In this paper, one type of multi-tower CSP power plant’s instrument configuration and function for heliostats, solar thermal receivers, steam and water pipes is presented. Wireless instrument and wireless network configuration are developed based on the character of the instrument configuration. Each...

In order to facilitate monitor and manage various distributed generations in micro-grid, eliminate and discover malfunction of micro-grid, a micro-grid remote servo system based on The World Wide Web was designed. Discussing micro-grid’s remote monitoring system functional structure and database system....

With the energy crisis and environmental degradation increasing, people are increasingly concerned about the development of environmental protection and new energy technologies. According to the output characteristics of solar photovoltaic batteries, this paper is designed to take a DC chopper as the...

Instability is one of shortcomings for wind power. Along with the increasing of the number of wind farms, power instability also increased. The fluctuation of wind power will cause the variation of voltage in access point .The impact of this fluctuation to power grid is more and more bigger. To reduce...

In order to improve the penetration of wind energy in a grid, pumped storage system for smoothing the fluctuations of wind power has been presented. A stand-alone wind-pumped storage and hydropower system which can transform wind power into conventional hydropower integrating to the grid can maximize...

The purpose of this paper is to present two novel methods of improving low voltage ride-through (LVRT) capacity of doubly fed induction generator (DFIG) wind turbines. The first one, combining regular crowbar protection and three switches, enabled us not to consider the insulation of rotor inverter when...

This paper discussed a method of PLC controlling motor. Including the start and stop, forward and inversion of motor, Positive &negative switching in the process of Running. And realizing low speed, high speed, medium speed and switch operation, accurate control of step motor number. it was elaborated...

“GPRS wireless indicator diagram oil yield measurement collection and transmission system” is a high-tech product integrated with advanced computer technology, micro-signal sensing technology, EMC technology, data information processing technology, low power consumption technology and internet communication...

To obtain the maximum production of laccase from a novel deuteromycete fungus Myrothecium verrucaria NF-05, optimization of fermentation parameters was performed. Central composite design and response surface analysis revealed the optimum concentration of glucose, CuSO4 and gallic acid to be 26.47 g...

Micron-sized monodisperse copolymer microspheres were prepared by dispersion copolymerization of styrene (St) and methyl methacrylate (MMA) in ethanol/water medium using 2,2'-azobis (isobutyronitrile) (AIBN) and poly (vinyl pyrrolidone) (PVP) as initiator and steric stabilizer, respectively. The effect...

Detecting the working condition of a suck rod pumping system is an important research subject of oil extraction engineering. In the present paper, we claim a research using Extreme Learning Machine (ELM) to handle downhole dynamometer card auto recognition problems in a suck rod pumping system. First...

Microcomputer monitoring system for track circuit is used to monitor and record the operating state of the existing track circuit equipment. It also keeps a real time record of operating condition of equipment and provides accurate references for fault analysis. This paper introduces the design, debugging...

This essay put forward an analysis solution on the basis of the computer software-Matlab, from the output and input of the dynamic circuit system's mathematic establishment to the solution of the mathematic model of differential equation. It make use of the high quality numerical of calculation function,...

The strap-on linkage equipment on the current launch vehicle is more difficult to satisfy the load design requirement of the new generation high-thrust strap-on launch vehicle. According to the research of the new linkage equipment technology, this paper studies the force transmission path optimization...

Combined with the north project of Dalian international oil reserve, based on the monitoring of box gabion stone retaining wall, the earth pressure of box type reinforced gabion retaining wallwas studied. It can be further development of this technology, provides an example for the comprehensive application...

This paper tries to use the finite element analysis software ABAQUS to build the model and get images of rock stiffness degeneration, then get the displacement velocity and acceleration curves of drill and drill bit to express the longitudinal, transverse and torsional vibrations, as well as random access...

Electromagnetic actuators have been widely used in diesel engines, and its dynamic characteristics seriously affect the working performance of controlled objects. The research about the effect of structure parameters of electromagnetic actuators acting on its dynamic characteristics are introduced in...

This paper introduces a new type of horizontal wave flow power generatoreveloped by Shanghai Ocean University. Expound from its working principle, capturing mechanism and its key part of acquire energy. And it’s provided a profitable thinking for farther experiment.

In this paper, a new method for the speciation, separation and preconcentration of Cr(VI) and Cr(III) in water was developed. The procedure presented based on two forms of chromium show different adsorption capacities on the Porous nano-barium strontium titanate by reversed-phase suspension polymerization...

The grounding system is an important part for substation lightning protection. As the lightning rods of the large substation are in multi-point connection with the grounding grid through the frame, the distribution of ground potential along the grounding grid is different from that around the independent...