Power Trading and Congestion Management Through Real Power Rescheduling Using Unified Power Flow Controller

This paper focuses on three key issues of the power system that is stability enhancement, minimization of real power losses, and improving voltage profile of the buses by placing the Unified Power Flow Controller (UPFC) to the best location in WSCC 3 machine 9 bus system. The comparison between with and without UPFC is carried out to prove that UPFC enhances the stability of the multi machine power system. In this paper the best location of the UPFC is recognized by Power Flow Analysis. Eigen Value Analysis and Continuation Power Flow (CPF) is employed to show the performance of UPFC for stability enhancement. The analysis is carried out using Power System Analysis Toolbox (PSAT) software.

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Certain Investigation of Real power flow control of Artificial Neural Network based Matrix converter-Unified Power Flow Controller in IEEE 14 Bus system

International Journal of Computer Communication and Informatics ◽

10.34256/ijcci2026 ◽

2020 ◽

Vol 2 (2) ◽

pp. 54-81

Author(s):

Boopalan C ◽

Saravanan V.

Keyword(s):

Power System ◽

Power Control ◽

Power Flow ◽

Transmission System ◽

Matrix Converter ◽

Unified Power Flow Controller ◽

Real Power ◽

Flow Controller ◽

Power Flow Controller ◽

Switching State

The power consumption is rapid increased due to ASD (Adjustable Speed Drives) and automation in industries and large consumption of electricity in domestic regions increased the concern of the power quality. The quality of the power received in the Distribution system is altered because of the losses in the transmission system. The losses in the transmission system is mitigated using the FACTS (Flexible AC Transmission System)controller among these controllers UPFC (Unified Power Flow Controller) plays a vital role in controlling the shunt and series reactive powers in the bus of the power system. The conventional topology of the UPFC consists of AC-DC converter and energy stored in the DC link and DC-AC converter injected a voltage in series to the bus which as to be controlled. Whereas a new topology based on matrix converter can replace the dual converters and perform the required task. The construction of 2-bus, 7-bus and IEEE-14-bus power system is designed and modeled. MC-UPFC (Matrix Converter Based Unified Power Flow Controller) is designed and constructed. The MC-UPFC is the rich topology in the FACTS which is capable of controlling both the transmission parameters simultaneously with the switching technique of Direct power control by the smooth sliding control which gives less ripple in the injecting control parameters such as control voltage [Vc] and voltage angle [α]. By implementing MC-UPFC the real and reactive power can be controlled simultaneously and independently. The control techniques were designed based on the Proportional Integral derivative(PID) with sliding surface power control, FLC (Fuzzy Logic Controller) and ANN (Artificial Neural Network) and the performance of Vc and α of the controllers are investigated. Hence the sliding surface and relevant control switching state of the MC can be controlled by the FLC which gives the robust and autonomous decision making in the selection of the appropriate switching state for the effective real power control in the power system. The work has been carried out in the MATLAB Simulink simulator which gives the finest controlling features and simple design procedures and monitoring of the output.

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Augmentation of Real Power from Renewable Energy Sources across the DC Link of the UPFC Using Fuzzy Logic Control Scheme

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.573.66 ◽

2014 ◽

Vol 573 ◽

pp. 66-71

Author(s):

K.A. Rani Fathima ◽

T.A. Raghavendiran

Keyword(s):

Fuzzy Logic ◽

Power Flow ◽

Reactive Power ◽

Renewable Energy Sources ◽

Electrical Power ◽

Unified Power Flow Controller ◽

Power Sources ◽

Real Power ◽

Flow Controller ◽

Power Flow Controller

The Unified Power Flow Controller (UPFC) is accepted as the versatile Power Flow Controller between electrical power nodes or power sources many times referred to as the buses. Regulation of real and reactive power flow between power nodes can be achieved in the desired manner using the UPFC. In this paper it is demonstrated how additional real power sources like Wind and Photo Voltaic Solar power sources can be augmented into the DC link of the UPFC and supplementing the seamless performance of the UPFC. Fuzzy Logic has been chosen to be the controller as it is moderately robust and its usefulness in this application is compared and contrasted against traditional PI controller. MATLAB / SIMULINK based simulation environment has been used for demonstrating the validity of the proposed schemes.

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