CN102095582A - Method for measuring and acquiring accumulative work time with dynamometry load rejection test for steam turbo generator unit - Google Patents
Method for measuring and acquiring accumulative work time with dynamometry load rejection test for steam turbo generator unit Download PDFInfo
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- 238000009825 accumulation Methods 0.000 claims description 18
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Abstract
The invention relates to a method for measuring and acquiring accumulative work time with a dynamometry load rejection test for a steam turbo generator unit, which enhances the test accuracy, simplifies the test process and reduces the operating difficulty. The method comprises the steps of: 1, the determination of valve static closing time: recording the closing delay time T0 of certain specified high pressure control valve; 2, the implementation of the dynamometry load rejection test: in case that a generator unit is not in splitting with a power grid, forcibly enabling an overspeed protection controller (OPC) of a steam turbine to implement the dynamometry load rejection test; 3, the determination of an accumulative work timing zero point t0: on an automatic record curve of the dynamometry load rejection test, advancing the operation starting time of the specified high pressure control valve by T0 to serve as the accumulative work timing zero point t0; 4, the determination of an accumulative work timing endpoint tm: taking the time when the integral value of a power curve reaches the highest point, as the accumulative work timing endpoint tm; and 5, the calculation of rotor ascending amount according to a rotor kinetic equilibrium equation of the steam turbo generator unit.
Description
Technical field
The present invention relates to a kind of Turbo-generator Set and measure method with dynamometry load dump test accumulation working application time.
Background technology
The purpose of load dump test is the dynamic perfromance of examination steam turbine control system, the conventional method load dump test is after steam turbine gets rid of specified electric load, write down its highest maximum momentary speed and should not make the emergency overspeed governor action, therefore the conventional method removal of load is the worst a kind of operating condition of Turbo-generator Set, also be to the acid test of steam turbine control system, device security is had certain threat; And dynamometry removal of load simulation conventional method removal of load operating condition, at unit not under the off-the-line situation, get rid of the vapour load of unit suddenly, measure the change curve of generator active power after this, calculate generator output electric weight, calculate the maximum speed that Steam Turbine can reach in view of the above under regular situation.The dynamometry load dump test has easy, the safe characteristics of method, and has listed the load dump test guide rule of China in, the reception test of the Turbo-generator Set that generally can be used for newly going into operation.Because this is a kind of indirect load dump test method, how can measure generator exactly and in process of the test, effectively accumulate working application time, be the key of this test method thereby calculate generator accumulation output electric weight.
Summary of the invention
Purpose of the present invention is exactly in order to address the above problem, and provides a kind of Turbo-generator Set to accumulate working application time with the dynamometry load dump test and measures method, has not only improved accuracy of test, but also has simplified test process, reduced operation easier.
For achieving the above object, the present invention adopts following technical scheme:
A kind of Turbo-generator Set measures method with dynamometry load dump test accumulation working application time, and its step is:
1, the mensuration of static shut-in time of porthole
1) test is carried out under the steam turbine stationary state.
2) main inlet throttle-stop valve standard-sized sheet, high, middle pressure are regulated porthole and are in the rated load position, and operate generator main switch tripgear makes its tripping operation, close main inlet throttle-stop valve and high, middle pressure adjusting porthole rapidly, write down generator main switch trip signal automatically
To the overall process time that porthole is closed;
3) on automatic recording curve, look into and get by generator main switch trip signal
Be issued to T time delay that a certain appointment high voltage adjusting porthole begins to move
0
2, dynamometry load dump test test
1) unit moves under normal mode, directly carries out 100% running test;
2) unit not with the situation of grid disconnection under, force unit overspeed protection system OPC action, close height rapidly, middle pressure is regulated porthole and is in closed condition always, when the generator reverse power tripping move, the load dump test end;
3) write down generator active power, above-mentioned appointment high voltage adjusting porthole stroke, unit speed protection system OPC actuating signal automatically;
3, accumulation acting timing t at zero point
0Determine
On the automatic recording curve of dynamometry load dump test, will specify the high voltage adjusting porthole to begin to put off slow time T before actuation time
0As accumulation acting timing t at zero point
0
4, the stop t of accumulation acting timing
mDetermine
In the dynamometry load dump test process, tangible oscillation of power will inevitably occur, powertrace may repeatedly be crossed zero axle, and the time that the integrated value of powertrace arrives peak is the stop t that accumulates the acting timing
m
5, extrapolate the rotor amount of ascending to heaven according to rotor of turbogenerator set kinetic energy balancing equation.
Principle of the present invention is:
Unit not with the situation of grid disconnection under, start unit overspeed protection system (OPC), can close height rapidly, middle pressure is regulated porthole, the non-return flap that draws gas, cut off to the steam turbine steam supply.Usually have two loops can start unit OPC function, its principle is as follows:
(1) pressure steam pressure IEP＞30% in, promptly unit operation when 30% load is above, generator main switch trip signal
When occurring simultaneously, start trigger, output OPC complete shut-down signal removes to close high voltage adjusting porthole GV, middle pressure is regulated porthole IV.Delay time after 5～10 seconds rotation speed n＜103%, trigger reset.
(2) in any case, as long as rotation speed n＞103% closes GV and IV, n＜103% o'clock recovery.
Because unit is under rated loan condition, rotating speed and pressure signal are detected by OPC hardware controls plate and internal logic is judged, steering logic adopts three to get two modes, therefore needs simulation artificially or forced signal to trigger unit OPC function: following dual mode is arranged usually:
One, simulation generator main switch trip signal
Behind the generator main switch trip, the electrohydraulic steam turbine controlling system of unit (DEH) will start OPC, close height, middle pressure adjusting porthole rapidly.According to these characteristics, during the dynamometry load dump test, artificially send out one group of " generator main switch trip to the electrohydraulic control system (DEH) of unit
" signal; make OPC action; close height, middle pressure is regulated porthole etc.; it should be noted that; value of setting action time of OPC should be prolonged before the test and do not remove reverse-power protection, thus unlatching again after height, middle pressure are regulated porthole and closed, behind about 10s; when the generator reverse power tripping moves, the load dump test end.
Two, force the OPC action
Force the OPC action, close height, middle pressure adjusting porthole rapidly and remain in closed condition always, make height, middle pressure regulate porthole servo-valve instruction zero clearing when starting the OPC function but should logically be implemented in before the test, otherwise unload oil condition and cause that system oil is forced down and trip owing to each adjusting porthole servo-valve is in simultaneously.
The parameter of record mainly contains: unit active power signal, height, middle pressure are regulated porthole aperture signal, OPC actuating signal etc.
If surplus vapour is done function and is made steam turbine speed fling lifting Δ n after the steam turbine removal of load,
Then have:
In the formula: J-rotor moment of inertia, kgm
2
t
0-test zero-time, s;
t
m-active power is reduced to 0 time, s;
P-tests initial active power, kW;
P
0-rated power kW;
N-tests initial rotating speed, r/min;
n
0-rated speed, r/min.
" Steam Turhine Adjustment control system test guide rule " (DL/T 711-1999) regulation is tested zero-time as the zero point of accumulating working application time, as shown in Figure 1, and when generator main switch trip signal
When signal sends, the electrohydraulic steam turbine controlling system of unit (DEH) will start OPC, close height, middle pressure adjusting porthole rapidly, therefore,
Sending constantly of signal is " zero " some t that clocks of power trace curve
0The front is mentioned, as one of method, during the dynamometry load dump test, artificially send out one group of " the generator main switch trips " simulating signal to the electrohydraulic steam turbine controlling system DEH of unit, make the OPC action, close height, the middle pressure regulated porthole etc., meanwhile, measure and record generator outlet active power, because of the auxiliary contact limited amount of isolating switch, this signal can only be sent to electrohydraulic steam turbine controlling system systems such as (DEH) again by auxiliary reclay, the time-delay that has so just caused signal to transmit, although can eliminate the time delay of auxiliary reclay, this method more complicated, and unavoidably cause cumulative errors.And take to force the method for OPC action to close height, middle pressure adjusting porthole rapidly and be in closed condition always, all take OPC solenoid valve actuating signal as the test starting point in a lot of data, this does not obviously consider to start the time delay of OPC function, by formula (1) as seen, if lower limit of integral t
0Change, integrated value just changes thereupon, " zero " some t that clocks of powertrace
0, will directly influence test findings accurately whether, because reach at full capacity at generator power during this period of time, very little time-delay can produce bigger error, and this error is (dangerous partially) less than normal direction.
It is the precondition of load dump test that the static shut-in time of porthole meets the requirements, therefore when doing static shut-in time of porthole test, accurate recording generator main switch trip signal
Signal enabling OPC function is until the time that begins to move, i.e. high voltage adjusting porthole turn-off delay time (see figure 3), and under the dynamic and static operating mode of steam turbine, time delay T
0Can think constantly, in dynamometry load dump test process,, will specify the high voltage adjusting porthole to begin to put off slow time T before actuation time owing to write down the course of action of the high voltage adjusting porthole of a certain appointment exactly
0As accumulation acting timing t at zero point
0
Proposing the power lower limit of integral in " Steam Turhine Adjustment control system test guide rule " (DL/T 711-1999) is that electric power drops to for zero time, and in the dynamometry load dump test process, tangible oscillation of power will inevitably appear, powertrace may repeatedly be crossed zero axle, active power if also occur on the occasion of, corresponding integrated curve still can rise, corresponding unit accumulative total generated energy is still increasing, according to formula (1), the unit transient rotative speed still can be ascended to heaven, and peak occurs until integrated curve.Therefore, the integrated value of powertrace arrives the time of peak as powertrace lower limit of integral point t
m, see Fig. 2.
The invention has the beneficial effects as follows:
1, a kind of test and calculating new method at the Turbo-generator Set dynamometry removal of load with OPC function proposed.
Unit not with the situation of grid disconnection under, force the OPC action to carry out the dynamometry load dump test, process of the test is simple and reliable; The method of taking porthole envelope test and dynamometry load dump test to combine measures the accumulation working application time, has improved measuring accuracy.
2, this method had both been simulated conventional method removal of load operating condition comparatively exactly, had simplified the modification of steering logic simultaneously again, had guaranteed the reliability of process of the test and the authenticity of test findings.
Description of drawings
Fig. 1 is OPC action logic figure;
Fig. 2 is a dynamometry load dump test curve;
Fig. 3 is the static closed curve of closing of a certain appointment high voltage adjusting porthole.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing and embodiment.
One, the mensuration of static shut-in time of porthole
1) test is carried out under the steam turbine stationary state.
2) main inlet throttle-stop valve standard-sized sheet, high, middle pressure are regulated porthole and are in the rated load position, and operate generator main switch tripgear makes its tripping operation, close main inlet throttle-stop valve and high, middle pressure adjusting porthole rapidly, write down the instruction of generator main switch trip automatically
Be issued to the overall process time that porthole is closed.
3) on automatic recording curve, look into to get and instruct by the generator main switch trip
Be issued to T time delay that a certain appointment high voltage adjusting porthole begins to move
0, see Fig. 3.
Two, dynamometry load dump test test
1) unit moves under normal modes such as nominal parameter, the whole inputs of heat regenerative system, directly carries out 100% running test.
2) unit not with the situation of grid disconnection under, adopt three-phase chopper switch, the one tunnel connects the OPC control loop; One the tunnel offers surveying instrument; One road connection is jumped boiler milling system (MFT); Interim change electrohydraulic steam turbine controlling system (DEH) logic makes height when starting the OPC function, middle pressure regulate the servo-valve instruction zero clearing of porthole, to avoid since each adjusting porthole servo-valve be in simultaneously and unload oil condition and cause that system oil is forced down and trip.The back OPC that closes a floodgate moves, and closes height, middle pressure adjusting porthole rapidly and is in closed condition always, and when the generator reverse power tripping moved, the load dump test process finished.
3) write down generator active power, aforementioned appointment high voltage adjusting porthole stroke, OPC actuating signal etc. automatically.
Three, the accumulation working application time determines
See Fig. 2, on the automatic recording curve of dynamometry load dump test, will specify the high voltage adjusting porthole to begin to put off slow time T before actuation time
0Be accumulation acting timing t at zero point
0, the time that the integrated value of powertrace arrives peak is the stop t that accumulates the acting timing
m
Four, extrapolate the rotor amount of ascending to heaven according to rotor of turbogenerator set kinetic energy balancing equation
If surplus vapour is done function and is made steam turbine speed fling lifting Δ n after the steam turbine removal of load,
Then have:
In the formula: J-rotor moment of inertia, kgm
2
t
0-test zero-time, s;
t
m-active power is reduced to 0 time, s;
P-tests initial active power, kW;
P
0-rated power kW;
N-tests initial rotating speed, r/min;
n
0-rated speed, r/min.
For example, certain unit rotor moment of inertia is: J=34645kgm
2, effectively add up to do work W=187290kJ in the removal of load process
Then steam turbine is calculated the highest maximum momentary speed (adding rotating speed and power correction)
Δn＝(30.42/34645)×(n
0/n)×(p
0/p)×187290
＝(30.42/34645)×(3000/3000)×(300/299)×187290≈165(r/min)。
According to reckoning, the unit maximum speed can be to 3165r/min, and less than unit tripping protection setting value 3300r/min, test findings meets " Steam Turhine Adjustment control system test guide rule " requirement, and therefore, this load dump test is successful.
Claims (3)
1. a Turbo-generator Set measures method with dynamometry load dump test accumulation working application time, it is characterized in that its step is:
1) mensuration of static shut-in time of porthole
1-1) test is carried out under the steam turbine stationary state;
1-2) main inlet throttle-stop valve standard-sized sheet, high, middle pressure are regulated porthole and are in the rated load position, and operate generator main switch tripgear makes its tripping operation, close main inlet throttle-stop valve and high, middle pressure adjusting porthole rapidly, write down generator main switch trip signal automatically
To the overall process time that porthole is closed;
1-3) on automatic recording curve, look into and get by generator main switch trip signal
Be issued to T time delay that a certain appointment high voltage adjusting porthole begins to move
0
2) dynamometry load dump test test
2-1) unit moves under normal mode, directly carries out 100% running test;
2-2) unit not with the situation of grid disconnection under, force unit overspeed protection system OPC action, close height rapidly, middle pressure is regulated porthole and is in closed condition always, when the generator reverse power tripping move, the load dump test end;
2-3) write down generator active power, above-mentioned appointment high voltage adjusting porthole stroke, unit speed protection system OPC actuating signal automatically;
3) accumulation acting timing t at zero point
0Determine
On the automatic recording curve of dynamometry load dump test, will specify the high voltage adjusting porthole to begin to put off slow time T before actuation time
0As accumulation acting timing t at zero point
0
4) the stop t of accumulation acting timing
mDetermine
The time that arrives peak with the integrated value of powertrace is the stop t of accumulation acting timing
m
5) extrapolate the rotor amount of ascending to heaven according to rotor of turbogenerator set kinetic energy balancing equation.
2. Turbo-generator Set as claimed in claim 1 measures method with dynamometry load dump test accumulation working application time, it is characterized in that, in the described step 1), steam turbine stationary state following time, should regulate, security system debugging finishes, oil is qualified, oil pressure, oily temperature are in normal operating condition.
3. Turbo-generator Set as claimed in claim 1 measures method with dynamometry load dump test accumulation working application time, it is characterized in that, described step 2-2) in, should logically be implemented in before the test and make the servo-valve instruction zero clearing of respectively regulating porthole when starting the OPC function.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508163A (en) * | 2011-11-25 | 2012-06-20 | 中联重科股份有限公司 | Method, system and device for detecting load dump of portable generator |
| CN102540077A (en) * | 2012-02-16 | 2012-07-04 | 海南电网公司 | Method for judging load shedding of electric power system unit on basis of local electric quantity |
| CN102566419A (en) * | 2012-02-17 | 2012-07-11 | 北京国电蓝天节能科技开发有限公司 | Dynamic surface control method for opening of main throttle valve of steam turbine generator |
| CN105157986A (en) * | 2015-06-17 | 2015-12-16 | 广东电网有限责任公司电力科学研究院 | Reliability monitoring method for hot-end component of gas turbine |
| CN107607261A (en) * | 2017-09-19 | 2018-01-19 | 广西电网有限责任公司电力科学研究院 | A kind of method for obtaining electric generating set rotor rotary inertia |
| CN111623988A (en) * | 2020-05-28 | 2020-09-04 | 国网河北省电力有限公司电力科学研究院 | Safety evaluation method for load shedding test of high-position-arrangement steam turbine set |
| CN113361107A (en) * | 2021-06-08 | 2021-09-07 | 中国大唐集团科学技术研究院有限公司中南电力试验研究院 | Static simulation prediction method for rotating speed flying rise of steam turbine after load shedding |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2739361Y (en) * | 2004-07-14 | 2005-11-09 | 东方汽轮机厂 | Steam turbine oil switch dynamic-acting load overspeed safety protecting system |
| CN200947065Y (en) * | 2006-02-23 | 2007-09-12 | 周丹 | High rate data record analyzer of steam machine load-dropping test |
| CN101105520B (en) * | 2007-08-08 | 2010-05-19 | 陕西电力科学研究院 | Generating set primary frequency regulation test method and emulating instrument for test |
-
2010
- 2010-12-01 CN CN2010105679769A patent/CN102095582B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2739361Y (en) * | 2004-07-14 | 2005-11-09 | 东方汽轮机厂 | Steam turbine oil switch dynamic-acting load overspeed safety protecting system |
| CN200947065Y (en) * | 2006-02-23 | 2007-09-12 | 周丹 | High rate data record analyzer of steam machine load-dropping test |
| CN101105520B (en) * | 2007-08-08 | 2010-05-19 | 陕西电力科学研究院 | Generating set primary frequency regulation test method and emulating instrument for test |
Non-Patent Citations (3)
| Title |
|---|
| 《东北电力技术》 19980930 赵文波 用测功法进行甩负荷试验的实践 , 第09期 2 * |
| 《山东电力技术》 20060925 李福尚等 甩汽负荷试验以及应该注意的几个问题 , 第05期 2 * |
| 《汽轮机技术》 19990610 于达仁等 汽轮发电机测功法甩负荷试验算法误差来源 , 第03期 2 * |
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|---|---|---|---|---|
| CN102508163A (en) * | 2011-11-25 | 2012-06-20 | 中联重科股份有限公司 | Method, system and device for detecting load dump of portable generator |
| CN102508163B (en) * | 2011-11-25 | 2014-06-04 | 中联重科股份有限公司 | Method, system and device for detecting load dump of portable generator |
| CN102540077A (en) * | 2012-02-16 | 2012-07-04 | 海南电网公司 | Method for judging load shedding of electric power system unit on basis of local electric quantity |
| CN102566419A (en) * | 2012-02-17 | 2012-07-11 | 北京国电蓝天节能科技开发有限公司 | Dynamic surface control method for opening of main throttle valve of steam turbine generator |
| CN102566419B (en) * | 2012-02-17 | 2014-03-26 | 北京国电蓝天节能科技开发有限公司 | Dynamic surface control method for opening of main throttle valve of steam turbine generator |
| CN105157986A (en) * | 2015-06-17 | 2015-12-16 | 广东电网有限责任公司电力科学研究院 | Reliability monitoring method for hot-end component of gas turbine |
| CN107607261A (en) * | 2017-09-19 | 2018-01-19 | 广西电网有限责任公司电力科学研究院 | A kind of method for obtaining electric generating set rotor rotary inertia |
| CN111623988A (en) * | 2020-05-28 | 2020-09-04 | 国网河北省电力有限公司电力科学研究院 | Safety evaluation method for load shedding test of high-position-arrangement steam turbine set |
| CN113361107A (en) * | 2021-06-08 | 2021-09-07 | 中国大唐集团科学技术研究院有限公司中南电力试验研究院 | Static simulation prediction method for rotating speed flying rise of steam turbine after load shedding |
| CN113361107B (en) * | 2021-06-08 | 2023-04-07 | 中国大唐集团科学技术研究院有限公司中南电力试验研究院 | Static simulation prediction method for rotating speed flying rise of steam turbine after load shedding |
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Effective date of registration: 20121217 Address after: 250002 Ji'nan City Central District, Shandong, No. 2 South Road, No. 500 Patentee after: SHANDONG ELECTRIC POWER Research Institute Patentee after: State Grid Corporation of China Address before: 250002 Ji'nan City Central District, Shandong, No. 2 South Road, No. 500 Patentee before: SHANDONG ELECTRIC POWER Research Institute |
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Address after: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee after: Shandong Electric Power Research Institute Patentee after: State Grid Corporation of China Address before: 250002, No. 500, South Second Ring Road, Shizhong District, Shandong, Ji'nan Patentee before: Shandong Electric Power Research Institute Patentee before: State Grid Corporation of China |
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Address after: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee after: SHANDONG ELECTRIC POWER Research Institute Patentee after: STATE GRID CORPORATION OF CHINA Address before: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee before: SHANDONG ELECTRIC POWER Research Institute Patentee before: State Grid Corporation of China |
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Effective date of registration: 20220127 Address after: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee after: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Patentee after: STATE GRID CORPORATION OF CHINA Address before: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee before: SHANDONG ELECTRIC POWER Research Institute Patentee before: STATE GRID CORPORATION OF CHINA |