Capacitor Group Zero-Crossing Switching Control System Design

Abstract:

Nowadays, the most of the load is inductive load in the factory. However, power factor is reduced by the phase difference of voltage waveform and current waveform which made by inductor. So many company adopt the compensation mode of parallel capacitor. However, randomly switch for capacitor group make the great harm to power supply system. In order to solve this problem, this paper designs a kind of intelligent synchronous switch. This switch can be switched in the alternating current zero. This switch takes PIC16F877A as core, using of magnetic keeping relay as the executing agency. The experimental results show that the design of this system is reasonable and can make more contribute to enhance the transmission electric efficiency of electrical factory.

• Periodical: Advanced Materials Research (Volume 748)
• Pages: 506-509
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.748.506
• Online since: August 2013
• Authors: Dao Shun Wang, Qiang Zou
• Keywords: Fault Detection, PIC16f877a, Zero-Crossing Switching

References

[1] Liu Tongli: Development of the Phase Selection Controller for Parallel Compensation Permanent Magnetic Mechanism Circuit Breaker(Shenyang University of Technology master's degree thesis, China 2008).

[2] Hu Nan: Investigations on Controlled Switching of Shunt Reactor (Dalian University of Technology master's degree thesis, China 2011).

[3] Yang Zhongqing: Investigations on Controlled Switching of Power Transformer(Dalian University of Technology master's degree thesis, China 2010).

[4] Tong Shibai, Hua Chengying, in: Analog Electronic Technology, Higher Education Publising, Beijing(2006), in press.