چكيده به لاتين
Because of numerous advantages of distributed generation such as increase production, reduce losses, high power quality, fast fabrication, and environmental issues, etc, The installation and operation of DGs are increased.
In our country, the DGs are connected to a sub-transmission system and a distribution system which are the synchronous generators type and the goal of this thesis is the study of this kind of sources. In our study, the source of the product is dispersed, which is the type of fuel and fuel of the generator type and the end of the source on the source.
The low inertia and long-time fault clearing in the distribution system lead to instability of the generators, so for avoiding transient instability of small scale synchronous generators, the superconductor fault current limiter is used.
The purpose of this thesis is to achieve the optimal structure of the superconductor fault current limiter flux lock type that the instability of synchronous generators doesn't happen in a fault condition.
For this purpose, a sub-transmission station was simulated to evaluate the instability of these sources.
For evaluate of small scale synchronous generators, they are placed in sub-transmission station and distribution feeder then the transient stability parameters are studied.
According to resistive and inductive characteristics of SFCL- Flux Lock type, the value impedance of SFCL that avoid the instability of sources at Specified time will be achieved by the DIgSILENT software.
In the following, SFCL- Flux Lock type is modeled in finite element software that its impedance is calculated according to objective functions by the DIgSILENT software, the optimal structure will achieve by the PSO algorithm.
In this section by utilizing the COMSOL live link to MATLAB, the optimal dimensions of SFCL will achieve which its 3D object will simulate in FLUX software then the multi-physics analysis will be done.
