Tags Posts tagged with "reliability"

reliability

New research into turbine reliability from Wind Energy Update in partnership with Wind Energy Benchmarking Services (WEBS) has found DFIM turbines have the longest repair times per failure. The research took thousands of years of combined operational data for different generation capacities and turbine technologies. By measuring the time to failure and the repair time per failure, the research provides a cutting-edge insight into turbine reliability and performance. Participation in a benchmarking programme is critical to enable access to reliability and performance data, knowledge sharing of best practices and the implementation of sector-wide standards. This is already increasing investor confidence in the wind sector by reducing the levelised cost of energy. Without strong benchmarking capabilities, insights such as this are harder to detect and asset managers will miss out on the benefits of greater reliability and targeted maintenance planning, which benchmarking can offer.

The O&M landscape has undergone considerable changes in recent years. Owner, operators and IPPs are increasingly examining a range of O&M options as their assets reach end-of-warranty. A recent report by GCube noted that around 1/3 of all wind turbines are nearing the end of O&M service agreements. Operators, asset managers and those responsible for overall project operations are now assessing the value of independent service provider (ISP) maintenance contracts. Cost is often cited as an important issue when selecting an ISP or the OEM end-of-warranty package option. At a time of decreasing subsidies and record low auction prices, cost is increasingly significant, a trend expected to continue over the next 3-5 years.

 

Navigant Research has noted that warranties have now expired on over 50% of the global installed turbine capacity. Make Consulting predict that the global O&M market is set to grow from $9.7bn in 2015 to $19.3bn by 2021. This trend is particularly prevalent in the USA. IHS Energy Research forecast US O&M spending will almost double to $6bn by 2025 as a direct result of the number of turbines coming out of warranty. Read more…

Article published in: FuturENERGY January-February 2017

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In recent years, CSP energy has experienced solid and sustained growth thanks to the reliability of the technology developed and to some sound competitive bases that have stimulated its development all over the world. Despite the installation of new capacity in Spain having been paralysed since 2013, CSP energy grew its output and management figures during 2015, proving that this technology can cover energy demand during peaks in consumption. It has also confirmed that the learning curve of the plants’ first years in operation has clearly demonstrated its impact by having exceeded the 5 TWh global annual production mark in 2015. This indicates that after an average of five years in operation, CSP plants have gained in efficacy and reliability given that their production increases year on year.

According to recent figures, CSP energy generated 3.9% of Spain’s electricity from June to September, achieving a one-off record for solar generation on 19 June, of 9.4% of the country’s total demand. The contribution to the system by CSP technology has never before reached 9% of demand.

The 49 CSP plants operating in Spain, with an installed capacity of 2,300 MW, contributed 4.4% to power generation in June, 4% in July and August, and 3.1% in September, providing electricity generation figures similar to those of PV energy despite PV’s installed capacity being more than double that of CSP. Read more…

Luis Crespo
President of Protermosolar

Article published in: FuturENERGY October 2016

Ingersoll Rand has introduced new models to its line of Next Generation R-Series compressors, which incorporate the latest advancements in variable speed drive (VSD) technology to increase air flow output by up to15%, reduce energy costs by up to 35% and increase system reliability. With the launch of the RS30n and RS37n VSD models, Ingersoll Rand engineers designed a streamlined system that maximizes the latest advancements in rotor dynamics coupled with Totally Enclosed, Fan-Cooled (TEFC) high-performance motors, increasing energy efficiency.

At the heart of every Next Generation R-Series compressor is the airend Ingersoll Rand engineers designed to significantly improve overall system efficiency by ensuring low pressure drops. It delivers specific energy output and premier airflow capacity for each compressor application.

The compressors are designed to withstand harsh plant conditions and can run continuously in ambient temperatures of up to 115 degrees Fahrenheit. The starter panel meets NEMA 12/IP55 protection ratings to provide protection against circulating dust, falling dirt and dripping or splashing liquids.

In addition to matching output based on the demand, the RS30n and RS37n compressors also decrease energy use during start-up, which can draw up to 270% of the full load current. RS30n and RS37n limit the in-rush current during start-up, minimizing peak power charges and lowering energy usage.

The new compressor models also come equipped with updated standard features to enhance reliability and durability.

All Next Generation R-Series air compressors are equipped with Xe-series controllers, which allow easy access to and control of the compressed air system. The Xe70 controller has customizable units of measure and built-in sequencing for up to four compressors and communicates directly to the inverter drive to determine the appropriate running speed of the airend.

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The fleet of Siemens H-class high-efficiency gas turbines achieved more than 200,000 operating hours in January 2016. There are currently 19 turbines in the SGT-8000H series in commercial operation, and they are setting the standard for efficiency, reliability, and availability. Siemens has sold a total of 76 H-class gas turbines worldwide to date: This makes it the most successful gas turbine in this efficiency category on today’s world market.

Since introducing this turbine onto the market in 2010, Siemens has sold 39 of the turbines on the 50-Hertz (Hz) market worldwide. The largest single order to date for the SGT5-8000H turbine has come from Egypt, where a total of 24 H-class engines are being installed in the Beni Suef, Burullus, and New Capital power plant projects. Siemens has also sold 37 turbines worldwide on the 60-Hz market. The most recent order for two H-class turbines came from Mexico in January 2016 for the CFE Empalme II combined cycle plant. The SGT-8000H turbines are manufactured in Berlin, Germany, and Charlotte, U.S. and shipped from these locations to sites around the globe.

The first SGT5-8000H gas turbine entered commercial operation in 2011 in Irsching near Ingolstadt, Germany, with the next SGT6-8000H units for the 60-Hz market following in 2013 at the Cape Canaveral power plant in Florida, U.S. and the Dangjin 3 plant in South Korea. Siemens is investing its expertise acquired from 200,000 operating hours, or roughly 23 years of operation, in the continuous development of the H-class machines.

“The SGT-8000H achieves a very high degree of efficiency and is marked by short startup times and fast load-changing capabilities,” said Theo Maas, head of Large Gas Turbines and Generators in the Siemens Power and Gas Division. “The turbines have proven themselves extensively in daily power plant operation after more than 200,000 hours of operation: The reliability of the SGT-8000H fleet is over 99 percent, and availability is over 96 percent.”

Combined cycle power plants equipped with SGT-8000H gas turbines achieve an efficiency level of over 60 percent. The Lausward combined cycle plant at the Düsseldorf port has set three new world records at once: The power plant with the SGT5-8000H gas turbine as its key component achieved a net efficiency level of about 61.5 percent, with a maximum net electrical generating capacity of 603.8 megawatts (MW). The plant is also able to provide 300 MW(th) of heat for the city of Düsseldorf’s district heating network. The installation of an H-class gas turbine in this kind of combined heat and power plant (CHP) has proven to be one of the most efficient ways to convert fuel into usable energy. The high fuel efficiency of the plant plays an important role in meeting economic requirements and reducing the environmental impact.

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