| 摘要 |
An umbilical cable 4 containing an optical communication line 3 and a power feeding line 5 is connected to a subsea hub 1, aka a power and communication distribution module (PCDM). A wavelength division multiplexed (WDM) signal is transmitted over the optical communication line. A WDM demultiplexer 2 in the PCDM splits a received WDM signal into its component wavelengths. Each of the signals output by the demultiplexer is transmitted over a respective optical communication line 101-10n to a respective section 81-8n of a subsea production control system (SPCS) 9. Alternatively, each of the signals output by the demultiplexer is converted (111-11n, Fig. 2) to an electrical signal and the electrical signals (131-13n, Fig. 2) are transmitted to separate sections of the SPCS. The PCDM also distributes power 7 from the power feeding line to each of the sections of the SPCS. The PCDM may include a power boost module 6 for stepping up the voltage of the power feed. |
