| 基于前馈补偿的柔性直流配电系统下垂控制方法 |
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| 引用本文： | 赵学深,彭克,张新慧,徐丙垠,陈羽,李菡昊.基于前馈补偿的柔性直流配电系统下垂控制方法[J].电力系统自动化,2018,42(15):94-101. |
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| 作者姓名： | 赵学深 彭克 张新慧 徐丙垠 陈羽 李菡昊 |
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| 作者单位： | 山东理工大学电气与电子工程学院 |
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| 基金项目： | 国家重点研发计划资助项目(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： | 针对柔性直流配电系统采用的Udc-P和Udc-Idc两种典型下垂控制策略,建立了基于动态导纳的下垂控制小扰动稳定分析模型。研究了直流线路参数、交流互联电网强度以及直流负荷等影响因素变化时系统出现的不稳定现象;进而提出了基于带通滤波的前馈补偿下垂控制方法,并对补偿前后的系统稳定性进行了分析比较。最后通过改进的IEEE 33节点配电系统算例进行时域仿真测试,仿真结果表明所提方法能够有效提高系统阻尼与稳定性。
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| 关 键 词： | 下垂控制 前馈补偿 稳定裕度 奈奎斯特判据 |
| 收稿时间： | 2017/12/16 0:00:00 |
| 修稿时间： | 2018/7/5 0:00:00 |
Droop Control Method for Flexible DC Distribution System Based on Feedforward Compensation |
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| ZHAO Xueshen,PENG Ke,ZHANG Xinhui,XU Bingyin,CHEN Yu and LI Hanhao.Droop Control Method for Flexible DC Distribution System Based on Feedforward Compensation[J].Automation of Electric Power Systems,2018,42(15):94-101. |
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| Authors: | ZHAO Xueshen PENG Ke ZHANG Xinhui XU Bingyin CHEN Yu and LI Hanhao |
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| Affiliation: | College of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255049, China,College of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255049, China,College of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255049, China,College of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255049, China,College of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255049, China and College of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255049, China |
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| Abstract: | According to two typical droop control strategies of Udc-P and Udc-Idc used in flexible DC distribution system, a small signal stability analysis model of droop control is established to investigate the stability of the system based on the change of influence factors such as DC line parameters, the intensity of interconnected AC power grid, and the DC load. Then the feedforward compensation droop control method on the basis of band-pass filter is put forward, and an analysis on the comparison of system stability before and after compensation is taken. Finally, a time-domain simulation test through modified IEEE 33-node test system is made. The results show that the proposed method is an effective way to increase damping and improve the stability of the system. |
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| Keywords: | droop control feedforward compensation stability margin Nyquist admittance ratio criterion |
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