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GSES Master Class at Renewable Energy India (REI) Expo 2017

REI-2017

GSES is official training partner in the Renewable Energy India Expo 2017 organized by UBM India. The Renewable Energy India Expo is an annual event, which is considered to be the epicentre for deliberations on mainstreaming of renewable energy in India. The 11th Renewable Energy India Expo will commence on 20th September 2017 at India Expo Centre, Greater NOIDA, India. The mega event is expected to attract over 16,000 trade visitors, 550 exhibitors, 1,000 delegates and 10 country pavilions from across the globe and is going to host business matching, workshops, and knowledge based conference sessions.

GSES as the official training partner of REI 2017 will conduct two Master Classes to address issues on the following topics. The classes will be delivered in lecture format using PowerPoint presentations and sharing of case examples.

GSES Training Master Class in REI 2017:

S. No.

Master Class Topic

Date & Time

Learning Outcome

1

Grid connected PV systems with battery storage

21st Sept. 2017

11:00 - 18:00

  • Advantage of grid connected PV systems with battery storage
  • Configuration of grid connected PV system
  • Sizing battery storage and PV array
  • Sizing and selecting inverters

2

Design and maintenance of grid connected rooftop PV systems to ensure safety and performance 

22nd Sept. 2017

11:00 - 16:00

  • Optimizing design based on site parameters to increase performance 
  • System protection and safety 
  • Operation and maintenance

Venue:

Renewable Energy India Expo 2017, India Expo Centre, Greater NOIDA, India

Fee Structure:

Ticket Type

Price (INR)

Price (USD)

One Day Registration

4000

70

Two Days Registration

7000

110

GSES Principal Trainers:

Geoff Stapleton: Founder and Managing Director, GSES Australia; Co-founder and Director of GSES India

Dwipen Boruah: Co-founder and Managing Director, GSES India

To know more about GSES trainers click here

Register here for GSES master class at REI Expo 2017 

 

5-Days Grid Connected PV Systems Design & Installation Course Concluded

The 5-days comprehensive course on Grid Connected PV Systems Design & Installation was brought to end on 24th June 2017. The course covered detailed technical information and step-by-step methodology relating to design and installation of grid-connected solar PV systems. The course was attended by engineers and professionals from Sri Lanka, Singapore, Bahrain and different states of India.

June 2017 Training

What did the participants like most about the programme?

  • The in-depth knowledge of master trainer Mr. Dwipen Boruah has been of great insight. Each concept was taught in easy-to-understand way  - Namita Chauhan
  • It has been a good program especially from the ‘design’ perspective. The faculties are all good  -  Ashish Srivastava
  • All the trainers are good at their knowledge and deliver well  – Mohan Sawhney
  • Sharing of practical examples and real-life experiences have been of great help - Sanjeewa Perera
  • Trainers explained the subject matter really well  -  Sujit Abraham
  • Practical knowledge of master trainer Mr. Dwipen Boruah has helped understand the concepts better – Aman Tiwari
  • The training knowledge is going to be of much use in my job  – Ng Kar Hui (Emily)
  • The knowledge gained in the 5-day course shall be implemented in my work and all trainers/staffs are very friendly & helpful – Hla Hla Khaing

 

The Second Batch of 4 Weeks Professional Advantage Course Concluded

The second batch of 4 Weeks Professional Advantage Course on Solar Photovoltaic (PV) Systems Design, Installation & Maintenance ended on 26th May 2017. The course covered detailed technical information and step-by-step methodology for design, installation, testing, commissioning and maintenance of grid-connected and off-grid solar PV systems. The course was attended by engineers, professionals and entrepreneurs from different states of India.

 

4Weeks May 2017

 

What did the participants like most about the programme

 

  • Experience shared by Principal Trainer Mr. Dwipen Boruah was very helpful 

– Krishna Kumar Gupta

  • The content of the book and the method of teaching was excellent. The experience shared by Principal Trainer Mr. Dwipen Boruah was extremely helpful.

-  Arun Choudhary

  • The program was very helpful for me even I am from non- engineering background

- Pinky Upadhyay

  • Quality of training and education, knowledge shared with us beyond the course, efforts and patience of faculties were make us understand the topics very well.

           - Dikshant Gupta

  • Practical approach of explaining all the topics

          -  Atul Aggarwal

  • Personalized attention and required tool were always available

         - Bharat Naik

 

The First Batch of 4 Weeks Professional Advantage Course Concluded

The First Batch of 4 Weeks Professional Advantage Course on Solar Photovoltaic (PV) Systems Design, Installation & Maintenance Ended on 28th April 2017. The course covered detailed technical information and step-by-step methodology for design, installation, testing, commissioning and maintenance of grid-connected and off-grid solar PV systems. The course was attended by engineers, professionals and entrepreneurs from different states of India, Netherlands and Saudi Arabia.

 Screen Shot 2017-05-01 at 6.10.00 PM

What did the participants like most about the programme

  •     

 

  • Study material is excellent. The questions of the exercise & exams were best and this exam, solved my queries - Mr. Sanket Warude    
  • The study materials (books and online materials) - Mohamed Elgozoli 
  • The study material, exercises & assessment - Hamid Al Said
  • The curriculum of the program was compiled very well. It is very much helpful in giving a good understanding of PV system - Aditya Shah           
  • This program gives overall structure, view about solar PV grid connected & standalone system. The design task for off-grid and grid connected rooftop projects are the best - S. Rajesh Kumar    
  • PPT Presentation – Shivam Singh

GSES India Prepared RE Toolkit for Legislators for Local Area Development

GSES India prepared Renewable Energy Local Area Development toolkit for ligislators for local area development. The toolkit has been developed to help the legislators organize a renewable energy plan in their respective constituencies. The toolkit highlights the importance of clean and renewable energy technologies at the local level, and provides comprehensive information and details on implementing renewable energy projects.

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3 Days Renewable Energy Project Management Course Concluded

GSES India conducted 3 days Renewable Energy Project Management Course on 20-22 April 2017. The course focus was on feasibility and planning, design and development and project management for rooftop and MW scale solar power projects.  The course was attended by engineers, professionals and entrepreneurs from different states of India and The Republic of Zimbabwe.  

 

Screen Shot 2017-04-23 at 11.14.14 AM

 

What did the participants like most about the programme

Way of communication to a non-technical person to understand technical issues was very effective.  Demosntration equipment and videos and practicals were very helpful. 

 - Mr. Uttam Kr. Saxena, Lucknow 

Very helpful for new startup and also quality improvement for experienced.

- Mr. Mithilesh Kumar, NISE, Gurgaon

Ground level experience sharing with theory

-  Mr. Shailendra sharma, Delhi

Participation in the group, Display of tools and their demonstration was indeed an eye opener.

 - Mr. Julius Mapipi, Zimbawe 

Depth of the course, quality of installation, structure of course very useful and insightful instructor.

- Mr. Bhardwaz Bhagawati, Guwahati

Project design and development and project feasibility and planning part.

- Mr. Kamlesh Kumar, MECON, Ranchi

GSES India to present at Intersolar 2014

Dwipen Boruah, Managing Director of GSES India, will be presenting at Intersolar 2014 in the Bombay Exhibition Centre, Mumbai, India on Thursday 20 November 2014. His presentation, 'Quality Framework to Ensure Manpower', will be held in Hall 6, Auditorium 1, from 3:40pm to 4:00pm (see the program here).

Intersolar India is India’s largest exhibition and conference for the solar industry and, as a leading industry platform, focuses on the areas of photovoltaics, PV production technologies, energy storage and solar thermal technologies.

See Dwipen's biography on the Intersolar website here, & read more about the conference here.

Renewable Energy and Alternate Fuels

GSES India is proud to be associated with the Delhi Technological University (DTU) faculty development program on Renewable Energy and Alternate Fuels (REAF-2014), which will be held from June 16th to June 20th, 2014.

The program will cover:

  • Renewable Power Sources and their Technologies 
  • Alternative Fuels for Transportation 
  • Energy Efficiency, auditing and conservation 
  • Solid and Liquid Waste Management 
  • Wind and Small Hydro Energy Systems 
  • Solar Air Heating Systems and their Applications in Drying of Agricultural and Industrial products. 
  • Solar water heating systems and their domestic and Industrial applications. 
  • Concentrated Solar Thermal for steam generation and their applications for cooking and Power Generation. 
  • Solar Refrigeration and Air-conditioning 
  • Solar furnace 
  • Solar Photovoltaic, Balance of systems, Energy Storage, Battery sizing, off grid and on grid PV applications. 
  • Overview of Solar Design Simulation Software for PV & Thermal 
For more information, please see the brochure linked below:

http://www.dce.edu/web/Sections/Specials/Programmes/FDP/FDP_on_RE_Brochure.pdf

Event: Solar Tech India Conference 2014

GSES India is delighted to be speaking at the Solar Tech India Conference 2014, which will be held in New Delhi, India, 22–23 July 2014.

Dwipen Boruah, Managing Director of GSES India, will give a presentation on Best practices for design and installations during Session V: Best EPC and O&M practices and novel solutions for solar energy industry in India (16:30–17:30) on the first day of the conference (Monday 22 July).

For more information, and to register for the conference, please visit the event website below:

http://www.greenworldconferences.com/produkt_104_solartech_india_2014.htm

SolarTech India 2014
22–23 July 2014

The Leela Ambience Gurgaon Hotel & Residences
Ambience Island, NH8
Gurgaon 122 002
Delhi - N.C.R, India

Metering 101: Understanding metering for rooftop PV systems

Amidst all the action around grid connected rooftop PV systems, it is important to understand the type of metering and how that would impact your generation based incentives. This article aims to provide some clarity on the topic.

The type of meter that will be installed with a grid-connected PV system will depend on the purchasing agreement with the electricity distributor. Two types of widely used metering arrangements are net metering and gross metering:

1. Net Metering

In net metering arrangement, the meter is allowed to operate in both directions. The electricity produced by the PV system (Sg) either provides power directly to the loads or is exported to the grid making the meter rotate backwards, reducing the actual number of units consumed as counted by the meter (Figure 1.1). 

When information is required on both the export and import electricity, a dual metering system is used. In this arrangement two mechanical meters can be installed with i-dents that only allow them to operate (or rotate) in one direction only (Figure 1.2). In this arrangement, the export meter will record the amount of electricity generated by the PV system that is exported to the grid during the day, while the import meter will record the exact amount of electricity that is consumed from the grid. By setting the export price of generated electricity at appropriate levels, users can be incentivized to increase self-consumption.

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Figure 1.1

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Figure 1.2

2. Gross Metering

This type of metering measures the generation and import of your electricity separately. By metering the total number of solar units of generated and total number of units consumed, this method allows the utility to charge the customers separately for import, generation and net consumption and if required, even at different rates. This is imposed by having two separate meters or using dual metering (dual-element electronic import and export meter; Figure 2). However, in this type of configuration, all of the energy generated is exported to the grid and user has no incentive to increase self-consumption.

 alt

Figure 2

 

Learn about more such topics, best practices and international standards in GSES ‘Grid Connected PV Systems Design’ online course or read more in GSES ‘Grid Connected PV Systems Design and Installation’ Handbook. Visit www.gses.in/training or www.gses.in/publications for details.

Buy now using your credit or debit card on the GSES online shop (www.gses.in/shop).

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Copyright GSES India Sustainable Energy Pvt. Ltd 2013

Understanding Earthing

Recent updates in the PV array installation standards and best practices have led to questions about the types of earthing and bonding in photovoltaic systems. This article aims to clarify what is meant then terms like earthing and bonding are used, and to briefly explain why each of these methods is needed.

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Earthing possibilities/Types of Earthing?

The following options for earthing or bonding of parts of a PV array exist: 

  1. Functional earthing of conductive non-current carrying parts. 
  2. Equipotential bonding to avoid uneven potentials across the installation.
  3. Earthing for lightening protection.
  4. Functional earthing of one current carrying pole (conductor) of the PV array.

When is Functional Earthing implemented?

Functional earthing whether as per part (a) or (d) is required when the DC voltage of the PV system is above the Decisive Voltage Classification (DVC) - A category i.e.? 60V, as per IEC 62548.

Why functional earthing is implemented?

Some modules require functional earthing (as part (d) above) so that they operate correctly (performance) or so that they do not corrode internally. Thin film modules generally need to be negatively earthed, to prevent ‘bar-graph’ corrosion inside the module. Back-contact modules (i.e. Sunpower) need to be positively earthed to achieve their rated efficiency (See figure). 

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Functional earthing (as per part (a) above) and equipotential bonding are implemented to allow for better detection of leakage paths to Earth and to prevent electric shock.

What is Equipotential Bonding?

In the case of PV arrays, there are two forms of equipotential bonding:

  • Main equipotential bonding: It is the connection of exposed conductive parts to the main earthing terminal.
  • Supplementary equipotential bonding: It is the connection of exposed conductive parts to exposed conductive parts and/or extraneous conductive parts with a purpose of keeping the voltage in exposed conductive arts sufficiently low.

This conductor is then connected back to the earth in the MEN system, and must be a minimum of 6mm2 (as per IEC 62548).

Why do you need Equipotential Bonding?

When a PV array is connected to a PCE (especially transformerless), high frequency switching occurs within the inverter and can cause a small AC-like fluctuation in the array cables. The array cables are effectively capacitively coupled to the module frames, and over time this induces a voltage on the module frames and hence chances of electrical shock. To eliminate this voltage any array connected to a PCE needs to have equipotential bonding on all array frames and mounting rails.

What configurations are NOT recommended?

It is not recommended to connect a functionally earthed array (as per part (d)) to a transformerless (non-isolated) inverter. The configuration is not recommended due to the high probability that the inverter will introduce direct current into the AC electricity grid.

 

Learn about more such topics, best practices and international standards in GSES ‘Grid Connected PV Systems Design’ online course or read more in GSES ‘Grid Connected PV Systems Design and Installation’ Handbook. Visit www.gses.in/training or www.gses.in/publications for details.

Buy now using your credit or debit card on the GSES online shop (www.gses.in/shop).

Follow us on Facebook, Twitter and LinkedIn for more such updates.

Copyright GSES India Sustainable Energy Pvt. Ltd 2013

DC Circuit Breakers vs AC Circuit Breakers

 

Source: Ali@gwc.org.uk (wikipedia)

 

1. Actuator lever – used to manually trip and reset the circuit breaker
2. Actuator mechanism – forces the contacts together or apart
3. Contacts – Allow current when touching and break the current when moved apart
4. Terminals
5. Bimetallic strip
6. Calibration screw – allows the manufacturer to precisely adjust the trip current of the device after assembly
7. Solenoid
8. Arc divider / extinguisher

Source: http://en.wikipedia.org/wiki/Circuit_breaker

Always wondered why DC circuit breakers are/should be used with solar PV systems when AC circuit breakers are less expensive and more readily available?!

Here’s why:

In AC circuits (regular household circuits), the voltage source changes the polarity of its output regularly. In India, this happens 100 times per second. By contrast, in DC circuits, the current flow is unidirectional due to the fixed polarity of the voltage source. This leads to undisrupted, longer and sustainable arcs in DC circuits (the reason why arc welding machines use DC current and not AC current). See DC arcs in action here:

Source: RISE

While breaking a DC circuit, it is easy to form such arcs, and if they are not extinguished in time they lead to device overheating and ultimately to fire. AC circuit breakers are not equipped well enough to deal with such arcs, whereas DC circuit breakers have special arc chutes to capture arcs and extinguish them safely, hence they are highly recommended. See what happens when AC circuit breakers are used in DC circuits or when safety devices are under-rated:

Source: RISE

Learn about more such best practices in the GSES online course Grid Connected PV System Design, or read more in GSES' Grid Connected PV Systems: Design and Installation Handbook. Visit www.gses.in/training or www.gses.in/publications for details.

Follow us on FacebookTwitter and LinkedIn for more such updates.