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Power quality, an essential issue in electricity, needs to be considered. One of the power quality problems is the power factor's wrong value. When a system has a wrong power factor value that can cause a voltage drop and increase power losses, because of that power factor value must be controlled. This research aims to raise and maintain the power factor value of an electrical power system. This research uses a static var compensator (SVC) to raise and maintain the power factor value to stay on the threshold. SVC is an electrical device that can compensate for reactive power in a system. Hence, SVC is needed so that it can keep the balance of the reactive power in a system. SVC can inject reactive power into the system by controlling thyristor gate firing time. SVC, used in this research, is a fixed capacitor and thyristor-controlled reactor (FC-TCR) based on fuzzy logic control (FLC). In the simulation, the system on load without SVC FC-TCR shows a power factor value of 0.79. Meanwhile, SVC FC-TCR is connected with the system, and the power factor value increases to 0.977. [ABSTRACT FROM AUTHOR]

The electrical system operation continuously approaches the stability threshold due to the demand growth over time. The continued of demand growth overtime can cause a voltage drop makes system becomes unstable. Placement of flexible alternating current transmission (FACTS) is an alternative to improve load margin of the system also improve the voltage profile of the system. The types of FACTS are unified power flow controller (UPFC), static var compensator (SVC), thyristor-controlled series capacitors (TCSC) and static synchronous series compensator (SSSC) respectively. The authors compare several FACTS on improving the stability of the tested system by improving their voltage profile in IEEE 14 bus test system. Using sensitivity index by performed continuation power flow (CPF) to know the placement of FACTS device is proposed. It is proven that the placement of FACTS in the system can improve system stability and reliability by increasing the voltage profile and loading margin. The placement of the UPFC in critical bus of IEEE 14 Bus system increase the maximum loading parameter by 0.22 p.u. (7.99%) and improve the voltage profile of bus 14 by 0.23 p.u. (34.86%). [ABSTRACT FROM AUTHOR]

To improve the voltage profile and reduce power losses in industrialization, one of the methods is by compensating for reactive power in the system, namely, installing a Static VAR Compensator (SVC) and setting the SVC reactive power injection value into an 11 kV distribution system to obtain an optimization value determined by simulation using ETAP software, fast decoupled load flow method, and simulation process with a trial-and-error approach. The 38th simulation produces the effect of changes in the value of SVC reactive power injection, namely a voltage drop of 150 Volt on each 11 kV bus, decreasing the reactive power of 3 kVar on Bus101 and 34 kVar on Bus102, reducing active power losses of 0.8 kW on Bus101 and 3.5 kW on Bus102 and reducing reactive power losses of 0.5 kVar on Bus101 and 3.1 kVar on Bus102. The value required for SVC minimum reactive power injection while still achieving improved working voltage profile and reduced power losses in the system is 0 kVar. The error values in this simulation are the phase voltage difference of 119 Volt or 1.07%, the difference in the active power of -1.459 MW or -8.15%, the difference in reactive power of 0.655 MVar 12.29%, and the difference in factor power of -2.8 or -2.92%. [ABSTRACT FROM AUTHOR]

Nowadays, electric power generation (active and reactive power) is usually transmitted over long distances to consumers. The losses of power in transmission lines are always present due to the impedance of lines. The correction of the power factor (pf) has become a necessity to regulate both the flowing of reactive power and voltage levels of the electric power system. Flexible Alternating Current Transmission Systems (FACTS) are modern controller instruments, used to improve work performance and reduce losses in the network. In this paper, the use of a shunt static VAR Compensator (SVC) was studied to improve the power flow, which means the improvement of the power factor of the grid lines. A MATLAB model was simulated to calculate the amount of capacitive or inductive reactive power that is required for compensating. Also, the correction has been taken under various loads and different locations of the SVC along the AC line. The obtained results of compensation methods were analyzed and showed a high correction for power factor by a percentage of ninety-eight. [ABSTRACT FROM AUTHOR]

Power loss and voltage drop occurred when the transmission line in loading condition caused by the current flow through impedence and its effect is to lower the performance of the transmisson line. Application of static var compensator (SVC) and capacitor bank as a way to improve the voltage profile and power loss. In this study, the two types of equipment were used to increase the performance of the transmission line with case study 150 kV Nort Sumatra of electric power transmission line. The simulation results using ETAP version 12.6 software show that after the installation of SVC and Bank capacitors, not only does the voltage on the installed bus system increase but also improves the voltage across the bus and reduces the number of system losses. From the simulation results before installing SVC, it is obtained losses decreased from 48.4656 MW to 43.1941 MW or 10.87%. Overall, the installation of capacitor bank losses decreased from 48.4656 MW to 43.5499 MW or as much as 10.14%. Based on simulation result, SVC and Capacitor Bank improved voltage profiles in transmission system. The simulation results can be concluded that to reduce the number of system losses it is more effective to install capacitors than SVC in the transmission system. [ABSTRACT FROM AUTHOR]

The Static VAR compensator (SVC) is the device widely used in many applications. There are transmission and distribution losses like variation in reactive power, distortion in power and current, instability of voltage and so on. The main feature of SV is its dynamic reaction which aids to recover from the losses. This paper mainly focuses on the applications of the SVC in various field such as balancing the distribution system, compensating reactive power in high-penetration, no-storage wind-diesel (HPNSWD) systems longitudinal power systems and so on. The application areas and the use of SVC is discussed. [ABSTRACT FROM AUTHOR]

The power quality issues area unit augmenting day by day thanks to the expansion of loading necessities. With the advancement of technology, the facility quality issues are often handled expeditiously by versatile electricity transmission (FACTS) devices like distribution static shunt synchronous compensator, static var reactive compensator, static synchronous series compensator, unified power flow controller etc. These FACTS devices provides solutions for power quality problems with the assistance of shunt device D-STATCOM which reinforces the facility quality by variable varied parameters of the system. The mathematical logic managemental is employed for the control purpose of the D-STATCOM. The performance of D-STATCOM with controller is evaluated with totally different load conditions: R-L load, linear load, nonlinear load and dynamic load. By incorporating D-STATCOM the voltage profile of distribution system are often greatly improved. A MATLAB Simulink model of D-STATCOM is planned that demonstrates the management of active and reactive power and thence maintains the voltage profile. [ABSTRACT FROM AUTHOR]

Static VAr compensators (SVCs) are one of the types of FACTs devices which can control the transmission line voltages. A SVC generally regulates and controls voltage to the required set point under the normal steady-state conditions as well as abnormal conditions. In addition, a SVC can also reduce losses, increase transfer capability and maintain a constant voltage. The stepped distance protection is used for the protection of long transmission line. The distance relay continuously measured the impedance of transmission line in terms of distance. The apparent impedance measured by the distance relay is also affected due to presence of static VAr compensator. This paper represents the modeling and simulation analysis of stepped distance protection along with static VAr compensator. A detailed model of SVC is proposed which is integrated into 230kV and 300km long transmission line system. Simulation results show the effect of SVC on stepped distance protection operation during the different kind of abnormal condition. In this paper represents the impact of SVC on relay load ability limit; the setting of SVC control parameter and mode of operation for SVC is taken in to consideration. [ABSTRACT FROM AUTHOR]

Demand for electricity is increasing rapidly, the consequence of this is a threat to the stability of the electrical system, one of which is the voltage stability. FACTS or flexible alternating current transmission system is an electronic equipment capable of regulating electrical power transmission that can be used to overcome stability problems. This research will analyze the use of SVC and STATCOM as an equipment model from FACTS to overcome the stability of the electric power system on the most critical buses. Simulations were carried out using PSAT using case studies: a 500 kV Java-Bali network. Then the stability of the voltage is observed using the help of the PV curve which can show the value of the voltage conditions in each operating condition. SVC installation in the Java-Bali 500 kV case does not reduce the active power losses or reactive power, but also the addition of length λ is 0.233 p.u. (6.01%) and compared to the addition of length λ at STATCOM of 0.149 p.u. (3.85%). [ABSTRACT FROM AUTHOR]