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抽水蓄能电站的可逆式机组具有强非线性与工况复杂性特点,采用理论或试验的方法均难以得到其动态特性的精确表达。在建立可逆式机组不确定参数模型的基础上,通过构造控制系统输出函数和上界函数,研究了基于滑模结构的鲁棒控制策略。理论推导与仿真试验表明,所研究的控制策略具有对运行工况变化适应性强和应用方便的特点,是解决可逆式机组复杂非线性控制问题的一种有效方法。
The reversible unit of pumped storage power station has the characteristics of strong nonlinearity and working condition complexity. It is hard to get accurate expression of its dynamic characteristics by theory or experiment. Based on the establishment of the uncertain parameter model of the reversible unit, the robust control strategy based on sliding mode structure is studied by constructing the output function and the upper bound function of the control system. The theoretical derivation and simulation tests show that the proposed control strategy has the characteristics of adaptability to changes in operating conditions and convenient application, and is an effective method to solve the complex nonlinear control of reversible units.