With the development of the power grid and the increase of Distributed Energy Resources (DER) (such as solar energy and energy storage), the dynamics of the power grid have become more and more complex. The "grid support" function of DER (including inverters) is essential to ensure the reliable operation of the grid.

　　A few years ago, some states in the United States have begun to require inverters with "grid support" functions ("smart inverters") when connecting DERs to the grid, but there is no clear standard for hardware manufacturers to refer to. Make things complicated.

　　In 2020, the Institute of Electrical and Electronics Engineers (IEEE) issued the latest requirements for grid-connected inverters (IEEE 1547.1-2020): When connecting DER (such as solar energy, energy storage, and wind energy) to the grid, inverter The inverter must have the function of "interconnection", that is, "smart inverter", which allows customers to "view" relevant information (voltage and frequency) online, and can automatically respond to actions that maintain the stability of the grid.

　　The new standard has created an application guide for DER businesses, explaining what kind of "grid support" function inverter products should have, paving the way for states in the United States to adopt more modern data interconnection, and has contributed for supporting grid modernization for renewable energy and energy storage.

　　Now that IEEE 1547.1-2020 has been released, inverter and other equipment manufacturers can redesign existing products to meet the requirements. R&D engineers should have an in-depth understanding of these new functional requirements and test standards to ensure that the product developed can pass the test once the design is completed.

　　There will be a transition period from the issuance of the standards to the formal implementation, and manufacturers have about 19 months to pass the certification of these new standards. During this period, manufacturers can continue to use earlier standards for product certification.

　　The influence of IEEE 1547.1-2020 is not only in the United States, but also in Europe, Australia, India and other regions, which will undoubtedly bring new challenges to inverter manufacturers.

　　Lithium-ion battery (LIB) has become the main energy storage solution in modern social life. Among them, lithium iron phosphate batteries are a perfect replacement for lead-acid batteries, and they are the first choice for grid-connected peak shaving, off-grid energy storage, photovoltaic energy storage, UPS, data center and other industries.

　　Solar power generation system with lithium battery energy storage system is a very promising clean energy.