In line with the developing trend in the 90’s [1] and the requirements of the power dispatching center of BEPB(Bejing Electric Power Bureau),the open and distributed EMS/DMS SD-6000E is developed as the master statio...In line with the developing trend in the 90’s [1] and the requirements of the power dispatching center of BEPB(Bejing Electric Power Bureau),the open and distributed EMS/DMS SD-6000E is developed as the master station of BEPB project. Because the power system of BEPB, either the capacity of peak load, or the quantity of substations under monitoring and number of subsidiary control centers in hierarchical structure, is the largest district power system in China, in view of this situation and the significance of capital power supply, the comprehensive dispatch automation system with high reliability was planned, the integrated EMS/DMS SD6000E with multi-screen video graphic systems has been developed. This project was planned from December of 1992, started on April 30,1996, and will be completed by the end of 1998.This project is the largest EMS/DMS project in China up to now.The overview of this project, including the comprehensive requirement of EMS/DMS from BEPB, the hardware configuration design of EMS master station, the software design of SD-6000E, the integrated multi-screen video graphic systems with EMS/DMS is described in this paper. The implementation of this project is briefly described as well.展开更多
To investigate the characteristics of vaporized RP-3 kerosene combustion in a scramjet combustor enhanced by the micro vortex generator(MVG),a series of experiments are carried out based on the advanced combustion dia...To investigate the characteristics of vaporized RP-3 kerosene combustion in a scramjet combustor enhanced by the micro vortex generator(MVG),a series of experiments are carried out based on the advanced combustion diagnosis technique.The high-enthalpy incoming flow is accelerated to supersonic through a Mach 2.52 nozzle,the total pressure and temperature of which are 1.6 MPa and 1486 K,respectively.The effect of MVG on the ignition process,flame distribution,and combustor pressure along the bottom wall is well revealed,and the effects of the position and number of MVGs on stable combustion performance are analyzed.The results indicate that the development processes of the initial flame kernel with and without an MVG during ignition process show a similar behavior.The installation of an MVG can lift the shear layer,promote the penetration of flame deeper into the mainstream,and expand the area of the reactive region.Reducing the distance between the MVG and the injection position and increasing the number of MVGs are regarded as effective ways of improving the mixing degree of fuel and air with a resultant intensification of chemical reactions and flame luminescence.The effect of mixing and subsequent combustion is enhanced by shortening the distance between the MVG and the injection position.As the layout schemes of the MVG vary,the pressure distribution between the injection position and the leading edge of the cavity changes considerably,while that in the cavity remains almost constant.Increasing the number of MVGs is also beneficial for improving the premixed degree of fuel and incoming flow and results in more violent chemical reactions downstream of the cavity.展开更多
文摘In line with the developing trend in the 90’s [1] and the requirements of the power dispatching center of BEPB(Bejing Electric Power Bureau),the open and distributed EMS/DMS SD-6000E is developed as the master station of BEPB project. Because the power system of BEPB, either the capacity of peak load, or the quantity of substations under monitoring and number of subsidiary control centers in hierarchical structure, is the largest district power system in China, in view of this situation and the significance of capital power supply, the comprehensive dispatch automation system with high reliability was planned, the integrated EMS/DMS SD6000E with multi-screen video graphic systems has been developed. This project was planned from December of 1992, started on April 30,1996, and will be completed by the end of 1998.This project is the largest EMS/DMS project in China up to now.The overview of this project, including the comprehensive requirement of EMS/DMS from BEPB, the hardware configuration design of EMS master station, the software design of SD-6000E, the integrated multi-screen video graphic systems with EMS/DMS is described in this paper. The implementation of this project is briefly described as well.
基金supported by the National Natural Science Foundation of China(No.12002373)。
文摘To investigate the characteristics of vaporized RP-3 kerosene combustion in a scramjet combustor enhanced by the micro vortex generator(MVG),a series of experiments are carried out based on the advanced combustion diagnosis technique.The high-enthalpy incoming flow is accelerated to supersonic through a Mach 2.52 nozzle,the total pressure and temperature of which are 1.6 MPa and 1486 K,respectively.The effect of MVG on the ignition process,flame distribution,and combustor pressure along the bottom wall is well revealed,and the effects of the position and number of MVGs on stable combustion performance are analyzed.The results indicate that the development processes of the initial flame kernel with and without an MVG during ignition process show a similar behavior.The installation of an MVG can lift the shear layer,promote the penetration of flame deeper into the mainstream,and expand the area of the reactive region.Reducing the distance between the MVG and the injection position and increasing the number of MVGs are regarded as effective ways of improving the mixing degree of fuel and air with a resultant intensification of chemical reactions and flame luminescence.The effect of mixing and subsequent combustion is enhanced by shortening the distance between the MVG and the injection position.As the layout schemes of the MVG vary,the pressure distribution between the injection position and the leading edge of the cavity changes considerably,while that in the cavity remains almost constant.Increasing the number of MVGs is also beneficial for improving the premixed degree of fuel and incoming flow and results in more violent chemical reactions downstream of the cavity.
