Security requirements from single-dimensional ‘equipment security’ to four-dimensional ‘security’ to ensure the long-term stable and reliable operation of the new energy power system. ‘Four-dimensional’ refers to supply, equipment, network and power system security; the security of the new power system not only requires manufacturers themselves, but also the joint efforts of the industry and society.
Trend 6 Cell to Grid Energy Storage Security
The scale application of energy storage and the upgrading of safety standards require energy storage to realise the safety of the grid from the cell itself to the system level. Cell to Grid energy storage safety can be realised through refined monitoring and management from the electric cell, battery pack, battery cluster, energy storage system to the grid to create a safer and more efficient energy storage system with an active grid structure.
Trend 7 MLPE & CLPE
MLPE & CLPE have become the new requirements for distributed power plants, as fine management has driven the commercialisation of module-level power electronics and gradually moved towards energy storage systems. MLPE enables fine control of PV modules, ensuring optimal power generation at the module level, as well as monitoring and safe shutdown at the module level. Fine management towards energy storage system, Li-ion battery energy storage system is evolving towards smaller unit management at Pack level and cell level, so CLPE technology is proposed.
Trend VIII high voltage and high reliability
High voltage continues to reduce the LCOE (cost of kilowatt-hour electricity) of photovoltaic storage systems, and high reliability continues to improve system availability and achieve ultimate safety. PV inverter will continue the trend of high voltage, DC breakthrough 1500V, AC breakthrough 1000V system. Through the application of new materials, new components to enhance the reliability of the equipment; through the design of bipolar high-voltage architecture, system-level safety protection capabilities to ensure the continuous and reliable operation of the photovoltaic system.
Trend nine high frequency and high density
The application of third-generation semiconductors, materials science, heat dissipation technology, engineering technology and other dimensions of technology upgrades, superimposed on digital technology, continue to enhance the power density of power electronic converters. It is expected that in the next three to five years, photovoltaic inverters will enhance the energy density by more than 30%, optimisers by more than 50%, and energy storage by more than 10%, promoting the quality and efficiency of photovoltaic systems.
Trend 10 High-quality power quality
Promote the scale application of photovoltaic storage system in the whole industry through the continuous improvement of high-quality power quality. In the next three to five years, global IEC standards, pan-European standards, Chinese national standards, etc., are constantly improving the requirements for power quality. The improvement of various indicators will ensure high-quality power quality, and will accelerate the emergence of PV as a primary energy source.
‘Huawei Smart PV will continue to increase R&D investment, focus on the innovation and integration of 4T and other technologies, deeply understand the development needs of customers and the industry, and create reliable, high-quality products and solutions, so that we can work with global customers and partners to promote the high-quality development of the industry, and make green power benefit thousands of industries and households.’ Hao Yingtao said.
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