论文标题
不平衡的分销网络中的DER可行区域具有不确定的线阻抗
Feasible Region for DERs in Unbalanced Distribution Networks with Uncertain Line Impedances
论文作者
论文摘要
近年来，分布式能源资源（DERS）的快速发展给分销网络的运营带来了许多挑战，在这种情况下，操作信封（OES）作为通过虚拟发电厂促进DER集成的关键推动者引起了人们的关注。从几何上讲，OES固有地与可行区域（FR）概念相关，该区域描绘了一个量化所有DER的允许操作范围的区域。本文研究了如何基于线性不平衡的三相功率流模型来计算DER的FR，同时考虑了测量/估计网络阻抗的不确定性，从而导致可行的可行区域（RFR）。借助初始化的FR，提出的解决方案算法旨在通过解决基于Motzkin Transposition Therorem制定的非凸双线性问题来寻求RFR，并更新RFR，或者更新直至达到收敛。已经测试了两种情况，包括2个总线说明性网络和一个代表性的澳大利亚网络，以证明该方法的有效性。
The rapid development of distributed energy resources (DERs) has brought many challenges to the operation of distribution networks in recent years, where operating envelopes (OEs), as a key enabler to facilitate DER integration via virtual power plants, have attracted increasing attention. Geometrically, OEs are inherently linked to the feasible region (FR) concept, which depicts an area that quantifies the permissible operational ranges for all DERs. This paper studies how to calculate FR for DERs based on a linear unbalanced three-phase power flow model while considering uncertainties from measured/estimated network impedances, leading to the robust feasible region (RFR). With an initialised FR, the proposed solution algorithm aims to seek the RFR by solving a non-convex bilinear problem, formulated based on Motzkin Transposition Theorem, and updating the RFR alternatively until reaching convergence. Two cases, including a 2-bus illustrative network and a representative Australian network, have been tested to demonstrate the effectiveness of the proposed approach.
