Power Quality Enhancement Using Unified Power Flow Controller in Standalone Grid Connected Solar PV System

2018 ◽  
Author(s):  
Kritika Jain ◽  
Annapurna Bhargava ◽  
Bulbul Mewara
Keyword(s):  
Power Quality ◽  
Power Flow ◽  
Quality Enhancement ◽  
Unified Power Flow Controller ◽  
Solar Pv ◽  
Pv System ◽  
Solar Pv System ◽  
Flow Controller ◽  
Power Flow Controller

scholarly journals Unified Power Flow Controller for Non-Linear Loads Using Adaptive Power Quality Theory

2019 ◽  
Vol 9 (2) ◽  
pp. 61-67
Author(s):  
Jaya Raju Gaddala ◽  
Sambasiva Rao Gudapati
Keyword(s):  
Power Quality ◽  
Power Flow ◽  
Reactive Power ◽  
Unified Power Flow Controller ◽  
Q Theory ◽  
Non Linear ◽  
Source Current ◽  
Flow Controller ◽  
Power Flow Controller ◽  
Load Conditions

Harmonics reduction techniques in source current were found to be unreliable and imbalanced with different load conditions. This certain unreliability problem in harmonics mitigation is caused by non-linear loads. The harmonics and power quality problems are eliminated by filters. These filters are expensive to provide a dynamic response under various load conditions. The new unified power flow controller composed of a series and shunt compensator provides more secured power systems and good voltage stability at various load conditions. D-Q theory is used to generate the reference current from the AC source current. D-Q theory produces sinusoidal harmonics that are opposite to load harmonics. This UPFC can absorb or inject reactive power in the PCC. D-Q theory followed by a hysteresis current controller generates PWM pulses to the shunt and series compensator. The PI and fuzzy logic controllers preserve the DC link voltage in the storage capacitor. The proposed technique has been simulated by using Matlab simulation under different load conditions.

scholarly journals Improvement of Power Quality in Distribution System using Photovoltaic based DPFC

2021 ◽  
Vol 9 (VI) ◽  
pp. 1038-1042
Author(s):  
Mahesh Shende
Keyword(s):  
Power Quality ◽  
Distribution System ◽  
Power Flow ◽  
High Reliability ◽  
Photovoltaic System ◽  
Unified Power Flow Controller ◽  
Distributed Power ◽  
Flow Controller ◽  
Distributed Power Flow ◽  
Power Flow Controller

In Modern Power System power quality is the main issue of the power companies. Improvement of power quality in distribution system using photovoltaic based DPFC is declared in this paper. Flexible AC Transmission System (FACTS) device which is known as distributed power flow controller (DPFC)is used. DPFC is derived from UPFC by eliminating common dc link between series and shunt converter. Unified power flow controller (UPFC) is widely used and control all parameters of the system. The UPFC handle the current and voltage with high rating; therefore, the cost of system is high. Therefore, distributed power flow controller (DPFC) is used due to high control capability, high Reliability & low cost. DPFC also measures the transmission angle, line impedance and bus voltage. In distribution system problems occur like voltage sag/swell, Harmonics etc. Photovoltaic system is used as source for DPFC.

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