The obvious increment in carbon dioxide emission has encourage the power converters designers to enhance designs in order to guarantee the use of green power generation technologies. It should be balanced the fact that we need to decrease carbon dioxide emissions with the fact that we need to ensure that all power system technologies asure system stability, robustness and reliability. A useful power injection and voltage generation is a duty that must be done in the work of conditionig a resource to be connected into the electric grid, for which a power and voltage control system must be studied and proved to give the free way of interconnecting green technologies into the electric grid. This paper, shows a simple but power scontrol and regulation Park's transformation based-scheme for VSC voltage and power control, linked to power flow formulation for VSC-HVDC systems and power factor constraints.