Fault detection in energy supply networks
US10073148B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2012 |
| Grant date | Sep 11, 2018 |
| Priority date | — |
| Expiry date | Dec 9, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S40/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for detecting a fault in an energy supply network. State values are determined for a plurality of measuring points. The state values, which specify an electrical state of the energy supply network at the respective measuring point, are transmitted to a control center. The state values are used by an evaluation device for detecting a fault in the energy supply network. In order to detect errors in energy supply networks with low short-circuit currents with high reliability and selectivity, the evaluation device performs a state estimation, using a model description of the supply network suitable for describing possible electrical states of the energy supply network on the basis of state variables. The estimation examines whether an electrical state at least approximately matches the respective state values, can be described by the model description. If such a state is lacking, the evaluation device generates an fault detection signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.