A novel modularized low voltage reactive power compensation device based on Controller Area Network

There are many ubiquitous shortcomings in the existing low voltage reactive power compensation device, especially the unreasonable centralized system structure. These deficiency lead to expensive equipment investment and other problems which will limit its application. Distributed system structure is better than centralized system structure for low voltage reactive power compensation device out of consideration for flexibility, reliability and expansibility. In this paper, a novel modularized low voltage reactive power compensation device based on controller area network, routing bus and power bus is put forward. Under this new system topological structure, controller area network bus links all the compensation modules for communication, the main circuit of all the compensation modules are linked as a whole system through the routing bus and power bus. The software program of this new device is also improved by means of integrated intelligent control principle and compensation capacity dynamic modification. The contrastive analysis and practical test show that the novel device has better compensation effect and performance index relative to the traditional product.