Novel dependencies of currents and voltages in power system steady state mode on regulable parameters of three-phase systems symmetrization

Abstract

The unbalanced mode, negative/zero sequence, variation of real power are caused by the nonlinear or unbalanced loads increase the power transmission losses in distributing power systems and also harmful to the electric devices. Reactive power compensation is considered as the common methods for overcoming asymmetry. The critical issue in reactive power compensation is the optimal calculation of compensation values that is extremely difficult in complex circuits. We proposed a novel approach to overcome these difficulties by providing the creation of new analytical connections of the steady-state mode parameters (voltages, currents) depends on the controlled parameter for the arbitrary circuits. The base of our approach to reactive power compensation is the fractional-polynomial functions. We present a new description of the behavior of voltages and currents depending on the controlled parameters of the reactive power compensation devices, and we prove its effectiveness.

Influence of reactive power compensation from PV systems on electrical grid

“…The rapid expansion of PV systems has raised many concerns among grid operators [32], one of them being the stability of the network voltage [33]. Grid operators have to impose strict operating rules on PV systems in order to maintain the stability of the grid voltage.…”