CN103216402A - Active adjusting and controlling system and method for water feeding-heating light-coal complementary power station under varied work condition - Google Patents
Active adjusting and controlling system and method for water feeding-heating light-coal complementary power station under varied work condition Download PDFInfo
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Abstract
The invention discloses an active adjusting and controlling system and method for a water feeding-heating light-coal complementary power station under a varied work condition. The system comprises a lens field, a first temperature sensor, a first controller, an oil pump, an oil tank, a first shunt, a solar adjusting and controlling device, a reducing valve, a second temperature sensor, a second controller, a water pump, a water tank, a steam-water heat exchanger, an original steam-pumping water-feeding heater, a second shunt and an oil-water heat exchanger. When irradiation intensity is equal to a design value, heat transfer oil heats the fed water in a heat returning system to the temperature needed by a boiler outlet; when the irradiation intensity is larger than the design value, the heat transfer oil is shunted in the solar adjusting and controlling device for radiating, and high-pressure water in the solar adjusting and controlling device is heated to high temperature; when the irradiation intensity is smaller than the design value, the high-pressure water in the solar adjusting and the controlling device becomes overheated steam by the reducing valve, releases potential heat to heat a part of the fed water at the steam-water heat exchanger, and flows back to a water returning box after condensation. The active adjusting and controlling system and method solve the problem of low annual average solar power generation efficiency of the light-coal complementary power station under the varied work condition.
Description
Technical field
The present invention relates to solar energy and fossil energy complemental power-generation technical field, relate in particular to the variable working condition active regulator control system in the complementary power station of a kind of hot type light that feeds water-coal.
Background technique
The complementary pattern of utilizing of solar energy and fossil energy can effectively be improved the environmental pollution problem of coal-burning power plant, and by ripe conventional power generation usage technology, technology and the economic risk followed when reducing development and use solar energy.For example application number is that 200810104285.8 application for a patent for invention has proposed to utilize the hydrophobic of feed water preheater in the solar energy heating heat regenerative system, return to the water heater heat release after becoming steam, application number is that 200810104848.3 application for a patent for invention has proposed to utilize the direct heating boiler feedwater of solar energy, application number is that 200810104849.8 application for a patent for invention has proposed the feedwater of splitter section heat regenerative system and enters solar thermal collector and generate steam, inject the boiler feed water of feed water preheater heating residue, can save steam with upper type draws gas, effectively the increase system goes out merit, and need not accumulation of energy, only need to reduce situation and reduce the feedwater flow that enters in the solar thermal collector in good time, enable original extracted steam from turbine all the other heats are provided according to solar irradiance.
Above scheme is primarily aimed at complementary power station design conditions and carries out, but when solar irradiance off-design value, complementary system is in the state of variable parameter operation, system's off-design value, and confluent and the steam turbine quantitative changeizations of drawing gas at different levels are frequent in the feed water preheater, be unfavorable for the stable operation of steam turbine and heat regenerative system, the regulator control system of the complementary power station variable parameter operation that present this solar energy combines with fossil fuel and method also do not appear in the newspapers as yet to.In addition,, can't effectively utilize the heat of collecting more, can only make part Jing Chang idle, waste the Jing Chang that involves great expense and good irradiation resource, can't further effectively reduce the cost of electricity-generating of solar energy when solar irradiance during greater than design load.
Therefore, regulator control system how, realize efficient stable operation under the variable working condition, guarantee that promptly stable the and clean generated output of solar energy of the generated output of complementary system under the variable working condition is near design load, realize fully effectively utilizing of solar energy resources simultaneously, become the important technological problems of the urgent need solution of solar energy and thermal power station's complementary technology.
Summary of the invention
(1) technical problem that will solve
In view of this, main purpose of the present invention is to provide the variable working condition active regulator control system and the method in the complementary power station of a kind of hot type light that feeds water-coal, system's no longer passive dependence extracted steam from turbine heating boiler feedwater under low irradiation, but utilize high irradiation solar heat to compensate low irradiation solar heat, continue to replace steam turbine to draw gas, make complementary electrical stand in solar energy and become under the irradiation generating efficiency, thereby solve current solar heat power generation system variable working condition thermal performance difference and the average annual low technical bottleneck of generating efficiency near design conditions and stable.
(2) technological scheme
For achieving the above object, the invention provides the variable working condition active regulator control system in the complementary power station of a kind of hot type light that feeds water-coal, it is characterized in that, this system comprises mirror field 1, first temperature transducer 2, first controller 3, oil pump 4, oil tank 5, first shunt 6, solar energy modulator 7, reduction valve 8, second temperature transducer 9, second controller 10, water pump 11, water tank 12, vapor-water heat exchanger 13, former bled steam feed heater 14, second shunt 15 and oil water heat exchange device 16, wherein:
Oil pump 4 is sent the pressurization of the conduction oil in the oil tank 5 into mirror field 1, the first controller 3 and is controlled the conduction oil flow that enters mirror field 1 according to the conduction oil outlet temperature that first temperature transducer 2 shows, guarantees that mirror field 1 outlet temperature is constant;
When solar irradiance intensity equaled design load, conduction oil all entered oil-water-to-water heat exchanger 16 after absorbing solar temperature rising, and feedwater is heated to boiler inlet requirement water temperature;
When solar irradiance intensity is higher than design load, mirror field 1 heat conduction flow increases, the conduction oil that increases enters 7 heat releases of solar energy modulator, and water pump 11 is sent the pressurization of water tank 12 water into heat absorption in the solar energy modulator 7, and all the other conduction oils still enter oil-water-to-water heat exchanger 16 heated feed waters;
When solar irradiance intensity is lower than design load, mirror field 1 conduction oil flow reduces, and all enter 16 heat releases of oil-water-to-water heat exchanger, simultaneously, 8 step-downs become superheated vapor to solar energy modulator mesohigh water through reduction valve, enter steam water heat exchanger 13, add boiler feed water in the cogeneration power plant heat regenerative system jointly with oil-water-to-water heat exchanger 16, reflow tank 12 after the superheated vapor condensation.
In the such scheme, described solar energy modulator 7 is used for remedying to the operating mode that is lower than design irradiation being higher than the solar heat that designs irradiation, realize that also can at utmost substitute original steam turbine steam under the low radiation parameter draws gas, this is a kind of active control methods, rather than go the control system operation by the passive change steam turbine amount of drawing gas again, the active regulation and control of this variable working condition can guarantee that the clean generating efficiency of system's solar energy is near design conditions.
In the such scheme, second temperature transducer 9 is equipped with in described solar energy modulator 7 outlets, during solar irradiance off-design value, second controller 10 changes water pump 11 outlet valve aperture sizes according to the high pressure water outlet temperature that second temperature transducer 9 shows, water flow on the regulation and control water tank 12 guarantees that solar energy modulator 7 outlet temperatures are constant.When solar irradiance intensity was higher than design load, the last water yield from water tank 12 to solar energy modulator 7 increased, and liquid level rises.When solar irradiance intensity was lower than design load, water tank 12 stopped to go up water, and solar energy modulator 7 mesohigh water constantly consume, and liquid level descends.
In the such scheme, described steam water heat exchanger 13 is in parallel with oil-water-to-water heat exchanger 16, with all the other the feed water preheater 14 serial or parallel connections operations in the heat regenerative system of power station.
In the such scheme, described steam water heat exchanger 13 adopts original steam heated feed water that draws gas, and when post sunset or this regulator control system break down before sunrise, in time opens steam and draws gas, and guarantees the proper functioning of heat regenerative system, improves safety reliability.
For achieving the above object, the invention provides the variable working condition active regulate and control method in the complementary power station of a kind of hot type light that feeds water-coal, this method comprises:
When irradiation intensity equaled design load, conduction oil absorbed heat in parabolic slot type solar energy mirror field, and heat release in oil-water-to-water heat exchanger is heated to boiler inlet with the feedwater in the heat regenerative system and requires temperature;
When irradiation intensity was higher than design load, the conduction oil flow increased in the solar energy mirror field, and the conduction oil of increase branches to heat release in the solar energy modulator, and the heat absorption of solar energy modulator mesohigh water heats up;
When irradiation intensity was lower than design load, solar energy modulator mesohigh water became superheated vapor through reduction valve, substituted original steam turbine steam and drew gas, and discharged the feedwater of latent heat heating part, reflow tank after the condensation at steam water heat exchanger.
In the such scheme, second temperature transducer (9) is equipped with in described solar energy modulator (7) outlet, during solar irradiance off-design value, the high pressure water outlet temperature that second controller (10) shows according to second temperature transducer (9) changes water pump (11) outlet valve aperture size, regulation and control water tanks (12) are gone up water flow, guarantee that solar energy modulator (7) outlet temperature is constant.
In the such scheme, when solar irradiance intensity was higher than design load, the last water yield from water tank (12) to solar energy modulator (7) increased, and liquid level rises.
In the such scheme, when solar irradiance intensity was lower than design load, water tank (12) stopped to go up water, and solar energy modulator (7) mesohigh water constantly consumes, and liquid level descends.
In the such scheme, described steam water heat exchanger (13) is in parallel with oil-water-to-water heat exchanger (16), with all the other feed water preheaters (14) serial or parallel connection operation in the heat regenerative system of power station.
In the such scheme, described steam water heat exchanger (13) adopts original steam heated feed water that draws gas, and when post sunset or this regulator control system break down before sunrise, in time opens steam and draws gas, and guarantees the proper functioning of heat regenerative system, improves safety reliability.
(3) beneficial effect
From technique scheme as can be seen, the present invention has following beneficial effect:
1, utilize the present invention, when solar irradiance intensity is lower than design load, does not need to reactivate former coal fired power plant steam turbine steam and draw gas, complementary system generating efficiency and output power are still near design load.
2, utilize the present invention, realized the maximum using of solar energy resources, the average daily generating efficiency of solar energy is near the maximum value of design conditions.
3, utilize the present invention, during the solar energy variable working condition, do not need frequent variations steam turbine steam to draw gas, guaranteed the stable operation of steam turbine.
4, utilize the present invention, when having avoided solar irradiance greater than design load, the part mirror is idle, helps making full use of of solar energy mirror field.
Description of drawings
Fig. 1 is the schematic representation of the variable working condition active regulator control system in the complementary power station of feedwater hot type light-coal according to the embodiment of the invention;
Wherein reference character is: 1-Jing Chang; 2-first temperature transducer; 3-first controller; The 4-oil pump; The 5-oil tank; 6-first shunt; 7-solar energy modulator; The 8-reduction valve; 9-second temperature transducer; 10-second controller; The 11-water pump; The 12-water tank; The 13-steam water heat exchanger; The former bled steam feed heater of 14-; 15-second shunt; 16-oil-water-to-water heat exchanger.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
The variable working condition in the complementary power station of feedwater hot type light provided by the invention-coal is regulator control system and method initiatively, under the design radiation parameter, be that irradiation intensity is when equaling design load, conduction oil absorbs heat in parabolic slot type solar energy mirror field, heat release in oil-water-to-water heat exchanger is heated to boiler inlet with the feedwater in the heat regenerative system and requires temperature; When irradiation intensity was higher than design load, the conduction oil flow increased in the solar energy mirror field, and the conduction oil of increase branches to heat release in the solar energy modulator, and the heat absorption of solar energy modulator mesohigh water heats up; When irradiation intensity was lower than design load, solar energy modulator mesohigh water became superheated vapor through reduction valve, substituted original steam turbine steam and drew gas, and discharged the feedwater of latent heat heating part, reflow tank after the condensation at steam water heat exchanger.
As shown in Figure 1, Fig. 1 is the schematic representation of the variable working condition active regulator control system in the complementary power station of feedwater hot type light-coal according to the embodiment of the invention, and this system comprises: mirror field 1, first temperature transducer 2, first controller 3, oil pump 4, oil tank 5, first shunt 6, solar energy modulator 7, reduction valve 8, second temperature transducer 9, second controller 10, water pump 11, water tank 12, steam water heat exchanger 13, former bled steam feed heater 14, second shunt 15 and oil-water-to-water heat exchanger 16.
Wherein, described solar energy modulator 7 is used for remedying to the operating mode that is lower than design irradiation being higher than the solar heat that designs irradiation, realize that also can at utmost substitute original steam turbine steam under the low radiation parameter draws gas, this is a kind of active control methods, rather than go the control system operation by the passive change steam turbine amount of drawing gas again, the active regulation and control of this variable working condition can guarantee that the clean generating efficiency of system's solar energy is near design conditions.
Ground such as China's western region such as Ningxia solar energy resources is abundant, selects for use the conventional coal-fired thermal power station of local 200MW to carry out complementation and transforms.In the present embodiment, choose annual mean irradiation intensity 610W/m
2As the irradiation design load, what Jing Chang adopted is the parabolic trough type solar heat-collector, replaces this thermal power station's first order steam and draws gas and need provide heat 21.3MW by solar energy, needs the long-pending about 58200m of mirror scene
2
Oil pump 4 is sent 250 ℃ conduction oil pressurization in the oil tank 5 into the conduction oil flow that conduction oil outlet temperature control that mirror field 1, the first controller 3 shows according to first temperature transducer 2 enters mirror field 1, guarantee outlet temperature constant be 300 ℃.
When irradiation intensity equals design load 610W/m
2The time, high temperature heat conductive oil all enters heat release in oil-water-to-water heat exchanger 16, and heat regenerative system feedwater is heated to 245 ℃ from 218 ℃, then is cooled to 250 ℃ and gets back to oil tank 5.
When irradiation intensity greater than design load 610W/m
2The time, the solar thermal energy of mirror field 1 increases, and for guaranteeing that mirror field 1 outlet temperature perseverance is 300 ℃, first controller, 3 control oil pumps, 4 valve openings strengthen, and the conduction oil flow increases.The high temperature heat conductive oil that increases enters 7 heat releases of solar energy modulator, water pump 11 is forced into 65bar with the water in the water tank 12, send into 7 heat absorptions of solar energy modulator and be warming up to 280 ℃, the water yield that the high pressure water outlet temperature control that second controller 10 shows according to second temperature transducer 9 enters the solar energy modulator, assurance high pressure water outlet temperature is constant to be 280 ℃.Along with irradiation intensity increases, the liquid level of solar energy modulator 7 rises.All the other high temperature heat conductive oils still enter heat release in oil-water-to-water heat exchanger 16, and heat regenerative system feedwater is heated to 245 ℃ from 218 ℃, then are cooled to 250 ℃ and get back to oil tank 5.
When irradiation intensity less than design load 610W/m
2The time, the solar thermal energy of mirror field 1 reduces, and for guaranteeing that mirror field 1 outlet temperature perseverance is 300 ℃, first controller, 3 control oil pumps, 4 valve openings reduce, and the conduction oil flow reduces.High temperature heat conductive oil all enters heat release in oil-water-to-water heat exchanger 16, then is cooled to 250 ℃ and gets back to oil tank 5.Simultaneously, open reduction valve 8, ℃ high-temperature water of the 65bar/280 in the solar energy modulator 7 becomes 60bar/280 ℃ of superheated vapor, injects steam water heat exchanger 13 and discharges latent heat, with oil-water-to-water heat exchanger 16 the heat regenerative system feedwater is heated to 245 ℃ from 218 ℃.The condensation flow that becomes 230 ℃ after the superheated vapor heat release is gone into water tank 12.Along with irradiation intensity descends, the liquid level of solar energy modulator 7 descends.
Post sunset before sunrise, or this regulator control system is when breaking down, steam water heat exchanger 13 still can adopt the original steam heated feed water that draws gas.
All the other feed water preheater 14 serial or parallel connections operations in steam water heat exchanger 13 and oil-water-to-water heat exchanger 16 and the power station heat regenerative system.
Variable working condition active regulator control system based on the complementary power station of feedwater hot type light shown in Figure 1-coal, the present invention also provides the variable working condition active regulate and control method in the complementary power station of a kind of hot type light that feeds water-coal, this method may further comprise the steps: under the design radiation parameter, be that irradiation intensity is when equaling design load, conduction oil absorbs heat in parabolic slot type solar energy mirror field, heat release in oil-water-to-water heat exchanger is heated to boiler inlet with the feedwater in the heat regenerative system and requires temperature; When irradiation intensity was higher than design load, the conduction oil flow increased in the solar energy mirror field, and the conduction oil of increase branches to heat release in the solar energy modulator, and the heat absorption of solar energy modulator mesohigh water heats up; When irradiation intensity was lower than design load, solar energy modulator mesohigh water became superheated vapor through reduction valve, substituted original steam turbine steam and drew gas, and discharged the feedwater of latent heat heating part, reflow tank after the condensation at steam water heat exchanger.
Wherein, second temperature transducer 9 is equipped with in described solar energy modulator 7 outlets, during solar irradiance off-design value, second controller 10 changes water pump 11 outlet valve aperture sizes according to the high pressure water outlet temperature that second temperature transducer 9 shows, water flow on the regulation and control water tank 12 guarantees that solar energy modulator 7 outlet temperatures are constant.When solar irradiance intensity was higher than design load, the last water yield from water tank 12 to solar energy modulator 7 increased, and liquid level rises.When solar irradiance intensity was lower than design load, water tank 12 stopped to go up water, and solar energy modulator 7 mesohigh water constantly consume, and liquid level descends.Described steam water heat exchanger 13 is in parallel with oil-water-to-water heat exchanger 16, with all the other the feed water preheater 14 serial or parallel connections operations in the heat regenerative system of power station.Described steam water heat exchanger 13 adopts original steam heated feed water that draws gas, and when post sunset or this regulator control system break down before sunrise, in time opens steam and draws gas, and guarantees the proper functioning of heat regenerative system, improves safety reliability.
For the complementary power station that does not have regulator control system, annual solar irradiance subaverage 610W/m
2, heat-collecting capacity is less than in the first order feed water preheater during water supply point calorific requirement 21.3MW, need enable the original steam of this grade common heated feed water that draws gas, and reduced system and gone out merit, reduced the clean generating efficiency of solar energy, and the amount of drawing gas needs to change and real-time change according to irradiation.And irradiation is greater than mean value 610W/m
2, it is burnt that heat-collecting capacity needs during greater than 21.3MW adjustment member Jing Chang that it is lost again, avoids the boiler inlet feedwater overheated.The clean generating efficiency of solar energy annual mean is 20.5%.
And adopt active regulate and control method of the present invention, can be with irradiation greater than 610W/m
2The solar thermal energy that the Jing Chang of period collects more is used to remedy and is lower than 610W/m
2Period in energy shortage, realize that from sun to sun replacing the first order as far as possible fully in the time period draws gas.Like this, complementary system can still maintain under the design conditions when solar irradiance intensity is lower than design load and move, and guarantees that maximum goes out merit and the clean generating efficiency of solar energy.By this regulation and control, can make the clean generating efficiency of solar energy annual mean reach 28.0%.Simultaneously, complementary power station has realized continuous operation and has stablized merit.The post sunset system recovery is to original system before the sunrise, switches to this grade original steam fully and draws gas and carry out heat supply.
Above-described specific embodiment; purpose of the present invention, technological scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. the variable working condition in the complementary power station of the hot type light that feeds water-coal regulator control system initiatively, it is characterized in that, this system comprises Jing Chang (1), first temperature transducer (2), first controller (3), oil pump (4), oil tank (5), first shunt (6), solar energy modulator (7), reduction valve (8), second temperature transducer (9), second controller (10), water pump (11), water tank (12), vapor-water heat exchanger (13), former bled steam feed heater (14), second shunt (15) and oil water heat exchange device (16), wherein:
Oil pump (4) is sent the pressurization of the conduction oil in the oil tank (5) into Jing Chang (1), and the conduction oil outlet temperature control that first controller (3) shows according to first temperature transducer (2) enters the conduction oil flow of Jing Chang (1), guarantees that Jing Chang (1) outlet temperature is constant;
When solar irradiance intensity equaled design load, conduction oil all entered oil-water-to-water heat exchanger (16) after absorbing solar temperature rising, and feedwater is heated to boiler inlet requirement water temperature;
When solar irradiance intensity is higher than design load, Jing Chang (1) heat conduction flow increases, the conduction oil that increases enters solar energy modulator (7) heat release, and water pump (11) is sent the pressurization of water tank (12) water into heat absorption in the solar energy modulator (7), and all the other conduction oils still enter oil-water-to-water heat exchanger (16) heated feed water;
When solar irradiance intensity is lower than design load, Jing Chang (1) conduction oil flow reduces, and all enter oil-water-to-water heat exchanger (16) heat release, simultaneously, step-down becomes superheated vapor to solar energy modulator mesohigh water through reduction valve (8), enter steam water heat exchanger (13), add boiler feed water in the cogeneration power plant heat regenerative system, reflow tank after the superheated vapor condensation (12) jointly with oil-water-to-water heat exchanger (16).
2. the variable working condition in the complementary power station of feedwater hot type light according to claim 1-coal is regulator control system initiatively, it is characterized in that, described solar energy modulator (7) is used for remedying to the operating mode that is lower than design irradiation being higher than the solar heat that designs irradiation, realize that also can at utmost substitute original steam turbine steam under the low radiation parameter draws gas, this is a kind of active control methods, rather than go the control system operation by the passive change steam turbine amount of drawing gas again, the active regulation and control of this variable working condition can guarantee that the clean generating efficiency of system's solar energy is near design conditions.
3. the variable working condition in the complementary power station of feedwater hot type light according to claim 1-coal is regulator control system initiatively, it is characterized in that, second temperature transducer (9) is equipped with in described solar energy modulator (7) outlet, during solar irradiance off-design value, the high pressure water outlet temperature that second controller (10) shows according to second temperature transducer (9) changes water pump (11) outlet valve aperture size, regulation and control water tanks (12) are gone up water flow, guarantee that solar energy modulator (7) outlet temperature is constant.
4. the variable working condition in the complementary power station of feedwater hot type light according to claim 3-coal is regulator control system initiatively, it is characterized in that, when solar irradiance intensity was higher than design load, the last water yield from water tank (12) to solar energy modulator (7) increased, and liquid level rises.
5. the variable working condition in the complementary power station of feedwater hot type light according to claim 3-coal is regulator control system initiatively, it is characterized in that when solar irradiance intensity was lower than design load, water tank (12) stopped to go up water, solar energy modulator (7) mesohigh water constantly consumes, and liquid level descends.
6. the variable working condition in the complementary power station of feedwater hot type light according to claim 1-coal is regulator control system initiatively, it is characterized in that, described steam water heat exchanger (13) is in parallel with oil-water-to-water heat exchanger (16), with all the other feed water preheaters (14) serial or parallel connection operation in the heat regenerative system of power station.
7. the variable working condition in the complementary power station of feedwater hot type light according to claim 1-coal is regulator control system initiatively, it is characterized in that, described steam water heat exchanger (13) adopts original steam heated feed water that draws gas, when post sunset or this regulator control system break down before sunrise, in time opening steam draws gas, guarantee the proper functioning of heat regenerative system, improve safety reliability.
8. the variable working condition active regulate and control method in the complementary power station of the hot type light that feeds water-coal is applied to each described system in the claim 1 to 7, and this method comprises:
When irradiation intensity equaled design load, conduction oil absorbed heat in parabolic slot type solar energy mirror field, and heat release in oil-water-to-water heat exchanger is heated to boiler inlet with the feedwater in the heat regenerative system and requires temperature;
When irradiation intensity was higher than design load, the conduction oil flow increased in the solar energy mirror field, and the conduction oil of increase branches to heat release in the solar energy modulator, and the heat absorption of solar energy modulator mesohigh water heats up;
When irradiation intensity was lower than design load, solar energy modulator mesohigh water became superheated vapor through reduction valve, substituted original steam turbine steam and drew gas, and discharged the feedwater of latent heat heating part, reflow tank after the condensation at steam water heat exchanger.
9. the variable working condition in the complementary power station of feedwater hot type light according to claim 8-coal is regulate and control method initiatively, it is characterized in that, second temperature transducer (9) is equipped with in described solar energy modulator (7) outlet, during solar irradiance off-design value, the high pressure water outlet temperature that second controller (10) shows according to second temperature transducer (9) changes water pump (11) outlet valve aperture size, regulation and control water tanks (12) are gone up water flow, guarantee that solar energy modulator (7) outlet temperature is constant.
10. the variable working condition in the complementary power station of feedwater hot type light according to claim 8-coal is regulate and control method initiatively, it is characterized in that, when solar irradiance intensity was higher than design load, the last water yield from water tank (12) to solar energy modulator (7) increased, and liquid level rises.
11. the variable working condition in the complementary power station of feedwater hot type light according to claim 8-coal is regulate and control method initiatively, it is characterized in that when solar irradiance intensity was lower than design load, water tank (12) stopped to go up water, solar energy modulator (7) mesohigh water constantly consumes, and liquid level descends.
12. the variable working condition in the complementary power station of feedwater hot type light according to claim 8-coal is regulate and control method initiatively, it is characterized in that, described steam water heat exchanger (13) is in parallel with oil-water-to-water heat exchanger (16), with all the other feed water preheaters (14) serial or parallel connection operation in the heat regenerative system of power station.
13. the variable working condition in the complementary power station of feedwater hot type light according to claim 8-coal is regulate and control method initiatively, it is characterized in that, described steam water heat exchanger (13) adopts original steam heated feed water that draws gas, when post sunset or this regulator control system break down before sunrise, in time opening steam draws gas, guarantee the proper functioning of heat regenerative system, improve safety reliability.
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| CN103455004A (en) * | 2013-09-05 | 2013-12-18 | 华北电力大学 | Solar-coal contribution degree evaluation method and electric power distribution system of solar-coal complementary power station |
| CN111241711A (en) * | 2020-02-19 | 2020-06-05 | 西安交通大学 | Photoelectric conversion efficiency optimization control method for light-coal complementary system variable working condition |
| WO2021164497A1 (en) * | 2020-02-19 | 2021-08-26 | 西安交通大学 | Generated power optimization control method for solar-coal complementary system under variable working conditions |
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