no code implementations • 10 Sep 2022 • Naihao Shi, Rui Cheng, LiMing Liu, Zhaoyu Wang, Qianzhi Zhang
Finally, a distributed consensus-based solution, based on the alternating direction method of multipliers (ADMM), for the AARVVC is applied to decide the inverter reactive power adjustment rule with respect to its active power.
no code implementations • 7 Jul 2022 • Qianzhi Zhang, Fankun Bu, Yi Guo, Zhaoyu Wang
To better consider the impacts of load and PV generation uncertainties on CVR implementation in distribution systems and provide less conservative solutions, this paper develops a data-based DRCC-CVR model with tractable reformulation and data enrichment method.
no code implementations • 11 Jan 2022 • Rui Cheng, Zhaoyu Wang, Yifei Guo, Qianzhi Zhang
It utilizes a non-diagonal symmetric positive definite matrix, developed from the Hessian matrix of the objective, to scale the gradient, and thus a fast convergence performance can be expected in this Newton-like algorithm.
no code implementations • 16 Jan 2021 • Qianzhi Zhang, Zixiao Ma, Yongli Zhu, Zhaoyu Wang
This paper proposes a service restoration model for unbalanced distribution systems and inverter-dominated microgrids (MGs), in which frequency dynamics constraints are developed to optimize the amount of load restoration and guarantee the dynamic performance of system frequency response during the restoration process.
no code implementations • 24 Dec 2020 • Qianzhi Zhang, Zhaoyu Wang, Shanshan Ma, Anmar Arif
This paper proposes a stochastic optimal preparation and resource allocation method for upcoming extreme weather events in distribution systems, which can assist utilities to achieve faster and more efficient post-event restoration.
no code implementations • 9 Nov 2020 • Qianzhi Zhang, Yifei Guo, Zhaoyu Wang, Fankun Bu
This paper proposes an asychronous distributed leader-follower control method to achieve conservation voltage reduction (CVR) in three-phase unbalanced distribution systems by optimally scheduling smart inverters of distributed energy resources (DERs).