Development of telemetry for high-speed rotor instrumentation and monitoring: Final report
A modern data acquisition and telemetry system for rotating systems was developed as a part of a program, jointly funded by EPRI and Westinghouse, to develop a 300 MVA superconducting generator. While the overall program was terminated before completion, the telemetry development task was essentially complete at termination. It had been planned that the data acquisition and telemetry system was to be used in large scale models and the final 300 MVA rotor testing for transmitting sensor data from the rotating frame. An important part of this development was the qualification of a number of cryogenic sensors that were to be used in conjunction with the telemetry system for measuring temperature, strain and liquid helium level. The telemetry system that was developed handled the data transmission by digital frequency shift keying with a carrier of 200 kHz. The analog sensor signals were amplified and filtered ''on-board'' before being multiplexed and converted to a digital signal. All of this was under the control of a single chip microcomputer (Intel 8748) in the rotating frame. The overall sensor, data acquisition and telemetry system were operated and tested under rotation for a period of over one hundred hours. Overall, the system has proven itself to be reliable and effective. The present report covers all aspects of this development in detail, including the circuit and software design and performance. 27 refs., 58 figs.
- Research Organization:
- Westinghouse Electric Corp., Orlando, FL (USA). Steam Turbine Generator Div.; Electric Power Research Inst., Palo Alto, CA (USA)
- OSTI ID:
- 6384423
- Report Number(s):
- EPRI-EL-4911; ON: TI87920451
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTING GENERATORS
DATA ACQUISITION SYSTEMS
COMPUTER CODES
HELIUM
PERFORMANCE TESTING
STRAIN GAGES
TEMPERATURE MEASUREMENT
ELECTRIC GENERATORS
ELEMENTS
FLUIDS
GASES
MEASURING INSTRUMENTS
NONMETALS
RARE GASES
SUPERCONDUCTING DEVICES
TESTING
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