Overhead Transmission Conductor Sag: A Novel Measurement Technique and the Relation of Sag to Real Time Circuit Ratings
Titel:
Overhead Transmission Conductor Sag: A Novel Measurement Technique and the Relation of Sag to Real Time Circuit Ratings
Auteur:
Mensah-Bonsu, C. Heydt, G. T.
Verschenen in:
Electric power components & systems
Paginering:
Jaargang 31 (2003) nr. 1 pagina's 61-69
Jaar:
2003-01
Inhoud:
This article deals with overhead transmission conductor sag. The design, construction, instrumentation, and testing of a differential global positioning satellite (DGPS) system-based instrument for the measurement of conductor sag is proposed. Inherent and intentional errors in GPS technologies are discussed, and the DGPS method is described for accuracy enhancement. A DGPS-based overhead conductor-sag measuring instrument has been designed, constructed, and subjected to selected laboratory bench and power substation testing. A method to measure directly the physical sag of overhead conductors is described. The main advantage of the concept is the real-time direct measurement of a parameter (i.e., conductor sag) needed for the operation of the transmission system without intermediate measurement of conductor tension, temperature, and ambient weather conditions.
Tijdschrift beschrijving