Nonlinear and randomized pricing for distributed management of flexible loads
Nonlinear and randomized pricing for distributed management of flexible loads
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DOI：
10.1109/pesgm.2016.7741511
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发表时间：
2016-07
期刊：
影响因子：
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通讯作者：
D. Papadaskalopoulos;G. Strbac
中科院分区：
文献类型：
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作者：
D. Papadaskalopoulos;G. Strbac
只提供摘要形式。由于集中式架构的可扩展性和隐私限制，微电网内分布式能源的基于价格的管理正在不断取得进展。然而，柔性负荷对最低电价时段的集中响应产生了低效的解决方案。先前建议的一项措施对弹性负荷施加灵活性限制，可能会引起用户对可接受性和可行性的关注。本文开发了一种新颖的完全基于价格的方法，其中这种硬限制被软非线性价格信号所取代。该信号是根据不同柔性负载类型的运行特性定制的，分别对具有连续可调功率水平和可延迟周期的负载的需求平方和周期延迟持续时间进行惩罚。对于这两种类型的载荷，这种方法比柔性限制措施产生更有效的解决方案。对于后一种类型，非线性价格的随机化带来了额外的好处，特别是在低经营多样性的情况下。这些贡献得到了对微电网测试系统的案例研究的支持，该系统使用电动汽车和湿式电器作为上述灵活负载类型的代表性示例。
Summary form only given. Price-based management of distributed energy resources within microgrids is continuously gaining ground due to scalability and privacy limitations of centralized architectures. However, the concentration of flexible loads' response to the lowest-priced periods yields inefficient solutions. A previously proposed measure imposing a flexibility restriction on flexible loads might raise acceptability and feasibility concerns by the users. This paper develops a novel fully price-based approach where this hard restriction is replaced by a soft nonlinear price signal. This signal is customized to the operating properties of the different flexible load types by penalizing the square of the demand and the duration of cycle delay of loads with continuously adjustable power levels and deferrable cycles, respectively. This approach is shown to produce more efficient solutions than the flexibility restriction measure for both types of loads. For the latter type, randomization of the nonlinear prices brings additional benefits, especially in low operating diversity cases. These contributions are supported by case studies on a microgrid test system with electric vehicles and wet appliances used as representative examples of the above flexible load types.