EP3863037A1 - Neues zubehörteil für schutzschalterstatusvoralarm und -überwachung - Google Patents

Neues zubehörteil für schutzschalterstatusvoralarm und -überwachung Download PDF

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Publication number
EP3863037A1
EP3863037A1 EP21156345.7A EP21156345A EP3863037A1 EP 3863037 A1 EP3863037 A1 EP 3863037A1 EP 21156345 A EP21156345 A EP 21156345A EP 3863037 A1 EP3863037 A1 EP 3863037A1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
handle
trip arm
state
detection module
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.)
Pending
Application number
EP21156345.7A
Other languages
English (en)
French (fr)
Inventor
Yu Chen
Zhi Chen
Xiang Dong Lu
Liang Zhang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP3863037A1 publication Critical patent/EP3863037A1/de
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device
    • H01H2071/042—Means for indicating condition of the switching device with different indications for different conditions, e.g. contact position, overload, short circuit or earth leakage
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device
    • H01H2071/048—Means for indicating condition of the switching device containing non-mechanical switch position sensor, e.g. HALL sensor

Definitions

  • the present invention relates to the field of electronic components, in particular to a circuit breaker accessory and a circuit breaker assembly.
  • a circuit breaker is a switch apparatus that is capable of turning on, carrying and turning off a current under normal circuit conditions, and capable of turning on, carrying and turning off a current under abnormal circuit conditions within a specified time.
  • Circuit breakers are generally classed as high-voltage circuit breakers and low-voltage circuit breakers, according to their range of use. Circuit breakers can be used to distribute electrical energy, activate asynchronous motors infrequently, and protect power supply lines and motors, etc. When a fault such as a serious overload or short circuit and undervoltage occurs, a circuit breaker can automatically break the circuit; the function thereof is equivalent to a combination of a fuse-type switch and an over/underheating relay, etc.
  • a circuit breaker accessory cooperating with the circuit breaker can detect the state of the circuit breaker.
  • an existing circuit breaker accessory can only provide simple information such as circuit breaker off, circuit breaker on and circuit breaker tripped; it is unable to determine the type of circuit breaker tripping.
  • the embodiments of the present invention propose a circuit breaker accessory and a circuit breaker assembly.
  • a circuit breaker accessory comprising:
  • the circuit breaker accessory in an embodiment of the present invention can detect a temperature rise close to the circuit breaker thermal system, in order to alert the user in advance to adjust the circuit breaker load.
  • the circuit breaker accessory in an embodiment of the present invention can detect a temperature rise at a point close to the circuit breaker contact, in order to alert the user in advance with regard to the contact reliability of the circuit breaker contact.
  • the trip arm detection module comprises:
  • the embodiments of the present invention also propose a specific structure of the trip arm detection module, to facilitate implementation.
  • the handle detection module comprises:
  • the embodiments of the present invention also propose a specific structure of the handle detection module, to facilitate implementation.
  • a circuit breaker assembly comprising:
  • the circuit breaker assembly in embodiments of the present invention can determine the circuit breaker tripping type, thereby making it easy for a user to determine the cause of the fault quickly.
  • the circuit breaker accessory further comprises:
  • circuit breaker assembly in embodiments of the present invention can also determine a state of the circuit breaker jointly on the basis of whether the trip arm detection module has detected the movement track of the trip arm, and the handle position detected by the handle detection module.
  • the circuit breaker accessory further comprises:
  • a temperature rise close to a circuit breaker thermal system can be detected, so as to alert the user in advance to adjust a load of the circuit breaker; a temperature rise at a point close to a circuit breaker contact can also be detected, so as to alert the user in advance regarding the contact reliability of the circuit breaker contact.
  • the trip arm detection module comprises: a trip arm connection component, configured to be connected to the trip arm of the circuit breaker; a first magnet, arranged in the trip arm connection component; and a first Hall sensor, arranged at a periphery of a movement track of the trip arm connection component;
  • the handle detection module comprises: a handle connection component, configured to be connected to the handle of the circuit breaker; a second magnet, arranged in the handle connection component; a second Hall sensor, arranged at a first position at a periphery of a movement track of the handle connection component, wherein the first position corresponds to the handle being in the ON state; and a third Hall sensor, arranged at a second position at a periphery of the movement track of the handle connection component, wherein the second position corresponds to the handle being in the OFF state.
  • the embodiments of the present invention also propose specific structures of the trip arm detection module and handle detection module, to facilitate implementation.
  • circuit breaker accessory 11 trip arm detection module 12 control module 13 handle detection module 14 first temperature detection module 15 second temperature detection module 16 communication module 17 human-machine interface module 20 circuit breaker assembly 21 circuit breaker 211 trip arm 212 handle 213 thermal system 214 contact 111 trip arm connection assembly 112 first magnet 113 first Hall sensor 131 handle connection assembly 132 second magnet 133 second Hall sensor 134 third Hall sensor 140 first connector of LED 141 second connector of LED 142 MCU 143 communication chip 144 NTC temperature sensor 150 printed circuit board
  • a circuit breaker accessory cooperating with a circuit breaker in the prior art is essentially a purely mechanical device using a micro switch, and therefore can only provide simple information such as circuit breaker off, circuit breaker on and circuit breaker tripped; it is unable to determine the type of circuit breaker tripping.
  • the circuit breaker accessory in the prior art cannot determine the specific cause of tripping, e.g. cannot determine whether the tripping is caused by residual current or by an overcurrent fault, etc.
  • a circuit breaker accessory capable of determining the type of circuit breaker tripping on the basis of a movement track of a trip arm of the circuit breaker is proposed, so as to make it easy for a user to deal with the tripping fault quickly.
  • tripping types include tripping caused by residual current faults, tripping caused by overcurrent faults, etc.
  • the circuit breaker accessory in an embodiment of the present invention can also detect a closed state, an open state and a freely tripped state of the circuit breaker, e.g. manually opened, freely tripped when a handle is blocked, etc.
  • the circuit breaker accessory in an embodiment of the present invention also has a pre-alarm function. For example: a temperature rise close to a circuit breaker thermal system can be detected, so as to alert the user in advance to adjust a load of the circuit breaker; a temperature rise at a point close to a circuit breaker contact can also be detected, so as to alert the user in advance to pay attention to the contact reliability of the circuit breaker contact, etc.
  • Fig. 1 is a module diagram of the circuit breaker accessory of the present invention.
  • the circuit breaker accessory 10 comprises:
  • one or more tripping type tracks corresponding to one or more tripping types respectively are pre-stored in the control module 12.
  • the control module 12 matches the movement track detected by the trip arm detection module 11 to a pre-stored tripping type track, and determines the tripping type of the circuit breaker on the basis of the matching result.
  • a tripping type track corresponding to overcurrent fault tripping is a single-line path; a tripping type track corresponding to residual current fault tripping is a back-and-forth alternating path.
  • An overcurrent fault tripping type track manifested as a single-line path, and a residual current fault tripping type track manifested as a back-and-forth alternating path, are stored in the control module 12.
  • the trip arm detection module 11 detects that the movement track of the trip arm is a single-line path of movement from a point A to a point B (i.e.
  • the control module determines, via a path matching operation, that the circuit breaker tripping type is tripping caused by an overcurrent fault.
  • the trip arm detection module 11 detects that the movement track of the trip arm is a back-and-forth changing path of movement from point A to point B and then change from point B to point A
  • the control module determines, via path matching, that the circuit breaker tripping type is tripping caused by a residual current fault.
  • the circuit breaker accessory 10 further comprises a handle detection module 13.
  • the handle detection module 13 is connected to a handle of the circuit breaker, and configured to detect a position of the handle; wherein the control module 12 is further configured to determine a state of the circuit breaker jointly on the basis of whether the trip arm detection module 11 has detected a movement track of the trip arm, and the handle position detected by the handle detection module 13, for example, a freely tripped state when the handle is blocked, a normally tripped state and a manually opened state, etc.
  • control module 12 may be implemented as comprising one or more central processors or one or more field-programmable gate arrays, wherein the field-programmable gate array integrates one or more central processor cores.
  • the central processor or central processor core may be implemented as a CPU, MCU or digital signal processor (DSP), etc.
  • the circuit breaker accessory 10 further comprises: a first temperature detection module 14, arranged in a peripheral environment of a thermal system of the circuit breaker, and configured to detect a first temperature value; wherein the control module 12 is further configured to generate a first alarm prompt for prompting adjustment of a circuit breaker load when the first temperature value is greater than a first predetermined threshold.
  • the thermal system of the circuit breaker may contain a bimetallic strip.
  • the first predetermined threshold is preferably an adjustable empirical value.
  • the circuit breaker accessory in an embodiment of the present invention can detect a temperature rise close to the circuit breaker thermal system, in order to alert the user in advance to adjust the circuit breaker load.
  • the circuit breaker accessory 10 further comprises: a second temperature detection module 15, arranged in a peripheral environment of a contact of the circuit breaker, and configured to detect a second temperature value; wherein the control module 12 is further configured to generate a second alarm prompt for prompting contact reliability when the second temperature value is greater than a second predetermined threshold.
  • the second predetermined threshold is preferably an adjustable empirical value.
  • the circuit breaker accessory in an embodiment of the present invention can detect a temperature rise at a point close to the circuit breaker contact, in order to alert the user in advance with regard to the contact reliability of the circuit breaker contact.
  • the trip arm detection module 11 comprises: a trip arm connection component, configured to be connected to the trip arm of the circuit breaker; a first magnet, arranged in the trip arm connection component; and a first Hall sensor, arranged at a periphery of a movement track of the trip arm connection component.
  • the trip arm connection component is connected to the trip arm at the circuit breaker, and the trip arm connection component can move as the trip arm moves. Different tripping faults will cause the trip arm to have different movement tracks, such that the trip arm connection component has correspondingly different movement tracks.
  • the first magnet is inserted into the trip arm connection component. When the trip arm connection component moves with the trip arm, the first Hall sensor will detect a change in the magnetic field of the first magnet, and indirectly detect the movement track of the trip arm on the basis of the change in magnetic field.
  • the handle detection module 13 comprises: a handle connection component, configured to be connected to the handle of the circuit breaker; a second magnet, arranged in the handle connection component; a second Hall sensor, arranged at a first position at a periphery of a movement track of the handle connection component, wherein the first position corresponds to the handle being in the ON state; and a third Hall sensor, arranged at a second position at a periphery of the movement track of the handle connection component, wherein the second position corresponds to the handle being in the OFF state.
  • the handle connection component is connected to the handle at the circuit breaker, and the handle connection component can move as the handle moves.
  • the second magnet is inserted into the handle connection component.
  • the handle connection component moves to the first position with the handle, and the second Hall sensor detects that the handle connection component moves to the first position with the handle on the basis of detecting a change in the magnetic field of the second magnet.
  • the handle connection component moves to the second position with the handle, and the third Hall sensor detects that the handle connection component moves to the second position with the handle on the basis of detecting a change in the magnetic field of the second magnet.
  • the circuit breaker accessory 10 further comprises a communication module 16; the communication module 16 sends data to a data collector by means of a wireless interface or wired interface.
  • the data sent by the communication module 16 may comprise: handle position, tripping type, circuit breaker state and temperature rise data, etc.
  • the wired interface comprises at least one of the following: a universal serial bus interface, controller local area network interface or serial port, etc.
  • the wireless interface comprises at least one of the following: an infrared interface, near field communication interface, Bluetooth interface, Zigbee interface, wireless broadband interface, etc.
  • the communication module 16 may be implemented as a communication chip.
  • the circuit breaker accessory 10 may further comprise a human-machine interface (HMI) module 17.
  • HMI human-machine interface
  • the HMI module 17 is configured to display to the user the first alarm prompt, second alarm prompt, handle position, tripping type, circuit breaker state and temperature rise data, etc.
  • the HMI module 17 may be implemented as a light emitting diode (LED) or LED array.
  • a button for resetting the circuit breaker accessory may also be provided on the HMI module 17.
  • an embodiment of the present invention also proposes a circuit breaker assembly.
  • Fig. 2 is a structural diagram of the circuit breaker assembly of the present invention.
  • the circuit breaker assembly 20 comprises:
  • the circuit breaker accessory 10 further comprises: a handle detection module 13, connected to the handle 212 of the circuit breaker and configured to detect a position of the handle 212; wherein the control module 12 is further configured to:
  • the circuit breaker accessory 10 further comprises: a first temperature detection module 14, arranged in a peripheral environment of a thermal system 213 of the circuit breaker 21, and configured to detect a first temperature value; wherein the control module 12 is further configured to generate a first alarm prompt for prompting adjustment of a circuit breaker load when the first temperature value is greater than a first predetermined threshold.
  • the circuit breaker accessory 10 further comprises: a second temperature detection module 15, arranged in a peripheral environment of a contact 214 of the circuit breaker 21, and configured to detect a second temperature value; wherein the control module 12 is further configured to generate a second alarm prompt for prompting contact reliability when the second temperature value is greater than a second predetermined threshold.
  • circuit breaker accessory 10 A typical practical example of the circuit breaker accessory 10 is described in detail below with specific electronic components.
  • Fig. 3 is a demonstrative structural diagram of the circuit breaker accessory of the present invention.
  • a circuit breaker accessory as shown in Fig. 1 is arranged in a printed circuit board 150.
  • the trip arm detection module of the circuit breaker accessory comprises: a trip arm connection component 111 made of plastic, a first magnet 112 and a first Hall sensor 113.
  • the trip arm connection component 111 is joined to the trip arm at the circuit breaker.
  • the first magnet 112 is inserted into the trip arm connection component 111;
  • the first Hall sensor 113 is arranged on the printed circuit board 150 at a peripheral position of a movement track of the trip arm connection component 111, e.g. arranged at a lower region of the first magnet 112. Different tripping faults will cause the trip arm connection component 111 to have different movement tracks.
  • the first Hall sensor 113 will detect a change in the magnetic field of the first magnet 112, and thereby detect the movement track of the trip arm.
  • the handle detection module of the circuit breaker accessory comprises: a handle connection component 131 made of plastic, a second magnet 132, a second Hall sensor 133 and a third Hall sensor 134.
  • the handle connection component 131 is joined to the handle of the circuit breaker.
  • the second magnet 132 is inserted into the handle connection component 131.
  • the second Hall sensor 133 is arranged on the printed circuit board 150 at a position corresponding to the handle being in the ON state; the third Hall sensor 134 is arranged on the printed circuit board 150 at a position corresponding to the handle being in the OFF state. If the circuit breaker handle moves, the handle connection component 131 will also move correspondingly.
  • the second Hall sensor 133 and third Hall sensor 134 can detect the handle in the ON state or OFF state respectively.
  • the control module of the circuit breaker accessory is implemented as an MCU 142.
  • the MCU 142 can determine a tripping type of the circuit breaker on the basis of a movement track detection result of the trip arm detection module, and can also determine a state of the circuit breaker jointly on the basis of whether the trip arm detection module has detected a movement track of the trip arm, and the handle position detected by the handle detection module. For example, when the MCU 142 discovers that the trip arm detection module has detected a movement track (i.e. discovers tripping), and determines that the handle is in the ON state on the basis of the handle position detected by the handle detection module, the MCU 142 identifies free tripping when the handle is blocked.
  • An NTC temperature sensor 144 is arranged close to a bimetallic strip of the circuit breaker, in order to acquire a relative temperature of the bimetallic strip.
  • the MCU 142 issues an alarm prompt by means of an LED connected to the printed circuit board 150 via a first connector 140 and a second connector 141.
  • the MCU 142 can also send handle position, tripping type, circuit breaker state and temperature rise data, etc. to a data collector by means of a communication chip 143.
  • the communication chip 143 may be implemented as a Zigbee chip, Bluetooth chip, etc.
  • the MCU 142 can also acquire configuration data from the data collector.
  • circuit breaker accessory has been described demonstratively above with specific electronic components, but those skilled in the art will realize that the abovementioned electronic components may be subjected to various changes or substitutions; no restrictions are imposed in this regard in embodiments of the present invention.
  • a micro switch can replace the first magnet 112 and first Hall sensor 113.
  • a micro switch can replace the second magnet 132, second Hall sensor 133 and third Hall sensor 134.
  • the NTC temperature sensor 144 may also be replaced by a semiconductor temperature sensor, etc.
  • Hardware modules in the embodiments may be realized mechanically or electronically.
  • one hardware module may comprise a specially designed permanent circuit or logic device (such as a dedicated processor, such as an FPGA or ASIC) for completing a specific operation.
  • the hardware module may also comprise a programmable logic device or circuit that is temporarily configured by software (e.g. comprising a general processor or another programmable processor) for executing a specific operation.
  • software e.g. comprising a general processor or another programmable processor
  • the choice of whether to specifically use a mechanical method, or a dedicated permanent circuit, or a temporarily configured circuit (e.g. configured by software) to realize the hardware module can be decided according to considerations of cost and time.

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EP21156345.7A 2020-02-10 2021-02-10 Neues zubehörteil für schutzschalterstatusvoralarm und -überwachung Pending EP3863037A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010084982.2A CN113257630A (zh) 2020-02-10 2020-02-10 一种断路器附件和断路器组件

Publications (1)

Publication Number Publication Date
EP3863037A1 true EP3863037A1 (de) 2021-08-11

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ID=74586935

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21156345.7A Pending EP3863037A1 (de) 2020-02-10 2021-02-10 Neues zubehörteil für schutzschalterstatusvoralarm und -überwachung

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EP (1) EP3863037A1 (de)
CN (1) CN113257630A (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4430382A1 (de) * 1994-08-26 1996-02-29 Siemens Ag Elektromechanisches Schaltgerät
FR2940517A1 (fr) * 2008-12-19 2010-06-25 Schneider Electric Ind Sas Dispositif de telecommande pourvu de moyens de signalisation et disjoncteur telecommande equipe d'un tel dispositif de telecommande
WO2015020653A1 (en) * 2013-08-08 2015-02-12 Schneider Electric USA, Inc. Circuit protective device fault diagnostic translator

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JP3807042B2 (ja) * 1997-08-18 2006-08-09 富士電機機器制御株式会社 漏電しゃ断器
CN1306535C (zh) * 2004-02-11 2007-03-21 正泰集团股份有限公司 一种剩余电流动作脱扣断路器的辅助脱扣器的动作机构
CN103337423B (zh) * 2013-07-16 2015-11-18 浙江正泰电器股份有限公司 双动作电磁脱扣器
CN204029739U (zh) * 2014-07-17 2014-12-17 正泰集团股份有限公司 一种带有剩余电流脱扣装置的低压断路器
CN106329464B (zh) * 2015-06-30 2019-01-01 施耐德电气工业公司 具有故障区分指示的断路器
CN207336029U (zh) * 2017-04-28 2018-05-08 浙江正泰电器股份有限公司 断路器的脱扣力测试装置
CN207966906U (zh) * 2018-03-22 2018-10-12 诚硕电气有限公司 一种带剩余电流保护动作断路器
CN109100646A (zh) * 2018-08-17 2018-12-28 国网江苏省电力有限公司检修分公司 一种高压断路器故障诊断方法
CN109193585B (zh) * 2018-09-29 2019-11-12 国网四川省电力公司电力科学研究院 一种高压交流线路保护跳闸序列识别方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4430382A1 (de) * 1994-08-26 1996-02-29 Siemens Ag Elektromechanisches Schaltgerät
FR2940517A1 (fr) * 2008-12-19 2010-06-25 Schneider Electric Ind Sas Dispositif de telecommande pourvu de moyens de signalisation et disjoncteur telecommande equipe d'un tel dispositif de telecommande
WO2015020653A1 (en) * 2013-08-08 2015-02-12 Schneider Electric USA, Inc. Circuit protective device fault diagnostic translator

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