Shielding arrangement for high voltage equipment
AssigneeHitachi Energy Switzerland AG
InventorsMats Larsson, Dong Wu, Liliana Arevalo, Christer Tornkvist
Life of this patent
Estimating the term…
Abstract
A shielding arrangement can be provided for a piece of high voltage equipment spaced from a neighboring object. The piece of high voltage equipment has a first electric potential and the neighboring object has a second electric potential. The shielding arrangement includes a resistor, a shield element for connection to the high voltage equipment via the resistor, and a capacitor connected in parallel with the resistor. A resistance of the resistor and a capacitance of the capacitor together define a time constant in a range of 10 μs-50 ms.
Claims20
A shielding arrangement for a piece of high voltage equipment spaced from a neighboring object, wherein the piece of high voltage equipment has a first electric potential and the neighboring object has a second electric potential, the shielding arrangement comprising:
- a resistor;
- a shield element for connection to the piece of high voltage equipment via the resistor;
- and
- a capacitor connected in parallel with the resistor, wherein a resistance of the resistor and a capacitance of the capacitor together define a time constant in a range of 10 μs-50 ms.
A converter station comprising:
- a converter configured to convert between an alternating current and a direct current, the converter comprising a plurality of converter valves having a first electric potential;
- an enclosure enclosing the converter, the enclosure having a second electric potential;
- and
- a shielding arrangement located between the enclosure and at least one converter valve of the converter valves, the shielding arrangement comprising a shield element connected to the at least one converter valve via a resistor and a capacitor that are connected in parallel, wherein a resistance of the resistor and a capacitance of the capacitor together define a time constant in a range of 10 μs-50 ms.
Dependencies are inferred from the claim text.