CN104747243A - Sliding parameter shutdown method for gas-steam combined cycle unit - Google Patents
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- 238000000034 method Methods 0.000 title claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 230000001105 regulatory effect Effects 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 13
- 238000003303 reheating Methods 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims description 68
- 239000003517 fume Substances 0.000 claims description 12
- 238000002485 combustion reaction Methods 0.000 claims description 11
- 239000003814 drug Substances 0.000 claims description 9
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 4
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- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 7
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- 230000008569 process Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000004148 unit process Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
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- 230000003068 static effect Effects 0.000 description 1
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Abstract
The invention discloses a sliding parameter shutdown method for a gas-steam combined cycle unit. The sliding parameter shutdown method comprises the following steps that S1, auxiliary steam is switched into the gas-steam combined cycle unit for medium pressure steam supply; S2, the load of the gas-steam combined cycle unit is reduced to 150 MW, and the opening degree of a high-pressure attemperation water regulating valve and a reheating attemperation water regulating valve is controlled, so that the temperature of high-pressure main steam and the temperature of reheated steam range from 540 DEG C to 545 DEG C; S3, the load of the gas-steam combined cycle unit is reduced to 140 MW, and a medium-pressure steam combining valve and a low-pressure steam inlet valve are closed manually. The method has the advantages that the sliding parameter shutdown method is utilized, the metal temperature of a steam turbine (2) is reduced to 371 DEG C from 530 DEG C at the normal shutdown moment, the time of shutting down a jigger is shortened to four days from the normal shutdown time of seven days, and the benefits of the gas-steam combined cycle unit are greatly improved.
Description
Technical field
The present invention relates to power plants generating electricity technical field, more particularly, relate to a kind of gas-steam combined cycle set shutdown at sliding parameters method.
Background technique
Gas-steam combined cycle set is made up of gas turbine, steam turbine, exhaust heat boiler and generator etc.Gas turbine, steam turbine and generator are by the complete MK VI Systematical control provided of GE company, and the decentralized control system (DCS) that exhaust heat boiler and supplementary equipment are provided by Xi Wu Emerson company of the U.S. controls.Particularly, gas turbine is made up of the axial-flow compressor of 18 grades, the combustion system be made up of 18 low-NOx combustors, 3 grades of turbines and a combustion engine auxiliary system.Steam turbine model is #158 (D10 Optimization-type), is three pressures, resuperheat, single shaft, twin-cylinder double flow, (impulse is without drawing gas) pure condensate formula unit.Steam turbine high intermediate pressure cylinder is HP-IP combined casing, and low pressure (LP) cylinder is the downward steam discharge form of double-flow.Exhaust heat boiler (HRSG) model is NG-109FA-R, three pressures of being produced by HangZhou Boiler Group Co., Ltd, resuperheat, horizontal, without afterburning, Natural Circulation HRSG.Economizer module is had before high, medium and low three drums, evaporator module is had under drum, drum outlet has superheater module, the vapor mixing of steam turbine high-pressure cylinder steam discharge and middle pressure superheater outlet arrives intermediate pressure cylinder work done after reheater heating, by one-level cooling water desuperheat, high-pressure superheater ensures that high pressure main steam temperature does not transfinite, reheated steam has one-level cooling water to control reheat steam temperature in predetermined range.Low-pressure coal saver has recirculating pump to improve low-pressure coal saver inlet water temperature, prevents that flue gas low-temperature corrodes.There is communicating door between high pressure drum and mesolow drum, steam can be supplemented by upper level drum to next stage drum, start quickly speed when starting.
Gas-steam combined cycle set is positioned peaking operation in electrical network, opens the method for operation of stopping night daytime more, and the corresponding equipment inspection cycle is also short.Body inspection will be carried out after shutdown; compressor blade checks; import adjustable guide vane checks; the inspection of combustion gas turbine stator blade all needs to carry out when macro-axis is static; and according to the regulation of equipment manufacturers; between gas turbine wheel, temperature is at 65 DEG C, and steam turbine metal temperature can stop continuous jiggering below 260 DEG C.
In prior art, although gas turbine temperature can drag mode to accelerate cooling by cold, steam turbine is not equipped with quickly cooling device, and nature can only be leaned on to cool.In general, car of stopping quotation on the exchange, approximately need to carry out after 7 days in shutdown, it expends time in longer, reduces the benefit of gas-steam combined cycle set.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, provides a kind of shutdown at sliding parameters method that can increase substantially the benefit of gas-steam combined cycle set.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of gas-steam combined cycle set shutdown at sliding parameters method, comprise the following steps:
S1, auxiliary steam is switched to the supply of gas-steam combined cycle set medium pressure steam;
S2, the load of gas-steam combined cycle set is reduced to 150MW, control the aperture of high pressure Desuperheating water regulating valve and reheating Desuperheating water regulating valve, be in 540 DEG C ~ 545 DEG C to make high pressure main steam temperature and reheat steam temperature;
S3, the load of gas-steam combined cycle set is reduced to 140MW, pressure in manual-lock porthole and low pressure admission door;
S4, after intermediate pressure cylinder and low pressure (LP) cylinder move back vapour, slow down the load shedding speed of gas-steam combined cycle set, control at 560 DEG C ~ 565 DEG C to make the temperature of exhaust fume of gas turbine;
S5, be 8.0MPa by the pressure setting of high pressure turbine by valve, manually exit initial steam pressure at gas turbine control system interface and control, keep high pressure main stop valve and middle pressure main stop valve to be in full-gear;
S6, drop into manual temperature matcher in decentralized control system, the coupling temperature of Temperature Matching program is set as 560 DEG C;
S7, after Temperature Matching condition in gas turbine control system meets, drop into the Temperature Matching program in gas turbine control system;
The aperture of the Temperature Matching value in S8, manually reduction gas turbine control system and control high pressure Desuperheating water regulating valve, lower than steam turbine metal temperature 5 DEG C ~ 10 DEG C to control high pressure main steam temperature, and the speed that high pressure main steam temperature declines is less than 1.0 DEG C/min;
The temperature of exhaust fume of S9, maintenance gas turbine is constant, control the aperture of high pressure Desuperheating water regulating valve and reheating Desuperheating water regulating valve, 10 DEG C are reduced to make high pressure main steam temperature, and the Temperature Matching value in gas turbine control system is reduced by 20 DEG C, then the combustion mode of gas turbine is switched to time guide's premix by guide's premix;
S10, closedown high pressure Desuperheating water regulating valve, the Temperature Matching value in adjustment gas turbine control system is to make high pressure main steam temperature lower than steam turbine metal temperature 5 DEG C ~ 10 DEG C;
S11, when high pressure main steam temperature is down to below 480 DEG C, add octadecylamine medicament at condensate pump entrance;
S12, the Temperature Matching value reduced in gas turbine control system, make high pressure Stream temperature degree be down to 440 DEG C;
S13, steam turbine control inerface in gas turbine control system, be manually set to zero by steam turbine target load;
S14, closedown high pressure main stop valve, exit the Temperature Matching program in gas turbine control system, when the import adjustable guide vane of gas turbine closes to the aperture of 49 °, sends and shut down order;
S15, after high-pressure cylinder and intermediate pressure cylinder move back vapour, low pressure (LP) cylinder cooling steam is switched to auxiliary steam supply;
S16, gas-steam combined cycle set off-the-line.
In gas-steam combined cycle set shutdown at sliding parameters method of the present invention; in described step S7; described Temperature Matching condition is that the rotating speed benchmark (TNR) of gas turbine is greater than 100.4%, and the delivery temperature of gas turbine is between 371 DEG C-566 DEG C.
Implement gas-steam combined cycle set shutdown at sliding parameters method of the present invention, there is following beneficial effect: (1) utilizes described shutdown at sliding parameters method, steam turbine metal temperature is down to 371 DEG C by 530 during orderly closedown DEG C, the stoppage in transit jiggering time shortened to 4 days by 7 days of orderly closedown, improve the benefit of gas-steam combined cycle set significantly; (2) by described shutdown at sliding parameters method, add octadecylamine medicament when control high pressure main steam is below 480 DEG C to maintain the steam line in thermodynamic system, avoid the corrosion of gas-steam combined cycle set thermodynamic system pipeline widely, extend the working life of gas-steam combined cycle set, decrease daily operation maintenance expense; (3) described shutdown at sliding parameters the method is without the need to additionally installing other equipment in implementation process, more without the need to carrying out technological transformation to equipment, utilizes existing equipment completely, can be implemented by operation improving method; (4) described shutdown at sliding parameters method is easy and simple to handle, and can implement the training that site operation personnel is correlated with, cost is low, and implementation result is good; (5) described shutdown at sliding parameters method greatly increases the peaking performance of gas-steam combined cycle set; especially at summer peak meeting, meet between the kurtosis teletostage; effectively support the peak regulation of electrical network, turn improve the ability of unit process unusual service condition simultaneously.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the shutdown at sliding parameters theory diagram of the gas-steam combined cycle set that present pre-ferred embodiments provides.
Embodiment
In order to there be understanding clearly to technical characteristics of the present invention, object and effect, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
As shown in Figure 1, preferred embodiment of the present invention provides a kind of gas-steam combined cycle set shutdown at sliding parameters method, for accelerating dead time to improve the benefit of gas-steam combined cycle set.Gas-steam combined cycle set comprises gas turbine 1, steam turbine 2, exhaust heat boiler 3 and generator (non-label).Gas turbine 1, steam turbine 2, exhaust heat boiler 3 and generator are structure common in prior art, and the Placement between gas turbine 1, steam turbine 2, exhaust heat boiler 3 and generator is also prior art, does not repeat them here.
Particularly, gas-steam combined cycle set shutdown at sliding parameters method comprises the following steps:
S1, auxiliary steam is switched to the supply of gas-steam combined cycle set medium pressure steam.
In this step, when the outlet side of the middle pressure drum 31 in exhaust heat boiler 3 is connected with the female pipe 4 of auxiliary steam, auxiliary steam can be realized and be switched to the supply of gas-steam combined cycle set medium pressure steam, to guarantee that in gas-steam combined cycle set stoppage in transit process, the supply of shaft seal (not shown) vapor pressure is stablized, gas-steam combined cycle set can be stopped transport safely.
S2, the load of gas-steam combined cycle set is reduced to 150MW, control the aperture of high pressure Desuperheating water regulating valve 5 and reheating Desuperheating water regulating valve 6, be in 540 DEG C ~ 545 DEG C to make high pressure main steam temperature and reheat steam temperature.
In this step, when the load of gas-steam combined cycle set reduces to 150MW, control the aperture of high pressure Desuperheating water regulating valve 5 and reheating Desuperheating water regulating valve 6 to keep sufficient high pressure spray water flux and reheating spray water flux, under satisfied safe technical specification, the temperature of high pressure main steam and reheated steam can be reduced, thus reach the object of the metal temperature reducing steam turbine 2.
S3, the load of gas-steam combined cycle set is reduced to 140MW, pressure in manual-lock porthole 7 and low pressure admission door 8.
In this step, pressure in manual-lock and porthole 7 and low pressure admission door 8 time, make the intermediate pressure cylinder 22 in steam turbine 2 exit medium pressure steam admission, low pressure (LP) cylinder 23 exits low pressure steam admission.
S4, after intermediate pressure cylinder 22 and low pressure (LP) cylinder 23 move back vapour, slow down the load shedding speed of gas-steam combined cycle set, control at 560 DEG C ~ 565 DEG C to make the temperature of exhaust fume of gas turbine 1.
In this step, by controlling the load shedding speed of gas-steam combined cycle set, the temperature of exhaust fume lowering speed of gas turbine 1 can be slowed down, the temperature of exhaust fume of gas turbine 1 is controlled at 560 DEG C ~ 565 DEG C.
S5, be 8.0MPa by the pressure setting of high pressure turbine by valve 9, manually exit initial steam pressure at gas turbine 1 control system interface and control, keep high pressure main stop valve 11 and middle pressure main stop valve 12 to be in full-gear.
Implement this step, can effectively prevent high pressure main stop valve 11 from closing.In the present embodiment, middle pressure main stop valve 12 is provided with two, presses main stop valve 12 to be connected to two steam inlets of intermediate pressure cylinder 22 in two.
S6, drop into manual temperature matcher in decentralized control system (not shown), the coupling temperature of Temperature Matching program is set as 560 DEG C.
Implementing this step, can be that the Temperature Matching program of gas turbine 1 drops into ready.
S7, after Temperature Matching condition in gas turbine 1 control system meets, drop into the Temperature Matching program in gas turbine 1 control system.
In this step, Temperature Matching condition is that the rotating speed benchmark (being also TNR) of gas turbine 1 is greater than 100.4%, and the delivery temperature of gas turbine 1 is less than 570 DEG C.By the temperature of exhaust fume of the Temperature Matching program control gas turbine 1 in gas turbine 1 control system, thus control the temperature of high pressure main steam, and then reach the object of the metal temperature controlling steam turbine 2.
The aperture of the Temperature Matching value in S8, manually reduction gas turbine 1 control system and control high pressure Desuperheating water regulating valve 5, with control high pressure main steam temperature lower than steam turbine 2 metal temperature 5 DEG C ~ 10 DEG C, and high pressure main steam temperature decline speed be less than 1.0 DEG C/min.
In this step, by monitoring the stress of steam turbine 2, with the cooling rate of the temperature and steam turbine 2 metal temperature that control high pressure main steam.
The temperature of exhaust fume of S9, maintenance gas turbine 1 is constant, control the aperture of high pressure Desuperheating water regulating valve 5 and reheating Desuperheating water regulating valve 6,10 DEG C are reduced to make high pressure main steam temperature, and the Temperature Matching value in gas turbine 1 control system is reduced by 20 DEG C, then the combustion mode of gas turbine 1 is switched to time guide's premix by guide's premix.
In this step, before the combustion mode of gas turbine 1 switches to time guide's premix by guide's premix, gas turbine 1 temperature of exhaust fume should be kept constant, first the aperture of high pressure Desuperheating water regulating valve 5 and reheating Desuperheating water regulating valve 6 is controlled, high pressure main steam temperature is reduced by 10 DEG C, then the Temperature Matching value in gas turbine 1 control system is reduced by 20 DEG C, now check whether burning switches normal, monitor whether combustion mode has the phenomenon of switchback, otherwise the Temperature Matching value reduced again in gas turbine 1 control system, this process high pressure spray water flux should coordinate minimizing, high pressure main steam temperature fluctuation should be avoided.Pass through aforesaid operations, when the combustion mode of gas turbine 1 switches to secondary guide's premix by guide's premix, the burning reference temperature of gas turbine 1 can fluctuate, combustion mode may be caused constantly to switch, therefore, before combustion mode switches, directly the temperature of exhaust fume setting value of gas turbine 1 is escaped the dead band that combustion mode switches.
S10, close high pressure Desuperheating water regulating valve 5, the Temperature Matching value in adjustment gas turbine 1 control system with make high pressure main steam temperature lower than steam turbine 2 metal temperature 5 DEG C ~ 10 DEG C.
In this step, because high pressure cooling water consumption is very little, rely on gas turbine 1 temperature of exhaust fume can meet the requirement controlling high pressure main steam temperature.
S11, when high pressure main steam temperature is down to below 480 DEG C, add octadecylamine medicament at condensate pump 13 entrance.
In this step, add octadecylamine medicament when control high pressure main steam is below 480 DEG C to maintain the steam line in thermodynamic system, avoid the corrosion of gas-steam combined cycle set thermodynamic system pipeline widely, extend the working life of gas-steam combined cycle set, decrease daily operation maintenance expense.Octadecylamine medicament is medicament common in prior art, does not repeat them here.
S12, the Temperature Matching value reduced in gas turbine 1 control system, make high pressure Stream temperature degree be down to 440 DEG C.
In this step, when reducing the Temperature Matching value in gas turbine 1 control system, octadecylamine medicament can be made to play one's part to the full, and generate protective film at main steam line tube wall.
S13, steam turbine 2 control inerface in gas turbine 1 control system, be manually set to zero by steam turbine 2 target load.
In this step, in high pressure main stop valve 11 closing process, can guarantee that flue-gas temperature no longer declines.
S14, closedown high pressure main stop valve 11, exit the Temperature Matching program in gas turbine 1 control system, when the import adjustable guide vane 10 of gas turbine 1 closes to the aperture of 49 °, sends and shut down order.
Implement this step, the normal stoppage in transit of gas-steam combined cycle set can be guaranteed.
S15, after high-pressure cylinder 21 and intermediate pressure cylinder 22 move back vapour, low pressure (LP) cylinder 23 cooling steam is switched to auxiliary steam supply.
Implement this step, can ensure that the supply of low pressure (LP) cylinder 23 cooling steam is stablized, and take away the heat of air blast friction.
S16, gas-steam combined cycle set off-the-line.
In this step, gas-steam combined cycle set and electrical network disconnect, and make gas-steam combined cycle set realize shutdown at sliding parameters.
The gas-steam combined cycle set shutdown at sliding parameters method using as above embodiment to provide, there is following beneficial effect: (1) utilizes described shutdown at sliding parameters method, steam turbine 2 metal temperature is down to 371 DEG C by 530 during orderly closedown DEG C, the stoppage in transit jiggering time shortened to 4 days by 7 days of orderly closedown, improve the benefit of gas-steam combined cycle set significantly; (2) by described shutdown at sliding parameters method, add octadecylamine medicament when control high pressure main steam is below 480 DEG C to maintain the steam line in thermodynamic system, avoid the corrosion of gas-steam combined cycle set thermodynamic system pipeline widely, extend the working life of gas-steam combined cycle set, decrease daily operation maintenance expense; (3) described shutdown at sliding parameters the method is without the need to additionally installing other equipment in implementation process, more without the need to carrying out technological transformation to equipment, utilizes existing equipment completely, can be implemented by operation improving method; (4) described shutdown at sliding parameters method is easy and simple to handle, and can implement the training that site operation personnel is correlated with, cost is low, and implementation result is good; (5) described shutdown at sliding parameters method greatly increases the peaking performance of gas-steam combined cycle set; especially at summer peak meeting, meet between the kurtosis teletostage; effectively support the peak regulation of electrical network, turn improve the ability of unit process unusual service condition simultaneously.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, also can make a lot of form, these all belong within protection of the present invention.
Claims (2)
1. a gas-steam combined cycle set shutdown at sliding parameters method, is characterized in that: comprise the following steps:
S1, auxiliary steam is switched to the supply of gas-steam combined cycle set medium pressure steam;
S2, the load of gas-steam combined cycle set is reduced to 150MW, control the aperture of high pressure Desuperheating water regulating valve (5) and reheating Desuperheating water regulating valve (6), be in 540 DEG C ~ 545 DEG C to make high pressure main steam temperature and reheat steam temperature;
S3, the load of gas-steam combined cycle set is reduced to 140MW, pressure in manual-lock porthole (7) and low pressure admission door (8);
S4, after intermediate pressure cylinder (22) and low pressure (LP) cylinder (23) move back vapour, slow down the load shedding speed of gas-steam combined cycle set, control at 560 DEG C ~ 565 DEG C to make the temperature of exhaust fume of gas turbine (1);
S5, be 8.0MPa by the pressure setting of high pressure turbine by valve (9), manually exit initial steam pressure to control at gas turbine (1) control system interface, keep high pressure main stop valve (11) and middle pressure main stop valve (12) to be in full-gear;
S6, drop into manual temperature matcher in decentralized control system, the coupling temperature of Temperature Matching program is set as 560 DEG C;
S7, after Temperature Matching condition in gas turbine (1) control system meets, drop into the Temperature Matching program in gas turbine (1) control system;
S8, manually reduce Temperature Matching value in gas turbine (1) control system and control the aperture of high pressure Desuperheating water regulating valve (5), lower than steam turbine metal temperature 5 DEG C ~ 10 DEG C to control high pressure main steam temperature, and the speed that high pressure main steam temperature declines is less than 1.0 DEG C/min;
The temperature of exhaust fume of S9, maintenance gas turbine (1) is constant, control the aperture of high pressure Desuperheating water regulating valve (5) and reheating Desuperheating water regulating valve (6), 10 DEG C are reduced to make high pressure main steam temperature, and the Temperature Matching value in gas turbine (1) control system is reduced by 20 DEG C, then the combustion mode of gas turbine (1) is switched to time guide's premix by guide's premix;
S10, close high pressure Desuperheating water regulating valve (5), adjustment gas turbine (1) control system in Temperature Matching value with make high pressure main steam temperature lower than steam turbine (2) metal temperature 5 DEG C ~ 10 DEG C;
S11, when high pressure main steam temperature is down to below 480 DEG C, add octadecylamine medicament at condensate pump entrance;
S12, the Temperature Matching value reduced in gas turbine (1) control system, make high pressure Stream temperature degree be down to 440 DEG C;
S13, steam turbine control inerface in gas turbine (1) control system, be manually set to zero by steam turbine (2) target load;
S14, closedown high pressure main stop valve (11), exit the Temperature Matching program in gas turbine (1) control system, when the import adjustable guide vane (10) of gas turbine (1) closes to the aperture of 49 °, send and shut down order;
S15, after high-pressure cylinder (21) and intermediate pressure cylinder (22) move back vapour, low pressure (LP) cylinder (23) cooling steam is switched to auxiliary steam supply;
S16, gas-steam combined cycle set off-the-line.
2. gas-steam combined cycle set shutdown at sliding parameters method according to claim 1; it is characterized in that: in described step S7; described Temperature Matching condition is that the rotating speed benchmark of gas turbine (1) is greater than 100.4%, and the delivery temperature of gas turbine (1) is less than 570 DEG C.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105804810A (en) * | 2016-03-11 | 2016-07-27 | 大唐淮南洛河发电厂 | Operation control method for thermal power generating unit |
| CN106838865A (en) * | 2017-03-28 | 2017-06-13 | 中国华能集团公司 | The extraction for heat supply electric power station system and method for work of a kind of complete thermoelectricity decoupling |
| CN108612567A (en) * | 2018-04-23 | 2018-10-02 | 哈尔滨汽轮机厂有限责任公司 | The temperature matching method of steam and steam turbine |
| CN109923285A (en) * | 2016-11-07 | 2019-06-21 | 西门子股份公司 | Method for running combined-cycle power plant |
| CN110242416A (en) * | 2019-05-28 | 2019-09-17 | 浙江浙能技术研究院有限公司 | A method of extending generator life by optimizing the uniaxial combined cycle unit jiggering time |
| CN110819996A (en) * | 2019-11-15 | 2020-02-21 | 广州珠江天然气发电有限公司 | High-temperature film forming maintenance method for gas-steam combined cycle unit |
| CN111336013A (en) * | 2020-03-16 | 2020-06-26 | 中国大唐集团科学技术研究院有限公司华东电力试验研究院 | Method and device for evaluating efficiency change of gas turbine combined cycle unit before and after maintenance |
| CN111764973A (en) * | 2020-05-18 | 2020-10-13 | 张选 | Deep slip stopping method for steam turbine |
| CN113606004A (en) * | 2021-08-27 | 2021-11-05 | 华能太原东山燃机热电有限责任公司 | Steam combining method for two-driving-one gas-steam combined cycle unit |
| CN115163221A (en) * | 2022-08-02 | 2022-10-11 | 马鞍山钢铁股份有限公司 | Rapid cooling process for gas-steam combined cycle generator set |
| CN115468157A (en) * | 2015-12-28 | 2022-12-13 | 安萨尔多能源公司 | Method and apparatus for controlling heat exchange in heat recovery steam generator |
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