A system for controlling a microgrid includes microgrid assets and a tieline for coupling the microgrid to a bulk grid; and a tieline controller coupled to the tieline. A seal ring has a base and a longitudinal axis extending therethrough, a radially outer portion, and an inner seal. A suspension is stored only in part of all the chambers through, that is, the chamber, and a sealing film 21 having the outline almost identical with the outline of the outer peripheral wall is laminated to the tail end surfaces of the outer peripheral wall and the partition walls. The device adjusts a time slot assignment for the particular node in the channel hopping schedule based on predicted demand change and the identified time frame associated with the predicted time slot demand change. Each of the read port circuits is coupled to receive the at least one bit from each of the first memory cells and each of the second memory cells, and each of the read port circuits is configured to output the at least one bit from a selected memory cell of the first memory cells and the second memory cells responsive to a plurality of wordline signals coupled to the read port circuit.