引用本文:张伟奎,常鲜戎,李涛,等.基于DSP和新型滑模控制的DSTATCOM研究[J].电力系统保护与控制,2014,42(13):7-12.
ZHANG Wei-kui,CHANG Xian-rong,LI Tao,et al.Research on DSTATCOM based on DSP and novel sliding mode control[J].Power System Protection and Control,2014,42(13):7-12
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基于DSP和新型滑模控制的DSTATCOM研究
张伟奎1, 常鲜戎2, 李涛3, 王辉云4, 马瑞军5
1.新疆电力公司乌鲁木齐电业局，新疆 乌鲁木齐 830011;2.新能源电力系统国家重点实验室，华北电力大学，河北 保定 071003;3.济宁市供电公司，山东 济宁 272000;4.济南市供电公司，山东 济南 250012;5.新疆工程学院，新疆 乌鲁木齐 830023
摘要:
为提高配电网静止同步补偿器(Distribution Static Synchronous Compensator，DSTATCOM)控制系统的鲁棒性和动态性能，在对DSTATCOM非线性数学模型时域分析的基础上，得出滑模控制的一般规律。为削弱滑模控制的抖振现象，提出一种新型滑模控制方法。该方法将滑模面分解为两个滑模子面，根据滑模子面的偏离程度分别采用不同的滑模控制规律，既保证了电流跟踪的快速性又削弱了抖振现象。研制了一台基于DSP的DSTATCOM样机，给出硬件原理和软件设计流程。实验结果表明，该控制方法动态响应快、鲁棒性好、能较好地抑制电流的毛刺现象，证明了该方法的正确性和可行性。
关键词:  配电网静止同步补偿器  谐波抑制  无功补偿  滑模控制  鲁棒性
DOI：
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Research on DSTATCOM based on DSP and novel sliding mode control
ZHANG Wei-kui1, CHANG Xian-rong2, LI Tao3, WANG Hui-yun4, MA Rui-jun5
1.Urumqi Electric Power Bureau, Xinjiang Electric Power Corporation, Urumqi 830011, China;2.State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Baoding 071003, China;3.Jining Electric Power Company, Jining 272000, China;4.Jinan Electric Power Company, Jinan 250012, China;5.Xinjiang College of Engineering, Urumqi 830023, China
Abstract:
In order to improve the robustness and dynamic response of distribution static synchronous compensator (DSTATCOM) control system, the common sliding mode control strategy is proposed based on the time-domain analysis of DSTATCOM nonlinear mathematical model. A novel sliding mode control strategy is proposed to further reduce chattering. Sliding surface is separated into two different sliding surface according to deviation extent which has different sliding mode strategy, so the current tracking speed is improved and chattering is reduced. Hardware and software of DSTATCOM are designed, and a prototype based on DSP is implemented. The proposed control strategy possesses the advantages such as strong robusticity, good dynamic response and low chattering, which show its validity and feasibility.
Key words:  DSTATCOM  harmonic suppression  reactive power compensation  sliding mode control  robustness
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