A generic process simulation‐model for educational simulations and serious games

Simulation methods are widely used in railway planning and operation. However, at the moment there are no applicable solutions in the process simulation for a smooth transition among different infrastructure levels on the basis of a unified structure with consistent algorithm. In this paper, a multi-scale simulation model is designed with consideration of the level of detail of the investigated infrastructure model and the homogeneity of the processes running in the simulation model. A comprehensive and synthesized view of railway planning and operation is therefore obtained. Within the multi-scale simulation model, railway planning and operation processes can be simulated, evaluated and optimized consistently. KEY WORDS: railway planning, simulation, multi-scale, aggregation, discrete scaling, continuous scaling, homogenous process, inhomogeneous process

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The Influence of Measured Trajectory Based Model Parameters Correcting on Simulation Precision of Power System Dynamic Frequency

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.448-453.2545 ◽

2013 ◽

Vol 448-453 ◽

pp. 2545-2550

Author(s):

Gang Mu ◽

Ming Li ◽

Jun An ◽

Xing Wei Xu ◽

Shuai Shao

Keyword(s):

Numerical Simulation ◽

Simulation Model ◽

Process Simulation ◽

Northeast China ◽

Operation Mode ◽

Measured Data ◽

Model Parameters ◽

Conservative Operation ◽

Generator Frequency ◽

Dynamic Frequency

Although numerical simulation is an important method of researching dynamic frequency process, obvious deviations have been found between numerical simulation and the measured trajectory in many accidents. And the existing simulation model and parameters cannot describe the actual dynamic process of frequency accurately. Research was carried out on the influence of four parameters to the dynamic frequency process, which based on the WSCC system. The four parameters include the inertia constant of generator, generator frequency coefficient, dead band and turbine intermediate superheating coefficient. Northeast China power grid and measured data are used to verify the above research conclusion. Checking the dynamic frequency process simulation model and parameters can improve the accuracy of dynamic frequency process simulation on the base of the measured trajectory and the physical characteristics of the parameters. It can also give efficient foundation for the setting work of UFLS, overcoming the previous conservative operation mode and so on.

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Maintenance Process Simulation Model Considered Sharing Resource and its Application

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.189-193.2530 ◽

2011 ◽

Vol 189-193 ◽

pp. 2530-2534

Author(s):

Chang Zheng Qu ◽

Rui Liu ◽

Jian Rong Zhang ◽

Yue Dong

Keyword(s):

Quantitative Analysis ◽

Simulation Model ◽

Process Simulation ◽

Process Model ◽

Test Equipment ◽

Resource Usage ◽

Deployment Optimization ◽

Maintenance Process ◽

Maintenance Performance

To study the maintenance resources deployment optimization, the resource usage characteristic was analyzed and a maintenance process model was constructed considering multi-team sharing test equipment. Applying model, the quantitative analysis was made and the maintenance performance of different resources deployment was provided.

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Study on the Product CAPP-PPC Process Based on Productibility

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.668-669.1651 ◽

2014 ◽

Vol 668-669 ◽

pp. 1651-1654

Author(s):

Yan Hai Chen ◽

Hai Feng Li ◽

Jing Xu ◽

Fu Sheng Qiu ◽

Gong Dong Wang

Keyword(s):

Simulation Model ◽

Process Simulation ◽

Concurrent Process ◽

Complex Products ◽

Rational Planning ◽

Serial Process ◽

Simulation Results

In order to make a rational planning of CAPP-PPC process, the differences of product serial and concurrent CAPP-PPC process were studyed in this paper. Based on Witness, Three kinds of product serial and concurrent CAPP-PPC process simulation model were established for products with different complicated degrees. Simulation results show the time of concurrent process is much shorter than serial process, for complex products, especially obvious.

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