Recently, in Shenzhen, Huawei held a conference on the top ten trends of smart photovoltaic for the industry.
At the meeting, Chen Guoguang, president of Huawei Intelligent Photovoltaic Business, comprehensively interpreted the ten trends of Intelligent Photovoltaic from the dimensions of multi-scenario collaboration, digital transformation and security reconstruction, providing reference for the transformation and upgrading of the photovoltaic industry, and issued a heavy white paper. The top ten trends in the development of the PV industry released by
Huawei are as follows:
Trend 1 With the increasing proportion of new energy sources, PV storage generators
have brought impact to the power grid, making it face a variety of complex technical problems such as system stability, power balance and power quality. Therefore, changing the new energy control mode, improving the active and reactive power control and response capabilities, actively mitigating frequency and voltage fluctuations, and moving photovoltaic power generation from Grid Following to Grid Forming will become an important measure to solve the problem of photovoltaic grid-connected consumption.
Through the integration of photovoltaic and storage + Grid Forming technology, an intelligent photovoltaic and storage generator is built, which changes the control logic of new energy from current source control to voltage source control, and has strong inertia support, instantaneous voltage stabilization and fault ride-through capabilities, so that photovoltaic power generation can move from adapting to the grid to supporting the grid, and accelerate photovoltaic to become the main energy source.
Through the application of new materials such as silicon carbide and gallium nitride, as well as the full combination of digital technology with power electronics technology and thermal management technology, it is expected that the power density of inverters will be increased by about 50% in the next five years, while ensuring the high reliability of equipment. In the 2.2G W photovoltaic power station of Hainan UHV project in Qinghai Province, 9216 sets of equipment are running steadily in the harsh environment of 3100 meters high altitude, and the total usable time of Huawei inverters is up to 20 million hours. System availability is up to 99.
Compared with the traditional centralized energy storage solution, the intelligent string energy storage solution is a cross-border integration of digital information technology, photovoltaic and energy storage technology, based on the distributed energy storage system architecture. Innovative technologies such as battery module-level energy optimization, battery single-cluster energy control, digital intelligent management and full modular design are adopted to realize the value of higher discharge, better investment, minimalist operation and maintenance, safety and reliability in the whole life cycle of energy storage system.
It has three characteristics of string type, intellectualization and modularization. In Singapore 200MW/200MWh project, the largest energy storage power station project in Southeast Asia, aiming at the application scenarios of customer grid frequency modulation and spinning reserve, intelligent string energy storage achieves longer constant power output through fine management of charging and discharging, and guarantees frequency modulation income. At the same time, through the automatic SOC calibration function at the battery pack level, the labor cost is saved and the operation and maintenance efficiency is greatly improved.
At present, the traditional end-side BMS can only summarize and simply analyze the limited data, and it is almost impossible to achieve early detection and early warning of faults. Therefore, it is necessary to make BMS (Battery Management System) "more sensitive", "more intelligent", and even "predict the future", which depends on the collection and processing of a large amount of data, and combined with AI technology to find the best advantage and predict the trend. The sixth
trend is to integrate
the "optical storage network" into the power generation side, build a clean energy base for optical storage, and use UHV to send it to the load center. On the power side, the construction of virtual power plant (VPP) combines massive distributed photovoltaic system, energy storage and controllable load, flexibly dispatches decentralized power generation units and storage units, and realizes peak shaving and valley filling of power grid.
Therefore, the construction of a stable energy system with the integration of "optical storage network" and the support of photovoltaic transmission and absorption will become a decisive measure to solve energy security and energy independence. Through the integration of digital technology, power electronics technology and energy storage technology, it can achieve multi-energy complementarity, coordination and mutual benefit. The application of 5G, AI and cloud technology can intelligently manage, operate and trade massive distributed optical storage systems, build VPP virtual power plants, provide strong technical support for user-side adjustable resources to participate in market transactions, load-side response, and peak shaving and valley filling of power grids. The seventh
trend is to reconstruct the extreme security
of optical storage, which is the cornerstone of industrial development. This requires us to consider systematically from the perspective of the whole scene and the whole link, and fully integrate power electronics technology, electrochemical technology, thermal management technology and digital technology to reconstruct the extreme security of the system.
In the photovoltaic power station scenario, according to statistics, the faults caused by the DC side can account for more than 70% of all faults, and the inverter needs to have the functions of intelligent string segmentation and automatic terminal detection; In the distributed photovoltaic scenario, the arc fault automatic shutdown function AFCI will become the standard, and the component-level fast shutdown function will bring safety to maintenance and firefighters; In the energy storage scenario, it is necessary to combine power electronics, cloud and AI and other technologies to refine the management of energy storage products from the core to the system, from the traditional passive response and physical quarantine to active automatic protection, or even early warning, to achieve multi-dimensional security design from hardware to software, from structure to algorithm. The eighth
trend is that the safe and credible
photovoltaic system not only brings benefits, but also contains various security risks, including equipment security and information security. Equipment security risks mainly refer to downtime caused by equipment failure, and information security risks refer to external network attacks.
In order to cope with these challenges and threats, enterprises and organizations need to establish a set of "safe and credible" management mechanisms, including the reliability, availability, security and resilience of systems and equipment. In addition, the photovoltaic power plant system also needs to pay attention to the protection of personal and environmental safety and data privacy. The ninth
trend is that the
traditional photovoltaic power station has a large number of equipment, lacks information collection and reporting channels, basically belongs to the "dumb" type of equipment, and the power station is an "isolated island" type of power station, does not have the ability of coordination, and the management of the power station is also in the original "extensive" management.
By introducing advanced digital technologies such as 5G, Internet of Things, cloud computing, sensor technology and big data, traditional photovoltaic power plants can become "speaking" and "expressing" power plants, which can achieve the goal of "bit" management of "watt" and realize the visibility, manageability and controllability of the whole link of "generation-transmission-storage-distribution-use". At present, many photovoltaic power plants around the world are undergoing digital transformation, and it is expected that by 2027, more than 95% of the power plants will be fully digitized.
As the energy industry gradually moves towards the data-driven era, how to better collect, utilize and maximize the value behind the data has become one of the most concerned issues of the whole industry. AI technology can be widely applied to the new energy field with strong fluctuation and high uncertainty, and play an irreplaceable role in the whole life cycle of optical storage, such as manufacturing, construction, operation and maintenance, optimization and operation. The integration of
AI with cloud computing, big data and other supporting technologies will continue to deepen, and the tool chain around data processing, model training, deployment, operation and security monitoring will continue to enrich. In the field of new energy, AI, like power electronics and digital technology, will drive profound changes in the entire industry.
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