Mitigation of voltage regulation challenges in distribution networks using battery energy storage systems

在过去的几十年里，减少温室气体排放已经引起了全球的关注。减少这些排放的一个关键因素是在发电方面转向可再生能源（RES），在运输方面转向低排放或零排放车辆。交通运输部门的电气化是目前减少交通运输排放的最可行的选择，因此插电式电动汽车（pev）的生产预计在未来几十年将大幅增加。然而，将大量的可再生能源和电动汽车充电站集成到现有的配电系统结构中，由于反向潮流、发电/消费间歇性以及对公用事业电压调节设备运行的干扰，会带来重大的电压调节挑战。尽管存在这些挑战，但其他考虑也显示出了希望。电池储能系统（BESS）可以成为电网稳定性和弹性的关键组成部分。能源存储技术的电网整合将减少可再生能源的间歇性，并防止多余的可再生能源在生产高峰期进入电网的浪费，但通过有效储存这些能源，需求很低。此外，将BESS集成到现有电网中，可以通过确保对电池充电至关重要的稳定和持续的电力供应，使pev的部署更加自信。为此，本项目旨在(1)将BESS纳入RES和pev高渗透率配电系统的电压调节研究中；(2)制定分布式电压调节方案，在BESS、RES、pev和公用调压装置的控制单元之间提供适当的协调。拟议的分布式控制将帮助配电公用事业公司减轻电压调节挑战，从而促进RES和pev高渗透到当前电网基础设施中的无缝集成。

Reducing greenhouse gas emissions have gained global interest over the last few decades. A key factor for reducing these emissions is shifting towards renewable energy resources (RES) in electricity generation and low or zero-emission vehicles in transportation. Electrification of the transportation sector is currently the most viable option for reducing transportation emissions and thus the production of plug-in electric vehicles (PEVs) is predicted to rise dramatically in the next few decades. However, integrating large levels of RES and PEVs charging stations into existing distribution system structure creates major voltage regulation challenges due to reverse power flow, power generation/consumption intermittency, and interference with the operation of utility voltage regulation devices. Despite these challenges, other considerations show promise. Battery Energy storage systems (BESS) can be a critical component of grid stability and resiliency. The grid integration of energy storage technologies would reduce the intermittency of RES and also prevent wastage of excess renewable energy feeding into the grid at times when production is at a peak, but demand is low by effectively storing this energy. In addition, integrating BESS into existing grids could enable confident deployment of PEVs by ensuring a stable and consistent supply of the electricity vital to charge their batteries. Toward that end, this project aims to (I) incorporate BESS in the voltage regulation studies of power distribution systems with high penetration of RES and PEVs , and (II) develop a distributed voltage regulation scheme to provide appropriate coordination among the control units of BESS, RES, PEVs and utility voltage regulation devices. The proposed distributed control will help the distribution utilities to mitigate the voltage regulation challenges and thus facilitate seamless integration for high penetration of RES and PEVs into the current grid infrastructure.