Abstract:
A method, system and computer program product enhance the commercial value of electrical power produced from a wind turbine production facility. Features include the use of a premier power conversion device that provides an alternative source of power for supplementing an output power of the wind turbine generation facility when lull periods for wind speed appear. The invention includes a communications infrastructure and coordination mechanism for establishing a relationship with another power production facility such that when excess electrical power is produced by the wind turbine facility, the excess may be provided to the power grid while the other energy production facility cuts back on its output production by a corresponding amount. A tracking mechanism keeps track of the amount of potential energy that was not expended at the other facility and places this amount in a virtual energy storage account, for the benefit of the wind turbine facility. When, the wind turbine power production facility experiences a shortfall in its power production output it may make a request to the other source of electric power, and request that an increase its power output on behalf of the wind turbine facility. This substitution of one power production facility for another is referred to herein as a virtual energy storage mechanism. Furthermore, another feature of the present invention is the use of a renewal power exchange mechanism that creates a market for trading renewable units of power, which have been converted into nullpremier powernull and/or nullguaranteednull by secondary sources of power source to provide a reliable source of power to the power grid as required by contract.
Abstract:
An industrial load, preferably an electric arc furnace or a plant for rolling of metallic materials, is supplied from a three-phase electric ac network. A device for compensation of the reactive power consumption of the load comprises a first compensation device for controllable consumption of reactive power and a second compensation device for generation of reactive power, both connected to the electric power network in a parallel connection with the load. The first compensation device comprises a thyristor-controlled reactor for each of the phases of the ac network. Control equipment is supplied with measured values of sensed amplitude values for voltages and currents. The control equipment comprises means for forming a voltage mean value as the mean value of the sensed amplitude values of voltage, and means for forming, for each of the thyristor-controlled reactors, an amplitude deviation as a difference of the voltage mean value and the amplitude value associated with the thyristor-controlled reactor, and means for forming, for each of the thyristor-controlled reactors, a separate control order in dependence on the amplitude deviation for the respective thyristor-controlled reactor.
Abstract:
The invention relates to a drowsiness alert system for an operator console (1) wherein one or more operators (A, B) control and monitor physical facilities, operations or physically dispersed services. The system comprises wearable personal identification and sensor devices (9) worn by the operators (A, B) and a control unit (7) for communicating with said wearable personal identification devices (9) in order to detect the presence of said one or more operators (A, B) within a defined control room area (8). The invention is especially characterized in that each personal identification and sensor device (9) includes a sensor unit (14) for monitoring vital signs and other medical health status data of an individual operator (A, B), and is adapted to communicate said data to the control unit (7), which is adapted to detect a state of drowsiness or sleep and then activate a drowsiness alert action.
Abstract:
The present invention relates to a monitoring system (100, 200, 300, 400) comprising a first (130, 230, 330, 430) and a second (110, 210, 310, 410) portion. The first portion comprises a controller (132, 232, 332, 432) for providing a set of codes. The first portion is configured to connect said system to a common data bus (170, 270, 370, 470). The first portion (130, 230, 330, 430) is configured to provide a synchronisation signal to said second portion (110, 210, 310, 410) when the two portions are in a predetermined position. The second portion comprises a controller for replaying a code sequence to said first portion and said first portion being further configured to output said code sequence from said second portion for verification by a verification entity.
Abstract:
A mechanical switching device (1) comprising a base member (3), at least one pair of elongated conductor members (5) mounted on the base member, each conductor member comprising a conductor end (7), wherein the conductor ends of the pair of conductor members are separated by a gap (9), a middle member (11) mounted on the base member, a switch member (13) comprising a stationary part and a movable part, the movable part comprising a conductor bridge. The stationary part comprises a protruding member protruding away from the direction of displacement of the conductor bridge, wherein the base member, the conductor members, the middle member and the stationary part of the switch member are attached together by means of at least one attachment arrangement formed in the base member, the middle member and the protruding member.
Abstract:
A mounting bracket 1 for an electrical motor has two mounting interfaces 3, 4 at different distances from the bottom surface 2 to be used in combination with two stator frames 7, 17 of different sizes. The shaft height 12 for the both combinations becomes equal.
Abstract:
A cable connector device comprising: first bushing element (1), provided with a conical inner surface (5); an annular sealing element (2,), having a part with the shape of a truncated cone with an outer sealing surface (7) and an inner sealing surface (8), wherein said part of the sealing element (2) is discontinuous in a peripheral direction thereof in each cross section along the longitudinal direction thereof; a clamping element (3), provided so as to press the sealing element (2) in an axial direction thereof into a sealing engagement with the conical inner surface (5) of the bushing element (1). The sealing element (2) defines a single cone, wherein the inner sealing surface (8) thereof is continuous and the outer sealing surface (7) thereof is continuous.
Abstract:
A method for controlling a flow of molten steel in a mould by applying at least one magnetic field to the molten steel in a continuous slab casting machine. This is achieved by comprising controlling a molten steel flow velocity on a molten steel bath surface, meniscus, to a predetermined molten steel flow velocity by applying a static magnetic field to impart a stabilizing and braking force to a discharge flow from an immersion nozzle when the molten steel flow velocity on the meniscus is higher than a mould powder entrainment critical flow velocity and by controlling the molten steel flow velocity on the meniscus to a range of from an inclusion adherence critical flow velocity or more to a mould powder entrainment critical flow velocity or less by applying a shifting magnetic field to increase the molten steel flow when the molten steel flow velocity on the meniscus is lower than the inclusion-adherence critical flow velocity.
Abstract:
The invention relates to a method and a device for controlling a roll gap when rolling a strip (1) in a rolling mill including at least two rolls (3a-b,4a-b), and at least two roll gap actuators (6,7) that independently control the size of the roll gap. The device is adapted to receive information on the amount of wedge shape (POSact OS , POSact DS ) in the strip thickness profile across the strip width, and to control said actuators, based on said information on the amount of wedge shape in the strip thickness profile, such that the relative reduction of the strip on both sides of the rolling mill become essentially the same.
Abstract:
The invention relates to a device for continuous or semi- continuous casting of metal. The device comprises a mould (1), a casting tube (3) via which a molten metal is supplied to a molten metal (2) already present in the mould (1) in a region at a distance below the meniscus (7) of the latter molten metal, and at least one stirrer (4) consisting of an iron core and a coil applied around it, where the iron core is arranged to be elongated along the broad side of the mould (1), adapted to apply a magnetic field to the molten metal (2) for achieving stirring of said melt (2). The iron core is arranged such that its upper part is positioned at a distance from the meniscus (7) that lies from 50 mm above the surface of the meniscus (7) to 195 mm below said surface and the length of the iron core in relation to the length of the broad side of the mould (1) amounts to at least 50% and at most 80% of the broad side.