基于模糊隶属度及区间算术的电网电压优化新算法

传统无功优化由于寻优策略复杂、计算机时较长,目前尚较难应用于电网实时优化控制。基于最优电压模糊隶属度及区间潮流算法,提出了一种简单快速的寻优新思路。先由电网能提供的控制变量区间求解对应的电压区间,与电网安全约束电压区间求交后便得到既可行又能满足安全约束的电压区间。在此区间中找出隶属度最大的电压值,以此电压值为已知量求解反潮流,所得的控制变量解便为要求的最优控制变量组合。该方法与传统的智能算法比较,结果说明该方法的确优化速度快,适合作为省级电网的AVC系统电压优化的快速寻优方法。

A new approach for voltage optimization based on fuzzy membership and interval arithmetic

Due to the complex optimization strategy and long computation of the traditional reactive power optimization, it is still difficult to apply to real-time optimization control for power grid, this paper proposes a simple and rapid idea of voltage optimization based on fuzzy membership and interval power flow algorithm. At first, it obtains the corresponding interval voltage by the interval control variable provided by the grid and intersecting with the security voltage interval to get feasible voltage range. Then it finds the voltage of maximal membership during this interval as known quantity to solve the power flow and require the optimal control variable combinations. Comparing to the traditional intelligent algorithms, the results of the algorithm is suitable for the voltage optimization in provincial power grid AVC system as a fast and efficient optimization method.