In the present scenario of electricity market reactive-power-planning (RPP) is a very challenging and promising issue for the power system researchers. The main motive of RPP on a power network is to find out the optimal settings of controlling parameters like reactive power (var) generation of alternators, tap settings of transformer etc. with satisfying equality and inequality constraints. This article, proposes a bi-level strategy to mitigate the solution of RPP problem. Initially, weak nodes are detected, for the placement of additional var supporters, using three separate methods. Different meta-heuristic techniques are applied, in second level for the optimal sizing of the var supporters along with optimum controlling parameters to minimize the overall system operating cost with least energy losses. The reactive power cost-coefficients are calculated to enable the application of power triangle method. Reactive power support from line charging element is also acknowledged which plays a significant role in system operational cost. The effectiveness of the proposed strategy is simulated on IEEE-39, IEEE-57 and IEEE-118 bus test systems. Numerical and graphical outcomes prove that the proposed bi-level strategy can be applied to get a promising solution related to RPP problem.

在电力市场的当前情况下，无功功率计划（RPP）对于电力系统研究人员而言是一个非常具有挑战性和前途的问题。RPP在电网上的主要动机是找出满足相等和不平等约束的控制参数的最佳设置，例如交流发电机的无功功率（var）生成，变压器的抽头设置等。本文提出了一种双层策略来减轻RPP问题的解决。最初，使用三种单独的方法检测弱节点，以放置其他var支持者。在第二级中应用了不同的启发式技术，以优化var支持者的大小以及优化的控制参数，以最小化整个系统的运行成本，同时降低能耗。计算无功成本系数以实现功率三角法的应用。还认可了来自线路充电元件的无功功率支持，这在系统运营成本中起着重要作用。在IEEE-39，IEEE-57和IEEE-118总线测试系统上模拟了所提出策略的有效性。数值和图形结果证明，所提出的双层策略可用于获得与RPP问题相关的有希望的解决方案。