Emergency power systemAn emergency power system is an independent source of electrical power that supports important electrical systems on loss of normal power supply. A standby power system may include a standby generator, batteries and other apparatus. Emergency power systems are installed to protect life and property from the consequences of loss of primary electric power supply. It is a type of continual power system. They find uses in a wide variety of settings from homes to hospitals, scientific laboratories, data centers, telecommunication equipment and ships.
Suivi de chargeLe suivi de charge est, dans le domaine de la production d'électricité, la pratique qui consiste à faire varier la puissance de fonctionnement d'une centrale de façon à l'adapter aux variations de la demande des consommateurs : la centrale « suit » la charge, c'est-à-dire l'appel de puissance causé par la demande. Les centrales qui ont la capacité d'effectuer des suivis de charge sont dites pilotables, c'est-à-dire modulables ou dispatchables. Le centre de contrôle qui pilote ces centrales pour réaliser l'ajustement offre-demande d'électricité est appelé dispatching.
Power-system automationPower-system automation is the act of automatically controlling the power system via instrumentation and control devices. Substation automation refers to using data from Intelligent electronic devices (IED), control and automation capabilities within the substation, and control commands from remote users to control power-system devices. Since full substation automation relies on substation integration, the terms are often used interchangeably. Power-system automation includes processes associated with generation and delivery of power.
Base loadThe base load (also baseload) is the minimum level of demand on an electrical grid over a span of time, for example, one week. This demand can be met by unvarying power plants, dispatchable generation, or by a collection of smaller intermittent energy sources, depending on which approach has the best mix of cost, availability and reliability in any particular market. The remainder of demand, varying throughout a day, is met by dispatchable generation which can be turned up or down quickly, such as load following power plants, peaking power plants, or energy storage.
Battery storage power stationA battery storage power station is a type of energy storage power station that uses a group of batteries to store electrical energy. Battery storage is the fastest responding dispatchable source of power on electric grids, and it is used to stabilise those grids, as battery storage can transition from standby to full power in under a second to deal with grid contingencies. Battery storage power stations are generally designed to be able to output at their full rated power for several hours.
Renewable energy commercializationRenewable energy commercialization involves the deployment of three generations of renewable energy technologies dating back more than 100 years. First-generation technologies, which are already mature and economically competitive, include biomass, hydroelectricity, geothermal power and heat. Second-generation technologies are market-ready and are being deployed at the present time; they include solar heating, photovoltaics, wind power, solar thermal power stations, and modern forms of bioenergy.
Flywheel energy storageFlywheel energy storage (FES) works by accelerating a rotor (flywheel) to a very high speed and maintaining the energy in the system as rotational energy. When energy is extracted from the system, the flywheel's rotational speed is reduced as a consequence of the principle of conservation of energy; adding energy to the system correspondingly results in an increase in the speed of the flywheel. Most FES systems use electricity to accelerate and decelerate the flywheel, but devices that directly use mechanical energy are being developed.
Puissance nominaleLa puissance nominale, dans l'industrie de l'électricité, est, pour un générateur d'une unité de production électrique, la puissance maximale qu’il peut fournir, de manière permanente sur le réseau ; c’est aussi, pour un récepteur électrique, la puissance électrique consommée dans des conditions normales. La puissance est exprimée en watts dans le Système international. L'association d'opérateurs de centrales électriques VGB Powertech définit la puissance nominale d'une unité de production électrique comme .
Transmission congestionElectricity transmission congestion is a condition of the electrical grid that prevents the accepted or forecasted load schedules from being implemented due to the grid configuration and equipment performance limitations. In simple terms, congestion occurs when overloaded transmission lines are unable to carry additional electricity flow due to the risk of overheating and the transmission system operator (TSO) has to direct the providers to adjust their dispatch levels to accommodate the constraint or in an electricity market a power plant can produce electricity at a competitive price but cannot transmit the power to a willing buyer.
Système hybride d'énergievignette| Premier système d'alimentation hybride. Le moteur à essence/kérosène entraîne la dynamo qui charge la batterie de stockage . Un système d'alimentation hybride, ou un système hybride d'énergie, est un dispositif combinant différentes technologies pour produire de l'énergie. En génie électrique, le terme « hybride » décrit un système combiné de stockage d'électricité et d'énergie. Le photovoltaïque, l'éolien et divers types de générateurs comme les groupes électrogènes diesel sont typiquement associés pour produire de l'électricité dans une centrale hybride.
