Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G15/00—Cable fittings
  • H02G15/02—Cable terminations

Definitions

• the invention relates to a method for mounting measuring devices and / or communication on a cable transport or distribution of electrical energy particularly medium voltage and an accessory implementation of this method.
• This type of arrangement requires the manufacture of specific connectors and above all requires to provide during the assembly of this connector setting up the control device. In particular, on cables already installed, it is necessary to change the entire connector to equip these cables with a control device.
• the invention solves this problem by proposing a method for mounting measurement and / or communication devices, such as a current sensor, a voltage sensor, a CPL coupler ("Online Carrier Currents") and / or a low-voltage power supply device for electronic communication devices, for example for the remote reading of electricity meters, on a cable for transporting electrical energy, in particular medium voltage, which allows easy equipment of already installed cables or new cables.
• a current sensor such as a current sensor, a voltage sensor, a CPL coupler ("Online Carrier Currents") and / or a low-voltage power supply device for electronic communication devices, for example for the remote reading of electricity meters, on a cable for transporting electrical energy, in particular medium voltage, which allows easy equipment of already installed cables or new cables.
• the invention proposes a method of mounting at least one measuring device and / or communication on an electric power transmission cable near an end of this cable provided with a terminating equipment or connection, characterized in that it consists of mounting a standard accessory insulating support of this measuring device and / or communication on said cable end upstream of said equipment.
• said accessory is threaded on the conductor of said stripped cable at said end.
• said accessory is secured to said conductor by means of at least one adapter.
• the invention also relates to an accessory for the implementation of such a method, characterized in that it comprises a hollow cylinder provided with at least one side hollow cylinder section.
• it comprises a second hollow cylinder with a longitudinal axis substantially perpendicular to the longitudinal axis of said first hollow cylinder, the accessory being in the general shape of a cross with four branches.
• it is coated with a semiconductor layer and has a field control element. It is advantageously ethylene-propylene-diene monomer or silicone.
• the invention finally relates to the use of such an accessory, characterized in that a current sensor, a voltage sensor, a PLC coupler and / or a low-voltage power supply device for electronic communication devices are mounted. on or in at least one of said branches.
• Figures 1 and 2 are perspective views of a cable end according to the invention.
• Figures 3 and 4 are views in perspective and in longitudinal section of an accessory according to the invention.
• Figure 5 is a schematic longitudinal sectional view of the same support accessory sensors and couplers.
• FIGS 6 and 7 are detailed views in longitudinal section of the same support accessory sensors and couplers.
• Figure 8 is a detailed longitudinal sectional view of this accessory according to an alternative embodiment.
• Figure 9 is a detail perspective view of Figure 8.
• FIG. 1 represents a cable end mounted on an L-shaped connector 1 intended to be connected to an apparatus serving as a connection interface.
• FIG. 2 represents an air connection provided with a finned insulator 2.
• the invention applies to any end of the electrical energy transport cable C provided with a termination or connection equipment, for example a connector 1 or an insulator 2.
• It relates to a method for mounting at least one measuring and / or communication device on the power transmission cable electrical C near an end of this cable provided with this termination or connection equipment, consisting of mounting a standard accessory 3 insulating material support of the measuring device and / or communication on the cable end upstream equipment.
• Such a method can be applied as much on the cables already installed as on cables being installed.
• the accessory 3 advantageously ethylene-propylene-diene monomer or silicone, has a standardized diameter orifice through which it is threaded on the cable. It is therefore associated with an adaptation arrangement consisting of two adapters 4A, 4B of insulating material and preferably ethylene-propylene-diene monomer or silicone, and secured to the insulating layer of the conductor by means of these adapters.
• first hollow cylinder 3A1, 3A2 and a second hollow cylinder 3B1, 3B2 with a longitudinal axis substantially perpendicular to the longitudinal axis of the first hollow cylinder 3A1, 3A2, the accessory being in the general form of a cross with four branches 3A1, 3A2, 3B1, 3B2.
• the accessory 3 is coated with a semiconductor layer 3C and has an internal 3D field control element also made of semiconductor material.
• the accessory 3 may have a height h and a width
• the invention also relates to the use of such an accessory 3 as shown in Figure 5 schematic, wherein the conductor provided with its insulating layer 6 is shown schematically and the adapters 4A, 4B are not shown.
• a voltage sensor CT is mounted in a branch 3B1
• a DC current sensor is mounted on a branch 3A1
• a coupler CPL is mounted in a branch 3B2.
• the latter branch 3B2 also carries the electronic measurement system SE to which the CT, DC sensors and the CPL coupler are connected.
• a low-voltage supply device for electronic communication devices for example for the remote reading of electricity meters can also be mounted on the accessory.
• the accessory described above is a preferred embodiment for mounting all these sensors, coupler and electronic system.
• the accessory may have only one side cylinder section 3B1 or 3B2 ensuring for example the mounting of two sensors, or have more than two lateral cylinder sections for mounting a plurality of measurement and / or communication devices.
• the accessory can be mounted just upstream of the equipment 1,
• the cable can be rebuilt between the accessory and the cable end.
• a voltage sensor CT is mounted in a side branch 3B1 and a coupler CPL is mounted in another side branch 3B2.
• This last branch 3B2 also bears the SE electronic measuring system to which the CT sensor and the PLC coupler are connected.
• the accessory is traversed by the cable 6 stripped of its sheath 6G and its semiconductor layer 6SC and thus consists of the conductor provided with its insulating layer.
• the conductor provided with its insulating layer 6 is threaded into the lower branches 3A2 and upper 3A1 of the accessory 3.
• a metal contact ring 7 surrounds the conductor provided with its insulating layer 6 and ensures the passage of pieces of through contacts connecting the CT voltage sensor and the CPL coupler with the inner conductor of the cable 6.
• a lower adapter 4A secures the accessory to the conductor provided with its insulating layer 6 and is mounted on the cable in the lower branch 3A2 of the accessory and consists of a sleeve of deformable reduction type, known per se for mounting of connections.
• the accessory is mounted just upstream of the termination equipment and its upper branch 3A1 bears directly the insulating jacket 2.
• the accessory is mounted at a certain distance D from the cable end, as illustrated in FIG. 7, and the cable is reconstructed over this distance with its semiconductor layer 6SC and its sheath 6G.
• an upper adapter 4B preferably of the same type as the lower adapter 4A is mounted on the cable in the upper branch 3A1 of the accessory.
• FIGs 8 and 9 illustrate an alternative embodiment of the coupler CPL, which can be applied to the mounting modes shown in Figures 6 and 7.
• this coupler CPL here comprises a single capacitor 10 made of ceramic. Curved shape combining reduced weight, increased capacitance and good dielectric strength. Its two end faces 10A, 10B of circular cross section are metallized, one 10A on the medium voltage side and the other 10B on the low voltage side.
• This curved shape makes it possible to minimize the necessary insulating layer and thus to save space for the installation of the capacitor 10. Indeed, only a conical 10C insulating part is necessary, the corresponding branch 3B2 'of the accessory 3 then being formed. of this conical portion 10C coated and extended by a semiconductor sheath 3C, the inner inclined surface of this conical portion 10C receiving the side face 10D of the capacitor 10.

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• Arrangements For Transmission Of Measured Signals (AREA)

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• 2013
  • 2013-05-31 WO PCT/EP2013/061305 patent/WO2013186069A1/fr not_active Ceased
  • 2013-05-31 EP EP13728137.4A patent/EP2859632A1/de not_active Withdrawn

Non-Patent Citations (2)

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