标题：A framework of utilizing distribution power systems as reactive power prosumers for transmission power systems
作者：Zhou, Yu; Li, Zhengshuo; Yang, Ming
作者机构：[Zhou, Yu; Li, Zhengshuo; Yang, Ming] Shandong Univ, Sch Elect Engn, Jinan 250061, Peoples R China.
通讯作者：Li, Zhengshuo;Li, Zhengshuo
通讯作者地址：Li, ZS (corresponding author), Shandong Univ, Sch Elect Engn, Jinan 250061, Peoples R China.
来源：INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
关键词：Distributed energy resources; Linear DistFlow; Reactive power potential;; Reactive power optimization; Two-stage robust optimization
摘要：With the increasing penetration of distributed energy resources (DERs), transmission power systems (TPSs) may lack reactive power resources. The concept that distribution power systems (DPSs) could provide adjustable reactive power for its upstream TPS was recently proposed. However, accurately evaluating the reactive power potential (RPP) of a DPS is computationally challenging. This paper proposes a framework to leverage DPSs as reactive power prosumers for the TPS. To resolve the computation challenge, we propose a two-stage linear robust optimization method to evaluate the RPP, where linear DistFlow is used for a lighter computational burden. The uncertainty in DERs and the boundary-bus voltage can also be handled. Then, how the TPS utilizes the DPS's RPP in the reactive power optimization problem and how a DPS tracks the TPS's reactive power command are discussed. Case studies show that a DPS is workable as a reactive power prosumer even with notable uncertainty in the DERs, and the proposed linear evaluation method manages to evaluate the RPP fast with reasonable accuracy.