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Generator Users Group

Generator Users Group: Video content assists owner/operators troubleshooting equipment issues

To understand the true value of a user group like the Generator Users Group, you must attend and participate in its collaborative, technical environment of generator experts. With the 2022 conference just one month away in San Antonio, the following intends to illustrate the unique content disseminated and absorbed by attendees. The 2021 conference of …

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Spring migration, collector changeout, flex-link systems

James Joyce, operations manager, MD&A’s Generator Repairs Div, speaking at the 2022 conference of the 7F Users Group, May 23-27, in the Fairmont Dallas Hotel, focused on three topics of particular importance to owner/operators of 7FH2 generators: Spring migration, collector changeout, and flex-link systems. All styles of 7FH2s—Gens One, Two, and Three, plus 324s—are affected …

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Correcting stator-core looseness in generators for gas and steam turbines

Jamie Clark of AGT Services kicked off the vendor presentations at the 2022 conference of the 7F Users Group, May 23-27, at the Fairmont Dallas Hotel, by addressing stator-core looseness in generators for gas- and steam turbines. Perhaps to jolt the audience awake after breakfast, Clark noted that there’s a “huge uptick” in stator-related problems” …

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Turbine blade, vane cooling—a primer

The most efficient powerplants ever produced are now entering service. These latest and largest combined cycles—powered by GE’s 7HA, Siemens’ SGT6-8000H, and Mitsubishi Hitachi’s M501J engines—are all clocking in at 62% – 63% thermal efficiency. This makes them the most efficient heat engines yet perfected by engineers, with all three OEMs striving to reach 65% …

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GENERATORS: Lessons learned, best practices shared at GUG 2017

There are nearly as many electric generators at fossil-fired and nuclear powerplants as there are gas and steam turbines combined. So, you might think that with thousands of utility/large industrial-grade generators rated more than 25 MW operating in the US alone, the annual meeting of the Generator Users Group (GUG) would draw hundreds of attendees. …

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Checklist for success: NV Energy commissions seven turbine DCSs in seven weeks

Commissioning seven gas-turbine (GT) control systems in seven weeks would probably be taxing under the best of conditions. In NV Energy’s case, there were some extenuating circumstances. First, the seven systems are located at two generating facilities acquired by the utility in 2014. Second, it is challenging to test a retrofit, due to air permit …

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GENERATORS: Lessons learned, best practices shared at GUG 2017 (Part 2)

CCJ ONsite’s coverage of technical highlights from the Generator Users Group’s Third Annual Conference, held in Phoenix, Aug 27-30, 2017, continues below with Part 2 of the lessons learned and best practices shared among attendees. The three-part series concludes in the next issue of this electronic publication. Presentations and discussions are arranged in these five …

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Generators: Lessons learned, best practices shared at GUG 2017 (Part 3)

CCJ ONsite’s coverage of technical highlights from the Generator Users Group’s Third Annual Conference, held in Phoenix, Aug 27-30, 2017, concludes below with the third and final installment of lessons learned and best practices shared among attendees. Presentations and discussions are arranged in these five sections: Stator frames and magnetic cores. Stator windings and bus systems. …

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Keep your plant competitive: Obsolete legacy systems

Generation assets in competitive markets must perform at a high level year in and year out to meet their contractual obligations. Failure to embrace a philosophy of “continual improvement” in plant operations means it’s only a matter of time before the competition will eat your lunch. The focal point of continual-improvement efforts typically is the …

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