The smart grid is widely regarded as a digital self-healing energy system, delivering electricity or gas generated by energy including renewable energy to consumption points. They can optimize power transmission, promote two-way communication within the grid, support end-user energy management, minimize power interruptions, and deliver only the amount of power needed. This helps reduce the cost of power companies and users, improve the reliability of power supply and reduce carbon emissions.
There are many reasons why smart grids attract so much attention and investment. Strengthen the existing power grid by increasing the level of intelligence and digital communications:
Improved reliability and power quality
Increased response speed
Increased efficiency
Meet current and future needs
Can reduce the cost of suppliers and users
Provide a communication platform for new applications
Smart grid is particularly suitable for 4 major areas:
Smart meter
Building automation
Electric travel
Renewable Energy
All of these are functionally connected by high-level subsystems, including power conversion modules, communication protocols, and energy storage systems.
As the world's leading semiconductor manufacturer, STMicroelectronics has actively participated in the development of smart grid technology, products and applications from the beginning, providing a large number of products that meet the needs of smart grids.
Smart Grid Application (HAN)
The ICT (Information and Communication Technology) infrastructure in the home, also known as the Home Network (HAN), enables intelligent management of all digital devices in the home. HAN can use several connection technologies related to specific subsystems in the home system-wired and wireless.
Typical HAN subsystems include PC networks, HVAC systems, and alarm / security systems, as well as new subsystems related to emerging smart grid applications, such as energy management systems, local alternative energy power generation systems (such as photovoltaics), and automotive-grid systems.
The HAN infrastructure can be open and must be connected to the AMI (Automated Metering Infrastructure) and the Internet through a home gateway in order to achieve high-end services.
STMicroelectronics has launched high-efficiency products for HAN applications, designed to meet new market requirements. ST's advanced technology and expertise are particularly suitable for wired (PLM and Ethernet) and wireless communication technologies.
We provide a large number of components and evaluation boards for reference for HAN applications. The scope of the solution includes smart sockets, smart energy meters, home displays and home gateways.
Plug-in hybrid electric vehicle (charger) and electric vehicle charging system
Plug-in HEVs or pure EVs use on-board battery chargers to charge high-voltage batteries, so new converters must now be installed in cars. The converter can have different power levels, input voltage and output voltage specifications, but it usually includes a PFC part and a DC / DC part. The two stages and components that may be used are shown below.
Smart plug
Smart plug is a system solution for home area network to realize energy management and energy saving.
It allows us to monitor energy consumption and electrical parameters, prevent overloading of the power network, and also enables remote load management via wireless HAN.
Through the home / building RF network, the current, power, energy and other information related to the electrical load connected to the smart plug system is sent to the IEEE-802.15.4 data concentrator.
Power consumption display / power gateway
In the era of focusing on energy consumption optimization and measurement, people need to have a clearer understanding of energy consumption measurement and energy management in their homes. To this end, STMicroelectronics has introduced a system that allows them to detect and manage household energy consumption, and can publish energy consumption data to remote network servers through home automation devices (such as smart sockets). No matter where they are, users can query the energy consumption data on the network server and manage the entire system through the touch panel.
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