CN107317390A - Active air-cooled control system secondary circuit principle wiring standard is designed - Google Patents
Active air-cooled control system secondary circuit principle wiring standard is designed Download PDFInfo
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- CN107317390A CN107317390A CN201710720313.8A CN201710720313A CN107317390A CN 107317390 A CN107317390 A CN 107317390A CN 201710720313 A CN201710720313 A CN 201710720313A CN 107317390 A CN107317390 A CN 107317390A
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- 238000001816 cooling Methods 0.000 claims abstract description 49
- 230000001934 delay Effects 0.000 claims abstract description 45
- 238000012546 transfer Methods 0.000 claims abstract description 38
- 238000012544 monitoring process Methods 0.000 claims description 42
- 230000001012 protector Effects 0.000 claims description 29
- 230000005611 electricity Effects 0.000 claims description 25
- 230000007257 malfunction Effects 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 abstract description 6
- 230000007774 longterm Effects 0.000 abstract description 6
- 238000007689 inspection Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 10
- 238000013461 design Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 4
- 230000004224 protection Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000819 phase cycle Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stand-By Power Supply Arrangements (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The present invention relates to a kind of main transfer wind cooling system secondary circuit control device and air cooler control system, wherein, main transfer wind cooling system secondary circuit control device, including connect current power supply, the converting unit of back-up power source；Also include the first on-off control unit, the first delays time to control unit, the second on-off control unit, the second delays time to control unit and double-direction control unit；The present invention is improved and alarm signal optimized perfect for the long-term powered reliability for causing dual power supply switching during coil breakage of relay coil.Based on the present invention, in practice, two-way power supply can be achieved main power supply is arbitrarily used as by change-over switch selection all the way, another road power supply is used as stand-by power supply.Meanwhile, after main power supply failover to stand-by power supply, in the case of no inspection processing main power supply failure, auto-returned main power supply (hauling oneself willingly into not runback), so as to avoid putting into trouble power again, does not repeat to switch.
Description
Technical field
The present invention relates to active air-cooled control field, more particularly to active air-cooled control system secondary circuit principle wiring
Standard is designed.
Background technology
The capacity of main transformer is general than larger, and requires that the reliability of work is high.Although main transformer fault rate is not
Height, but once break down and will result in great loss.It is light then be likely to result in equipment fault, it is heavy then the condition of a fire can be triggered,
Jeopardize normal transportation safety.Conventional art mainly uses temperature during air cooling system reduction main transformer working condition.
And it is current, active air-cooled control system does not formulate relevant criterion, and each producer's air cooling system difference is larger, most of
To realize based on function, security, the reliability run to air cooling system consider inadequate, and the reliable and stable operation to main transformer is brought
Larger hidden danger.Traditional wind cooling control box secondary circuit can not largely realize Dual-power automatic switching function, work as primary power cource
When dead electricity or control loop failure, wind cooling control box loop can not automatically switch to stand-by power supply powering mode.Part can
Traditional wind cooling control box secondary circuit of Dual-power automatic switching function is realized, switching reliability is not enough, exists and transmits and leak by mistake
The phenomenon transmitted.
The content of the invention
Based on this, it is necessary to the problem of reliability is not enough during for traditional wind cooling control box secondary circuit Switching power, carry
For a kind of design of active air-cooled control system secondary circuit principle wiring standard.
To achieve these goals, on the one hand, the embodiments of the invention provide a kind of main transfer wind cooling system secondary circuit control
Device processed, including connect current power supply, the converting unit of back-up power source；Also include the first on-off control unit, the
One delays time to control unit, the second on-off control unit, the second delays time to control unit and double-direction control unit；
First on-off control unit, the input of the first delays time to control unit pass through the current power supply electricity of converting unit connection
Source, output end is grounded by double-direction control unit；Second on-off control unit, the input of the second delays time to control unit are by turning
Unit connection back-up power source is changed, output end is grounded by double-direction control unit；
Double-direction control unit is when current power supply breaks down, and conducting is controlled with the second break-make unit, with the second delay
The path of unit processed；Back-up power source is powered by change-over switch to the second delays time to control unit, so that the second delays time to control
Unit control double-direction control unit turns on the active air-cooled current supply circuit of back-up power source.In a specific embodiment,
Back-up power source is single by changing when current power supply, back-up power source switch to normal power supply by malfunction
Member is powered to the second delays time to control unit, so that the second delays time to control unit postpones stand-by power supply in default delay time section
The power supply of power supply lags behind the power supply of current power supply；
Current power supply leads to when current power supply, back-up power source switch to normal power supply by malfunction
Cross converting unit to power to the first on-off control unit, so that the control double-direction control unit conducting of the first on-off control unit is current
The active air-cooled current supply circuit of power supply, disconnects the active air-cooled current supply circuit of back-up power source.
In a specific embodiment, in addition to the first power supply protector, second source protector；
First power supply protector is connected between converting unit and current power supply；Second source protector, which is connected to, to be turned
Change between unit and back-up power source.
In a specific embodiment, converting unit is change-over switch.
In a specific embodiment, change-over switch includes the first path, alternate path, third path and four-way
Road；
First path, the first end of alternate path connect current power supply, the first path by the first power supply protector
The second end connect the input of the first on-off control unit, the second end of alternate path connects the defeated of the first delays time to control unit
Enter end；
Third path, the first end of fourth passage connect back-up power source, third path by second source protector
The second end connect the second on-off control unit input, the second end of fourth passage connects the input of the second delays time to control unit
End.
In a specific embodiment, the first on-off control unit is the first power monitoring relay；Second break-make control
Unit processed is second source supervisory relay；
The stationary contact of first power monitoring relay connects the second end of the first path, movable contact connection double-direction control list
Member；The first end of the coil of first power monitoring relay connects the first end of alternate path, the second end ground connection；
The stationary contact of second source supervisory relay connects the second end of third path, movable contact connection double-direction control list
Member；The first end of the coil of second source supervisory relay connects the first end of fourth passage, the second end ground connection.
In a specific embodiment, double-direction control unit includes the first main supply relay, the second main power supply relay
Device；
The first end of the coil of first main supply relay connects the movable contact of the first power monitoring relay, first respectively
Delays time to control unit, the second end connects the stationary contact of the second main supply relay；The movable contact ground connection of first main supply relay；
The first end of the coil of second main supply relay connects the movable contact of second source supervisory relay, second respectively
Delays time to control unit, the second end connects the stationary contact of the first main supply relay；The movable contact ground connection of second main supply relay.
In a specific embodiment, the first delays time to control unit is very first time relay；Second delays time to control list
Member is second time relay；
The stationary contact of very first time relay connects the second end of alternate path, the coil of very first time relay respectively
First end, movable contact connects the movable contact of the first power monitoring relay；The second end connection of the coil of very first time relay
Second end of the coil of the first main supply relay；
The stationary contact of second time relay connects the second end of fourth passage, the coil of second time relay respectively
First end, movable contact connects the movable contact of second source supervisory relay；The second end connection of the coil of second time relay
Second end of the coil of the second main supply relay.
In a specific embodiment, in the first on-off control unit, the second on-off control unit, double-direction control unit
Any one sends the alarm signal of corresponding Switching power when breaking down.
On the other hand, the embodiment of the present invention additionally provides a kind of air cooler control system,
Including main transfer wind cooling system secondary circuit control device；Also include some blower fan groups；
Blower fan group passage time relay connects the output end of main transfer wind cooling system secondary circuit control device.
The invention has the advantages that and beneficial effect：
Active air-cooled control system secondary circuit principle wiring standard design of the present invention, can be directed to the long-term band of relay coil
Electricity causes the reliability that dual power supply switches during coil breakage to be improved and optimized to alarm signal perfect.Based on this hair
Bright, air cooler control system of the invention can be achieved two-way power supply and arbitrarily made all the way by change-over switch selection in practice
For main power supply, another road power supply is used as stand-by power supply.Meanwhile, after main power supply failover to stand-by power supply, do not examining
Investigate and prosecute in the case of managing main power supply failure, not auto-returned main power supply (hauling oneself willingly into not runback), so as to avoid putting into again
Trouble power, repeats to switch.
Brief description of the drawings
Fig. 1 is the structured flowchart of main transfer wind cooling system secondary circuit control device of the present invention；
Fig. 2 is the circuit theory diagrams of main transfer wind cooling system secondary circuit control device of the present invention；
Fig. 3 is the protector mechanism block diagram of main transfer wind cooling system secondary circuit control device of the present invention；
Fig. 4 is the signal circuit schematic diagram of main transfer wind cooling system secondary circuit control device of the present invention；
Fig. 5 is the fan circuit schematic diagram of air cooler control system of the present invention.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give the preferred embodiment of the present invention.But, the present invention can be realized in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose that these embodiments are provided be make to the disclosure more it is thorough comprehensively.
It should be noted that when an element is considered as " connection " another element, it can be directly to separately
One element and it is in combination be integrated, or may be simultaneously present centering elements.Term as used herein " installation ", " one
End ", " other end " and similar statement are for illustrative purposes only.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more phases
The arbitrary and all combination of the Listed Items of pass.
One concrete application scene of active air-cooled control system secondary circuit principle wiring standard design of the present invention：
Transformer is highly important electrical equipment in power system, once break down can to system normal power supply and
Safe operation brings serious influence.Current main transformer is largely using air-cooled, and the safe operation of air cooling system is to ensure electricity
Power transformer normal output and the important component of power system security stable operation.
Currently, air cooler control system lacks relevant criterion, and device category is various, almost standby without spare unit, operational defect
Long-term existence, the defect elimination cycle is very long, and the normal operation to main transformer has a negative impact.Come from the running situation of air cooler control system
See, find the relay of these air cooler control systems, contactor is easily burnt out, and air switch is also usually damaged, using opening automatically
Air cooler control system can not be according to the reliably startup etc. of main transformer operating condition during flowing mode, and air cooler control system reliability is not high to ask
Inscribe long-term existence.And traditional wind cooling control box secondary circuit can not largely realize Dual-power automatic switching function, when primary
When power loss or control loop failure, wind cooling control box loop can not automatically switch to stand-by power supply powering mode.Portion
Divide traditional wind cooling control box secondary circuit of achievable Dual-power automatic switching function, switching reliability is not enough, exists and transmits by mistake
The phenomenon transmitted with leakage.
Active air-cooled control system secondary circuit principle wiring standard design of the present invention, can be directed to the long-term band of relay coil
Electricity causes the reliability that dual power supply switches during coil breakage to be improved and optimized to alarm signal perfect.Based on this hair
It is bright, in practice, two-way power supply can be achieved main power supply, another road power supply are arbitrarily used as by change-over switch selection all the way
It is used as stand-by power supply.Meanwhile, after main power supply failover to stand-by power supply, without the feelings for checking processing main power supply failure
Under condition, auto-returned main power supply (hauling oneself willingly into not runback), so as to avoid putting into trouble power again, does not repeat to switch.
In order to solve the problem of reliability is not enough during traditional wind cooling control box secondary circuit Switching power, the invention provides
A kind of main transfer wind cooling system secondary circuit control device specific embodiment 1, such as Fig. 1 are main transfer wind cooling system secondary circuit of the present invention
The structured flowchart of control device, as described in Figure 1, includes the invention provides a kind of main transfer wind cooling system secondary circuit control device
Connect the converting unit 160 of current power supply, back-up power source；Also include the first on-off control unit 110, the first delay
Control unit 120, the second on-off control unit 140, the second delays time to control unit 150 and double-direction control unit 130；
First on-off control unit 110, the input of the first delays time to control unit 120 are supplied by the way that converting unit connection is current
Power supply, output end is grounded by double-direction control unit 130；Second on-off control unit 140, the second delays time to control unit 150
Input back-up power source is connected by converting unit 160, output end is grounded by double-direction control unit 130；
Double-direction control unit 130 is when current power supply breaks down, and conducting is delayed with the second break-make unit, with second
The path of control unit 150；Back-up power source is powered by change-over switch 160 to the second delays time to control unit 150, so that the
Two delays time to control units 150 control double-direction control unit 130 turns on the active air-cooled current supply circuit of back-up power source.
It should be noted that the first on-off control unit, the second on-off control unit control respectively converting unit with it is two-way
The break-make of control unit；First delays time to control unit, the second delays time to control unit possess delayed startup function；Double-direction control unit
Can control respectively the active air-cooled current supply circuit of current power supply, the active air-cooled current supply circuit of back-up power source it is logical
It is disconnected；Converting unit can change the active-standby relation of current power supply and back-up power source, main transfer wind cooling system secondary returning
Road control device be according to.
Specifically, Fig. 2 is the circuit theory diagrams of main transfer wind cooling system secondary circuit control device of the present invention, such as Fig. 2 institutes
Show, converting unit is change-over switch SA1, the first on-off control unit is power monitoring relay KA1, the first delays time to control unit
For time relay sj 1, double-direction control unit includes main supply relay KM1 and main supply relay KM2, the control of the second break-make
Unit is power monitoring relay KA2, and the first delays time to control unit is time relay sj 2, time relay sj 1 and time after
The delay duration that electrical equipment SJ2 is set is 10S, and current power supply, which breaks down, can include main power supply relay KM1 coils
Broken string, power monitoring relay KA1 coil breakages or current power supply dead electricity itself, back-up power source breaks down can be with
Lost in itself including main power supply relay KM2 coil breakages, power monitoring relay KA2 coil breakages or back-up power source
Electricity.
When current power supply is set as primary power cource, when back-up power source is set as stand-by power supply, change-over switch
SA1 is transformed into SA1：1-2 and SA1：5-6 nodes are turned on, SA1：3-4 and SA1：7-8 nodes disconnect.As main supply relay KM1
Coil damaged because being electrified for a long time after, main supply relay KM1：1-2、KM1：3-4 and KM1：5-6 nodes disconnect, main power supply
Relay KM1：15-16 nodes are closed, and because change-over switch SA1：5-6 nodes are turned on, the coil band of time relay sj 2
Electricity, time relay sj 2：15-18 node delay 10S close, then main supply relay KM2 coil is powered, it is main power supply after
Electrical equipment KM2：1-2、KM2：3-4 and KM2：5-6 nodes are closed, main supply relay KM2：15-16 nodes disconnect, stand-by power supply electricity
The active air-cooled current supply circuit in source is connected.
Moreover, after current power supply is switched to back-up power source, processing main electricity failure is checked no
In the case of, auto-returned main electricity, so as to avoid putting into trouble power again, does not repeat to switch.
In another embodiment, Fig. 2 is the circuit theory diagrams of main transfer wind cooling system secondary circuit control device of the present invention,
As shown in Fig. 2 current power supply is set as primary power cource, and when back-up power source is set as stand-by power supply, change-over switch
SA1 is transformed into SA1：1-2 and SA1：5-6 nodes are turned on, SA1：3-4 and SA1：7-8 nodes disconnect.When power monitoring relay
After KA1 coil is damaged because being electrified for a long time, power monitoring relay KA1：67-68 nodes disconnect, main supply relay KM1's
Coil losing electricity, main supply relay KM1：15-16 nodes are closed, because change-over switch SA1：5-6 nodes are turned on, the time relay
SJ2 coil is powered, time relay sj 2：15-18 node delay 10S is closed, then main supply relay KM2 coil band
Electricity, main supply relay KM2：1-2、KM2：3-4 and KM2：5-6 nodes are closed, main supply relay KM2：15-16 nodes break
Open, the active air-cooled current supply circuit of back-up power source is connected.
Active air-cooled control system secondary circuit principle wiring standard design of the present invention, can be directed to the long-term band of relay coil
Electricity causes the reliability that dual power supply switches during coil breakage to be improved and optimized to alarm signal perfect.Based on this hair
It is bright, in practice, two-way power supply can be achieved main power supply, another road power supply are arbitrarily used as by change-over switch selection all the way
It is used as stand-by power supply.Meanwhile, after main power supply failover to stand-by power supply, without the feelings for checking processing main power supply failure
Under condition, auto-returned main power supply (hauling oneself willingly into not runback), so as to avoid putting into trouble power again, does not repeat to switch.
In a specific embodiment, back-up power source is in current power supply, back-up power source by failure
When state switchs to normal power supply, powered by converting unit to the second delays time to control unit, so that the second delays time to control unit exists
In default delay time section, the power supply of delay back-up power source lags behind the power supply of current power supply；
Current power supply leads to when current power supply, back-up power source switch to normal power supply by malfunction
Cross converting unit to power to the first on-off control unit, so that the control double-direction control unit conducting of the first on-off control unit is current
The active air-cooled current supply circuit of power supply, disconnects the active air-cooled current supply circuit of back-up power source.
Specifically, Fig. 2 is the circuit theory diagrams of main transfer wind cooling system secondary circuit control device of the present invention, such as Fig. 2 institutes
Show, current power supply is set as primary power cource, when back-up power source is set as stand-by power supply, change-over switch SA1 conversions
To SA1：1-2 and SA1：5-6 nodes are turned on, SA1：3-4 and SA1：7-8 nodes disconnect.Current power supply and stand-by power supply electricity
When source switchs to normal power supply by malfunction simultaneously, current power supply and back-up power source simultaneously by failure when, main power supply
Relay KM1：15-16 nodes and main supply relay KM2：15-16 nodes are in closure state.Due to change-over switch SA1：5-
6 nodes are turned on and main supply relay KM1：15-16 nodes are closed, and the coil of time relay sj 2 is powered, the time relay
SJ2：15-18 node delay 10S is closed so that back-up power source lags behind current power supply and powered, in the time relay
SJ2：During 15-18 node delay 10S is closed, power monitoring relay KA1 coil is powered, power monitoring relay KA1：
67-68 nodes are closed, due to main supply relay KM2：15-16 nodes are closed, and main supply relay KM1 coil is powered,
Main supply relay KM1：1-2、KM2：3-4 and KM2：5-6 nodes are closed, main supply relay KM1：15-16 nodes disconnect, and lead
Lead to the active air-cooled current supply circuit of current power supply, disconnect the active air-cooled current supply circuit when back-up power source.
The dual power supply switching circuit of the present invention, the master in main power supply decompression, broken string (phase shortage) or main power supply loop
When supply relay coil breakage causes the main power supply to disconnect, automatically switch to stand-by power supply and power, be simultaneously emitted by alarm signal.
In a specific embodiment, Fig. 3 is the protector machine of main transfer wind cooling system secondary circuit control device of the present invention
Structure block diagram, as described in Figure 3, main transfer wind cooling system secondary circuit control device of the present invention, in addition to the first power supply protector, second
Power supply protector；
First power supply protector is connected between converting unit and current power supply；Second source protector, which is connected to, to be turned
Change between unit and back-up power source.
Specifically, as shown in Fig. 2 the first power supply protector is power supply protector KV1, second source protector is power supply
Protector KV2.When breaking occurs in current power supply or phase sequence is reversed, power supply protector KV1：15-18 nodes disconnect；When
When breaking occurs in back-up power source or phase sequence is reversed, power supply protector KV2：15-18 nodes break.And when air-cooled control system
When system switches power supply to trouble-free back-up power source and powered, power monitoring relay KA1:67-68 nodes or power monitoring
Relay KA2:67-68 nodes send alarm signal, and the present invention can pass through the first power supply protector and second source protector
Realize the function of protection fan electromotor.
Power supply protector in the present invention is when power supply breaks down, it is ensured that the safety of air cooler control system.Alarm
Signal is avoided causes the problems such as fan electromotor damages or is unable to ventilation and heat because power supply goes wrong.
In a specific embodiment, main transfer wind cooling system secondary circuit control device of the present invention, converting unit is to turn
Switch is changed, change-over switch includes the first path, alternate path, third path and fourth passage；
First path, the first end of alternate path connect current power supply, the first path by the first power supply protector
The second end connect the input of the first on-off control unit, the second end of alternate path connects the defeated of the first delays time to control unit
Enter end；
Third path, the first end of fourth passage connect back-up power source, third path by second source protector
The second end connect the second on-off control unit input, the second end of fourth passage connects the input of the second delays time to control unit
End.
It should be noted that as shown in Fig. 2 the first path is change-over switch SA1：1-2 nodes, alternate path is opened for conversion
Close SA1：3-4 nodes, third path is change-over switch SA1：7-8 nodes, the first path is change-over switch SA1：5-6 nodes.The
The first end of one path and the second end are respectively SA1:1 and SA1:2, the first end of alternate path and the second end are respectively SA1:3
And SA1:4, the first end of third path and the second end are respectively SA1:7 and SA1:8, the first end of fourth passage and the second end are divided
Wei not SA1:5 and SA1:6.
Specifically, change-over switch SA1：1-2 nodes and SA1：SA1 in 3-4 nodes：1 and SA1：3 connection power protections
Device KV1：15-18, SA1：2 connection power monitoring relay KA1:The KA1 of 67-68 nodes:67, SA1：3 Connection Time relays
SJ1:The SJ1 of 15-18 nodes:15；
Change-over switch SA1：7-8 nodes and SA1：SA1 in 5-6 nodes：7 and SA1：5 connection power supply protector KV2：15-
18, SA1：8 connection power monitoring relay KA2:The KA1 of 67-68 nodes:67, SA1：6 Connection Time relay SJ2:15-18
The SJ2 of node:15.
Based on the present invention, in practice, two-way power supply can be achieved master is arbitrarily used as by change-over switch selection all the way
Power supply source, another road power supply is used as stand-by power supply.Meanwhile, after main power supply failover to stand-by power supply, in no inspection department
In the case of managing main power supply failure, not auto-returned main power supply (hauling oneself willingly into not runback), so as to avoid putting into failure again
Power supply, repeats to switch.
In a specific embodiment, main transfer wind cooling system secondary circuit control device of the present invention, the control of the first break-make
Unit is the first power monitoring relay；Second on-off control unit is second source supervisory relay；
The stationary contact of first power monitoring relay connects the second end of the first path, movable contact connection double-direction control list
Member；The first end of the coil of first power monitoring relay connects the first end of alternate path, the second end ground connection；
The stationary contact of second source supervisory relay connects the second end of third path, movable contact connection double-direction control list
Member；The first end of the coil of second source supervisory relay connects the first end of fourth passage, the second end ground connection.
It should be noted that as shown in Fig. 2 the first power monitoring relay is power monitoring relay KA1, second source
Supervisory relay is power monitoring relay KA2, and the stationary contact and movable contact of the first power monitoring relay are respectively KA1：67
And KA1:68, the stationary contact and movable contact of second source supervisory relay are respectively KA2：67 and KA2:68.
Specifically, as shown in Fig. 2 power monitoring relay KA1：The KA1 of 67-68 nodes：What 67 connection conversions were opened
SA1：The SA1 of 1-2 nodes：2, KA1：The A1 ends of the 68 main supply relay KM1 of connection coil, power monitoring relay KA1's
The end of loop A 1 connects KV1：15-18, A2 end are grounded；
Power monitoring relay KA2：The KA2 of 67-68 nodes：The SA1 that 67 connection conversions are opened：The SA1 of 7-8 nodes：8,
KA2：The A1 ends of the 68 main supply relay KM2 of connection coil, the power monitoring relay KA2 end of loop A 1 connection KV2：15-
18, A2 ends are grounded.
Based on the present invention, in practice, two-way power supply can be achieved master is arbitrarily used as by change-over switch selection all the way
Power supply source, another road power supply is used as stand-by power supply.Meanwhile, after main power supply failover to stand-by power supply, in no inspection department
In the case of managing main power supply failure, not auto-returned main power supply (hauling oneself willingly into not runback), so as to avoid putting into failure again
Power supply, repeats to switch
In a specific embodiment, main transfer wind cooling system secondary circuit control device of the present invention, double-direction control unit
Including the first main supply relay, the second main supply relay；
The first end of the coil of first main supply relay connects the movable contact of the first power monitoring relay, first respectively
Delays time to control unit, the second end connects the stationary contact of the second main supply relay；The movable contact ground connection of first main supply relay；
The first end of the coil of second main supply relay connects the movable contact of second source supervisory relay, second respectively
Delays time to control unit, the second end connects the stationary contact of the first main supply relay；The movable contact ground connection of second main supply relay.
It should be noted that as shown in Fig. 2 the first main supply relay be main supply relay KM1, second it is main power supply after
Electrical equipment is main supply relay KM1, and the stationary contact and movable contact of the first main supply relay are main supply relay KM1 respectively：
15 and KM1：16, the stationary contact and movable contact of the second main supply relay are main supply relay KM1 respectively：15 and KM1：16.
Specifically, the main supply relay KM1 end of loop A 1 connects power monitoring electrical relay KA1 respectively:67-68 is saved
The KA1 of point：68th, time relay sj 1：The SJ1 of 15-18 nodes：18, A2 ends connect main supply relay KM2：15-16 nodes
KM2：15, main supply relay KM2：The KM2 of 15-16 nodes：16 ground connection；
The main supply relay KM2 end of loop A 1 connects power monitoring electrical relay KA2 respectively:The KA2 of 67-68 nodes：
68th, time relay sj 2：The SJ1 of 15-18 nodes：18, A2 ends connect main supply relay KM1：The KM1 of 15-16 nodes：15,
Main supply relay KM1：The KM2 of 15-16 nodes：16 ground connection.
Based on the present invention, in practice, two-way power supply can be achieved master is arbitrarily used as by change-over switch selection all the way
Power supply source, another road power supply is used as stand-by power supply.Meanwhile, after main power supply failover to stand-by power supply, in no inspection department
In the case of managing main power supply failure, not auto-returned main power supply (hauling oneself willingly into not runback), so as to avoid putting into failure again
Power supply, repeats to switch.
In a specific embodiment, main transfer wind cooling system secondary circuit control device of the present invention, the first delays time to control
Unit is very first time relay；Second delays time to control unit is second time relay；
The stationary contact of very first time relay connects the second end of alternate path, the coil of very first time relay respectively
First end, movable contact connects the movable contact of the first power monitoring relay；The second end connection of the coil of very first time relay
Second end of the coil of the first main supply relay；
The stationary contact of second time relay connects the second end of fourth passage, the coil of second time relay respectively
First end, movable contact connects the movable contact of second source supervisory relay；The second end connection of the coil of second time relay
Second end of the coil of the second main supply relay.
It should be noted that as shown in Fig. 2 very first time relay is time relay sj 1, second time relay is
Time relay sj 2, the movable contact and stationary contact of the first power monitoring relay are respectively time relay sj 1：18 and SJ1：
15, the movable contact and stationary contact of second source supervisory relay are respectively time relay sj 1：18 and SJ1：15.
Specifically, as shown in Fig. 2 time relay sj 1：The SJ1 of 15-18 nodes：15 connect change-over switch respectively
SA1：The SA1 of 3-4 nodes：4th, the A1 ends of the coil of time relay sj 1, SJ1：18 connection power monitoring relay KA1：67-
The KA1 of 68 nodes：68, the A2 ends of the coil of time relay sj 1 connect main supply relay KM2：The KM2 of 15-16 nodes：
15；
Time relay sj 2：The SJ2 of 15-18 nodes：15 connect change-over switch SA1 respectively：The SA1 of 5-6 nodes：When the 6th,
Between relay SJ2 coil A1 ends, SJ2：18 connection power monitoring relay KA2：The KA2 of 67-68 nodes：68, the time after
The A2 ends of electrical equipment SJ2 coil connect main supply relay KM1：The KM1 of 15-16 nodes：15.
Based on the time relay in loop of the present invention, when main electricity dead electricity, standby electricity is switched to without delay
When on source, fan electromotor coil can produce higher reverse induction potential during due to dead electricity, cause starting current excessive, cause electricity
Source air switch tripping operation.Based on the time relay in loop of the present invention, the loop conducting of time relay delay power supply allows
After the reverse induction potential decay of fan electromotor coil, then put into stand-by power supply, it is to avoid starting current is excessive, cause power supply empty
The problem of air cock trips.
In a specific embodiment, main transfer wind cooling system secondary circuit control device of the present invention,
Any one in first on-off control unit, the second on-off control unit, double-direction control unit break down when,
Send the alarm signal of corresponding Switching power.
Specifically, Fig. 4 is the signal circuit schematic diagram of main transfer wind cooling system secondary circuit control device of the present invention, is such as schemed
The constraints transmitted of " air-cooled full cut-off " signal shown in 4, is added, two groups of blower fans of KA3, KA4, KA5 is added and starts relay
Device contact, it is ensured that the signal of " air-cooled full cut-off " is only sent when operating condition needs blower fan startup and not actuated blower fan.
Time relay sj 2 opens contact and power monitoring relay KA1 closes contact parallel connection and formed " current power supply "
Alarm signal, time relay sj 1 opens contact and power monitoring relay KA2 closes contact parallel connection and formed " back-up power source "
Alarm signal.
Based on the supervisory relay of the two-way power supply in loop of the present invention, break in power supply decompression or relay coil itself
In the case of, automatically switch to stand-by power supply and power, while sending out alarm signal.Or it is disconnected in main power supply supervisory relay coil
In the case of line, automatically switch to stand-by power supply and power, while sending out alarm signal.Two-way power supply while restore electricity again after dead electricity
When, it is ensured that the main power supply according to original setting is powered, all alarm signals of automatic resetting；
" air-cooled full cut-off " transmitting for signal is improved, the constraints transmitted is added, it is ensured that be " air-cooled complete
Stop " alarm signal only operating condition need blower fan start and blower fan it is not actuated when send, and transformer it is out of service when or it is light
This signal is not sent out during carrying row, so as to reduce the unnecessary interference transmitted to operations staff.
The invention provides a kind of embodiment 1 of air cooler control system, Fig. 5 is the blower fan of air cooler control system of the present invention
Circuit theory diagrams, as described in Figure 5, air cooler control system of the present invention, including main transfer wind cooling system secondary circuit control device；Also wrap
Include some blower fan groups；
Blower fan group passage time relay connects the output end of main transfer wind cooling system secondary circuit control device.
Specifically, the power output end of active air-cooled power transfer device is powered to each blower fan group, and each blower fan group is mutual
Parallel connection, is connected between the two ends of power output end, in order to which each blower fan group staggers startup, starts blower fan group except default first
Outside, other each blower fan groups all control its delay start by the time relay.
The present invention improves the reliability of dual power supply switching, and air cooler control system is powered by main power supply and automatically switched to by standby
When being powered with power supply, first group of blower fan of delayed startup through 10S, then be delayed through 10S, start second group of blower fan, it is to avoid due to wind
The presence of the reverse induction potential produced during fan motor dead electricity and two groups of blower fans start simultaneously, and generation starting current is excessive, leads
The situation of power supply air switch switch trip during in-put of spare power supply is caused to occur, and terminal winding displacement installs single according to using function distribution
Member, while carrying out specification to loop and terminal row wiring according to existing demand of technical standard.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of main transfer wind cooling system secondary circuit control device, it is characterised in that
Converting unit including connecting current power supply, back-up power source；Also include the first on-off control unit, first prolongs
When control unit, the second on-off control unit, the second delays time to control unit and double-direction control unit；
First on-off control unit, the input of the first delays time to control unit connect described by the converting unit
Current power supply, output end is grounded by the double-direction control unit；Second on-off control unit, second delay
The input of control unit connects the back-up power source by the converting unit, and output end passes through the double-direction control list
Member ground connection；
The double-direction control unit is when the current power supply breaks down, conducting and the second break-make unit and institute
State the path of the second delays time to control unit；The back-up power source gives the second delays time to control list by the change-over switch
Member power supply, so that the second delays time to control unit controls the main transformer of the double-direction control unit conducting back-up power source
Air-cooled current supply circuit.
2. main transfer wind cooling system secondary circuit control device according to claim 1, it is characterised in that the stand-by power supply
Power supply passes through described turn when the current power supply, the back-up power source switch to normal power supply by malfunction
Unit is changed to power to the second delays time to control unit, so that the second delays time to control unit is in default delay time section,
The power supply for postponing the back-up power source lags behind the power supply of the current power supply；
The current power supply switchs to normal confession in the current power supply, the back-up power source by malfunction
When electric, powered by the converting unit to first on-off control unit, so that first on-off control unit is controlled
The double-direction control unit turns on the active air-cooled current supply circuit of the current power supply, disconnects the back-up power source
Active air-cooled current supply circuit.
3. main transfer wind cooling system secondary circuit control device according to claim 1 or 2, it is characterised in that also including
One power supply protector, second source protector；
First power supply protector is connected between the converting unit and the current power supply；The second source is protected
Shield device is connected between the converting unit and the back-up power source.
4. main transfer wind cooling system secondary circuit control device according to claim 3, it is characterised in that the converting unit
For change-over switch.
5. main transfer wind cooling system secondary circuit control device according to claim 4, it is characterised in that the change-over switch
Including the first path, alternate path, third path and fourth passage；
First path, the first end of the alternate path connect the current power supply electricity by first power supply protector
Source, the second end of first path connects the input of first on-off control unit, the second end of the alternate path
Connect the input of the first delays time to control unit；
The third path, the first end of the fourth passage connect the stand-by power supply electricity by the second source protector
Source, the second end of the third path connects the second on-off control unit input, and the second end of the fourth passage connects
Connect the input of the second delays time to control unit.
6. main transfer wind cooling system secondary circuit control device according to claim 5, it is characterised in that first break-make
Control unit is the first power monitoring relay；Second on-off control unit is second source supervisory relay；
The stationary contact of the first power monitoring relay connects the second end of first path, and movable contact connection is described two-way
Control unit；The first end of the coil of the first power monitoring relay connects the first end of the alternate path, the second end
Ground connection；
The stationary contact of the second source supervisory relay connects the second end of the third path, and movable contact connection is described two-way
Control unit；The first end of the coil of the second source supervisory relay connects the first end of the fourth passage, the second end
Ground connection.
7. main transfer wind cooling system secondary circuit control device according to claim 6, it is characterised in that the double-direction control
Unit includes the first main supply relay, the second main supply relay；
The first end of the coil of the first main supply relay connect respectively the first power monitoring relay movable contact,
The first delays time to control unit, the second end connects the stationary contact of the second main supply relay；It is described first it is main power supply after
The movable contact ground connection of electrical equipment；
The first end of the coil of the second main supply relay connect respectively the second source supervisory relay movable contact,
The second delays time to control unit, the second end connects the stationary contact of the first main supply relay；It is described second it is main power supply after
The movable contact ground connection of electrical equipment.
8. main transfer wind cooling system secondary circuit control device according to claim 7, it is characterised in that first delay
Control unit is very first time relay；The second delays time to control unit is second time relay；
The stationary contact of the very first time relay connects the second end of the alternate path, the very first time relay respectively
Coil first end, movable contact connects the movable contact of the first power monitoring relay；The very first time relay
Second end of coil connects the second end of the coil of the first main supply relay；
The stationary contact of second time relay connects the second end of the fourth passage, second time relay respectively
Coil first end, movable contact connects the movable contact of the second source supervisory relay；Second time relay
Second end of coil connects the second end of the coil of the second main supply relay.
9. main transfer wind cooling system secondary circuit control device according to claim 1, it is characterised in that
Any one in first on-off control unit, second on-off control unit, the double-direction control unit is going out
During existing failure, the alarm signal of corresponding Switching power is sent.
10. a kind of air cooler control system, it is characterised in that including the main transfer wind cooling system described in claim 1 to 9 any one
Secondary circuit control device；Also include some blower fan groups；
The blower fan group passage time relay connects the output end of the main transfer wind cooling system secondary circuit control device.
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| CN201710720313.8A CN107317390B (en) | 2017-08-21 | 2017-08-21 | Main transformer air cooling control system secondary circuit principle wiring standard design |
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| CN201710720313.8A CN107317390B (en) | 2017-08-21 | 2017-08-21 | Main transformer air cooling control system secondary circuit principle wiring standard design |
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| CN107317390B CN107317390B (en) | 2024-03-26 |
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Effective date of registration: 20200925 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant before: GUANGZHOU POWER SUPPLY Co.,Ltd. |
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