Supervisory system for detecting torsional oscillation in the sh

Details Supervisory system for detecting torsional oscillation in the sh Supervisory system for detecting torsional oscillation in the sh

1974-10-29

1977-09-27

Hickey, Robert J.

Electricity: single generator systems

With signals, indicators, recorders, testing, etc.

73 701, 361 1, 318565, 364801, H02H 706, G01M 700, G01H 108

Patent

active

040514277

ABSTRACT:
An analog simulator for simulating the mechanical resilience, mass and damping characteristics of a turbine-generator system. The aforementioned parameters are represented by inductance, capacitance and resistance in the simulating system. Electrical power at the output of a generator is sensed by a power transducer and is provided as input to the simulating system. The power is a measure of the torque on the shaft of the generator. The simulating system computes the torsional oscillations between rotating members of the turbine-generator system and provides electrical output signals which are related to the magnitudes and frequencies of the various computed torsional oscillations. The signals are provided to indicating means such as counters, strip recorders and oscillographs for recording the timing, magnitude, and frequency of the various torsional oscillations. The signals are also provided to shut-down means so that the turbine-generator may be shut down if the torsional oscillations are of sufficient magnitude to damage the system shaft.

REFERENCES:
patent: 2842108 (1958-07-01), Sanders
patent: 2858070 (1958-10-01), Scharff
patent: 2935670 (1960-05-01), Gorrie
patent: 3284615 (1966-11-01), Yetter
patent: 3575636 (1971-04-01), Nantes et al.
patent: 3693402 (1972-09-01), Jones
patent: 3758762 (1973-09-01), Littman et al.
patent: 3783680 (1974-01-01), Mason
patent: 3842661 (1974-10-01), Marshall et al.

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