| 引用本文: | 徐万万,王斌,张良力,刘江.孤岛微电网中制氢负荷谐波功率分配策略[J].电力自动化设备,2023,43(12):46-52 |
| XU Wanwan,WANG Bin,ZHANG Liangli,LIU Jiang.Harmonic power distribution strategy of hydrogen production load in islanded microgrid[J].Electric Power Automation Equipment,2023,43(12):46-52 |
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| 摘要: |
| 制氢与微电网相结合是实现新能源高效消纳的重要途经之一。实际微电网的负荷优先级和电压质量要求存在差异，而制氢负荷接入会引入谐波功率，通过互联变换器(ILC)与高优先级直流子网相连，会出现直流母线多倍频脉动，其本质是谐波功率分配问题。目前已有功率分配策略大多致力于均分，忽略了高优先级子网的电压质量需求。为此，建立优先驱动的ILC功率协调控制模型，优化目标是使子网的总直流电压/交流频率偏差最小；建立制氢负荷模型，推导得到谐波视在功率的简化公式；基于谐波功率、子网优先级系数和谐波阻抗重塑理论，提出谐波功率在ILC和交流子网之间的自适应控制策略。通过硬件在环实验验证了所提策略的有效性。 |
| 关键词: 制氢负荷 孤岛微电网 互联变换器 谐波阻抗重塑 自适应控制 功率分配 |
| DOI：10.16081/j.epae.202310019 |
| 分类号: |
| 基金项目:国家自然科学基金面上项目(51877161)；湖北省自然科学基金青年项目(2021CFB030) |
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| Harmonic power distribution strategy of hydrogen production load in islanded microgrid |
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XU Wanwan1, WANG Bin1, ZHANG Liangli1, LIU Jiang2
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1.School of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan 430081, China;2.School of Electrical and Information Engineering, Wuhan Institute of Technology, Wuhan 430205, China
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| Abstract: |
| The combination of hydrogen production and microgrid is one of the important ways to realize the efficient consumption of renewable energy. The load priority and voltage quality requirements of the actual microgrid are different, and the hydrogen production load will introduce harmonic power, when they connect to the high-priority DC sub-network through the interlinking converter(ILC),the DC bus will have multiple frequency pulsation, which is essentially a harmonic power distribution problem. Most of the exis-ting power distribution strategies focus on power equalization, ignoring the voltage quality requirements of high-priority sub-network. Therefore, the power coordination control model of ILC with priority drive is established, and the optimization goal is to minimize the total DC voltage or AC frequency deviation of the sub-network. The hydrogen production load model is established and the simplified formula of harmonic appa-rent power is derived. Based on the harmonic power, the priority coefficient of sub-network and the harmonic impedance reshaping theory, an adaptive control strategy of harmonic power between ILC and AC sub-network is proposed. The effectiveness of the proposed strategy is verified by hardware-in-the-loop experiments. |
| Key words: hydrogen production load islanded microgrid interlinking converter harmonic impedance resha-ping adaptive control power distribution |
