New algorithm for estimation of correctness of active and reactive power distribution among generating sets operating in parallel

Abstract

The criterion currently used for the estimation of proportionality of active and reactive power distribution was introduced by ship classification societies many years ago, when the problem of non-active power compensation was not as serious as today. One of the important questions in the wake of the above-cited criterion is the meaning and interpretation of the Q reactive power. Due to many doubts concerning those aspects, as well as methods of determination of the deltaP and deltaQ coefficient values, a new approach to solve the problem is presented. This approach is based on the concept of the power correlation functions Psi(t), which are the basis for determining sinusoidal power function Psis(t) and cosinusoidal power function Psic(t). The specific mathematical properties of the Psis(t) and Psic(t) functions have been used to estimate the appropriate active and reactive power distribution among generating sets working in parallel in the ship system under consideration. Proposed new algorithm for solving above mentioned problem and related calculations is shown on the example of the real ship power station configuration.