Disclosed is a system for stabilizing a power distribution network. The network is supplied at least partially by a renewable energy source. The system comprises a bidirectional AC-DC power conversion system between a supply 5 side distribution network and a load side grid. for converting a supply side AC voltage, at a supply side frequency. to a load side DC voltage; a voltage regulator for regulating the load side DC voltage; and a supply side control loop comprising at least one of a frequency control loop and a voltage control loop for making a measurement of a respective one of the supply side frequency and 10 supply side AC voltage. and controlling bidirectional power transmission between the bidirectional AC-DC power conversion system and one or more DC loads connected to the load side grid. based on the measurement from the respective frequency control loop and/or voltage control loop.