Technical solution: The distributed photovoltaic fusion communication resource scheduling method based on permeability analysis described in the present invention includes the following steps:

[0006] The distributed photovoltaic system is connected to the network controller through the service channel. The network controller calculates the photovoltaic capacity penetration rate and sends a control signal for resource allocation based on whether the photovoltaic capacity penetration rate exceeds a threshold. The distributed photovoltaic system is connected to the multi-mode communication component through the data channel. The multi-mode communication component is connected to the communication resources and the communication resources are scheduled according to the control signal.

[0007] Furthermore, it is characterized in that the calculation method of the photovoltaic capacity penetration rate is:

[0008]

[0009] Among them, λ pvs is the photovoltaic capacity penetration rate, S pv represents the distributed photovoltaic installed capacity in the distribution network area, P load For the electrical load.

[0010] Furthermore, if the photovoltaic capacity penetration rate exceeds a threshold, a network enhancement signal is sent, and the network controller allocates communication resources; otherwise, a network maintenance signal is sent, and the network controller maintains the current network state.

[0011] Furthermore, when the PV capacity penetration rate exceeds the threshold, the network controller increases the PV capacity penetration rate by a step size of B. S To allocate bandwidth, the actual service bandwidth is less than the allocated bandwidth Allocable bandwidth The service traffic of the current slice.

[0012] Furthermore, the threshold is not less than 30%.

[0013] Furthermore, the communication resources are implemented by virtual end-to-end connections based on Ethernet, and different communication resources are composed of mutually isolated sliced ​​Ethernet channels.

[0014] Furthermore, the access network uses L2VPN network to build the bearer network uses MPLS VPN to build L3VPN network, and L2VE interface and L3VE3 interface are created in each module of the multi-mode communication component. The L2VE interface is used to realize the connection between the distributed photovoltaic system and the L2VPN network, and the L3VE interface is used to realize the access of external communication resources.

[0015] The distributed photovoltaic fusion communication resource scheduling system based on permeability analysis of the present invention comprises: a distributed photovoltaic system, a network controller and a multi-mode communication component, wherein the multi-mode communication component is connected to communication resources;

[0016] The distributed photovoltaic system is connected to the network controller through the service channel. The network controller calculates the photovoltaic capacity penetration rate and sends a control signal for resource allocation based on whether the photovoltaic capacity penetration rate exceeds a threshold. The distributed photovoltaic system is connected to the multi-mode communication component through the data channel. The multi-mode communication component is connected to the communication resources and the communication resources are scheduled according to the control signal.

[0017] The electronic device described in the present invention includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the computer program is loaded into the processor, the distributed photovoltaic fusion communication resource scheduling method based on permeability analysis is implemented.

[0018] The computer-readable storage medium of the present invention stores a computer program, and when the computer program is executed by a processor, the distributed photovoltaic fusion communication resource scheduling method based on permeability analysis is implemented.

[0019] Beneficial effects: Compared with the prior art, the advantages of the present invention are: (1) The present invention utilizes the service channel to connect the network controller to calculate the penetration rate for resource allocation, and utilizes the data channel to complete the communication resource scheduling, which can effectively improve the system feedback efficiency and support real-time dynamic resource scheduling; (2) Distributed photovoltaic integrated communication resource scheduling is implemented by Ethernet virtual end-to-end link, which belongs to the new generation of integrated bearer network architecture, and has the technical advantages of low latency, large bandwidth, ultra-high precision synchronization, flexible control, etc., which can support the on-demand scheduling of distributed photovoltaic communication resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a flow chart of the converged communication resource scheduling method of the present invention;

[0021] Figure 2 Schematic diagram of the access network and bearer network of the present invention. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0023] Aiming at the problem of distributed photovoltaic integrated communication resource scheduling, distributed photovoltaic communication resources are optimized and scheduled on demand. Figure 1 As shown, the converged communication resource scheduling method includes the following contents.

[0024] Distributed photovoltaic systems are connected to multi-mode communication components through their respective communication modes. Multi-mode communication components connect communication resources with different communication capabilities. The network controller can control the modules in the multi-mode communication components to achieve dynamic connection between distributed photovoltaics and different communication resources. The connection mode is calculated and determined by the network controller to achieve the scheduling of network resources.

[0025] Communication resources are realized by virtual end-to-end connections based on Ethernet. Different communication resources are composed of isolated slice Ethernet (SE) channels. These channels provide L1-based low latency, hard isolation and security protection functions for multi-service bearing, and realize end-to-end performance detection and enhanced communication capabilities of the slice channel layer. Among them: the communication access of photovoltaic control data uses L2VPN and L3VPN; the addressing uses multiple addressing mechanisms such as IP / MPLS / 802.1Q / physical port for service mapping, providing service identification, diversion and QoS guarantee processing; the exchange uses enhanced SR-TP tunnels to provide service bearing and data exchange.

[0026] The access network builds an L2VPN network based on VLL (virtual Leased Line) technology and transmits transparent data on the MPLS network. The bearer network is built based on MPLS VPN technology and creates two interfaces, L2VE (Layer 2 Virtual Ethernet) and L3VE (Layer 3 Virtual Ethernet), in the multi-mode communication module. The L2VE interface is used to connect distributed photovoltaics with L2VPN, and the L3VE interface is used to access external communication resources.

[0027] The dual-channel mode of business channel and data channel is adopted to realize the scheduling of photovoltaic communication resources. The business channel is connected to the network controller to collect and analyze the photovoltaic penetration rate at the current moment. The network controller adjusts the communication resources of the data channel according to the penetration rate parameters to realize integrated communication.

[0028] The network controller calculates the distributed photovoltaic access evaluation index, obtains the penetration index parameter, and outputs the control signal. The details are as follows:

[0029] Calculating PV Capacity Penetration S pv It represents the installed capacity of distributed photovoltaic power generation in the distribution network area, in MWp, that is, the maximum power that can be output at the peak time, P load For the electrical load.

[0030] Set the threshold x:

[0031] If pvs >x, send network enhancement signal A, and the network controller allocates enhanced network resources;

[0032] If pvs ≤x, send network hold signal B, and the network controller maintains the current network status.

[0033] Generally speaking, the so-called high penetration rate refers to high energy penetration rate, which requires that the proportion of distributed photovoltaic power generation in the distribution network load power consumption reaches more than 30%, that is, x ≥ 30%.

[0034] When sending the network enhancement signal A, the network controller determines the resource allocation and slice adjustment strategy to achieve dynamic resource allocation optimization, thereby achieving efficient communication between nodes and further improving the networking efficiency of the autonomous communication domain. S (Unit: bps) to allocate bandwidth, ensuring that the actual service bandwidth is less than the allocated bandwidth (Unit: bps). The actual bandwidth that can be allocated and used (unit: bps) is:

[0035]

[0036] in, (Unit: bit) is the service flow of the current slice. When the service flow in the network slice exceeds a certain proportion (for example, 95%) of the allocated bandwidth within a certain period of time, the network coordinator will dynamically expand the allocated bandwidth to avoid service degradation or blocking. The threshold time is determined based on the average communication time between the sender and the receiver in the distributed photovoltaic service.

[0037] The method of the present invention is described below using a specific case.

[0038] The network controller calculates the distributed photovoltaic access evaluation index, obtains the penetration index parameter, and outputs the control signal. The details are as follows:

[0039] When the distributed photovoltaic installed capacity S in the distribution network area pv =10MWp, maximum power load P load =20MWp, the photovoltaic capacity penetration rate λ pvs =50%. Set the threshold x=30%.

[0040] At this time λ pvs >x, send network enhancement signal A, and the network controller allocates enhanced network resources.

[0041] The network controller takes a step size B S =5Mbps to allocate bandwidth, ensuring that the actual service bandwidth is less than the allocated bandwidth If the current slice's business traffic The actual bandwidth that can be allocated is:

[0042]

[0043] When the service traffic in the network slice continuously exceeds 95% of the allocated bandwidth within a period of time, the network orchestrator will dynamically expand the allocated bandwidth to avoid service degradation or blocking.

[0044] When the distributed photovoltaic installed capacity S in the distribution network area pv =10MWp, maximum power load P load =40MWp, the photovoltaic capacity penetration rate λ pvs =25%. Set the threshold x=30%.

[0045] At this time λ pvs ≤x, send network hold signal B, and the network controller maintains the current network status.

[0046] The distributed photovoltaic fusion communication resource scheduling system based on permeability analysis of the present invention comprises: a distributed photovoltaic system, a network controller and a multi-mode communication component, wherein the multi-mode communication component is connected to communication resources;

[0047] The distributed photovoltaic system is connected to the network controller through the service channel. The network controller calculates the photovoltaic capacity penetration rate and sends a control signal for resource allocation based on whether the photovoltaic capacity penetration rate exceeds a threshold. The distributed photovoltaic system is connected to the multi-mode communication component through the data channel. The multi-mode communication component is connected to the communication resources and the communication resources are scheduled according to the control signal.

[0048] The electronic device described in the present invention includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the computer program is loaded into the processor, the distributed photovoltaic fusion communication resource scheduling method based on permeability analysis is implemented.

[0049] The computer-readable storage medium of the present invention stores a computer program, and when the computer program is executed by a processor, the distributed photovoltaic fusion communication resource scheduling method based on permeability analysis is implemented.

[0050] The computer-readable storage media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, flash memory, or any other medium that can be used to store program code in the form of instructions or data structures and that can be accessed by a computer.

[0051] The processor is used to execute the computer program stored in the memory to implement each step of the method involved in the above embodiment.

Claims

1. A distributed photovoltaic fusion communication resource scheduling method based on penetration analysis, characterized in that: The steps include: The distributed photovoltaic system is connected to the network controller through the service channel. The network controller calculates the photovoltaic capacity penetration rate and sends a control signal for resource allocation based on whether the photovoltaic capacity penetration rate exceeds a threshold. The distributed photovoltaic system is connected to the multi-mode communication component through the data channel. The multi-mode communication component is connected to the communication resources and the communication resources are scheduled according to the control signal.

2. The distributed photovoltaic fusion communication resource scheduling method based on penetration analysis according to claim 1 is characterized in that: The calculation method of the photovoltaic capacity penetration rate is: Among them, λ pvs is the photovoltaic capacity penetration rate, S pv represents the distributed photovoltaic installed capacity in the distribution network area, P load For the electrical load.

3. The distributed photovoltaic fusion communication resource scheduling method based on penetration analysis according to claim 1 is characterized in that: If the PV capacity penetration rate exceeds the threshold, a network enhancement signal is sent and the network controller allocates communication resources; otherwise, a network maintenance signal is sent and the network controller maintains the current network status.

4. The distributed photovoltaic fusion communication resource scheduling method based on penetration analysis according to claim 3 is characterized in that: When the PV capacity penetration rate exceeds the threshold, the network controller increases the PV capacity penetration rate by a step size of B. S To allocate bandwidth, the actual service bandwidth is less than the allocated bandwidth Allocable bandwidth The service traffic of the current slice.

5. The distributed photovoltaic fusion communication resource scheduling method based on penetration analysis according to claim 1 is characterized in that: The threshold value is not less than 30%.

6. The distributed photovoltaic fusion communication resource scheduling method based on penetration analysis according to claim 1 is characterized in that: The communication resources are implemented by virtual end-to-end connections based on Ethernet, and different communication resources are composed of mutually isolated sliced ​​Ethernet channels.

7. The distributed photovoltaic fusion communication resource scheduling method based on penetration analysis according to claim 1 is characterized in that: The access network uses MPLS VPN to build an L2VPN network; the bearer network uses MPLS VPN to build an L3VPN network, and creates L2VE interfaces and L3VE3 interfaces in each module of the multi-mode communication component. The L2VE interface is used to connect the distributed photovoltaic system with the L2VPN network, and the L3VE interface is used to access external communication resources.

8. A distributed photovoltaic fusion communication resource scheduling system based on penetration analysis, characterized in that: include: Distributed photovoltaic system, network controller and multi-mode communication component, the multi-mode communication component connects communication resources; The distributed photovoltaic system is connected to the network controller through the service channel. The network controller calculates the photovoltaic capacity penetration rate and sends a control signal for resource allocation based on whether the photovoltaic capacity penetration rate exceeds a threshold. The distributed photovoltaic system is connected to the multi-mode communication component through the data channel. The multi-mode communication component is connected to the communication resources and the communication resources are scheduled according to the control signal.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the computer program is loaded into a processor, the distributed photovoltaic fusion communication resource scheduling method based on permeability analysis according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the distributed photovoltaic integrated communication resource scheduling method based on permeability analysis according to any one of claims 1 to 7 is implemented.

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