Wireless authentication and privacy infrastructure (WAPI) wireless internet of things system in transformer substation

Abstract

The utility model discloses a wireless authentication and privacy infrastructure (WAPI) wireless internet of things network system in a transformer substation, which comprises a WAPI server, a data communication network, a wireless controller, an optical line terminal (OLT), a plurality of optical splitters, a plurality of internet of things sink nodes, a plurality of WAPI APs in the transformer substation and a plurality of terminal devices, one Internet of Things aggregation node corresponds to one optical splitter and a plurality of WAPI APs in the transformer substation, one WAPI AP in the transformer substation corresponds to a plurality of terminal devices, the WAPI server is connected with the wireless controller through a data communication network, the wireless controller is connected with the OLT, the OLT is connected with the optical splitters, the optical splitters are connected with the WAPI APs in the transformer substations through the corresponding Internet of Things aggregation nodes, and the WAPI APs in the transformer substations are connected with the wireless controller through the data communication network. And the WAPI AP in each transformer substation is connected with the corresponding terminal equipment. The system can realize information transmission at a higher speed, lower time delay, more access, farther coverage and penetration and lower energy consumption and cost.

Description

Technical Field

[0001] The utility model belongs to the field of wireless communications and relates to a WAPI wireless Internet of Things network system in a transformer substation. Background Art

[0002] With the advancement of smart grid and digital grid construction, new services represented by inspection robots, visual operations, online monitoring of substation status, and digital meters have emerged in substations. These services generally present the characteristics of "large bandwidth, mobility, large connections, and low latency", which put forward higher construction requirements for the in-station communication network. However, the current in-station communication network cannot meet the above requirements, especially when the substation is located in a remote area, the wireless network signal is insufficient, and effective data transmission cannot be achieved without relying on operators. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and provide a WAPI wireless Internet of Things network system in a substation, which can realize information transmission with faster speed, lower latency, more access, wider coverage, stronger penetration ability and lower energy consumption and cost.

[0004] To achieve the above-mentioned purpose, the utility model discloses a WAPI wireless Internet of Things network system in a substation, including a WAPI server, a data communication network, a wireless controller, an OLT, several optical splitters, several IoT aggregation nodes, several WAPI APs in the substation and several terminal devices;

[0005] One IoT aggregation node corresponds to one optical splitter and several WAPI APs in substations. One WAPIAP in a substation corresponds to several terminal devices. The WAPI server is connected to the wireless controller through the data communication network. The wireless controller is connected to the OLT. The OLT is connected to each optical splitter. Each optical splitter is connected to the WAPI AP in each substation through the corresponding IoT aggregation node. The WAPI AP in each substation is connected to the corresponding terminal device.

[0006] The terminal equipment includes patrol terminals, smart helmets, patrol robots, control balls, asset tags and positioning tags.

[0007] The terminal device is provided with a CPE module to perform wireless communication with a WAPI AP in the substation.

[0008] The WAPI AP in the substation is connected to the IoT aggregation node via a Category 5e shielded twisted pair cable.

[0009] The optical line terminal OLT and the optical splitter constitute the EPON system.

[0010] Each optical splitter and OLT are networked in parallel.

[0011] The utility model has the following beneficial effects:

[0012] During the specific operation of the WAPI wireless Internet of Things system in the substation described in the utility model, the terminal equipment communicates wirelessly with the WAPI AP in the substation through the CPE module thereon, the AP is connected to the IoT aggregation node through a Category 6 cable, and then connected to the wireless controller through EPON, and then transmitted back to the WAPI server through the data communication network. Information transmission can be achieved with faster speed, lower latency, more access, wider coverage, stronger penetration ability, lower energy consumption and cost, and it does not rely on the operator's environment, has a simple structure, strong compatibility, and is simple to manage and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model.

[0014] Among them, 1 is the WAPI server, 2 is the data communication network, 3 is the wireless controller, 4 is the OLT, 5 is the splitter, 6 is the IoT aggregation node, 7 is the WAPI AP in the substation, 8 is the patrol terminal, 9 is the smart helmet, 10 is the patrol robot, 11 is the control ball, 12 is the asset tag, and 13 is the positioning tag. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only an embodiment of a part of the utility model, not all embodiments, and is not intended to limit the scope of the disclosure of the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concepts disclosed in the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the utility model.

[0016] The accompanying drawings show schematic diagrams of structures according to the disclosed embodiments of the utility model. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0017] refer to Figure 1The WAPI wireless Internet of Things network system in the substation of the utility model includes a WAPI server 1, a data communication network 2, a wireless controller 3, an OLT 4, several optical splitters 5, several Internet of Things aggregation nodes 6, several WAPIAPs 7 in the substation and several terminal devices;

[0018] One IoT convergence node 6 corresponds to one optical splitter 5 and several WAPI AP7 in substations. One WAPI AP7 in substation corresponds to several terminal devices. The WAPI server 1 is connected to the wireless controller 3 through the data communication network 2. The wireless controller 3 is connected to the OLT4. The OLT4 is connected to each optical splitter 5. Each optical splitter 5 is connected to the WAPI AP7 in each substation through the corresponding IoT convergence node 6. The WAPI AP7 in each substation is connected to the corresponding terminal device. The terminal device includes a patrol terminal 8, a smart helmet 9, an inspection robot 10, a control ball 11, an asset tag 12 and a positioning tag 13.

[0019] Specifically, the terminal device performs wireless communication with the WAPI AP7 in the substation through the CPE module.

[0020] In this embodiment, the WAPI AP 7 in the substation is connected to the IoT aggregation node 6 via a Category 5e shielded twisted pair cable.

[0021] In this embodiment, the WAPI AP7 in the substation supports 2.4G / 5G dual-band, all radio frequencies support the 802.11ax protocol, the indoor AP has a built-in smart antenna, and the outdoor AP is equipped with a dual-band omnidirectional antenna for receiving wireless terminal device signals.

[0022] In this embodiment, the optical line terminal OLT4 and the splitter 5 constitute an EPON system. OLT4 is based on a distributed structure. Each splitter 5 is networked in parallel with OLT4. Failure or power failure of one or more splitters 5 will not affect the normal operation of OLT4 and other splitters 5. The EPON single PON port provides a symmetrical 1.25Gbps transmission rate for upstream and downstream, and the maximum transmission distance can reach 20 kilometers.

[0023] In this embodiment, the wireless controller 3 is a terminal security access control device at the convergence layer of the Internet of Things network, which performs unified equipment management, unified service configuration and centralized data forwarding for all broadband wireless APs in the station.

[0024] Finally, it should be noted that the utility model adopts WAPI network communication to transmit information, avoiding the limitations of remote substations and insufficient wireless network signals. It can have the characteristics of two-way authentication, safer transmission, higher speed and longer distance in an environment that does not rely on operators, and realizes real-time monitoring of wireless terminal equipment in the station and data upload.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. A WAPI wireless Internet of Things network system in a substation, characterized in that: It includes a WAPI server (1), a data communication network (2), a wireless controller (3), an OLT (4), a plurality of optical splitters (5), a plurality of IoT aggregation nodes (6), a plurality of WAPIAPs (7) in substations, and a plurality of terminal devices; One IoT aggregation node (6) corresponds to one optical splitter (5) and several WAPI APs (7) in substations, one WAPI AP (7) in substations corresponds to several terminal devices, the WAPI server (1) is connected to the wireless controller (3) through the data communication network (2), the wireless controller (3) is connected to the OLT (4), the OLT (4) is connected to each optical splitter (5), each optical splitter (5) is connected to the WAPI AP (7) in each substation through the corresponding IoT aggregation node (6), and the WAPI AP (7) in each substation is connected to the corresponding terminal device.

2. The WAPI wireless Internet of Things network system in a substation according to claim 1 is characterized in that: The terminal equipment includes a patrol terminal (8), an intelligent helmet (9), a patrol robot (10), a control ball (11), an asset tag (12) and a positioning tag (13).

3. The WAPI wireless Internet of Things network system in a substation according to claim 1 is characterized in that: The terminal device is provided with a CPE module to perform wireless communication with a WAPI AP (7) in the substation.

4. The WAPI wireless Internet of Things network system in a substation according to claim 1 is characterized in that: The WAPI AP (7) in the substation is connected to the IoT aggregation node (6) via a Category 5e shielded twisted pair cable.

5. The WAPI wireless Internet of Things network system in a substation according to claim 1 is characterized in that: The optical line terminal OLT (4) and the optical splitter (5) constitute the EPON system.

6. The WAPI wireless Internet of Things network system in a substation according to claim 1 is characterized in that: Each optical splitter (5) and the OLT (4) are networked in parallel.

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