A Linearized Branch Flow Model Considering Line Shunts for Distribution System and Its Application in Volt/VAr Control

• DOI: 10.36227/techrxiv.19608495.v1
• Publication Date: 2022-04-21T16:30:54Z
• Authors: Hanyang Lin; Firdous Ul Nazir; Bikash Pal; Ye Guo

With the fast expansion of power grid and increasing complexity due to modern equipment, flow models with non-convexity long computing time are not suitable for network calculation optimization problems. Therefore, this paper proposes a linearized branch model (LBF) considering line shunts (LBFS). The strength LBF lies in its linear mathematical structure, hence convex nature, which is primarily achieved by regarding apparent as current magnitude. Moreover, accuracy nodal voltage magnitude significantly improved appropriately modeling shunt admittances equipment like transformers, capacitors distributed generators (DG). We show application scope LBFS controlling voltages through two-stage stochastic Volt/VAr control (VVC) problem DG output uncertainty. Since results VVC program, global solution guaranteed. Simulations that framework can optimally dispatch discrete devices, viz. substation transformers capacitors, also optimize decision rules real reactive DGs. Besides, efficiency compared traditional methods.