• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

电力建设 ›› 2016, Vol. 37 ›› Issue (7): 71-77.doi: 10.3969/j.issn.1000-7229.2016.07.010

• 输配电技术 • 上一篇    下一篇

供电无源网络的VSC-HVDC系统控制器及PI参数研究

李向阳1,刘应梅2,王明东1   

  1. 1.郑州大学电气工程学院,郑州市 450001;2.中国电力科学研究院,北京市 100192
  • 出版日期:2016-07-01
  • 作者简介:李向阳(1989),男,硕士,主要研究方向为柔性直流输电系统的运行分析及控制; 刘应梅(1976),女,博士,高级工程师,主要研究方向为电网规划及运行控制; 王明东(1971),男,博士,副教授,研究方向为电力系统稳定分析与控制、智能系统理论在电力系统中的应用。
  • 基金资助:
    国家自然科学基金项目 (51407164)

VSC-HVDC Controller and PI Parameters Tuning in Supplying Passive Networks

LI Xiangyang1, LIU Yingmei2, WANG Mingdong1   

  1. 1. School of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China; 2. China Electric Power Research Institute, Beijing 100192, China
  • Online:2016-07-01
  • Supported by:
    Project supported by National Natural Science Foundation of China(51407164)

摘要: 电压源型高压直流输电技术(voltage source converter based high voltage direct current transmission,VSC-HVDC)在无源网络供电领域具有较好的应用前景。首先分析了向无源网络供电的两端VSC-HVDC的系统结构和工作原理,建立了系统在d-q同步旋转轴下的欧拉-拉格朗日数学模型;其次设计了PI双闭环和无源双闭环2种控制器;再次提出了基于对称最优法的外环控制器参数整定方法;在PSCAD/EMTDC中搭建了向无源网络供电的两端VSC-HVDC仿真系统,分别采用PI双闭环和无源双闭环控制器,对无源网络负荷功率变化和电压下降2种工况进行了仿真分析。仿真结果表明:所提出的控制参数整定方法是正确有效的,设计的无源双闭环控制器和PI双闭环控制器都可以实现电压、电流的快速精准控制,使无源网络电压稳定在给定值,相对而言,无源双闭环控制器的动态控制性能更好。

关键词: 电压源型高压直流输电技术(VSC-HVDC), 无源网络, 无源控制器, 双闭环控制, PI参数整定

Abstract: The VSC-HVDC (voltage source converter based high voltage direct current transmission) system has a good application prospect in supplying power to the passive network. Firstly, this paper analyzes the system structure and working principle of VSC-HVDC in passive network power supplying and develops its Euler Lagrange (EL) model in d-q synchronous reference frame. At the same time, two controllers including a PI double closed-loop controller and a passive double closed-loop controller are designed. Then, this paper presents the parameters tuning method of outer-loop controller based on the symmetrical optimum method. Under different operating conditions including power change of passive network and voltage drop, VSC-HVDC system with a PI double closed-loop controller or a passive double closed-loop controller is simulated by software PSCAD/EMTDC. The simulation results show that the proposed control parameter tuning method is correct, the designed passive double closed-loop controller and PI double closed-loop controller can realize the fast and precise control of voltage and current, and the voltage of the passive network can be stabilized at a given value. Relatively speaking, the dynamic performance of passive double closed-loop controller is better.

Key words: voltage source converter based high voltage direct current transmission (VSC-HVDC), passive network, passive controller, double closed-loop control, PI parameters tuning

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