CN208420975U - Dual power supply switching equipment testing auxiliary device - Google Patents
Dual power supply switching equipment testing auxiliary device Download PDFInfo
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- CN208420975U CN208420975U CN201820926549.7U CN201820926549U CN208420975U CN 208420975 U CN208420975 U CN 208420975U CN 201820926549 U CN201820926549 U CN 201820926549U CN 208420975 U CN208420975 U CN 208420975U
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Abstract
The utility model discloses a kind of dual power supply switching equipment testing auxiliary devices, including the off-line test platform built by PLC, button, switch, indicator light, power supply, button is connected with PLC input terminal, to PLC input switch amount, PLC output end is connected with indicator light and switch, according to the digital output modul of input switch and LED status, to export switching value to the dual power supply switching equipment, and the state of switch is indicated simultaneously.The utility model is able to achieve the off-line test to BZT, fast switching device etc., testing crew is during debugging BZT, fast switching device, utilize the utility model dual power supply switching equipment, it can replace the primary equipments such as inlet wire of substation, bus connection switch cabinet, it avoids in electric substation and stops power transmission operation, improve the power supply reliability of power supply system, the operating risk of power switching arrangement on-line testing is reduced simultaneously, is avoided during debugging because of substation's mistakenly stop risk caused by equipment inner parameter, logic, function setting mistake.
Description
Technical field
The utility model relates to dual power supply switching equipment detection technique fields.
Background technique
Chemical company belongs to inflammable and explosive manufacturing enterprise, very high to the continuity requirement of production, even of short duration stops
Electricity can all cause device to stop in emergency halt production, cause heavy losses.Simultaneously as Maoming is in the extension of Lezhou Peninsula lightning stroke
Area, power grid are often subject to be struck by lightning, and cause voltage fluctuation or power outage.In order to ensure the continuity and safety of production, at us
The power supply system of 19 process units electric substations under electric shop administration, all uses dual power supply, and in 6KV, 380V
It is assembled with the automatic throw-in equipment of emergency power supply (hereinafter referred BZT) for dual power supply switching in two-stage distribution system or fastly cuts
Device.By taking BZT as an example, the effect of BZT is to close mother cabinet automatically when wherein power supply caused by shaking the reasons such as electricity because having a power failure all the way
Switch is come the switching of another way power supply, is restored the power supply of power failure part with most fast speed, to guarantee the continuity of production.
Since BZT plays very crucial effect in safety in production, by equipment management relevant regulations, it would be desirable to periodically to these
Equipment detection.The detection of the BZT of electric substation at present needs the cooperation of electric power incoming line cabinet and mother cabinet (or backup power source cabinet), institute
To need process units to stop, this just affects the normal power supply of electric substation, reduces the reliability of power supply system.If BZT
It makes a fault in detection process, also will cause the major accident of electric substation's power failure.
Fig. 1 is the primary connection figure of electric substation.As shown in Figure 1, inlet wire 1 passes through breaker 1DL (belonging to electric power incoming line cabinet)
It is connected with 1 section of bus, inlet wire 2 is connected by breaker 2DL (belonging to electric power incoming line cabinet) with 2 sections of buses, and 3DL is bus connection switch
(belonging to mother cabinet).BZT is respectively connected with 1DL, 2DL, 3DL, is acquired their switch state and is controlled their separating brakes, closes a floodgate,
To realize the purpose of fast recovery of power supply.1# power supply, the 2# power supply of above-mentioned inlet wire 1,2 quite below.
Utility model content
By reference to power supply system schematic diagram and BZT, fast switching device schematic diagram, determine testing auxiliary device must have as
Lower function:
1) energy analog power (inlet wire), bus connection switch divide manually, close；
2) division can be controlled by outside；
It 3) can simulated dual power switching arrangement failure locking；
It 4) can analog switch tripping；
5) there is clearly state instruction；
6) small in size, easy to carry, wiring is simple, reliable in action.
The goal of the invention of the utility model is to provide a kind of dual power supply switching equipment test auxiliary dress for meeting above-mentioned requirements
It sets.
The goal of the invention of the utility model is achieved through the following technical solutions: a kind of dual power supply switching equipment test auxiliary dress
Set, including control box, further include be mounted in control box according to electric substation's mode of connection or surface, for simulating dual power supply
The electrical component of the primary connection mode of system, the electrical component include DC power supply and PLC, the DC power supply with it is described
The power port of PLC is connected, and powers for PLC, and the PLC has multiple input ports and multiple output ports, goes back on the PLC
A high potential port and a low potential port are formed, the electrical component further includes for analog power, bus connection switch hand
Dynamic point, power supply 1# power switch hand trip(ping) button, the 1# power switch closing by hand button, 2# power switch hand trip(ping) closed
Button, 2# power switch closing by hand button, bus connection switch hand trip(ping) button, bus connection switch closing by hand button, in outside
The electronic trip button of 1# power switch, the electronic trip button of 2# power switch, bus connection switch electric switch-on for controlling lower division are pressed
Button, 1# power protection Action Button, 2# power protection Action Button for simulated dual power switching arrangement failure locking, is used for
The locking cut-off push and failure reset button of analog switch tripping, their one end are separately connected an input of the PLC
Port, the other end connects the low potential point of the PLC, while the electrical component further includes 1# power switch, 2# power supply
Switch, bus connection switch, 1# power protection latch switch, 2# power protection latch switch, indicating fault switch, these switches all have
There are main circuit and the control circuit for controlling the main circuit on-off, one end of the control circuit of these switches is separately connected institute
An output port of PLC is stated, the other end connects the high potential point of the PLC, and the electrical component further includes that state refers to
Show lamp, the main circuit that the 1# power switch, 2# power switch, bus connection switch, indicating fault switch is connected respectively goes up the shape
After state indicator light, all it is connected with the positive and negative output end of the DC power supply, the 1# power switch, 2# power switch, mother are opened
It closes, 1# power protection latch switch, 2# power protection latch switch are all provided with stateful contact, so that its switch state to be output to
The dual power supply switching equipment.
The button is all Self-resetting button, is conducive to simplify the decision logic formula inside PLC.
The method tested using the testing auxiliary device the dual power supply switching equipment, including switch failure are surveyed
Try is rapid, the switch failure testing procedure are as follows: presses locking cut-off push, 1# power switch, 2# power switch, mother are opened
Off status is lockable, though 1# power switch, 2# power switch, bus connection switch be not responding to the electronic tripping of 1# power switch by
The variation of button, the electronic trip button of 2# power switch, bus connection switch electric switch-on button folding condition.
The method also includes dual power supply switching equipment failure locking testing procedure, the dual power supply switching equipment failure is closed
Lock testing procedure:
Press 1# power switch closing by hand button, 1# power switch movement closure, then press the movement of 1# power protection by
Button, the release of 1# power switch disconnect, and 1# power protection latch switch movement closure, output block signal switches to the dual power supply
Equipment；
Press 2# power switch closing by hand button, 2# power switch movement closure, then press the movement of 2# power protection by
Button, the release of 2# power switch disconnect, and 2# power protection latch switch movement closure, output block signal switches to the dual power supply
Equipment.
The method also includes failure reset step, the failure reset step are as follows: press failure reset button, discharge 1#
Power protection latch switch or 2# power protection latch switch and disconnect.
Compared with the prior art, the utility model has the following beneficial effects:
1) the utility model testing auxiliary device is able to achieve the off-line test to BZT, fast switching device etc., and testing crew is being adjusted
During trying BZT, fast switching device, using the utility model dual power supply switching equipment, inlet wire of substation, bus connection switch cabinet etc. can be replaced
Primary equipment avoids in electric substation and stops power transmission operation, improves the power supply reliability of power supply system, while reducing power supply
The operating risk of switching equipment on-line testing, caused by mistake is set because of equipment inner parameter, logic, function during avoiding debugging
Substation's mistakenly stop risk, according to work condition risk analysis method (LEC), operation " risk " score value is by original 240
80 are reduced to, acceptable risk area is in；In addition, the utility model energy analog power (inlet wire), bus connection switch divide manually, close,
Outside control division, dual power supply switching equipment failure locking, the various situations such as switch failure can be split to dual power supply switching equipment
The response logic for entering amount is comprehensively tested, and the utility model clearly indicates the shape of switch by status indicator lamp
State variation, keeps test process more intuitive,；The utility model also has small in size, and easy to carry, wiring is simple, reliable in action
The advantages of.
2) the utility model can improve testing efficiency: using dual power supply switching equipment testing auxiliary device, reduce test
Period needs the preparations such as application power failure, grid switching operation, saves a large amount of time, optimizes experiment work process, into
And testing efficiency is improved, it is reduced to its time-consuming 2 hours by original 8 hours；
3) the utility model is using PLC as output logical device, compared to the series-parallel reality for using common contact device
Existing circuit, component quantity consumed is few, and installation wiring is also few, long service life, and self-diagnostic function is strong.
Detailed description of the invention
Fig. 1 is the primary connection figure of electric substation；
Fig. 2 is the design schematic diagram of the utility model dual power supply switching equipment testing auxiliary device.
Specific embodiment
As shown in Fig. 2, the BZT testing auxiliary device in the present embodiment is on control box including cube shaped control box
In control box or surface is mounted on according to electric substation's mode of connection, primary connection mode for simulating dual power supply system
Electrical component.It mainly include DC power supply, PLC, button, contactor and status indicator lamp in the present embodiment.
As shown in Fig. 2, the AC220V of input is converted to power port M+, M- that 24DC is output to PLC by DC power supply, from
And it is PLC power supply.PLC has multiple input port I0.0~1.4 and multiple output port Q0.0~0.5.One is also formed on PLC
A high potential port, is connected and a low potential port with M+, is connected with M-.
Button includes the power supply 1# power switch hand trip(ping) button for dividing manually for analog power, bus connection switch, closing
SB1,1# power switch closing by hand button SB2,2# power switch hand trip(ping) button SB3,2# power switch closing by hand are pressed
Button SB4, bus connection switch hand trip(ping) button SB5, bus connection switch closing by hand button SB6 also control lower point outside is included in
The electronic trip button B3 of electronic trip button B1, the 2# power switch of the 1# power switch of conjunction, bus connection switch electric switch-on button B5,
And 1# power protection Action Button B2,2# power protection Action Button for simulated dual power switching arrangement failure locking
B4, locking cut-off push B6 and failure reset button B7 for analog switch tripping.These buttons are Self-resetting button,
Be conducive to simplify the decision logic formula inside PLC.Their one end are separately connected the input port I0.0~1.4 (corresponding relationship of PLC
Referring to fig. 2), the low potential point of other end connection PLC.
Contactor includes 1# power switch DL1,2# power switch DL2, bus connection switch DL3,1# power protection latch switch
K1,2# power protection latch switch K2, indicating fault switch K3.These switches all have main circuit and lead to for controlling main circuit
One end of disconnected control circuit, the control circuit of these switches is separately connected the output port Q0.0~0.5 (corresponding relationship of PLC
Referring to fig. 2), the high potential point of other end connection PLC.And these switches have more than one pair of output contact, to control
While status indicator lamp processed, output switching value to BZT.
As described in Figure 2, the main circuit of 1# power switch DL1 has 3 docking points, and a pair of normally closed two pairs normally opened, a pair of normal
Close contact and a pair of of normal opened contact pass through respectively green state indicator light L2 and red status indicator light L1 and DC power supply just,
Negative output terminal is connected, between contact S0 and S1 of remaining a pair of the normal opened contact as state contact access BZT.2# power switch
DL2, the connection of bus connection switch DL3 state contact are similar with 1# power switch DL1, referring specifically to Fig. 2.The major loop of K1, K2 are made
It is respectively connected between the S4 and S0, S5 and S0 of PLC for normally open contact.After the major loop of K3 is connected with yellow indicator lamp L7,
It is in parallel with the positive and negative output end of DC power supply again.
The electronic trip button B3 of electronic trip button B1, the 2# power switch of 1# power switch, bus connection switch electric switch-on are pressed
The both ends of button B5 are respectively connected between contact S6 and S7, S8 and S9, S10 and the S11 of BZT.
Above-mentioned button, the contact of status indicator lamp and contactor and electronic trip button B1, the 2# power switch of # power switch
Electronic trip button B3, bus connection switch electric switch-on button B5 contact be all disposed on the positive operation panel of control box.
It is below the allocation table of I/O in Fig. 2.
The allocation table of I/O
The utility model is tested as follows
The utility model testing auxiliary device design principle is simple, easy to make, in kind small in size, is convenient for carrying, function
It is practical.Scene use is easy to operate, shortens power off time, significantly improves the working efficiency of tester, reduces test
Personnel on site's operating risk and labor intensity.
Claims (2)
1. a kind of dual power supply switching equipment testing auxiliary device, including control box further include being installed according to electric substation's mode of connection
In control box or the electrical component on surface, primary connection mode for simulating dual power supply system, which is characterized in that institute
Stating electrical component includes DC power supply and PLC, and the DC power supply is connected with the power port of the PLC, is powered for PLC, institute
Stating PLC has multiple input ports and multiple output ports, also forms a high potential port and a low potential on the PLC
Port, the electrical component further include the power supply 1# power switch hand trip(ping) for dividing manually for analog power, bus connection switch, closing
Button, 1# power switch closing by hand button, 2# power switch hand trip(ping) button, 2# power switch closing by hand button, mother
Join switch manual trip button, bus connection switch closing by hand button, the electronic tripping of 1# power switch of division under external control
Button, the electronic trip button of 2# power switch, bus connection switch electric switch-on button, are closed for simulated dual power switching arrangement failure
1# power protection Action Button, the 2# power protection Action Button of lock, for the locking cut-off push of analog switch tripping, and
Failure reset button, their one end are separately connected an input port of the PLC, and the other end connects the described low of the PLC
Potential point, while the electrical component further includes 1# power switch, 2# power switch, bus connection switch, the locking of 1# power protection is opened
It closes, 2# power protection latch switch, indicating fault switch, these switches all have main circuit and lead to for controlling the main circuit
Disconnected control circuit, one end of the control circuit of these switches are separately connected an output port of the PLC, other end connection
The high potential point of the PLC, the electrical component further includes status indicator lamp, the 1# power switch, 2# power switch,
Bus connection switch, indicating fault switch main circuit connect respectively go up the status indicator lamp after, all with the DC power supply just,
Negative output terminal is connected, the 1# power switch, 2# power switch, bus connection switch, 1# power protection latch switch, 2# power protection
Latch switch is all provided with stateful contact, so that its switch state is output to the dual power supply switching equipment.
2. dual power supply switching equipment testing auxiliary device according to claim 1, which is characterized in that the button is all certainly
Reset button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820926549.7U CN208420975U (en) | 2018-06-15 | 2018-06-15 | Dual power supply switching equipment testing auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820926549.7U CN208420975U (en) | 2018-06-15 | 2018-06-15 | Dual power supply switching equipment testing auxiliary device |
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| Publication Number | Publication Date |
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| CN208420975U true CN208420975U (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820926549.7U Active CN208420975U (en) | 2018-06-15 | 2018-06-15 | Dual power supply switching equipment testing auxiliary device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110364996A (en) * | 2019-07-24 | 2019-10-22 | 国家电网有限公司 | A Protection Device for Improving the Reliability of Power Supply for Plants |
-
2018
- 2018-06-15 CN CN201820926549.7U patent/CN208420975U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110364996A (en) * | 2019-07-24 | 2019-10-22 | 国家电网有限公司 | A Protection Device for Improving the Reliability of Power Supply for Plants |
| CN110364996B (en) * | 2019-07-24 | 2021-08-20 | 国家电网有限公司 | Protection device for improving reliability of power supply |
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