Method and a device for selecting and dimensioning measures in a case of instability in an electrical power system
AssigneeABB AB
InventorsDaniel Karlsson, Sture Lindahl
Life of this patent
Estimating the term…
Abstract
A method for determining/dimensioning measures for restoring an electrical power system, which experiences or is heading for a voltage instability, to a steady-state condition, wherein there is no immediate risk of instability. An actual voltage/phase angle in the electrical power system is determined. The power unbalance within at least one sub-area in the electrical power system is determined. Suitable power-balancing measures are determined. The extent of the respective measures is determined. The power-balancing measures are carried out. Also, a device for carrying out the method.
Claims26
A method for determining/dimensioning measures for restoring an electrical power system, which experiences or is heading for a voltage collapse, to a normal condition, the method comprising:
- determining an actual voltage/phase angle in the electrical power system,
- determining a power unbalance within at least one sub-area in the electrical power system,
- determining suitable power-balancing measures,
- dimensioning an extent of the respective measure, and
- carrying out the power-balancing measures.
A device for determining/dimensioning measures for restoring an electrical power system, which experiences or is heading for a voltage collapse, to a normal condition, the device comprising:
- actual voltage/phase angle determining means arranged for determining an actual voltage/phase angle in the electrical power system,
- power unbalance determining means arranged for determining a power unbalance within at least one sub-area in the electrical power system,
- power-balance measure determining means arranged for determining suitable power-balancing measures,
- dimensioning means arranged for dimensioning the extent of the respective measures, and
- restoring means arranged such that the selected measures can enable the electrical power system to be restored to a stable condition.
A computer program product, comprising:
- a computer readable medium;
- and
- computer program instructions recorded on the computer readable medium and executable by a processor for carrying out a method comprising
- determining an actual voltage/phase angle in the electrical power system,
- determining a power unbalance within at least one sub-area in the electrical power system,
- determining suitable power-balancing measures,
- dimensioning an extent of the respective measure, and
- carrying out the power-balancing measures.
Dependencies are inferred from the claim text.