Transmission expansion planning with re-design has been recently proposed in the literature to improve on the classical transmission expansion planning by allowing to cut-off circuits while expanding the network. Although the reductions in the solution costs are significant, the resulting mixed-integer linear programming formulations are very difficult to solve exactly for large networks. In th...

Communication networks are becoming more essential for our daily lives and critically important for industry and governments. The intense growth in the backbone traffic implies an increment of the power demands of the transmission systems. This power usage might have a significant negative effect on the environment in general. In network planning there are existing planning models focused on Qo...

In recent years, with the development of network technology and emergence of global Internet business, new Internet applications has a trend of explosive growth. Internet alone is introducing millions of individuals to a new world of information and technology. The demand for increasing bandwidth (voice, video, and data traffic) continues to drive the demand for fiber optical networks. Developm...

When planning an SDH network, explicit structure, such as rings or a network hierarchy, is often imposed to allow for easier network protection and management. Decisions on node connectivity are also heavily dependent on available transmission capacity and network geography, as well as the demands placed on the SDH transport layer. The strictly imposed structure therefore makes it unlikely for ...

The cable and telephone industries have already begun constructing the information super highway. The network capacity planning for data services, however, cannot start until a realistic traffic model is developed based on actual traffic data. Since the future data services are perceived to resemble today's World Wide Web (WWW) browsers, we propose in this paper a traffic model for the access n...

Exeoutive Summary Modern computation tools, such as the Optimal Power Flow (OPF) and Automatic Contingency Analysis (ACA), reduce significantly the time required to develop reliable and economical transmission plans. The traditional use of multiple power flows for planning large power systems with complex interconnections is very labor intensive and time consuming and limits the number of optio...