In this paper a new modification algorithm has been proposed to improve the transient response of the conventional second order CP-PLL system. The performances of the proposed system have been examined by solving the system equations numerically. Some analytical results are incorporated to confirm the performance enhancement of the conventional system by this proposed modified algorithm. Theore...

Voltage stability issues are growing challenges in many modern power systems. This paper proposes optimizing the size and location of Static VAR Compensator (SVC) devices using a Fuzzy Weighted Seeker Optimization Algorithm (FWSOA), as an effective solution to overcome such issues. Although the primary purpose of SVC is bus voltage regulation, it can also be useful for voltage stability enhance...

Further characterization of the viral enhancement system of varicella-zoster virus by the pesticide carbaryl (1-naphthyl-N-methylcarbamate) is presented. It was necessary to expose cells to the enhancing chemical during the period of virus replication to detect enhancement. The optimum time for the pretreatment is 20 to 24 h. Maximum enhancement of virus expression occurs 48 to 72 h post-inocul...

in methods presented to calculate the voltage collapse point, the transmission system is usually the only part of the power system that is completely modeled. distribution systems are often replaced by aggregate load models because the use of the detailed model of distribution systems in voltage stability analysis not only increases the computation time, but also decreases the probability of co...

Abstract: This paper addresses the stability issue of the meshed DC distributed power systems (DPS) with constant power loads (CPLs) and proposes a stability enhancement method based on virtual harmonic resistance. In previous researches, the network dynamics of the meshed DC DPS are often ignored, which affects the derivation of the equivalent system impendence. In addition, few of them have c...

Many of papers refers to study of application for FACTS. Especially for using reactive compensators for 500KV power system in order to increase the static voltage stability margin and transient stability enhancement have considered. However the selection of suitable Var source (STATCOM or SVC) also need to be considered. The purpose of this paper is to solve the above problems in order to sugge...

The effects of shunt compensation on power system transmission stability and modern approach of the reactive power control scheme have been investigated in this paper. Reactive power compensation is realized in shunt connection with two components: thyristor controlled reactor (TCR) and thyristor switched capacitor (TSC). A special attention has been given in the following paragraphs to a moder...