Feedback Linearization Sliding Mode Control Strategy for Soft Open Point

Guorong ZHANG; Likai HOU; Bo PENG; Jihong LI; Yi LU; Feng XU

doi:10.7500/AEPS20190616005

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Feedback Linearization Sliding Mode Control Strategy for Soft Open Point

Basic Research | 更新时间：2020-07-14

- Feedback Linearization Sliding Mode Control Strategy for Soft Open Point
- Automation of Electric Power Systems Vol. 44, Issue 1, Pages: 126-133(2020)
- 作者机构：
  
  1. 合肥工业大学电气与自动化工程学院，安徽省合肥市 230009
  2. 国网浙江省电力有限公司，浙江省杭州市 310000
  3. 国网浙江省电力有限公司电力科学研究院，浙江省杭州市 310014
- 作者简介：
- 基金信息：
  
  National Key R&D Program of China(2017YFB0903100);Sate Grid Corporation of China(521104170043)
- DOI：10.7500/AEPS20190616005
  CLC：
- Received：16 June 2019，
  
  Revised：2019-08-05，
  
  Published Online：30 November 2019，
  
  Published：10 January 2020
- 稿件说明：
移动端阅览
张国荣,侯立凯,彭勃等.柔性多状态开关反馈线性化滑模控制[J].电力系统自动化,2020,44(01):126-133.

ZHANG Guorong,HOU Likai,PENG Bo,et al.Feedback Linearization Sliding Mode Control Strategy for Soft Open Point[J].Automation of Electric Power Systems,2020,44(01):126-133.
张国荣,侯立凯,彭勃等.柔性多状态开关反馈线性化滑模控制[J].电力系统自动化,2020,44(01):126-133. DOI： 10.7500/AEPS20190616005.

ZHANG Guorong,HOU Likai,PENG Bo,et al.Feedback Linearization Sliding Mode Control Strategy for Soft Open Point[J].Automation of Electric Power Systems,2020,44(01):126-133. DOI： 10.7500/AEPS20190616005.

摘要

柔性多状态开关（SOP）能够实现配电网馈线潮流灵活的调控，改善电压分布水平，提升配电网消纳分布式电源的能力，已成为配电网领域的一个研究热点。文中以三端口SOP为研究对象，建立了三端SOP的数学模型。针对SOP数学模型体现出的非线性及强耦合的特点，通过坐标变换得到反馈线性化模型，对该模型设计了滑模控制器。文中将反馈线性化控制和滑模控制相结合，并用该复合控制取代传统比例-积分(PI)双环控制的电流内环，与传统PI双环控制相比，可以减少PI控制环节，降低PI参数整定的难度。根据SOP不同运行模式的要求，分别实现了各端口定直流电压和定无功功率模式、定有功功率和无功功率模式、定交流电压模式下的反馈线性化滑模控制算法。在MATLAB/Simulink中搭建三端口SOP仿真模型，仿真结果表明，与传统PI控制相比，所提出的控制策略动态性能好、鲁棒性强。最后，通过几种典型工况的仿真，进一步验证了所提控制策略的有效性。

Abstract

Soft open point (SOP) has become a research hotspot in the field of distribution network

which can realize flexible regulation of feeder flow of distribution network

improve voltage distribution level

and promote the ability of distribution network to consume distributed generation. The three-port SOP is studied and the corresponding mathematical model is established in this paper. According to the strong coupling and nonlinearity of the mathematical model

the feedback linearization model is obtained by coordinate transformation

and the sliding mode controller is designed for the model. In this paper

the feedback linearization control and sliding mode control are combined

and the composite control is used to replace the current inner loop of the traditional dual closed-loop proportion-integral (PI) control. Compared with the traditional PI control

the composite control can reduce the PI control link and the difficulty in PI parameter setting. According to the requirements of different operation modes of SOP

the feedback linearization sliding mode control algorithm in constant DC voltage and reactive power mode

constant active and reactive power mode and constant AC voltage mode are realized

respectively. A three-port SOP system is built in MATLAB/Simulink

and simulation results show that the proposed control strategy has good dynamic performance and robustness compared to the traditional PI control. Finally

the effectiveness of the proposed control strategy is further verified by simulation of several typical operation conditions.

关键词

Keywords

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