Evaluation of parametric effect on transient stability of a multi‐unit hydroelectric generating system

Abstract Transient stability of a multi‐unit hydroelectric generating system significantly influences the safety operation of power stations. The uncertainty of operating parameter is one of the important factors to influence the system stability during the transient process. For this reason, the ta...

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Main Authors: Tianyu Yang, Diyi Chen
Format: Article
Language:English
Published: Wiley 2021-06-01
Series:IET Renewable Power Generation
Subjects:
Online Access:https://doi.org/10.1049/rpg2.12030
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author Tianyu Yang
Diyi Chen
author_facet Tianyu Yang
Diyi Chen
author_sort Tianyu Yang
collection DOAJ
description Abstract Transient stability of a multi‐unit hydroelectric generating system significantly influences the safety operation of power stations. The uncertainty of operating parameter is one of the important factors to influence the system stability during the transient process. For this reason, the target of this paper aims to explore the optimised operating parameter in order to enhance the stability of a multi‐unit hydroelectric generating system. To overcome the limitations of existing methods in literature, a new high‐dimensional, complex and non‐linear dynamic model of the multi‐unit hydroelectric generating system that combines the conventional hydro‐turbine governing system and the shaft system is established. Then, the dynamic behaviour of the proposed system targeting the transient process is exhaustingly investigated with the change of the critical parameters. The calm interval of critical parameters is also determined in order to improve the transient stability of the system. The obtained results not only enrich the theoretical knowledge of transient dynamics but also ensure the safety operation of hydropower stations. Meanwhile, the presented research method, high‐dimensional non‐linear dynamic model and the interesting findings in transient process can promote the development of the theory of non‐linear dynamics.
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spelling doaj.art-5a43bdb0c5c14ecb8627819c41bcd9522023-02-27T08:26:29ZengWileyIET Renewable Power Generation1752-14161752-14242021-06-011581624163110.1049/rpg2.12030Evaluation of parametric effect on transient stability of a multi‐unit hydroelectric generating systemTianyu Yang0Diyi Chen1Institute of Water Resources and Hydropower Research Northwest A&F University Yangling Shaanxi ChinaInstitute of Water Resources and Hydropower Research Northwest A&F University Yangling Shaanxi ChinaAbstract Transient stability of a multi‐unit hydroelectric generating system significantly influences the safety operation of power stations. The uncertainty of operating parameter is one of the important factors to influence the system stability during the transient process. For this reason, the target of this paper aims to explore the optimised operating parameter in order to enhance the stability of a multi‐unit hydroelectric generating system. To overcome the limitations of existing methods in literature, a new high‐dimensional, complex and non‐linear dynamic model of the multi‐unit hydroelectric generating system that combines the conventional hydro‐turbine governing system and the shaft system is established. Then, the dynamic behaviour of the proposed system targeting the transient process is exhaustingly investigated with the change of the critical parameters. The calm interval of critical parameters is also determined in order to improve the transient stability of the system. The obtained results not only enrich the theoretical knowledge of transient dynamics but also ensure the safety operation of hydropower stations. Meanwhile, the presented research method, high‐dimensional non‐linear dynamic model and the interesting findings in transient process can promote the development of the theory of non‐linear dynamics.https://doi.org/10.1049/rpg2.12030Hydroelectric power stations and plantsControl of electric power systemsMechanical components
spellingShingle Tianyu Yang
Diyi Chen
Evaluation of parametric effect on transient stability of a multi‐unit hydroelectric generating system
IET Renewable Power Generation
Hydroelectric power stations and plants
Control of electric power systems
Mechanical components
title Evaluation of parametric effect on transient stability of a multi‐unit hydroelectric generating system
title_full Evaluation of parametric effect on transient stability of a multi‐unit hydroelectric generating system
title_fullStr Evaluation of parametric effect on transient stability of a multi‐unit hydroelectric generating system
title_full_unstemmed Evaluation of parametric effect on transient stability of a multi‐unit hydroelectric generating system
title_short Evaluation of parametric effect on transient stability of a multi‐unit hydroelectric generating system
title_sort evaluation of parametric effect on transient stability of a multi unit hydroelectric generating system
topic Hydroelectric power stations and plants
Control of electric power systems
Mechanical components
url https://doi.org/10.1049/rpg2.12030
work_keys_str_mv AT tianyuyang evaluationofparametriceffectontransientstabilityofamultiunithydroelectricgeneratingsystem
AT diyichen evaluationofparametriceffectontransientstabilityofamultiunithydroelectricgeneratingsystem