Voltage Stabilization of Electrical Network by Using UPFC Compensator Commanded by Fuzzy Controllers

摘要

The capacity to maintain the electric network reliability by ensuring the good quality of the electric quantities to be deliver to users became one of the major challenges as well as for the energy producers and the consumers facing this challenge, several research in this field are started. Some works were directed towards the study of the voltage profile; this profile is one of electric network reliability factor. Moreover, the FACTS use represents one of the efficient ways allowing the stability voltage control. In this context our contribution consists in implementing a new voltage stabilization strategy. Our strategy was tested on the IEEE 14 buses network with the presence of fault conditions putting the network in a critical state. This strategy rests on the reactive power quantity estimation to inject by a static compensator, UPFC, provided with fuzzy logic regulators of the fault occurrence phase in a given network point. We expose, in the present paper, our new strategy which ensures the reactive quantity estimation procedure that the UPFC must exchange with the network remainder aiming to stabilize the voltage at each bus in order to avoid the voltage collapse phenomenon which worries all the nations. The proposal innovation consists in ensuring a perfect decoupling between the UPFC converters and the point of fault occurrence.