Razvoj senzorja za zaznavanje in karakterizacijo udarov strel

JEZERŠEK, MATIC (author), Žemva, Andrej (mentor)

V pričujočem delu je predstavljen razvoj senzorja podjetja Raycap / Iskra Zaščite imenovanega ProLEC Wind Advanced. Raziskave kažejo, da na možnosti za poškodbe vetrnih elektrarn ob udaru strele vplivajo različne karakteristike udarov in prav vzorčenje celotnega tokovnega udara ter njegova karakterizacija je naloga, ki jo novi senzor rešuje. Na podlagi podatkov, pridobljenih z novim senzorjem, lahko vzdrževalci bolje načrtujejo in izvajajo vzdrževalna dela ter tako zagotovijo kar najbolj ekonomično obratovanje elektrarn. Udari strel so zelo hitri in kratkotrajni pojavi, kar, skupaj z zahtevami po dolgi življenjski dobi in baterijskim obratovanjem senzorja, narekuje poseben pristop k reševanju problema. Konkretno se je za primerno rešitev izkazala kombinacija mikrokrmilnika in programirljivega logičnega vezja. Bralec bo ob branju magistrskega dela spoznal fizikalno ozadje atmosferskih razelektritev, delovanje vetrnih elektrarn in poškodb, ki nastanejo zaradi udara strel, ter dobil vpogled v ozadje razvoja senzorja in uporabljenih rešitev. Avtor je bil vpet v celoten proces razvoja, njegovo področje dela pa je bilo programiranje programirljivega logičnega vezja, mikrokrmilnika in demonstracijskega programa v okolju LabVIEW – ti segmenti so v delu predstavljeni posebej podrobno.

• Language: Slovenian
• Keywords: števec, senzor, zaznavanje, karakterizacija, strele, prenapetosti, logično vezje, CPLD, VHDL, mikrokrmilnik, LabVIEW
• Work type: Master's thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2018
• PID: 20.500.12556/RUL-100217
• Publication date in RUL: 16.03.2018

Secondary language

• Language: English
• Title: Development of sensor for detection and characterization of lightning strikes

Abstract

This master’s thesis presents the development of Raycap / Iskra zaščcite sensor named ProLEC Wind Advanced. Research shows that the damage caused by lightning strikes to wind turbines depends on different strike characteristics. Sampling and characterization of a lightning strike is the task that the new sensor solves. Based on the data acquired by the new sensor, maintenance planning can be optimized to enable less down-time and consequently bring a bigger revenue. Lightning strikes are very quick and short events. Therefore a non-standard problem solving approach is required in meeting the needs of sensors’ long batterylife. The proposed solution is a symbiosis of a microcontroller and a reprogrammable logic device. The aim of this paper is to present the reader the physical background of atmospheric discharges, wind turbine operation, damage that can occur due to lightning strikes, and development of an advanced lightning strike sensor and the solutions used. Author of the thesis was comprehensively involved in the whole development process with special focus on the programming of the reprogrammable logic device, microcontroller and demonstration software. These topics are presented in more detail.

• Keywords: counter, sensor, detection, characterization, lightning, surge, logic device, CPLD, VHDL, microcontroller, LabVIEW