| 引用本文: | 李从善,和萍,金楠,武洁,陶玉昆,杨存祥,郭健.基于不平衡功率动态估计的直流幅值阶梯递增紧急功率支援[J].电力自动化设备,2018,(12): |
| LI Congshan,HE Ping,JIN Nan,WU Jie,TAO Yukun,YANG Cunxiang,GUO Jian.DC amplitude stepped incremental emergency power support based on dynamic estimation of unbalanced power[J].Electric Power Automation Equipment,2018,(12): |
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| 摘要: |
| 建立扰动下系统不平衡功率的扩张状态观测器，并对观测器参数进行设置，实现不平衡功率的实时准确估计；考虑影响直流紧急功率支援限制因素，优化紧急功率支援量，基于功率支援阶梯递增原则实现功率支援目标；根据扰动功率大小，通过定义阈值指标实现3种幅值阶梯递增支援方案的选择。在PSCAD中搭建4机2区域交直流并联输电系统，仿真结果验证了所提方法的有效性。 |
| 关键词: 紧急功率支援 扩张状态观测器 功率支援限制因素 阶梯递增原则 交直流并联系统 |
| DOI：10.16081/j.issn.1006-6047.2018.12.022 |
| 分类号:TM76 |
| 基金项目:国家自然科学基金资助项目(51607158,51507157)；河南省重大科技专项(161100211600)；郑州轻工业学院博士基金资助项目(2015BSJJ003) |
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| DC amplitude stepped incremental emergency power support based on dynamic estimation of unbalanced power |
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LI Congshan, HE Ping, JIN Nan, WU Jie, TAO Yukun, YANG Cunxiang, GUO Jian
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School of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
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| Abstract: |
| The extended state observer of unbalanced power in power system under disturbance is built, and its parameters are set up to realize the real-time and accurate estimation of unbalanced power. Considering the limiting factors of DC emergency power support, the emergency power support capacity is optimized, and the power support target is achieved based on the stepped increment principle of power support. According to the power disturbances, the threshold index is defined to realize the selection of three amplitude stepped incremental support schemes. A 4-machine 2-area AC/DC parallel transmission system is built in PSCAD, and the simulative results verify the effectiveness of the proposed method. |
| Key words: emergency power support extended state observer limiting factor of power support stepped increment principle AC/DC parallel system |
