CN113629535A - Low-voltage bypass live-wire work control box - Google Patents

Low-voltage bypass live-wire work control box Download PDF

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Publication number
CN113629535A
CN113629535A CN202110870251.5A CN202110870251A CN113629535A CN 113629535 A CN113629535 A CN 113629535A CN 202110870251 A CN202110870251 A CN 202110870251A CN 113629535 A CN113629535 A CN 113629535A
Authority
CN
China
Prior art keywords
phase
low
circuit breaker
disconnecting link
voltage circuit
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
CN202110870251.5A
Other languages
Chinese (zh)
Inventor
邓代国
余涛
崔琳
王才永
谭业涛
黄琳榃
刘洪涛
李晨
邹彦
艾福洲
梁伟
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.)
Yichang Power Supply Co of State Grid Hubei Electric Power Co Ltd
Original Assignee
Yichang Power Supply Co of State Grid Hubei Electric Power Co Ltd
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 Yichang Power Supply Co of State Grid Hubei Electric Power Co Ltd filed Critical Yichang Power Supply Co of State Grid Hubei Electric Power Co Ltd
Priority to CN202110870251.5A priority Critical patent/CN113629535A/en
Publication of CN113629535A publication Critical patent/CN113629535A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26Casings; Parts thereof or accessories therefor
    • H02B1/46Boxes; Parts thereof or accessories therefor
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18Status alarms
    • G08B21/24Reminder alarms, e.g. anti-loss alarms
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00Audible signalling systems; Audible personal calling systems
    • G08B3/10Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20Interlocking, locking, or latching mechanisms
    • H01H9/26Interlocking, locking, or latching mechanisms for interlocking two or more switches
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26Casings; Parts thereof or accessories therefor
    • H02B1/52Mobile units, e.g. for work sites
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems

Abstract

The invention belongs to the technical field of power systems, and particularly relates to a low-voltage bypass live-line work control box. The low-voltage bypass operation control box comprises a box body, a disconnecting link and a low-voltage circuit breaker; the method is characterized in that: the circuit comprises a switch, a switch and a switch, wherein 2 coil terminals of the switch is correspondingly connected with the switch and the switch; the auxiliary contacts of the 3 relays are connected in parallel and then connected in series with the battery and the alarm. The control box automatically alarms when the wiring is wrong, can prevent short circuit, prevent electric arcs from hurting people when the load is cut off and connected, and prevent override tripping when a bypass power supply area fails.

Description

Low-voltage bypass live-wire work control box
Technical Field
The invention belongs to the technical field of electric power, and particularly relates to a low-voltage bypass live-wire work control box.
Background
The low-voltage power supply of the power distribution network is the last ring of safe and reliable power supply, the low-voltage transformation of the power distribution network is realized, the user access amount is large, the low-voltage line faults are low, more than 80% of the work orders of the national network 95598 system are low-voltage faults, and part of the low-voltage line faults cannot be repaired in time. The low pressure live working environment is complicated relatively, and the live working risk is great, develops a low pressure bypass live working control box now and improves low pressure live working safety, reduces the low pressure and reforms transform the user power failure under the circumstances such as user's access, fault handling, improves the power supply reliability, increases the power supply volume, promotes the power consumption customer and obtains electric power happiness index.
Disclosure of Invention
The invention aims to provide a low-voltage bypass live working control box which can automatically give an alarm when a wiring error occurs.
In order to achieve the purpose, the invention adopts the technical scheme that: the low-voltage bypass operation control box comprises a box body 1, a disconnecting link 4 and a low-voltage circuit breaker 8; the disconnecting link 4 and the low-voltage circuit breaker 8 are respectively installed on a front side panel 9 of the box body 1, the front side panel 9 is provided with inlet side terminals 10 of an A1 phase, a B1 phase, a C1 phase and an N1 phase of an inlet side of the low-voltage circuit breaker 8, the inlet side terminals 10 of the A1 phase, the B1 phase, the C1 phase and the N1 phase are all located below the low-voltage circuit breaker 8, and the A1 phase, the B1 phase, the C1 phase and the N1 phase of the inlet side of the low-voltage circuit breaker 8 are respectively connected with the inlet side terminals 10 of the A1 phase, the B1 phase, the C1 phase and the N1 phase; the front panel 9 is provided with outlet side terminals 6 of a2 phase, a B2 phase, a C2 phase and an N2 phase on the outlet side of the low-voltage circuit breaker 8, the outlet side terminals 6 of the a2 phase, the B2 phase, the C2 phase and the N2 phase are all positioned above the low-voltage circuit breaker 8, and the a2 phase, the B2 phase, the C2 phase and the N2 phase circuits on the outlet side of the low-voltage circuit breaker 8 are respectively connected with the outlet side terminals 6 of the a2 phase, the B2 phase, the C2 phase and the N2 phase; the A1 phase line at the incoming line side of the disconnecting link 4 is connected with the A1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker 8, the B1 phase line at the incoming line side of the disconnecting link 4 is connected with the B1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker 8, and the C1 phase line at the incoming line side of the disconnecting link 4 is connected with the C1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker 8; the A2 phase line on the outgoing line side of the disconnecting link 4 is connected with the A2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker 8, the B2 phase line on the outgoing line side of the disconnecting link 4 is connected with the B2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker 8, and the C2 phase line on the outgoing line side of the disconnecting link 4 is connected with the A2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker 8;
the method is characterized in that: the circuit also comprises an alarm 5 and 3 relays 11, wherein 2 coil terminals of the first relay are respectively correspondingly connected with an A1 phase circuit on the wire inlet side of the disconnecting link 4 and an A2 phase circuit on the wire outlet side of the disconnecting link 4, 2 coil terminals of the second relay are respectively correspondingly connected with a B1 phase circuit on the wire inlet side of the disconnecting link 4 and a B2 phase circuit on the wire outlet side of the disconnecting link 4, and 2 coil terminals of the third relay are respectively correspondingly connected with a C1 phase circuit on the wire inlet side of the disconnecting link 4 and a C2 phase circuit on the wire outlet side of the disconnecting link 4; the auxiliary contacts of the 3 relays 11 are connected in parallel and then connected in series with the battery and the alarm 5.
The alarm 5 is a voice alarm.
And the A2 phase, the B2 phase and the C2 phase circuits on the outgoing line side of the low-voltage circuit breaker 8 are respectively provided with a current transformer 13, the current transformer 13 is connected with an ammeter 7 through a lead, and the ammeter 7 is arranged on the front side panel 9.
4 universal traveling wheels 3 are mounted on the bottom panel of the box body 1.
And a pull rod 2 is arranged on the rear panel of the box body 1.
And the mechanical interlocking device 12 is arranged on the operating mechanism of the disconnecting link 4 and the operating mechanism of the low-voltage circuit breaker 8.
The invention has the beneficial effects that: the low-voltage bypass live-line work control box is popularized and applied to low-voltage live-line work, firstly, the safety of operators can be guaranteed, and live-line work can be switched to work in a power failure environment for a long time; the power supply reliability is improved, uninterrupted power supply is guaranteed through bypass power supply, the power supply reliability is improved, the electricity consumption of people is guaranteed, and the enterprise image and social benefits are improved; thirdly, when the wiring is wrong, the alarm is automatically given out, so that the short circuit can be prevented; fourthly, electric arcs generated when the load is cut off and connected are prevented from hurting people, and override tripping is prevented when a bypass power supply area fails; fifthly, the electricity selling quantity is increased, and the enterprise benefit is improved. The control box is simple and practical in structure, convenient to operate and maintain, low in investment, reusable and obvious in economic benefit.
Drawings
FIG. 1 is a perspective view of the housing of the present invention.
Fig. 2 is a front view of the case of the present invention.
Fig. 3 is a schematic diagram of the circuit of the present invention.
In the figure: the system comprises a box body 1, a pull rod 2, a traveling wheel 3, a disconnecting link 4, an alarm 5, an outgoing line side terminal 6, an ammeter 7, a low-voltage circuit breaker 8, a front panel 9, an incoming line side terminal 10, a relay 11, a mechanical interlocking device 12, a current transformer 13, an outgoing line side 14 and an incoming line side 15.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, the low-voltage bypass live-working control box includes a box body 1, a disconnecting link 4 and a low-voltage circuit breaker (or switch) 8; the disconnecting link 4 and the low-voltage circuit breaker (or called as circuit breaker) 8 are respectively installed on a front panel 9 of the box body 1, the front panel 9 is provided with inlet side terminals 10 (corresponding to 4 inlet side terminals) of an A1 phase, a B1 phase, a C1 phase and an N1 phase at the inlet side of the low-voltage circuit breaker 8, the inlet side terminals 10 of the A1 phase, the B1 phase, the C1 phase and the N1 phase are all positioned below the low-voltage circuit breaker 8, and the A1 phase, the B1 phase, the C1 phase and the N1 phase at the inlet side of the low-voltage circuit breaker 8 are respectively connected with the inlet side terminals 10 of the A1 phase, the B1 phase, the C1 phase and the N1 phase; the front panel 9 is provided with outlet side terminals 6 of a2 phase, a B2 phase, a C2 phase and an N2 phase on the outlet side of the low-voltage circuit breaker 8, the outlet side terminals 6 of the a2 phase, the B2 phase, the C2 phase and the N2 phase are all positioned above the low-voltage circuit breaker 8, and the a2 phase, the B2 phase, the C2 phase and the N2 phase circuits on the outlet side of the low-voltage circuit breaker 8 are respectively connected with the outlet side terminals 6 of the a2 phase, the B2 phase, the C2 phase and the N2 phase; the A1 phase line at the incoming line side of the disconnecting link 4 is connected with the A1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker 8, the B1 phase line at the incoming line side of the disconnecting link 4 is connected with the B1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker 8, and the C1 phase line at the incoming line side of the disconnecting link 4 is connected with the C1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker 8; the A2 phase line on the outgoing line side of the disconnecting link 4 is connected with the A2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker 8, the B2 phase line on the outgoing line side of the disconnecting link 4 is connected with the B2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker 8, and the C2 phase line on the outgoing line side of the disconnecting link 4 is connected with the A2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker 8;
the circuit also comprises an alarm 5 and 3 relays 11, wherein 2 coil terminals of the first relay are respectively correspondingly connected with an A1 phase circuit on the wire inlet side of the disconnecting link 4 and an A2 phase circuit on the wire outlet side of the disconnecting link 4, 2 coil terminals of the second relay are respectively correspondingly connected with a B1 phase circuit on the wire inlet side of the disconnecting link 4 and a B2 phase circuit on the wire outlet side of the disconnecting link 4, and 2 coil terminals of the third relay are respectively correspondingly connected with a C1 phase circuit on the wire inlet side of the disconnecting link 4 and a C2 phase circuit on the wire outlet side of the disconnecting link 4; the auxiliary contacts (normally open contacts and normally closed contacts) of the 3 relays 11 are connected in parallel and then are connected in series with the battery and the alarm 5.
The alarm 5 is a voice alarm (which can be composed of an alarm circuit and a loudspeaker, and the output end of the alarm circuit is connected with the loudspeaker); but may also be a speaker. When the phases at the two sides of the switch are not corresponding, the relay is driven to act, the auxiliary contact is closed, the alarm is switched on to alarm in time to inform of a wiring error, and workers can correct the wiring error in time.
A2 phase, B2 phase and C2 phase circuits on the outgoing line side of the low-voltage circuit breaker 8 are respectively provided with a current transformer 13, the current transformer 13 is connected with an ammeter 7 through a lead, and the ammeter 7 is arranged on the front side panel 9 (the ammeter 7 is 3, and is positioned below the outgoing line side terminal 6 and above the low-voltage circuit breaker 8).
4 universal traveling wheels 3 are mounted on the bottom panel of the box body 1.
And a pull rod 2 (a telescopic pull rod) is arranged on the rear panel of the box body 1.
And the mechanical interlocking device 12 is arranged on the operating mechanism of the disconnecting link 4 and the operating mechanism of the low-voltage circuit breaker 8.
The low-voltage bypass live-line work control box is a comprehensive control device integrating a low-voltage circuit breaker, a disconnecting link, an ammeter and an alarm, can be operated under the conditions of electrification and load, is automatically disconnected when a fault occurs, and avoids influencing the reliable power supply of related systems. The low-voltage bypass live-line work control box is convenient and flexible when being accessed, one control box can complete the access of three-phase four-wire and single-phase power supply modes, and the line length is flexibly and conveniently selected. The automatic alarm device has the function of automatic alarm of the wiring phase, and can automatically alarm when the wiring is wrong, so that the short circuit is prevented. The draw-bar box type structure is convenient to transport and simple to manage.
The low-voltage circuit breaker 8 and the disconnecting link 4 of the low-voltage bypass live working control box are connected in parallel, the disconnecting link cannot be operated when the low-voltage circuit breaker 8 is disconnected, and the disconnecting link can be pulled and closed only after the low-voltage circuit breaker 8 is closed, so that the disconnecting link is effectively prevented from being pulled and closed under load. When the phases on the two sides of the low-voltage circuit breaker 8 are connected in a wrong mode, a pressure difference is generated, the voice alarm acts to remind a worker that the circuit breaker cannot be closed due to a wiring error. When the operation line and the bypass are operated in parallel, the control box disconnecting link is closed, so that the condition that the low-voltage circuit breaker 8 is operated and the upper-level switch does not operate in the process of removing (accessing) the operation line by a worker to cause the electric arc of the line with load to cut off (access) to hurt the worker is prevented. Before the bypass power supply, the current protection of the low-voltage circuit breaker 8 is adjusted according to the load current, when the bypass power supply is carried out, the low-voltage circuit breaker 8 is closed, the disconnecting link is pulled open, the supplied load is tripped during the fault, and the power supply of a superior power supply is not influenced.

Claims (6)

1. The low-voltage bypass live working control box comprises a box body (1), a disconnecting link (4) and a low-voltage circuit breaker (8); the disconnecting link (4) and the low-voltage circuit breaker (8) are respectively installed on a front side panel (9) of the box body (1), the front side panel (9) is provided with wire inlet side terminals (10) of an A1 phase, a B1 phase, a C1 phase and an N1 phase on the wire inlet side of the low-voltage circuit breaker (8), the wire inlet side terminals (10) of the A1 phase, the B1 phase, the C1 phase and the N1 phase are all located below the low-voltage circuit breaker (8), and wire inlet side terminals (10) of the A1 phase, the B1 phase, the C1 phase and the N1 phase on the wire inlet side of the low-voltage circuit breaker (8) are respectively connected with the corresponding wire inlet side terminals (10) of the A1 phase, the B1 phase, the C1 phase and the N1 phase; the front panel (9) is provided with outlet side terminals (6) of an A2 phase, a B2 phase, a C2 phase and an N2 phase at the outlet side of the low-voltage circuit breaker (8), the outlet side terminals (6) of the A2 phase, the B2 phase, the C2 phase and the N2 phase are all positioned above the low-voltage circuit breaker (8), and the A2 phase, the B2 phase, the C2 phase and the N2 phase at the outlet side of the low-voltage circuit breaker (8) are respectively connected with the outlet side terminals (6) of the A2 phase, the B2 phase, the C2 phase and the N2 phase; a1 phase line at the incoming line side of the disconnecting link (4) is connected with an A1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker (8), B1 phase line at the incoming line side of the disconnecting link (4) is connected with a B1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker (8), and C1 phase line at the incoming line side of the disconnecting link (4) is connected with a C1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker (8); the A2 phase line on the outgoing line side of the disconnecting link (4) is connected with the A2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker (8), the B2 phase line on the outgoing line side of the disconnecting link (4) is connected with the B2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker (8), and the C2 phase line on the outgoing line side of the disconnecting link (4) is connected with the A2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker (8);
the method is characterized in that: the circuit comprises a disconnecting link (4), a switch (2), an alarm (5) and 3 relays (11), wherein 2 coil terminals of the first relay are respectively correspondingly connected with an A1 phase circuit on the incoming line side of the disconnecting link (4) and an A2 phase circuit on the outgoing line side of the disconnecting link (4), 2 coil terminals of the second relay are respectively correspondingly connected with a B1 phase circuit on the incoming line side of the disconnecting link (4) and a B2 phase circuit on the outgoing line side of the disconnecting link (4), and 2 coil terminals of the third relay are respectively correspondingly connected with a C1 phase circuit on the incoming line side of the disconnecting link (4) and a C2 phase circuit on the outgoing line side of the disconnecting link (4); the auxiliary contacts of the 3 relays (11) are connected in parallel and then connected in series with the battery and the alarm (5).
2. The low voltage bypass live working control box according to claim 1, wherein: the alarm (5) is a voice alarm.
3. The low voltage bypass live working control box according to claim 1, wherein: a2 phase, B2 phase and C2 phase circuits on the outgoing line side of the low-voltage circuit breaker (8) are respectively provided with a current transformer (13), the current transformer (13) is connected with an ammeter (7) through a lead, and the ammeter (7) is arranged on a front side panel (9).
4. The low pressure bypass service control pod of claim 1 wherein: 4 universal traveling wheels (3) are installed on the bottom panel of the box body (1).
5. The low voltage bypass live working control box according to claim 1, wherein: the rear panel of the box body (1) is provided with a pull rod (2).
6. The low voltage bypass live working control box according to claim 1, wherein: and the operating mechanisms of the disconnecting link (4) and the low-voltage circuit breaker (8) are provided with mechanical interlocking devices (12).
CN202110870251.5A 2021-07-30 2021-07-30 Low-voltage bypass live-wire work control box Pending CN113629535A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110870251.5A CN113629535A (en) 2021-07-30 2021-07-30 Low-voltage bypass live-wire work control box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110870251.5A CN113629535A (en) 2021-07-30 2021-07-30 Low-voltage bypass live-wire work control box

Publications (1)

Publication Number Publication Date
CN113629535A true CN113629535A (en) 2021-11-09

Family

ID=78381692

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110870251.5A Pending CN113629535A (en) 2021-07-30 2021-07-30 Low-voltage bypass live-wire work control box

Country Status (1)

Country Link
CN (1) CN113629535A (en)

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