Optimal Power Flow for Transmission System with Photovoltaic Based DG Using Biogeography-Based Optimization

2018 ◽  
Author(s):  
Mustafa Mosbah ◽  
Rabie Zine ◽  
Salem Arif ◽  
Ridha Djamel Mohammedi ◽  
Seddik Bacha
Keyword(s):  
Power Flow ◽  
Optimal Power Flow ◽  
Transmission System ◽  
Optimal Power

scholarly journals Comparative Analysis of a Performance of Metaheuristic Algorithms in Solving Optimal Power Flow Problems with UPFC Device in the Transmission System

2021 ◽  
Vol 9 (5) ◽  
pp. 316-326
Author(s):  
K. Padma ◽  
Yeshitela Shiferaw Maru
Keyword(s):  
Optimization Algorithm ◽  
Power Flow ◽  
Optimal Power Flow ◽  
Reactive Power ◽  
Test System ◽  
Transmission System ◽  
Voltage Profile ◽  
Proper Position ◽  
Optimal Position ◽  
Optimal Power

Incremental industrialization and urbanization is the cause of enhanced energy use as it increases the building of new lines and more inductive loads. As a result, the transmission system losses increased, and the magnitudes of voltage profile values deviated from the stated value, resulting in increased cost of active power generation. To mitigate these issues, adequate reactive power compensation in the transmission line and bus systems should be done. Reactive power is regulated by the proper position of the Flexible AC Transmission System (FACTS). Unified Power Flow Controller (UPFC) is a voltage converter system that increases the voltage profile and reduces loss. In this paper, the optimal power flow solution is considered using a FACTS device based on Multi Population Modified Jaya (MPMJ) optimization algorithm. Using the Analytical Hierarchy Process (AHP) system, the optimal position of the UPFC device is determined by considering the most useful objective function provided by priorities and weighting factors. Therefore, on the standard IEEE-57 bus test system, the proposed MPMJ optimization algorithm is implemented with UPFC for optimal fuel cost values of generation, real power loss, voltage deviation and sum of squared voltage stability index. The result obtained by the proposed algorithm is contrasted with the recent literature algorithm

scholarly journals An Interior-Point Solver for Optimal Power Flow Problem Considering Distributed FACTS Devices

2020 ◽  
Author(s):  
Bo Liu ◽  
Lawryn Edmonds ◽  
hang zhang ◽  
Hongyu Wu
Keyword(s):  
Interior Point ◽  
Cyber Security ◽  
Power Flow ◽  
Optimal Power Flow ◽  
Economic Benefits ◽  
Transmission System ◽  
Cyber Attacks ◽  
Facts Devices ◽  
Optimal Power ◽  
Ac Transmission

In this paper, we propose an AC optimal power flow (ACOPF) model considering distributed flexible AC transmission system (D-FACTS) devices, in which the reactance of D-FACTS equipped lines are introduced as decision variables. This is motivated by increasing interests in using D-FACTS devices to address system operational and cyber-security concerns. First, D-FACTS devices can be incorporated in real-time operations for economic benefits such as managing power congestions and reducing system losses. Second, D-FACTS devices can be utilized by moving target defense (MTD), an emerging concept against cyber-attacks, to prevent attackers from knowing true system configurations. Therefore, system operators can use the proposed ACOPF model to achieve economic benefits and provide the setpoints of D-FACTS devices for MTD at the same time. In addition, we rigorously derive the gradient and Hessian matrices of the objective function and constraints, which are further used to build an interior-point solver of the proposed ACOPF. Numerical results on the IEEE 118-bus transmission system show the validity of the proposed ACOPF model as well as the efficacy of the interior-point solver in minimizing system losses and generation costs. <br>

scholarly journals An Interior-Point Solver for Optimal Power Flow Problem Considering Distributed FACTS Devices

2020 ◽  
Author(s):  
Bo Liu ◽  
Lawryn Edmonds ◽  
hang zhang ◽  
Hongyu Wu
Keyword(s):  
Interior Point ◽  
Cyber Security ◽  
Power Flow ◽  
Optimal Power Flow ◽  
Economic Benefits ◽  
Transmission System ◽  
Cyber Attacks ◽  
Facts Devices ◽  
Optimal Power ◽  
Ac Transmission

In this paper, we propose an AC optimal power flow (ACOPF) model considering distributed flexible AC transmission system (D-FACTS) devices, in which the reactance of D-FACTS equipped lines are introduced as decision variables. This is motivated by increasing interests in using D-FACTS devices to address system operational and cyber-security concerns. First, D-FACTS devices can be incorporated in real-time operations for economic benefits such as managing power congestions and reducing system losses. Second, D-FACTS devices can be utilized by moving target defense (MTD), an emerging concept against cyber-attacks, to prevent attackers from knowing true system configurations. Therefore, system operators can use the proposed ACOPF model to achieve economic benefits and provide the setpoints of D-FACTS devices for MTD at the same time. In addition, we rigorously derive the gradient and Hessian matrices of the objective function and constraints, which are further used to build an interior-point solver of the proposed ACOPF. Numerical results on the IEEE 118-bus transmission system show the validity of the proposed ACOPF model as well as the efficacy of the interior-point solver in minimizing system losses and generation costs. <br>

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