首页|非理想条件下并联有源电力滤波器的无源超螺旋二阶滑模控制策略

非理想条件下并联有源电力滤波器的无源超螺旋二阶滑模控制策略

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电力系统运行在非理想状态时,容易产生短暂的电压波动,此时并联有源电力滤波器(shunt active power filter,SAPF)采用无源控制策略无法高效、精确地调节电能质量,而常规滑模控制又容易引起抖振.针对上述情况,将无源控制和抗干扰能力更强的超螺旋二阶滑模控制相结合,提出了一种无源超螺旋二阶滑模控制策略.首先,根据有源电力滤波器的数学模型建立基于正负序分离的欧拉-拉格朗日模型;其次,对系统的模型进行了无源性分析,且根据其无源性设计了无源控制器,同时采用超螺旋二阶滑模控制对无源控制器进一步优化,提高了系统整体的鲁棒性和抗干扰能力;最后,在理想状态和负载突变、负载不平衡、电网电压不平衡、单相电压突变 4种非理想状态下,通过仿真实验验证了无源超螺旋二阶滑模控制策略的有效性和优越性.
Passive Super-twisting Second-order Sliding Mode Control Strategy for SAPF Under Non-ideal Conditions
When the power system operates under non-ideal conditions,significant voltage fluctuations occur.The util-izatuion of a passivity-based control strategy in the shunt act-ive power filter(SAPF)may not effectively and accurately reg-ulate power quality.Besides,conventional sliding mode con-trol is also prone to buffeting.In the light of this,a passive su-per-twisting second-order sliding mode control strategy is pro-posed in this paper,which is a combination of passivity-based control and super-twisting second-order sliding mode control with stronger resisting disturbance capacity.First of all,the Euler-Lagrange model is established based on positive and neg-ative sequence separation,in accordance with the mathematical model of active power filter.Secondly,the passivity of model is analyzed,and a passivity-based controller is designed accord-ing to its passiveness.Meanwhile,the passivity-based control-ler is further optimized by using the super-twisting second-or-der sliding mode control,thereby enhancing the robustness and capacity of resisting disturbance.Finally,simulation experi-ments are carried out under both ideal condition and four non-ideal conditions,namely load mutation,load imbalance,grid voltage imbalance and single-phase voltage mutation.The sim-ulation results verify the effectiveness and superiority of the passive super-twisting second-order sliding mode control strategy.

non-ideal conditionsshunt active power filterEuler-Lagrange modelpassivity-based controlsuper-twist-ing second-order sliding mode

齐国庆、周建萍、茅大钧、从帆平、黄祖繁

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上海电力大学自动化工程学院,上海市杨浦区 200090

非理想状态 有源电力滤波器 欧拉-拉格朗日模型 无源控制 超螺旋二阶滑模

国家自然科学基金资助项目上海市"科技创新行动计划"地方院校能力建设专项

6127503819020500700

2024

10.19725/j.cnki.1007-2322.2022.0308

现代电力
华北电力大学

现代电力

CSTPCD北大核心
影响因子：0.807
ISSN：1007-2322
年,卷(期)：2024.41(4)
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