Stability Study of Power System

Abstract

The theory of power system stability, necessary of power system stability and different methods for analysis of power system stability has been developed in this paper. The objective of this paper is to investigate and understand the stability of power system, with the main focus on stability theories and power system modeling. The paper first explained the definition of power system stability and the need for power system stability studies. Next the paper examined the concept of system stability and some stability theories. The paper then performed a power system modeling and simulation of a twomachine, three bus power systems. The performance of the power system was simulated. The operating points and system parameters were varied to test the robustness of the power system. From various stability systems, in this paper, only transient analysis is studied. Examples of the parameters that were varied include the fault position λ, the power angle δ and the mechanical power input m P. A software using MATLAB has been developed for this purpose. Finally we compare various stability responses by varying power angle, fault position and mechanical power.

Total power deficiency estimation of isolated power system network using full-state observer method

“…Therefore, the solution for the observer gain in the pole placement is not feasible. Hence, to ensure the feasibility of the pole placement and achieve the stable observer system, the output state of the augmented system ( ) in (8) was modified by adding with the output state matrix ( ) in (9). Then, the equation can be written.…”

“…The stability condition is achieved when the dynamical behavior in the generation side is able to sustain for any level of demand and ensured the dynamical frequency network within the permissible level. A review on stability in power system network has been discussed in [4]- [9]. The investigations on the influence of frequency load control on the islandic power system network fed by mixed generation sources are reported in [10]- [13].…”

FLC based on static var compensator for power system transient stability enhancement

“…As a result of this overload, the transient stability issue appeared [2]. Transient stability is the capability of a system to be able to return to its normal state after experiencing large disturbances such switching on-off lines and faults [3,4]. In recent decades, devices under the term FACTS have emerged, which have greatly helped improve the stability of power systems by controlling system voltage [5].…”