Optimal Arrangement of Time-shiftable Loads for Photovoltaic Power

In recent years, with a rapid rise in power generation from distributed photovoltaic stations, there have been situations where the power users in the station area cannot consume photovoltaic power generation completely during the peak period of photovoltaic power generation. On the other hand, the energy storage support for the station areas is developing relatively slowly due to the high cost of energy storage facilities. For station areas with time-shiftable loads available, it is worth studying the optimal arrangement of time-shiftable loads as a low-cost and effective solution. Arranging time-shiftable loads from other periods to the peak period of photovoltaic power generation can effectively reduce the reverse peak power of the station area and the impact on the power grid, while not abandoning the generated photovoltaic energy. This paper finds the optimal arrangement through the greedy search algorithm, which can quickly and effectively solve the optimization. The solution has been proven to be the global optimal solution. Furthermore, by considering the distance between arrangements, the algorithm can be extended to a case evaluating the cost of adjustments. The algorithm was applied to the data from an on-site station area, and the reverse peak power was reduced as expected.