期刊
IEEE TRANSACTIONS ON POWER SYSTEMS
卷 38, 期 6, 页码 5278-5289出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPWRS.2022.3232759
关键词
Frequency stability; real-time generation scheduling; renewable energy; time domain simulation
This paper proposes an integrated alternating current optimal power flow-based generation scheduling and time domain simulation framework to investigate the economic and reliability perspectives of managing the real-time power imbalance caused by the deployment of variable renewable energy. The study analyzes the impacts of adaptive frequency regulation and the requirements for secondary frequency regulation on generation cost and frequency response performance. The results demonstrate that an adaptive frequency regulation with a 5-minute economic dispatch interval is more appropriate and efficient in improving the frequency response and reducing generation cost with renewable energy.
The carbon neutrality objective requires a large amount of renewable energy integrated into power systems. The rapid deployment of variable renewable energy (VRE), such as solar photovoltaic (PV) generation, increases the system real-time power imbalance because of the random variation and uncertainty of VRE power generation. To manage this, system operators have two potential options: the first is a fast real-time generation dispatch to schedule generation resources with a small time interval to promptly follow the change of load and renewable power. The second is to procure adaptive frequency regulation services, such as secondary frequency regulation (SFR), based on the system variation and imbalance conditions to reduce the power imbalance and maintain the stable intra-interval frequency. This paper proposes an integrated alternating current optimal power flow-based generation scheduling and time domain simulation framework to investigate the economic and reliability perspectives of aforementioned two options. The impacts of the SFR requirements on the generation cost and frequency response performance are analyzed. In addition, the SFR provided by the PV generation is investigated. The uncertainty of the PV power output is considered using chance constraints to guarantee the real-time delivery of its frequency regulation services. The framework is tested in the IEEE 39-bus network with a large-scale PV power plant. The simulation results demonstrate that the small real-time generation dispatch interval does not necessarily improve the system frequency response and cannot maintain stable frequency. An adaptive frequency regulation with a 5-minute economic dispatch interval is more appropriate and efficient to reduce the generation cost and improve the frequency response with renewable energy.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据