An alternative approach for touch and step voltages measurement in high-voltage substations
| Autor: | Nebojsa Raicevic, Vojin Kostić |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Coupling
Engineering HV substation business.industry Ground 020209 energy Overhead (engineering) Grounding system Electrical engineering Touch and step voltages Energy Engineering and Power Technology High voltage 02 engineering and technology Earthing system Interference (wave propagation) Frequency Shift Method Test Current Reversal Method 0202 electrical engineering electronic engineering information engineering Electronic engineering Electrical and Electronic Engineering business Interference Electrical impedance Voltage |
| Popis: | This paper presents the study of a measurement technique for touch and step voltages. In essence, we elaborate an approach which is very similar to the measurement of the grounding system impedance. In addition, the main focus is on the measurements at energized substation where different types of coupling between the test leads, grounding grids, sheats of underground cables and overhead ground wires affect the precise measurement. In order to avoid the measurement difficulties, we use low magnitude variable frequency AC test current (so called Frequency Shift Method – FSM). We compare FSM measurement results with the corresponding results obtained by well-knownTest Current Reversal Method.The field tests were conducted in two quite different substations. Experimental results demonstrate the validity and usability of this approach. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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