In the first stage of the projection of power transmission lines, the best possible
route for the line is determined by making the necessary examinations on the field.
Necessary measurements are made with the help of experienced geomatic engineers and
topographers according to the characteristics of the line to be made along the
specified route and these measurements are transferred to virtual environment.
With the virtual data obtained after the surveys carried out on the field,
a basic profile is drawn by the geomatic engineers according to the characteristics
of the line. On the basic profile, the plan of the line is drawn according to the
sketch books kept by the topographers during the study.
Catenary curve patterns of the conductors are drawn on this plan-profile and transmission line pylons
are placed by our knowledgeable and experienced electrical engineers.
Detailed calculations of all these operations are made by our engineers.
Our company, apart from the survey and plan-profile services offered, also prepares the complete projects of the
power transmission lines, switchyards and power distribution systems and performs the approval procedures on your behalf
at the related institutions.
High Voltage Power Transmission Lines
The HV PTL projects are prepared by us including the drawings and documents listed
below in accordance with the "Elektrik Tesisleri Proje Yönetmeliği" which is the regulations for projects of the electrical
facilities published by local authorities and submitted to the related institutions. After that,
these projects are followed up by us until the approval of the projects.
Plan and Profile
It is drawn from the point that energy taken to the connection point,
with horizontaly 1/2000, verticaly 1/500 scales and with the
breaking points and the first and last pylons are marked by the flags, on the technical paper by us.
Route Plan
It is drawn by us on the topographic maps with 1/25000 scale including the coordinates
of the first and last pylons and breaking points.
Site Plan
If necessary, it is drawn by us using existing maps or topographic plans with
1/1000, 1/2000 or 1/5000 scales showing the connection points and cable routes.
Cable Laying Application Projects
In the case of the power transmission line is underground, it is drawn by us on the zoning plans or
cadastral maps, in the absence of both, on the plan to be drawn by topographic measurements,
with the scales of 1/1000 or 1/2000, including informations such as cable duct types,
cable characteristics, cable lengths and connection points.
Scaled Application Projects of Cable Ducts and Special Transitions
In underground power transmission lines, in accordance with Article 58 of the "Elektrik Kuvvetli Akım Tesisleri
Yönetmeliği" which is the regulations for electrical facilities with high current levels
published by local authorities, it is drawn by us with the cable characteristics,
number of circuits and cable laying orders.
Scaled Application and Section Projects of Materials to be Used
The scaled application projects and section details of the materials to be used
in underground transmission lines are being prepared by us.
Cable Partitioning, Crossing and Earting Application Projects
Application projects of cable joints, cable crossing points and earting system used
in underground transmission lines are being prepared by us.
Leg Sections Calculations for Pylons
If necessary, leg sections calculations for pylons are determined and prepared by us
as a result of measurements made in the field.
Pylon Types Table
It is prepared by us including pylon types, distances between pylons, distances of any pylons from starting point,
pylon ranges, pylon angles, crossings, conductor arrangements, insulator types and
pylon numbers and the necessary information about the pylons and their legs.
Switchyard Projects
The switchyard projects are prepared by us including the drawings and documents listed
below in accordance with the "Elektrik Tesisleri Proje Yönetmeliği" which is the regulations for projects of the electrical
facilities published by local authorities and submitted to the related institutions. After that,
these projects are followed up by us until the approval of the projects.
Electrical Single Line Diagram
It is are prepared by us in a way that shows the relevant connection points of the
facility, the primary equipment determined according to the short circuit calculations
and includes the power measuring and protection systems.
Primary Equipment List
It is prepared by us icluding used the switchgear devices,
device numbers and switchgear types within the electrical single line diagram
or separately.
General Site Plan
It is prepared by us in a suitable scale including the coordinates of substations and switchyards.
Switchyard Site Layout Plans
The layout plans of the switchyards are prepared by us.
Steel Construction, Switchgear Foundation, Transformer Foundation and Pylon Foundation Projects
They are prepared by us if type projects of switchyards published by local authorities are not used.
Cable Duct Projects
Application projects of underground power cables and ducts used in switchyard sites
are being prepared by us.
Earting and Internal Earting Projects
Earthing details and plans of switchyard areas are prepared by us.
GIS Hall Layout and Section Plans
In case the switchyard is gas insulated, it is prepared by us.
36kV Control Building Plans, Layout and Section Plans
In case of transformers in switchyards is HV/MV winding, the architectural design, sections and switchgear layout plans
of the 36kV control room are prepared by us.
Protection Projects
Lightning, fire protection projects and security system projects of switchyards
are being prepared by us.
Medium Voltage Power Transmission Lines
The MV PTL projects are prepared by us including the drawings and documents listed
below in accordance with the "Elektrik Tesisleri Proje Yönetmeliği" which is the regulations for projects of the electrical
facilities published by local authorities and submitted to the related institutions. After that,
these projects are followed up by us until the approval of the projects.
Facility Information Form
By specifying the purpose of use of the PTL, the name of the line,
types of conductors, number of circuits, length of the line, ice load area,
pylon and isolator types, based on regulations, specifications and other
relevant publications, including the year of bill of quantities,
including the description part of the project information about
the connection point and the route, the basic information that constitutes
the basis for the preparation of the project, and the information about
the project-specific calculations, if any,
and other Sites that need to be specified are prepared in detail by us.
Plan and Profile
It is drawn from the point that energy taken to the connection point,
with horizontaly 1/2000, verticaly 1/500 or 1/400 scales and with the
breaking points and the first and last pylons are marked by the flags, on the technical paper by us.
Route/Site Plans
Route plan is drawn by us on the topographic maps with 1/25000 scale including the coordinates
of the first and last pylons and breaking points.
However, in addition to the route plan for PTLs less than 1 km in length,
site plan is drawn by us using existing maps or topographic plans with
1/1000, 1/2000 or 1/5000 scales showing the connection points and cable routes.
Cable Laying Application Projects
In the case of the power transmission line is underground, it is drawn by us on the zoning plans or
cadastral maps, in the absence of both, on the plan to be drawn by topographic measurements,
with the scales of 1/1000 or 1/2000, including informations such as cable duct types,
cable characteristics, cable lengths and connection points.
Scaled Application Projects of Cable Ducts and Special Transitions
In underground power transmission lines, in accordance with Article 58 of the "Elektrik Kuvvetli Akım Tesisleri
Yönetmeliği" which is the regulations for electrical facilities with high current levels
published by local authorities, it is drawn by us with the cable characteristics,
number of circuits and cable laying orders.
Pylon ve Traverse Selection Table
It is prepared by us including pylon and traverse types, distances between pylons, distances of any pylons from starting point,
pylon ranges, pylon angles, crossings, conductor arrangements, insulator types and
pylon numbers and the necessary information about the pylons and their legs.
Primary and Final Sag Calculations of Conductors
It is prepared by us including the name of the line, informations such as ice load
zone, conductor characteristics, and shows maximum sag values every 5°
between the critical temperature of the ice load zone where the line is located.
Principle Single Line Diagram
It is prepared by us to show all the nodes and the loads from the main supplying center to the
connection point.
Voltage Drop, Power Loss and Over-Heating Calculations
It is calculated by us considering all the loads on the line from the main supplying center
where the line is energized to the connection point.
Isolator Oscillation Calculations
The list of the weight range-wind range correlation calculations of the isolators with the guides published on TEDAŞ
website, is prepared by us. For the pylons that are not included in these guidelines or used exclusively,
this correlation is also calculated with TEDAŞ Publication 2014/1 and presented within the project.
Short Circuit Calculations
In underground power transmission line projects, the equivalent impedance of
all circuit components up to the point where short circuit calculation is made
is calculated and short circuit calculation is prepared by us accordingly.
Static Calculations of Pylons, Oscillation Diagrams, Calculations of Distances Between Overhead Conductors
For the pylons whose usage ranges are missing in TEDAŞ publications or specially used pylons,
the calculations of the forces acting on the pylons, the oscillation diagrams of the conductors and
calculations of distances between overhead conductors is prepared by us.
Special Electrical Calculations of Conductors
Resistance, magnetic flux, inductance and reactance calculations for transmission lines that is not in TEDAŞ type projects
is calculated in order to use in voltage drop and power loss calculations by our electrical engineers specialized in
electromagnetic fields.
Bill of Quantity
It is prepared according to the regulations published by TEDAŞ.
List of Materials Used
The material list is prepared by us including informations such as types,
quantities and weights of the pylones used in the project,
types and numbers of suspension-tensioners and insulators, type,
length and weight of conductor, surge arresters, warning and hazard plates quantities.
MV/LV Distribution Systems and Distribution Centers Projects
MV/LV distribution systems and distribution centers projects are prepared by us including the drawings and documents listed
below in accordance with the "Elektrik Tesisleri Proje Yönetmeliği" which is the regulations for projects of the electrical
facilities published by local authorities and submitted to the related institutions. After that,
these projects are followed up by us until the approval of the projects.
Facility Information Form
It is prepared by us according to the scope of the project to be prepared, information about the existing and new network,
the reasons for the preparation of the new network project, the general and technical information that constitutes the
basis for the preparation of the project and introducing all aspects of the facility, the year of bill of quantity,
the regulations, specifications and other related publications and the project-specific calculations.
MV/LV Electrical Single Line Diagrams
HV single line diagrams are prepared by us including detailed single line circuit diagrams of cabin type and pole type transformers,
transformer types, numbers, names, powers, lines and cables with section information in meters or kilometers under cross
sections, devices kept open in normal operation, direction of line indicated by arrow, phase-phase primary equipment
characteristics of devices determined by short circuit calculations.
LV single line diagrams are prepared by us, including equipments determined by short circuit calculations,
measurement and protection systems, protection interlocks, measuring secondary circuits and cable cross section areas.
Primary Equipment List
It is prepared by us icluding used the switchgear devices,
device numbers and switchgear types within the electrical single line diagram
or separately.
Switchgear Layout Plan
It is drawn by us with 1/50, 1/75 or 1/100 scale, including placement plans of transformers, MV switchgears and LV distribution
panels.
Short Circuit Calculations
It is calculated by us and is a basis for the determination of MV and LV equipments used within the facilityç
MV Voltage Drop, Power Loss and Over-Heating Calculations
In accordance with the TEDAŞ Power Distribution Network Project Technical Specifications and other relevant
legislation published on TEDAŞ's website, we calculate the relative voltage drop and power loss by considering all the
loads on the MV network and make sure that the current carrying capacities of the conductors is suitable.
Transformer Power Calculations
In accordance with the TEDAŞ Power Distribution Network Project Technical Specifications and other relevant
legislation published on TEDAŞ's website, it is calculated by considering the total load and concurrency factor
on the transformer.
LV Voltage Drop, Power Loss and Over-Heating Calculations
In accordance with the TEDAŞ Power Distribution Network Project Technical Specifications and other relevant
legislation published on TEDAŞ's website, we calculate the relative voltage drop and power loss by considering all the
loads on the MV network and make sure that the current carrying capacities of the conductors is suitable.
AG Reactive Compensation Calculations
In accordance with the TEDAŞ Power Distribution Network Project Technical Specifications and other relevant
legislation published on TEDAŞ's website, it is calculated by us in order to reach the desired power factor
in the secondary circuit of the transformer, considering the demand on the transformer and harmonics.
