Self-healing grids and the future of electrical power

20171211

We think nothing of turning on a light or charging our cell phone. These daily activities — and those of a far greater importance — rely on the smooth running of an electrical grid. The U.S. Department of Energy has described the electrical grid as an "interconnected group of power lines and associated equipment." It is used to move electric energy at "high voltage between points of supply" and points where it is either delivered to other electric systems or "transformed to a lower voltage" and sent to consumers. When something goes wrong, the consequences can be considerable. In July 2012, for example, "major grid disturbances" affected large parts of India, leaving hundreds of millions of people without electricity. "Nowadays, we are more reliant on electrical power, so when an outage happens it has a big impact on our daily life," Schneider Electric"s Rob de Jongh told CNBC. The effects of an outage could impact everything from electronic banking and internet access to telephone communication and public transport, he said. "But if you look (at)… hospitals and data centers, where critical power is more important, that could be more dangerous." At the moment, it"s possible for energy suppliers to tell when there"s an outage, but isolating where and what the problem is can be trickier. "In the current situation, the control center can see where a fault is, but it needs to send a technician on site to actually find out which part of the network — if it"s a switch gear or cable — has actually failed," de Jongh said. When the technician does this, he is able to safely sectionalize the area and then try to restore power to customers as quickly as possible, de Jongh said. This, however, can take anywhere between one to four hours, depending on location and the complexity of the grid. Major Dutch utility Stedin is based in Rotterdam, the Netherlands. It serves the city"s main port, a hub of activity. As such, maintaining a reliable grid is incredibly important to both Stedin and the port. Together with Schneider Electric, Stedin has worked on the installation of an underground, "self-healing" network that was inaugurated in 2012. Seven Easergy T200 Remote Terminal Units were installed within a 33-substation loop in Rotterdam. According to U.K. Power Networks, a substation can be used to lower electricity voltage, making it both safer and easier to send electricity to businesses and residential buildings. "If a fault occurs, the T200 units will detect this, they will start communicating with each other," Schneider Electric"s de Jongh said. "What they will do is try to locate the faults using communication diagnostics." When this is done, the units will automatically sectionalize the faults and then, in de Jongh"s words, attempt to safely "re-energize and re-connect the other grid parts so that customers get the energy back as quick as possible." According to Schneider Electric, the impact of the system on customers is considerable. In the case of an outage that may otherwise last two hours, the system slashes the time needed to "re-energize" unaffected parts of the grid to less than 30 seconds.

Ист.: CNBC, Ссылка: https://www.cnbc.com/2017/12/0...
Темы:Энергетика,

Предыдущие:

 20171211 ANDREI MAIOREANU: THE ENERGY STRATEGY WILL MENTION THE MAJOR INVESTMENT PROJECTS OF NATIONAL INTEREST

Ист.:

The final form of the national energy strategy will mention several investment projects, among which the 600 MW of Rovinari and the new Cernavoda nuclear reactors, the state secretary in the Ministry of EnergyAndrei Maioreanu announced in the Keynote Speech opening 5th edition of the energynomics AwardsGala. The official reaffirmed the basic principles for t...
Мета: Andrei Maioreanu, AwardsGala, Romania, nuclear reactors in Cernavoda, National Military Club, Темы: Энергетика, Социум,


 20171127 120,00 new jobs in solar industry, report says

Ист.:

According to a study commissioned by SolarPower Europe, solar is making an "impressive contribution to job and wealth creation in Europe today and in the future". Solar creating socio-economic value The study, which was conducted by EY, assessed the socio-economic contribution of solar to jobs and value added in Europe for 2017 through to 2021. SolarPow...
Мета: SolarPower Europe, Europe, Темы: Энергетика, Транснацики,


 20171128 Solar power in Afghanistan to get $44.76 million boost

Ист.:

The Asian Development Bank (ADB) has approved a $44.76 million grant to finance the construction of a 20-megawatt (MW) on-grid solar photovoltaic (PV) plant in Afghanistan. In an announcement, the ADB said the new facility would boost renewable energy generation and supply in the country, producing at least 43,000 megawatt hours of solar power. Photovolta...
Мета: Asian Development Bank, ADB, Afghanistan, Samuel Tumiwa, International Energy Agency, Темы: Энергетика, Транснацики, Будущее,


По этой же теме:


 20171010 China: dena certifies six new energy-efficient buildings

Ист.:

Pilot projects for energy efficiency in nurseries, office buildings and residential buildings / 70 per cent lower energy consumption than in comparable new buildings The German Energy Agency (dena) has certified six new building projects in China with the highest energy efficiency class A. The buildings consume around 70 per cent less energy than the aver...
Мета: German Energy Agency, China, Center of Science and Technology of Construction, Темы: Энергетика,


 20171103 Every bit counts – Toward an electrified planet

Ист.:

Every bit counts – Toward an electrified planet Since the 2015 G7 summit in Elmau in southern Germany, the world has focused on a common goal: to turn away from fossil energy in favor of electricity as a universal energy source, with the ambition of achieving complete decarbonization by the year 2100. This presents all economies with tremendous chall...
Мета: G7 summit, 3D Model of Energy, Sustainable Energy for All, TenneT, Siemens, Темы: Энергетика, Социум, Будущее,


Следующие:


 20171010 China: dena certifies six new energy-efficient buildings

Ист.:

Pilot projects for energy efficiency in nurseries, office buildings and residential buildings / 70 per cent lower energy consumption than in comparable new buildings The German Energy Agency (dena) has certified six new building projects in China with the highest energy efficiency class A. The buildings consume around 70 per cent less energy than the aver...
Мета: German Energy Agency, China, Center of Science and Technology of Construction, Темы: Энергетика,


 20171103 Every bit counts – Toward an electrified planet

Ист.:

Every bit counts – Toward an electrified planet Since the 2015 G7 summit in Elmau in southern Germany, the world has focused on a common goal: to turn away from fossil energy in favor of electricity as a universal energy source, with the ambition of achieving complete decarbonization by the year 2100. This presents all economies with tremendous chall...
Мета: G7 summit, 3D Model of Energy, Sustainable Energy for All, TenneT, Siemens, Темы: Энергетика, Социум, Будущее,