Geomagnetic Disturbance Integrated Tool
The impact of geomagnetic disturbances (GMDs) continues to be a significant concern for the North American bulk power system. To assess potential system vulnerabilities and evaluate appropriate mitigation measures, several planning studies must be performed in conjunction, as outlined in the NERC Reliability GMD Vulnerability Assessment Requirement (TPL-007). Presently, these studies are conducted across multiple software platforms that require multiple databases and user intervention. This tool integrates the TPL-007 studies across these multiple platforms, enhancing the accuracy and efficiency of the GMD vulnerability assessment.
Software Package
The Geomagnetic Disturbance Integrated Tool is a Python package that integrates multiple software platforms necessary for conducting GMD vulnerability assessments.
Features
| E-field modeling Detailed line models and transformer saturation magnetic circuits | PowerWorld integration Power system stability and power flow models |
| Thermal analysis Modeling of transformer heating during geomagnetic disturbance events | Harmonic analysis Large-scale modeling of harmonics injection and propagation |
Users
![]() | Grid Operators Improved assessment and mitigation of the effects of geomagnetic disturbances on the electric grid. |
![]() | Utilities Confidence that conducted vulnerability assessments are correlated to improved geomagnetically induced currents specified by reference peak geoelectric field amplitudes and waveforms. |
![]() | Researchers Platform by which to match measured geomagnetic impacts to modeled conditions and continuously improved calculated values for future assessments. |
![]() | Public Stakeholders Assurance that the planned performance of the bulk power system during geomagnetic disturbance events prevents instability, uncontrolled separation, or cascading failures. |
Resources
- Webinars
- Whitepapers
- Instruction Manual



