CN114679389A - Electric power accurate load control communication guarantee system and method based on 5G slice - Google Patents
Electric power accurate load control communication guarantee system and method based on 5G slice Download PDFInfo
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Abstract
The invention discloses a system and a method for guaranteeing power precise negative control communication based on 5G slices. The system comprises an electric power precise load control service SLA sensing module, a network state index determining module and a service management module, wherein the electric power precise load control service SLA sensing module determines a network state index according to service requirements; the electric power precise load control slice template designing and instantiating module carries out resource matching according to slice requirements, establishes an end-to-end slice template and instantiates the slice template; the power precise negative control slice deployment and operation module deploys the instantiated slices to a power 5G infrastructure for operation; the power precise load control slice optimization coordination module optimizes and adjusts the virtualized resources and network parameters of slice deployment. The invention can improve the support and guarantee capability of the electric power 5G on the precise load control service and the uRRLC electric power service with low time delay, high reliability and high safety.
Description
Technical Field
The invention relates to the technical field of 5G power communication, in particular to a power precise load control communication guarantee system and method based on 5G slices.
Background
The development of 5G has a great promoting effect on the deep integration of the power information communication technology and the power service, so that the customization requirements of power users on network functions, service flexibility, expansibility, controllability and the like are met.
The precise load control system is a system protection network which takes interruptible loads as specific control objects. When the power grid needs, interruptible loads are accurately matched according to the control quantity and are rapidly controlled in batches. The communication objects of the accurate load control communication system comprise an access layer power user distribution room shunt switch, a metering device and all levels of upper-link convergence sites of a backbone convergence layer. The method mainly solves the problems of rapid frequency drop at the initial stage of power grid fault, out-of-limit main channel tide, excessive power of inter-provincial connecting lines, insufficient rotating standby of the power grid and the like, and is divided into a millisecond-level control system for realizing rapid load control and a more friendly interactive second-level and minute-level control system according to different control requirements.
The accurate load control system based on the 5G communication network is composed of a service terminal, a demand response terminal, a communication network and a main station system. The service terminal is accessed to the building demand response terminal through the local network, and the demand response terminal is accessed to the demand response system master station through the 5G communication network. The accurate load control system needs to quickly restore the balance of the supply and demand of the large power grid and ensure that the frequency of the power grid is restored to a normal value (50Hz) within about 650 milliseconds after the direct current blocking fault occurs, so the transmission delay of a load cutting instruction communication channel from the main station to the terminal cannot exceed 50 milliseconds. The less the action time delay of the whole group of the accurate load control system is, the faster the power grid fault is recovered. The existing negative control system mostly adopts an optical fiber link for communication, the deployment flexibility is limited, and the negative control application adopting 5G communication is only used as a replacement of a communication means, so that the advantages of 5G in the aspects of resource optimization and service customization can not be fully exerted.
Disclosure of Invention
The invention aims to provide a power accurate negative control communication guarantee system and method based on a 5G slice, so as to improve the support and guarantee capability of power 5G on accurate negative control service and other uRRLC power services with low time delay, high reliability and high safety.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention provides a power accurate negative control communication guarantee system based on 5G slices, which is deployed at a power accurate negative control service terminal and comprises a power accurate negative control service SLA sensing module, a power accurate negative control slice template design and instantiation module, a power accurate negative control slice deployment operation module and a power accurate negative control slice optimization cooperation module;
the electric power accurate load control service SLA sensing module is used for determining a network state index according to service requirements;
the electric power accurate load control slice template design and instantiation module is used for carrying out resource matching according to slice requirements and network state indexes, creating an end-to-end slice and instantiating the end-to-end slice;
the power precise negative control slice deployment and operation module is used for deploying instantiated slices to a power 5G infrastructure for operation;
the power precise load control slice optimization cooperation module is used for monitoring the service supporting capacity of network resources in real time and carrying out optimization adjustment on virtualized resources and network parameters deployed by slices according to a precise load control strategy so as to meet SLA requirements.
Further, the service requirement includes any one of the following:
the method has the advantages of rapid frequency drop at the initial stage of power grid failure, out-of-limit main channel tide, excessive power of inter-provincial connecting lines and insufficient rotating standby of a power grid.
Further, the network status indicator includes:
service time delay, service work period, service bandwidth, reliability index, data flow direction and communication index.
Further, the power precise load control slice template designing and instantiating module comprises a communication service management component, a slice management component and a sub-slice management component;
the communication service management assembly is used for taking the slicing requirement of accurate negative control of the electric power and the network state index as the SLA requirement of the accurate negative control service and issuing the SLA requirement to the slicing management assembly; performing feasibility verification on the created accurate power negative control slice;
the slice management component and the sub-slice management component are used for carrying out resource matching according to the requirements of the accurate load control service SLA, creating an end-to-end slice and instantiating the end-to-end slice.
Further, the end-to-end slices are divided into two types of slices associated with each other:
one type is a service slice, which is used for communication among the power accurate load control service master station, the slave station and the accurate load control terminal;
And the other type is a service perception slice which is used for transmitting state information and SLA information of power precise negative control operation.
The invention also provides a method for guaranteeing the electric power accurate load control communication based on the 5G slice, which comprises the following steps:
taking the slicing requirement and the network state index of the accurate negative control of the electric power as the SLA requirement of the accurate negative control service;
performing resource matching according to the SLA requirement of the precise load control service, creating an end-to-end slice, and instantiating the end-to-end slice; the end-to-end slices comprise a service slice and a service aware slice;
deploying the instantiated slices to be operated on a power 5G infrastructure;
and optimizing and adjusting the virtualized resources and network parameters of slice deployment to meet the SLA requirements.
Further, in the above-mentioned case,
the slice requirements of the accurate negative control of the electric power are divided into a scheduling level control system SLA-I and a marketing level control system SLA-II, the two levels of communication modes are master-slave modes, the master-slave modes are permanently online, and the error rate of exclusive slice resources is not more than 10-4；
The network status indicators include: the SLA-I end-to-end delay requirement is less than 650ms, the delay requirement from the control master station to the accurate negative control service terminal is not less than 50ms, the bandwidth is less than 256kps, and the access density is less than 1000 per hundred square kilometers;
SLA-II requires that the end-to-end delay requirement be less than 5min and the bandwidth not exceed 48 kbps.
In a further aspect of the present invention,
the resource matching according to the SLA requirement of the precise load control service comprises the following steps:
acquiring load sensing data uploaded by a sensor, sending an instruction to a slice management system deployed at an accurate load control service terminal to carry out slice resource allocation, carrying out resource expansion or reduction,
if the current network resource is larger than the slice SLA requirement, the slice management system reduces the resource allocation of the slice;
if the current network resources are less than the slice SLA requirements, the slice management system increases the resource allocation of the slice.
Further, the operation mode is a virtualization-based SDN/NFV mode.
Further, the optimizing and adjusting the virtualized resources and the network parameters for slice deployment includes:
the optimal slice resource allocation is optimized and adjusted according to the following modes:
R(opt)＝min{B(opt),T(opt),C(opt),M(opt)}，
wherein R is(opt)For optimal slice resource allocation, B(opt),T(opt),C(opt),M(opt)Respectively, an optimal bandwidth, an optimal time delay, an optimal reliability index and optimal remaining requirements, B(t) i、T(t) i、C(t) i、M(t) iRespectively representing the slice resource requirements acquired at the current time t, wherein i is 1 to represent a service slice, i is 2 to represent a service perception slice, and B(0) i、T(0) i、C(0) i、M(0) iThe requirements of slice resources specified in the electric power precise load control service slice template are respectively met.
The invention achieves the following beneficial effects:
The invention can improve the support and guarantee capability of the electric power 5G on the precise load control service and other low-delay, high-reliability and high-safety uRRLC electric power services.
Drawings
Fig. 1 is a power precise load control service topology based on a 5G slice;
fig. 2 is a flow of operation and optimization of an accurate load control service slice.
Detailed Description
The invention is further described below. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
An embodiment of the invention provides a power accurate negative control communication guarantee system based on a 5G slice, which is deployed in a power accurate negative control service terminal and comprises a power accurate negative control service SLA sensing module, a power accurate negative control slice template design and instantiation module, a power accurate negative control slice deployment operation module and a power accurate negative control slice optimization cooperation module.
In this embodiment, the power accurate load control service SLA sensing module is configured to determine a network state index according to a service requirement. Wherein, the service requirement includes: the method has the advantages of rapid frequency drop at the initial stage of power grid fault, out-of-limit main channel tide, power excess of inter-provincial connecting lines and insufficient rotation standby of the power grid. The network status index requirements are shown in table 1 below:
TABLE 1 network status index
In this embodiment, the power precision negative control slice template design and instantiation module is implemented by three components, namely Communication Service Management (CSMF), slice management (NSMF) and sub-slice management (NSSMF). The CSMF is used for taking the slice requirement and the communication index of the accurate negative control of the power as the SLA requirement of the accurate negative control service and issuing the SLA requirement to the NSMF. And the NSMF and the NSSMF are used for performing resource matching according to SLA requirements of the SLA accurate load control service, creating an end-to-end slice template and instantiating the template. And the CSMF is used for performing feasibility verification on the created power accurate negative control slice.
In the embodiment, the slice template is divided into two types of slices which are related to each other, wherein one type of the slice template is a service slice and is responsible for communication among the power accurate load control service master station, the slave station and the accurate load control terminal; the other type is a service perception slice which is responsible for transmitting state information and SLA guarantee information of accurate load control operation of electric power.
It should be noted that the slice template is generic and can be instantiated into different types by parameter configuration.
In this embodiment, the power precise load control slice deployment and operation module is used to deploy the instantiated slice to a power 5G infrastructure for operation.
As a preferred embodiment, the operation mode in this embodiment is an SDN/NFV mode based on virtualization, and by sharing infrastructure hardware resources, the wireless side of the accurate negative control system selects an appropriate access and mobility management function (AMF), and the instantiated AMF selects an appropriate Session Management Function (SMF) and user function interface (UPF) according to the accurate negative control service, and selects a form of an exclusive Network Function (NF), thereby implementing security isolation from other service slices.
In this embodiment, the power precise load control slice optimization coordination module is configured to monitor service support capacity of network resources in real time, perform optimization adjustment on virtualized resources and network parameters deployed in a slice according to a precise load control strategy, obtain an optimization direction, automatically perform regional function improvement response, and guarantee service SLA requirements. The specific precise negative control strategy is as follows:
the slice resource set allocated to the power accurate load control service by the 5G network is set as follows: and R ═ B, T, C, M, where B is bandwidth, T is latency, C is reliability, and M is definable other resource requirements. The resource requirements specified in the electric power precise load control service slice template are as follows:
the resource demand that current accurate burden accuse section of electric power needs does: r(t)＝{B(t) i,T(t) i,C(t) i,M(t) iAnd i is 1 and 2, which respectively represent the resource overhead of the service slice and the service perception slice acquired at the time t.
The optimal slice resource allocation is adjusted according to the following optimization formula:
R(opt)＝min{B(opt),T(opt),C(opt),M(opt)}, wherein:
another embodiment of the present invention provides a method for guaranteeing accurate negative control communication of electric power based on a 5G slice, including:
taking the slicing requirement and the communication index of the accurate negative control of the electric power as the SLA requirement of the accurate negative control service;
performing resource matching according to the requirements of the accurate load control service SLA, creating an end-to-end slice template, and instantiating the end-to-end slice template;
Deploying the instantiated slices to be operated on a power 5G infrastructure;
and optimizing and adjusting the virtualized resources and network parameters of slice deployment, and improving communication response.
It should be noted that, in this embodiment, the accurate negative control method is implemented based on the topology structure shown in fig. 1, in the topology structure, a service master station is connected to a 5G network through a power private network (optical fiber), an accurate negative control service terminal is accessed to the 5G network, and a sensor uploads load sensing data to the accurate negative control service terminal through an RS458 field bus protocol. And the accurate load control service terminal bears the accurate load control communication guarantee service of the electric power.
As a preferred embodiment, the slicing requirements and communication metrics include:
according to different control requirements, the system is divided into a scheduling level control system SLA-I and a marketing level control system SLA-II, the two levels of communication modes are master-slave modes, the communication modes are permanent online, the error rate of exclusive slice resources is not more than 10-4High reliability of communicationAt a rate of 99.999%. The SLA-I end-to-end time delay requirement is less than 650ms, the time delay requirement from the control master station to the terminal is not less than 50ms, the bandwidth is less than 256kps, and the access density is less than 1000 per hundred square kilometers; SLA-II requires that the end-to-end delay requirement be less than 5min and the bandwidth not exceed 48 kbps.
As a preferred embodiment, resource matching is performed according to the requirements of the accurate negative control service SLA, which specifically includes:
the accurate load control service terminal acquires load sensing data uploaded by the sensor, sends an instruction to the slice management system for slice resource allocation and resource expansion or reduction,
(1) if the current network resource is larger than the slice SLA requirement, the slice management system reduces the resource allocation of the slice;
(2) if the current network resources are less than the slice SLA requirements, the slice management system increases the resource allocation of the slices.
It should be noted that the slice management system may also be deployed at the accurate load control service terminal.
As a preferred embodiment, according to the network resource and power accurate negative control communication SLA state, optimizing and adjusting virtualized resources and network parameters deployed by a slice, specifically as follows:
the slice resource set allocated to the power accurate load control service by the 5G network is set as follows: and R ═ B, T, C, M, where B is bandwidth, T is latency, C is reliability, and M is definable other resource requirements. The resource requirements specified in the electric power precise load control service slice template are as follows:
the resource demand that current accurate burden accuse section of electric power needs does: r (t)＝{B(t) i,T(t) i,C(t) i,M(t) iAnd | i ═ 1,2}, which respectively represent the resource overhead of the traffic slice acquired at the time t and the traffic sensing slice.
The optimal slice resource allocation is adjusted according to the following optimization formula:
R(opt)＝min{B(opt),T(opt),C(opt),M(opt)}, wherein:
as will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. A power accurate negative control communication guarantee system based on 5G slices is characterized in that the system is deployed at a power accurate negative control service terminal and comprises a power accurate negative control service SLA sensing module, a power accurate negative control slice template design and instantiation module, a power accurate negative control slice deployment operation module and a power accurate negative control slice optimization coordination module;
the power precise load control service SLA sensing module is used for determining a network state index according to service requirements;
the electric power precise load control slice template design and instantiation module is used for carrying out resource matching according to slice requirements and network state indexes, creating an end-to-end slice and instantiating the end-to-end slice;
the power precise negative control slice deployment and operation module is used for deploying instantiated slices to a power 5G infrastructure for operation;
the electric power accurate load control slice optimization cooperation module is used for monitoring the service supporting capacity of network resources in real time and carrying out optimization adjustment on the virtualized resources and the network parameters deployed by the slices according to an accurate load control strategy so as to meet the SLA requirements.
2. The system for guaranteeing power accurate load control communication based on 5G slice according to claim 1, wherein the service requirement includes any one of the following:
The method has the advantages of rapid frequency drop at the initial stage of power grid failure, out-of-limit main channel tide, excessive power of inter-provincial connecting lines and insufficient rotating standby of a power grid.
3. The system according to claim 1, wherein the network status indicators include:
service time delay, service work period, service bandwidth, reliability index, data flow direction and communication index.
4. The system for ensuring power accurate negative control communication based on 5G slices according to claim 1, wherein the power accurate negative control slice template design and instantiation module comprises a communication service management component, a slice management component and a sub-slice management component;
the communication service management assembly is used for taking the slicing requirement of accurate negative control of the electric power and the network state index as the SLA requirement of the accurate negative control service and issuing the SLA requirement to the slicing management assembly; performing feasibility verification on the created accurate power negative control slice;
the slice management component and the sub-slice management component are used for carrying out resource matching according to the requirements of the accurate load control service SLA, creating an end-to-end slice and instantiating the end-to-end slice.
5. The system according to claim 4, wherein the end-to-end slices are divided into two types of slices related to each other:
One type is a service slice which is used for communication among the electric power precise negative control service master station, the slave station and the precise negative control terminal;
and the other type is a service perception slice which is used for transmitting state information and SLA information of power precise negative control operation.
6. The method for guaranteeing accurate load control communication of electric power based on 5G slices is characterized by comprising the following steps:
taking the slicing requirement and the network state index of the accurate load control of the electric power as the requirements of an accurate load control service SLA;
performing resource matching according to the requirements of the accurate load control service SLA, creating an end-to-end slice, and instantiating the end-to-end slice; the end-to-end slices comprise service slices and service aware slices;
deploying the instantiated slices to run on a power 5G infrastructure;
and optimizing and adjusting the virtualized resources and network parameters of slice deployment to meet the SLA requirements.
7. The method for guaranteeing power accurate negative control communication based on 5G slice according to claim 6,
the slice requirements of the accurate negative control of the electric power are divided into a scheduling level control system SLA-I and a marketing level control system SLA-II, the two levels of communication modes are master-slave modes, the master-slave modes are permanently online, and the error rate of exclusive slice resources is not more than 10-4；
The network status indicators include: the SLA-I end-to-end delay requirement is less than 650ms, the delay requirement from the control master station to the accurate negative control service terminal is not less than 50ms, the bandwidth is less than 256kps, and the access density is less than 1000 per hundred square kilometers;
SLA-II requires that the end-to-end delay requirement be less than 5min and the bandwidth not exceed 48 kbps.
8. The method for ensuring power precise negative control communication based on 5G slices according to claim 6,
the resource matching according to the SLA requirement of the precise load control service comprises the following steps:
acquiring load sensing data uploaded by a sensor, sending an instruction to a slice management system deployed at an accurate load control service terminal to carry out slice resource allocation, carrying out resource expansion or reduction,
if the current network resource is larger than the slice SLA requirement, the slice management system reduces the slice resource allocation;
if the current network resources are less than the slice SLA requirements, the slice management system increases the resource allocation of the slices.
9. The method for ensuring power precise negative control communication based on 5G slices according to claim 6, wherein the operation mode is a virtualization-based SDN/NFV mode.
10. The method for ensuring power accurate load control communication based on 5G slice according to claim 6, wherein the optimizing and adjusting virtualized resources and network parameters for slice deployment comprises:
the optimal slice resource allocation is optimized and adjusted according to the following modes:
R(opt)＝min{B(opt),T(opt),C(opt),M(opt)}，
Wherein R is(opt)For optimal slice resource allocation, B(opt),T(opt),C(opt),M(opt)Respectively, an optimal bandwidth, an optimal time delay, an optimal reliability index and optimal remaining requirements, B(t) i、T(t) i、C(t) i、M(t) iRespectively representing the slice resource requirements acquired at the current time t, wherein i is 1 to represent a service slice, i is 2 to represent a service perception slice, and B(0) i、T(0) i、C(0) i、M(0) iThe requirements of slice resources specified in the electric power precise load control service slice template are respectively met.
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