scottschwieger – Page 73 – Combined Cycle Journal

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Special technical presentations to generator users focus on insulation repairs, updating of rotors for cyclic duty, field repairs, hi-pot testing, third-harmonic stator ground protection

Presentations made by National Electric Coil, MD&A, AGT Services, and Siemens Energy to owner/operators participating in Weeks Three and Four of the virtual GUG2020 conference are summarized below. You can access the PowerPoints submitted by the first three vendors on the Power Users website. The Siemens presentations are posted on the company’s Customer Extranet Portal […]

Special technical presentations to generator users focus on insulation repairs, updating of rotors for cyclic duty, field repairs, hi-pot testing, third-harmonic stator ground protection Read More »

Owner/operators share experiences on finding leaks, collector flashovers, GVPI stator-bar failure, and much more at final sessions of GUG2020

In anticipation of the upcoming 2021 virtual conference of the Generator Users Group, readers may find recaps of user and consultant presentations from the 2020 virtual meeting quite helpful. If you are a registered “Power User,” on-demand recordings and slide decks are available here. GUG2021, which operates under the Power Users umbrella, will be conducted

Owner/operators share experiences on finding leaks, collector flashovers, GVPI stator-bar failure, and much more at final sessions of GUG2020 Read More »

GUG2021: Generator users to discuss matters most pertinent to their operations –starting July 15

The 2021 conference of the Generator Users Group will be a virtual event like the highly successful 2020 online meeting. GUG2021, which operates under the Power Users umbrella, will be conducted on consecutive Thursdays from July 15 through August 5, plus Wednesday, July 21. Registration for the meeting is limited generator owner/operators (users) and comes

GUG2021: Generator users to discuss matters most pertinent to their operations –starting July 15 Read More »

Load-gear alignment: The old-fashioned way

Turbine Tip No. 14 from the PAL solutions library applies to General Electric package power plants (PPP) incorporating MS5001 and MS6001 gas turbines GE offered these two gas-turbine models requiring speed-reduction gearboxes to drive 2-pole ac generators (Fig1): The MS5001 package power plant manufactured by the OEM in Schenectady from 1960 to the mid-1980s. The

Load-gear alignment: The old-fashioned way Read More »

Two HRSG case studies: Flawed original designs get corrected

With just a few excellent slides and a tag team of a design specialist and a construction specialist, Greg Rueff, Vogt Power International, and Tim Holland, TEiC (a Babcock Power company), showed attendees at the first installment of the HRSG Forum’s Supplier Workshop Series that sometimes you have to “redesign and replace” to relieve your

Two HRSG case studies: Flawed original designs get corrected Read More »

Proper HRSG inspection helps guard against a forced outage

Plant managers diligently pursue O&M strategies that have a high probability of success for keeping their electric generating assets in service throughout the “must-run” season—this to assure a profitable year. Deciding on what inspections are necessary to access the information needed for reliable decision-making is part of the challenge. Today’s meager budgets do not allow

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Get more from renewables with seasonal, centralized H2 assets

In a webinar August 12, experts from Mitsubishi Power Americas (MPA) shared a first-order long-term modeling exercise which showed that a centralized hydrogen storage facility and hydrogen-fueled prime movers can economically avoid having to curtail wind and solar energy in the Western Electricity Coordinating Council (WECC) and improve carbon footprint even further than a baseline

Get more from renewables with seasonal, centralized H2 assets Read More »

Team GE focuses on performance improvement, operational flexibility, upgrades at Power Users’ annual meetings

The first thing to note about the GE presentations made at the 2020 virtual conferences of Power Users’ Combined Cycle, Power Plant Controls, Steam Turbine, and Generator Users Groups is that you’re probably going to want to listen to the recordings, if you’re approved to access them at the OEM’s MyDashboard website. For the Power

Team GE focuses on performance improvement, operational flexibility, upgrades at Power Users’ annual meetings Read More »

Repairs to gas baffles between HRSG tube panels restore SCR performance

A 480-MW 1 × 1 combined cycle was experiencing NOx emissions above its 2-ppm stack permit limit. The problem was more pronounced with supplementary firing, so the plant was restricted both in its level of duct firing and overall output. This HRSG, which incorporates a heat-recovery section directly upstream of the SCR (the “box” in

Repairs to gas baffles between HRSG tube panels restore SCR performance Read More »

$400 relay takes out steam turbine/generator; multiple single-point vulnerabilities found

A presentation entitled “Does Your Backup System Work—Really?” during Week Three of the Combined Cycle Users Group (CCUG) 2021 virtual conference reminds why user groups can be worth their weight in gold. The presenter, asset manager for a 600-MW, 2 × 1 combined cycle with Siemens 501FD gas turbines and a KN steam turbine/generator, reviewed

$400 relay takes out steam turbine/generator; multiple single-point vulnerabilities found Read More »

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