CN207835061U - A kind of ring main unit two-way inlet wire is switched fast control circuit - Google Patents

A kind of ring main unit two-way inlet wire is switched fast control circuit Download PDF

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Publication number
CN207835061U
CN207835061U CN201820252862.7U CN201820252862U CN207835061U CN 207835061 U CN207835061 U CN 207835061U CN 201820252862 U CN201820252862 U CN 201820252862U CN 207835061 U CN207835061 U CN 207835061U
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Prior art keywords
level
contact
relay
normally
switch
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CN201820252862.7U
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Chinese (zh)
Inventor
王丹
王志鹏
代伟
魏国良
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Nissin Hengtong Electric Co Ltd
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Nissin Hengtong Electric Co Ltd
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Abstract

The utility model discloses a kind of ring main unit two-way inlet wires to be switched fast control circuit, it is characterized in that, including main control circuit and standby control circuit, the main control circuit includes level-one closing relay contact, two level closing relay contact, first closing coil, first intermediate relay coil, first live locking contact, first switch level-one normally-closed contact, first switch two level normally-closed contact, first switch three-level normally opened contact, first switch level Four normally-closed contact, first closing relay coil, first switch knob, first time relay coil, level-one intermediate relay normally-closed contact, two level intermediate relay normally-closed contact, one level temporal relay timing closing contact, first switching winding, first opening button and the first intermediate relay coil;It is switched fast by main control circuit and standby control circuit when power supply all the way breaks down, reduces security risk.

Description

A kind of ring main unit two-way inlet wire is switched fast control circuit
Technical field
The utility model is related to power transmission and distribution control field, especially a kind of ring main unit two-way inlet wire is switched fast control electricity Road.
Background technology
With the continuous development of urban construction, urban electricity supply load is growing, and the quality and reliability to power supply are also got over Come higher, some important or sensitive loads, even short supply interruption, will also result in great loss and influence.Therefore ring Net power supply mode is the first choice of urban distribution network structure.Ring main unit power supply benefit be, each distribution branch both can with it Left side main line takes power supply, and can take power supply by its right side main line.When left side, main line is out of order, it just continues from right side main line It is powered, and when right side main line is out of order, just from left side, main line continues to be powered for it, so, although general supply It is single service, but is obtained similar to the material benefit supplied power with double circuit for each distribution branch, to improves power supply Reliability.Existing technology is to use two ring main units mostly with scheme, and one is main incoming line cabinet, and in addition one enters as ring Incoming line cabinet, and completed by other equipment to form a control system.Again because two cabinet cooperate, operation is numerous Trivial, wiring is complicated, causes installation quantities big, and because complicated for operation make electrical hidden danger increase, cannot quickly solve to stop The electric time.
Utility model content
Utility model aims to solve the above the deficiencies in the prior art, and it is quick to provide a kind of ring main unit two-way inlet wire Control switching circuit.
To realize that object above provides following technical scheme:
A kind of ring main unit two-way inlet wire is switched fast control circuit, which is characterized in that including main control circuit and spare control Circuit processed, the main control circuit include level-one closing relay contact, two level closing relay contact, the first closing coil, First intermediate relay coil, the first live locking contact, first switch level-one normally-closed contact, first switch two level are normally closed tactile Point, first switch three-level normally opened contact, first switch level Four normally-closed contact, the first closing relay coil, the first switch knob, First time relay coil, level-one intermediate relay normally-closed contact, two level intermediate relay normally-closed contact, one level temporal relay Device timing closing contact, the first switching winding, the first opening button and the first intermediate relay coil;
The standby control circuit include the second closing coil, the second intermediate relay coil, the second live locking contact, Second switch level-one normally-closed contact, second switch two level normally-closed contact, second switch three-level normally opened contact, second switch level Four are normal Closed contact, the second switch knob, the second time relay coil, three-level intermediate relay normally-closed contact, level Four intermediate relay Normally-closed contact, two level time relay timing closing contact, the second closing relay coil, three-level closing relay contact, four Grade closing relay contact, the second opening button and the second switching winding;
Level-one closing relay contact, the first closing coil and two level closing relay contact series, among first Relay coil and the first live locking contact in parallel, busbar live locking contact series, second switch level-one normally-closed contact, First time relay coil and the series connection of level-one intermediate relay normally-closed contact, first switch three-level normally opened contact, the first separating brake Coil and the series connection of the first opening button, first opening button is in parallel with two level intermediate relay normally-closed contact, and described second Switch two level normally-closed contact, first switch level Four normally-closed contact, the first closing relay coil and the series connection of the first switch knob, institute The first switch knob and two level time relay timing closing contact shunt are stated, three-level closing relay contact, second are closed Brake cable circle and level Four closing relay contact series, the second intermediate relay coil and the second live locking contact series, Second live locking contact and busbar live locking contact shunt, the first switch level-one normally-closed contact, the second time Relay coil and the series connection of three-level intermediate relay normally-closed contact, the second switch three-level normally opened contact, the second switching winding It connects with the second opening button, second opening button is in parallel with level Four intermediate relay normally-closed contact, the first switch Two level normally-closed contact, second switch level Four normally-closed contact, the second closing relay coil and the series connection of the second switch knob, second closes Lock button and one level temporal relay timing closing contact shunt.
The beneficial effects of the utility model are:It is broken down in power supply all the way by main control circuit and standby control circuit Shi Jinhang is switched fast, and reduces security risk.
Description of the drawings
Fig. 1 circuit diagrams in order to control;
Fig. 2 is electrical control schematic.
Specific implementation mode
The utility model is described in detail with attached drawing with reference to embodiments.
A kind of ring main unit two-way inlet wire as shown in Figure 1 is switched fast control circuit, including main control circuit and spare control Circuit processed, main control circuit include level-one closing relay contact 1K2-1, two level closing relay contact 1K2-2, the first combined floodgate Coil 1Y2, the first intermediate relay coil 1KA, the first live locking contact 1DXN, first switch level-one normally-closed contact 1S5-1, First switch two level normally-closed contact 1S5-2, first switch three-level normally opened contact 1S5-3, first switch level Four normally-closed contact 1S5- 4, the first closing relay coil 1K2, the first switch knob 1HA, first time relay coil 1KT, level-one intermediate relay Normally-closed contact 1KA-1, two level intermediate relay normally-closed contact 1KA-2, one level temporal relay timing closing contact 1KT-1, One switching winding 1Y1, the first opening button 1TA and the first intermediate relay coil 1KA.
The standby control circuit is closed including the second closing coil 2Y2, the second intermediate relay coil 2KA, the second electrification It is normal to lock contact 2DXN, second switch level-one normally-closed contact 2S5-1, second switch two level normally-closed contact 2S5-2, second switch three-level Open contact 2S5-3, second switch level Four normally-closed contact 2S5-4, the second switch knob 2HA, the second time relay coil 2KT, Three-level intermediate relay normally-closed contact 2KA-1, level Four intermediate relay normally-closed contact 2KA-2, the delay of the two level time relay are closed Conjunction contact 2KT-1, the second closing relay coil 2K2, three-level closing relay contact 2K2-1, level Four closing relay contact 2K2-2, the second opening button 2TA and the second switching winding 2Y1.
Level-one closing relay contact 1K2-1, the first closing coil 1Y2 and the contact 1K2-2 series connection of two level closing relay, First intermediate relay coil 1KA connects with the first live locking contact 1DXN, busbar live locking contact MX-DXN in parallel, Second switch level-one normally-closed contact 2S5-1, first time relay coil 1KT and level-one intermediate relay normally-closed contact 1KA-1 Series connection, first switch three-level normally opened contact 1S5-3, the first switching winding 1Y1 and the first opening button 1TA series connection, the first separating brake Button 1TA is in parallel with two level intermediate relay normally-closed contact 1KA-2, second switch two level normally-closed contact 2S5-2, first switch four Grade normally-closed contact 1S5-4, the first closing relay coil 1K2 and the first switch knob 1HA series connection, the first switch knob 1HA with Two level time relay timing closing contact 2KT-1 is in parallel, three-level closing relay contact 2K2-1, the second closing coil 2Y2 and The contact 2K2-2 series connection of level Four closing relay, the second intermediate relay coil 2KA connect with the second live locking contact 2DXN, Second live locking contact 2DXN is in parallel with busbar live locking contact MX-DXN, first switch level-one normally-closed contact 1S5-1, Two time relay coil 2KT and the 2KA-1 series connection of three-level intermediate relay normally-closed contact, second switch three-level normally opened contact 2S5- 3, the second switching winding 2Y1 and the second opening button 2TA series connection, the second opening button 2TA are normally closed tactile with level Four intermediate relay Point 2KA-2 is in parallel, first switch two level normally-closed contact 1S5-2, second switch level Four normally-closed contact 2S5-4, the second combined floodgate relay Device coil 2K2 and the second switch knob 2HA series connection, the second switch knob 2HA and one level temporal relay timing closing contact 1KT-1 is in parallel.
Embodiment one
The electrical control schematic being illustrated in figure 2 where control circuit, including the first incoming power 9, the second inlet wire electricity Source 10 and busbar 1, the first incoming power 9 connect the first live locking structure 5, the first on-load switch 3 to mother by the first optical cable 7 Line, the second incoming power 10 connect the second live locking structure 6, the second on-load switch 4 to busbar 1, busbar by the second optical cable 8 1 connection busbar live locking structure 2, the first live locking structure 3 connect the first display lamp, the connection of the second live locking structure Second display lamp, busbar live locking structure 2 connect busbar display lamp, and the first on-load switch 34 and the second on-load switch join It is dynamic, control on/off switch.
When needing the first incoming power 9 as the second incoming power of main power source as stand-by power supply, operator presses the First switch knob 1HA of one on-load switch 3, the first closing relay coil 1K2 energized actions, level-one closing relay contact 1K2-1 and two level closing relay contact 1K2-2 is converted to closed state by off-state, and the first closing coil 1Y2 obtains electronic Make, the first on-load switch 3 is converted to "on" position, the first switch three-level normally opened contact of the first on-load switch 3 by off-state 1S5-3 is converted to closed state by off-state, and the first switch level-one normally-closed contact 1S5-1 of the first on-load switch 3, first open It closes two level normally-closed contact 1S5-2 and first switch level Four normally-closed contact 1S5-4 and off-state is converted to by closed state.Second is negative 4 shutting-brake control loop of lotus switch is off-state, and the second on-load switch 4 cannot carry out closing operation, this is between two switches The electrical interlocks of setting.First incoming power, 9 normal power supply at this time.
When the failure of the first incoming power 9, so as to cause 1 dead electricity of the first incoming power 9 and busbar, because of the first inlet wire Power supply 9 and busbar 1 do not have voltage, and the first live locking structure 5 and the second live locking structure 6 are converted to disconnection by closed state State, the first intermediate relay coil 1KA dead electricity are converted to original state, the normally-closed contact of the first intermediate relay coil 1KA Level-one intermediate relay normally-closed contact 1KA-1 and two level intermediate relay normally-closed contact 1KA-2 are converted to closure by off-state State.At this point, the first switching winding 1Y1 energized actions of the first on-load switch 3,3 separating brake of the first on-load switch, auxiliary contact are extensive Again to original state, first switch level-one normally-closed contact 1S5-1, the first switch two level normally-closed contact of the first on-load switch 3 1S5-2 and first switch level Four normally-closed contact 1S5-4 is converted to closed state first switch three-level normally opened contact by off-state 1S5-3 is changed to off-state by closed state dress.Second on-load switch, 4 shutting-brake control loop is restored to waiting for "on" position.First Time relay coil 1KT energized actions, one level temporal relay timing closing contact 1KT-1 timing closings.Second load is opened 4 the second closing relay coil 2K2 energized actions are closed, three-level closing relay contact 2K2-1 and level Four closing relay touch Point 2K2-2 is converted to closed state by off-state, and the second closing coil 2Y2 energized actions of the second on-load switch 4, second is negative Lotus switch 4 closes a floodgate.Second switch three-level normally opened contact 2S5-3 is converted to closed state by off-state, the second on-load switch 4 Second switch level-one normally-closed contact 2S5-1, second switch two level normally-closed contact 2S5-2 and second switch level Four normally-closed contact 2S5- 4 are converted to off-state by closed state.The second switch level-one normally-closed contact 2S5-1 of second on-load switch 4 is off-state When, 3 shutting-brake control loop of the first on-load switch is off-state, and the first on-load switch 3 cannot carry out closing operation, this is two The electrical interlocks being arranged between switch are completed at this time after 9 failure of the first incoming power leads to busbar dead electricity, disconnect automatically One on-load switch 3, and by the second on-load switch of delay adjustments automatic closing 4, excision fault loop is completed, restore load power supply Process.

Claims (1)

1. a kind of ring main unit two-way inlet wire is switched fast control circuit, which is characterized in that including main control circuit and spare control Circuit, the main control circuit include level-one closing relay contact, two level closing relay contact, the first closing coil, One intermediate relay coil, the first live locking contact, first switch level-one normally-closed contact, first switch two level normally-closed contact, First switch three-level normally opened contact, first switch level Four normally-closed contact, the first closing relay coil, the first switch knob, One time relay coil, level-one intermediate relay normally-closed contact, two level intermediate relay normally-closed contact, one level temporal relay Timing closing contact, the first switching winding, the first opening button and the first intermediate relay coil;
The standby control circuit includes the second closing coil, the second intermediate relay coil, the second live locking contact, second It is normally closed tactile to switch level-one normally-closed contact, second switch two level normally-closed contact, second switch three-level normally opened contact, second switch level Four Point, the second switch knob, the second time relay coil, three-level intermediate relay normally-closed contact, level Four intermediate relay are normally closed Contact, two level time relay timing closing contact, the second closing relay coil, three-level closing relay contact, level Four are closed Lock relay contact, the second opening button and the second switching winding;
Level-one closing relay contact, the first closing coil and two level closing relay contact series, the first intermediate relay Device coil and the first live locking contact in parallel, busbar live locking contact series, second switch level-one normally-closed contact, first Time relay coil and the series connection of level-one intermediate relay normally-closed contact, first switch three-level normally opened contact, the first switching winding It connects with the first opening button, first opening button is in parallel with two level intermediate relay normally-closed contact, the second switch Two level normally-closed contact, first switch level Four normally-closed contact, the first closing relay coil and the series connection of the first switch knob, described the One switch knob and two level time relay timing closing contact shunt, three-level closing relay contact, the second closing line Circle and level Four closing relay contact series, the second intermediate relay coil and the second live locking contact series, it is described Second live locking contact and busbar live locking contact shunt, the first switch level-one normally-closed contact, the second time relay Device coil and the series connection of three-level intermediate relay normally-closed contact, the second switch three-level normally opened contact, the second switching winding and the Two opening buttons are connected, and second opening button is in parallel with level Four intermediate relay normally-closed contact, the first switch two level Normally-closed contact, second switch level Four normally-closed contact, the second closing relay coil and the series connection of the second switch knob, second, which closes a floodgate, presses Button and one level temporal relay timing closing contact shunt.
CN201820252862.7U 2018-02-12 2018-02-12 A kind of ring main unit two-way inlet wire is switched fast control circuit Active CN207835061U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820252862.7U CN207835061U (en) 2018-02-12 2018-02-12 A kind of ring main unit two-way inlet wire is switched fast control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820252862.7U CN207835061U (en) 2018-02-12 2018-02-12 A kind of ring main unit two-way inlet wire is switched fast control circuit

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Publication Number Publication Date
CN207835061U true CN207835061U (en) 2018-09-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110416018A (en) * 2019-04-29 2019-11-05 贵州电网有限责任公司 One kind keeping apart official seal short-circuit operation system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110416018A (en) * 2019-04-29 2019-11-05 贵州电网有限责任公司 One kind keeping apart official seal short-circuit operation system
CN110416018B (en) * 2019-04-29 2021-06-29 贵州电网有限责任公司 Short circuit prevention operating system for isolating switch

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