With the development of high temperature superconducting wire and related cryogenic technology, applications of superconducting device in power system has become the new hot spot of power engineering science research. As a perfect union of two revolutionary technologies, superconducting technology and FACTS, Superconducting Magnetic Energy Storage device (SMES) have superior properties and wide application. This article presents methods to selecting installation site of SMES device in the power system.
Sensitivity method is to get the level of sensitivity of dependent variable to independent variable by using differential relationship of some physical quantities in the system. It has been widely used in the analysis and control of power system. From the point of time, sensitiveness analysis method can be divided into two categories, static sensitivity and trajectory sensitivity. And according to the different considered variables, they are reviewed respectively in this paper. Application of sensitiveness analysis method in the power system reflects essential research value.
With the development of modern technology, high quality power supply becomes more desirable in everyday life. Among problems related with the power quality, the most urgent is the voltage dip; with the application of power electronics devices, the power system is polluted by harmonics. SMES (Superconducting Magnet Energy Storage) system can not only compensate the voltage dip, but also provide a load-fluctuation compensation and active power filter. In the paper the main structure of SMES system is introduced; the necessity to use SMES are demonstrated by analyzing the problem of power quality. The analysis shows that SMES system is effective in improving the power quality.
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