Method and apparatus for estimating frequency characteristics of power system, and application thereof
US6338009B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1998 |
| Grant date | Jan 8, 2002 |
| Priority date | — |
| Expiry date | Oct 20, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J3/241
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of, and an apparatus for, estimating frequency characteristics of a power system in accordance with the operation conditions of the power system. In the estimation of frequency characteristics, a sensitivity coefficient of power control of each generator with respect to a frequency deviation is defined as a frequency characteristic coefficient of the generator and this frequency characteristic coefficient of the generator is weighted in accordance with its rated output so as to determine a frequency characteristic coefficient of a generator group comprising a plurality of generators belonging to the power system. A frequency characteristic coefficient of a load determined separately is added to the frequency characteristic coefficient of the generator group, and estimated frequency characteristics for the supply-and-demand imbalance quantity of the power system are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.