Application of Voltage and Lines Stability Index for Optimal Placement of Wind Energy with a System Load Increase Scenario | Bentham Science

摘要

Background: Modern power system operations often faced with very unsafe conditionscaused by voltage stability problems. If the problem cannot be controlled with the right method, thena cascade system can occur. This condition can cause a voltage reduction drastically and leads to apower outage.Objective: The Fast Voltage Stability Index (FVSI) and Line Stability Factor (LQP) implemented inthis study. Both indices can determine the optimal location and capacity of Wind Energy (WE) intothe grid to anticipate a sustained increase in load.Method: One type of optimization method, a new variant of Genetic Algorithms, is used to solve themulti-objective optimization problem known as Genetic Algorithm Sorting Non-Domination SortingII (NSGA-II). This algorithm can determine the optimal location and WE's capacity into the grid byminimizing line power loss (Ploss) of power system with a system load increase scenario. Bus voltagesecurity, thermal line limits, and stability system are used as obstacles to maintain the system in asafe condition due to the increasing the maximum load.Results: The method suggested in this paper has been adequately tested on modification of the IEEE14-bus standard test system connected to the WE. The WE integrated into the grid modeled using thePower System Analysis Toolbox (PSAT). Based on the multi-objective manner, the method developedcan determine the best location and capacity of the WE simultaneously by minimizing Ploss withSLI and satisfied all the system's security and stability constraints.Conclusion: The technique provides well-distributed non-dominated solutions and well explorationof the research space.