December 28, 2021

ENDE TRANSMISIÓN INSTALLS IN PARADISE 230/115 kV SUBSTATION, THE FIRST STATIC COMPENSATION SYSTEM IN BOLIVIA.

Fulfilling one of its objectives of social responsibility, Ende Transmission, a subsidiary of Ende Corporación, culminated in the month of November the educational program “Together we transmit Energy”, in schools of the rural and peri-urban area of the departments of Cochabamba, Santa Cruz, Tarija, La Paz, Oruro, Beni, Potosí and Sucre.

The objective of this program is to provide information that enables the operation of the functioning of the electric system in Bolivia and that it also allows to generate awareness of the care that both children and adults, must have in relation to electricity and high-voltage towers.

With the program it has been possible to benefit more than 140 educational units from the national territory, more than 9,500 students and 600 teachers directly, as well as parents and people from these communities indirectly.

The company carries out this activity 18 years ago in the rural areas of Bolivia, because it considers of vital importance the dissemination of educational information on a service that is essential for the development of the country: electrical energy. energy.

ENDE TRANSMISIÓN BUILDS 115 kV ELECTRIC LINE FOR CONNECTION OF BERMEJO TO SIN.

The population of Bermejo is located in the extreme south of the Plurinational State of Bolivia in the border region with the Republic of Argentina, this geographical condition and a low demand for energy in the past motivated the supply of energy from an isolated system based on Diesel thermoelectric generation units, however, this system does not guarantee a reliable, flexible and economic supply, becoming a limitation for the growth of the local industry, as well as the planning of new projects that guarantee the growth of the region.

In this sense, ENDE Transmission S.A. After receiving the formal delegation from ENDE Corporación, it is progressing in the execution of the project “115 kV La Angostura – Bermejo Line”, which will allow the connection of the isolated Bermejo electrical system to the National Interconnected System (SIN).

The project, which is 61% complete to date, includes the construction of approximately 138 km of 115 kV electrical transmission line from the La Angostura electrical substation to the Bermejo electrical substation, and also includes the construction of a line bay in 115 kV at the La Angostura substation and the construction of the new Bermejo substation with all the respective general facilities.

PHOTO APPENDIX

Through the following photographs, you can see the work that has been done in it:

FOUNDATION CONSTRUCTION

ASSEMBLY OF STRUCTURES

WORKS S/E BERMEJO

WORKS S/E ANGOSTURA

ENDE TRANSMISiÓN COMMITTED TO THE GROWTH OF THE BOLIVIAN TRANSMISSION NETWORK, EXECUTES IMPORTANT PROJECTS

ENDE Transmisión SA, a subsidiary of ENDE Corporación, with the purpose of expanding and strengthening the transmission network in the National Interconnected System (SIN), in recent years, between the 2016 and 2021 administrations, has built 2,027.81 kilometers of lines transmission in high and extra high voltage: 364.15 km at 115 kV; 46.3 at 132 kV; 1,470.58 km at 230 kV and 146.78 km at 500 kV.

Next, the evolution graph in the construction of the transmission lines is presented:

N°	PROJECTS DETAIL	TENSION [kV]	TOTAL PROYECT [km]	2016 [km]	2017 [km]	2018 [km]	2019 [km]	2020 [km]	2021 [km]
1	Línea Sucre – La Plata – Potosí	115	112,36	112,36	–	–
2	Línea Palca – Mazocruz 230kV	230	72,00	72,00	–	–
3	Línea Warnes – Brechas	230	118,75	80,64	38,11	–
4	Línea Warnes – Urubó 230 kV	230	20,96	13,20	7,76	–
5	Línea San José II – Santivañez 230 kV	230	82,11	–	82,11	–
6	Línea Caihuasi – Jeruyo 115 kV	115	46,00	–	46,00	–
7	Línea Mazocruz – Pallina 230 kV	230	23,00	–	23,00	–
8	Línea Uyuni – Planta Solar Uyuni 230 kV	230	4,50	–	4,50	–
9	División de línea Valle Hermoso – Catavi en Irpa Irpa	115	1,20	–	1,20	–
10	Subestación Villa Tunari 230 kV	230	0,20	–	0,20	–
11	Línea Bélgica – Los Troncos 230 kV	230	103,58	–	96,71	6,87
12	Línea Huaji – Caranavi 115 kV	115	74,45	–	70,90	3,55
13	Repotenciamiento Línea Vinto – Santivañez	230	123,40	–	–	123,40	–	–
14	Línea Litio – Salar 115 kV	115	81,50	–	–	81,50
15	Línea de Transmisión Juana Azurduy de Padilla	132	46,30	–	–	46,30
16	Conexión al STI de Subestaciones Entre Ríos I y Entre Ríos II	230	2,03	–	–	2,03
17	Anillo Energético del Sur	230	323,61	–	–	276,40	47,21	–	–
18	Adecuación Línea Warnes – Urubó 230 kV	230	21,25	–	–	2,40	18,85	–	–
19	Conexión Solar Oruro al SIN	230	50,10	–	–	–	50,10	–
20	Línea Arboleda – Las Lomas	230	13,11	–	–	–	13,11	–
21	Conexión ECEBOL Potosí 115 kV al SIN	115	4,50	–	–	–	4,50	–
22	Línea Warnes – Nueva Santa Cruz 230 kV	230	13,50	–	–	–	2,45	–
23	Subestación Yapacaní 230 kV	230	0,10	–	–	–	0,10	–
24	Subestación San Julián 230/115 kV	230	1,03			–	1,03	–	–
25	Segunda Terna Bélgica – Los Troncos 230 kV	230	98,78	–	–	–	98,78	–
26	Línea Tarija – Angostura 115 kV	115	44,17	–	–	17,70	12,30	13,35	0,79
27	Línea Brechas – El Dorado 230 kV	230	51,15			–	–	16,02	35,13
28	Ampliación San José – Santivañez	230	0,77	–	–	–	–	–	0,77
29	Línea de Transmisión 230 kV Troncos – Guarayos – Trinidad	230	383,25			–	–	–	357,70
30	Línea Carrasco – Santivañez 500 kV y Subestaciones Asociadas	500	233,10	–	–	–	–	29,61	117,17
TOTALES				278,20	370,49	560,15	248,43	58,98	511,56
TOTALES ACUMULADOS				278,20	648,69	1.208,84	1.457,27	1.516,25	2.027,81

With the start-up of the transmission projects described, the achievements and benefits that have materialized, among others, are the following:

The transmission system of the National Interconnected System (SIN) has been strengthened, with the execution of projects in the departments of La Paz, Santa Cruz, Tarija, Chuquisaca, Potosí and Cochabamba.
The connection to the SIN of new generation plants, thus making it possible to dispose of the generated energy, making it possible for distributors to meet the growing demand in the regions.
An underground high voltage line was installed to supply electrical energy to the Potassium Salts and Lithium Carbonate Plants, for the industrialization of the evaporite resources of the Uyuni salt flat, located in the Salar de Uyuni itself, building the underground line in highly corrosive soil.
The first section of the 132 kV transmission line was completed for the international interconnection with Argentina, located in Bolivian territory, which will allow the sale of electricity to the neighboring country and will generate income for Bolivia.
The country’s first two extra-high voltage lines, at 500 kV, are being built in the central section of the SIN, which will allow the transmission of power from current generation plants and those planned for the future, located in the central and eastern areas. , to supply the national demand, as well as the export market.

UNICOM/ENDE TRANSMISIÓN: Padilla Juana Azurduy power line has 86% advance

The National Electricity Company (Ende Corporación), through its subsidiary company Ende Argentine transmission S.A.(Etasa), it resumed in 2021 the construction of the section in Argentine territory of the electric line that is part of the “Juana Azurduy of Padilla 132 KV Bolivia – Argentina” project and to date registers an advance of 86%.This work will allow Bolivia to export approximately 120 power megawatts to the neighboring country.

Last week gathered in Salta, Argentina, Executive President of Ende Corporación, Marco Escobar, and Salta Ministry and Energy Secretariat, Flavia Royon, to present the progress of this project.

On the occasion, the Ministry and Energy Secretary, Flavia Royon, said that “they are very honored with the visit of the Board of this who have developed an impeccable work in order to materialize this work.We appreciate all the effort overturning to the task of this project that will improve the well-being of the inhabitants of the areas included and respond to the unsatisfied energy demand. ”

For his part, Escobar said that “it is important to resume relations with Argentina’s brother’s brother after the pandemic.We are willing to concrete together the first stage comprising the transmission line at 132 kV, a project that is being realized and only lack the line of the line in a small stretch in Argentine territory. ”

The project includes a line of 120.4 kilometers (km) that will join the Yaguacua substation (Bolivia) with the Tartagal Substation (Argentina);It is composed of two sections, one in the Bolivian territory and another in the Argentine territory.The transmission line at 132 KV in Bolivia was already concluded, while on the Argentine side a similar work is built and already has 86% advance -73,9 km: an urban stretch of 7,8 km and other rural 66, 1 km-.

As a result of the energy policy defined by the Government of Luis Arce, the Plurinational State of Bolivia has specified various agreements with neighboring countries to materialize the exchange of electricity with the objective of being able to export the electricity surpluses generated in the country.

December 10, 2021

SPVPT SYSTEM (SOFTWARE FOR VALUATION OF TRANSMISSION PROJECTS)

ENDE TRANSMISIÓN has hired the consulting firm HMV Ingenieros – Colombia to carry out the update of the study of “Methodology for the determination of reference costs for transmission facilities”, known as SYNEX 2007, as a product of this consultancy the SPVPT Software has been developed (Software for the Evaluation of Transmission Projects).

In this management ENDE TRANSMISIÓN S.A. (ETR) through the Planning Management on June 11, 2021 signed with the ELECTRICITY AND NUCLEAR TECHNOLOGY SUPERVISORY AUTHORITY (AETN) an inter-institutional agreement for the use of the SPVPT System so that this Authority and the Transmitting Agents can use the SPVPT program as a tool for determining the reference costs of transmission components. This program allows the Transferring Agent and the Regulatory Entity to have a tool with technical and economic information, indexing factors, updating unit values, etc. for transmission lines, power transformers and autotransformers, capacitor bank, reactor bank, neutral reactors and the respective bays in voltage levels in 69, 115, 230 and 500 kV, types of conductors, bundles of conductors, gas insulation and air.

The SPVPT system for the evaluation of Substations considers; Building Units (UUCC) and other Building Units (Common Modules :), they are described below.

Substation Construction Unit (UUCC), Set of maneuvering facilities (bays), busbar extensions (busbar module), major substation equipment (Bank of; Transformers, Reactors, Capacitors).
Other Construction Units (Common Modules), Construction unit that includes all the costs that are common to a substation: common civil module, buildings, common electrical module, special electrical studies, control and protection boards, compensation, auxiliary services and communications.

The SPVPT system for the evaluation of transmission lines considers 18 variable construction units at voltage levels of 69, 115, 230 and 500 kV: overhead lines, communications (fiber optic) and underground lines.

On July 22, 2021, the SPVPT System (Transmission Project Assessment Software) has been approved for use by the ELECTRICITY AND NUCLEAR TECHNOLOGY SUPERVISORY AUTHORITY (AETN) through resolution AETN No. 398/2021.

December 6, 2021

UNICOM/ENDE TRANSMISIÓN: ENDE TRANSMISIÓN ADVANCES IN THE CONSTRUCTION OF THE 230 kV ELECTRIC LINE LOS TRONCOS – GUARAYOS – TRINIDAD

ENDE Transmisión SA, a subsidiary of ENDE Corporación, is executing the project “Transmission Line 230 kV Los Troncos – Guarayos – Trinidad”, which will allow to extend the Interconnected Trunk System to the north of the department of Santa Cruz and to the city of Trinidad in the department del Beni, through new transmission lines in 230 and 115 kV. In an inspection carried out by a technical commission of the Company, chaired by the General Manager, Ing. Jorge Durandal Quinteros, it was found that the project currently presents a physical progress of 79%.

The scope includes the construction of the transmission line of approx. 383.30 km in length, made up of two sections with two different tensions; The first section of 372.16 km double triple 230 kV that will start in the existing substation Los Troncos 230 kV, will cross the new intermediate substation Guarayos 230 kV and in turn will connect with the new lowering substation called El Paraíso 230/115 kV ; the second section of 11.14 km double triplet at 115 kV, which will continue from the new El Paraíso 230/115 kV step-down substation to the existing Trinidad substation.

The main objective of this project is to replace diesel thermoelectric generation in the isolated system of Ascención de Guarayos and the Moxos Thermal Power Plant (Trinidad), which represents a higher economic cost and environmental impact for the country. In addition, it will make it possible to reinforce the reliability of the electricity supply to the city of Trinidad, the population of Guarayos, and will make it possible to increase the electricity transmission capacity to meet the growing demand of these important regions of the country.

UNICOM/ENDE TRANSMISIÓN: ENDE TRANSMISIÓN SUCCESSFULLY CARRIES OUT THE RECERTIFICATION COURSE OF LIVE LINE MAINTENANCE FROM 230 to 500 KV

ENDE Transmisión, a subsidiary of ENDE Corporación, has as its main activity maintaining the reliability and normal operation of the Transmission Network in the National Interconnected System (SIN), with high performance index values. With this purpose and within the framework of its 2021 management training plan, it has successfully completed the Live Line Maintenance Recertification Course from 230 to 500 kV.

This important course had the participation of specialized and outstanding line maintenance personnel from all the Regional and Sub-Regional offices of ENDE Transmisión (Cochabamba, Oruro, La Paz, Beni, Santa Cruz, Trópico, Potosí, Sucre, Tarija, Uyuni , San Borja and Gran Chaco), who demonstrated high capacity, responsibility and security in the execution of this type of work.

The course was carried out in a first theoretical stage virtually from October 13 to 14, 2021 and in a second practical field stage in 230 and 500 kV structures from October 18 to 29, 2021. For this course, it was counted with the presence of 2 instructors with vast experience in live line maintenance from the Brazilian CTST company (Mr. Marcelo Carvalho and Mr. Raimundo Baia Everdosa); This theoretical-practical activity allowed keeping the skills up-to-date and consolidating the knowledge of the live line maintenance technical staff.

The theoretical-practical scope of said course was as follows:

Review and instruction on philosophy and principles of live online maintenance.
Planning and methodology of live line maintenance work for Transmission overhead lines.
Risk analysis and electrical safety distances.
Materials, Tools and Equipment Technology.
Inspection, testing, cleaning and storage of tools and materials.
Safety in insulating equipment and conductive clothing / suit.
Entry to potential.
Entrance to potential through insulating ropes, chair, baskets or ladders.
Replacement of insulators in 230 kV voltage structure, in single triplet and double bundle of conductors in horizontal phase arrangement.
Replacement of insulators in 230 kV suspension structure, in single triplet and double bundle of conductors in horizontal phase arrangement.
Replacement of insulators in suspension structure 230 kV, double triplet and double bundle of conductors in vertical phase arrangement.
Replacement of insulators in 230 kV voltage structure, double triplet and double bundle of conductors in vertical phase arrangement.
Inspection and analysis of tension and suspension structures at 500 kV, for implementation of live line maintenance methodology.

The team of instructors of the CTST company in Brazil, in their technical report of the activity carried out, highlighted the participation of the personnel as highly competent in the technical, as well as human.

UNICOM / ENDE TRANSMISIÓN: ENDE TRANSMISSION CONCLUDED ELECTRICAL LINE THAT ALLOWS CONNECTION TO THE SIN OF THE EL DORADO WIND FARM

ENDE Transmisión SA, a subsidiary of ENDE Corporación, concluded in this management the execution of the project “Transmission Line 230 kV Las Brechas – El Dorado”, which allows the injection to the National Interconnected System (SIN) of the electrical energy generated by the “El Dorado Wind Farm”, the largest in Bolivia with an installed capacity of 54 MW generated through the 15 installed wind turbines that are located south of the city of Santa Cruz de la Sierra, in the municipality of Cabezas.

The scope of ENDE Transmisión included the construction of the corresponding extensions in the Las Brechas and El Dorado electrical substations in 230 kV, as well as the construction of 51.15 km of electrical transmission line in double complete with two conductors per phase.

This important project is part of the national strategy to transform the energy matrix, which contributes to the execution of renewable energy projects, in order to displace the use of gas and diesel for electricity generation. Also reducing the environmental impact and facilitating, for example, that the gas can be destined to export markets for commercialization.

UNICOM/ENDE TRANSMISIÓN: Minister of Hydrocarbons and Energies inspects the solar panels that ENDE Transmisión has in its building for electricity consumption

The Minister of Hydrocarbons and Energies, Franklin Molina Ortiz, paid a visit to the ENDE Transmisión company, a subsidiary of ENDE Corporación, with the aim of learning about the photovoltaic system that it has in its central building in the city of Cochabamba for the consumption of electric power.

On the occasion the Minister indicated that “as a result of the measures applied by the Ministry of Hydrocarbons and Energies, among which the Austerity Policy established for all the subsidiaries and affiliates of the National Electricity Company (ENDE) can be indicated, an increase in net profits that will go from 767 million Bolivianos obtained in 2020, to a figure of more than 1,000 million Bolivianos projected for the 2021 management ”.

“The increase in the profits of the 2021 management compared to the previous year would be 41%. This achievement will allow the delivery of greater resources to the General Treasury of the Nation for the benefit of all Bolivians, ”said the Minister.

The photovoltaic system that is located on the terrace of the offices and on the roofs of the ENDE Transmisión warehouse buildings, occupies a total area of 1,300 m2, is made up of 667 modules, whose peak installed power is 180 kWp, which work in parallel automatically and synchronized with the network of the distribution company ELFEC.

Through Supreme Decree 4477 on Distributed Generation and its regulations, it is allowed to inject all excess energy into the network of distribution companies, in this case ELFEC, since the ENDE Transmisión system has equipment that allows this operation.

The objective of this photovoltaic system is to promote energy efficiency projects and reinforce the commitment to caring for the environment, since solar panels generate clean electrical energy and replace a significant part of its current consumption, helping to optimize energy use. , with the aim of minimizing CO2 emissions and consequently, the environmental impact.

November 23, 2021

ENDE TRANSMISIÓN’S MEASUREMENT LABORATORY

There are several definitions that can explain what metrology is, and although it has several branches, the best-known definition defines metrology as: “The science in charge of measurement”. Undoubtedly, measurement is a constant activity in each and every human being, practically every day measurements are made in the different facets of life and nobody is aware of it, in such a way that the personnel who work in the laboratories Metrology is not happy with the very basic definition that has spread through the internet.

In an attempt to try to better clarify the definition, we can say that metrology “is the science that has as its object the study of measurable properties, measurement scales, systems of units, measurement methods and techniques. Likewise, this science is in charge of evaluating the quality of measurements and their constant improvement, facilitating scientific progress, technological development, social welfare and quality of life ”.

Based on this, we can say that metrology includes all aspects, both theoretical and practical, that are related to measurements, which is very important for humanity and for the development and progress that has been achieved throughout more than 100 years of industrialization and more than 25 years of the digital age. Undoubtedly, metrology is a very important discipline that deals with different uncertainties related to measurement in any field, regardless of whether it is the scientific or technological field.

Metrology and the metrology laboratory are basically in charge of three main areas of measurement:

The definition of internationally accepted units of measure.
The realization of the units of measurement by scientific methods.
Establishment of traceability chains, which is possible through the determination and documentation of the value and accuracy of a measurement.

The work carried out in the laboratory is divided into three large branches, which serve to better classify the units of measurement and for the specialization of professionals in each of these large categories.

Scientific Metrology: Which is responsible for the organization and development of measurement standards, as well as their maintenance.
Industrial Metrology: This category of metrology ensures the correct operation of the measurement instruments that are implemented in the industrial sector, as well as in the production and verification processes.
Legal Metrology: This category of metrology is responsible for measurements that mainly influence the transparency of business transactions, the health and safety of citizens.

Measurements play an important role in people’s daily lives, they are found in any of their activities, from estimating a distance with the naked eye, to a control process or basic research.

In ENDE Transmisión’s metrology laboratory we have class A standard equipment, to be able to perform the calibration of a wide variety of measurement instruments, such as digital multimeters, amperometric clamps, insulation meters, thermographic cameras and torque meters.

For the calibration of digital multimeters and amperometric clamps we have two FLUKE brand standard equipment (5522A and 5080), for the insulation meters one FLUKE 5080 standard equipment.

For thermographic cameras we have a standard FLUKE 4180 equipment.

For the torque meters we have a standard CDI torque equipment.

Some years ago, thermographic cameras were sent abroad every five years for calibration, causing the equipment to be unavailable for long periods of time, a similar case occurred with torque meters, which were sent to the city of Santa Cruz for their respective calibration. Currently this does not happen, since ENDE Transmisión has the following instruments, which in their entirety can be calibrated and reviewed in the measurement laboratory:

Type of instrument	Ammount
Digital multimeters	77
Amperometric clamps	63
Insulation meters/td>	60
Thermographic cameras	12
Torque meters	87
CT analyzer	12
switch analyzer	15
PT analyzer	8
Insulation analyzer	15

The Fluke 5080 standard instrument allows us to perform measurements between 0 to 1020 VAC / VDC, 0 to 20 AAC / ADC, 0 to 100 kOhm, with the 4180 standard instrument we can perform measurements between 0 to 120 degrees centigrade, with the CDI torque we can perform measurements from 0 to 340 Nm.

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