Gas Pipeline Simulation: Use of a Single System for All Simulations

2006 ◽  
Author(s):  
Heribert Scheerer ◽  
Stewart Midwinter
Keyword(s):  
Steady State ◽  
Real Time ◽  
Simulation Models ◽  
Leak Detection ◽  
Gas Pipeline ◽  
Simulation Tools ◽  
Cost Of Energy ◽  
Time Simulation ◽  
Long Time ◽  
Training Simulation

Simulation tools have been used for a long time in the gas pipeline industry to do things like system planning and training simulation, using both steady state and transient simulators. Companies have also tried using simulation models in real time environments, to do applications such as line pack management and leak detection, with less than great results. With the increased cost of energy, more importance has been placed on use of simulation to optimize the operation of gas pipelines. One of the biggest problems with using simulation in so many areas is that many different models from potentially different suppliers had to be used. This resulted in a high cost to implement and maintain several systems. This paper will show a simulation system that is capable of performing steady state and transient simulation, off-line and real time simulation, leak detection and optimization, all using a single modeling platform. Examples of field use of the system will show the benefits that can be realized.

Review of RT-LAB and Steps Involved for Implementation of a Simulink Model from MATLAB to REAL-TIME

2013 ◽  
Vol 14 (6) ◽  
pp. 641-658 ◽  
Author(s):  
Suresh Mikkili ◽  
Anup Kumar Panda
Keyword(s):  
Real Time ◽  
High Performance ◽  
Simulation Models ◽  
Specific Class ◽  
Real Time Simulation ◽  
Simulation Tools ◽  
Simulink Model ◽  
Computing Technologies ◽  
Time Simulation ◽  
Real Time Digital Simulator

Abstract In recent days, every researcher wants to develop his/her model in real-time. Simulation tools have been widely used for the design and improvement of electrical systems since the mid-twentieth century. The evolution of simulation tools has progressed in step with the evolution of computing technologies. Now a days, computing technologies have improved dramatically in performance and become widely available at a steadily decreasing cost. Consequently, simulation tools have also seen dramatic performance gains and steady cost decreases. Researchers and engineers now have access to affordable, high-performance simulation tools that were previously too cost prohibitive, except for the largest manufacturers and utilities.This article has introduced a specific class of digital simulator known as a real-time simulator by answering the questions “What is real-time simulation?” “Why is it needed” and “How it works”. The latest trend in real-time simulation consists of exporting simulation models to FPGA. In this article, the steps involved for implementation of a model from MATLAB to REAL-TIME are provided in detail. The detailed real-time results are presented to support the feasibility of real-time digital simulator.

Study on Heat Storage Change Characteristics of a Double Reheat Boiler During Load Cycling Processes

2019 ◽  
Author(s):  
Zhu Wang ◽  
Ming Liu ◽  
Yongliang Zhao ◽  
Daotong Chong ◽  
Junjie Yan
Keyword(s):  
Steady State ◽  
Real Time ◽  
Temperature Control ◽  
Power Plants ◽  
Heat Storage ◽  
Simulation Models ◽  
Working Medium ◽  
Load Cycling ◽  
Reheat Steam ◽  
The Difference

Abstract The stability of the live and reheat steam temperatures is of great significance for the efficient, flexible and safe operation of coal-fired power plants. The double reheat boilers are large inertia, non-linearity and high coupling. Therefore, the temperature controls of live and reheat steams are very difficult during load cycling processes. The heat storage in the double reheat boiler changes during load cycling process, which will affect the performances of temperature control. In this study, dynamic simulation models of an ultra-supercritical double reheat tower boiler and its temperature control models are developed based on the GSE software. These models are validated. Then, changes of the boiler system heat storage during different load cycling processes are studied. Results reveal that the metal heat storage is more than working medium ones at steady state load. However, the changing quantities of working medium heat storage are more than the metal ones between different loads. During load cycling processes, the changing tendencies of reheat steam temperatures, the difference of heat storage between real-time and steady state values (DHSBRS) and the difference of coal feeding rate between real-time and steady values (DCBRS) are similar. The fluctuations of reheat steam temperatures have a delay compared with DHSBRS ones, and the fluctuations of DHSBRS fluctuation have a delay compared with DCBRS ones. The delay time increases with the load cycling rates. The results are aimed at providing some guidance for the control system design of the double-reheat boiler system and the safe and flexible operation of power plants.

Research on Simulation Modeling of Flight Aircraft Air under the Condition of Turbulent Flow

2014 ◽  
Vol 684 ◽  
pp. 165-168
Author(s):  
Yong Zhou Jiang ◽  
Yong Ji Lu ◽  
Yan Ding ◽  
Xiao Yan Yu
Keyword(s):  
Real Time ◽  
Simulation Modeling ◽  
Flight Simulation ◽  
Flight Simulator ◽  
Aircraft Structure ◽  
Atmospheric Disturbance ◽  
Real Time Simulation ◽  
Time Simulation ◽  
Simulation Based ◽  
Long Time

The flight process often in turbulence. Atmospheric turbulence causes flight bump, long time will cause damage to the aircraft structure fatigue. This paper establishes a model for atmospheric disturbance, flight simulation. Based on the aircraft through all kinds of atmospheric disturbance is studied. The use of embedded database and real-time simulation platform, built a run, in the PC machine can be used for dynamic model for real-time simulation of flight simulator.

Dual Threshold Analysis and its Tuning Tool Development for Leak Detection

2014 ◽  
Author(s):  
Jianping Gao ◽  
Mike Chen
Keyword(s):  
Steady State ◽  
Real Time ◽  
Design Process ◽  
Detection System ◽  
Leak Detection ◽  
Tool Development ◽  
Operating Period ◽  
Data Set ◽  
Threshold Setting ◽  
Threshold Tuning

Dual threshold setting in CPM (Computational Pipeline Monitoring) systems is a concept to apply two kind of thresholds, namely steady state threshold and transient threshold setting to improve sensitivity during steady state operating period and reduce false alarm rate during transient operating period. Dual threshold implementation in CPM systems is not a trivial task since a real time pipeline may go through very complicated hydraulic scenarios. During design phase of dual threshold, the data set evaluated needs to cover on operational scenario long enough to represent the typical operation of the pipeline. The design process needs to include the design of transient/steady state switching, transient and steady state threshold, waiting time etc and tuning of those design parameter to achieve the optima. This calls for effective analysis to ensure its validity and a tuning tool development with user-friendly graphical user interface (GUI) to facilitate the tuning efforts from leak detection engineers. This paper details the process from dual threshold design and analysis to tuning tool development and application of the tool in real time CPM systems. At first, the concept of dual threshold and its design process being employed in CPM systems are reviewed; Secondly the paper discusses an analysis approach in testing and evaluation of dual threshold design in current CPM systems with identification of room for improvement. Next, the paper elaborates the design and development of a dual threshold tuning tool to simplify the process with intensive application of the tool during the threshold tuning of real time CPM systems to improve the detectability of the current leak detection system, finally concludes with some closing remarks.

scholarly journals Constructing a Virtual Environment for Multibody Simulation Software Using Photogrammetry

2020 ◽  
Vol 10 (12) ◽  
pp. 4079 ◽  
Author(s):  
Manouchehr Mohammadi ◽  
Roope Eskola ◽  
Aki Mikkola
Keyword(s):  
Simulation Model ◽  
Real Time ◽  
Three Dimensional ◽  
Simulation Models ◽  
Simulation Software ◽  
Working Environment ◽  
University Campus ◽  
Environment Model ◽  
Time Simulation ◽  
Planar Images

Real-time simulation models based on multibody system dynamics can replicate reality with high accuracy. As real-time models typically describe machines that interact with a complicated environment, it is important to have an accurate environment model in which the simulation model operates. Photogrammetry provides a set of tools that can be used to create a three-dimensional environment from planar images. A created environment and a multibody-based simulation model can be combined in a Unity environment. This paper introduces a procedure to generate an accurate spatial working environment based on an existing real environment. As a numerical example, a detailed environment model is created from a University campus area.

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