基于逆变器的分布式发电机与中压网络连接的电压极限诱发障碍分析:澳大利亚案例研究

IF 1.6 Q4 ENERGY & FUELS
Mir Toufikur Rahman, M. Gu, Moudud Ahmed, Kazi N. Hasan, Lasantha Gunaruwan Meegahapola
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引用次数: 0

摘要

基于逆变器的分布式发电机(IBDGs),主要是太阳能光伏发电,连接到中压(MV)电网中会给配电网络服务提供商(DNSPs)带来挑战,如违反电压限制,因此需要先进的网络管理策略来缓解这些挑战。要制定新策略,就必须从理论上分析因网络特性变化而导致的电压极限引起的 IBDG 连接障碍及其出口限制。作者提出了网络等效阻抗与 IBDG 在网络中的连接点之间的关系,并进一步探讨了网络等效阻抗与 IBDG 连接点引起的电压幅值之间的联系。作者还评估了中压网络中由电压极限引起的 IBDG 连接障碍,并提出了克服 IBDG 动态输出极限问题的解决方案。在 DIgSILENT PowerFactory 中分析了澳大利亚四个具有代表性的中压电网在不同情况下的情况,如 IBDG 位置的变化以及静态和动态输出限制。作者发现,连接在电网末端的 IBDG 在支持电网电压方面能取得更好的性能。具有动态输出限制的 IBDG 输出的能量是静态输出限制的三倍,这对 DNSP 和 IBDG 所有者都有利。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analysis of voltage limit‐induced barrier for connecting inverter‐based distributed generators to medium voltage networks: Australian case studies
Inverter‐based distributed generators (IBDGs), mainly solar photovoltaic, connected in medium‐voltage (MV) networks cause challenges, such as voltage limit violations, for distribution network service providers (DNSPs), and require advanced network management strategies to mitigate these challenges. A theoretical analysis of the voltage limit‐induced barrier to IBDG connection and their export limits due to the change in network characteristics is imperative for developing new strategies. The authors formulated a relationship between the network equivalent impedance and the IBDG's connection point in the network and further explored the link between the network equivalent impedance and voltage magnitude due to the IBDG connection point. The authors also assessed the voltage limit‐induced barrier to IBDG connections in MV networks and proposed solutions to overcome issues with the dynamic export limit of IBDGs. Four representative Australian MV networks are analysed in DIgSILENT PowerFactory under different scenarios, such as variation in IBDG location and static and dynamic export limits. The authors found that an IBDG connected at the end of the network can achieve better performance in supporting the network voltage. An IBDG with a dynamic export limit can export three times more energy than the static export limit, which benefits both the DNSPs and IBDG owners.
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来源期刊
IET Energy Systems Integration
IET Energy Systems Integration Engineering-Engineering (miscellaneous)
CiteScore
5.90
自引率
8.30%
发文量
29
审稿时长
11 weeks
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