Diagnostyka procesu sterowania instalacją pozyskiwania energii słonecznej

• Autorzy: Nikodem J. , Klempous R. , Nikodem M. , Berenguel M.

Warianty tytułu

EN

Diagnostics of a distribited solar collector field control process

• Języki publikacji: PL

Abstrakty

PL

W pracy opisano instalację kolektorów rynnowych ACUREX pozyskujących energię bezpośredniego promieniowania słonecznego. Omówiono zastosowaną metodę śledzenia pozycji słońca na niebie oraz zasady leżące u podstaw sterowania przepływem w celu utrzymania właściwej temperatury wyjściowej oleju syntetycznego. Na podstawie modelu matematycznego instalacji o stałych skupionych, zaproponowano model symulacyjny . obiektu oraz model odwrotny, pomocny w procesie sterowania. Zbudowano model symulacyjny sterowania za pomocą regulatora PID oraz sprzężenia zwrotnego do przodu (feedfoward).

EN

The purpose of this work is to analyse methods and algorithms to control the ACUREX solar collectors field of the Plataforma Solar de Almeria. This solar thermal system is based in parabolic trough technology, Parabolic trough collectors arc solar concentrating devices. They are made up of a parabolic trough-shaped mirrors that reflects and concentrates direct solar radiation onto a receiver tube located in the focal line of the parabola. The concentrated radiation heats a fluid flowing through the receiver tube, thus transforming the solar radiation into thermal energy in the form of the sensible heat of the fluid. The heated oil is stored in an oil tank. This single tank serves not only as feed lank, transferring oil from the power block to the solar field, but also as thermal energy storage system. Hot and cold oil can be stored in the same tank because density of oil used change a lot with the temperature and hot oil remains always in the upper levels of the tank because its density is much lower than that of cold oil. Traditionally, as the energy source in this system can not be manipulated, the way of .controlling this system is by mean of manipulation of the oil flow through the solar field in order to achieve a desired oil temperature level at the .outlet of the solar field. Due to diagnostic purpose we built and tested necessary models using the data related to performance of various control algorithms observed under changing environmental conditions on real installation. As a result of analysis we proposed both structure and algorithm of control system modifications related to flow control and sun tracking methods.

Słowa kluczowe

PL

układy pozyskiwania energii słonecznej; modelowanie instalacji słonecznych; diagnostyka układów sterowania

EN

solar plant control; solar collectore modelling; control systems diagnostic

• Wydawca: Wydawnictwo PAK
• Czasopismo: Pomiary Automatyka Kontrola
• Rocznik: 2005
• Tom: R. 51, nr 9 bis
• Strony: 213--216
• Opis fizyczny: Bibliogr. 14 poz., rys., schem., wzory

Twórcy

autor

Nikodem J.

• Politechnika Wrocławska, Instytut Cybernetyki Technicznej

autor

Klempous R.

• Politechnika Wrocławska, Instytut Cybernetyki Technicznej

autor

Nikodem M.

• Politechnika Wrocławska, Instytut Cybernetyki Technicznej

autor

Berenguel M.

• University of Almeria, Dept. Lenguajes Computation, Spain

Bibliografia

• [1] ACUREX field D. A. S. and Control System, Documentation version 2001, Platforma Solar de Almería, Almería, Spain 2001.
• [2] Camacho E. F., Rubio F. R., Hughes M., Self-tuning control of a solar power plant with a distributed collector field. IEEE Control Systems Magazine, pp. 72-78, 1992.
• [3] Camacho E. F., Berenguel M., Rubio F. R., Advanced control of solar plants. Series: Advances in Industrial Control, Springer-Verlag, London 1997.
• [4] Carmena R.; Análisis, modelado y control de un campo de colectores solares distribuidos con sistema de seguimiento en un eje, PhD thesis, Universidad de Sevilla 1985.
• [5] Dorf R., Bishop R.: A modern control systems. Addison-Wesley Longman Inc.. Menlo Park CA 1998.
• [6] Farkas I., Vajk I.; Experiments with internal model-based controller for Acurex field, HIP Programme, Proceedings of the 2-nd Users Workshop, Almeria, Spain 2002.
• [7] Johansen T., Storaa C.; An internal controller tor distributed solar collector fields, IMP Programme, Proceedings of the 2-nd Users Workshop. Almeria, Spain, 2002.
• [8] Pereira C., Dourado A.; Application of a neuro-fuzzy network with support vector learning to a solar power plant. IHP Program, Proceedings of the 2nd Users Workshop, Almería, Spain, 2002.
• [9] Silva R., Rato M., Lemos J.: Observer based time wrapped control of distributed collector solar fields. IHP Program, Proceedings of the 2nd Users Workshop, Almería, Spain, 2002.
• [10] Smolec W.; Fototermiczna konwersja energii słonecznej, Wydawnictwo Naukowe PWN, Warszawa 2000.
• [11] Solar thermal electricity generation. Lectures from the summer school at the P. S. A. 13-17 July 1998, Almeria, Spain.
• [12] Valenzuela L., Balsa P.: A series and parallel feedfoward control schemes to regulate the operation of a solar collector field, Serie Ponencias, Proceedings of the 1st Users Workshops Almería, Spain, 1997.
• [13] Vaz F., Oliviera R., Neves de Silva R.: PID control of a solar plant with gain interpolation. Serie Ponencias, Proceedings of the 1st Users Workshop, Almería, Spain. 1997.
• [14] Zarza E. et al., The DISS Project: Direct Steam Generation in Parabolic Trough Systems. Operation and Maintenance Experience and Update on Project Status. Journal of Solar Energy Enginncring Transactions of the ASME. Vol. 124, Issue 2, pp. 126-133. May 2002.

Uwagi

Improving Human Potential Programme. Access to Research Infrastructures Activity. Platforma Solar de Almeria: The European Solsr Thermal Test Centre