نتایج جستجو برای: dynamic voltage stability prediction

تعداد نتایج: 1019330  

A static synchronous compensator (STATCOM) is generally used to regulate voltage and improve transient stability in transmission and distribution networks. This is achieved by controlling reactive power exchange between STATCOM and the grid. Unbalanced sags are the most common type of voltage sags in distribution networks. A static synchronous compensator (STATCOM) is generally used to maintain...

Journal: :the modares journal of electrical engineering 2007
asghar akbari froud hossein seyfi ali khaki sedigh

voltage stability may be improved by various control functions. in this paper, it is shown that how high side voltage control (hivc) may be employed for this purpose. two test systems, namely a 22- bus and ieee u8-bus systems are used to demonstrate the proposed tuning strategy for hsvc control parameters.

2006
Mohammad Sharifkhani

The explosive growth of battery operated devices has made low-power design a priority in recent years. Moreover, embedded SRAM units have become an important block in modern SoCs. The increasing number of transistor count in the SRAM units and the surging leakage current of the MOS transistors in the scaled technologies have made the SRAM unit a power hungry block from both dynamic and static p...

2013
P. P. Jagtap R. H. Adware

FACTS devices can help the damping of power system oscillations. The objective of this paper is to design and propose a systematic approach for damping controller to validate results by comparing with lab prototype. This paper presents a control scheme, comprehensive analysis and result obtained for the dynamic control of power transmission, damping of oscillations with Unified Power Flow Contr...

2005
Li-Jun Cai István Erlich

This paper presents a novel approach for power system dynamic voltage stability analysis based on the multi-input multi-output (MIMO) transfer function. The MIMO system is defined taking into account the critical nodal voltages as outputs and possible control variables as the input. Based on the modal analysis and singular value analysis, the dynamic voltage stability analysis is carried out. T...

2013
Kumar Reddy

This paper presents an AC Transmission system power flow controlled by injecting a compensating voltage in series with the line and injecting reactive power in shunt with the bus. Static Synchronous Series Compensator (SSSC) and Static Synchronous Compensator (STATCOM) are utilized as a series and shunt compensation, respectively while Unified Power Flow Controller (UPFC) is considered as a shu...

A Rahmani A.R Shahani, G Rezazadeh

In the present work the pull-in voltage of a micro cracked cantilever beam subjected to nonlinear electrostatic pressure was studied. Two mathematical models were employed for modeling the problem: a lumped mass model and a classical beam model. The effect of crack in the lumped mass model is the reduction of the effective stiffness of the beam and in the beam model; the crack is modeled as a m...

2001
C. A. Belhadj M. A. Abido

This paper proposes a Neural Network-Based method for on-line maximum loadability estimation, for an optimized power system voltage stability profile. A simulated annealing optimization technique for optimal voltage stability profile through out the whole power network was used. The minimization of the voltage stability index at each individual load bus as well as the global voltage stability i...

2012
B. K. Saha Roy A. K. Sinha A. K. Pradhan

This paper presents a technique for real-time predictionof stability/instability of a power system based on synchrophasor measurements obtained from phasor measurement units (PMUs) at generator buses.For stability assessment the technique makes use of system severity indices developed usingbus voltage magnitudeobtained from PMUs and generator electrical power. Generator power is computed using ...

2016
Zetty Adibah Kamaruzzaman Azah Mohamed

This paper presents the impact of grid-connected photovoltaic (PV) generator on dynamic voltage stability of a power distribution system by considering solar intermittency, PV penetration level, and contingencies such as line outage and load increase. The IEEE 13 node test feeder is used as a test system, and a solar PV of 0.48 kV/0.5 MVA is integrated into the test system. Test results show th...

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