Stabilizing Electrical Power in an Electrical Grid
AssigneeABB Schweiz AG
InventorsRaeto Stadler, Ralf Baechle
Life of this patent
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Abstract
A method for stabilizing electrical power in an electrical grid including: detecting a reduced power demand in the electrical grid; determining an active power and a reactive power to be compensated in the electrical grid; and compensating at least a part of the active power and at least a part of the reactive power by controlling a power compensating circuit connected to the electrical grid. The power compensating circuit including an at least resistive load connectable to the electrical grid via semiconductor switches. A compensated active power and a compensated reactive power is adjusted by setting switching angles of the semiconductor switches with respect to a phase angle of a grid voltage in the electrical grid.
Claims20
A method for stabilizing electrical power in an electrical grid, the method comprising:
- detecting a reduced power demand in the electrical grid;
- determining an active power and a reactive power to be compensated in the electrical grid;
- compensating at least a part of the active power and at least a part of the reactive power by controlling a power compensating circuit connected to the electrical grid;
- wherein the power compensating circuit a at least resistive load connectable to the electrical grid via semiconductor switches;
- wherein a compensated active power and a compensated reactive power is adjusted by setting switching angles of the semiconductor switches with respect to a phase angle of a grid voltage in the electrical grid.
A system for stabilizing electrical power in an electrical grid, the system comprising:
- the electrical grid;
- a power compensating circuit connected to the electrical grid;
- a controller for controlling the power compensating circuit;
- wherein the system is adapted for performing the method including the steps detecting a reduced power demand in the electrical grid;
- determining an active power and a reactive power to be compensated in the electrical grid;
- compensating at least a part of the active power and at least a part of the reactive power by controlling a power compensating circuit connected to the electrical grid;
- wherein the power compensating circuit includes at least resistive load connectable to the electrical grid via semiconductor switches;
- wherein a compensated active power and a compensated reactive power is adjusted by setting switching angles of the semiconductor switches with respect to a phase angle of a grid voltage in the electrical grid.
Dependencies are inferred from the claim text.