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Verfahren zum Ausrichten der Heliostate eines Heliostatfeldes

Method for aligning heliostats of heliostat field in solar tower power plant, involves controlling actuating devices of heliostat using processor such that heliostat assumes alignment intended according to solar altitude
 
: Hoffschmidt, B.; Goettsche, J.; Sauerborn, M.; Essen, H.; Luedtke, G.; Biegel, G.

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Frontpage ()

DE 102009032584 A: 20090710
DE 102009032584 A: 20090710
F24J0002
German
Patent, Electronic Publication
Fraunhofer FKIE

Abstract
(A1) Zur Ermittlung der Einstellungen der Heliostaten (12) eines Heliostatfeldes (10) wird eine zentrale Entfernungsmesseinrichtung (20) benutzt, die auf die Heliostaten gerichtet werden kann. Die Entfernungsmesseinrichtung misst den Abstand von mehreren Messstellen (26a, 26b, 26c) vom Messort (MO) und bestimmt daraus die raeumliche Ausrichtung des betreffenden Heliostaten. Ein Rechner (25) enthaelt eine astronomische Sonnenstandssoftware und steuert eine Stelleinrichtung (15, 16) des Heliostaten so, dass dieser die entsprechend dem Sonnenstand vorgesehene Ausrichtung einnimmt. Mit der Erfindung werden Positionssensoren bzw. Winkelsensoren an den einzelnen Heliostaten vermieden. Die Ausrichtung saemtlicher Heliostaten erfolgt durch einen zentralen Rechner.

 

WO 2011004022 A1 UPAB: 20110207 NOVELTY - The method involves determining setting of heliostats (12) in a heliostat filed (10) using a central distance measuring device (20), where the measuring device is directed at the heliostats. The distances between respective measuring points (26a-26c) and a measuring site (MO) are measured using the distance measuring device. The spatial alignment of the respective heliostat is determined based on the measured distances. Actuating devices of the heliostat are controlled using a processor (25) such that the heliostat assumes the alignment intended according to a solar altitude. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a heliostat field comprising heliostats. USE - Method for aligning heliostats of a heliostat field (claimed) in a solar tower power plant. ADVANTAGE - The spatial alignment of the respective heliostat is determined based on the measured distances, and the actuating devices of the heliostat are controlled using the processor such that the heliostat assumes the alignment intended according to the solar altitude, so that the sensory effect for determining the actual orientation of the individual heliostats is reduced without requiring position sensors and/or angle sensors on the individual heliostats, thus enabling installation and maintenance of heliostats with less labor. The method eliminates the need of personnel-consuming individual installing encoders and makes the field measurement technique independent of the heliostat type, so that different types of mirrors can be utilized in the same field.

: http://publica.fraunhofer.de/documents/N-159183.html