Coal-fired unit peak shaving control method and device, storage medium and electronic equipment

Abstract

The application relates to a coal power unit peak regulation control method and device, a storage medium and an electronic equipment. A specific scheme is as follows: a target load reduction value is obtained in response to receiving a load reduction instruction; a current running coal power unit is grouped according to a preset rule to obtain a plurality of groups; the plurality of groups are combined to obtain a plurality of combinations; for each combination, the groups in the combination are taken as target peak regulation groups, and total coal consumption is determined based on target peak regulation group related data and the target load reduction value; the minimum total coal consumption is determined based on the total coal consumption of each of the plurality of combinations; the groups corresponding to the minimum total coal consumption are determined as the target peak regulation groups; and the coal power units in the target peak regulation groups are controlled to perform peak regulation based on the target load reduction value. The application reduces the coal consumption of the coal power unit and improves energy saving benefits.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of coal-fired generating units participating in auxiliary peak regulation of a power grid, and in particular to a coal-fired generating unit peak regulation control method and device, a storage medium, and an electronic device. BACKGROUND

[0002] In related technologies, the larger the capacity of a coal-fired generating unit in a grid is, the larger the peak regulation capacity is, but the load rate of the unit is reduced, and large-capacity units cannot play the advantages of high parameters in deep peak regulation, resulting in energy waste and increased carbon emissions. Therefore, while implementing coal-fired three-modification linkage to achieve energy saving and carbon reduction of units, it is necessary to optimize power grid dispatching management to achieve energy saving and carbon reduction of the entire system. SUMMARY

[0003] To this end, the present application provides a coal-fired generating unit peak regulation control method and device, a storage medium, and an electronic device. The technical solution of the present application is as follows:

[0004] According to a first aspect of an embodiment of the present application, a coal-fired generating unit peak regulation control method is provided, and the method comprises:

[0005] In response to receiving a load reduction instruction, a target load reduction value is obtained;

[0006] The currently operating coal-fired generating units are grouped according to a preset rule to obtain a plurality of groups;

[0007] The plurality of groups are combined to obtain a plurality of combinations; wherein each combination includes at least one group;

[0008] For each combination, the groups in the combination are taken as target peak regulation groups, and a total coal consumption is determined based on the target peak regulation group related data and the target load reduction value;

[0009] Based on the total coal consumption of each of the plurality of combinations, a minimum total coal consumption is determined;

[0010] The group corresponding to the minimum coal consumption is determined as a target peak regulation group;

[0011] Based on the target load reduction value, the coal-fired generating units in the target peak regulation group are controlled to perform peak regulation.

[0012] According to an embodiment of the present application, the grouping of the currently operating coal-fired generating units according to a preset rule to obtain a plurality of groups comprises:

[0013] The installed capacity and the initial steam turbine admission parameter of each of the plurality of currently operating coal-fired generating units are respectively obtained;

[0014] A preset group category and the installed capacity threshold and the initial steam turbine admission parameter corresponding to each preset group category are obtained;

[0015] based on the current operating coal-fired power unit of each installed capacity and steam turbine initial parameters, the current operating coal-fired power unit is divided into the corresponding group to obtain a plurality of groups; wherein each group includes at least one coal-fired power unit.

[0016] According to an embodiment of the present application, the plurality of groups are combined to obtain a plurality of combinations, comprising:

[0017] based on the target load reduction value, respectively determine the first target power generation load rate of each group; wherein the first target power generation load rate is the target power generation load rate under the condition of each group alone load reduction to the target load reduction value;

[0018] in response to the first target power generation load rate meets the first preset condition, the group corresponding to the first target power generation load rate is determined as one of the combinations;

[0019] in response to the first target power generation load rate does not meet the first preset condition, the group corresponding to the first target power generation load rate is determined as the first peak shaving group;

[0020] for each first peak shaving group, the first target power generation load rate of the first peak shaving group is adjusted to a preset load rate, and the second target power load rate of each group other than the first peak shaving group is determined based on the preset load rate; wherein the second target power load rate is the target power load rate under the condition of the first peak shaving group and the group corresponding to the second target power load rate together load reduction;

[0021] in response to the second target power load rate meets the second preset condition, the group corresponding to the second target power load rate is determined as the second peak shaving group, and the first peak shaving group and the second peak shaving group are divided into one of the combinations;

[0022] in response to the second target power load rate does not meet the second preset condition, the first peak shaving group and the group corresponding to the second target power load rate are determined as a new first peak shaving group, and the step of adjusting the first target power generation load rate of the first peak shaving group to a preset load rate and determining the second target power load rate of each group other than the first peak shaving group is re-executed.

[0023] According to an embodiment of the present application, the first target power generation load rate of the first peak shaving group is adjusted to a preset load rate, and the second target power load rate of each group other than the first peak shaving group is determined based on the preset load rate, comprising:

[0024] For each first peak regulation group, the first target power generation load rate of the first peak regulation group is adjusted to a preset load rate; wherein the preset load rate is the minimum load rate of the coal-fired generating unit in the first peak regulation group;

[0025] obtaining a current power generation load rate;

[0026] determining a second target power load rate of each group other than the first peak regulation group based on the preset load rate, the current power generation load rate, and the number of coal-fired generating units in each group.

[0027] According to an embodiment of the present application, the determination of the total coal consumption based on the target peak regulation group related data and the target load reduction value comprises:

[0028] obtaining a preset correlation formula corresponding to each target peak regulation group based on the at least one target peak regulation group; wherein the preset correlation formula is a correlation formula between power generation coal consumption and load rate;

[0029] determining the total coal consumption of each combination based on the preset correlation formula of the at least one target peak regulation group, the first target power load rate, the second target power load rate, and the number of coal-fired generating units in each group.

[0030] According to an embodiment of the present application, the determination of the first target power generation load rate of each group based on the target load reduction value comprises:

[0031] obtaining a current total load value of coal-fired generating units;

[0032] determining a current power generation load rate based on the current total load value of coal-fired generating units and the number of coal-fired generating units in each group;

[0033] determining the first target power generation load rate of each group based on the target load reduction value, the current power generation load rate, and the number of coal-fired generating units in each group.

[0034] According to an embodiment of the present application, the combination of a plurality of groups to obtain a plurality of combinations comprises:

[0035] randomly combining a plurality of groups to obtain all combination modes;

[0036] determining groups belonging to the same combination mode as one combination to obtain a plurality of combinations.

[0037] According to a second aspect of an embodiment of the present application, a coal-fired generating unit peak regulation control device is provided, and the device comprises:

[0038] an obtaining module, configured to obtain a target load reduction value in response to receiving a load reduction instruction;

[0039] a grouping module, configured to group the current operating coal-fired generating units according to a preset rule to obtain a plurality of groups;

[0040] a combination module, configured to combine the plurality of groups to obtain a plurality of combinations, wherein each of the combinations comprises at least one of the groups;

[0041] a first determination module, configured to, for each of the combinations, take the groups in the combination as target peak-regulation groups, and determine a total coal consumption based on the target peak-regulation group related data and the target load reduction value;

[0042] a second determination module, configured to determine a minimum total coal consumption based on the total coal consumption of each of the combinations;

[0043] a third determination module, configured to determine the groups corresponding to the minimum total coal consumption as target peak-regulation groups;

[0044] a control module, configured to control the coal-fired generating units in the target peak-regulation groups to perform peak regulation based on the target load reduction value.

[0045] According to an embodiment of the present application, the grouping module comprises:

[0046] a first acquisition sub-module, configured to respectively acquire the installed capacity and the initial steam turbine admission parameter of each of the current operating coal-fired generating units;

[0047] a second acquisition sub-module, configured to acquire a preset group category, and the installed capacity threshold and the initial steam turbine admission parameter corresponding to each of the preset group categories;

[0048] a grouping sub-module, configured to divide the current operating coal-fired generating units into groups based on the installed capacity and the initial steam turbine admission parameter of each of the current operating coal-fired generating units to obtain a plurality of groups, wherein each of the groups comprises at least one coal-fired generating unit.

[0049] According to an embodiment of the present application, the combination module comprises:

[0050] a first determination sub-module, configured to respectively determine a first target power generation load rate of each group based on the target load reduction value, wherein the first target power generation load rate is a target power generation load rate under the condition that each group is individually reduced to the target load reduction value;

[0051] a first combination sub-module, configured to, in response to the first target power generation load rate satisfying a first preset condition, determine the group corresponding to the first target power generation load rate as one of the combinations;

[0052] a second determining submodule, configured to determine, in response to the first target generation load rate not satisfying the first preset condition, a group corresponding to the first target generation load rate as a first peak-regulation group;

[0053] a third determining submodule, configured to adjust, for each first peak-regulation group, a first target generation load rate of the first peak-regulation group to a preset load rate, and determine, based on the preset load rate, a second target electric load rate of each group other than the first peak-regulation group; wherein the second target electric load rate is a target electric load rate under a condition that the first peak-regulation group and the group corresponding to the second target electric load rate jointly reduce load;

[0054] a dividing submodule, configured to, in response to the second target electric load rate satisfying a second preset condition, determine a group corresponding to the second target electric load rate as a second peak-regulation group, and divide the first peak-regulation group and the second peak-regulation group into one combination;

[0055] a fourth determining submodule, configured to, in response to the second target electric load rate not satisfying the second preset condition, determine the first peak-regulation group and the group corresponding to the second target electric load rate as a new first peak-regulation group, and re-perform the step of adjusting, for each first peak-regulation group, a first target generation load rate of the first peak-regulation group to a preset load rate, and determining a second target electric load rate of each group other than the first peak-regulation group.

[0056] According to an embodiment of the present application, the third determining submodule is specifically configured to:

[0057] adjust, for each first peak-regulation group, a first target generation load rate of the first peak-regulation group to a preset load rate; wherein the preset load rate is a minimum load rate of a coal-fired generating unit in the first peak-regulation group;

[0058] obtain a current generation load rate;

[0059] determine, based on the preset load rate, the current generation load rate, and a number of coal-fired generating units in each group, a second target electric load rate of each group other than the first peak-regulation group.

[0060] According to an embodiment of the present application, the first determining module comprises:

[0061] a third obtaining submodule, configured to obtain, based on the at least one target peak-regulation group, a preset correlation formula corresponding to each target peak-regulation group; wherein the preset correlation formula is a correlation formula between generation coal consumption and load rate;

[0062] A fifth determining sub-module is configured to determine total coal consumption of each of the combinations based on a preset correlation formula of the at least one target peak-shaving group, the first target power load rate, the second target power load rate, and the number of coal power units in each of the groups.

[0063] According to an embodiment of the present application, the first determining sub-module is specifically configured to:

[0064] obtain a current total load value of the coal power units;

[0065] determine a current power generation load rate based on the current total load value of the coal power units and the number of coal power units in each of the groups;

[0066] determine a first target power generation load rate of each of the groups based on the target load reduction value, the current power generation load rate, and the number of coal power units in each of the groups.

[0067] According to an embodiment of the present application, the combination module comprises:

[0068] A second combination sub-module is configured to randomly combine the groups to obtain all combination modes.

[0069] A sixth determining sub-module is configured to determine groups belonging to the same combination mode as one combination to obtain the combinations.

[0070] According to a third aspect of an embodiment of the present application, an electronic device is provided, comprising:

[0071] at least one processor; and

[0072] a memory in communication with the at least one processor; wherein

[0073] the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method of any one of the first aspect.

[0074] According to a fourth aspect of an embodiment of the present application, a non-transitory computer-readable storage medium storing computer instructions is provided, wherein the computer instructions are used to enable the computer to perform the method of any one of the first aspect.

[0075] The technical solutions provided by the embodiments of the present application at least bring the following beneficial effects:

[0076] By grouping the coal power units, combining the groups, calculating the total coal consumption under different combinations of participating in peak shaving, selecting the combination with the smallest total coal consumption for peak shaving, thereby reducing the coal consumption of the coal power unit, strengthening the rationality of energy-saving power generation dispatching, and improving energy-saving benefits and carbon reduction benefits.

[0077] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0078] The drawings incorporated into the specification and forming part of the specification, show embodiments consistent with the present application, and together with the specification, serve to explain the principles of the present application, and do not constitute undue limitations on the present application.

[0079] Figure 1 A flowchart of a coal power unit peak shaving control method proposed in an embodiment of the present application;

[0080] Figure 2 A flowchart of another coal power unit peak shaving control method proposed in an embodiment of the present application;

[0081] Figure 3 A flowchart of yet another coal power unit peak shaving control method proposed in an embodiment of the present application;

[0082] Figure 4 A flowchart of still another coal power unit peak shaving control method proposed in an embodiment of the present application;

[0083] Figure 5 A structure block diagram of a coal power unit peak shaving control device proposed in an embodiment of the present application;

[0084] Figure 6 A block diagram of an electronic device proposed in an embodiment of the present application. DETAILED DESCRIPTION

[0085] In order for ordinary people in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings.

[0086] It should be noted that the terms "first", "second", and the like in the description and in the claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0087] It should be noted that in the related art, the larger the grid capacity of the coal-fired unit is, the larger the peak regulation capacity is, but the unit load rate decreases, and the deep peak regulation of large-capacity units cannot play the advantage of high parameters and high efficiency, resulting in energy waste and increase in carbon emissions. Therefore, while implementing coal-fired three-modification linkage to realize unit energy saving and carbon reduction, it is necessary to optimize power grid dispatching management to realize energy saving and carbon reduction of the entire system. The document "Wang Shudong, Lv Weizhi. Value quantification evaluation of coal-fired units under deep peak regulation situation [J]". Power Engineering, September 2021. Selects 300MW subcritical, 600MW subcritical and 600MW supercritical units as research objects, analyzes the coal consumption characteristics and power supply cost of different types of coal-fired units under deep peak regulation, and establishes a coal-fired unit dispatching model considering environmental benefits. The economic value and environmental benefits of coal-fired units under deep peak regulation are quantified by model calculation. Conclusion: In the process of formulating the peak regulation auxiliary service market policy, the capacity and steam parameter characteristics of coal-fired units should be fully considered for classification management and further optimization of peak regulation grading. For supercritical and ultra-supercritical units with high parameters and high efficiency, the unit utilization level should be improved; for subcritical units with low parameters, the flexibility potential should be fully tapped to improve the flexibility of the power grid. However, there is another view that AGC rate has no clear correlation with coal-fired unit capacity, and large-capacity units such as 600MW and 1000MW units have faster peak regulation rate and larger peak regulation capacity due to their large capacity, so large-capacity units such as 600MW and 1000MW units should be given priority to participate in flexible peak regulation of the power grid. Both of the above two views do not give a peak regulation mode selection method based on actual data, and both have certain irrationality, so an optimal strategy and mode determination method for coal-fired units participating in auxiliary peak regulation service of the power grid is needed.

[0088] Based on the above problems, the coal-fired unit peak shaving control method, device, storage medium and electronic equipment are provided, which can realize grouping of coal-fired units, combination of the groups, calculation of total coal consumption under different combination participating in peak shaving, selection of the combination with the minimum total coal consumption for peak shaving, thereby reducing the coal consumption of coal-fired units, strengthening the rationality of energy-saving power generation dispatching, and improving energy-saving benefits and carbon reduction benefits.

[0089] Figure 1 A flowchart of a coal-fired unit peak shaving control method proposed in an embodiment of the present application.

[0090] As shown in Figure 1 , the coal-fired unit peak shaving control method comprises:

[0091] Step 101, in response to receiving a load reduction instruction, obtaining a target load reduction value.

[0092] It should be noted that the target power supply area is supplied by new energy power generation and coal-fired unit power generation. Since the cost of new energy power generation is lower and more environmentally friendly, if the new energy power generation increases under the condition that the current total demand for electricity load of the target power supply area does not change, the coal-fired unit power generation can be reduced, thereby reducing the cost and saving energy.

[0093] For example, the above-mentioned new energy can be wind, light and other energy. The total electricity load E0 currently required by the target power supply area, the new energy such as wind and light E 0n , and the power generation load of the coal-fired unit E0-E 0n . The new energy such as wind and light increases E 0n +△E, and the electricity load in the target power supply area does not change, so the power generation load of the coal-fired unit is required to decrease△E based on E0-E 0n , and△E is the target load reduction value.

[0094] As an example of a possible implementation, in response to receiving a load reduction instruction, a target load reduction value is obtained.

[0095] Step 102, grouping the currently running coal-fired units according to a preset rule to obtain a plurality of groups.

[0096] It should be noted that there are multiple currently running coal-fired units. The above-mentioned preset rule can be a grouping rule prepared in advance according to the actual coal-fired unit operation condition.

[0097] As an example of a possible implementation, the currently running coal-fired units are grouped according to a preset rule, thereby obtaining a plurality of groups, and each group includes at least one currently running coal-fired unit.

[0098] Step 103, combining the plurality of groups to obtain a plurality of combinations.

[0099] In the embodiments of the present application, at least one group is included in each combination.

[0100] As an example of possible implementation, the plurality of groups are combined to obtain a plurality of combinations. Alternatively, random combination can be performed to obtain all combination cases; or the groups can be combined according to pre-set rules according to actual requirements.

[0101] In step 104, for each combination, the groups in the combination are taken as target peak regulation groups, and the total coal consumption is determined based on the related data of the target peak regulation groups and the target load reduction value.

[0102] It should be noted that the total coal consumption is the total coal consumption of all currently running coal-fired power plants.

[0103] As an example of possible implementation, for each combination, the groups in the combination are taken as target peak regulation groups, and the total coal consumption under the condition that the combination is taken as the target peak regulation group and other groups remain in the initial running state is calculated. The total coal consumption can be calculated based on the related data of the target peak regulation groups and the target load reduction value.

[0104] It can be understood that the related data of the target peak regulation groups can be obtained in advance.

[0105] In step 105, the minimum total coal consumption is determined based on the total coal consumption of each of the plurality of combinations.

[0106] As an example of possible implementation, the total coal consumption with the smallest value is selected from the total coal consumption of each of the plurality of combinations, and is determined as the minimum total coal consumption.

[0107] In step 106, the group corresponding to the minimum coal consumption is determined as the target peak regulation group.

[0108] In step 107, the coal-fired power plants in the target peak regulation group are controlled to perform peak regulation based on the target load reduction value.

[0109] As an example of possible implementation, the group corresponding to the minimum coal consumption is determined as the target peak regulation group, and the coal-fired power plants in the target peak regulation group are controlled to perform peak regulation based on the target load reduction value.

[0110] According to the coal power unit peak regulation control method provided in the embodiments of the present application, the target load reduction value is obtained in response to receiving the load reduction instruction; the current operating coal power unit is grouped according to a preset rule to obtain a plurality of groups; the plurality of groups are combined to obtain a plurality of combinations; wherein each combination includes at least one group; for each combination, the group in the combination is taken as a target peak regulation group, and the total coal consumption is determined based on the target peak regulation group related data and the target load reduction value; the minimum total coal consumption is determined based on the total coal consumption of each of the plurality of combinations; the group corresponding to the minimum total coal consumption is determined as the target peak regulation group; and the coal power unit in the target peak regulation group is controlled to perform peak regulation based on the target load reduction value. By grouping the coal power unit, combining the groups, calculating the total coal consumption under different combination conditions, and selecting the combination with the minimum total coal consumption to perform peak regulation, the coal consumption of the coal power unit is reduced, the rationality of energy-saving power generation dispatching is strengthened, and the energy-saving benefit and carbon reduction benefit are improved.

[0111] Figure 2 The flowchart of another coal power unit peak regulation control method provided in the embodiments of the present application.

[0112] As shown in Figure 2 , the coal power unit peak regulation control method includes:

[0113] Step 201, obtaining a target load reduction value in response to receiving a load reduction instruction.

[0114] It should be noted that in the embodiments of the present application, the above step 201 can be implemented by any one of the embodiments of the present application, and the embodiments of the present application do not limit this and will not be repeated.

[0115] Step 202, obtaining the installed capacity and the initial steam turbine admission parameter of each of the plurality of current operating coal power units.

[0116] Step 203, obtaining a preset group category, and an installed capacity threshold and a steam turbine admission initial parameter corresponding to each of the preset group categories.

[0117] It can be understood that the group category, and the installed capacity threshold and the steam turbine admission initial parameter corresponding to each of the preset group categories can be pre-set according to the installed capacity of the coal power unit and the initial steam turbine admission parameter.

[0118] As a possible example, the preset group category, and the installed capacity threshold and the steam turbine admission initial parameter corresponding to each of the preset group categories are obtained.

[0119] For example, N0 is the installed capacity of the coal power unit, and the following grouping is performed according to the installed capacity of the coal power unit and the initial steam turbine admission parameter:

[0120] (1)N0<300MW's coal power units, installed capacity of 225MW and below, mostly with high back pressure form to undertake residential heating, during the grid peak shaving; non-heating season mostly not running, so not included in the flexible peak load of the grid.

[0121] (2) Group 1: 300MW≤N0<500MW's coal power units, steam turbine initial parameters for subcritical (pressure range 16.7-18MPa, temperature range 538-540℃), 300MW subcritical, the number of M1.

[0122] (3) Group 2: 300MW≤N0<500MW's coal power units, steam turbine initial parameters for supercritical (pressure range 22.4-24.2MPa, temperature range 538-566℃), 300MW supercritical, the number of M2.

[0123] (4) Group 3: 500MW≤N0≤700MW's coal power units, steam turbine initial parameters for subcritical (pressure range 16.7-18MPa, temperature range 538-540℃), 600MW subcritical, the number of M3.

[0124] (5) Group 4: 500MW≤N0≤700MW's coal power units, steam turbine initial parameters for supercritical or ultra-supercritical (pressure>22.4MPa, temperature greater than 538℃), 600MW supercritical, the number of M4.

[0125] (6) Group 5: N0>700MW's coal power units steam turbine initial parameters for ultra-supercritical (pressure>24.2MPa, temperature greater than 566℃), 1000MW ultra-supercritical, the number of M5.

[0126] Step 204, based on the respective installed capacity of the currently running coal power units and the initial parameters of the steam turbine, the currently running coal power units are divided into the respective groups to obtain a plurality of groups.

[0127] In the embodiments of the present application, at least one coal power unit is included in each group.

[0128] As a possible example, according to the respective installed capacity of the currently running coal power units and the initial parameters of the steam turbine, the currently running coal power units are divided into the respective groups according to the respective installed capacity threshold and the initial parameters of the steam turbine corresponding to each preset group category, to obtain a plurality of groups.

[0129] Step 205, combining the plurality of groups to obtain a plurality of combinations; wherein at least one group is included in each combination.

[0130] It should be noted that in the embodiments of the present application, the above step 205 can be implemented by any of the embodiments of the present application respectively, and the embodiments of the present application do not limit this and will not be repeated here.

[0131] Step 206, for each combination, taking the groupings in the combination as target peak regulation groupings, determining the total coal consumption based on the target peak regulation grouping related data and the target load reduction value.

[0132] It should be noted that in the embodiments of the present application, the above step 206 can be implemented by any of the embodiments of the present application respectively, and the embodiments of the present application do not limit this and will not be repeated here.

[0133] Step 207, based on the total coal consumption of each of the plurality of combinations, determining the minimum total coal consumption.

[0134] It should be noted that in the embodiments of the present application, the above step 207 can be implemented by any of the embodiments of the present application respectively, and the embodiments of the present application do not limit this and will not be repeated here.

[0135] Step 208, determining the groupings corresponding to the minimum coal consumption as the target peak regulation groupings.

[0136] It should be noted that in the embodiments of the present application, the above step 208 can be implemented by any of the embodiments of the present application respectively, and the embodiments of the present application do not limit this and will not be repeated here.

[0137] Step 209, based on the target load reduction value, controlling the coal-fired generating units in the target peak regulation groupings to perform peak regulation.

[0138] It should be noted that in the embodiments of the present application, the above step 209 can be implemented by any of the embodiments of the present application respectively, and the embodiments of the present application do not limit this and will not be repeated here.

[0139] According to the coal-fired generating unit peak regulation control method, by respectively acquiring the installed capacity and the initial steam turbine admission parameter of each of the plurality of currently running coal-fired generating units, acquiring the preset grouping categories, and the installed capacity threshold and the initial steam turbine admission parameter corresponding to each of the preset grouping categories, based on the installed capacity and the initial steam turbine admission parameter of each of the currently running coal-fired generating units, the currently running coal-fired generating units are divided into the groupings to which they belong, to obtain a plurality of groupings, so that the currently running coal-fired generating units are grouped according to the installed capacity, thereby forming different load reduction control modes of different groupings.

[0140] Figure 3 A flowchart of another coal-fired generating unit peak regulation control method according to an embodiment of the present application.

[0141] As shown in Figure 3 , the coal-fired unit peak shaving control method comprises:

[0142] Step 301, in response to receiving a load reduction instruction, obtaining a target load reduction value.

[0143] It should be noted that in the embodiments of the present application, the above-mentioned step 301 can be realized by any one of the embodiments of the present application, and the embodiments of the present application do not limit this and will not be repeated.

[0144] Step 302, grouping the current running coal-fired units according to a preset rule to obtain a plurality of groups.

[0145] It should be noted that in the embodiments of the present application, the above-mentioned step 302 can be realized by any one of the embodiments of the present application, and the embodiments of the present application do not limit this and will not be repeated.

[0146] Step 303, based on the target load reduction value, determining a first target power generation load rate of each group respectively.

[0147] In the embodiments of the present application, the first target power generation load rate is the target power generation load rate under the condition of reducing the load of each group to the target load reduction value.

[0148] In some embodiments of the present application, step 303 comprises:

[0149] Step 3031, obtaining a current total load value of the coal-fired units.

[0150] Step 3032, based on the current total load value of the coal-fired units and the number of coal-fired units in each group, determining the current power generation load rate.

[0151] As an example of a possible implementation, it can be assumed that the power generation load of each coal-fired unit is according to an equal load rate, and the current power generation load rate x0 is calculated by the following formula:

[0152]

[0153] Wherein, M 1-o , M 2-o , M 3-o , M 4-o , M 5-o are the number of coal-fired units in the above-mentioned five groups respectively, E0 is the total power load currently required by the target power supply area, E 0n is the new energy power generation load such as wind and light.

[0154] Step 3033, based on the target load reduction value, the current power generation load rate and the number of coal-fired generating units in each group, respectively determine the first target power generation load rate of each group.

[0155] As an example of possible implementation, based on the target load reduction value, the current power generation load rate and the number of coal-fired generating units in each group, respectively determine the first target power generation load rate of each group. It should be noted that the first target power generation load rate is the target power generation load rate of each group under the condition of reducing load to the target load reduction value.

[0156] For example, taking one of the groups as an example, the first target power generation load rate x1 of the group is calculated by the following formula:

[0157]

[0158] Where x0 is the current power generation load rate, M 1-o is the number of coal-fired generating units in the group, and 300 is the rated power corresponding to the group.

[0159] Step 304, in response to the first target power generation load rate satisfying the first preset condition, determining the group corresponding to the first target power generation load rate as a combination.

[0160] As an example of possible implementation, the first preset condition can be a condition set in advance according to actual needs. The first preset condition can be that the first target power generation load rate is greater than or equal to the minimum load rate of the group corresponding to the first target power generation load rate.

[0161] It should be noted that each coal-fired generating unit has a safety threshold of load rate, and the target power generation load rate should fall within the safety threshold.

[0162] For example, the safety threshold of the load rate of the coal-fired generating unit is 0.3-1, and the first preset condition can be that the first target power generation load rate is greater than or equal to 0.3.

[0163] Step 304, in response to the first target power generation load rate not satisfying the first preset condition, determining the group corresponding to the first target power generation load rate as the first peak shaving group.

[0164] It can be understood that the first target power generation load rate does not satisfy the first preset condition, which means that if the group corresponding to the first target power generation load rate participates in peak shaving alone, the first target power generation load rate is lower than the safety threshold and cannot meet the peak shaving demand, so an additional group is needed to participate in peak shaving together with the above-mentioned group.

[0165] As an example of a possible implementation, for the group whose first target power generation load rate does not satisfy the first preset condition, the group whose first target power generation load rate does not satisfy the first preset condition is determined as a first peak shaving group respectively.

[0166] In step 305, for each first peak shaving group, the first target power generation load rate of the first peak shaving group is adjusted to a preset load rate, and a second target power load rate of each group other than the first peak shaving group is determined based on the preset load rate.

[0167] In the embodiments of the present application, the second target power load rate is a target power load rate under a load reduction condition of the first peak shaving group and the group corresponding to the second target power load rate.

[0168] In some embodiments of the present application, step 305 includes the following steps:

[0169] In step 3051, for each first peak shaving group, the first target power generation load rate of the first peak shaving group is adjusted to a preset load rate.

[0170] In the embodiments of the present application, the preset load rate is the minimum load rate of the coal-fired generating unit in the first peak shaving group.

[0171] It can be understood that if the first peak shaving group participates in peak shaving alone, the current first target power generation load rate cannot satisfy the first preset condition, and therefore, the minimum load rate of the coal-fired generating unit in the first peak shaving group needs to be assigned to the first target power generation load rate, so that the first peak shaving group can participate in peak shaving to the maximum extent under the premise of satisfying the safe operation condition.

[0172] In step 3052, a current power generation load rate is obtained.

[0173] In step 3053, based on the preset load rate, the current power generation load rate, and the number of coal-fired generating units in each group, a second target power load rate of each group other than the first peak shaving group is determined.

[0174] For example, taking one of the groups as the first peak shaving group, the second target power load rate of each group other than the first peak shaving group is calculated by the following formula:

[0175]

[0176]

[0177]

[0178]

[0179] wherein x 1-2 , x1-3 , x 1-4 , x 1-5 are respectively the second target electric load rate of each group other than the first peak regulation group.

[0180] Step 306, in response to the second target electric load rate satisfying the second preset condition, determining the group corresponding to the second target electric load rate as a second peak regulation group, and dividing the first peak regulation group and the second peak regulation group into one combination.

[0181] It should be noted that the second preset condition can be a condition pre-set according to actual needs. The second preset condition can be that the second target electric load rate is greater than or equal to the minimum load rate of the group corresponding to the second target electric load rate. Each coal-fired unit has a safety threshold of load rate, and the target electric load rate should fall within the safety threshold. For example, the safety threshold of the load rate of the coal-fired unit is 0.3-1, and the first preset condition can be that the first target electric load rate is greater than or equal to 0.3.

[0182] As a possible implementation example, in response to the second target electric load rate satisfying the second preset condition, it is illustrated that on the basis of the first peak regulation group participating in peak regulation, the group corresponding to the second target electric load rate can meet the peak regulation demand, the group corresponding to the second target electric load rate is determined as a second peak regulation group, and the first peak regulation group and the second peak regulation group are divided into one combination.

[0183] Step 307, in response to the second target electric load rate not satisfying the second preset condition, determining the first peak regulation group and the group corresponding to the second target electric load rate as a new first peak regulation group, and re-executing step 305.

[0184] As a possible implementation example, in response to the second target electric load rate not satisfying the second preset condition, it is illustrated that the first peak regulation group and the group corresponding to the second target electric load rate jointly participating in peak regulation also fails to meet the peak regulation demand, and the load value cannot be reduced to the target load value, so it is still necessary to continue to increase the number of groups participating in peak regulation, and therefore the first peak regulation group and the group corresponding to the second target electric load rate are determined as a new first peak regulation group, and step 305 is re-executed.

[0185] Step 308, obtaining a preset correlation formula corresponding to each target peak regulation group.

[0186] In the embodiments of the present application, the preset correlation formula is a correlation formula of power generation coal consumption and load rate.

[0187] As a possible implementation example, the coal-fired unit can achieve 30%No of minimum power output through self-reformation such as low-load stable combustion of the boiler, wide-load denitration reformation, optimization of the control system, etc.

[0188] Test conditions are divided according to the power load N: 30%N0, 40%N0, 50%N0, 60%N0, 80%N0, N0.

[0189] Adjust the operating conditions, measure and calculate the boiler thermal efficiency η b , the steam turbine heat consumption rate q (kJ / kWh), and the power generation coal consumption b (g / kWh) is calculated according to formula (1).

[0190]

[0191] In the formula, N is the coal power unit

[0192] B is the total coal consumption of the coal power unit, t / h. According to formula (2)

[0193]

[0194] In the formula,

[0195] h ms , h rh , h rc , h gs , h zj and h gj are the enthalpy values of the main steam at the outlet of the boiler superheater, the outlet and inlet steam of the boiler reheater, the inlet feed water of the boiler, and the desuperheating water of the boiler reheater and superheater, kJ / kg. They can be calculated by the measured values of pressure and temperature.

[0196] η b is the boiler thermal efficiency, see formula (3), which is obtained according to the special test on site.

[0197] η b = f1(D ms ) (3)

[0198] η p is the pipe efficiency, which is taken as a constant value of 0.99.

[0199] D ms , D rh , D rc , D gs , D zj and D gj are the flow rates of the main steam at the outlet of the boiler superheater, the outlet and inlet steam of the boiler reheater, the inlet feed water of the boiler, and the desuperheating water of the boiler reheater and superheater, t / h. The above parameters are not independent of each other, but follow certain correlations, see formula (4).

[0200] D ms = D gs + D gj

[0201] D rh = D rc + D zj

[0202] D rc = D ms - D ex1 - D ex2 - D leak (4)

[0203] In the formula, D ex1 , D ex2 and D leak are the high-pressure cylinder 1-stage extraction steam, 2-stage extraction steam and shaft seal external leakage, t / h. Among them, D ex1 and D ex2 can be calculated according to the high-pressure heater heat balance and material balance of the corresponding regenerative system of 1-stage extraction steam and 2-stage extraction steam, D leak is a binary function of the main steam flow D ms and the main steam pressure P ms , see formula (5), which is given by the steam turbine manufacturer.

[0204] D leak = f2(D ms , P ms ) (5)

[0205] According to the test results of the coal consumption of power generation of 6 discrete operating conditions, the correlation formula of the coal consumption of power generation of different classified coal-fired units with the load rate is fitted, as follows:

[0206]

[0207] Among them, x is the load rate of the coal-fired unit, the distribution range is 0.3-1, a, d, c are coefficients, which are obtained by fitting the results.

[0208] Step 309, based on the preset correlation formula of at least one target peak regulation group, the first target electric load rate, the second target electric load rate and the number of coal-fired units in each group, determine the total coal consumption of each combination.

[0209] As an example of a possible implementation, the total coal consumption of each combination can be calculated by the following formula:

[0210]

[0211]

[0212]

[0213]

[0214] wherein, ∑B 1-2 , ∑B 1-3 , ∑B 1-4 , ∑B 1-5 are total coal consumptions of the combinations respectively.

[0215] Step 310, determining a minimum total coal consumption based on the total coal consumptions of the combinations respectively.

[0216] It should be noted that in the embodiments of the present application, the above step 310 can be implemented by any one of the embodiments of the present application respectively, and the embodiments of the present application do not limit this and will not be repeated.

[0217] Step 311, determining the group corresponding to the minimum coal consumption as the target peak regulation group.

[0218] It should be noted that in the embodiments of the present application, the above step 311 can be implemented by any one of the embodiments of the present application respectively, and the embodiments of the present application do not limit this and will not be repeated.

[0219] Step 312, controlling the coal-fired generating units in the target peak regulation group to perform peak regulation based on the target load reduction value.

[0220] It should be noted that in the embodiments of the present application, the above step 312 can be implemented by any one of the embodiments of the present application respectively, and the embodiments of the present application do not limit this and will not be repeated.

[0221] According to the coal-fired generating unit peak regulation control method, by comparing the target power generation load rate with the preset requirement, new peak regulation groups are continuously added until the peak regulation demand can be met, and then a plurality of combinations containing different groups are obtained, the total coal consumptions of the combinations participating in peak regulation respectively are calculated, and then the combination with the minimum total coal consumption is determined, thereby improving the efficiency of the coal-fired generating unit peak regulation and the rationality of the coal-fired generating unit scheduling, and improving the energy saving benefit and carbon reduction benefit

[0222] Figure 4 is a flowchart of still another coal-fired generating unit peak regulation control method proposed in the embodiments of the present application.

[0223] As shown in Figure 4 , the coal-fired generating unit peak regulation control method comprises:

[0224] Step 401, in response to receiving a load reduction instruction, obtaining a target load reduction value.

[0225] It should be noted that the step 310 described above can be implemented by any of the embodiments of the present application in the embodiments of the present application, and the embodiments of the present application do not limit this, and will not be repeated here.

[0226] At step 402, the current operating coal-fired generating units are grouped according to a preset rule to obtain a plurality of groups.

[0227] It should be noted that the step 310 described above can be implemented by any of the embodiments of the present application in the embodiments of the present application, and the embodiments of the present application do not limit this, and will not be repeated here.

[0228] At step 403, the plurality of groups are randomly combined to obtain all combination modes.

[0229] At step 404, the groups belonging to the same combination mode are determined as one combination respectively to obtain a plurality of combinations.

[0230] In the embodiments of the present application, at least one group is included in each combination.

[0231] As an example of a possible implementation, the plurality of groups are randomly combined to obtain all possible combination modes, the groups belonging to the same combination mode are determined as one combination respectively to obtain all combinations, and the all combinations are screened to retain combinations satisfying a preset condition.

[0232] It should be noted that the specific screening method has been described in the embodiments shown in Figure 3 , i.e., the target power generation load rate of each group in the combination should be greater than or equal to the minimum power generation load rate, which will not be repeated here.

[0233] At step 405, for each combination, the groups in the combination are taken as target peak shaving groups, and the total coal consumption is determined based on target peak shaving group related data and target load shedding value.

[0234] It should be noted that the step 310 described above can be implemented by any of the embodiments of the present application in the embodiments of the present application, and the embodiments of the present application do not limit this, and will not be repeated here.

[0235] At step 406, the minimum total coal consumption is determined based on the total coal consumption of each of the plurality of combinations.

[0236] It should be noted that the step 310 described above can be implemented by any of the embodiments of the present application in the embodiments of the present application, and the embodiments of the present application do not limit this, and will not be repeated here.

[0237] At step 407, the group corresponding to the minimum coal consumption is determined as the target peak shaving group.

[0238] It should be noted that, in the embodiments of this application, the above step 310 can be implemented in any of the embodiments of this application. The embodiments of this application do not limit this, nor will they be described in detail.

[0239] Step 408: Based on the target load reduction value, control the coal-fired power units in the target peak-shaving group to perform peak shaving.

[0240] According to the coal-fired power unit peak-shaving control method of the embodiments of this application, in response to receiving a load reduction command, the target is obtained.

[0241] It should be noted that, in the embodiments of this application, the above step 310 can be implemented in any of the embodiments of this application. The embodiments of this application do not limit this, nor will they be described in detail.

[0242] According to the coal-fired power unit peak-shaving control method of this application embodiment, multiple groups are randomly combined to obtain all possible combinations; groups belonging to the same combination are determined as a single combination to obtain multiple combinations. By obtaining combinations that include all cases, the total coal consumption of each combination participating in peak-shaving is calculated individually, thereby determining the combination with the minimum total coal consumption, which improves energy-saving efficiency and carbon reduction benefits.

[0243] Figure 5 This is a flowchart of a peak-shaving control device for a coal-fired power unit proposed in the embodiments of this application.

[0244] like Figure 5 As shown, the peak-shaving control device for this coal-fired power unit includes:

[0245] The acquisition module 501 is used to acquire the target load reduction value in response to receiving a load reduction command;

[0246] Grouping module 502 is used to group the currently operating coal-fired power units according to preset rules to obtain multiple groups;

[0247] Combination module 503 is used to combine multiple groups to obtain multiple combinations; wherein each combination includes at least one group;

[0248] The first determining module 504 is used to determine the total coal consumption based on the relevant data of the target peak shaving group and the target load reduction value for each combination.

[0249] The second determining module 505 is used to determine the minimum total coal consumption based on the total coal consumption of each of the multiple combinations.

[0250] The third determining module 506 is used to determine the group corresponding to the minimum coal consumption as the target peak-shaving group;

[0251] The control module 507 is configured to control the coal power units in the target peak regulation group to perform peak regulation based on the target load reduction value.

[0252] In some embodiments of the present application, the grouping module 502 comprises:

[0253] The first obtaining sub-module is configured to respectively obtain the installed capacity and the initial steam turbine admission parameter of each of the plurality of currently running coal power units;

[0254] The second obtaining sub-module is configured to obtain a preset grouping category, and an installed capacity threshold and an initial steam turbine admission parameter corresponding to each of the preset grouping categories;

[0255] The grouping sub-module is configured to divide the currently running coal power units into groups based on the installed capacity and the initial steam turbine admission parameter of each of the currently running coal power units, to obtain a plurality of groups; wherein each group comprises at least one coal power unit.

[0256] In some embodiments of the present application, the combination module 503 comprises:

[0257] The first determining sub-module is configured to respectively determine a first target power generation load rate of each group based on the target load reduction value; wherein the first target power generation load rate is a target power generation load rate under the condition that each group is individually reduced to the target load reduction value;

[0258] The first combination sub-module is configured to determine a group corresponding to the first target power generation load rate as a combination in response to the first target power generation load rate satisfying a first preset condition;

[0259] The second determining sub-module is configured to determine a group corresponding to the first target power generation load rate as a first peak regulation group in response to the first target power generation load rate not satisfying the first preset condition;

[0260] The third determining sub-module is configured to adjust the first target power generation load rate of each first peak regulation group to a preset load rate, and determine a second target power generation load rate of each group other than the first peak regulation group based on the preset load rate; wherein the second target power generation load rate is a target power generation load rate under the condition that the first peak regulation group and the group corresponding to the second target power generation load rate are jointly reduced;

[0261] The division sub-module is configured to determine a group corresponding to the second target power generation load rate as a second peak regulation group, and divide the first peak regulation group and the second peak regulation group into a combination in response to the second target power generation load rate satisfying a second preset condition;

[0262] The fourth determining sub-module is configured to, in response to the second target electricity load rate not satisfying the second preset condition, determine the first peak regulation group and the group corresponding to the second target electricity load rate as a new first peak regulation group, and re-perform the steps of adjusting the first target power generation load rate of each first peak regulation group to a preset load rate, and determining the second target electricity load rate of each group other than the first peak regulation group.

[0263] In some embodiments of the present application, the third determining sub-module is specifically configured to:

[0264] adjusting the first target power generation load rate of each first peak regulation group to a preset load rate; and

[0265] obtaining a current power generation load rate;

[0266] determining the second target electricity load rate of each group other than the first peak regulation group based on the preset load rate, the current power generation load rate, and the number of coal-fired power generation units in each group.

[0267] In some embodiments of the present application, the first determining module 505 includes:

[0268] The third obtaining sub-module is configured to obtain a preset correlation formula corresponding to each target peak regulation group based on the at least one target peak regulation group; the preset correlation formula is a correlation formula between power generation coal consumption and a load rate.

[0269] The fifth determining sub-module is configured to determine the total coal consumption of each combination based on the preset correlation formula of the at least one target peak regulation group, the first target electricity load rate, the second target electricity load rate, and the number of coal-fired power generation units in each group.

[0270] In some embodiments of the present application, the first determining sub-module is specifically configured to:

[0271] obtaining a current total load value of coal-fired power generation units;

[0272] determining a current power generation load rate based on the current total load value of coal-fired power generation units and the number of coal-fired power generation units in each group;

[0273] determining the first target power generation load rate of each group based on the target load reduction value, the current power generation load rate, and the number of coal-fired power generation units in each group.

[0274] In some embodiments of the present application, the combination module 503 includes:

[0275] The second combination sub-module is configured to randomly combine the plurality of groups to obtain all combination modes.

[0276] A sixth determination sub-module is configured to determine groups belonging to the same combination mode as a combination respectively, to obtain a plurality of combinations.

[0277] According to the coal power unit peak regulation control device provided in the embodiments of the present application, the target load reduction value is obtained in response to receiving the load reduction instruction; the current running coal power unit is grouped according to a preset rule, to obtain a plurality of groups; the plurality of groups are combined, to obtain a plurality of combinations; wherein each combination includes at least one group; for each combination, the group in the combination is taken as a target peak regulation group, and the total coal consumption is determined based on the target peak regulation group related data and the target load reduction value; the minimum total coal consumption is determined based on the total coal consumption of each of the plurality of combinations; the group corresponding to the minimum coal consumption is determined as the target peak regulation group; and the coal power unit in the target peak regulation group is controlled to perform peak regulation based on the target load reduction value.

[0278] According to the embodiments of the present application, the present application further provides an electronic device and a readable storage medium.

[0279] As shown in Figure 6 , a block diagram of an electronic device according to an embodiment of the present application. The electronic device is intended to represent various forms of digital computers, such as laptops, desktops, tablets, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device can also represent various forms of mobile devices, such as personal digital assistants, cellular telephones, smartphones, wearable devices, and other similar computing devices. The components shown here, their connections and relationships, and their functions, are meant to be examples only, and are not intended to limit the implementations of the present application described and / or claimed in this document.

[0280] As shown in Figure 6 , the electronic device includes one or more processors 601, memory 602, and interfaces for connecting the components, including high-speed interfaces and low-speed interfaces. The components are connected to each other by different buses, and can be installed on a common motherboard or otherwise installed as needed. The processor can process instructions executed within the electronic device, including instructions stored in the memory or on the memory to display a GUI on an external input / output device, such as a display device coupled to the interface. In other embodiments, multiple processors and / or buses can be used with multiple memories and multiple memories, if desired. Similarly, multiple electronic devices can be connected, each providing part of the necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 6 In the electronic device, the processor 601 is taken as an example.

[0281] The memory 602 is a non-transitory computer readable storage medium provided by the present application. The memory stores instructions executable by the at least one processor, so that the at least one processor executes the coal-fired unit peak shaving control method provided by the present application. The non-transitory computer readable storage medium of the present application stores computer instructions for causing a computer to execute the coal-fired unit peak shaving control method provided by the present application.

[0282] The memory 602 is a non-transitory computer readable storage medium, which can be used to store non-transitory software programs, non-transitory computer executable programs and modules, such as program instructions / modules corresponding to the coal-fired unit peak shaving control method in the embodiments of the present application (for example, the obtaining module 501, the grouping module 502 and the combining module 503 shown in FIG. 5). The processor 601 executes various functional applications and data processing of the server by running the non-transitory software programs, instructions and modules stored in the memory 602, that is, implements the coal-fired unit peak shaving control method in the above method embodiments. Figure 5

[0283] The memory 602 can include a program storage area and a data storage area, wherein the program storage area can store an operating system and application programs required by at least one function; the data storage area can store data created according to the use of the parking navigation electronic device, etc. In addition, the memory 602 can include a high-speed random access memory, and can also include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state memory device. In some embodiments, the memory 602 can optionally include a memory remotely arranged with respect to the processor 601, and these remote memories can be connected to the parking navigation electronic device through a network. Examples of the above network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0284] The electronic device of the coal-fired unit peak shaving control method can further include an input device 603 and an output device 604. The processor 601, the memory 602, the input device 603 and the output device 604 can be connected through a bus or other means, and in FIG. 6, an example of connection through a bus is taken.

[0285] ​Input device 603 can receive input of digital or character information, as well as generate key signal input relating to user settings and function control of the parking navigation electronic device, such as a touch screen, keypad, mouse, trackpad, touchpad, pointing stick, one or more mouse buttons, trackball, joystick, etc. Output device 604 can include a display device, an auxiliary lighting device (e.g., LED), and a tactile feedback device (e.g., a vibrating motor), etc. The display device can include, but is not limited to, a liquid crystal display (LCD), a light emitting diode (LED) display, and a plasma display. In some embodiments, the display device can be a touch screen.

[0286] Various implementations of the systems and techniques described here can be realized in digital electronic circuitry, integrated circuitry, specially designed ASICs (application specific integrated circuits), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include implementation in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be special or general purpose, coupled to receive data and instructions from, and to transmit data and instructions to, a storage system, at least one input device, and at least one output device.

[0287] These computer programs (also known as programs, software, software applications or code) include machine instructions for a programmable processor, and can be implemented in a high-level procedural and / or object-oriented programming language, and / or in assembly / machine language. As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, apparatus and / or device (e.g., magnetic discs, optical disks, memory, Programmable Logic Devices (PLDs)) used to provide machine instructions and / or data to a programmable processor, including a machine-readable medium that receives machine instructions as a machine-readable signal. The term "machine-readable signal" refers to any signal used to provide machine instructions and / or data to a programmable processor.

[0288] To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the computer. Other kinds of devices can be used to provide for interaction with a user as well; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.

[0289] The systems and techniques described here can be implemented in a computing system that includes a back end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front end component (e.g., a user computer having a graphical user interface or a Web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back end, middleware, or front end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network (LAN), a wide area network (WAN), and the Internet.

[0290] The computer system can include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. A server can be a cloud server, also known as cloud computing server or cloud host, which is a host product in the cloud computing service system, to solve the defects of large management difficulty and weak business scalability in traditional physical host and VPS service ("Virtual Private Server", or simply "VPS").

[0291] It should be understood that various forms of flow shown above can be used, with steps reordered, added, or removed. For example, the steps recited in the present application can be performed in parallel, in series, or in a different order, without limitation herein, as long as the desired results of the technology disclosed in the present application are achieved.

[0292] The above detailed description does not limit the scope of the application. Various modifications, combinations, sub-combinations and alternatives can be made to the detailed embodiment disclosed herein without departing from the spirit and the principles of the application. Any modification, equivalent replacement or improvement made within the spirit and principles of the application shall fall within the scope of the application.

Claims

1. A peak-shaving control method for coal-fired power units, characterized in that, The method includes: In response to receiving a load reduction command, the target load reduction value is obtained; The currently operating coal-fired power units are grouped according to preset rules to obtain multiple groups; The multiple groups are combined to obtain multiple combinations; wherein each combination includes at least one of the groups; For each of the combinations, the groups within that combination are designated as target peak-shaving groups, and the total coal consumption is determined based on the relevant data of the target peak-shaving groups and the target load reduction value. Based on the total coal consumption of each of the multiple combinations, determine the minimum total coal consumption; The group corresponding to the minimum total coal consumption is determined as the target peak-shaving group; Based on the target load reduction value, control the coal-fired power units in the target peak-shaving group to perform peak shaving; The step of grouping currently operating coal-fired power units according to preset rules to obtain multiple groups includes: The installed capacity and initial steam inlet parameters of each of the currently operating coal-fired power units are obtained respectively. Obtain the preset group categories, as well as the corresponding installed capacity threshold and turbine inlet steam parameters for each preset group category; Based on the installed capacity and turbine inlet parameters of each of the currently operating coal-fired power units, the currently operating coal-fired power units are divided into their respective groups to obtain multiple groups; wherein each group includes at least one coal-fired power unit.

2. The method according to claim 1, characterized in that, The step of combining multiple groups to obtain multiple combinations includes: Based on the target load reduction value, a first target power generation load rate is determined for each group; wherein, the first target power generation load rate is the target power generation load rate for each group under the condition of individually reducing the load to the target load reduction value. In response to the first target power generation load rate meeting the first preset condition, the group corresponding to the first target power generation load rate is determined as a combination; In response to the first target power generation load rate not meeting the first preset condition, the group corresponding to the first target power generation load rate is determined as the first peak-shaving group; For each first peak-shaving group, the first target power generation load rate of the first peak-shaving group is adjusted to a preset load rate, and the second target load rate of each group other than the first peak-shaving group is determined based on the preset load rate; wherein, the second target load rate is the target load rate under the condition that the first peak-shaving group and the group corresponding to the second target load rate reduce the load together; In response to the second target power load rate meeting the second preset condition, the group corresponding to the second target power load rate is determined as the second peak shaving group, and the first peak shaving group and the second peak shaving group are divided into a combination; In response to the second target load factor not meeting the second preset condition, the first peak-shaving group and the group corresponding to the second target load factor are determined as new first peak-shaving groups, and the steps of adjusting the first target power generation load factor of the first peak-shaving group to the preset load factor for each first peak-shaving group are re-executed, and the second target load factor of each group other than the first peak-shaving group is determined respectively.

3. The method according to claim 2, characterized in that, For each first peak-shaving group, adjusting the first target power generation load factor of the first peak-shaving group to a preset load factor, and determining the second target power load factor for each of the other groups besides the first peak-shaving group based on the preset load factor, includes: For each first peak-shaving group, the first target power generation load rate of the first peak-shaving group is adjusted to a preset load rate; wherein, the preset load rate is the minimum load rate of the coal-fired power units in the first peak-shaving group; Obtain the current power generation load factor; Based on the preset load rate, the current power generation load rate, and the number of coal-fired power units in each group, the second target load rate for each group other than the first peak-shaving group is determined.

4. The method according to claim 3, characterized in that, The determination of total coal consumption based on the target peak-shaving grouping data and the target load reduction value includes: Based on the at least one target peak-shaving group, obtain the corresponding preset correlation formula for each group; wherein, the preset correlation formula is the correlation formula between power generation coal consumption and load factor; Based on the preset correlation of the at least one target peak-shaving group, the first target load rate, the second target load rate, and the number of coal-fired power units in each group, the total coal consumption of each of the multiple combinations is determined.

5. The method according to claim 2, characterized in that, The step of determining the first target generation load factor for each group based on the target load reduction value includes: Obtain the current total load value of the coal-fired power unit; The current power generation load rate is determined based on the current total load value of coal-fired power units and the number of coal-fired power units in each group; Based on the target load reduction value, the current power generation load rate, and the number of coal-fired power units in each of the multiple groups, the first target power generation load rate for each group is determined.

6. The method according to claim 1, characterized in that, The step of combining multiple groups to obtain multiple combinations includes: The multiple groups are randomly combined to obtain all possible combinations; Groups belonging to the same combination method are each identified as a group to obtain multiple combinations.

7. A peak-shaving control device for coal-fired power units, characterized in that, The device includes: The acquisition module is used to obtain the target load reduction value in response to receiving a load reduction command; The grouping module is used to group the currently operating coal-fired power units according to preset rules to obtain multiple groups; A combination module is used to combine multiple groups to obtain multiple combinations; wherein each combination includes at least one of the groups; The first determining module is used to, for each combination, take the group in the combination as the target peak-shaving group, and determine the total coal consumption based on the relevant data of the target peak-shaving group and the target load reduction value; The second determining module is used to determine the minimum total coal consumption based on the total coal consumption of each of the multiple combinations; The third determining module is used to determine the group corresponding to the minimum total coal consumption as the target peak-shaving group; The control module is used to control the coal-fired power units in the target peak-shaving group to perform peak shaving based on the target load reduction value; Specifically, the grouping module is used for: The installed capacity and initial steam inlet parameters of each of the currently operating coal-fired power units are obtained respectively. Obtain the preset group categories, as well as the corresponding installed capacity threshold and turbine inlet steam parameters for each preset group category; Based on the installed capacity and turbine inlet parameters of each of the currently operating coal-fired power units, the currently operating coal-fired power units are divided into their respective groups to obtain multiple groups; wherein each group includes at least one coal-fired power unit.

8. An electronic device, comprising: At least one processor; as well as A memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-6.

9. A non-transitory computer-readable storage medium storing computer instructions, wherein, The computer instructions are used to cause the computer to perform the method according to any one of claims 1-6.

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