Abstract: An approach for detecting rotor anomalies is disclosed. Vibration data for a vibration sensor(s) and for a transient speed operation is classified into a plurality of rotor speed ranges. A predetermined percentile vibration amplitude is determined for each rotor speed range for the vibration sensor(s). Using historical vibration measurement data obtained from a predetermined number of previous transient speed operations performed by at least the rotor, it is determine whether a vibration measurement obtained during the transient speed operation is indicative of a rotor anomaly by determining whether a trend exists in the predetermined percentile vibration amplitude for at least one of the rotor speed ranges and the vibration sensor(s) over a preset number of previous transient speed operations. A rotor anomaly is indicated where a trend exists.

Abstract: A method for determining mass differential in a hot gas path component of a gas turbine includes monitoring operational conditions of the gas turbine; determining whether changes in a gas turbine wheelspace temperature has occurred; determining whether a wheelspace temperature has changed by comparing the wheelspace temperature to at least one of a compressor inlet temperature and a compressor discharge temperature indicates a change in temperature; in response to determining the wheelspace temperature indicates a change in temperature has occurred; determining whether at least one of the following exists: a gas turbine exhaust temperature indicates a simultaneous change with the temperature change between wheelspace temperature compared to the at least one of the compressor inlet temperature and the compressor discharge temperature, and a gas turbine vibrational change.

Abstract: An approach for detecting rotor anomalies is disclosed. Vibration data for a vibration sensor(s) and for a transient speed operation is classified into a plurality of rotor speed ranges. A predetermined percentile vibration amplitude is determined for each rotor speed range for the vibration sensor(s). Using historical vibration measurement data obtained from a predetermined number of previous transient speed operations performed by at least the rotor, it is determine whether a vibration measurement obtained during the transient speed operation is indicative of a rotor anomaly by determining whether a trend exists in the predetermined percentile vibration amplitude for at least one of the rotor speed ranges and the vibration sensor(s) over a preset number of previous transient speed operations. A rotor anomaly is indicated where a trend exists.

Abstract: In one example embodiment, a fluid induced instability detection system is provided that monitors various vibration characteristics of a turbomachine, collects vibration data in real-time, and uses the vibration data to detect and analyze changes in various operating parameters such as vibration, speed, and loading conditions, and to provide an indication of a vibration anomaly and/or potential operational risk in one or more components of the turbomachine. The vibration data can be particularly associated with certain components that are directly or indirectly impacted by a modification in process fluid flow characteristics or lubrication oil flow characteristics in the turbomachine due to various reasons such as process fluid flow disturbances, lubricating oil flow disturbances, and/or a change in turbomachine operational parameters. The fluid induced instability detection system detects abnormalities in the vibration data and provides an indication of one or more potential faults in the turbomachine.

Abstract: A fluid induced instability detection system and method is provided to monitor various vibration characteristics of a turbomachine. The fluid induced instability detection system detects abnormalities in the vibration data and provides an indication of one or more potential faults in the turbomachine.

Abstract: In one example embodiment, a fluid induced instability detection system is provided that monitors various vibration characteristics of a turbomachine, collects vibration data in real-time, and uses the vibration data to detect and analyze changes in various operating parameters such as vibration, speed, and loading conditions, and to provide an indication of a vibration anomaly and/or potential operational risk in one or more components of the turbomachine. The vibration data can be particularly associated with certain components that are directly or indirectly impacted by a modification in process fluid flow characteristics or lubrication oil flow characteristics in the turbomachine due to various reasons such as process fluid flow disturbances, lubricating oil flow disturbances, and/or a change in turbomachine operational parameters. The fluid induced instability detection system detects abnormalities in the vibration data and provides an indication of one or more potential faults in the turbomachine.

Abstract: A system includes a turbine fuel controller configured to control a first supply of a first fuel to a turbine engine, a second supply of a second fuel to the turbine engine, and a transition between the first fuel and the second fuel. The turbine fuel controller includes a fuel integrity control logic configured to control a volume of the first fuel in a first fuel line to maintain a first fuel integrity while the turbine engine is operating on the second fuel rather than the first fuel.