Development of Fault Tolerant Control System for Condensation Power Turbine

Wasiewicz, Piotr; Pawlak, M.

doi:10.1016/b978-008044485-7/50082-8

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Section: Discussionmentioning

confidence: 99%

“…In complex control systems, even in the absence of hardware redundancy, are usually a possibilities to reconfigure the automation system to avoid or to reduce the negative impact of the sensor faults on the process functioning [6,16,30,31,37,41]. The virtual sensors are most commonly used to reproduce signals from damaged sensors.…”

Section: Idea Of Fault Tolerant Control Systemsmentioning

confidence: 99%

“…An example of the control system of the condensing turbine, which tolerates the sensor faults, is described in chapter 4 [25][26][27][28]41].…”

Section: Idea Of Fault Tolerant Control Systemsmentioning

confidence: 99%

“…They include methods sciENcE aNd tEchNology based on models of objects. Such a solution has been implemented in the condensing turbine control system, in one of the national energetic blocks [29][30][31][32]41].It can be expected that in the nearest future, the rapid development of control systems equipped with software for process diagnosis and fault tolerance will take place. Also the number of industrial applications will grow in this field.…”

mentioning

confidence: 99%

“…They are not equipped with adequate diagnostic and reconfiguration software. Nowadays, FTCS applications are related to research and pilot deployments.An example of the control system of the condensing turbine, which tolerates the sensor faults, is described in chapter 4 [25][26][27][28]41]. …”

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confidence: 99%

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Method of increasing the reliability and safety of the processes through the use of fault tolerant control system

Pawlak

Kościelny

Wasiewicz

2015

EiN

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Article citation info: (*) Tekst artykułu w polskiej wersji językowej dostępny w elektronicznym wydaniu kwartalnika na stronie www.ein.org.pl PAwlAk M, kościelny JM, wAsiewicz P. Method of increasing the reliability and safety of the processes through the use of fault tolerant control systems. eksploatacja i niezawodnosc - Maintenance and Reliability 2015; 17 (3): 398-407, http://dx.doi.org/10.17531/ein.2015.3.10. Mariusz PAwlAk Jan Maciej kościelny Piotr wAsiewiczMethod of increasing the reliability and safety of the processes through the use of fault tolerant control systeMs Metoda podwyższania niezawodności i bezpieczeństwa procesów poprzez stosowanie układów regulacji tolerujących uszkodzenia* Przedstawiono ideę działania układów automatyki tolerujących uszkodzenia. Omówiono warstwy zabezpieczeniowo ochronne stosowane w diagnostyce technicznej, związanej z bezpieczeństwem układów regulacji. Jako przykład układu regulacji tolerującego uszkodzenia torów pomiarowych, opisano układ regulacji mocy turbiny parowej. Turbiny takie stanowią podstawowy element bloków energetycznych, tworzących krajowy system energetyczny. Dlatego też, od układów regulacji turbin wymaga się dużej niezawodności. W pracy określono wpływ diagnostyki i tolerowania uszkodzeń na wartości wskaźników niezawodności i bezpieczeństwa układów automatyki.Słowa kluczowe : bezpieczeństwo, diagnostyka, układ regulacji, tolerowanie uszkodzeń, redundancja, rekonfiguracja, turbina parowa, blok energetyczny, wskaźniki niezawodności. IntroductionThe control system faults are one of the main causes of breakdowns in industrial processes. According to presented by ABB data, 36% of all problems are caused by failures of control system components, including faults of sensors and actuators primarily. These devices are installed on the process installation, which creates for them difficult and variable operating conditions. Control units, installed in the control rooms, are damaged relatively rare. If we consider damages caused by control systems exclusively, then not more than 10% of them are caused by faults of control units. The others are the consequences of faults of sensors and actuators. In contrast, paradoxically different redundant solutions are developed and are commercially available primarily for any kind of controllers and computer networks.Examples of serious industrial accidents caused by damage to the measuring equipment are:Damage in the fuel storage Buncefield, on 11 December 2005. • A fault of the level sensor caused overflow of the fuel tank and ignition. Next, a series of explosions and fire of aviation fuel occurred. It was the largest fire in Europe. There were 40 injuries and substantial material damage (£ 5bn) [1]. Damage in Texas City, USA, on 23 March 2005, in the largest • oil refinery BP International. During a start-up procedure of the separator plant at the Isomerization Department, producing high octane unleaded gasoline additives, level sensors have failed. It caused the level overflow in the distillation column, resultin...

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Section: Discussionmentioning

confidence: 99%