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首页> 外文期刊>Electric power systems research >Real-time small signal stability analysis of the power electronic-based components in contemporary distribution systems
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Real-time small signal stability analysis of the power electronic-based components in contemporary distribution systems

机译：当代配电系统中基于电力电子的组件的实时小信号稳定性分析

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摘要

Power Electronic-based Components (PECs) can provide excellent features such as, load regulation, high power factor, and transient performance, especially in the large scale distribution systems. Accordingly, contemporary power distribution systems or Power Electronic-based Distribution Systems (PEDS) are highly penetrated with the Renewable Energy Resources (RERs) as well as innovative PECs such as, Solid State Transformers (SSTs) and inverters. Therefore, they are prone to exhibit negative impedance instability in consequence of high power factor and constant-power nature of the individual components in the system. Thus, small-signal as well as large-signal stability assessments of the PEDS play prominent role in operational (real-time) stage of the systems analyses. In this paper new small-signal stability analysis technique is developed based on d - q impedance measurement and Nyquist criterion that is capable of investigating the systems' small-signal stability in real-time. Furthermore, small-signal stability of a sample PEDS comprised from a SST connected to the source and variable load is investigated through the proposed method and with utilizing Real-Time Digital Simulator (RTDS) platform.
机译：基于电力电子的组件（PEC）可以提供出色的功能，例如负载调节，高功率因数和瞬态性能，尤其是在大型配电系统中。因此，当代的配电系统或基于电力电子的配电系统（PEDS）在可再生能源（RER）以及诸如固态变压器（SST）和逆变器之类的创新性PEC中得到了高度渗透。因此，由于系统中各个组件的高功率因数和恒定功率特性，它们易于表现出负阻抗不稳定性​​。因此，PEDS的小信号和大信号稳定性评估在系统分析的操作（实时）阶段起着重要作用。本文基于d-q阻抗测量和Nyquist准则开发了一种新的小信号稳定性分析技术，该技术能够实时研究系统的小信号稳定性。此外，通过提出的方法并利用实时数字仿真器（RTDS）平台，研究了由连接到电源的SST和可变负载组成的样本PEDS的小信号稳定性。

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