Analysis and mitigation of stray capacitance effects in resistive high-voltage dividers
| Autor: | Francesca Capelli, Manuel Moreno-Eguilaz, Jordi-Roger Riba |
|---|---|
| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Elèctrica, Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica, Universitat Politècnica de Catalunya. MCIA - Motion Control and Industrial Applications Research Group |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
stray capacitance
finite element analysis voltage divider high-voltage Finite element method Control and Optimization Materials science 020209 energy Elements finits Mètode dels Energy Engineering and Power Technology 02 engineering and technology Alta tensió Corrents elèctrics lcsh:Technology Capacitance Potenciòmetres law.invention Parasitic capacitance law 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Enginyeria elèctrica::Alta tensió [Àrees temàtiques de la UPC] Transformer High voltages Engineering (miscellaneous) Voltage dividers Resistive touchscreen lcsh:T Renewable Energy Sustainability and the Environment business.industry Stray capacitance 020208 electrical & electronic engineering Direct current Voltage divider Electrical engineering Finite element analysis High voltage High-voltage Stray currents Alternating current business Energy (miscellaneous) |
| Zdroj: | Recercat. Dipósit de la Recerca de Catalunya instname UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Energies, Vol 12, Iss 12, p 2278 (2019) Energies; Volume 12; Issue 12; Pages: 2278 |
| Popis: | This work analyzes the effects of the parasitic or stray distributed capacitance to ground in high-voltage environments and assesses the effectiveness of different corrective actions to minimize such effects. To this end, the stray capacitance of a 130 kV RMS high-voltage resistive divider is studied because it can severely influence the behavior of such devices when operating under alternating current or transient conditions. The stray capacitance is calculated by means of three-dimensional finite element analysis (FEA) simulations. Different laboratory experiments under direct current (DC) and alternating current (AC) supply are conducted to corroborate the theoretical findings, and different possibilities to mitigate stray capacitance effects are analyzed and discussed. The effects of the capacitance are important in applications, such as large electrical machines including transformers, motors, and generators or in high-voltage applications involving voltage dividers, conductors or insulator strings, among others. The paper also proves the usefulness of FEA simulations in predicting the stray capacitance, since they can deal with a wide range of configurations and allow determining the effectiveness of different corrective configurations. |
| Databáze: | OpenAIRE |
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