Supervisory system for detecting torsional oscillation in the shaft of a rotating electro-mechanical system
US4051427A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1974 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | Oct 29, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C3/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.