Usage of Interlinks in an Electrical Distribution System-A Boon in Reducing Reactive Power Requirement at the Load Bus
Usage of Interlinks in an Electrical Distribution System-A Boon in Reducing Reactive Power Requirement at the Load Bus.
Abstract:-It is observed that one of the reasons for voltage instability is voltage collapse. Generally the concept of reactive power management is used to mitigate voltage collapse. But in this work the fallowing novel concept is used. The mathematical derivations begin from the usage of the conventional voltage collapse indicators(VCPI) Interlinks are used in the power system to distribute real powers locally (Inter bus power transfer) to mitigate voltage collapse. Optimal assignment of Distributed generation capacities are found out at different buses to mitigate voltage collapse. A mathematical model is derived and this model helps to design a valid algorithm to take care of voltage collapse problems. The Implementation of the algorithm is done through a MATLAB program which is shown in the Appendix. But minimum reactive power is to be maintained in the system. Quadratic Programming is applied in the fields of Control and Communications [13], Optimizing the civil structural design[14],nonlinear programming applications are presented that have arisen in different industries, namely food and insurance[15], Economics portfolio selection, monopolists’ profit maximization, inequality constrained least-squares estimation, spatial equilibrium analysis, goal programming with quadratic preferences, and optimal decision rules [16] , But in this work Quadratic Programming is applied to find a way to mitigate voltage collapse in a power system.
Keywords: Voltage Collapse, Mitigation of Voltage Collapse, Inter Links, Inter Bus Power Transfer, Assignment of optimal value of real power , Distributed Power.
OBJECTIVES
As the load on a distribution system increases the load voltage decreases ultimately resulting in voltage collapse. The earlier method of mitigating voltage collapse was to pump reactive power during high loads and to improve the voltage profile of the system. But in this method real powers are optimally distributed among different buses to mitigate voltage collapse in the system. This is done by using inter bus power transfer. By maintaining minimum amount of reactive power in the system mitigation of voltage collapse is be possible by using Inter links.
INTRODUCTION
Modern power systems are designed to sustain high loads and complicated interconnections for reasons of reliability and economy. To manage such complex power systems, sophisticated control mechanisms are in place.