Apparatus and method for operating arc suppression coil
AssigneeEnsto Oy
InventorJyrki PENTTONEN
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Abstract
An apparatus and a method for operating an arc suppression coil in an electric power network are disclosed. The arc suppression coil is operated off-resonance with respect to a normal state resonance point of the electric power network during normal operation of the electric power network. An indication for an occurrence of an earth fault in the electric power network is received and, in response to the indication, the arc suppression coil is tuned towards resonance with respect to the normal state resonance point, while the earth fault is present in the electric power network.
Claims15
An apparatus for operating an arc suppression coil in an electric power network, wherein the apparatus being adapted to:
- operate the arc suppression coil off-resonance with respect to a normal state resonance point of the electric power network during normal operation of the electric power network;
- receive an indication for an occurrence of an earth fault in the electric power network;
- and
- in response to the indication, tune the arc suppression coil towards resonance with respect to the normal state resonance point, while the earth fault is present in the electric power network.
A method for operating an arc suppression coil in an electric power network, wherein the method comprising:
- operating the arc suppression coil off-resonance with respect to a normal state resonance point of the electric power network during normal operation of the electric power network;
- receiving an indication for an occurrence of an earth fault in the electric power network;
- and
- in response to the indication, tuning the arc suppression coil towards resonance with respect to the normal state resonance point, while the earth fault is present in the electric power network.
Dependencies are inferred from the claim text.