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Research on overvoltage for XLPE cable in a modular multilevel converter HVDC transmission system

Research on overvoltage for XLPE cable in a modular multilevel converter HVDC transmission system
Research on overvoltage for XLPE cable in a modular multilevel converter HVDC transmission system
Due to the rapid development of the voltage-source converter (VSC), the demands for HVDC cables have increased significantly. Although more than ten VSC-HVDC projects are under construction and many more are in operations globally, the testing criteria for HVDC XLPE cables are mainly referenced to test guideline TB 496 recommended by CIGRE. Due to the large stray capacitance of the VSC-HVDC cables, the switching impulse overvoltage stress of the cables is the main electrical parameter concerned, a unified overvoltage factor of 2.1 p.u. being generally accepted. However, the switching impulse overvoltage stress of a VSC-HVDC cable system depends on not only the VSC topology but also the cable parameters and the volt-ampere characteristics of the dc cable surge arresters used. This paper studies the switching impulse overvoltage stresses for the dc cable system of a symmetrical monopole VSC-HVDC transmission system using the modular multilevel converter technology. The studies were performed according to the key technical parameters for a typical 1000-MW/320-kV VSC-HVDC transmission scheme, the XLPE dc cable links being assumed. The results show that a switching impulse overvoltage level of 2.3 p.u. should be applied during the type test of the overvoltage capability of the HVDC cables.
0885-8977
683-692
Wang, Haitian
7f867657-bb51-48a8-ad1a-98241c1d02b9
Cao, Junzheng
cf3a832d-7db0-48a0-a665-4b28ec9c138c
He, Zhiyuan
03f87a01-6590-4713-9b97-a8f1dddeb20f
Yang, Jie
c27f1a3b-2c51-489e-bd15-68abe2a40064
Han, Zhengyi
d81711f1-3f60-45fc-a4c8-30080cea91f9
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Wang, Haitian
7f867657-bb51-48a8-ad1a-98241c1d02b9
Cao, Junzheng
cf3a832d-7db0-48a0-a665-4b28ec9c138c
He, Zhiyuan
03f87a01-6590-4713-9b97-a8f1dddeb20f
Yang, Jie
c27f1a3b-2c51-489e-bd15-68abe2a40064
Han, Zhengyi
d81711f1-3f60-45fc-a4c8-30080cea91f9
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819

Wang, Haitian, Cao, Junzheng, He, Zhiyuan, Yang, Jie, Han, Zhengyi and Chen, George (2016) Research on overvoltage for XLPE cable in a modular multilevel converter HVDC transmission system. IEEE Transactions on Power Delivery, 31 (2), 683-692. (doi:10.1109/TPWRD.2015.2469595).

Record type: Article

Abstract

Due to the rapid development of the voltage-source converter (VSC), the demands for HVDC cables have increased significantly. Although more than ten VSC-HVDC projects are under construction and many more are in operations globally, the testing criteria for HVDC XLPE cables are mainly referenced to test guideline TB 496 recommended by CIGRE. Due to the large stray capacitance of the VSC-HVDC cables, the switching impulse overvoltage stress of the cables is the main electrical parameter concerned, a unified overvoltage factor of 2.1 p.u. being generally accepted. However, the switching impulse overvoltage stress of a VSC-HVDC cable system depends on not only the VSC topology but also the cable parameters and the volt-ampere characteristics of the dc cable surge arresters used. This paper studies the switching impulse overvoltage stresses for the dc cable system of a symmetrical monopole VSC-HVDC transmission system using the modular multilevel converter technology. The studies were performed according to the key technical parameters for a typical 1000-MW/320-kV VSC-HVDC transmission scheme, the XLPE dc cable links being assumed. The results show that a switching impulse overvoltage level of 2.3 p.u. should be applied during the type test of the overvoltage capability of the HVDC cables.

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Accepted/In Press date: 5 August 2015
e-pub ahead of print date: 28 September 2015
Published date: April 2016
Organisations: EEE

Identifiers

Local EPrints ID: 403006
URI: http://eprints.soton.ac.uk/id/eprint/403006
ISSN: 0885-8977
PURE UUID: 667a9dab-04da-45ab-878c-5daa8253606c

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Date deposited: 21 Nov 2016 16:16
Last modified: 16 Dec 2019 19:36

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Contributors

Author: Haitian Wang
Author: Junzheng Cao
Author: Zhiyuan He
Author: Jie Yang
Author: Zhengyi Han
Author: George Chen

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