Design of STATCOM for Power System Stability Improvement
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2016, Vol 4, Issue 3
Abstract
This paper presents the model of a STATCOM which is controlled externally by a newly designed Power Oscillation Controller (POC) for the improvements of power system stability and damping effect of an on line power system. The proposed POC consists of two controllers (PID & POD). PID parameters has been optimized by Ziegler Neches close loop tuning method. Both single phase and three phase faults has been considered in the research. In this paper, a power system network is considered which is simulated in the phase simulation method & the network is simulated in three steps; without STATCOM, With STATCOM but no externally controlled, STATCOM with Power Oscillation Controller (POC). Simulation result shows that without STATCOM, the system parameters becomes unstable during faults. It is the era of Digital World and this is possible only by the extensive use of electronic and power electronic devices. At the present time maximum electrical loads are nonlinear in nature. So they are very good for the use of human being but harmful to the “Power Quality”. Power should be in the prescribed limitation (International Standards) but because of nonlinear loads power is not bound in limitations and distorted. So Harmonics are Present and need to be mitigating to improve the performance of the loads. Both voltage and current harmonics are distorted but current harmonics are very common and give adverse effect on economical utilities of customers so that to mitigate shunt active power filter is used.
Authors and Affiliations
R. Hemalatha, M. Hari Prabhu, S. Bhuvaneshwari
Keywords
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