Diagnostika energetických zařízení paroplynového bloku ve Vřesové

| Kategorie: Diplomové, bakalářské práce  |

Chce-li být podnik prosperující v tržním hospodárství musí poskytovat konkurence schopné produkty a služby. V našem prípade se jedná prevážne o elektroenergii (výkonovou hladinu, certifikované služby – primární, sekundární potažmo terciální regulace). Havárie zarízení (bloku) prináší velké ekonomické ztráty podniku, jelikož smlouvy uzavírané v elektroenergetice bývají dlouhodobé a jejich nedodržení je striktne penalizováno. Z techto duvodu se do popredí provozování zarízení dostává otázka spolehlivosti, která je vždy kompromisem s ekonomickou otázkou ...

Vydal: Západočeská univerzita v Plzni Autor: Václav Mareška

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New detection gases that are components of lignite gas and nature gas, means and CH4, presented upgraded diagnostic system. There has not been any accident with gear since installation this diagnostic system. Author prospectively advises to involve prediction system into control system. Thesis familiarizes with existing diagnostic systems CCPP Vresova and is seeking for solutions when there store present diagnostic access information processing. First them is suggestion diagnostic system for accessory gear including prediction system. Combustion spare parts were found extremely good condition during combustion inspection that was made after mentioned yearlong operation. This part should help for perfection operation effectiveness. . this context realised measurements and corresponding system were very effective. Diagnostic methods are widely extended for appreciation quality of equipments. Control systems for particular equipments are summarized, well as off-line diagnostic methods. New system was operating first unit for one year normal commercial operation without significant problems, other words the system able compete. Periodical and continual measurements are unavoidable when equipment is installed site (especially for large machines). Increasing requirements service life and reliability electrical machines can realized only with use modern diagnostic systems and methods. Third chapter describes diagnostic system that is currently used CCPP Vresova. The main concern of this part combustion lignite gas and corresponding operation stages complete system. New signals are divided proper levels, and system shows corresponding alarms the operator for particular levels, automatically performing safety sequences. Solution for burning fuel nozzles primary manifold found sufficient cooling of nozzles during all operation stages. Introductory chapter familiarizes diagnostics and diagnostic systems. Second chapter deals the thermodynamic of Combined Cycles. this context realised innovations were very effective and due to this fact money were saved since there not necessary upgrade fuel nozzles (what brings additional costs due exchanging combustion section), and since costs for refurbishment combustion spare parts are lower. This part should help the persons concerned with designing new diagnostic systems. First three chapters are written the nature of theoretical introduction the questions Combined Cycle Power Plants and diagnostics. Second particular issue undertakes CCPP from safety viewpoint. Next, detection responsive burning hydrogen gas introduced gas turbine compartment. The same holds for the fuel nozzles primary manifold. concerns with fractionation diagnostic systems, with diagnostic simulations and with mathematical predication conditions diagnosed object.ABSTRACT The effectiveness diagnostics electrical machines and warning diagnostics especially has been confirmed more and more. The reason for is, that they enable detect inception prospective defects systems time and due this fact they help prevent from accidents. Diagnostic system for accessory gear like part gas turbine control system introduced one unit. Diagnostic system fragmented accordance with introductory chapter. Signals that describe system are selected after initial measurements. Thesis divided into several chapters. Thesis deals the solution for two problems after initiative chapters. describes fundamental principle Combined Cycles and shows ways leading the enhancement efficiency and reliability CC