Method and apparatus for improved fault detection in power generation equipment
US7953577B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2005 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Aug 18, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B23/0297
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method and apparatus for detecting faults in power plant equipment is discloses using sensor confidence and an improved method of identifying the normal operating range of the power generation equipment as measured by those sensors. A confidence is assigned to a sensor in proportion to the residue associated with that sensor. If the sensor has high residue, a small confidence is assigned to the sensor. If a sensor has a low residue, a high confidence is assigned to that sensor, and appropriate weighting of that sensor with other sensors is provided. A feature space trajectory (FST) method is used to model the normal operating range curve distribution of power generation equipment characteristics. Such an FST method is illustratively used in conjunction with a minimum spanning tree (MST) method to identify a plurality of nodes and to then connect those with line segments that approximate a curve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.