Abstract:

Traditional distribution networks undertake the function of distributing energy and providing electricity consumption, therefore the flowtransferringis unilateral. The increasing amount of distributed generation （DG） in todays highly complex restructured power networks change it to bidirectional flow. Due to the randomness and intermittence of DG, flow fluctuates wildly in a degree, which makes the distribution infrastructure cannot work in economical and efficient ways. For the better energy transferring ability of DG, provide high-quality power, Beijing Power Grid build the controllable and observable active distribution（ADN） in energy transferring and distribution operator system field, for the entire energy consumption of high-permeability DG, achieve the aim of efficient energy use and high-quality and high-reliability power supply.

Key words: active distribution networks, multi-source, distribution generation, energy internet, AC/DC hybrid smart grid