Method of substation-control center two-level distributed nonlinear state estimation for power system
US8660807B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2011 |
| Grant date | Feb 25, 2014 |
| Priority date | — |
| Expiry date | Jul 2, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S20/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A substation-control center tow-level distributed grid nonlinear state estimation method is provided. RTU measurement data and PMU measurement data at each voltage level in each substation are collected. Performing a first three-phase state estimation is performed to obtain a first estimation result. Bad data from the RTU measurement data and the PMU measurement data are removed to estimate a state of a CB. A new CB island at each voltage level is formed, and a second three-phase state estimation for the new CB island is performed to obtain a final estimation result, in which the new CB island is a bus. The final estimation result is processed to obtain ripe data. And the ripe data, a part of the RTU measurement data and a part of the PMU measurement data are collected and a whole grid state estimation is performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.