The continuing development of HVDC power transmission systems presents many problems related to evaluation of the reliability of power system assets [1]-[5]. In this context the identification of insulation defects plays a key role in preventing unexpected failures of electrical components. Partial discharge (PD) measurement is a useful approach to assessing the condition of HV power apparatus and cables. Such measurements are also widely employed for HVAC systems. The inception mechanisms of PD in AC systems are well-known, and measurements are usually performed following the IEC 60270 standard [6]. PD measurements under DC voltage present complexities related to the nature of the phenomenon and the supply conditions [7]. In AC systems phase-resolved-partial-discharge (PRPD) patterns allow assessment of the insulation condition, and provide information on the types of defect present [8]. Such analysis cannot be performed under DC voltage, since each discharge event cannot be related to a phase value. The interpretation of the acquired data therefore requires a different approach.

Romano, P., Presti, G., Imburgia, A., Candela, R. (2018). A new approach to partial discharge detection under DC voltage. IEEE ELECTRICAL INSULATION MAGAZINE, 34(4), 32-41 [10.1109/MEI.2018.8430041].

A new approach to partial discharge detection under DC voltage

Romano, Pietro
Writing – Review & Editing
;
Imburgia, Antonino
Writing – Review & Editing
;
2018-01-01

Abstract

The continuing development of HVDC power transmission systems presents many problems related to evaluation of the reliability of power system assets [1]-[5]. In this context the identification of insulation defects plays a key role in preventing unexpected failures of electrical components. Partial discharge (PD) measurement is a useful approach to assessing the condition of HV power apparatus and cables. Such measurements are also widely employed for HVAC systems. The inception mechanisms of PD in AC systems are well-known, and measurements are usually performed following the IEC 60270 standard [6]. PD measurements under DC voltage present complexities related to the nature of the phenomenon and the supply conditions [7]. In AC systems phase-resolved-partial-discharge (PRPD) patterns allow assessment of the insulation condition, and provide information on the types of defect present [8]. Such analysis cannot be performed under DC voltage, since each discharge event cannot be related to a phase value. The interpretation of the acquired data therefore requires a different approach.
2018
Settore ING-IND/31 - Elettrotecnica
Romano, P., Presti, G., Imburgia, A., Candela, R. (2018). A new approach to partial discharge detection under DC voltage. IEEE ELECTRICAL INSULATION MAGAZINE, 34(4), 32-41 [10.1109/MEI.2018.8430041].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/295756
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