scholarly journals Optimal integration of different types of DGs in radial distribution system by using Harris hawk optimization algorithm

2020 ◽  
Vol 7 (1) ◽  
pp. 1823156
Author(s):  
Ponnam Venkata K. Babu ◽  
K. Swarnasri
Keyword(s):  
Radial Distribution ◽  
Optimization Algorithm ◽  
Distribution System ◽  
Radial Distribution System ◽  
Optimal Integration ◽  
Different Types

Capacitor Placement in Radial Distribution System Using Oppositional Cuckoo Optimization Algorithm

2018 ◽  
Vol 9 (3) ◽  
pp. 64-95 ◽  
Author(s):  
Sneha Sultana ◽  
Provas Kumar Roy
Keyword(s):  
Radial Distribution ◽  
Optimization Algorithm ◽  
Distribution System ◽  
Distribution Systems ◽  
Optimal Allocation ◽  
Reactive Power ◽  
Planning Problem ◽  
Radial Distribution System ◽  
Cuckoo Optimization Algorithm ◽  
Capacitor Placement

Capacitors in distribution systems are used to supply reactive power to minimize power loss. This article presents an efficient optimization algorithm named oppositional cuckoo optimization algorithm (OCOA) for optimal allocation of capacitor in radial distribution systems to determine the optimal locations and sizes of capacitors with an objective of reduction of total cost considering different constraints. To test feasibility and effectiveness of the proposed OCOA, it is applied on 22-bus, 69-bus, 85-bus and 141-bus radial distribution systems as test studies and the results are compared with other methods available in literature. Comparison between the proposed method in this article and similar methods in other research works shows the effectiveness of the proposed method for solving optimum capacitor planning problem in radial distribution system.

scholarly journals Linear programming technique based optimal relay coordination in a radial distribution system

2018 ◽  
Vol 7 (1.8) ◽  
pp. 51
Author(s):  
G. V. Nagesh Kumar ◽  
B. Sravana Kumar ◽  
B. Venkateswara Rao ◽  
P. V. S. Sobhan ◽  
K. Appala Naidu
Keyword(s):  
Linear Programming ◽  
Radial Distribution ◽  
Distribution System ◽  
Distribution Systems ◽  
Inequality Constraints ◽  
Programming Technique ◽  
Radial Distribution System ◽  
Dial Setting ◽  
Relay Coordination ◽  
Different Types

Now-a-days to ensure power continuity and system’s reliability the protection system is to be designed properly for distribution systems to handle the faults to avoiding the damage to the equipments and to the service engineers. Different types of relays with different working principles are used to detect different types of faults in the system. In order to avoid mal operation of relays, proper coordination is to be carried out. The objective of this paper is to maintain the relay coordination as well as to decrease the working time of relays by optimizing the values of time dial setting (TDS) using linear programming problem technique (LPP). The inequality constraints guarantee the coordination margin for each primary or backup relay pairs having a fault very close to the primary relay. Simulation is carried out on a IEEE 15 bus balanced radial distribution system with 3 different types of relays namely standard inverse, extremely inverse and very inverse relay and the results are presented and analyzed.

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