组合式电子互感器的理论和实验研究

基于反射式偏振干涉原理和模间干涉原理,研制出一种新型的可同时测量母线上的电流和电压的组合式互感器。这种互感器绝缘结构简单,电压测量与电流测量间无相互干扰,为消除外界干扰、提高系统的测量精度提供了理论根据。

干涉式电压互感器的有限元分析

设计一种新型的光纤电压互感器以满足电力工业发展对高压电压互感器的要求,成为国内外的研究热点,为此基于石英晶体的逆压电效应,研制了一种双模干涉式的电子电压互感器并给出其基本原理即利用两个低阶模的干涉原理改善电压互感器的性能,为消除外界干扰、提高系统的测量精度提供理论根据。利用有限元软件对该互感器传感头进行电场强度分析和研究的结果显示:在峰值电压作用下,互感器传感头无击穿现象,满足了工程的需要,为光学电压互感器的电压测量的稳定性提供了理论依据。该互感器信号的感应和传输都在光纤中进行,光路结构简单,抗干扰能力强,准确度高,安全可靠,是光学电压互感器设计的一种新思路。

NEW METHOD OF FORMATION DESIGN FOR BOTH GMTI AND INSAR USING DISTRIBUTED SATELLITES

This letter proposes a method for designing a specific formation of satellites where the flying motion only exists in a circle orbit plane of the reference satellite, which means that the orbit eccentricity is zero. This method combines the Hill equation, the Kepler equation, and the geometrical inea^ing of orbit elements. It creates the redundancy condition to simplify the deducing process, utilizes multiple conditions to solve the orbit elements for the satellite formation, and obtains the analytical relationship of the orbit elements for the formation satellites with the formation parameters and the orbit elements of the reference satellite. Using these formulations, the orbit elements and formation parameters for the formation satellites can be solved for the given orbit elements of the reference satellite. The letter describes the proposed double-ellipse formation for both GMTI and InSAR, and the validity of the formation is demonstrated via simulation.