Innovative 10 110 kV Compact Controlled Overhead Lines

Proceedings of CAD'19, 2019

Research background on overhead lines Actually, electricity is very important for the society because it is necessary for supporting various activity. Any disruption in the distribution lines may result in large economic loss [9]. Therefore, the reliability is an important quality factor in power distribution. Smart cities, and also smart homes,

— The aim of this paper is to present the results of the performance study of medium voltage overhead distribution lines against lightning discharges, in the way to define methodologies to reduce the system failures. The results are obtained within the partnership among the High Voltage Laboratory of the Federal University of Itajubá, AES Sul Utility Company and the University of Bologna. The resultant performance is presented in terms of expected faults for 100 km of line for a density of discharges to the ground (GDF) of 1 discharge/km²/year. Commentaries on the relative performance and comparisons of different construction configurations of overhead lines are presented.

AVAILABILITY: This bulletin can be accessed via the Internet at http://www.usda.gov/rus/electric/bulletins.htm PURPOSE: This guide publication is a reference containing fundamental engineering guidelines and basic recommendations on structural and electrical aspects of transmission line design, as well as explanations and illustrations. The many cross-references and examples should be of great benefit to engineers performing design work for RUS borrower transmission lines. The guide should be particularly helpful to relatively inexperienced engineers beginning their careers in transmission line design. CONTRIBUTORS: The following current and former members of the Transmission Subcommittee of the Transmission and Distribution (T&D) Engineering Committee of NRECA Ballard, Dominic, East Kentucky Power Coop., Winchester,

A novel pulsed power generator based on IGBT stacks is proposed for wide pulsed power applications because it can generate high voltage pulsed output without any step-up transformer or pulse forming network, it has advantages of fast rising time, easiness of pulse width variation, high repetition rate and rectangular pulse shapes. Proposed scheme consists of multiple power stages which were charged parallel from series resonant power inverter. Relying on the number of power stages it can boost maximum voltage up to 60 kV or higher with no limits of power stages. To minimize component for gate power supply, a simple and robust gate drive circuit which delivers gate power and gate signal simultaneously by way of one high voltage cable is proposed. For gating signal and power a full bridge inverter and pulse transformer generates on-off signals of IGBT gating with gate power simultaneously and it has very good characteristics of protection of IGBT switches over arcing condition. It can be used for various kinds of pulse power application such as plasma source ion implantation, sterilization, water and gas treatment which needs few kHz pulse repetition rate with few to ten of microseconds pulse width.

2001

International Journal of Power Electronics and Drive Systems, 2022

Delivering electrical energy to remote areas is one of the essential things in our modern world. Choosing the optimal route is one of the most critical factors contributing to reducing the power transmission system's cost. Other influencing factors such as the optimum alloy of the conductor wires are difficult to change, so only the aforementioned factor was adopted. In this paper, the optimized potential field algorithm is employed to determine the sub-optimum path that the transmission line should be installed. The best line for the towers is not necessarily the shortest or the cheapest one. Sometimes the best locations for the towers of the transmission lines coming according to the safety regards. It can be said that the best trajectory is a combination of several factors, including the length of the track in addition to other influencing factors depending on the work environment.

8th Power Plant and Power System Control Symposium, 2012

This paper investigates different approaches to improve the power transfer capability (PTC) of transmission lines. Study was performed on the Eastern Gold Fields (EGF) area of the Western Power network in Western Australia where power transfer to this area is currently enhanced using four saturable reactor types static var Compensators (SR SVCs) installed in this region. These SR SVCs have reached to the end of operational life and they are scheduled for replacement by different dynamic reactive power devices such as Static Synchronous Compensators (STATCOMs) or Thyristor Controlled SVCs (TSVCs). Another proposed option to enhance the PTC to this area is by upgrading the 220 kV transmission line to 275 kV transmission line and / or using series capacitor compensation. This paper introduces technical and economical study for the aforementioned options and suggests a reliable and cost effective approach to improve the PTC to EGF area.

AVAILABILITY: This bulletin can be accessed via the Internet at http://www.usda.gov/rus/electric/bulletins.htm PURPOSE: This guide publication is a reference containing fundamental engineering guidelines and basic recommendations on structural and electrical aspects of transmission line design, as well as explanations and illustrations. The many cross-references and examples should be of great benefit to engineers performing design work for RUS borrower transmission lines. The guide should be particularly helpful to relatively inexperienced engineers beginning their careers in transmission line design. CONTRIBUTORS: The following current and former members of the Transmission Subcommittee of the Transmission and Distribution (T&D) Engineering Committee of NRECA Ballard, Dominic, East Kentucky Power Coop., Winchester,

European Transactions on Electrical Power, 2008

The design of transmission lines is often the key issue for the existence or absence of failures caused by lightning. Detailed engineering studies are usually performed by electric power utilities for the design of new transmission lines. However, there are also cases where the design is based simply on tradition or on utilities' standardization policy. The paper presents a cost related method for the optimum design of overhead high voltage transmission lines, which intends to reduce or even eliminate the lightning failures. Lightning failures' cost is related to design parameters' cost in order to calculate the optimum and most economic design parameter values. In order to validate the effectiveness of the proposed method, the method is applied on several operating Hellenic transmission lines of 150 and 400 kV, respectively, carefully selected among others, due to their high failure rates during lightning thunderstorms. Special attention has been paid on open loop lines, where a possible failure in them could bring the system out of service causing significant problems. The proposed parameters that occurred by the design method and which reduce the failure rates caused by lightning, are compared with the operating transmission lines' existing design parameters showing the usefulness of the method, which can be proved a valuable tool for the studies of electric power systems designers.

Energy, 2004

This article compares the overall lifecycle costs of Overhead Transmission Lines (OTL) and Underground Transmission Insulated cables (UTC) of 220 KV. In this article present value of periodical maintenance, loss of energy and dismantling cost of transmission lines is taken into account while calculation of lifecycle cost. Also in this article social cost arises from overhead transmission line and underground cable is taken in account while compare the entire service life of the transmission line. The entire procedure is shown by carrying out on average market value of cable and overhead lines. All operating costs over the life of the asset can be converted into an equivalent capital sum at the start of the project life and so these costs can be added to the capital cost of the investment. In addition to the economic costs, this article also quantifies the environmental costs of a transmission facility, in terms of the burden on the built/developed/occupied land or territory. The presence of an electro-magnetic field exceeding the value set by national Laws (or Rules or Standards) may create a quarantined area of land unavailable for human activities or development. Nonetheless, the method may be widely applied to any type of OTL UTC comparison.

IOP Conference Series: Materials Science and Engineering, 2021

This paper gives an elaborate insight into the Power Line Carrier (PLC) communication technology in the power system. It explores the various characteristics, properties, and advancement of the power line carrier system and individual analysis of its components. These components, however, are in concerning power line carrier communications over high voltage lines majorly used in transmission stations. Power Line Carrier (PLC) components, including wave traps, coupling capacitors, line matching units, were highlighted. The paper discussed the operation principle of the Power Line Carrier (PLC) system together with their functionalities and how it makes transmission of information and power possible. It gives us the step by step functionalities of the different parts and how they make the information dispersion possible. A communication strategy was deployed for the effective transmission of data and information over the power line channel. Challenges were considered, solutions, and f...