Intelligent Reactive Power Compensation Controller Design

The necessary and the economic benefit of reactive power compensation are analyzed in the paper, based on the essential principle. Some different kinds of basic methods of reactive power compensation are discussed, and the problem of the optimum size for Shunt Capacitor Bank(SCB) is analyzed. The abnormal performances of SCB in running status are researched and resolved.Based on the TSC reactive compensation equipment, a new low-voltage intelligent controller is designed, which can slove switched-capacitor without instantaneous rush current by means of zero-crossing triggering of SCR components, and can realize auto-tracking reactive power, compensating and auto-switching SCB. MSP430F149 MCU is used as its core controller. It is shown that the algorithm in hand has the vantage of decreasing power loss and lowers of voltage and increasing the distribution system efficiency, for example power factor. The controller measures and monitors parameters of electric network, then saves preterit data of 60 days which is the evidence of the running status of electric network. And then the running curve of parameters is gained by background data process of computer. In order to conveniently realize communication between controller and operator, the method of wireless communication is applied in the control field and remote communication is solved by RS485 interface.After the running test of the controller, the device has been put into use.