Overhead power line design in market conditions

Abstract

This paper deals with the concept of the stochastic optimization methodology for power line designing, which allows optimizing transmission network planning. The paper presents a comparison of both methods applied for selecting the best line design alternative -the deterministic economic intervals method and the stochastic approach based method, taking into account market conditions. Both methods are utilized for designing overhead power lines, including the choice of main line parameters such as tower height, type and coordinates, conductor type and cross-section, line fittings, etc. Moreover, the use of High Temperature Low Sag conductors -a part of the advanced technology -was evaluated alongside the use of conductors of the traditional type. The optimization problem is formulated as minimization of the total annual costs. The proposed methodology is tested in the developed tool, which is realized in MATLAB software by using the Monte Carlo method, and in an overhead power line designing program -PLS-CADD. Two basic case studies for verifying the proposed power line planning solution are presented in the paper.

Economic analysis of aluminium conductor composite core and conventional aluminium conductor steel reinforced conductors in overhead ultra‐high voltage transmission lines

“…These methods do not consider the value of funds over time, and also ignore many factors that affect the cost of capital during the project's construction, operation, maintenance, and discard period. Deterministic (classical) methods neglect the fluctuations of energy prices; therefore, a stochastic method for power transmission design was proposed in [12]. The life cycle cost (LCC) model is now widely used in the power industry, for instance, in the economic analysis of underground cable installation [13,14] and 500-kV grid-connected systems [15,16].…”

“…Reference [21] pointed that the use of stranded carbon fibre cores could reduce the total investment of the project by 15%. Power transmission line loss is not only a technical index but also an economic index, [12] took the impact of line loss during operation into consideration and considered operating costs depending on conductor cross-section and maximum line transmitted power. The corona loss was calculated by the finite difference method (FDM) method [22].…”

Evaluation Study of Potential Use of Advanced Conductors in Transmission Line Projects

“…Studies devoted to the optimization problem of minimizing the capital costs of a TL with respect to the selection of the optimum cross-sectional area of the conductor applied deterministic [15,16] and stochastic methods. For instance, the proposed stochastic approach to selecting the conductor cross-section, which takes into account random variables such as the power line load, electricity price, and ambient temperature, was presented in References [17][18][19]; the method of selecting the conductor and tower configuration from an overall system point of view was considered in Reference [20]; and the methodology for selecting both bare wire conductors and ground wires, their spatial arrangement, and the topology of the tower for a project with compact overhead transmission lines with multiple circuits was presented in Reference [21].…”

Solving company cooperation tasks in the construction of power transmission lines

“…Over the recent years, transmission network planning has been strongly influenced by the electricity market conditions, the changes in the economic environment and the regulation models, climate and weather issues, integration and utilization of new technologies, random events, etc. [2].…”