A branch flow model (BFM) is used to formulate the AC power flow in general networks. For each branch/line, the BFM contains a nonconvex quadratic equality. A mathematical formulation of its convex ...

Watch our guide to Formula E which explains how exciting features like Attack Mode and Fanboost can affect the in-race action. Watch live coverage of the Marrakesh E-Prix on BBC Two from 13:30 GMT ...