Smart grids transform that approach by enabling both information and electricity to travel simultaneously between power plants and consumers.
At its heart lies two-way communications and a distributed system of intelligent devices – these allow grid operators to monitor its performance on various time scales – from microsecond switching device actions, all the way up to solar/wind output variations on an hourly basis.
Real-time Monitoring
Real-time monitoring provides vital data to help DSOs and TSOs manage energy efficiently and reduce costs. Smart grid technologies enable these entities to track performance across their networks accurately while responding quickly and precisely to fluctuations in demand.
Sensors monitor a range of physical parameters in power generation, transmission lines, substations, distribution systems and end user devices. Sensors can detect irregular voltage patterns, pre-failure signatures, theft as well as dangerous situations like tree branches too close to overhead lines.
Dynamic line rating technology enables sensors to predict real-time current-carrying capacity for improved grid operations and reliability, enabling utilities to proactively schedule maintenance and repairs as required, thus improving energy efficiency while decreasing downtime. Furthermore, dynamic line rating enables suppliers to develop pricing strategies based on daily electricity demand that encourage customers to shift consumption away from peak hours – thus further cutting costs and CO2 emissions.
Smart Metering
A smart grid goes beyond traditional energy supply infrastructure such as sensors and monitoring technology, to incorporate modern digital tools such as two-way communications between power providers and customers for improved operation and management.
One of the key components of a smart grid is its power meter, which communicates directly with your utility company via an electronic network to make outage detection, billing and data collection much simpler and quicker.
Smart meters monitor electricity use almost in real-time (usually half hourly) and send this data automatically to their suppliers. This enables utilities to offer “time of use” tariffs that allow consumers to lower consumption during peak demand periods in order to save money on energy bills.
Smart meters can also be integrated with other smart grid technologies, like programmable communicating thermostats and in-home displays, for more sophisticated energy control. For instance, they may automatically disconnect customer devices when power prices rise too rapidly – helping ease stress on the grid and reducing its need for backup fossil fuel generation or new infrastructure such as pylons.
Smart Grid Integration
Smart grids must respond quickly to consumer energy usage changes, making smart grids highly responsive. By offering two-way power and data flows, these grids are better able to address changes in energy use as well as quickly detect and resolve incidents should any arise.
Smart grids contain sensors to measure voltage and current parameters, two-way communications to permit two-way dialogue with devices, control systems for reconfiguring, as well as smart relays that can transfer excessive current from an overloaded line to one with less load so as to balance out load distribution between lines.
Smart grids make it possible for decentralized power production installations such as wind turbines, solar panels, small hydroelectric dams and residential photovoltaic systems to connect directly to the grid – wind turbines, solar panels, small hydroelectric dams and residential photovoltaic systems among them – which allows smart grids to support this trend by integrating such decentralized systems more seamlessly with conventional power plants and helping reduce dependence upon traditional centralized plants.
Smart Energy Management
The electricity system must strike an equilibrium between supply and demand in order to operate effectively, or else its frequency might exceed what some power plants can handle and disconnect them from the grid. Smart grid technology makes this balance possible.
Smart grid technologies play an integral part in helping us move to renewable energy sources. They make it easier for consumers to manage their electricity usage; for example, scheduling appliances during off-peak hours allows both homeowners and businesses to save money on energy costs.
Smart grids rely on sensors that measure temperature, voltage and current; communications that enable two-way dialogue with devices; and control systems to act upon this information – as the foundation. Additional key technologies include metering and meter reading systems; wide area monitoring technology (based on online readings by Distributed Temperature Sensing combined with Real time thermal rating systems), electromagnetic signature measurement/analysis techniques like backscatter radio technology as well as digital protective relays – the list goes on!