A power precise load control communication guarantee system and method based on 5G slicing

Abstract

The present invention discloses a power precise load control communication guarantee system and method based on 5G slicing, including a power precise load control service SLA perception module, a power precise load control slice template design and instantiation module, a power precise load control slice deployment and operation module, and a power precise load control slice optimization and coordination module. Among them, the power precise load control service SLA perception module determines the network status index according to the service demand; the power precise load control slice template design and instantiation module matches resources according to the slice demand, creates an end-to-end slice template and instantiates it; the power precise load control slice deployment and operation module deploys the instantiated slice to the power 5G infrastructure for operation; the power precise load control slice optimization and coordination module optimizes and adjusts the virtualized resources and network parameters of the slice deployment. The present invention can improve the support and guarantee capabilities of the power 5G for precise load control services and low-latency, high-reliability, and high-security uRRLC power services.

Description

Technical Field

[0001] The present invention relates to the field of 5G power communication technology, and in particular to a power precise load control communication guarantee system and method based on 5G slicing. Background Art

[0002] The development of 5G has played a huge role in promoting the deep integration of power information and communication technology and power business, enabling power users to meet their customized needs for network functions, business flexibility, scalability, controllability, etc.

[0003] The precise load control system is a system protection network with interruptible loads as specific control objects. When the power grid needs it, the interruptible loads are accurately matched according to the control quantity and are quickly controlled in batches. The communication objects of the precise load control communication system include the branch switches and metering devices in the power distribution room of the power users at the access layer, as well as the upper aggregation sites at all levels of the backbone aggregation layer. It focuses on solving problems such as rapid frequency drop in the early stage of power grid failure, over-limit of main channel current, excessive power use of inter-provincial interconnection lines, and insufficient rotating reserve of the power grid. According to different control requirements, it is divided into millisecond-level control systems for realizing rapid load control and more friendly and interactive second-level and minute-level control systems.

[0004] The precise load control system based on the 5G communication network consists of business terminals, demand response terminals, communication networks and master station systems. Among them, the business terminal accesses the building demand response terminal through the local network, and the demand response terminal accesses the demand response system master station through the 5G communication network. The precise load control system needs to quickly restore the supply and demand balance of the large power grid and ensure that the power grid frequency returns to normal (50Hz) within about 650 milliseconds after the DC locking fault occurs. Therefore, the transmission delay of the load shedding instruction communication channel from the master station to the terminal cannot exceed 50 milliseconds. The less the delay of the entire set of precise load control systems, the faster the grid fault can be restored. Existing load control systems mostly use optical fiber links for communication, which limits the deployment flexibility. The load control application using 5G communication is only used as a replacement for communication means, and has not been able to give full play to the advantages of 5G in resource optimization and business customization. Summary of the invention

[0005] The purpose of the present invention is to provide a power precise load control communication guarantee system and method based on 5G slicing, so as to improve the support and guarantee capabilities of power 5G for precise load control services and other low-latency, high-reliability, and high-security uRRLC power services.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] The present invention provides a power precise load control communication guarantee system based on 5G slicing, the system is deployed on a power precise load control service terminal, and includes a power precise load control service SLA perception module, a power precise load control slice template design and instantiation module, a power precise load control slice deployment and operation module, and a power precise load control slice optimization and coordination module;

[0008] The power precise load control service SLA perception module is used to determine the network status index according to the service requirements;

[0009] The power precise load control slice template design and instantiation module is used to match resources according to slice requirements and network status indicators, create end-to-end slices, and instantiate them;

[0010] The power precise load control slice deployment and operation module is used to deploy the instantiated slices to the power 5G infrastructure for operation;

[0011] The power precise load control slice optimization collaboration module is used to optimize and adjust the virtualized resources and network parameters deployed in the slices according to the precise load control strategy to ensure SLA requirements by monitoring the business support capabilities of network resources in real time.

[0012] Furthermore, the business requirement includes any one of the following:

[0013] In the early stages of a power grid fault, the frequency drops rapidly, the power flow in the trunk channel exceeds the limit, the power of the inter-provincial interconnection lines is over-utilized, and the power grid's rotating reserve is insufficient.

[0014] Furthermore, the network status indicator includes:

[0015] Service delay, service working cycle, service bandwidth, reliability indicators, data flow and communication indicators.

[0016] Further, the power precise load control slice template design and instantiation module includes a communication service management component, a slice management component and a sub-slice management component;

[0017] The communication service management component is used to send the slice requirements and network status indicators of power precise load control as the precise load control service SLA requirements to the slice management component; and to verify the feasibility of the created power precise load control slice;

[0018] The slice management component and sub-slice management component are used to match resources according to the precise load control business SLA requirements, create end-to-end slices, and instantiate them.

[0019] Furthermore, the end-to-end slices are divided into two types of slices that are interrelated:

[0020] One is business slicing, which is used for communication between the master station, slave station, and precise load control terminal of the power precise load control business;

[0021] The other type is business-aware slicing, which is used to transmit status information and SLA information for precise power load control operations.

[0022] The present invention also provides a method for ensuring precise power load control communication based on 5G slicing, including:

[0023] The slicing requirements and network status indicators of power load control are used as the SLA requirements of the power load control service.

[0024] Match resources according to the precise load control service SLA requirements, create end-to-end slices, and instantiate them; the end-to-end slices include service slices and service-aware slices;

[0025] Deploy instantiated slices to run on the power 5G infrastructure;

[0026] Optimize and adjust the virtualized resources and network parameters of slice deployment to ensure SLA requirements.

[0027] Furthermore,

[0028] The power precise load control slice requirements are divided into dispatching level control system SLA-I and marketing level control system SLA-II. The two levels of communication are master-slave mode, permanently online, and the error rate of exclusive slice resources is no more than 10 -4 ;

[0029] The network status indicators include: SLA-I end-to-end delay requirement is less than 650ms, the delay requirement from the control master station to the precise load-controlled service terminal is not less than 50ms, the bandwidth is less than 256kps, and the access density is less than 1000 / 100 square kilometers;

[0030] SLA-II requires that the end-to-end delay should be less than 5 minutes and the bandwidth should not exceed 48 kbps.

[0031] Furthermore,

[0032] The resource matching according to the precise load control service SLA requirements includes:

[0033] Obtain the load perception data uploaded by the sensor and send instructions to the slice management system deployed in the precise load control business terminal to configure slice resources and expand or reduce resources.

[0034] If the current network resources are greater than the slice SLA requirements, the slice management system reduces the resource configuration of the slice;

[0035] If the current network resources are less than the slice SLA requirements, the slice management system increases the resource configuration of the slice.

[0036] Furthermore, the operation mode is a virtualization-based SDN / NFV mode.

[0037] Furthermore, the optimization and adjustment of the virtualized resources and network parameters of the slice deployment includes:

[0038] The optimal slice resource allocation is optimized and adjusted according to the following methods:

[0039] R (opt) =min{B (opt) ,T (opt) ,C (opt) ,M (opt)},

[0040]

[0041]

[0042]

[0043]

[0044] Among them, R (opt) is the optimal slice resource allocation, B (opt) ,T (opt) ,C (opt) ,M (opt) are respectively the optimal bandwidth, optimal delay, optimal reliability index and optimal other requirements, B (t) i 、T (t) i , C (t) i 、M (t) i are the slice resource requirements collected at the current time t, i=1 represents the service slice, i=2 represents the service-aware slice, B (0) i 、T (0) i , C (0) i 、M (0) i They are the slice resource requirements specified in the power precise load control business slice template.

[0045] The beneficial effects achieved by the present invention are:

[0046] The present invention can improve the support and guarantee capabilities of electric power 5G for precise load control services and other low-latency, high-reliability, and high-security uRRLC electric power services. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 Provides precise power load control service topology based on 5G slicing;

[0048] Figure 2 To accurately control business slice operation and optimize processes. DETAILED DESCRIPTION

[0049] The present invention is further described below. The following examples are only used to more clearly illustrate the technical solution of the present invention, and are not intended to limit the protection scope of the present invention.

[0050] An embodiment of the present invention provides a power precise load control communication guarantee system based on 5G slicing, which is deployed on a power precise load control service terminal, including a power precise load control service SLA perception module, a power precise load control slice template design and instantiation module, a power precise load control slice deployment and operation module, and a power precise load control slice optimization collaboration module.

[0051] In this embodiment, the SLA perception module of the power precise load control service is used to determine the network status indicators according to the business requirements. Among them, the business requirements include: rapid frequency drop at the initial stage of power grid failure, trunk channel flow exceeding the limit, inter-provincial interconnection line power overuse, and insufficient power grid rotating reserve. The network status indicator requirements are shown in Table 1 below:

[0052] Table 1 Network status indicators

[0053]

[0054] In this embodiment, the power precise load control slice template design and instantiation module is implemented through three components: communication service management (CSMF), slice management (NSMF) and sub-slice management (NSSMF). CSMF is used to send the slice requirements and communication indicators of power precise load control as the SLA requirements of the precise load control service to NSMF. NSMF and NSSMF are used to match resources according to the SLA requirements of the precise load control service, create end-to-end slice templates, and instantiate. CSMF is used to verify the feasibility of the created power precise load control slice.

[0055] In this embodiment, the slice template is divided into two interrelated slices. One is the business slice, which is responsible for the communication between the master station, slave station, and precise load control terminal of the power precise load control business; the other is the business perception slice, which is responsible for transmitting the status information and SLA guarantee information of the power precise load control operation.

[0056] It should be noted that the slice template is universal and can be instantiated into different types through parameter configuration.

[0057] In this embodiment, the power precise load control slice deployment and operation module is used to deploy the instantiated slices to the power 5G infrastructure for operation.

[0058] As a preferred implementation mode, the operation mode in this embodiment is a virtualized SDN / NFV mode. By sharing infrastructure hardware resources, the wireless side of the precise load control system selects the appropriate access and mobility management function (AMF). The instantiated AMF selects the appropriate session management function (SMF) and user function interface (UPF) according to the precise load control service, and selects the form of exclusive network function (NF) to achieve secure isolation from other business slices.

[0059] In this embodiment, the power precise load control slice optimization coordination module is used to optimize and adjust the virtualized resources and network parameters deployed in the slices by real-time monitoring of the service support capabilities of network resources, according to the precise load control strategy, to obtain the optimization direction, automatically respond to regional function improvement, and ensure the service SLA requirements. The specific precise load control strategy is:

[0060] Assume that the slice resource set allocated by the 5G network to the power precise load control service is: R = {B, T, C, M}, where B is bandwidth, T is latency, C is reliability, and M is other definable resource requirements. The resource requirements specified in the power precise load control service slice template are: The current resource requirements for power precision load control slicing are: R (t) = {B (t) i ,T (t) i ,C (t) i ,M (t) i |i=1,2}, respectively representing the resource overhead of the service slice and service-aware slice collected at time t.

[0061] The optimal slice resource allocation is adjusted according to the following optimization formula:

[0062] R (opt) =min{B (opt) ,T (opt) ,C (opt) ,M (opt)},in:

[0063]

[0064]

[0065]

[0066]

[0067] Another embodiment of the present invention provides a method for ensuring precise power load control communication based on 5G slicing, including:

[0068] The slicing requirements and communication indicators of power load control are used as the SLA requirements of the load control service.

[0069] Match resources according to the precise load control business SLA requirements, create an end-to-end slice template, and instantiate it;

[0070] Deploy instantiated slices to run on the power 5G infrastructure;

[0071] Optimize and adjust the virtualized resources and network parameters of slice deployment to improve communication response.

[0072] It should be noted that, in this embodiment, based on Figure 1 The topology shown implements the precise load control method. In this topology, the service master station is connected to the 5G network through the power private network (optical fiber), the precise load control service terminal is connected to the 5G network, and the sensor uploads the load sensing data to the precise load control service terminal through the RS458 fieldbus protocol. The precise load control service terminal carries the precise load control communication guarantee service for power.

[0073] As a preferred implementation, the slice requirements and communication indicators include:

[0074] According to different control requirements, it is divided into dispatching level control system SLA-I and marketing level control system SLA-II. The two levels of communication are master-slave mode, permanently online, and the bit error rate of exclusive slice resources is no more than 10 -4 , the communication reliability requirement is higher than 99.999%. Among them, SLA-I requires end-to-end delay to be less than 650ms, control master station to terminal delay to be no less than 50ms, bandwidth to be less than 256kps, access density to be less than 1000 / 100 square kilometers; SLA-II requires end-to-end delay to be less than 5min, bandwidth to be no more than 48kbps.

[0075] As a preferred implementation, resources are matched according to the SLA requirements of the precise load control service, as follows:

[0076] The precise load control business terminal obtains the load perception data uploaded by the sensor and sends instructions to the slice management system to configure slice resources and expand or reduce resources.

[0077] (1) If the current network resources are greater than the slice SLA requirements, the slice management system reduces the resource configuration of the slice;

[0078] (2) If the current network resources are less than the slice SLA requirements, the slice management system increases the resource configuration of the slice.

[0079] It should be noted that the slice management system can also be deployed on precise load control business terminals.

[0080] As a preferred implementation, the virtualized resources and network parameters of the slice deployment are optimized and adjusted according to the network resources and power precise load control communication SLA status, as follows:

[0081] Assume that the slice resource set allocated by the 5G network to the power precise load control service is: R = {B, T, C, M}, where B is bandwidth, T is latency, C is reliability, and M is other definable resource requirements. The resource requirements specified in the power precise load control service slice template are: The current resource requirements for power precision load control slicing are: R (t) = {B (t) i ,T (t) i ,C (t) i ,M (t) i |i=1,2}, respectively representing the resource overhead of the service slice and service-aware slice collected at time t.

[0082] The optimal slice resource allocation is adjusted according to the following optimization formula:

[0083] R (opt) =min{B (opt) ,T (opt) ,C (opt) ,M (opt)},in:

[0084]

[0085]

[0086]

[0087]

[0088] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0089] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0090] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0091] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A 5G slicing-based power precise load control communication guarantee system, characterized in that: The system is deployed on the power precise load control business terminal, including a power precise load control business SLA perception module, a power precise load control slice template design and instantiation module, a power precise load control slice deployment and operation module, and a power precise load control slice optimization and coordination module; The power precise load control service SLA perception module is used to determine the network status index according to the service requirements; The power precise load control slice template design and instantiation module is used to match resources according to slice requirements and network status indicators, create end-to-end slices, and instantiate them; The power precise load control slice template design and instantiation module includes a communication service management component, a slice management component and a sub-slice management component; The slice requirements are divided into dispatching-level control system SLA-I and marketing-level control system SLA-II. The two levels of communication are master-slave mode, permanently online, and the error rate of exclusive slice resources is no more than 10 -4 ; The network status indicators include: SLA-I end-to-end delay requirement is less than 650ms, the delay requirement from the control master station to the precise load-controlled service terminal is not less than 50ms, the bandwidth is less than 256kps, and the access density is less than 1000 / 100 square kilometers; SLA-II requires the end-to-end delay requirement to be less than 5min and the bandwidth not more than 48kbps; The communication service management component is used to send the slice requirements and network status indicators of power precise load control as the precise load control service SLA requirements to the slice management component; and to verify the feasibility of the created power precise load control slice; The slice management component and the sub-slice management component are used to match resources according to the SLA requirements of the precise load control service, create end-to-end slices, and instantiate them; the end-to-end slices are divided into two interrelated slices: one is the service slice, which is used for communication between the master station, slave station, and precise load control terminal of the power precise load control service; the other is the service perception slice, which is used to transmit the status information and SLA information of the power precise load control operation; The power precise load control slice deployment and operation module is used to deploy the instantiated slices to the power 5G infrastructure for operation; The power precise load control slice optimization coordination module is used to optimize and adjust the virtualized resources and network parameters deployed in the slices according to the precise load control strategy by real-time monitoring of the service support capability of network resources to ensure SLA requirements; Among them, optimization and adjustment are carried out according to the following methods: R (opt) =min{B (opt) ,T (opt) ,C (opt) ,M (opt) }, Among them, R (opt) is the optimal slice resource allocation, B (opt) ,T (opt) ,C (opt) ,M (opt) are respectively the optimal bandwidth, optimal delay, optimal reliability index and optimal other requirements, B (t) i , T (t) i , C (t) i 、M (t) i are the slice resource requirements collected at the current time t, i=1 represents the service slice, i=2 represents the service-aware slice, B (0) i , T (0) i , C (0) i 、M (0) i They are the slice resource requirements specified in the power precise load control business slice template.

2. According to claim 1, a 5G slicing-based power precise load control communication guarantee system is characterized in that: The business requirements include any of the following: In the early stages of a power grid fault, the frequency drops rapidly, the power flow in the trunk channel exceeds the limit, the power of the inter-provincial interconnection lines is over-utilized, and the power grid's rotating reserve is insufficient.

3. According to claim 1, a 5G slicing-based power precise load control communication guarantee system is characterized in that: The network status indicators include: Service delay, service working cycle, service bandwidth, reliability indicators, data flow and communication indicators.

4. A method for ensuring precise power load control communication based on 5G slicing, characterized in that: The power precise load control communication guarantee system based on 5G slicing according to any one of claims 1 to 3 is implemented, and the method includes: The slice requirements and network status indicators of precise power load control are used as the SLA requirements of precise load control services; the slice requirements are divided into dispatching-level control system SLA-I and marketing-level control system SLA-II. The two levels of communication are master-slave mode, permanently online, and the bit error rate of exclusive slice resources is no more than 10 -4 ; The network status indicators include: SLA-I end-to-end delay requirement is less than 650ms, the delay requirement from the control master station to the precise load-controlled service terminal is not less than 50ms, the bandwidth is less than 256kps, and the access density is less than 1000 / 100 square kilometers; SLA-II requires the end-to-end delay requirement to be less than 5min and the bandwidth not more than 48kbps; Match resources according to the precise load control service SLA requirements, create end-to-end slices, and instantiate them; the end-to-end slices include service slices and service-aware slices; Deploy instantiated slices to run on the power 5G infrastructure; Optimize and adjust the virtualized resources and network parameters of slice deployment to ensure SLA requirements. The optimization adjustment method is: R (opt) =min{B (opt) ,T (opt) ,C (opt) ,M (opt) }, Among them, R (opt) is the optimal slice resource allocation, B (opt) ,T (opt) ,C (opt) ,M (opt) are respectively the optimal bandwidth, optimal delay, optimal reliability index and optimal other requirements, B (t) i , T (t) i , C (t) i 、M (t) i are the slice resource requirements collected at the current time t, i=1 represents the service slice, i=2 represents the service-aware slice, B (0) i , T (0) i , C (0) i 、M (0) i They are the slice resource requirements specified in the power precise load control business slice template.

5. According to claim 4, a method for ensuring precise power load control communication based on 5G slicing is characterized in that: The resource matching according to the precise load control service SLA requirements includes: Obtain the load perception data uploaded by the sensor and send instructions to the slice management system deployed in the precise load control business terminal to configure slice resources and expand or reduce resources. If the current network resources are greater than the slice SLA requirements, the slice management system reduces the resource configuration of the slice; If the current network resources are less than the slice SLA requirements, the slice management system increases the resource configuration of the slice.

6. According to the method for ensuring precise power load control communication based on 5G slicing according to claim 4, it is characterized in that: The operation mode is a virtualization-based SDN / NFV mode.

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