The existing distribution network of power system urgently needs solving the problem of large-scale access of distributed generators.Since the current distribution network in general adopts the closed-loop mode in the design and open-loop mode in the operation

serious unbalance of feeder power in the distribution network occurs

which cannot be solved effectively by such traditional control method as conventional switch etc

while the feeder load distribution can be balanced effectively by flexible multi-state switch.In view of this issue

in this paper

a kind of feeder interconnection control strategy for distribution network based on flexible multi-state switch（FMSS） is proposed.On the basis of discussing the principle and topological structure of FMSS access to distribution network

the mechanism of power exchange between switch and two feeders is studied

and the corresponding control strategy is designed so that FMSS can synchronously realize active power flow regulation and reactive power compensation in distribution network.The simulation model and test platform of FMSS are built to verify the feasibility and validity of feeder interconnection control strategy in distribution network.It is shown by the experimental resultthat the proposed feeder interconnection control strategy based on FMSS switches can achieve better active power flow regulation and reactive power compensation.