Overhead Transmission lines and Peymabargh experience

Overhead Transmission lines and Peymabargh experience

One of the most important topics for Peymabargh Company in the field of power transmission lines is the issue of air power lines, which we will discuss in more detail in this article. Undoubtedly, the electricity industry is one of the main industries in the world.

The other depends on its existence. In the meantime, the issue of electricity transmission to consumer areas and how it is implemented is doubly important. Therefore, power transmission lines are one of the most important components of power supply networks that are responsible for delivering electricity generate in power plants. Power transmission lines are divided into two categories:

overhead Transmission Lines and land, each of which has its own unique characteristics and applications.

In this article, we will deal with air transmission lines and its advantages and disadvantages and examples of projects of Peymabargh company in this field

Overhead Power Transmission lines

In our country, most power transmission lines (more than 90%) are aerial.

In this method, a set of poles, masts and power cables are used to transmit power.

The construction of these lines is much less expensive than underground lines and can be easily installed and branched, and can be used easily at very long distances. Also, in such lines, air flow plays the role of insulation and If there is a breakdown or problem, they are easily accessible and repairable.

Therefore, the combination of these cases and benefits makes them a more acceptable option in power transmission.

Metals such as aluminum and to some extent copper are used in overhead power transmission lines.

The reason for using more aluminum is the cheapness and lightness of this alloy and its high tolerance to high temperatures.

Of course, to increase mechanical strength and electrical conductivity, steel filaments are also used in aluminum conductors of overhead cables.

Copper cables are used in more limited cases such as medium and low voltage transmission lines.

Aerial lines because of the special shape of the masts, which usually do not have an attractive image in terms of architecture, and dangers such as lightning and storms, and the possibility of collisions and electric shocks of birds and fires due to damage to route cables and most importantly privacy Urban are not a good option for cities and residential areas.

There is also a high probability of power outages on these lines.

Overhead transmission lines with high reactivity are good options for low load densities.

 

Types of transmission lines based on voltage level

The types of transmission lines are also divided into several categories based on the voltage level:

1. Low voltage lines: For voltages below 1000 volts, which are usually used to transfer energy to home and small commercial consumers.
2. Medium voltage lines (distribution): For voltages between 1 and 33 kV for power distribution in urban or rural areas.
3. They are used. High voltage lines (above distribution): For voltages between 33 to 132 kV used for intermediate transmission lines.
4. Very high voltage lines (transmission): For voltages between 132 to 800 kV used in transmission lines Long used.

Peymabargh Company’s projects of aerial power transmission lines’ setting up

Peymabargh Company, with nearly 30 years of experience, has launched many projects in the field of design and implementation of power transmission lines, which include transmission lines with voltage of 63 and 132 kV, 230 kV and 400 kV.

Some of the projects related to the construction of airlines are as follows:

Completed 400 kV transmission lines:

Projects such as construction of foundation and wiring of 400 kV line Sahand-Urmia, construction of foundation of 400 kV line of Rudshour power plant,

Complete construction of 400 kV line Jalal – Neka – Ahavan, construction of foundation of 400 kV Firoozkooh line, wiring of 400 kV line Bafgh – Tabas,

Wiring of 400 kV line Mashhad – Sarakhs, wiring of 400 kV line Sabzevar-Shahroud, installation of towers of 400 kV line of Wardavard Valley School,

Construction of 63/400 kV Zobahan line – Tiran and…

Among the valuable experiences of Peymabargh Company in the field of design and construction of 400 kV aerial transmission lines have been.

Completed 230 kV transmission lines:

Items such as the complete construction of the 230 kV line of Lavarak hydroelectric power plant, the complete construction of the 230 kV line of Qala Hassan Khan,

Complete construction of 230 kV line Sarpol-e Zahab-Khosravi, complete construction of 230 kordis line, construction of 230 kV Ilam-Seymareh line foundation,

Construction of the foundation of the 230 kV line of Cheshmeh Sefid – Oramanat and

Among the EPC projects in the field of 230 kV overhead transmission lines.

Completed 63 and 132 kV transmission lines:

Projects such as the complete construction of the 63 kV Shahriyar line, the complete construction of the 63 kV Islamshahr-Chahardangeh line,

Complete construction of line 63 of Varamin, complete construction of line 63 kV of Farkashhar, complete construction of line 63 kV of cement mortar,

Complete construction of 63 kV Parandak line of Shams Abad industrial city, complete construction of 63 kV Takestan-Nekouyeh line,

Towing and wiring of 63 kV line Qom 1- Qom 2

Also among the achievements of this complex are the implementation of 63 and 132 kV aerial transmission lines