Authors: Xiaoying Zhang, Cunlu Dang, Li Chai
Addresses: School of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou, 730050, China. ' School of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou, 730050, China. ' School of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou, 730050, China
Abstract: Generator synchronising is an important and frequent operation in the power system. A new-style generator quasi-synchronising device based on AT89S52 SCM and CPLD is studied in this paper. In order to avoid great impact current, the voltage magnitude, frequency and phase difference between two sides of the breaker must be permitted, otherwise the frequency and the voltage of the generator will be adjusted. The AT89S52 and CPLD act as the core in the hardware design and the hardware includes eight modules. The configuration program idea is adopted in the software design which includes main program and many subprograms. The structure of the device is simple, the reliability is high and the maintenance is easy. The measures of the frequency, voltage and phase are automatically finished and the intelligent frequency and voltage adjustments are realised in the new synchronising device. The simple interface makes parameters setup simple. The functions of the sample are steady and dependable after running for several months.
Keywords: automatic quasi-synchronising; single chip multiprocessors; SCM; complex programmable logic device; CPLD; synchronous generators; automatic measure; intelligent adjustment; simulation.
International Journal of Modelling, Identification and Control, 2009 Vol.7 No.4, pp.388 - 391
Published online: 14 Aug 2009 *Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article