Internal electrification scheme for power generation plants
First Claim
1. An apparatus for use in an electrical power generation plant, said apparatus comprising:
- at least two adjustable speed drives, each connected, on an alternating current side, to a respective auxiliary motor;
at least one reactive power consuming auxiliary device connected to an alternating current bus;
a single controller; and
a bus converter converting alternating current to direct current and vice versa between said alternating current bus and a direct current bus; and
at least two electrical power sources each coupled to said direct current bus through a respective converter, where both said at least two electrical power sources are configured to provide power to said direct current bus;
one of said at least two electrical power sources comprises a tertiary winding of a generator of said electrical power generation plant; and
each of said at least two adjustable speed drives is connected, on a direct current side, to said direct current bus;
wherein said controller is coupled to said at least two adjustable speed drives, to said at least one reactive power consuming auxiliary device, to at least one of the respective converters coupled to said at least two electrical power sources, and to said bus converter;
said controller controls the converter coupled to said generator based on a desired reactive power of the electrical power generation plant to reduce distribution of reactive power consumption over the electrical power generation plant.
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Accused Products
Abstract
An apparatus for use in an electrical power generation plant. The apparatus includes: at least two adjustable speed drives, each connected, on an alternating current side, to an associated auxiliary motor; at least one reactive power consuming auxiliary device connected to an alternating current bus; a controller; a converter for converting alternating current to direct current or vice versa between the alternating current bus and a direct current bus; and at least one electrical power source arranged to provide power to the direct current bus. Each of the at least two adjustable speed drive is connected, on a direct current side, to the direct current bus.
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Citations
15 Claims
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1. An apparatus for use in an electrical power generation plant, said apparatus comprising:
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at least two adjustable speed drives, each connected, on an alternating current side, to a respective auxiliary motor; at least one reactive power consuming auxiliary device connected to an alternating current bus; a single controller; and a bus converter converting alternating current to direct current and vice versa between said alternating current bus and a direct current bus; and at least two electrical power sources each coupled to said direct current bus through a respective converter, where both said at least two electrical power sources are configured to provide power to said direct current bus; one of said at least two electrical power sources comprises a tertiary winding of a generator of said electrical power generation plant; and each of said at least two adjustable speed drives is connected, on a direct current side, to said direct current bus; wherein said controller is coupled to said at least two adjustable speed drives, to said at least one reactive power consuming auxiliary device, to at least one of the respective converters coupled to said at least two electrical power sources, and to said bus converter; said controller controls the converter coupled to said generator based on a desired reactive power of the electrical power generation plant to reduce distribution of reactive power consumption over the electrical power generation plant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification