Flexible Control Strategy of Large Power Intelligent Onshore Charging Facilities for Ship Grid Interaction

Abstract

The massive access of onshore charging facilities has caused grid heavy/overload problems. New onshore charging facilities access requests also encountered difficulties. In order to support the development of electric ships while ensuring the reliability of the power grid, this paper proposes a novel method to generate a strategy with the lowest control cost and higher success rate from the perspective of power grid dispatching instructions. First, a resilience assessment matrix is generated based on the historical electricity consumption data of onshore charging facilities to show the willingness to be regulated at each time period. Then, combined with the overlap with the base load peak, at the position of the medium voltage line, the load reduction allocation plan for each onshore charging facility is finally generated. It can be seen from the example that this strategy can effectively solve the heavy/overload problem caused by the charging load.