Abstract

The present invention relates to an electric energy grid monitoring system comprising a plurality of optical fiber Bragg grating sensors (FBG) (005; 007; 011; 019; 021) arranged at points of interest in the electric energy grid to monitor parameters of interest of the electric grid, and an interrogator (001) for sending a light signal to the optical FBG sensors (005; 007; 011; 019; 021) and collecting the return light. In this configuration, variations in the wavelength of the return light from each of the optical FBG sensors (005; 007; 011; 019; 021) correspond to variations in the parameters of interest of the electric energy grid. The proposed system further comprises at least one primary optical fiber cable (003) to convey the light signal from the interrogator (001), and an optical fiber splitter (029) connected to the primary optical fiber cable (003) to split the light signal from the interrogator (001) to a plurality of secondary optical fiber cables (028). Each of the secondary optical fiber cables (028) is connected to one of the plurality of FBG sensors (005; 007; 011; 019; 021) to convey the light signal from the interrogator (001) to the plurality of optical FBG sensors (005; 007; 011; 019; 021).

IPC Classes  ?

• G01D 5/353 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
• G01K 11/3206 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres at discrete locations in the fibre, e.g. using Bragg scattering
• G01R 15/24 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices

Abstract

The present utility model relates to an arrangement in a passive adapter device for current sensors, the device comprising: a core case comprising two components, wherein each component houses a magnetic core and each component comprises a concavity to form a passage allowing the core case to be arranged around an electric conductor when the case is in the closed position; and an optical case attached to the side of the core case and accommodating, next to the magnetic cores, an optical fiber sensor (Fiber Bragg Grating or FBG) that can be connected to an optical fiber cable and attached to a magnetostrictive element.

IPC Classes  ?

• G01D 5/353 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
• G01K 11/12 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in colour, translucency or reflectance
• G01R 19/03 - Measuring effective values, i.e. root-mean-square values using thermoconverters

Abstract

The present invention relates to optical sensor cable arrangements in underground power distribution lines, comprising at least one housing structure (15), a plurality of electric conductors (13) inside the at least one housing structure (15) and at least one optical FBG sensor cable (1) inside the at least one housing structure (15), wherein the optical FBG sensor cable (1) is designed for monitoring at least one parameter from among the temperature or the acoustic vibrations of the plurality of electric conductors (13). Each sensor cable arrangement is such that the optical FBG sensor cable (1) is disposed parallel to and outside the plurality of electric conductors (13).

IPC Classes  ?

• H02G 9/06 - Installations of electric cables or lines in or on the ground or water in underground tubes or conduitsTubes or conduits therefor
• G01D 5/353 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
• G01K 11/3206 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres at discrete locations in the fibre, e.g. using Bragg scattering
• G01R 15/24 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices

Abstract

The present invention relates to a method for the autonomous control of the operation of medium-range energy storage systems for electrical energy distribution systems. This method aims to mitigate more significantly the technical impacts of the introduction of emergent technologies, such as photovoltaic generators, and is divided into two techniques. The first technique, called movement of the operating thresholds, aims to reduce the peak demand and improve the load factor upstream of the site of installation. The second technique, called voltage variation using the capacitance of the inverter, improves the voltage profile downstream of the site of installation, which essentially allows increased penetration of microgeneration throughout the network. The main advantage of the method is generated by the autonomous adjustment of the parameters of both techniques according to the site of installation, which simply requires local measurements for operation of the storage system. This means that it is not necessary to invest in infrastructure for data collection or to anticipate energy demand/generation along the network in order to execute the proposed method.

IPC Classes  ?

• H02J 3/32 - Arrangements for balancing the load in a network by storage of energy using batteries with converting means
• H02J 3/46 - Controlling the sharing of output between the generators, converters, or transformers
• H02S 10/20 - Systems characterised by their energy storage means
• H02S 40/38 - Energy storage means, e.g. batteries, structurally associated with PV modules

Abstract

The present invention relates to a valve assembly comprising: a valve seat (2), a valve (3), a rod (4) and a valve cup (5); in which the valve seat comprises a cylindrical format, three regions A, B and C, an intermediate region D for the installation of a filter (7) and a flanged region (6) located on the upper part; in which the valve cup (5) comprises a cylindrical format, a rib (9) and a section E; in which the valve (3) comprises two seats, an orifice (8) and four orifices (10); in which the end of the rod (4) is connected to the rib (9) by means of a pin (11), the intermediate portion of the rod (4) is connected to the valve (3) by means of two pins (12), and the other end of the rod (4) is connected to an actuation system.

IPC Classes  ?

• F16K 11/07 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with linearly sliding closure members with cylindrical slides
• F16K 3/314 - Forms or constructions of slidesAttachment of the slide to the spindle

Abstract

The present invention relates to a system and method for recovering energy in steam systems linked to industrial processes, using steam turbines to reduce pressure and/or replace pressure reducing valves. The main feature of the application is the control for keeping the steam output pressure of the turbine system steady, operating in a similar way to a pressure reducing valve, varying the electrical power recovered (and other parameters) as a function of the variation in steam pressure and flow required by the industrial process.

IPC Classes  ?

• F02C 1/00 - Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid
• F02C 6/00 - Plural gas-turbine plantsCombinations of gas-turbine plants with other apparatusAdaptations of gas-turbine plants for special use
• F01D 1/00 - Non-positive-displacement machines or engines, e.g. steam turbines
• F01K 27/00 - Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
• G05D 16/00 - Control of fluid pressure