CN207753501U - The air compressor machine of anti-low voltage crossing controls power supply - Google Patents
The air compressor machine of anti-low voltage crossing controls power supply Download PDFInfo
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- CN207753501U CN207753501U CN201721837359.XU CN201721837359U CN207753501U CN 207753501 U CN207753501 U CN 207753501U CN 201721837359 U CN201721837359 U CN 201721837359U CN 207753501 U CN207753501 U CN 207753501U
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- air compressor
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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
- 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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- Power Engineering (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of air compressor machines of anti-low voltage crossing to control power supply, the utility model is improved on former air compressor machine control power supply, make former 380V/110V isolating transformers TC1 current supply circuits into powered by host UPS feeder lines 220V/110V transformer-supplieds, so that the control power supply can guarantee the normal operation of air compressor machine in the case where low voltage crossing occurs for external electric system, the reliability of control power supply is improved；In addition, retaining the case where isolating transformer TC1 can prevent the failures such as control loop ground short circuit from influencing host UPS trippings, and buffer action is played, to further improve the safety of ups power power supply.
Description
Technical field
The utility model is related to a kind of control power supplys, and in particular to a kind of air compressor machine control power supply of anti-low voltage crossing,
Belong 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, generally mainly by oily cyclic system
The compositions such as system, water passage circulation system, distribution system and screen protection protecting system, DC power system, DTC control systems.Air compressor machine can
It is opened and closed applied to traditional air urethral catheterization management, instrument control and automation equipment, vehicle braking, door and window, large-scale marine diesel oil
Startup, technology controlling and process power of machine 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 grids, causes our factory
Low voltage crossing occurs for electricity system, and voltage magnitude reduces.When the voltage for controlling power supply reduces, then it can cause running master
Machine instrument air compressor machine, ash disposal air compressor machine, desulfurization air compressor machine, denitration air compressor machine all trip and send out " integrated alarm ", immediately
It the spare air compressor machine of host and sends out " integrated alarm " so that air compressor machine is that " power supply is different with regard to the display alarm information on floor plate
Often ".Power phase shortage supervisory relay J and the air compressor machine control being particularly due in the cooling blower of running instrument air compressor machine
Power monitoring relay KA11 decompressions return and make air compressor machine action tripping.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
The QF1 power supplies of PC sections of drawer switchs of peace, are 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 powers to controller through 380V/100V isolating transformers TC1.For
It prevents the operational process power supply from phase shortage situation occurs, power phase shortage is connected with after Switching Power Supply QF6 in 380V AC powers
The normally opened contact KA6 of supervisory relay J, the power phase shortage supervisory relay J go here and there with control power monitoring relay KA11 phases
It is connected in the branch of controller after connection.In operational process, if any phase low voltage crossing occurs for system, power phase shortage prison
It is 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 is disconnected, and leads to the control power monitoring relay being in series with normally opened contact KA6
KA11 decompressions return, so as to cause the tripping of air compressor machine.(i.e. this is when to make A phases or any phase of B phases that low voltage crossing occur
When power grid of uniting breaks down), isolating transformer TC1 voltages will be difficult to meet the voltage request of 100V control loops, cause to control
Power monitoring relay KA11 decompressions cannot keep (voltage relay return voltage is 65V), air compressor machine tripping.That is external power
System occurs that the voltage for controlling power supply will be caused to substantially reduce, when being reduced to certain amplitude when low voltage crossing, spare shape
Instrument under state is acted with air compressor machine voltage relay, is controlled the circuit of power supply because " power failure " alarms, can not have been joined, it will lead
It causes entire generating set accident is non-to stop, causes inevitable economic loss.
Thus it is not difficult to find out, instrument is affected to the safe and stable operation of entire generating set with air compressor machine, need to be to power supply
Control loop is transformed, to avoid stop jumping and exception occur when low voltage crossing.On the control power supply of existing generating set
Equipped with UPS.UPS (Uninterruptible Power System) is uninterruptible power supply, is that one kind containing energy storage device, with
Inverter is the uninterruptible power supply of the constant voltage constant frequency of chief component.It is mainly used for single computer, computer network system
System or other power electronic equipments provide continual supply of electric power.When alternating current input is normal, UPS will be supplied after alternating current voltage stabilizing
It is used to load, UPS at this time 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 converted by inversion continues to supply 220V exchanges UPS
Electricity makes load maintain to work normally and protects load soft and hardware without damage.If UPS is introduced into the control power supply of air compressor machine,
The voltage disturbance that can occur by external fault to avoid air compressor machine.But the access of UPS is bound to will be to the electricity of entire 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.
Utility model content
In view of the above-mentioned deficiencies, sensitive, operation that the technical problem to be solved by the utility model is to provide a kind of controls is surely
The air compressor machine of fixed reliable anti-low voltage crossing controls power supply, which can make air compressor machine in operational process not by its institute
The interference of the exterior power supply of category.
In order to achieve the above objectives, the utility model is achieved through the following technical solutions：
The air compressor machine of anti-low voltage crossing controls power supply, includes the air compressor machine control power supply body with ups power, described
Air compressor machine control power supply body include controller, cooling blower M2, high-voltage motor M1, isolating transformer TC1, contactor KM1 and
380V AC powers for providing power to cooling blower M2,380V AC powers are successively through air switch QF4 and contactor
It is electrically connected with cooling blower M2 after KM1, 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 ends I/O of the controller connect with monitoring system, controlling
The output contact of device is connected with the DCS signal circuits for showing air compressor machine state, and an electricity is connected in 380V AC powers
The normally opened contact KA6 of source phase shortage supervisory relay J, the power phase shortage supervisory relay J and control power monitoring relay
KA11 is connected to after being in series in the branch of controller, and the feeder ear of the controller is connected to the secondary of isolating transformer TC1
On side, the primary side of isolating transformer TC1 is connect after power switch QF2 with ups power.
It is 220 AC powers based on ups power, the isolating transformer TC1 can be 220V/110V in said program
The transformer of AV, 630VA.
In said program, when low voltage crossing occurs for busbar in order to prevent, control normally opened tactile in power monitoring relay
The case where malfunction of point KA6 causes air compressor machine to trip exists normally opened contact KA6 on above-mentioned power phase shortage supervisory relay J
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 said program, 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 electric appliance KA11 access DCS signal circuits as control power supply alerts letter
Number.
The beneficial features of the utility model are：
1) the utility model is improved on former air compressor machine control power supply, i.e., by former 380V/110V isolating transformers TC1
Current supply circuit makes the 220V/110V transformer-supplieds powered by host UPS feeder lines into so that even if the control power supply is in external electrical
Force system occurs also to can guarantee 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 case where isolating transformer TC1 can prevent the failures such as control loop ground short circuit from influencing host UPS trippings,
And buffer action is played, to further improve the safety of ups power power supply.
2) former power phase shortage supervisory relay J is transformed it to 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, is made
The operation for obtaining this control power supply is more stablized.
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, ensureing control electricity
Source it is safe and reliable while, also greatly reduce workload and expense, it is highly practical.
Description of the drawings
A in Fig. 1 is the electrical connection signal that instrument before our factory does not improve controls power supply with air compressor machine on the spot
B in Fig. 1 is the part connection diagram of the internal control branch of control power supply 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.
The part electrical connection graph of Fig. 4 devices in order to control.
Fig. 5 is the control electrical connection graph of air compressor machine output contact (DCS).
Figure label is：1, 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.
Specific implementation mode
As shown in Fig. 2, the air compressor machine of anti-low voltage crossing controls power supply, include the air compressor machine control electricity with ups power
Source ontology.Air compressor machine control power supply body include controller, cooling blower M2, high-voltage motor M1, isolating transformer TC1,
Contactor KM1 and 380V AC powers for providing power to cooling blower M2.380V AC powers are successively through air switch
It is electrically connected with cooling blower M2 after QF4 and contactor KM1.A power phase shortage supervisory relay is connected in 380V AC powers
J.The feeder ear of the controller is connected on the secondary side of isolating transformer TC1, and the primary side of isolating transformer TC1 is through power supply
It is connect with ups power after switch QF2.That is the controller of control power supply body is 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 for influencing ups power, plays buffer action.In the present embodiment, the isolating transformer TC1 is specially 220V/110V
The transformer of AV, 630VA.
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 is by communicating mould
Block is connected with the monitoring system for monitoring air compressor machine.The ends I/O of the controller are connect with monitoring system.
As shown in Figure 5 the DCS signal circuits for showing air compressor machine state are connected in the output contact of controller.It should
Hardware corresponding to DCS signal circuits is display screen and the circuit being connect 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 loads 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 improved power supply control in external electrical connection and internal controller circuit.
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 of controller.I.e. this control power supply changes the power phase shortage supervisory relay J on the basis of Fig. 1
Into, specifically by power phase shortage supervisory relay J normally opened contact KA6 carry out short circuit, while start control power monitoring relay
Normal opened contact on device KA11 obtains controlling subcircuits figure in controller as indicated at 4.
When the generating set operation of our factory, once instrument air compressor machine, which all trips, will cause unit tripping, after unit tripping
About 30 to 500,000 yuan of cost needed for often starting 1 time.Our factory to about 30,000 yuan of the improvement repair materials cost loss of this control power supply,
And try out improved control power supply in 5 instrument air compressor machines, and follow-up investigations in 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 original machine group, stability and
Safety 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, it is no longer influenced by external power supply, avoids preventing completely
The case where causing air compressor machine to trip because of voltage ride-through.
It these are only the embodiment for illustrating the utility model, be not intended to limit the utility model, for this field
For technical staff, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (3)
- Include the air compressor machine control power supply body with ups power, the sky 1. the air compressor machine of anti-low voltage crossing controls power supply It includes controller, cooling blower M2, high-voltage motor M1, isolating transformer TC1, contactor KM1 and use that press, which controls power supply body, In the 380V AC powers for providing power to cooling blower M2,380V AC powers are successively through air switch QF4 and contactor KM1 It is 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 ends I/O of the controller are connect with monitoring system, in controller Output contact be connected with the DCS signal circuits for showing air compressor machine state, a power supply is connected in 380V AC powers The normally opened contact KA6 of phase shortage supervisory relay J, the power phase shortage supervisory relay J and control power monitoring relay KA11 It is connected in the branch of controller after being in series, it is characterised in that：The feeder ear of the controller is connected on the secondary side of isolating transformer TC1, and the primary side of isolating transformer TC1 is through electricity It is connect with ups power after source switch QF2.
- 2. the air compressor machine of anti-low voltage crossing according to claim 1 controls power supply, it is characterised in that：The isolation transformation Device TC1 is the transformer of 220V/110V AV, 630VA.
- 3. the air compressor machine of anti-low voltage crossing according to claim 1 or 2 controls power supply, 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 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207753501U true CN207753501U (en) | 2018-08-21 |
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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 |
| CN201711419524.4A Pending CN107887974A (en) | 2017-12-25 | 2017-12-25 | The air compressor machine control power supply of anti-low voltage crossing |
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| Application Number | Title | Priority Date | Filing Date |
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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 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| 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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2017
- 2017-12-25 CN CN201721837359.XU patent/CN207753501U/en active Active
- 2017-12-25 CN CN201711419524.4A patent/CN107887974A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN107887974A (en) | 2018-04-06 |
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