Optimized control method for primary frequency regulation based on exergy storage correction of thermodynamic system of coal-fired unit
US11146069B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2019 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Jul 5, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S10/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An optimized control method for a primary frequency regulation based on art exergy storage correction of a thermodynamic system of a coal-fired unit is provided. Through measuring and recording temperatures and pressures of working fluids and metal heating surfaces of the coal-fired unit thermodynamic system in real-time, an exergy storage amount of the thermodynamic system is obtained. During a transient process, according to an exergy storage variation before and after acting of each regulation scheme, a maximum power output of each scheme is obtained. Thereafter, through comparing the maximum power output with a power regulation quantity required by a power grid, an optimal primary frequency regulation control scheme is selected, so as to maintain a fast and stable grid frequency. The present invention reduces a selection blindness of the primary frequency regulation schemes, so that an operation flexibility of the coal-fired power unit during the transient processes is greatly improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.