Research On Voltage Stability And Reactive Optimization Configuration For 220kV Substations

Voltage is an important index measure of power quality, the quality of voltage on power system stability operation, reduce the loss of line, ensure the safety of industrial and agricultural production, improve product quality, reduce the power loss to have direct influence, thereby guaranteeing the quality of voltage is electrical system design and operation of the important task. Power grid voltage by the stability control also has been a major operation of the difficult and hot research problems. Based on the actual cases, langfang power grid in the research and design of 110 kV substations of 220kV strategy city bus, install shunt capacitors to raise grid compensation ability, reduce the loss and transformer itself langfang region can alleviate the reactive power shortage and improve langfang region the ability to resist grid accident.Reactive power optimization is the safety of the electricity system economy operation research important constituent. Reactive power optimization control is to enhance voltage qualification rate, reduce the power loss for the target. Paper designed the langfang grid global voltage reactive-power optimization control system, this system USES a grid's actual structure parameters and operation parameters of the simulation calculation, the trend for global optimization control to the local grid, and theoretical analysis data and practical monitoring data from a global perspective, comprehensive consideration of regional power grid is optimized, and adopts advanced model algorithm, the improved genetic algorithm, will computer technology and network organic combination of actual operation situation, and enhance the system voltage stability. Through high-voltage lines of SCADA data and correction of charging power, which can improve reactive power optimization control accuracy and validity, and good results have been achieved.