文章摘要
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. 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. DOI: 10.7500/AEPS20190616005.
柔性多状态开关反馈线性化滑模控制
Feedback Linearization Sliding Mode Control Strategy for Soft Open Point
DOI:10.7500/AEPS20190616005
关键词: 配电网  柔性多状态开关  反馈线性化  滑模控制
KeyWords: 
上网日期:2019-11-30
基金项目:国家重点研发计划,国家电力公司科技项目
作者单位E-mail
张国荣 合肥工业大学电气与自动化工程学院 zhanggrcao@163.com 
侯立凯 合肥工业大学电气与自动化工程学院 793357820@qq.com 
彭 勃 合肥工业大学电气与自动化工程学院 pengbo1991 @126.com 
李继红 国网浙江省电力有限公司 superxu1@163.com 
陆 翌 国网浙江省电力有限公司电力科学研究院 lu_yi51@zj.sgcc.com 
许 烽 国网浙江省电力有限公司电力科学研究院 xuf_1988@163.com 
摘要:
      柔性多状态开关(Soft Open Point, SOP)作为一种在配电网关键节点取代传统联络开关的新型电力电子装置,能够实现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。本文以三端口SOP为研究对象,建立了三端SOP的数学模型。针对该模型在dq坐标系下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。本文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UdcQ模式、PQ模式和V/f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,本文所提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,进一步验证了本文所提控制策略的有效性。
Abstract:
      Soft Open Point (SOP) is a new type of power electronics that replaces traditional tie switch at key point in the distribution network, which can realize flexible regulation of feeder flow, improve voltage distribution level, and the ability of distribution network to consume distributed generation . This paper takes the three-port SOP as the research object and establishes the mathematical model of three-port SOP. According to the strong coupling and nonlinearity of the model in the dq reference frame, the feedback linearization model is obtained by coordinate transformation, and the sliding mode controller is designed for the model. This paper combines feedback linearization control and sliding mode control, and replaces the current inner loop of PI double loop control with the composite control. Compared with the traditional dual closed-loop PI control, the composite control can reduce the PI control link, and the difficulty in PI parameter setting. According to the requirements of different operating modes of SOP, the feedback linearization sliding mode control algorithm in UdcQ mode, PQ mode and V/f mode is realized respectively. Building a three-port SOP simulation model in MATLAB/Simulink, the simulation results show that compared with the traditional PI control strategy, the proposed control strategy has good dynamic performance and robustness. Finally, through the simulation of several typical working conditions, the effectiveness of the proposed control strategy is further verified.
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