EP3428934A1 - Hochspannungsbuchse mit temperatursensor - Google Patents

Hochspannungsbuchse mit temperatursensor Download PDF

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Publication number
EP3428934A1
EP3428934A1 EP17180606.0A EP17180606A EP3428934A1 EP 3428934 A1 EP3428934 A1 EP 3428934A1 EP 17180606 A EP17180606 A EP 17180606A EP 3428934 A1 EP3428934 A1 EP 3428934A1
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EP
European Patent Office
Prior art keywords
high voltage
optical fiber
voltage bushing
conductor
sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP17180606.0A
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English (en)
French (fr)
Inventor
Jan Czyzewski
Victoria Maurer
Jakob Emmel
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ABB Schweiz AG
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ABB Schweiz AG
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Filing date
Publication date
Application filed by ABB Schweiz AG filed Critical ABB Schweiz AG
Priority to EP17180606.0A priority Critical patent/EP3428934A1/de
Publication of EP3428934A1 publication Critical patent/EP3428934A1/de
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/005—Insulators structurally associated with built-in electrical equipment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/26—Lead-in insulators; Lead-through insulators
    • H01B17/28—Capacitor type

Definitions

  • This disclosure is in the field of high voltage technology and relates to a high voltage bushing with integrated temperature monitoring, in particular a high voltage bushing with an optical-fiber-based temperature sensor.
  • a high voltage bushing is a component that is mainly used to carry current at high potential from an encapsulated active part of a first high voltage component, such as a transformer, a generator or a circuit breaker, through a barrier, like the grounded housing of the first component, to a second high voltage component, such as a high voltage line.
  • a first high voltage component such as a transformer, a generator or a circuit breaker
  • a second high voltage component such as a high voltage line.
  • Such a high voltage bushing is used in switchgear installations (such as gas-insulated switchgear, GIS) or in high voltage machines like generators or transformers, for voltages up to several hundred kV.
  • the high voltage bushing comprises a condenser core, which facilitates electrical stress control.
  • high voltage fine-graded bushings are either of the dry type (including resin-impregnated paper, resin-impregnated synthetics, or resin-impregnated fiber) or oil-impregnated paper (OIP), and are used in all kinds of applications with different insulation media.
  • Non-limiting examples are oil-air, oil-oil, and oil-gas high voltage bushings for transformers, as well as air-gas and air-air high voltage bushings for an application through walls or in gas-insulated switchgear.
  • high voltage bushings comprise a conductor, which is on high voltage potential, a condenser core with a number of concentric field-grading layers embedded in insulating material, and a grounded flange.
  • the conductor is electrically connected to the innermost field-grading layer, being a high voltage screen, which shields from the electric field all the components and materials located between the screen and the conductor.
  • a high voltage bushing in a first aspect, comprises a conductor extending along an axis defining an axial direction; a high voltage screen provided around the conductor; a condenser core which includes the high voltage screen; and a temperature sensor comprising an optical fiber, wherein a first portion of the optical fiber is located adjacent to the conductor, or in the conductor.
  • an electrical installation in a second aspect, comprises an enclosure having a wall with an opening, and a high voltage bushing according to the first aspect, mounted to the wall and extending through the opening.
  • a monitoring system for the temperature of a high voltage bushing comprises an electrical installation according to the second aspect, a control unit connected to the optical fiber and configured to detect light transmitted through the optical fiber and to employ information from the detected light to determine a temperature in the high voltage bushing.
  • an operator of an electrical installation such as a transformer
  • the operation of, e.g., a transformer can be controlled to avoid harming the high voltage bushing due to an excessive load, and to operate the high voltage bushing close to a limit of what the high voltage bushing can withstand.
  • an optimal load profile can be provided, ensuring both safe and stable operation of the high voltage bushing while providing an output as high as possible.
  • the operator has information on how far the high voltage bushing is from the limit of its current carrying capability, and can safely increase the transmitted power even over a normally allowed limit, e.g.
  • the temperature sensor(s) is or are located close to one or more hot-spot locations which are under high voltage.
  • the voltage difference is insulated appropriately according to aspects described herein, and the sensor is provided so that it is neither influenced by the electromagnetic field inside the high voltage bushing nor in its surroundings, nor does the sensor compromise the properties of the high voltage bushing insulation.
  • aspects of the invention pertain to a high voltage bushing with built-in temperature sensor.
  • the signal transmission from the sensor is carried out via one or more optical fibers, wherein the sensor(s) may be an integral part of the fiber(s).
  • the high voltage bushing may comprise also two or more sensors and/or fibers.
  • sensors are employed which do not require an additional power supply at the sensing location.
  • power may be supplied via the optical fiber to the sensor, or a thermopile may be used to generate a voltage close to the sensor.
  • Power may be supplied to the sensor via the transmission of light through an optical fiber. In this case, two separate fibers may be used, e.g.
  • a light converting device e.g. a solar cell, may be employed to convert the supplied light power into a voltage for operating the sensor.
  • multiple fibers may be used for the measurement or signal transmission and/or for the provision of power to the sensor.
  • the high voltage bushing is part of an electrical installation, such as, e.g., a transformer.
  • the applied voltage, and thus the voltage rating of the high voltage bushing may range from some kV to over 1000 kV, e.g. 5 kV to 1200 kV.
  • the sensor signals from the sensor(s) in the high voltage bushing may be monitored by a monitoring system.
  • this monitoring system also monitors other parameters of a transformer or another type of electrical installation which includes the high voltage bushing.
  • further sensors of various types e.g. also a hydrogen sensor, may be located at various positions on a transformer, e.g. at the winding, or at the top space above the oil volume. Their signals are routed to a control unit of the monitoring system.
  • the senor(s) within the high voltage bushing is or are advantageously located adjacent to the central conductor, where the highest temperatures occur.
  • the sensor or sensors are close to expected, simulated, or known hot-spot locations, such as, for example, at connection points of the current path.
  • the sensor is provided in an area of the high voltage bushing which has no electric field, i.e. either inside the conductor or conductor tube, or between the conductor and the high voltage field grading layer (henceforth also called high voltage screen or HV screen).
  • the optical fiber extends from the sensor along the conductor, either close or adjacent to its surface, or in a channel in the conductor or its surface, or between the conductor and the HV screen of the high voltage bushing, and extends further towards one of the end electrodes (terminals) of the high voltage bushing.
  • the fiber can either exit the high voltage bushing at one end of the condenser core and run along the outer insulation (e.g. spirally within helical silicone sheds), or run along the outside of the condenser core to the flange of the high voltage bushing and exit through an opening in the flange to the outside area, and from there typically further to the control unit.
  • the length of the portion of the optical fiber inside the high voltage bushing can be provided to be longer than the length of the insulator housing, e.g. by running the fiber spirally around the condenser core, allowing enhanced insulating properties.
  • the air-side insulator may be provided to extend spirally around the condenser core in the filling material between the condenser core and an outer insulator, such as in a helical groove.
  • a groove can be provided in the condenser core that spirally runs from one end towards a flange area where the high voltage bushing is mounted, e.g. to an opening in a wall. This groove may additionally be filled up with a filling material in a second step.
  • the fiber can extend along the longitudinal axis and inside the condenser core close to its surface, or can be wound around the condenser core and be over-molded with a sufficiently thick layer of the material forming the outer insulator.
  • the fiber may leave the condenser core at one end and then, in a straight fashion or spirally wound, further extend to the flange area and exit the high voltage bushing there.
  • OIP oil-insulated paper
  • the sensing element is typically mechanically decoupled from the solid state insulation of the condenser core. Otherwise, mechanical stresses occurring in the conductor or the condenser core of the high voltage bushing may be transferred to the optical temperature transducer of the sensor. Those mechanical stresses can distort the optical signal generated or transmitted in the transducer, thus reducing the accuracy of the measurement or even rendering a proper measurement impossible.
  • the mechanical decoupling can be achieved, for example, by embedding the sensor in a filling material, e.g. a gel. Conformable and compressible material can also be used, e.g.
  • the optical fibers running within the solid insulation need to be protected from mechanical stresses like vibration, thermal expansion or shrinkage of the core and could run in a tube or channel filled with a conformable and/or compressible material.
  • This channel or tube can be within the condenser core or in the conductor. Similar materials to those applicable to mechanical decoupling of the transducer can be used.
  • the exit port for the fibers is typically hermetically sealed, or other measures are taken to prevent liquids or gas from entering or leaking out of the high voltage bushing.
  • the optical sensors may be realized as a layer, coating, or crystal provided at an end or end portion of an optical fiber.
  • Gallium-Arsenide based sensors may be employed.
  • white light from a light source is coupled into the optical fiber.
  • This light passes through the GaAs crystal at the end of the fiber while being partially absorbed, and is then reflected back into the fiber by a mirror at the very tip of the sensor.
  • the reflected light is detected and spectrally analyzed.
  • the absorption spectrum of the GaAs crystal is temperature dependent, which makes it possible to infer a temperature from a given detected spectrum, which may typically be carried out by a control unit employing signal processing.
  • Suitable sensors are fluorescence-based sensors.
  • a light pulse is sent from an LED through the optical fiber to a fluorescent phosphor sensor located at the end of the fiber inside the high voltage bushing.
  • a fluorescent phosphor sensor located at the end of the fiber inside the high voltage bushing.
  • After excitation by the incoming light such a sensor emits light with an intensity that decays at a rate varying precisely with temperature.
  • the emitted light is detected with a photodetector, and the decay rate is then converted into a temperature by a control unit.
  • measurement systems with optical fibers employing Raman spectroscopy or Brillouin scattering may be used to deliver a temperature profile along the portion of the optical fiber located inside the high voltage bushing. Such systems are known as such and are applied in some industrial applications.
  • bent portion is intended to mean a segment of an optical fiber having a curved shape.
  • the bent portion is defined to be the portion of an optical fiber between the first part of the optical fiber, provided adjacent to or in the conductor, and the third part of the optical fiber (see further below), where the general direction of the optical fiber undergoes a significant change, i.e., more than about 20°.
  • the direction of the optical fiber changes in a range from about 45° to 200°, example values being 90° and 180°.
  • a bent portion means any element connecting two parts of the optical fiber having different directions, wherein the bent portion may for example also be realized by a prism, a mirror, or the like, to which both parts of the optical fiber are optically coupled.
  • the bent portion may for example also be realized by a prism, a mirror, or the like, to which both parts of the optical fiber are optically coupled.
  • some changes of direction of an optical fiber located within the bushing are depicted in a generalized form without having a significant radius. This is for illustrational purposes only, whereas in practice the optical fiber typically has a certain radius to avoid mechanical stress and light losses.
  • Fig. 1 shows a high voltage bushing 1 according to embodiments.
  • the high voltage bushing 1 includes a conductor 2 which is typically a substantially cylindrical rod or tube or a flexible stranded conductor, and which extends along an axis A.
  • a high voltage screen 5 is provided around the conductor 2 and is electrically connected (not shown) to the conductor 2, such that the high voltage screen 5 is on the same high voltage potential as the conductor 2.
  • the electric field strength is zero.
  • the gap 3 is typically filled with a solid dielectric material, such as a curable resin.
  • a condenser core 8 comprising a dielectric material is provided, for example comprising a curable resin.
  • a filling material (not shown) may be provided between the condenser core 8 and the insulating housing 20.
  • a temperature sensor 14 is provided which includes an optical fiber 15.
  • the temperature sensor 14 is configured to measure a temperature inside the high voltage bushing 1.
  • the temperature sensor 14 may in embodiments be provided such that the measurement may be carried out at a single location, at several different locations, or over several locations along a defined path along at least a part of the optical fiber 15. As the highest temperature inside the high voltage bushing 1 often occurs in the conductor 2 or close to the conductor 2, a first portion 15a of the optical fiber 15 is located adjacent to the conductor 2, or in a groove or channel in the conductor 2.
  • a first portion 15a of the optical fiber 15 extends along a longitudinal axis A of the conductor 2, which is also the longitudinal axis of the high voltage bushing 1.
  • the first portion 15a of the optical fiber 15 is terminated by a sensor portion 16, which is either provided in an end zone or at the end of the first portion 15a, or is connected or attached to the end of the first portion 15a and thus of the optical fiber 15.
  • the sensor portion 16 may be provided to be integrally formed with the optical fiber 15, for example as a coating which is applied via physical vapour deposition or the like to an end face of the first portion 15a of the optical fiber 15.
  • the sensor portion 16 may also be provided as a separate item, which is principally separable from the optical fiber 15.
  • the sensor portion 16 may comprise a hollow cylindrical hull which carries the sensor material in a part of its interior space, and into which the end of the optical fiber 15 is inserted.
  • the sensor portion 16 may comprise a Gallium-Arsenide (GaAs) crystal.
  • the crystal may for example be mounted to an end face of the first portion 15a of the optical fiber 15.
  • a light source 124 (not shown, see Fig. 12 ) with a known spectrum, which may also be frequently determined during operation, is coupled into the optical fiber 15 at the other end of the optical fiber 15, which extends on an outside of the high voltage bushing 1. This light passes through the GaAs crystal in the sensor portion 16 at the end of the first portion 15a of the optical fiber and is partially absorbed in the crystal. After passing the crystal, the light is reflected back into the fiber by a mirror at the very tip of the sensor portion 16.
  • GaAs Gallium-Arsenide
  • the reflected light is detected and spectrally analysed, for example by a spectrum analyser, being e.g. an array of photodetectors operatively coupled or being part of a control unit 120 (see Fig. 12 ).
  • a spectrum analyser being e.g. an array of photodetectors operatively coupled or being part of a control unit 120 (see Fig. 12 ).
  • the temperature of the GaAs crystal may be determined from the detected spectrum.
  • the optical absorption, and its temperature dependency, of GaAs are very well known. Suitable wavelength ranges are in the visible range and the near infrared, so that e.g. a light bulb may be used as a light source 124.
  • suitable sensors 14 are fluorescence-based sensors.
  • a light pulse is sent e.g. from an LED through the optical fiber 15 to a fluorescent phosphor sensor layer being the sensor portion 16 at the end of the first portion 15a.
  • the phosphor sensor layer 16 emits light with an intensity with a decay rate.
  • the decay rate varies precisely with temperature.
  • the measured decay rate may thus be converted into a temperature by a software in the control unit, for example.
  • thermopile which comprises one or a plurality of thermocouples, and an electro-optical transducer converting the thermopile voltage into an optical signal.
  • An example of an electro-optical transducer can be an LED, which emits light into the first portion 15a of the optical fiber, which may then be detected at the fourth portion 15d of the optical fiber extending from the high voltage bushing 1.
  • the thermopile delivers a voltage to the LED which is related to the temperature. Thus, with rising temperature, also the current in the LED rises and with it the intensity of the light emission of the LED.
  • a photodetector 125 (not shown, see Fig.
  • the control unit 12 located outside of the high voltage bushing 1, typically at the end of the fourth portion 15d extending outwards from the high voltage bushing 1, receives the light transmitted through the optical fiber 15.
  • the signal from the photodetector is then input to a control unit, which determines a temperature at the thermopile according to a calibration curve. Hence, the temperature at the sensor portion 16 located inside the high voltage bushing 1 is determined.
  • the length of the sensor portion 16 in a direction of the fiber varies greatly depending on the used sensor principle.
  • a thin-film metal sensor or a sensor having a number of coated dielectric layers may have a physical length as low as some 10 nanometers.
  • a GaAs crystal may need a significant thickness, such as e.g. up to some millimeters.
  • the sensor portion 16 may exhibit a length from about 10 nm to about 10 mm, more preferably from about 100 nm to about 5 mm.
  • the optical fiber 15 In the other direction of the optical fiber 15, distant to where the sensor portion 16 is provided, the optical fiber 15 is guided away from the conductor 2 and has a bent portion 15b where the fiber changes direction, typically by an angle of effectively about 180°.
  • the bent portion 15b is typically located close to an end of the condenser core 8.
  • the optical fiber then further extends from the bent portion 15b in a direction back towards the other end of the condenser core 8, or respectively of the high voltage bushing 1.
  • the bent portion 15b may exhibit a change of direction of the fiber of about 90° or different, and thus further extends sideways away from the high voltage bushing 1.
  • the bent portion 15b may be guided to have a significant radius, such as exemplarily shown in Fig.
  • a third portion 15c of the optical fiber 15 runs along the outside of the condenser core 8 towards the flange of the high voltage bushing and exits through an opening 13 in the flange 12 to the outside area and to the control unit (not shown, see Fig. 12 ).
  • the opening 13 in the insulating housing 20 is serving as an exit port for the optical fiber 15 and is typically hermetically sealed to prevent liquids or gas from entering into or leaking out of the high voltage bushing 1.
  • the sensor portion 16 is typically mechanically decoupled from the solid insulation material of the condenser core 8. Otherwise, mechanical stresses occurring in the conductor 2, in the dielectric material filling the gap 3, or in the condenser core 8 of the high voltage bushing 1 might be transferred to, e.g., the sensor portion 16 or the first portion 15a of the optical fiber. Those mechanical stresses could distort the optical signal generated or transmitted in the sensor portion 16, thereby reducing the accuracy of the measurement or even rendering the measurement impossible.
  • This mechanical decoupling can be achieved, for example, by embedding the sensor portion 16, and typically also the first portion 15a of the optical fiber, in a conformable material, e.g. a gel or foam.
  • the first portion 15a may be provided in embodiments to run in a groove 6a or channel 6b (see description of Fig. 2B, 2C below), which is filled up with a conformable and/or compressible material as a filling material 7.
  • Fig. 2A shows the conductor 2 with surrounding high voltage screen 5, and the first portion 15a of the optical fiber provided there between and being embedded in the filling material 7.
  • Compressible materials which may be used as a filling material 7, are, e.g., a gel filled with gas-filled microspheres, a foamed gel, a foamed elastomer, or combinations of the former.
  • Fig. 2B shows a substantially similar embodiment as in Fig. 2A , wherein the first portion 15a runs in a groove 6a in the surface of the conductor 2.
  • the first portion 15a, and the sensor portion 16 are provided in a channel 6b filled up with the filling material 7.
  • a high voltage bushing 1 according to further embodiments is shown.
  • the basic structure of the high voltage bushing 1 is substantially similar to that shown in Fig. 1 .
  • the length of the optical fiber 15, in particular of the third portion 15c is provided to be significantly longer than the length of the insulating housing 20. This is achieved by running the optical fiber 15, more particularly the third portion 15c, spirally around the condenser core 8. This allows for improved insulating properties.
  • the insulating housing 20 on the air side it can go spirally around the condenser core 8 in the filling material between the condenser core 8 and the insulating housing.
  • Fig. 4 shows a similar high voltage bushing 1, according to embodiments, as is shown in Fig. 3 , however in a front view with a virtually dismantled insulating housing 20 allowing a view on the outside of the condenser core 8.
  • the third portion 15c of the optical fiber is guided, differently to Fig. 3 , in a spiral groove 8a, which spirals around the outside of the condenser core 8.
  • Fig. 5 shows a high voltage bushing 1, where the third portion 15c of the optical fiber 15 is guided, substantially different to the previous embodiments, on an outside of the insulating housing 20.
  • the insulating housing 20 is configured with a helical groove formed on its outside face.
  • Fig. 6 is a front view of a high voltage bushing 1 with a similar concept, though different dimensions, than the one shown in Fig. 5 .
  • the third portion 15c of the optical fiber is extending spirally along the helical groove in the outer face of the insulating housing 20.
  • a high voltage bushing 1 for use with oil (provided at the lower side, second end terminal 1b) and air (upper side, first end terminal 1a) is shown.
  • the third portion 15c of the optical fiber 15 is provided to run spirally around the condenser core 8.
  • it runs in a spiral groove 8a.
  • the same concept can in embodiments be applied to oil-oil-bushings, an example of which is shown in Fig. 8 .
  • the inner structure of the high voltage bushing is substantially similar to the one shown e.g. in Fig. 5 .
  • the parts of the groove 8a not filled up by the optical fiber may optionally be filled with a filling material 7, similar to Fig. 2B and Fig. 2C .
  • Fig. 9 shows a high voltage bushing 1 according to embodiments, which is a directly molded high voltage bushing 1.
  • the condenser core 8 comprises epoxy resin, in which a number of electrically floating concentric shields 5a are embedded.
  • the insulating housing 20 comprises sheds, which typically comprise silicone rubber or another dielectric material.
  • the conductor 2 is connected via connection 2a to the high voltage screen 5.
  • the optical fiber may extend in a groove or in a channel in the epoxy resin, or other material, of the condenser core 8.
  • the channel or groove may be filled up with a compressible and/or conformable filling material 7, similar as was exemplarily described with respect to Figs. 2A to 2C .
  • Fig. 10 shows a further directly molded high voltage bushing 1 based on the embodiment of Fig. 9 .
  • the bent portion 15b and the third portion 15c of the optical fiber 15 are embedded in the material of the insulating housing 20.
  • the optical fiber 15 may thereby be wound about the condenser core 8 and then be overmolded with a layer of the material of the insulating housing 20, which in this example is silicone.
  • a high voltage bushing 1 which is an oil-impregnated paper (OIP) high voltage bushing.
  • An oil reservoir 30 is provided on top of the high voltage bushing 1.
  • the first portion 15a of the optical fiber 15 typically runs from the sensor portion 16 to one of the ends of the condenser core 8, where the bent portion 15b and the third portion 15c of the optical fiber follow.
  • the optical fiber 15 inside the high voltage bushing 1 thereby typically extends through oil, or respectively is immersed in oil.
  • the end of the third portion 15c is in an area of the flange of the high voltage bushing, where the optical fiber leaves the high voltage bushing 1 and extends outside from the high voltage bushing as the fourth portion 15d.
  • an electrical installation 110 according to embodiments is depicted, which in the non-limiting example of Fig. 12 includes a transformer 150 (only schematically shown).
  • a control unit 120 is connected to an optical fiber 15 and configured to detect a signal transmitted through the optical fiber.
  • the control unit 120 is adapted to use information on the detected light to calculate a temperature in the high voltage bushing 1.
  • the electrical installation 110 comprises an enclosure 115, in which the transformer 150 is provided, with a wall 122 having an opening 125.
  • the high voltage bushing 1 is mounted to the wall 122 and extends through the opening 125.
  • a bent portion 15b of the optical fiber 15 is located at a first end terminal 1a of the high voltage bushing 1.
  • the first end terminal 1a may be located on the outside of the enclosure 115, or on the inside of the enclosure 115.
  • the optical fiber 15 comprises a fourth portion 15d which extends in a direction away from the high voltage bushing 1, wherein the boundary between the third portion 15c and the fourth portion 15d is located in the vicinity of the wall 122 of the electrical installation 110.
  • all other high voltage bushings 1 according to embodiments described herein may be integrated in the electrical installation of Fig. 12 , partially with minor adaptions like, e.g., an oil-filling of the enclosure 115.
  • a monitoring system 180 for monitoring a temperature of a high voltage bushing 1 comprises a control unit 120 which is operably connected to an optical fiber 15 being part of the monitoring system 180.
  • the control unit 120 is configured to detect light from a sensor portion 16 transmitted through the optical fiber 15.
  • the control unit is configured to determine a temperature in the high voltage bushing 1 from the detected light, which may be received and detected by at least one photodetector 125, or an array of photodetectors 125, being operably connected to or being part of the control unit 120, for example.
  • the monitoring system 180 may further comprise a light source 124 adapted for coupling light into the optical fiber 15, for example an LED or a light bulb, which may be part of or be operatively coupled to the control unit 120. As is schematically shown in Fig.
  • the monitoring system 180 may be operably connected to further sensor strands 160, 161 to monitor other parameters of an electrical installation 110 including the high voltage bushing 1, such as, as non-limiting examples, a hydrogen content in the oil of transformer 150, or the temperature of the transformer 150.
  • the monitoring system 180 may further comprise a network interface for connecting the monitoring system to a data network, in particular a global data network.
  • the data network may be a TCP/IP network such as internet, also called industrial internet of things (IoT).
  • the monitoring system 180 is operatively connected to the network interface for sending data (monitoring data, etc.) or for carrying out commands received from the data network.
  • the data communication via network interface may include e.g. reporting data about: the current temperature, information about a rise of temperature, an alarm when a certain maximum temperature is exceeded, an alarm when the temperature rise per time exceeds a threshold value, and the like.
  • the commands may include e.g. control commands for controlling the monitoring system and to carry out tasks remotely, such as re-calibrating the control unit 120, or the like.
  • the monitoring system 180 in particular the control unit 120, further comprises a network interface for connecting the monitoring system 180 to a data network, wherein the monitoring system 180 is operatively connected to the network interface for at least one of: sending device status information to the data network, and carrying out a command received from the data network.
  • the data network may be an Ethernet network using TCP/IP such as local area network (LAN) and/or wireless local area network (WLAN), wide are network (WAN) or Internet, in particular industrial internet of things (IoT).
  • TCP/IP such as local area network (LAN) and/or wireless local area network (WLAN), wide are network (WAN) or Internet, in particular industrial internet of things (IoT).
  • the data network may comprise distributed storage units such as Cloud.
  • the Cloud can be in form of public, private, hybrid or community Cloud.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
EP17180606.0A 2017-07-10 2017-07-10 Hochspannungsbuchse mit temperatursensor Withdrawn EP3428934A1 (de)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3706145A1 (de) * 2019-03-05 2020-09-09 Siemens Aktiengesellschaft Hochspannungsdurchführung mit temperaturerfassung und transformatorvorrichtung mit der hochspannungsdurchführung
US11073430B2 (en) * 2016-03-10 2021-07-27 Siemens Aktiengesellschaft High-voltage device featuring temperature measurement, and method for measuring the temperature of a high-voltage device
CN113358757A (zh) * 2021-06-25 2021-09-07 江西德安万年青水泥有限公司 110kv总降主变油色谱在线监测分析系统
WO2022166821A1 (zh) * 2021-02-08 2022-08-11 江苏神马电力股份有限公司 一种变压器套管
CN117649986A (zh) * 2024-01-29 2024-03-05 搏世因（北京）高压电气有限公司 一种干式电容式套管绝缘结构以及制作方法

Citations (4)

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