Identifying the Voltage Sags Vulnerability Area with Considering FACTS Devices

Shakeri, Sina; Naghizadeh, Mohadeseh; Esmaeili, Saeid

doi:10.1109/icee50131.2020.9260705

Cited by 8 publications

(6 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the fault occurs, voltages of some lines and buses reaches values lower than its voltage threshold. The area includes of these lines and buses is considered as the area of vulnerability related to voltage sag [25]. Results of fault analysis for line to line fault is shown in Table I and Table II.…”

Section: Faultsmentioning

confidence: 99%

Quasi-static Power Flow and Fault Analysis of Photovoltaic Farm

Zhang¹,

Zhu²,

Zhuo³

2023

International Journal of Science and Engineering Applications

View full text Add to dashboard Cite

This report first analysis quasi static power flow for photovoltaic power plant. Then, fault analysis for different symmetrical and asymmetrical fault is done. The system used is IEEE 39 bus New England system that a Photovoltaic farm with 500 MW power is connected to bus 24. Newton-Raphson Power flow method is used with Gauss-Jordan elimination method for matrix inversion in this power flow analysis. Different operation condition including faults are also considered for fault at bus 16. The results are validated with simulation in MATLAB software.

show abstract

Section: Faultsmentioning

confidence: 99%

Quasi-static Power Flow and Fault Analysis of Photovoltaic Farm

Zhang¹,

Zhu²,

Zhuo³

2023

International Journal of Science and Engineering Applications

View full text Add to dashboard Cite

show abstract

“…Another method for estimating voltage sags has been proposed in [22] which is costly and needs a very long period of time to achieve accurate results. Hence, authors in [1] and [23] have developed a systematic method for assessing and estimating the voltage sags performance in the absence and presence of alternating current transmission system (FACTS) devices. This method can be used for both radial and large meshed networks and its main advantages are the fast response, low cost and accurate result in investigating voltage sags performance [24].…”

Section: Voltage Sag Definition and Estimationmentioning

confidence: 99%

Improving the area of harmonic pollution and vulnerability to voltage sag for compatible and reliable operation of sensitive harmonic loads

Shakeri

Khajouei

Esmaeili

et al. 2022

IET Generation Trans & Dist

Self Cite

View full text Add to dashboard Cite

Nowadays, sensitive harmonic loads (SHLs) are being increasingly used in the industrial sector. SHLs generate harmonics and may become disconnected from the network when voltage sags occur at the point of common coupling (PCC). Here, a new approach is proposed to reduce harmonics distortion and establish a more reliable annual operation of SHLs by reducing the area of pollution (AOP) with harmonic and the area of vulnerability (AOV) to voltage sag, respectively. The proposed approach includes an innovative optimization problem for planning passive harmonic filters which is solved by the Non‐dominant Sorting Genetic Algorithm (NSGA‐II) on the basis of historical data of the industrial power grid. By doing so, a solution is obtained in which the costs of passive harmonic filters and financial costs due to grid losses and voltage sags are minimized. In order to assess the new proposed approach, an Iranian large copper mine electrical network equipped with SHLs is used. Results of using the new approach show that total harmonic distortion and grid losses decrease by nearly 80% and 15%, respectively and also, the voltage value at the PCC is improved which can assure the secure operation of SHLs. Moreover, decreased financial losses is obtained since voltage sags are reduced by 65%.

show abstract

“…Capacitor units in the structures of [21], [23]- [25], can be charged up to DC source value. Therefore, they have the same problems like unipolar generators.…”

Section: Introductionmentioning

confidence: 99%

“…In [26], a unipolar/bipolar structure has been introduced, in which a buck-boost converter is utilized for charging the capacitors up to several times of the DC source voltage. Also, different power quality issues like voltage sag can be reduced by the method proposed in [25]. This structure exploits two inductors as energy storage, one for positive pulses generation and another one for negative pulses generation [27].…”

Section: Introductionmentioning

confidence: 99%

ghiDevelopment of a Bipolar Marx Pulse Generator Using Buck-Boost Converter

Roshan¹,

Allahbakhshi²,

Farjah³

et al. 2023

International Journal of Science and Engineering Applications

View full text Add to dashboard Cite

A new structure of the Marx pulse generator for generating bipolar high-voltage pulses is introduced. This structure is composed of a buck-boost converter and connected to a low DC voltage source and several parallel diode-capacitor units. In the first stage, the inductor energy is supplied through the voltage source and in the next stage, the inductor energy is transferred to capacitors. For generating the pulses, voltage polarities of the capacitors are changed by a small inductor which is in resonant with the capacitors. Then, using a fast switch, the capacitors are connected in series to generate desirable high-level pulses. To have bipolar pulses, polarity of capacitors is inverted, alternatively. Modularity of the proposed structure enables us to increase number of the units for generating higher voltage level, straightforwardly.

show abstract

Identifying the Voltage Sags Vulnerability Area with Considering FACTS Devices

Cited by 8 publications

References 17 publications

Quasi-static Power Flow and Fault Analysis of Photovoltaic Farm

Quasi-static Power Flow and Fault Analysis of Photovoltaic Farm

Improving the area of harmonic pollution and vulnerability to voltage sag for compatible and reliable operation of sensitive harmonic loads

ghiDevelopment of a Bipolar Marx Pulse Generator Using Buck-Boost Converter

Contact Info

Product

Resources

About