Static VAR Corrector
First Claim
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1. A system for providing reactive power compensation to a utility power network, the system comprising:
- a switch coupled to the utility power network;
a capacitor, coupled with the switch, for providing a controlled amount of reactive current based on conditions of the utility power network;
a switchable power dissipation device coupled in series to the capacitor and configured to provide a preselected amount of impedance to the reactive current for a predetermined duration when a line voltage on the utility power network drops below a threshold.
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Abstract
A system for providing reactive power compensation to a utility power network includes a switch coupled to the utility power network, and a capacitor coupled with the switch for providing a controlled amount of reactive current based on conditions of the utility power network. The system also includes a switchable power dissipation device coupled in series to the capacitor and configured to provide a preselected amount of impedance to the reactive current for a predetermined duration when a line voltage on the utility power network drops below a threshold.
84 Citations
27 Claims
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1. A system for providing reactive power compensation to a utility power network, the system comprising:
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a switch coupled to the utility power network; a capacitor, coupled with the switch, for providing a controlled amount of reactive current based on conditions of the utility power network; a switchable power dissipation device coupled in series to the capacitor and configured to provide a preselected amount of impedance to the reactive current for a predetermined duration when a line voltage on the utility power network drops below a threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for controlling a reactive power compensation device connected to a utility power network, the method comprising:
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detecting a low voltage condition on the utility power network; discharging a capacitive element in the reactive power compensation device, in response to the low voltage condition, to the utility power network for a first duration; and connecting a device to the utility power network to dampen resonances generated by the discharging of the capacitive element. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for providing reactive power compensation to a utility power network, the method comprising:
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providing a varying number of capacitors to supply a controlled amount of reactive current to the utility power network under a first line condition; and connecting a power dissipation device for a predetermined duration to provide impedance to the reactive current of each of the number of capacitors under a second line condition. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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Specification