Solar & System Control
May 28, 2020 20:12:41 GMT
Post by Kanaga Gnana on May 28, 2020 20:12:41 GMT
THE THEORY OF SYSTEM CONTROL MAINTAINING THE SYSTEM WITH LOLP CONCEPT IS GONE.
DISTRIBUTION WILL HAVE TO MANAGE THE LOAD WITHIN ITS REGION
THERE WILL BE MORE PROSUMERS AND THE LOAD CAN BE CONTROLED FROM DISTRIBUTION CENTERS.
I am referring to the Sri Lankan system which has already so much of redundant costly almost stranded assets like the Coal power plant and Combined cycle plant to whether with a large amount of Heavy fuel or Fuel oil fired Diesel cycle engine plants when that curve shown is prepared.
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The role of the distribution network operator (DNO) is no longer only to maintain the network and to keep the power
on. It is also to THINK SMARTER and get more out of the network to reduce costly new infrastructure, analyse and respond to shifts in customer behaviour and help customers in fuel poverty.” { No point only working out the LOLP calculations) Try an run the Grid SMARTLY is the Modern technique"
“We may also see the increase of peer-to-peer electricity trading which means that generators and consumers can trade directly with each other. We expect soon to see the decline of the linear, top-down relationship between generators, network operators and customers and the rise of a de-centralised, multifaceted community of power.” “As energy exchanges become more localised, distribution network operators like us are likely to evolve into distribution system operators to ensure the system is properly coordinated to deliver secure and affordable electricity supply.” “In the future, a combination of substation monitoring installed on our network, combined with smart meters, smart appliances and analytics will help to ensure that the network stays within safe limits and that we continue to provide a reliable power supply as well as cheaper and quicker connections for our customers.”
image.png
Hope you know that CEB has already installed SMART meters and these meters are now manufactured by LECO locally.
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WITH RESPECT TO the FAMOUS QUESTION - WHAT HAPPENS ON CONTINUOUS RAINY DAYS WITH NO SUN
My answer is follows
IN SRI LANKA - The existing 900 MW Coal plant even though keep failing will be there for another 20 to 30 years
Two LNG plants awards are already made each 300 MW will be available in 1.5 years. And we may get our own LNG from Mannar for use for power Generation THE COMBINED CYCLE PLANT WILL ALSO GET CONVERTED TO LNG
Our system has enough Hydro also. ARE YOU STILL TALKING ABOUT PAKISTAN AND TALKING OF THAT COUNTRY SITUATION?
Next, the problem of what happens when there is no sun for few days is we use these existing power plants together with already contracted Private power plants some are with 20-year contracts and our own Heavy fuel operated Diesel plants which will last another 15 years as moving parts get replaced. They are as good as new when such replacements take place.
Please note my comments are relative to our CEB system in Sri Lanka
We have large number of generation assets already in place. If we do not use them they will become stranded assets.
The very latest on solar is that the Solar Modules can generate almost 25% capacity even in the nights or when there is cloud or rain for few days Please check below.
Anti-Solar Panels A photovoltaic cell that works at night
As made clear by their name, these anti-solar panels work in a way opposite to traditional ones. Whereas current versions draw energy coming from the sun, anti-solar panels use heat radiating off the Earth's surface.
Traditional solar panels use photovoltaic to absorb photons from the sun's radiation, which the system then uses to generate an electric charge. They can draw in this radiation because they're cold compared to the sun. Since heat always moves to an area of lower temperature, it will pass into the solar panels.
Anti-solar panels work according to the same basic principle but in reverse. Air grows colder at night, so the heat radiates from the Earth's surface — which warmed during the day — toward space. In a phenomenon known as radiative cooling, this heat radiates in the form of infrared light, which these new devices can use to generate electricity.
Radiative cooling is already in use in other applications. Researchers have looked into using the process to cool homes more sustainably. However, instead of moving heat to make an area more comfortable, anti-solar panels do it to harvest energy.
This process doesn't equal the amount of energy generated during the day. The researchers estimate that the devices could produce around 25% of the electricity that traditional solar panels do in the day. While this number may seem small by itself, it represents a sizeable increase in energy overall, since current systems don't operate at all during the night.
Anti-solar panels could increase solar farm energy production by 12%, according to the paper. As technology develops, this number could grow. Even if it doesn't, any rise in the efficiency of alternative energy can be advantageous.
www.sciencedaily.com/releases/2020/01/200129174512.htm
Tandem solar cell world record
A special branch in the famous NREL-chart for solar cell world records refers to a newly developed tandem solar cell. The world-record cell combines the semiconductors perovskite and CIGS to a monolithic 'two-terminal' tandem cell. Due to the thin-film technologies used, such tandem cells survive much longer in space and can even be produced on flexible films. The new tandem cell achieves a certified efficiency of 24.16 percent.
www.sciencedaily.com/releases/2020/04/200414122758.htm
Perovskite/silicon tandem solar cells approaching 30% efficiency in lab
Scientists at the Helmholtz Zentrum Berlin have taken back the world efficiency record for a perovskite/silicon tandem solar cell, achieving 29.15% with a device measuring 1cm². The record has been confirmed by Fraunhofer ISE, and according to HZB, this means that the 30% efficiency mark is within reach.
pv-magazine-usa.com/2020/01/31/tandem-cells-approaching-30-efficiency/
Behind the numbers: The rapidly falling LCOE of battery storage
The cost of battery energy storage has continued on its trajectory downwards, making it more and more competitive with fossil fuels. That in itself will come as no surprise to many in the industry. As we wrote last week, analysis from BloombergNEF (BNEF) highlights that for applications requiring two hours of energy, batteries are beating gas peaker plants. While the 2019 LCOE benchmark for lithium-ion battery storage hit US$187 per megawatt-hour (MWh) already threatening coal and gas and representing a fall of 76% since 2012, by the first quarter of this year, the figure had dropped even further and now stands at US$150 per megawatt-hour for battery storage with four hours’ discharge duration.
Andy Colthorpe spoke to Tifenn Brandily, BNEF’s lead author of the latest LCOE report, which covers solar, wind and more than 20 other technologies including battery storage from 47 regional markets around the world.
www.energy-storage.news/blogs/behind-the-numbers-the-rapidly-falling-lcoe-of-battery-storage?fbclid=IwAR1Q3PcN9l5w4OPNWyTVZwdoQKSdcvZ-UMn7jboUwyMih3E7AtAXje4Tv8I
DISTRIBUTION WILL HAVE TO MANAGE THE LOAD WITHIN ITS REGION
THERE WILL BE MORE PROSUMERS AND THE LOAD CAN BE CONTROLED FROM DISTRIBUTION CENTERS.
I am referring to the Sri Lankan system which has already so much of redundant costly almost stranded assets like the Coal power plant and Combined cycle plant to whether with a large amount of Heavy fuel or Fuel oil fired Diesel cycle engine plants when that curve shown is prepared.
--------------------------------------------------------------------------------------------------------------------------
The role of the distribution network operator (DNO) is no longer only to maintain the network and to keep the power
on. It is also to THINK SMARTER and get more out of the network to reduce costly new infrastructure, analyse and respond to shifts in customer behaviour and help customers in fuel poverty.” { No point only working out the LOLP calculations) Try an run the Grid SMARTLY is the Modern technique"
“We may also see the increase of peer-to-peer electricity trading which means that generators and consumers can trade directly with each other. We expect soon to see the decline of the linear, top-down relationship between generators, network operators and customers and the rise of a de-centralised, multifaceted community of power.” “As energy exchanges become more localised, distribution network operators like us are likely to evolve into distribution system operators to ensure the system is properly coordinated to deliver secure and affordable electricity supply.” “In the future, a combination of substation monitoring installed on our network, combined with smart meters, smart appliances and analytics will help to ensure that the network stays within safe limits and that we continue to provide a reliable power supply as well as cheaper and quicker connections for our customers.”
image.png
Hope you know that CEB has already installed SMART meters and these meters are now manufactured by LECO locally.
----------------------------------------------------------------------------------------------------------------------------------------------------
WITH RESPECT TO the FAMOUS QUESTION - WHAT HAPPENS ON CONTINUOUS RAINY DAYS WITH NO SUN
My answer is follows
IN SRI LANKA - The existing 900 MW Coal plant even though keep failing will be there for another 20 to 30 years
Two LNG plants awards are already made each 300 MW will be available in 1.5 years. And we may get our own LNG from Mannar for use for power Generation THE COMBINED CYCLE PLANT WILL ALSO GET CONVERTED TO LNG
Our system has enough Hydro also. ARE YOU STILL TALKING ABOUT PAKISTAN AND TALKING OF THAT COUNTRY SITUATION?
Next, the problem of what happens when there is no sun for few days is we use these existing power plants together with already contracted Private power plants some are with 20-year contracts and our own Heavy fuel operated Diesel plants which will last another 15 years as moving parts get replaced. They are as good as new when such replacements take place.
Please note my comments are relative to our CEB system in Sri Lanka
We have large number of generation assets already in place. If we do not use them they will become stranded assets.
The very latest on solar is that the Solar Modules can generate almost 25% capacity even in the nights or when there is cloud or rain for few days Please check below.
Anti-Solar Panels A photovoltaic cell that works at night
As made clear by their name, these anti-solar panels work in a way opposite to traditional ones. Whereas current versions draw energy coming from the sun, anti-solar panels use heat radiating off the Earth's surface.
Traditional solar panels use photovoltaic to absorb photons from the sun's radiation, which the system then uses to generate an electric charge. They can draw in this radiation because they're cold compared to the sun. Since heat always moves to an area of lower temperature, it will pass into the solar panels.
Anti-solar panels work according to the same basic principle but in reverse. Air grows colder at night, so the heat radiates from the Earth's surface — which warmed during the day — toward space. In a phenomenon known as radiative cooling, this heat radiates in the form of infrared light, which these new devices can use to generate electricity.
Radiative cooling is already in use in other applications. Researchers have looked into using the process to cool homes more sustainably. However, instead of moving heat to make an area more comfortable, anti-solar panels do it to harvest energy.
This process doesn't equal the amount of energy generated during the day. The researchers estimate that the devices could produce around 25% of the electricity that traditional solar panels do in the day. While this number may seem small by itself, it represents a sizeable increase in energy overall, since current systems don't operate at all during the night.
Anti-solar panels could increase solar farm energy production by 12%, according to the paper. As technology develops, this number could grow. Even if it doesn't, any rise in the efficiency of alternative energy can be advantageous.
www.sciencedaily.com/releases/2020/01/200129174512.htm
Tandem solar cell world record
A special branch in the famous NREL-chart for solar cell world records refers to a newly developed tandem solar cell. The world-record cell combines the semiconductors perovskite and CIGS to a monolithic 'two-terminal' tandem cell. Due to the thin-film technologies used, such tandem cells survive much longer in space and can even be produced on flexible films. The new tandem cell achieves a certified efficiency of 24.16 percent.
www.sciencedaily.com/releases/2020/04/200414122758.htm
Perovskite/silicon tandem solar cells approaching 30% efficiency in lab
Scientists at the Helmholtz Zentrum Berlin have taken back the world efficiency record for a perovskite/silicon tandem solar cell, achieving 29.15% with a device measuring 1cm². The record has been confirmed by Fraunhofer ISE, and according to HZB, this means that the 30% efficiency mark is within reach.
pv-magazine-usa.com/2020/01/31/tandem-cells-approaching-30-efficiency/
Behind the numbers: The rapidly falling LCOE of battery storage
The cost of battery energy storage has continued on its trajectory downwards, making it more and more competitive with fossil fuels. That in itself will come as no surprise to many in the industry. As we wrote last week, analysis from BloombergNEF (BNEF) highlights that for applications requiring two hours of energy, batteries are beating gas peaker plants. While the 2019 LCOE benchmark for lithium-ion battery storage hit US$187 per megawatt-hour (MWh) already threatening coal and gas and representing a fall of 76% since 2012, by the first quarter of this year, the figure had dropped even further and now stands at US$150 per megawatt-hour for battery storage with four hours’ discharge duration.
Andy Colthorpe spoke to Tifenn Brandily, BNEF’s lead author of the latest LCOE report, which covers solar, wind and more than 20 other technologies including battery storage from 47 regional markets around the world.
www.energy-storage.news/blogs/behind-the-numbers-the-rapidly-falling-lcoe-of-battery-storage?fbclid=IwAR1Q3PcN9l5w4OPNWyTVZwdoQKSdcvZ-UMn7jboUwyMih3E7AtAXje4Tv8I
