Load adjustment method and apparatus for automatic generation control system

Abstract

The present application relates to the technical field of power system automation. Provided are a load adjustment method and apparatus for an automatic generation control system. The method comprises: obtaining a load value on the basis of the current dispatching set value and the previous dispatching set value; if the load value is within a small load set value range, obtaining the level of each generator unit on the basis of an adjustable capacity of each generator unit; on the basis of a relative relationship between the current dispatching set value and the previous dispatching set value, allocating the load value according to the levels, so as to obtain the current allocated value of each generator unit; and if the degrees of proximity of the current allocated values of several generator units driven by the same surge tank with respect to a boundary value of an adjustable interval are inconsistent, adjusting the current allocated values of the several generator units, such that the degrees of proximity of the adjusted current allocated values of the several generator units with respect to the boundary value of the adjustable interval are consistent. By using the method, the adjustment rate and adjustment accuracy of an automatic generation control system can be improved, thereby meeting dispatching requirements.

Description

Load regulation method and device for automatic power generation control system Technical Field

[0001] The present application relates to the technical field of power system automation, and in particular to a load regulation method and device for an automatic power generation control system, an automatic power generation control system, a storage medium, and a computer program product. Background Art

[0002] In order to improve the stability and reliability of the power system and to cope with load changes and other emergencies, an automatic power generation control system has been introduced. The system monitors the load changes of the power grid and whether there are any abnormalities in the output power of the generator, and automatically adjusts the output power of the generator to maintain the frequency and voltage of the power grid within a stable range, ensuring that the power grid can provide continuous and stable power supply.

[0003] The existing automatic power generation control system uses a fixed average distribution strategy in which multiple generator sets participate in regulating the output power of the generator. However, the regulation rate and accuracy cannot meet the scheduling requirements.

[0004] Summary of the Invention

[0005] Based on this, it is necessary to provide a load regulation method and device for an automatic power generation control system, an automatic power generation control system, a computer-readable storage medium and a computer program product to address the above technical problems.

[0006] In a first aspect, the present application provides a load regulation method for an automatic power generation control system, comprising:

[0007] According to the current dispatch setting value and the last dispatch setting value, the load value is obtained;

[0008] If the load value is within the range of the minimum load setting value, the level of each generator set is obtained according to the adjustable capacity of each generator set with respect to the output power; wherein the larger the adjustable capacity, the higher the level;

[0009] According to the last allocated value of the output power of each generator set and the adjustable range, the sum of the increaseable capacity of the generator set and the sum of the decreaseable capacity of the generator set are obtained;

[0010] In the case where the current scheduling setting value is greater than the previous scheduling setting value, if the sum of the units' increaseable capacities is greater than the load value, the load values ​​are allocated in descending order to obtain the current allocation value for each generator set;

[0011] In the case where the current scheduling setting value is less than the previous scheduling setting value, if the sum of the units' decrementable capacities is greater than the load value, the load values ​​are allocated in descending order to obtain the current allocation value for each generator set;

[0012] If the current allocation values ​​of several generator sets driven by the same pressure-regulating well are inconsistent in their proximity to the boundary value of the adjustable range, the current allocation values ​​of the several generator sets are adjusted so that the current allocation values ​​of the several generator sets after adjustment are consistent in their proximity to the boundary value of the adjustable range.

[0013] In one embodiment, before obtaining the level of each generator set based on the adjustable capacity of each generator set with respect to output power, the method further includes:

[0014] Obtaining subtraction results of each generator set based on the maximum output and active power output value of each generator set under the current water head;

[0015] If the subtraction result of one of the generator sets is greater than the adjustable capacity of the surge tank where the one of the generator sets is located with respect to output power, the adjustable capacity of the surge tank where the one of the generator sets is located with respect to output power is used as the adjustable capacity of the one of the generator sets with respect to output power;

[0016] If the subtraction result of one of the generator sets is less than the adjustable capacity of the surge tank where the one of the generator sets is located with respect to output power, the subtraction result of the one of the generator sets is used as the adjustable capacity of the one of the generator sets with respect to output power.

[0017] In one embodiment, obtaining the sum of the increaseable capacity and the sum of the decreaseable capacity of the generator sets according to the last allocated value of the output power of each generator set and the adjustable range includes:

[0018] Obtaining the increaseable capacity of the output power of each generator set according to the last allocated value of the output power of each generator set and the boundary value of the adjustable interval;

[0019] According to the increaseable capacity of each generator set with respect to output power, the sum of the increaseable capacity of the units is obtained;

[0020] Obtaining the reducible capacity of each generator set with respect to output power according to the last allocated value of the output power of each generator set and the boundary value of the adjustable interval;

[0021] According to the decremental capacity of each generator set with respect to output power, the sum of the decremental capacity of the units is obtained.

[0022] In one embodiment, allocating the load values ​​in descending order of levels includes:

[0023] If the output power increase capacity of the highest-level generator set is greater than the load value, the load value is allocated entirely to the highest-level generator set;

[0024] If the output power increase capacity of the highest-level generator group is less than the load value, part of the load value is first allocated to the highest-level generator group so that the current allocation value of the highest-level generator group is the upper boundary value of the adjustable range of the highest-level generator group; and then the remaining part of the load value is allocated to the second-highest-level generator group.

[0025] In one embodiment, allocating the load values ​​in descending order of levels includes:

[0026] If the output power reduction capacity of the highest-level generator set is greater than the load value, the load value is allocated entirely to the highest-level generator set;

[0027] If the reducible capacity of the output power of the highest-level generator group is less than the load value, part of the load value is first allocated to the highest-level generator group so that the current allocated value of the highest-level generator group is the lower boundary value of the adjustable range of the highest-level generator group; and then the remaining part of the load value is allocated to the second-highest-level generator group.

[0028] In one embodiment, if the current allocation values ​​of the multiple generator sets driven by the same surge tank are inconsistent in their proximity to the boundary value of the adjustable range, adjusting the current allocation values ​​of the multiple generator sets so that the adjusted current allocation values ​​of the multiple generator sets are consistent in their proximity to the boundary value of the adjustable range includes:

[0029] When the current allocation values ​​of the plurality of generator sets driven by the same surge tank are not close to the upper boundary value of the adjustable interval, determining a target generator set whose current allocation value is closer to the upper boundary value of the adjustable interval;

[0030] According to the increase set amount, the current allocation value of the target generator set is reduced and the current allocation values ​​of other generator sets are increased, so that the current allocation values ​​of the several generator sets after adjustment are consistent in proximity to the boundary value of the adjustable range.

[0031] In one embodiment, if the current allocation values ​​of the multiple generator sets driven by the same surge tank are inconsistent in their proximity to the boundary value of the adjustable range, adjusting the current allocation values ​​of the multiple generator sets so that the adjusted current allocation values ​​of the multiple generator sets are consistent in their proximity to the boundary value of the adjustable range includes:

[0032] When the current allocation values ​​of the plurality of generator sets driven by the same surge tank are inconsistent in their proximity to the lower boundary value of the adjustable interval, determining a target generator set whose current allocation value is closer to the lower boundary value of the adjustable interval;

[0033] According to the set reduction amount, the current allocation value of the target generator set is increased and the current allocation values ​​of other generator sets are reduced, so that the current allocation values ​​of the several generator sets after adjustment are consistent in proximity to the boundary value of the adjustable range.

[0034] In a second aspect, the present application further provides a load regulation device for an automatic power generation control system, comprising:

[0035] The load value acquisition module is used to obtain the load value based on the current scheduling setting value and the previous scheduling setting value;

[0036] a level acquisition module, configured to obtain the level of each generator set according to the adjustable capacity of each generator set with respect to output power if the load value is within the range of a minimum load setting value; wherein the larger the adjustable capacity, the higher the level;

[0037] A capacity sum acquisition module, configured to obtain the sum of the increaseable capacity and the sum of the decreaseable capacity of the generator sets according to the last allocated value of the output power of each generator set and the adjustable range;

[0038] a primary allocation module, configured to allocate the load values ​​in descending order of levels to obtain a current allocation value for each generator set when the current scheduling setting value is greater than the previous scheduling setting value and the sum of the incrementable capacities of the generator sets is greater than the load value;

[0039] The primary allocation module is further configured to allocate the load values ​​in descending order of levels to obtain a current allocation value for each generator set when the current scheduling setting value is less than the previous scheduling setting value and the sum of the de-capacity of the generator sets is greater than the load value;

[0040] The secondary distribution module is used to adjust the current distribution values ​​of several generator sets driven by the same pressure-regulating well if the current distribution values ​​of the several generator sets are inconsistent in their proximity to the boundary value of the adjustable interval, so that the current distribution values ​​of the several generator sets after adjustment are consistent in their proximity to the boundary value of the adjustable interval.

[0041] In a third aspect, the present application further provides an automatic power generation control system, which includes a memory and a processor, wherein the memory stores a computer program and the processor executes the above method.

[0042] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program is used by a processor to execute the above method.

[0043] In a fifth aspect, the present application further provides a computer program product, wherein the computer program product includes a computer program, and the computer program is executed by a processor to execute the above method.

[0044] The load regulation method, device, automatic power generation control system, storage medium and computer program product of the automatic power generation control system obtain a load value based on the current scheduling setting value and the previous scheduling setting value; if the load value is within the minimum load setting value range, then based on the adjustable capacity of each generator set with respect to output power, The level of each generator set is obtained; wherein, the larger the adjustable capacity, the higher the level; according to the last allocated value of the output power of each generator set and the adjustable interval, the sum of the increaseable capacity of the unit and the sum of the decreaseable capacity of the unit are obtained; according to the current scheduling setting value and the last scheduling setting value, the load value is obtained; when the current scheduling setting value is greater than the last scheduling setting value, if the sum of the increaseable capacity of the unit is greater than the load value, the load value is allocated in order from high to low levels to obtain the current allocated value of each generator set; when the current scheduling setting value is less than the last scheduling setting value, if the sum of the decreaseable capacity of the unit is greater than the load value, the load value is allocated in order from high to low levels to obtain the current allocated value of each generator set; if the current allocated values ​​of several generator sets driven by the same surge tank are inconsistent in proximity to the boundary value of the adjustable interval, the current allocated values ​​of several generator sets are adjusted so that the adjusted current allocated values ​​of several generator sets are consistent in proximity to the boundary value of the adjustable interval. This scheme obtains the load value based on the current scheduling set value and the last scheduling set value; if the load value is within the small load setting value range, the level of each generator set is obtained according to the adjustable capacity of each generator set with respect to the output power; the sum of the increaseable capacity of the unit and the sum of the decreaseable capacity of the unit are obtained according to the last allocated value of the output power of each generator set and the adjustable interval; the load value is allocated according to the level of each generator set to obtain the current allocated value of each generator set, thereby completing the primary allocation of the small load; then, if the current allocated values ​​of several generator sets driven by the same surge tank are inconsistent in their proximity to the boundary value of the adjustable interval, the current allocated values ​​of several generator sets are adjusted so that the current allocated values ​​of several generator sets after adjustment are consistent in their proximity to the boundary value of the adjustable interval, thereby completing the secondary fine-tuning of the small load, optimizing the adjustment logic of the automatic power generation control system, and improving the adjustment rate and adjustment accuracy of the automatic power generation control system to meet the scheduling requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0046] FIG1 is a diagram illustrating an application environment of a load regulation method of an automatic power generation control system according to an embodiment;

[0047] FIG2 is a flow chart of a load regulation method of an automatic power generation control system according to an embodiment;

[0048] FIG3 is a flow chart of a method for primary distribution of small loads by an automatic power generation control system according to one embodiment;

[0049] FIG4 is a structural block diagram of a load adjustment device of an automatic power generation control system according to one embodiment;

[0050] FIG5 is a diagram showing the internal structure of an automatic power generation control system according to an embodiment. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0052] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0053] The load regulation method of the automatic power generation control system provided in the embodiment of the present application can be applied to the application environment shown in Figure 1. In which, each generator set 102 communicates with the automatic power generation control system 104 through a communication network. The data storage system can store data that the automatic power generation control system 104 needs to process. The data storage system can be integrated on the automatic power generation control system 104, or it can be placed on the cloud or other network servers. The automatic power generation control system 104 obtains the load value based on the current scheduling setting value and the last scheduling setting value; if the load value is within the small load setting value range, the level of each generator set 102 is obtained based on the adjustable capacity of each generator set 102 with respect to the output power; wherein, the larger the adjustable capacity, the higher the level; the automatic power generation control system 104 obtains the sum of the unit's increaseable capacity and the sum of the unit's decreaseable capacity based on the last allocated value of the output power of each generator set 102 and the adjustable range; the automatic power generation control system 104 obtains the load value based on the current scheduling setting value and the last scheduling setting value; when the current scheduling setting value is greater than the last scheduling setting value, if the sum of the unit's increaseable capacity is greater than the load value, the automatic power generation control system 104 is leveled. The load values ​​are allocated in order from high to low to obtain the current allocation value of each generator set 102; when the current scheduling setting value is less than the previous scheduling setting value, if the sum of the reducible capacities of the units is greater than the load value, the automatic power generation control system 104 allocates the load values ​​in order from high to low levels to obtain the current allocation value of each generator set 102; if the current allocation value of one of the generator sets 102 is close to the boundary value of the adjustable interval, if the current allocation values ​​of several generator sets driven by the same surge tank are inconsistent in their proximity to the boundary value of the adjustable interval, the automatic power generation control system 104 adjusts the current allocation values ​​of several generator sets so that the current allocation values ​​of the several generator sets after adjustment are consistent in their proximity to the boundary value of the adjustable interval.

[0054] In an exemplary embodiment, as shown in FIG2 , a load regulation method for an automatic power generation control system is provided. The method is described by taking the automatic power generation control system 104 in FIG1 as an example, and includes the following steps S201 to S206 . In particular:

[0055] Step S201, obtaining a load value according to the current scheduling setting value and the previous scheduling setting value.

[0056] The current dispatch setting value refers to the output power that the automatic power generation control system requires the power system to achieve in this load adjustment; the previous dispatch setting value refers to the output power that the automatic power generation control system requires the power system to achieve in the previous load adjustment.

[0057] The result obtained by subtracting the current scheduling setting value from the previous scheduling setting value is used as the load value.

[0058] The load value represents the change in the output power of the power system from the last load adjustment to the current load adjustment. When the load value is greater than 0, it represents that the output power of the power system needs to increase. When the load value is less than 0, it represents that the output power of the power system needs to decrease.

[0059] Step S202: If the load value is within the small load setting value range, the level of each generator set is obtained according to the adjustable capacity of each generator set with respect to output power; wherein, the larger the adjustable capacity, the higher the level.

[0060] The small load threshold value can be set according to actual conditions, and the small load can be set between 20MW and 40MW. When the load value is within the range of 20MW to 40MW, it is determined that the load value is within the small load setting value range.

[0061] The power system of a hydropower station may include multiple generator sets. Each generator set can output power to the outside under the action of water head. When the water head output reaches the maximum output, the output power of the generator set reaches the maximum load. When the water head output reaches the minimum output, the output power of the generator set is at the minimum load. The output power of the generator set can be between the minimum load and the maximum load. The interval formed by the minimum load and the maximum load can be called the adjustable interval of the generator set's output power. The current actual output power of the generator set can be called the active power output value. Based on the active power output value and the maximum load, it can be determined how much room for improvement there is in the output power of the generator set. This improvement room can be called the adjustable capacity of the generator set's output power.

[0062] Step S203 : obtaining the sum of the increaseable capacity and the sum of the decreaseable capacity of the generator sets according to the last allocated value of the output power of each generator set and the adjustable range.

[0063] The last allocated value of output power of each generator set refers to the power set value allocated to each generator set by the automatic power generation control system in the last load adjustment.

[0064] Based on the last allocated value of the generator set's output power and the boundary value of the adjustable range, it can be determined how much room there is for increasing the generator set's output power. This room for increase can be called the generator set's capacity increase.

[0065] Based on the last allocated value of the generator set's output power and the boundary value of the adjustable range, it can be determined how much room there is for the generator set's output power to decrease. This room for decrease can be called the generator set's reducible capacity.

[0066] In different load distributions, the distribution values ​​of the generator sets regarding output power are different, so the capacity that can be increased and reduced by the sets are not fixed and can change.

[0067] Based on the output power increase capacity of each generator set, the sum of the unit's increaseable capacity is calculated. This sum represents the total output power capacity that can be increased by all generator sets in the power system. Based on the output power reduction capacity of each generator set, the sum of the unit's decreaseable capacity is calculated. This sum represents the total output power capacity that can be reduced by all generator sets in the power system.

[0068] The vibration range usually refers to the frequency range in which oscillations or fluctuations occur in the power system. Generally, the output power of a generator set cannot be within this frequency range. The adjustable range of the generator set is the output power range of the generator set minus the vibration range.

[0069] For example, when the output power range of a generator set is 0MW to 220MW and the vibration range of the generator set is 60MW to 180MW, the adjustable range of the generator set is 0MW to 60MW and 180MW to 220MW, and the boundary values ​​of the adjustable range are 0MW, 60MW, 180MW, and 220MW. When the last allocation value of a generator set is 200MW, 200MW is within the adjustable range of 180MW to 220MW. Based on the last allocation value of 200MW for the output power of the generator set and the upper boundary value of 220MW of the adjustable range of 180MW to 220MW, it can be determined that the unit capacity of the generator set can be increased by 20MW; based on the last allocation value of 200MW for the output power of the generator set and the lower boundary value of 180MW of the adjustable range of 180MW to 220MW, it can be determined that the unit capacity of the generator set can be reduced by 20MW. Based on the last allocation value of 200MW for the output power of the generator set and the lower boundary value of 180MW of the adjustable range of 180MW to 220MW, it can be determined that the unit capacity of the generator set can be reduced by 20MW. As well as the upper boundary value of 60MW in the adjustable range from 0MW to 60MW, it can be determined that the unit capacity reduction of the generator set is 140MW. Based on the last allocated value of 200MW for the output power of the generator set and the lower boundary value of 0MW in the adjustable range from 0MW to 60MW, it can be determined that the unit capacity reduction of the generator set is 200MW. Since the output power of the generator set cannot be within the vibration range, the unit capacity reduction of the generator set is 20MW, 140MW to 200MW.

[0070] Step S204: when the current scheduling setting value is greater than the previous scheduling setting value, if the sum of the units' increaseable capacity is greater than the load value, the load value is allocated in descending order to obtain the current allocation value of each generator set.

[0071] When the current dispatch setting value is greater than the previous dispatch setting value, it indicates that the output power of the power system needs to increase.

[0072] When the sum of the units' increaseable capacities is greater than the load value, it indicates that the total output power that can be increased by all current generator sets is greater than the load value, and all current generator sets can meet the current regulation requirements; when allocating load values ​​to the generator sets of the power system, the load values ​​can be allocated in descending order to determine the current allocation value of each generator set.

[0073] Step S205: when the current scheduling setting value is less than the previous scheduling setting value, if the sum of the units' decrementable capacities is greater than the load value, the load values ​​are allocated in descending order to obtain the current allocation value of each generator set.

[0074] When the current dispatch setting value is less than the previous dispatch setting value, it indicates that the output power of the power system needs to be reduced.

[0075] When the sum of the units' reducible capacities is greater than the load value, it indicates that the total output power that can be reduced by all current generator sets is greater than the load value, and all current generator sets can meet the current regulation requirements. When allocating load values ​​to the generator sets in the power system, the load values ​​can be allocated in descending order to determine the current allocation value of each generator set.

[0076] Step S206: If the current allocation values ​​of several generator sets driven by the same surge tank are inconsistent in their proximity to the boundary value of the adjustable range, the current allocation values ​​of the several generator sets are adjusted so that the current allocation values ​​of the several generator sets after adjustment are consistent in their proximity to the boundary value of the adjustable range.

[0077] In the power system of a hydropower station, a mode in which one surge tank carries multiple generator sets can be adopted. When a mode in which one surge tank carries two generator sets is adopted, this mode can also be called a one-hole, two-machine mode. For a certain boundary value of the adjustable range, when the current allocation value of one generator set in the surge tank is closer to the boundary value, and the current allocation value of other generator sets is farther away from the boundary value, if the generator set is directly controlled to vibrate according to the current allocation value, the vibration conditions between the generator sets in the same surge tank will be inconsistent, affecting the stability of the power system. Therefore, for a certain boundary value of the adjustable range, when the current allocation value of different generator sets in the surge tank is inconsistent with the boundary value, the current allocation value of the generator sets in the surge tank can be fine-tuned to make the current allocation value of the generator sets in the surge tank more consistent with the boundary value, thereby reducing the impact on the stability and safety of the power system.

[0078] When the output power range of a generator set is 0MW to 220MW and the vibration range of the generator set is 60MW to 180MW, the adjustable range of the generator set is 0MW to 60MW and 180MW to 220MW, and the boundary values ​​of the adjustable range are 0MW, 60MW, 180MW, and 220MW. For each boundary value of the adjustable range, the proximity of the current allocation values ​​of several generator sets driven by the same surge tank to the boundary value can be determined. If the current allocation values ​​of several generator sets driven by the same surge tank are inconsistent in their proximity to the boundary value, the current allocation values ​​of the several generator sets are adjusted to ensure that the current allocation values ​​of the generator sets in the surge tank are more consistent with the boundary value.

[0079] In one embodiment, in step S206, if the current allocation values ​​of several generator sets driven by the same surge tank are inconsistent in their proximity to the boundary value of the adjustable interval, the current allocation values ​​of the several generator sets are adjusted so that the current allocation values ​​of the several generator sets after adjustment are consistent in their proximity to the boundary value of the adjustable interval. The specific steps are as follows: when the current allocation values ​​of several generator sets driven by the same surge tank are inconsistent in their proximity to the upper boundary value of the adjustable interval, determine the target generator set whose current allocation value is closer to the upper boundary value of the adjustable interval; reduce the current allocation value of the target generator set and increase the current allocation values ​​of other generator sets according to the increase set amount, so that the current allocation values ​​of the several generator sets after adjustment are consistent in their proximity to the boundary value of the adjustable interval.

[0080] When the difference between the current allocation value of any generator set in the pressure-regulating well and the upper boundary value of the adjustable interval is less than the upper boundary threshold, it indicates that the current allocation value of the generator set is close to the upper boundary value of the adjustable interval; when the difference between the current allocation value of any generator set in the pressure-regulating well and the upper boundary value of the adjustable interval is greater than the upper boundary threshold, it indicates that the current allocation value of the generator set is close to the upper boundary value of the adjustable interval; when the current allocation values ​​of several generator sets driven by the same pressure-regulating well are inconsistent in their proximity to the upper boundary value of the adjustable interval, the target generator set with the largest proximity to the upper boundary value of the adjustable interval is determined; according to the increase set amount, the current allocation value of the target generator set is reduced and the current allocation values ​​of other generator sets are increased, so that the current allocation values ​​of several generator sets after adjustment are consistent in their proximity to the boundary value of the adjustable interval.

[0081] For example, the surge tank A can carry two generator sets, namely generator set 1 and generator set 2. After one allocation is completed, the current allocation value of generator set 1 is 220MW, and the current allocation value of generator set 2 is 210MW. For the upper boundary value of the adjustable interval of 220MW, the difference between the current allocation value of generator set 1 and the upper boundary value of 220MW of the adjustable interval is 0, which is less than the upper boundary threshold value of 5, indicating that the current allocation value of generator set 1 is close to the upper boundary value of the adjustable interval. The difference between the current allocation value of generator set 2 and the upper boundary value of 220MW of the adjustable interval is 10, which is greater than the upper boundary threshold value of 5, indicating that the current allocation value of generator set 2 is close to the upper boundary value of the adjustable interval. At this time, the current allocation values ​​of the two generator sets driven by the surge tank A are close to the upper boundary value of the adjustable interval. , the current allocation value of generator set 1 is reduced by 5MW, and the current allocation value of generator set 2 is increased by 5MW. The result of redistribution is that the current allocation value of generator set 1 is 215MW. The difference between the current allocation value of generator set 1 and the upper boundary value of 220MW of the adjustable interval is 5, which is equal to the upper boundary threshold value of 5, indicating that the current allocation value of generator set 1 is close to the upper boundary value of the adjustable interval. The current allocation value of generator set 2 is 215MW. The difference between the current allocation value of generator set 2 and the upper boundary value of 220MW of the adjustable interval is 5, which is equal to the upper boundary threshold value of 5, indicating that the current allocation value of generator set 2 is close to the upper boundary value of the adjustable interval. Therefore, the current allocation values ​​of generator set 1 and generator set 2 after adjustment are consistent in their proximity to the boundary value of the adjustable interval.

[0082] For the upper boundary value of the adjustable interval of 60MW, the difference between the current allocation value of generator set 1 and the upper boundary value of 60MW of the adjustable interval is 160, which is greater than the upper boundary threshold value of 5, indicating that the current allocation value of generator set 1 is close to the upper boundary value of the adjustable interval. The difference between the current allocation value of generator set 2 and the upper boundary value of 60MW of the adjustable interval is 150, which is greater than the upper boundary threshold value of 5, indicating that the current allocation value of generator set 2 is close to the upper boundary value of the adjustable interval. At this time, the current allocation values ​​of the two generator sets driven by pressure-regulating well A are consistent in their proximity to the upper boundary value of the adjustable interval, and there is no need to adjust the current allocation values ​​of the two generator sets driven by pressure-regulating well A.

[0083] In one embodiment, in step S206, if the current allocation values ​​of several generator sets driven by the same surge tank are inconsistent in their proximity to the boundary value of the adjustable interval, the current allocation values ​​of the several generator sets are adjusted so that the current allocation values ​​of the several generator sets after adjustment are consistent in their proximity to the boundary value of the adjustable interval. The specific steps are as follows: when the current allocation values ​​of several generator sets driven by the same surge tank are inconsistent in their proximity to the lower boundary value of the adjustable interval, determine the target generator set whose current allocation value is closer to the lower boundary value of the adjustable interval; increase the current allocation value of the target generator set and reduce the current allocation values ​​of other generator sets according to the set reduction amount, so that the current allocation values ​​of the several generator sets after adjustment are consistent in their proximity to the boundary value of the adjustable interval.

[0084] For example, surge tank B can carry two generator sets, generator set 3 and generator set 4. After one allocation is completed, the current allocation value of generator set 3 is 183MW, and the current allocation value of generator set 4 is 190MW. For the lower boundary value of the adjustable interval of 180MW, the difference between the current allocation value of generator set 3 and the lower boundary value of 180MW of the adjustable interval is 3, which is less than the lower boundary threshold value of 5. The difference between the current allocation value of generator set 4 and the lower boundary value of 180MW of the adjustable interval is 10, which is greater than the lower boundary threshold value of 5. At this time, the current allocation values ​​of the two generator sets driven by surge tank B are inconsistent in their proximity to the lower boundary value of the adjustable interval. In this case, the current allocation value of generator set 3 increases by 4MW, and the current allocation value of generator set 4 increases by 4MW. The current allocation value of the generator group is reduced by 4MW. The result of redistribution is that the current allocation value of generator group 3 is 187MW. The difference between the current allocation value of generator group 3 and the lower boundary value of 180MW of the adjustable interval is 7, which is greater than the lower boundary threshold value of 5, indicating that the current allocation value of generator group 3 is close to the lower boundary value of the adjustable interval. The current allocation value of generator group 4 is 186MW. The difference between the current allocation value of generator group 4 and the lower boundary value of 180MW of the adjustable interval is 6, which is greater than the lower boundary threshold value of 5, indicating that the current allocation value of generator group 4 is close to the lower boundary value of the adjustable interval. Therefore, the current allocation values ​​of generator groups 3 and 4 after adjustment are consistent in their proximity to the boundary value of the adjustable interval.

[0085] For the lower boundary value of the adjustable interval of 0MW, the difference between the current allocation value of generator set 3 and the upper boundary value of the adjustable interval of 0MW is 183, which is greater than the upper boundary threshold value of 5, indicating that the current allocation value of generator set 1 is close to the upper boundary value of the adjustable interval. The difference between the current allocation value of generator set 4 and the upper boundary value of 0MW of the adjustable interval is 190, which is greater than the upper boundary threshold value of 5, indicating that the current allocation value of generator set 2 is close to the upper boundary value of the adjustable interval. At this time, the current allocation values ​​of the two generator sets driven by pressure-regulating well B are consistent in proximity to the upper boundary value of the adjustable interval, and there is no need to adjust the current allocation values ​​of the two generator sets driven by pressure-regulating well B.

[0086] In the load regulation method of the automatic power generation control system described above, a load value is obtained based on the current dispatch setting value and the previous dispatch setting value; if the load value is within the small load setting value range, the level of each generator set is obtained based on the adjustable capacity of each generator set with respect to output power; the sum of the increaseable capacity of the unit and the sum of the decreaseable capacity of the unit are obtained based on the previous allocation value of the output power of each generator set and the adjustable range; the load value is obtained based on the current dispatch setting value and the previous dispatch setting value; the load value is allocated according to the level of each generator set to obtain the current allocation value of each generator set, thereby completing the primary allocation of the small load; then, if the current allocation values ​​of several generator sets driven by the same surge tank are inconsistent in their proximity to the boundary value of the adjustable range, the current allocation values ​​of the several generator sets are adjusted so that the adjusted current allocation values ​​of the several generator sets are consistent in their proximity to the boundary value of the adjustable range, thereby completing the secondary fine-tuning of the small load, optimizing the regulation logic of the automatic power generation control system, and improving the regulation rate and regulation accuracy of the automatic power generation control system to meet the dispatch requirements.

[0087] In one embodiment, before obtaining the level of each generator set based on the adjustable capacity of each generator set with respect to output power, the method provided in the present application further includes: obtaining the subtraction results of each generator set based on the maximum output and active power value of each generator set under the current water head; if the subtraction result of one of the generator sets is greater than the adjustable capacity of the pressure regulating well where one of the generator sets is located with respect to output power, the adjustable capacity of the pressure regulating well where one of the generator sets is located with respect to output power is used as the adjustable capacity of one of the generator sets with respect to output power; if the subtraction result of one of the generator sets is less than the adjustable capacity of the pressure regulating well where one of the generator sets is located with respect to output power, the subtraction result of one of the generator sets is used as the adjustable capacity of one of the generator sets with respect to output power.

[0088] The maximum output of each generator set under the current water head refers to the maximum power value that the generator set can output safely and stably under the current water head conditions.

[0089] The actual active power value of each generator set refers to the power value actually output by each generator set.

[0090] In one embodiment, in step S203, the sum of the increaseable capacity of the unit and the sum of the decreaseable capacity of the unit are obtained based on the last allocated value of the output power of each generator set and the adjustable interval. The specific steps are as follows: based on the last allocated value of the output power of each generator set and the boundary value of the adjustable interval, the increaseable capacity of each generator set with respect to the output power is obtained; based on the increaseable capacity of each generator set with respect to the output power, the sum of the increaseable capacity of the unit is obtained; based on the last allocated value of the output power of each generator set and the boundary value of the adjustable interval, the decreaseable capacity of each generator set with respect to the output power is obtained; based on the decreaseable capacity of each generator set with respect to the output power, the sum of the decreaseable capacity of the unit is obtained.

[0091] The adjustable range of output power of each generator set is usually defined by the minimum load and maximum load endpoints. The minimum load value is used as the lower boundary value of the adjustable range, and the maximum load value is used as the upper boundary value of the adjustable range.

[0092] For any generator set, the upper boundary value of the adjustable range of the generator set's output power minus the last allocated value of the generator set's output power is used as the scalable capacity of the generator set's output power.

[0093] For any generator set, the value obtained by subtracting the lower boundary value of the adjustable range of the generator set's output power from the last allocated value of the generator set's output power is used as the reducible capacity of the generator set's output power.

[0094] In one embodiment, after the current scheduling setting value is greater than the previous scheduling setting value in step S204, the method provided in the present application also includes: determining whether the sum of the units' increaseable capacity is greater than the load value; if the sum of the units' increaseable capacity is less than the load value, then distributing the load value evenly to each generator set.

[0095] When the sum of the units' increaseable capacities is less than the load value, it indicates that the total output power that can be increased by all current generator sets is less than the load value. All current generator sets cannot meet the current regulation requirements, and the load value needs to be evenly distributed to each generator set.

[0096] In one embodiment, after the current scheduling setting value is less than the previous scheduling setting value in step S205, the method provided in the present application also includes: determining whether the sum of the units' reducible capacities is greater than the load value; if the sum of the units' reducible capacities is less than the load value, then distributing the load value evenly to each generator set.

[0097] When the sum of the units' reducible capacities is less than the load value, it indicates that the total output power that can be reduced by all current generator sets is less than the load value. All current generator sets cannot meet the current regulation requirements, and the load value needs to be evenly distributed to each generator set.

[0098] In one embodiment, the load values ​​are allocated in order from high to low levels in step S204, and the specific steps are as follows: if the output power increase capacity of the highest-level generator set is greater than the load value, the entire load value is allocated to the highest-level generator set; if the output power increase capacity of the highest-level generator set is less than the load value, part of the load value is first allocated to the highest-level generator set, so that the current allocation value of the highest-level generator set is the upper boundary value of the adjustable range of the highest-level generator set; and then the remaining part of the load value is allocated to the second-highest-level generator set.

[0099] If there is still load value left after allocating the remaining part of the load value to the generator set with the second highest level, the remaining part of the load value will be allocated to the generator set with the third highest level, and so on, until all the load values ​​are allocated to the generator sets, then the distribution of small loads will be completed.

[0100] For example, when the output power increase capacity 30 of the highest-level generator set is greater than the load value 25, the load value 25 is allocated entirely to the highest-level generator set; if the output power increase capacity 15 of the highest-level generator set is less than the load value 25, then part of the load value 15 is first allocated to the highest-level generator set, so that the current allocation value of the highest-level generator set is the upper boundary value of the adjustable range of the highest-level generator set; then the remaining part 10 of the load value is allocated to the second-highest-level generator set. If there is still a load value of 5 after allocating the remaining part 10 of the load value to the second-highest-level generator set, then the remaining part 5 of the load value is allocated to the third-highest-level generator set, and so on, until all the load values ​​are allocated to the generator sets, and the one-time allocation of small loads is ended.

[0101] The generator set with the highest level has the largest capacity to increase its output power. Allocating load values ​​in descending order of level can quickly complete the allocation, and the number of generator sets that need to increase their output power is less than the number of generator sets in the regulation method of evenly distributing the load values ​​to each generator set, which can improve the regulation rate.

[0102] In addition, by allocating load values ​​in descending order of levels, the output power change of the generator set that needs to increase output power is relatively large, which can reduce the influence of the mechanical adjustment dead zone of the turbine regulation and the power adjustment dead zone designed by the program on the output power of the generator set. At this time, the execution effect of adjusting the output power of the generator set is better, and the adjustment accuracy can be improved.

[0103] In one embodiment, the load values ​​are allocated in order from high to low levels in step S205, and the specific steps are as follows: if the reducible capacity of the output power of the highest-level generator set is greater than the load value, the entire load value is allocated to the highest-level generator set; if the reducible capacity of the output power of the highest-level generator set is less than the load value, part of the load value is first allocated to the highest-level generator set, so that the current allocation value of the highest-level generator set is the lower boundary value of the adjustable range of the highest-level generator set; and then the remaining part of the load value is allocated to the second-highest-level generator set.

[0104] If there is still load value left after allocating the remaining part of the load value to the generator set with the second highest level, the remaining part of the load value will be allocated to the generator set with the third highest level, and so on, until all the load values ​​are allocated to the generator sets, then the distribution of small loads will be completed.

[0105] For example, when the reducible capacity 30 of the highest-level generator set with respect to output power is greater than the load value 25, the entire load value 25 is allocated to the highest-level generator set; if the reducible capacity 15 of the highest-level generator set with respect to output power is less than the load value 25, then part of the load value 15 is first allocated to the highest-level generator set, so that the current allocation value of the highest-level generator set is the upper boundary value of the adjustable range of the highest-level generator set; then the remaining part 10 of the load value is allocated to the second-highest-level generator set. If there is still a load value of 5 after allocating the remaining part 10 of the load value to the second-highest-level generator set, then the remaining part 5 of the load value is allocated to the third-highest-level generator set, and so on, until all the load values ​​are allocated to the generator sets, and the one-time allocation of small loads is ended.

[0106] The generator set with the highest level has the largest capacity to reduce output power. Allocating load values ​​in descending order of level can quickly complete the allocation, and the number of generator sets that need to reduce output power is less than the number of generator sets in the regulation method of evenly distributing load values ​​to each generator set, which can improve the regulation rate.

[0107] In addition, the load values ​​are distributed in order from high to low levels. The output power change of the generator set that needs to reduce the output power is relatively large, which can reduce the influence of the mechanical adjustment dead zone of the turbine regulation and the power adjustment dead zone designed by the program on the output power of the generator set. At this time, the execution effect of adjusting the output power of the generator set is better, and the adjustment accuracy can be improved.

[0108] In order to better understand the above method, an application example of primary distribution of small loads in a load regulation method of an automatic power generation control system is described in detail below. The process steps of this application example are shown in FIG3 .

[0109] Step S301, obtain the load value according to the current scheduling setting value and the last scheduling setting value; Step S302, determine whether the load value is within the small load setting value range; if the load value is within the small load setting value range, enter step S303 and enter the small load distribution strategy; if the load value is not within the small load setting value range, enter step S311 and distribute the load value evenly to each generator set; Step S304, obtain the adjustable capacity of each generator set with respect to output power; Step S305, obtain the level of each generator set according to the adjustable capacity of each generator set with respect to output power; Step S306, obtain the sum of the increaseable capacity of the unit and the sum of the decreaseable capacity of the unit according to the last distribution value of the output power of each generator set and the adjustable range; Step S307, determine Whether the load value is greater than 0; if the load value is greater than 0, then go to step S308 to determine whether the unit's capacity increase is greater than the absolute value of the load value; otherwise, go to step S309 to determine whether the unit's capacity reduction is greater than the absolute value of the load value; when the unit's capacity increase is greater than the absolute value of the load value, go to step S310 to distribute the load value in descending order; when the unit's capacity increase is less than the absolute value of the load value, go to step S311 to evenly distribute the load value to each generator set; when the unit's capacity reduction is greater than the absolute value of the load value, go to step S312 to distribute the load value in descending order; when the unit's capacity reduction is greater than the absolute value of the load value, go to step S313 to evenly distribute the load value to each generator set.

[0110] In this embodiment, the load value is obtained based on the current scheduling setting value and the previous scheduling setting value; if the load value is within the small load setting value range, the level of each generator set is obtained based on the adjustable capacity of each generator set with respect to the output power; based on the previous allocation value of each generator set with respect to the output power and the adjustable range, the sum of the increaseable capacity of the unit and the sum of the decreaseable capacity of the unit are obtained; the load value is allocated according to the level of each generator set to obtain the current allocation value of each generator set, thereby completing the primary allocation of the small load; the adjustment logic of the automatic power generation control system is optimized, and the adjustment rate and adjustment accuracy of the automatic power generation control system are improved to meet the scheduling requirements.

[0111] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0112] Based on the same inventive concept, embodiments of the present application also provide a load regulation device for an automatic power generation control system for implementing the aforementioned load regulation method for the automatic power generation control system. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of one or more embodiments of the load regulation device for an automatic power generation control system provided below can be found in the aforementioned limitations of the load regulation method for the automatic power generation control system, and will not be further elaborated here.

[0113] In an exemplary embodiment, as shown in FIG4 , a load adjustment device for an automatic power generation control system is provided, wherein:

[0114] The load value acquisition module 401 is used to obtain the load value according to the current scheduling setting value and the previous scheduling setting value;

[0115] A level acquisition module 402 is configured to obtain the level of each generator set based on the adjustable capacity of each generator set with respect to output power if the load value is within the minimum load setting value range; wherein the larger the adjustable capacity, the higher the level;

[0116] The capacity sum acquisition module 403 is configured to obtain the sum of the increaseable capacity and the sum of the decreaseable capacity of the generator sets according to the last allocated value of the output power of each generator set and the adjustable range;

[0117] A primary allocation module 404 is configured to allocate the load values ​​in descending order of levels to obtain a current allocation value for each generator set when the current scheduling set value is greater than the previous scheduling set value and the sum of the units' incremental capacities is greater than the load value;

[0118] The primary allocation module 404 is further configured to allocate the load values ​​in descending order to obtain a current allocation value for each generator set when the current scheduling setting value is less than the previous scheduling setting value and the sum of the units' decrementable capacities is greater than the load value;

[0119] The secondary distribution module 405 is used to adjust the current distribution values ​​of several generator sets driven by the same pressure regulating well if the current distribution values ​​of the several generator sets are inconsistent in their proximity to the boundary value of the adjustable interval, so that the current distribution values ​​of the several generator sets after adjustment are consistent in their proximity to the boundary value of the adjustable interval.

[0120] In one embodiment, the device also includes an adjustable capacity acquisition module, which is used to: obtain the subtraction results of each generator set based on the maximum output and active power value of each generator set under the current water head; if the subtraction result of one of the generator sets is greater than the adjustable capacity of the pressure regulating well where one of the generator sets is located with respect to output power, then the adjustable capacity of the pressure regulating well where one of the generator sets is located with respect to output power is used as the adjustable capacity of the output power of one of the generator sets; if the subtraction result of one of the generator sets is less than the adjustable capacity of the pressure regulating well where one of the generator sets is located with respect to output power, then the subtraction result of one of the generator sets is used as the adjustable capacity of the output power of one of the generator sets.

[0121] In one embodiment, the capacity and acquisition module 403 is further used to: obtain the increaseable capacity of each generator set with respect to the output power based on the last allocated value of the output power of each generator set and the boundary value of the adjustable interval; obtain the sum of the increaseable capacities of the units based on the increaseable capacity of the output power of each generator set; obtain the decreaseable capacity of each generator set with respect to the output power based on the last allocated value of the output power of each generator set and the boundary value of the adjustable interval; obtain the sum of the decreaseable capacities of the units based on the decreaseable capacity of the output power of each generator set.

[0122] In one embodiment, the primary allocation module 404 is further used to: if the output power increase capacity of the highest-level generator group is greater than the load value, then allocate all of the load value to the highest-level generator group; if the output power increase capacity of the highest-level generator group is less than the load value, then first allocate part of the load value to the highest-level generator group, so that the current allocation value of the highest-level generator group is the upper boundary value of the adjustable range of the highest-level generator group; and then allocate the remaining part of the load value to the second-highest-level generator group.

[0123] In one embodiment, the primary allocation module 404 is further used to: if the reducible capacity of the highest-level generator group with respect to output power is greater than the load value, then allocate all of the load value to the highest-level generator group; if the reducible capacity of the highest-level generator group with respect to output power is less than the load value, then first allocate part of the load value to the highest-level generator group, so that the current allocation value of the highest-level generator group is the lower boundary value of the adjustable range of the highest-level generator group; and then allocate the remaining part of the load value to the second-highest-level generator group.

[0124] In one embodiment, the secondary distribution module 405 is also used to: when the current distribution values ​​of the several generator sets driven by the same pressure-regulating well are inconsistent in their proximity to the upper boundary value of the adjustable range, determine the target generator set whose current distribution value is closer to the upper boundary value of the adjustable range; and reduce the current distribution value of the target generator set and increase the current distribution values ​​of other generator sets according to the increase set amount, so that the current distribution values ​​of the several generator sets after adjustment are consistent in their proximity to the boundary value of the adjustable range.

[0125] In one embodiment, the secondary distribution module 405 is also used to: when the current distribution values ​​of the several generator sets driven by the same pressure-regulating well are inconsistent in their proximity to the lower boundary value of the adjustable range, determine the target generator set whose current distribution value is closer to the lower boundary value of the adjustable range; increase the current distribution value of the target generator set and reduce the current distribution values ​​of other generator sets according to the set reduction amount, so that the current distribution values ​​of the several generator sets after adjustment are consistent in their proximity to the boundary value of the adjustable range.

[0126] Each module in the load regulation device of the automatic power generation control system described above can be implemented in whole or in part through software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in the automatic power generation control system in hardware form, or can be stored in memory in the automatic power generation control system in software form, so that the processor can call and execute the corresponding operations of each module.

[0127] In an exemplary embodiment, an automatic power generation control system is provided, the internal structure of which may be shown in FIG5 . The automatic power generation control system includes a processor, memory, an input / output (I / O) interface, and a communication interface. The processor, memory, and I / O interface are connected via a system bus, and the communication interface is connected to the system bus via the I / O interface. The processor of the automatic power generation control system provides computing and control capabilities. The memory of the automatic power generation control system includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operating system and computer program in the non-volatile storage medium. The database of the automatic power generation control system stores data generated during load regulation. The I / O interface of the automatic power generation control system is used to exchange information between the processor and external devices. The communication interface of the automatic power generation control system is used to communicate with external terminals via a network connection. When executed by the processor, the computer program implements a load regulation method for the automatic power generation control system.

[0128] Those skilled in the art will understand that the structure shown in FIG5 is merely a block diagram of a portion of the structure related to the solution of the present application, and does not constitute a limitation on the automatic power generation control system to which the solution of the present application is applied. The specific automatic power generation control system may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0129] In one embodiment, an automatic power generation control system is further provided, comprising a memory and a processor. The memory stores a computer program, and the processor implements the steps in the above method embodiments when executing the computer program.

[0130] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0131] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0132] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0133] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory may include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processor involved in the various embodiments provided herein may be, but are not limited to, a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, and the like.

[0134] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0135] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A load regulation method for an automatic power generation control system, characterized in that, the method includes: Obtaining a load value based on the current scheduling set value and the previous scheduling set value; If the load value is within the small load set value range, obtaining the levels of the generator sets according to the adjustable capacities of the generator sets with respect to the output power; wherein, the larger the adjustable capacity, the higher the level; Obtaining the sum of the capacity that the generator sets can increase and the sum of the capacity that the generator sets can decrease according to the previous allocation values of the generator sets with respect to the output power and the adjustable range; In the case where the current scheduling set value is greater than the previous scheduling set value, if the sum of the capacity that the generator sets can increase is greater than the load value, allocating the load value in descending order of level to obtain the current allocation values of the generator sets; In the case where the current scheduling set value is less than the previous scheduling set value, if the sum of the capacity that the generator sets can decrease is greater than the load value, allocating the load value in descending order of level to obtain the current allocation values of the generator sets; If the degrees of proximity of the current allocation values of several generator sets driven by the same pressure regulating well to the boundary values of the adjustable range are inconsistent, adjusting the current allocation values of the several generator sets so that the degrees of proximity of the adjusted current allocation values of the several generator sets to the boundary values of the adjustable range are consistent.

2. The method according to claim 1, characterized in that, Before obtaining the levels of the generator sets according to the adjustable capacities of the generator sets with respect to the output power, the method further includes: Obtaining the subtraction results of the generator sets according to the maximum output power and the actual active power generation value of each generator set under the current head; If the subtraction result of one of the generator sets is greater than the adjustable capacity of the pressure regulating well where the one generator set is located with respect to the output power, taking the adjustable capacity of the pressure regulating well where the one generator set is located with respect to the output power as the adjustable capacity of the one generator set with respect to the output power; If the subtraction result of one of the generator sets is less than the adjustable capacity of the pressure regulating well where the one generator set is located with respect to the output power, taking the subtraction result of the one generator set as the adjustable capacity of the one generator set with respect to the output power.

3. The method according to claim 1, characterized in that, The obtaining the sum of the capacity that the generator sets can increase and the sum of the capacity that the generator sets can decrease according to the previous allocation values of the generator sets with respect to the output power and the adjustable range includes: Obtaining the capacity that each generator set can increase with respect to the output power according to the previous allocation value of each generator set with respect to the output power and the boundary value of the adjustable range; Obtaining the sum of the capacity that the generator sets can increase according to the capacity that each generator set can increase with respect to the output power; Obtaining the capacity that each generator set can decrease with respect to the output power according to the previous allocation value of each generator set with respect to the output power and the boundary value of the adjustable range; Obtaining the sum of the capacity that the generator sets can decrease according to the capacity that each generator set can decrease with respect to the output power.

4. The method according to claim 1, characterized in that, The allocating the load value in descending order of level includes: If the capacity increase of the generator set with the highest level regarding the output power is greater than the load value, then allocate the entire load value to the generator set with the highest level; If the capacity increase of the generator set with the highest level regarding the output power is less than the load value, first allocate a part of the load value to the generator set with the highest level so that the current allocation value of the generator set with the highest level is the upper boundary value of the adjustable range of the generator set with the highest level; then allocate the remaining part of the load value to the generator set with the second highest level.

5. The method according to claim 1, wherein, allocating the load value in the order from the highest level to the lowest level includes: If the capacity decrease of the generator set with the highest level regarding the output power is greater than the load value, then allocate the entire load value to the generator set with the highest level; If the capacity decrease of the generator set with the highest level regarding the output power is less than the load value, first allocate a part of the load value to the generator set with the highest level so that the current allocation value of the generator set with the highest level is the lower boundary value of the adjustable range of the generator set with the highest level; then allocate the remaining part of the load value to the generator set with the second highest level.

6. The method according to claim 1, wherein, if the proximity degrees of the current allocation values of several generator sets driven by the same surge shaft to the boundary values of the adjustable range are inconsistent, then adjust the current allocation values of the several generator sets so that the proximity degrees of the adjusted current allocation values of the several generator sets to the boundary values of the adjustable range are consistent, including: When the proximity degrees of the current allocation values of the several generator sets driven by the same surge shaft to the upper boundary value of the adjustable range are inconsistent, determine the target generator set with a large proximity degree of the current allocation value to the upper boundary value of the adjustable range; Increase the set amount, decrease the current allocation value of the target generator set and increase the current allocation values of other generator sets so that the proximity degrees of the adjusted current allocation values of the several generator sets to the boundary values of the adjustable range are consistent.

7. The method according to claim 1, wherein, if the proximity degrees of the current allocation values of several generator sets driven by the same surge shaft to the boundary values of the adjustable range are inconsistent, then adjust the current allocation values of the several generator sets so that the proximity degrees of the adjusted current allocation values of the several generator sets to the boundary values of the adjustable range are consistent, including: When the proximity degrees of the current allocation values of the several generator sets driven by the same surge shaft to the lower boundary value of the adjustable range are inconsistent, determine the target generator set with a large proximity degree of the current allocation value to the lower boundary value of the adjustable range; Decrease the set amount, increase the current allocation value of the target generator set and decrease the current allocation values of other generator sets so that the proximity degrees of the adjusted current allocation values of the several generator sets to the boundary values of the adjustable range are consistent.

8. A load regulating device for an automatic generation control system, wherein, the device includes: ​ A load value acquisition module, configured to obtain a load value according to the current scheduling set value and the previous scheduling set value; A level acquisition module, configured to, if the load value is within the small load set value range, obtain the levels of the generator sets according to the adjustable capacities of the generator sets with respect to the output power; wherein, the larger the adjustable capacity, the higher the level; A capacity sum acquisition module, configured to obtain the sum of the capacity that the generator sets can increase and the sum of the capacity that the generator sets can decrease according to the previous allocation values of the generator sets with respect to the output power and the adjustable range; A primary allocation module, configured to, when the current scheduling set value is greater than the previous scheduling set value, if the sum of the capacity that the generator sets can increase is greater than the load value, allocate the load value in the order from the highest level to the lowest level to obtain the current allocation values of the generator sets; The primary allocation module is further configured to, when the current scheduling set value is less than the previous scheduling set value, if the sum of the capacity that the generator sets can decrease is greater than the load value, allocate the load value in the order from the highest level to the lowest level to obtain the current allocation values of the generator sets; A secondary allocation module, configured to, if the degrees of proximity of the current allocation values of several generator sets driven by the same surge shaft to the boundary values of the adjustable range are inconsistent, adjust the current allocation values of the several generator sets so that the degrees of proximity of the adjusted current allocation values of the several generator sets to the boundary values of the adjustable range are consistent.

9. An automatic generation control system, including a memory and a processor, where the memory stores a computer program, characterized in that, when the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium, on which a computer program is stored, characterized in that, when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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