大容量电力系统中基于逆变器的资源的动态特性.第2部分:次同步和超同步控制交互作用

[中文适用范围]： 基于相互作用现象和频率范围，IEC 63401 本部分（技术报告）涵盖逆变接口发电机（例如风电和光伏）中的“控制相互作用”， resulting oscillation 频率低于系统频率的两倍。SSCI 可分类为：1) 由双馈感应发电机（DFIG）风电机组变流器控制与串联补偿网络之间的相互作用引起的 SSCI；2) 涉及全功率变流器（FSC，包括第 4 类风电机组或光伏发电机）的 SSCI，由风电机组或太阳能 PV 的 FSC 控制与弱交流电网之间的相互作用引起。 [外文原描述]： IEC TR 63401-2:2022, which is a technical report, covers the "control interactions" in converter interfaced generators e.g, wind and PV with the frequency of the resulting oscillation below twice the system frequency. SSCI can be categorized into: 1) SSCI in DFIG is caused by the interaction between DFIG wind turbine converter controls and the series compensated network. 2) SSCI involving FSC (both type-4 wind turbine or PV generators) is caused by the interaction between wind turbine or solar PV's FSC controls and weak AC grid. This technical report is organized into nine clauses. Clause 1 gives a brief introduction and highlights the scope of this document. Clause 4 presents the historical background of various types of subsynchronous oscillation (SSO) and revisits the terminologies, definitions, and classification in the context of classical SSR and emerging SSCI issues to better understand and classify the emerging interaction phenomena. Clause 5 provides the description, mechanism, and characteristics of the SSCI phenomenon in the framework of real-world incidents, including the SSCI events in the ERCOT, Guyuan, and Hami wind power systems. Clause 6 proposes two benchmark models to study the SSCI DFIG and FSC-based wind turbines or PV generators. Clause 7 gives an overview of existing and emerging modeling and stability analysis approaches to investigate the SSCI phenomenon. Clause 8 outlines various techniques to mitigate the SSCI. It discusses various SSCI mitigation schemes, such as bypassing the series capacitor, selective tripping of WTGs, generator, and plant-level damping control schemes. Clause 9 highlights the need for future works towards standardization of terms, definitions, classification, analysis methods, benchmark models, and mitigation methods.