Method and apparatus for controlling arc suppression device
OwnerSaku Siermala, Janne Leminen +1inventors
InventorsSaku Siermala, Janne Leminen, Janne Altonen
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Abstract
A method and apparatus for controlling an arc suppression device of a three-phase electric network, the arc suppression device having an adjustable admittance connected between a neutral point of the three-phase electric network and earth, the apparatus being configured to determine a resonant frequency of a zero-sequence system of the three-phase electric network and determine, based on the determined resonant frequency of the zero-sequence system of the three-phase electric network, whether to initiate a tuning of the arc suppression device of the three-phase electric network.
Claims20
A method for controlling an arc suppression device of a three-phase electric network, the arc suppression device having an adjustable admittance connected between a neutral point of the three-phase electric network and earth, the method comprising:
- a) determining a resonant frequency of a zero-sequence system of the three-phase electric network;
- and
- b) determining, based on the determined resonant frequency of the zero-sequence system of the three-phase electric network, whether to initiate a tuning of the arc suppression device of the three-phase electric network.
An apparatus for controlling an arc suppression device of a three-phase electric network, the arc suppression device having an adjustable admittance connected between a neutral point of the three-phase electric network and earth, the apparatus configured to:
- determine a resonant frequency of a zero-sequence system of the three-phase electric network;
- and
- determine, based on the determined resonant frequency of the zero-sequence system of the three-phase electric network, whether to initiate a tuning of the arc suppression device of the three-phase electric network.
A controller for an arc suppression device for a three-phase electric network, the arc suppression device having an adjustable admittance and configured to be connected between a neutral point of the three-phase electric network and earth, the controller comprising at least one processor and a memory storing instructions that, when executed by the at least one processor, cause the controller to:
- determine a resonant frequency of a zero-sequence system of the three-phase electric network;
- and
- determine, based on the determined resonant frequency of the zero-sequence system of the three-phase electric network, whether to initiate a tuning of the arc suppression device of the three-phase electric network.
Dependencies are inferred from the claim text.