electricity market is a new issue or belong to "power system operation & planning" or others? Are there anyone know that? , m' C0 n8 M8 s: Q0 B. F2 |* ]) s* E # i. J" T: j# O; u$ fThen which area does OPF belong to? 0 i- ?$ D$ Y) `% B: T $ l; x: f" \7 {* \4 hSorry, I cannot type Chinese in this computer.