| 多端柔性直流配电系统主从控制模式下的稳定性与优化控制 |
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| 引用本文： | 赵学深,彭克,张新慧,陈羽,徐丙垠,郭瑶.多端柔性直流配电系统主从控制模式下的稳定性与优化控制[J].电力自动化设备,2019,39(2). |
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| 作者姓名： | 赵学深 彭克 张新慧 陈羽 徐丙垠 郭瑶 |
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| 作者单位： | 山东理工大学电气与电子工程学院,山东淄博,255000;山东理工大学电气与电子工程学院,山东淄博,255000;山东理工大学电气与电子工程学院,山东淄博,255000;山东理工大学电气与电子工程学院,山东淄博,255000;山东理工大学电气与电子工程学院,山东淄博,255000;山东理工大学电气与电子工程学院,山东淄博,255000 |
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| 基金项目： | 国家重点研发计划项目(2016YFB0900600)；山东省自然科学基金资助项目(ZR2017LEE022)；国家电网公司科技项目(52094017000W) |
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| 摘 要： | 多端柔性直流配电系统是配电系统的一个重要发展趋势,其可有效提升城市配电系统的电能质量、可靠性与运行效率。主要研究了主从控制模式下多端柔性直流配电系统运行时的稳定性问题。建立了基于动态导纳的小扰动稳定分析模型,研究了直流负荷、直流线路参数和多端互联等影响因素变化时系统出现的不稳定现象,提出了基于带通滤波的前馈补偿定直流电压控制方法,并对补偿前、后的系统稳定性进行了分析比较,通过改进的IEEE 33节点配电系统进行时域仿真测试,仿真结果表明了所提方法能够有效地提高系统阻尼与稳定性。
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| 关 键 词： | 多端柔性直流配电系统 主从控制 前馈补偿 小扰动稳定性 奈奎斯特判据 |
Stability and optimal control of multi-terminal flexible DC distribution system under master-slave control mode |
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| ZHAO Xueshen,PENG Ke,ZHANG Xinhui,CHEN Yu,XU Bingyin and GUO Yao.Stability and optimal control of multi-terminal flexible DC distribution system under master-slave control mode[J].Electric Power Automation Equipment,2019,39(2). |
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| Authors: | ZHAO Xueshen PENG Ke ZHANG Xinhui CHEN Yu XU Bingyin and GUO Yao |
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| Affiliation: | School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255000, China,School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255000, China,School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255000, China,School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255000, China,School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255000, China and School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255000, China |
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| Abstract: | Multi-terminal flexible DC distribution system is an important development trend of distribution system, which can effectively improve the power quality, reliability and operational efficiency of urban distribution system. The research mainly focuses on the stability problems of multi-terminal flexible DC distribution system under master-slave control mode. A small signal stability analysis model based on the dynamic admittance is established. The instability phenomenons, which are caused by the changes of influencing factors such as DC load, DC line parameters, terminal number and so on, are analyzed. Then a feedforward compensation constant DC bus voltage control method based on band-pass filter is put forward, and system stability before and after compensation is compared. A time-domain simulation test is carried out in the modified IEEE 33-bus distribution system, and the simulative results show that the proposed method can improve the damping and stability of the system effectively. |
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| Keywords: | multi-terminal flexible DC distribution system master-slave control feedforward compensation small signal stability Nyquist admittance ratio criterion |
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