Method for operating an electrical power supply network
AssigneeSchneider Electric Sachsenwerk GmbH
InventorUwe Kaltenborn
Life of this patent
Estimating the term…
Abstract
A method for operating an electrical power supply network is described. The power supply network has several levels of different voltages. The levels are interconnected by switches. A first switch is made so that the maximum interruptible short-circuit current of the first switch is smaller than the maximum flowing short-circuit current. In the event of failure, a test is made as to whether the short-circuit current presently flowing through the first switch is smaller than the maximum interruptible short-circuit current. The first switch will remain closed if this is not the case, and the first switch will be opened if this is the case.
Claims21
A method for operating an electrical power supply network, the power supply network including a plurality of levels with different voltages, the levels being connected via switches, a first of the switches being embodied such that a maximum interruptible short-circuit current of the first switch is relatively smaller than a maximum flowing short-circuit current, the method comprising:
- carrying out a test, in a case of a failure, to determine whether the short-circuit current presently flowing through the first switch is relatively smaller than the maximum interruptible short-circuit current;
- and
- maintaining the first switch in the closed position upon determining, from the test, that the short-circuit current presently flowing through the first switch is not relatively smaller than the maximum interruptible short-circuit current;
- and
- opening the first switch to an open position upon determining, from the test, that the short-circuit current presently flowing through the first switch is relatively smaller than the maximum interruptible short-circuit current.
An electrical power supply network, the power supply network including a plurality of levels with different voltages, the electrical power supply network comprising:
- a plurality of switches, connecting the levels, a first switch of the plurality of switches being embodied such that a maximum interruptible short-circuit current of the first switch is relatively smaller than a maximum flowing short-circuit current;
- and
- at least one device to carry out a test, in case of a failure, to determine whether the short-circuit current presently flowing through the first switch is relatively smaller than the maximum interruptible short-circuit current;
- and to influence the first switch in such a way that the first switch remains closed upon the at least one device determining, from the test, that the short-circuit current presently flowing through the first switch is not relatively smaller than the maximum interruptible short-circuit current and to influence the first switch in such a way that the first switch is opened upon the at least one device determining, from the test, that the short-circuit current presently flowing through the first switch is relatively smaller than the maximum interruptible short-circuit current.
A switch for an electrical power supply network, the power supply network including a plurality of levels with different voltages, the levels being connected via a plurality of switches including the switch, the switch being embodied such that a maximum interruptible short-circuit current of the switch is relatively smaller than a maximum flowing short-circuit current, wherein the switch remains closed upon a test being carried out, in case of a failure, which determines that the short-circuit current presently flowing through the switch is not relatively smaller than the maximum interruptible short-circuit current, and wherein the switch is opened the test determining that the short-circuit current presently flowing through the switch is relatively smaller than the maximum interruptible short-circuit current.
Dependencies are inferred from the claim text.