Micro Grid infrastructure must use narrow-band power line communication (PLC) technology to monitor and report regional electricity, renewable energy, and energy storage system power information in real time, so that the back-end power management platform can perform power distribution scheduling Smart energy management benefits, thus encouraging the three PLC standard alliances of G3, Prime and HomePlug to actively develop a new generation of specifications, chip solutions, and enclosure market territory. The three major PLC technology camps are competing with each other in the field of microgrid applications.
Wu Yujun, technical marketing manager of ST, said that Smart Grid and Micro Grid must have communication solutions that support different transmission distances in order to successfully connect with the power company's power management platform; among them, the use of low-frequency PLC technology It will be the main way for each regional micro-grid, as well as the interconnection of solar and energy storage systems within the micro-grid, thus attracting chip vendors to compete for card positions. STMicroelectronics has many years of development experience in the European smart grid market and is currently working closely with several power companies.
At this stage, the narrow-band PLC transmission technology that can support long distances is roughly divided into G3 and Prime standards, which are adopted in Italy, Spain, France and other countries. The United States and the Asia-Pacific region have also launched G3 or Prime regional micro In the field test of the power grid, the main chip suppliers are Maxim Integrated and STMicroelectronics.
Wu Yujun emphasized that STMicroelectronics joined the G3 and Prime Standard Promotion Alliance at the same time, has a complete grasp of PLC technology evolution and market demand, and currently has a share of 80% in the PLC chip market, with better development advantages; its latest generation The PLC system single chip (SoC) has led the industry to introduce Prime physical layer (PHY) and media access control layer (MAC) control engines, which helps simplify system design and accelerate the adjustment process of the power grid communication mechanism.
Lin Zhiliang, manager of the Maxim Integrated SP & C business unit, pointed out that since most countries have hundreds to thousands of power companies, relevant companies are more focused on compatibility in building smart grid infrastructure; It is planned to be compatible with G3 and Prime standards for the next generation. Among them, Maxim has recently launched a related chip development project due to its strong PLC patent lineup, and is expected to be the first to launch the world's first dual-mode PLC SoC.
In addition to the competition between the two major PLC technology camps, the HomePlug Alliance has recently stepped into the field of narrow-band PLC from the field of broadband home networking, pushing the Netricity PLC specification that supports the Prime and G3 dual-mode standards. It is reported that the standard mainly locks in the needs of emerging countries to upgrade from traditional power grids to smart grids, and eliminates the problem of incompatible network architectures, assists power companies and system operators in emerging countries with less technical knowledge, and accelerates the deployment of smart grid communication mechanisms .
Obviously, the importance of smart grid and micro-grid deployment has surged, and related communication technology alliances and chip vendors will benefit. As the microgrid technology matures, the system architecture will become more and more complex, such as the parallel design of multiple distributed power sources such as solar energy, wind power and fuel cells, or further integration with the smart grid to develop large-scale energy management solutions for smart cities. More semiconductor technology support is needed to detonate another wave of huge business opportunities.
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