CN209389693U - Low-temperature protection remote power-off control system for uninterruptible power supply - Google Patents
Low-temperature protection remote power-off control system for uninterruptible power supply Download PDFInfo
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- CN209389693U CN209389693U CN201822247962.3U CN201822247962U CN209389693U CN 209389693 U CN209389693 U CN 209389693U CN 201822247962 U CN201822247962 U CN 201822247962U CN 209389693 U CN209389693 U CN 209389693U
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Abstract
The utility model provides a kind of low-temperature protection remote power-off control system 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 Low-temperature protection control and over-discharge protection control are provided to uninterruptible power supply in Wind turbines and main operation controller.
Description
Technical field
The utility model relates to Control Technology of Wind Power Generation System fields, in particular to a kind of for the low of uninterruptible power supply
Temperature protection 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.
Utility model content
Aiming at the above shortcomings existing in the prior art, the purpose of this utility model is to provide one kind for uninterrupted electricity
The low-temperature protection remote power-off control system in source provides low-temperature protection control to the operation to uninterruptible power supply in Wind turbines
System.
In order to achieve the above purposes, the technical solution adopted by the utility model is:
For the low-temperature protection remote power-off control system of uninterruptible power supply, the first power supply including being connected in parallel on mains supply
Mains-supplied branch between end and second source end, for powering for uninterruptible power supply；The power supply of the uninterruptible power supply is defeated
High-voltage end and low-pressure end out is 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, the confession
Electric control branch includes that the Electromagnetic Control portion of concatenated multiconductor electromagentic switching apparatus, multiconductor electromagentic switching apparatus first are opened
The first switch portion in pass portion and the second multiconductor electromagentic switching apparatus, and the second switch portion series connection of multiconductor electromagentic switching apparatus
In the mains-supplied branch；The first switch portion and second switch portion of multiconductor electromagentic switching apparatus are in multiconductor electromagnetism
The Electromagnetic Control portion of switching device 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 uninterruptible power supply for the low of electricity output
Remote power-off between pressure side enables branch, and the remote power-off enables the electromagnetism that branch road is connected with the first electromagentic switching apparatus
Control unit；The remote power-off enable signal output end of the master controller exports low electricity in master controller shutdown or start-up course
It is flat, high level is exported after master controller starts successfully；
It further include being connected to uninterruptible power supply between the high-voltage end of electricity output and the shutdown control terminal of uninterruptible power supply
Shutdown triggering branch, the shutdown triggering branch includes that the switch portion of concatenated first electromagentic switching apparatus and multiconductor electromagnetism are opened
Close the third switch portion of device；The Electromagnetic Control portion of first electromagentic switching apparatus obtain it is electric after, switch portion is cut by normal closure state
It is changed to disconnection；The Electromagnetic Control portion of multiconductor electromagentic switching apparatus obtain it is electric after, third switch portion is switched to by normal closure state
It disconnects；When the shutdown control terminal of the uninterruptible power supply obtains electric, uninterruptible power supply starts to execute power-off operation；
Opening for the second electromagentic switching apparatus is also in series in the power supply line that the uninterruptible power supply is powered to master controller
Pass portion；
The uninterruptible power supply is for being also parallel with low-temperature protection controlling brancher, institute between the high-voltage end and low-pressure end of electricity output
State the Electromagnetic Control portion and the second multiconductor electromagnetic switch that low-temperature protection controlling brancher includes concatenated second electromagentic switching apparatus
The second switch portion of device；The Electromagnetic Control portion of second electromagentic switching apparatus obtain it is electric after, switch portion closure conducting；
It further include the low-temperature protection enable signal output end for being connected to master controller and uninterruptible power supply 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
Electromagnetic Control portion；The low-temperature protection enable signal output end of the master controller is when environment temperature is lower than default protection temperature
High level is exported, low level is otherwise exported；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, described
Temperature detect switch (TDS) switched conductive temperature control branch when environment temperature is greater than or equal to default start-up temperature；
The starting triggering branch includes that the delay electromagnetism being connected in parallel between first power end and second source end is opened
The Electromagnetic Control portion of device is closed, and the delay triggering end in the electromagentic switching apparatus Electromagnetic Control portion that is delayed is connected to single-pole double throw electromagnetism
The second switch terminal of switching device, the first switch terminal of single-pole double throw electromagentic switching apparatus are connected to the first of mains supply
The third switch terminal of power end, single-pole double throw electromagentic switching apparatus is connected to confession by the switch portion for the electromagentic switching apparatus that is delayed
In electric control branch the first switch portion of the Electromagnetic Control portion of multiconductor electromagentic switching apparatus and multiconductor electromagentic switching apparatus it
Between, and in power supply control branch multiconductor electromagentic switching apparatus Electromagnetic Control portion far from the first of multiconductor electromagentic switching apparatus
One terminal of switch portion is connected to the second source end of mains supply；It loses in the Electromagnetic Control portion of single-pole double throw electromagentic switching apparatus
When electric, first switch terminal is connected with second switch terminal, when the Electromagnetic Control portion of single-pole double throw electromagentic switching apparatus obtains electric,
Its first switch terminal is connected with third switch terminal；The delay triggering end in the Electromagnetic Control portion of the delay electromagentic switching apparatus
When to obtain electricity condition, switch portion remains closed on state, when the delay touching in the Electromagnetic Control portion of delay electromagentic switching apparatus
Originator from electricity condition variation be power failure state when, the switch portion for the electromagentic switching apparatus that is delayed is disconnected immediately and is delayed by default
Conducting is re-closed after time.
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.
Compared with the prior art, the utility model has the following beneficial effects:
1, the low-temperature protection remote power-off control system for uninterruptible power supply of the utility model, can effectively control not
Uninterruptible power triggers control by master controller in the case where environment temperature is lower than default protection temperature and executes remote power-off, and band
Dynamic master controller shutdown, reduce uninterruptible power supply i.e. master controller in the case where crossing low-temperature environment long-play and cause to damage
Risk, realize and provide 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 for uninterruptible power supply of the utility model, additionally it is possible to effectively control
Uninterruptible power supply reaches default power-off duration in mains supply power-off or uninterruptible power supply is electric under mains supply off-position
Amount executes remote power-off in the case where being less than default electricity limit value, reduces uninterruptible power supply and makes because of its internal battery deep discharge
At the risk of damage, realizes and control is protected to the over-discharge of uninterruptible power supply.
Detailed description of the invention
Fig. 1 is circuit of the utility model for the low-temperature protection remote power-off control system embodiment one of uninterruptible power supply
Structure chart.
Fig. 2 is circuit of the utility model for the low-temperature protection remote power-off control system embodiment three of uninterruptible power supply
Structure chart.
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 K1,13-14
For the first switch portion of multiconductor electromagentic switching apparatus K1,15-16 is the second switch portion of multiconductor electromagentic switching apparatus K1,
17-18 is 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 delay electricity
The delay triggering end in magnetic switching device K2 Electromagnetic Control portion, 23-24 are the switch portion of delay electromagentic switching apparatus K2；
K3 is single-pole double throw electromagentic switching apparatus；31-32 is the Electromagnetic Control portion of single-pole double throw electromagentic switching apparatus K3,
33,34,35 be respectively single-pole double throw electromagentic switching apparatus K3 first switch terminal, second switch terminal and third switch terminals
Son；
K4 is the first electromagentic switching apparatus；41-42 is the Electromagnetic Control portion of the first electromagentic switching apparatus K4,43-44 the
The switch portion of one electromagentic switching apparatus K4；
K5 is the second multiconductor electromagentic switching apparatus；51-52 is the Electromagnetic Control of the second multiconductor electromagentic switching apparatus K5
Portion, 53-54 are the first switch portion of the second multiconductor electromagentic switching apparatus K5, and 55-56 is the second multiconductor electromagentic switching apparatus
The second switch portion of K5；
K6 is the second electromagentic switching apparatus；61-62 is the Electromagnetic Control portion of the second electromagentic switching apparatus K6,63-64 the
The switch portion of two electromagentic switching apparatus 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 utility model provides a kind of low-temperature protection remote power-off control system for uninterruptible power supply
System, including the mains-supplied branch being connected in parallel between the first power end 230VAC-L of mains supply and second source end 230VAC-N
Road, for powering for uninterruptible power supply UPS；In the present invention, the position at the first power end and second source end can be mutual
It changes, i.e. it can be 230VAC-L that the first power end, which can be 230VAC-N, second source end, have no effect on the utility model technology
The implementation of scheme；The high-voltage end 24VDC and low-pressure end 0VDC for electricity output of the uninterruptible power supply UPS is connected to Wind turbines
Master controller, for for main controller power source power；In addition, further including the first power end and second for being connected in parallel on mains supply
Power supply control branch between power end, the power supply control branch include the electromagnetism of concatenated multiconductor electromagentic switching apparatus K1
Control unit, the first switch portion of multiconductor electromagentic switching apparatus K1 and the second multiconductor electromagentic switching apparatus K5 first switch
Portion, and the second switch portion of multiconductor electromagentic switching apparatus K1 is connected in the mains-supplied branch；Multiconductor electromagnetic switch
The first switch portion and second switch portion of device K1 the Electromagnetic Control portion of multiconductor electromagentic switching apparatus K1 obtain it is electric after be closed
Conducting；It further include that the remote power-off enable signal output end " UPS_SD " for being connected to master controller and uninterruptible power supply UPS power
Remote power-off between the low-pressure end of output enables branch, and the remote power-off enables branch road and is connected with the first electromagnetic switch dress
Set the Electromagnetic Control portion of K4；The remote power-off enable signal output end " UPS_SD " of the master controller master controller shut down or
Low level is exported in start-up course, exports high level after master controller starts successfully；It further include being connected to uninterruptible power supply UPS
Shutdown between high-voltage end for electricity output and the shutdown control terminal " SD " of uninterruptible power supply UPS triggers branch, the shutdown touching
Sending out branch includes the switch portion of concatenated first electromagentic switching apparatus K4 and the third switch portion of multiconductor electromagentic switching apparatus K1；
The Electromagnetic Control portion of first electromagentic switching apparatus K4 obtain it is electric after, switch portion is switched to disconnection by normal closure state；Multiconductor electricity
The Electromagnetic Control portion of magnetic switching device K1 obtain it is electric after, third switch portion is switched to disconnection by normal closure state；It is described uninterrupted
When the shutdown control terminal " SD " of power supply UPS obtains electric, uninterruptible power supply UPS starts to execute power-off operation；The uninterruptible power supply UPS
The switch portion of the second electromagentic switching apparatus K6 is also in series in the power supply line powered to master controller；The uninterruptible power supply
UPS is for being also parallel with low-temperature protection controlling brancher, the low-temperature protection controlling brancher between the high-voltage end and low-pressure end of electricity output
The second switch in Electromagnetic Control portion and the second multiconductor electromagentic switching apparatus K5 including concatenated second electromagentic switching apparatus K6
Portion；The Electromagnetic Control portion of second electromagentic switching apparatus K6 obtain it is electric after, switch portion closure conducting；It further include being connected to master controller
Low-temperature protection enable signal output end " UPS_RESET " and uninterruptible power supply UPS for the low temperature between the low-pressure end of electricity output
Enabled branch is protected, the low-temperature protection enables the Electromagnetic Control that branch road is connected with the second multiconductor electromagentic switching apparatus K5
Portion；The low-temperature protection enable signal output end " UPS_RESET " of the master controller is in environment temperature lower than default protection temperature
When export high level, otherwise export low level；The Electromagnetic Control portion of the second multiconductor electromagentic switching apparatus K5 obtain it is electric after,
First switch portion and second switch, which are closed, is switched to disconnection by normal closure state.Wherein, described default to protect temperature lower than between not
The cold-starting temperature in power-off source, usually default protection temperature can be set to -30 DEG C ~ -20 DEG C, and the low-temperature starting of uninterruptible power supply
Dynamic temperature is usually 5 DEG C.
In this way, being equal to or higher than default protection in environment temperature during normal work after uninterruptible power supply starting
When temperature, the low-temperature protection enable signal output end " UPS_RESET " of master controller exports low level, and the second multiconductor electromagnetism is opened
The Electromagnetic Control portion power loss for closing device K5, in power supply control branch the first switch portion of the second multiconductor electromagentic switching apparatus K5 and
The second switch of electromagentic switching apparatus K5 keeps normal closure state in low-temperature protection controlling brancher, in low-temperature protection controlling brancher
The Electromagnetic Control portion of second electromagentic switching apparatus K6 obtain it is electric so that between the switch portion of the second electromagentic switching apparatus K6 is held on not
The power supply line that power-off source UPS powers to master controller, master controller are able to normal power supply work；Also, it is protected in mains supply
In the case where holding power supply, so that power supply control branch rood electricity, the Electromagnetic Control portion of multiconductor electromagentic switching apparatus K1 is kept as electricity
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 " UPS_SD " of device exports high level, and the Electromagnetic Control portion of the first electromagentic switching apparatus K4 obtains
Electricity, the switch portion that shutdown triggers the first electromagentic switching apparatus K4 in branch is also off-state, so that the pass of uninterruptible power supply UPS
Machine control terminal " SD ", which is in, does not obtain electricity condition, will not trigger uninterruptible power supply UPS shutdown.
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:
During normal work after uninterruptible power supply starting, 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 is disconnected
Electric overlong time, uninterruptible power supply UPS electric quantity consumption cause remaining capacity too low in the case where, continuing powered operation, then have can
It can lead to the internal battery deep discharge of UPS and cause to damage, therefore be preferably able to have and prevent uninterruptible power supply UPS from excessively putting
The safeguard measure of electricity.In the control system of Wind turbines, master controller is responsible for other electrical, microelectronics and electricity in control cabinet
The work of power electronic component is controlled, and is monitored and controlled including the operating status to uninterruptible power supply UPS, therefore master control
Device processed is to keep signal communication with uninterruptible power supply UPS, can monitor the mains supply power supply state of uninterruptible power supply UPS
And the power state information of internal cell.Therefore, it can use master controller assistance, implement uninterruptible power supply UPS low battery
Under 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,
Then UPS is easy to cause to damage, adverse effect is also resulted in for the operation stability of UPS, therefore between being preferably able to have and preventing not
The safeguard measure of power-off source UPS cold-starting.
In low-temperature protection remote power-off control system of the utility model for uninterruptible power supply, power supply control branch is
For maintaining the continued power state of uninterruptible power supply in normal operation.And wherein, multiconductor electromagentic switching apparatus K1
Electromagnetic Control portion can design the electricity condition that it is controlled by temperature detect switch (TDS).For example, being opened as shown in Figure 1, temperature control can be designed
Closing B1 can be in electromagnetism of the environment temperature more than or equal to switching control multiconductor electromagentic switching apparatus K1 when presetting start-up temperature
Control unit obtains electric, and when concrete application, default start-up temperature may be configured as 5 DEG C, to be matched with the cold-starting of uninterruptible power supply UPS
Lower limit 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 utility model, temperature detect switch (TDS) B1 is cut
Change control multiconductor electromagentic switching apparatus K1 Electromagnetic Control portion obtain electric circuit design can be there are many form.For example, can be with
As shown in Figure 1, the Electromagnetic Control portion both ends of multiconductor electromagentic switching apparatus K1 to be directly connected in parallel to the first electricity of mains supply again
Between source and second source end, temperature detect switch (TDS) B1 is set in the parallel branch, in this way, temperature detect switch (TDS) B1 is big 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
Such circuit design mode is not yet stably reached when control cabinet interior environment temperature also fluctuates near default start-up temperature
When more than default start-up temperature value, it is possible to the electricity that temperature detect switch (TDS) B1 is connected and makes multiconductor electromagentic switching apparatus K1 can be triggered
Magnetic control portion obtains electric, triggering uninterruptible power supply UPS starting, so that uninterruptible power supply UPS does not obtain effective cold-starting and protects
Shield.
Therefore, as a kind of stability more preferably circuit design, as shown in Fig. 2, in the utility model for not
In the low-temperature protection remote power-off control system of uninterruptible power, the first power end including being connected in parallel on mains supply can also be designed
Temperature control branch and starting triggering branch between second source end；The temperature detect switch (TDS) B1 is arranged in temperature control branch, and temperature
Control branch further includes the Electromagnetic Control portion with the concatenated single-pole double throw electromagentic switching apparatus K3 of temperature detect switch (TDS) B1, 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 parallel connection
The Electromagnetic Control portion of delay electromagentic switching apparatus K2 between first power end and second source end, and the electromagnetism that is delayed is opened
The delay triggering end for closing device K2 Electromagnetic Control portion is connected to the second switch terminal of single-pole double throw electromagentic switching apparatus K3, hilted broadsword
The first switch terminal of double-throw electromagentic switching apparatus K3 is connected to the first power end of mains supply, single-pole double throw electromagnetic switch dress
The third switch terminal for setting K3 is connected to multiconductor electricity in power supply control branch by the switch portion for the electromagentic switching apparatus K2 that is delayed
Between the Electromagnetic Control portion of magnetic switching device K1 and the first switch portion of multiconductor electromagentic switching apparatus K1, and power supply control branch
The Electromagnetic Control portion of middle multiconductor electromagentic switching apparatus K1 is far from one of the first switch portion of multiconductor electromagentic switching apparatus K1
Terminal 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, the
One switch terminal is 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
When electricity condition, switch portion remains closed on state, when the delay triggering in the Electromagnetic Control portion of delay electromagentic switching apparatus K2
End from electricity condition variation be power failure state when, the switch portion of delay electromagentic switching apparatus K2 is disconnected immediately and is delayed by default
Conducting is re-closed after time.
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 above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to embodiment, those skilled in the art should understand that, it can be practical to this
Novel technical solution is modified or replaced equivalently, without departing from the objective and range of technical solutions of the utility model,
It should all cover in the scope of the claims of the utility model.
Claims (9)
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.
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| CN201822247962.3U CN209389693U (en) | 2018-12-29 | 2018-12-29 | Low-temperature protection remote power-off control system for uninterruptible power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109390911A (en) * | 2018-12-29 | 2019-02-26 | 重庆科凯前卫风电设备有限责任公司 | Low-temperature protection remote power-off control system and control method for uninterruptible power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109390911A (en) * | 2018-12-29 | 2019-02-26 | 重庆科凯前卫风电设备有限责任公司 | Low-temperature protection remote power-off control system and control method for uninterruptible power supply |
| CN109390911B (en) * | 2018-12-29 | 2024-02-20 | 重庆科凯前卫风电设备有限责任公司 | Low-temperature protection remote shutdown control system and control method for uninterruptible power supply |
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