Customers and Connections

01

Power Transmission Experience

Transelec makes all of its knowledge and experience in the design, construction, operation and maintenance of power transmission facilities to its customers in order to guarantee service meeting the highest international standards, support the development of new initiatives from the very start and throughout operation, in order to act as an integral partner for transmission business development.

Transelec bases its efforts on operational excellence, innovation, human capital and knowledge.

2012

Maitencillo – Caserones transmission line

Freirina and Tierra Amarilla, Atacama Region.

This transmission line connects Minera Caserones, owned by Lumina Copper Chile, with the Central Interconnected System (SIC).

The power uptake point is the Transelec Maitencillo substation, where the 2×220 kV Maitencillo – Caserones power transmission system was built.

– 220 kV double circuit transmission line, nominal transmission capacity amounting to 160 MVA spanning 183.2 km.

– Power feed system by amplifying the Maitencillo substation using two SF6 gas encapsulated switch bays (GIS).

2013

Charrúa Autotransformer Bank.

Cabrero, Biobío Region.

Increased power transformation capacity provided by this project makes the service safer and boosts reserve capacity in the event of an eventual transformer fault or outage.

– 500/220/66 kV autotransformer, 750 MVA, with 4 units, one of which is on standby.

– Extension of three 500 kV busbars with space for a future sectioning bay for the main 500 kV busbars.

Interconnection with the 220 kV yard by means of a 220 kV underground cable with two conductors per phase and a reserve phase that has been fully implemented.

– Automatic reserve unit replacement system by means of motorized disconnectors at both ends of the ATR.

– Insulated control system with parallel operation of the existing transformers, intervening in the two control and protection systems for the 500 kV and 220 kV substation.

2015

Lo Aguirre Sectioning Substation, Stage I

Pudahuel, Metropolitan Region.

Commissioning required a new supply point for the charge center of the Central Interconnected System (SIC), besides being a direct injection alternative for the Cerro Navia substation and for reducing power flows for transmission lines connecting Polpaico and Alto Jahuel.

This substation also enables part of the flow going through the Alto Jahuel transformer to be transferred to the Metropolitan Region load center located at the Cerro Navia Substation and supply its demand.

– 220/500 kV power substation.

– 1.6 km tie line for connecting to the substation that sectioned the existing double circuit 220 kV Rapel – Cerro Navia transmission line.

– 0.5 km tie line connecting to the substation that sectioned the existing 500 kV Alto Jahuel-Polpaico transmission line.

2018

Third 500/220 kV Autotransformer Bank, Alto Jahuel

Buin, Metropolitan Region.

This project will expand power transformation capacity to the substation, thus improving service safety and incorporating reserve capacity in the event of an eventual transformer fault or outage.

Estimated for 2018

– 500/220 kV autotransformer bank, amounting to a total 750 MVA, plus one reserve unit.

– Main busbar and transfer bar upgrades for both yards.

2018

Entre Ríos Substation

Cabrero, Biobío Region

The project features construction of the Entre Ríos substation (originally known as Nueva Charrúa), the new 2×220 kV Entre Ríos – Charrúa transmission line, and sectioning of the 2×500 kV Charrúa – Ancoa 1 and 2 transmission lines.

This infrastructure will be a new 500 kV injection point for future sources of power generation and for controlling increasing short circuit levels at the existing Charrúa substation.

– New substation with 500kV and 220 kV power yards.

– 500 kV breaker-and-a-half power yard with space for the installation of 8 diagonals and a 220 kV breaker-and-a-half power yard with space for the installation of 9 diagonals.

– Three 500/220 kV autotransformer banks with respective backup units.

– 500 kV, 220 kV and tertiary auxiliary busbar.

– New 500/220 kV 750 MVA autotransformer with a tertiary winding, backup unit, auxiliary busbars, disconnect switches and respective 500 kV and 220 kV diagonals.

– New 2×220 kV transmission line between the Nueva Charrúa and Charrúa substations, with minimum capacity of 1,000 MVA per circuit at ambient temperature of 35°C, and 220 kV bays connected to two different busbar sections at Charrúa.

2019

New Lo Aguirre - Cerro Navia transmission line

Metropolitan Region, east sector.

Construction of this transmission line will increase electricity transfer capacity from the 500kV system at the Lo Aguirre substation to 220 kV at the Cerro Navia substation, thus providing enhanced capacity and safety.

– 2×220 kV transmission line between the Lo Aguirre and Cerro Navia substations. Nominal capacity amounting to 1,500 MVA.

– Approximately 12 km long, with an underground tunnel section spanning approximately 1.5 km.

– The project includes transmission line bays at the end of Lo Aguirre and Cerro Navia.

2021

2x500 kV Pichirropulli – Tineo Transmission Line

Los Lagos and Los Ríos Regions

This line will reinforce the power grid for Chile’s southern zone by increasing power transmission capacity with a view to the injection of future sources of energy from southern Chile for transmission to the central zone.

The transmission line will be entirely installed west of Highway 5 South, and 60% of the route will run parallel to an existing Transelec transmission line, which will prevent visual impact in a new zone.

– The transmission line will span approximately 145 kilometers, with 365 high voltage towers

– 500kV double circuit energized at 220 kV

– 4 AAC Verbena type conductors per phase, with 1500 MVA capacity per circuit at 35°C in the sunlight

2018
2021

Changos – Kapatur and Changos – Kimal transmission lines

Mejillones, Antofagasta Region

Construction of these lines completes part of the SING – SIC interconnection and will also increase transmission capacity between the Crucero – Encuentro knot and the National Interconnected System.

– 2×500 kV transmission line spanning approximately 140 km with capacity amounting to 1,500 MW between Los Changos and Kimal.

– 2 500/220 kV 750 MVA autotransformer Banks at the Nueva Crucero Encuentro Substation.

– 1 500/220 kV 750 MVA autotransformer bank at the Los Changos Substation.

– 2×220 kV transmission line spanning approximately 3 km with nominal capacity of 1,500 MW between Los Changos and Kapatur.

2012

Maitencillo – Caserones transmission line

Freirina and Tierra Amarilla, Atacama Region.

This transmission line connects Minera Caserones, owned by Lumina Copper Chile, with the Central Interconnected System (SIC).

The power uptake point is the Transelec Maitencillo substation, where the 2×220 kV Maitencillo – Caserones power transmission system was built.

– 220 kV double circuit transmission line, nominal transmission capacity amounting to 160 MVA spanning 183.2 km.

– Power feed system by amplifying the Maitencillo substation using two SF6 gas encapsulated switch bays (GIS).

2013

Charrúa Autotransformer Bank.

Cabrero, Biobío Region.

Increased power transformation capacity provided by this project makes the service safer and boosts reserve capacity in the event of an eventual transformer fault or outage.

– 500/220/66 kV autotransformer, 750 MVA, with 4 units, one of which is on standby.

– Extension of three 500 kV busbars with space for a future sectioning bay for the main 500 kV busbars.

Interconnection with the 220 kV yard by means of a 220 kV underground cable with two conductors per phase and a reserve phase that has been fully implemented.

– Automatic reserve unit replacement system by means of motorized disconnectors at both ends of the ATR.

– Insulated control system with parallel operation of the existing transformers, intervening in the two control and protection systems for the 500 kV and 220 kV substation.

2015

Lo Aguirre Sectioning Substation, Stage I

Pudahuel, Metropolitan Region.

Commissioning required a new supply point for the charge center of the Central Interconnected System (SIC), besides being a direct injection alternative for the Cerro Navia substation and for reducing power flows for transmission lines connecting Polpaico and Alto Jahuel.

This substation also enables part of the flow going through the Alto Jahuel transformer to be transferred to the Metropolitan Region load center located at the Cerro Navia Substation and supply its demand.

– 220/500 kV power substation.

– 1.6 km tie line for connecting to the substation that sectioned the existing double circuit 220 kV Rapel – Cerro Navia transmission line.

– 0.5 km tie line connecting to the substation that sectioned the existing 500 kV Alto Jahuel-Polpaico transmission line.

2018

Third 500/220 kV Autotransformer Bank, Alto Jahuel

Buin, Metropolitan Region.

This project will expand power transformation capacity to the substation, thus improving service safety and incorporating reserve capacity in the event of an eventual transformer fault or outage.

Estimated for 2018

– 500/220 kV autotransformer bank, amounting to a total 750 MVA, plus one reserve unit.

– Main busbar and transfer bar upgrades for both yards.

2018

Entre Ríos Substation

Cabrero, Biobío Region

The project features construction of the Entre Ríos substation (originally known as Nueva Charrúa), the new 2×220 kV Entre Ríos – Charrúa transmission line, and sectioning of the 2×500 kV Charrúa – Ancoa 1 and 2 transmission lines.

This infrastructure will be a new 500 kV injection point for future sources of power generation and for controlling increasing short circuit levels at the existing Charrúa substation.

– New substation with 500kV and 220 kV power yards.

– 500 kV breaker-and-a-half power yard with space for the installation of 8 diagonals and a 220 kV breaker-and-a-half power yard with space for the installation of 9 diagonals.

– Three 500/220 kV autotransformer banks with respective backup units.

– 500 kV, 220 kV and tertiary auxiliary busbar.

– New 500/220 kV 750 MVA autotransformer with a tertiary winding, backup unit, auxiliary busbars, disconnect switches and respective 500 kV and 220 kV diagonals.

– New 2×220 kV transmission line between the Nueva Charrúa and Charrúa substations, with minimum capacity of 1,000 MVA per circuit at ambient temperature of 35°C, and 220 kV bays connected to two different busbar sections at Charrúa.

2019

New Lo Aguirre - Cerro Navia transmission line

Metropolitan Region, east sector.

Construction of this transmission line will increase electricity transfer capacity from the 500kV system at the Lo Aguirre substation to 220 kV at the Cerro Navia substation, thus providing enhanced capacity and safety.

– 2×220 kV transmission line between the Lo Aguirre and Cerro Navia substations. Nominal capacity amounting to 1,500 MVA.

– Approximately 12 km long, with an underground tunnel section spanning approximately 1.5 km.

– The project includes transmission line bays at the end of Lo Aguirre and Cerro Navia.

2021

2x500 kV Pichirropulli – Tineo Transmission Line

Los Lagos and Los Ríos Regions

This line will reinforce the power grid for Chile’s southern zone by increasing power transmission capacity with a view to the injection of future sources of energy from southern Chile for transmission to the central zone.

The transmission line will be entirely installed west of Highway 5 South, and 60% of the route will run parallel to an existing Transelec transmission line, which will prevent visual impact in a new zone.

– The transmission line will span approximately 145 kilometers, with 365 high voltage towers

– 500kV double circuit energized at 220 kV

– 4 AAC Verbena type conductors per phase, with 1500 MVA capacity per circuit at 35°C in the sunlight

2018
2021

Changos – Kapatur and Changos – Kimal transmission lines

Mejillones, Antofagasta Region

Construction of these lines completes part of the SING – SIC interconnection and will also increase transmission capacity between the Crucero – Encuentro knot and the National Interconnected System.

– 2×500 kV transmission line spanning approximately 140 km with capacity amounting to 1,500 MW between Los Changos and Kimal.

– 2 500/220 kV 750 MVA autotransformer Banks at the Nueva Crucero Encuentro Substation.

– 1 500/220 kV 750 MVA autotransformer bank at the Los Changos Substation.

– 2×220 kV transmission line spanning approximately 3 km with nominal capacity of 1,500 MW between Los Changos and Kapatur.

02

Our Customers

Explore a list of customers who have trusted us.

03

Commercial Contact

04

Connection Processes (Open Access)

Transelec has clear pre-determined stages for successfully managing Open Access Processes related to companies wanting to connect their projects to facilities comprising the National Power Grid (SEN) by means of existing power transmission lines or substations, as well as the connection of projects related to mandatory Upgrade Plans.

The Open Access connection process is regulated by the provisions of the General Electricity Services Law dated July 2016, specifically Articles 79 and 80. The terms and conditions for applying these articles are indicated in Exempt Resolution N°154 and its amendments issued by the National Energy Commission. According to these regulations, all coordination required for open access requests must be executed via the National Electricity Coordinator.

Exempt Resolution N°154 indicates two types of Open Access Requests (OAR):

− At Public Service Facilities: these correspond to OAR at national and zonal facilities and international interconnection facilities for public service and for development poles. These types of requests are submitted by means of the Request for Connection Solution Approval (RCSA) process.

− For Dedicated System Facilities: these correspond to OAR at dedicated power transmission facilities, in which approval depends on available technical capacity at the facility. This type of request is made by means of a Technical Capacity Usage Request (TCUR).

In order to meet regulatory requirements and ensure appropriate coordination, Transelec has a set of agreements that facilitate coordination between companies (Interconnection AgreementOperating Agreement and Physical Space and Joint Facility Usage Contract).

05

Connections Team

The cross-cutting connections team permeates the organization and includes the Business Development, Connections and Operations vice-presidencies as exclusive areas, together with the Legal Affairs Vice-presidency and the Engineering and Project Development Vice-presidency.

Communication channels are listed as follows:

Commercial coordinator

Responsible for managing the requesting and signing of agreements, and for channeling communication between the requester and Transelec. He or she accompanies the developer until the delivery of as built blueprints.

Technical coordinator

Responsible for channeling technical information such as studies, calculation logs and interconnection projects.
Site coordinator, responsible for coordinating different activities during the connection project construction stage.

Site coordinator

Responsible for coordinating different activities during the connection project construction stage.

Commissioning manager

Responsible for coordinating different activities required for ramp up.

06

Commercial Information