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Shunt reactor with auxiliary winding system can compensate line capacitive reactive power and provide power for switching station. There is large air gap in the iron core, thus the coupling relationship between shunt reactor winding and auxiliary winding is weak. According to the special structure of shunt reactor with auxiliary winding system, equivalent circuit of shunt reactor with auxiliary winding system is researched in this paper. Shunt reactor with auxiliary winding system inter-turn protection based on zero sequence differential current is proposed, on the basis of fixed relationship between shunt reactor winding zero sequence current and auxiliary winding zero sequence current when fault occurred outside the zone. The conclusion of prototype protection device dynamic simulation test shows that this protection principle is current protection without voltage information and voltage transformer, and protection setting doesn’t need manual calculation work, and has high sensitivity for slight inter-turn fault.

The effects of sintering parameters and microstructure features on magnetic properties of Fe-3 wt.% Si alloy prepared by metal injection molding (MIM) was investigated in this study. The sample with high density, the saturation induction (Bs) of 2.0 T, maximum permeability (μmax) of 25 mH/m, coercivity of 22.4 A/m was obtained at 1300 °C for 4 h in hydrogen atmosphere, and the properties of which are close to that of high silicon steel. The microstructure, impurities of C and O, distribution of grain boundary angles and magnetic domain of the sintered alloys were analyzed in correlation with the magnetic properties. It is found that a suitable large grain size of about 300 μm and large grain boundary angles distributed in the range of 30°–60° are beneficial to soft magnetic properties. Moreover, uniform and broad magnetic domains also play an important role in preparation of high performance soft magnetic materials.

A novel triple-mode resonator based on the half-mode substrate integrated waveguide (HMSIW) structure is proposed to design the ultra-wideband (UWB) filters. The UWB filter topology is given by analyzing the resonant frequencies of the three modes and the signs of the coupling between the three modes and the input/output ports. With the filter synthesis method, a triple-mode UWB filter with passband from 3.1-10.6 GHz is effectively realized with two transmission zeros at the upper stopband. To block the existing undesired narrowband radio signals in FCC UWB range, a notched band can be easily generated and controlled by a loaded stub-capacitor. For demonstration, an UWB filter with a tunable notched band from 3.7 to 7.7 GHz and compact size is designed and fabricated. Both simulated and measured results indicate that the proposed new filter has the properties of wide tuning range of the notched band and sharp roll off.

Dome A, the highest point on the Antarctic ice sheet at just over 4000 ma.s.l., is located near the centre of East Antarctica. Chinese National Antarctic Research Expeditions have studied ice-sheet dynamics and mass balance along a traverse route from Zhongshan station to Dome A during the austral summers from 1996/97 to 2004/05. Nineteen GPS sites were occupied on at least two occasions at approximately 50 km intervals. The purpose of the surveys was to provide accurate ice-dynamics data. A dual-frequency GPS receiver was used and each site was occupied for 1–12 hours. GPS data were processed using GAMIT/GLOBK software, and horizontal accuracies were within 0.1 m. Repeat GPS measurements provided ice velocities. The horizontal surface ice velocities increase from the summit of the ice sheet to the coast. In the Dome A area, the velocities are –1; in the plateau area, velocities range from 8 to 24 ma–1 and reach about 98.2 ma–1 at a site (LT980) near the coast. The flow directions are roughly perpendicular to the ice-sheet surface elevation contours, primarily toward the Lambert Glacier basin.

This study was designed to investigate the role of MCT1 in the development of cisplatin-resistant ovarian cancer and its possible relationship with Fas. We found the expression of MCT1 was obviously increased both in cisplatin-resistant ovarian cancer tissue and A2780/CP cells compared with sensitive ovarian cancer tissue and cell lines A2780. And in A2780 cells treated with Cisplatin, the expression of MCT1 increased in a concentration-dependent manner, MCT1 knockdown attenuates cisplatin-induced cell viability. In A2780 and A2780/CP cells transfected with MCT1 siRNA, the activation of several downstream targets of Fas, including FasL and FAP-1 were largely prevented, whereas the expression of Caspase-3 was increased, accompanying with increased abundance of Fas. Coimmunoprecipitation and immunofluorescence showed that there is interaction between endogenous MCT1 with Fas in vivo and in vitro. In vivo, depletion of MCT1 by shRNA reverses cisplatin-resistance and the expression of Fas. This study showed that down regulation of MCT1 promote the sensibility to Cisplatin in ovarian cancer cell line. And this effect appeared to be mediated via antagonizing the effect of Fas.

This paper presents the impact of distributed generator (DG) accessing to distribution network on protective relaying at home and abroad, according to the current situation of experimental research analysis the necessity of test method research. Set up electromagnetic transient model of three common distributed power photovoltaic (PV), doubly-fed induction generators (DFIG) and permanent magnet synchronous generator (PMSG) on PSCAD/EMTDC platform; Set up physical model of three common distributed power photovoltaic (PV), doubly-fed induction generators (DFIG) and permanent magnet synchronous generator (PMSG) in dynamic simulation laboratory. Comparing simulation results of distributed generators electromagnetic transient model and physical model under the same fault conditions and control strategy, verified the validity of the laboratory physical model. On the basis of the physical model, construct dynamic test system to test protective relaying for distributed generators access to distribution network, which can realize closed loop for relay protection device from every manufacturer. At the same time test results laid the foundation for the improvement of the existing distributed power relay protection device and put forward the new principle of relay protection.

Testing the protection equipment on dynamic simulation test systems is very valuable not only for finding software bugs and design deficiencies of protection but also for performance and characteristics understanding. To strictly test different kinds of protection relay, the test systems must been designed carefully by selecting the connection and parameters of the system. The test items are designed specially for every kind of protection. This paper introduces some special technical requirements in China, and important test items for different protection schemes. Several ideas and algorithms of some protections are also compared in this paper, such as power swing blocking methods in line protection, current transformer saturation countermeasures in transformer and busbar protection, inrush currents, blocking methods in transformer protection, current transformer single-phase open detection methods, etc. Several problems appeared in the test and the reason of these problems are described and analyzed in this paper.

Synthetic aperture radar interferometry (InSAR) has been used as an innovative technique for digital elevation model (DEM) and topographic map generation. In this paper, external DEMs are used for InSAR DEM generation to reduce the errors in data processing. The DEMs generated from repeat-pass InSAR are compared. For steep slopes and severe changes in topography, phase unwrapping quality can be improved by subtracting the phase calculated from an external DEM. It is affirmative that the absolute height accuracy of the InSAR DEM is improved by using external DEM. The data processing was undertaken without the use of ground control points and other manual operation.