A Review on Power Plant Maintenance and Operational Performance

Velayutham, Puvanesan; Ismail, Firas Basim

doi:10.1051/matecconf/201822505003

Cited by 10 publications

(8 citation statements)

References 18 publications

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“…The technologies of solar source have been growing and this implies sophistication and size of systems and, consequently, it requires an increase in maintenance to ensure reliability, availability, maintainability, and security. An efficient maintenance method plays a vital role for a plant to operate effectively with high reliability and lower maintenance costs 65 . When evaluating a system, its performance depends on its components.…”

Section: Resultsmentioning

confidence: 99%

“…An efficient maintenance method plays a vital role for a plant to operate effectively with high reliability and lower maintenance costs. 65 When evaluating a system, its performance depends on its components. That said, some components have a greater influence on the reliability and availability of the system than others.…”

Section: Kpis Maintenance Factorsmentioning

confidence: 99%

“…The inefficiency of the maintenance management of medium to large solar plants affects the reliability of the system's operation, as well as the production cost of the generation facilities. 65 In addition, proper management can extend the period to the next failure and, at the same time, can reduce the cost and risks of daily operation. The measurement of economic factors helps managers to verify the plant's financial viability.…”

Section: Economical Kpismentioning

confidence: 99%

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Management of operation and maintenance practices in photovoltaic plants: Key performance indicators

Rediske

Michels

Siluk

et al. 2022

Intl J of Energy Research

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Summary The number of large photovoltaic (PV) power plants is increasing around the world. Energy sale usually follows demand contracts with clearly defined obligations, subject to nonsupply penalties. Not supplying the amount of contracted energy is a critical issue to PV plant performance, which can be mitigated with operation and maintenance (O&M) good practices. Furthermore, as the PV plant ages, O&M practices become increasingly important to improve or maintain a good performance. Performance assessment is a complex process that involves several parameters to collect, indicators to measure, and action plans to solve the identified problems. The objective of this study is to identify relevant factors in performance evaluation of O&M practices of medium to large PV plants. Through a systematic literature review and Delphi method with specialists, 33 key performance indicators (KPIs) were determined and classified in operation or maintenance categories, and further in technical or economic subcategories. This paper also organized a set of parameters that PV plant managers should collect to determine the KPIs and evaluate the O&M practices performance. Efficient management of O&M practices results in an indirect increase in generation capacity, as well as ensuring compliance with electricity supply contracts.

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Section: Resultsmentioning

confidence: 99%

Section: Kpis Maintenance Factorsmentioning

confidence: 99%

Section: Economical Kpismentioning

confidence: 99%

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Management of operation and maintenance practices in photovoltaic plants: Key performance indicators

Rediske

Michels

Siluk

et al. 2022

Intl J of Energy Research

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“…While planned preventive maintenance is advantageous to collect information concerning the condition of the power plant and to extend its service life, reactive maintenance should be ultimately applied. Therefore, it is important to detect early warnings of damaged equipment because if a component suddenly fails, the operation of the entire power plant needs to be stopped, resulting in higher production costs (Velayutham and Ismail 2018). As shown in the results obtained, shutdown times should be as short as possible, as they might result in the ingress of oxygen into the system and in the (temporary) decrease of temperature.…”

Section: Implications (For Geothermal Energy Technology)mentioning

confidence: 99%

Laboratory tests simulating corrosion in geothermal power plants: influence of service conditions

2020

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One of the main challenges associated with the operation and maintenance of binary geothermal power plants is the degradation of construction materials. In this sense, it is crucial to apply appropriate preventive maintenance in critical components (such as the wellheads, heat exchangers, or pipes), while reducing shutdown times. Based on electrochemical measurements performed in an autoclave corrosion testing setup, we studied the corrosion mechanism of API L80 steel grade as a function of operational and/or maintenance procedures. We used a test fluid representative for a site in Switzerland, but the main observations made may be applicable in a wider context. We found that changes in the fluid temperature (from 200 to 100 °C) or temporary oxygen ingress significantly influenced the corrosion behavior of this carbon steel and increased its corrosion rate (from approx. 20 µm/year to > 120 µm/year). After a few days, the corrosion rate was found to decrease and stabilize around values of 50–70 µm/year, as a result of a porous corrosion product layer formed on the metal surface (approx. 250 µm thick). Electrochemical impedance spectroscopy indicated an increase in capacitance of the double layer over time, most likely due to an increase in the effective surface area of the steel sample, as a consequence of surface roughening due to corrosion. The results from this study may be implemented in the design and operation of future power plants in Switzerland and elsewhere to ensure reliable and cost-effective energy production from geothermal resources.

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“…Blackouts or shutdowns are common in a steam power plant, so a lot of research has been done to find out the cause [1], [6][7]. The blackout or shutdown at power plants can be divided into 2, namely planned shutdown and forced shutdown.…”

Section: Introductionmentioning

confidence: 99%

The Maintenance Task Allocation Analysis in Steam Power Plant: Case Study on Closed Cooling Water System

Siswantoro

Priyanta

Suminta

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The closed cooling system is one of the systems that functioned to ensure the cooling water supply can be continuously distributed and ensure that the production process does not cause the equipment or products to overheat, which can result in failure to the equipment and affect the production process due to downtime repair. Reliability Centered Maintenance (RCM) is one of the methods that can be used to analyze the cause of failure, impact, and determination of appropriate and effective maintenance tasks. The purpose of this research is to identify potential failures, determine the maintenance task and determine the optimal maintenance schedule in the closed cooling system of a steam power plant by using the Reliability Centered Maintenance method. The results of analysis on the closed cooling pump, heat exchanger, expansion tank, minimum flow valve, and level control valve obtained a total of 155 failure modes, of which 73% of total failure modes were identified as an evident failure and 27% identified as a hidden failure. While the results of the maintenance task recommendation obtained a total of 155 maintenance tasks which consists of 5 maintenance task categories. They are 88 (57%) of total failure modes recommended to scheduled on condition task, 38 (24%) scheduled restoration task, 20 (13%) scheduled discard task, 3 (2%) schedule finding failure, and 6 (4%) of total failure modes recommended to no scheduled maintenance.

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A Review on Power Plant Maintenance and Operational Performance

Cited by 10 publications

References 18 publications

Management of operation and maintenance practices in photovoltaic plants: Key performance indicators

Management of operation and maintenance practices in photovoltaic plants: Key performance indicators

Laboratory tests simulating corrosion in geothermal power plants: influence of service conditions

The Maintenance Task Allocation Analysis in Steam Power Plant: Case Study on Closed Cooling Water System

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