面向低压配电网的以产消者为中心的灵活动态运行包络
Prosumer-Centric Flexible Dynamic Operating Envelopes for Low-Voltage Distribution Networks
AI总结：
针对分布式能源资源占比增加使低压配电网维持网络约束成挑战的问题，提出用灵活优化框架计算灵活动态运行包络的方法，能计算产消者与电网功率交换上下限，验证表明该方法可减少削减和运营成本并维持电压。
AI中文摘要：
随着分布式能源资源（DERs）在配电网中的占比增加，维持网络约束成为挑战。动态运行包络（DOEs）成为有前景的解决方案，由配电网运营商计算并施加产消者与配电网之间动态变化的功率交换进出口限制。现有DOE方法常需产消者向运营商报告期望功率交换，计算出的DOE限制通常不超报告值。但因可再生能源发电和负荷需求不确定，实时运行中这些限制可能导致不必要的发电和负荷削减。本文通过使用权衡最优性与灵活性的灵活优化框架计算灵活DOEs解决此局限。该方法计算每个产消者与电网之间有功和无功功率交换的上下限，使报告值处于上下限之间即可满足网络约束。在改进的澳大利亚低压配电网验证了灵活DOE，与非灵活DOE相比，该框架在减少削减和总运营成本、维持电压幅值在期望范围内方面性能更优。
英文摘要：
As the share of distributed energy resources (DERs) increases in the distribution network, maintaining compliance with network constraints has become a challenge. In this context, dynamic operating envelopes (DOEs) have emerged as a promising solution, where the distribution network operator (DNO) computes and imposes a dynamically varying import and export limit on power exchange between prosumers and the distribution network. Existing DOE approaches often require the prosumers to report their desired power exchange to the DNO, which then computes DOE limits that typically do not exceed the reported values. However, due to uncertain renewable generation and load demand, such DOE limits can potentially result in unnecessary curtailment of generation and load during real-time operation. This work addresses this limitation by computing flexible DOEs using a flexible optimization framework that trades off optimality with flexibility. The proposed approach computes both upper and lower limits on the active and reactive power exchange between each prosumer and the grid, and tries to contain the reported values between the upper and lower limits. As long as the power exchange resides within the DOE limits, network constraints are satisfied. The proposed flexible DOE is validated on a modified Australian low-voltage distribution network. Compared to non-flexible DOE, the proposed framework demonstrates superior performance in reducing curtailment and total operational costs while consistently maintaining voltage magnitudes within desired limits.
