REN - Redes Energéticas Nacionais, SGPS, S.A. is a Portuguese energy sector company which is the current concession holder of the country's two main energy infrastructure networks: the National Electricity Transmission Grid and the National Natural Gas Transportation Grid . It is responsible for the planning, construction, operation, maintenance and global technical management of both these grids and associated infrascrutures. Its stated mission is to provide a guarantee of an uninterrupted and stable supply of energy while ensuring equal rights of grid access to the remaining participants in the energy market, including consumers, generators and distributors.The company is also involved with the storage and transportation of liquefied natural gas, and owns and operates an LNG regasification terminal located at Sines. Wikipedia.
REN - Rede Electrica Nacional | Date: 2017-06-28
A razor head 100 having trimming unit includes a framework 10, at least one razor blade 20, a trimming unit 30, and a lubricating strip 50, the framework includes a front part 11, a rear part 12 and two side parts 13, the trimming unit is arranged along a lengthwise direction L of the framework and configured on the two side parts, the trimming unit and the rear part are configured side by side and define a receiving groove 40 together, a side wall of the rear part for defining the receiving groove has a first contact portion 123 extended into the receiving groove, a side wall of the trimming unit for defining the receiving groove has a second contact portion 34 extended into the receiving groove, the second contact portion corresponds to the first contact portion, the lubricating strip is inserted into the receiving groove, and the first and the second contact portions clamp the lubricating strip together.
REN - Rede Electrica Nacional | Date: 2017-08-02
The invention discloses a large reactor featuring a uniform temperature, a high efficiency and a low pressure drop, wherein the reactor comprises a housing, an internal heat-exchange member, an inlet tube case and an outlet tube case, wherein the internal heat-exchange member uses a heat-exchange winding tube, wherein the numbers of the inlet tube case and/or the outlet tube case each are 2 or a multiple of 2, which are respectively provided on a lower seal head and an upper seal head, or on a lower part and an upper part of a cylinder body, wherein the large reactor is a axial-radial reactor or a radial-axial reactor. The large reactor disclosed by the invention has the advantages of scalability, energy saving, reduced consumption, low investment, structural safety and reliability, scalability of optimized design, etc. The invention also discloses a process for synthesis of methanol using the above large reactor.
Agency: European Commission | Branch: FP7 | Program: CP | Phase: ENERGY.2011.7.2-1 | Award Amount: 19.44M | Year: 2012
6 Transmission System Operators (Belgium, France, Greece, Norway, Portugal and United Kingdom) and CORESO, a TSO coordination centre, together with 13 RTD performers propose a 4 year R&D project to develop and to validate an open interoperable toolbox which will bring support, by 2015, to future operations of the pan-European electricity transmission network, thus favouring increased coordination/harmonisation of operating procedures among network operators. Under the coordination of RTE, new concepts, methods and tools are developed to define security limits of the pan European system and to quantify the distance between an operating point and its nearest security boundary: this requires building its most likely description and developing a risk based security assessment accounting for its dynamic behaviour. The chain of resulting tools meets 3 overarching functional goals: i) to provide a risk based security assessment accounting for uncertainties around the most likely state, for probabilities of contingencies and for corresponding preventive and corrective actions. ii) to construct more realistic states of any system (taking into account its dynamics) over different time frames (real-time, intraday, day ahead, etc.). iii) to assess system security using time domain simulations (with less approximation than when implementing current standard methods/tools). The prototype tool box is validated according to use cases of increasing complexity: static risk-based security approach at control zone level, dynamic security margins accounting for new power technologies (HVDC, PST, FACTS), use of data coming from off-line security screening rules into on-line security assessment, and finally security maps at pan European level. Dissemination is based on periodic workshops for a permanent user group of network operators invited to use modules to meet their own control zone needs and the ones of present or future coordination centres.
Agency: European Commission | Branch: FP7 | Program: CP | Phase: ENERGY.2012.7.2.1 | Award Amount: 13.05M | Year: 2012
Eight Transmission System Operators (BE, CZ, FR, DE, IT, PT, CH, PL) and ENTSO-E, together with 4 associations of technology manufacturers, and 16 RTD performers propose a 3-year R&D project to develop and to apply a methodology for the long-term development of the Pan-European transmission network. The project aims at delivering a top-down methodology to support the planning from 2020 to 2050. First, it implements a set of future power scenarios, including generation units, the possible use of electricity storage and demand-side management solutions: scenarios for power localization are proposed with assumptions on the energy mix in each of the connected clusters covering the ENTSO-E area. Network studies are performed to detect the weak points when implementing the scenarios for 2050. Grid architectures options and a modular development plan are then proposed, including electricity highways, on the basis of power flow calculations, network stability analysis, socio-economic, network governance considerations, and with remarks from the consultation of European stakeholders. In parallel, an advanced planning methodology is designed, developed and tested with academic laboratories to address a few critical aspects of the above planning methodology, which may impact the robustness of the resulting architectures. This enhanced approach takes into account the correlated uncertainties in renewable generation and consumption, potential voltage and stability issues, and black-out risks including the feasibility of defence plans to avoid uncontrolled cascading failures of the candidate architectures. It includes the use of non-linear detailed models of power grids and stochastic optimization techniques. The dissemination is coordinated by ENTSO-E to reach the widest audience and to prepare the exploitation of the results. Standardization and complementary research efforts are pointed out for the future investment optimization with the support of the manufacturing industry.
Agency: European Commission | Branch: FP7 | Program: CP | Phase: ENERGY.2009.7.3.3 | Award Amount: 4.43M | Year: 2010
Electric power systems are facing a major new challenge (and hence opportunity): future massive integration in the electric grid of electric plug-in vehicles (EV). Distribution and transmission grids and power system architectures still follow planning rules and procedures defined for the traditional operational paradigm. Therefore, it is necessary to identify and prepare solutions for the operational problems that will be caused on the electric grid, to the generation sub-system and to its commercial operation as a result of progressively increasing deployment of EV. The conceptual approach in this project involves the development of a methodology consisting of two synergetic pathways: - Development of a management and control concept that will facilitate the actual transition the MERGE concept; - Development of an evaluation suite that consists of methods and programs of modeling, analysis, and optimization of electric networks into which electric vehicles and their charging infrastructure is integrated. The MERGE concept is inspired from consideration of DER deployment but differs in that we consider now the resources to be mobile in terms of their connection to the grid. Analogies will be derived and adapted to the case of mobile resources, which can be either consumers (when in charging mode) or injectors of power (if batteries are delivering power back to the grid). By exploiting a specific computational evaluation suite that is capable of simulating real world power systems (generation, transmission and distribution) for either steady state or dynamic behavior it will be possible to test the adequacy of EV preliminary smart control interfaces that will be developed in the project. It will address comprehensively the impact of EV presence regarding steady state operation, intermittent RES integration, system stability and dynamic behavior, system restoration, regulatory aspects and market arrangements.
Huawei, David and REN - Rede Electrica Nacional | Date: 2014-07-30
A method and an apparatus for implementing data transmission are disclosed. In the method and the apparatus according to embodiments of the present invention, a base station maps modulation symbols to resource elements, and sends precoded modulation symbols to a UE, so that the UE can use the reference signal frequency shift information and a mapping rule according to which the modulation symbols are mapped to the REs to complete data demodulation; and compared with an existing muting solution, in the method and the apparatus, all the REs can be used to complete data transmission, thereby avoiding waste of REs, and further improving throughput of service data, and improving spectrum efficiency of a system.
REN - Rede Electrica Nacional | Date: 2013-07-09
Abrasive tools of the disposable type applicable to many types of equipment to sand materials of various types are provided. In particular, the invention relates to devices using rotating abrasive discs for sanding machines, which include a plurality of flexible abrasive discs open at a radial cut and arranged in an overlapping and staggered configuration such as to define an abrasive, lamellar-like work surface with overlapping flaps, wherein each flap is formed of a protruding portion of an abrasive disc. Methods of making such abrasive tools are also provided.
REN - Rede Electrica Nacional | Date: 2015-01-07
A razor head (30) includes a framework (31), at least one razor blade (33), and a guide roller (33), the framework comprising two side parts (313), a front part (311) and a rear part (312) connecting between the two side parts respectively. The razor blade is installed between the two side parts, the guide roller is shaped as a columnar structure which is rotatably installed on the front part along a direction from one of the side parts to the other, and located at the front of a cutting edge (321) of the razor blade, and a rotating center line (333) of the guide roller and the cutting edge of the razor blades jointly form a first plane on which a generatrix of the guide roller is located, and the generatrix of the guide roller and the cutting edge of the razor blade are arranged in unparallel. The razor head improves shaving effect and extending normal service life. A razor (100) with such a razor head (30) is also provided.
REN - Rede Electrica Nacional | Date: 2014-07-30
Disclosed is an electric heating furnace having a furnace body provided on its base. The furnace body comprises more than two vertical supporting posts, between which a protective mesh is mounted. A supporting stand is fixedly provided in the furnace body. A lower supporting plate is provided on the supporting stand, an upper supporting plate provided on the upper portion of the furnace body. A reflector with more than two reflective surfaces is fixedly mounted between the upper and lower supporting plates. The reflective surfaces are distributed radially around the center of the reflector. Heating tubes are fixedly mounted in front of each reflective surface. A switch control corresponding to each heating tube is provided in the supporting stand. The supporting posts are provided at positions corresponding to an end of each reflective surface of the reflector, between which and ends of the reflective surfaces heat insulation gaps are formed.
REN - Rede Electrica Nacional | Date: 2011-04-27
The present invention relates to a method of producing high-quality reduced coenzyme Q_(10) converted from oxidized coenzyme Q_(10) by natural reductase. It is stable, completely natural, and can be used for injection. This method is suitable for large-scale industrial production without special protective environment/atmosphere. The method of producing reduced coenzyme Q_(10) includes three stages: (1) phosphorylation of oxidized coenzyme Q_(10); (2) reduction of phosphorylated oxidized coenzyme Q_(10) by biological reductases; (3) extracting reduced coenzyme Q_(10) from reductases,