Application And Research Of Reactive Harmonic Control Device In The Power System Of Polyacrylamide Plant

The grid voltage is closely related to reactive power,and the harmonic injection also affects the normal operation of the power grid.The problem of power quality has been paid much attention in power system.In order to meet the requirements of safety,reliability and economic index,the research on reactive power compensation and harmonic suppression technology has far-reaching influence and significance.First of all,according to the power system harmonic and reactive powder device status,this paper demonstrates the feasibility of harmonic suppression and reactive power compensation device,and the harmonic control and reactive power compensation principle is analyzed,and provides a theoretical basis for harmonic suppression and reactive power integrated device research.Secondly,the performance of harmonic and reactive current detection methods are analyzed and compared.The Ip-Iq detection method based on instantaneous reactive power theory and PI control strategy based on BP neural network are studied.Final design of the shunt active power filter(HAPF)as the core and static var generator(SVC)integrated joint operation of the device,the device is composed of a plurality of thyristor structure identical thyristor switched capacitor SVC and HAPF devices in parallel with the grid,SVC and APF through mutually beneficial to realize the aim of comprehensive treatment.At the same time,the integrated device used in Daqing petrochemical company dry powder production equipment of power system,through the practice of data processing and analysis,proves that the device has a more reliable and more quick and sensitive advantages in improving the dynamic performance and stability of the system.