Use of synchronous motors to control power management system

Patent metadata

Field	Value
Publication number	US-12176715-B2
Application number	US-202318188086-A
Country	US
Kind code	B2
Filing date	Mar 22, 2023
Priority date	Mar 22, 2023
Publication date	Dec 24, 2024
Grant date	Dec 24, 2024

Abstract

A distribution system includes: at least one Power Management System (PMS) that controls electrical power transmitted by the distribution system; and a first power station located at an onshore platform including an onshore terminal that distributes electric power to the first power station and to at least one onshore load, a plurality of onshore reactors that monitor inbound reactive power received from the onshore terminal or that monitor outbound reactive power sent to a remote location, and an onshore synchronous motor that operates on the inbound reactive power received from the onshore terminal.

First claim

What is claimed:

1. A distribution system, the system comprising:
at least one Power Management System (PMS) that controls electrical power transmitted by the distribution system;
a first power station located at an onshore platform, comprising:
an onshore terminal that distributes electric power to the first power station and to at least one onshore load,
a plurality of onshore reactors that monitor inbound reactive power received from the onshore terminal or that monitor outbound reactive power sent to a remote location, and
an onshore synchronous motor that operates on the inbound reactive power received from the onshore terminal;

a second power station located at an offshore platform which is located at the remote location, the second power station comprising:
an offshore terminal that receives electric power from the first power station and that delivers electric power to at least one offshore load,
a plurality of offshore reactors that monitor inbound reactive power received from the first power station, and
an offshore synchronous motor that operates on the inbound reactive power received from the first power station; and

at least one submarine cable connected between the first power station and the second power station, wherein
the at least one PMS monitors compensation reactive power in the plurality of onshore reactors, the onshore synchronous motor, the plurality of offshore reactors, and the offshore synchronous motor.

2. The system of claim 1 , wherein the at least one PMS requests an excitation system of the onshore synchronous motor and the offshore synchronous motor, the plurality of onshore reactors, and the plurality of offshore reactors to respond during a change in a voltage.

3. The system of claim 1 , wherein the at least one PMS requests only an excitation system of the onshore synchronous motor and the offshore synchronous motor to react against a variation of the inbound reactive power received from the onshore terminal and a variation of the inbound reactive power received from the first power station.

4. The system of claim 1 , wherein
the first power station comprises four onshore reactors and
the second power station comprises two offshore reactors.

5. The system of claim 4 , wherein the system further comprises
a first PMS located at the first power station and
a second PMS located at the second power station.

6. The system of claim 5 ,
wherein the first PMS located at the first power station controls the four onshore reactors, the onshore synchronous motor, the two offshore reactors, and the offshore synchronous motor, and
wherein the second PMS located at the second power station is a hot standby for the first PMS.

7. The system of claim 1 , wherein the system further comprises two submarine cables connected between the first power station and the second power station.

8. The system of claim 1 , wherein the at least one PMS
monitors an electrical parameter representative of a performance of the at least one submarine cable and
adjusts a reactive compensation of one or more of the plurality of onshore reactors, the onshore synchronous motor, the plurality of offshore reactors, and the offshore synchronous motor to control the power distributed between the first power station and the second power station.

9. The system of claim 8 , wherein the electrical parameter is a frequency of transmission of the power or a voltage of transmission of the power.

10. The system of claim 1 , wherein the at least one PMS dynamically adjusts compensation reactive power in the plurality of onshore reactors, in the onshore synchronous motor, in the plurality of offshore reactors, and in the offshore synchronous motor to maintain a total reactive power of the distribution system at or below a predetermined threshold.

11. A method for distributing electrical power to a remote location from an onshore platform, the method comprising:
configuring at least one Power Management System (PMS) to control electrical power transmitted between a first power station and a second power station;
installing the first power station located at an onshore terminal;
distributing electric power to the first power station and to at least one onshore load;
monitoring, by the at least one PMS, inbound reactive power received from the onshore terminal to the first power station or outbound reactive power sent from the first power station to one or more remote locations;
installing the second power station at an offshore platform, the offshore platform being located at a remote location;
connecting at least one submarine cable between the first power station and the second power station;
receiving electric power from the first power station at the second power station through the at least one submarine cable;
delivering electric power from the second power station to at least one offshore load; and
monitoring, by the at least one PMS, inbound reactive power received from the first power station at the second power station, wherein
the first power station comprises:
four onshore reactors; and
an onshore synchronous motor, and

the second power station comprises:
two offshore reactors; and
an offshore synchronous motor.

12. The method of claim 11 , further comprising: dynamically adjusting, by the at least one PMS, compensation reactive power in the four onshore reactors, the onshore synchronous motor, the two offshore reactors, and the offshore synchronous motor to maintain a total reactive power of the distribution system at or below a predetermined threshold.

13. The method of claim 11 , further comprising: configuring two PMSs to control the electrical power distributed between the two power stations, a first PMS being located at the first power station and a second PMS being located at the second power station.

14. The method of claim 13 , further comprising:
controlling, by the first PMS located at the first power station, the four onshore reactors, the onshore synchronous motor, the two offshore reactors, and the offshore synchronous motor; and
performing, by the second PMS located at the second power station, a hot standby function for the first PMS upon disconnection of the first PMS.

15. The method of claim 11 , further comprising: connecting two submarine cables between the first power station and the second power station.

16. The method of claim 12 , further comprising:
monitoring, by the at least one PMS, an electrical parameter representative of a performance of the at least one submarine cable; and
adjusting, by the at least one PMS, a reactive compensation of one or more of at least two onshore reactors, of the onshore synchronous motor, of at least two offshore reactors, and of the offshore synchronous motor to control the power distributed between the first power station and the second power station connecting two submarine cables between the first power station and the second power station.

17. The method of claim 16 , wherein the electrical parameter is a frequency of transmission of the power or a voltage of transmission of the power.

Assignees

• Saudi Arabian Oil Co

Inventors

• Saleh Yaseen
• Khardawi Wasseem Ali

Classifications

• H02J13/12

  Monitoring network conditions, e.g. electrical magnitudes or operational status · CPC title

• H02J3/18 Primary

  Arrangements for adjusting, eliminating or compensating reactive power in networks · CPC title

• Y02E40/30

  Reactive power compensation · CPC title

• H02J3/381

  Dispersed generators · CPC title

• H02J13/00002

  Electricity · mapped topic