期刊
IEEE ELECTRIFICATION MAGAZINE
卷 9, 期 2, 页码 62-71出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/MELE.2021.3070938
关键词
Reactive power; Tracking loops; Regulators; Time measurement; Velocity measurement; Time factors; Synchronization
资金
- U.S. Department of Energy, Solar Energy Technologies Office [DE-EE0009025]
The global expansion of inverter-based resources (IBRs) poses interesting challenges for planning and operating large power systems. The retirement of conventional power plants leads to reduced system strength, impacting how IBR controls behave. IBRs must inject their share of active and reactive power under normal conditions to maintain grid stability.
The global proliferation of inverterbased resources (IBRs) presents some interesting challenges that may be faced in planning and operating the bulk power system. The continued retirement of conventional fossil-fueled, synchronous-generator based power plants will result in a reduction in both available short circuit strength in the network and available energy injection that helps arrest the decline of frequency following a loss of generation. The impact of reduction in system strength on the behavior of IBR controls has been a topic of extensive research over the past decade. In simple terms, to inject the demanded active and reactive power, as determined by high-level controls, a conventional IBR control architecture makes use of a phase-locked loop (PLL) to track the phase-angle of the grid voltage and in turn ensure that the current injection by the IBR is synchronized with the grid. Moreover, fast inner current control regulators are used to ensure the IBR is current regulated and injecting the correct magnitude of current as demanded by its high-level controls. Since IBRs are interfaced to the grid with power electronic devices, and these power electronic devices can be damaged by excessive overcurrent in a relatively short time, the cycle of measurement and reaction must have a fast response time to prevent an extreme overcurrent condition. An inverter that can inject its share of active power (P) and reactive power (Q) successfully under normal grid conditions is said to follow the grid.
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