A photovoltaic-photothermal combined power generation active power coordination control method and device

Abstract

The present application relates to a kind of photovoltaic-photothermal combined power active power coordinated control method and device, comprising: according to the active power required by load determines the active power instruction value of photovoltaic power station and the active power instruction value of photothermal power station;Based on photovoltaic power station ultra-short-term predicted power and photothermal power station power up / down peak margin correction value, correct the active power instruction value of photovoltaic power station and the active power instruction value of photothermal power station;Control the active power output of photovoltaic power station is the active power instruction value of corrected photovoltaic power station, and the active power output of photothermal power station is the active power instruction value of corrected photothermal power station.The technical scheme provided by the present application controls the active power output of each photovoltaic power station grid-connected inverter and photothermal power station steam turbine generator unit, is conducive to the optimal scheduling of photovoltaic-photothermal combined power generation, reduces the light rejection rate of photovoltaic power generation, makes solar photovoltaic-photothermal combined power generation output power smooth, guarantees the safe and stable operation of power grid.

Description

Technical Field

[0001] The present invention relates to the technical field of solar power generation, and in particular to a method and device for coordinated control of active power of photovoltaic-photothermal combined power generation. Background Art

[0002] In recent years, with global warming and the gradual depletion of fossil fuels like coal and oil, there is an urgent need for new renewable energy sources to replace traditional power generation methods. As one of the cleanest and most direct forms of renewable energy in the world, rationally planning and utilizing solar power generation is a key measure to achieve the goal of energy conservation and emission reduction.

[0003] Currently, solar power generation is primarily divided into two types: photovoltaic (PV) and concentrated thermal (CSP). PV output is characterized by randomness and intermittence due to variations in solar irradiance, resulting in a high curtailment rate. This increases the uncertainty and insecurity of grid operation and fails to meet the grid's demand for active power. While CSP can improve output stability, it faces significant investment costs and a high cost per kilowatt-hour (COP). Therefore, a coordinated active power control method for combined PV and CSP generation is urgently needed. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a method and device for coordinated control of active power of photovoltaic-solar thermal combined power generation, so as to give full play to the regulation capability of solar thermal power generation, reduce the loss of photovoltaic power generation, improve the utilization rate of solar power generation, and realize the optimized scheduling of various new energy power generation.

[0005] The purpose of the present invention is achieved by adopting the following technical solutions:

[0006] The present invention provides a method for coordinated control of active power of photovoltaic-solar thermal combined power generation, wherein the method comprises:

[0007] Determine the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station according to the active power required by the load;

[0008] Based on the ultra-short-term predicted power of the photovoltaic power station and the power up / down peak regulation margin correction value of the solar thermal power station, the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station are corrected;

[0009] The active power output of the photovoltaic power station is controlled to be the corrected active power command value of the photovoltaic power station, and the active power output of the solar thermal power station is controlled to be the corrected active power command value of the solar thermal power station.

[0010] Preferably, determining the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station according to the active power required by the load includes:

[0011] Obtain the total amount of active power reduction of the photovoltaic-thermal combined power station based on the active power required by the load;

[0012] Compare the total active power reduction of the photovoltaic-solar thermal power station with the sum of the power reduction peak margin of each solar thermal power station, and determine the active power command value of each photovoltaic power station and each solar thermal power station based on the comparison results.

[0013] Furthermore, obtaining the total amount of active power reduction of the photovoltaic-solar thermal power station according to the active power required by the load includes:

[0014] When P Lmax ≥P PV_pre +P CSP_pre When the total active power of the photovoltaic-thermal power station is reduced by ΔP D_plan =0;

[0015] When P Lmax <P PV_pre +P CSP_pre When the total active power reduction ΔP of the photovoltaic-thermal combined power station is determined by the following formula D_plan :

[0016] ΔP D_plan =P PV_pre +P CSP_pre -P Lmax

[0017] Among them, P Lmax is the active power required by the load, P PV_pre is the sum of the short-term predicted power of each photovoltaic power station, P PV_i_pre is the short-term predicted power of the i-th photovoltaic power station, N PV is the number of photovoltaic power stations, P CSP_pre is the sum of the recommended powers of all CSP plants, N CSP is the number of CSP plants, P CSP_e_pre is the recommended power of the e-th CSP plant.

[0018] Furthermore, the comparing the total amount of active power reduction of the photovoltaic-solar thermal power station and the sum of the power reduction peak margins of each solar thermal power station, and determining the active power command value of each photovoltaic power station and each solar thermal power station according to the comparison result, includes:

[0019] When the total amount of active power reduction of the photovoltaic power station and the solar thermal power station is less than or equal to the sum of the power peak reduction margins of each solar thermal power station, the active power command value P of the e-th solar thermal power station is determined according to the following formula: CSP_e_plan :

[0020]

[0021] The active power command value P of the i-th photovoltaic power station is determined by the following formula: PV_i_plan :

[0022] P PV_i_plan =P PV_i_pre

[0023] in, is the peak margin reduction of the e-th CSP station, is the peak regulation margin of the e-th CSP power station, P CSP_e_pre is the recommended power of the e-th CSP plant, is the sum of the peak regulation margins of each CSP station. P PV_i_pre Short-term power forecast for the i-th photovoltaic power station;

[0024] When the total amount of active power reduction of the photovoltaic power station and the solar thermal power station is greater than the sum of the power peak reduction margins of each solar thermal power station, the active power command value P of the e-th solar thermal power station is determined according to the following formula: CSP_e_plan :

[0025]

[0026] The active power command value P of the i-th photovoltaic power station is determined by the following formula: PV_i_plan :

[0027] P PV_i_plan =P PV_i_pre -ΔP PV_i_plan

[0028] in, is the peak margin reduction of the e-th CSP station, is the peak regulation margin of the e-th CSP power station, ΔP PV_i_plan is the active power reduction of the i-th photovoltaic power station, ΔP PV_plan is the total amount of power required to be reduced by the photovoltaic power station, P PV_i_pre is the short-term predicted power of the i-th photovoltaic power station, P CSP_e_pre is the recommended power of the e-th CSP plant.

[0029] Furthermore, before correcting the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station based on the ultra-short-term predicted power of the photovoltaic power station and the power up / down peak regulation margin correction value of the solar thermal power station, the method includes:

[0030] Determine the peak regulation margin correction value of the e-th CSP power station by the following formula:

[0031]

[0032] Determine the peak margin correction value of the power increase of the e-th CSP station as follows:

[0033]

[0034] In the above formula, is the power peak margin reduction of the e-th CSP station, is the peak regulation margin of the e-th CSP power station, The peak margin for the power increase of the e-th CSP station.

[0035] Preferably, the correcting of the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station based on the ultra-short-term predicted power of the photovoltaic power station and the power up / down peak regulation margin correction value of the solar thermal power station includes:

[0036] Determine the relationship between the ultra-short-term power forecast value of each photovoltaic power station and the active power command value of each photovoltaic power station;

[0037] When the ultra-short-term power forecast values ​​of each photovoltaic power station are greater than the active power command values ​​of each photovoltaic power station, the active power command values ​​of each photovoltaic power station and each solar thermal power station are corrected according to the peak regulation margin correction value of the solar thermal power station;

[0038] When the ultra-short-term power forecast values ​​of each photovoltaic power station are all less than the active power command values ​​of each photovoltaic power station, the active power command values ​​of each photovoltaic power station and each solar thermal power station are corrected according to the power peak regulation margin correction value of the solar thermal power station;

[0039] When the ultra-short-term power prediction value of each photovoltaic power station is equal to the active power command value of each photovoltaic power station, the active power command value of each photovoltaic power station and the active power command value of each solar thermal power station remain unchanged.

[0040] Furthermore, the correcting of the active power command values ​​of each photovoltaic power station and the active power command value of the solar thermal power station according to the peak regulation margin correction value of the solar thermal power station power includes:

[0041] When the power of each CSP station is reduced, the sum of the peak margin correction values hour:

[0042] Then the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station remain unchanged;

[0043] When the power of each CSP station is reduced, the sum of the peak margin correction values and hour:

[0044] Then through the formula Correct the active power command value of each photovoltaic power station:

[0045] For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged;

[0046] For a CSP station with power peak regulation margin, the formula P CSP_e_nplan =P CSP_e_X Correct the active power command value of the corresponding CSP plant:

[0047] When the power of each CSP station is reduced, the sum of the peak margin correction values and hour:

[0048] Then, through the formula P PV_i_nplan =P PV_i_spre Correct the active power command value of each photovoltaic power station:

[0049] For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged;

[0050] For a CSP plant with power peak regulation margin, the formula Correct the active power command value of the corresponding CSP plant;

[0051] Where, is the peak regulation margin correction value of the e-th CSP power station, Ncsp is the number of CSP stations, ΔP PV_uadj The power of the part where the sum of the ultra-short-term predicted power of the photovoltaic power station exceeds the sum of the active power command values, ΔP PV_uadj =P spre -P PV_plan , P PV_i_nplan is the corrected active power command value of the i-th photovoltaic power station, P CSP_e_nplan is the corrected active power command value of the e-th CSP station, P PV_plan is the sum of the active power command values ​​of the photovoltaic power station, P spre is the sum of the ultra-short-term power prediction values ​​of the photovoltaic power station, P PV_i_spre is the ultra-short-term predicted power value of the i-th photovoltaic power station, Npv is the number of photovoltaic power stations, P PV_i_plan is the active power command value of the i-th photovoltaic power station, P CSP_e_plan is the active power command value of the e-th CSP station, P CSP_e_X is the minimum technical output value of the e-th CSP station.

[0052] Furthermore, the correcting of the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station according to the peak regulation margin correction value of the solar thermal power station includes:

[0053] when hour:

[0054] Then, through the formula P PV_i_nplan =P PV_i_spre Correct the active power command value of each photovoltaic power station:

[0055] For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged;

[0056] For a CSP station with power peak regulation margin, the formula P CSP_e_nplan =P CSP_e_E Correct the active power command value of the corresponding CSP plant:

[0057] when hour:

[0058] Then, through the formula P PV_i_nplan =P PV_i_spre Correct the active power command value of each photovoltaic power station:

[0059] For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged;

[0060] For a CSP station with power peak regulation margin, the formula Correct the active power command value of the corresponding CSP plant;

[0061] Where, is the sum of the peak margin correction values ​​of each CSP station, Ncsp is the number of CSP plants, ΔP PV_dadj The power value of the part where the sum of the ultra-short-term predicted power of the photovoltaic power station is lower than the sum of the active power command values, ΔP PV_dadj =P PV_plan -P spre , P spre is the sum of the ultra-short-term power prediction values ​​of the photovoltaic power station, P PV_i_spre is the ultra-short-term predicted power value of the i-th photovoltaic power station, Npv is the number of photovoltaic power stations, is the peak regulation margin correction value of the e-th CSP power station, P CSP_e_E is the rated active power of the e-th CSP station, P CSP_e_plan is the active power command value of the e-th CSP station, P PV_i_plan is the active power command value of the i-th photovoltaic power station, P PV_i_nplan is the corrected active power command value of the i-th photovoltaic power station, P CSP_e_nplanThe present invention provides a photovoltaic-thermal combined power generation active power coordinated control device, the improvement of which is that the device comprises:

[0062] A first determining module is used to determine the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station according to the active power required by the load;

[0063] A correction module is used to correct the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station based on the ultra-short-term predicted power of the photovoltaic power station and the power up / down peak regulation margin correction value of the solar thermal power station;

[0064] The control module is used to control the active power output of the photovoltaic power station to be the corrected active power command value of the photovoltaic power station, and the active power output of the solar thermal power station to be the corrected active power command value of the solar thermal power station.

[0065] Preferably, the first determining module includes:

[0066] An acquisition unit, configured to acquire a total amount of active power reduction of the photovoltaic-solar thermal power station according to the active power required by the load;

[0067] The determination unit is used to compare the total amount of active power reduction of the photovoltaic-solar thermal power station with the sum of the power reduction peak margin of each solar thermal power station, and determine the active power command value of each photovoltaic power station and each solar thermal power station according to the comparison result.

[0068] Furthermore, the acquisition unit is used to:

[0069] When P Lmax ≥P PV_pre +P CSP_pre When the total active power of the photovoltaic-thermal power station is reduced by ΔP D_plan =0;

[0070] When P Lmax <P PV_pre +P CSP_pre When the total active power reduction ΔP of the photovoltaic-thermal combined power station is determined by the following formula D_plan :

[0071] ΔP D_plan =P PV_pre +P CSP_pre -P Lmax

[0072] Among them, P Lmax is the active power required by the load, P PV_pre is the sum of the short-term predicted power of each photovoltaic power station, P PV_i_pre is the short-term predicted power of the i-th photovoltaic power station, NPV is the number of photovoltaic power stations, P CSP_pre is the sum of the recommended powers of all CSP plants, N CSP is the number of CSP plants, P CSP_e_pre is the recommended power of the e-th CSP plant.

[0073] Furthermore, the determining unit is configured to:

[0074] When the total amount of active power reduction of the photovoltaic power station and the solar thermal power station is less than or equal to the sum of the power peak reduction margins of each solar thermal power station, the active power command value P of the e-th solar thermal power station is determined according to the following formula: CSP_e_plan :

[0075]

[0076] The active power command value P of the i-th photovoltaic power station is determined by the following formula: PV_i_plan :

[0077] P PV_i_plan =P PV_i_pre

[0078] in, is the peak margin reduction of the e-th CSP station, is the peak regulation margin of the e-th CSP power station, P CSP_e_pre is the recommended power of the e-th CSP plant, is the sum of the peak regulation margins of each CSP station. P PV_i_pre Short-term power forecast for the i-th photovoltaic power station;

[0079] When the total amount of active power reduction of the photovoltaic power station and the solar thermal power station is greater than the sum of the power peak reduction margins of each solar thermal power station, the active power command value P of the e-th solar thermal power station is determined according to the following formula: CSP_e_plan :

[0080]

[0081] The active power command value P of the i-th photovoltaic power station is determined by the following formula: PV_i_plan :

[0082] P PV_i_plan =P PV_i_pre -ΔP PV_i_plan

[0083] in, is the peak margin reduction of the e-th CSP station, is the peak regulation margin of the e-th CSP power station, ΔP PV_i_planis the active power reduction of the i-th photovoltaic power station, ΔP PV_plan is the total amount of power required to be reduced by the photovoltaic power station, P PV_i_pre is the short-term predicted power of the i-th photovoltaic power station, P CSP_e_pre is the recommended power of the e-th CSP plant.

[0084] Furthermore, the apparatus further includes: a second determining module, configured to:

[0085] Determine the peak regulation margin correction value of the e-th CSP power station by the following formula:

[0086]

[0087] Determine the peak margin correction value of the power increase of the e-th CSP station as follows:

[0088]

[0089] In the above formula, is the power peak margin reduction of the e-th CSP station, is the peak regulation margin of the e-th CSP power station, The peak margin for the power increase of the e-th CSP station.

[0090] Preferably, the correction module is used to:

[0091] A judgment unit, used to judge the relationship between the ultra-short-term power prediction value of each photovoltaic power station and the active power command value of each photovoltaic power station;

[0092] When the ultra-short-term power forecast values ​​of each photovoltaic power station are greater than the active power command values ​​of each photovoltaic power station, the active power command values ​​of each photovoltaic power station and each solar thermal power station are corrected according to the peak regulation margin correction value of the solar thermal power station;

[0093] When the ultra-short-term power forecast values ​​of each photovoltaic power station are all less than the active power command values ​​of each photovoltaic power station, the active power command values ​​of each photovoltaic power station and each solar thermal power station are corrected according to the power peak regulation margin correction value of the solar thermal power station;

[0094] When the ultra-short-term power prediction value of each photovoltaic power station is equal to the active power command value of each photovoltaic power station, the active power command value of each photovoltaic power station and the active power command value of each solar thermal power station remain unchanged.

[0095] Furthermore, the correcting of the active power command values ​​of each photovoltaic power station and the active power command value of the solar thermal power station according to the peak regulation margin correction value of the solar thermal power station power includes:

[0096] When the power of each CSP station is reduced, the sum of the peak margin correction values hour:

[0097] Then the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station remain unchanged;

[0098] When the power of each CSP station is reduced, the sum of the peak margin correction values and hour:

[0099] Then through the formula Correct the active power command value of each photovoltaic power station:

[0100] For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged;

[0101] For a CSP station with power peak regulation margin, the formula P CSP_e_nplan =P CSP_e_X Correct the active power command value of the corresponding CSP plant:

[0102] When the power of each CSP station is reduced, the sum of the peak margin correction values and hour:

[0103] Then, through the formula P PV_i_nplan =P PV_i_spre Correct the active power command value of each photovoltaic power station:

[0104] For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged;

[0105] For a CSP plant with power peak regulation margin, the formula Correct the active power command value of the corresponding CSP plant;

[0106] Where, is the peak regulation margin correction value of the e-th CSP power station, Ncsp is the number of CSP stations, ΔP PV_uadj The power of the part where the sum of the ultra-short-term predicted power of the photovoltaic power station exceeds the sum of the active power command values, ΔP PV_uadj =P spre -P PV_plan , P PV_i_nplan is the corrected active power command value of the i-th photovoltaic power station, P CSP_e_nplan is the corrected active power command value of the e-th CSP station, P PV_plan is the sum of the active power command values ​​of the photovoltaic power station, P spre is the sum of the ultra-short-term power prediction values ​​of the photovoltaic power station, P PV_i_spreis the ultra-short-term predicted power value of the i-th photovoltaic power station, Npv is the number of photovoltaic power stations, P PV_i_plan is the active power command value of the i-th photovoltaic power station, P CSP_e_plan is the active power command value of the e-th CSP station, P CSP_e_X is the minimum technical output value of the e-th CSP station.

[0107] Furthermore, the correcting of the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station according to the peak regulation margin correction value of the solar thermal power station includes:

[0108] when hour:

[0109] Then, through the formula P PV_i_nplan =P PV_i_spre Correct the active power command value of each photovoltaic power station:

[0110] For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged;

[0111] For a CSP station with power peak regulation margin, the formula P CSP_e_nplan =P CSP_e_E Correct the active power command value of the corresponding CSP plant:

[0112] when hour:

[0113] Then, through the formula P PV_i_nplan =P PV_i_spre Correct the active power command value of each photovoltaic power station:

[0114] For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged;

[0115] For a CSP station with power peak regulation margin, the formula Correct the active power command value of the corresponding CSP plant;

[0116] Where, is the sum of the peak margin correction values ​​of each CSP station, Ncsp is the number of CSP plants, ΔP PV_dadj The power value of the part where the sum of the ultra-short-term predicted power of the photovoltaic power station is lower than the sum of the active power command values, ΔP PV_dadj =P PV_plan -P spre , P spre is the sum of the ultra-short-term power prediction values ​​of the photovoltaic power station, P PV_i_spre is the ultra-short-term predicted power value of the i-th photovoltaic power station, Npv is the number of photovoltaic power stations, is the peak regulation margin correction value of the e-th CSP power station, P CSP_e_E is the rated active power of the e-th CSP station, P CSP_e_plan is the active power command value of the e-th CSP station, P PV_i_plan is the active power command value of the i-th photovoltaic power station, P PV_i_nplan is the corrected active power command value of the i-th photovoltaic power station, P CSP_e_nplan is the corrected active power command value of the e-th CSP plant.

[0117] Compared with the closest prior art, the present invention has the following beneficial effects:

[0118] The present invention provides a method and device for coordinated control of active power in photovoltaic-solar thermal power generation. The method determines the active power command values ​​of the photovoltaic power station and the solar thermal power station based on the active power required by the load; corrects the active power command values ​​of the photovoltaic power station and the solar thermal power station based on the ultra-short-term predicted power of the photovoltaic power station and the upward / downward peak regulation margin correction value of the solar thermal power station; and controls the active power output of the photovoltaic power station to be the corrected active power command value of the photovoltaic power station, and the active power output of the solar thermal power station to be the corrected active power command value of the solar thermal power station. The technical solution provided by the present invention facilitates the optimized scheduling of photovoltaic-solar thermal power generation by controlling the active power output of the grid-connected inverters of each photovoltaic power station and the steam turbine generator sets of the solar thermal power station, reduces the curtailment rate of photovoltaic power generation, stabilizes the output power of the solar photovoltaic-solar thermal power generation, and ensures the safe and stable operation of the power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0119] Figure 1 This is a flow chart of a method for coordinated control of active power of photovoltaic-solar thermal combined power generation provided by the present invention;

[0120] Figure 2 This is a short-term prediction power adjustment flow chart of a photovoltaic-solar thermal combined power generation active power coordinated control method provided by the present invention;

[0121] Figure 3 The present invention provides a power adjustment flow chart when the ultra-short-term predicted power of each photovoltaic power station is greater than the active power command value of each photovoltaic power station;

[0122] Figure 4 The present invention provides a power adjustment flow chart when the ultra-short-term predicted power of each photovoltaic power station is less than the active power command value of each photovoltaic power station; Figure 5 This is a structural diagram of a photovoltaic-solar-thermal combined power generation active power coordination control device provided by the present invention. DETAILED DESCRIPTION

[0123] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0124] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0125] The present invention provides a method for coordinated control of active power of photovoltaic-thermal combined power generation, such as Figure 1 As shown, the method includes:

[0126] Determine the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station according to the active power required by the load;

[0127] Based on the ultra-short-term predicted power of the photovoltaic power station and the power up / down peak regulation margin correction value of the solar thermal power station, the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station are corrected;

[0128] The active power output of the photovoltaic power station is controlled to be the corrected active power command value of the photovoltaic power station, and the active power output of the solar thermal power station is controlled to be the corrected active power command value of the solar thermal power station.

[0129] Specifically, such as Figure 2 As shown, the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station are determined according to the active power required by the load, including:

[0130] Obtain the total amount of active power reduction of the photovoltaic-thermal combined power station based on the active power required by the load;

[0131] Compare the total active power reduction of the photovoltaic-solar thermal power station with the sum of the power reduction peak margin of each solar thermal power station, and determine the active power command value of each photovoltaic power station and each solar thermal power station based on the comparison results.

[0132] The step of obtaining the total amount of active power reduction of the photovoltaic-solar thermal power station according to the active power required by the load includes:

[0133] When P Lmax ≥P PV_pre +P CSP_pre When the total active power of the photovoltaic-thermal power station is reduced by ΔP D_plan =0, the dispatching agency uses the predicted power and recommended power reported by each power station as the active power command value of each power station, and sends it to each power station separately. Each power station controls the active power output according to the power command value;

[0134] When P Lmax <P PV_pre +P CSP_pre When the active power command value of the CSP station is reduced within the range of the CSP station's peak capacity reduction, the active power command value of the CSP station is reduced first, and then the power command value of the PV station is reduced. The total active power reduction amount ΔP of the PV-CSP combined power station is determined by the following formula: D_plan :

[0135] ΔP D_plan =P PV_pre +P CSP_pre -P Lmax

[0136] Among them, P Lmax is the active power required by the load, P PV_pre is the sum of the short-term predicted power of each photovoltaic power station, P PV_i_pre is the short-term predicted power of the i-th photovoltaic power station, N PV is the number of photovoltaic power stations, P CSP_pre is the sum of the recommended powers of all CSP plants, N CSP is the number of CSP plants, P CSP_e_pre is the recommended power of the e-th CSP plant.

[0137] The comparing the total amount of active power reduction of the photovoltaic-solar thermal power station and the sum of the power reduction peak margins of each solar thermal power station, and determining the active power command values ​​of each photovoltaic power station and each solar thermal power station according to the comparison result, includes:

[0138] When the total amount of active power reduction of the photovoltaic power station and the solar thermal power station is less than or equal to the sum of the power peak reduction margins of each solar thermal power station, the active power command value P of the e-th solar thermal power station is determined according to the following formula: CSP_e_plan :

[0139]

[0140] The active power command value P of the i-th photovoltaic power station is determined by the following formula: PV_i_plan :

[0141] P PV_i_plan =P PV_i_pre

[0142] in, is the peak margin reduction of the e-th CSP station, is the peak regulation margin of the e-th CSP power station, P CSP_e_pre is the recommended power of the e-th CSP plant, is the sum of the peak regulation margins of each CSP station. PPV_i_pre Short-term power forecast for the i-th photovoltaic power station;

[0143] When the total amount of active power reduction of the photovoltaic power station and the solar thermal power station is greater than the sum of the power peak reduction margins of each solar thermal power station, the active power command value P of the e-th solar thermal power station is determined according to the following formula: CSP_e_plan :

[0144]

[0145] The active power command value P of the i-th photovoltaic power station is determined by the following formula: PV_i_plan :

[0146] P PV_i_plan =P PV_i_pre -ΔP PV_i_plan

[0147] in, is the peak margin reduction of the e-th CSP station, is the peak regulation margin of the e-th CSP power station, ΔP PV_i_plan is the active power reduction of the i-th photovoltaic power station, ΔP PV_plan is the total amount of power required to be reduced by the photovoltaic power station, P PV_i_pre is the short-term predicted power of the i-th photovoltaic power station, P CSP_e_pre is the recommended power of the e-th CSP plant.

[0148] In the preferred embodiment of the present invention, before correcting the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station based on the ultra-short-term predicted power of the photovoltaic power station and the power up / down peak regulation margin correction value of the solar thermal power station, the method includes:

[0149] Determine the peak regulation margin correction value of the e-th CSP power station by the following formula:

[0150]

[0151] Determine the peak margin correction value of the power increase of the e-th CSP station as follows:

[0152]

[0153] In the above formula, if but is the power peak margin reduction of the e-th CSP station, is the peak regulation margin of the e-th CSP power station, The peak margin for the power increase of the e-th CSP station.

[0154] In the optimal embodiment of the present invention, during actual operation, fluctuations in solar irradiance can cause fluctuations in solar power generation, especially photovoltaic power generation. In particular, in cloudy weather, the fluctuations in photovoltaic power generation are large and last for a long time. Therefore, the photovoltaic power station needs to report its ultra-short-term power forecast to the dispatching agency every five minutes. However, due to the inertia of the heat exchange system, steam turbine power generation system, and heat storage system, the CSP power station can suppress rapid power fluctuations and maintain power stability, without the need to report ultra-short-term forecasts. Therefore, the real-time correction of power is achieved by, on the one hand, the dispatching agency correcting the power control instructions of the photovoltaic power station based on the ultra-short-term predicted power of the photovoltaic power station, and, on the other hand, correcting the power control instructions of the CSP power station using the adjustment margin of the CSP power station.

[0155] Specifically, the correcting of the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station based on the ultra-short-term predicted power of the photovoltaic power station and the power up / down peak regulation margin correction value of the solar thermal power station includes:

[0156] Determine the relationship between the ultra-short-term power forecast value of each photovoltaic power station and the active power command value of each photovoltaic power station;

[0157] When the ultra-short-term power forecast values ​​of each photovoltaic power station are greater than the active power command values ​​of each photovoltaic power station, the active power command values ​​of each photovoltaic power station and each solar thermal power station are corrected according to the peak regulation margin correction value of the solar thermal power station;

[0158] When the ultra-short-term power forecast values ​​of each photovoltaic power station are all less than the active power command values ​​of each photovoltaic power station, the active power command values ​​of each photovoltaic power station and each solar thermal power station are corrected according to the power peak regulation margin correction value of the solar thermal power station;

[0159] When the ultra-short-term power prediction value of each photovoltaic power station is equal to the active power command value of each photovoltaic power station, the active power command value of each photovoltaic power station and the active power command value of each solar thermal power station remain unchanged.

[0160] Further, such as Figure 3 As shown, the method of correcting the active power command value of each photovoltaic power station and the active power command value of the solar thermal power station according to the peak regulation margin correction value of the solar thermal power station power includes:

[0161] When the power of each CSP station is reduced, the sum of the peak margin correction values hour:

[0162] Then the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station remain unchanged;

[0163] When the power of each CSP station is reduced, the sum of the peak margin correction values and hour:

[0164] Then through the formula Correct the active power command value of each photovoltaic power station:

[0165] For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged;

[0166] For a CSP station with power peak regulation margin, the formula P CSP_e_nplan =P CSP_e_X Correct the active power command value of the corresponding CSP plant:

[0167] When the power of each CSP station is reduced, the sum of the peak margin correction values and hour:

[0168] Then, through the formula P PV_i_nplan =P PV_i_spre Correct the active power command value of each photovoltaic power station:

[0169] For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged;

[0170] For a CSP plant with power peak regulation margin, the formula Correct the active power command value of the corresponding CSP plant;

[0171] Where, is the peak regulation margin correction value of the e-th CSP power station, Ncsp is the number of CSP stations, ΔP PV_uadj The power of the part where the sum of the ultra-short-term predicted power of the photovoltaic power station exceeds the sum of the active power command values, ΔP PV_uadj =P spre -P PV_plan , P PV_i_nplan is the corrected active power command value of the i-th photovoltaic power station, P CSP_e_nplan is the corrected active power command value of the e-th CSP station, P PV_plan is the sum of the active power command values ​​of the photovoltaic power station, P spre is the sum of the ultra-short-term power prediction values ​​of the photovoltaic power station, P PV_i_spre is the ultra-short-term predicted power value of the i-th photovoltaic power station, Npv is the number of photovoltaic power stations, P PV_i_plan is the active power command value of the i-th photovoltaic power station, P CSP_e_plan is the active power command value of the e-th CSP station, P CSP_e_X is the minimum technical output value of the e-th CSP station.

[0172] Further, such as Figure 4As shown, the method of correcting the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station according to the peak regulation margin correction value of the solar thermal power station includes:

[0173] when hour:

[0174] Then, through the formula P PV_i_nplan =P PV_i_spre Correct the active power command value of each photovoltaic power station:

[0175] For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged;

[0176] For a CSP station with power peak regulation margin, the formula P CSP_e_nplan =P CSP_e_E Correct the active power command value of the corresponding CSP plant:

[0177] when hour:

[0178] Then, through the formula P PV_i_nplan =P PV_i_spre Correct the active power command value of each photovoltaic power station:

[0179] For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged;

[0180] For a CSP station with power peak regulation margin, the formula Correct the active power command value of the corresponding CSP plant;

[0181] Where, is the sum of the peak margin correction values ​​of each CSP station, Ncsp is the number of CSP plants, ΔP PV_dadj The power value of the part where the sum of the ultra-short-term predicted power of the photovoltaic power station is lower than the sum of the active power command values, ΔP PV_dadj =P PV_plan -P spre , P spre is the sum of the ultra-short-term power prediction values ​​of the photovoltaic power station, P PV_i_spre is the ultra-short-term predicted power value of the i-th photovoltaic power station, Npv is the number of photovoltaic power stations, is the peak regulation margin correction value of the e-th CSP power station, P CSP_e_E is the rated active power of the e-th CSP station, P CSP_e_plan is the active power command value of the e-th CSP station, P PV_i_plan is the active power command value of the i-th photovoltaic power station, P PV_i_nplanis the corrected active power command value of the i-th photovoltaic power station, P CSP_e_nplan is the corrected active power command value of the e-th CSP plant.

[0182] The present invention provides a photovoltaic-thermal combined power generation active power coordination control device, such as Figure 5 As shown, the device includes:

[0183] A first determining module is used to determine the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station according to the active power required by the load;

[0184] A correction module is used to correct the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station based on the ultra-short-term predicted power of the photovoltaic power station and the power up / down peak regulation margin correction value of the solar thermal power station;

[0185] The control module is used to control the active power output of the photovoltaic power station to be the corrected active power command value of the photovoltaic power station, and the active power output of the solar thermal power station to be the corrected active power command value of the solar thermal power station.

[0186] Specifically, the first determining module includes:

[0187] An acquisition unit, configured to acquire a total amount of active power reduction of the photovoltaic-solar thermal power station according to the active power required by the load;

[0188] The determination unit is used to compare the total amount of active power reduction of the photovoltaic-solar thermal power station with the sum of the power reduction peak margin of each solar thermal power station, and determine the active power command value of each photovoltaic power station and each solar thermal power station according to the comparison result.

[0189] Wherein, the acquisition unit is used to:

[0190] When P Lmax ≥P PV_pre +P CSP_pre When the total active power of the photovoltaic-thermal power station is reduced by ΔP D_plan =0;

[0191] When P Lmax <P PV_pre +P CSP_pre When the total active power reduction ΔP of the photovoltaic-thermal combined power station is determined by the following formula D_plan :

[0192] ΔP D_plan =P PV_pre +P CSP_pre -P Lmax

[0193] Among them, P Lmax is the active power required by the load, P PV_preis the sum of the short-term predicted power of each photovoltaic power station, P PV_i_pre is the short-term predicted power of the i-th photovoltaic power station, N PV is the number of photovoltaic power stations, P CSP_pre is the sum of the recommended powers of all CSP plants, N CSP is the number of CSP plants, P CSP_e_pre is the recommended power of the e-th CSP plant.

[0194] The determining unit is configured to:

[0195] When the total amount of active power reduction of the photovoltaic power station and the solar thermal power station is less than or equal to the sum of the power peak reduction margins of each solar thermal power station, the active power command value P of the e-th solar thermal power station is determined according to the following formula: CSP_e_plan :

[0196]

[0197] The active power command value P of the i-th photovoltaic power station is determined by the following formula: PV_i_plan :

[0198] P PV_i_plan =P PV_i_pre

[0199] in, is the peak margin reduction of the e-th CSP station, is the peak regulation margin of the e-th CSP power station, P CSP_e_pre is the recommended power of the e-th CSP plant, is the sum of the peak regulation margins of each CSP station. P PV_i_pre Short-term power forecast for the i-th photovoltaic power station;

[0200] When the total amount of active power reduction of the photovoltaic power station and the solar thermal power station is greater than the sum of the power peak reduction margins of each solar thermal power station, the active power command value P of the e-th solar thermal power station is determined according to the following formula: CSP_e_plan :

[0201]

[0202] The active power command value P of the i-th photovoltaic power station is determined by the following formula: PV_i_plan :

[0203] P PV_i_plan =P PV_i_pre -ΔP PV_i_plan

[0204] in, is the peak margin reduction of the e-th CSP station, is the peak regulation margin of the e-th CSP power station, ΔP PV_i_plan is the active power reduction of the i-th photovoltaic power station, ΔP PV_plan is the total amount of power required to be reduced by the photovoltaic power station, P PV_i_pre is the short-term predicted power of the i-th photovoltaic power station, P CSP_e_pre is the recommended power of the e-th CSP plant.

[0205] In a preferred embodiment of the present invention, the apparatus further comprises: a second determining module configured to:

[0206] Determine the peak regulation margin correction value of the e-th CSP power station by the following formula:

[0207]

[0208] Determine the peak margin correction value of the power increase of the e-th CSP station as follows:

[0209]

[0210] In the above formula, is the power peak margin reduction of the e-th CSP station, is the peak regulation margin of the e-th CSP power station, The peak margin for the power increase of the e-th CSP station.

[0211] Specifically, the correction module is used to:

[0212] A judgment unit, used to judge the relationship between the ultra-short-term power prediction value of each photovoltaic power station and the active power command value of each photovoltaic power station;

[0213] When the ultra-short-term power forecast values ​​of each photovoltaic power station are greater than the active power command values ​​of each photovoltaic power station, the active power command values ​​of each photovoltaic power station and each solar thermal power station are corrected according to the peak regulation margin correction value of the solar thermal power station;

[0214] When the ultra-short-term power forecast values ​​of each photovoltaic power station are all less than the active power command values ​​of each photovoltaic power station, the active power command values ​​of each photovoltaic power station and each solar thermal power station are corrected according to the power peak regulation margin correction value of the solar thermal power station;

[0215] When the ultra-short-term power prediction value of each photovoltaic power station is equal to the active power command value of each photovoltaic power station, the active power command value of each photovoltaic power station and the active power command value of each solar thermal power station remain unchanged.

[0216] Furthermore, the correcting of the active power command values ​​of each photovoltaic power station and the active power command value of the solar thermal power station according to the peak regulation margin correction value of the solar thermal power station power includes:

[0217] When the power of each CSP station is reduced, the sum of the peak margin correction values hour:

[0218] Then the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station remain unchanged;

[0219] When the power of each CSP station is reduced, the sum of the peak margin correction values and hour:

[0220] Then through the formula Correct the active power command value of each photovoltaic power station:

[0221] For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged;

[0222] For a CSP station with power peak regulation margin, the formula P CSP_e_nplan =P CSP_e_X Correct the active power command value of the corresponding CSP plant:

[0223] When the power of each CSP station is reduced, the sum of the peak margin correction values and hour:

[0224] Then, through the formula P PV_i_nplan =P PV_i_spre Correct the active power command value of each photovoltaic power station:

[0225] For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged;

[0226] For a CSP plant with power peak regulation margin, the formula Correct the active power command value of the corresponding CSP plant;

[0227] Where, is the peak regulation margin correction value of the e-th CSP power station, Ncsp is the number of CSP stations, ΔP PV_uadj The power of the part where the sum of the ultra-short-term predicted power of the photovoltaic power station exceeds the sum of the active power command values, ΔP PV_uadj =P spre -P PV_plan , P PV_i_nplan is the corrected active power command value of the i-th photovoltaic power station, P CSP_e_nplan is the corrected active power command value of the e-th CSP station, PPV_plan is the sum of the active power command values ​​of the photovoltaic power station, P spre is the sum of the ultra-short-term power prediction values ​​of the photovoltaic power station, P PV_i_spre is the ultra-short-term predicted power value of the i-th photovoltaic power station, Npv is the number of photovoltaic power stations, P PV_i_plan is the active power command value of the i-th photovoltaic power station, P CSP_e_plan is the active power command value of the e-th CSP station, P CSP_e_X is the minimum technical output value of the e-th CSP station.

[0228] Furthermore, the correcting of the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station according to the peak regulation margin correction value of the solar thermal power station includes:

[0229] when hour:

[0230] Then, through the formula P PV_i_nplan =P PV_i_spre Correct the active power command value of each photovoltaic power station:

[0231] For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged;

[0232] For a CSP station with power peak regulation margin, the formula P CSP_e_nplan =P CSP_e_E Correct the active power command value of the corresponding CSP plant:

[0233] when hour:

[0234] Then, through the formula P PV_i_nplan =P PV_i_spre Correct the active power command value of each photovoltaic power station:

[0235] For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged;

[0236] For a CSP station with power peak regulation margin, the formula Correct the active power command value of the corresponding CSP plant;

[0237] Where, is the sum of the peak margin correction values ​​of each CSP station, Ncsp is the number of CSP plants, ΔP PV_dadj The power value of the part where the sum of the ultra-short-term predicted power of the photovoltaic power station is lower than the sum of the active power command values, ΔP PV_dadj =P PV_plan -P spre , Pspre is the sum of the ultra-short-term power prediction values ​​of the photovoltaic power station, P PV_i_spre is the ultra-short-term predicted power value of the i-th photovoltaic power station, Npv is the number of photovoltaic power stations, is the peak regulation margin correction value of the e-th CSP power station, P CSP_e_E is the rated active power of the e-th CSP station, P CSP_e_plan is the active power command value of the e-th CSP station, P PV_i_plan is the active power command value of the i-th photovoltaic power station, P PV_i_nplan is the corrected active power command value of the i-th photovoltaic power station, P CSP_e_nplan is the corrected active power command value of the e-th CSP plant.

[0238] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0239] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0240] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0241] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0242] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A method for coordinated control of active power of photovoltaic-solar thermal combined power generation, characterized in that: The method comprises: Determine the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station according to the active power required by the load; Based on the ultra-short-term predicted power of the photovoltaic power station and the power up / down peak regulation margin correction value of the solar thermal power station, the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station are corrected; Controlling the active power output of the photovoltaic power station to be the corrected active power command value of the photovoltaic power station, and the active power output of the solar thermal power station to be the corrected active power command value of the solar thermal power station; The determining of the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station according to the active power required by the load includes: Obtain the total amount of active power reduction of the photovoltaic-thermal combined power station based on the active power required by the load; Compare the total active power reduction of the photovoltaic-solar thermal power station with the sum of the power reduction peak margins of each solar thermal power station, and determine the active power command value of each photovoltaic power station and each solar thermal power station based on the comparison results; The comparing the total amount of active power reduction of the photovoltaic-solar thermal power station and the sum of the power reduction peak margins of each solar thermal power station, and determining the active power command values ​​of each photovoltaic power station and each solar thermal power station according to the comparison result, includes: When the total amount of active power reduction of the photovoltaic power station and the solar thermal power station is less than or equal to the sum of the power peak reduction margins of each solar thermal power station, the active power command value P of the e-th solar thermal power station is determined according to the following formula: CSP_e_plan : The active power command value P of the i-th photovoltaic power station is determined by the following formula: PV_i_plan : P PV_i_plan =P PV_i_pre in, is the peak margin reduction of the e-th CSP station, is the peak regulation margin of the e-th CSP power station, P CSP_e_pre is the recommended power of the e-th CSP plant, is the sum of the peak regulation margins of each CSP station. P PV_i_pre Short-term power forecast for the i-th photovoltaic power station; When the total amount of active power reduction of the photovoltaic power station and the solar thermal power station is greater than the sum of the power peak reduction margins of each solar thermal power station, the active power command value P of the e-th solar thermal power station is determined according to the following formula: CSP_e_plan : The active power command value P of the i-th photovoltaic power station is determined by the following formula: PV_i_plan : P PV_i_plan =P PV_i_pre -ΔP PV_i_plan in, is the peak margin reduction of the e-th CSP station, is the peak regulation margin of the e-th CSP power station, ΔP PV_i_plan is the active power reduction of the i-th photovoltaic power station, ΔP PV_plan is the total amount of power required to be reduced by the photovoltaic power station, P PV_i_pre is the short-term predicted power of the i-th photovoltaic power station, P CSP_e_pre is the recommended power of the e-th CSP plant.

2. The method according to claim 1, wherein The step of obtaining the total amount of active power reduction of the photovoltaic-solar thermal power station according to the active power required by the load includes: When P Lmax ≥P PV_pre +P CSP_pre When the total active power of the photovoltaic-thermal power station is reduced by ΔP D_plan =0; When P Lmax <P PV_pre +P CSP_pre When the total active power reduction ΔP of the photovoltaic-thermal combined power station is determined by the following formula D_plan : ΔP D_plan =P PV_pre +P CSP_pre -P Lmax Among them, P Lmax is the active power required by the load, P PV_pre is the sum of the short-term predicted power of each photovoltaic power station, P PV_i_pre is the short-term predicted power of the i-th photovoltaic power station, N PV is the number of photovoltaic power stations, P CSP_pre is the sum of the recommended powers of all CSP plants, N CSP is the number of CSP plants, P CSP_e_pre is the recommended power of the e-th CSP plant.

3. The method according to claim 1, wherein Before correcting the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station based on the ultra-short-term predicted power of the photovoltaic power station and the power up / down peak regulation margin correction value of the solar thermal power station, the method includes: Determine the peak regulation margin correction value of the e-th CSP power station by the following formula: Determine the peak margin correction value of the power increase of the e-th CSP station as follows: In the above formula, is the power peak margin reduction of the e-th CSP station, is the peak regulation margin of the e-th CSP power station, The peak margin for the power increase of the e-th CSP station.

4. The method according to claim 1, wherein The method of correcting the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station based on the ultra-short-term predicted power of the photovoltaic power station and the power up / down peak regulation margin correction value of the solar thermal power station includes: Determine the relationship between the ultra-short-term power forecast value of each photovoltaic power station and the active power command value of each photovoltaic power station; When the ultra-short-term power forecast values ​​of each photovoltaic power station are greater than the active power command values ​​of each photovoltaic power station, the active power command values ​​of each photovoltaic power station and each solar thermal power station are corrected according to the peak regulation margin correction value of the solar thermal power station; When the ultra-short-term power forecast values ​​of each photovoltaic power station are all less than the active power command values ​​of each photovoltaic power station, the active power command values ​​of each photovoltaic power station and each solar thermal power station are corrected according to the power peak regulation margin correction value of the solar thermal power station; When the ultra-short-term power prediction value of each photovoltaic power station is equal to the active power command value of each photovoltaic power station, the active power command value of each photovoltaic power station and the active power command value of each solar thermal power station remain unchanged.

5. The method according to claim 4, wherein The correcting of the active power command values ​​of each photovoltaic power station and the active power command value of the solar thermal power station according to the peak regulation margin correction value of the solar thermal power station power includes: When the power of each CSP station is reduced, the sum of the peak margin correction values hour: Then the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station remain unchanged; When the power of each CSP station is reduced, the sum of the peak margin correction values and hour: Then through the formula Correct the active power command value of each photovoltaic power station: For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged; For a CSP station with power peak regulation margin, the formula P CSP_e_nplan =P CSP_e_X Correct the active power command value of the corresponding CSP plant: When the power of each CSP station is reduced, the sum of the peak margin correction values and hour: Then, through the formula P PV_i_nplan =P PV_i_spre Correct the active power command value of each photovoltaic power station: For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged; For a CSP plant with power peak regulation margin, the formula Correct the active power command value of the corresponding CSP plant; Where, is the peak regulation margin correction value of the e-th CSP power station, Ncsp is the number of CSP stations, ΔP PV_uadj The power of the part where the sum of the ultra-short-term predicted power of the photovoltaic power station exceeds the sum of the active power command values, ΔP PV_uadj =P spre -P PV_plan , P PV_i_nplan is the corrected active power command value of the i-th photovoltaic power station, P CSP_e_nplan is the corrected active power command value of the e-th CSP station, P PV_plan is the sum of the active power command values ​​of the photovoltaic power station, P spre is the sum of the ultra-short-term power prediction values ​​of the photovoltaic power station, P PV_i_spre is the ultra-short-term predicted power value of the i-th photovoltaic power station, Npv is the number of photovoltaic power stations, P PV_i_plan is the active power command value of the i-th photovoltaic power station, P CSP_e_plan is the active power command value of the e-th CSP station, P CSP_e_X is the minimum technical output value of the e-th CSP station.

6. The method according to claim 4, wherein The step of correcting the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station according to the peak regulation margin correction value of the solar thermal power station includes: when hour: Then, through the formula P PV_i_nplan =P PV_i_spre Correct the active power command value of each photovoltaic power station: For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged; For a CSP station with power peak regulation margin, the formula P CSP_e_nplan =P CSP_e_E Correct the active power command value of the corresponding CSP plant: when hour: Then, through the formula P PV_i_nplan =P PV_i_spre Correct the active power command value of each photovoltaic power station: For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged; For a CSP station with power peak regulation margin, the formula Correct the active power command value of the corresponding CSP plant; Where, is the sum of the peak margin correction values ​​of each CSP station, Ncsp is the number of CSP plants, ΔP PV_dadj The power value of the part where the sum of the ultra-short-term predicted power of the photovoltaic power station is lower than the sum of the active power command values, ΔP PV_dadj =P PV_plan -P spre , P spre is the sum of the ultra-short-term power prediction values ​​of the photovoltaic power station, P PV_i_spre is the ultra-short-term predicted power value of the i-th photovoltaic power station, Npv is the number of photovoltaic power stations, is the peak regulation margin correction value of the e-th CSP power station, P CSP_e_E is the rated active power of the e-th CSP station, P CSP_e_plan is the active power command value of the e-th CSP station, P PV_i_plan is the active power command value of the i-th photovoltaic power station, P PV_i_nplan is the corrected active power command value of the i-th photovoltaic power station, P CSP_e_nplan is the corrected active power command value of the e-th CSP plant.

7. A photovoltaic-solar thermal combined power generation active power coordination control device, characterized in that: The device comprises: A first determining module is used to determine the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station according to the active power required by the load; A correction module is used to correct the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station based on the ultra-short-term predicted power of the photovoltaic power station and the power up / down peak regulation margin correction value of the solar thermal power station; A control module, configured to control the active power output of the photovoltaic power station to be the corrected active power command value of the photovoltaic power station, and the active power output of the solar thermal power station to be the corrected active power command value of the solar thermal power station; The first determining module includes: An acquisition unit, configured to acquire a total amount of active power reduction of the photovoltaic-solar thermal power station according to the active power required by the load; a determination unit, configured to compare the total amount of active power reduction of the photovoltaic-solar thermal power station with the sum of the power reduction peak margins of each solar thermal power station, and determine the active power command values ​​of each photovoltaic power station and each solar thermal power station based on the comparison result; The determining unit is configured to: When the total amount of active power reduction of the photovoltaic power station and the solar thermal power station is less than or equal to the sum of the power peak reduction margins of each solar thermal power station, the active power command value P of the e-th solar thermal power station is determined according to the following formula: CSP_e_plan : The active power command value P of the i-th photovoltaic power station is determined by the following formula: PV_i_plan : P PV_i_plan =P PV_i_pre in, is the peak margin reduction of the e-th CSP station, is the peak regulation margin of the e-th CSP power station, P CSP_e_pre is the recommended power of the e-th CSP plant, is the sum of the peak regulation margins of each CSP station. P PV_i_pre Short-term power forecast for the i-th photovoltaic power station; When the total amount of active power reduction of the photovoltaic power station and the solar thermal power station is greater than the sum of the power peak reduction margins of each solar thermal power station, the active power command value P of the e-th solar thermal power station is determined according to the following formula: CSP_e_plan : The active power command value P of the i-th photovoltaic power station is determined by the following formula: PV_i_plan : P PV_i_plan =P PV_i_pre -ΔP PV_i_plan in, is the peak margin reduction of the e-th CSP station, is the peak regulation margin of the e-th CSP power station, ΔP PV_i_plan is the active power reduction of the i-th photovoltaic power station, ΔP PV_plan is the total amount of power required to be reduced by the photovoltaic power station, P PV_i_pre is the short-term predicted power of the i-th photovoltaic power station, P CSP_e_pre is the recommended power of the e-th CSP plant.

8. The device according to claim 7, wherein The acquisition unit is configured to: When P Lmax ≥P PV_pre +P CSP_pre When the total active power of the photovoltaic-thermal power station is reduced by ΔP D_plan =0; When P Lmax <P PV_pre +P CSP_pre When the total active power reduction ΔP of the photovoltaic-thermal combined power station is determined by the following formula D_plan : ΔP D_plan =P PV_pre +P CSP_pre -P Lmax Among them, P Lmax is the active power required by the load, P PV_pre is the sum of the short-term predicted power of each photovoltaic power station, P PV_i_pre is the short-term predicted power of the i-th photovoltaic power station, N PV is the number of photovoltaic power stations, P CSP_pre is the sum of the recommended powers of all CSP plants, N CSP is the number of CSP plants, P CSP_e_pre is the recommended power of the e-th CSP plant.

9. The device according to claim 7, wherein The apparatus further includes: a second determining module, configured to: Determine the peak regulation margin correction value of the e-th CSP power station by the following formula: Determine the peak margin correction value of the power increase of the e-th CSP station as follows: In the above formula, is the power peak margin reduction of the e-th CSP station, is the peak regulation margin of the e-th CSP power station, The peak margin for the power increase of the e-th CSP station.

10. The device according to claim 7, wherein The correction module is used to: A judgment unit, used to judge the relationship between the ultra-short-term power prediction value of each photovoltaic power station and the active power command value of each photovoltaic power station; When the ultra-short-term power forecast values ​​of each photovoltaic power station are greater than the active power command values ​​of each photovoltaic power station, the active power command values ​​of each photovoltaic power station and each solar thermal power station are corrected according to the peak regulation margin correction value of the solar thermal power station; When the ultra-short-term power forecast values ​​of each photovoltaic power station are all less than the active power command values ​​of each photovoltaic power station, the active power command values ​​of each photovoltaic power station and each solar thermal power station are corrected according to the power peak regulation margin correction value of the solar thermal power station; When the ultra-short-term power prediction value of each photovoltaic power station is equal to the active power command value of each photovoltaic power station, the active power command value of each photovoltaic power station and the active power command value of each solar thermal power station remain unchanged.

11. The device according to claim 10, wherein The correcting of the active power command values ​​of each photovoltaic power station and the active power command value of the solar thermal power station according to the peak regulation margin correction value of the solar thermal power station power includes: When the power of each CSP station is reduced, the sum of the peak margin correction values hour: Then the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station remain unchanged; When the power of each CSP station is reduced, the sum of the peak margin correction values and hour: Then through the formula Correct the active power command value of each photovoltaic power station: For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged; For a CSP station with power peak regulation margin, the formula P CSP_e_nplan =P CSP_e_X Correct the active power command value of the corresponding CSP plant: When the power of each CSP station is reduced, the sum of the peak margin correction values and hour: Then, through the formula P PV_i_nplan =P PV_i_spre Correct the active power command value of each photovoltaic power station: For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged; For a CSP plant with power peak regulation margin, the formula Correct the active power command value of the corresponding CSP plant; Where, is the peak regulation margin correction value of the e-th CSP power station, Ncsp is the number of CSP stations, ΔP PV_uadj The power of the part where the sum of the ultra-short-term predicted power of the photovoltaic power station exceeds the sum of the active power command values, ΔP PV_uadj =P spre -P PV_plan , P PV_i_nplan is the corrected active power command value of the i-th photovoltaic power station, P CSP_e_nplan is the corrected active power command value of the e-th CSP station, P PV_plan is the sum of the active power command values ​​of the photovoltaic power station, P spre is the sum of the ultra-short-term power prediction values ​​of the photovoltaic power station, P PV_i_spre is the ultra-short-term predicted power value of the i-th photovoltaic power station, Npv is the number of photovoltaic power stations, P PV_i_plan is the active power command value of the i-th photovoltaic power station, P CSP_e_plan is the active power command value of the e-th CSP station, P CSP_e_X is the minimum technical output value of the e-th CSP station.

12. The device according to claim 10, wherein The step of correcting the active power command value of the photovoltaic power station and the active power command value of the solar thermal power station according to the peak regulation margin correction value of the solar thermal power station includes: when hour: Then, through the formula P PV_i_nplan =P PV_i_spre Correct the active power command value of each photovoltaic power station: For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged; For a CSP station with power peak regulation margin, the formula P CSP_e_nplan =P CSP_e_E Correct the active power command value of the corresponding CSP plant: when hour: Then, through the formula P PV_i_nplan =P PV_i_spre Correct the active power command value of each photovoltaic power station: For CSP plants that do not have power peak regulation margin, the active power command value of the corresponding CSP plant remains unchanged; For a CSP station with power peak regulation margin, the formula Correct the active power command value of the corresponding CSP plant; Where, is the sum of the peak margin correction values ​​of each CSP station, Ncsp is the number of CSP plants, ΔP PV_dadj The power value of the part where the sum of the ultra-short-term predicted power of the photovoltaic power station is lower than the sum of the active power command values, ΔP PV_dadj =P PV_plan -P spre , P spre is the sum of the ultra-short-term power prediction values ​​of the photovoltaic power station, P PV_i_spre is the ultra-short-term predicted power value of the i-th photovoltaic power station, Npv is the number of photovoltaic power stations, is the peak regulation margin correction value of the e-th CSP power station, P CSP_e_E is the rated active power of the e-th CSP station, P CSP_e_plan is the active power command value of the e-th CSP station, P PV_i_plan is the active power command value of the i-th photovoltaic power station, P PV_i_nplan is the corrected active power command value of the i-th photovoltaic power station, P CSP_e_nplan is the corrected active power command value of the e-th CSP plant.

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