Preface -- Chapter1: Introduction -- Chapter2: Fundamentals of Reactive Power in AC Power Systems -- Chapter3: Reactive Power Role in AC Power Transmission Systems -- Chapter4: Reactive Power Compensation in Energy Transmission Systems With Sinusoidal and Nonsinusoidal Currents -- Chapter5: Reactive Power Importance in Wind Power Plants -- Chapte6: Reactive Power Control and Voltage Stability Problem -- Part 1: Fundamentals and Contemporary Issues of Reactive Power Control in AC Power Systems -- Chapter7: Reactive Power Control and Voltage Stability Problem -- Part 2: Chaper8: Reactive Power Compensation in AC Power Systems -- Chapter9: Modern Solution for Dynamic Reactive Power Compensation -- Chapter10: Optimal Placement of Reactive Power Compensators in AC Power Networks -- Chapter11: Reactive Power Optimization in AC Power Systems -- Chapter12: Implementing Reactive Power Optimization Using Digsilent and Matlab -- Chapter13: Multi-Objective Optimal Reactive Power Dispatch Considering Uncertainties in the Wind Integrated Power Systems -- Chapter14: Reactive Power Optimization Effects on Relays Coordination in AC Power Systems -- Chapter15: Communications for Electric Power Systems -- Chapter16: Scada Applications for the Electric Power System -- Chapter17: The Effect of Geomagnetic Storms on the Electricity Networks -- Chapter18: Electric Transmission Lines Environmental Impact Monitoring.