Application of the CMARS (Cable Monitoring and Rating System) Concept to Advanced-Technology Cables (Volumes 1 and 2)

摘要

CMARS is the acronym for Cable Monitoring and Rating System, a sophisticated computer-based algorithm for monitoring temperatures in underground electric-power-transmission cables and dynamically updating cable ratings based on the monitored temperatures. CMARS was originally developed for oil-filled pipe-type cables. However, extensions to other types of underground cables can be made quite readily. The original batch-mode computer program was modified to accommodate different dynamic thermal models. Dynamic thermal models of other advanced-technology (HVDC, gas-insulated) have been developed and integrated into the modified CMARS software structure. Testing of the modified program and the newly developed thermal models has been carried out using simulated real-time data. For each cable design, a reasonable set of dimensional data was chosen, and a simulated time-history data file was created to represent the real-time data. Descriptions of outputs and sample outputs of these test runs are shown in the CMARS Program Modular Batch Version User's Manual, Volume 2 of this final report. (ERA citation 08:046000)