Advanced Materials Research Vol. 852

Abstract: Recently, distributed generation (DG) has gained lots of attention due to a variety of benefits it can bring to the traditional power produce and distribution system. Identify the optimal location and size of DG in the distribution network is one of the crucial problems of DG integration, because a non-optimal planning might cause some adverse effects. In this paper, an optimization model with the consideration of minimizing energy losses is formulated first, and then an optimization methodology based on the Self-organizing Optimization Algorithm (SOA) is proposed. Finally, a case study is carried out to demonstrate the effectiveness of the proposed procedure.

Abstract: The power grid dispatching automation system is the nerve center of the strong smart grid, and its safe and stable operation is the strong guarantee of power supply. Power grid dispatching automation system must have high availability and reliability to ensure the uninterrupted operation of system. This paper analyzed the application status of present power grid dispatching automation system and proposed a method based on virtualization technology to realize high availability. It also provided the architecture design of system and the concrete realization method of high availability. With the comparison of new method and existing system, it could be found that new method not only has high availability and fast failure recovery function, but also could greatly increase resource utilization rate of physical machine cluster. Therefore, it can better satisfy the high availability request of power grid dispatching automation system.

Abstract: In the light of the characteristic of 300M ultra high strength steel and the feature of orthogonal turn-milling machining,an optimization model of orthogonal turn-millng machining parameters is consisted of maximum tool life,minimum surface roughness and maximum productivity. Based on multi-objective optimazation algorithm which is applied in coupling particle swarm optimization algorithm and gray relevancy analysis,it can achieve the purpose which is above mentioned. By introducing the chatter stability lobe diagram of aircraft landing gear with orthogonal turn-milling which is conformed with DMG turn-milling machine tool,it can optimize the parameters of the orthogonal turn-milling machining of the aircraft landing gear with high efficiency and good quality.

Abstract: This paper focuses on the frame optimization method for evaluation of the hole group position error principle, a detailed description of the hole group position error the importance of theory in practical applications, mathematical model established the assessment hole group position error, and the preparation for solving the hole group position error C language program, computer measurement data processing and optimization.The proposed method to solve the quantitative measurement and evaluation of the position error, should be widely applied.

Abstract: During circuit breaker risk condition assessment, the most important thing is to calculate the circuit breaker health index (HI). Aiming at the collected data for risk assessment is incomplete or it is not useful for the assessment, this paper analyzed the principle from of the health index calculation process, finding the various characteristics, which has an effect on the health, further more calculated the contribution to the health index, streamlining the data list for assessment. It has an important guiding significance for the future data collection.

Abstract: According to the building to its own characteristics, functions, and local circumstances existing cold source author believes that the heating and air conditioning system to determine which technology lies cold and heat source and system solutions optimize indoor hot and cold source program will directly greatly affect the project's initial investment and operation costs and system management service effectiveness.

Abstract: In this paper, the evacuation strategies and the update rules for limited visibility are proposed. The formulas on single exit, double exits and four exits for low pedestrian density are deduced and showed; and the time ratio is 1: 0.71: 0.56. The simulation results show that for normal visibility, the exit should be designed in the middle of wall, which results in the shortest evacuation time. So each exit is designed in the middle of wall. Moreover, in the different exit cases the evacuation can be simulated very well using the proposed model; and the time ratio on single exit, double exits and four exits is 1: 0.68: 0.57,which is close to the theory value 1: 0.71: 0.56. More, the evacuation evolution of different pedestrian number is studied; and the results show that if no jamming, the time ratios of different pedestrian number accord with the theory value 1: 0.71: 0.56 mainly, which proves the correctness of evacuation model and theory analysis.

Abstract: Lignocellulosic herbaceous plant is a high-quality kind of biomass resource. In China, large-scale cultivation of lignocellulosic herbaceous plant on marginal land is a crucial method to resolve sustainable supplement of biomass feedstock. In order to analyse its potential, this research conducted large-scale cultivation of four species of lignocellulosic herbaceous plant, switchgrass, silver reed, giant reed and hybrid pennisetum on a contaminated land in Beijing suburb. And a quantitative analysis of their biomass yields and ecological-economic values were performed in the sequential four growing seasons. With high annual biomass yields, 21.37 ton·hm^-2, 26.21 ton·hm^-2, 44.48 ton·hm^-2 and 57.61 ton·hm^-2, respectively, these four species of lignocellulosic herbaceous plant had enormous ecological values, including carbon fixation, oxygen release, sulfur dioxide absorption and dust retardment, and considerable economic values, according to standard coal conversion and cellulosic ethanol production. Of these four species, hybrid pennisetum is optimal in ecological value on contaminated land in the future, while giant reed in economic value.

Abstract: This study was to investigate the properties of the RDF produced from carbon ash of waste tire. Waste tire block was disposed of the pyrolysis in resource chemical plant to arise the carbon ash. After block technique, the RDF was made by a press at temperature and stress. In general, the set compression strength and heat value of the RDF ameliorate with the extrusion molding density for significant impact. The set ash, volatile content, Combustible content and heat value of the RDF ameliorate with the extrusion and drying temperature for significant impact. The set compression strength and volatile content and heat value of the RDF ameliorate with the adhesion QG15. In the economic and techniques conditions, the results of this study in accordance with appropriate operating conditions of the production and commercialization of marketing orientation.

Abstract: The present research was involved in forming condition of adhesive, Press Temperature, Density etc. In addition to ameliorate strength and thermal performance test of the RDF produced from Carbon ash after the waste tire pyrolysis in resource chemical plant. This study explored optimal condition of Carbon ash-RDF production based on relevant tests to enhance its strength and thermal performance for optimal utilization of Carbon ash-RDF. The results can serve as a reference to the Carbon ash-RDF production process design. The main component of the formula is an adhesive, chemically modified starch as adhesion to make the carbon ash uniformly mix with water. Besides finding a suitable formula, this study also conducted analysis on product property and developed technique to improve process and product property, as an important reference for future studies.