XGSLab™ Grounding Solution
EasyPower is partnering with the industry-leading grounding and EMI analysis expert company, SINT Ingegneria (website), which offers a software package to analyze and design grounding, lightning and electromagnetic interference problems by focusing on its powerful and yet affordable grounding analysis software packages, XGSLab. EasyPower is the exclusive representative of XGSLab software in the USA and Canada.
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XGSLab (Over and Under Ground System Laboratory) is one of the most powerful software packages for grounding system analysis, electromagnetic fields, interference and lightning analysis and the only software on the market that takes into account both EN and IEEE Standards.
XGSLab includes the modules:
- GSA (GROUNDING SYSTEM ANALYSIS) for regular application (applicable in most practical cases). Details
- GSA_FD (GROUNDING SYSTEM ANALYSIS in the FREQUENCY DOMAIN) for electromagnetic fields and interference evaluations for overhead and underground systems and for fault current distribution calculations. Details
- XGSA_FD (OVER AND UNDER GROUND SYSTEM ANALYSIS in the FREQUENCY DOMAIN) for electromagnetic fields and interference evaluations for overhead and underground systems and for lightning effects and fault current distribution calculations. Details
- XGSA_TD (OVER AND UNDERGROUND SYSTEM ANALYSIS in the TIME DOMAIN) for general applications with overhead and underground systems. Details
- NETS (NETWORK SOLVER) to solve full meshed multiconductors networks. Details
All modules are integrated in an “all-in-one” package and based on a hybrid calculation method (or “PEEC” method) which considers transmission line, circuit and electromagnetic theory combined into a single calculation model.
Hybrid methods combine the strengths of other methods and are well suited for engineering purposes because they allow the analysis of complex scenarios including external parameters such as voltages, currents and impedances. For these reasons, XGSLab can be considered a real laboratory.
Video - An Introduction to Grounding Calculations and Why They Are Necessary
This video is a recording of a webinar, given by Michael Antonishen, P.E. at TriAxis, a Division of DEA, and provides a basic introduction to grounding safety calculations (IEEE 80 step & touch) that are generally performed for medium and high voltage AC power stations or similar facilities. Basic grounding concepts and calculation inputs are introduced, and the need for this type of modeling and analysis is discussed.
See a full set of Product Feature Videos
The following table summarizes the main applications of the available models.
|Grounding (small systems)||Yes||Yes||Yes|
|Grounding (large systems)||No||Yes||Yes|
|Cathodic Protection Systems||No||Yes||Yes|
|Fault Current Distribution||No||No||Yes|
|Lightning effects for a single frequency||No||No||Yes|
XGSA_TD can be applied to analyze in the time domain, current and potential distribution on underground and overhead conductor networks energized by means current or voltage transients. It can calculate the consequent distributions of earth surface potentials and electric and magnetic fields.
GSA (Grounding System Analysis)
GSA is a widely utilized and recognized module for earth grid calculations and design including soil analysis.
- Can analyze the low frequency performance of grounding systems composed by many distinct electrodes of any shape into a uniform or double-layered soil model.
- Can import earth grid data from AutoCAD® files, delivering professional numerical and graphical output useful for investigation of GPR and leakage current, surface potential, touch and step voltage distributions.
GSA_FD (Grounding System Analysis in the Frequency Domain)
GSA_FD is a module for earth grid calculation and design in the frequency domain, including soil analysis and represents the state-of-the-art of grounding software.
- It is also useful for magnetic field and electromagnetic interference evaluations.
- It represents a new way to study large grounding systems. Experience shows that with large electrodes, the horizontal variation of the soil resistivity makes the use of sophisticated soil models (multilayer) that our competitors use inefficient. In these cases, the use of a more sophisticated electric model of the electrodes is preferable because the circuit parameters, as self and mutual impedances, can be known better than the soil resistivity value. In fact, in the frequency ranges we are interested in, these circuit parameters depend weakly on the soil properties.
- It considers self and mutual impedance effects, therefore overcoming the equipotential condition of the electrodes on which the standard GSA is based. This allows the analysis of electrodes whose size is comparable with the wavelength as better specified in the following. Competitor packages usually do not take into account the mutual impedance effects thus leading, in some particular conditions, to significant errors.
- It can be used in the frequency domain range from 0 to 1 MHz. Starting from 1 MHz calculations accuracy gradually decreases.
- It can analyze grounding systems composed by many distinct electrodes of any shape, size and kind of conductor (solid, hollow or stranded and coated or bare) into a uniform or double-layered soil model.
- Like GSA, GSA_FD can also import earth grid data from AutoCAD® files delivering professional numerical and graphical output useful for investigation of GPR and potential, current, leakage current, surface potential, touch, and step voltage distributions.
- It can also calculate magnetic fields due to grounding systems or cable, and electromagnetic interference (induced current and potential due to resistive, capacitive and inductive coupling) between grounding systems or cable and pipeline, or buried electrodes in general.
XGSA_FD (Over and Under Ground System Analysis in the Frequency Domain)
XGSA_FD is a completely new module that extends the GSA_FD application field to the aerial systems.
- XGSA_FD can also manage catenary conductors and bundle conductors and considers sources where potential and longitudinal currents are known and independent from other conditions. For these reasons XGSA_FD is one of the most powerful and multipurpose tools on the market for these kind of calculations.
- In addition to GSA_FD, XGSA_FD can calculate electromagnetic fields and interference between overhead systems. Between overhead and underground systems, it can calculate the effects of lightning and also fault current distribution.
- The XGSA_FD calculation model is directly derived from GSA_FD and its application limits can be considered the same.
XGSA_TD (Over and Under Ground System Analysis in the Time Domain)
XGSA_TD Is a completely new module that extends the XGSA_FD application field to the time domain.
- In this regard, XGSA_FD uses the so called “frequency domain approach.” As known, a transient can be considered as the superposition of many single-frequency waveforms calculated with the forward Fourier transform.
- Using the frequency domain model implemented in XGSA_FD, it is then possible calculate a response for each of these single frequency waveforms.
- The resulting time domain response can be obtained by applying the inverse Fourier transform to all these responses.
NETS (Network Solver)
NETS is a very flexible tool to solve full meshed multi-conductor and multi-phase networks taking into account all the neutral conductors paths as well as the earth path, and is based on Kirchhoff laws for multi-conductor and multi-phase systems.
This approach is general and overcomes the classic method of symmetrical components and can be used to represents power systems as multi-conductor networks enabling the consideration of asymmetrical and/or unbalanced systems also in presence of grounding circuits or circuits with a different phases number.
- The network components (generators, lines, cables, transformers, loads, switches, faults ..) are represented with multi-port cells and the connection between cells is obtained by means of multi-port buses.
- The grounding systems (substation grids, tower footings …) can be specified in an arbitrary way.
- NETS calculates lines, cables and transformers parameters starting on data normally available in commercial data sheet.
- NETS can be used to solve tranmission and distribution networks in steady state or fault conditions and to calculate potentials and currents or short circuit currents (three phase, phase to phase, phase to phase to earth, single phase to earth) with or without fault impedances.
- In particular, NETS can be used for the calculation of the fault current distribution in power networks and between power circuits and earth. An accurate knowledge of the fault current distribution is crucial in grounding, mitigation to reduce interference on communication circuits and pipelines, power systems protections calibration and coordination, neutral grounding resistor sizing and many others applications.
- NETS is then a very useful tool to calculate data input for others XGS modules (for instance the split factor or the current to earth) without unrealistic assumptions as for instance, magnitude of fault current known and unaffected by grounding impedances, impedances of overhead earth wires or tower footing resistances uniform along the line, or again, infinite length of lines …
Learn More about XGSLab Grounding
- XGSLab Grounding Analysis Assumptions
- XGSLab Grounding Background
- XGSLab Grounding Product Feature Videos