Electricity is the most versatile and widely used form of energy and its global demand is growing continuously. However, because most of today's electrical energy generation capacity relies on fossil fuels, it is currently the largest single source of carbon dioxide emissions, making a significant contribution to climate change. In the fight against climate change, clean renewable power generation by the pulp and paper industry as well as intelligent transmission and distribution network -- Smart grid -- may have an important role to play. "Smart grid" cannot be strictly defined. It can be considered as a concept for modernizing power systems by integrating the electrical and information technologies. ABB describes Smart grid by broad characteristics rather than specific functions. So the smart grid is: 1. Automatically responding rapidly to changing conditions. 2. Interactive between customers and markets. 3. Optimized to maximize reliability, availability, efficiency and economic performance. 4. Secure from external attack and naturally occurring disruptions.
power & energy By MIKAEL INGO and KATJA RAJANIEMI Electrical energy use will keep increasing; Smart grid has been designed to integrate technology from generation to consumption BE SMART E lectricity is the most versatile and widely networks with conventional distributed and, espe- used form of energy and its global demand is cially, renewable generation units and storage con- growing continuously. However, because most nected to the consumer point. The same customer of today’s electrical energy generation capacity relies may act both as a power producer and a consumer. on fossil fuels, it is currently the largest single source This requires bi-directional power flow capability in of carbon dioxide emissions, making a significant the supply network connection point and in the other contribution to climate change. To mitigate the con- parts of the supply network, too. sequences of climate change, the current electrical With distributed intelligence and sophisticated system needs to undergo significant adjustments. information and communication technology (ICT) In the fight against climate change, clean renew- and with distributed intelligent devices (IED), more able power generation by the pulp and paper indus- can be done locally at the switchgear or even at try as well as intelligent transmission and distribution the device level, to allow operators and comput- network – Smart grid – may have an important role ing resources in the control room to operate more to play. effectively. “Smart grid” cannot be strictly defined. It can The state of the system is known and monitored be considered as a concept for modernizing power online constantly due to the increasing amount of systems by integrating the electrical and information information from the system. The system is provided technologies. The integration covers the whole sys- with controllable intelligent devices, which can tem, from generation, transmission, and distribution automatically operate to sustain the balance between to consumption. At the low voltage level the solution supply and consumption, to keep power quality on a is usually called a Microgrid. high level and to improve reliability and availability. When we speak about Smart grid, we have better ABB describes Smart grid by broad characteristics to define it by its capabilities rather than specific functions. So the and operational charac- Smart grid is: teristics than by specific Adaptive: technologies. As a rule it Automatically means increasing responding automation rapidly to
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