Reliability survey of 600 to 1800 kW diesel and gas-turbine generating units

Smith, Charles A.; Donovan, Matt; Bartoš, Michal

doi:10.1109/28.56002

Cited by 22 publications

(7 citation statements)

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“…The MTTF estimate of 580 hours aligns well with the Smith, Donovan, & Bartos (1990) analysis of backup power systems at commercial and military facilities, which estimated an MTTF of 545 hours for standby packaged diesel generators and an MTTF of 457 hours for all standby diesel generators. 8 While Schroeder (2018) is a larger data set that also provides data on FTS and generator unavailability, the Smith, Donovan, & Bartos data set provides useful additional data, because the generator sizes analyzed (between 600-kW and 1800-kW systems) are closer to the sizes of backup generators found in most commercial systems.…”

Section: Failure To Run (Ftr)supporting

confidence: 78%

“…Malfunctioning components are more likely to be identified and replaced in generators that are run frequently, and many causes of FTS, such as fuel degradation, are mitigated by frequent generator operation. Generators that are run to provide grid services in addition to backup power are therefore likely to be more reliable than generators used exclusively for backup power (Smith, Donovan, & Bartos, 1990).…”

Section: Failure To Start (Fts)mentioning

confidence: 99%

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A Comparison of Fuel Choice for Backup Generators

Ericson

Olis

2019

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Section: Failure To Run (Ftr)supporting

confidence: 78%

Section: Failure To Start (Fts)mentioning

confidence: 99%

A Comparison of Fuel Choice for Backup Generators

Ericson

Olis

2019

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“…Smith et al [5] presents failure rate information on auxiliary standby diesel and package standby diesel generators. The data source was a US Army Engineering and Housing Support Center study of the reliability, availability, and maintainability characteristics of diesel and gas-turbine power systems.…”

Section: Previous Studiesmentioning

confidence: 99%

“…A separate "Smith Cohort" was constructed for comparison of machines to the study by Smith et al [5] The cohort contained 791 machines rated from 600 to 1800 kW.…”

Section: B Cohorts For Analysismentioning

confidence: 99%

Reliability Assessment of a Large Diesel Generator Fleet

Fairfax

Dowling

Weidknecht

2020

IEEE Trans. on Ind. Applicat.

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PowerSecure (PS), a subsidiary of Southern Company, operates over 1600 microgrids including a large fleet of standby diesel generators. Machines range from 125 to 2800 kW. There are two missions: standby power after utility failure and load management when utility is available. This report updates generator reliability data published over 20 years ago. These results are first derived from uniform records from a distributed data acquisition system. The unique aspects of this effort include automated data collection, analysis, and storage producing a standardized record for all machines and events. This greatly reduces the effort required to prepare reports and analysis. The automated collection largely eliminates human errors in data entry, and prevents post hoc adjustment of mission success or failure. We are not aware of previous published generator data using automated data acquisition. This study counts all failures and excludes none, whereas previous studies exclude more than half. This analysis expresses reliability as experienced by the customers. The number of machines, years in service, and years of operation greatly exceed the sum of previous published studies, enabling calculation of useful confidence limits. The fleet is heterogenous with machines from over a dozen manufacturers and many power ratings. Machine reliability was consistent across brands, and there is no significant difference in reliability for different size machines. This common assumption was not supported by the prior studies. High-quality data enables reliability growth management practices. The fleet reliability for outage demands of all durations increased from 95% in 2011 to 98% in 2014-18. Analysis of failures arrival time shows that the failure rate is strongly dependent on mission duration. The failure rates after 14 h are approximately 1% of the value for the first 30 min of operation. This has important implications for designing systems to meet specified reliability targets, and in interpreting and comparing results from fleets with different mission durations.

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“…This work together with [119] has not considered the starting reliability in their studies. A significant start up failure rate in the gas turbines [120,121] has made the starting reliability a desideratum in energy scheduling and particularly in reserve allocation. The results from these works show that unit failures are most likely to occur during starting sequence.…”

Section: Gas Turbinesmentioning

confidence: 99%

Analysing the integration of different types of energy and reserve providers in a competitive electricity supply market

Toh¹

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Deregulation of the electric power industry has unbundled a single electric power entity into separate business entities in the past two decades in many developed countries. The introduction of competition in the electricity market allows generation plants of different types, inclusive of renewable energy, and demand side management (DSM) to offer their energy and reserve. The main objectives of this new electric power industry are to reduce the cost that the consumers have to pay for List of Acronyms ix

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Reliability survey of 600 to 1800 kW diesel and gas-turbine generating units

Cited by 22 publications

References 0 publications

A Comparison of Fuel Choice for Backup Generators

A Comparison of Fuel Choice for Backup Generators

Reliability Assessment of a Large Diesel Generator Fleet

Analysing the integration of different types of energy and reserve providers in a competitive electricity supply market

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