WO2020229523A1 - Hochspannungstransformator, verfahren zum herstellen eines hochspannungstransformators sowie prüfsystem und prüfsignalvorrichtung mit einem hochspannungstransformator - Google Patents
Hochspannungstransformator, verfahren zum herstellen eines hochspannungstransformators sowie prüfsystem und prüfsignalvorrichtung mit einem hochspannungstransformator Download PDFInfo
- Publication number
- WO2020229523A1 WO2020229523A1 PCT/EP2020/063299 EP2020063299W WO2020229523A1 WO 2020229523 A1 WO2020229523 A1 WO 2020229523A1 EP 2020063299 W EP2020063299 W EP 2020063299W WO 2020229523 A1 WO2020229523 A1 WO 2020229523A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- voltage
- winding
- transformer
- voltage transformer
- voltage winding
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F30/00—Fixed transformers not covered by group H01F19/00
- H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
- H01F30/16—Toroidal transformers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1254—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of gas-insulated power appliances or vacuum gaps
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/14—Circuits therefor, e.g. for generating test voltages, sensing circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/62—Testing of transformers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/72—Testing of electric windings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2895—Windings disposed upon ring cores
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/06—Coil winding
- H01F41/08—Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
- H01F2027/2842—Wire coils wound in conical zigzag to reduce voltage between winding turns
Definitions
- High-voltage transformer method for manufacturing a high-voltage transformer, and test system and test signal device with a high-voltage transformer
- the invention is in the field of high-voltage measurement technology and relates in particular to high-voltage transformers, methods for their production, high-voltage test signal devices and test systems for testing a high-voltage device using a test signal with a high electrical voltage.
- high-voltage devices such as power transformers or switchgear - in particular gas-insulated switchgear - are usually used to convert and distribute electrical energy.
- Other high-voltage devices such as high-voltage converters or high-current converters - for example for measuring voltages and currents occurring in a power network -, power switches and power generators are also usually used here.
- Such high-voltage devices or other high-voltage devices such as electric (power) motors are also used in the industrial environment, in particular for production.
- an insulation material from a high-voltage device - such as a high-voltage current converter, a high-voltage voltage converter or a circuit breaker - can be checked, for example, by measuring the DC voltage resistance.
- a loss factor or a capacitance from a high-voltage device - such as a power transformer or a rotating machine, for example from a generator or an electric motor - can also be used here. can be measured, which can also provide information about a (still remaining) quality of insulating materials or insulating liquids.
- a partial discharge measurement can also be carried out.
- high voltages can also be used as a test signal during the measurement.
- measurements in the field - i.e. outdoors or in an industrial environment - are often carried out for the check.
- Test devices are known for use in the field which integrate a signal generator and a high-voltage transformer or which convert a mains voltage into a high voltage by means of a variable transformer in order to generate a test signal with a high electrical voltage - i.e. in particular with a high voltage amplitude or a high effective voltage. While measures of this kind may be necessary for the operational safety of such a test device, the high-voltage winding of the high-voltage transformer or variable transformer - i.e.
- the test device should have a low weight, especially for field use, and be robust for transport to the respective location.
- the invention is based on the object of providing a corresponding test system and a corresponding manufacturing method.
- a high-voltage transformer with the features of claim 1 a test signal device with the features of claim 10, a test system with the features of claim 12 and a manufacturing method with the features of claim 13 are provided.
- the dependent claims define preferred and / or advantageous embodiments of the invention.
- a first aspect of the invention relates to a high-voltage transformer which is preferably designed for a test system for testing a high-voltage device.
- the high-voltage transformer is designed as a toroidal core transformer and has a magnetizable core, a high-voltage winding and a low-voltage winding.
- the high-voltage winding and the low-voltage winding are arranged around the magnetizable core in an electrically insulated manner from one another, the high-voltage winding being designed at least in sections as a mit step winding.
- low-voltage winding and “high-voltage winding” are to be understood as windings which have one or more turns of an electrical conductor around a (local) circumference of a transformer core of the high-voltage transformer, the electrical conductor mostly being covered by an insulation layer to avoid it is surrounded by short circuits between the individual turns.
- a coil wire or a stranded coil is usually used and wound around the transformer core along a circumferential direction, so that a current flowing through the electrical conductor induces a magnetic flux in the transformer core and the components of the magnetic flux per turn at least essentially add up.
- Such a winding usually extends along a (local) forward direction of the transformer core. Several of the turns of such a winding can be lined up along or opposite to the forward direction.
- the electrical voltage applied to the low-voltage winding is transformed into a high voltage that can be tapped off at the high-voltage winding, depending on the turns ratio.
- a voltage in the range of 1 KV and higher is regarded as "high voltage”, so that the high-voltage transformer according to the invention is designed to generate and provide correspondingly high output voltages.
- the high voltage provided by the high voltage transformer can in particular be such that it can serve as test voltage for testing a high voltage device.
- a “high-voltage device” is to be understood as at least one device - for example as part of a high-voltage installation for energy supply or as part of an electrically operated production installation - which is operated with a high electrical voltage or a high electrical current, a such controls, converts or measures or can be exposed to a high electrical voltage for any other reason and should be set up for safe operation - for example through adequate electrical insulation.
- such a high-voltage device can be a power transformer, a (high-voltage) switchgear, a (high-voltage) circuit breaker or power switch, a high-voltage or high-voltage rotating machine such as a power electric motor or a power generator, a tap changer for a transformer or a measuring transducer such as a Be a high voltage converter or a high current converter.
- a “pilgrim winding” - also “pilgrim winding” or “oblique winding” - is to be understood as at least one winding for a transformer which has several layers of turns around the transformer core, the individual layers only being along a section extend against the forward direction of the core and each (electrically) subsequent layer extends in the opposite direction - that is, opposite or along the forward direction - and partially overlaps the previous layer.
- those layers that extend in the forward direction extend (at least in total) further than that other layers opposite to the forward direction - or vice versa so that the mit step winding extends over a larger section (compared to the sections of the individual layers) along - or correspondingly opposite - the forward direction of the core.
- the high-voltage winding can also be designed completely as one or precisely one vocational step winding. In some embodiments, the high-voltage winding can also be embodied as a plurality of vocational step windings, some or all of the vocational step windings being contiguous or adjacent to one another along the forward direction.
- One advantage of the pilgrim winding can be that it enables higher frequencies to be transmitted, which in particular enables power quality measurement applications to be made with the high-voltage transformer - that is, when testing the high-voltage device, determine a load- and frequency-dependent transmission behavior of the high-voltage device over a larger frequency range leaves.
- Another advantage of the pilgrim step winding can in particular be that a multi-layer winding and thus in particular a higher number of turns and / or a higher transmission ratio is made possible.
- contiguous or adjacent turns or correspondingly superimposed layers of the turns have a smaller voltage difference - i.e. in particular a lower (double) layer voltage - than, for example, in a multi-layer helical or wild winding, which is at least essentially over the entire core for each layer would extend.
- a “toroidal core transformer” has at least one ring-shaped core with a magnetizable material - that is to say in particular a so-called toroidal core - as the transformer core.
- a toroidal core is essentially closed or almost closed in a ring shape.
- the toroidal core can preferably have a toroidal shape, for example in the form of a toroid or a tube section or, more generally, a rounded three-dimensional body which has a central hole.
- the toroidal core can be cut through from the central hole in one section towards the outside, that is to say have a so-called air gap.
- the toroidal core can be closed around the central hole, in particular along its toroidal direction, whereby in particular the magnetic flux can propagate in the magnetizable material along the alen direction without interruption.
- the magnetizable core that is to say the toroidal core
- the magnetizable core can be wound with the high-voltage winding and / or the low-voltage winding over a large (longitudinal) section in the forward direction.
- Another advantage of a high-voltage transformer with a toroidal core as a magnetizable core / transformer core can be that, during operation, the magnetic field lines largely run within the toroidal core, which can reduce magnetic interference fields.
- One advantage of the toroidal core transformer can also be that it has a form factor that can be easily integrated into a housing.
- the high-voltage transformer has a protective layer which is arranged between the high-voltage winding and the low-voltage winding.
- the protective layer has an electrically conductive layer for shielding the high-voltage winding from the low-voltage winding.
- the magnetizable core has an insulation layer made of an electrically insulating material for electrically insulating the magnetizable core from the low-voltage winding and from the high-voltage winding.
- the high-voltage winding is arranged close to the core or directly on the magnetizable core.
- insulation is provided between the core and the high-voltage winding.
- the low-voltage winding is preferably arranged around the high-voltage winding.
- An advantage of the arrangement of the high-voltage winding around the magnetizable core and the low-voltage winding around the high-voltage winding can in particular be that the number of turns of the high-voltage winding is reduced and a shorter wire length is required for the high-voltage winding, which in particular allows losses to be reduced and / or that Frequency behavior can be further improved, especially for higher frequencies.
- Another advantage of the arrangement of the high-voltage winding around the magnetizable core and the low-voltage winding around the high-voltage winding can be that the high-voltage winding is arranged closer to the core, which means that any heat that could occur during operation due to losses in the high-voltage winding - such as ohmic losses , can be dissipated to the magnetizable core, the high-voltage winding can therefore (at least temporarily) be cooled by heat dissipation to the magnetizable core or a temperature of the high-voltage winding can be buffered by the magnetizable core.
- the improved heat dissipation makes it possible to increase the performance of the high-voltage transformer and / or reduce its weight, in particular increasing a transformation ratio of the high-voltage transformer, increasing an achievable output voltage and / or a (temporarily) possible maximum electrical output power at the high-voltage winding.
- the magnetizable core is "floating" and has no electrical contact or no electrical connection to earth or ground.
- the magnetizable core is electrically isolated both from earth and from the high-voltage winding and low-voltage winding.
- the geometry of the high-voltage transformer can be selected such that the maximum voltage that can occur between the high-voltage winding and the magnetizable core is only half the voltage that would occur if the magnetizable core were at ground potential.
- test signal device for a test system for testing a high-voltage device, which comprises a high-voltage transformer according to the embodiments described above, and a correspondingly configured test system for testing a high-voltage device.
- Fig. 2 a cross section through the high voltage transformer of Fig.
- FIG. 5 a flow diagram of a method for producing a high-voltage transformer according to an embodiment.
- Connections and couplings between functional units and elements shown in the figures can also be implemented as indirect connections or couplings.
- data connections can be wired or wireless, that is to say in particular as a radio connection.
- Certain connections, for example electrical connections, for example for energy supply, can also not be shown for the sake of clarity.
- FIG. 1 schematically shows a high voltage transformer 300 according to an embodiment of the present invention.
- the high-voltage transformer 300 has a magnetizable core 310, 31 1, a low-voltage winding 320, a high-voltage winding 330 and a protective layer 340.
- the low voltage winding 320 and the high voltage winding 330 extend along a forward direction 316 of the magnetizable core.
- the high-voltage winding is arranged at least around a part, in particular a longitudinal section, of the magnetizable core 310, 31 1 and is designed as a mit step winding.
- the high-voltage winding 330 is located directly on the magnetizable core 310, 31 1.
- the protective layer 340 is arranged around the high-voltage winding 330, which has an insulating material and thus electrically insulates the low-voltage winding 320, which is arranged further outward relative to the high-voltage winding and the protective layer 340, from the high-voltage winding 330.
- the low voltage winding 320 has multiple turns 328.
- the windings 328 can be wound helically in the direction of the forward direction 316 around the magnetizable core 310 and correspondingly in the case of parts with the high-voltage winding 330 or the protective layer 340 also wound around these.
- an enamel-insulated coil wire in particular made of copper, can be helically wound around the magnetizable core 310.
- the windings are shown for only a portion 310 of the magnetizable core for the sake of simplicity.
- the high-voltage transformer 300 is designed as a toroidal core transformer, so that the high-voltage winding 330 and the low-voltage winding 320 actually extend in a ring shape along the entire length of the ring-shaped magnetizable core 310, 31 1.
- the core 310, 31 1 is annularly closed or almost closed, wherein in the last-mentioned case the annular core 310, 31 1 is only interrupted by an air gap.
- the ring shape can be toroidal, however, as shown in the figures, angular designs are also possible.
- FIG. 2 shows a cross-section through the high-voltage transformer 300 to illustrate its structure from the inside - that is, from the magnetizable core - to the outside - that is, towards the low-voltage winding -, the cross-section being at least substantially perpendicular to the forward direction of the magnetizable core.
- the high-voltage winding 330 is arranged concentrically around the magnetizable core 310.
- the protective layer 340 is then arranged concentrically around the high-voltage winding 330.
- the low voltage winding 320 is arranged concentrically around the protective layer 340.
- the high-voltage winding 330 is thus arranged further inside and the low-voltage winding 320 further outside, relative to one another or relative to the protective layer 340, so that the high-voltage winding 330 is closer to the magnetizable core 310.
- the high-voltage winding 330 touches the magnetizable core or is only separated from it by an insulation layer (not shown in FIG. 2), which enables improved thermal coupling between the high-voltage winding 330 and the magnetizable core 310, thereby increasing the performance can be.
- the protective layer 340 has, as shown, a first electrically insulating layer 342, an electrically conductive layer 344 and a second electrically insulating layer 346.
- the high-voltage winding and the low-voltage winding can advantageously be shielded from one another by means of the electrically conductive layer 344 and the electrically conductive layer 344 can be electrically insulated both from the high-voltage winding by means of the first electrically insulating layer 342 and from the low-voltage winding by means of the second electrically insulating layer 346.
- the first electrically insulating layer 342 can be galvanized and the electrically conductive layer 344 can thus be applied thereon.
- the electrically conductive layer 344 can also be vapor-deposited (in particular as metal vapor) or glued on (in particular as metal foil).
- the second electrically insulating layer 346 can be omitted.
- FIG 3 shows a longitudinal section through a high-voltage transformer according to a further embodiment of the present invention to illustrate the high-voltage winding designed as a mit winding, with any further components such as the protective layer, the low-voltage winding or a magnetic connecting element not being shown for the sake of clarity.
- the high-voltage transformer shown in FIG. 3 can correspond to the high-voltage transformer 300 described with reference to FIG. 1 and / or FIG. 2, the longitudinal section being at least essentially along the forward direction of the magnetizable core, so that the forward direction 316 lies at least essentially in the cutting plane.
- the forward direction 316 is illustrated in Fig. 3 by a dashed, turning arrow, wherein the forward direction is to be understood relative to the respective position in the magnetizable core 310 and to a possible magnetic flux and consequently represents a local direction, which in particular each locally in the direction of a shows any magnetic flux (or always against this direction). If the forward direction is followed locally in the case of a closed magnetizable core, a closed curve is obtained that encloses exactly one area.
- the high-voltage winding 330 has several turns, which are grouped into several groups 335 of turns, which are wound electrically in series and helically in the forward direction around the magnetizable core 310 per group, and in several groups 336 of turns, which are electrically in series per group and are helically wound against the forward direction around the magnetizable core.
- the groups 235 and 236 are alternately connected electrically in series with one another and each alternately wound around the magnetizable core 310, so that on a first number of turns in the forward direction for one of the groups 335 a second number of turns against the device for one of the groups 236 follows. In addition, the first number is greater than the second number, so that overall there is a winding in the forward direction.
- a coil wire can alternately be wound around the core 310 in the forward direction for the first number of turns and wound around the core 310 in the reverse direction - that is, against the forward direction - for the second number of turns.
- the coil wire can be an enamel-insulated copper wire.
- the turn 338 of one of the groups 336 is spatially adjacent to the turns 337 and 339 of one of the groups 335 and also electrically only one or only two turns away from them, whereby a relative between the turns there is a small voltage difference in the operation of the high-voltage transformer.
- the magnetizable core 310 can also have an insulation layer 314. This can, as shown in FIG. 3, be connected to the core and only cover a part, in particular a length section to be wound, that of the core 310 or else surround the entire core 310 and thus electrically isolate it. In some variants, this can be particularly advantageous in combination with a magnetizable core 310 made of core sheet, in particular made of several layers of core sheet, which in particular can be wound to form a toroidal core.
- FIG. 4 shows a test system 10 according to an embodiment of the present invention together with a high-voltage device 30 to be tested as a schematic block diagram, with some components of the test system and associated electrical connections, connection points and / or node points as an electrical (principle) circuit diagram for a more detailed illustration are shown.
- the test system 10 includes a portable main device 100 and a portable high-voltage test signal device 200.
- the high-voltage test signal device 200 as a portable additional device of the test system 10, enables additional (test) functions - in particular those functions that are based on a high voltage - in addition to functions that the portable main device already provides.
- the portable main device 100 has a housing and a power output 120 integrated into the housing.
- the portable high-voltage test signal device 200 has a housing and a power input 220 integrated into the housing.
- the power output 120 and the power input 220 are electrically connected by means of a cable 20 during operation, that is to say for testing the high-voltage device 30.
- the portable high-voltage test signal device 200 also has a test signal device 230, the components of which are accommodated in the housing of the high-voltage test signal device 200.
- a first test connection 232 and a second test connection 234 of the test signal device 230 can be integrated in the housing of the portable high-voltage test signal device 200 in a manner corresponding to the power input 220.
- the first test connection 232 is electrically connected to a first connection point 32 of the high-voltage device 30 and, correspondingly, the second test connection 234 is electrically connected to a second connection point 34 of the high-voltage device 30.
- the portable high-voltage test signal device 200 can have a grounding connection 204, which in particular enables separate grounding - for example for increased operational safety.
- one of the test connections can also serve as a ground connection, which in particular enables simpler cabling.
- the test signal device 230 has the high-voltage transformer 300 according to one of the previously described embodiments, the high-voltage transformer 300 being shown only schematically in FIG. 4 with the magnetizable core 310, the low-voltage winding 320 and the high-voltage winding 330 and the protective layer 340.
- the magnetizable core 310 is designed as a toroidal core, which in particular enables low interference radiation, a compact design and a form factor that can be easily integrated into a housing and thus a particularly easy-to-transport high-voltage test signal device 200.
- This compact design is synergistically supported by the high-voltage winding 330, which is preferably close to the core - and thus in particular thermally buffered by means of the magnetizable core 310.
- both the low voltage winding 320 and the high-voltage winding 330 can be formed by a suitable number of partial windings.
- the high-voltage winding 330 has a first connection point 332 and a second connection point 334, the second connection point 334 being electrically connected to the second test connection 234.
- the first connection point 332 can be electrically connected to the first test connection 232, whereby these can be connected directly to one another or, as shown, by means of an electrical switch 238 of the test signal device 230.
- the switch 238 enables the first connection point 332 and the first test connection 232 to be selectively to be electrically connected, so that the electrical connection for applying a high voltage to the high-voltage device 30 can be established and, for example, can be disconnected between individual test procedures for safety.
- the low-voltage winding 320 has a first connection point 322 and a second connection point 326.
- the first and the second connection point 322, 326 are electrically connected to the power input 220 in such a way that a power signal can be applied between the two connection points 322, 326 via the power input 220.
- the portable main device 100 has a power signal source 130, in particular a controllable voltage source, which is electrically connected to the power output 120.
- the portable main device 100 is set up to control the power signal source 130 such that an electrical voltage is applied between the first and second connection points 322, 326 of the low-voltage winding 320 via the power signal and the high-voltage transformer 300 converts this voltage into a test signal for testing the high-voltage device 30, which is applied between the first and second connection point 332, 334 of the high-voltage winding 330 - and thus also between the first and second test connection 232 and 234 when the switch 238 is closed.
- the portable main device 100 is preferably designed in such a way that it controls the test sequence with the aid of an integrated controller (not shown in FIG. 4) with the aid of the test signal generated by the high-voltage transformer 300.
- FIG. 5 shows a flow diagram of a method 800 for producing a high-voltage transformer according to an embodiment of the present invention.
- the method 800 has the method steps 810, 820, 830 and 840.
- the method 800 begins at the method start 802 and ends at the method end 804, the method steps being carried out in the following sequence and some variants of the method - for example for producing certain embodiments, developments, variants or exemplary embodiments according to the description and / or according to the figures - May have further process steps.
- a magnetizable core is provided for the high-voltage transformer configured as a toroidal core transformer.
- a coil wire is wound around the magnetizable core at least in sections as a mit step winding, so that a high-voltage winding of the high-voltage transformer is formed.
- a protective layer is applied which envelops the high-voltage winding on a side facing away from the magnetizable core and electrically isolates the high-voltage winding in the direction of the side facing away.
- a coil wire is wound around the high-voltage winding covered by the protective layer, so that a low-voltage winding of the high-voltage transformer has a smaller number of turns than a number of turns of the high-voltage winding is formed and the protective layer electrically isolates the high-voltage winding and the low-voltage winding from one another.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Coils Or Transformers For Communication (AREA)
- Transformers For Measuring Instruments (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202080035797.2A CN113841209A (zh) | 2019-05-13 | 2020-05-13 | 高压变压器、制造高压变压器的方法以及包括高压变压器的测试系统和测试信号装置 |
EP20727178.4A EP3970168A1 (de) | 2019-05-13 | 2020-05-13 | Hochspannungstransformator, verfahren zum herstellen eines hochspannungstransformators sowie prüfsystem und prüfsignalvorrichtung mit einem hochspannungstransformator |
BR112021022581A BR112021022581A2 (pt) | 2019-05-13 | 2020-05-13 | Transformador de alta tensão, método para a produção de um transformador de alta tensão assim como sistema de teste e dispositivo de sinal de teste com um transformador de alta tensão |
US17/610,308 US20220246352A1 (en) | 2019-05-13 | 2020-05-13 | High voltage transformer, method for producing a high voltage transformer and test system and test signal device comprising a high voltage transformer |
CA3139358A CA3139358A1 (en) | 2019-05-13 | 2020-05-13 | High voltage transformer, method for producing a high voltage transformer and test system and test signal device comprising a high voltage transformer |
KR1020217040647A KR20220006636A (ko) | 2019-05-13 | 2020-05-13 | 고전압 변압기, 고전압 변압기의 제조 방법 및 고전압 변압기를 포함하는 테스트 시스템 및 테스트 신호 디바이스 |
MX2021013787A MX2021013787A (es) | 2019-05-13 | 2020-05-13 | Transformador de alto voltaje, método para producir un transformador de alto voltaje y sistema de prueba y dispositivo de señal de prueba que comprende un transformador de alto voltaje. |
AU2020273556A AU2020273556B2 (en) | 2019-05-13 | 2020-05-13 | High voltage transformer, method for producing a high voltage transformer and test system and test signal device comprising a high voltage transformer |
ZA2021/09185A ZA202109185B (en) | 2019-05-13 | 2021-11-17 | High voltage transformer, method for producing a high voltage transformer and test system and test signal device comprising a high voltage transformer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA50429/2019A AT522601A1 (de) | 2019-05-13 | 2019-05-13 | Hochspannungstransformator, Verfahren zum Herstellen eines Hochspannungstransformators sowie Prüfsystem und Prüfsignalvorrichtung mit einem Hochspannungstransformator |
ATA50429/2019 | 2019-05-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020229523A1 true WO2020229523A1 (de) | 2020-11-19 |
Family
ID=70779693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2020/063299 WO2020229523A1 (de) | 2019-05-13 | 2020-05-13 | Hochspannungstransformator, verfahren zum herstellen eines hochspannungstransformators sowie prüfsystem und prüfsignalvorrichtung mit einem hochspannungstransformator |
Country Status (11)
Country | Link |
---|---|
US (1) | US20220246352A1 (de) |
EP (1) | EP3970168A1 (de) |
KR (1) | KR20220006636A (de) |
CN (1) | CN113841209A (de) |
AT (1) | AT522601A1 (de) |
AU (1) | AU2020273556B2 (de) |
BR (1) | BR112021022581A2 (de) |
CA (1) | CA3139358A1 (de) |
MX (1) | MX2021013787A (de) |
WO (1) | WO2020229523A1 (de) |
ZA (1) | ZA202109185B (de) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH353454A (de) * | 1957-03-05 | 1961-04-15 | Micafil Ag | Wickelmaschine zum Bewickeln von zylindrischen oder vieleckigen Spulenkörpern mit Draht mit der Pilgerschrittwicklung |
AT231555B (de) * | 1961-02-08 | 1964-02-10 | Siemens Ag | In einen Gießharzkörper eingebettete Hochspannungswicklung für Transformatoren, Wandler od. dgl. |
US7271691B2 (en) * | 2001-03-31 | 2007-09-18 | Lg.Philips Lcd Co., Ltd. | Method of winding coil and transformer and inverter liquid crystal display having coil wound using the same |
US20080308662A1 (en) * | 2007-06-13 | 2008-12-18 | Delta Electronics, Inc. | Transformer and coil winding method thereof |
WO2014116127A1 (en) * | 2013-01-28 | 2014-07-31 | Toroidy.Pl Transformatory Lech Lachowski | High voltage serial toroidal transformer |
EP3447507A1 (de) * | 2017-08-22 | 2019-02-27 | Alpha Elektrotechnik AG | Mobile teilentladung-prüfeinrichtung |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5838220A (en) * | 1997-07-16 | 1998-11-17 | Toroids International Hong Kong Ltd | Toroidal transformer with space saving insulation and method for insulating a winding of a toroidal transformer |
KR20140051277A (ko) * | 2011-06-29 | 2014-04-30 | 이씨알테크 홀딩스 피티와이 리미티드 | 전력 공급부 회로에서 전력 소모를 감소시키는 시스템 및 방법 |
EP2645384B1 (de) * | 2012-03-27 | 2018-11-14 | Siemens Aktiengesellschaft | Transformator und Verfahren zur Herstellung eines Transformators |
JP6069873B2 (ja) * | 2012-04-03 | 2017-02-01 | Tdk株式会社 | 昇圧トランス |
RU2547808C2 (ru) * | 2013-07-24 | 2015-04-10 | Открытое акционерное общество "ОКБ-Планета" ОАО "ОКБ-Планета" | Катушка индуктивности |
DE102014202531A1 (de) * | 2014-02-12 | 2015-08-13 | Siemens Aktiengesellschaft | Hochspannungstransformatorvorrichtung mit einstellbarer Streuung, Wechselrichterschaltung mit einer Hochspannungstransformatorvorrichtung und Verwendung einer Hochspannungstransformatorvorrichtung |
US10629357B2 (en) * | 2014-06-23 | 2020-04-21 | Ferric Inc. | Apparatus and methods for magnetic core inductors with biased permeability |
US9711276B2 (en) * | 2014-10-03 | 2017-07-18 | Instrument Manufacturing Company | Resonant transformer |
US10320279B2 (en) * | 2015-12-02 | 2019-06-11 | Astec International Limited | Power supplies and methods for reducing common mode noise |
CN205595200U (zh) * | 2016-04-28 | 2016-09-21 | 王大彦 | 一种磁屏蔽环形变压器 |
US10998124B2 (en) * | 2016-05-06 | 2021-05-04 | Vishay Dale Electronics, Llc | Nested flat wound coils forming windings for transformers and inductors |
FR3058255B1 (fr) * | 2016-11-02 | 2018-12-14 | Supergrid Institute | Transformateur electrique haute tension a boitier isolant |
CN206460860U (zh) * | 2017-01-25 | 2017-09-01 | 台达电子企业管理(上海)有限公司 | 高压变压器及电子电力装置 |
-
2019
- 2019-05-13 AT ATA50429/2019A patent/AT522601A1/de not_active Application Discontinuation
-
2020
- 2020-05-13 CA CA3139358A patent/CA3139358A1/en active Pending
- 2020-05-13 EP EP20727178.4A patent/EP3970168A1/de active Pending
- 2020-05-13 KR KR1020217040647A patent/KR20220006636A/ko not_active Application Discontinuation
- 2020-05-13 US US17/610,308 patent/US20220246352A1/en active Pending
- 2020-05-13 WO PCT/EP2020/063299 patent/WO2020229523A1/de unknown
- 2020-05-13 MX MX2021013787A patent/MX2021013787A/es unknown
- 2020-05-13 CN CN202080035797.2A patent/CN113841209A/zh active Pending
- 2020-05-13 BR BR112021022581A patent/BR112021022581A2/pt unknown
- 2020-05-13 AU AU2020273556A patent/AU2020273556B2/en active Active
-
2021
- 2021-11-17 ZA ZA2021/09185A patent/ZA202109185B/en unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH353454A (de) * | 1957-03-05 | 1961-04-15 | Micafil Ag | Wickelmaschine zum Bewickeln von zylindrischen oder vieleckigen Spulenkörpern mit Draht mit der Pilgerschrittwicklung |
AT231555B (de) * | 1961-02-08 | 1964-02-10 | Siemens Ag | In einen Gießharzkörper eingebettete Hochspannungswicklung für Transformatoren, Wandler od. dgl. |
US7271691B2 (en) * | 2001-03-31 | 2007-09-18 | Lg.Philips Lcd Co., Ltd. | Method of winding coil and transformer and inverter liquid crystal display having coil wound using the same |
US20080308662A1 (en) * | 2007-06-13 | 2008-12-18 | Delta Electronics, Inc. | Transformer and coil winding method thereof |
WO2014116127A1 (en) * | 2013-01-28 | 2014-07-31 | Toroidy.Pl Transformatory Lech Lachowski | High voltage serial toroidal transformer |
EP3447507A1 (de) * | 2017-08-22 | 2019-02-27 | Alpha Elektrotechnik AG | Mobile teilentladung-prüfeinrichtung |
Also Published As
Publication number | Publication date |
---|---|
AU2020273556B2 (en) | 2023-02-02 |
AT522601A1 (de) | 2020-12-15 |
CA3139358A1 (en) | 2020-11-19 |
EP3970168A1 (de) | 2022-03-23 |
US20220246352A1 (en) | 2022-08-04 |
BR112021022581A2 (pt) | 2022-01-04 |
ZA202109185B (en) | 2022-09-28 |
MX2021013787A (es) | 2022-03-11 |
KR20220006636A (ko) | 2022-01-17 |
CN113841209A (zh) | 2021-12-24 |
AU2020273556A1 (en) | 2022-01-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2133888B1 (de) | Prüfanordnung zur Wechselspannungsprüfung von elektrischen Hochspannungskomponenten | |
DE69919723T2 (de) | Induktiver magnetischer Sensor mit mehreren enggekoppelten Wicklungen | |
EP2428967B1 (de) | Transformatorwicklung | |
DE102013100246A1 (de) | Stromsensor- und Entstörfilteranordnung, insbesondere für transformatorlose Photovoltaik-Wechselrichter | |
DE102013106099A1 (de) | Stromsensoranordnung | |
EP3008474B1 (de) | Stromsensoranordnung mit messspulen | |
DE2512369C2 (de) | Elektrischer Generator | |
EP1529296B1 (de) | Wicklungsanordnung | |
DE2457797A1 (de) | Als strom- und/oder spannungswandler geeigneter wandler | |
WO2020229523A1 (de) | Hochspannungstransformator, verfahren zum herstellen eines hochspannungstransformators sowie prüfsystem und prüfsignalvorrichtung mit einem hochspannungstransformator | |
EP2863403B1 (de) | Transformator | |
DE102011075456B4 (de) | Summenstromwandler und Fehlerstromschutzschalter | |
DE2018981C3 (de) | Mehrphasiger Generator | |
DE2530892C3 (de) | Teilchen-Beschleuniger für geladene Teilchen | |
DD145975A1 (de) | Hochspannungs-transformations-und leichrichtereinrichtung | |
DE571127C (de) | Schaltungsanordnung zur Beseitigung von Rundfunkstoerungen | |
WO2016000991A1 (de) | Vorrichtung zum induktiven laden eines elektrischen speichers | |
EP3420570B1 (de) | Elektrisches hochspannungsgerät mit einer regelwicklungsgruppe | |
EP3402062B1 (de) | Kopplung von mindestens zwei modularen multilevel umrichtern | |
WO2009138099A1 (de) | Koppelung von transformatorwicklungsmodulen | |
DE19510659C1 (de) | Anordnung zur Ankopplung eines Rundsteuersenders | |
EP0163907A1 (de) | Hochspannungswicklung mit gesteuerter Spannungsverteilung für Transformatoren | |
WO2019180159A1 (de) | Netzgerät zum betrieb an einem elektrischen wechselstromnetz | |
WO2017097351A1 (de) | Hochenergie-stossstrombegrenzer | |
AT61581B (de) | Sicherheitsschaltung für elektrische Kabelleitungen. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 20727178 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 3139358 Country of ref document: CA |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112021022581 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: 20217040647 Country of ref document: KR Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 2020727178 Country of ref document: EP Effective date: 20211213 |
|
ENP | Entry into the national phase |
Ref document number: 112021022581 Country of ref document: BR Kind code of ref document: A2 Effective date: 20211110 |
|
ENP | Entry into the national phase |
Ref document number: 2020273556 Country of ref document: AU Date of ref document: 20200513 Kind code of ref document: A |