CN109390911A - Low-temperature protection remote power-off control system and control method for uninterruptible power supply - Google Patents
Low-temperature protection remote power-off control system and control method for uninterruptible power supply Download PDFInfo
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- CN109390911A CN109390911A CN201811633355.9A CN201811633355A CN109390911A CN 109390911 A CN109390911 A CN 109390911A CN 201811633355 A CN201811633355 A CN 201811633355A CN 109390911 A CN109390911 A CN 109390911A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
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Abstract
The present invention provides a kind of low-temperature protection remote power-off control systems and control method for uninterruptible power supply, it passes through power supply control branch, remote power-off enables branch, shutdown triggering branch, low-temperature protection controlling brancher and low-temperature protection enable the circuit structure design of branch, uninterruptible power supply can effectively be controlled, remote power-off is executed by master controller triggering control in the case where environment temperature is lower than default protection temperature, and master controller is driven to shut down, and uninterruptible power supply can also be controlled and reach default power-off duration in mains supply power-off, or uninterruptible power supply executes remote power-off in the case that electricity is less than default electricity limit value under mains supply off-position, reduce uninterruptible power supply i.e. master controller long-play in the case where crossing low-temperature environment, uninterruptible power supply causes the risk of damage because of its internal battery deep discharge, It realizes and provides low-temperature protection control and over-discharge protection control to uninterruptible power supply in Wind turbines and main operation controller.
Description
Technical field
The present invention relates to Control Technology of Wind Power Generation System field, in particular to a kind of low temperature for uninterruptible power supply is protected
Protect remote power-off control system.
Background technique
As wind generating technology reaches its maturity, wind power generating set (often referred to simply as Wind turbines) China much
Qu Douyou is widely arranged and is run.And in the area of Different climate, the environment that Wind turbines are faced also can be different, different
Temperature and humidity environment all can cause Different Effects to the normal operation of Wind turbines, wherein lower temperature easily damages Wind turbines
Control system.
The control system of Wind turbines mainly includes control cabinet, cabin cabinet, variable pitch cabinet, converter cabinet etc., is commonly referred to collectively as controlled
Cabinet processed, main component are electrical, microelectronics and power electronic element, to the more demanding of temperature and service condition.For example, control
Uninterruptible power supply (Uninterruptible Power Supply, referred to as UPS) in cabinet processed passes through 230VAC alternating current electricity
Source obtain it is electric, be converted to 24VDC DC power supply to as load electronic component provide power supply, not only can operate normally when guarantee
The load-carrying power quality of institute can also be such that wind power generating set smoothly shuts down and save data when alternating current powers off；In addition, when electricity
When there is low voltage crossing in net, UPS can umklappen be battery operated mode, using by its internal cell be institute's bringing onto load confession
Electricity, to guarantee that institute's bringing onto load passes through low voltage crossing time-bands.Therefore, the stability pair of uninterruptible power supply UPS operation
It is particularly important for wind power generating set.However, if because the reasons such as mains power fails, maintenance power off, uninterruptible power supply
UPS can be changed into battery operated mode, to be powered by its internal cell as institute's bringing onto load, but if alternating current power-off time mistake
In the case that long, uninterruptible power supply UPS electric quantity consumption causes remaining capacity too low, continues powered operation and be then likely to result in
The internal battery deep discharge of UPS and cause to damage, adverse effect is also resulted in for the operation stability of UPS.
In another example the core controller of control cabinet is usually PLC controller, powered by uninterruptible power supply UPS, but logical
The minimum operating temperature of normal PLC controller requires to be -30 DEG C ~ -20 DEG C, in the low temperature environment required lower than its minimum operating temperature
The long-play of lower PLC controller then be easy to cause the damage of PLC system, or even Wind turbines is caused to shut down, and then influences
The generated energy and working efficiency of Wind turbines.
Therefore, design provides the measure of low-temperature protection control for a kind of operation of Wind turbines, for Wind turbines
Stable operation and the working efficiency for improving Wind turbines all have great importance.
Summary of the invention
Aiming at the above shortcomings existing in the prior art, the purpose of the present invention is to provide a kind of for uninterruptible power supply
Low-temperature protection remote power-off control system provides low-temperature protection control to the operation to uninterruptible power supply in Wind turbines.
To achieve the above object, the technical solution adopted by the present invention is that:
For the low-temperature protection remote power-off control system of uninterruptible power supply, including be connected in parallel on mains supply the first power end and
Mains-supplied branch between second source end, for powering for uninterruptible power supply；The uninterruptible power supply for electricity output
High-voltage end and low-pressure end are connected to the master controller of Wind turbines, for powering for main controller power source；
It further include the power supply control branch being connected in parallel between the first power end of mains supply and second source end, it is described for automatically controlled
Branch processed includes the first switch portion in the Electromagnetic Control portion of concatenated multiconductor electromagentic switching apparatus, multiconductor electromagentic switching apparatus
Institute is connected on the second switch portion in the first switch portion of the second multiconductor electromagentic switching apparatus, and multiconductor electromagentic switching apparatus
It states in mains-supplied branch；The first switch portion and second switch portion of multiconductor electromagentic switching apparatus are in multiconductor electromagnetic switch
The Electromagnetic Control portion of device obtain it is electric after be closed conducting；
Further include be connected to master controller remote power-off enable signal output end and uninterruptible power supply for electricity output low-pressure end
Between remote power-off enable branch, the remote power-off enables branch road and is connected with the Electromagnetic Control of the first electromagentic switching apparatus
Portion；The remote power-off enable signal output end of the master controller exports low level in master controller shutdown or start-up course,
High level is exported after master controller starts successfully；
It further include being connected to uninterruptible power supply for the shutdown between the high-voltage end of electricity output and the shutdown control terminal of uninterruptible power supply
Branch is triggered, the shutdown triggering branch includes the switch portion and multiconductor electromagnetic switch dress of concatenated first electromagentic switching apparatus
The third switch portion set；The Electromagnetic Control portion of first electromagentic switching apparatus obtain it is electric after, switch portion is switched to by normal closure state
It disconnects；The Electromagnetic Control portion of multiconductor electromagentic switching apparatus obtain it is electric after, third switch portion is switched to disconnection by normal closure state；
When the shutdown control terminal of the uninterruptible power supply obtains electric, uninterruptible power supply starts to execute power-off operation；
The switch portion of the second electromagentic switching apparatus is also in series in the power supply line that the uninterruptible power supply is powered to master controller；
The uninterruptible power supply is described low for being also parallel with low-temperature protection controlling brancher between the high-voltage end and low-pressure end of electricity output
Temperature protection controlling brancher includes Electromagnetic Control portion and the second multiconductor electromagentic switching apparatus of concatenated second electromagentic switching apparatus
Second switch portion；The Electromagnetic Control portion of second electromagentic switching apparatus obtain it is electric after, switch portion closure conducting；
Further include be connected to master controller low-temperature protection enable signal output end and uninterruptible power supply for electricity output low-pressure end
Between low-temperature protection enable branch, the low-temperature protection enables branch road and is connected with the electricity of the second multiconductor electromagentic switching apparatus
Magnetic control portion；The low-temperature protection enable signal output end of the master controller is exported when environment temperature is lower than default protection temperature
Otherwise high level exports low level；The Electromagnetic Control portion of the second multiconductor electromagentic switching apparatus obtain it is electric after, first switch
Portion and second switch, which are closed, is switched to disconnection by normal closure state；
The default protection temperature is lower than the cold-starting temperature of uninterruptible power supply.
In the above-mentioned low-temperature protection remote power-off control system for uninterruptible power supply, preferably, the master controller
It is acquired by low-temperature protection sensor and obtains environment temperature, it is low in environment temperature to control its low-temperature protection enable signal output end
High level is exported when default protection temperature.
In the above-mentioned low-temperature protection remote power-off control system for uninterruptible power supply, preferably, the default protection
Temperature is -30 DEG C ~ -20 DEG C.
In the above-mentioned low-temperature protection remote power-off control system for uninterruptible power supply, preferably, the master controller
Remote power-off enable signal output end also reach default power-off duration or uninterruptible power supply in alternating current electricity in mains supply power-off
Low level is exported when electricity is less than default electricity limit value under the off-position of source.
In the above-mentioned low-temperature protection remote power-off control system for uninterruptible power supply, preferably, the default power-off
Shi Changwei 2 hours.
In the above-mentioned low-temperature protection remote power-off control system for uninterruptible power supply, preferably, the default electricity
Limit value is the 10% ~ 20% of uninterruptible power supply specified electric quantity.
In the above-mentioned low-temperature protection remote power-off control system for uninterruptible power supply, preferably, further including being connected in parallel on
Temperature control branch and starting triggering branch between the first power end and second source end of mains supply；
The temperature control branch includes the Electromagnetic Control portion of concatenated temperature detect switch (TDS), single-pole double throw electromagentic switching apparatus, the temperature control
Switch switched conductive temperature control branch when environment temperature is greater than or equal to default start-up temperature；
The starting triggering branch includes the delay electromagnetic switch dress being connected in parallel between first power end and second source end
The Electromagnetic Control portion set, and the delay triggering end in the electromagentic switching apparatus Electromagnetic Control portion that is delayed is connected to single-pole double throw electromagnetic switch
The first switch terminal of the second switch terminal of device, single-pole double throw electromagentic switching apparatus is connected to the first power supply of mains supply
The third switch terminal at end, single-pole double throw electromagentic switching apparatus is connected to by the switch portion for the electromagentic switching apparatus that is delayed for automatically controlled
In branch processed between the Electromagnetic Control portion of multiconductor electromagentic switching apparatus and the first switch portion of multiconductor electromagentic switching apparatus, and
The Electromagnetic Control portion of multiconductor electromagentic switching apparatus is far from the first switch of multiconductor electromagentic switching apparatus in power supply control branch
One terminal in portion is connected to the second source end of mains supply；The Electromagnetic Control portion power loss of single-pole double throw electromagentic switching apparatus
When, first switch terminal is connected with second switch terminal, when the Electromagnetic Control portion of single-pole double throw electromagentic switching apparatus obtains electric,
First switch terminal is connected with third switch terminal；The delay triggering end in Electromagnetic Control portion of the delay electromagentic switching apparatus is
When obtaining electricity condition, switch portion remains closed on state, when the delay triggering in the Electromagnetic Control portion of delay electromagentic switching apparatus
End from electricity condition variation be power failure state when, the switch portion for the electromagentic switching apparatus that is delayed disconnects immediately and when by default being delayed
Between after re-close conducting.
In the above-mentioned low-temperature protection remote power-off control system for uninterruptible power supply, preferably, the temperature detect switch (TDS)
Default start-up temperature be set as 5 DEG C.
In the above-mentioned low-temperature protection remote power-off control system for uninterruptible power supply, preferably, the delay electromagnetism
The default delay time of switching device is 10 ~ 20 seconds.
Correspondingly, the present invention also provides a kind of low-temperature protection remote power-off control methods for uninterruptible power supply；For
This, present invention employs the following technical solutions:
For the low-temperature protection remote power-off control method of uninterruptible power supply, using the above-mentioned low-temperature protection for uninterruptible power supply
Remote power-off control system is controlled, control method specifically:
It is main when environment temperature is equal to or higher than default protection temperature during normal work after uninterruptible power supply starting
The low-temperature protection enable signal output end of controller exports low level, and the Electromagnetic Control portion of the second multiconductor electromagentic switching apparatus is lost
Electricity, electromagnetism is opened in the first switch portion of the second multiconductor electromagentic switching apparatus and low-temperature protection controlling brancher in power supply control branch
The second switch for closing device keeps normal closure state, the Electromagnetic Control of the second electromagentic switching apparatus in low-temperature protection controlling brancher
Portion obtain it is electric so that the switch portion of the second electromagentic switching apparatus is held on the supply lines that uninterruptible power supply is powered to master controller
Road, master controller are able to normal power supply work；Also, in the case where mains supply keeps powering, so that power supply control branch
Must be electric, the Electromagnetic Control portion of multiconductor electromagentic switching apparatus is kept as electricity condition, and multiconductor electromagnetism is opened in shutdown triggering branch
The third switch portion for closing device is also off-state, while the remote power-off enable signal output end output of master controller is high electric
Flat, the Electromagnetic Control portion of the first electromagentic switching apparatus obtains electric, the switch portion of the first electromagentic switching apparatus in shutdown triggering branch
For off-state so that the shutdown control terminal of uninterruptible power supply be in not electricity condition；
When environment temperature is lower than default protection temperature, the low-temperature protection enable signal output end of master controller exports high level,
The Electromagnetic Control portion of second multiconductor electromagentic switching apparatus obtain it is electric so that in power supply control branch the second multiconductor electromagnetic switch fill
The second switch of electromagentic switching apparatus is switched to off-state in the first switch portion set and low-temperature protection controlling brancher；Second
The first switch portion of multiconductor electromagentic switching apparatus disconnects the electromagnetism for leading to multiconductor electromagentic switching apparatus in power supply control branch
Control unit power loss, the third switch portion that shutdown triggers multiconductor electromagentic switching apparatus in branch are switched to normal closure state, meanwhile,
The second switch of electromagentic switching apparatus disconnects the Electromagnetic Control portion for leading to the second electromagentic switching apparatus in low-temperature protection controlling brancher
Power loss, so that the switch portion of the second electromagentic switching apparatus disconnects the power supply line that uninterruptible power supply is powered to master controller, master control
Device power down shutdown processed, the low-temperature protection enable signal output end and remote power-off enable signal output end for leading to master controller are because closing
Machine power down and export as low level；The output of remote power-off enable signal output end is that low level makes the first electromagentic switching apparatus
Electromagnetic Control portion power loss so that the switch portion of the first electromagentic switching apparatus is also switched to normally closed conjunction in shutdown triggering branch
State, so that uninterruptible power supply is for forming access between the high-voltage end of electricity output and the shutdown control terminal of uninterruptible power supply, not between
The shutdown control terminal in power-off source obtain it is electric, start execute power-off operation；Meanwhile the output of low-temperature protection enable signal output end is low electricity
The Electromagnetic Control portion power loss so that the second multiconductor electromagentic switching apparatus is equalled, so that the second multiconductor in power supply control branch
The second switch of electromagentic switching apparatus reverts to often again in the first switch portion of electromagentic switching apparatus and low-temperature protection controlling brancher
Closed state, in this moment, uninterruptible power supply power-off operation is not yet completed, therefore uninterruptible power supply is still defeated in execution power supply
Out, therefore in low-temperature protection controlling brancher the Electromagnetic Control portion of the second electromagentic switching apparatus again it is electric so that the second electromagnetism is opened
The switch portion for closing device is connected the power supply line that uninterruptible power supply is powered to master controller herein, master controller again electric lay equal stress on
New starting；Duration needed for the start-up course of master controller is greater than the duration that uninterruptible power supply completes power-off operation, in master controller
Start-up course in, the remote power-off enable signal output end of master controller still exports low level, therefore the first electromagnetic switch
The Electromagnetic Control portion of device keeps power failure state so that shutdown triggering branch in the first electromagentic switching apparatus switch portion after
Normal closure state is held in continuation of insurance；Meanwhile the first switch portion disconnection of the second multiconductor electromagentic switching apparatus leads to power supply control before this
In branch after the Electromagnetic Control portion power loss of multiconductor electromagentic switching apparatus, the Electromagnetic Control portion of multiconductor electromagentic switching apparatus is because of nothing
Method again it is electric and continue keep power failure state so that shutdown triggering branch in multiconductor electromagentic switching apparatus third switch portion
Continue to keep normal closure state, so that uninterruptible power supply is between the high-voltage end of electricity output and the shutdown control terminal of uninterruptible power supply
Continue keep access, the shutdown control terminal of uninterruptible power supply persistently it is electric so that uninterruptible power supply maintain execution power-off operation, directly
It completes to shut down to uninterruptible power supply；Stop powering to master controller after uninterruptible power supply shutdown, master controller power down shutdown, thus
Realize the low-temperature protection shutdown control of uninterruptible power supply and master controller.
Compared with the prior art, the invention has the following advantages:
1, the low-temperature protection remote power-off control system and control method for uninterruptible power supply of the invention, can effectively control
Uninterruptible power supply triggers control by master controller in the case where environment temperature is lower than default protection temperature and executes remote power-off, and
Drive master controller shutdown, reduce uninterruptible power supply i.e. master controller cross low-temperature environment under long-play and cause to damage
The risk of wound realizes and provides low-temperature protection control to uninterruptible power supply in Wind turbines and main operation controller.
2, the low-temperature protection remote power-off control system and control method for uninterruptible power supply of the invention, additionally it is possible to have
Effect control uninterruptible power supply reaches default power-off duration or uninterruptible power supply in mains supply power-off and powers off shape in mains supply
Electricity executes remote power-off in the case where being less than default electricity limit value under state, reduces uninterruptible power supply because its internal battery depth is put
Risk that is electric and causing damage, realizes and protects control to the over-discharge of uninterruptible power supply.
Detailed description of the invention
Fig. 1 is circuit structure of the present invention for the low-temperature protection remote power-off control system embodiment one of uninterruptible power supply
Figure.
Fig. 2 is circuit structure of the present invention for the low-temperature protection remote power-off control system embodiment three of uninterruptible power supply
Figure.
Drawing reference numeral explanation:
UPS is uninterruptible power supply；
B1 is temperature detect switch (TDS)；01-02 is the switch portion of temperature detect switch (TDS) B1；
K1 is multiconductor electromagentic switching apparatus；11-12 is the Electromagnetic Control portion of multiconductor electromagentic switching apparatus K1, and 13-14 is more
The first switch portion of contact electromagnetic switch device K1,15-16 are the second switch portion of multiconductor electromagentic switching apparatus K1,17-18
For the third switch portion of multiconductor electromagentic switching apparatus K1；
K2 is delay electromagentic switching apparatus；21-22 is the Electromagnetic Control portion of delay electromagentic switching apparatus K2, and 2c is that delay electromagnetism is opened
The delay triggering end in device K2 Electromagnetic Control portion is closed, 23-24 is the switch portion of delay electromagentic switching apparatus K2；
K3 is single-pole double throw electromagentic switching apparatus；31-32 be single-pole double throw electromagentic switching apparatus K3 Electromagnetic Control portion, 33,34,
35 be respectively first switch terminal, second switch terminal and the third switch terminal of single-pole double throw electromagentic switching apparatus K3；
K4 is the first electromagentic switching apparatus；41-42 is the Electromagnetic Control portion of the first electromagentic switching apparatus K4, and 43-44 is the first electricity
The switch portion of magnetic switching device K4；
K5 is the second multiconductor electromagentic switching apparatus；51-52 is the Electromagnetic Control portion of the second multiconductor electromagentic switching apparatus K5,
53-54 is the first switch portion of the second multiconductor electromagentic switching apparatus K5, and 55-56 is the second multiconductor electromagentic switching apparatus K5's
Second switch portion；
K6 is the second electromagentic switching apparatus；61-62 is the Electromagnetic Control portion of the second electromagentic switching apparatus K6, and 63-64 is the second electricity
The switch portion of magnetic switching device K6.
In the accompanying drawings, the diagram state of the switch portion of delay electromagentic switching apparatus K2, for delay electromagentic switching apparatus K2 electricity
State when the delay triggering end in magnetic control portion obtains electric；In addition, the diagram state of the switch portion of other each electromagentic switching apparatus,
For corresponding electromagentic switching apparatus Electromagnetic Control portion power loss when state.
Specific embodiment
Embodiment one:
In the control system of Wind turbines, controller in master controller, that is, control cabinet, usually PLC controller
(Programmable Logic Controller, programmable logic controller (PLC)), by uninterruptible power supply UPS for electricity output
High-voltage end 24VDC and the electrical circuit power supply that is formed of low-pressure end 0VDC, be responsible for other electrical, microelectronics and electric power in control cabinet
The work of electronic component is controlled, and is monitored and controlled including the operating status to uninterruptible power supply UPS.It therefore, can be with
It is assisted using master controller, implements the low-temperature protection of uninterruptible power supply UPS operation.
As shown in Figure 1, the present invention provides a kind of low-temperature protection remote power-off control system for uninterruptible power supply, packet
The mains-supplied branch being connected in parallel between the first power end 230VAC-L of mains supply and second source end 230VAC-N is included, is used
It powers in for uninterruptible power supply UPS；In the present invention, the position at the first power end and second source end can be interchanged, i.e., and first
It can be 230VAC-L that power end, which can be 230VAC-N, second source end, have no effect on the implementation of technical solution of the present invention；Institute
The master controller for being connected to Wind turbines for the high-voltage end 24VDC and low-pressure end 0VDC of electricity output of uninterruptible power supply UPS is stated, is used
The power supply of Yu Weizhu controller power source；In addition, further including being connected in parallel between the first power end of mains supply and second source end
Power supply control branch, the power supply control branch include the Electromagnetic Control portion of concatenated multiconductor electromagentic switching apparatus K1, more touchings
The first switch portion of point electromagentic switching apparatus K1 and the first switch portion of the second multiconductor electromagentic switching apparatus K5, and multiconductor electricity
The second switch portion of magnetic switching device K1 is connected in the mains-supplied branch；The first of multiconductor electromagentic switching apparatus K1 opens
Pass portion and second switch portion the Electromagnetic Control portion of multiconductor electromagentic switching apparatus K1 obtain it is electric after be closed conducting；It further include connection
Between the low-pressure end for electricity output of remote power-off enable signal output end " UPS_SD " and uninterruptible power supply UPS of master controller
Remote power-off enable branch, the remote power-off enables branch road and is connected with the Electromagnetic Control of the first electromagentic switching apparatus K4
Portion；The remote power-off enable signal output end " UPS_SD " of the master controller exports in master controller shutdown or start-up course
Low level exports high level after master controller starts successfully；It further include being connected to uninterruptible power supply UPS for the high pressure of electricity output
Shutdown between end and the shutdown control terminal " SD " of uninterruptible power supply UPS triggers branch, and the shutdown triggering branch includes series connection
The first electromagentic switching apparatus K4 switch portion and multiconductor electromagentic switching apparatus K1 third switch portion；First electromagnetic switch dress
Set K4 Electromagnetic Control portion obtain it is electric after, switch portion is switched to disconnection by normal closure state；Multiconductor electromagentic switching apparatus K1's
Electromagnetic Control portion obtain it is electric after, third switch portion is switched to disconnection by normal closure state；The shutdown control of the uninterruptible power supply UPS
When end " SD " processed obtains electric, uninterruptible power supply UPS starts to execute power-off operation；The uninterruptible power supply UPS powers to master controller
Power supply line on be also in series with the switch portion of the second electromagentic switching apparatus K6；Height of the uninterruptible power supply UPS for electricity output
Low-temperature protection controlling brancher is also parallel between pressure side and low-pressure end, the low-temperature protection controlling brancher includes concatenated second electricity
The second switch portion in the Electromagnetic Control portion of magnetic switching device K6 and the second multiconductor electromagentic switching apparatus K5；Second electromagnetic switch dress
Set K6 Electromagnetic Control portion obtain it is electric after, switch portion closure conducting；It further include the enabled letter of low-temperature protection for being connected to master controller
Number output end " UPS_RESET " and uninterruptible power supply UPS enable branch for the low-temperature protection between the low-pressure end of electricity output, described
Low-temperature protection enables the Electromagnetic Control portion that branch road is connected with the second multiconductor electromagentic switching apparatus K5；The master controller it is low
Temperature protection enable signal output end " UPS_RESET " exports high level when environment temperature is lower than default protection temperature, otherwise defeated
Low level out；The Electromagnetic Control portion of the second multiconductor electromagentic switching apparatus K5 obtain it is electric after, first switch portion and second opens
It closes and disconnection is switched to by normal closure state.Wherein, the default protection temperature is lower than the low-temperature starting dynamic temperature of uninterruptible power supply
Degree, usually default protection temperature can be set to -30 DEG C ~ -20 DEG C, and the cold-starting temperature of uninterruptible power supply is usually 5 DEG C.
The present invention is used for the low-temperature protection remote power-off control system of uninterruptible power supply, control mode are as follows:
It is main when environment temperature is equal to or higher than default protection temperature during normal work after uninterruptible power supply starting
The low-temperature protection enable signal output end " UPS_RESET " of controller exports low level, the second multiconductor electromagentic switching apparatus K5
Electromagnetic Control portion power loss, the first switch portion of the second multiconductor electromagentic switching apparatus K5 and low-temperature protection in power supply control branch
The second switch of electromagentic switching apparatus K5 keeps normal closure state, the second electromagnetism in low-temperature protection controlling brancher in controlling brancher
The Electromagnetic Control portion of switching device K6 obtain it is electric so that the switch portion of the second electromagentic switching apparatus K6 is held on uninterruptible power supply
The power supply line that UPS powers to master controller, master controller are able to normal power supply work；Also, it keeps powering in mains supply
In the case where, so that power supply control branch rood electricity, the Electromagnetic Control portion of multiconductor electromagentic switching apparatus K1 are kept as electricity condition,
The third switch portion of multiconductor electromagentic switching apparatus K1 is also off-state in shutdown triggering branch, while master controller is long-range
Shut down enable signal output end " UPS_SD " output high level, and the Electromagnetic Control portion of the first electromagentic switching apparatus K4 obtains electric, shutdown
The switch portion for triggering the first electromagentic switching apparatus K4 in branch is also off-state, so that the shutdown of uninterruptible power supply UPS controls
It holds " SD " to be in and does not obtain electricity condition, uninterruptible power supply UPS shutdown will not be triggered.
When environment temperature is lower than default protection temperature, the low-temperature protection enable signal output end " UPS_ of master controller
RESET " export high level, the Electromagnetic Control portion of the second multiconductor electromagentic switching apparatus K5 obtain it is electric so that in power supply control branch
The second of electromagentic switching apparatus K5 in the first switch portion of second multiconductor electromagentic switching apparatus K5 and low-temperature protection controlling brancher
Switch is switched to off-state；The first switch portion of second multiconductor electromagentic switching apparatus K5, which disconnects, leads to power supply control branch
The Electromagnetic Control portion power loss of middle multiconductor electromagentic switching apparatus K1, the of multiconductor electromagentic switching apparatus K1 in shutdown triggering branch
Three switch portions are switched to normal closure state, meanwhile, the second switch disconnection of electromagentic switching apparatus K5 leads to low-temperature protection control branch
The Electromagnetic Control portion power loss of second electromagentic switching apparatus K6 in road, so that between the switch portion of the second electromagentic switching apparatus K6 disconnects not
The power supply line that power-off source UPS powers to master controller, master controller power down shutdown cause the low-temperature protection of master controller enabled
Signal output end " UPS_RESET " and remote power-off enable signal output end " UPS_SD " are exported because shutting down power down as low electricity
It is flat；Remote power-off enable signal output end " UPS_SD " output is the Electromagnetic Control that low level makes the first electromagentic switching apparatus K4
Portion's power loss, so that the switch portion of the first electromagentic switching apparatus K4 is also switched to normal closure state in shutdown triggering branch, from
And uninterruptible power supply UPS is for forming access between the high-voltage end of electricity output and the shutdown control terminal " SD " of uninterruptible power supply UPS, no
The shutdown control terminal " SD " of uninterruptible power UPS must be electric, starts to execute power-off operation；Meanwhile low-temperature protection enable signal output end
" UPS_RESET " output is the Electromagnetic Control portion power loss that low level makes the second multiconductor electromagentic switching apparatus K5, so that
Electromagnetism is opened in the first switch portion of the second multiconductor electromagentic switching apparatus K5 and low-temperature protection controlling brancher in power supply control branch
The second switch for closing device K5 reverts to normal closure state again, in this moment, since uninterruptible power supply UPS is from starting to execute shutdown
It operates and is fully finished the long period (related with the shutdown programm setting of UPS production firm) that shutdown substantially needs 3s ~ 30s,
Uninterruptible power supply UPS power-off operation is not yet completed, therefore uninterruptible power supply UPS is still being executed for electricity output, therefore low temperature is protected
Protect controlling brancher in the second electromagentic switching apparatus K6 Electromagnetic Control portion again it is electric so that the second electromagentic switching apparatus K6's opens
Pass portion is connected the power supply line that uninterruptible power supply UPS powers to master controller herein, master controller again it is electric and restart；
The start-up course of master controller usually requires 2 ~ 3min, i.e. duration needed for the start-up course of master controller is greater than uninterruptible power supply
UPS completes the duration of power-off operation, in the start-up course of master controller, the remote power-off enable signal output end of master controller
" UPS_SD " still exports low level, therefore the Electromagnetic Control portion of the first electromagentic switching apparatus K4 keeps power failure state, makes
Must shut down triggering branch in the first electromagentic switching apparatus K4 switch portion continue keep normal closure state；Meanwhile before this more than second
The first switch portion of contact electromagnetic switch device K5 disconnects the electricity for leading to multiconductor electromagentic switching apparatus K1 in power supply control branch
After magnetic control portion power loss, the cold-starting temperature for being lower than uninterruptible power supply permission due to presetting protection temperature, and current environment temperature
Degree has been lower than default protection temperature, therefore current environmental temperature is not enough to trigger the cold-starting operation of uninterruptible power supply permission,
So the Electromagnetic Control portion of multiconductor electromagentic switching apparatus K1 can not again electric, therefore the electricity of multiconductor electromagentic switching apparatus K1
Magnetic control portion because can not again it is electric due to continue keep power failure state so that shutdown triggering branch in multiconductor electromagentic switching apparatus
The third switch portion of K1 continues to keep normal closure state, thus high-voltage end and uninterrupted electricity of the uninterruptible power supply UPS for electricity output
Continue between the shutdown control terminal " SD " of source UPS keep access, the shutdown control terminal " SD " of uninterruptible power supply UPS persistently it is electric,
So that uninterruptible power supply UPS maintains to execute power-off operation, until uninterruptible power supply UPS completes shutdown；Uninterruptible power supply UPS shutdown
After stop powering to master controller, master controller power down shutdown, the low temperature for being achieved in uninterruptible power supply UPS and master controller is protected
Shield shutdown control.
In specific application, master controller can be acquired by low-temperature protection sensor and obtain environment temperature, to control it
Low-temperature protection enable signal output end " UPS_RESET " exports high level when environment temperature is lower than default protection temperature, this is
Relatively simple temperature observation circuit design；In addition, default protection temperature can be set to -30 DEG C ~ -20 DEG C, to be matched with to not
The low-temperature protection demand of uninterruptible power UPS and active controller.And for the active controllers such as PLC, preset protection temperature
Value be set at a benchmark value in system, after default, the control process of multilevel iudge is then complete
Have active controller has control program to execute, and executes signal value and compares and export a level signal according to comparison result
It is also the simple and regular function of the active controllers such as PLC, can be realized as using existing PLC controller.
Embodiment two:
Uninterruptible power supply starting after work normally during, if because the reasons such as mains power fails, maintenance power-off, not between
Power-off source UPS can be changed into battery operated mode, to be powered by its internal cell as institute's bringing onto load, but if alternating current powers off
Between in the case that too long, uninterruptible power supply UPS electric quantity consumption causes remaining capacity too low, continue powered operation and be then possible to lead
It causes the internal battery deep discharge of UPS and causes to damage, therefore be preferably able to have and prevent uninterruptible power supply UPS over-discharge
Safeguard measure.In the control system of Wind turbines, master controller is responsible for other electrical, microelectronics in control cabinet and electric power electricity
The work of subcomponent is controlled, and is monitored and controlled including the operating status to uninterruptible power supply UPS, therefore master controller
Be with uninterruptible power supply UPS keep signal communication, can monitor uninterruptible power supply UPS mains supply power supply state and
The power state information of internal cell.Therefore, it can use master controller assistance, implement under uninterruptible power supply UPS low battery
Running protection.
In view of this, the low-temperature protection remote power-off control system side of uninterruptible power supply is used for described in above-described embodiment one
On the basis of case, the remote power-off enable signal output end that can design master controller also reaches default disconnected in mains supply power-off
Electric duration or uninterruptible power supply UPS export low level when electricity is less than default electricity limit value under mains supply off-position.
In this way, during normal work after uninterruptible power supply starting, in the case where mains supply keeps powering, by
In power supply control branch rood electricity, the Electromagnetic Control portion of multiconductor electromagentic switching apparatus K1 is kept as electricity condition, in shutdown triggering branch
The third switch portion of multiconductor electromagentic switching apparatus K1 is off-state, while the remote power-off enable signal of master controller in road
Output end " UPS_SD " exports high level, the Electromagnetic Control portion of the first electromagentic switching apparatus K4 obtain it is electric, the in shutdown triggering branch
The switch portion of one electromagentic switching apparatus K4 is also off-state, so that the shutdown control terminal " SD " of uninterruptible power supply UPS is in not
Electricity condition is obtained, uninterruptible power supply UPS shutdown will not be triggered；When mains supply powers off so that multiconductor electromagnetism in power supply control branch
The Electromagnetic Control portion power loss of switching device K1, shutdown trigger the third switch portion switching of multiconductor electromagentic switching apparatus K1 in branch
For normal closure state, shape is powered off in mains supply when mains supply power-off reaches default power-off duration or uninterruptible power supply UPS
When electricity is less than default electricity limit value under state, the remote power-off enable signal output end " UPS_SD " of master controller exports low electricity
It is flat, the Electromagnetic Control portion power loss of the first electromagentic switching apparatus K4, so that the first electromagentic switching apparatus K4 in shutdown triggering branch
Switch portion is also switched to normal closure state, so that uninterruptible power supply UPS is for the high-voltage end of electricity output and the pass of uninterruptible power supply UPS
Access is formed between machine control terminal " SD ", the shutdown control terminal " SD " of uninterruptible power supply UPS must be electric, starts to execute power-off operation,
Realize the remote power-off control of uninterruptible power supply UPS.
When concrete application, presets power-off duration and default electricity limit value can be according to the real protection of uninterruptible power supply UPS
It needs and is designed, for example, default power-off duration usually may be set to 2 hours, default electricity limit value usually be may be set to not
The 10% ~ 20% of uninterruptible power UPS specified electric quantity.And for the active controllers such as PLC, preset power-off duration and default electricity
The value of limit value is set at a benchmark value in system, and after default, the control process of multilevel iudge is then
Have active controller completely has control program to execute, and executes signal value and compares and export a level according to comparison result
Signal is also the simple and regular function of the active controllers such as PLC, be can be realized as using existing PLC controller.
Certainly, in the case where uninterruptible power supply works normally and mains supply does not power off, since mains supply to supply
The Electromagnetic Control portion of multiconductor electromagentic switching apparatus K1 is kept as electricity condition in electric control branch, so that more in shutdown triggering branch
The third switch portion of contact electromagnetic switch device K1 is off-state, is disconnected the shutdown control of high-voltage end Yu uninterruptible power supply UPS
Electrical connection access between end " SD " processed, so even the remote power-off enable signal output end " UPS_SD " of master controller is because accidentally
Operation sends low level signal, will not trigger the remote power-off operation of uninterruptible power supply UPS；In addition, being obtained in uninterruptible power supply
It,, can be by control for automatically controlled under conditions of temperature environment allows if mains supply restores electricity after remote power-off
Branch processed is connected again, restores the power supply to uninterruptible power supply UPS, so that uninterruptible power supply UPS is restarted.
Embodiment three:
When uninterruptible power supply needs to restart after shut down, if starting uninterruptible power supply under the temperature environment lower than 5 DEG C, hold
UPS damage is easily led to, adverse effect is also resulted in for the operation stability of UPS, therefore be preferably able to have and prevent uninterrupted electricity
The safeguard measure of source UPS cold-starting.
In low-temperature protection remote power-off control system of the present invention for uninterruptible power supply, power supply control branch is to be used for
Maintain the continued power state of uninterruptible power supply in normal operation.And wherein, the electricity of multiconductor electromagentic switching apparatus K1
Magnetic control portion can design the electricity condition that it is controlled by temperature detect switch (TDS).For example, as shown in Figure 1, temperature detect switch (TDS) B1 can be designed
It can be in Electromagnetic Control of the environment temperature more than or equal to switching control multiconductor electromagentic switching apparatus K1 when presetting start-up temperature
Portion obtains electric, and when concrete application, default start-up temperature may be configured as 5 DEG C, to be matched with the cold-starting lower limit of uninterruptible power supply UPS
Temperature.
In this way, uninterruptible power supply is after shut down in the case where non-electrifying startup, environment temperature is lower than 5 DEG C in control cabinet
When default start-up temperature, the Electromagnetic Control portion that temperature detect switch (TDS) B1 will not control switching control multiconductor electromagentic switching apparatus K1 is obtained
Electricity, therefore the first switch portion of multiconductor electromagentic switching apparatus K1 and second switch portion are in off-state, power supply control branch
Road and mains-supplied branch for powering for uninterruptible power supply UPS do not turn on power supply, and uninterruptible power supply UPS not will start；
At this point, temperature detect switch (TDS) B1 can be used for the heater circuit in switching control conducting control cabinet, to environment temperature in control cabinet
Heat temperature raising is carried out, heater circuit is one of the common circuit in control cabinet control circuit, and physical circuit is designed as mature
The prior art, details are not described herein.When environment temperature raises to above or after default start-up temperature equal to 5 DEG C in control cabinet,
Temperature detect switch (TDS) B1 control switching control multiconductor electromagentic switching apparatus K1 Electromagnetic Control portion obtain it is electric so that multiconductor electromagnetic switch
The second switch portion of device K1 is connected, and the conducting of mains-supplied branch provides 230VAC power supply for uninterruptible power supply UPS, uninterrupted electricity
Source UPS is just started, and is reduced uninterruptible power supply and is caused to damage because of cold-starting；At the same time, due to power supply control branch
The first switch portion of multiconductor electromagentic switching apparatus K1 is also connected in road, so that power supply control branch forms continued power and leads to
Road is the Electromagnetic Control portion continued power of multiconductor electromagentic switching apparatus K1, is equivalent to so that multiconductor electromagentic switching apparatus K1
Self-locking current supply circuit is formed, hereafter, even if default start-up temperature of the environment temperature again below 5 DEG C causes temperature control to be opened in control cabinet
Power supply of the B1 disconnection to the Electromagnetic Control portion of multiconductor electromagentic switching apparatus K1 is closed, multiconductor electromagnetic switch will not be again resulted in
Device K1 power down and disconnect mains-supplied branch, ensure that uninterruptible power supply UPS starting after continued power, avoid environment temperature
Degree fluctuates near default start-up temperature and uninterruptible power supply UPS is caused the operation such as frequently to power off, restart, and then between avoiding not
Power-off source UPS under the low temperature environment near default start-up temperature frequent starting and caused by damage, more favorably ensure uninterrupted
The service life and job stability of power supply UPS.
In the low-temperature protection remote power-off control system for uninterruptible power supply of the invention, temperature detect switch (TDS) B1 switching control
The Electromagnetic Control portion of multiconductor electromagentic switching apparatus K1 processed obtains electric circuit design can be there are many form.For example, can be such as Fig. 1
It is shown, directly by the Electromagnetic Control portion both ends of multiconductor electromagentic switching apparatus K1 be connected in parallel to again mains supply the first power end and
Between second source end, temperature detect switch (TDS) B1 is set in the parallel branch, in this way, temperature detect switch (TDS) B1 is greater than or waits in environment temperature
When default start-up temperature after switched conductive, the Electromagnetic Control portion of multiconductor electromagentic switching apparatus K1 can obtain electric；But it is such
Circuit design mode not yet stably reaches default open when control cabinet interior environment temperature also fluctuates near default start-up temperature
When more than dynamic temperature angle value, it is possible to the Electromagnetic Control that temperature detect switch (TDS) B1 is connected and makes multiconductor electromagentic switching apparatus K1 can be triggered
Portion obtains electric, triggering uninterruptible power supply UPS starting, so that uninterruptible power supply UPS does not obtain effective cold-starting protection.
Therefore, as a kind of stability more preferably circuit design, as shown in Fig. 2, of the invention for uninterrupted
In the low-temperature protection remote power-off control system of power supply, the first power end including being connected in parallel on mains supply and can also be designed
Temperature control branch and starting triggering branch between two power ends；The temperature detect switch (TDS) B1 is arranged in temperature control branch, and temperature control branch
Road further includes the Electromagnetic Control portion with the concatenated single-pole double throw electromagentic switching apparatus K3 of temperature detect switch (TDS) B1, and the temperature detect switch (TDS) B1 exists
Switched conductive temperature control branch when environment temperature is greater than or equal to default start-up temperature；The starting triggering branch includes being connected in parallel on institute
The Electromagnetic Control portion of the delay electromagentic switching apparatus K2 between the first power end and second source end is stated, and the electromagnetic switch dress that is delayed
The delay triggering end for setting K2 Electromagnetic Control portion is connected to the second switch terminal of single-pole double throw electromagentic switching apparatus K3, single-pole double throw
The first switch terminal of electromagentic switching apparatus K3 is connected to the first power end of mains supply, single-pole double throw electromagentic switching apparatus K3
Third switch terminal be connected to multiconductor electromagnetism in power supply control branch by the switch portion for the electromagentic switching apparatus K2 that is delayed and open
It closes between the Electromagnetic Control portion of device K1 and the first switch portion of multiconductor electromagentic switching apparatus K1, and more in power supply control branch
One terminal in first switch portion of the Electromagnetic Control portion of contact electromagnetic switch device K1 far from multiconductor electromagentic switching apparatus K1
It is connected to the second source end of mains supply；When the Electromagnetic Control portion power loss of single-pole double throw electromagentic switching apparatus K3, first is opened
Terminal is closed to be connected with second switch terminal, when the Electromagnetic Control portion of single-pole double throw electromagentic switching apparatus K3 obtains electric, first switch
Terminal is connected with third switch terminal；It is described delay electromagentic switching apparatus K2 Electromagnetic Control portion delay triggering end be electric shape
When state, switch portion remains closed on state, when delay electromagentic switching apparatus K2 Electromagnetic Control portion delay triggering end from
Electricity condition variation be power failure state when, delay electromagentic switching apparatus K2 switch portion disconnects immediately and through presetting delay time
After re-close conducting.
In this way, environment temperature is pre- lower than 5 DEG C in control cabinet in the case where uninterruptible power supply UPS non-electrifying startup
If when start-up temperature, temperature detect switch (TDS) B1 does not turn on temperature control branch, at the Electromagnetic Control portion of single-pole double throw electromagentic switching apparatus K3
It is connected in the first switch terminal of power failure state, single-pole double throw electromagentic switching apparatus K3 with second switch terminal, delay electromagnetism is opened
The delay triggering end for closing device K2 Electromagnetic Control portion is in obtain electricity condition, and the switch portion of delay electromagentic switching apparatus K2 remains closed
On state；But control at this time the Electromagnetic Control portion of multiconductor electromagentic switching apparatus K1 still also not it is electric, therefore multiconductor is electric
The first switch portion and second switch portion of magnetic switching device K1 is in off-state, power supply control branch and for being uninterrupted
The mains-supplied branch of power supply UPS power supply does not turn on power supply, and uninterruptible power supply UPS not will start.
After environment temperature is greater than or equal to 5 DEG C of default start-up temperature in control cabinet, temperature detect switch (TDS) B1 control switching control
Temperature control branch processed is connected, and obtains electric, single-pole double throw electromagentic switching apparatus at the Electromagnetic Control portion of single-pole double throw electromagentic switching apparatus K3
The first switch terminal of K3 is connected with third switch terminal, leads to the delay triggering in delay electromagentic switching apparatus K2 Electromagnetic Control portion
End is power failure state from electricity condition variation is obtained, and the switch portion for the electromagentic switching apparatus K2 that is delayed at this time disconnects immediately, and by advance
If can just re-close conducting after delay time, therefore the Electromagnetic Control portion of multiconductor electromagentic switching apparatus K1 can not obtain immediately
Electricity, until default delay time is delayed later, the switch portion of electromagentic switching apparatus K2 re-closes conducting, at this moment control cabinet inner ring
Border temperature fails to be remained above or be equal to default start-up temperature if there is temperature fluctuation, and temperature detect switch (TDS) B1 is then disconnected, and leads to list
The first switch terminal of dpdt double-pole double-throw (DPDT) electromagentic switching apparatus K3 is disconnected with third switch terminal, multiconductor electromagentic switching apparatus K1's
Electromagnetic Control portion then can not still obtain electric, and the first switch portion and second switch portion of multiconductor electromagentic switching apparatus K1 is still in
Off-state, and then uninterruptible power supply UPS starting will not be triggered；And if the switch portion of delay electromagentic switching apparatus K2 is being passed through
When re-closing conducting after default delay time, if environment temperature is also maintained at greater than or equal to 5 DEG C default in control cabinet
Under the conditions of start-up temperature, so that the first switch terminal of temperature detect switch (TDS) B1 control single-pole double throw electromagentic switching apparatus K3 is opened with third
It closes terminal to be held on, the Electromagnetic Control portion of multiconductor electromagentic switching apparatus K1 just passes through the switch of delay electromagentic switching apparatus K2
The first switch terminal of portion and single-pole double throw electromagentic switching apparatus K3 be connected with third switch terminal the electrical circuit to be formed obtain it is electric,
So that the first switch portion and second switch portion of multiconductor electromagentic switching apparatus K1 are both turned on, it is connected to mains-supplied branch and confession
Electric control branch, uninterruptible power supply UPS is just able to for electrically activating, and is filled in power supply control branch by multiconductor electromagnetic switch
It sets K1 and forms self-locking current supply circuit.
As a result, in control cabinet environment temperature it is more stable reach default start-up temperature condition after, uninterrupted electricity
Source UPS is just able to further reduced the risk that uninterruptible power supply causes damage because of cold-starting, more favorably really for electrically activating
Protect the service life and job stability of uninterruptible power supply UPS.When concrete application, the default delay for the electromagentic switching apparatus K2 that is delayed
Time can according to need selection and be set as 10 ~ 20 seconds, can preferably guarantee that environment temperature is more stable in control cabinet
Reach default start-up temperature condition.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to reality
Example is applied to describe the invention in detail, those skilled in the art should understand that, it can be to technical side of the invention
Case is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered in the present invention
Scope of the claims in.
Claims (10)
1. being used for the low-temperature protection remote power-off control system of uninterruptible power supply, the first power end including being connected in parallel on mains supply
Mains-supplied branch between second source end, for powering for uninterrupted power supply (ups) Unity；The uninterrupted power supply (ups) Unity
The master controller that Wind turbines are connected to for the high-voltage end and low-pressure end of electricity output, for for main controller power source power；Its
It is characterized in that:
It further include the power supply control branch being connected in parallel between the first power end of mains supply and second source end, it is described for automatically controlled
Branch processed include the Electromagnetic Control portion of concatenated multiconductor electromagentic switching apparatus (K1), multiconductor electromagentic switching apparatus (K1)
The first switch portion of one switch portion and the second multiconductor electromagentic switching apparatus (K5), and the of multiconductor electromagentic switching apparatus (K1)
Two switch portions are connected in the mains-supplied branch；The first switch portion of multiconductor electromagentic switching apparatus (K1) and second switch
Portion the Electromagnetic Control portion of multiconductor electromagentic switching apparatus (K1) obtain it is electric after be closed conducting；
It further include the remote power-off enable signal output end for being connected to master controller and uninterrupted power supply (ups) Unity for the low of electricity output
Remote power-off between pressure side enables branch, and the remote power-off enables branch road and is connected with the first electromagentic switching apparatus (K4)
Electromagnetic Control portion；The remote power-off enable signal output end of the master controller exports in master controller shutdown or start-up course
Low level exports high level after master controller starts successfully；
It further include being connected to uninterrupted power supply (ups) Unity for the high-voltage end of electricity output and the shutdown control terminal of uninterrupted power supply (ups) Unity
Between shutdown trigger branch, the shutdown triggering branch includes the switch portion of concatenated first electromagentic switching apparatus (K4) and more
The third switch portion of contact electromagnetic switch device (K1)；The Electromagnetic Control portion of first electromagentic switching apparatus (K4) obtain it is electric after, open
Pass portion is switched to disconnection by normal closure state；The Electromagnetic Control portion of multiconductor electromagentic switching apparatus (K1) obtain it is electric after, third is opened
Pass portion is switched to disconnection by normal closure state；When the shutdown control terminal of the uninterrupted power supply (ups) Unity obtains electric, uninterruptible power supply
(UPS) start to execute power-off operation；
The second electromagentic switching apparatus (K6) is also in series in the power supply line that the uninterrupted power supply (ups) Unity is powered to master controller
Switch portion；
The uninterrupted power supply (ups) Unity for being also parallel with low-temperature protection controlling brancher between the high-voltage end and low-pressure end of electricity output,
The low-temperature protection controlling brancher includes Electromagnetic Control portion and the second multiconductor electricity of concatenated second electromagentic switching apparatus (K6)
The second switch portion of magnetic switching device (K5)；The Electromagnetic Control portion of second electromagentic switching apparatus (K6) obtain it is electric after, switch portion is closed
Close conducting；
It further include the low-temperature protection enable signal output end for being connected to master controller and uninterrupted power supply (ups) Unity for the low of electricity output
Low-temperature protection between pressure side enables branch, and the low-temperature protection enables branch road and is connected with the second multiconductor electromagentic switching apparatus
(K5) Electromagnetic Control portion；The low-temperature protection enable signal output end of the master controller is in environment temperature lower than default protection temperature
High level is exported when spending, and otherwise exports low level；The Electromagnetic Control portion of the second multiconductor electromagentic switching apparatus (K5) obtains electric
Afterwards, first switch portion and second switch, which are closed, is switched to disconnection by normal closure state；
The default protection temperature is lower than the cold-starting temperature of uninterruptible power supply.
2. being used for the low-temperature protection remote power-off control system of uninterruptible power supply according to claim 1, which is characterized in that institute
It states master controller and environment temperature is obtained by the acquisition of low-temperature protection sensor, existed with controlling its low-temperature protection enable signal output end
High level is exported when environment temperature is lower than default protection temperature.
3. being used for the low-temperature protection remote power-off control system of uninterruptible power supply according to claim 1, which is characterized in that institute
Stating default protection temperature is -30 DEG C ~ -20 DEG C.
4. being used for the low-temperature protection remote power-off control system of uninterruptible power supply according to claim 1, which is characterized in that institute
The remote power-off enable signal output end for stating master controller also reaches default power-off duration or uninterrupted electricity in mains supply power-off
Source (UPS) exports low level when electricity is less than default electricity limit value under mains supply off-position.
5. being used for the low-temperature protection remote power-off control system of uninterruptible power supply according to claim 4, which is characterized in that institute
It states 2 hours a length of when default power-off.
6. being used for the low-temperature protection remote power-off control system of uninterruptible power supply according to claim 4, which is characterized in that institute
State 10% ~ 20% that default electricity limit value is uninterrupted power supply (ups) Unity specified electric quantity.
7. being used for the low-temperature protection remote power-off control system of uninterruptible power supply according to claim 1, which is characterized in that also
Including the temperature control branch and starting triggering branch being connected in parallel between the first power end of mains supply and second source end；
The temperature control branch includes the Electromagnetic Control portion of concatenated temperature detect switch (TDS) (B1), single-pole double throw electromagentic switching apparatus (K3),
The temperature detect switch (TDS) (B1) switched conductive temperature control branch when environment temperature is greater than or equal to default start-up temperature；
The starting triggering branch includes the delay electromagnetic switch dress being connected in parallel between first power end and second source end
The Electromagnetic Control portion of (K2) is set, and the delay triggering end in electromagentic switching apparatus (K2) the Electromagnetic Control portion that is delayed is connected to single-pole double throw
The first switch terminal of the second switch terminal of electromagentic switching apparatus (K3), single-pole double throw electromagentic switching apparatus (K3) is connected to city
The third switch terminal of first power end of power supply, single-pole double throw electromagentic switching apparatus (K3) passes through delay electromagentic switching apparatus
(K2) switch portion is connected to the Electromagnetic Control portion of multiconductor electromagentic switching apparatus (K1) and multiconductor electricity in power supply control branch
Between the first switch portion of magnetic switching device (K1), and in power supply control branch multiconductor electromagentic switching apparatus (K1) electromagnetism control
One terminal in first switch portion of the portion processed far from multiconductor electromagentic switching apparatus (K1) is connected to the second source of mains supply
End；When the Electromagnetic Control portion power loss of single-pole double throw electromagentic switching apparatus (K3), first switch terminal is led with second switch terminal
Logical, when the Electromagnetic Control portion of single-pole double throw electromagentic switching apparatus (K3) obtains electric, first switch terminal is led with third switch terminal
It is logical；It is described delay electromagentic switching apparatus (K2) Electromagnetic Control portion delay triggering end be electricity condition when, switch portion keep
It is closed on state, when the delay triggering end in the Electromagnetic Control portion of delay electromagentic switching apparatus (K2) is lost from electricity condition variation is obtained
When electricity condition, the switch portion of delay electromagentic switching apparatus (K2) is disconnected immediately and is re-closed after default delay time and leads
It is logical.
8. being used for the low-temperature protection remote power-off control system of uninterruptible power supply according to claim 7, which is characterized in that institute
The default start-up temperature for stating temperature detect switch (TDS) (B1) is set as 5 DEG C.
9. being used for the low-temperature protection remote power-off control system of uninterruptible power supply according to claim 7, which is characterized in that institute
The default delay time for stating delay electromagentic switching apparatus (K2) is 10 ~ 20 seconds.
10. being used for the low-temperature protection remote power-off control method of uninterruptible power supply, which is characterized in that using such as claim 1 institute
It states and is controlled for the low-temperature protection remote power-off control system of uninterruptible power supply, control method specifically:
It is main when environment temperature is equal to or higher than default protection temperature during normal work after uninterruptible power supply starting
The low-temperature protection enable signal output end of controller exports low level, the Electromagnetic Control of the second multiconductor electromagentic switching apparatus (K5)
Portion's power loss, the first switch portion of the second multiconductor electromagentic switching apparatus (K5) and low-temperature protection controlling brancher in power supply control branch
The second switch of middle electromagentic switching apparatus (K5) keeps normal closure state, and the second electromagnetic switch fills in low-temperature protection controlling brancher
Set (K6) Electromagnetic Control portion obtain it is electric so that the switch portion of the second electromagentic switching apparatus (K6) is held on uninterruptible power supply
(UPS) power supply line powered to master controller, master controller are able to normal power supply work；Also, it keeps supplying in mains supply
In the case where electricity, so that power supply control branch rood electricity, the Electromagnetic Control portion of multiconductor electromagentic switching apparatus (K1) is kept as electric shape
State, the third switch portion of multiconductor electromagentic switching apparatus (K1) is also off-state in shutdown triggering branch, while main control
The remote power-off enable signal output end of device exports high level, and the Electromagnetic Control portion of the first electromagentic switching apparatus (K4) obtains electric, pass
The switch portion that machine triggers the first electromagentic switching apparatus (K4) in branch is also off-state, so that the pass of uninterrupted power supply (ups) Unity
Machine control terminal, which is in, does not obtain electricity condition；
When environment temperature is lower than default protection temperature, the low-temperature protection enable signal output end of master controller exports high level,
The Electromagnetic Control portion of second multiconductor electromagentic switching apparatus (K5) obtain it is electric so that the second multiconductor electromagnetism is opened in power supply control branch
The second switch for closing electromagentic switching apparatus (K5) in the first switch portion and low-temperature protection controlling brancher of device (K5) is switched to
Off-state；The first switch portion of second multiconductor electromagentic switching apparatus (K5), which disconnects, leads to multiconductor electricity in power supply control branch
The Electromagnetic Control portion power loss of magnetic switching device (K1), shutdown trigger the third switch of multiconductor electromagentic switching apparatus (K1) in branch
Portion is switched to normal closure state, meanwhile, the second switch disconnection of electromagentic switching apparatus (K5) causes in low-temperature protection controlling brancher
The Electromagnetic Control portion power loss of second electromagentic switching apparatus (K6), so that between the switch portion of the second electromagentic switching apparatus (K6) disconnects not
The power supply line that power-off source (UPS) powers to master controller, master controller power down shutdown, causes the low-temperature protection of master controller to make
Energy signal output end and remote power-off enable signal output end are exported because shutting down power down as low level；The enabled letter of remote power-off
The output of number output end is the Electromagnetic Control portion power loss that low level makes the first electromagentic switching apparatus (K4), so that shutdown triggering
The switch portion of the first electromagentic switching apparatus (K4) is also switched to normal closure state in branch, so that uninterrupted power supply (ups) Unity is powered
Access, the shutdown control of uninterrupted power supply (ups) Unity are formed between the high-voltage end of output and the shutdown control terminal of uninterrupted power supply (ups) Unity
End processed obtain it is electric, start execute power-off operation；Meanwhile the output of low-temperature protection enable signal output end is that low level to touch second more
The Electromagnetic Control portion power loss of point electromagentic switching apparatus (K5), so that the second multiconductor electromagnetic switch fills in power supply control branch
Set electromagentic switching apparatus (K5) in the first switch portion and low-temperature protection controlling brancher of (K5) second switch revert to again it is normally closed
Conjunction state, in this moment, uninterrupted power supply (ups) Unity power-off operation is not yet completed, therefore uninterrupted power supply (ups) Unity is still executing
For electricity output, thus in low-temperature protection controlling brancher the second electromagentic switching apparatus (K6) Electromagnetic Control portion again it is electric so that
The power supply line that uninterrupted power supply (ups) Unity is powered to master controller is connected in the switch portion of second electromagentic switching apparatus (K6) herein,
Master controller again it is electric and restart；Duration needed for the start-up course of master controller is completed greater than uninterrupted power supply (ups) Unity
The duration of power-off operation, in the start-up course of master controller, the remote power-off enable signal output end of master controller is still defeated
Low level out, therefore the Electromagnetic Control portion of the first electromagentic switching apparatus (K4) keeps power failure state, so that shutdown triggering branch
The switch portion of the first electromagentic switching apparatus (K4) continues to keep normal closure state in road；Meanwhile the second multiconductor electromagnetism is opened before this
The first switch portion for closing device (K5) disconnects the Electromagnetic Control for leading to multiconductor electromagentic switching apparatus (K1) in power supply control branch
After portion's power loss, the Electromagnetic Control portion of multiconductor electromagentic switching apparatus (K1) because can not again it is electric due to continue to keep power failure state,
So that the third switch portion of multiconductor electromagentic switching apparatus (K1) continues to keep normal closure state in shutdown triggering branch, thus not
Uninterruptible power (UPS) between the high-voltage end of electricity output and the shutdown control terminal of uninterrupted power supply (ups) Unity for continuing to keep access, no
The shutdown control terminal of uninterruptible power (UPS) persistently it is electric so that uninterrupted power supply (ups) Unity maintains to execute power-off operation, until not
Uninterruptible power (UPS) completes shutdown；Stop powering to master controller after uninterrupted power supply (ups) Unity shutdown, master controller power down is closed
Machine is achieved in the low-temperature protection shutdown control of uninterrupted power supply (ups) Unity and master controller.
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| CN109390911B (en) | 2024-02-20 |
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