供电公司具有提前通知选择的可中断负荷决策模型

Power suppliers' decision-making model for interruptible load with early notification option

在电力系统可中断负荷管理中,提前通知中断用户供电可有效减少用户停电损失.采用随机优化理论,研究具有提前通知选择时供电公司对于可中断负荷的最优决策模型,并给出模型的解析解.算例仿真表明,供电公司采用可中断负荷管理,可以提高其期望利润,而且与没有提前通知选择的可中断负荷管理相比,具有提前通知选择的可中断负荷管理更能提高供电公司的期望利润.用户的临时中断损失与提前通知中断损失相差越大,则提前通知中断选择的价值也越大,从而供电公司会选择购买较多的可中断负荷,并获得较高的期望利润.算例分析结果表明了该模型的合理性和有效性.

In the interruptible load management （ILM） of power systems, customers＇ shortage cost could be significantly reduced by early notification of curtailment. An optimal decision-making model for the ILM with an early notification option is introduced and its analytical solution is presented using stochastic optimization theory in this paper. Numerical simulations show that the power supplier＇ expected profit can be improved by the ILM. Furthermore, the ILM with an early notification option can achieve larger expected profits for power suppliers as compared to the ILM without an early notification option. In addition, the larger the difference between consumers＇ loss in early notification interruption and interruption close to delivery time, the more valuable the early notification option. As a result, the power supplier would purchase more interruptible loads, and can get a larger expected profit. These results also validate the reasonableness and effectiveness of the proposed model.