Photovoltaic power plants usually do not provide reactive output; hence the application of large photovoltaics in systems will decrease voltage stability level system. Capacitor banks can to compensate photovoltaic plants; therefore, capacitor overcome deficiency plants. However, effect bank installation on system’s is unknown. Therefore, research aims investigate whether installing a capacitor...

This paper presents the effect of preload on static and dynamic performance characteristics of several gas-lubricated noncircular journal bearing configurations. The linearized system approach using finite element method is used to obtain both steady state and dynamic characteristics. The results of the investigation shows that preload has a significant effect on frictional power loss and the ...

Finding the collapse susceptible portion of a power system is one of the purposes of voltage stability analysis. This part which is a voltage control area is called the voltage weak area. Determining the weak area and adjecent voltage control areas has special importance in the improvement of voltage stability. Designing an on-line corrective control requires the voltage weak area to be determi...

Finding the collapse susceptible portion of a power system is one of the purposes of voltage stability analysis. This part which is a voltage control area is called the voltage weak area. Determining the weak area and adjecent voltage control areas has special importance in the improvement of voltage stability. Designing an on-line corrective control requires the voltage weak area to be determi...

—This paper proposes a method of real-time voltage stability assessment for load areas, in which the proximity to voltage collapse point at each bus can be accurately evaluated. Based on the non-iterative holomorphic embedding method (HEM), the voltage of each bus for different loading levels in the load area is quickly screened out by only performing one-time power flow calculation. A power se...

Power systems are operating under stressed condition due to continuous increase in demand of load. This can lead to voltage instability problem when face additional load increase or contingency. In order to avoid voltage instability suitable size of reactive power compensation at optimal location in the system is required which improves the load margin. This work aims at obtaining optimal size ...

In this report, we aim to realize an ultra-low-power Static Random Access Memory (SRAM) realized on a different logic conversion block from traditional 6T SRAM, referring to Source-Coupled-Logic (SCL) based topology. It enables low supply voltage operation possible to effectively reduce power consumption according to the relationship, . The supply voltage in this report is lowered to 0.5V and t...

The detection of potential voltage collapse in power systems is essential to maintain the stability heavy load demand. This paper proposes a method detect weak buses using two indices: margin factor (dS/dY) and prediction index (VCPI). Hence, aims improve Iraqi transmission grid by allocating FACTS devices optimal locations sizes. Two types are used this which Thyristor controlled series compen...

in this paper, a novel neuro-fuzzy based method combined with a feature selection technique is proposed for online dynamic voltage stability status prediction of power system. this technique uses synchronized phasors measured by phasor measurement units (pmus) in a wide-area measurement system. in order to minimize the number of neuro-fuzzy inputs, training time and complication of neuro-fuzzy ...

This research proposed an optimal control approach for a smart grid electrical system with photovoltaic generation, where the variables are voltage and frequency, which aims to improve performance through addressing need balance between minimization of error operational cost. The scheme incorporates latest advancements in heuristics hierarchical strategies provide efficient effective solution c...