this paper proposes an optimal transmission expansion planning (tep) which is based on determining share of each line in merchandizing surplus (ms) of system, determining by independent system operator (iso). the more share of a line in ms of system denotes the priority of a line for expansion. the procedure of determining ms of each line in a power system is based on determining the ms share o...

In this paper, a model for hybrid transmission expansion planning (TEP) and reactive power planning (RPP) considering demand response (DR) model has been presented. In this study RPP considered by TEP for its effects on lines capacity and reduction of system expansion costs. On the other hand the expansion of the transmission system is an important subject, especially dealing with the new i...

This paper discusses a study of the impacts of ambient temperature gradients along electric power transmission lines on power transfer capability limits. This investigation is performed through the use of novel multi-segment, non-uniform, temperature-dependent line models, which are used to capture the non-uniformity of line parameters caused by ambient temperature variations. For demonstration...

Currently, there is a need to plan and analyze the electric power transmission system in greater detail and over larger geographic areas. Existing models approach the problem from different perspectives. Each model addresses different aspects of and has different approximations to the optimal planning process. This paper presents a new modeling approach for inter-regional planning and investmen...

In the deregulated power systems, transmission congestion is one of the significant and main problems of the electrical networks which can cause incremental cost in the energy. This problem has resulted to new challenging issues in different parts of power systems which there was not in the traditional systems or at least had very little importance. Transmission congestion happens when the maxi...

Flexible AC Transmission Systems (FACTS) controllers with its ability to directly control the power flow can offer great opportunities in modern power system, allowing better and safer operation of transmission network. In this paper, in order to find type, size and location of FACTS devices in a power system a Dedicated Improved Particle Swarm Optimization (DIPSO) algorithm is developed for de...

This paper presents some simulations of the proposed California power exchange, or pool, as it might interact with the regional market in the Western U.S. Pooling will increase interdependence with the regional market. We study this using a multi area chronological production simulation model. We find that overall operating economies resulting from pooling are small. Physical changes in the dis...