Fault mechanisms and diagnosis methods for typical load mutation problems of turbo-generator sets

Since flexible peak shaving has been implemented in a growing number of high-power turbo-generator sets in the power grid owing to increasing demand, the load control performance of steam turbines directly affects the safety and efficiency of the unit operation. Load-following issues, especially loa...

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Main Authors: Kun Yao, Ying Wang, Shuangshuang Fan, Jie Wan, Henggang Wu, Yong Cao
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-09-01
Series:Frontiers in Energy Research
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fenrg.2022.981598/full
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author Kun Yao
Ying Wang
Shuangshuang Fan
Jie Wan
Henggang Wu
Yong Cao
author_facet Kun Yao
Ying Wang
Shuangshuang Fan
Jie Wan
Henggang Wu
Yong Cao
author_sort Kun Yao
collection DOAJ
description Since flexible peak shaving has been implemented in a growing number of high-power turbo-generator sets in the power grid owing to increasing demand, the load control performance of steam turbines directly affects the safety and efficiency of the unit operation. Load-following issues, especially load mutation, weaken the frequency control performance of the unit and cause load fluctuation faults, threatening power grid safety and stability. However, the definition, classification, characterization, generation mechanism, and diagnostic methods for load mutation problems have not been systematically researched. Based on the operational data of various turbo-generator set cases, this study systematically assessed three typical load mutation problems; namely, the common fault of unreasonable parameter settings of the control system as well as new-found faults in the actuator hardware and electrical interference. Subsequently, the fault mechanisms and characterization parameters of the different set capacities were analyzed and extracted. Furthermore, a diagnosis method was designed according to the actual problem, based on which fault type was identified. Case analysis of typical sets demonstrated that this method can quickly test and diagnose faults when in actual real-world scenarios and effectively determine the cause of the fault. This method can also detect the initial fault features, which is convenient for daily maintenance and avoids fault aggravation.
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spelling doaj.art-9658713482d84fcd95ad084ca79641132022-12-22T04:25:23ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2022-09-011010.3389/fenrg.2022.981598981598Fault mechanisms and diagnosis methods for typical load mutation problems of turbo-generator setsKun Yao0Ying Wang1Shuangshuang Fan2Jie Wan3Henggang Wu4Yong Cao5Harbin Institute of Technology, Shenzhen, Shenzhen, ChinaHarbin Engineering University, Harbin, ChinaHarbin Institute of Technology, Harbin, ChinaHarbin Institute of Technology, Harbin, ChinaZhejiang Energy Technology Research Institute Co, Ltd., Hangzhou, ChinaHarbin Institute of Technology, Shenzhen, Shenzhen, ChinaSince flexible peak shaving has been implemented in a growing number of high-power turbo-generator sets in the power grid owing to increasing demand, the load control performance of steam turbines directly affects the safety and efficiency of the unit operation. Load-following issues, especially load mutation, weaken the frequency control performance of the unit and cause load fluctuation faults, threatening power grid safety and stability. However, the definition, classification, characterization, generation mechanism, and diagnostic methods for load mutation problems have not been systematically researched. Based on the operational data of various turbo-generator set cases, this study systematically assessed three typical load mutation problems; namely, the common fault of unreasonable parameter settings of the control system as well as new-found faults in the actuator hardware and electrical interference. Subsequently, the fault mechanisms and characterization parameters of the different set capacities were analyzed and extracted. Furthermore, a diagnosis method was designed according to the actual problem, based on which fault type was identified. Case analysis of typical sets demonstrated that this method can quickly test and diagnose faults when in actual real-world scenarios and effectively determine the cause of the fault. This method can also detect the initial fault features, which is convenient for daily maintenance and avoids fault aggravation.https://www.frontiersin.org/articles/10.3389/fenrg.2022.981598/fullsteam turbineload mutationload oscillationgoverning valveelectrical interferenceactuator hardware failure
spellingShingle Kun Yao
Ying Wang
Shuangshuang Fan
Jie Wan
Henggang Wu
Yong Cao
Fault mechanisms and diagnosis methods for typical load mutation problems of turbo-generator sets
Frontiers in Energy Research
steam turbine
load mutation
load oscillation
governing valve
electrical interference
actuator hardware failure
title Fault mechanisms and diagnosis methods for typical load mutation problems of turbo-generator sets
title_full Fault mechanisms and diagnosis methods for typical load mutation problems of turbo-generator sets
title_fullStr Fault mechanisms and diagnosis methods for typical load mutation problems of turbo-generator sets
title_full_unstemmed Fault mechanisms and diagnosis methods for typical load mutation problems of turbo-generator sets
title_short Fault mechanisms and diagnosis methods for typical load mutation problems of turbo-generator sets
title_sort fault mechanisms and diagnosis methods for typical load mutation problems of turbo generator sets
topic steam turbine
load mutation
load oscillation
governing valve
electrical interference
actuator hardware failure
url https://www.frontiersin.org/articles/10.3389/fenrg.2022.981598/full
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AT jiewan faultmechanismsanddiagnosismethodsfortypicalloadmutationproblemsofturbogeneratorsets
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