Comparison of reactive power optimization control between local and system on distribution lines

For the shortage of local control strategy, a systematic control strategy considering reactive power compensation effect of the whole line was proposed in this paper. In the case of the compensation capacity and location determined, the goal of optimal reactive power running by controlling the capacitor was achieved, and an optimal capacitor switching model established which aimed at a minimum network loss. The model was solved by an improved TS algorithm. Capacitor switching, power loss and voltage conditions were solved with the above two strategies programmed by. NET, and compared under reactive power load level of a 10 kV line in a given period of time on a certain day. The results showed that the systematic control strategy had a more pronounced effect of the energy conservation on distribution lines under the same compensation position and capacity.