Summary of subject lines like all components of the electrical power system, for
unexpected breakdowns for multiple reasons. This reduces malfunctions of the reliability
of the system, and is a source of threat to the continuity of power supply. In
order to
prevent these crashes completely is not feasible, you must design an integrated protection
system is being coordinated action among all its organs to identify and separate the
holidays quickly so the damage caused by this failure the system capacity as possible.
Network protection devices are installed to protect it from faults that may occur, and
prevent their spread and protect the system from un normal operating situations resulting
from such faults. protection systems to identify, classify and locate of faults through
systematic analysis of network parameters) voltages/currents, (and then send a signal to
circuit breakers on separation to separate and isolate the infected component.
This thesis took up the study of The effect of wind plants connection on protection system
in distribution networks on behaviour of protection devices used should (over current) and
compare the results with those protections work behavior when connection with regular
generators. we found through modeling and simulation results that a wind station to impose
changes on the structure of power system of protection zones and protection devices in
response to the types of faults occurring and the reason for the delay in the work of these
protections.
This research divided into theoretical and practical sections. The
theoretical section present an introduction of alternative powers and
an introduction of an induction generator and specify advantages of
induction generators from other types and present the simple
explain of their working principles. Practical section presents the
practical results reached after many experiences.
Worldwide wind turbines have steadily increased. They are very different in nature from conventional
generators.
Induction generators in large scale are used in wind turbines for their simple construction and reliable
operation.
With the increase
in penetration of wind turbines, the power system dominated by synchronous
machines will experience a change in dynamics and operational parameters.
This paper aims to analyze the impact of induction generators on transient and small signal stability of
power systems by gradually increasing the rate of power generated by wind turbines and changing the
location of these turbines in the power system.
