TY - GEN
T1 - An experimental investigation of the flashover behavior of outdoor cable terminations under lightning impulse application
AU - Koch, M.
AU - Hohloch, J.
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/7/2
Y1 - 2018/7/2
N2 - Designing cable terminations, today has two constraints: to be more compact requiring less space on the installation site and to reduce the amount of insulating fluids to limit the environmental impact. The trend towards higher operating voltage ranges of cable systems and the demand for maximum reliability over long service life lead to additional challenges regarding the design of new cable terminations. For the development of such new types of cable terminations, e.g. dry terminations, reliable design criteria are mandatory. This contribution shows the 50% flashover voltages of non-wetted standard oil-filled cable terminations stressed with standard lightning impulses (1.2/50 μs) for both polarities. All relevant parameters affecting the electric field distribution, such as the geometry of the insulator itself, the internal setup, and the insulation fluids, were systematically varied. The contribution compares the results of the experiments and discusses the influence of the relevant parameters. Besides the obvious dependence of the flashover voltages on the length of the hollow core insulator, the experiments reveal the distinct influences of the internal field grading parts and the insulation fluids on the positive and negative lightning flashover behavior, respectively, where there are differences for both cases. This knowledge is necessary for the design of new, ecofriendly, and reliable cable terminations.
AB - Designing cable terminations, today has two constraints: to be more compact requiring less space on the installation site and to reduce the amount of insulating fluids to limit the environmental impact. The trend towards higher operating voltage ranges of cable systems and the demand for maximum reliability over long service life lead to additional challenges regarding the design of new cable terminations. For the development of such new types of cable terminations, e.g. dry terminations, reliable design criteria are mandatory. This contribution shows the 50% flashover voltages of non-wetted standard oil-filled cable terminations stressed with standard lightning impulses (1.2/50 μs) for both polarities. All relevant parameters affecting the electric field distribution, such as the geometry of the insulator itself, the internal setup, and the insulation fluids, were systematically varied. The contribution compares the results of the experiments and discusses the influence of the relevant parameters. Besides the obvious dependence of the flashover voltages on the length of the hollow core insulator, the experiments reveal the distinct influences of the internal field grading parts and the insulation fluids on the positive and negative lightning flashover behavior, respectively, where there are differences for both cases. This knowledge is necessary for the design of new, ecofriendly, and reliable cable terminations.
UR - http://www.scopus.com/inward/record.url?scp=85063102404&partnerID=8YFLogxK
U2 - 10.1109/ICHVE.2018.8642235
DO - 10.1109/ICHVE.2018.8642235
M3 - Conference contribution
AN - SCOPUS:85063102404
T3 - ICHVE 2018 - 2018 IEEE International Conference on High Voltage Engineering and Application
BT - ICHVE 2018 - 2018 IEEE International Conference on High Voltage Engineering and Application
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 IEEE International Conference on High Voltage Engineering and Application, ICHVE 2018
Y2 - 10 September 2018 through 13 September 2018
ER -