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I dont know anything about ETAPs capability in this area. If we were doing a lot of transmission line design on a full-time basis, I would look at PLS-CADD.
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#SAG TENSION LIMIT IN PLS CADD SOFTWARE#
It is an old program and does not integrate with CAD software at all. For the ground wire broken condition and maximum working tension shall be considered for the purpose of design of tower.The unbalanced pull due to broken. These limitations are based on the use of recognized methods for reducing the likelihood of fatigue failures by minimizing chafing and stress concentrations. We use SAG10 - mainly because the cost is lower than PLS-CADD. a) OPGW sags should be such that the tensions do not exceed the limits for open supply conductors, which are given in the latest edition of the National Electrical Safety Code (NESC) or appropriate national code (s) for the country where installed. It allows replacement of bad data with almost exact values. OPGW SAG AND TENSION LIMITS BASIC INFORMATION AND TUTORIALS. Moreover, to eliminate the bad data, sensitivity based bad data elimination approach is presented. The performance of the proposed estimator is validated on the sag and tension data obtained with simulations on PLS-CADD™.
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Though, designed assuming ideal leveled span configuration, it is found to work for actual operating conditions. The estimator uses the conductor temperature and tension at one end of the span as input. Using this, a reduced order, least-square based state estimator is proposed to estimate the sag in leveled span configuration. To reduce the number of sensors and identify their location a linear integer programming based optimal sensor placement approach is proposed while keeping the redundancy intact. This paper attempts to reduce the sensor requirement and estimate the sag in leveled span. The two options are a) Sag with catenary constant b) Sag with horizontal tension The catenary constant determines the shape of the catenary.
#SAG TENSION LIMIT IN PLS CADD MANUAL#
PMS requires sensors on every tower as a result, sensor and data transmission requirements are high. Manual Sagging Preference PLS-CADD allows the user to set a preference for specifying the tension when manually sagging each section of cable. But, due to the limitation of DMS to use ruling span method, PMS is preferred. To monitor sag, distributed (DMS) or point measurement systems (PMS) are used. However, remote locations of the conductor limit observability of sag. Mechanical sag of the overhead transmission line (OTL) is a critical parameter for power system operation.