Tags Posts tagged with "electrical grid"

electrical grid

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Turboden designed and manufactured a unique single turbine of 16 MW electrical power to be operated in a geothermal power plant in Velika Ciglena (Croatia) by Geoen – MB Holding. The Velika Ciglena project, which will start operating in 2017, will exploit steam and hot water at 170 °C to produce electricity to feed the local power grid.

The region of Velika Ciglena is situated in Bjelovar subdepression, the north east of Croatia. The reservoir was discovered in 1990 by INA-Naftaplin, during an underground exploration for oil. The oil was never found, instead, a promising potential for geothermal energy was discovered.

The ORC turbogenerator with a 5-stage axial turbine, designed and manufactured by Turboden, optimizes the performance with a rotation speed of 1,500 rpm, while guaranteeing minimal vibration values (around 1mm/second) and smooth operation. Thanks to the 5 axial stages of the turbine, the plant will grant a highly efficient behavior in all the environmental conditions as well as at different input levels.

The single pressure level cycle selected by Turboden is the optimum choice according to best match of heat exchange curves and simplest plant configuration. Thanks to this, it is possible to achieve 4% higher net power output with a saving of 8% capex, compared to the possible alternative solutions.

Velika Ciglena project, with the cutting-edge 16 MW ORC turbine, proves the technological reference of Turboden as main producer of large binary ORC plants, while the latest geothermal ORC plants delivered from Europe to Japan, confirm the success of Turboden with field proven performances and reliability.

Schneider Electric has launched Smartlink ELEC, a system designed for the owners and managers of small companies whose activity relies on devices connected to the electrical grid. It is essential for this type of business to have access to their electrical installation in order to monitor it and detect any possible faults, so as to avoid direct repercussions on the operation of their company. The Smartlink ELEC solution is able to connect to and control the electrical grid from anywhere via a free mobile app, enabling the management of the devices and the development of the business.

Smartlink ELEC converts an electrical distribution switchboard into a communication system, by collecting information on the installation and sending the data to the cloud, where it is processed and analysed. The data is then sent to the mobile, where the user can clearly and easily view it and take the necessary steps to manage their business as efficiently as possible.

This system requires no complicated installation or special programming. All that has to be done is install the Acti 9 Smartlink ELEC device in the switchboard and connect it to the grid via an Ethernet cable to a router.

The Smartlink ELEC device is able to perform the following actions:

  • 24/7 real time connection to the electrical installation, for total peace of mind.
  • Visualising and monitoring the status of the electrical system.
  • Receiving a warning if any critical electrical device is unexpectedly disconnected.
  • Receiving a notification in the event of anomalies, such as an increase in temperature levels, humidity or CO2 over and above established standards.
  • Monitoring the energy consumption.
  • Remotely controlling the electrical switchgear.
  • Increasing security and energy efficiency.
  • Remotely reconnecting the electrical protection activated to return the device to its normal status.
  • Remotely disconnecting the lighting, heating, illuminated signs, neon signage, etc., when not needed.
  • Remotely programming the schedule for the lighting and other devices to cover actual demand.

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The range of Eiffage Energía’s activities outside Spain started when it began the process of internationalisation of its business lines in 2008, with the construction in Amareleja (Portugal) of the most innovative, ever growing, photovoltaic solar plant so far.

Currently, Eiffage has subsidiaries in Mexico and Chile and its presence on the European continent is still unstoppable. Now, it has also just completed its first project in a new continent: Africais now on the map of its activities, a milestone within its electrical infrastructure works demonstrating the company’s good health.

Thus, Eiffage Energía has successfully tackled its first job on African soil in an overseas department belonging to France and located in the Indian Ocean, east of Madagascar: Reunion Island: There it has carried out the expansion of the electricity transmission network of the island through a 66 kV double circuit Simplex line and approximately 44 km of extension.

The implementation of the work entrusted to the company Électricité De France (EDF), was divided into three sections of line that will connect the substation of Saint-Paul and the factory Gol in Saint Louis . The third of these sections, which comprises the Saint-Leu terminal and the factory Gol in Saint Louis, was finally isla-reunion-2awarded to Eiffage Energie Transport et Distribution, its commissioning taking place last Saturday 28 May. Meanwhile, Eiffage Travaux Publics, another of the subsidiaries of the Eiffage Group, has been responsible for all the necessary civil works in the project.

Eiffage Energía’s participation in the expansion of Reunion Island’s electricity network has been the assembling and hoisting with cranes of 45 supports, and by helicopter, the laying of optic fibre and conductors in a total of 12.58 km, for which it has counted on the specialised work and experience of a team of 25 people.

 

Source: Eiffage Energia

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Solar Impulse has already proven that it is possible to produce a stable, 24/7 electricity supply using only renewable energy. ABB, a world leader in power and microgrid technologies, is helping remote communities and islands like Hawaii to meet and sustain their own energy needs by incorporating renewable and clean energy technologies into the power grid.

Powered only by energy from the sun, Solar Impulse will soon begin the second part of its epic 40,000-kilometer flight around the world, taking off from Kalealoa Airport in Hawaii for the mainland United States. The Aloha State is a leader among all 50 states by pledging to power its islands with 100% renewable energy sources by 2045. ABB technology is already helping Hawaii with that goal as a part of Kauai island’s Battery Energy Storage System, which helps to maintain a stable power supply and provides instant backup power in the event of unplanned outages.

 

“One of our goals for this historic round-the-world journey and for our technology partnership with Solar Impulse is to demonstrate that you can separate economic growth from environmental impacts with help from smarter and more sustainable technologies,” said Greg Scheu, president, Americas region, ABB. “Renewable energy, microgrids, battery storage, higher efficiency standards – these all show that we can power the world without consuming the earth.”

“We had to build an aircraft with an extremely efficient grid: from the electric motors to the batteries and the management system,” said Solar Impulse pilot and CEO, André Borschberg. “What we have is a system that captures its own energy, converts it into electricity, and stores it and manages its consumption in a sustainable way. This is exactly what ABB is doing on the ground with its distributed energy resources or microgrids.”

“If Solar Impulse can fly day and night around the world with no fossil fuel, it demonstrates that these technologies are now mature and ready for the market so everyone can use them,” said Solar Impulse pilot and chairman, Bertrand Piccard. “ABB gives credibility to what we are doing, because it is doing it on the ground.”

 

The new RWE Innogy Aersa Control Centre that has been certified to act as an interface with CECRE (the Renewable Energy Control Centre) since February 2015, connects RWE’s 20 renewable energy facilities with REE, the Spanish Electricity Grid. As a result, it ensures that wind farms, in addition to hydropower and solar plants, can inject the energy generated by its 460 MW installed safely and with
no penalties. Green Eagle Solutions, a provider of software solutions for renewable energy companies, has collaborated with RWE in the development of this Control Centre, meeting the high standards of quality and safety required by RWE. This centre uses CompactSCADA® technology to integrate power
generation facilities that need to be integrated in a Control Centre to communicate with REE’s CECRE.

RWE has extensive experience in the generation of renewable energy in Europe and has operated in Spain since 2002. Thanks to the processes and the set up developed over these years, the company is now putting its capabilities to work for third parties. The services offered go way beyond being a mere Dispatching Agent with REE, ensuring greater efficiency and value of the operations undertaken by renewable energy plants.

This is possible thanks to a flexible system that adapts to the needs of the installation and not vice
versa, as often happens. The system is furthermore very robust and stable as demonstrated by the fact that no incident has occurred with the system since its launch. Read more…

Article published in: FuturENERGY January-February 2016

La Unión Europea ha financiado con 17 M€ esta iniciativa que agrupa a 25 socios de 13 países para hacer frente a la estabilidad, calidad y control de la red eléctrica europea.

25 consortium partners from 13 European countries, including twelve transmission system operators (TSO), as well as universities and research institutions, jointly launched the MIGRATE project in Brussels on 20 January. The project name is derived from the research topic “Massive InteGRATion of power Electronic devices”. The aim is to devise various approaches to solving key technical issues relating to grid stability, supply quality, and control and security of supply that arise owing to the challenge posed by the ever-increasing use of renewable energy feed-in sources. The project, which is designed to run for four years, is receiving funding of roughly 17 million euros from the EU, and it forms part of the EU’s “Horizon 2020” framework programme for research and innovation.

“The question that has to be examined is: how much power electronics can the grid cope with?”, said Mariana Stantcheva, the European Commission’s INEA Project Officer, at the kick-off meeting in Brussels.
This is because, in future, the European integrated network will at certain points in time face new challenges at various locations due to the large amounts of electricity fed into it from wind and solar sources. Both electricity production on the one hand – due to the increasing share of renewable energy – but also consumption on the other hand – owing to the implementation of energy efficiency systems, for example – will increasingly be linked to the electricity grid through power electronics.
These effects are posing technical challenges, particularly for grid operators in relation to grid management. This is due to the fact that a power station generator, for instance, lacks the inertia that is needed to guarantee the necessary frequency stability at 50 Hertz.

In Brussels, MIGRATE project manager Andreas Menze from TenneT TSO presented the main focuses of the investigations which are becoming essential in light of the major CO2 reductions in the energy system of the future:

• Maximisation of the amount of Renewable Energy Sources installed in the system while keeping the system stable
• Anticipation of future potential problems and challenges
• Clarification of the need of new control/protection schemes and possibly new connection rules to the grid

These issues are broken down into eight work packages and shared out between different workgroups. A key aim is to develop and validate technology-based solutions in the context of a pan-European electricity system, which is subject to a rapid increase in power electronics, both in relation to generation and consumption.

This overarching goal is split into two components combining two time horizons:
In the short to medium term, incremental technology-based solutions are needed to operate the existing electric HVAC system configuration with a growing penetration of PE-connected generation and consumption, based on novel methods and tools.

In the long term, breakthrough technology-based solutions are needed to manage a transition towards an HVAC electric system where all generation and consumption is connected via 100% PE, based on innovative control algorithms together with new grid connection standards.

The workgroups meet regularly to share their work results. The next meeting of the Executive Board, on which all the TSOs involved in the project are represented, will be held in the summer so that the initial results of the investigations can be presented and the next steps to be taken can be agreed.

In the meantime, it is not only the consortium partners who will actively work on their assigned tasks – other transmission system operators and research groups outside the project organisation can provide their input into the subject matter if they wish to do so. A so-called reference group will shortly be set up for this purpose, which is intended as a platform for inputting and sharing ideas. Any parties that are interested in the project can get in touch with the coordinator, TenneT, by sending an email to: migrate@tennet.eu.

Siemens has been awarded an order from the transmission grid operator Amprion for the supply, installation and commissioning of a reactive power compensation system for stabilizing the power supply grid in the Greater Frankfurt Area. In navigating through the energy turnaround, this is how Amprion will tackle the challenges facing the power grid created by an ever-increasing number of fluctuating renewable energy sources feeding power into the grid. The grid operator will use the reactive power compensation system for dynamic voltage stabilization of the transmission grid.

The order includes a latest-generation static VAR compensation system SVC Plus, which has undergone further development by Siemens, among other things to minimize the environmental impact of the system, such as noise emissions and reducing the size of the system to a minimum. Siemens will erect the system in Kriftel, a community in the Rhine-Main region located between Frankfurt and Wiesbaden, and will integrate it there into an existing switchgear system. The volume of the order is around EUR 25 million; the system is scheduled to be commissioned at the end of 2017.

The core of SVC Plus, an advanced Statcom (static synchronous compensator), is its multilevel converter technology. By contrast with other self-commutated converter topologies, the voltage waveshape produced by SVC Plus is practically sinusoidal by virtue of the multilevel technology. This makes the low-frequency harmonic filters often used in earlier solutions superfluous and substantially reduces the space requirements for the overall unit.

The power converter is based on a modular topology. Each converter branch consists of series-connected insulated gate bipolar transistor modules (IGBT power modules). The SVC Plus system for Amprion is designed for a rated capacity of +/- 300 MVAr and laid out in several power converters connected in parallel. Redundant power modules are included in the phases of each converter branch. In the rare event of a fault, these would continue to ensure operation at full rated power without a forced shutdown. Replacement of defective components could then be postponed until the next scheduled maintenance. The average availability for an SVC Plus system therefore far exceeds 99 percent. Siemens has received orders worldwide for more than 50 SVC Plus systems in the last four years alone.

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Today, access to renewable energies is at the core of the energy models of many African countries and is a key factor in enabling these countries to develop. In this context, Ingeteam made the decision to collaborate with Synergie Solaire and help carry out development aid projects by commissioning solar systems, in cooperation with a number of non-governmental organizations. In this specific case, Lumières Partagées was the organization responsible for implementing the project.

Given the fact that Benin, an African country located to the west of Nigeria, has great solar potential, this technology was selected in order to make the most use of this available resource and to obtain a continuous, long-lasting power supply through the installation of a battery bank. This is in contrast to the national power grid, which is unstable and even non-existent in some regions of the country.

The project is located in a village called Kotopounga, in northern Benin, close to the border with Togo. Thanks to the generation of solar energy and to the battery storage system, the hospital is now less dependent on a grid suffering constant power outages. As a result, patients can now receive improved healthcare.Commissioning_baja

Ingeteam was invited to put its knowledge and technology to the service of this humanitarian project: the solar electrification of the hospital in Kotopounga. The company, through its French subsidiary, took the decision to collaborate by donating the material required to connect an energy storage system associated with a PV system. In this case, Ingeteam donated a PV inverter, a battery inverter and an electrical protection cabinet. Furthermore, Ingeteam sent one of its French engineers to carry out the commissioning of the system.

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Rolls-Royce is so far the only manufacturer of diesel gensets in Germany to have been awarded accreditation by the BDEW (German Association of Energy & Water Industries). The certificate applies to MTU Onsite Energy diesel gensets in the 600 to 3,200 kWe power range, which meet all of the association’s requirements with respect to the German grid code. The operators of these onsite energy power plants are therefore authorized to feed the power they generate into the public power grid. The certified products are based on proven standard gensets from MTU based on Series 2000 and 4000 engines whose electrical and electronic components have been configured and fine-tuned according to the special requirements of the grid code. M.O.E. Moeller Operating Engineering GmbH was engaged to provide verification.

Germany has played a pioneering role in the promotion of grid codes, with large power stations being closed down, there has been significant growth in distributed power generation based on wind, water and solar energy. This transition requires new ways of thinking and new technologies. The now accredited capabilities of the gensets for contributing to frequency and voltage stability, and for helping to restore the power supply in the event of a black-out, generally enhance power grid reliability.

The certified gensets must be able to perform two essential tasks: during normal power grid operation, they must support the grid operator in maintaining quality criteria such as power grid voltage, and a grid frequency of 50 Hz. In the event of a power grid disruption, they must be capable of generating power continuously in order to prevent a black-out.

One of the first BDEW-certified diesel gensets from MTU Onsite Energy has now been installed and commissioned in an industrial bakery in Germany. It is based on an 18-cylinder Series 2000 diesel engine and delivers 1,000 kW. Since mid-September, it has been used as a back-up in the event of a power outage for safeguarding the production of frozen bakery products. When power demand peaks, it also switches in to grid-parallel operation. This occurs for example, at midday, when production is running at full swing, and an uninterrupted flow of power is needed for lighting, conveyors, refrigerators, the frost plant, and for regulation and control of the baking lines. To deploy the genset for peak power generation and possibly for operating reserve at a later date, it had to comply with the new grid code requirements set by the German Association of the Energy and Water Industries (BDEW).

Wärtsilä has been contracted to supply a major Flexicycle power plant to Energía del Pacífico S.A. in Acajutla, El Salvador. It will be the largest and most efficient power plant in El Salvador, and the first in Central America to be fired by LNG-based natural gas. The 378 MW installation will feed electricity to the national grid.

The order is estimated to be included in Wärtsilä’s order book in 2016, and the plant completion is scheduled for 2018. The value of the order is approximately EUR 240 million.

As of today, about 50 percent of the 1600 MW generation capacity in El Salvador is based on oil. The new power station will decrease the price of electricity because the fuel, LNG-based natural gas, is cheaper than oil. Natural gas also produces 30 percent less carbon emissions and 99 percent less sulphur dioxide emissions than oil.

The power plant will be the first in Central America to run on LNG-based natural gas. A dedicated LNG import terminal will be built at the same location.

The power plant will comprise nineteen Wärtsilä 50SG engines and a combined cycle steam turbine, producing high fuel efficiency of close to 50 percent. The Dry Flexicycle technology with a closed loop cooling system requires zero water consumption, which is a major benefit in El Salvador which has recently suffered from the worst droughts in 40 years.

Wärtsilä’s installed capacity in Central America and the Caribbean is approximately 4800 MW, and globally 58 GW.

AERZEN
COMEVAL