Agency: European Commission | Branch: FP7 | Program: CP | Phase: ENERGY.2013.2.7.1 | Award Amount: 6.23M | Year: 2013
In the recent years due to tremendous development and integration of renewable energy resources in Europe, hydraulic turbines and pump-turbines are key technical components to contribute to renewable energy production and to compensate for the stochastic nature of the variable energy sources, preserving thus the electrical grid stability. As a result, the overarching objective of the project is the enhanced hydropower plant value by extending the flexibility of its operating range, while also improving its long-term availability. More specifically, the project aims to study the hydraulic, mechanical and electrical dynamics of several hydraulic machines configurations fresh and seawater turbines, reversible pump-turbines under an extended range of operations : from overload to deep part load. A two-pronged modelling approach will rely on numerical simulations as well as reduced-scale physical model tests. Upon suitable concurrence between simulations and reduced-scale physical models results, validation will take place on carefully selected physical hydropower plants properly equipped with monitoring systems. To address this ambitious research plan, a consortium has been assembled featuring three leading hydraulic turbines, storage pumps, reversible pump-turbine and electric equipment manufacturers, SME, as well as world-renowned academic institutions. Extensive tests both on both experimental rigs and real power plants will be performed in order to validate the obtained methodological and numerical results.
Power Vision | Date: 2014-11-12
A hydroelectric power plant real-time monitoring system comprising a real-time data acquisition system (11) connected to dedicated sensors positioned in a hydroelectric power plant (2) and configured to acquire in real-time measured power plant data comprising simulation inputs (111), and at least one real-time measured monitored quantity (112). The monitoring system also comprises a real-time simulation system (12) and a real-time diagnostic system (13), whereby the simulation system is configured to receive the measured simulation inputs (111), to simulate in real-time a transient behavior of the hydroelectric power plant based on the measured simulation inputs and to provide in real-time simulated power plant data related to the transient behavior of the power plant and comprising at least one first real-time simulated monitored quantity (122) corresponding to a simulated quantity of the measured monitored quantity (112). The real-time diagnostic system (13) compares the measured monitored quantity with the first simulated monitored quantity (122) to trigger, in case of deviation above a first threshold, a first alarm identifying a first power plant transient behavior problem and/or to compute at least one first output related to the measured quantity (112) and at least one second output related to the first real-time simulated quantity (122) and compare the first output with the second output to trigger, in case of deviation above a second threshold, a first alarm identifying a first power plant transient behavior problem.
Power Vision | Date: 2013-08-10
Power Vision | Date: 2016-05-26
Bracelets; Charms; Clasps for jewelry; Earrings; Hat ornaments of precious metal; Jewelry; Jewelry chains; Key rings of precious metal; Key rings of precious metals; Lockets; Necklaces; Paste jewelry; Rings; Jewelry ornaments; Key chains as jewellery.
Power Vision | Date: 2016-05-26
Abrasive sponges for scrubbing the skin; Cosmetic brushes; Eyebrow brushes; Eyelash formers; Make-up brushes; Make-up removing appliances; Perfume sprayers; Powder puffs; Shaving brushes; Toilet sponges; Applicators sold empty for applying cosmetic lotions for skin; Fitted vanity cases; Lip brushes; Powder compacts; Sponges used for applying make-up.
Platero C.A.,Technical University of Madrid |
Nicolet C.,Power Vision |
Sanchez J.A.,Technical University of Madrid |
Kawkabani B.,Ecole Polytechnique Federale de Lausanne
Renewable Energy | Year: 2014
The integration of wind power in power systems results in a reduction in greenhouse gas emissions. Thus, it has a positive environmental impact. However, the operation of these power systems becomes increasingly complex, owing mainly to random behaviour of the wind.In the case of island power systems, this problem is even more difficult. The traditional solution is to use diesel generators as an alternative power supply. For a wind-only power supply, an energy storage system is required. If the topography of the island makes possible the use of pumped storage hydropower plants, this is, nowadays, the most suitable energy storage system.This paper presents a novel method of Pelton turbine operation with no water flow, as a way to provide fast power injection in the case of an abrupt wind power decrease, or a wind-generator trip. This operation mode allows maximizing wind power penetration in a reliable and efficient way. This method has been validated by computer simulations, and will be tested during the commissioning of a combined wind-pumped storage power plant in an autonomous power system, on a small island. © 2014 Elsevier Ltd.
News Article | April 4, 2007
The announcement of the iPhone generated a metric ton of buzz, not just around around Apple's highly-anticipated entry into the cellphone market but also other smartphone devices such as the Samsung Blackjack and the Motorola Q. Although our readers have shown strong interest in such Internet-friendly devices, widespread adoption still faces a number of challenges. Our quick survey of the marketplace shows that mobile Internet service is priced prohibitively high, and this will likely constitute the major barrier to mobile Internet adoption, even more than the cost of the devices themselves. Unlimited data service cost—the ideal solution for someone who plans to use the Internet extensively via one of these devices—has a somewhat wide range across the major service providers in the US, and depends highly upon which device is being used and on what network. For instance, look at what it costs to use a smartphone from the major carriers with a voice plan. AT&T/Cingular's data plans range from as low as $19.99 per month for the SmartPhone Connect Unlimited Plan (which works with a limited selection of devices) to $39.99 for the PDA Connect Unlimited plan (for other devices, such as the Samsung Blackjack). When added to a voice plan, the total cost (with a 450-minute, $39.99/month plan) comes to somewhere between $60 and $80. T-Mobile Internet can be added onto voice packages for $29.99 for use with a supporting phone—which comes with the added feature of being able to use T-Mobile's WiFi HotSpots anywhere they are offered, with any WiFi device. This brings the total voice + data package with the lowest-available plan (300 minutes for $29.99/month) to $60. Coupled with a 600-minute voice plan for $39.99, the total is $70. Verizon's data plan offerings offer even more simplicity, but some of the highest prices. There is no way to get a data-only plan without voice (on at least one phone), and the prices for both PDA/Smartphone plans and BlackBerry plans are the same. For $79.99 per month, users can get 450 minutes and unlimited data usage. When purchased alone (provided you have voice somewhere on your account), the plans are $45-$50 for unlimited data. Verizon also notes in their contracts that "unlimited" is actually capped at 5GB a month. Other plans are believed to have similar limits on their "unlimited" service. Finally, Sprint's data offerings include the $15 to $25 addition of the Sprint Power Vision packs (with varying levels of multimedia access, but all with unlimited data) to any phone plan with supporting device. Using the 450-minute $39.99 plan, that brings the total price to the $55 to $65 range. Ultimately, users can expect to pay anywhere between $55 and $80 for a data+voice plan. For that price, you get something between "mediocre" and "acceptable" data speeds—depending on what type of network, location, and network congestion at the time of use. But of course, you get the convenience of mobile Internet. Our own sampling of reader opinion leads us to believe that spending an extra $60+ or so every month to use a device that can access mobile Internet is still too pricey to be attractive to savvy users. It's no coincidence that many users on these mobile Internet plans are on them because their employer pays for them. If early adopters are a little skittish, average consumers are likely to also balk at the cost, even when something as buzz-worthy as the iPhone comes into play. This comes down to a chicken versus egg problem. The high data plan costs are relatively high because of the small number of users making use of the services. Dropping prices could attract substantially more customers—but would it be enough to enough to cover the costs of these networks? At some point, the carriers will have to be more aggressive with their pricing, because as long as the data plans remain high, widespread adoption will be low. So where does that leave us? We're waiting for a catalyst, a must-have device that will throw the mobile Internet providers into a vicious competition for users that will see them devoting their attention to more than just business users and corporate accounts. Will the iPhone be that device? Maybe. There are plenty of big players trying to make this happen, and right now both Microsoft and RIM have a sizable lead on Apple, and Symbian isn't doing too bad, either.
News Article | July 2, 2008
Chock this one up to the rumor mill for the time being, but word on the street is that Sprint is getting set to increase data costs for new and old customers alike. According to the SprintUsers site, the carrier will be axing their current standalone Vision and Power Vision plans, which start at $15/month, in favor of mandatory Everything plans that begin at $69/month. Sure, the new plans include voice minutes, Sprint TV, GPS nav, and more, but for anyone that was signed up for a simple data-only plan, this will represent a significant cost hike. What’s worse, we’re hearing word that SERO subscribers could be affected, which means that anyone on the current $30 all-in plan could see another $39 on their bill starting next month. Yipes! Again, treat this with caution right now, but if Sprint starts forcibly migrating existing customers to a higher rate plan, we’re pretty sure some heads will roll.
News Article | August 22, 2008
Sprint [NYSE:S] is known for having one of the better data networks out there, so it stands to reason that if you wanted to use your notebook as a web terminal on the road, you might have a phone-as-modem plan through Sprint. If that's the case, your account is in for some changes; if you're a prospective buyer, keep your ears open, because changes are afoot. For one thing, Spring is dropping the price of the phone-as-modem plan to a scant $15 per month, with the customary 5GB monthy bandwidth cap. Here's where things get tricky: you can't use the plan unless you have a "Power Vision" phone which can connect to a laptop. But you're not out of the woods yet; there are more snags — ahem, details — to the plan. No longer is the phone-as-modem plan a standalone object. Now the P-a-M plan is "attachable" only, meaning that you need another data plan on your account before you can acquire this one. "Data plan" includes things like the BlackBerry [NASDAQ:RIMM] Internet package or the Worldwide Data Plan, which are $30 and $70 respectively. In sum, this is good news if you're a Sprint BlackBerry user, but bad news if you're a regular Joe who just wants to use his baseline Bluetooth phone to tether and surf.