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Photoperiod is an important factor to the inducing plants flowering. This paper presents the analysis in the photoperiodic reaction types approaches of plant flowering. It is pointed out that the photoperiod plays an concrete role in application of plant flowering. Meanwhile, other environment factors are needed to be considered. In order to make the effective development in agricultural planting...
The paper advocates a different view of routing protocols according to technology trends nowadays. A Link State Multi-Path routing protocol, LSMP, is thereby introduced. This new hop-count based multi-path routing protocol has novel failure recovery mechanism, which is simple and effective. Through analysis and simulation, our protocol shows much faster convergence and better traffic balancing than...
China high-speed railway's traction transformer has higher voltage level than the normal-speed railway and has different connection and load condition from power system transformers. Based on the special requirements of traction power supply system of high-speed railway, main protection, backup protection, protection dual configuration and other issues related to traction transformer are analyzed...
Firstly the paper introduces the characteristics of Electrical Fast Transient (EFT) and analyzes some maloperation cases of the current differential protection for transformer. Based on the characteristic of electrical fast transient burst, an anti-interference criterion is presented. Analysis of field record data and a large number of simulation show that the presented criterion can effectively improve...
Traction power supply system is an electrical power network used to receive power from three phase power transmission system and supply power for the train driving on the single-phase AC power system electric railway, mainly composed of the traction substation, traction network, partition substation, switch substation and other components. Based on analysis of the compositions of high-speed railway...
Because of sectioned power supply, there are a series of no-electricity neutral sections in every electrified railway. The way of a train running through neutral section is a special challenge for railway. A technology for multiple unit train directly running through neutral section with electric load and an automatic system based on this technology are introduced in this paper. With the use of this...
This paper presents a simple technique for distinguishing the transient faults and permanent faults on transmission lines. Based on signal wavelet singularity detection, the modulus maxima of the wavelet transform at singular points in the fault phase voltages under different earth resistances is simulated. A system design based on signal wavelet singularity detection and fault phase selector is proposed...
Considering the fact that transformer is void of reliability data, fault tree analysis (FTA) and Monte Carlo algorithm are combined in this paper to analyze the reliability of transformer. Fault trees are built. By using the fault tree, Mente carlo is applied to quantitatively analyze the model. Then the reliability index and cell importance parameter help to find out the weak link of the system....
Software testing is an important link of software quality guarantee, regarding to the embedded software testing that is much more compelxed, needing a clear stage development test model that better controlled. The article discussed the model that already existed, further excavates the parallelism between test stages, trys to proposes a improved V model, This model make the software testing pass through...
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