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

Nueva Charrúa Substation

Cabrero, Biobío Region

The project considers construction of the Nueva Charrúa substation, the new 2×220 kV Nueva Charrúa – Charrúa transmission line, and sectioning of the 2×500 kV Charrúa – Ancoa 1 and 2 transmission lines.

Infrastructure will be a new 500 kV injection point for connecting future power generation sources and controlling short circuit level surges at the already existing Charrúa substation.

– New substation with 500kV and 220 kV yards.

– 500 kV one and a half breaker yard with space for installing 8 diagonals and a 220 kV one and a half breaker yard with space for installing 9 diagonals.

– Three 500/220 kV autotransformer banks with their respective reserves.

– Auxiliary busbar at 500 kV, 220 kV and a tertiary winding.

– New 500/220 kV 750 MVA autotransformer, with a tertiary winding, reserve unit, auxiliary busbars, disconnectors 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 two 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

Pichirropulli - Puerto Montt transmission line

Los Lagos Region, parallel to the Valdivia – Puerto Montt transmission line at the Rahue – Puerto Montt section

This transmission line will reinforce the power transmission system in southern Chile, increasing transmission capacity with a view to injection of future energy sources from southern Chile toward the central zone.

– Length of approximately 141 km.

– Double circuit at 500 kV, energized at 220 kV.

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

2018
2021

Changos – Kapatur – Nueva Crucero Encuentro transmission line.

Mejillones, Antofagasta Region.

New 2 x 220 transmission line, estimated for 2018

New 2 x 500 transmission line, estimated for 2021

Awaiting decree issuance.

Construction of this project is part of completing SING – SIC power grid interconnection, and will also boost 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 Nueva Crucero Encuentro.

– 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 amounting to 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

Nueva Charrúa Substation

Cabrero, Biobío Region

The project considers construction of the Nueva Charrúa substation, the new 2×220 kV Nueva Charrúa – Charrúa transmission line, and sectioning of the 2×500 kV Charrúa – Ancoa 1 and 2 transmission lines.

Infrastructure will be a new 500 kV injection point for connecting future power generation sources and controlling short circuit level surges at the already existing Charrúa substation.

– New substation with 500kV and 220 kV yards.

– 500 kV one and a half breaker yard with space for installing 8 diagonals and a 220 kV one and a half breaker yard with space for installing 9 diagonals.

– Three 500/220 kV autotransformer banks with their respective reserves.

– Auxiliary busbar at 500 kV, 220 kV and a tertiary winding.

– New 500/220 kV 750 MVA autotransformer, with a tertiary winding, reserve unit, auxiliary busbars, disconnectors 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 two 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

Pichirropulli - Puerto Montt transmission line

Los Lagos Region, parallel to the Valdivia – Puerto Montt transmission line at the Rahue – Puerto Montt section

This transmission line will reinforce the power transmission system in southern Chile, increasing transmission capacity with a view to injection of future energy sources from southern Chile toward the central zone.

– Length of approximately 141 km.

– Double circuit at 500 kV, energized at 220 kV.

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

2018
2021

Changos – Kapatur – Nueva Crucero Encuentro transmission line.

Mejillones, Antofagasta Region.

New 2 x 220 transmission line, estimated for 2018

New 2 x 500 transmission line, estimated for 2021

Awaiting decree issuance.

Construction of this project is part of completing SING – SIC power grid interconnection, and will also boost 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 Nueva Crucero Encuentro.

– 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 amounting to 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

Transelec has clear predetermined stages for successfully managing connection processes for companies who need to connect their projects to facilities that are part of the Interconnected System, whether they choose to connect to substations or to existing transmission lines.

The connection is regulated by the General Electricity Services Law, Electricity Regulations and the Service Quality and Safety Technical Standard. All connections are subject to approval by the respective CDEC.

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