发电技术 ›› 2020, Vol. 41 ›› Issue (6): 667-674.DOI: 10.12096/j.2096-4528.pgt.19079

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基于RTDS的VSC控制参数分环拟合方法

徐鹏1(), 米建宾2(), 蒙小飞3(), 谢欢2()   

  1. 1 国家电网公司华北分部, 北京市 西城区 100045
    2 国网冀北电力有限公司电力科学研究院, 北京市 西城区 100045
    3 华润电力(温州)有限公司, 浙江省 温州市 325000
  • 收稿日期:2020-05-17 出版日期:2020-12-31 发布日期:2021-01-12
  • 作者简介:徐鹏(1986), 男, 博士, 工程师, 主要研究方向为新能源并网稳定性, xupeng_ncepu@126.com
    米建宾(1979), 男, 高级工程师, 主要研究方向为发电厂电气设备系统调试, 28363268@qq.com
    蒙小飞(1983), 男, 工程师, 主要研究方向为发电厂电气设备管理维护, 764215289@qq.com
    谢欢(1979), 男, 博士, 高级工程师, 主要研究方向为电力系统稳定及励磁系统控制, xie.huan@ncepri.com.cn
  • 基金资助:
    国家重点研发计划项目(2016YFB0900502);国家电网公司科技项目(520101180002)

Sub-parts Control Parameter Fitting Method of VSC Based on RTDS

Peng XU1(), Jianbin MI2(), Xiaofei MENG3(), Huan XIE2()   

  1. 1 North China Branch of State Grid Corporation of China, Xicheng District, Beijing 100045, China
    2 Electric Power Research Institute of State Grid Jibei Electric Power Company Limited, Xicheng District, Beijing 100045, China
    3 Huarun Power(Wenzhou) Co., Ltd., Wenzhou 325000, Zhejiang Province, China
  • Received:2020-05-17 Published:2020-12-31 Online:2021-01-12
  • Supported by:
    National Key Research and Development Program of China(2016YFB0900502);Science and Technology Program of State Grid Corporation(520101180002)

摘要:

电压源换流器(voltage source controller,VSC)作为风电、光伏及换流站等设备的主要电力电子元器件,其控制方式和参数整定对系统运行有着重要的影响。基于实时数字仿真仪(real time digital simulator,RTDS)半实物仿真和纯数字仿真,提出一种用于拟合实际VSC控制模型参数的方法。以典型VSC并网系统模型为例,首先,借鉴锁相环原理提出一种具有自适应性观测坐标系建立方法,用于对比拟合2种仿真模型的阶跃响应;其次,分别给出了VSC锁相环、电流内环和电压外环的拟合方法,其中在电流内环控制参数拟合过程中,利用观测坐标系在控制器锁相环输出角度未知时实现电流阶跃;最后,通过不同控制环节模型参数拟合时的仿真对比分析,证明了所提方法的有效性。

关键词: 电压源换流器(VSC), 参数拟合, 自适应观测坐标系, 锁相环(PLL)

Abstract:

Voltage source converter (VSC) is the main power electronic components of wind power, photovoltaic and converter stations. It's control mode and parameter setting have important influence on system operation. Based on real time digital simulator (RTDS) hardware-in-loop simulation and digital simulation, a new method of parameter fitting applied to characterize physical VSC was proposed. Taking a typical single VSC grid connected system model as an example, firstly, based on the principle of phase-locked loop (PLL), an adaptive observation coordinate system was proposed to compare and fit the step response of two simulation models. Then the fitting methods of PLL, current inner loop and DC voltage outer loop in VSC control system were introduced separately. Self-adaptive observational coordinate system was used in the process of current inner loop parameter fitting. Finally, the efficiency of the proposed method was verified by the comparative analysis of simulations.

Key words: voltage source controller (VSC), parameter fitting, self-adaptive observation coordinate system, phase-locked loop (PLL)

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