Study on Reactive Power and Voltage Control in Large Grid Based on Sensitivity Analysis

Following the large development of grid, the emerging problem of reactive power and voltage mismatch is given an in-depth analysis in this paper, and the ideal control state and mismatch control state are distinguished. Then for the problem of reactive power and voltage mismatch, this paper presents a method of power Jacobian matrix and level of sensitivity to analyze the problem qualitatively in order to acquire the regulation strategy and direction. Finally, the Example of 14- bus system shows it is an effective method in the analysis.