The Migrate project: the challenges of operating a transmission grid with only inverter-based generation. A grid-forming control improvement with transient current-limiting control
The Migrate project: the challenges of operating a transmission grid with only inverter-based generation. A grid-forming control improvement with transient current-limiting control
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迁移项目：仅使用基于逆变器的发电来运营输电网的挑战。
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
A. Menze
中科院分区：
文献类型：
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作者：
G. Denis;T. Prévost;Marie;F. Xavier;X. Guillaud;A. Menze
可再生能源发电主要通过变流器连接。即使它们为电网提供越来越多的辅助服务，这些也可能不足以实现极高的渗透率。随着此类发电机组的份额迅速增长，未来一些同步区域有时可能会在没有同步电机的情况下运行。在这种情况下，系统行为将发生巨大变化，但仍必须以与今天相同的可靠性水平来确保稳定性。为了实现这一雄心勃勃的目标，逆变器的控制必须从根本上改变。无论是在稳态还是瞬态期间，逆变器都需要从跟随电网转变为引领电网行为。这种新型控制给转换器带来了额外的问题，本研究将解决这些问题。提出了一种解决方案，以允许系统稳定运行并在瞬态期间限制逆变器的请求。
Renewable generation is mainly connected through converters. Even if they provide more and more ancillary services to the grid, these may not be sufficient for extremely high penetrations. As the share of such generating units is growing rapidly, some synchronous areas could in the future occasionally be operated without synchronous machines. In such conditions, system behaviour will dramatically change, but stability will still have to be ensured with the same level of reliability as today. To reach this ambitious goal, the control of inverters will have to be changed radically. Inverters will need to move from following the grid to leading the grid behaviour, both in steady state and during transients. This new type of control brings additional issues on converters that are addressed in this study. A solution is proposed to allow a stable operation of the system together with a limited solicitation of inverters during transients.