WO2019091406A1 - Low-voltage power distribution device and method for controlling low-voltage power distribution device tripping - Google Patents

Low-voltage power distribution device and method for controlling low-voltage power distribution device tripping Download PDF

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Publication number
WO2019091406A1
WO2019091406A1 PCT/CN2018/114395 CN2018114395W WO2019091406A1 WO 2019091406 A1 WO2019091406 A1 WO 2019091406A1 CN 2018114395 W CN2018114395 W CN 2018114395W WO 2019091406 A1 WO2019091406 A1 WO 2019091406A1
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WO
WIPO (PCT)
Prior art keywords
power distribution
voltage power
distribution device
low
low voltage
Prior art date
Application number
PCT/CN2018/114395
Other languages
French (fr)
Chinese (zh)
Inventor
马锋
周磊
刘全和
双兵
伯纳德⋅珍-巴普蒂斯特
田西蒙
Original Assignee
施耐德电气工业公司
马锋
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.)
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Publication date
Application filed by 施耐德电气工业公司, 马锋 filed Critical 施耐德电气工业公司
Priority to EP18875259.6A priority Critical patent/EP3706154B1/en
Priority to AU2018363439A priority patent/AU2018363439B2/en
Priority to RU2020118381A priority patent/RU2742141C1/en
Publication of WO2019091406A1 publication Critical patent/WO2019091406A1/en

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/12Automatic release mechanisms with or without manual release
    • H01H71/128Manual release or trip mechanisms, e.g. for test purposes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04Means for indicating condition of the switching device
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/50Manual reset mechanisms which may be also used for manual release
    • H01H71/52Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/521Details concerning the lever handle

Definitions

  • the present disclosure relates to power distribution devices, and in one application, to low voltage power distribution devices.
  • low-voltage power distribution devices also known as low-voltage power distribution accessories
  • leakage protectors such as leakage protectors, arc fault protectors, overvoltage/undervoltage protectors
  • overvoltage/undervoltage protectors are connected between the main power supply and the load circuit. It can provide various protections such as leakage protection, arc protection, undervoltage/overvoltage protection for the main power supply or load circuit, thus ensuring the safety of the main power supply or load circuit.
  • Some low voltage power distribution units are capable of providing one or more of the combined functions of the above described protection functions.
  • the low-voltage power distribution device has a closing state and an opening state.
  • the low-voltage power distribution device In the closing state, the low-voltage power distribution device connects the main power source and the load circuit; in the opening state, the low-voltage power distribution device disconnects the main power source and the load circuit. connection.
  • the low-voltage power distribution device there is generally a control circuit board, and when a fault such as leakage, arcing, and undervoltage/overvoltage occurs, the control circuit board can control the tripping mechanism to generate a tripping action, thereby making the low-voltage power distribution device
  • the gate state is switched to the open state, thereby avoiding the above failure causing damage to the main power source or load.
  • the low-voltage power distribution device generally adopts the wiring method of the upper incoming line, that is, the incoming line connecting the main power supply is connected from the upper end interface of the low-voltage power distribution device, and the lower end interface of the low-voltage power distribution device is connected to the load circuit. Most of the current low-voltage power distribution units are also designed for the upper line. Therefore, when the above-mentioned failure occurs in the circuit or the low-voltage power distribution device, the low-voltage power distribution device controls the tripping, and simultaneously cuts off the power of the control circuit board.
  • the user may have to connect the main power supply and the load circuit by means of the down line, and developed a variety of low voltage distributions that can also be connected by the lower line.
  • Electrical device Down the line, as the name implies, that is, the main power supply is connected to the lower end of the low-voltage power distribution device, and the load circuit is connected to the upper end interface.
  • the internal circuit of the low-voltage power distribution device is not adjusted correspondingly, various problems occur in the low-voltage power distribution device when the lower-line mode is adopted.
  • One aspect of the disclosure provides a method for controlling tripping of a low voltage power distribution device.
  • the method includes detecting whether the low-voltage power distribution device is in a closed state; detecting whether a trip condition associated with tripping of the low-voltage power distribution device is satisfied; and responding to the low-voltage power distribution device being in a closed state and the trip signal is satisfied, causing the low voltage
  • the power distribution device performs a tripping action to switch the low voltage power distribution device from the closed state to the open state.
  • the tripping condition comprises at least one of an overvoltage, an undervoltage, a short circuit, a leakage, and an arc fault.
  • the method further includes signaling an alert to the user in response to the trip condition being satisfied.
  • a second aspect of the present disclosure provides a low voltage power distribution apparatus.
  • the low voltage power distribution apparatus includes a detection unit configured to issue a closing state signal to the control unit if the low voltage power distribution device is in a closed state; and a control unit coupled to the detection unit and configured to receive When the closing state signal and the tripping condition are satisfied, the low-voltage power distribution device is switched from the closed state to the open state for tripping.
  • the low voltage power distribution apparatus further includes a power source configured to supply power to at least the detection unit; a communication component coupled to the detection unit operative to communicate the detection unit with the power source in the closed state.
  • the communication component includes a first conductive contact coupled to the detection unit, a second conductive contact coupled to the power source, and a conductive component including a first contact portion and a second contact portion, the first contact portion coupling To the first conductive contact, the second contact portion is capable of contacting the second conductive contact in the closed state to connect the detecting unit to the power source.
  • the low voltage power distribution apparatus further includes a handle that is switchable between a closing position and an opening position in response to a user operation, thereby connecting the low voltage power distribution device between the closing state and the opening state Switching; and a drive member pivotally disposed in the low voltage power distribution device and operable to rotate from the first position to the second position in response to the handle being switched from the open position to the closed position to cause the second contact Partially contacting the second conductive contact.
  • the electrically conductive component further includes a third contact portion
  • the low voltage power distribution device further includes a test component including a test unit for testing the effectiveness of the low voltage power distribution device; the test contact coupled to the test unit And a test button that drives the third contact portion to contact the test contact in response to the user's pressing, thereby communicating the test unit with the power source if the second contact portion contacts the second conductive contact.
  • the first conductive contact, the second conductive contact, and the test contact are respectively conductive pins disposed at different locations within the low voltage power distribution device.
  • the electrically conductive member is a torsion spring and the first contact portion is a helical portion of the torsion spring, the second contact portion is a first free end extending from the helical portion of the torsion spring, and the third contact portion is twisted The second free end of the helical portion of the spring extends.
  • FIG. 1 shows a schematic structural view of a detecting unit and a test assembly of a low voltage switching device according to an exemplary embodiment of the present disclosure
  • FIG. 2 illustrates a side view of a low voltage switchgear in a closed state, in accordance with an exemplary embodiment of the present disclosure
  • FIG. 3 illustrates a side view of a low voltage switchgear in an open state, in accordance with an exemplary embodiment of the present disclosure
  • FIG. 4 illustrates an exploded perspective view of a portion of a low voltage switchgear in accordance with an exemplary embodiment of the present disclosure
  • FIG. 5 illustrates an exploded perspective view of a portion of a low voltage switchgear in accordance with an exemplary embodiment of the present disclosure
  • FIG. 6 illustrates a block flow diagram of a method of controlling tripping of a low voltage power distribution device in accordance with an exemplary embodiment of the present disclosure.
  • the term “include” and its various variants may be understood to mean an open term, which means “including but not limited to”.
  • the term “based on” can be understood to mean “based at least in part.”
  • the term “an embodiment” can be understood to mean “at least one embodiment.”
  • the term “another embodiment” may be understood to mean “at least one other embodiment.”
  • the low-voltage power distribution device generally has a control circuit board, and the detection module on the control circuit board can detect faults such as leakage, arc, and undervoltage/overvoltage, and send the detection result to the control unit as an electrical signal.
  • the control unit determines, according to the signal, a trip condition in the circuit for tripping the low-voltage power distribution device, thereby issuing a trip trigger signal for triggering tripping of the trip structure, and the trip mechanism completes the trip according to the trip trigger signal. Buckle action.
  • the detection module may not be on the control board, and it may be powered by a separate power source.
  • the low-voltage power distribution unit still uses the control circuit board and its connection method when the low-voltage power distribution device is still connected.
  • the control circuit board can control the trip mechanism to complete the tripping action, thereby disconnecting the main power source and the load circuit The connection, but after the trip, that is, in the case where the low-voltage power distribution device is in the open state, the control circuit board is always charged because the main power source is connected from the lower end inlet.
  • control circuit board When the control circuit board is energized, it can complete its various functions.
  • the control unit will still send a trip trigger signal to the trip mechanism according to the trip condition, and the trip mechanism will generate a trip action according to the signal.
  • the low-voltage power distribution device still in the open state does not respond to the tripping action, that is, the tripping mechanism will always operate in this case. This idling operation often causes the tripping mechanism to malfunction such as burnout, resulting in the entire low-voltage power distribution device being unusable.
  • some low-voltage power distribution devices use the lower incoming line and, after tripping, disable the fault detecting mechanism to prevent the tripping mechanism from being burned out.
  • the control unit does not receive the fault signal from the fault detection mechanism, and thus does not issue a trip trigger signal.
  • the tripping mechanism therefore does not produce an action, that is to say, in the event of a circuit failure, the circuit can still be in a connected state, and the low-voltage power distribution device only warns the user that the fault still exists by flashing the warning light.
  • Embodiments of the present disclosure provide an improved low voltage power distribution apparatus 200 and method of controlling tripping of low voltage power distribution apparatus 200 to address or at least partially address the above and other potential problems of conventional approaches.
  • FIG. 1 illustrates a structural diagram of a detecting unit and a test assembly of a low voltage switching device according to an exemplary embodiment of the present disclosure.
  • the improved low voltage power distribution unit 200 will now be described in conjunction with FIG.
  • the low voltage power distribution apparatus 200 of the present disclosure includes a detection unit 100 and a control unit 202.
  • the detecting unit 100 is disposed in the low voltage power distribution device 200 for issuing a closing state signal when the low voltage power distribution device 200 is in a closed state.
  • the closing status signal can be an electrical signal or other type of digital or analog signal.
  • Control unit 202 is coupled to detection unit 100. It should be understood that control unit 202 may be coupled directly to detection unit 100, or may be coupled to detection unit 100 by a filter circuit or modulation circuit. That is to say, the closing state signal of the detecting unit 100 may be directly sent to the control unit 202, or may be filtered or modulated and sent to the control unit 202.
  • the control unit 202 After receiving the closing state signal, if there is still a trip condition in the circuit, the control unit 202 controls the low voltage power distribution device 200 to trip. It should be understood that the low voltage power distribution apparatus according to the present disclosure triggers the trip signal only if the control unit 202 receives both the closing state signal and the trip condition. That is to say, in the open state, even if the trip condition still exists, the control unit 202 does not trigger any signal because the switch state signal is not detected or received, and the trip mechanism does not Produce any action.
  • the control unit 202 can have a clearer judgment on the state of the low voltage power distribution device 200, thereby avoiding the low voltage distribution. Electrical device 200, as well as the load and its circuitry, are subject to damage.
  • the low voltage power distribution device 200 may further include a power source 215 for supplying power to at least the detecting unit 100.
  • the detecting unit 100 will only issue a closing state signal if it is powered, that is, when the power source 215 is turned on.
  • the power source 215 can be a buck module disposed in the low voltage power distribution device 200.
  • the buck module supplies power to the detecting unit 100 by lowering the voltage of the main power source.
  • the power source 215 can also be a battery or the like.
  • the low voltage power distribution apparatus 200 can also include a communication component 201 that can be coupled to the detection unit 100 and that can be operated to communicate the detection unit 100 with the power source 215 with the low voltage power distribution apparatus in a closed state, thereby detecting Unit 100 will be powered to issue a closing status signal.
  • a communication component 201 that can be coupled to the detection unit 100 and that can be operated to communicate the detection unit 100 with the power source 215 with the low voltage power distribution apparatus in a closed state, thereby detecting Unit 100 will be powered to issue a closing status signal.
  • the detecting unit 100 Since the communication unit 201 communicates the power source 215 with the detecting unit 100 only in the closed state, the detecting unit 100 issues a closing state signal to the control unit 202. After the low voltage power distribution device 200 is tripped, the connection between the detecting unit 100 and the power source 215 is disconnected. Therefore, at this time, the detecting unit 100 cannot issue a closing state signal because it is not powered. This realizes the detection of the closing state by the simple detecting unit 100 and the communicating component 201, and substantially realizes the above-mentioned detecting function without any structural modification to the conventional low-voltage power distribution device, thereby saving the cost and improving the low voltage. The reliability of the power distribution unit.
  • the detecting unit 100 can be a circuit.
  • the circuit can send an electrical signal at the output when the power source 215 is turned on, and the control unit 202 confirms that the low-voltage power distribution device 200 is in the closed state after receiving the electrical signal.
  • the detection unit 100 can also take any other form that enables a switch-on status signal to be issued in communication with the power source 215.
  • the low voltage power distribution device can also include a trip mechanism (not shown).
  • the control unit 202 completes the tripping action by issuing a trip trigger signal to the trip mechanism.
  • the detection unit 100, the power source 215, the communication assembly 201, the control unit 202, and the trip mechanism can be disposed on a control circuit board (not shown) in the low voltage dispensing device.
  • the control circuit board can be an integral circuit board or a separate structure, each module being in a separate split structure to more precisely control each unit or module.
  • the communication assembly 201 includes two conductive contacts (referred to as a first conductive contact 203 and a second conductive contact 204 for convenience of description) and a conductive member 205.
  • the first conductive contact 203 is coupled to the detection unit 100 and the second conductive contact 204 is coupled to the power source 215.
  • a portion of conductive member 205 (referred to as first contact portion 206 for convenience of description) is coupled to first conductive contact 203, while another portion (referred to as first contact portion 207 for convenience of description) is operable to close
  • the second conductive contact 204 is contacted in a state to communicate the detecting unit 100 and the power source 215. .
  • the low voltage power distribution device 200 can have a handle 208 and a drive component 209.
  • the handle 208 is switchable in two positions (referred to as closing position and opening position, respectively for convenience of description) in response to a user's operation. When the handle 208 is in the closing position, the low-voltage power distribution device 200 is in the closed state, and when in the opening position, the low-voltage power distribution device 200 is in the open state.
  • the drive member 209 is pivotally disposed in the low voltage power distribution device 200. During the switching of the handle from the open position of FIG. 3 to the closed position of FIG. 2, the drive member 209 can be driven to rotate from the first position P1 to the second position P1. In this process, the driving member 209 forces the second contact portion 207 to contact the second conductive contact 204, thereby achieving the second contact portion 207 contacting the second conductive contact 204 in the closed state to complete the detection unit 100 and the power supply 215. through.
  • the low voltage power distribution device 200 is switched from the closed state to the open state by the tripping action to disconnect the main power source from the load circuit. It should be understood that the low voltage power distribution unit 200 can also be switched from the closed state to the open state by the handle 208. Whether the low voltage power distribution device 200 is switched from the closed state to the open state due to the tripping action or the operation of the handle 208, the position of the handle 208 is correspondingly switched from the closing position to the opening position. The drive member 209 is thus also rotated from the second position P2 back to the first position P1. At this time, the second contact portion 207 does not receive the pressing force of the driving member 209, but disconnects the second conductive contact 204 to disconnect the detecting unit 100 from the power source 215.
  • the conductive member 205 can also include a third contact portion 213, and the low voltage power distribution device 200 further includes a test assembly 210 that can, for example, test the effectiveness of the low voltage power distribution device 200.
  • the test component 210 includes a test unit 211, a test contact 212, and a test button 214.
  • test unit 211 can be a circuit that is coupled to a respective module that requires testing.
  • the test unit 211 is coupled to the test contact 212, and in response to a user's pressing, the test button 214 can drive the third contact portion 213 into contact with the test contact 212 such that in the closed state, that is, the second contact portion 207 contacts In the case of the second conductive contact 204, the test unit 211 is in communication with the power source 215 to power the test unit 211.
  • the test unit 211 can be a circuit that performs a test function. It should be understood that the test unit 211 can also take any other form that can be implemented in a test function.
  • the first conductive contact 203, the second conductive contact 204, and the test contact 212 are respectively conductive pins disposed in the low voltage power distribution device.
  • the three conductive contacts are in the form of conductive pins that allow the conductive contacts to perform conductive functions while also acting as a fulcrum or pivot for the movement of certain components.
  • the three conductive pins, that is, the first conductive contact 203, the second conductive contact 204, and the test contact 212 may be made of a metal material.
  • the first conductive contact 203, the second conductive contact 204, or the test contact 212 may also be in the form of a conductive pin, for example, may be separately disposed on the low voltage power distribution device. Any other form of contact structure within 200 that enables circuit conduction.
  • the conductive member 205 can be a torsion spring.
  • the torsion spring generally has a helical portion and at least two free ends extending from the helical portion (referred to as a first free end and a second free end for convenience of description).
  • the helical portion of the torsion spring acts as the first contact portion 206
  • the second contact portion 207 can be the first free end
  • the third contact portion 213 can be the second free end.
  • the first free end and the second free end may have suitable lengths and may be bent or deformed to enable the torsion spring to accommodate the first conductive contact in the low voltage power distribution apparatus 200.
  • the second conductive contact 204 and the test contact 212 are disposed.
  • the low voltage power distribution device 200 also includes an alarm unit (not shown).
  • the alarm unit is capable of alerting the user if the fault detection mechanism detects that there is a trip condition in the circuit.
  • the alarm unit can issue a light alarm, an audible alarm, or a combination of both depending on the trip condition to alert the user that there is a fault in the circuit that requires maintenance as soon as possible.
  • control unit 202 The improvement in the structure of the low-voltage power distribution device is described in detail above with reference to Figs. It is also important that the control logic of control unit 202 also needs to be improved accordingly in order to better address some of the problems associated with conventional low voltage power distribution units. This is reflected in the method of controlling the trip of the low voltage power distribution unit 200.
  • FIG. 6 a block flow diagram 600 of a method of controlling tripping of a low voltage power distribution device is illustrated in accordance with an exemplary embodiment of the present disclosure.
  • the closing state can be detected by the detecting unit 100 as described above, that is, the block 601 can be executed by the detecting unit 100.
  • the detecting unit 100 transmits the closing state information to the control unit 202 in the closed state. It should of course be understood that in some embodiments, the block 601 can also be performed by any other component or unit capable of detecting the closed state.
  • the block 602 can be performed by the fault detection mechanism described above.
  • the fault detecting mechanism may transmit a trip condition signal to the control unit 202 upon detecting that the trip condition is satisfied.
  • the content in block 602 can also be performed by control unit 202.
  • block 601 is described before block 602, it does not mean that it can only be performed in the described order of the two blocks 601 and 602, and the method can be performed in other orders.
  • block 601 and block 602 can be performed simultaneously, or the contents of block 602 can be performed first, and then the contents of block 601 can be performed.
  • block 604 in response to the low voltage power distribution device 200 being in the closed state and the trip condition being satisfied, the low voltage power distribution device is caused to perform a trip action to switch the low voltage power distribution device from the closed state to the open state.
  • block 604 can be performed by control unit 202 described above.
  • the block 604 can cause the low voltage power distribution device 200 to trip by the control unit 202 sending a trip trigger signal to the venting mechanism.
  • the method will trip the trip device only if both the closed state and the tripping condition are satisfied. This is equivalent to adding closed-loop control when controlling the disconnect. For example, at block 605, when the low voltage power distribution apparatus 200 is in the open state, the tripping action is not performed, so that components related to performing the tripping action, such as tripping mechanisms, etc., are not frequently operated. Burned out. At this point, at block 606, control unit 202 is already in a standby state without triggering a signal such as a trip signal.
  • the low-voltage power distribution device 200 is detected to be in the closed state in the case where the tripping condition is satisfied, the low-voltage power distribution device is also tripped to be switched from the closed state to the open state. This ensures safe use of the load circuit and even the low voltage power distribution unit 200.
  • the above method can be applied to a low voltage power distribution device in a down wiring state.
  • the method can also be applied to any other low voltage power distribution device that needs to detect the closing state.
  • the trip conditions described above may include, but are not limited to, at least one of overvoltage, undervoltage, short circuit, leakage, and arc fault of the circuit.
  • an alert signal is sent to the user in response to the trip condition being satisfied. Based on the alarm signal, the user will perform maintenance on the circuit or the low-voltage power distribution device to eliminate the fault that triggers the trip condition. This further ensures the safe use of the low voltage power distribution unit 200.

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Abstract

A low-voltage power distribution device and a method for controlling low-voltage power distribution device tripping. The low-voltage power distribution device (200) comprises: a detection unit (100), which is configured to issue a closed state signal to a control unit when the low-voltage power distribution device is in a closed state; and the control unit (202), which is coupled to the detection unit and which is configured to switch the low-voltage power distribution unit from the closed state to an open state when the closed state signal is received and a tripping condition is satisfied. The method for use in controlling low-voltage power distribution device tripping comprises detecting whether the low-voltage power distribution device is in a closed state; detecting whether a tripping condition for low-voltage power distribution device tripping exists; causing the low-voltage power distribution device to execute a tripping action in response to the low-voltage power distribution device being in the closed state and the tripping condition being satisfied. The state of the low-voltage power distribution device may be clearly determined by means of detecting a closed state so as to prevent damage to the device and a circuit.

Description

低压配电装置及用于控制低压配电装置脱扣的方法Low-voltage power distribution device and method for controlling tripping of low-voltage power distribution device
相关申请的交叉引用Cross-reference to related applications
本申请要求申请日为2017年11月7日、申请号为201711086939.4的中国发明专利申请的优先权。This application claims priority from Chinese patent application filed on Nov. 7, 2017, application No. 201711086939.4.
技术领域Technical field
本公开涉及配电装置,在一个应用方面,涉及低压配电装置。The present disclosure relates to power distribution devices, and in one application, to low voltage power distribution devices.
背景技术Background technique
目前,诸如漏电保护器、电弧故障保护器、过压/欠压保护器等各种各样的低压配电装置(也被称为低压配电附件类产品)连接在主电源和负载电路之间,能够为主电源或负载电路带来漏电保护、电弧保护、欠压/过压保护等各种保护,从而保证了主电源或负载电路的使用安全。有的低压配电装置能够提供上述保护功能的一种或多种组合功能。一般低压配电装置都具有合闸状态和分闸状态,在合闸状态,低压配电装置将主电源和负载电路接通;在分闸状态,低压配电装置断开主电源和负载电路的连接。在低压配电装置中,一般具有控制电路板,在发生诸如漏电、电弧以及欠压/过压等故障时,控制电路板能够控制脱扣机构产生脱扣动作,从而使低压配电装置从合闸状态切换到分闸状态,从而避免上述故障使得主电源或负载损坏。Currently, various low-voltage power distribution devices (also known as low-voltage power distribution accessories) such as leakage protectors, arc fault protectors, overvoltage/undervoltage protectors are connected between the main power supply and the load circuit. It can provide various protections such as leakage protection, arc protection, undervoltage/overvoltage protection for the main power supply or load circuit, thus ensuring the safety of the main power supply or load circuit. Some low voltage power distribution units are capable of providing one or more of the combined functions of the above described protection functions. Generally, the low-voltage power distribution device has a closing state and an opening state. In the closing state, the low-voltage power distribution device connects the main power source and the load circuit; in the opening state, the low-voltage power distribution device disconnects the main power source and the load circuit. connection. In the low-voltage power distribution device, there is generally a control circuit board, and when a fault such as leakage, arcing, and undervoltage/overvoltage occurs, the control circuit board can control the tripping mechanism to generate a tripping action, thereby making the low-voltage power distribution device The gate state is switched to the open state, thereby avoiding the above failure causing damage to the main power source or load.
低压配电装置一般采用上进线的接线方法,也就是连接主电源的进线从低压配电装置的上端接口接入,而低压配电装置的下端接口连接负载电路。目前大部分的低压配电装置也是为上进线而设计的。因此,在电路或低压配电装置中发生上述故障时,低压配电装置控制脱扣的同时,会同时切断控制电路板的电源。为了满足用户 各种不同的需求,例如,由于各种因素,用户可能不得不采用下进线的方式将主电源和负载电路连接,开发出了多种也能够采用下进线连接方式的低压配电装置。下进线,顾名思义,也就是主电源连接到低压配电装置的下端接口,而负载电路连接到上端接口。但由于未对低压配电装置内部电路进行相应地调整,从而使得在低压配电装置在采用下进线方式时出现了各种各样的问题。The low-voltage power distribution device generally adopts the wiring method of the upper incoming line, that is, the incoming line connecting the main power supply is connected from the upper end interface of the low-voltage power distribution device, and the lower end interface of the low-voltage power distribution device is connected to the load circuit. Most of the current low-voltage power distribution units are also designed for the upper line. Therefore, when the above-mentioned failure occurs in the circuit or the low-voltage power distribution device, the low-voltage power distribution device controls the tripping, and simultaneously cuts off the power of the control circuit board. In order to meet the various needs of users, for example, due to various factors, the user may have to connect the main power supply and the load circuit by means of the down line, and developed a variety of low voltage distributions that can also be connected by the lower line. Electrical device. Down the line, as the name implies, that is, the main power supply is connected to the lower end of the low-voltage power distribution device, and the load circuit is connected to the upper end interface. However, since the internal circuit of the low-voltage power distribution device is not adjusted correspondingly, various problems occur in the low-voltage power distribution device when the lower-line mode is adopted.
发明内容Summary of the invention
本公开的一个方面提供一种用于控制低压配电装置脱扣的方法。该方法包括检测低压配电装置是否处于合闸状态;检测是否满足与低压配电装置脱扣相关联的脱扣条件;响应于低压配电装置处于合闸状态并且脱扣信号被满足,使低压配电装置执行脱扣动作,以便将低压配电装置从合闸状态切换到分闸状态。One aspect of the disclosure provides a method for controlling tripping of a low voltage power distribution device. The method includes detecting whether the low-voltage power distribution device is in a closed state; detecting whether a trip condition associated with tripping of the low-voltage power distribution device is satisfied; and responding to the low-voltage power distribution device being in a closed state and the trip signal is satisfied, causing the low voltage The power distribution device performs a tripping action to switch the low voltage power distribution device from the closed state to the open state.
在一些实施例中,其中脱扣条件包括过压、欠压、短路、漏电和电弧故障中的至少一种。In some embodiments, wherein the tripping condition comprises at least one of an overvoltage, an undervoltage, a short circuit, a leakage, and an arc fault.
在一些实施例中,该方法还包括响应于脱扣条件被满足,向用户发出警报信号。In some embodiments, the method further includes signaling an alert to the user in response to the trip condition being satisfied.
本公开的第二方面提供了一种低压配电装置。该低压配电装置包括检测单元,其被配置为在低压配电装置处于合闸状态的情况下向控制单元发出合闸状态信号;以及控制单元,其耦合至检测单元并且被配置为在接收到合闸状态信号以及满足脱扣条件的情况下,使低压配电装置从合闸状态切换到分闸状态以便脱扣。A second aspect of the present disclosure provides a low voltage power distribution apparatus. The low voltage power distribution apparatus includes a detection unit configured to issue a closing state signal to the control unit if the low voltage power distribution device is in a closed state; and a control unit coupled to the detection unit and configured to receive When the closing state signal and the tripping condition are satisfied, the low-voltage power distribution device is switched from the closed state to the open state for tripping.
在一些实施例中,该低压配电装置还包括电源,被配置为至少向检测单元供电;连通组件,耦合至检测单元,可操作以在合闸状态下将检测单元与电源连通。In some embodiments, the low voltage power distribution apparatus further includes a power source configured to supply power to at least the detection unit; a communication component coupled to the detection unit operative to communicate the detection unit with the power source in the closed state.
在一些实施例中,连通组件包括第一导电触点,耦合至检测单元,第二导电触点,耦合至电源,以及导电部件,包括第一接触部分和第二接触部分,第一接触部分耦合至第一导电触点,第二接触部分能够在合闸状态下接触第二导电触点以将检测单元与电源接 通。In some embodiments, the communication component includes a first conductive contact coupled to the detection unit, a second conductive contact coupled to the power source, and a conductive component including a first contact portion and a second contact portion, the first contact portion coupling To the first conductive contact, the second contact portion is capable of contacting the second conductive contact in the closed state to connect the detecting unit to the power source.
在一些实施例中,该低压配电装置还包括手柄,能够响应于用户的操作而在合闸位置和分闸位置之间切换,从而将低压配电装置在合闸状态与分闸状态之间切换;以及驱动部件,可枢转地设置在低压配电装置中,并且可操作以响应于手柄从分闸位置切换到合闸位置而从第一位置转动到第二位置,以使第二接触部分接触第二导电触点。In some embodiments, the low voltage power distribution apparatus further includes a handle that is switchable between a closing position and an opening position in response to a user operation, thereby connecting the low voltage power distribution device between the closing state and the opening state Switching; and a drive member pivotally disposed in the low voltage power distribution device and operable to rotate from the first position to the second position in response to the handle being switched from the open position to the closed position to cause the second contact Partially contacting the second conductive contact.
在一些实施例中,导电部件还包括第三接触部分,并且低压配电装置还包括测试组件,测试组件包括测试单元,用于测试低压配电装置的有效性;测试触点,耦合至测试单元;以及测试按钮,其响应于用户的按压而驱动第三接触部分接触测试触点,从而在第二接触部分接触第二导电触点的情况下将测试单元与电源连通。In some embodiments, the electrically conductive component further includes a third contact portion, and the low voltage power distribution device further includes a test component including a test unit for testing the effectiveness of the low voltage power distribution device; the test contact coupled to the test unit And a test button that drives the third contact portion to contact the test contact in response to the user's pressing, thereby communicating the test unit with the power source if the second contact portion contacts the second conductive contact.
在一些实施例中,第一导电触点、第二导电触点和测试触点分别是设置在低压配电装置内不同位置的导电销轴。In some embodiments, the first conductive contact, the second conductive contact, and the test contact are respectively conductive pins disposed at different locations within the low voltage power distribution device.
在一些实施例中,导电部件是扭簧,并且第一接触部分是扭簧的螺旋部分,第二接触部分是从扭簧的螺旋部分伸出的第一自由端,第三接触部分是从扭簧的螺旋部分伸出的第二自由端。In some embodiments, the electrically conductive member is a torsion spring and the first contact portion is a helical portion of the torsion spring, the second contact portion is a first free end extending from the helical portion of the torsion spring, and the third contact portion is twisted The second free end of the helical portion of the spring extends.
通过以下参照附图对示例性实施例的说明,本公开的进一步特征将变得显而易见。Further features of the present disclosure will become apparent from the description of the exemplary embodiments.
应当理解,公开内容部分并非旨在标识本公开的实施例的关键或重要特征,亦非旨在用于限制本公开的范围。本公开的其它特征将通过以下的描述变得容易理解。The disclosure is not intended to identify key or critical features of the embodiments of the present disclosure, and is not intended to limit the scope of the disclosure. Other features of the present disclosure will be readily understood by the following description.
附图说明DRAWINGS
通过参照附图的以下详细描述,本公开实施例的上述和其他目的、特征和优点将变得更容易理解。在附图中,将以示例以及非限制性的方式对本公开的多个实施例进行说明,其中:The above and other objects, features and advantages of the embodiments of the present invention will become more <RTIgt; In the figures, various embodiments of the present disclosure are described by way of example and not limitation
图1示出根据本公开示例性实施例的低压开关装置的检测单元和测试组件的结构简图;1 shows a schematic structural view of a detecting unit and a test assembly of a low voltage switching device according to an exemplary embodiment of the present disclosure;
图2示出根据本公开示例性实施例的处于合闸状态的低压开关装置侧视图;2 illustrates a side view of a low voltage switchgear in a closed state, in accordance with an exemplary embodiment of the present disclosure;
图3示出根据本公开示例性实施例的处于分闸状态的低压开关装置侧视图;3 illustrates a side view of a low voltage switchgear in an open state, in accordance with an exemplary embodiment of the present disclosure;
图4示出了根据本公开示例性实施例的低压开关装置一部分的分解透视图;4 illustrates an exploded perspective view of a portion of a low voltage switchgear in accordance with an exemplary embodiment of the present disclosure;
图5示出了根据本公开示例性实施例的低压开关装置一部分的分解透视图;以及FIG. 5 illustrates an exploded perspective view of a portion of a low voltage switchgear in accordance with an exemplary embodiment of the present disclosure;
图6示出了根据本公开示例性实施例的控制低压配电装置脱扣的方法的流程框图。FIG. 6 illustrates a block flow diagram of a method of controlling tripping of a low voltage power distribution device in accordance with an exemplary embodiment of the present disclosure.
具体实施方式Detailed ways
现在将参照附图中所示的各种示例性实施例对本公开的原理进行说明。应当理解,这些实施例的描述仅仅为了使得本领域的技术人员能够更好地理解并进一步实现本公开,而并不意在以任何方式限制本公开的范围。应当注意的是,在可行情况下可以在图中使用类似或相同的附图标记,并且类似或相同的附图标记可以表示类似或相同的功能。本领域的技术人员将容易地认识到,从下面的描述中,本文中所说明的结构和方法的替代实施例可以被采用而不脱离通过本文描述的本公开的原理。The principles of the present disclosure will now be described with reference to various exemplary embodiments illustrated in the drawings. It is to be understood that the description of the embodiments is only to be understood by those skilled in the art, and is not intended to limit the scope of the disclosure in any way. It should be noted that similar or identical reference numerals may be used in the drawings where possible, and similar or identical reference numerals may indicate similar or identical functions. Those skilled in the art will readily appreciate that the alternative embodiments of the structures and methods described herein may be employed without departing from the principles of the disclosure.
如本文中,术语“包括”及其各种变体可以被理解为开放式术语,其意味着“包括但不限于”。术语“基于”可以被理解为“至少部分地基于”。术语“一个实施例”可以被理解为“至少一个实施例”。术语“另一实施例”可以被理解为“至少一个其它实施例”。As used herein, the term "include" and its various variants may be understood to mean an open term, which means "including but not limited to". The term "based on" can be understood to mean "based at least in part." The term "an embodiment" can be understood to mean "at least one embodiment." The term "another embodiment" may be understood to mean "at least one other embodiment."
低压配电装置中一般具有控制电路板,控制电路板上的检测模块能够检测诸如漏电、电弧以及欠压/过压等故障,并将检测结果以电信号的方式发送给控制单元。控制单元会根据该信号确定电路中存在使低压配电装置脱扣的脱扣条件,从而会发出触发脱扣结构脱扣的脱扣触发信号,脱扣机构会根据该脱扣触发信号而完成脱扣动 作。在有的低压配电装置中,检测模块也可能不处于控制电路板上,其也可能采用单独的电源为其供电。The low-voltage power distribution device generally has a control circuit board, and the detection module on the control circuit board can detect faults such as leakage, arc, and undervoltage/overvoltage, and send the detection result to the control unit as an electrical signal. The control unit determines, according to the signal, a trip condition in the circuit for tripping the low-voltage power distribution device, thereby issuing a trip trigger signal for triggering tripping of the trip structure, and the trip mechanism completes the trip according to the trip trigger signal. Buckle action. In some low-voltage power distribution units, the detection module may not be on the control board, and it may be powered by a separate power source.
低压配电装置在某些情形下,特别是在采用下进线连接方式时,由于低压配电装置依然采用上进线连接方式时的控制电路板以及其连接方式。这就带来了诸多问题。例如,由于下进线连接方式是主电源与低压配电装置的下端接口连接,在检测到上述故障时,虽然控制电路板能够控制脱扣机构完成脱扣动作,从而断开主电源与负载电路的连接,但在脱扣后,即低压配电装置在分闸状态的情况下,控制电路板由于主电源从下端入口接入而会一直带电。In some cases, especially in the case of the lower-input line connection, the low-voltage power distribution unit still uses the control circuit board and its connection method when the low-voltage power distribution device is still connected. This brings a lot of problems. For example, since the lower incoming line connection method is that the main power source is connected to the lower end interface of the low voltage power distribution device, when the above fault is detected, although the control circuit board can control the trip mechanism to complete the tripping action, thereby disconnecting the main power source and the load circuit The connection, but after the trip, that is, in the case where the low-voltage power distribution device is in the open state, the control circuit board is always charged because the main power source is connected from the lower end inlet.
控制电路板带电就能够完成其各种既有功能,控制单元依然会根据脱扣条件向脱扣机构发送脱扣触发信号,脱扣机构会根据该信号产生脱扣动作。然而此时,依然处于分闸状态的低压配电装置并不会对该脱扣动作做出相应,也就是说,脱扣机构在这种情况下会一直空操作。这种空操作往往会导致脱扣机构产生被烧坏等故障,从而导致整个低压配电装置不能使用。When the control circuit board is energized, it can complete its various functions. The control unit will still send a trip trigger signal to the trip mechanism according to the trip condition, and the trip mechanism will generate a trip action according to the signal. However, at this time, the low-voltage power distribution device still in the open state does not respond to the tripping action, that is, the tripping mechanism will always operate in this case. This idling operation often causes the tripping mechanism to malfunction such as burnout, resulting in the entire low-voltage power distribution device being unusable.
考虑到这个问题,有的低压配电装置在采用下进线的情况下,并在脱扣后,会将故障检测机构禁用,从而避免脱扣机构被烧坏。在这种情况下,如果电路中的故障还未排除掉,用户依然能够完成合闸操作。由于此时故障检测机构被禁用,控制单元并不会接收到故障检测机构发出的故障信号,从而也不会发出脱扣触发信号。脱扣机构因此也不会产生动作,也就是说,在存在电路故障的情况下,电路依然能够处于连通状态,低压配电装置只会采用报警灯闪烁的方式警告用户故障依然存在。这虽然能够保护脱扣机构乃至低压配电装置不受损坏,但这可能会带来更严重的问题,例如,用户可能不会注意到闪烁的报警灯,而继续其他工作,从而可能导致电路中负载损坏甚至会威胁到用户的人身安全。In view of this problem, some low-voltage power distribution devices use the lower incoming line and, after tripping, disable the fault detecting mechanism to prevent the tripping mechanism from being burned out. In this case, if the fault in the circuit has not been eliminated, the user can still complete the closing operation. Since the fault detection mechanism is disabled at this time, the control unit does not receive the fault signal from the fault detection mechanism, and thus does not issue a trip trigger signal. The tripping mechanism therefore does not produce an action, that is to say, in the event of a circuit failure, the circuit can still be in a connected state, and the low-voltage power distribution device only warns the user that the fault still exists by flashing the warning light. Although this can protect the trip mechanism and even the low-voltage power distribution device from damage, this may cause more serious problems. For example, the user may not notice the flashing warning light and continue other work, which may lead to the circuit. Damage to the load can even threaten the user's personal safety.
本公开的实施例提供了一种改进的低压配电装置200和控制低压配电装置200脱扣的方法,以解决或至少部分地解决传统方案的上述以及其他潜在问题。Embodiments of the present disclosure provide an improved low voltage power distribution apparatus 200 and method of controlling tripping of low voltage power distribution apparatus 200 to address or at least partially address the above and other potential problems of conventional approaches.
下面将结合图1至图6详细说明根据本公开的示例性实施例的低压配电装置200的改进以及控制低压配电装置200脱扣的方法。图1示出根据本公开示例性实施例的低压开关装置的检测单元和测试组件的结构简图。下面将结合图1介绍该改进的低压配电装置200。An improvement of the low voltage power distribution apparatus 200 and a method of controlling the trip of the low voltage power distribution apparatus 200 according to an exemplary embodiment of the present disclosure will be described in detail below with reference to FIGS. 1 through 6. FIG. 1 illustrates a structural diagram of a detecting unit and a test assembly of a low voltage switching device according to an exemplary embodiment of the present disclosure. The improved low voltage power distribution unit 200 will now be described in conjunction with FIG.
总体上,本公开的低压配电装置200包括检测单元100、以及控制单元202。该检测单元100设置在低压配电装置200中,用来在低压配电装置200处于合闸状态的情况下发出合闸状态信号。该合闸状态信号可以是电信号,也可以是其他类型的数字或模拟信号。控制单元202耦合至检测单元100。应当理解的是,控制单元202可以直接地耦合至检测单元100,也可以通过滤波电路或调制电路耦合至检测单元100。也就是说,检测单元100的合闸状态信号可以直接发送至控制单元202,也可以经过滤波或调制后发送给控制单元202。In general, the low voltage power distribution apparatus 200 of the present disclosure includes a detection unit 100 and a control unit 202. The detecting unit 100 is disposed in the low voltage power distribution device 200 for issuing a closing state signal when the low voltage power distribution device 200 is in a closed state. The closing status signal can be an electrical signal or other type of digital or analog signal. Control unit 202 is coupled to detection unit 100. It should be understood that control unit 202 may be coupled directly to detection unit 100, or may be coupled to detection unit 100 by a filter circuit or modulation circuit. That is to say, the closing state signal of the detecting unit 100 may be directly sent to the control unit 202, or may be filtered or modulated and sent to the control unit 202.
在接收到该合闸状态信号后,如果电路中依然存在脱扣条件,则控制单元202会控制低压配电装置200脱扣。应当理解的是,根据本公开的低压配电装置只有在控制单元202接收到合闸状态信号和并满足脱扣条件两者的情况下才会触发脱扣信号。也就是说,在分闸状态下,即使脱扣条件依然存在,控制单元202由于未检测到或未收到合闸状态信号,控制单元202也不会触发任何信号,脱扣机构因此也不会产生任何动作。因此,通过设置检测单元100指示合闸状态,相当于在低压配电装置200中加入了闭环控制,控制单元202能够对低压配电装置200的状态有了更加清晰的判断,从而能够避免低压配电装置200以及负载及其电路遭受损坏。After receiving the closing state signal, if there is still a trip condition in the circuit, the control unit 202 controls the low voltage power distribution device 200 to trip. It should be understood that the low voltage power distribution apparatus according to the present disclosure triggers the trip signal only if the control unit 202 receives both the closing state signal and the trip condition. That is to say, in the open state, even if the trip condition still exists, the control unit 202 does not trigger any signal because the switch state signal is not detected or received, and the trip mechanism does not Produce any action. Therefore, by setting the detection unit 100 to indicate the closing state, which is equivalent to adding the closed loop control to the low voltage power distribution device 200, the control unit 202 can have a clearer judgment on the state of the low voltage power distribution device 200, thereby avoiding the low voltage distribution. Electrical device 200, as well as the load and its circuitry, are subject to damage.
在一些实施例中,上述功能可以通过以下方式来实现。低压配电装置200还可以包括电源215用来至少为检测单元100供电,检测单元100只有在被供电,也即与电源215接通的情况下才会发出合闸状态信号。在一些实施例中,电源215可以是设置在低压配电装置200中降压模块。该降压模块通过将主电源的电压降低从而为检测单元100提供电力。在一些实施例中,电源215也可以是电池 等。In some embodiments, the above functions may be implemented in the following manner. The low voltage power distribution device 200 may further include a power source 215 for supplying power to at least the detecting unit 100. The detecting unit 100 will only issue a closing state signal if it is powered, that is, when the power source 215 is turned on. In some embodiments, the power source 215 can be a buck module disposed in the low voltage power distribution device 200. The buck module supplies power to the detecting unit 100 by lowering the voltage of the main power source. In some embodiments, the power source 215 can also be a battery or the like.
低压配电装置200还可以包括连通组件201,连通组件201能够耦合到检测单元100,并且能够被操作以在低压配电装置处于合闸状态的情况下将检测单元100与电源215连通,从而检测单元100会被供电以发出合闸状态信号。The low voltage power distribution apparatus 200 can also include a communication component 201 that can be coupled to the detection unit 100 and that can be operated to communicate the detection unit 100 with the power source 215 with the low voltage power distribution apparatus in a closed state, thereby detecting Unit 100 will be powered to issue a closing status signal.
由于连通组件201仅在合闸状态下才将电源215与检测单元100连通,从而使得检测单元100向控制单元202发出合闸状态信号。而在低压配电装置200脱扣以后,检测单元100与电源215的连接是断开的。因此此时检测单元100由于未被供电而不能发出合闸状态信号。这通过简单的检测单元100和连通组件201实现了合闸状态的检测,并且基本不需对常规的低压配电装置进行任何结构上的改动而实现上述检测功能,节约了成本的同时提高了低压配电装置的可靠性。Since the communication unit 201 communicates the power source 215 with the detecting unit 100 only in the closed state, the detecting unit 100 issues a closing state signal to the control unit 202. After the low voltage power distribution device 200 is tripped, the connection between the detecting unit 100 and the power source 215 is disconnected. Therefore, at this time, the detecting unit 100 cannot issue a closing state signal because it is not powered. This realizes the detection of the closing state by the simple detecting unit 100 and the communicating component 201, and substantially realizes the above-mentioned detecting function without any structural modification to the conventional low-voltage power distribution device, thereby saving the cost and improving the low voltage. The reliability of the power distribution unit.
在一些实施例中,如图1所示,检测单元100可以是一个电路。该电路能够在接通电源215的情况下在输出端发出电信号,控制单元202在接收到该电信号后确认低压配电装置200处于合闸状态。应当理解的是,检测单元100还可以采用其他能够实现在与电源215连通的情况下发出合闸状态信号的任何形式。In some embodiments, as shown in FIG. 1, the detecting unit 100 can be a circuit. The circuit can send an electrical signal at the output when the power source 215 is turned on, and the control unit 202 confirms that the low-voltage power distribution device 200 is in the closed state after receiving the electrical signal. It should be understood that the detection unit 100 can also take any other form that enables a switch-on status signal to be issued in communication with the power source 215.
在一些实施例中,低压配电装置还可以包括脱扣机构(未示出)。控制单元202通过向脱扣机构发出脱扣触发信号来完成脱扣动作。在一些实施例中,检测单元100、电源215、连通组件201、控制单元202和脱扣机构可以设置在低压配单装置中的控制电路板(未示出)上。控制电路板可以是整体的电路板,也可以是分体的结构,每个模块分别处于不同的分体结构中,以更精确地控制每个单元或模块。In some embodiments, the low voltage power distribution device can also include a trip mechanism (not shown). The control unit 202 completes the tripping action by issuing a trip trigger signal to the trip mechanism. In some embodiments, the detection unit 100, the power source 215, the communication assembly 201, the control unit 202, and the trip mechanism can be disposed on a control circuit board (not shown) in the low voltage dispensing device. The control circuit board can be an integral circuit board or a separate structure, each module being in a separate split structure to more precisely control each unit or module.
下面结合图1以及图2至图5介绍连通组件201的细节。在一些实施例中,如图1所示,连通组件201包括两个导电触点(为了方便描述,称为第一导电触点203和第二导电触点204)和导电部件205。第一导电触点203耦合至检测单元100,第二导电触点204耦 合至电源215。导电部件205的一部分(为了方便描述,称为第一接触部分206)耦合至第一导电触点203,而另外的部分(为了方便描述,称为第一接触部分207)可操作以在合闸状态下接触第二导电触点204,从而连通检测单元100和电源215。.Details of the communication assembly 201 will be described below with reference to FIG. 1 and FIGS. 2 to 5. In some embodiments, as shown in FIG. 1, the communication assembly 201 includes two conductive contacts (referred to as a first conductive contact 203 and a second conductive contact 204 for convenience of description) and a conductive member 205. The first conductive contact 203 is coupled to the detection unit 100 and the second conductive contact 204 is coupled to the power source 215. A portion of conductive member 205 (referred to as first contact portion 206 for convenience of description) is coupled to first conductive contact 203, while another portion (referred to as first contact portion 207 for convenience of description) is operable to close The second conductive contact 204 is contacted in a state to communicate the detecting unit 100 and the power source 215. .
下面将结合图2和图3来介绍如何实现在合闸状态的情况下使第二接触部分207接触第二导电触点204完成电路的导通的。图2示出根据本公开示例性实施例的处于合闸状态的低压开关装置侧视图;图3示出根据本公开示例性实施例的处于分闸状态的低压开关装置侧视图。从图中可以看出,在有些实施例中,低压配电装置200可以具有手柄208以及驱动部件209。手柄208响应于用户的操作,能够在两个位置(为了方便描述,分别称为合闸位置和分闸位置)切换。手柄208在处于合闸位置时,低压配电装置200处于合闸状态,在处于分闸位置时,低压配电装置200处于分闸状态。How to achieve the conduction of the second contact portion 207 in contact with the second conductive contact 204 in the case of the closed state will be described below with reference to FIGS. 2 and 3. 2 illustrates a side view of a low voltage switchgear in a closed state, according to an exemplary embodiment of the present disclosure; and FIG. 3 illustrates a side view of a low voltage switchgear in a tripped state, according to an exemplary embodiment of the present disclosure. As can be seen from the figures, in some embodiments, the low voltage power distribution device 200 can have a handle 208 and a drive component 209. The handle 208 is switchable in two positions (referred to as closing position and opening position, respectively for convenience of description) in response to a user's operation. When the handle 208 is in the closing position, the low-voltage power distribution device 200 is in the closed state, and when in the opening position, the low-voltage power distribution device 200 is in the open state.
驱动部件209可枢转地设置在低压配电装置200中。手柄从图3的分闸位置切换到图2的合闸位置的过程中,驱动部件209能够被驱动而从第一位置P1转动到第二位置P1。在这个过程中,驱动部件209迫使第二接触部分207接触第二导电触点204,从而实现在合闸状态时第二接触部分207接触第二导电触点204来完成检测单元100和电源215导通。The drive member 209 is pivotally disposed in the low voltage power distribution device 200. During the switching of the handle from the open position of FIG. 3 to the closed position of FIG. 2, the drive member 209 can be driven to rotate from the first position P1 to the second position P1. In this process, the driving member 209 forces the second contact portion 207 to contact the second conductive contact 204, thereby achieving the second contact portion 207 contacting the second conductive contact 204 in the closed state to complete the detection unit 100 and the power supply 215. through.
如上面所描述过的,低压配电装置200通过脱扣动作从合闸状态切换到分闸状态从而断开主电源与负载电路的连接。应当理解的是,低压配电装置200也可以通过手柄208从合闸状态切换到分闸状态。无论是由于脱扣动作还是手柄208的操作而使低压配电装置200从合闸状态切换到分闸状态,手柄208的位置都会相应地从合闸位置切换到分闸位置。驱动部件209也因此从第二位置P2转回到第一位置P1。此时,第二接触部分207不在收到驱动部件209的迫压,而断开与第二导电触点204的接触从而断开检测单元100与电源215的连接。As described above, the low voltage power distribution device 200 is switched from the closed state to the open state by the tripping action to disconnect the main power source from the load circuit. It should be understood that the low voltage power distribution unit 200 can also be switched from the closed state to the open state by the handle 208. Whether the low voltage power distribution device 200 is switched from the closed state to the open state due to the tripping action or the operation of the handle 208, the position of the handle 208 is correspondingly switched from the closing position to the opening position. The drive member 209 is thus also rotated from the second position P2 back to the first position P1. At this time, the second contact portion 207 does not receive the pressing force of the driving member 209, but disconnects the second conductive contact 204 to disconnect the detecting unit 100 from the power source 215.
在一些实施例中,如图1、图2和图3所示。导电部件205还可 以包括第三接触部分213,并且低压配电装置200还包括测试组件210,该测试组件210例如能测试低压配电装置200的有效性。在一些实施例中,该测试组件210包括测试单元211、测试触点212和测试按钮214。在一些实施例中,测试单元211可以是与需要测试的相应模块连接的电路。测试单元211耦合至测试触点212,并且响应于用户的按压,测试按钮214能够驱动第三接触部分213与测试触点212接触,从而使得在合闸状态,也就是第二触点部分207接触第二导电触点204的情况下,将测试单元211与电源215连通以为测试单元211供电。In some embodiments, as shown in Figures 1, 2 and 3. The conductive member 205 can also include a third contact portion 213, and the low voltage power distribution device 200 further includes a test assembly 210 that can, for example, test the effectiveness of the low voltage power distribution device 200. In some embodiments, the test component 210 includes a test unit 211, a test contact 212, and a test button 214. In some embodiments, test unit 211 can be a circuit that is coupled to a respective module that requires testing. The test unit 211 is coupled to the test contact 212, and in response to a user's pressing, the test button 214 can drive the third contact portion 213 into contact with the test contact 212 such that in the closed state, that is, the second contact portion 207 contacts In the case of the second conductive contact 204, the test unit 211 is in communication with the power source 215 to power the test unit 211.
如图1所示,测试单元211可以是完成测试功能的一个电路。应当理解的是,测试单元211还可以采用其他能够实现在测试功能的任何形式。As shown in FIG. 1, the test unit 211 can be a circuit that performs a test function. It should be understood that the test unit 211 can also take any other form that can be implemented in a test function.
如图4和图5所示,在一些实施例中,第一导电触点203、第二导电触点204以及测试触点212分别是设置在低压配电装置中的导电销轴。三个导电触点采用导电销轴的形式使得导电触点完成导电功能的同时,还能作为某些部件运动的支点或枢轴。三个导电销轴,也即第一导电触点203、第二导电触点204以及测试触点212可以采用金属材料制成。As shown in Figures 4 and 5, in some embodiments, the first conductive contact 203, the second conductive contact 204, and the test contact 212 are respectively conductive pins disposed in the low voltage power distribution device. The three conductive contacts are in the form of conductive pins that allow the conductive contacts to perform conductive functions while also acting as a fulcrum or pivot for the movement of certain components. The three conductive pins, that is, the first conductive contact 203, the second conductive contact 204, and the test contact 212 may be made of a metal material.
应当理解的是,在一些实施例中,第一导电触点203、第二导电触点204或者测试触点212也可以不采用导电销轴的形式,例如也可以采用单独设置在低压配电装置200内的能够实现电路导通的任何其他形式的触点结构。It should be understood that, in some embodiments, the first conductive contact 203, the second conductive contact 204, or the test contact 212 may also be in the form of a conductive pin, for example, may be separately disposed on the low voltage power distribution device. Any other form of contact structure within 200 that enables circuit conduction.
在一些实施例中,如图4所示,导电部件205可以是扭簧。扭簧一般具有螺旋部分和从螺旋部分伸出的至少两个自由端(为了方便描述,称为第一自由端和第二自由端)。其中在一些实施例中,扭簧的螺旋部分作为第一接触部分206,第二接触部分207可以是第一自由端,而第三接触部分213可以是第二自由端。考虑到低压配电装置200中结构的需要,第一自由端和第二自由端可以具有适当的长度,并可以弯折或变形以使得扭簧能够适应低压配电装置200 中第一导电触点203、第二导电触点204以及测试触点212的设置。In some embodiments, as shown in FIG. 4, the conductive member 205 can be a torsion spring. The torsion spring generally has a helical portion and at least two free ends extending from the helical portion (referred to as a first free end and a second free end for convenience of description). In some embodiments, the helical portion of the torsion spring acts as the first contact portion 206, the second contact portion 207 can be the first free end, and the third contact portion 213 can be the second free end. In view of the need for construction in the low voltage power distribution apparatus 200, the first free end and the second free end may have suitable lengths and may be bent or deformed to enable the torsion spring to accommodate the first conductive contact in the low voltage power distribution apparatus 200. 203. The second conductive contact 204 and the test contact 212 are disposed.
在一些实施例中,低压配电装置200还包括警报单元(未示出)。警报单元能够在故障检测机构检测到电路中存在脱扣条件的情况下向用户发出警示。例如,警报单元可以根据脱扣条件而发出灯光警报、声音警报或两者的组合来警示用户电路中存在故障,需要尽快维护。In some embodiments, the low voltage power distribution device 200 also includes an alarm unit (not shown). The alarm unit is capable of alerting the user if the fault detection mechanism detects that there is a trip condition in the circuit. For example, the alarm unit can issue a light alarm, an audible alarm, or a combination of both depending on the trip condition to alert the user that there is a fault in the circuit that requires maintenance as soon as possible.
上面结合图1至图5详细介绍了对低压配电装置结构上的改进。同样重要的是,为了更好地解决传统的低压配电装置存在的一些问题,控制单元202的控制逻辑也需要相应地改进。这就从控制低压配电装置200脱扣的方法上来体现。The improvement in the structure of the low-voltage power distribution device is described in detail above with reference to Figs. It is also important that the control logic of control unit 202 also needs to be improved accordingly in order to better address some of the problems associated with conventional low voltage power distribution units. This is reflected in the method of controlling the trip of the low voltage power distribution unit 200.
参见图6,示出了根据本公开示例性实施例的控制低压配电装置脱扣的方法的流程框图600。Referring to Figure 6, a block flow diagram 600 of a method of controlling tripping of a low voltage power distribution device is illustrated in accordance with an exemplary embodiment of the present disclosure.
在框601,检测低压配电装置200是否处于合闸状态。在一些实施例中,合闸状态可以通过如上面所描述的检测单元100来检测,也即框601可以有检测单元100来执行。检测单元100会在合闸的状态下将合闸状态信息发送至控制单元202。当然应当理解的是,在一些实施例中,该框601也可以通过其他能够检测合闸状态的任何其他部件或单元来执行。At block 601, it is detected if the low voltage power distribution device 200 is in a closed state. In some embodiments, the closing state can be detected by the detecting unit 100 as described above, that is, the block 601 can be executed by the detecting unit 100. The detecting unit 100 transmits the closing state information to the control unit 202 in the closed state. It should of course be understood that in some embodiments, the block 601 can also be performed by any other component or unit capable of detecting the closed state.
在框602,检测是否满足与低压配电装置相关联的脱扣条件。在一些实施例中,该框602可以由上面所描述的故障检测机构来执行。故障检测机构会在检测到满足脱扣条件的情况下向控制单元202发送脱扣条件信号。在一些实施例中,框602中的内容也可以由控制单元202来执行。At block 602, it is detected if the trip condition associated with the low voltage power distribution device is met. In some embodiments, the block 602 can be performed by the fault detection mechanism described above. The fault detecting mechanism may transmit a trip condition signal to the control unit 202 upon detecting that the trip condition is satisfied. In some embodiments, the content in block 602 can also be performed by control unit 202.
应当注意的是,尽管框601在框602之前描述,但是并不代表仅能按该两个框601和602的所描述的顺序执行,该方法可以按其他顺序来执行。例如,框601和框602可以同时进行,或者先执行框602的内容,然后再执行框601的内容。It should be noted that although block 601 is described before block 602, it does not mean that it can only be performed in the described order of the two blocks 601 and 602, and the method can be performed in other orders. For example, block 601 and block 602 can be performed simultaneously, or the contents of block 602 can be performed first, and then the contents of block 601 can be performed.
在框604,响应于低压配电装置200处于合闸状态并且脱扣条件被满足,使低压配电装置执行脱扣动作,以便将低压配电装置从合 闸状态切换到分闸状态。在一些实施例中,框604可以由上面所描述的控制单元202来执行。在一些实施例中,该框604可以通过控制单元202向脱口机构发送脱扣触发信号来使低压配电装置200脱扣。At block 604, in response to the low voltage power distribution device 200 being in the closed state and the trip condition being satisfied, the low voltage power distribution device is caused to perform a trip action to switch the low voltage power distribution device from the closed state to the open state. In some embodiments, block 604 can be performed by control unit 202 described above. In some embodiments, the block 604 can cause the low voltage power distribution device 200 to trip by the control unit 202 sending a trip trigger signal to the venting mechanism.
可以看出,该方法只有在满足处于合闸状态和脱扣条件两者的情况下,才会使脱扣装置脱扣。这就相当于在控制脱口时加入了闭环控制。例如在框605,当低压配电装置200处于分闸状态的情况下,不会执行脱扣动作,从而使得和执行脱扣动作相关的部件,例如脱扣机构等,不会频繁空操作而被烧坏。这时,在框606,控制单元202已处于待机状态,而不触发诸如脱扣信号的信号。It can be seen that the method will trip the trip device only if both the closed state and the tripping condition are satisfied. This is equivalent to adding closed-loop control when controlling the disconnect. For example, at block 605, when the low voltage power distribution apparatus 200 is in the open state, the tripping action is not performed, so that components related to performing the tripping action, such as tripping mechanisms, etc., are not frequently operated. Burned out. At this point, at block 606, control unit 202 is already in a standby state without triggering a signal such as a trip signal.
此外,在满足脱扣条件的情况下如果检测到低压配电装置200处于合闸状态,低压配电装置也会被执行脱扣而从合闸状态切换到分闸状态。这保证了负载电路乃至低压配电装置200的使用安全。Further, if the low-voltage power distribution device 200 is detected to be in the closed state in the case where the tripping condition is satisfied, the low-voltage power distribution device is also tripped to be switched from the closed state to the open state. This ensures safe use of the load circuit and even the low voltage power distribution unit 200.
在一些实施例中,上述方法能够应用于处于下接线状态的低压配电装置。当然,应当理解的是,该方法也能够适用于任何其他需要检测合闸状态的其他低压配电装置。在一些实施例中,上面所说的脱扣条件可以包括,但不限于电路的过压、欠压、短路、漏电和电弧故障等中的至少一项。In some embodiments, the above method can be applied to a low voltage power distribution device in a down wiring state. Of course, it should be understood that the method can also be applied to any other low voltage power distribution device that needs to detect the closing state. In some embodiments, the trip conditions described above may include, but are not limited to, at least one of overvoltage, undervoltage, short circuit, leakage, and arc fault of the circuit.
在一些实施例中,例如在框603,响应于脱扣条件被满足而向用户发出警报信号。用户会根据该警报信号,对电路或者低压配电装置进行维护,从而排除触发满足脱扣条件的故障。这进一步保证了低压配电装置200的使用安全。In some embodiments, for example, at block 603, an alert signal is sent to the user in response to the trip condition being satisfied. Based on the alarm signal, the user will perform maintenance on the circuit or the low-voltage power distribution device to eliminate the fault that triggers the trip condition. This further ensures the safe use of the low voltage power distribution unit 200.
虽然已通过示例详细展示了本公开的一些具体实施例,但是本领域技术人员应当理解,上述示例仅意图是示例性的而非限制本公开的范围。本领域技术人员应该理解,上述实施例可以被修改而不脱离本公开的范围和实质。本公开的范围是通过所附的权利要求限定的。While some specific embodiments of the present disclosure have been shown by way of example, it is understood that Those skilled in the art will appreciate that the above-described embodiments may be modified without departing from the scope and spirit of the disclosure. The scope of the disclosure is defined by the appended claims.
在说明书和下面的权利要求中,除非上下文另外需要,术语“包括”和“包含”被理解为包含所说明的成分或成分组,但不排除任 何其他成分或成分组。In the specification and the claims below, the terms "comprise" and "comprising" are understood to include the recited component or group of components, but do not exclude any other component or group of components.
本说明书中的对任何现有技术的引用不是也不应当被视为承认为暗示这些现有技术构成公知常识。The reference to any prior art in this specification is not, and should not be construed,
应当理解,以下权利要求仅是临时权利要求,并且是可能权利要求的示例,并且并不旨在将权利要求的范围限制于基于本申请的任何将来的专利申请。可能在日后在示例的权利要求中增加或删除成分,以进一步限定或重新限定本公开。It is to be understood that the following claims are only intended to be a contingent of the claims, and are not intended to limit the scope of the claims to any future patent application based on this application. The ingredients may be added or deleted in the following claims to further define or redefine the present disclosure.

Claims (10)

  1. 一种用于控制低压配电装置(200)脱扣的方法(600),其中所述方法包括:A method (600) for controlling tripping of a low voltage power distribution device (200), wherein the method comprises:
    检测(601)所述低压配电装置(200)是否处于合闸状态;Detecting (601) whether the low voltage power distribution device (200) is in a closed state;
    检测(602)是否满足与所述低压配电装置(200)相关联的脱扣条件;Detecting (602) whether a trip condition associated with the low voltage power distribution device (200) is met;
    响应于所述低压配电装置(200)处于所述合闸状态并且所述脱扣条件被满足,使所述低压配电装置(200)执行(604)脱扣动作,以便将所述低压配电装置(200)从所述合闸状态切换到分闸状态。Responding to the low voltage power distribution device (200) being in the closed state and the trip condition being satisfied, causing the low voltage power distribution device (200) to perform a (604) tripping action to The electric device (200) is switched from the closed state to the open state.
  2. 根据权利要求1所述的方法,其中所述脱扣条件包括过压、欠压、短路、漏电和电弧故障中的至少一种。The method of claim 1 wherein said tripping condition comprises at least one of an overvoltage, an undervoltage, a short circuit, an electrical leakage, and an electrical arc fault.
  3. 根据权利要求1所述的方法,还包括:The method of claim 1 further comprising:
    响应于所述脱扣条件被满足,向用户发出(603)警报信号。In response to the trip condition being satisfied, an alert signal is sent (603) to the user.
  4. 一种低压配电装置(200),其特征在于,所述低压配电装置(200)包括:A low voltage power distribution device (200), characterized in that the low voltage power distribution device (200) comprises:
    检测单元(100),其被配置为在所述低压配电装置(200)处于合闸状态的情况下向控制单元(202)发出合闸状态信号;以及a detection unit (100) configured to issue a closing state signal to the control unit (202) if the low voltage power distribution device (200) is in a closed state;
    所述控制单元(202),其耦合至所述检测单元(100)并且被配置为在接收到所述合闸状态信号以及满足脱扣条件的情况下,使所述低压配电装置(200)从所述合闸状态切换到分闸状态以便脱扣。The control unit (202) coupled to the detection unit (100) and configured to cause the low voltage power distribution device (200) to receive the closing status signal and satisfy a trip condition Switching from the closed state to the open state for tripping.
  5. 根据权利要求4所述的低压配电装置(200),其特征在于,还包括:The low-voltage power distribution apparatus (200) according to claim 4, further comprising:
    电源(215),被配置为至少向所述检测单元(100)供电;a power source (215) configured to supply power to at least the detecting unit (100);
    连通组件(201),耦合至所述检测单元(100),可操作以在所述合闸状态下将所述检测单元(100)与所述电源(215)连通。A communication component (201) coupled to the detection unit (100) is operable to communicate the detection unit (100) with the power source (215) in the closed state.
  6. 根据权利要求5所述的低压配电装置(200),其特征在于,所述连通组件(201)包括:The low-voltage power distribution apparatus (200) according to claim 5, wherein the communication component (201) comprises:
    第一导电触点(203),耦合至所述检测单元(100),a first conductive contact (203) coupled to the detection unit (100),
    第二导电触点(204),耦合至所述电源(215),以及a second conductive contact (204) coupled to the power source (215), and
    导电部件(205),包括第一接触部分(206)和第二接触部分(207),所述第一接触部分(206)耦合至所述第一导电触点(203),所述第二接触部分(207)能够在所述合闸状态下接触所述第二导电触点(204)以将所述检测单元(100)与所述电源(215)接通。A conductive member (205) includes a first contact portion (206) and a second contact portion (207), the first contact portion (206) being coupled to the first conductive contact (203), the second contact The portion (207) is capable of contacting the second conductive contact (204) in the closed state to connect the detection unit (100) to the power source (215).
  7. 根据权利要求5所述的低压配电装置(200),其特征在于,还包括:The low-voltage power distribution apparatus (200) of claim 5, further comprising:
    手柄(208),能够响应于用户的操作而在合闸位置和分闸位置之间切换,从而将所述低压配电装置(200)在所述合闸状态与所述分闸状态之间切换;以及a handle (208) capable of switching between a closing position and a opening position in response to a user operation, thereby switching the low voltage power distribution device (200) between the closing state and the opening state ;as well as
    驱动部件(209),可枢转地设置在所述低压配电装置(200)中,并且可操作以响应于所述手柄(208)从所述分闸位置切换到所述合闸位置而从第一位置(P1)转动到第二位置(P2),以使所述第二接触部分(207)接触所述第二导电触点(204)。a drive member (209) pivotally disposed in the low voltage power distribution device (200) and operable to switch from the trip position to the close position in response to the handle (208) The first position (P1) is rotated to the second position (P2) such that the second contact portion (207) contacts the second conductive contact (204).
  8. 根据权利要求5所述的低压配电装置(200),其特征在于,所述导电部件(205)还包括第三接触部分(213),并且所述低压配电装置(200)还包括测试组件(210),所述测试组件(210)包括:The low-voltage power distribution apparatus (200) according to claim 5, wherein the conductive member (205) further includes a third contact portion (213), and the low-voltage power distribution device (200) further includes a test component (210), the test component (210) includes:
    测试单元(211),用于测试低压配电装置(200)的有效性;a test unit (211) for testing the effectiveness of the low voltage power distribution device (200);
    测试触点(212),耦合至所述测试单元(211);以及Testing a contact (212) coupled to the test unit (211);
    测试按钮(214),其响应于用户的按压而驱动所述第三接触部分(213)接触所述测试触点(212),从而在所述第二接触部分(207)接触所述第二导电触点(204)的情况下将所述测试单元(211)与所述电源(215)连通。a test button (214) that drives the third contact portion (213) to contact the test contact (212) in response to a user's depression, thereby contacting the second conductive portion at the second contact portion (207) The test unit (211) is in communication with the power source (215) in the case of a contact (204).
  9. 根据权利要求8所述的低压配电装置(200),其特征在于,所述第一导电触点(203)、第二导电触点(204)和测试触点(212)分别是设置在所述低压配电装置(200)内不同位置的导电销轴。The low voltage power distribution unit (200) according to claim 8, wherein said first conductive contact (203), said second conductive contact (204) and said test contact (212) are respectively disposed at Conductive pins at different locations within the low voltage power distribution unit (200).
  10. 根据权利要求9所述的低压配电装置(200),其特征在于,所述导电部件(205)是扭簧,并且所述第一接触部分(206)是所 述扭簧的螺旋部分,所述第二接触部分(207)是从所述扭簧的所述螺旋部分伸出的第一自由端,所述第三接触部分(213)是从所述扭簧的所述螺旋部分伸出的第二自由端。The low-voltage power distribution apparatus (200) according to claim 9, wherein said conductive member (205) is a torsion spring, and said first contact portion (206) is a spiral portion of said torsion spring, The second contact portion (207) is a first free end extending from the spiral portion of the torsion spring, and the third contact portion (213) is extended from the spiral portion of the torsion spring Second free end.
PCT/CN2018/114395 2017-11-07 2018-11-07 Low-voltage power distribution device and method for controlling low-voltage power distribution device tripping WO2019091406A1 (en)

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EP18875259.6A EP3706154B1 (en) 2017-11-07 2018-11-07 Low-voltage power distribution device and method for controlling low-voltage power distribution device tripping
AU2018363439A AU2018363439B2 (en) 2017-11-07 2018-11-07 Low-voltage power distribution device and method for controlling low-voltage power distribution device tripping
RU2020118381A RU2742141C1 (en) 2017-11-07 2018-11-07 Low-voltage distribution device and method of controlling opening of low-voltage switchgear

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EP3706154B1 (en) 2023-08-30
CN109755078A (en) 2019-05-14

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