CN115854328A - Photo-thermal power station coordinated operation control method and system - Google Patents
Photo-thermal power station coordinated operation control method and system Download PDFInfo
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Abstract
The invention discloses a photo-thermal power station coordinated operation control method and a photo-thermal power station coordinated operation control system, wherein the photo-thermal power station coordinated operation control method comprises the following steps: acquiring a main control demand signal of the steam generator; utilize steam generator demand master control signal and the relevant measurement information of light and heat power station are right cold salt flow, hot salt flow and flow distribution in the light and heat power station regulate and control to realize light and heat power station coordinated operation control. The invention can solve the problems of large steam pressure and steam temperature fluctuation and unbalanced molten salt flow ration of the existing photo-thermal power station.
Description
Technical Field
The invention relates to the technical field of photo-thermal power generation, in particular to a photo-thermal power station coordinated operation control method and a photo-thermal power station coordinated operation control system.
Background
The photo-thermal power generation is a renewable energy power generation mode integrating the characteristics of light-heat conversion power generation, large-scale heat energy storage and a synchronous machine, and is one of the most promising power generation technologies in future renewable energy systems. The photothermal power generation has long-time heat storage capacity, adopts the traditional steam turbine-synchronous machine power generation technology, can meet the technical requirements of inertia support, fault ride through, voltage/frequency response and the like of the existing alternating current synchronous system, can provide reliable guarantee and support for a green low-carbon power system, and can play a middle-strong role in constructing a novel power system taking new energy as a main body. However, since the photo-thermal basic research in China is still in the beginning stage, the existing basic theory and actual operation and maintenance experience still need to be perfect, especially the operation control scheme of the photo-thermal power station is not enough, the excellent dynamic response and supporting capability of the photo-thermal power station cannot be fully exerted, and the actual performance of the photo-thermal power station is greatly reduced and the practical commercial popularization of the photo-thermal power generation technology is hindered.
In order to solve the problems, the prior art focuses on the performance improvement of the front-end heat collection control system of the photo-thermal power station, and the control modes of the steam-water system and the heat storage system mainly use the control technology of the traditional thermal power unit. However, in actual operation, the photo-thermal power station using the traditional thermal power control system has the problems of low climbing rate, large steam pressure and steam temperature fluctuation, unbalanced molten salt flow distribution and the like. Therefore, a coordinated operation control method which is matched with the characteristics of the photo-thermal power station and can fully exert the inherent advantages of the photo-thermal power station is needed.
Disclosure of Invention
The invention aims to provide a photo-thermal power station coordinated operation control method and a photo-thermal power station coordinated operation control system, which are used for solving the problems of large steam pressure and steam temperature fluctuation and unbalanced molten salt flow ration of the existing photo-thermal power station.
The technical scheme for solving the technical problems is as follows:
the invention provides a photo-thermal power station coordinated operation control method, which comprises the following steps:
acquiring a main control demand signal of the steam generator;
and regulating and controlling cold salt flow, hot salt flow and flow distribution in the photo-thermal power station by utilizing the steam generator demand master control signal and the photo-thermal power station related measurement information so as to realize photo-thermal power station coordinated operation control.
Optionally, the steam generator main control demand signal is obtained by:
acquiring an external load demand instruction;
obtaining a unit load demand signal and a frequency correction signal according to the external load demand instruction;
obtaining a pressure set value of a steam generator according to the unit load demand signal;
obtaining a steam turbine error signal according to the unit load demand signal and the frequency correction signal;
generating an initial main control demand signal of the steam generator according to the pressure set value of the steam generator and the steam turbine error signal;
and regulating and controlling the initial main control demand signal of the steam generator by utilizing the feedforward signal to obtain the main control demand signal of the steam generator.
Optionally, the photothermal power station related measurement information comprises:
the measured hot salt temperature and the measured hot salt mass flow rate.
Optionally, the controlling the hot salt flow in the solar thermal power station using the steam generator demand master control signal and the solar thermal power station related measurement information comprises:
obtaining a heat value correction signal according to the actually measured hot salt temperature and the rated temperature;
correcting the measured thermohaline mass flow by using the heat value correction signal to obtain a corrected mass flow signal;
processing the steam generator demand master control signal by using a signal processing function to obtain a processing result;
comparing the corrected mass flow signal with the processing result to obtain a mass flow error signal;
generating a mass flow control signal by using a first PI controller according to the mass flow error signal;
and regulating and controlling the heat salt flow according to the mass flow control signal.
Optionally, the photothermal power station related measurement information further comprises: superheated steam temperature and reheated steam temperature.
Optionally, the controlling the cold salt flow in the solar thermal power station using the steam generator demand master control signal and the solar thermal power station related measurement information comprises:
regulating and controlling the actually measured hot salt temperature by using a bias signal to obtain a regulated and controlled hot salt temperature;
judging whether the regulated hot salt temperature is within a preset temperature range, if so, forming a first temperature error and a second temperature error with the superheated steam temperature and the superheated steam temperature respectively by utilizing the regulated hot salt temperature, generating a cold salt pump control signal by utilizing the first temperature error and the second temperature error by utilizing a second PI controller, and regulating and controlling the cold salt flow according to the cold salt pump control signal;
otherwise, respectively forming a first temperature error and a second temperature error by the endpoint temperature value of the preset temperature range and the temperature of the superheated steam, generating a cold salt pump control signal by the first temperature error and the second temperature error by using a second PI controller, and regulating and controlling the flow of cold salt according to the cold salt pump control signal.
Optionally, the controlling the cold salt flow in the solar-thermal power station by using the steam generator demand master control signal and the solar-thermal power station related measurement information further comprises:
regulating and controlling the actually measured hot salt temperature by using a bias signal to obtain a regulated and controlled hot salt temperature;
judging whether the regulated hot salt temperature is within a preset temperature range, if so, forming a first temperature error and a second temperature error with the superheated steam temperature and the superheated steam temperature respectively by utilizing the regulated hot salt temperature, generating a cold salt pump control signal by utilizing the first temperature error and the second temperature error by utilizing a second PI controller, and regulating and controlling the cold salt flow according to the cold salt pump control signal;
otherwise, processing the regulated and controlled hot salt temperature by using a disturbance coefficient to obtain a processed hot salt temperature signal, forming a first temperature error and a second temperature error by respectively using the endpoint temperature value of the preset temperature range and the superheated steam temperature, generating an initial cold salt pump control signal by using a second PI controller according to the first temperature error and the second temperature error, and regulating and controlling the cold salt flow according to the initial cold salt pump control signal and the processed hot salt temperature signal.
Optionally, the regulating flow distribution in the photovoltaic power plant using the steam generator demand master control signal and the photovoltaic power plant related measurement information comprises:
and regulating and controlling the flow distribution in the photo-thermal power station by using the superheated steam temperature and the reheated steam temperature.
Optionally, the regulating the flow distribution in the solar thermal power plant using the superheated steam temperature and the reheated steam temperature comprises:
obtaining a temperature difference signal according to the temperature of the superheated steam and the temperature of the reheated steam;
generating a superheater valve control signal and a reheater valve control signal from the temperature difference signal by using a third PI controller, wherein the superheater valve control signal and the reheater valve control signal are two signals with opposite trends;
and realizing flow distribution regulation and control in the photo-thermal power station by utilizing the superheater valve control signal and the reheater valve control signal.
The invention also provides a photo-thermal power station coordinated operation system based on the photo-thermal power station coordinated operation method, and the photo-thermal power station coordinated operation system at least comprises the following components:
the main control demand signal acquisition device is used for acquiring a main control demand signal of the steam generator;
and the coordination control device is used for utilizing the steam generator demand master control signal and the related measurement information of the photo-thermal power station to regulate and control the cold salt flow, the hot salt flow and the flow distribution in the photo-thermal power station so as to realize the photo-thermal power station coordination operation control.
The invention has the following beneficial effects:
the method can fully explore the quick load response characteristic of the photo-thermal power station while maintaining the stable main steam pressure, can better overcome the influence caused by internal and external disturbance such as molten salt temperature, load demand and the like, and realizes the efficient regulation and control of the molten salt flow and the steam temperature.
Drawings
FIG. 1 is a flow chart of a coordinated operation control method of a photothermal power station of the present invention;
FIG. 2 is a schematic diagram of a manner of acquiring a steam generator master control demand signal according to the present invention;
FIG. 3 is a schematic view of a thermal salt flow control structure according to the present invention;
FIG. 4 is a schematic view of the cold salt flow control structure of the present invention;
FIG. 5 is a schematic view of a flow distribution control architecture of the present invention;
FIG. 6 is a graph of electrical power and main steam pressure for the present invention;
FIG. 7 is a graph of power versus steam pressure relative error;
FIG. 8 is a graph of superheat versus reheat steam temperature variation.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Example 1
The invention provides a photo-thermal power station coordinated operation control method, which is shown in a reference figure 1 and comprises the following steps:
s1: acquiring a main control demand signal of the steam generator;
optionally, the steam generator main control demand signal is obtained by:
acquiring an external load demand instruction; referring to fig. 2, the external load demand signal of the present invention includes an AGC load signal, a manual signal, and the like.
Obtaining a unit load demand signal and a frequency correction signal according to the external load demand instruction;
referring to fig. 2 specifically, after being processed by the selector, the AGC load signal and the manual signal sequentially pass through the vacuum, the dynamic amplitude device and the dynamic rate limiter, so as to obtain a unit load demand signal (1) subjected to rate limitation, and the system frequency offset signal Δ f is corrected to obtain a frequency correction signal (2) fcs.
Obtaining a pressure set value of the steam generator according to the unit load demand signal;
still referring to fig. 2, in one aspect, the uld of the unit load demand signal (1) of the present invention is added to the offset signal after passing through the look-up table, and the obtained result is simultaneously input to the selector together with the output signal of the pressure setting module, processed by the selector and then processed by the dynamic rate limiter to obtain the first initial pressure signal p 0 First initial pressure signal p 0 With measured main steam pressure p m The difference is the steam generator pressure set point Δ p.
Obtaining a steam turbine error signal according to the unit load demand signal and the frequency correction signal;
on the other hand, the unit load demand signal (1) is processed by time delay to obtain a second initial pressure signal P 0 At the same time, the frequency correction signal (2) FCS is used to correct the result of the correction by the factor K with the second initial pressure signal P 0 And actually measuring the electric power Pe to generate the error of the steam turbineThe signal ap.
Generating an initial main control demand signal of the steam generator according to the pressure set value of the steam generator and the steam turbine error signal;
and adding the pressure set value delta P of the steam generator and the error signal delta P of the steam turbine, and processing the sum by the PID controller to obtain an initial main control demand signal of the steam generator.
To further consider response speed and immunity, the present invention considers feed forward signals, including the unit load demand signal (1), ULD, frequency correction signal (2 FCS and temperature signal, etc.). It is worth mentioning that the inlet side molten salt temperature as a feed forward signal can effectively reduce the influence of thermal salt temperature disturbance on the main steam pressure change.
And regulating and controlling the initial main control demand signal of the steam generator by utilizing the feedforward signal to obtain the main control demand signal of the steam generator.
Specifically, referring to fig. 2, the unit load demand signal (1), uld (same as the later SGS demand main control signal), the frequency correction signal (2), fcs, feed water temperature, and hot salt temperature in the hot tank are processed differently, and the processing results are summed up, and the sum result is added to the steam generator initial main control demand signal, so as to obtain the steam generator main control demand signal. Note that the pre-processing function parameters of the feed-forward input signal are implementation dependent, and F (x) is typically a linear function.
In the invention, the upper limit and the lower limit of the dynamic amplitude limiter are respectively determined by the running condition of the auxiliary equipment and the minimum running output of the hot salt pump. And the rate limiting signal of the rate limiter is determined according to the thermal stress evaluation result.
S2: utilize steam generator demand master control signal and the relevant measurement information of light and heat power station are right cold salt flow, hot salt flow and flow distribution in the light and heat power station regulate and control to realize light and heat power station coordinated operation control.
Here, it should be noted that the main task of the hot salt flow control is to control the mass flow of the high-temperature molten salt according to the steam generator demand main control signal. In order to take into account the influence of the change in the molten salt temperature, the measured mass flow signal is corrected by the measured salt temperature signal.
In the present invention, in the case of the present invention, the photothermal power station-related measurement information includes: the measured hot salt temperature and the measured hot salt mass flow rate.
On this basis, referring to fig. 3, the controlling of the hot salt flow in the photothermal power station by using the steam generator demand master control signal and the photothermal power station related measurement information includes:
according to the measured hot salt temperature T hotsalt And rated temperature T rated Obtaining a heat value correction signal;
using the heat value correction signal to measure the thermohaline flow m hotsalt Correcting to obtain a corrected mass flow signal;
processing the steam generator demand master control signal (SGS demand master control signal) by using a signal processing function F (x) to obtain a processing result;
comparing the modified mass flow signal with the processing result (difference) to obtain a mass flow error signal;
generating a mass flow control signal by using a first PI controller according to the mass flow error signal;
and regulating and controlling the flow of the hot salt according to the mass flow control signal, namely controlling the opening or closing or opening size of the hot salt pump.
In addition, the measurement information related to the photothermal power station of the present invention further includes: superheated steam temperature and reheated steam temperature.
Effective control of superheated and reheated steam temperature is an important prerequisite for efficient operation of steam turbines. The stable steam temperature facilitates achieving higher turbine efficiency and reduces the risk of metal fatigue damage to the steam turbine.
On the basis, referring to fig. 4, the method for regulating and controlling the cold salt flow in the photothermal power station by using the steam generator demand master control signal and the photothermal power station related measurement information comprises the following steps:
regulating and controlling the actually measured hot salt temperature by using a bias signal to obtain a regulated and controlled hot salt temperature;
here, due to various reasons, the measured hot salt temperature and the actual hot salt temperature are generally different, and the difference is generally referred to as heat loss, so in order to compensate for the influence of the heat loss signal on the signal processing, the offset signal is introduced, which is equivalent to the heat loss signal, so that the regulated hot salt temperature is closer to the actual hot salt temperature.
Judging whether the regulated hot salt temperature is within a preset temperature range, if so, forming a first temperature error and a second temperature error with the superheated steam temperature and the superheated steam temperature respectively by utilizing the regulated hot salt temperature, generating a cold salt pump control signal by utilizing the first temperature error and the second temperature error by utilizing a second PI controller, and regulating and controlling the cold salt flow according to the cold salt pump control signal;
otherwise, respectively forming a first temperature error and a second temperature error by the endpoint temperature value of the preset temperature range and the temperature of the superheated steam, generating a cold salt pump control signal by the first temperature error and the second temperature error by using a second PI controller, and regulating and controlling the flow of cold salt according to the cold salt pump control signal.
Specifically, as long as the salt storage tank temperature is high enough, the temperature set point is equal to the designed nominal temperature, but if the salt Wen Da in the hot tank is less than the expected value, the temperature set point will be correspondingly limited to some lower level.
Therefore, when the cold salt flow is regulated, the temperature can be regulated by mixing hot salt with cold salt.
Optionally, the controlling the cold salt flow in the solar-thermal power station by using the steam generator demand master control signal and the solar-thermal power station related measurement information further comprises:
regulating and controlling the actually measured hot salt temperature by using a bias signal to obtain a regulated and controlled hot salt temperature;
judging whether the regulated hot salt temperature is within a preset temperature range, if so, forming a first temperature error and a second temperature error with the superheated steam temperature and the superheated steam temperature respectively by utilizing the regulated hot salt temperature, generating a cold salt pump control signal by utilizing the first temperature error and the second temperature error by utilizing a second PI controller, and regulating and controlling the cold salt flow according to the cold salt pump control signal;
otherwise, processing the regulated and controlled hot salt temperature by using a disturbance coefficient to obtain a processed hot salt temperature signal, forming a first temperature error and a second temperature error by respectively using the endpoint temperature value of the preset temperature range and the superheated steam temperature, generating an initial cold salt pump control signal by using a second PI controller according to the first temperature error and the second temperature error, and regulating and controlling the cold salt flow according to the initial cold salt pump control signal and the processed hot salt temperature signal.
Therefore, due to the existence of the disturbance coefficient K2, the regulated and controlled hot salt temperature value is regulated and controlled by the disturbance coefficient K2 and acts simultaneously with the initial cold salt pump control signal, and the disturbance speed can be increased.
Optionally, the regulating flow distribution in the photovoltaic power plant using the steam generator demand master control signal and the photovoltaic power plant related measurement information comprises:
and regulating and controlling the flow distribution in the photo-thermal power station by using the superheated steam temperature and the reheated steam temperature.
Referring to fig. 5, the controlling flow distribution in the photothermal power plant using the superheated steam temperature and the reheated steam temperature for solving the temperature imbalance problem of superheated, reheated steam includes:
obtaining a temperature difference signal according to the temperature of the superheated steam and the temperature of the reheated steam;
generating a superheater valve control signal and a reheater valve control signal from the temperature difference signal by using a third PI controller, wherein the superheater valve control signal and the reheater valve control signal present opposite trends for the two signals/signals with opposite trends;
and realizing flow distribution regulation and control in the photo-thermal power station by utilizing the superheater valve control signal and the reheater valve control signal.
The invention also provides a photo-thermal power station coordinated operation system based on the photo-thermal power station coordinated operation method, and the photo-thermal power station coordinated operation system at least comprises the following components:
the main control demand signal acquisition device is used for acquiring a main control demand signal of the steam generator;
and the coordination control device is used for utilizing the steam generator demand master control signal and the related measurement information of the photo-thermal power station to regulate and control the cold salt flow, the hot salt flow and the flow distribution in the photo-thermal power station so as to realize the photo-thermal power station coordination operation control.
Example 2:
the implementation case is developed under a cloudy condition, and is used for further explaining a specific operation principle of the control scheme provided by the invention. Typical setting parameters of the key modules in fig. 2-5 are given here, and the control effect under the typical parameter setting is given. Specific information is shown in table 1 and table 2, and referring to fig. 6, in this embodiment, the measured active power is used as a load demand input signal, and the coordination mode is selected as the master control mode. The final active power and pressure control effect is shown in fig. 7, and it can be seen that the overall power and pressure error is within ± 1%, and the control effect is good. As shown in fig. 8, the molten salt temperature appeared to be perturbed in steps at 400s and increased from 545 ℃ to 555 ℃. Without superheated steam temperature control, the superheated steam temperature rises rapidly in a few seconds, which threatens safe operation of the superheater and other components. In contrast, the conventional water spray desuperheating method and the proposed cold salt conditioning method can effectively control the temperature within the specified range within a period of time, but the former method requires more time (about 800 s) even if cascade control is adopted, while the proposed cold salt conditioning method only requires about 200 s. In addition, to eliminate the effect of traditional water spray attemperation on thermal efficiency, the reheat steam temperature is adjusted here by redistributing the molten salt flow. In this case, the conventional water spray attemperation method may cause the temperature fluctuation (from 1800s to 4400 s) of the reheated steam as presented in fig. 8. As for the drum level, it increases somewhat in the early stages of the temperature step, but then quickly returns to normal. Such results indicate that the temperature feed forward signal is effective in reducing the effects of temperature disturbances on steam generator key parameters.
In conclusion, the photo-thermal power station coordinated operation control method provided by the invention can fully exploit the quick load response characteristic of the photo-thermal power station while maintaining the stable main steam pressure, can better overcome the influence caused by internal and external disturbance such as molten salt temperature, load demand and water supply quantity, and realizes the efficient regulation and control of molten salt flow, steam temperature and steam drum water level.
TABLE 1 typical parameters of key modules of a Master control System
TABLE 2 typical parameters of key modules of sub-control system
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (10)
1. The photo-thermal power station coordinated operation control method is characterized by comprising the following steps:
acquiring a main control demand signal of the steam generator;
utilize steam generator demand master control signal and the relevant measurement information of light and heat power station are right cold salt flow, hot salt flow and flow distribution in the light and heat power station regulate and control to realize light and heat power station coordinated operation control.
2. The photo-thermal power station coordinated operation control method according to claim 1, wherein the steam generator master control demand signal is obtained by:
acquiring an external load demand instruction;
obtaining a unit load demand signal and a frequency correction signal according to the external load demand instruction;
obtaining a pressure set value of the steam generator according to the unit load demand signal;
obtaining a steam turbine error signal according to the unit load demand signal and the frequency correction signal;
generating an initial main control demand signal of the steam generator according to the pressure set value of the steam generator and the steam turbine error signal;
and regulating and controlling the initial main control demand signal of the steam generator by utilizing the feedforward signal to obtain the main control demand signal of the steam generator.
3. The coordinated operation control method for a photothermal power station according to claim 1, wherein said photothermal power station-related measurement information includes:
the measured hot salt temperature and the measured hot salt mass flow rate.
4. The photo-thermal power station coordinated operation control method of claim 3, wherein the controlling of the flow of hot salt in the photo-thermal power station using the steam generator demand master control signal and photo-thermal power station related measurement information comprises:
obtaining a heat value correction signal according to the actually measured hot salt temperature and the rated temperature;
correcting the measured thermohaline mass flow by using the heat value correction signal to obtain a corrected mass flow signal;
processing the steam generator demand master control signal by using a signal processing function to obtain a processing result;
comparing the corrected mass flow signal with the processing result to obtain a mass flow error signal;
generating a mass flow control signal by using a first PI controller according to the mass flow error signal;
and regulating and controlling the heat salt flow according to the mass flow control signal.
5. The coordinated operation control method for a photothermal power plant according to claim 3, wherein said photothermal power plant-related measurement information further comprises:
superheated steam temperature and reheat steam temperature.
6. The photo-thermal power station coordinated operation control method according to claim 5, wherein the controlling cold salt flow in the photo-thermal power station using the steam generator demand master control signal and photo-thermal power station related measurement information comprises:
regulating and controlling the actually measured hot salt temperature by using a bias signal to obtain a regulated and controlled hot salt temperature;
judging whether the regulated hot salt temperature is within a preset temperature range, if so, forming a first temperature error and a second temperature error with the superheated steam temperature and the superheated steam temperature respectively by utilizing the regulated hot salt temperature, generating a cold salt pump control signal by utilizing the first temperature error and the second temperature error by utilizing a second PI controller, and regulating and controlling the cold salt flow according to the cold salt pump control signal;
otherwise, respectively forming a first temperature error and a second temperature error by the endpoint temperature value of the preset temperature range and the temperature of the superheated steam, generating a cold salt pump control signal by the first temperature error and the second temperature error by using a second PI controller, and regulating and controlling the flow of cold salt according to the cold salt pump control signal.
7. The photo-thermal power station coordinated operation control method according to claim 5, wherein the controlling cold salt flow in the photo-thermal power station using the steam generator demand master control signal and photo-thermal power station related measurement information further comprises:
regulating and controlling the actually measured hot salt temperature by using a bias signal to obtain a regulated and controlled hot salt temperature;
judging whether the regulated hot salt temperature is within a preset temperature range, if so, forming a first temperature error and a second temperature error with the superheated steam temperature and the superheated steam temperature respectively by using the regulated hot salt temperature, generating a cold salt pump control signal by using the first temperature error and the second temperature error by using a second PI controller, and regulating and controlling the cold salt flow according to the cold salt pump control signal;
otherwise, processing the regulated and controlled hot salt temperature by using a disturbance coefficient to obtain a processed hot salt temperature signal, forming a first temperature error and a second temperature error by respectively using the endpoint temperature value of the preset temperature range and the superheated steam temperature, generating an initial cold salt pump control signal by using a second PI controller according to the first temperature error and the second temperature error, and regulating and controlling the cold salt flow according to the initial cold salt pump control signal and the processed hot salt temperature signal.
8. The photo-thermal power station coordinated operation control method according to any one of claims 5 to 7, wherein the regulation of flow distribution in the photo-thermal power station using the steam generator demand master control signal and photo-thermal power station related measurement information comprises:
and regulating and controlling the flow distribution in the photo-thermal power station by using the superheated steam temperature and the reheated steam temperature.
9. The photo thermal power station coordinated operation control method according to claim 8, wherein said utilizing the superheated steam temperature and the reheated steam temperature to regulate flow distribution in the photo thermal power station comprises:
obtaining a temperature difference signal according to the temperature of the superheated steam and the temperature of the reheated steam;
generating a superheater valve control signal and a reheater valve control signal from the temperature difference signal by using a third PI controller, wherein the superheater valve control signal and the reheater valve control signal are two signals with opposite trends;
and realizing flow distribution regulation and control in the photo-thermal power station by utilizing the superheater valve control signal and the reheater valve control signal.
10. A photo-thermal power station coordinated operation system based on the photo-thermal power station coordinated operation method according to any one of claims 1 to 9, characterized by comprising at least:
the main control demand signal acquisition device is used for acquiring a main control demand signal of the steam generator;
and the coordination control device is used for utilizing the steam generator demand master control signal and the related measurement information of the photo-thermal power station to regulate and control the cold salt flow, the hot salt flow and the flow distribution in the photo-thermal power station so as to realize the photo-thermal power station coordination operation control.
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