ross border xchange of lectricity between angladesh …€¦ · systems, hvdc system control and...
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US Energy Association // South Asia Regional Initiative for Energy, 1300 Pennsylvania Avenue, NW Suite 550 Box 142 Washington, DC 20004-3022
Telephone (202) 312-1230; Fax (202) 682-1682; website: http://www.usea.org; SARI/Energy www.sari-energy.org
Page 1
CROSS BORDER EXCHANGE OF ELECTRICITY
BETWEEN BANGLADESH, INDIA AND SRI LANKA USING HIGH VOLTAGE DIRECT CURRENT (HVDC)
U.S. AGENCY FOR INTERNATIONAL DEVELOPMENT (USAID) WORKSHOP
CO-HOSTED WITH POWER GRID COMPANY OF BANGLADESH (PGCB)
Under the South Asia Regional Initiative for Energy (SARI/Energy) Energy Transmission Partnership and the South Asia
Transmission Utilities Regional Network (SATURN), funded by the U.S. Agency for International Development (USAID),
the U.S. Energy Association and the Power Grid Company of Bangladesh (PGCB) co-hosted a workshop of over 30
delegates from Bangladesh, India, and Sri Lanka to attend a three-day discussion focused on best practices in HVDC
planning and operations.
The workshop held in Dhaka, Bangladesh, afforded the executives the opportunity to receive a first-hand overview of each
country’s preparations for planned cross border interconnections, as well as to directly interact with some of the leading
HVDC suppliers in the world.
(above) Workshop delegates from Power Grid Company of Bangladesh, Power Grid Corporation of India, Sri Lanka Ceylon
Electricity Board and Ministry of Power and Energy, USAID/Bangladesh, and resource speakers from Siemens and ABB.
The USAID/SARI/Energy program promotes energy security in South Asia through three activities areas: (1) cross border
energy trade, (2) energy market formation, and (3) regional clean energy development. Through these activities,
SARI/Energy facilitates more efficient regional energy resource utilization, works toward transparent and profitable energy
practices, mitigates the environmental impacts of energy production, and increases regional access to energy.
US Energy Association // South Asia Regional Initiative for Energy, 1300 Pennsylvania Avenue, NW Suite 550 Box 142 Washington, DC 20004-3022
Telephone (202) 312-1230; Fax (202) 682-1682; website: http://www.usea.org; SARI/Energy www.sari-energy.org
Page 2
PROGRAM HIGHLIGHTS
The workshop provided a valuable opportunity for executives from Bangladesh, India and Sri Lanka to jointly discuss
issues in preparation for the electricity interconnections between Bangladesh – India and India – Sri Lanka.
Key discussions included:
Fundamental concepts of HVDC
substation components
Converter operations and
performance
HVDC control and system operation
Requirements of reactive power and
control of harmonics
HVDC system control and protection
Performance of AC and DC filter and
harmonica control
Insulation coordination, reliability,
and system efficiency
The workshop included guest speakers from ABB, who were represented by four staff members from their Bangladesh,
Indian, and European offices. ABB led discussions on converter operations and performance, HVDC classic and VSC
systems, HVDC system control and protection, and requirements of reactive power and control of harmonics.
(above) Mr. Prince Jain, Design
Engineer, Power Grid Corporation of
India Ltd. presents on PGCIL’s
experience with performance of AC
and DC filter and harmonics control.
(right) Mr. SK Zadoo, General
Manager, Siemens Ltd. in India
leading discussions on key HVDC
substation components.
US Energy Association // South Asia Regional Initiative for Energy, 1300 Pennsylvania Avenue, NW Suite 550 Box 142 Washington, DC 20004-3022
Telephone (202) 312-1230; Fax (202) 682-1682; website: http://www.usea.org; SARI/Energy www.sari-energy.org
Page 3
Bangladesh – India Interconnection
In January 2010, the governments of Bangladesh and India signed a MOU to establish a cross border electricity
interconnection. The agreement keeps the provision for Bangladesh to export power to India in the future while PGCIL was
tasked to construct, own, operate and maintain a 400 KV double circuit line to exchange 500 MW power between the two
neighboring countries soon after the system is launched. The line is approximately 130 km in length, of which 30 km
resides in Bangladesh and 100 km in India. PGCIL will recover the construction cost under a fixed rate over 35 years. The
line is intended to facilitate exchange of electricity between Bangladesh and India, allowing Bangladesh to interconnect
with India’s grid and hopefully minimize the power crisis in Bangladesh to some extent.
(right) Power Grid Company of
Bangladesh workshop delegates
(left) Mr. Gunnar Persson, Sr. Project Manager, HVDC Sales, ABB
AB, Sweden presents on converter operations and performance,
HVDC Classic and VSC.
(left) Power Grid
Corporation of
India and
members of the
Sri Lankan
delegation during
a break in the
workshop.
US Energy Association // South Asia Regional Initiative for Energy, 1300 Pennsylvania Avenue, NW Suite 550 Box 142 Washington, DC 20004-3022
Telephone (202) 312-1230; Fax (202) 682-1682; website: http://www.usea.org; SARI/Energy www.sari-energy.org
Page 4
Keeping in view the technical considerations and reliable operation of both the systems, Baharampur (India) – Bheramara
(Bangladesh) was chosen for implementation.
The Indian part of the infrastructure will also include a 400 kV switching station at Baharampur, loop-in and loop-out of
Farakka-Jeerat 400 kV single circuit line (approximately 3 kilometers in length), and a 400 kV double circuit line from
Baharampur of India running up to Bheramara in Bangladesh (approximately 85 kilometers in length). A 500 MW HVDC
back-to-back station (400/230 kV) will be installed at Ishurdi/Bheramara in Bangladesh. Cobra (Spain) was awarded the
contract to build the transmission line and Siemens the HVDC station for Bangladesh. A2Z Ltd was awarded the Indian
portion of the 400 kV transmission line and KEC International the Behrampur substation in India.
.
US Energy Association // South Asia Regional Initiative for Energy, 1300 Pennsylvania Avenue, NW Suite 550 Box 142 Washington, DC 20004-3022
Telephone (202) 312-1230; Fax (202) 682-1682; website: http://www.usea.org; SARI/Energy www.sari-energy.org
Page 5
Bangladesh currently faces an electricity deficit of over 1,000 to 1,800 MW on average, with only about 40% of the country
accessing electricity. Funding for the Bangladesh portion of the interconnection, totaling over $10 billion, has come from
ADB, the Government of Bangladesh, and Power Grid Company of Bangladesh. Expected completion date is late
2012/early 2013. It is hoped that the interconnection with India will provide some relief from this scenario.
India – Sri Lanka Interconnection
In recent years, Sri Lanka has tapped out the majority of its domestic energy sources, including its large hydro; however,
electricity demand continues to rise. Meanwhile, India is expanding its electricity grids, has developed multiple operational
markets to increase the efficiency, and is increasing its cross border energy trade. To meet demand and provide greater
reliability to the systems, the two countries are in the planning stages for a HVDC interconnection, which will allow Sri
Lanka to tap into cheaper sources of power generation from South Asia and allow the southern region of India to have a
back-up electricity source. This interconnection will serve to improve the load profile of both countries and provide
improved system reliability.
In 2002, under the USAID SARI/Energy program, a pre-feasibility study was conducted on the viability of a submarine
electricity interconnection between the two countries. Talks progressed between the governments and a MOU was signed
between India’s and Sri Lanka’s governments and utilities in 2010. Now, the Ceylon Electricity Board and the Power Grid
Corporation of India are jointly carrying out the feasibility study. PGCIL is handling the marine studies and an evaluation
of their own territory. Likewise, Sri Lanka is evaluating the adequacy of their power system in preparation for the
interconnection. To date, the substation and terminal layouts have been completed, and the countries are conducting a
transmission line route survey and environmental studies, and selecting the site for the HVDC station.
The proposed line is a 400kV HVDC line from Madurai, India to Anuradhapura, Sri Lanka. The India territory portion will
consist of a 150 km HVDC overhead line from Madurai to Pannaikulam on the Indian sea coast. This will connect to an
HVDC terminal at Madurai. The submarine portion will be built between Pannaikulum, India and Mannar, Sri Lanka – 127
km in length. The Sri Lankan land route will start at the seacoast area of Mannar and travel to Anuradhapura via a HVDC
overhead line 110km in length, which will then connect to a HVDC terminal at Anuradhapura.
Land development and earth filling in Bangladesh for the interconnection with India.
US Energy Association // South Asia Regional Initiative for Energy, 1300 Pennsylvania Avenue, NW Suite 550 Box 142 Washington, DC 20004-3022
Telephone (202) 312-1230; Fax (202) 682-1682; website: http://www.usea.org; SARI/Energy www.sari-energy.org
Page 6
RESULTS
This three-day workshop included participants from the organizations of Bangladesh, India and Sri Lanka primarily
responsible for the planned electricity interconnections. Delegations from India and Sri Lanka traveled to Dhaka,
Bangladesh, where they were hosted by Power Grid Company of Bangladesh to discuss High Voltage Direct Current
(HVDC) and its applications to the cross border energy trade. The workshop promoted an improved understanding of
power electronic equipment, how these devices can be applied, and how they interact with the rest of the power system,
with consideration for both technical and economic factors. The training program was followed by a brief site visit to
PGCB’s national dispatch center, outside Dhaka. Over the course of the workshop, the delegates received training in on
power system and transmission technology to promote regional uniformity and cooperation in power transmission in South
Asia, as well as to lead to greater confidence between the countries and utilities.
Delegates were providing training on the latest best practices in:
Applications of conventional and voltage-source converter HVDC transmission
Power converter performance
HVDC system integration
Variable frequency transformer (VFT) equipment and applications
FACTS devices for reactive compensation – static VAR compensators (SVC) and static compensators (STATCOMS)
Power electronics for series compensation
(left & below) Proposed HVDC
interconnection between India and Sri
Lanka
Interconnection options under
consideration:
1.) 500MW Mono pole – stage I
500MW – stage II
2.) 2x500MW – Stage I
3.) 2x250MW Bi-pole – Stage I
2x250MW – Stage II
Conventional and VSC
US Energy Association // South Asia Regional Initiative for Energy, 1300 Pennsylvania Avenue, NW Suite 550 Box 142 Washington, DC 20004-3022
Telephone (202) 312-1230; Fax (202) 682-1682; website: http://www.usea.org; SARI/Energy www.sari-energy.org
Page 7
Specific outcomes of the exchange are listed below:
Siemens provided the delegates with a project design and planning Gantt diagram for use in their project planning.
The diagram offered an organizational chart and execution sub units, including an overview of the vendor’s project
management, with a “CEO” for each project, project management subunits, installation managers, etc. The Gantt
diagram can facilitate ensuring as smooth and seamless process as possible, to reduce errors and overhead expenses.
Siemens provided strong recommendations to the delegates that they ensure reliable availability and high quality of
equipment that is procured. The speaker also recommended the utilities conduct a quality assurance of procured
equipment.
Siemens led a discussion on the importance of quality converter and inverter station design, including the
benefits of using high-quality prefabricated buildings. The discussion included building design based on
recommendations for longevity and structural support. Prefabricated buildings normally have a guaranteed life of
15 years, but the utility needs them to have a life of 40+ years. So, construction of these buildings is very important
because if the utility experiences constructional issues, the whole project has to be shut down and fixed, which leads
to large cost overruns.
Siemens exposed the delegations to the latest valve hall designs, including where the unit is suspended from the
ceiling to handle seismic fluctuations. Additionally, the control room is designed with a small window overlooking
the valve hall so that quick and easy monitoring can be done without having to enter the room and disturbance and
causing tripping.
Siemens stressed the need for the vendor and utility to build a strong relationship so that the vendor has the
necessary comfort level to provide constant feedback to the utility, and the utility is comfortable enough to ask for
questions whenever necessary. Power Grid Company of Bangladesh especially agreed with the value of this.
At the request of the Indian and Sri Lankan delegates, ABB provided a presentation on current best practices for
submarine interconnections for potential application in the India-Sri Lanka interconnection.
The Bangladesh and Indian delegations held a number of informal discussions to “iron out” issues leading to the
interconnection, which led to a better understanding of what contingencies each country’s system had planned for
and, therein, greater confidence in the others preparations.
Power Grid Company of Bangladesh hosted Power Grid Corporation of India on a site visit to a HVDC
construction site to try to resolve some outstanding issues.
Siemens held one-on-one planning meetings with PGCB on the interconnection project.
In response to an expression of interest from the Bangladesh delegation in underground cable systems, ABB
presented on some current best practices in the field. ABB recommended the use of “HVDC Light” for any
submarine interconnections, and even for most above-ground transmission lines. HVDC Light allows for
underground (or undersea) cabling and, therefore, somewhat easier permitting, lower project cost, short installation
and implementation time, and low operation and maintenance cost. HVDC Light offers voltage and reactive power
control, loss reduction in a connected AC network, increased transfer capability in AC lines, connection in weak
network points, and passive load operation. HVDC Light is also environmentally adapted by short permitting time,
a smaller footprint and lower profile of converters, oil free cable, reduced magnetic fields, and "invisible"
transmission. In addition, given that the cables for HVDC Light are much lighter in weight compared to HVDC
classic, it is better suited to submarine installation.
On the final day of the workshop, the speaker from Siemens congratulated Power Grid Corporation of India on their
superb expertise and efforts to date on cross border interconnections, and encouraged them to share their
knowledge with their peers from Bangladesh and Sri Lanka.
Ceylon Electricity Board had meetings with Bangladesh Power Development Board to discuss CEB potentially
hosting training for BPDB linesmen.
The Ministry of Power & Energy representative presented at an Asian Development Bank-sponsored meeting (that
was also taking place in Dhaka at the time of this workshop) on Sri Lanka’s work within the solar energy sector.
US Energy Association // South Asia Regional Initiative for Energy, 1300 Pennsylvania Avenue, NW Suite 550 Box 142 Washington, DC 20004-3022
Telephone (202) 312-1230; Fax (202) 682-1682; website: http://www.usea.org; SARI/Energy www.sari-energy.org
Page 8
WORKSHOP PARTICIPANTS
BANGLADESH:
1. Mr. Md Abu Taher, Chief Engineer (PSC), Bangladesh Power Development Board
2. Mr. Md. Abul Kashem Mahmod, Executive Engineer, System Planning, Bangladesh Power Development Board
3. Mr. Nur Mohammad Samsuzzoha Kabir, Sub-Divisional Engineer, Design & Inspection, Bangladesh Power
Development Board
4. Mr. Md. Rafiqul Islam, Deputy General Manager, Design, Power Grid Company of Bangladesh
5. Mr. Chowdhury Alamgir Hossain, Deputy General Manager, SPMC, Power Grid Company of Bangladesh
6. Mr. Md. Abdus Salam, Deputy General Manager, TMCC, Power Grid Company of Bangladesh
7. Mr. Arun Kumar Saha, Deputy General Manager (I/C), Planning, Power Grid Company of Bangladesh
8. Mr. A.K.M. Gause Mohiuddin Ahmed, Manager, SSD, Power Grid Company of Bangladesh
9. Mr. Md. Alamgir Hossain, Manager, Grid Interconnector Project, Power Grid Company of Bangladesh
10. Mr. Q.M. Shafiqul Islam, Manager, GMD – Ishurdi, Power Grid Company of Bangladesh
11. Mr. Md. Jamil Ahmed, Manager, SPMD-1, Dhaka, Power Grid Company of Bangladesh
12. Mr. Md. Rafiqul Islam, Manager, SPMD-2, Dhaka, Power Grid Company of Bangladesh
13. Ms. Kaniz Fatema Khondaker, Deputy Manager, Design, Power Grid Company of Bangladesh
14. Mr. Sayed Shahriar Abdullah, Deputy Manager, Design, Power Grid Company of Bangladesh
15. Mr. Md. Abdul Hamid Rana, Deputy Manager, Design, Power Grid Company of Bangladesh
INDIA:
1. Mr. Vikram Bhal, Chief Manager, PowerGrid Corporation of India Ltd.
2. Mr. Mange Ram Chauhan, Chief Design Engineer, PowerGrid Corporation of India Ltd.
3. Mr. Mohammad Arshad, Design Engineer, PowerGrid Corporation of India Ltd.
4. Mr. Pradip Kumar Chatterjee, DGM (Engg-S/S), PowerGrid Corporation of India Ltd.
5. Mr. Prince Jain, Design Engineer, PowerGrid Corporation of India Ltd.
6. Mr. Praveen Ranjan, Resident Project Manager, India-Bangladesh Inter-connector Project, Power Grid Corporation
of India Ltd.
SRI LANKA:
1. Mr. D.A.U. Daranagama, Additional Secretary (Planning & Development), Ministry of Power & Energy
2. Mr. B.N.I.F. Wickramasooriya, General Manager, Ceylon Electricity Board
3. Mr. R.H.R. Lokubalasooriya, Additional General Manager (Tr.), Ceylon Electricity Board
4. Mr. D.K.B.S. Thilakasena, Additional General Manager (CS), Ceylon Electricity Board
5. Mrs. T.A.K. Jayasekera, Chief Engineer (Tr. Planning), Ceylon Electricity Board
6. Dr. P.N. Fernando, Consultant (observer)
For more information, contact Sarah Blanford at [email protected] or visit www.sari-energy.org.