EP3202005A2 - Overvoltage protection device with monitoring function - Google Patents
Overvoltage protection device with monitoring functionInfo
- Publication number
- EP3202005A2 EP3202005A2 EP15780802.3A EP15780802A EP3202005A2 EP 3202005 A2 EP3202005 A2 EP 3202005A2 EP 15780802 A EP15780802 A EP 15780802A EP 3202005 A2 EP3202005 A2 EP 3202005A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- overvoltage protection
- protection device
- overvoltage
- meßabgriff
- varistor
- 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- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/042—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage comprising means to limit the absorbed power or indicate damaged over-voltage protection device
-
- 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
- G01R31/1236—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 surge arresters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/043—Protection of over-voltage protection device by short-circuiting
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
-
- 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
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
- G01R31/2827—Testing of electronic protection circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
- H02H3/048—Checking overvoltage diverters
Definitions
- the invention relates to an overvoltage protection device with monitoring function.
- Overvoltage protection devices use, for example, varistors or transient voltage suppressor diodes (TVS diodes).
- TVS diodes transient voltage suppressor diodes
- Varistors are used e.g. used in overvoltage protection to limit overvoltages.
- the power range extends from small-signal measurement control loops to high-voltage applications. It is known that varistors are subject to aging, which is highly dependent on the installation conditions and the frequency and intensity of the stresses with surge pulses, which is why the aging behavior of varistors is not reliably predictable.
- Transient voltage suppressor diodes are used to limit overvoltages, preferably in the field of measurement control and regulation technology (MSR), in information technology (IT), and generally in circuits of lower electrical power, ie typically in a range of fine protection referred to as. It is known that TVS diodes are damaged in different ways when overloaded (e.g., by high surge current amplitudes). In addition to the so-called alloying in the short circuit, there are also damages in which the diodes remain relatively high impedance, up to the case that the junction capacitance of the diode is changed relevant.
- the energy (the flowing leakage current) may u.U. be insufficient to ensure a reliable separation.
- the varistors are provided with solid packages in which the overloaded varistor can be shorted and destroyed without environmental impact. That it is waived a shutdown and the destruction accepted.
- particularly pressure and temperature-resistant housing must be provided, which are on the one hand bulky and the other expensive.
- the thermal separation mechanisms react to the energy conversion (temperature increase) that results from fault currents / leakage currents. Depending on the degree of damage, the leakage current can rise very quickly.
- Varistors or a TVS diode expires faster than the thermal separator can (or can) react. In this case, there is a risk that the disconnecting device, the leakage current that can develop up to the short-circuit current of the network, no longer switch off. It can come to the complete, explosive destruction of the varistor or the TVS diode.
- Systems that do not monitor the thermal aging of the active overvoltage protection elements, but merely limit the impact of the short-circuit current through the Abieiter by means of solid metallic housings, are comparatively large and generate strong effects on the network, up to the failure by triggering system fuses.
- a disadvantage of the known monitoring method is also that not the actual damage of the varistors or diodes itself is detected, but only the result of damage detected or the consequences of total failure can be reduced.
- the monitoring of the temperature thus makes use of a secondary, time-delayed effect, which only comes to light when damage has already significantly advanced and thus an immediate danger is given.
- a forward-looking metrological detection of the damage of varistors and TVS diodes is very expensive because for a measurement, the component or the overvoltage protection component must usually be disconnected from the supply network, so that its electrical parameters can be measured and compared with specified limits , This is on the one hand complex, on the other hand usually connected with an interruption of the supply voltage of the device to be protected.
- the invention is based on the object to provide an overvoltage protection device with monitoring function, which avoids a disadvantage or several disadvantages of the prior art.
- 1 is a first schematic diagram of a device according to the invention according to a first embodiment
- 2 is a second schematic circuit diagram of a device according to the invention according to a second embodiment
- Fig. 3 shows the use of a multi-contact varistor in a circuit according to
- FIG. 2 is a diagrammatic representation of FIG. 1
- FIG. 4 shows the use of a further multi-contact varistor in a circuit according to FIG. 2, FIG.
- FIG. 5 shows the use of a further multi-contact varistor in a circuit according to FIG. 2, FIG.
- FIG. 6 shows the use of a further multi-contact varistor in a circuit according to FIG. 1, FIG.
- Fig. 7 shows an arrangement with a spark gap and a circuit according to
- FIG. 1 A first figure.
- the figures show an overvoltage protection device with monitoring function 1.
- the overvoltage protection device with monitoring function 1 has a parallel connection of two current branches A, B on.
- the first branch A has a first overvoltage protection Üi and a second overvoltage protection device Ü 2 , which are connected in series.
- Üi first overvoltage protection
- Ü 2 second overvoltage protection device
- the second current branch B has a third device E 3 and a fourth device E 4 , which are also connected in series.
- the first overvoltage device Ui and the third device E 3 have a first common voltage potential Pi during operation, while the second overvoltage device U 2 and the fourth device E 4 have a second common voltage potential P 2 in operation.
- a first measuring tap is provided between the first overvoltage protection device Üi and the second overvoltage protection device Ü 2
- a second measuring tap M 2 is provided between the third device E 3 and the fourth device E 4 , wherein the voltage between the first measuring tap Mi and the second measuring tap M 2, a signal Si, S 2 is derived that provides a state statement with respect to the first overvoltage protection device Ui and the second overvoltage protection device U 2 .
- the third means E 3 and the fourth means E 4 for example, a series circuit of complex resistors, such as capacitors, coils, resistors or combinations thereof, or, the third device E 3 and the fourth device E 4 are themselves implemented as third overvoltage protection device U 3 and fourth overvoltage protection device U 4 , as shown in FIGS. 2-5.
- the description of one design must always assume the other design as being included.
- Such an evaluation circuit can be constructed, for example, by means of an operational amplifier, wherein, for example, upon reaching a certain differential voltage, a switch-off is initiated and / or a local or remote signaling Si is provided.
- Local signaling can be provided, for example, by an optical and / or acoustic signal and / or a local display, for example an e-paper display, for condition signaling or for signaling measured values.
- Remote signaling may be provided, for example, by remote signaling via a signaling and / or automation bus, or generally by telecommunications.
- the evaluation unit C can be used via different algorithms to exclude errors and to adjust the sensitivity.
- Various switching and signaling thresholds can be easily generated, in particular with varistors, so that, for example, a detected low differential voltage can be taken as an indicator of incipient degradation of one of the overvoltage devices, so that e.g. at a regular revision a corresponding component is replaced.
- the measurement can be carried out during operation, so that a shutdown or removal of the overvoltage protection devices is not necessary.
- the derived signal S 2 is used as a switching signal for a turn-off device SW.
- the shutdown device may be a contactor or other suitable switch or it may be an externally triggerable fuse, as also invented by the Applicant and which is the subject of other applications.
- the first overvoltage protection device Üi and the second overvoltage protection device Ü 2 are each implemented as a subvaristor of a multicontactvaristor M-MOV and the first measurement pickup is in electrical contact with a (center) contact of the multicontactvaristor M-MOV.
- the sectionvaristoren are shown as similar, this is not mandatory.
- FIGS. 3 to 6 different measures of the multi-contact varistor M-MOV may be provided.
- two similar taps for contacting the measuring taps are provided in the ceramic of a varistor, so that two (virtual) current branches A, B form.
- An appropriate measure is shown for the case that are provided only in a current branches overvoltage protection devices, using the example of a single tap.
- a first varistor ceramic is arranged on another varistor, wherein the Meßabgriffe Mi M 2 are arranged between the varistor ceramics, which are additionally isolated in the intermediate space, so as to the current flow in branches A and B to separate.
- an overvoltage protection device 1 with a spark gap FS with one or more auxiliary electrodes H1, H2 is arranged.
- the overvoltage protection device 1 and the spark gap FS are connected in parallel and the first measuring tap of the overvoltage protection device 1 is connected to a first auxiliary starting electrode Hi of the spark gap FS.
- the impedance ratio (complex resistance ratio) of the first overvoltage protection device Üi to the second overvoltage protection device Ü 2 in normal operation may correspond to the impedance ratio (complex resistance ratio) of the third device E 3 to the fourth device E 4 .
- particularly simple evaluation circuits can be provided. It may, as shown in Figures 1, 6 and 7 to the device E3 and E4, be advantageous that one or both devices E3 and E4 can be detuned, so that in normal operation, the impedance ratios are equal.
- Such an adjustment can be made, for example, during manufacture or during commissioning. Alternatively or additionally, other measures, such as a matching network, may be used.
- the impedance ratios are not identical in normal operation.
- suitable threshold value switches or matching networks or also an (electronic) comparison with one or more previously determined / set values of the voltage between the first measuring tap and the second measuring tap M 2 can be used.
- the system proposed here allows constant, very accurate monitoring of the overvoltage protection components. Even small changes can be detected and corresponding information and measures can be initiated by means of a downstream evaluation unit.
- the measuring method can be used to perform an actual analysis, ie to provide technical data, on the other hand, direct mechanisms can be started from the measurement out, for example, lead to disconnect the arrester of power grid.
- the voltage signal between the first measuring tap of the current branch A and the second measuring tap M 2 of the current branch B can also be used directly for the actuation of actuators. This means that at the same time, out of the developing error, an actuator for disconnecting, short-circuiting or bridging SW can be controlled. This eliminates the time-critical detour via the detection of heating, so that much earlier can be responded to errors.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
- Protection Of Static Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014219913.1A DE102014219913A1 (en) | 2014-10-01 | 2014-10-01 | Surge protection device with monitoring function |
PCT/EP2015/072680 WO2016050907A2 (en) | 2014-10-01 | 2015-10-01 | Overvoltage protection device with monitoring function |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3202005A2 true EP3202005A2 (en) | 2017-08-09 |
Family
ID=54324947
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15780802.3A Withdrawn EP3202005A2 (en) | 2014-10-01 | 2015-10-01 | Overvoltage protection device with monitoring function |
Country Status (5)
Country | Link |
---|---|
US (1) | US10074973B2 (en) |
EP (1) | EP3202005A2 (en) |
CN (1) | CN107124912A (en) |
DE (1) | DE102014219913A1 (en) |
WO (1) | WO2016050907A2 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016125900A1 (en) | 2016-08-31 | 2018-03-01 | DEHN + SÖHNE GmbH + Co. KG. | Overvoltage protection device with monitoring and communication function |
DE102017204299B4 (en) * | 2017-03-15 | 2020-01-30 | Phoenix Contact Gmbh & Co. Kg | Disconnection device with a thermal disconnection device for an overvoltage protection element and an arrangement comprising a housing with a disconnection device with a thermal disconnection device and an overvoltage protection element |
DE102018114181A1 (en) | 2018-02-27 | 2019-08-29 | Dehn + Söhne Gmbh + Co. Kg | Method for assessing the condition and quality of low-voltage networks |
US10848053B2 (en) * | 2018-07-13 | 2020-11-24 | Kohler Co. | Robust inverter topology |
US10756532B2 (en) | 2018-07-13 | 2020-08-25 | Kohler Co. | Ground fault minimization |
DE102022100350A1 (en) | 2022-01-10 | 2023-07-13 | Phoenix Contact Gmbh & Co. Kg | Connector with a sensor element for detecting a leakage current, an arrangement with two connectors and a method for detecting a leakage current in a connector |
LU501225B1 (en) | 2022-01-10 | 2023-07-10 | Phoenix Contact Gmbh & Co | Connector with a sensor element for detecting a leakage current, an arrangement with two connectors and a method for detecting a leakage current in a connector |
US20240072561A1 (en) * | 2022-08-30 | 2024-02-29 | Schneider Electric USA, Inc. | Energy management for evse |
DE102022122121A1 (en) | 2022-09-01 | 2024-03-07 | Phoenix Contact Gmbh & Co. Kg | Connector with monitoring unit for detecting a leakage current, arrangement with two connectors and method for detecting a leakage current in a connector |
DE102022133639A1 (en) | 2022-12-16 | 2024-06-27 | Seg Automotive Germany Gmbh | Method and computing unit for checking an overvoltage protection circuit for an electrical machine and power converter arrangement |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3423444A1 (en) * | 1983-12-15 | 1985-09-05 | AVE S.p.A., Vestone, Brescia | Apparatus for the limiting of, and protection against overvoltages which occur, having a device which is contained therein for determining and indicating the end of the life of the apparatus caused by aging or a catastrophe |
DE102011109007A1 (en) * | 2011-07-29 | 2013-01-31 | Epcos Ag | Method for producing an electrical component and an electrical component |
DE102012022399A1 (en) * | 2012-11-16 | 2014-05-22 | Phoenix Contact Gmbh & Co. Kg | ignition circuit |
Family Cites Families (17)
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US3742419A (en) * | 1971-09-30 | 1973-06-26 | Gen Electric | Integral sensor for monitoring a metal oxide varistor |
US4912590A (en) * | 1989-05-01 | 1990-03-27 | Westinghouse Electric Corp. | Electrical surge suppressor and dual indicator apparatus |
US5617288A (en) * | 1995-06-05 | 1997-04-01 | Leviton Manufacturing Co., In. | Automatic surge suppressor disconnect protection system |
US5621309A (en) * | 1996-02-21 | 1997-04-15 | Electric Power Research Institute | Method for detecting a failed ZnO disk in a surge arrester network |
US5864545A (en) * | 1996-12-06 | 1999-01-26 | Altocom, Inc. | System and method for improving convergence during modem training and reducing computational load during steady-state modem operations |
US6477025B1 (en) * | 1999-10-12 | 2002-11-05 | Innovative Technology, Inc. | Surge protection device with thermal protection, current limiting, and failure indication |
CN2824403Y (en) * | 2005-11-03 | 2006-10-04 | 宋嘉鸿 | Temp controlled automatic charger with three colour LED |
FR2893196B1 (en) | 2005-11-04 | 2008-02-15 | Legrand France | ELECTRICAL DEVICE FOR PROTECTION AGAINST TRANSIENT OVERVOLTAGES |
CN201322982Y (en) * | 2008-12-19 | 2009-10-07 | 马劲波 | Temperature control alarm device |
DE102009004673A1 (en) * | 2009-01-12 | 2010-07-15 | Phoenix Contact Gmbh & Co. Kg | Snubber |
DE102010036909B3 (en) | 2010-08-06 | 2012-02-16 | Phoenix Contact Gmbh & Co. Kg | Thermal overload protection device |
DE102010038066B4 (en) | 2010-08-06 | 2012-05-03 | Phoenix Contact Gmbh & Co. Kg | Thermal overload protection arrangement |
CN102957129A (en) * | 2011-08-18 | 2013-03-06 | 上海晨兴希姆通电子科技有限公司 | Over-temperature protection terminal for control of hardware |
CN202309541U (en) * | 2011-11-01 | 2012-07-04 | 西安曼海特工业技术有限公司 | Alternating current regulated power supply possessing wide voltage input scope and lightning stroke and surge prevention function |
CN202333745U (en) * | 2011-11-24 | 2012-07-11 | 佛山市新基德电子厂有限公司 | Electric leakage protector with temperature protection |
US9276391B2 (en) * | 2013-07-21 | 2016-03-01 | The Boeing Company | Fault-tolerant self-indicating surge protection system for aircraft |
CN203466559U (en) * | 2013-08-27 | 2014-03-05 | 惠州市蓝微电子有限公司 | Lithium battery charging and discharging protection circuit |
-
2014
- 2014-10-01 DE DE102014219913.1A patent/DE102014219913A1/en active Pending
-
2015
- 2015-10-01 EP EP15780802.3A patent/EP3202005A2/en not_active Withdrawn
- 2015-10-01 CN CN201580052789.8A patent/CN107124912A/en active Pending
- 2015-10-01 US US15/508,624 patent/US10074973B2/en active Active
- 2015-10-01 WO PCT/EP2015/072680 patent/WO2016050907A2/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3423444A1 (en) * | 1983-12-15 | 1985-09-05 | AVE S.p.A., Vestone, Brescia | Apparatus for the limiting of, and protection against overvoltages which occur, having a device which is contained therein for determining and indicating the end of the life of the apparatus caused by aging or a catastrophe |
DE102011109007A1 (en) * | 2011-07-29 | 2013-01-31 | Epcos Ag | Method for producing an electrical component and an electrical component |
DE102012022399A1 (en) * | 2012-11-16 | 2014-05-22 | Phoenix Contact Gmbh & Co. Kg | ignition circuit |
Also Published As
Publication number | Publication date |
---|---|
WO2016050907A2 (en) | 2016-04-07 |
US10074973B2 (en) | 2018-09-11 |
US20170279269A1 (en) | 2017-09-28 |
CN107124912A (en) | 2017-09-01 |
WO2016050907A3 (en) | 2016-06-02 |
DE102014219913A1 (en) | 2016-04-07 |
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