Distributed Reactive Power Compensation System Based On Zigbee

To prevent the voltage fluctuation of the power equipment and reduce the transmission loss reactive power compensation is an effective means.In recent years,the research on reactive power compensation technology is not only a hot issue in the industry,but also the basic requirements of building a strong power grid.Firstly,this paper presents a distributed open reactive power compensation system based on Zigbee wireless technology.Analyzed intelligent capacitive advantage when reactive power compensation.Determine the system structure and the work mode on the host control slave.Distributed compensation can effectively reduce the active power consumption problem and determine the compensation capacity.Application of Zigbee technology not only can enable wireless data transmission,but also can compensate for the system based on its open and flexible networking features.Secondly,in the view of the use of modern signal processing technology to calculate the reactive power,that is,the voltage and frequency fluctuations make the data sampling is not synchronized.On this basis,the method of reactive power algorithm based on Hilbert is proposed,which reduces the influence of harmonics.Before calculating reactive power,pre-synchronized sampling data,include grid frequency estimation and interpolation synchronization algorithm.By using Matlab simulation,compared with the ideal synchronous sampling data,to achieve synchronization of data.The processed data is brought into the Hilbert algorithm,and more accurate reactive power is obtained.The accuracy is higher in this method,which is not influenced by the frequency fluctuating and harmonic.Finally,for reactive power compensation system,describe the system components and functions implemented.Design master control circuit and Zigbee communication module.According to the design principle of hardware module peripheral circuits,achieve networking based on Zigbee,data transmission between Zigbee and PIC32 microcontrollers.The software design includes changing the data transmission mode based on Zigbee module,setting up the host and the slave node type,determining the communication protocol between the host and the slave.At last,the software process of each function is described.Through the testing experiment,this paper presents the method of reactive power calculation,in the power grid frequency fluctuations and contains harmonics,can not only estimate the frequency of the power grid,but also provide reliable data for other tests,and guarantee the accuracy of the results.Zigbee communication module can quickly and accurately transfer data to the microcontroller,which is composed of wireless communication network and overcome the limitation of cable transmission.