| CLIENTS & PROJECTS |
| ABOUT US |
|
Modeling Substation Magnetic Fields |
|
| Introduction
Modeling Approach
MF3D computes magnetic flux density using the
Biot-Savart Law with three-dimensional conductor models. The active
conductors in a substation are modeled through the development of a data
input file. The input data file also includes non-spatial parameters. These include
current magnitudes and phases for each conductor and the "profile(s)"
where the computed results are desired. Once the conductor and associated
current parameters are entered, the program is then executed to compute
the magnetic flux density at points of interest, which can include linear
and/or planar profiles.
MF3D is written in the ANSI standard C programming language. A menu-based version of the program runs on PC-compatible computers and requires the following:
When using MF3D with the Intergraph MicroStation TM PC CAD program on the same computer the following are required:
Computed Results
A wide variety of computed magnetic flux data is available to the user,
including:
|
|
There are
occasions when an assessment of substation magnetic fields is necessary,
as for example, when a new substation is proposed for construction or when
property development is anticipated near an existing substation facility.
For existing facilities, on-site magnetic field measurements are commonly
performed. However, the measurements reflect the magnetic fields at the
actual time of recording and do not necessarily result in possible maximum
or minimum conditions. In this situation the MF3D
modeling tool is an alternative approach to characterizing magnetic field
levels in and around an existing substation for different loading
conditions, without further need to set up and record actual data. In the
case of planned construction an on-site measurement of "before"
conditions can be compared to simulated "in-service" conditions
using the MF3D software tool.
The input file can be
constructed either by manual point-by-point data entry, or through a
MicroStationTM CAD file.
This helps to minimize the occurence of data entry errors that can lead to
incorrect results.