Huawei helps State Grid Shandong Electric Power build the country's first IoT pilot power distribution room

Building "Ubiquitous Power Internet of Things" has become the most urgent and important task of State Grid Corporation of China. The State Grid's 2019 Document No. 1 clearly stated that it will focus on building an energy Internet, so that a strong smart grid that carries power flows and a ubiquitous power Internet of things that carry data flows together constitute a "three-in-one" energy flow of energy flow, business flow, and data flow. Internet, and specific requirements "explore the construction of a power distribution Internet of Things demonstration zone with smart distribution terminals as the core".

The State Grid Shandong Electric Power Company’s 2019 NPC and CPPCC report emphasized “establishing the ubiquitous power Internet of Things “Shandong model”. The most urgent and important task of Shandong Company is to accelerate the construction of the ubiquitous power Internet of Things, taking the lead Carry out the application practice of the power distribution Internet of Things construction system. Huawei responded positively by integrating the most advanced ICT technologies such as "Big Cloud IoT" with the new generation of power systems, exploring the adaptation of IoT technologies in power distribution business scenarios, and accessing them through a unified IoT platform All kinds of smart terminals, unified access terminal data models and access methods, realize plug-and-play of various terminal equipment, and help Shandong Company to pioneer, pioneer and innovate in the field of power distribution.

Shandong company’s Internet of Things pilot power distribution room work started in January 2019. In accordance with the business needs of Shandong’s power distribution network, Huawei and partners such as Shandong Diangong Electric, Xu Ji, and Lusoft provide power distribution materials for Shandong company Networking solutions, jointly exploring the implementation of the “cloud, management, edge, and end” top-level design architecture of the State Grid, and using the Internet of Things technology to meet the needs of flexible, rapid development and safe production of distribution network services.

On March 25th, Shandong Jinan Hanyu Golden Grain Interconnection Pilot Power Distribution Room completed the renovation and upgrade, marking that the State Grid Shandong Electric Power Company took the lead in building a power distribution room based on power distribution Internet of Things technology. The ground application of the “distribution Internet of Things technology system of ”, management, edge and end”, has made a key breakthrough in the new technology direction of the power distribution Internet of Things.

Build a low-voltage power distribution Internet of Things with smart distribution terminals as the core, which can realize convenient connection of various low-voltage end equipment such as incoming/outgoing cabinet switches, branch box switches, partial discharges, distributed power supplies, charging piles, etc. Based on the comprehensive collection of electrical quantity, state quantity, and environmental quantity information, we will further realize the local autonomy of low-voltage distribution network, promote the transformation of low-voltage distribution network management mode from "production-oriented" to "service-oriented", and improve Customer-centric "essential service" level.

The cloud master station realizes flexible expansion, and the application is quickly launched

The new generation of distribution automation master station introduces the cloud-based IoT platform technology to realize the cloudification and elasticity of the distribution terminal Management, support millions of equipment access and intelligent operation and maintenance management; build an Internet of Things platform to meet the requirements of large-capacity, high-concurrency data collection and processing, and achieve effective access to a large number of Internet of Things terminals; the master station applies microservices to achieve configuration Flexible expansion and rapid iteration of network application requirements; based on big data analysis and artificial intelligence, deep integration of multi-professional and multi-service data, to achieve comprehensive perception of the operation status of the distribution network, data fusion and intelligent applications.

The Internet of Things networking realizes "zero wiring" network construction, and local termination of heterogeneous protocols.

The communication network mainly includes two parts: the remote communication network and the local communication network. The remote communication is based on the 4G public network. The always-on technology meets the high-reliability, low-latency, and differentiated communication requirements between the IoT platform and edge nodes; local communication is based on IP-based broadband carrier and micro-power wireless, and has built a "zero-wire" communication network in low-voltage stations; Verifies the application scenarios and applicability of MQTT and CoAP for the second time, realizes low-latency state collection and real-time control from side to side, realizes data sharing and interaction for "topic" publishing and subscription between side and cloud; realizes massive amounts through IoT intelligent communication unit The local termination of heterogeneous agreements successfully solved the problems of large types and quantities of equipment, scattered installation locations, wiring difficulties, and power outages in construction.

Edge computing enables local decision-making of low-voltage stations, edge autonomy

Smart distribution terminal adopts edge computing EC-IoT architecture, based on hardware platform and software APP concept, APP is configured on demand , Real-time delivery, equipment function expansion on demand, to achieve full collection of equipment information in the low-voltage station area, local analysis, cooperation with the master station to achieve end-cloud collaboration, and enhance the station-side collaborative processing capabilities.

Relying on the container and edge computing capabilities of the intelligent distribution transformer terminal, establish a standard model of power distribution equipment and data storage standards, optimize the APP application software architecture, and realize the integration and sharing of multi-source data; research local intelligent decision analysis algorithms and APP applications Develop and implement advanced applications such as fault research and judgment, operation analysis, load forecasting, equipment linkage, risk warning, etc.; establish a cloud-side efficient coordination mechanism to achieve real-time interaction of key data and regular backup of full data, avoiding massive terminals to the cloud master station Problems such as data pressure, bandwidth limitations, and insufficient computing performance.

The end terminal communication protocol is normalized to realize panoramic visualization and panoramic perception.

The self-describing information model and service interface definition specification of the intelligent "end" device in this pilot implementation, unified information model , Normalize the terminal terminal communication protocol, and realize the evolution of terminal management of low-voltage power distribution from blind management to visualization. Through the built-in lightweight IoT operating system LiteOS in smart devices, it unifies IoT protocol standards and adapts to broadband carrier, micro-power wireless and other IoT communication technologies to achieve full coverage of low-voltage equipment IoT, electrical capacity, operating status, and environment Total perception of quantity.

The landing application of "cloud, pipe, edge, end" power distribution Internet of Things technology can solve the current power distribution in terms of data interactive support in low-voltage power distribution stations, intelligent equipment management and control, multi-service integration and intelligent decision-making. Professional pain points and difficult problems, to realize the active perception of power outages, active repair of faults, and automatic generation of low-voltage topology, effectively improve the efficiency of construction and operation and maintenance, and quickly realize functional transformation and business adjustment in a low-cost manner, and adapt to the energy Internet Rapid development of demand.

Huawei is committed to bringing the digital world to everyone, every family, and every organization, building a smart world with all things connected, and helping enterprises with their digital transformation. In the future, Huawei will, as always, work with ecological partners to conduct more in-depth research on the cloudification and Internet of Things of the main power distribution automation station, and the intelligent technology of the equipment in the station area, and help Shandong Company to coordinate the construction of the power distribution Internet of Things demonstration zone. . At the same time, building a power distribution Internet of Things ecosystem is a long-term process that requires the participation of multiple parties and innovates a healthy self-growth mechanism. While continuously solving a series of key technical problems, it realizes innovation in operation and management models to ensure the Each party continues to develop rapidly. Through the key technology verification of the power distribution room of the Internet of Things pilot, the ecosystem of the power distribution Internet of things was created, and finally the army operation was realized, and the multi-win win of customers, partners, and Huawei was realized through sunshine cooperation.