Analysis of Power Grid Voltage Stability with High Penetration of Solar PV Systems

2020 IEEE Industry Applications Society Annual Meeting Pub Date : 2020-10-10 DOI:10.1109/IAS44978.2020.9334716

S. Rahman, Saumajit Saha, S. Islam, M. Arif, M. Mosadeghy, A. Oo, M. Haque

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引用次数: 24

Abstract

Grid integration of solar photovoltaic (PV) systems has been escalating in recent years, with two main motivations: reducing greenhouse gas emission and minimizing energy cost. However, the intermittent nature of solar PV generated power can significantly affect the grid voltage stability. Therefore, intermittent solar PV power generation and uncertainties associated with load demand are required to be accounted to gain a holistic understanding on power grid voltage stability with high penetration of PV energy sources. This paper presents a framework for power grid voltage stability analysis considering uncertainties associated with PV power generation and load demand using Monte Carlo simulation. Commonly used voltage stability indicators such as critical eigen value, line loss, reactive power have been considered in the proposed framework. The proposed methodology has been verified by analysing voltage stability of IEEE 14 bus test system, with high penetration of PV energy sources and considering uncertainties associated with load demand. The results provide a clear insight to voltage stability of power grid with different penetration level of PV energy sources into the power grid.

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高渗透太阳能光伏系统电网电压稳定性分析

近年来，太阳能光伏发电系统的并网趋势不断升级，主要有两个动机:减少温室气体排放和降低能源成本。然而，太阳能光伏发电的间歇性会显著影响电网电压的稳定性。因此，需要考虑太阳能光伏发电的间歇性和与负荷需求相关的不确定性，以全面了解光伏能源高渗透下的电网电压稳定性。本文提出了一个考虑光伏发电和负荷需求不确定性的电网电压稳定性分析框架。在该框架中考虑了临界本征值、线损、无功功率等常用电压稳定指标。通过分析IEEE 14总线测试系统的电压稳定性，验证了所提出的方法，该系统具有光伏能源的高渗透率，并考虑了与负载需求相关的不确定性。研究结果揭示了不同光伏能源入网水平下电网电压稳定性的变化规律。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2020 IEEE Industry Applications Society Annual Meeting

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