CN206594244U - A kind of short-circuit test system for gas turbine - Google Patents
A kind of short-circuit test system for gas turbine Download PDFInfo
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- CN206594244U CN206594244U CN201720369195.6U CN201720369195U CN206594244U CN 206594244 U CN206594244 U CN 206594244U CN 201720369195 U CN201720369195 U CN 201720369195U CN 206594244 U CN206594244 U CN 206594244U
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- 238000012360 testing method Methods 0.000 title claims abstract description 55
- 230000005284 excitation Effects 0.000 claims abstract description 19
- 230000008859 change Effects 0.000 claims description 7
- 230000003068 static effect Effects 0.000 claims description 7
- 230000001939 inductive effect Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 18
- 238000002474 experimental method Methods 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model is related to a kind of short-circuit test system for gas turbine, including：Startup field power supply switch, startup exciting transformer, startup excitation disconnecting link, field switch and the power cell being sequentially connected, power cell is also connected with field regulator and rotor coil respectively, field regulator is also connected with generator as output end, and rotor coil provides operating fields for generator.A kind of short-circuit test system for gas turbine that the utility model is provided, it need not disconnect exciting transformer high-pressure side when carrying out short-circuit test and draw and connect temporary source, it is simple to operate and safe, have the advantages that energy-saving and emission-reduction, high financial profit, test efficiency are high and practical.
Description
Technical field
The utility model is related to fuel gas generation field, more particularly to a kind of short-circuit test system for gas turbine.
Background technology
After short-circuit test system overhaul when gas turbine, G-T protective plant modification, it is required for carrying out short-circuit test,
To verify whether generator and short-circuit test systematic parameter, protection device parameter are correct.
Existing gas turbine short-circuit test system is when carrying out short-circuit test, according to traditional test method, it is necessary to will
Exciting transformer high-pressure side disconnects, and connects and leads to station-service 6kV temporary sources, the excitation needed when providing experiment by exciting transformer
Electric current.When carrying out short-circuit test, with being related to, measure is more, and the operation maintenance personnel of participation is more, and security risk is higher to be lacked
Point, and do disconnect, recover high-pressure side wiring when, due to unobvious cut-off point, unit, which must be shut down, to be carried out, to combustion
A start and stop process is needed for gas-turbine, therefore, before short-circuit test system test safety measure and experiment after measure recover
The time is required for, rule of thumb needing at least six hour, (measure of doing needs or so 3 hours, and Gas Generator Set is again started up interval
It is required that 2 hours, shutdown process is respectively needed 0.5 hour), cause experimental test excessively very long, increase manpower, the goods and materials cost of experiment.
Meanwhile, because short-circuit test is carried out in the case of unit rated speed, unit no-load running needs to expend a large amount of
Natural gas, a quarter when natural gas is about rated load is consumed when unloaded, with 400MW Gas-steam Combined Cycles
Natural gas about 20000Nm is consumed exemplified by unit, when unloaded3/ h, gas industry gas price presses 2.30 yuan/Nm3Calculate, unit is unloaded
When about 4.6 ten thousand yuan of fuel cost per hour, cause experimentation cost too high.
Utility model content
Technical problem to be solved in the utility model is to be used for gas turbine there is provided one kind in view of the shortcomings of the prior art
Short-circuit test system.
The technical scheme that the utility model solves above-mentioned technical problem is as follows：
A kind of short-circuit test system for gas turbine, including：The startup field power supply being sequentially connected switchs, starts and encourage
Magnetic transformer, start excitation disconnecting link, field switch and power cell, the power cell also respectively with field regulator and rotor
Coil is connected, and the field regulator is also connected as output end with generator, and the rotor coil provides for the generator
Operating fields.
The beneficial effects of the utility model are：A kind of short-circuit test system for gas turbine that the utility model is provided
System, need not disconnect exciting transformer high-pressure side and draw and connect temporary source when carrying out short-circuit test, simple to operate and safe,
Compared with traditional gas turbine short-circuit test system, the test period of or so 3 hours can be saved, excitation is being carried out in addition
After no-load test, transformer unit short-circuit test, then the fast quick-recovery normal operating mode of energy carries out set grid-connection, if excitation
Dynamic test, can also realize that experiment is uninterrupted and carry out, meanwhile, during test period when saving 3 small or so, it can save
13.8 ten thousand yuan of costs, have the advantages that energy-saving and emission-reduction, high financial profit, test efficiency are high and practical.
On the basis of above-mentioned technical proposal, the utility model can also do following improvement.
Further, the startup field power supply switch is connected with station-service 6kV power supplys.
Further, the field regulator is also associated with current transformer, and the current transformer is the adjustment of field excitation
Device provides mutual inducing current, is connected between the field regulator and the generator by voltage transformer, the mutual induction of voltage
Device provides mutual voltage for the field regulator.
Further, 220V dc source is connected between the power cell and the rotor coil.
Further, Generator Outlet Switchgear and main transformer pressure are also connected between the generator and the output end in turn
Device.
Further, static frequency change starting module is also associated between the Generator Outlet Switchgear and the generator.
Further, the static frequency change starting module includes the SFC power switches and SFC units being sequentially connected, the SFC
Unit is connected in the lower mouth of the Generator Outlet Switchgear with the generator outlet.
Further, the SFC power switches are connected with station-service 6kV power supplys.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Brief description of the drawings
A kind of structural framing for short-circuit test system for gas turbine that Fig. 1 provides for the utility model embodiment
Figure；
A kind of structure for short-circuit test system for gas turbine that Fig. 2 provides for another embodiment of the utility model
Figure.
Embodiment
Principle of the present utility model and feature are described below in conjunction with accompanying drawing, example is served only for explaining this practicality
It is new, it is not intended to limit scope of the present utility model.
As shown in figure 1, a kind of knot of the short-circuit test system for gas turbine provided for the utility model embodiment
Structure frame diagram, the system includes：The startup field power supply being sequentially connected switchs 101, starts exciting transformer 102, starts excitation
Disconnecting link 103, field switch 104 and power cell 105, power cell 105 also respectively with field regulator 106 and rotor coil
107 connections, field regulator 106 is also connected with generator 108 as output end, and rotor coil 107 is that generator 108 provides work
Make magnetic field.
A kind of short-circuit test system for gas turbine that above-described embodiment is provided, need not when carrying out short-circuit test
Disconnection exciting transformer high-pressure side, which is drawn, connects temporary source, simple to operate and safe, with traditional gas turbine short-circuit test
System is compared, and can save the test period of or so 3 hours, is carrying out excitation no-load test, transformer unit short-circuit test in addition
Afterwards, the fast quick-recovery normal operating mode of energy, then carries out set grid-connection, if excitation dynamic test, can also realize experiment
It is uninterrupted to carry out, meanwhile, during test period when saving 3 small or so, 13.8 ten thousand yuan of costs can be saved, are subtracted with energy-conservation
The high and practical advantage of row, high financial profit, test efficiency.
As shown in Fig. 2 a kind of short-circuit test system for gas turbine provided for another embodiment of the utility model
Structure chart, the system includes：The startup field power supply being sequentially connected switchs 101, starts exciting transformer 102, starts excitation
Disconnecting link 103, field switch 104 and power cell 105, power cell 105 also respectively with field regulator 106 and rotor coil
107 connections, field regulator 106 is also connected with generator 108 as output end, and rotor coil 107 is that generator 108 provides work
Make magnetic field.
For example, field regulator 106 can select Mitsubishi's MEC5000 types.
Further, start field power supply switch 101 and be connected with station-service 6kV power supplys.
Further, field regulator 106 is also associated with current transformer 109, and current transformer 109 is field regulator
106 provide mutual inducing current, are connected between field regulator 106 and generator 108 by voltage transformer 110, voltage transformer
110 be that field regulator 106 provides mutual voltage.
Further, 220V dc source is connected between power cell 105 and rotor coil 107.
Further, Generator Outlet Switchgear 111 and main transformer are also connected between generator 108 and output end in turn
112。
Further, static frequency change starting module is also associated between Generator Outlet Switchgear 111 and generator 108.
Further, static frequency change starting module includes the SFC power switches 113 and SFC units 114 being sequentially connected, and SFC is mono-
Member 114 is connected in the lower mouth of Generator Outlet Switchgear 111 with the outlet of generator 108.
Further, SFC power switches 113 are connected with station-service 6kV power supplys.
It should be noted that SFC units 114 are static frequency change starter unit, it is used for the initial stage in unit starting
External force is provided for unit, promotes the rotor of unit to reach certain rotating speed, is unit ignition, generating unit speed is risen to combustion engine and controls oneself
Rotating speed, allows unit smoothly to start, and can be generally made up of starting transformer, rectifier and inverter etc..
The instrument and device of concrete model are not provided in above-described embodiment, can be realized using conventional instrument and device
Above-mentioned functions.
In another embodiment, with reference to short circuit experiment, the short-circuit test system to gas turbine is described further.
First, allow unit normally to start, the rotating speed of unit is maintained at 3000 revs/min, unit is possessed short-circuit test
Condition.
Then confirm the correct exhaustive of safety measure, prepare experiment Work tool and record form.
Field regulator is cut to MANUAL CONTROL mode, and the initial value of manual excitation is adjusted to minimum.
Field power supply switch will be started and start excitation disconnecting link and be cut to manual control mode.
Short dot is chosen, startup field power supply switch is incorporated into manually, is started after excitation disconnecting link and field switch, is adjusted manually
Section excitation is slowly flowed up.
Test, the related short-circuit test data of record, after being completed, are reduced to 0 by exciting current manually, excitation are disconnected manually
Switch, startup field power supply switch and startup excitation disconnecting link.
If any other short dots, short dot is chosen again, is tested again, until total Test is completed.
After the completion of experiment, field power supply switch will be started, start excitation disconnecting link and revert to automatic control mode, unit without
Shut down, can be normally grid-connected, then carry out unit dynamic test or formally put into operation.
In the description of this specification, reference term " embodiment one ", " embodiment two ", " example ", " specific example " or
The description of " some examples " etc. means that combining the embodiment or specific method, device or the feature of example description is contained in this reality
With at least one new embodiment or example.In this manual, the schematic representation of above-mentioned term is necessarily directed to
Be identical embodiment or example.Moreover, description specific features, method, device or feature can any one or it is many
Combined in an appropriate manner in individual embodiment or example.In addition, in the case of not conflicting, those skilled in the art can
So that the not be the same as Example or the feature of example and non-be the same as Example or example described in this specification to be combined and combine.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Claims (8)
1. a kind of short-circuit test system for gas turbine, it is characterised in that including：The startup field power supply being sequentially connected is opened
(101) are closed, starts exciting transformer (102), start excitation disconnecting link (103), field switch (104) and power cell (105), institute
State power cell (105) to be also connected with field regulator (106) and rotor coil (107) respectively, the field regulator (106)
Also it is connected with generator (108) as output end, the rotor coil (107) is that the generator (108) provides operating fields.
2. short-circuit test system according to claim 1, it is characterised in that the startup field power supply switch (101) is even
It is connected to station-service 6kV power supplys.
3. short-circuit test system according to claim 1, it is characterised in that the field regulator (106) is also associated with
Current transformer (109), the current transformer (109) is that the field regulator (106) provides mutual inducing current, the excitation
Connected between adjuster (106) and the generator (108) by voltage transformer (110), the voltage transformer (110) is
The field regulator (106) provides mutual voltage.
4. short-circuit test system according to claim 1, it is characterised in that the power cell (105) and the rotor
220V dc source is also associated between coil (107).
5. short-circuit test system according to any one of claim 1 to 4, it is characterised in that the generator (108) and
Also it is connected with Generator Outlet Switchgear (111) and main transformer (112) between the output end in turn.
6. short-circuit test system according to claim 5, it is characterised in that in the Generator Outlet Switchgear (111) and
Static frequency change starting module is also associated between the generator (108).
7. short-circuit test system according to claim 6, it is characterised in that the static frequency change starting module is included successively
The SFC power switches (113) and SFC units (114) of connection, the SFC units (114) are in the Generator Outlet Switchgear
(111) lower mouth is connected with the generator (108) outlet.
8. short-circuit test system according to claim 7, it is characterised in that the SFC power switches (113) are connected with factory
Use 6kV power supplys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720369195.6U CN206594244U (en) | 2017-04-10 | 2017-04-10 | A kind of short-circuit test system for gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720369195.6U CN206594244U (en) | 2017-04-10 | 2017-04-10 | A kind of short-circuit test system for gas turbine |
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| Publication Number | Publication Date |
|---|---|
| CN206594244U true CN206594244U (en) | 2017-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720369195.6U Expired - Fee Related CN206594244U (en) | 2017-04-10 | 2017-04-10 | A kind of short-circuit test system for gas turbine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108919030A (en) * | 2018-06-25 | 2018-11-30 | 北京京丰燃气发电有限责任公司 | A kind of selection method starting exciting transformer |
-
2017
- 2017-04-10 CN CN201720369195.6U patent/CN206594244U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108919030A (en) * | 2018-06-25 | 2018-11-30 | 北京京丰燃气发电有限责任公司 | A kind of selection method starting exciting transformer |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171027 |
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| CF01 | Termination of patent right due to non-payment of annual fee |