World Leader in Grounding / Earthing, Lightning and Electromagnetic Interference
transmissionrailwaysgisgridlight
Software Products
Complete Package

 

Classical Grounding

 

Extended Grounding

 

EMF Based Software

 

AC Interference Analysis

 

Line & Cable Parameter Calculation

 

Electrical Enviromental Impact Assesment

 

Lightning Shielding Analysis

 

Consulting

 

 

 

 

 

 

 

 

 

 

 

 

 

Leading-Edge Applied R&D Engineering Consulting Services

SES's advanced scientific and engineering R&D activities can be grouped into four broad categories. For regular engineering design and analysis, SES recommends that you contact consulting firms using SES' software package CDEGS or its components.

SES specializes in solving unusually complex problems not attempted previously and requiring the use of the most recent scientific advances in the field of grounding and electromagnetic interference.

Browse an outline of a typical grounding specification study.

Browse an outline of a typical interference study.

Some of the Projects completed by SES in the past 3 years.

1. High Voltage Industrial Grounding Analysis

Since today's higher system voltages and fault current levels require substantial and expensive grounding installations, SES's computer tools help customers increase their design efficiency while significantly reducing their expenditures.

For example, in 1986, Alberta Power Limited wanted to increase the capacity of one of its substations which was surrounded by buried pipelines. Fearing that a ground fault at the station or on the transmission line could damage the pipelines, the pipeline company refused to approve the expansion unless expensive mitigation matting was deployed around many pipeline sections.

Fortunately, SES demonstrated to the satisfaction of both parties that the projected expansion would actually result in a slight decrease in interference levels, thus eliminating the need for the proposed mitigation.

2. Electromagnetic and Conductive Interference Analysis

With the current trend towards minimizing the amount of land available to private and public utilities, installations such as powerlines, pipelines, railway tracks, communication lines and similar services are being forced to share relatively narrow tracts of land, thus increasing the need for mitigation systems.

Responding to this need, SES has developed a design which combines the functions of grounding, gradient control, and cathodic protection into a single mitigation system. SES's design is a safer and more economical alternative to the "cancellation wire" technique which transfers high pipeline potentials to the opposite side of the right-of-way, where hazardous potentials are least expected. Finally, SES has made important contributions to the concept of evaluating interference levels with respect to local earth rather than remote earth. This has resulted in a more precise reference point and greatly reduced mitigation requirements.

3. High Frequency and Transient Electromagnetic Field Analysis

SES's software can accurately compute the electric and magnetic fields caused by currents flowing in overhead and buried conductors, including house wiring and water pipes! This software can analyze:

Lightning and high current transient surges can cause significant equipment damage and induce lethal stress voltages. Recently SES helped Florida Power & Light successfully solve a capacitor transient discharge problem and assisted South Carolina Electric & Gas in solving a distribution line lightning problem.

4.Soil Structure Measurement & Interpolation Analysis

New soil resistivity measurement procedures developed by SES make it possible to obtain accurate data and achieve significant cost saving by diminishing the need to overdesign grounding and mitigation systems. These procedures provide: