13 COMSOL MULTIPHYSICS OCTOBER 2018 NATIONAL GRID MODELS UNDERGROUND CABLE ROUTES The use of simulation to accurately predict the rating of underground electric cables within clear safety margins is enabling National Grid to maximize output, ensure reliability, and keep costs as low as possible. By JENNIFER HAND Figure 1. A section of a high-voltage cable system in a tunnel (top) and buried (bottom). IF HOMEOWNERS PLUGGING IN new entertainment and kitchen devices were asked to describe their expectation of household electricity, the answers might well include the words “safe,” “reliable,” and “affordable.” Managing the electrical grid, ensuring that it matches demand throughout the day, and keeping voltage and frequency within acceptable limits are fundamental for safety, rel

Join for free to read