CN107887974A - The air compressor machine control power supply of anti-low voltage crossing - Google Patents
The air compressor machine control power supply of anti-low voltage crossing Download PDFInfo
- Publication number
- CN107887974A CN107887974A CN201711419524.4A CN201711419524A CN107887974A CN 107887974 A CN107887974 A CN 107887974A CN 201711419524 A CN201711419524 A CN 201711419524A CN 107887974 A CN107887974 A CN 107887974A
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- air compressor
- compressor machine
- power supply
- control power
- low voltage
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- 238000012544 monitoring process Methods 0.000 claims description 27
- 238000001816 cooling Methods 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 9
- 230000009466 transformation Effects 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 4
- 230000006837 decompression Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000010759 marine diesel oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- H02J11/00—Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed or converted
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a kind of air compressor machine of anti-low voltage crossing to control power supply, the present invention is improved on former air compressor machine control power supply, will former 380V/110V isolating transformers TC1 current supply circuits make into by main frame UPS feeder lines power 220V/110V transformer-supplieds, so that the control power supply also can guarantee that the normal operation of air compressor machine in the case that low voltage crossing occurs for external power system, the reliability of control power supply is improved；In addition, retaining the situation that isolating transformer TC1 can prevent that the fault impacts such as control loop ground short circuit from tripping to main frame UPS, and buffer action is played, so as to further increase the security of ups power power supply.
Description
Technical field
The present invention relates to one kind to control power supply, and in particular to a kind of air compressor machine control power supply of anti-low voltage crossing, belongs to
The control technology field of steam power plant.
Background technology
Air compressor (referred to as air compressor machine) is a kind of equipment to compressed gas, typically mainly by oily cyclic system
System, water passage circulation system, distribution system and screen protection protecting system, DC power system, DTC control systems etc. are formed.Air compressor machine can
Applied to traditional air urethral catheterization management, instrument control and automation equipment, vehicle braking, door and window keying, large-scale marine diesel oil
The startup of machine, technology controlling and process power etc..Therefore air compressor machine is used in every field.Such as the enterprise as energy power station
Industry-thermal power plant, air compressor machine are one of capital equipments of our factory.
When electric power system fault (such as influence of typhoon) outside area, transient fault occurs for 220kv power networks, causes our factory
Low voltage crossing occurs for electricity system, and voltage magnitude reduces.When controlling the voltage of power supply to reduce, then it can trigger operating master
Machine instrument is all tripped with air compressor machine, ash disposal air compressor machine, desulfurization air compressor machine, denitration air compressor machine and sends " integrated alarm ", immediately
The standby air compressor machine of main frame to send out " integrated alarm " so that air compressor machine is with regard to the display alarm information on floor plate for " power supply is different
Often ".Power phase shortage supervisory relay J and the air compressor machine control being particularly due in the cooling blower of operating instrument air compressor machine
Power monitoring relay KA11 decompressions return and make air compressor machine action tripping operation.Our factory do not improve before air compressor machine electrical connection diagram,
As shown in a, b in Fig. 1：I.e. instrument controls power supply and air compressor machine cooling blower electrical source of power with air compressor machine on the spot, is by as guarantor
Pacify the QF1 power supplies of PC section drawer switchs, be 380V AC powers.Cooling blower M2 is controlled through air switch QF4 by contactor KM1
System, and air compressor machine control power supply takes the AB phases of AC power and is powered through 380V/100V isolating transformers TC1 to controller.For
Prevent the running power supply from phase shortage situation occurs, power phase shortage is connected with after Switching Power Supply QF6 in 380V AC powers
Supervisory relay J, the power phase shortage supervisory relay J normally opened contact KA6 go here and there with control power monitoring relay KA11 phases
It is connected to after connection in the branch road of controller.In running, if any phase low voltage crossing occurs for system, power phase shortage prison
Returned depending on relay J decompressions so that in the controlling brancher that the normally opened contact KA6 on power phase shortage supervisory relay J is connected to
101 and 125 disconnect, normally opened contact KA6 disconnect, cause the control power monitoring relay being in series with normally opened contact KA6
KA11 decompressions return, so as to cause the tripping operation of air compressor machine.(this is so that when low voltage crossing occurs for A phases or B phases any phase
When power network of uniting breaks down), isolating transformer TC1 voltages will be difficult to the voltage request that meets 100V control loops, cause to control
Power monitoring relay KA11 decompressions can not be kept (voltage relay return voltage is 65V), air compressor machine tripping operation.That is external power
The voltage that system occurs to cause to control power supply during low voltage crossing substantially reduces, when being reduced to certain amplitude, standby shape
Instrument under state is acted with air compressor machine voltage relay, controls the loop of power supply can not join, it will lead because " power failure " alarms
Cause whole generating set accident is non-to stop, cause inevitable economic loss.
Thus it is not difficult to find out, instrument is had a great influence with air compressor machine to the safe and stable operation of whole generating set, need to be to power supply
Control loop is transformed, and stop jumping and exception occur during avoiding low voltage crossing.On the control power supply of existing generating set
Equipped with UPS.UPS (Uninterruptible Power System), is uninterrupted power source, is that one kind contains energy storage device, with
Inverter is the uninterrupted power source of the constant voltage constant frequency of chief component.It is mainly used in single computer, computer network system
System or other power electronic equipments provide continual supply of electric power.When civil power input is normal, UPS will be supplied after civil power voltage stabilizing
Used to load, UPS now is exactly an electric main voltage-stablizer, while it also charges to self-contained battery；Work as commercial power interruption
When (forced outage), immediately by the electric energy of self-contained battery, the square normal load changed by inversion continues to supply 220V exchanges UPS
Electricity, load is maintained normal work and protect load soft and hardware without damage.If UPS is introduced into the control power supply of air compressor machine,
The voltage disturbance that air compressor machine can be avoided to occur by external fault.But UPS access is bound to will be to the electricity of whole air compressor machine
Source control loop carries out adaptation transformation in wiring and the related device being equipped with, and retrofit work amount is big, improvement cost is big.
The content of the invention
For above-mentioned deficiency, the technical problems to be solved by the invention are to provide that a kind of control is sensitive, stable can
The air compressor machine control power supply of the anti-low voltage crossing leaned on, the control power supply can make air compressor machine in running not by belonging to it
The interference of its exterior power supply.
To reach above-mentioned purpose, the present invention is achieved through the following technical solutions：
The air compressor machine control power supply of anti-low voltage crossing, including the control power supply body of the air compressor machine with ups power, it is described
Air compressor machine control power supply body include controller, cooling blower M2, high-voltage motor M1, isolating transformer TC1, contactor KM1 and
For providing the 380V AC powers of power to cooling blower M2,380V AC powers are successively through air switch QF4 and contactor
Electrically connected after KM1 with cooling blower M2, high-voltage motor M1 is connected with startup of high-voltage motor cabinet, and the startup of high-voltage motor cabinet passes through
Communication module is connected with the monitoring system for monitoring air compressor machine, and the I/O ends of the controller are connected with monitoring system, controlled
The output contact of device is connected with the DCS signal circuits for showing air compressor machine state, and an electricity is connected with 380V AC powers
Source phase shortage supervisory relay J, the power phase shortage supervisory relay J normally opened contact KA6 and control power monitoring relay
KA11 is connected in the branch road of controller after being in series, and the feeder ear of the controller is connected to the secondary of isolating transformer TC1
On side, isolating transformer TC1 primary side is connected after power switch QF2 with ups power.
It is 220 AC powers based on ups power in such scheme, the isolating transformer TC1 can be 220V/110V
AV, 630VA transformer.
In such scheme, in order to prevent bus occur low voltage crossing when, control power monitoring relay in it is normally opened touch
Point KA6 malfunction causes the situation that air compressor machine trips, and normally opened contact KA6 on above-mentioned power phase shortage supervisory relay J is existed
Short circuit is carried out in control power monitoring relay circuit, and former power phase shortage supervisory relay J is changed to power phase shortage monitoring report
Alert signal uploads DCS.
In such scheme, start the normal opened contact on control power monitoring relay KA11, and will control power monitoring after
Monitoring on " air compressor machine resultant fault " signal circuit in electrical equipment KA11 access DCS signal circuits as control power supply alerts letter
Number.
The present invention beneficial features be：
1) present invention is improved on former air compressor machine control power supply, will former 380V/110V isolating transformers TC1 power supplies
Make the 220V/110V transformer-supplieds powered by main frame UPS feeder lines into loop so that the control power supply is even in external power system
System occurs also to can guarantee that the normal operation of air compressor machine in the case of low voltage crossing, improves the reliability of control power supply；In addition,
Retain the situation that isolating transformer TC1 can prevent that the fault impacts such as control loop ground short circuit from tripping to main frame UPS, and play
Buffer action, so as to further increase the security of ups power power supply.
2) former power phase shortage supervisory relay J is carried out transforming its use, and connected normally opened tactile on controlling brancher
Point KA6 carries out short circuit, and enables the normal opened contact on former control power monitoring relay KA11 simultaneously, to realize in remotely monitor
Synchronization, also control and is connected in the wiring of DCS " air compressor machine resultant fault " signal circuit power monitoring relay KA11, made
The operation for obtaining this control power supply is more stable.
3) this control power supply makes full use of resource, by ups power of the original place under stand-by state through corresponding connection
It is changed to power to controller, without changing the control loop of former air compressor machine, only relates to the connection of local line, is ensureing control electricity
Source it is safe and reliable while, also greatly reduce workload and expense, it is practical.
Brief description of the drawings
A in Fig. 1 is that the instrument before our factory does not improve controls the electrical connection of power supply to illustrate on the spot with air compressor machine
B in Fig. 1 is the part connection diagram for the internal control branch road that power supply is controlled in a.
Fig. 2 is that the air compressor machine of this anti-low voltage crossing controls the electrical connection diagram of power supply.
Fig. 3 is the electrical connection diagram of the control plant-grid connection air compressor machine in Fig. 2.
Fig. 4 is the part electrical connection graph of controller.
Fig. 5 is the control electrical connection graph of air compressor machine output contact (DCS).
In figure marked as：1st, ups power, M1, high-voltage motor, M2, cooling blower, KM1, contactor, J, power phase shortage prison
Depending on relay, KA6, normally opened contact, KA11, control power monitoring relay, TC1, isolating transformer.
Embodiment
As shown in Fig. 2 the air compressor machine control power supply of anti-low voltage crossing, including the control electricity of the air compressor machine with ups power
Source body.Air compressor machine control power supply body include controller, cooling blower M2, high-voltage motor M1, isolating transformer TC1,
Contactor KM1 and the 380V AC powers for providing power to cooling blower M2.380V AC powers are successively through air switch
Electrically connected after QF4 and contactor KM1 with cooling blower M2.A power phase shortage supervisory relay is connected with 380V AC powers
J.The feeder ear of the controller is connected on isolating transformer TC1 secondary side, and isolating transformer TC1 primary side is through power supply
It is connected after switch QF2 with ups power.The controller of power supply body is controlled to be powered by 220V/110V ups powers, in UPS electricity
The former isolating transformer TC1 connected between source and controller voltage output end can prevent the failures such as control loop ground short circuit
The tripping operation of ups power is had influence on, plays buffer action.In the present embodiment, the isolating transformer TC1 is specially 220V/110V
AV, 630VA transformer.
As shown in figure 3, high-voltage motor M1 is connected with startup of high-voltage motor cabinet.The startup of high-voltage motor cabinet passes through the mould that communicates
Block is connected with the monitoring system for monitoring air compressor machine.The I/O ends of the controller are connected with monitoring system.
As shown in Figure 5 DCS signal circuits for showing air compressor machine state are connected with the output contact of controller.Should
Hardware corresponding to DCS signal circuits is display screen and the circuit being connected with display screen.The air compressor machine state has that " air compressor machine is comprehensive
Close failure S4 ", " compressor operation S5 ", " air compressor machine has shut down S6 ", " air compressor machine loading S8 ", " air compressor machine accident runs S9 ".
In the present embodiment, by control power monitoring relay KA11 and it is connected in the wiring of DCS " air compressor machine resultant fault " signal circuit,
So that synchronization of the power supply in outside electrical connection and internal controller loop after improving.
After the normally opened contact KA6 of the power phase shortage supervisory relay J is in series with control power monitoring relay KA11
It is connected in the branch road of controller.I.e. this control power supply is changed the power phase shortage supervisory relay J on the basis of Fig. 1
Enter, normally opened contact KA6 on power phase shortage supervisory relay J is specifically subjected to short circuit, while start control power monitoring relay
Normal opened contact on device KA11, obtain control subcircuits figure in controller as indicated at 4.
During the generating set operation of our factory, once instrument air compressor machine, which all trips, will trigger unit tripping, after unit tripping
Often start about 30 to 500,000 yuan of cost needed for 1 time.About 30,000 yuan of improvement repair materials cost loss of the our factory to this control power supply,
And try out the control power supply after improvement in 5 instrument air compressor machines, and the follow-up investigations of 2 months by a definite date have been carried out, no longer send out
Air compressor machine trip event caused by raw low voltage crossing, tripping times reduce 40~60% compared with former unit, stability and
Security is greatly improved.Therefore, the cost of flower very little brings very big favorable factor to set steady safe operation, and
Achieve long-range economic interests.Meanwhile the operation of instrument air compressor machine, no longer influenceed by external power source, avoid preventing completely
Because voltage ride-through causes the situation that air compressor machine trips.
Explanation embodiments of the present invention are these are only, are not intended to limit the invention, for those skilled in the art
For, within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in this hair
Within bright protection domain.
Claims (3)
1. the air compressor machine control power supply of anti-low voltage crossing, including the control power supply body of the air compressor machine with ups power, the sky
Press control power supply body includes controller, cooling blower M2, high-voltage motor M1, isolating transformer TC1, contactor KM1 and use
In the 380V AC powers that power is provided to cooling blower M2,380V AC powers are successively through air switch QF4 and contactor KM1
Electrically connected afterwards with cooling blower M2, high-voltage motor M1 is connected with startup of high-voltage motor cabinet, and the startup of high-voltage motor cabinet passes through logical
Letter module is connected with the monitoring system for monitoring air compressor machine, and the I/O ends of the controller are connected with monitoring system, in controller
Output contact be connected with DCS signal circuits for showing air compressor machine state, a power supply is connected with 380V AC powers
Phase shortage supervisory relay J, the power phase shortage supervisory relay J normally opened contact KA6 and control power monitoring relay KA11
It is connected to after being in series in the branch road of controller, it is characterised in that：
The feeder ear of the controller is connected on isolating transformer TC1 secondary side, and isolating transformer TC1 primary side is through electricity
It is connected after source switch QF2 with ups power.
2. the air compressor machine control power supply of anti-low voltage crossing according to claim 1, it is characterised in that：The isolation transformation
Device TC1 is 220V/110V AV, 630VA transformer.
3. the air compressor machine control power supply of anti-low voltage crossing according to claim 1 or 2, it is characterised in that：By the electricity
Normally opened contact KA6 carries out short circuit on the phase shortage supervisory relay J of source.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721837359.XU CN207753501U (en) | 2017-12-25 | 2017-12-25 | The air compressor machine of anti-low voltage crossing controls power supply |
| CN201711419524.4A CN107887974A (en) | 2017-12-25 | 2017-12-25 | The air compressor machine control power supply of anti-low voltage crossing |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721837359.XU CN207753501U (en) | 2017-12-25 | 2017-12-25 | The air compressor machine of anti-low voltage crossing controls power supply |
| CN201711419524.4A CN107887974A (en) | 2017-12-25 | 2017-12-25 | The air compressor machine control power supply of anti-low voltage crossing |
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| Publication Number | Publication Date |
|---|---|
| CN107887974A true CN107887974A (en) | 2018-04-06 |
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| CN201711419524.4A Pending CN107887974A (en) | 2017-12-25 | 2017-12-25 | The air compressor machine control power supply of anti-low voltage crossing |
| CN201721837359.XU Active CN207753501U (en) | 2017-12-25 | 2017-12-25 | The air compressor machine of anti-low voltage crossing controls power supply |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721837359.XU Active CN207753501U (en) | 2017-12-25 | 2017-12-25 | The air compressor machine of anti-low voltage crossing controls power supply |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107887974A (en) * | 2017-12-25 | 2018-04-06 | 国投钦州发电有限公司 | The air compressor machine control power supply of anti-low voltage crossing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204156765U (en) * | 2014-04-26 | 2015-02-11 | 襄阳赛克斯电气股份有限公司 | A kind of high-voltage intelligent dynamic compensation soft starter device |
| CN204794127U (en) * | 2015-07-01 | 2015-11-18 | 江苏大唐国际吕四港发电有限责任公司 | Feeder low voltage ride through control circuit |
| CN205304246U (en) * | 2015-12-31 | 2016-06-08 | 惠生（南京）清洁能源股份有限公司 | High -voltage inverter power supply system |
| CN207753501U (en) * | 2017-12-25 | 2018-08-21 | 国投钦州发电有限公司 | The air compressor machine of anti-low voltage crossing controls power supply |
-
2017
- 2017-12-25 CN CN201711419524.4A patent/CN107887974A/en active Pending
- 2017-12-25 CN CN201721837359.XU patent/CN207753501U/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204156765U (en) * | 2014-04-26 | 2015-02-11 | 襄阳赛克斯电气股份有限公司 | A kind of high-voltage intelligent dynamic compensation soft starter device |
| CN204794127U (en) * | 2015-07-01 | 2015-11-18 | 江苏大唐国际吕四港发电有限责任公司 | Feeder low voltage ride through control circuit |
| CN205304246U (en) * | 2015-12-31 | 2016-06-08 | 惠生（南京）清洁能源股份有限公司 | High -voltage inverter power supply system |
| CN207753501U (en) * | 2017-12-25 | 2018-08-21 | 国投钦州发电有限公司 | The air compressor machine of anti-low voltage crossing controls power supply |
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| Publication number | Publication date |
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| CN207753501U (en) | 2018-08-21 |
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