最优潮流的实用化研究

Achievements of Practical Optimal Power Flow

本文结合能量管理系统（ＥＭＳ）中最优潮流应用（ＯＰＦＡｐｐｌｉｃａｔｉｏｎ）的实际特点，介绍了作者对于牛顿法最优潮流计算中几个问题和难点的处理策略。它们包括：对于作为函数型不等式约束的机组无功出力的特殊处理；在不等式约束处理中加入优先级策略以提高计算速度和保证可靠收敛；在主迭代之间逐次利用惩罚因子信息使程序加速收敛以及作为控制变量的无功补偿设备和在线可调变压器的分接头的实际处理方法。实际系统计算结果表明，这些改进措施大大提高了ＯＰＦ应用的计算速度、收敛性及数值计算的稳定性，具有很强的实用意义。

This paper presents some enhancements and achievements in the practical application of Newton Optimal Power Flow in EMS, which include: enforcing the reactive generation power constraint as a special kind of function inequality constraint; putting a priority list into the inequality constraint treatment procedure to increase the computation speed and stability; using the information of penalty factors between the main iterations to enhance the convergence of the algorithm and, the practical method of using the shunt reactive compensatory equipment and the on-load transformer tap as the control variables in optimmzation.