External hazards and the stability of the electrical power system in the Czech Republic

Demjancukova, Katerina; Piterka, Lubos; Sedlák, J.

doi:10.1109/epe.2015.7161106

Cited by 1 publication

(3 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The equivalent effect of the geoelectric field is shown in Figure 2. In Figure 2, R 1 and R 2 are DC resistances of line 1 and line 2 respectively; R 01 , R 02 and R 03 are DC resistances of substation 1, 2 and 3 respectively; I GIC12 and I GIC23 are GIC flowing through transmission lines 1-2 and 2-3; I GICi (i∈1,2) represent GIC flowing through substation; U i (i∈1,2) can be calculated according to formula (1). After equivalent, the GIC can be calculated by the DC model.…”

Section: ) Gic Model Of a Power Systemmentioning

confidence: 99%

“…According to the information of the Earth's electric field, the potential difference at both ends of the line can be approximately calculated by formula (1). Numerical simulations are carried out with MATLAB software.…”

Section: A Gic Calculationmentioning

confidence: 99%

“…Regarding the consequences of the strong solar storm, it is expected that the function of satellites, energetic sources, communication and navigation systems will be disrupted, secondary effects will occur in transport, safety and emergency systems, telecommunications and other wireless and electronic devices [1]. Geomagnetic disturbances (GMD) are stronger near terrestrial auroral zones and cannot be ignored due to their impacts on power system operational risk [2], [3].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Safety Evaluation Method for a Power System Influenced by a Geomagnetic Storm

Shu-ming

Liu

2020

IEEE Access

View full text Add to dashboard Cite

Geomagnetic storm disasters have a significant impact on the safe and stable operation of power systems. Serious geomagnetic storm disasters can lead to cascading accidents in power systems, up to and including voltage collapse accidents. Therefore, it is necessary to analyze and evaluate the operational risks of power systems under magnetic storms. Based on the mechanisms of the cascading failures caused by geomagnetic storms, the technical requirements for the power system safety assessment of geomagnetic storm disasters are analyzed, and an evaluation method is proposed. The key problems and evaluation systems to be solved are also discussed in this paper. A simulation method for the interactions between geomagnetically induced currents (GIC) and power systems is proposed, and a simulation is carried out based on MATLAB and the PowerWorld simulation software. The simulation results show that this method can accurately reflect the impact of faults on power systems and their cascading failures. The present research results provide a reference for further quantifying and preventing the power grid risks caused by magnetic storms. INDEX TERMS Geomagnetic disturbance (GMD), geomagnetically induced currents (GIC), risk assessment, hybrid model.

show abstract

Section: ) Gic Model Of a Power Systemmentioning

confidence: 99%

Section: A Gic Calculationmentioning

confidence: 99%