Rao suggested three straight forward, metaphor-free optimization strategies to address the challenging optimization issue. These algorithms are approaches for optimization without parameters. As a result, no parameter modification unique to an algorithm is needed. This feature makes these algorithms simple to use and effective at resolving a wide range of difficult engineering and scientific challenges. This paper’s main objective is to use the Rao method to resolve the reactive power dispatch problem under both regular and emergency circumstances. The suggested method’s reliability was tested using these techniques in standard IEEE 30 bus test systems. Overall reactive power dispatch (RPD) results of Rao algorithms were matched with those of recently published well-known methods. Rao algorithms produce accurate and competitively priced numerical results.