Inversion of real time spot prices in the direction of real power flow in a transmission line

2000 ◽  
Vol 15 (4) ◽  
pp. 1197-1203 ◽  
Author(s):  
A.G. Ward ◽  
N.R. Watson ◽  
C.P. Arnold ◽  
A.J. Turner ◽  
B.J. Ring
Keyword(s):  
Transmission Line ◽  
Real Time ◽  
Power Flow ◽  
Real Power ◽  
Spot Prices

Performance Investigation of D-Q Model for PI and Fuzzy Controller Based UPFC

2014 ◽  
Vol 573 ◽  
pp. 310-316 ◽  
Author(s):  
K. Poun Raj ◽  
V. Raja Sekaren ◽  
S. Selvaperumal ◽  
N. Mageswari
Keyword(s):  
Transmission Line ◽  
Power Flow ◽  
Reactive Power ◽  
Power Transmission ◽  
Fuzzy Controller ◽  
Voltage Drop ◽  
Electrical Power ◽  
Unified Power Flow Controller ◽  
Power Demand ◽  
Real Power

– The unified power flow controller (UPFC) is the most versatile and complex power electronic equipment that has emerged as the indispensable equipment for the control and optimization of power flow in electrical power transmission system. In this manuscript is investigated the control of real and reactive power flow through a transmission line with the use of UPFC at the sending end. Computer simulation using MATLAB Simulink is done and the behavior of the UPFC is studied. In the UPFC based control of transmission line parameter control systems, it is observed that whenever the SSSC sources some real power into the transmission line it is manifested as a voltage drop across the DC link. Reactive power demand is indicated as fall in the bus bar AC voltage. The fall of the DC link voltage is an indication of real power demand from the receiving end. Similarly a fall of the bus bar AC voltage is an indication of reactive power demand from the receiving end. Fuzzy Logic and PI controllers are used in this works, the control of DC voltage, AC voltage and power transfer.

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