Subsea electrical distribution system operable to supply power to subsea load from plurality of sources
First Claim
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1. A subsea system, comprising:
- a subsea electrical distribution system, comprising;
a first subsea circuit breaker module operable to supply alternating current (“
AC”
) to a subsea load, comprising;
a first busbar electrically coupled to a subsea AC power cable;
a first subsea circuit breaker electrically coupled to the first busbar to supply power to a first subsea load from the first busbar;
a direct current (“
DC”
)-to-AC converter electrically coupled to a subsea DC power cable;
a second busbar electrically coupleable to the DC-to-AC converter;
a second subsea circuit breaker electrically coupled to the second busbar to supply power to a second subsea load from the second busbar; and
a cross-connect selectively operable to couple the first busbar to the second busbar, wherein the first subsea circuit breaker module is operable to selectively supply power to the second subsea load from the subsea AC power cable or the subsea DC power cable.
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Abstract
A system for coupling electrical power subsea. The system comprises a subsea electrical distribution system having at least one modular circuit breaker assembly. The modular circuit breaker assembly may receive power from one or both of a subsea AC power cable and a subsea DC power cable. If power is lost from one subsea power cable, the modular circuit breaker assembly enables power to be provided to subsea loads from the other subsea power cable. The system comprises a subsea motor operable to drive a subsea pump or compressor.
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Citations
21 Claims
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1. A subsea system, comprising:
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a subsea electrical distribution system, comprising; a first subsea circuit breaker module operable to supply alternating current (“
AC”
) to a subsea load, comprising;a first busbar electrically coupled to a subsea AC power cable; a first subsea circuit breaker electrically coupled to the first busbar to supply power to a first subsea load from the first busbar; a direct current (“
DC”
)-to-AC converter electrically coupled to a subsea DC power cable;a second busbar electrically coupleable to the DC-to-AC converter; a second subsea circuit breaker electrically coupled to the second busbar to supply power to a second subsea load from the second busbar; and a cross-connect selectively operable to couple the first busbar to the second busbar, wherein the first subsea circuit breaker module is operable to selectively supply power to the second subsea load from the subsea AC power cable or the subsea DC power cable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A subsea system, comprising:
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a subsea electrical distribution module, comprising; a first busbar selectively coupleable to a first subsea power cable; a second busbar selectively coupleable to a second subsea power cable, wherein the second busbar is configured to supply power to a subsea load; and a cross-connect selectively operable to couple the first busbar and the second busbar, wherein the subsea electrical distribution module is configured to selectively supply power to the subsea load from the first subsea power cable or the second subsea power cable. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A subsea system, comprising:
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a magnetic bearing module for providing power to a magnetic bearing supporting a rotating shaft driven by a subsea motor; and a first subsea circuit breaker module, comprising; a first busbar electrically coupled to a subsea AC power cable; a first subsea circuit breaker electrically coupled to the first busbar to supply AC power to the magnetic bearing module; a direct current (“
DC”
) power supply electrically coupled a subsea DC power cable and to the magnetic bearing module to supply DC power to the magnetic bearing module.
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Specification