The relays command requires Ns = 2 fuzzy subsets. Cjk = (grid,PVP) is the kth fuzzy
subset, k = {1, 2}, of the jth appliance relay. These fuzzy subsets cover the fuzzy domain
Z = [0, 1] and verify 8z ¼ ESj 2 Z;PNs
k¼1lCjk ðzÞ ¼ 1,where ESj is the command given to the
jth appliance relay and lCjk is the membership function