一种基于泰勒展开的临界降阶直流配电系统稳定控制算法

doi:10.11930/j.issn.1004-9649.202012006

中国电力 ›› 2021, Vol. 54 ›› Issue (10): 73-80.DOI: 10.11930/j.issn.1004-9649.202012006

• 中低压直流配用电关键技术专栏 • 上一篇下一篇

一种基于泰勒展开的临界降阶直流配电系统稳定控制算法

袁宇波¹, 易文飞¹, 赵学深^2,3, 朱琳^2,3, 王一振^2,3, 刘海涛⁴

1. 国网江苏省电力有限公司电力科学研究院，江苏南京 211103;
2. 天津大学智能电网教育部重点实验室，天津 300072;
3. 天津市智慧能源与信息技术重点实验室，天津 300072;
4. 中国电力科学研究院有限公司，北京 100192

收稿日期:2020-12-03 修回日期:2021-03-30 出版日期:2021-10-05 发布日期:2021-10-16
作者简介:袁宇波(1975-),男,博士,高级工程师(研究员级),从事中低压交直流电力系统控制与保护等研究,E-mail:yyb97104@sina.com;易文飞(1987-),男,博士,工程师,从事电力系统运行控制、调度自动化等研究,E-mail:yiwenfei2006@163.com;赵学深(1991-),男,通信作者,博士研究生,从事中低压直流配电系统降阶建模、机理分析及控制算法设计研究,E-mail:zxs_1019@tju.edu.cn;朱琳(1983-),女,博士,助理教授,从事中低压交直流电力系统控制与保护等研究,E-mail:lin_zhu@tju.edu.cn
基金资助:
国家重点研发计划资助项目(2018YFB0904700)

A Stabilization Control Method of Supercritical Reduced-Order Medium-Voltage DC Distribution System Based on Taylor Expansion

YUAN Yubo¹, YI Wenfei¹, ZHAO Xueshen^2,3, ZHU Lin^2,3, WANG Yizhen^2,3, LIU Haitao⁴

1. Electric Power Research Institute of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 211103, China;
2. Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China;
3. Key Laboratory of Smart Energy & Information Technology of Tianjin Municipality, Tianjin 300072, China;
4. China Electric Power Research Institute, Beijing 100192, China

Received:2020-12-03 Revised:2021-03-30 Online:2021-10-05 Published:2021-10-16
Supported by:
This work is supported by National Key Research and Development Program of China (No.2018YFB0904700)

摘要/Abstract

摘要： 以中压直流（medium-voltage DC, MVDC）配电系统为研究对象，建立了直流系统的临界降阶模型，研究了恒功率负载对系统稳定性的影响。由于直流系统中恒功率负载的负阻抗特性会导致系统电压发生振荡失稳现象，给稳定运行带来不利影响，提出一种能够提高MVDC配电系统电压稳定性的稳定控制算法，通过状态反馈控制、下垂控制及电压控制中关键参数的分散灵活设计，改变系统主导极点在s域平面的位置，有效提高MVDC配电系统的稳定性。仿真结果验证了临界降阶模型的合理性以及基于泰勒展开控制算法的有效性。

关键词: 中压直流配电系统, 泰勒展开, 阻尼比, 临界降阶模型, 稳定控制算法

Abstract: In this paper, a typical medium voltage DC (MVDC) distribution system is taken as the research object, its supercritical reduced-order model is also established, and the effect of constant power load (CPL) on the system stability is also studied. The negative incremental resistance of CPL will lead to the voltage oscillation and instability of the system, which will adversely affect the stable operation of the system. For this reason, a stabilization control method which can improve the voltage stability of MVDC distribution system is proposed in this paper. The position of the dominant pole in the s-domain plane can be changed, which is due to the decentralized and flexible design of key control parameters in state feedback control, droop control and voltage control, and the stability of MVDC distribution system is improved. The simulation results verify the rationality of the supercritical reduced-order model and the effectiveness of the stabilization control method based on Taylor expansion.

Key words: medium voltage DC distribution system, Taylor expansion, damping factor, supercritical reduced-order model, stabilization control method

袁宇波, 易文飞, 赵学深, 朱琳, 王一振, 刘海涛. 一种基于泰勒展开的临界降阶直流配电系统稳定控制算法[J]. 中国电力, 2021, 54(10): 73-80.

YUAN Yubo, YI Wenfei, ZHAO Xueshen, ZHU Lin, WANG Yizhen, LIU Haitao. A Stabilization Control Method of Supercritical Reduced-Order Medium-Voltage DC Distribution System Based on Taylor Expansion[J]. Electric Power, 2021, 54(10): 73-80.

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一种基于泰勒展开的临界降阶直流配电系统稳定控制算法

A Stabilization Control Method of Supercritical Reduced-Order Medium-Voltage DC Distribution System Based on Taylor Expansion

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一种基于泰勒展开的临界降阶直流配电系统稳定控制算法

A Stabilization Control Method of Supercritical Reduced-Order Medium-Voltage DC Distribution System Based on Taylor Expansion

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