Distribution standards

The IEEE has approved two new standards – one involves the inspection of distribution lines and the other applies to determining fault location in AC transmission and distribution lines.

The IEEE has approved two new electrical transmission and distribution standards. One involves the inspection of distribution lines under construction, and the other applies to determining fault location in AC transmission and distribution lines. The IEEE also revised its guide for power-line carrier applications.

IEEE 1441, “Guide for Inspection of Overhead Transmission Line Construction”, is a new standard that offers a generalized approach to the inspection of overhead transmission lines during their construction. The guidelines it contains can be used alone or as part of a more extensive construction inspection program.

The other new standard, IEEE PC37.114, “Guide for Determining Fault Location on AC Transmission and Distribution Lines”, gives power system engineers and operators a way to compare various fault location methods, i.e., one-terminal and two-terminal impedance-based techniques and travelling wave techniques. It also looks at how to compile the needed data and how to decide when data and analysis are needed.

The revision of IEEE 643, “Guide for Power-Line Carrier Applications”, includes new material for users of carrier equipment on transmission lines. It gives procedures for calculating channel performance and considers intra-bundle conductor systems, insulated shield wire systems, various coupling components and frequency selection.

The IEEE has also reaffirmed the continued use of IEEE C37.113, “Guide for Protective Relay Applications to Transmission Lines”.