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不等式约束
    Based on the general OPF module and under multi-contingences conditions, all swing equations of generators will be converted into numericalequivalent algebraic equations set by using the implicit trapezoidal rule, and are involved in equality constrains set; all rotors' angles related to COI are used to be inequality constrains.
    利用隐式梯形积分规则,将各个故障下电力系统所有发电机转子运动方程差分化作为等式约束,把发电机转子相对摇摆角极限作为不等式约束,二者作为暂态稳定条件加入最优潮流当中,建立了多预想故障暂态稳定约束最优潮流模型,并利用现代内点理论对模型进行求解。
    The maximal electric power load of the accepting region is chosen as the objective function, and difference equations of the rotors movement are introduced as equality constrains, and inequality constrains include node voltages, the offsets of the rotor angles with relative to the inertia centre angle of the whole system, the line active powers and generator active powers of feeding region.
    该问题以受电区域所能带的最大负荷值为目标函数,将转子运动方程差分化,形成一系列代数方程,而后作为等式约束引入,以节点电压、发电机转子相对全系统惯性中心的角度差、线路有功功率以及送电区发电机有功功率构成不等式约束
    Finally, we spark off a new thinking on the nonlinear single objective and multi-objective programming problems with mixed constrains:using the vax variable,we convert the inequality constrains to the equality ones, and then solve it by the desecnding algorithm with accurate one dimension searching method.
    最后,针对具有混合约束的非线性单目标和多目标的规划问题,本文提出了一种新的思路:先引入松弛变量,将不等式约束转化为等式约束,再用带搜索的降维算法进行求解。
    The results of several test systems show that this proposed algorithm has stable convergence, good optimization accuracy, flexibility, strong ability to deal with variable and function inequality constrains, and is suitable for solving multiobjective optimization problem of large scale power system.
    对几个试验系统的计算表明,该算法具有稳定的收敛性能,优化结果精确,灵活方便,处理变量不等式约束和函数不等式约束的能力很强,适合于求解大规模电力系统的多目标优化问题
    This paper proposes the method of SQP ( sequential quadratic programming) to calculate voltage/reactive power optimization power flow,considering the minimum losses of transmission line as objective function,the reactive power flow equations as equality constrains and the ranges of a set of voltage and control variables as inequality constrains.
    以网络有功损耗最小为目标函数 ,考虑潮流无功平衡方程的等式约束和一系列电压和控制变量的不等式约束 ,使用 SQP序列二次规划法计算电压无功优化潮流。
    In this paper,penalty function is introduced to deal with environmental inequality constrains,an appropriate method of coding as well as fitness function is chosen, and the genetic algorithm is applied to solve the optimal problem.
    引入罚函数来处理环境不等式约束,建立了适当的编码方式和适应度函数,应用遗传算法以求解优化布局问题,并进行了数值试验。
    An optimal acceleration control law, verified in the whole envelope, is studied for variable geometry turbofan engine based on genetic algorithm (GA) and control design with inequality constrains is discussed in this paper.
    研究了变几何涡扇发动机不等式约束下的遗传算法最优加速控制规律,在全飞行包线内进行了仿真计算。
    The KKT conditions of a nonlinear programming with linear inequality constrains can be transformed into a system of equations by NCP function. Then it is smoothed by Entropy smoothing function.
    带不等式约束的非线性规划,其KKT条件可以通过NCP函数转化为一个非光滑的方程组,然后用熵光滑化函数光滑化,得到一个带参数的方程组.
 

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