Power system and method for constructing a power system

Abstract

The present disclosure relates to a power system and a power system construction method. The power system comprises a hybrid communication network; wherein the hybrid communication network comprises a virtual private network area, a hybrid private network area and an independent private network area; the virtual private network area adopts a virtual private network networking scheme, the virtual private network networking scheme comprising at least one of a first wireless network, a first bearer network and a first core network; the hybrid private network area adopts a hybrid private network networking scheme, the hybrid private network networking scheme comprising at least one of a second wireless network, a second bearer network and a second core network; and the independent private network area adopts an independent private network networking scheme, the independent private network networking scheme comprising at least one of a third wireless network, a third bearer network and a third core network. In this way, the power supply demand of the user power system can be met, and the communication network construction meeting the user data security and network transmission delay can be realized, thereby facilitating the realization of the power system construction meeting the user.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of power systems, and particularly relates to a power system and a power system construction method. BACKGROUND

[0002] A new power system develops into a complex coupled network system composed of a physical power system and a communication information system, forming a power information physical system (Cyber Physical System, CPS) with high information-physical coupling. With the access of large-scale multi-mode terminals, the number of terminal services increases significantly, and the service types are diversified, which makes the wide-area measurement and protection control applications, the distributed energy on the distribution network side, the micro-grid, the load side management and the further expansion of the two-way interaction between users and the power grid. The communication requirements of the power system are higher and higher. SUMMARY

[0003] Therefore, the embodiments of the present disclosure expect to provide a power system and a power system construction method.

[0004] The technical solution of the present disclosure is implemented as follows:

[0005] In a first aspect, the present disclosure provides a power system.

[0006] The power system provided by the embodiments of the present disclosure comprises:

[0007] a hybrid communication network; wherein the hybrid communication network comprises:

[0008] a virtual private network area, a hybrid private network area and an independent private network area;

[0009] The virtual private network area adopts a virtual private network networking scheme, and the virtual private network networking scheme comprises at least one of a first wireless network, a first bearer network and a first core network;

[0010] The hybrid private network area adopts a hybrid private network networking scheme, and the hybrid private network networking scheme comprises at least one of a second wireless network, a second bearer network and a second core network;

[0011] The independent private network area adopts an independent private network networking scheme, and the independent private network networking scheme comprises at least one of a third wireless network, a third bearer network and a third core network;

[0012] The data security of the third wireless network is greater than the data security of the second wireless network, and the data security of the second wireless network is greater than the data security of the first wireless network;

[0013] The data security of the third bearer network is greater than the data security of the second bearer network, and the data security of the second bearer network is greater than the data security of the first bearer network;

[0014] The data security of the third core network is greater than that of the second core network, and the data security of the second core network is greater than that of the first core network;

[0015] The network transmission delay length of the third wireless network is greater than that of the second wireless network, and the network transmission delay length of the second wireless network is greater than that of the first wireless network;

[0016] The network transmission delay length of the third bearer network is greater than that of the second bearer network, and the network transmission delay length of the second bearer network is greater than that of the first bearer network;

[0017] The network transmission delay length of the third core network is greater than that of the second core network, and the network transmission delay length of the second core network is greater than that of the first core network.

[0018] In some embodiments, the first wireless network adopts a DNN slicing architecture; wherein the DNN slicing architecture includes a first management information area slice and a first production control area slice; the first management information area slice adopts 5QI priority guarantee on the wireless side and VPN isolation on the transmission side;

[0019] The first bearer network adopts VPN isolation or time slot isolation;

[0020] The first core network adopts an operator core network to network based on logical slices.

[0021] In some embodiments, the second wireless network includes a second management information area slice and a second production control area slice; the second management information area slice adopts 5QI priority guarantee on the wireless side and VPN isolation on the transmission side;

[0022] The second production control area slice adopts RB resources on the wireless side, and distinguishes the priority of different services through 5QI priority inside the RB resource pool, and adopts FlexE hard pipe guarantee on the transmission side, and sets VPN isolation inside the hard pipe;

[0023] The second bearer network adopts VPN isolation or time slot isolation;

[0024] The second core network adopts power UPF deployed in a substation, a city company, and a provincial company.

[0025] In some embodiments, the third wireless network adopts an operator spectrum, a power dedicated base station, a UR_U dedicated base station, and a 5G spectrum dedicated base station;

[0026] The third bearer network is a self-built bearer network.

[0027] The third core network is a self-built core network, and the third core network is configured to interface with an operator network.

[0028] In some embodiments, the hybrid communication network further comprises:

[0029] An independent private network; the independent private network is a local area private network that builds an independent base station and uses a power private network to allocate an independent frequency band; wherein, at the core network side of the independent private network, the control plane and the user plane are completely isolated from the public network, and all service information and control information are locally stored;

[0030] The private network traffic of the independent private network is accessed to the independent base station through the air interface of the independent frequency band, and the internal application traffic is directly flowed to the application platform carried by the private cloud or the edge cloud (MEC) in the park through the local UPF shunting;

[0031] The signaling traffic of the independent private network is processed through the core network of the independent private network.

[0032] In some embodiments, the hybrid communication network further comprises:

[0033] A non-independent private network; the non-independent private network comprises a partially shared private network;

[0034] The partially shared private network is configured to share part of the core network elements;

[0035] The independent private network and the non-independent private network share the core network control plane;

[0036] The private network traffic of the non-independent private network is accessed to the shared base station through the air interface of the independent frequency band in the park; the internal application traffic of the non-independent private network is flowed to the application platform carried by the private cloud or the edge cloud (MEC) in the park through the local UPF shunting; and the signaling traffic of the non-independent private network is processed based on the user's demand for security isolation through the public network core network.

[0037] In a second aspect, the disclosure provides a power system construction method, comprising:

[0038] Obtaining the power supply demand of the user power system; wherein the power supply demand at least includes data security, network transmission time delay length;

[0039] Based on the power supply demand of the user power system, a hybrid communication network is constructed; wherein the hybrid communication network at least comprises one of the following:

[0040] A virtual private network area, a hybrid private network area and an independent private network area;

[0041] The virtual private network area adopts a virtual private network networking scheme, and the virtual private network networking scheme includes at least one of a first wireless network, a first bearer network and a first core network.

[0042] The hybrid private network area adopts a hybrid private network networking scheme, and the hybrid private network networking scheme includes at least one of a second wireless network, a second bearer network and a second core network.

[0043] The independent private network area adopts an independent private network networking scheme, and the independent private network networking scheme includes at least one of a third wireless network, a third bearer network and a third core network.

[0044] The data security of the third wireless network is greater than that of the second wireless network, and the data security of the second wireless network is greater than that of the first wireless network.

[0045] The data security of the third bearer network is greater than that of the second bearer network, and the data security of the second bearer network is greater than that of the first bearer network.

[0046] The data security of the third core network is greater than that of the second core network, and the data security of the second core network is greater than that of the first core network.

[0047] The network transmission delay length of the third wireless network is greater than that of the second wireless network, and the network transmission delay length of the second wireless network is greater than that of the first wireless network.

[0048] The network transmission delay length of the third bearer network is greater than that of the second bearer network, and the network transmission delay length of the second bearer network is greater than that of the first bearer network.

[0049] The network transmission delay length of the third core network is greater than that of the second core network, and the network transmission delay length of the second core network is greater than that of the first core network.

[0050] In some embodiments, the first wireless network adopts a DNN slicing architecture; wherein the DNN slicing architecture includes a first management information area slice and a first production control area slice; the first management information area slice adopts 5QI priority guarantee on the wireless side and adopts VPN isolation on the transmission side.

[0051] The first bearer network adopts VPN isolation or time slot isolation.

[0052] The first core network adopts an operator core network to network based on a logical slice.

[0053] In some embodiments, the second wireless network comprises a second management information area slice and a second production control area slice; the second management information area slice adopts 5QI priority guarantee on the wireless side and VPN isolation on the transmission side;

[0054] The second production control area slice adopts RB resources on the wireless side, distinguishes the priority of different services through 5QI priority inside the RB resource pool, adopts FlexE hard pipe guarantee on the transmission side, and is provided with VPN isolation inside the hard pipe;

[0055] The second bearer network adopts VPN isolation or time slot isolation;

[0056] The second core network adopts power UPF deployed in a substation, a city company, and a provincial company.

[0057] In some embodiments, the third wireless network adopts an operator spectrum, a power dedicated base station, a UR_U dedicated base station, and a 5G spectrum dedicated base station;

[0058] The third bearer network is a self-built bearer network;

[0059] The third core network is a self-built core network, and the third core network is used for interfacing with an operator network.

[0060] The power system according to the embodiment of the present disclosure comprises a hybrid communication network; wherein the hybrid communication network comprises a virtual private network area, a hybrid private network area and an independent private network area; the virtual private network area adopts a virtual private network networking scheme, the virtual private network networking scheme comprises at least one of a first wireless network, a first bearing network and a first core network; the hybrid private network area adopts a hybrid private network networking scheme, the hybrid private network networking scheme comprises at least one of a second wireless network, a second bearing network and a second core network; the independent private network area adopts an independent private network networking scheme, the independent private network networking scheme comprises at least one of a third wireless network, a third bearing network and a third core network; wherein the data security of the third wireless network is greater than the data security of the second wireless network, the data security of the second wireless network is greater than the data security of the first wireless network; the data security of the third bearing network is greater than the data security of the second bearing network, the data security of the second bearing network is greater than the data security of the first bearing network; the data security of the third core network is greater than the data security of the second core network, the data security of the second core network is greater than the data security of the first core network; the network transmission delay length of the third wireless network is greater than the network transmission delay length of the second wireless network, the network transmission delay length of the second wireless network is greater than the network transmission delay length of the first wireless network; the network transmission delay length of the third bearing network is greater than the network transmission delay length of the second bearing network, the network transmission delay length of the second bearing network is greater than the network transmission delay length of the first bearing network; the network transmission delay length of the third core network is greater than the network transmission delay length of the second core network, the network transmission delay length of the second core network is greater than the network transmission delay length of the first core network. In the present application, through the hybrid communication network of the virtual private network area, the hybrid private network area and the independent private network area, the power supply demand of the user power system can be realized, the user data security and the network transmission delay communication network construction can be satisfied, so as to facilitate the realization of the power system construction meeting the user's demand.

[0061] Additional aspects and advantages of the present disclosure will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0062] Figure 1 is a power system structure schematic diagram shown according to an exemplary embodiment;

[0063] Figure 2 is a power system construction method flow chart according to an exemplary embodiment. DETAILED DESCRIPTION

[0064] Embodiments of the present disclosure are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present disclosure, and cannot be understood as a limitation of the present disclosure.

[0065] The new power system develops into a complex coupling network system composed of a physical power system and a communication information system, forming a power information physical system (Cyber Physical System, CPS) with high information physical coupling. With the access of large-scale multi-mode terminals, the number of terminal services increases significantly, and the types of services are diversified, which makes the wide-area measurement and protection control applications, the further expansion of the distributed energy on the distribution network side, the micro-grid, the load side management and the two-way interaction between users and the power grid. The communication requirements of the power system are getting higher and higher.

[0066] In view of the above, the present disclosure provides a power system. Figure 1 is a schematic diagram of the structure of the power system according to an exemplary embodiment. As shown in Figure 1 The power system comprises:

[0067] A hybrid communication network; wherein the hybrid communication network comprises:

[0068] A virtual private network area, a hybrid private network area and an independent private network area;

[0069] The virtual private network area adopts a virtual private network networking scheme 01, and the virtual private network networking scheme comprises at least one of a first wireless network, a first bearer network and a first core network;

[0070] The hybrid private network area adopts a hybrid private network networking scheme 02, and the hybrid private network networking scheme comprises at least one of a second wireless network, a second bearer network and a second core network;

[0071] The independent private network area adopts an independent private network networking scheme 03, and the independent private network networking scheme comprises at least one of a third wireless network, a third bearer network and a third core network;

[0072] Wherein, the data security of the third wireless network is greater than the data security of the second wireless network, and the data security of the second wireless network is greater than the data security of the first wireless network;

[0073] The data security of the third bearer network is greater than the data security of the second bearer network, and the data security of the second bearer network is greater than the data security of the first bearer network;

[0074] The data security of the third core network is greater than that of the second core network, and the data security of the second core network is greater than that of the first core network;

[0075] The network transmission delay length of the third wireless network is greater than that of the second wireless network, and the network transmission delay length of the second wireless network is greater than that of the first wireless network;

[0076] The network transmission delay length of the third bearer network is greater than that of the second bearer network, and the network transmission delay length of the second bearer network is greater than that of the first bearer network;

[0077] The network transmission delay length of the third core network is greater than that of the second core network, and the network transmission delay length of the second core network is greater than that of the first core network.

[0078] In an example embodiment, the power system comprises: a hybrid communication network; wherein the hybrid communication network comprises: a virtual private network area, a hybrid private network area, and an independent private network area; the virtual private network area adopts a virtual private network networking scheme, the virtual private network networking scheme comprises at least one of a first wireless network, a first bearer network, and a first core network; the hybrid private network area adopts a hybrid private network networking scheme, the hybrid private network networking scheme comprises at least one of a second wireless network, a second bearer network, and a second core network; the independent private network area adopts an independent private network networking scheme, the independent private network networking scheme comprises at least one of a third wireless network, a third bearer network, and a third core network; wherein the data security of the third wireless network is greater than the data security of the second wireless network, and the data security of the second wireless network is greater than the data security of the first wireless network; the data security of the third bearer network is greater than the data security of the second bearer network, and the data security of the second bearer network is greater than the data security of the first bearer network; the data security of the third core network is greater than the data security of the second core network, and the data security of the second core network is greater than the data security of the first core network; the network transmission delay length of the third wireless network is greater than the network transmission delay length of the second wireless network, and the network transmission delay length of the second wireless network is greater than the network transmission delay length of the first wireless network; the network transmission delay length of the third bearer network is greater than the network transmission delay length of the second bearer network, and the network transmission delay length of the second bearer network is greater than the network transmission delay length of the first bearer network; the network transmission delay length of the third core network is greater than the network transmission delay length of the second core network, and the network transmission delay length of the second core network is greater than the network transmission delay length of the first core network. In this application, through the hybrid communication network of the virtual private network area, the hybrid private network area, and the independent private network area, the power supply demand of the user power system can be met, the user data security and the network transmission delay communication network construction can be met, and the power system construction meeting the user can be realized.

[0079] In some embodiments, the first wireless network adopts a DNN slicing architecture; wherein the DNN slicing architecture comprises a first management information area slice and a first production control area slice; the first management information area slice adopts 5QI priority guarantee on the wireless side and adopts VPN isolation on the transmission side;

[0080] The first bearer network adopts VPN isolation or time slot isolation;

[0081] The first core network adopts an operator core network to network based on a logical slice.

[0082] In an example embodiment, the second wireless network comprises a second management information area slice and a second production control area slice; the second management information area slice adopts 5QI priority guarantee on the wireless side and adopts VPN isolation on the transmission side;

[0083] The second production control measurement area slice uses RB resources on the wireless side, different service priorities are distinguished by 5QI priority inside the RB resource pool, and FlexE hard pipes are used on the transmission side to ensure that VPN isolation is provided inside the hard pipes;

[0084] The second bearer network uses VPN isolation or time slot isolation.

[0085] The second core network uses a power UPF deployed in a substation, a city company, and a provincial company.

[0086] In an exemplary embodiment, the third wireless network uses an operator spectrum, a power dedicated base station, a UR_U dedicated base station, and a 5G spectrum dedicated base station.

[0087] The third bearer network is a self-built bearer network.

[0088] The third core network is a self-built core network, and the third core network is used to interface with an operator network.

[0089] In an exemplary embodiment, terminal security covers end-to-end security authentication, and 5G terminal access security area needs to perform chip-level encryption authentication, including access control and network attack detection. The internal boundary uses a company's dedicated security access platform to realize encrypted transmission of wireless service terminals to network boundaries, terminal legitimacy authentication, and data isolation exchange, and other security functions.

[0090] Channel security mainly involves transmitting power special network data in an operator network to realize mutual isolation of different types of special networks. Among them, physical isolation and other measures can be used between services accessing the production control area and the management information area, and logical isolation and other measures can be used between different services accessing the management information area and different services accessing the production control area. Power slice security can consider access network slicing, bearer network slicing, and core network slicing, including slice management security and slice authorization security, and other technologies. Slice management security covers network slice controller attack prevention and service configuration management face attack prevention, and slice authorization security requires providing slice authentication and authorization mechanisms to prevent unauthorized users from accessing slice resources.

[0091] In terms of access area security, the service system of the production control area uses a wireless communication network, a virtual private network of a power enterprise other data network, or an external public data network when communicating with its terminal in vertical connection, and a security access area should be established. In addition, if the terminal wants to access the management information area, it can access through a dedicated information network security access gateway.

[0092] The devices in the power system, such as PMU, protection terminal, terminal equipment of switching station, etc., are all built-in clocks. However, due to the problems of clock initial value or clock timing accuracy, it is difficult to synchronize these clocks, resulting in time deviation of collected quantities, thereby affecting the correct execution of power business. For example, in the differential protection of distribution network, the unsynchronized protection terminals at both ends of the line will lead to inaccurate calculation of differential current IA-IB at both ends of the line, affecting the accuracy of differential current calculation and protection logic judgment. Therefore, it is necessary to realize the synchronization of all network devices and collected quantities through satellite time service and other technologies. In actual engineering, the synchronization accuracy required by the distribution network differential protection is less than 10 μs, and the synchronization accuracy required by the distribution network PMU is less than 1 μs.

[0093] Therefore, 5G can meet the safety requirements of power grid control business such as differential protection, power distribution automation, demand side response of power load, distributed energy, precise load control, etc.

[0094] In some embodiments, the hybrid communication network further comprises:

[0095] An independent private network; the independent private network is an independent base station constructed in a local park, and uses a power private network to allocate an independent frequency band; wherein, at the core network side of the independent private network, the control plane and the user plane are completely isolated from the public network, and all business information and control information are locally stored;

[0096] The private network traffic of the independent private network accesses the independent base station through the air interface of the independent frequency band, and the internal application traffic is directly flowed to the application platform carried by the private cloud or edge cloud (MEC) in the park through the local UPF shunting;

[0097] The signaling traffic of the independent private network is processed through the core network of the independent private network.

[0098] In the example embodiments,

[0099] The independent private network is mainly for industry users with very high safety requirements. The independent private network is completely independent of the 5G public network, is operated by an SNPN operator, and provides exclusive wireless resources, independent 5G core network, etc. Among them, the independent private network can refer to using independent wireless devices, frequency resources, bearing network and core network, which are completely isolated from the public network wireless network, bearing network and core network. The change of public network business will not affect the data transmission quality of private network, forming a strictly isolated industry private network.

[0100] On the wireless side, the independent private network is an independent base station constructed in a local park, which ensures that the power equipment resources in the private network are not occupied by the public network, allocates an independent frequency band for the power private network, ensures that there is no frequency interference between the power private network and the 5G public network, and the private network data transmission is reliable.

[0101] On the core network side, an independent private network builds an independent private network core network, and the core network control plane and user plane are completely isolated from the public network. Business information and control information are all stored locally and do not leave the power park.

[0102] Private network traffic accesses independent base stations through independent air interfaces of frequency bands. Internal application traffic is distributed through a local UPF and directly flows to an application platform carried by a private cloud or edge cloud (MEC) in the park. Signaling traffic is directly processed through the independent core network of the private network. The architecture of the independent private network reduces transmission latency and ensures that business data, terminal card numbers, and other control information in the park do not leave the park, thereby achieving strict data isolation.

[0103] The independent private network can adopt a customized solution according to the needs of different industry applications, including: seamless coverage of indoor and outdoor base stations, beam management optimization for special scenarios, deployment of large-scale MIMO, provision of differentiated coverage, adjustment of frame structure, and implementation of wireless uplink and downlink resource allocation. In addition, private network users can perform self-service through an operation and maintenance management platform to manage and monitor the quality of all wireless and core network devices.

[0104] Overall, the independent private network resources are completely isolated, public network adjustments do not affect private network business, and the quality of private network business is guaranteed. Internal application data, terminal quantity, location, and all other information do not leave the power park, thereby meeting the most stringent data isolation and security requirements. However, all devices of the independent private network need to be built separately, and the construction and maintenance costs are high due to the consideration of high reliability.

[0105] In some embodiments, the hybrid communication network further includes:

[0106] a non-independent private network; the non-independent private network includes a partially shared private network;

[0107] the partially shared private network is configured to share part of the core network elements;

[0108] wherein the independent private network shares a core network control plane with the non-independent private network.

[0109] Private network traffic of the non-independent private network accesses a shared base station through an air interface of an independent frequency band in the park. Internal application traffic of the non-independent private network is distributed through a locally submerged UPF and flows to an application platform carried by a private cloud or edge cloud (MEC) in the park. Signaling traffic of the non-independent private network is processed through the public network core network based on the user's demand for security isolation.

[0110] In an exemplary embodiment, the network relies on a 5G public network, which is operated by a traditional operator. The non-independent private network includes two forms as follows: a partially shared private network: sharing some core network elements, such as UPF, session management function (SMF), AMF, unified data management function (UDM), and the like, and the private network uses part of the public network frequency of the operator as a dedicated frequency of the private network in the park. The partially shared private network is mainly for power users who have requirements such as no data out of the park and low latency. In the partially shared private network solution, the core network user plane of the private network can be selected to be sunk to the park, or an independent core network is constructed in the park for core network deployment.

[0111] On the wireless side, the partially shared private network shares the hardware facilities of the public and private network base stations in the park, reduces the construction cost, and uses the private network base station to supplement the points in the public network weak coverage or blind area. The operator divides part of the public network frequency as a dedicated frequency band for the user private network in the park, ensures no frequency interference between the private network and the public network, and ensures reliable data transmission of the private network.

[0112] On the core network side, the partially shared private network should be deployed based on the different requirements of industry users for data security isolation.

[0113] On the one hand, the public and private networks can share the core network control plane, and the private network can sink the core network user plane to the local park to meet the needs of industry users for internal application data not to leave the park, reduce the core network construction and maintenance cost, and support terminal roaming outside the park; on the other hand, the private network can deploy an independent core network to ensure that any information of internal applications and terminal card numbers does not leave the park, and meet the needs of higher security isolation.

[0114] The private network traffic accesses the shared base station through the air interface of the independent frequency band in the park, the internal application traffic is distributed through the sunk UPF in the park, and directly flows to the application platform carried by the private cloud or edge cloud (MEC) in the park. The signaling traffic can be processed through the public network core network according to the user's demand for security isolation, or directly through the private network independent core network.

[0115] The private network user can perform rich network operation and maintenance operations through the operation and maintenance platform provided by the operator, self-manage the access permission of the terminal, configure the IP address pool of the terminal, set the differentiated QoS parameters, monitor the network quality, and the like.

[0116] Since an independent frequency is allocated for the partial shared private network in the park, the private network service is transmitted in the independent frequency band, and the public network service will not affect the channel quality of the private network service. In addition, compared with the independent private network, the partial shared private network and the public network shared base station can reduce the network construction cost to a certain extent. However, the specific cost saving is related to the demand of the private network service for network coverage and the coverage of the public network. Once the public network coverage cannot meet the user demand, a private network base station needs to be built to supplement the point. Moreover, it cannot be ignored that the base station sharing will cause the mutual influence of the public network and the private network in terms of coverage, uplink and downlink resource configuration, etc.

[0117] Virtual private network: a virtual private network provided by slicing, QoS and DNN (Date Network Name) customization technology, mainly for power users with relatively low security requirements. Among them, the virtual private network refers to the private network and the public network sharing wireless access equipment, frequency, bearer network and core network, and realizing the virtual private network through the logical isolation of slicing.

[0118] On the wireless side, the public network and the private network share the base station and the frequency, realize the logical isolation and priority scheduling of the public network and the private network spectrum resources through slicing, and reduce the construction cost. On the core network side, the public network and the private network share the core network control plane resource pool, realize different degrees of isolation through slicing, reduce the core network construction cost and maintenance difficulty; the private network user shares the core network user plane pool which is sunk to the user's vicinity, realizes the isolation of the shared user plane resource pool through slicing, and reduces the transmission delay. The private network user traffic accesses the shared base station through the priority scheduling or spectrum reservation based on slicing on the wireless side.

[0119] 1) Application traffic is distributed through the UPF sunk to the user's vicinity, flows to the application platform of the industry user, reduces the transmission delay, and to a certain extent realizes the isolation of business data;

[0120] 2) Signaling traffic is processed through the public network core network resource pool, but the isolation of the private network core network control plane can be realized through slicing technology according to the user's demand for security isolation.

[0121] The user using the virtual private network can subscribe to the slicing service through the slicing management system and the operation and maintenance management platform, manage the access permission of the terminal, set the differential QoS parameter, configure the terminal IP address pool and other business opening and network operation and maintenance operations.

[0122] The virtual private network shares the base station, frequency and core network resources with the public network, and realizes logical isolation through slicing technology, greatly reduces the network construction cost, and is very suitable for wide-area scenarios which need to be deployed in a large range. However, when the network resources are insufficient, resource preemption between the public network and the private network will occur. In addition, the public network may not meet the business demand of various private network users in terms of coverage, uplink and downlink resource configuration, etc. Once the adjustment is made, it may also cause the mutual influence of the public network and the private network.

[0123] 3) Network solution comparison: From the dimensions of data security, network transmission delay, network slicing capability, industry chain maturity, construction and operation difficulty, investment scale and policy and technology feasibility, the network providing capability and advantages and disadvantages of the three network solutions are analyzed.

[0124] The virtual private network solution has advantages in policy feasibility and construction and operation difficulty, the independent private network solution has advantages in data security, network transmission delay and network slicing capability, and the hybrid private network is between the two.

[0125] The present disclosure provides a power system construction method. Figure 2 The power system construction method flow chart shown according to an exemplary embodiment. As shown in Figure 2 The power system construction method comprises the following steps:

[0126] Step 20, obtaining the power supply demand of the user power system; wherein the power supply demand at least includes data security, network transmission delay length;

[0127] Step 21, constructing a hybrid communication network based on the power supply demand of the user power system; wherein the hybrid communication network at least includes one of the following:

[0128] Virtual private network area, hybrid private network area and independent private network area;

[0129] The virtual private network area adopts a virtual private network networking solution, and the virtual private network networking solution includes at least one of a first wireless network, a first bearer network and a first core network;

[0130] The hybrid private network area adopts a hybrid private network networking solution, and the hybrid private network networking solution includes at least one of a second wireless network, a second bearer network and a second core network;

[0131] The independent private network area adopts an independent private network networking solution, and the independent private network networking solution includes at least one of a third wireless network, a third bearer network and a third core network;

[0132] Among them, the data security of the third wireless network is greater than that of the second wireless network, and the data security of the second wireless network is greater than that of the first wireless network;

[0133] The data security of the third bearer network is greater than that of the second bearer network, and the data security of the second bearer network is greater than that of the first bearer network;

[0134] The data security of the third core network is greater than that of the second core network, and the data security of the second core network is greater than that of the first core network.

[0135] The network transmission delay length of the third wireless network is greater than that of the second wireless network, and the network transmission delay length of the second wireless network is greater than that of the first wireless network.

[0136] The network transmission delay length of the third bearer network is greater than that of the second bearer network, and the network transmission delay length of the second bearer network is greater than that of the first bearer network.

[0137] The network transmission delay length of the third core network is greater than that of the second core network, and the network transmission delay length of the second core network is greater than that of the first core network.

[0138] In an exemplary embodiment, a hybrid communication network includes a virtual private network area, a hybrid private network area, and an independent private network area; the virtual private network area adopts a virtual private network networking scheme, the virtual private network networking scheme includes at least one of a first wireless network, a first bearer network, and a first core network; the hybrid private network area adopts a hybrid private network networking scheme, the hybrid private network networking scheme includes at least one of a second wireless network, a second bearer network, and a second core network; the independent private network area adopts an independent private network networking scheme, the independent private network networking scheme includes at least one of a third wireless network, a third bearer network, and a third core network; wherein the data security of the third wireless network is greater than that of the second wireless network, the data security of the second wireless network is greater than that of the first wireless network; the data security of the third bearer network is greater than that of the second bearer network, the data security of the second bearer network is greater than that of the first bearer network; the data security of the third core network is greater than that of the second core network, the data security of the second core network is greater than that of the first core network; the network transmission delay length of the third wireless network is greater than that of the second wireless network, the network transmission delay length of the second wireless network is greater than that of the first wireless network; the network transmission delay length of the third bearer network is greater than that of the second bearer network, the network transmission delay length of the second bearer network is greater than that of the first bearer network; the network transmission delay length of the third core network is greater than that of the second core network, the network transmission delay length of the second core network is greater than that of the first core network. In this application, through the hybrid communication network of the virtual private network area, the hybrid private network area, and the independent private network area, the user data security and network transmission delay communication network construction can be realized according to the power supply demand of the user power system, thereby facilitating the realization of the power system construction meeting the user's demand.

[0139] In some embodiments, the first wireless network adopts a DNN slice architecture; wherein the DNN slice architecture comprises a first management information area slice and a first production control area slice; the first management information area slice adopts 5QI priority guarantee on the wireless side and VPN isolation on the transmission side;

[0140] The first bearer network adopts VPN isolation or time slot isolation;

[0141] The first core network adopts an operator core network to network based on a logical slice.

[0142] In an exemplary embodiment, the second wireless network comprises a second management information area slice and a second production control area slice; the second management information area slice adopts 5QI priority guarantee on the wireless side and VPN isolation on the transmission side;

[0143] The second production control measurement area slice adopts RB resources on the wireless side, and distinguishes the priority of different services through 5QI priority inside the RB resource pool, adopts FlexE hard pipe guarantee on the transmission side, and is provided with VPN isolation inside the hard pipe;

[0144] The second bearer network adopts VPN isolation or time slot isolation;

[0145] The second core network adopts a power UPF deployed in a substation, a city company, and a provincial company.

[0146] In an exemplary embodiment, the third wireless network adopts an operator spectrum, a power dedicated base station, a UR_U dedicated base station, and a 5G spectrum dedicated base station;

[0147] The third bearer network is a self-built bearer network;

[0148] The third core network is a self-built core network, and the third core network is used for interfacing with an operator network.

[0149] In an exemplary embodiment, terminal security covers end-to-end security authentication, and 5G terminal access to a security area needs to be subjected to chip-level encryption authentication, including access control and network attack detection. An internal boundary adopts a company's dedicated security access platform to realize encrypted transmission of a wireless service terminal to a network boundary, terminal legitimacy authentication, and data isolation exchange and other security functions.

[0150] Channel security mainly involves the transmission of power special network data in the operator network to realize the isolation of special networks between different types of services. Among them, physical isolation and other measures can be used between services accessing the production control area and the management information area, and logical isolation and other measures can be used between different services accessing the management information area and between different services in the production control area. Power slice security can consider access network slices, bearer network slices, and core network slices, including slice management security and slice authorization security technologies. Slice management security covers network slice controller attack prevention and service configuration management face attack prevention, while slice authorization security requires providing slice authentication and authorization mechanisms to prevent unauthorized users from accessing slice resources.

[0151] In terms of access area security, the service system of the production control area should establish a secure access area when using a virtual private network of a wireless communication network, other data networks of a power enterprise, or an external public data network for communication in the vertical connection with its terminal. In addition, if the terminal wants to access the management information area, it can do so through a dedicated information network security access gateway.

[0152] Devices in the power system, such as PMUs, protection terminals, and terminal equipment at switching stations, all have built-in clocks. However, due to issues such as clock initial values or clock timing accuracy, it is difficult to synchronize these clocks, leading to time deviations in collected quantities and affecting the correct execution of power services. For example, in distribution network differential protection, if the protection terminals at both ends of the line are not synchronized, it will result in inaccurate calculation of the differential current IA-IB at both ends of the line, affecting the accuracy of differential current calculation and protection logic judgment. Therefore, it is necessary to synchronize the time of all network devices and collected quantities through satellite time service and other technologies. In practical engineering, the time synchronization accuracy required by distribution network differential protection is less than 10 μs, while the time synchronization accuracy required by distribution network PMUs is less than 1 μs.

[0153] Therefore, 5G can meet the security requirements of power grid control services such as differential protection, distribution automation, demand-side response of power load, distributed energy, and precise load control.

[0154] In some embodiments, the hybrid communication network further comprises:

[0155] An independent special network; the independent special network is an independent base station constructed in a local park, and uses a power special network to allocate an independent frequency band; wherein, at the core network side of the independent special network, the control plane and the user plane are completely isolated from the public network, and all business information and control information are locally stored;

[0156] The special network traffic of the independent special network accesses the independent base station through the air interface of the independent frequency band, and the internal application traffic is directly forwarded to the application platform carried by the private cloud or edge cloud (MEC) in the park through the local UPF;

[0157] The signaling traffic of the independent private network is processed by a core network of the independent private network.

[0158] In an example embodiment,

[0159] The independent private network is mainly for industry users with very high security requirements. The independent private network is completely independent of the 5G public network, is operated by an SNPN operator, and provides exclusive wireless resources, an independent 5G core network, and the like. Among them, the independent private network can refer to using independent wireless devices, frequency resources, a bearer network, and a core network, being completely isolated from the public network wireless network, the bearer network, and the core network, and the public network business changes not affecting the data transmission quality of the private network at all, forming a strictly isolated industry private network.

[0160] On the wireless side, the independent private network constructs independent base stations for local parks, ensures that power equipment resources in the private network are not occupied by the public network, allocates independent frequency bands for the power private network, ensures that the power private network and the 5G public network have no frequency interference, and the private network data transmission is reliable.

[0161] On the core network side, the independent private network constructs an independent private network core network, the core network control plane and user plane are completely isolated from the public network, and all business information and control information are stored locally and do not leave the power park.

[0162] The private network traffic accesses the independent base station through the independent frequency band air interface, the internal application traffic is distributed through the local UPF, and directly flows to the application platform carried by the private cloud or edge cloud (MEC) in the park; the signaling traffic is directly processed by the independent core network of the private network. The architecture of the independent private network reduces the transmission delay, ensures that the park internal business data, terminal card number, and other control information do not leave the park, and realizes strict data isolation.

[0163] The independent private network can adopt a customized solution according to the needs of different industry applications, including: seamless coverage of indoor and outdoor base stations, beam management optimization for special scenarios, deployment of large-scale MIMO, provision of differentiated coverage, adjustment of frame structure, realization of wireless uplink and downlink resource configuration, and the like. In addition, the private network user can perform self-service through the operation and maintenance management platform to manage and monitor the network quality of all wireless and core network devices.

[0164] Overall, the independent private network resources are completely isolated, the public network adjustment does not affect the private network business, the private network business quality is guaranteed, the internal application data, terminal quantity, location, and all other information do not leave the power park, and the most stringent data isolation and security requirements are met. However, all devices of the independent private network need to be constructed separately, and the construction and maintenance cost is high considering high reliability.

[0165] In some embodiments, the hybrid communication network further includes:

[0166] The non-independent private network includes a partially shared private network;

[0167] The partially shared private network is configured to share part of core network elements.

[0168] The independent private network and the non-independent private network share a core network control plane.

[0169] The private network traffic of the non-independent private network is accessed to the shared base station through the air interface of the independent frequency band in the park. The internal application traffic of the non-independent private network is distributed through the locally sunk UPF and flows to the application platform carried by the private cloud or edge cloud (MEC) in the park. The signaling traffic of the non-independent private network is processed through the public network core network based on the user's demand for security isolation.

[0170] In the exemplary embodiment, the network relies on the 5G public network and is operated by a traditional operator. The non-independent private network includes two forms: a partially shared private network that shares part of core network elements, such as UPF, session management function (SMF), AMF, unified data management function (UDM), and the like, and uses part of the public network frequency of the operator as the exclusive frequency of the private network in the park. The partially shared private network is mainly for power users who have requirements such as no data out of the park and low latency. In the partially shared private network scheme, the core network user plane of the private network can be sunk to the park or an independent core network can be built in the park for core network deployment.

[0171] On the wireless side, the partially shared private network shares the hardware facilities of the public and private network base stations in the park, reduces the construction cost, and uses the private network base station to supplement the weak coverage or blind area of the public network. The operator in the park divides part of the public network frequency as the exclusive frequency band of the user private network, ensures no frequency interference between the private network and the public network, and ensures reliable private network data transmission.

[0172] On the core network side, the partially shared private network should be deployed based on the different requirements of industry users for data security isolation.

[0173] On the one hand, the public and private networks can share the core network control plane, and the private network exclusively sinks the core network user plane to the local park to meet the needs of industry users for internal application data not to leave the park, reduce the core network construction and maintenance cost, and support terminal roaming outside the park. On the other hand, the private network can deploy an independent core network to ensure that any information of internal applications and terminal card numbers does not leave the park, and meet the higher demand for security isolation.

[0174] The private network traffic accesses the shared base station through the independent air interface in the park, the internal application traffic is distributed through the local sunk UPF, directly flows to the application platform carried by the private cloud or edge cloud (MEC) in the park, and the signaling traffic can be processed through the public network core network or directly through the independent core network of the private network according to the user's demand for security isolation.

[0175] The private network user can perform rich network operation and maintenance operations through the operation and maintenance platform provided by the operator, self-manage the access permission of the terminal, configure the IP address pool of the terminal, set the differentiated QoS parameter, monitor the network quality and the like.

[0176] Since the independent frequency is divided for the partial shared private network in the park, the private network service is transmitted in the independent frequency band, and the public network service will not affect the channel quality of the private network service. In addition, compared with the independent private network, the partial shared private network and the public network shared base station can reduce the network construction cost to a certain extent. However, the specific cost saving is related to the demand of the private network service for the network coverage and the public network coverage. Once the public network coverage does not meet the user's demand, the private network base station needs to be constructed for supplement. Moreover, it cannot be ignored that the base station sharing will cause the mutual influence of the public network and the private network in the aspects of coverage, uplink and downlink resource configuration and the like.

[0177] Virtual private network: the virtual private network provided through the technologies of slicing, QoS and DNN (Date Network Name) customization, mainly faces the power users with relatively low demand for security. Among them, the virtual private network refers to the shared wireless access equipment, frequency, bearing network and core network of the private network and the public network, and the virtual private network is realized through the logical isolation of slicing.

[0178] On the wireless side, the public network and the private network share the base station and the frequency, and the logical isolation and priority scheduling of the spectrum resources of the public network and the private network are realized through slicing, so as to reduce the construction cost. On the core network side, the public network and the private network share the core network control plane resource pool, and the different degrees of isolation are realized through slicing, so as to reduce the core network construction cost and maintenance difficulty; the private network user shares the core network user plane pool sunk to the vicinity of the user, and the shared user plane resource pool is isolated through slicing, so as to reduce the transmission delay. The private network user traffic accesses the shared base station through the priority scheduling or frequency reservation based on slicing on the wireless side.

[0179] 1) The application traffic is distributed through the UPF sunk to the vicinity of the user, flows to the application platform of the industry user, reduces the transmission delay, and realizes the isolation of the business data to a certain extent;

[0180] 2) The signaling traffic is processed through the public network core network resource pool, but the isolation of the core network control plane of the private network can be realized through the slicing technology according to the user's demand for security isolation.

[0181] Users using virtual private networks can subscribe to slice services through the slice management system and operation and maintenance management platform, manage the access rights of terminals, set differentiated QoS parameters, configure terminal IP address pools, and other business opening and network operation and maintenance operations.

[0182] The virtual private network shares base stations, frequencies and core network resources with the public network, and realizes logical isolation through slice technology, greatly reduces the network construction cost, and is very suitable for wide-area scenarios that need to be deployed in a large range. However, when there is a shortage of network resources, resource preemption between public and private networks will occur. In addition, the public network may not meet the business needs of various private network users in terms of coverage, uplink and downlink resource configuration, etc. Once adjusted, it may cause mutual influence between public and private networks.

[0183] 3) Comparison of network solutions: From the aspects of data security, network transmission delay, network slicing capability, industry chain maturity, construction and operation difficulty, investment scale and policy and technical feasibility, the network providing capabilities and advantages and disadvantages of the three network modes are analyzed.

[0184] The virtual private network solution has advantages in policy feasibility and construction and operation difficulty, the independent private network solution has advantages in data security, network transmission delay and network slicing capability, and the hybrid private network is between the two.

[0185] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered listing of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor- based system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions, or a combination of these. For the purposes of this specification, a "computer-readable medium" can be any apparatus that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium include the following: an electrical connection having one or more wires (electrical apparatus), a portable computer diskette (magnetic apparatus), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber (optical apparatus), and a portable compact disc read-only memory (CDROM). In addition, the computer-readable medium can even be paper or other suitable medium on which the program can be printed, because the program can be electronically obtained, for example, by optical scanning of the paper or other medium, followed by electronic conversion, interpretation, or processing, if necessary, in other suitable manner, and then stored in the computer memory.

[0186] It should be understood that portions of the present disclosure can be realized with hardware, software, firmware or a combination thereof. In the foregoing embodiments, a plurality of steps or methods can be realized with software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if realized with hardware, and as in another embodiment, it can be realized with any one or a combination of the following technologies known in the art: discrete logic circuit having logic gates for implementing logic functions on data signals, application specific integrated circuits having appropriate combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), etc.

[0187] In the description of the present disclosure, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present description, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0188] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0189] In addition, the terms "first", "second", and the like used in the embodiments of the present disclosure are only for the purpose of description and can not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated in the embodiments. Therefore, the features defined with "first", "second" and the like in the embodiments of the present disclosure can explicitly or implicitly indicate that the embodiments include at least one of the features. In the description of the present disclosure, the meaning of the word "plurality" is at least two or two or more, such as two, three, four, etc., unless otherwise specifically limited in the embodiments.

[0190] In the present disclosure, unless otherwise explicitly specified and limited in the embodiments, the terms "mounting", "connecting", "connecting" and "fixing" and the like appearing in the embodiments should be understood in a broad sense. For example, the connection can be a fixed connection, or a detachable connection, or an integral part, which can be understood as a mechanical connection, an electrical connection, etc. Of course, it can also be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements, or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific implementation situation.

[0191] In the present disclosure, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0192] Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present disclosure. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present disclosure.

Claims

1. An electric power system, characterized by The hybrid communication network comprises a virtual private network area, a hybrid private network area, and an independent private network area. The virtual private network area adopts a virtual private network networking scheme, which comprises at least one of a first wireless network, a first bearing network, and a first core network. The hybrid private network area adopts a hybrid private network networking scheme, which comprises at least one of a second wireless network, a second bearing network, and a second core network. The independent private network area adopts an independent private network networking scheme, which comprises at least one of a third wireless network, a third bearing network, and a third core network. The data security of the third wireless network is greater than that of the second wireless network, and the data security of the second wireless network is greater than that of the first wireless network. The data security of the third bearing network is greater than that of the second bearing network, and the data security of the second bearing network is greater than that of the first bearing network. The data security of the third core network is greater than that of the second core network, and the data security of the second core network is greater than that of the first core network. The network transmission delay length of the third wireless network is greater than that of the second wireless network, and the network transmission delay length of the second wireless network is greater than that of the first wireless network. The network transmission delay length of the third bearing network is greater than that of the second bearing network, and the network transmission delay length of the second bearing network is greater than that of the first bearing network. The network transmission delay length of the third core network is greater than that of the second core network, and the network transmission delay length of the second core network is greater than that of the first core network. The first wireless network adopts a DNN slice architecture, wherein the DNN slice architecture comprises a first management information area slice and a first production control area slice; the first management information area slice adopts 5QI priority guarantee on the wireless side and VPN isolation on the transmission side.

2. The power system of claim 1, wherein, The first bearing network adopts VPN isolation or time slot isolation. The first core network adopts an operator core network to network based on a logical slice. The second wireless network comprises a second management information area slice and a second production control area slice; the second management information area slice adopts 5QI priority guarantee on the wireless side and VPN isolation on the transmission side.

3. The power system of claim 1, wherein, The second production control area slice adopts RB resources on the wireless side, and distinguishes the priority of different services through 5QI priority inside the RB resource pool; and adopts FlexE hard pipe guarantee on the transmission side, and is provided with VPN isolation inside the hard pipe. The second bearing network adopts VPN isolation or time slot isolation. The second core network adopts power UPF deployment in a substation, a city company, and a provincial company. The third wireless network adopts an operator spectrum, a power dedicated base station, a UR_U dedicated base station, and a 5G spectrum dedicated base station.

4. The power system of claim 1, wherein, The third bearing network is a self-built bearing network. ​ The third core network is a self-built core network, and the third core network is configured to be connected with an operator network.

5. The power system of claim 1, wherein, The hybrid communication network further comprises: An independent private network; the independent private network is a local area park construction independent base station, and adopts a power private network to distribute an independent frequency band; wherein, at the core network side of the independent private network, the control plane and the user plane are completely isolated from the public network, and all service information and control information are locally stored; The private network traffic of the independent private network is accessed to the independent base station through the air interface of the independent frequency band, and the internal application traffic is directly flowed to the application platform carried by the private cloud or the edge cloud (MEC) in the park through the local UPF shunting; The signaling traffic of the independent private network is processed through the core network of the independent private network.

6. The power system of claim 5, wherein, The hybrid communication network further comprises: A non-independent private network; the non-independent private network comprises a partially shared private network; The partially shared private network is configured to share part of the core network elements; The independent private network and the non-independent private network share the core network control plane; The private network traffic of the non-independent private network is accessed to the shared base station through the air interface of the independent frequency band in the park; the internal application traffic of the non-independent private network is flowed to the application platform carried by the private cloud or the edge cloud (MEC) in the park through the local UPF shunting; and the signaling traffic of the non-independent private network is processed based on the user's demand for security isolation through the public network core network.

7. A power system construction method characterized by comprising: It comprises: Obtaining the power supply demand of the user power system; wherein, the power supply demand at least comprises data security and network transmission time length; Based on the power supply demand of the user power system, a hybrid communication network is constructed; wherein, the hybrid communication network at least comprises one of the following: A virtual private network area, a hybrid private network area and an independent private network area; The virtual private network area adopts a virtual private network networking scheme, and the virtual private network networking scheme comprises at least one of a first wireless network, a first bearing network and a first core network; The hybrid private network area adopts a hybrid private network networking scheme, and the hybrid private network networking scheme comprises at least one of a second wireless network, a second bearing network and a second core network; The independent private network area adopts an independent private network networking scheme, and the independent private network networking scheme comprises at least one of a third wireless network, a third bearing network and a third core network; The data security of the third wireless network is greater than that of the second wireless network, and the data security of the second wireless network is greater than that of the first wireless network; The data security of the third bearing network is greater than that of the second bearing network, and the data security of the second bearing network is greater than that of the first bearing network; The data security of the third core network is greater than that of the second core network, and the data security of the second core network is greater than that of the first core network; The network transmission time length of the third wireless network is greater than that of the second wireless network, and the network transmission time length of the second wireless network is greater than that of the first wireless network; The network transmission delay length of the third core network is greater than the network transmission delay length of the second core network, and the network transmission delay length of the second core network is greater than the network transmission delay length of the first core network. The network transmission delay length of the third core network is greater than the network transmission delay length of the second core network, and the network transmission delay length of the second core network is greater than the network transmission delay length of the first core network.

8. The power system building method according to claim 7, characterized by, The first wireless network adopts a DNN slicing architecture; wherein the DNN slicing architecture comprises a first management information area slice and a first production control area slice; the first management information area slice adopts 5QI priority guarantee on the wireless side and adopts VPN isolation on the transmission side; The first bearer network adopts VPN isolation or time slot isolation; The first core network adopts an operator core network to network based on a logical slice group.

9. The power system building method according to claim 7, characterized by, The second wireless network comprises a second management information area slice and a second production control area slice; the second management information area slice adopts 5QI priority guarantee on the wireless side and adopts VPN isolation on the transmission side; The second production control measurement area slice adopts RB resources on the wireless side, and distinguishes the priority of different services through 5QI priority inside the RB resource pool; and adopts FlexE hard pipe guarantee on the transmission side, and is provided with VPN isolation inside the hard pipe; The second bearer network adopts VPN isolation or time slot isolation; The second core network adopts power UPF deployment in a substation, a city company, and a provincial company.

10. The power system building method according to claim 7, wherein, The third wireless network adopts an operator spectrum, a power dedicated base station, a UR_U dedicated base station, and a 5G spectrum dedicated base station; The third bearer network is a self-built bearer network; The third core network is a self-built core network, and the third core network is used for interfacing with an operator network.

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