A New Method for Determining the Connection Resistance of the Compression Connector in Cable Joint

Abstract

The compression connector of a cable joint is one of the major components causing joint overheating. This paper proposed a new model to determine the connection resistance of the compression connector. It innovatively integrated electrical contacts model analysis (ECMA) with finite element analysis (FEA) in the modeling. The compacted stranded structure of the cable conductor was taken into account in the proposed model. The streamline distortion effect on the connection resistance was also established. To verify the applicability of the proposed model, the connection resistances of five compression connectors with different cross sections were measured. The modeling results and measurement results were in close agreement with each other.

Yüksek Gerilim Kabloları için Güvenilir Mekanik Konektör Tasarımı ve Direnç Kontrol Analizi

“…Uygun basınçta bile konektörden itibaren uçlar deforme olabilmekte ve daha büyük bir temas ve iletken alan oluşabilmektedir [16]. Ayrıca farklı iletkenlerin ve/veya konektörlerin eşit olmayan genişlemeleri nedeniyle, iletken ve konektör arasında boşluklar yeniden oluşabilmektedir [17]. Bağlantı hava geçirmez değilse, bu boşluklar oksitlerin oluşması için bir yer sağlamış olur [18].…”

Analysis of Cable Screen Currents for Diagnostics Purposes

“…It is, however, noted that there is no international standard regarding cable screen connections. Literature presents general information about contact resistance, e.g., about contact resistance of electromagnetic relays [9,10], but information about cable screen resistance is limited to a few publications, e.g., [11]. Problems with cable screen connection exist due to a lack of standards, bad design, non-clear installation procedures, unskilled personnel, and a lack of information about the installation of power cables.…”

Thermal Effects of Ground Faults on MV Joints and Cables

“…References [8,9] mainly focused on the assessment of the influence of CR on cable joint temperature: by using a simplified joint model, a finite element method is presented, showing that CR, in the case of low-quality joints, causes higher temperatures inside the joint with respect to the cable, of about 5 K. In these works, however, only load currents (i.e., current values lower than the cable ampacity) were considered. Moreover, due to the recognized role of CR with respect to cable heating, many papers proposed new methods and models to assess CR in cable joints [10][11][12].…”