Building a new type of power system with new energy as the main body is an important strategic measure to ensure the security of energy supply and an important means to achieve the goal of carbon peak and carbon neutrality, which has great historical and realistic significance.
The construction of a new power system with new energy as the main body faces many challenges. First of all, the randomness, volatility and intermittence of clean energy power generation represented by scenery, as well as the space-time random distribution of electric vehicle load, lead to the further increase of the uncertainty faced by the system, the pressure of power and quantity balance is large, and the operation control of the grid is more complex and changeable. Second, new energy is vulnerable to extreme weather, and it is more difficult to ensure a high proportion of new energy connected to the grid, system security and reliable power supply. Zui, after a gigawatt of power system of traditional coal unit will be a large number of megawatt wind power generator is even lower capacity of photovoltaic power generation, especially the distribution network side grid pattern changes, the distributed characteristics of the more obvious, the number of new type of power generation equipment in the power system will reach ten million m level, system will need to deal with data of explosive growth.
The solution of the new problem needs the application of new technology, and the characteristics of the new power system will inevitably lead to new technology. In response to the challenges of the new power system construction, the need to "substantial, measurable and controllable" on the basis of further deepening, the need to cloud computing, big data, Internet, mobile Internet, artificial intelligence, a new generation of digital technology such as block chain as the core driving force, constantly improve the level of digitalization and networking, intelligent power grid, To accelerate the transformation of traditional power system from rigid to flexible and flexible new power system, it is necessary to use digital system theory to promote the optimization and reconstruction of operation control system, and to improve the all-domain interconnection and efficient perception ability of power grid based on the characteristics of digital technology.
Facing the construction of new power system, it should focus on the digitalization and intelligence of power grid, lead and optimize power grid energy flow and business flow with data flow, and support business innovation. Based on the "cloud-tube-edge-end" architecture of the global Internet of Things, it should focus on the "source network load, storage and use" business scenario of the new power system. Using "series edge sensor + technology + g communication, unified platform + + business intelligence and data fusion technology, form the overall solution to the system application of terminal and build" state of complete awareness, equipment complete connection, data fusion, all business intelligence "of the global Internet, promote new energy, flexible load such as the main body of broad, comprehensive perception of the Internet.
At the end, functions and performance of terminal devices will be defined more by software, and develop towards intelligent processing and multi-function integration. The rapid improvement of chip computing power and integration and the gradual maturity of lightweight Internet of Things operating system have solved the problem of insufficient computing power at the side. The technical architecture of "multi-professional function integration, intelligent stratification" and "intelligent processing" side equipment have become an important form of new power system. On the distribution network side, it realizes plug and play and remote maintenance between various sensing terminals and intelligent gateways.
In the side, the application of intelligent AI will gradually deepen. Combined with new type of power system, the source network load standby "requirement, the edges of the future will need a lot of Internet computing node implementation of the intelligent sensor, intelligent business terminal for unified access, data analysis and real-time computing devices or components, and the Internet of things platform of two-way, Shared cross major data in situ integration, regional autonomy and cloud edge collaborative business process. Based on the differences of business scenarios, edge iot computing nodes will gradually present three functional forms of side-end separation, side-end fusion and edge node, with the characteristics of hardware platform and software container, and achieve software and hardware decoupling, unified and universal architecture, personalized customized applications, open and shared terminal application ecology and other functions.
On the management side, the scenario of multi-type communication is further enriched. Load-side resources are increasingly diversified and dispersed, and hundreds of millions of sensor devices need information networking. The service demand of power communication network has been developing towards large connection, low delay, high reliability and large bandwidth. As the development direction of the new generation of wireless communication system, 5G will provide important support for the construction of digital power grid and provide a better solution for the wireless communication access of "the last kilometer" of power communication network. With the characteristics and advantages of ultra-high bandwidth, ultra-low delay and ultra-large scale connection, as well as the two core capabilities of network slicing and edge computing, 5G network can better meet the security, reliability and flexibility requirements of digital power grid services and promote the intelligent upgrade and development of power communication networks.
On the cloud side, the processing capacity of massive data will be further improved. With the construction of a new power system, a large number of equipment are connected to the distribution network. The distribution network side needs to obtain the electricity volume and state volume data of distributed power supply and field equipment in the low-voltage distribution platform area in time. Therefore, there are problems such as request priority division, protocol diversification, intermittent scale and push. It is necessary to increase the platform request priority division, protocol dynamic expansion, dynamic node management capabilities, strengthen the platform connection ability, equipment management ability and cloud-side collaboration ability, and extend the platform side to new applications such as distributed photovoltaic, new energy sites, wind energy, new energy storage, and intelligent charging piles. It should be based on the unified power grid data model, take the map as the entrance, carry the editing, analysis and management of the graphics, topology and ledger of all types of power grid equipment, realize the integration of geographical, physical and management data, and support the new power system related business applications in a flexible, open and fully compatible way.
Digital technology combined with power business scenarios will generate even greater value. In the digital scheduling based on cloud edge collaborative digital power grid technology architecture, such as virtual power plants, the net for the polymerization of the carrier, based on the artificial intelligence can complement each other, autonomous optimization of distributed control, edge cluster computing, main distribution collaborative integrated control technology, to realize the cloud side together, ubiquitous access, flexible customization and on-site decisions, It can meet the mass access and large-scale collaborative optimization of different types of power supply and micro-grid, and support the autonomous cruise of large power grid and intelligent management of micro-grid in the park.
In terms of digital power transmission, based on the Internet of Things platform, new technologies such as WAPI, Beidou positioning, intelligent deviation correction and mission routes are applied to upgrade aircraft patrol system, create a new mode of cloud nest inspection, and realize intelligent route planning and remote automatic driving of UAV. Simple uav nests, transmission sensing terminals, communication terminals and intelligent transmission gateways are developed to realize comprehensive monitoring and data collection of overhead and cable lines, realize panoramic information fusion and all-domain intelligent decision-making, and improve the safe operation and disaster prevention and resistance capabilities of transmission networks.
In the aspect of digital substation, relying on digital technology, optimize and upgrade the substation intelligent gateway to realize the full data collection of substation area two and three; Build substation operation support system by relying on Nannet Cloud and the global Internet of Things platform, strengthen the research of artificial intelligence algorithm, improve the identification accuracy of meter and equipment defects, develop the optimization configuration function of inspection points, and make practical intelligent inspection. Around the programmatic operation, the intelligent operation function is optimized, and the digital twin substation with panoramic perception, risk visibility and accessible operation is finally constructed.
In terms of digital distribution, distribution network production line demand oriented, with distribution intelligent gateway, intelligent sensor, intelligent equipment as the core, a secondary fusion based on global Internet platform, south network intelligence emerged, such as supporting platform, makes the distribution network operation support system, realize the distribution network equipment status of transparent and running state of transparent, support intelligent distribution network operations, intelligence service and intelligence operations, Improve power supply reliability and customer service.
In terms of digital electricity consumption, a demand side management platform will be built around carbon peak, carbon neutrality and new power system requirements, including resource management, orderly electricity consumption, demand response, energy replacement, energy saving services and other functions to support the development of smart electricity consumption business. Deploy automatic demand response controller, low voltage load control switch and other terminal equipment to strengthen the demand side load regulation capacity; On the customer side, promote electric energy replacement equipment, micro-grid and energy storage products to achieve green, low-carbon, scientific and orderly energy use.
It is a long and difficult process to promote the construction of a new power system with "digital technology + power business". All sectors should make joint efforts to improve the service capacity of the new power system, promote the transformation and upgrading of China's energy industry, and build a clean, low-carbon, safe and efficient energy system.
Wuhan Xinshengneng is a professional power testing equipment manufacturer. We pay close attention to the development and trends of power grid related industries. For more information, visit wuhan Xinshengneng's official website: www.whxsn.com
