CN206099510U - Control system is hauled oneself willingly into fully to three inlet wires of low pressure, three female antithetical couplets based on PLC realizes - Google Patents
Control system is hauled oneself willingly into fully to three inlet wires of low pressure, three female antithetical couplets based on PLC realizes Download PDFInfo
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- CN206099510U CN206099510U CN201620980406.5U CN201620980406U CN206099510U CN 206099510 U CN206099510 U CN 206099510U CN 201620980406 U CN201620980406 U CN 201620980406U CN 206099510 U CN206099510 U CN 206099510U
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Abstract
The utility model relates to a control system is hauled oneself willingly into fully to three inlet wires of low pressure, three female antithetical couplets based on PLC realizes belongs to power equipment technical field. This system includes: three inlet wire voltage sample modules, three service entrance switchs sampling module, three female voltage sample module, three bus connection switch sampling module and PLC modules of allying oneself with, the input of PLC module is connected to the output of three inlet wire voltage sample modules, three service entrance switchs sampling module, the three female voltage sample of antithetical couplet modules, three bus connection switch sampling module, three service entrance switchs and three bus connection switch are controlled to the connection of PLC module output. The utility model provides an it is strong that control system is hauled oneself willingly into fully to three inlet wires of low pressure, three female antithetical couplets based on PLC realizes has the commonality, and the flexibility is good, and the wiring is simple, and the function is strong, easily expands, and the reliability is high, and the interference killing feature is strong, regularly accurate, advantages such as timing scope width to traditional relay control has progressively been replaced.
Description
Technical field
The utility model is related to a kind of mother prepared auto restart control system of three inlet wire of low pressure three realized based on PLC, belongs to electricity
Power equipment technical field.
Background technology
To ensure the reliability of power supply, power system Jing is powered frequently with the power supply of 2 or more than 2, and phase
Appropriate standby mode is taken between mutually.When working power loses voltage, stand-by power supply is put into immediately by automatics, so as to
Ensure the continuity of power supply, this automatics is referred to as automatic throw-in equipment of emergency power supply, abbreviation prepared auto restart.Traditional standby electricity
Source automatic throw-in equipment adopts various relays, contactor, switch and contact, is constituted according to the different methods of operation corresponding standby
Loop is hauled oneself willingly into, low price is characterized in but equipment volume is big, switch motion is slow, and function is less, and wiring is complicated, contact rapid wear
Bad, reconfiguration trouble, flexibility is poor.Microcomputer type automatic throw-in equipment of emergency power supply was generally used in recent years, was characterized in
There is perfect fault logic to differentiate and reliable failure response, it is easy to maintenance, but typically formula is touched using prefabricated, it is only used for allusion quotation
The inlet wire of type is hauled oneself willingly into or is segmented and hauls oneself willingly into.Development and the construction retrofit of electrical network with modern electric power industry, the scale of power system
Increasing, structure becomes increasingly complex, performance requirement more and more higher, and the logical relation of automatic throw-in equipment of emergency power supply also more becomes
It is complicated.Traditional automatic throw-in equipment of emergency power supply and microcomputer type auto-switch-on device (i.e. prefabricated touches formula) has been difficult to meet scene
Protean requirement.
The content of the invention
The utility model will solve technical problem：Overcome the shortcoming of above-mentioned technology.A kind of low pressure of highly versatile is provided
The mother prepared auto restart control system of three inlet wire three.
In order to solve above-mentioned technical problem, the utility model proposes technical scheme be：A kind of low pressure realized based on PLC
The mother prepared auto restart control system of three inlet wire three, including：Three primary voltage sampling modules, three service entrance switch sampling modules, three mothers
Voltage sample module, three bus connection switch sampling modules and PLC module；The three primary voltages sampling module, three service entrance switch are adopted
Egf block, three mother voltage sample modules, the output end of three bus connection switch sampling modules connect the input of the PLC module；
The PLC module output end connects and controls three service entrance switch and three bus connection switches.
Such scheme is further improved by：Also include switching input module and Analog input mModule；Described three
Primary voltage sampling module and three mother voltage sample modules are connected to the PLC module by the Analog input mModule；
The three service entrance switch sampling module and three bus connection switch sampling modules are connected to the PLC by the switching input module
Module.
Such scheme is further improved by：Also include switching value output module；The PLC module passes through the switch
Amount output module is connected to three service entrance switch and three bus connection switches.
The mother prepared auto restart control system of three inlet wire of low pressure three realized based on PLC that the utility model is provided, with PLC as base
Plinth, by gathering input/output voltage and on off state the power supply of input is automatically selected.Control is compared, with logical
Strong with property, flexibility is good, and wiring is simple, and by force, easily extension, reliability is high, and strong antijamming capability, timing is accurate, timing model for function
The advantages of enclosing width, so as to progressively instead of traditional Control.The standby power throw-in device being made up of PLC is relatively clever
It is living, changeable, the logical sum function of various complexity according to the method for operation of power system, can be completed, meet to greatest extent different
Field requirement.
Description of the drawings
Below in conjunction with the accompanying drawings the utility model is described in further detail.
Fig. 1 is a preferred embodiment electrical block diagram of the utility model embodiment.
Specific embodiment
Embodiment
The mother prepared auto restart control system of three inlet wire of low pressure three realized based on PLC of the present embodiment, as shown in figure 1, including：
Three primary voltage sampling modules, three service entrance switch sampling modules, three mother voltage sample modules, three bus connection switch sampling modules and
PLC module；Three primary voltage sampling modules, three service entrance switch sampling modules, three mother voltage sample modules, three bus connection switches are adopted
The output end of egf block connects the input of PLC module；PLC module output end connects and controls three service entrance switch and three mothers are opened
Close；Also include switching input module and Analog input mModule；Three primary voltage sampling modules and three mother voltage sample moulds
Block is connected to PLC module by Analog input mModule；Three service entrance switch sampling modules and three bus connection switch sampling modules pass through
Switching input module is connected to PLC module；Also include switching value output module；PLC module is connected by switching value output module
It is connected to three service entrance switch and three bus connection switches.
As shown in fig. 1, the present embodiment is applied to 0.4kV system main electrical schemes, wherein II section of bus is important load.System
Service requirement：1. during the normal operation of 1#, 2#, 3# inlet wire, three inlet wires are each with one section of load;If 2. 1# inlet wires have a power failure, 2#,
3# inlet wires normally run, then 3# inlet wires are by the I section of load of QF6 bands;If 3. 3# inlet wires have a power failure, 1#, 2# inlet wire normally runs, then
1# inlet wires are by the III section of load of QF6 bands;If 4. 2# inlet wires have a power failure, 1#, 3# inlet wire normally runs, then 1# inlet wires pass through QF4 bands
II section of load;If 5. 1#, 2# inlet wire has a power failure, 3# inlet wires normally run, then 3# inlet wires are by the II section of load of QF5 bands;If 6. 2#,
3# inlet wires have a power failure, and 1# inlet wires normally run, then 1# inlet wires are by the II section of load of QF4 bands;7. prepared auto restart is moved in the case of the above is several
After work, if inlet wire recovers power transmission, bus connection switch is disconnected, return to normal operating condition.
When system is normally run, three inlet wires are each with one section of load.According to service requirement, after every incoming power dead electricity
Prepared auto restart situation make analysis：
(1) if 1# inlet wires have a power failure, 3# mothers are closed when 2#, 3# inlet wire normally runs;When 1# inlet wires recover, point 3# mothers,
1# inlet wires are closed, normal operating condition is returned to.
Course of action is：When 1# inlet wire decompressions are detected, prepared auto restart protection starts jumps 1# inlet wires, after confirming tripping, closes 3#
Mother.Afterwards when detecting 1# primary voltages and being normal, 3# mothers are jumped, confirm to close 1# inlet wires after tripping.
Prepared auto restart charge condition：Prepared auto restart is allowed, 3# mothers have pressure, 3# to enter in a point position, 1# inlet wires in conjunction position, I section of bus
After line has pressure, condition to possess, Jing 20s prepared auto restart charging completes.
Prepared auto restart operation condition：Prepared auto restart charging complete, 1# inlet wire dead electricity (TVj1, TVm1 are without pressure).
Runback charge condition：3# mothers have pressure, 3# inlet wires to have pressure, 1# inlet wires in conjunction position, 1# inlet wires in a point position, I section of bus
After having pressure, condition to possess, runback charging complete after the time is set.
Runback operation condition：Runback charging complete.
The utility model is not limited to the concrete technical scheme described in above-described embodiment, in addition to the implementation, this practicality
It is new to have other embodiment.The technical scheme that all employing equivalents are formed, is the guarantor of the utility model requirement
Shield scope.
Claims (3)
1. it is a kind of based on PLC realize the mother prepared auto restart control system of three inlet wire of low pressure three, it is characterised in that include：Three inlet wires
Voltage sample module, three service entrance switch sampling modules, three mother voltage sample modules, three bus connection switch sampling modules and PLC moulds
Block；The three primary voltages sampling module, three service entrance switch sampling modules, three mother voltage sample modules, three bus connection switches are adopted
The output end of egf block connects the input of the PLC module；The PLC module output end connect and control three service entrance switch and
Three bus connection switches.
2. the mother prepared auto restart control system of three inlet wire of low pressure three realized based on PLC according to claim 1, its feature exists
In：Also include switching input module and Analog input mModule；The three primary voltages sampling module and three mother voltages are adopted
Egf block is connected to the PLC module by the Analog input mModule；The three service entrance switch sampling module and three mothers
Switch sampling module is connected to the PLC module by the switching input module.
3. the mother prepared auto restart control system of three inlet wire of low pressure three realized based on PLC according to claim 1, its feature exists
In：Also include switching value output module；The PLC module is connected to three service entrance switch by the switching value output module
With three bus connection switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620980406.5U CN206099510U (en) | 2016-08-30 | 2016-08-30 | Control system is hauled oneself willingly into fully to three inlet wires of low pressure, three female antithetical couplets based on PLC realizes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620980406.5U CN206099510U (en) | 2016-08-30 | 2016-08-30 | Control system is hauled oneself willingly into fully to three inlet wires of low pressure, three female antithetical couplets based on PLC realizes |
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| Publication Number | Publication Date |
|---|---|
| CN206099510U true CN206099510U (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620980406.5U Active CN206099510U (en) | 2016-08-30 | 2016-08-30 | Control system is hauled oneself willingly into fully to three inlet wires of low pressure, three female antithetical couplets based on PLC realizes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300639A (en) * | 2016-08-30 | 2017-01-04 | 江苏华强电力设备有限公司 | A kind of low pressure three inlet wire three mother prepared auto restart control system realized based on PLC |
-
2016
- 2016-08-30 CN CN201620980406.5U patent/CN206099510U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300639A (en) * | 2016-08-30 | 2017-01-04 | 江苏华强电力设备有限公司 | A kind of low pressure three inlet wire three mother prepared auto restart control system realized based on PLC |
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