CN206060608U - A kind of power control structure of gas turbine energized circuit - Google Patents
A kind of power control structure of gas turbine energized circuit Download PDFInfo
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- CN206060608U CN206060608U CN201621097154.8U CN201621097154U CN206060608U CN 206060608 U CN206060608 U CN 206060608U CN 201621097154 U CN201621097154 U CN 201621097154U CN 206060608 U CN206060608 U CN 206060608U
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Abstract
This utility model provides a kind of power control structure of gas turbine energized circuit，Including startup transformator、MDS 4 (startup AC circuit breaker)、Exciting transformer、MDS 5 (excitation AC circuit breaker) and excitation system are the generating set from shunt excitation mode，The electric end of entering of starting transformer is connected with bus，Sending end is connected in series with AC circuit breaker with startup，Startup AC circuit breaker is connected with incoming line cabinet，The electric end of entering of exciting transformer is connected with generating set，After sending end is connected with excitation AC circuit breaker，The load side for accessing startup AC circuit breaker in parallel，Further comprises the main circuit of MDS 4、The main circuit and auxiliary circuit of auxiliary circuit and MDS 5，By carrying out in main circuit and auxiliary circuit，Related structure is optimized，Do not increasing associate power equipment，Only some structures are changed，The misoperation between different exciting mode on energized circuit is prevented，Ensure the safe handling of generating set.
Description
Technical field
This utility model is related to natural gas power unit apparatus field, and a kind of more particularly to gas turbine energized circuit is opened
Close control structure.
Background technology
Gas Generator Set is to be used as power by the natural gas that burns, but as combustion engine detent torque is big, combustion engine itself cannot
Self-starting, while combustion engine igniting is also required to a basic rotating speed, therefore needs the power of an outside to rotate whole axle.
Static frequency changer SFC is usually used（StaticFrequency Converter）As main Starting mode.
As shown in figure 1, in SFC starting operations, now required excitation capacity is little, and due to the wiring of excitation system
Mode is that, from shunt excitation wiring, generator outlet does not have voltage, and excitation unit cannot be powered by exciting transformer, therefore excitation rises
Moving plate built with a special starting transformer for powering to excitation system during SFC starting operations, i.e. the separate excitation method of operation.
So during startup, need applied voltage to carry out excitation, and after gas turbine generator normal work, you can carry out certainly
Generating is encouraged, so needing the process for having a switching to self-excitation and separate excitation in this process.
During actual switching, it is by MDS-4 (startup AC circuit breaker) and MDS-5（Excitation is disconnected with exchange
Road device）The state of both break-makes controlling the source of field power supply because two groups of power supplys are supplied under different working condition
What electricity was used, so two groups of power supplys can not be also turned on.
In specific ON-OFF control circuit, as shown in accompanying drawing 2 and accompanying drawing 3, the structure of its interlocking is provided in respectively
From main circuit on, in the case of ensure that between MDS-4 or MDS-5 one of closure in theory, another can not
It is enough to close.But in the actual condition of production, usually can be because of some environment reasons so that K42 the or K52 contacts in loop
It is abnormal, it will to cause MDS-4 and MDS-5 while closing a floodgate, starting transformer or exciting transformer can be caused when serious to damage, caused
Unit forced outage.Zhong Hai Fujian fuel gas generation company limited has occurred as soon as that K42 contact insulation resistances are too low to cause unit 3000
Turn MDS-4 false switchings when building pressure, make starting transformer overexcitation, cause excitation system failure and chaser.
In addition, in actual production process, separating brake locking is that the K5 and K6 for carrying software by SFC is realized, this to close
The reliability of lock is not strong, lacks the locking of hard contact, if MDS-4 misses separating brake and will make unit starting under the SFC methods of operation
Failure, if MDS-5 mistakes separating brake will make loss of exicitation in generation mode, produces more serious impact to unit.
Utility model content
Problem to be solved in the utility model is how existing MDS-4 and MDS-5 control loops to be improved, carried
High energized circuit reliably switches among different energy supply loops, reduces false switching and the event of separating brake occurs by mistake.
In order to solve the above problems, this utility model provides a kind of power control structure of gas turbine energized circuit,
Including startup transformator, MDS-4 (startup AC circuit breaker), exciting transformer, MDS-5 (excitation AC circuit breaker) and
Excitation system is the generating set from shunt excitation mode, and the electric end of entering of starting transformer is connected with bus, sending end and startups friendship
Stream chopper is connected in series, and startup AC circuit breaker is connected with incoming line cabinet, and the electric end of entering of exciting transformer is connected with generating set
Connect, after sending end is connected with excitation AC circuit breaker, the load side for accessing startup AC circuit breaker in parallel；
Further comprises the main circuit and auxiliary circuit of main circuit, auxiliary circuit and the MDS-5 of MDS-4；Characterized in that,
The control structure that the main circuit of MDS-4 is included common wire and is sequentially connected with common wire, control structure Parallel opertation
It is connected with common return line to the K42 and K43 being connected in parallel, the closing coil control circuit of the auxiliary circuit of the MDS-4
After normally closed switch MDS-4, normally closed switch MDS-5, MDS-4 closing relay have been sequentially connected in series from common wire, with common return line
Connection, switching winding control circuit have been sequentially connected in series 41E from common wire, after MDS-4 switches, MDS-4 separating brake relays with it is public
Return line connects；
The control structure that the auxiliary electricity of MDS-5 is sequentially connected including common wire and common wire, control structure Parallel opertation, one
Road is sequentially connected in series normally closed switch MDS-4, is connected with common return line after normally closed switch MDS-5, K52, and another road is sequentially connected in series
It is connected with common return line after MDS-5 switches, K53, the closing coil control circuit of the auxiliary circuit of the MDS-5 is from common wire
Normally closed switch MDS-4 is sequentially connected in series, after normally closed switch MDS-5, MDS-5 closing relay, has been connected with common return line, separating brake
Coil control circuit has been sequentially connected in series 41E, is connected with common return line after MDS-5 switches, MDS-5 separating brake relays.
Control structure in the main circuit of MDS-4 is divided into distant place control and controls on the spot, and a distant place is controlled from common wire successively
After series connection K5 and K1, it is connected with K42, is connected with K43 after the load side of K5 is connected in parallel K4, controlled from public line parallel on the spot
Output, is connected with the load side of K1 after connecting S41 all the way, and another road is connected with the load-side after S41 with K4；
Control structure in the main circuit of described MDS-5 is divided into distant place control and controls on the spot, and distant place control is from public
After line is sequentially connected in series K6 and K2, it is connected with MDS-4 normally closed switch, connects with MDS-5 switches after the load side of K6 is connected in parallel K4
Connect, control on the spot, from common wire Parallel opertation, to be connected with the load side of K3 after connecting S45 all the way, with K4's behind another road and S51
Load-side connects.
K42 and K43 is included in MDS-4 auxiliary circuits also, the K42 is arranged in series between common wire and MDS-4, described
K43 is arranged in series between common wire and normally closed switch 41E；
K52 and K53 is included in MDS-5 auxiliary circuits also, the K52 is arranged in series in common wire and normally closed switch MDS-
Between 4, the K53 is arranged in series between common wire and normally closed switch 41E.
Also include that S43, the S43 are arranged between common wire and control structure in MDS-4 main circuits and MDS-5 main circuits.
Busbar voltage is 6KV.
Generating set is gas turbine generator group.
Incoming line cabinet is excitation alternating current inlet wire cabinet.
This utility model has beneficial effect：
1. interlocking structure is arranged on auxiliary circuit, prevented completely MDS- to be made because K42 and K52 are protected from environmental
4 and MDS-5 false switchings.
2. entering correspondence unit 41E field switches auxiliary contact in sub-gate circuit string carries out locking, has prevented normal completely
The situation that separating brake is missed in work occurs.
Description of the drawings
Fig. 1 is equipment electrical connection diagram of the present utility model.
MDS-4 control drawings of the Fig. 2 for prior art.
MDS-5 control drawings of the Fig. 3 for prior art.
Fig. 4 is MDS-4 control drawings of the present utility model.
Fig. 5 is MDS-5 control drawings of the present utility model.
Description of the drawings is as follows：1 is the first control structure, and 2 is the second control structure, and S43 is chopper, and K1 ~ K6 is that SFC is soft
Switch in part, S41 are MDS-4 combined floodgate/separating brake controlling switches, and S51 is MDS-5 combined floodgate/separating brake controlling switches, and MDS-4 is to start
With AC circuit breaker, MDS-5 is excitation AC circuit breaker, and K42, K43, K52, K53 are relay coil, and E41 is opened for excitation
Close auxiliary contact, Y1 for MDS-4 feed motion relay, Y2 for MDS-4 separating brake relay, Y3 for MDS-5 combined floodgate after
Electrical equipment, Y4 prick relay for the root of MDS-5.
Specific embodiment
Below in conjunction with the accompanying drawings preferred embodiment of the present utility model is described in detail so that it is of the present utility model a little
It is more easy to be readily appreciated by one skilled in the art with feature, so as to make protection domain of the present utility model apparent defining.
This utility model when in use, carries out the connection of equipment and related software referring to the drawings 4 and accompanying drawing 5,
When gas turbine needs to start, S41 is pressed, K42 is powered and connects, K42 closures in auxiliary circuit, because now MDS-4 and MDS-5
Combined floodgate is, so the closing coil control circuit conducting of MDS-4, the conducting of Y1 invocation points, MDS-4 carry out feed motion, complete
After the action of combined floodgate, Y1 dead electricity, gas turbine carry out normal SFC Booting sequences.If now K43 sends the action of separating brake by mistake
, because 41E field switches are because just, and, during excitation, 41E obtains electrically disconnected, although K43 have issued the signal of separating brake by mistake,
But but there is no the action of separating brake by mistake.If in addition, K52 sends the signal of false switching at this moment, in the closing coil of MDS-5
Because MDS-4 works in control circuit, so Y3 must not be electric, although K52 have issued the information of false switching, but but not go out
The action of existing false switching.
During normal switching, because of gas turbine rotary speed enough, after disconnecting separate excitation excitation, 41E dead electricity, now
S41 is pressed again so that K43 obtains electric, turn on switching winding so that Y2 obtains electric, and MDS-4 carries out separating brake.S51 is pressed in addition, because
Now MDS-4 and MDS-5 are not in "on" position, so K52 obtains electric, have simultaneously turned on Y3 so that MDS-5 carries out closing a floodgate dynamic
Make, the excitation mode of gas turbine is changed into self-excitation mode.In MDS-5 normal works, if K42 misoperations, MDS-4 conjunctions are sent
Lock action, because MDS-5 is just in "on" position in MDS-4 closing coils, Y1 must not be electric, although K42 have issued combined floodgate
Misoperation, but the action for not having false switching occurs, in addition in the normal courses of work of MDS-5, K53 have issued by mistake separating brake
Signal when, remain because 41E obtains electric, Y4 must not electricity, although K53 have issued the action signal of by mistake separating brake, but real
But the action of separating brake does not occur by mistake on border.
When it is to have arrived closing one step of excitation to need to close gas turbine, it is only necessary to obtain K53 by pressing S51 again
Electricity so that Y4 obtain it is electric after carry out separating brake action.So far the excitation for completely cutting through gas turbine is powered.
Embodiment of the present utility model is explained in detail above in conjunction with accompanying drawing, but this utility model is not limited to
Above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, can be with without departing from this utility model
On the premise of objective, various changes can be made.
Claims (7)
1. a kind of power control structure of gas turbine energized circuit, including startup transformator, MDS-4 startup alternating current interruptions
Device, exciting transformer, MDS-5 excitations AC circuit breaker and excitation system are the generating set from shunt excitation mode, start transformation
The electric end of entering of device is connected with bus, and sending end is connected in series with AC circuit breaker with startup, startup AC circuit breaker and inlet wire
Cabinet connects, and the electric end of entering of exciting transformer is connected with generating set, after sending end is connected with excitation AC circuit breaker, and is coupled
Enter the load side of startup AC circuit breaker；
Further comprises the main circuit and auxiliary circuit of main circuit, auxiliary circuit and the MDS-5 of MDS-4；Characterized in that,
The first control structure that the main circuit of the MDS-4 is included common wire and is sequentially connected with common wire, the first control structure
Parallel opertation is connected with common return line to the K42 and K43 being connected in parallel, the closing coil of the auxiliary circuit of the MDS-4
After control circuit has been sequentially connected in series normally closed switch MDS-4, normally closed switch MDS-5, MDS-4 closing relay from common wire, with public affairs
Return line connection altogether, switching winding control circuit have been sequentially connected in series 41E, MDS-4 switches, MDS-4 separating brake relays from common wire
It is connected with common return line afterwards；
The auxiliary electricity of the MDS-5 includes the second control structure that common wire and common wire are sequentially connected, and the second control structure is simultaneously
Connection output, which is sequentially connected in series normally closed switch MDS-4 all the way, is connected with common return line after normally closed switch MDS-5, K52, Ling Yilu
It is connected with common return line after being sequentially connected in series MDS-5 switches, K53, the closing coil control circuit of the auxiliary circuit of the MDS-5
Normally closed switch MDS-4 is sequentially connected in series from common wire, after normally closed switch MDS-5, MDS-5 closing relay, with common return line
Connection, switching winding control circuit have been sequentially connected in series 41E, connect with common return line after MDS-5 switches, MDS-5 separating brake relays
Connect.
2. the power control structure of gas turbine energized circuit according to claim 1, it is characterised in that described MDS-
The first control structure in 4 main circuit be divided into a distant place control and control on the spot, a distant place control from common wire be sequentially connected in series K5 and
After K1, it is connected with K42, is connected with K43 after the load side of K5 is connected in parallel K4, is controlled from common wire Parallel opertation on the spot, one
It is connected with the load side of K1 after road connection S41, another road is connected with the load-side after S41 with K4；
The second control structure in the main circuit of described MDS-5 is divided into distant place control and controls on the spot, and distant place control is from public
After line is sequentially connected in series K6 and K2, it is connected with MDS-4 normally closed switch, connects with MDS-5 switches after the load side of K6 is connected in parallel K4
Connect, control on the spot, from common wire Parallel opertation, to be connected with the load side of K3 after connecting S45 all the way, with K4's behind another road and S51
Load-side connects.
3. the power control structure of gas turbine energized circuit according to claim 2, it is characterised in that described MDS-
K42 and K43 is included in 4 auxiliary circuits also, the K42 is arranged in series between common wire and MDS-4, and the K43 is arranged in series
Between common wire and normally closed switch 41E；
K52 and K53 is included in described MDS-5 auxiliary circuits also, the K52 is arranged in series in common wire and normally closed switch
Between MDS-4, the K53 is arranged in series between common wire and normally closed switch 41E.
4. the power control structure of gas turbine energized circuit according to claim 1, it is characterised in that described MDS-
Also include that S43, the S43 are arranged between common wire and control structure in 4 main circuits and MDS-5 main circuits.
5. the power control structure of gas turbine energized circuit according to claim 1, it is characterised in that described bus
Voltage is 6KV.
6. the power control structure of gas turbine energized circuit according to claim 1, it is characterised in that described generating
Unit is gas turbine generator group.
7. the power control structure of gas turbine energized circuit according to claim 1, it is characterised in that described inlet wire
Cabinet is excitation alternating current inlet wire cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621097154.8U CN206060608U (en) | 2016-10-01 | 2016-10-01 | A kind of power control structure of gas turbine energized circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621097154.8U CN206060608U (en) | 2016-10-01 | 2016-10-01 | A kind of power control structure of gas turbine energized circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206060608U true CN206060608U (en) | 2017-03-29 |
Family
ID=58366968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621097154.8U Expired - Fee Related CN206060608U (en) | 2016-10-01 | 2016-10-01 | A kind of power control structure of gas turbine energized circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206060608U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394884A (en) * | 2017-09-04 | 2017-11-24 | 贵州乌江水电开发有限责任公司构皮滩发电厂 | A kind of excitation system, which opens, encourages power supply architecture and control method |
| CN107979096A (en) * | 2017-12-22 | 2018-05-01 | 国电南瑞科技股份有限公司 | A kind of excitation control method during large-scale phase modifier startup is grid-connected |
| CN112910342A (en) * | 2020-12-27 | 2021-06-04 | 深圳南山热电股份有限公司 | Excitation mode of gas turbine |
-
2016
- 2016-10-01 CN CN201621097154.8U patent/CN206060608U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394884A (en) * | 2017-09-04 | 2017-11-24 | 贵州乌江水电开发有限责任公司构皮滩发电厂 | A kind of excitation system, which opens, encourages power supply architecture and control method |
| CN107394884B (en) * | 2017-09-04 | 2023-09-05 | 贵州乌江水电开发有限责任公司构皮滩发电厂 | Excitation system excitation power supply structure and control method |
| CN107979096A (en) * | 2017-12-22 | 2018-05-01 | 国电南瑞科技股份有限公司 | A kind of excitation control method during large-scale phase modifier startup is grid-connected |
| CN107979096B (en) * | 2017-12-22 | 2021-10-01 | 国电南瑞科技股份有限公司 | Excitation control method in starting grid-connected process of large phase modulator |
| CN112910342A (en) * | 2020-12-27 | 2021-06-04 | 深圳南山热电股份有限公司 | Excitation mode of gas turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170329 Termination date: 20171001 |