CN103457529B - A kind of variable frequency starting control method of heavy duty gas turbine group - Google Patents
A kind of variable frequency starting control method of heavy duty gas turbine group Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000010926 purge Methods 0.000 claims abstract description 14
- 230000000903 blocking effect Effects 0.000 claims abstract description 12
- 238000005070 sampling Methods 0.000 claims description 15
- 230000005284 excitation Effects 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000003068 static effect Effects 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000011217 control strategy Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 88
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005032 impulse control Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The invention provides a kind of variable frequency starting control method of heavy duty gas turbine group, concrete steps are: A, frequency converter enter after receiving and purging instruction and force commutation mode of operation; When the speed-frequency of B, gas turbine set is nature commutation frequency, frequency converter enters nature commutation mode of operation; C, frequency converter enter non-blocking mode after receiving and stopping purging instruction; D, frequency converter enter maximum output torque mode of operation after receiving enabled instruction; After E, set end voltage reach the rated voltage of frequency converter, frequency converter enters the maximum operate power mode of operation of gas turbine set; When the rotating speed of F, gas turbine set is self-sustaining speed, frequency converter enters non-blocking mode; After frequency converter receives exit instruction, frequency converter enters holding state.Compared to the prior art, heavy duty gas turbine group variable frequency starting control method provided by the invention, for providing control strategy and gas turbine set operation switching mode startup stage of different, achieves gas turbine set rotating speed and set end voltage cooperation control.
Description
Technical field
The present invention relates to a kind of gas turbine and start control method, specifically relate to a kind of variable frequency starting control method of heavy duty gas turbine group.
Background technology
Current domestic and international conventional coal-fired thermal power generation unit still dominate in electrical network, but because being subject to the restriction of the factors such as energy supply, environmental pollution, energy resource structure, sustainability of its development is affected.Seeking new powering mode in world wide, namely wherein combustion gas, steam combined cycle power generating pattern are one, and this pattern has the advantages that exhaust emission is little, startup is fast, response performance is good; By the restriction in season, quick peak regulation, adjustment or go-home effect can not be played in electrical network, improve simultaneously and optimize NETWORK STRUCTURE PRESERVING POWER SYSTEM.
The Starting mode of gas turbine set can be divided into mechanical type and electric; Mechanical type start mainly adopt coaxially an additional starter motor to drag the startup of whole unit; Electric starts then mainly employing frequency control way and realizes the startup of whole gas turbine generator group.Mechanical type Starting mode is adopted for Heavy duty gas unit, realize different machine torque by gear box to export, impact larger to unit macro-axis, and the unit failure such as rotating parts and gear box rate is higher, have a strong impact on the safe and stable operation of equipment, therefore adopt the mode of static frequency-conversion to control generator starting, realize various operating mode and run; Adopt the mode of static frequency-conversion to make direct torque realize unit smooth starting, reliability is high, and multiple stage gas turbine set can share a frequency converter, greatly reduces the maintenance in power station, maintenance workload, improves peak regulation, the fm capacity of gas-fired station;
Therefore provide one can realize rotating speed and set end voltage cooperation control variable frequency starting control method when heavy duty gas turbine starts and seem particularly important.
Summary of the invention
In order to overcome the defect of prior art, the invention provides a kind of variable frequency starting control method of heavy duty gas turbine group, the set end voltage of gas turbine set described in frequency converter Real-time Collection, machine end electric current and tach signal; Described control method comprises the steps:
A, described frequency converter enter after receiving the purging instruction of gas turbine set supervisory control system transmission and force commutation mode of operation, carry out constant torque control to described gas turbine set;
When the speed-frequency of B, described gas turbine set is nature commutation frequency, described frequency converter enters nature commutation mode of operation; When described speed-frequency is frequency corresponding to described purging instruction, described frequency converter carries out rotating speed double-closed-loop control;
C, described frequency converter enter non-blocking mode after receiving the stopping purging instruction of described gas turbine set supervisory control system transmission;
D, described frequency converter enter gas turbine set maximum output torque mode of operation after receiving the enabled instruction of described gas turbine set supervisory control system transmission;
After E, described set end voltage reach the rated voltage of frequency converter, described frequency converter enters the maximum operate power mode of operation of gas turbine set;
When the rotating speed of F, described gas turbine set is self-sustaining speed, described frequency converter enters non-blocking mode; After described frequency converter receives the exit instruction of described gas turbine set supervisory control system transmission, described frequency converter enters holding state.
Preferably, described frequency converter is static frequency convertor;
Preferably, the described frequency converter in described steps A carries out closed-loop control according to the gas turbine set stator current signal sampled to described gas turbine set stator current; Control described gas turbine set by inverter bridge trigger impulse after described frequency converter sampling rotor-position signal to accelerate to rotate; Gas turbine set excitation system carries out closed-loop control to exciting current, and described exciting current was constant current before described set end voltage reaches described rated voltage;
Preferably, the described natural commutation frequency in described step B is 4Hz ~ 6Hz; Described rotating speed double-closed-loop control comprises gas turbine set speed closed loop and controls and the closed-loop control of gas turbine set stator current; Control described gas turbine set by inverter bridge trigger impulse after described frequency converter sampling rotor-position signal to accelerate to rotate; Described gas turbine set excitation system carries out closed-loop control to described exciting current;
Preferably, after described in described step C, frequency converter enters described non-blocking mode, described gas turbine set stator current and described exciting current are zero;
Preferably, frequency converter described in described step D carries out closed-loop control to described gas turbine set stator current; Described gas turbine set excitation system carries out closed-loop control to described exciting current;
Preferably, frequency converter described in described step e carries out closed-loop control to described gas turbine set stator current; Described frequency converter carries out double-closed-loop control to described set end voltage, and described double-closed-loop control comprises set end voltage closed-loop control and described gas turbine set excitation system carries out closed-loop control to described exciting current;
Preferably, after described in described step F, frequency converter enters described non-blocking mode, when described gas turbine set stator current is linearly decreased to zero, described exciting current is zero.
Excellent effect of the present invention is:
1, in technical solution of the present invention, during rated voltage lower than frequency converter of the set end voltage of gas turbine set, adopt gas turbine set maximum output torque mode of operation, the maximum output of detent torque achieving gas turbine set controls, effectively can promote the toggle speed of gas turbine set in low frequency phase, be conducive to combustion engine to participate in electric power system peak regulation and quickly through gas turbine low-frequency resonant point, prevent low-frequency resonant from occurring; Improve Gas Generator Set to electrical network capability of fast response;
2, in technical solution of the present invention, when the set end voltage of gas turbine set is equal to or greater than the rated voltage of frequency converter, adopt the maximum operate power mode of operation of gas turbine set, the maximum power output realizing gas turbine set under the not overvoltage of frequency converter safety runs can be ensured, improve power factor and the efficiency of frequency converter; Ensure the maximum output under frequency converter rated capacity, save Gas Generator Set start-up time;
3, in technical solution of the present invention, force in commutation process in pulse, gas turbine set maximum output torque is adopted to control, rectifier bridge adopts closed-loop current control namely to carry out single closed-loop control to gas turbine set stator current and exciting current, effectively prevent the control problem that double-closed-loop control causes in low-speed stage sampling error, low frequency phase started control steadily, control simple and reliable;
4, in technical solution of the present invention, frequency converter adopts rotating speed double-closed-loop control after entering nature commutation mode of operation, improves rotating speed control precision and speeds control dynamic characteristic;
5, the variable frequency starting control method of a kind of heavy duty gas turbine group provided by the invention, the purging started for heavy gas turbine set, start and exit each stage and provide different control strategies and gas turbine set runs switching mode, realize rotating speed and set end voltage cooperation control when gas turbine set starts, start converter plant to the requirement of combustion engine self-sustaining speed after meeting gas ignition and steadily exit.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is: the heavy duty gas turbine group variable frequency starting control method flow chart in the embodiment of the present invention;
Fig. 2 is: the heavy duty gas turbine group in the embodiment of the present invention starts major loop topological diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is clearly and completely described.
Fig. 1 shows the heavy duty gas turbine group variable frequency starting control method flow chart in the embodiment of the present invention; The set end voltage of frequency converter Real-time Collection gas turbine set, machine end electric current and tach signal, concrete steps are:
(1) frequency converter enters after receiving the purging instruction of gas turbine set supervisory control system transmission and forces commutation mode of operation, carries out constant torque control to gas turbine set; Gas turbine set excitation system is to exciting current I
fdcarry out closed-loop control, exciting current I
fdbe constant current before set end voltage reaches described rated voltage, I
fd=C;
1.: frequency converter carries out closed-loop control to gas turbine set stator current, rated secondary current value I according to the gas turbine set stator current signal sampled
n=1200A; The PI of gas turbine set stator current closed-loop control regulates algorithm to adopt increment type PI control algolithm:
e
i (k)=i
(k)-i
(k-1), wherein, u
(k)the increment type PI corresponding for the k moment controls output variable and trigger of frequency converter control signal, realizes the closed-loop control of gas turbine set stator current; k
p, k
ibe respectively proportional control parameter and the integral control parameter of increment type PI control; T
sfor frequency converter sampling period constant; e
i (k)for the deviate of frequency converter sampling input variable; i
(k)for frequency converter kth primary current sampled value; i
(k-1)for frequency converter kth-1 primary current sampled value;
2.: accelerate to rotate by controlling inverter bridge trigger impulse control gas turbine set after frequency converter sampling rotor-position signal; The corresponding relation that the IGBT group of rotor-position signal and inverter bridge is numbered is:
| Rotor-position | IGBT group is numbered |
| ‐30‐30 | T25、T26 |
| 30‐90 | T26、T21 |
| 90‐150 | T21、T22 |
| 150‐210 | T22、T23 |
| 210‐270 | T23、T24 |
| 270‐330 | T24、T25 |
(2) speed-frequency of gas turbine set is nature commutation frequency f
qduring=5Hz, frequency converter enters nature commutation mode of operation; Speed-frequency is that when purging frequency corresponding to instruction, frequency converter carries out rotating speed double-closed-loop control; Gas turbine set excitation system is to exciting current I
fdcarry out closed-loop control, exciting current I
fdbe constant current before set end voltage reaches described rated voltage, I
fd=C; Nature commutation frequency f
q=4Hz ~ 6Hz;
1.: rotating speed double-closed-loop control comprises gas turbine set speed closed loop and controls and the closed-loop control of gas turbine set stator current; The rotating speed purging instruction corresponding is N
cs=750r/min; The PI that gas turbine set speed closed loop controls regulates algorithm to adopt increment type PI control algolithm:
e
n (k)=n
(k)-n
(k-1); Wherein, i
n(k)for the increment type PI that the k moment is corresponding controls to export given current instruction value; k
np=100, k
ni=5 be respectively increment type PI control proportional control parameter and integral control parameter; T
ns=10ms is frequency converter sampling period constant; e
n (k)for the deviate of frequency converter sampling input variable; n
(k)for frequency converter kth time rotating speed sampled value; n
(k-1)for frequency converter kth-1 rotating speed sampled value;
The PI of gas turbine set stator current closed-loop control regulates algorithm to adopt increment type PI control algolithm:
and e
i (k)=i
(k)-i
(k-1); u
(k)the increment type PI corresponding for the k moment controls output variable and trigger of frequency converter control signal, realizes the rotating speed double-closed-loop control of frequency converter; k
ip=100, k
ii=2 be respectively increment type PI control proportional control parameter and integral control parameter; T
is=3.3ms is frequency converter sampling period constant; e
i (k)for the deviate of frequency converter sampling input variable; i
(k)for frequency converter kth primary current sampled value; i
(k-1)for frequency converter kth-1 primary current sampled value;
2.: accelerate to rotate by controlling inverter bridge trigger impulse control gas turbine set after frequency converter sampling rotor-position signal; The corresponding relation that the IGBT group of rotor-position signal and inverter bridge is numbered is:
| Rotor-position | IGBT group is numbered |
| ‐30‐30 | T26、T21 |
| 30‐90 | T21、T22 |
| 90‐150 | T22、T23 |
| 150‐210 | T23、T24 |
| 210‐270 | T24、T25 |
| 270‐330 | T25、T26 |
(3) frequency converter enters non-blocking mode after receiving the stopping purging instruction of gas turbine set supervisory control system transmission; Gas turbine set stator current and exciting current are zero;
(4) frequency converter enters gas turbine set maximum output torque mode of operation after receiving the enabled instruction of gas turbine set supervisory control system transmission; Frequency converter carries out closed-loop control to gas turbine set stator current; Gas turbine set excitation system carries out closed-loop control to exciting current; During the work of gas turbine set maximum output torque, corresponding current effective value is I
n; Algorithm is regulated to adopt increment type PI control algolithm with the PI of step (2) method identical gas turbine set stator current closed-loop control, described stator current initial value i
(0)=I
n=1000A, k
ip=100, k
ii=2; Gas turbine set excitation system is to exciting current I
fdcarry out closed-loop control, exciting current I
fdbe constant current before set end voltage reaches described rated voltage, I
fd=C;
(5) set end voltage reaches the rated voltage U of frequency converter
nafter, frequency converter enters the maximum operate power mode of operation of gas turbine set; Frequency converter carries out closed-loop control to gas turbine set stator current, regulates algorithm to adopt increment type PI control algolithm, described stator current initial value i with the PI of step (4) method identical gas turbine set stator current closed-loop control
(0)=I
n; Frequency converter carries out double-closed-loop control to set end voltage, comprises set end voltage closed-loop control and gas turbine set excitation system carries out closed-loop control to exciting current; The PI of double-closed-loop control regulates algorithm to adopt increment type PI control algolithm,
wherein, i
f(k)for excitation current instruction value; k
fp=100, k
fi=2 be respectively increment type PI control proportional control parameter and integral control parameter; T
ifs=3.3ms is frequency converter sampling period constant; e
if (k)for the deviate for frequency converter sampling input variable;
(6), when the rotating speed of gas turbine set is self-sustaining speed, frequency converter Driving Torque is linearly decreased to zero; The currency I of gas turbine set stator current
(K)be set to I
(K)=I
(K-1)-Kt, K=50 ~ 300; Work as I
(K)when=0, exciting current set-point is set to zero, and now frequency converter enters non-blocking mode; After frequency converter receives the exit instruction of gas turbine set supervisory control system transmission, frequency converter enters holding state.
Fig. 2 shows heavy duty gas turbine group and starts major loop topological diagram; The AC rectification of three phase mains is become direct current by rectifier bridge, DC inverter is the alternating current of frequency-adjustable by inverter bridge again, DC flat-wave reactor be used for rectifier bridge export after flat ripple and decoupling, make the dc current waveform of main circuit of frequency converter straight, pulse little, there is current source characteristic; The rotating speed of frequency converter foundation gas turbine set and position signalling, control the frequency control of thyristor converter plant, thus produce synchronously gas turbine set dragging to be got up from zero to the variable frequency power supply of rated frequency value, and according to system command, realize the purging of combustion engine, start and exit control.
Finally should be noted that: described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.
Claims (6)
1. a variable frequency starting control method for heavy duty gas turbine group, the set end voltage of gas turbine set described in frequency converter Real-time Collection, machine end electric current and tach signal; It is characterized in that, described control method comprises the steps:
A, described frequency converter enter after receiving the purging instruction of gas turbine set supervisory control system transmission and force commutation mode of operation, carry out constant torque control to described gas turbine set;
When the speed-frequency of B, described gas turbine set is nature commutation frequency, described frequency converter enters nature commutation mode of operation; When described speed-frequency is frequency corresponding to described purging instruction, described frequency converter carries out rotating speed double-closed-loop control;
C, described frequency converter enter non-blocking mode after receiving the stopping purging instruction of described gas turbine set supervisory control system transmission;
D, described frequency converter enter gas turbine set maximum output torque mode of operation after receiving the enabled instruction of described gas turbine set supervisory control system transmission;
After E, described set end voltage reach the rated voltage of frequency converter, described frequency converter enters the maximum operate power mode of operation of gas turbine set;
When the rotating speed of F, described gas turbine set is self-sustaining speed, described frequency converter enters non-blocking mode; After described frequency converter receives the exit instruction of described gas turbine set supervisory control system transmission, described frequency converter enters holding state;
Described frequency converter in described steps A carries out closed-loop control according to the gas turbine set stator current signal sampled to described gas turbine set stator current; Control described gas turbine set by inverter bridge trigger impulse after described frequency converter sampling rotor-position signal to accelerate to rotate; Gas turbine set excitation system carries out closed-loop control to exciting current, and described exciting current was constant current before described set end voltage reaches described rated voltage;
Described natural commutation frequency in described step B is 4Hz ~ 6Hz; Described rotating speed double-closed-loop control comprises gas turbine set speed closed loop and controls and the closed-loop control of gas turbine set stator current; Control described gas turbine set by inverter bridge trigger impulse after described frequency converter sampling rotor-position signal to accelerate to rotate; Described gas turbine set excitation system carries out closed-loop control to described exciting current.
2. the variable frequency starting control method of a kind of heavy duty gas turbine group as claimed in claim 1, is characterized in that, described frequency converter is static frequency convertor.
3. the variable frequency starting control method of a kind of heavy duty gas turbine group as claimed in claim 1, is characterized in that, after described in described step C, frequency converter enters described non-blocking mode, described gas turbine set stator current and described exciting current are zero.
4. the variable frequency starting control method of a kind of heavy duty gas turbine group as claimed in claim 1, is characterized in that, frequency converter described in described step D carries out closed-loop control to described gas turbine set stator current; Described gas turbine set excitation system carries out closed-loop control to described exciting current.
5. the variable frequency starting control method of a kind of heavy duty gas turbine group as claimed in claim 1, is characterized in that, frequency converter described in described step e carries out closed-loop control to described gas turbine set stator current; Described frequency converter carries out double-closed-loop control to described set end voltage, and described double-closed-loop control comprises set end voltage closed-loop control and described gas turbine set excitation system carries out closed-loop control to described exciting current.
6. the variable frequency starting control method of a kind of heavy duty gas turbine group as claimed in claim 1, it is characterized in that, after described in described step F, frequency converter enters described non-blocking mode, when described gas turbine set stator current is linearly decreased to zero, described exciting current is zero.
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| CN104320028A (en) * | 2014-10-29 | 2015-01-28 | 南京南瑞继保电气有限公司 | Redundancy configuration system for LCI logic control panels |
| CN107666256A (en) * | 2016-07-29 | 2018-02-06 | 中国电力科学研究院 | A kind of control method of gas turbine purging |
| CN107743001B (en) * | 2017-09-27 | 2020-06-16 | 中国电力科学研究院 | Load simulation method, frequency converter, load simulator and static frequency conversion starting system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5694026A (en) * | 1994-04-13 | 1997-12-02 | European Gas Turbines Sa | Turbine generator set without a step-down gear box |
| CN101621271A (en) * | 2009-07-31 | 2010-01-06 | 国网电力科学研究院 | Control method of low-speed stage starting of static frequency conversion starting of pumped storage power station |
| CN102570934A (en) * | 2011-01-01 | 2012-07-11 | 国网电力科学研究院 | Start control method for working condition excitation system of static frequency converter of pumped-storage aggregate set |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07245998A (en) * | 1994-03-09 | 1995-09-19 | Hitachi Ltd | Starter of generation facility provided with brushless exciter |
-
2013
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5694026A (en) * | 1994-04-13 | 1997-12-02 | European Gas Turbines Sa | Turbine generator set without a step-down gear box |
| CN101621271A (en) * | 2009-07-31 | 2010-01-06 | 国网电力科学研究院 | Control method of low-speed stage starting of static frequency conversion starting of pumped storage power station |
| CN102570934A (en) * | 2011-01-01 | 2012-07-11 | 国网电力科学研究院 | Start control method for working condition excitation system of static frequency converter of pumped-storage aggregate set |
Non-Patent Citations (2)
| Title |
|---|
| 况明伟.大型静止变频装置(SFC)在400MW级燃气轮机组起动中的应用.《百度文库》.2011,摘要,正文第2节至第5节,图1.1,1.2. * |
| 燃气_蒸汽联合循环机组静止变频启动矢量控制;桑丙玉 等;《电气传动》;20111231;全文 * |
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