EP4160649A1 - Schutzschalter - Google Patents

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Publication number
EP4160649A1
EP4160649A1 EP22198429.7A EP22198429A EP4160649A1 EP 4160649 A1 EP4160649 A1 EP 4160649A1 EP 22198429 A EP22198429 A EP 22198429A EP 4160649 A1 EP4160649 A1 EP 4160649A1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
data processing
processing module
sensor
breaker
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
EP22198429.7A
Other languages
English (en)
French (fr)
Inventor
Yong Liu
Li Wan
Rongmin 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.)
ABB Schweiz AG
Original Assignee
ABB Schweiz 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 ABB Schweiz AG filed Critical ABB Schweiz AG
Publication of EP4160649A1 publication Critical patent/EP4160649A1/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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • 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
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0062—Testing or measuring non-electrical properties of switches, e.g. contact velocity
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0062—Testing or measuring non-electrical properties of switches, e.g. contact velocity
    • H01H2011/0068—Testing or measuring non-electrical properties of switches, e.g. contact velocity measuring the temperature of the switch or parts thereof
    • 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
    • H01H2071/044—Monitoring, detection or measuring systems to establish the end of life of the switching device, can also contain other on-line monitoring systems, e.g. for detecting mechanical failures

Definitions

  • Embodiments of the present disclosure relate to the field of electrical equipment in general, and more specifically, to a circuit breaker.
  • the working condition of a circuit breaker is critical to its control.
  • working condition of the circuit breaker is collected by sensors and then processed by the data processing module (e.g., concentrator) for subsequent use by users.
  • the existing circuit breakers are free of the data processing module. In such case, after purchasing a circuit breaker, the users need to separately configure the data processing module according to the usage of the sensor in the circuit breaker and select a corresponding output device based on the data processing module to cooperate therewith, which increases the selection cost.
  • the purpose of the present disclosure is to provide a circuit breaker that addresses at least partially the above and other potential issues.
  • a circuit breaker comprises: a frame; a breaker main body configured to connect and disconnect a circuit; a sensor, connected to the breaker main body and configured to collect state parameters of the breaker main body; and a data processing module detachably mounted on the frame and electrically connected to the sensor, wherein the data processing module is configured to process state parameters collected by the sensor and output processed state parameters to a device outside the circuit breaker.
  • the data processing module is arranged inside the circuit breaker, such that the circuit breaker can process the data collected by the sensor and then directly output the data for use by the users. Accordingly, the full digital function of the circuit breaker is realized, and the state parameters of the circuit breaker can be output in real time for users to use.
  • the management of the health condition of the circuit breaker is implemented, continuity and reliability of the operations are promoted, the maintenance cycle is extended, and the maintenance costs can be reduced.
  • the data processing module and the frame are connected by fasteners.
  • the data processing module can be disposed inside the circuit breaker in the simplest way, which reduces the installation complexity.
  • the data processing module includes a concentrator.
  • the data processing module includes a plug adapted to connect the data processing module to the device external to the circuit breaker. Through the above embodiment, the data of the data processing module can be output more easily.
  • the plug includes a serial interface.
  • the data processing module is connected to the sensor in a wired manner. Therefore, a reliable connection of the circuit is ensured.
  • the data processing module is connected to the sensor in a wireless manner.
  • the above embodiment can enrich the connection modes of the circuit, reduce the wiring inside the circuit breaker and decrease the electromagnetic interference (EMI) in the circuit breaker.
  • EMI electromagnetic interference
  • the senor includes a current sensor configured to detect currents passing through the breaker main body, and the data processing module is configured to generate indication information in response that the currents exceed a current threshold. Accordingly, potential risks of the circuit breaker can be determined in advance in combination with dynamics of the running currents.
  • the senor includes a temperature sensor configured to detect the temperature of the breaker main body, and the data processing module is configured to generate indication information in response that the temperature exceeds a temperature threshold.
  • the senor includes a state sensor configured to monitor a mechanical state of the breaker main body, and the data processing module is configured to generate indication information in response to a change of the mechanical state.
  • the mechanical motion state of the circuit breaker is monitored to further quantize the health condition of the circuit breaker, effectively identify the early failure of the mechanical component and ensure normal operations of the circuit breaker.
  • the senor includes a secondary device state sensor configured to monitor a state of a secondary device of the breaker main body, and the data processing module is configured to generate indication information based on the state of the secondary device.
  • the senor includes a force sensor (e.g. a pressure sensor) configured to monitor a contact force (e.g. a contact pressure) of the breaker main body, and the data processing module is configured to generate indication information in response to a change of the contact force.
  • a force sensor e.g. a pressure sensor
  • a contact force e.g. a contact pressure
  • the data processing module is configured to generate indication information in response to a change of the contact force.
  • the data processing module analyzes a health condition of the circuit breaker according to the state parameters and displays a residual electrical endurance of the circuit breaker.
  • the above embodiment can promote continuity and reliability of the operations, extend the maintenance periods and reduce the maintenance costs.
  • the proposed circuit breaker implements the full digital function, such that the monitoring data of the sensor can be directly output for use by the users without configurations.
  • circuit breaker in accordance with example embodiments of the present disclosure is explained in detail below with reference to Figs. 1 and 2 .
  • Fig. 1 a structural diagram of the circuit breaker in accordance with embodiments of the present disclosure is demonstrated.
  • the circuit breaker 100 described here includes a frame 101, a breaker main body 102, sensors 103, 104, 105, 106 and a data processing module 107.
  • the frame 101 is used for mounting the sensors 103, 104, 105, 106 and the data processing module 107.
  • the breaker main body 102 is provided for connecting and disconnecting the circuit.
  • the sensors 103, 104, 105, 106 collect state parameters of the breaker main body, while the data processing module 107 processes the state parameters collected by the sensors 103, 104, 105, 106 and outputs the processed state parameters to a device outside the circuit breaker 100 for user to use.
  • the data processing module 107 may be a concentrator for acquiring data of the sensors (such as sensors 103, 104, 105, 106) mounted on the breaker main body 102, for data processing, storage and uploading.
  • the concentrator converts sensor data collected through the protocol into user-identifiable signal forms and outputs the converted signals. Besides, when the data satisfy a given condition, the concentrator outputs an indication signal. For example, when the data values collected by the temperature sensor are higher than a predetermined threshold, the concentrator may output an alarm signal.
  • the data processing module 107 analyzes a health condition of the circuit breaker 100 based on the state parameters output by the sensors and displays a residual electrical lifetime of the circuit breaker 100. In other embodiments, the data processing module 107 may be other data processing elements. This may be determined based on the specific design requirements and costs.
  • the data processing module 107 may be connected to the sensors in a wired manner, e.g., by cables.
  • the data processing module 107 may, for example, be connected to the sensors in a wireless manner, e.g., by WiFi. This may be determined according to the specific design requirements and costs.
  • the data processing module 107 may include a plug adapted to connect the data processing module 107 to the device outside the circuit breaker 100 (e.g., display), to upload the processed data to the external device for use by the user.
  • the plug includes a serial interface, such as RS-232, RS-485 etc.,, to fit common devices.
  • the data processing module 107 can include other types of connectors , to connect with the external device of the circuit breaker 100, e.g., connecting to a mobile phone outside the circuit breaker 100 via WiFi. As such, the data of the respective sensors may be observed via pages on the mobile phone. This may be determined according to the specific design requirements and costs.
  • the sensors 103, 104, 105, 106 are provided for monitoring a variety of state parameters of the breaker main body 102 for use by the user.
  • the health condition of the circuit breaker is managed by a multi-dimensional operation monitoring; health score and operation and maintenance advice and plan of the circuit breaker are provided to promote continuity and reliability of the operations, extend the maintenance period and reduce the maintenance costs.
  • the sensors include a temperature sensor 103 for detecting at least one of a temperature of the breaker main body 102, a temperature at a bus of a switch gear where the circuit breaker 100 is located and a temperature at a cable of the switch gear.
  • the data processing module 107 may output the alarm signal.
  • the temperature sensor 103 may be self-powered without additional wirings and maintenance.
  • the long-term stable operation of the temperature sensor is secured by using magnetic saturation techniques.
  • the temperature sensor 103 may adopt the radio frequency technique, to electrically isolate temperature-measuring units at high voltage side inside the sensor 103 from receiving units at low voltage side, thereby ensuring safety.
  • the temperature sensor 103 may be of other types, which may be determined according to the specific design requirements and costs.
  • the sensors also include a current sensor 106 for detecting working currents of the breaker main body 102. When the currents exceed a current threshold, the data processing module 107 generates indication information.
  • the sensors also include a secondary device state sensor which is configured to monitor the state of the secondary device of the breaker main body, such as currents and operation time of closing coils, opening coils and energy storage motors, so as to extract signature waveforms from current curves, identify incipient failure in the circuit breaker 100 and ensure safe operations.
  • the data processing module 107 When an incipient failure is identified, the data processing module 107 generates the indication information.
  • the current sensor 106 is a Hall sensor independent of the original control system and protection system of the circuit breaker 100. Such sensor will not affect the inherent reliability of the circuit breaker 100. In other embodiments, the current sensor 106 also may be of other types, which may be determined according to the specific design requirements and costs.
  • the sensors may include states sensors, e.g., attitude sensor 104 and transient sensor 105, which monitor the mechanical conditions of the breaker main body 102 to directly quantify the health condition of the circuit breaker 100, effectively identify the early failures of the mechanical component inside the circuit breaker 100 and ensure normal operations of the circuit breaker 100.
  • states sensors e.g., attitude sensor 104 and transient sensor 105
  • the data processing module 107 may output the alarm signals.
  • motion curves of the mechanical mechanism within the circuit breaker 100 extracted via the attitude sensor are used to monitor the motion state of the mechanical mechanism in real time and calculate single or multiple mechanical characteristic parameters of the circuit breaker 100, e.g., stroke, closing time, opening time, average closing speed, average opening speed, closing overstroke and opening rebound etc.
  • mechanical characteristic parameters of the circuit breaker 100 e.g., stroke, closing time, opening time, average closing speed, average opening speed, closing overstroke and opening rebound etc.
  • more parameters may be obtained, e.g., spring stroke, clearance of vacuum interrupter and contact force of vacuum interrupter etc.
  • the attitude sensor 104 may be angular sensor which detects the motion angle of the mechanical mechanism's motion within the circuit breaker 100.
  • the posture sensor 104 may be of other types, which may be determined according to the specific design requirements and costs.
  • the transient sensor 105 may be the force sensor that detects changes of the force of the mechanical mechanism within the circuit breaker 100.
  • the transient sensor 105 may be of other types, e.g., pressure sensor, configured to monitor contact pressure of the breaker main body 102, and the data processing module 107 is configured to generate indicated information in response to the change of the contact pressure. This may be determined according to the specific design requirements and costs.
  • FIG. 2 is referred to explain how the data processing module 107 is mounted.
  • Fig. 2 illustrates a schematic diagram related to the mounting of the data processing module within the circuit breaker in accordance with embodiments of the present disclosure.
  • the data processing module 107 and the frame 101 are connected via fasteners.
  • a threaded hole 109 is provided on a housing of the data processing module 107.
  • a through-hole 110 is also arranged at a corresponding position of the frame 101 where the data processing module 107 is mounted.
  • a screw 108 is mounted into the threaded hole 109 of the data processing module 107 via the through-hole 110 of the frame 101, such that the data processing module 107 is mounted on the frame 101.
  • the position of the frame 101 at which the data processing module 107 is mounted may be determined as per the specific design.
  • the data processing module 107 may be mounted in other ways.
  • a guide rail (not shown) is arranged on a sidewall inside the frame 101, and a mounting part is disposed on the guide rail and may slide on the guide rail.
  • the data processing module 107 may be mounted on and detached from the mounting part. In such way, the position of the data processing module 107 may be adjusted as required. This may be determined according to the specific design requirements and costs.
  • the data processing module is integrated inside the circuit breaker, such that various kinds of state parameters of the circuit breaker can be directly output to the external device for the convenience of users.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Breakers (AREA)
EP22198429.7A 2021-09-30 2022-09-28 Schutzschalter Pending EP4160649A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111160047.0A CN113690105A (zh) 2021-09-30 2021-09-30 断路器

Publications (1)

Publication Number Publication Date
EP4160649A1 true EP4160649A1 (de) 2023-04-05

Family

ID=78587466

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22198429.7A Pending EP4160649A1 (de) 2021-09-30 2022-09-28 Schutzschalter

Country Status (2)

Country Link
EP (1) EP4160649A1 (de)
CN (1) CN113690105A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4125106A1 (de) * 2021-07-27 2023-02-01 Abb Schweiz Ag Überwachungssystem für einen niederspannungs-, mittelspannungs- oder hochspannungsschutzschalter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6286377B1 (en) * 1999-03-12 2001-09-11 Eaton Corporation Method and apparatus for testing spring powered switches
US20090198459A1 (en) * 2006-10-31 2009-08-06 Siemens Energy & Automation, Inc. Multifunctional Residential Circuit Breaker
US20170047181A1 (en) * 2015-08-13 2017-02-16 Eaton Corporation Failure prediction device and method for vacuum circuit breakers
US20200194191A1 (en) * 2018-12-13 2020-06-18 Eaton Intelligent Power Limited Circuit interrupters with non-contact sensor systems for evaluating erosion of electrical contacts and related methods

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204290142U (zh) * 2014-12-24 2015-04-22 常熟开关制造有限公司(原常熟开关厂） 一种断路器
CN104502840A (zh) * 2015-01-04 2015-04-08 北京慧智神光科技有限公司 断路器健康诊断仪
CN104578430B (zh) * 2015-02-05 2017-07-04 常州洛高电器有限公司 用于断路器操作机构的在线监控装置
US20170047184A1 (en) * 2015-08-13 2017-02-16 Eaton Corporation Electromechanical device for prognostic and diagnostic health assessment of a power circuit breaker's power transmission and distribution system in real time

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6286377B1 (en) * 1999-03-12 2001-09-11 Eaton Corporation Method and apparatus for testing spring powered switches
US20090198459A1 (en) * 2006-10-31 2009-08-06 Siemens Energy & Automation, Inc. Multifunctional Residential Circuit Breaker
US20170047181A1 (en) * 2015-08-13 2017-02-16 Eaton Corporation Failure prediction device and method for vacuum circuit breakers
US20200194191A1 (en) * 2018-12-13 2020-06-18 Eaton Intelligent Power Limited Circuit interrupters with non-contact sensor systems for evaluating erosion of electrical contacts and related methods

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Publication number Publication date
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