Research of New Type Power Quality Monitor System
First the paper expounds power quality problems in power grid. According to the characteristics of the steady state component and the transient component, DSP + ARM structure of electric power quality monitor system is designed. Then the paper mainly intr
- PDF / 532,067 Bytes
- 7 Pages / 439.37 x 666.142 pts Page_size
- 58 Downloads / 169 Views
Research of New Type Power Quality Monitor System Xiaohui Sun, Hongmei He, Ai-ning Li and Xin-li Jia
Abstract First the paper expounds power quality problems in power grid. According to the characteristics of the steady state component and the transient component, DSP ? ARM structure of electric power quality monitor system is designed. Then the paper mainly introduces the signal acquisition (DSP) part of hardware design: The hardware design includes the voltage signal acquisition, Antioxidant aliasing filter circuit design, A/D circuit design, phase-locked frequency circuit design; Finally power quality monitor system is applied in engineering field. Through a period of time to the monitoring data of test analysis found that new power quality monitor can be good to complete the design requirements, the desired effect for users to fully understand the site electrical energy environment provides scientific data. Keywords Power quality
DSP ? ARM Signal acquisition
85.1 Introduction Power quality monitoring is the electric power sector for itself and its key users with the important service, which is also gain power quality information of direct way. In modern power system, power quality problems can be divided into steady state and transient power quality two parts. Steady state power quality problems are waveform distortion for features, including the harmonics and noise, etc. [1].
X. Sun (&) H. He A. Li X. Jia School of Department of Electric Automation, Hebei Engineering and Technical College, Cang zhou 061001, People’s Republic of China e-mail: [email protected]
Z. Zhong (ed.), Proceedings of the International Conference on Information Engineering and Applications (IEA) 2012, Lecture Notes in Electrical Engineering 216, DOI: 10.1007/978-1-4471-4856-2_85, Ó Springer-Verlag London 2013
705
706
X. Sun et al.
Transient power quality problems usually in the spectrum and transient lasts for features, divided into pulse transient and oscillation transient two kinds. With the rapid development of the electric power industry, steady state power quality such as voltage fluctuation, frequency wave, harmonic, has caused enough attention. At the same time transient power quality problem is becoming more and more serious, such as voltage drop sharply, and short-term phenomenon often occur, has brought great loss to the user [2]. Based on the theory of effective value of traditional monitoring technology because of the time window is too long, the RMS has not only accurate description of the actual power quality problems, so must meet the requirements of the development of the new monitoring technology [3].
85.2 Design of the Power Quality Monitor System Along with the power and rapid development of industry, power supply both sides pay more and more attention to power quality problems. Power quality indicators includes not only the statistical indicators, such as voltage fluctuation, harmonic analysis, etc.; And emphasizes the requirement of real-time, to ensure that the transient index of the accurate anal
Data Loading...
