English Glossary
Since 02.06.2017
Browse the glossary using this index
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UASBupflow anaerobic sludge blanket | |
ultravioletElectromagnetic radiation with shorter wavelengths than visible light. Wavelengths of UV light range from approximately 10 nm to 400 nm. Because of the short wavelengths, UV light carries higher levels of energy per photon than infrared light or visible light. When speaking about solar cells, UV light is commonly referred to as ‘blue light’. | |
ultravioletaRadiación electromagnética con longitudes de onda más cortas que las de la luz visible. Las longitudes de onda de la luz UV van desde aproximadamente 10 nm a 400 nm. Debido a las longitudes de onda más cortas, la luz UV porta niveles más bajos de energía por fotón que la luz infrarroja o la visible. Al hablar de celdas solares, la luz UV se denomina comúnmente 'luz azul'. | |
UMPPUltra Mega Power Project | |
UNUnited Nations | |
underexcitedDescribes the state of a generating plant when the plant voltage is less than the network voltage at the POC. In this state the plant current leads the network voltage and the plant absorbs reactive power from the network. | |
UNDPUnited Nations Development Programme | |
UNEPUnited Nations Environment Programme | |
UNFCCCUnited Nations Framework Convention on Climate Change | |
unidad terminal remotaUn dispositivo electrónico controlado con un microprocesador que interrelaciona objetos en el mundo físico con un sistema de control distribuido o sistema SCADA (Supervisión, Control y Adquisición de Datos) al transmitir datos telemétricos a un sistema maestro, y al usar mensajes del sistema maestro de supervisión para controlar objetos conectados. En sistemas FV de gran porte, se puede usar para comunicación remota entre el sistema FV y la red eléctrica; puede transmitir información de estado como la producción real de energía y recibir comandos de control para los inversores para reducir la potencia de salida o activar la potencia reactiva. | |
unidirectional power flowPower flow in only one direction. | |
Upinternal voltage (synchronous generator) | |
upflow anaerobic sludge blanketA form of anaerobic digester that is used for wastewater treatment and uses an anaerobic process whilst forming a blanket of granular sludge which suspends in the tank. Wastewater (liquids with relaitvely low organic loads) flows upwards through the blanket and is processed (degraded) by the anaerobic microorganisms. | |
upstreamIn the higher part of a stream, closer to its source | |
USAIDUS Agency for International Development | |
useful energyEnergy that can be used to perform a certain task, as opposed to total energy generated (some of which may not be capable of being used, such as waste heat). | |
userEverybody that makes use of a power system, such as generators, consumers, network operators | |
usuarioTodo aquél que hace uso de un sistema eléctrico, tales como generadores, consumidores, operadores de red. | |
Utterminal voltage | |