CN209389770U - A kind of cold-starting control circuit of uninterruptible power supply - Google Patents
A kind of cold-starting control circuit of uninterruptible power supply Download PDFInfo
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- CN209389770U CN209389770U CN201822243039.2U CN201822243039U CN209389770U CN 209389770 U CN209389770 U CN 209389770U CN 201822243039 U CN201822243039 U CN 201822243039U CN 209389770 U CN209389770 U CN 209389770U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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Abstract
The utility model provides a kind of cold-starting control circuit of uninterruptible power supply; it between the first power end and second source end of mains supply by adding power supply control branch in parallel; and the on/off of power supply control branch is controlled by temperature detect switch (TDS); uninterruptible power supply can be effectively controlled just to be started under conditions of environment temperature is greater than or equal to default start-up temperature; the risk that uninterruptible power supply causes damage because of cold-starting is reduced, the starting to uninterruptible power supply in Wind turbines is realized and low-temperature protection control is provided；And, the structure design of its power supply control branch can form self-locking current supply circuit, environment temperature is avoided to fluctuate near default start-up temperature and uninterruptible power supply UPS is caused the operation such as frequently to power off, restart, and then avoid uninterruptible power supply UPS under the low temperature environment near default start-up temperature frequent starting and caused by damage, more favorably ensure the service life and job stability of uninterruptible power supply UPS.
Description
Technical field
The utility model relates to Control Technology of Wind Power Generation System field, in particular to a kind of low-temperature starting of uninterruptible power supply
Dynamic control circuit.
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 that electrical, microelectronics and power electronic element, the requirement to temperature are very high.For example, in control cabinet
Uninterruptible power supply (Uninterruptible Power Supply, referred to as UPS), obtained by 230VAC mains supply it is electric,
It is converted to 24VDC DC power supply and provides power supply to the electronic component as load, can not only guarantee that institute's band is negative when operating normally
The power quality of load can also be such that wind power generating set smoothly shuts down and save data when alternating current powers off；In addition, when power grid occurs
When low voltage crossing, UPS can umklappen be battery operated mode, using by its internal cell be institute's bringing onto load power supply, thus
Guarantee that institute's bringing onto load passes through low voltage crossing time-bands.Therefore, the stability of uninterruptible power supply UPS operation sends out wind-force
It is particularly important for motor group.However, being easy to cause UPS if starting uninterruptible power supply under the temperature environment lower than 5 DEG C
Damage；If UPS is continued to run under -20 DEG C of temperature environments below or the too low situation of battery capacity, it is likely that can damage
The internal battery for hurting UPS also results in adverse effect for the operation stability of UPS.
Therefore, a kind of device for the starting offer low-temperature protection control of uninterruptible power supply in Wind turbines is designed, it is right
Have great importance in the steady operation operation of Wind turbines.
Utility model content
Aiming at the above shortcomings existing in the prior art, the purpose of this utility model is to provide a kind of uninterruptible power supplies
Cold-starting control circuit provides low-temperature protection control to the starting to uninterruptible power supply in Wind turbines.
In order to achieve the above purposes, the technical solution adopted by the utility model is:
A kind of cold-starting control circuit of uninterruptible power supply, the first power end and second including being connected in parallel on mains supply
Mains-supplied branch between power end, for powering for uninterruptible power supply；
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 include concatenated multiconductor electromagentic switching apparatus Electromagnetic Control portion and multiconductor electromagentic switching apparatus first
Switch portion, and the second switch portion of multiconductor electromagentic switching apparatus is connected in the mains-supplied branch；Multiconductor electromagnetism is opened
Close device first switch portion and second switch portion the Electromagnetic Control portion of multiconductor electromagentic switching apparatus obtain it is electric after be closed and lead
It is logical；
It further include temperature detect switch (TDS), the temperature detect switch (TDS) can switch when environment temperature is greater than or equal to default start-up temperature
The Electromagnetic Control portion of control multiconductor electromagentic switching apparatus obtains electric.
In the cold-starting control circuit of above-mentioned uninterruptible power supply, preferably, the default starting temperature of the temperature detect switch (TDS)
Degree is set as 5 DEG C.
In the cold-starting control circuit of above-mentioned uninterruptible power supply, preferably, further including be connected in parallel on mains supply
Temperature control branch and starting triggering branch between one power end and second source end；
The temperature detect switch (TDS) is arranged in temperature control branch, and temperature control branch further includes and the concatenated single-pole double throw of temperature detect switch (TDS)
The Electromagnetic Control portion of electromagentic switching apparatus, temperature detect switch (TDS) switching when environment temperature is greater than or equal to default start-up temperature are led
Logical temperature control branch；
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 cold-starting control circuit of above-mentioned uninterruptible power supply, preferably, the delay electromagentic switching apparatus is pre-
If delay time is 10 ~ 20 seconds.
Compared with the prior art, the utility model has the following beneficial effects:
1, the cold-starting control circuit of the uninterruptible power supply of the utility model can effectively control uninterruptible power supply in ring
Border temperature is just started under conditions of being greater than or equal to default start-up temperature, is reduced uninterruptible power supply and is made because of cold-starting
At the risk of damage, realizes the starting to uninterruptible power supply in Wind turbines and low-temperature protection control is provided.
2, in the cold-starting control circuit of the uninterruptible power supply of the utility model, the structure of power supply control branch is designed
Self-locking current supply circuit can be formed, environment temperature is avoided and is fluctuated near default start-up temperature and lead to uninterruptible power supply
UPS such as frequently powers off, restarts at the operation, and then avoids uninterruptible power supply UPS under the low temperature environment near default start-up temperature
Frequent starting and caused by damage, more favorably ensure the service life and job stability of uninterruptible power supply UPS.
Detailed description of the invention
Fig. 1 is a kind of electricity of embodiment in the cold-starting control circuit embodiment one of the utility model uninterruptible power supply
Line structure figure.
Fig. 2 is another embodiment in the cold-starting control circuit embodiment one of the utility model uninterruptible power supply
Circuit structure diagram.
Fig. 3 is the circuit structure diagram of the cold-starting control circuit embodiment two of the utility model uninterruptible power supply.
Fig. 4 is the circuit structure diagram of the cold-starting control circuit embodiment three of the utility model uninterruptible power supply.
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:
As shown in Figure 1, the utility model provides a kind of cold-starting control circuit of uninterruptible power supply, including it is connected in parallel on
Mains-supplied branch between the first power end 230VAC-L and second source end 230VAC-N of mains supply, for between not
Power-off source UPS power supply；In the present invention, the position at the first power end and second source end can be interchanged, i.e. the first power supply
It can be 230VAC-L that end, which can be 230VAC-N, second source end, have no effect on the implementation of technical solutions of the utility model；This
It outside, 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 is automatically controlled
Branch processed include concatenated multiconductor electromagentic switching apparatus K1 Electromagnetic Control portion and multiconductor electromagentic switching apparatus K1 first
Switch portion, and the second switch portion of multiconductor electromagentic switching apparatus K1 is connected in the mains-supplied branch；Multiconductor electromagnetism
The first switch portion and second switch portion of switching device K1 the Electromagnetic Control portion of multiconductor electromagentic switching apparatus K1 obtain it is electric after
Closure conducting；It further include temperature detect switch (TDS) B1, the temperature detect switch (TDS) B1 can be greater than or equal to default start-up temperature in environment temperature
When switching control multiconductor electromagentic switching apparatus K1 Electromagnetic Control portion obtain it is electric.When concrete application, it is settable to preset start-up temperature
It is 5 DEG C, to be matched with the cold-starting lower limit temperature of uninterruptible power supply UPS.
Since in this way, in the case where uninterruptible power supply UPS non-electrifying startup, environment temperature is lower than 5 DEG C in control cabinet
Default start-up temperature when, the Electromagnetic Control portion that temperature detect switch (TDS) B1 will not control switching control multiconductor electromagentic switching apparatus K1 obtains
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 cold-starting control circuit of the uninterruptible power supply of the utility model, temperature detect switch (TDS) B1 switching control multiconductor
The Electromagnetic Control portion of electromagentic switching apparatus K1 obtains electric circuit design can be there are many form.For example, can be as shown in Figure 1, straight
Connect the first power end and the second electricity that the Electromagnetic Control portion both ends of multiconductor electromagentic switching apparatus K1 are connected in parallel to mains supply again
Between source, temperature detect switch (TDS) B1 is set in the parallel branch, is preset in this way, temperature detect switch (TDS) B1 is greater than or equal in environment temperature
When start-up temperature after switched conductive, the Electromagnetic Control portion of multiconductor electromagentic switching apparatus K1 can obtain electric；But such circuit is set
Meter mode not yet stably reaches default start-up temperature when control cabinet interior environment temperature also fluctuates near default start-up temperature
When being worth above, it is possible to temperature detect switch (TDS) B1 conducting can be triggered and the Electromagnetic Control portion of multiconductor electromagentic switching apparatus K1 is obtained
Electricity, 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, in the uninterrupted of the utility model
In the cold-starting control circuit of power supply, the first power end including being connected in parallel on mains supply and second source end can also be designed
Between temperature control branch and starting triggering branch；The temperature detect switch (TDS) B1 is arranged in temperature control branch, and temperature control branch further includes
With the Electromagnetic Control portion of the concatenated single-pole double throw electromagentic switching apparatus K3 of temperature detect switch (TDS) B1, the temperature detect switch (TDS) B1 is in environment temperature
Switched conductive temperature control branch when more than or equal to default start-up temperature；The starting triggering branch includes being connected in parallel on first electricity
The Electromagnetic Control portion of delay electromagentic switching apparatus K2 between source and second source end, and the electromagentic switching apparatus K2 electromagnetism that is delayed
The delay triggering end of control unit is connected to the second switch terminal of single-pole double throw electromagentic switching apparatus K3, single-pole double throw electromagnetic switch
The first switch terminal of device K3 is connected to the first power end of mains supply, and the third of single-pole double throw electromagentic switching apparatus K3 is opened
It closes terminal and multiconductor electromagentic switching apparatus K1 in power supply control branch is connected to by the switch portion for the electromagentic switching apparatus K2 that is delayed
Electromagnetic Control portion and multiconductor electromagentic switching apparatus K1 first switch portion between, and multiconductor electromagnetism in power supply control branch
One terminal in first switch portion of the Electromagnetic Control portion of switching device K1 far from multiconductor electromagentic switching apparatus K1 is connected to city
The second source end of power supply；When the Electromagnetic Control portion power loss of single-pole double throw electromagentic switching apparatus K3, first switch terminal with
The conducting of second switch terminal, when the Electromagnetic Control portion of single-pole double throw electromagentic switching apparatus K3 obtains electric, first switch terminal and the
The conducting of three switch terminals；It is described delay electromagentic switching apparatus K2 Electromagnetic Control portion delay triggering end be electricity condition when,
Switch portion remains closed on state, when delay electromagentic switching apparatus K2 Electromagnetic Control portion delay triggering end from electricity condition
When variation is power failure state, the switch portion of delay electromagentic switching apparatus K2 is disconnected immediately and is closed again after default delay time
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.
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, controller in master controller, that is, control cabinet, usually PLC is controlled
Device (Programmable Logic Controller, programmable logic controller (PLC)) is powered defeated by uninterruptible power supply UPS
The electrical circuit power supply that high-voltage end 24VDC and low-pressure end 0VDC out is formed 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, on the basis of the cold-starting control circuit scheme of the uninterruptible power supply described in above-described embodiment one,
As shown in figure 3, can also further increase the remote power-off enable signal output end " UPS_ that design is connected to master controller
SD " and uninterruptible power supply UPS enables branch for the remote power-off between the low-pressure end of electricity output, and the remote power-off enables branch
On be connected with the Electromagnetic Control portion of the first electromagentic switching apparatus K4；The remote power-off enable signal output end of the master controller
" UPS_SD " reaches default power-off duration in mains supply power-off or uninterruptible power supply UPS is electric under mains supply off-position
Amount exports low level when being less than default electricity limit value, otherwise exports high level；Meanwhile increasing design and being connected to uninterruptible power supply
UPS triggers branch, the shutdown for the shutdown between the high-voltage end of electricity output and the shutdown control terminal " SD " of uninterruptible power supply UPS
Triggering branch includes the switch portion of concatenated first electromagentic switching apparatus K4 and the third switch of multiconductor electromagentic switching apparatus K1
Portion；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
The Electromagnetic Control portion of electromagentic switching apparatus K1 obtain it is electric after, third switch portion is switched to disconnection by normal closure state；It is described not between
When the shutdown control terminal " SD " of power-off source UPS obtains electric, uninterruptible power supply UPS starts to execute power-off operation.
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
After remote power-off, if mains supply restores electricity, under conditions of temperature environment allows, power supply control branch also can be by
Control is connected again, restores the power supply to uninterruptible power supply UPS, so that uninterruptible power supply UPS is restarted.
Embodiment three:
During normal work after uninterruptible power supply starting, if environment temperature is reduced to -30 DEG C ~ -20 DEG C even
Hereinafter, uninterruptible power supply UPS and PLC controller continue working under conditions of excessive low temperature, it is possible to the built-in of UPS can be damaged
Battery and PLC controller, therefore be preferably able to have and prevent uninterruptible power supply UPS and PLC controller under excessive low temperature environment
Continue the low-temperature protection measure of long-play.
In view of this, on the basis of the cold-starting control circuit scheme of the uninterruptible power supply described in above-described embodiment two,
As shown in figure 4, further the first of the second multiconductor electromagentic switching apparatus K5 of series connection can also be increased in power supply control branch
Switch portion；Meanwhile the second electromagentic switching apparatus K6 is also in series in the power supply line powered to master controller of uninterruptible power supply UPS
Switch portion, uninterruptible power supply UPS is for being also parallel with low-temperature protection controlling brancher, institute between the high-voltage end and low-pressure end of electricity output
Stating low-temperature protection controlling brancher includes that the Electromagnetic Control portion of concatenated second electromagentic switching apparatus K6 and the second multiconductor electromagnetism are opened
Close the second switch portion of device K5；The Electromagnetic Control portion of second electromagentic switching apparatus K6 obtain it is electric after, switch portion closure conducting；This
Outside, also increase low-temperature protection enable signal output end " UPS_RESET " and uninterruptible power supply UPS that setting is connected to master controller
Branch is enabled for the low-temperature protection between the low-pressure end of electricity output, the low-temperature protection enables branch road and is connected with the second multiconductor
The Electromagnetic Control portion of electromagentic switching apparatus K5；The low-temperature protection enable signal output end " UPS_RESET " of the master controller exists
High level is exported when environment temperature is lower than default protection temperature, otherwise exports low level；The second multiconductor electromagnetic switch dress
Set K5 Electromagnetic Control portion obtain it is electric after, first switch portion and second switch close and are switched to disconnection by normal closure state.Wherein,
The default protection temperature is lower than the cold-starting temperature of uninterruptible power supply, 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.
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 continue keep power failure state so that shutdown triggering branch in multiconductor electromagentic switching apparatus K1 third switch portion after
Normal closure state is held in continuation of insurance, so that uninterruptible power supply UPS is for the high-voltage end of electricity output and the shutdown control terminal of uninterruptible power supply UPS
Continue between " SD " keep access, the shutdown control terminal " SD " of uninterruptible power supply UPS persistently it is electric so that uninterruptible power supply UPS
It maintains to execute power-off operation, until uninterruptible power supply UPS completes shutdown；Stop after uninterruptible power supply UPS shutdown to master controller
Power supply, master controller power down shutdown are achieved in the low-temperature protection shutdown control of uninterruptible power supply UPS and master controller.
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.
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 (4)
1. a kind of cold-starting control circuit of uninterruptible power supply, the first power end and the second electricity including being connected in parallel on mains supply
Mains-supplied branch between source, for powering for uninterrupted power supply (ups) Unity；It is characterized by:
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 is automatically controlled
Branch processed includes Electromagnetic Control portion and the multiconductor electromagentic switching apparatus (K1) of concatenated multiconductor electromagentic switching apparatus (K1)
First switch portion, and the second switch portion of multiconductor electromagentic switching apparatus (K1) is connected in the mains-supplied branch；More touchings
The first switch portion and second switch portion of point electromagentic switching apparatus (K1) are in the electromagnetism control of multiconductor electromagentic switching apparatus (K1)
Portion processed obtain it is electric after be closed conducting；
It further include temperature detect switch (TDS) (B1), the temperature detect switch (TDS) (B1) can be when environment temperature be greater than or equal to default start-up temperature
The Electromagnetic Control portion of switching control multiconductor electromagentic switching apparatus (K1) obtains electric.
2. the cold-starting control circuit of uninterruptible power supply according to claim 1, which is characterized in that the temperature detect switch (TDS)
(B1) default start-up temperature is set as 5 DEG C.
3. the cold-starting control circuit of uninterruptible power supply according to claim 1, which is characterized in that further include being connected in parallel on city
Temperature control branch and starting triggering branch between the first power end and second source end of power supply；
The temperature detect switch (TDS) (B1) is arranged in temperature control branch, and temperature control branch further includes and temperature detect switch (TDS) (B1) concatenated hilted broadsword
The Electromagnetic Control portion of double-throw electromagentic switching apparatus (K3), the temperature detect switch (TDS) (B1) are greater than or equal to default starting in environment temperature
Switched conductive temperature control branch when 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.
4. the cold-starting control circuit of uninterruptible power supply according to claim 3, which is characterized in that the delay electromagnetism is opened
The default delay time for closing device (K2) is 10 ~ 20 seconds.
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| CN201822243039.2U CN209389770U (en) | 2018-12-29 | 2018-12-29 | A kind of cold-starting control circuit of 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 |
| CN110630439A (en) * | 2019-09-24 | 2019-12-31 | 重庆科凯前卫风电设备有限责任公司 | Safety control system and control method of yaw motor |
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2018
- 2018-12-29 CN CN201822243039.2U patent/CN209389770U/en active Active
Cited By (3)
| 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 |
| CN110630439A (en) * | 2019-09-24 | 2019-12-31 | 重庆科凯前卫风电设备有限责任公司 | Safety control system and control method of yaw motor |
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