可再生能源并入高压电网的影响

G. Shafiullah
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引用次数: 8

摘要

由于使用化石燃料,特别是煤炭,二氧化碳排放到大气中,目前的电力系统造成了环境影响和全球变暖。因此,能够将更高比例的可再生电力纳入能源结构是当今的一个基本问题,因为这些能源对气候友好且无限。然而,可再生能源,特别是风能和太阳能的电力输出具有间歇性,带来了潜在的技术影响,影响到观察到的电力质量,包括电压波动、电力波动、配电变压器过载以及向电网注入电压和电流谐波。本研究利用电力系统仿真软件PSS Sincal开发了一个仿真模型,以调查大规模可再生能源(RE)渗透到澳大利亚昆士兰州罗克汉普顿电网的潜在不利影响。从模型分析中可以清楚地看出,大规模RE集成不仅对低压配电网产生影响,而且在电压波动、变压器过载、谐波注入等电能质量问题上也会对输配电、分配电和高压配电网产生影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Impacts of renewable energy integration into the high voltage (HV) networks
Current power systems creates environmental impacts as well as global warming due to utilisation of fossil fuels, especially coal, as carbon dioxide is emitted into the atmosphere. It is therefore a fundamental concern today to be able to bring higher percentages of renewable electricity into the energy mix as these sources are climate-frindly and unlimited. However, intermittent nature of power output from renewable energy sources, in particular wind and solar, introduces potential technical impacts that affect quality of power observed including voltage fluctuations, power fluctuations, overloading of distribution transformers and voltage and current harmonics injection into the network. This study developed a simulation model with power system simulation software PSS Sincal to investigate the potential adverse impact of large-scale renewable energy (RE) penetration into the Rockhampton power networks, Queensland, Australia. From the model analyses, it has been clearly evident that large-scale RE integration not only influence in the low voltage distribution network but it also influence in the transmission, subtransmission and high voltage (HV) distribution network in terms of power quality issues such as voltage fluctuations, overloading of transformers and injection of harmonics.
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