Providing fault ride-through capability of turbo-expander in a thermal power plant
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Authors
Date
2019-10-28
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Mcode
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Language
en
Pages
19
Series
Energies, Volume 12, issue 21
Abstract
This paper aims to make possible the operation of a turbo-expander (TE) as a renewable resource at the Neka power plant in fault condition in the auxiliary service system (ASS), which is considered one of the fundamental problems in network operation. In this paper, the effect of the failure on the performance of the TE is analyzed whilst the performance of a dynamic voltage restorer (DVR) and static synchronous compensator (STATCOM) to compensate the fault in the ASS network is investigated. To improve the performance of DVR, a novel topology is developed; additionally, the compensatory strategies are assessed, simulated, and validated. In order to optimize the performance of the compensators, their possible presence situations on the ASS in various scenarios under the conditions of severe disturbance, synchronization of fault conditions, and starting of TE are tested. The results of PSCAD/EMTDC software simulation demonstrate that by applying the improved topology and selected compensation strategy of DVR, severe voltage sags are compensated, and the fault ride-through (FRT) capability for the TE is provided. Eventually, it is evident that the proposed solution is technically and economically feasible and the TE can supply the total ASS power consumption in all disturbances.Description
Keywords
Auxiliary service system (ASS), Dynamic voltage restorer (DVR), Fault ride-through capability, Static synchronous compensator (STATCOM), Turbo-expander
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Citation
Norouzi , M & Lehtonen , M 2019 , ' Providing fault ride-through capability of turbo-expander in a thermal power plant ' , Energies , vol. 12 , no. 21 , 4113 . https://doi.org/10.3390/en12214113