Generation &
transmission cooperatives with significant wind penetration in their service
territories or the markets in which they operate may need to cycle their
fossil-fuel fired plants in response to wind ramping. It is important for co-op engineering staff to understand the
new operating regimes, common failure modes, appropriate test and inspection
methods, and how to apply this knowledge when faced with major repair
decisions.
This Surveillance article is
the second in a two-part series to provide a summary of the recent CEATI Generator Maintenance and Condition Assessment Guide and provides guidance on the types of off-line and
on-line tests and monitoring systems that can be used to detect and correct
generator fault mechanisms. The first article provides concise information on the fault mechanisms of turbine/generators and the damage they can cause.
