Frequency adjustment method, device, equipment and storage medium

Abstract

The present invention discloses a frequency regulation method, device, equipment and storage medium, which relates to the field of power electronics technology and is applied to each generator set constituting a power generation system. The method includes: obtaining the current power generation frequency of the power generation system; when it is determined that the current power generation frequency exceeds a preset frequency range, after the waiting period ends, obtaining the waiting power generation frequency of the power generation system, the waiting period is determined according to the number of the generator set; when it is determined that the waiting power generation frequency exceeds the preset frequency range, frequency regulation of the generator set according to a reference frequency, the reference frequency is determined according to the frequency regulation capability of each generator set. The above technical solution determines the order in which each generator set regulates the frequency of the power generation system according to the number of each generator set, thereby realizing staged regulation of the frequency of the power generation system. In addition, there is no need for communication between the generator sets, thereby avoiding the influence of communication facilities on the frequency regulation of the power generation system and improving the regulation effect.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of power electronics technology, and in particular to a frequency regulation method, apparatus, device, and storage medium. Background Art

[0002] As an important renewable energy source, hydropower has experienced rapid growth in recent years. However, due to fluctuations in water flow and load, the frequency of hydropower systems fluctuates frequently and erratically. Frequency stability is crucial for ensuring a secure and reliable power supply. To prevent frequency fluctuations from impacting the normal operation of user equipment, frequency regulation of hydropower systems is essential.

[0003] In the prior art, one generator set in a hydropower system can be used as a master control node, and the other generator sets can be used as slave control nodes. The master control node controls the slave control nodes to achieve frequency regulation of the hydropower system.

[0004] However, the control of the slave nodes by the master node depends on the communication between the master node and the slave nodes. The communication effect between the master node and the slave nodes is easily restricted by the communication facilities. Therefore, the frequency adjustment effect is not good. Summary of the Invention

[0005] The present invention provides a frequency regulation method, device, equipment and storage medium, which can realize frequency regulation of a power generation system without relying on other hardware facilities.

[0006] In a first aspect, an embodiment of the present invention provides a frequency regulation method, which is applied to each generator set constituting a power generation system. The method includes:

[0007] Obtain the current power generation frequency of the power generation system;

[0008] When it is determined that the current power generation frequency exceeds a preset frequency range, after a waiting period ends, obtaining a waiting power generation frequency of the power generation system, wherein the waiting period is determined according to the number of the generator set;

[0009] When it is determined that the waiting power generation frequency exceeds the preset frequency range, the generator set is frequency-regulated according to a reference frequency, wherein the reference frequency is determined according to the frequency regulation capability of each of the generator sets.

[0010] The technical solution of an embodiment of the present invention provides a frequency regulation method for a power generation system, which is applied to each generator set constituting the power generation system. The method comprises: obtaining the current power generation frequency of the power generation system; if it is determined that the current power generation frequency exceeds a preset frequency range, obtaining the waiting power generation frequency of the power generation system after a waiting period ends, wherein the waiting period is determined based on the number of the generator set; if it is determined that the waiting power generation frequency exceeds the preset frequency range, frequency regulating the generator set according to a reference frequency, wherein the reference frequency is determined based on the frequency regulation capability of each generator set. In the above technical solution, each generator set constituting the power generation system obtains the current power generation frequency of the power generation system in real time, determines whether the current power generation frequency exceeds the preset frequency range by comparing the current power generation frequency with the upper and lower frequency limits of the preset frequency range, enters a waiting period if it is determined that the current power generation frequency exceeds the preset frequency range, and after the waiting period ends, continues to obtain the waiting power generation frequency of the power generation system, determines whether the waiting power generation frequency exceeds the preset frequency range by comparing the waiting power generation frequency with the upper and lower frequency limits of the preset frequency range, and frequency regulates the generator set according to the reference frequency if it is determined that the waiting power generation frequency exceeds the preset frequency range. When it is determined that the current power generation frequency and the waiting power generation frequency after the waiting period determined according to the number of the generator set are both outside the preset frequency range, the generator set is frequency-regulated, and the power generation system is further frequency-regulated, so that the order in which each generator set adjusts the frequency of the power generation system is determined according to the number of each generator set, and the frequency of the power generation system is adjusted in stages. In addition, there is no need for communication between the generator sets, thereby avoiding the influence of communication facilities on the frequency adjustment of the power generation system and improving the adjustment effect.

[0011] Furthermore, obtaining the current power generation frequency of the power generation system includes:

[0012] The current power generation frequency of the power generation system is obtained based on a frequency monitor installed on the power generator set.

[0013] Furthermore, it also includes:

[0014] Determine the response time of each of the generator sets, and determine a basic adjustment period according to each of the response times and a first preset time;

[0015] The waiting period of each of the generator sets is determined according to the number of each of the generator sets and the basic adjustment period.

[0016] Furthermore, determining a basic adjustment period according to each of the response times and the first preset time includes:

[0017] If all the response times are less than the first preset time, the maximum response time is determined as the basic adjustment period; otherwise, the first preset time is determined as the basic adjustment period.

[0018] Furthermore, determining the waiting period of each of the generator sets according to the number of each of the generator sets and the basic adjustment period includes:

[0019] When it is determined that the number of the generator set is 1, the waiting period is determined to be 0;

[0020] When it is determined that the number of the generator set is not 1, an initial adjustment period is determined according to the basic adjustment period and the time deviation, and the waiting period is determined according to the initial adjustment period, the number and the basic adjustment period.

[0021] Furthermore, when it is determined that the waiting power generation frequency exceeds the preset frequency range, the frequency of the generator set is adjusted according to the reference frequency, including:

[0022] When it is determined that the waiting power generation frequency is less than a lower frequency limit of the preset frequency range, increasing the frequency of the generator set based on the reference frequency;

[0023] When it is determined that the waiting power generation frequency is greater than the upper frequency limit of the preset frequency range, the frequency of the generator set is lowered based on the reference frequency.

[0024] Furthermore, after the frequency of the generator set is adjusted according to the reference frequency, the method further includes:

[0025] After the second preset time, the process returns to the step of obtaining the current power generation frequency of the power generation system.

[0026] In a second aspect, an embodiment of the present invention further provides a frequency regulating device, which is mounted on each generator set constituting a power generation system, and includes:

[0027] An acquisition module, used to obtain the current power generation frequency of the power generation system;

[0028] an execution module, configured to, if it is determined that the current power generation frequency exceeds a preset frequency range, obtain a waiting power generation frequency of the power generation system after a waiting period ends, wherein the waiting period is determined according to the number of the generator set;

[0029] The frequency regulation module is used to regulate the frequency of the generator set according to a reference frequency when it is determined that the waiting power generation frequency exceeds the preset frequency range, wherein the reference frequency is determined according to the frequency regulation capability of each of the generator sets.

[0030] In a third aspect, an embodiment of the present invention further provides an electronic device, comprising:

[0031] at least one processor; and a memory communicatively coupled to the at least one processor;

[0032] The memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can perform the frequency adjustment method as described in any one of the first aspects.

[0033] In a fourth aspect, an embodiment of the present invention further provides a storage medium comprising computer-executable instructions, wherein the computer-executable instructions, when executed by a computer processor, are used to perform the frequency adjustment method as described in any one of the first aspects.

[0034] In a fifth aspect, the present application provides a computer program product, which includes computer instructions. When the computer instructions are executed on a computer, the computer executes the frequency adjustment method provided in the first aspect.

[0035] It should be noted that the above-mentioned computer instructions may be stored in whole or in part on a computer-readable storage medium. The computer-readable storage medium may be packaged together with the processor of the frequency adjustment device or separately from the processor of the frequency adjustment device, and this application does not limit this.

[0036] The descriptions of the second, third, fourth and fifth aspects of this application can refer to the detailed description of the first aspect; and the beneficial effects of the descriptions of the second, third, fourth and fifth aspects can refer to the analysis of the beneficial effects of the first aspect, which will not be repeated here.

[0037] In this application, the name of the frequency regulating device does not limit the device or functional module itself. In actual implementation, these devices or functional modules may appear with other names. As long as the functions of each device or functional module are similar to those of this application, they are within the scope of the claims of this application and their equivalents.

[0038] These and other aspects of the present application will become more readily apparent from the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 A flow chart of a frequency adjustment method provided by an embodiment of the present invention;

[0041] Figure 2 A flow chart of another frequency adjustment method provided by an embodiment of the present invention;

[0042] Figure 3 A flowchart of another frequency adjustment method provided in an embodiment of the present invention;

[0043] Figure 4 A schematic structural diagram of a frequency adjustment device provided in an embodiment of the present invention;

[0044] Figure 5 A schematic structural diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0045] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0046] The term "and / or" in this article is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0047] The terms "first" and "second" and the like in the specification and drawings of this application are used to distinguish different objects, or to distinguish different processing of the same object, rather than to describe a specific order of objects.

[0048] Furthermore, the terms "including," "having," and any variations thereof, as used in the description of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not limited to the listed steps or units but may optionally include other steps or units not listed, or may optionally include other steps or units inherent to the process, method, product, or apparatus.

[0049] It should be mentioned before discussing exemplary embodiments in more detail that some exemplary embodiments are described as processes or methods depicted as flow charts. Although flow charts describe various operations (or steps) as sequential processes, many operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of various operations can be rearranged. When its operation is completed, the process can be terminated, but can also have additional steps not included in the accompanying drawings. The process can correspond to methods, functions, procedures, subroutines, subprograms, etc. In addition, the features in the embodiments of the present invention and the embodiments can be combined with each other without conflict.

[0050] It should be noted that in the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being more preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0051] In the description of the present application, unless otherwise specified, “plurality” means two or more.

[0052] Figure 1 This is a flow chart of a frequency regulation method provided in an embodiment of the present invention. This embodiment is applicable to situations where the frequency of a hydropower system needs to be regulated. The method is applied to each generator set constituting the power generation system. The method can be executed by a frequency regulation device, such as Figure 1 As shown, the specific steps include:

[0053] Step 110: Acquire the current power generation frequency of the power generation system.

[0054] The power generation system can be a hydropower system, consisting of multiple generator sets. Each generator set is numbered from largest to smallest according to its rated capacity. The order of the numbers dictates the frequency adjustment order of the generator sets during frequency fluctuations. The numbers can be 1, 2, 3, ..., n, where n is the number of generator sets in the power generation system. When a new generator set is added to the power generation system, it is numbered starting with n+1.

[0055] Specifically, each generator set constituting the power generation system is equipped with a frequency monitor. Therefore, for a current generator set, the current power generation frequency of the power generation system can be obtained based on the frequency monitor equipped on the current generator set.

[0056] In the embodiment of the present invention, real-time monitoring of the current power generation frequency of the power generation system is achieved.

[0057] Step 120: When it is determined that the current power generation frequency exceeds a preset frequency range, after the waiting period ends, obtain the waiting power generation frequency of the power generation system.

[0058] The waiting period is determined according to the number of the generator set.

[0059] The preset frequency range can be understood as a frequency range that ensures normal operation of the electrical equipment powered by the power generation system. For example, with 50 Hz as the reference frequency and a 0.5 Hz margin, the preset frequency range can be 49.5 Hz to 50.5 Hz. If the current power generation frequency f satisfies 49.5 Hz ≤ f ≤ 50.5 Hz, it is determined that the current power generation frequency does not exceed the preset frequency range. Otherwise, it is determined that the current power generation frequency exceeds the preset frequency range.

[0060] Specifically, if it is determined that the current power generation frequency exceeds a preset frequency range, the frequency of the power generation system needs to be adjusted. For the generator sets that comprise the power generation system, the frequency of the power generation system is adjusted based on a successive adjustment mechanism. Specifically, when any generator set determines that the current power generation frequency of the power generation system exceeds the preset frequency range, it randomly enters a waiting period. After determining that the waiting period has expired, it again obtains the waiting power generation frequency of the power generation system. Based on the waiting power generation frequency, it determines whether to adjust the frequency of the power generation system based on that generator set.

[0061] It should be noted that the waiting period is determined according to the number of the generator set, and when the generator set is numbered 1, the waiting period is 0, and when the generator set is numbered otherwise, the waiting period is determined according to the generator set number.

[0062] In an embodiment of the present invention, when it is determined that the current power generation frequency exceeds the preset frequency range, the corresponding waiting period is determined according to the number of each generator set, and the waiting power generation frequency of the power generation system is continued to be obtained after the waiting period ends, providing a data basis for determining whether to adjust the frequency of the power generation system based on each generator set.

[0063] Step 130: When it is determined that the waiting power generation frequency exceeds the preset frequency range, the generator set is frequency-regulated according to a reference frequency.

[0064] The reference frequency is determined according to the frequency regulation capability of each of the generator sets.

[0065] In order to ensure that all generator sets can participate in the frequency regulation of the power generation system, the reference frequency may be the lower limit of the frequency regulation capability of all generator sets.

[0066] Specifically, if it is determined that the waiting power generation frequency exceeds the preset frequency range, it indicates that the frequency of the power generation system needs to be adjusted based on the generator set. In this case, the generator set can be frequency-regulated according to the reference frequency, thereby achieving frequency adjustment of the power generation system.

[0067] It should be noted that the waiting period of the generator set numbered 1 is 0, that is, when the generator set numbered 1 determines that the current power generation frequency exceeds the preset frequency range, it can immediately adjust the frequency of the generator set according to the reference frequency, thereby realizing frequency regulation of the power generation system.

[0068] In the embodiment of the present invention, based on the successive adjustment mechanism, the order in which the generator sets adjust the frequency of the power generation system is determined according to the numbers of the generator sets, thereby achieving phased adjustment of the frequency of the power generation system.

[0069] The frequency regulation method provided in an embodiment of the present invention is applied to each generator set constituting a power generation system. The method comprises: obtaining the current power generation frequency of the power generation system; if it is determined that the current power generation frequency exceeds a preset frequency range, obtaining the waiting power generation frequency of the power generation system after a waiting period ends, wherein the waiting period is determined based on the number of the generator set; if it is determined that the waiting power generation frequency exceeds the preset frequency range, frequency regulating the generator set according to a reference frequency, wherein the reference frequency is determined based on the frequency regulation capability of each generator set. In the above technical solution, each generator set constituting the power generation system obtains the current power generation frequency of the power generation system in real time, determines whether the current power generation frequency exceeds the preset frequency range by comparing the current power generation frequency with the upper and lower frequency limits of the preset frequency range, enters a waiting period if it is determined that the current power generation frequency exceeds the preset frequency range, and after the waiting period ends, continues to obtain the waiting power generation frequency of the power generation system, determines whether the waiting power generation frequency exceeds the preset frequency range by comparing the waiting power generation frequency with the upper and lower frequency limits of the preset frequency range, and frequency regulates the generator set according to the reference frequency if it is determined that the waiting power generation frequency exceeds the preset frequency range. When it is determined that the current power generation frequency and the waiting power generation frequency after the waiting period determined according to the number of the generator set are both outside the preset frequency range, the generator set is frequency-regulated, and the power generation system is further frequency-regulated, so that the order in which each generator set adjusts the frequency of the power generation system is determined according to the number of each generator set, and the frequency of the power generation system is adjusted in stages. In addition, there is no need for communication between the generator sets, thereby avoiding the influence of communication facilities on the frequency adjustment of the power generation system and improving the adjustment effect.

[0070] Figure 2 This is a flow chart of another frequency adjustment method provided by an embodiment of the present invention. This embodiment is specific based on the above embodiment. Figure 2 As shown, in this embodiment, the method may further include:

[0071] Step 210: Determine the response time of each of the generator sets, and determine a basic adjustment period according to each of the response times and a first preset time.

[0072] In one implementation, step 210 may specifically include:

[0073] If all the response times are less than the first preset time, the maximum response time is determined as the basic adjustment period; otherwise, the first preset time is determined as the basic adjustment period.

[0074] Among them, the response time of the generator set can be understood as the time from the start of frequency regulation to the completion of frequency regulation, which can be determined by performing frequency regulation tests on the generator set. By performing frequency regulation tests on each generator set, the response time t1, t2, t3, ... t n The first preset time may be 4 seconds.

[0075] Specifically, by comparing the response time of each generator set with the first preset time, if it is determined that each response time is less than the first preset time, the maximum response time among the response times can be determined as the basic adjustment period; otherwise, the first preset time is determined as the basic adjustment period.

[0076] In practical applications, the basic adjustment period can be determined based on Formula 1.

[0077]

[0078] Wherein, T represents the basic regulation period.

[0079] In the embodiment of the present invention, the basic regulation period is determined according to the response time of each generator set.

[0080] Step 220: Determine the waiting period of each generator set according to the number of each generator set and the basic adjustment period.

[0081] In one implementation, step 220 may specifically include:

[0082] When it is determined that the number of the generator set is 1, the waiting period is determined to be 0; when it is determined that the number of the generator set is not 1, the initial adjustment period is determined according to the basic adjustment period and the time deviation, and the waiting period is determined according to the initial adjustment period, the number and the basic adjustment period.

[0083] Among them, the time deviation can be understood as the frequency regulation lag time and frequency rise time of the generator set numbered 1, and the initial regulation period can be understood as the regulation period of the generator set numbered 1. In practical applications, the initial regulation period T0 = T+2s can be determined.

[0084] Specifically, when the generator set is numbered 1, its waiting period can be determined to be 0. When the generator set is numbered not 1, the initial adjustment period can be determined based on the adjustment period and time deviation, and the waiting period can be determined based on the initial adjustment period, number and adjustment period.

[0085] In practical applications, the waiting period can be determined based on Formula 2.

[0086]

[0087] Wherein, Z represents the waiting period, and i represents the number of the generator set.

[0088] In the embodiment of the present invention, the waiting period of each generator set is determined according to the number of each generator set and the basic adjustment period.

[0089] Step 230: Acquire the current power generation frequency of the power generation system.

[0090] In one implementation, step 230 may specifically include:

[0091] The current power generation frequency of the power generation system is obtained based on a frequency monitor installed on the power generator set.

[0092] As mentioned above, the current power generation frequency of the power generation system may be obtained based on the frequency monitor installed on the power generation set.

[0093] In the embodiment of the present invention, real-time monitoring of the current power generation frequency of the power generation system is achieved.

[0094] Step 240: When it is determined that the current power generation frequency exceeds the preset frequency range, after the waiting period ends, obtain the waiting power generation frequency of the power generation system.

[0095] The waiting period is determined according to the number of the generator set.

[0096] Specifically, the current power generation frequency is compared with the upper frequency limit and the lower frequency limit of the preset frequency range. If the current power generation frequency is greater than the upper frequency limit of the preset frequency range, or the current power generation frequency is less than the lower frequency limit of the preset frequency range, it is determined that the current power generation frequency exceeds the preset frequency range; otherwise, it is determined that the current power generation frequency does not exceed the preset frequency range.

[0097] When it is determined that the current power generation frequency exceeds the preset frequency range, a waiting period is randomly entered, and after it is determined that the waiting period is over, the waiting power generation frequency of the power generation system is acquired again.

[0098] Step 250: When it is determined that the waiting power generation frequency exceeds the preset frequency range, the generator set is frequency-regulated according to the reference frequency.

[0099] The reference frequency is determined according to the frequency regulation capability of each of the generator sets.

[0100] In one implementation, step 250 may specifically include:

[0101] When it is determined that the waiting power generation frequency is less than the lower frequency limit of the preset frequency range, the frequency of the generator set is increased based on the reference frequency; when it is determined that the waiting power generation frequency is greater than the upper frequency limit of the preset frequency range, the frequency of the generator set is decreased based on the reference frequency.

[0102] Specifically, after obtaining the waiting power generation frequency, the waiting power generation frequency can be compared with the frequency upper limit and frequency lower limit of the preset frequency range. If the waiting power generation frequency is greater than the frequency upper limit of the preset frequency range, or the waiting power generation frequency is less than the frequency lower limit of the preset frequency range, it is determined that the waiting power generation frequency exceeds the preset frequency range; otherwise, it is determined that the waiting power generation frequency does not exceed the preset frequency range.

[0103] When it is determined that the waiting power generation frequency exceeds the preset frequency range, the generator set can be frequency-regulated according to the reference frequency. Specifically, when it is determined that the waiting power generation frequency is less than the lower frequency limit of the preset frequency range, the frequency of the generator set is increased based on the reference frequency; when it is determined that the waiting power generation frequency is greater than the upper frequency limit of the preset frequency range, the frequency of the generator set is lowered based on the reference frequency, thereby achieving frequency regulation of the generator set and further achieving frequency regulation of the power generation system.

[0104] In this embodiment of the present invention, the order in which each generator set adjusts the power generation system frequency is determined based on its serial number, enabling phased frequency adjustment of the power generation system. Furthermore, by rotating the frequency adjustment of the power generation system by multiple generator sets, not only is the response rapid, but after multiple rounds of adjustment, the power generation system frequency can always be restored to a normal range, thus avoiding situations where a single generator set has insufficient frequency adjustment capability.

[0105] Step 260: After the second preset time, return to execute obtaining the current power generation frequency of the power generation system.

[0106] Frequency regulation of the generator set is delayed. Due to the lag time caused by inertia, the current power generation frequency obtained immediately after frequency regulation has not yet been adjusted. Therefore, it is possible to wait for a second preset time before obtaining the current power generation frequency to continue frequency monitoring of the power generation system. The second preset time can be set according to actual needs, for example, it can be set to 8 seconds.

[0107] Specifically, after the frequency of the generator set is adjusted, after waiting for the second preset time, the process returns to executing the acquisition of the current power generation frequency of the power generation system to continue frequency monitoring of the power generation system.

[0108] In the embodiment of the present invention, by returning to execute obtaining the current power generation frequency of the power generation system after the second preset time, repeated adjustment of the power generation system frequency by the same generator set is avoided.

[0109] The frequency regulation method provided by an embodiment of the present invention includes: determining the response time of each generator set, determining a basic regulation period based on each response time and a first preset time; determining a waiting period for each generator set based on the number of each generator set and the basic regulation period; obtaining the current generation frequency of the power generation system; if it is determined that the current generation frequency exceeds a preset frequency range, after the waiting period ends, obtaining the waiting generation frequency of the power generation system; if it is determined that the waiting generation frequency exceeds the preset frequency range, frequency-regulating the generator set according to a reference frequency; after a second preset time, returning to the process of obtaining the current generation frequency of the power generation system. In the above technical solution, each generator set constituting the power generation system obtains the current generation frequency of the power generation system in real time, determines whether the current generation frequency exceeds the preset frequency range by comparing the current generation frequency with the upper and lower frequency limits of the preset frequency range, enters a waiting period if it is determined that the current generation frequency exceeds the preset frequency range, and continues to obtain the waiting generation frequency of the power generation system after the waiting period ends, determines whether the waiting generation frequency exceeds the preset frequency range by comparing the waiting generation frequency with the upper and lower frequency limits of the preset frequency range, and frequency-regulating the generator set according to the reference frequency if it is determined that the waiting generation frequency exceeds the preset frequency range. When it is determined that the current power generation frequency and the waiting power generation frequency after the waiting period determined according to the number of the generator set are both out of the preset frequency range, the generator set is frequency-regulated, and the power generation system is further frequency-regulated. The order in which each generator set adjusts the frequency of the power generation system is determined according to the number of each generator set, and the frequency of the power generation system is adjusted in stages. By setting a waiting period for the generator set, the generator sets can stagger the frequency of the power generation system without communication, thereby reducing the overlap of frequency regulation. The secondary frequency measurement operation of multiple generator sets is used to determine whether the current generator set is adjusted, and to verify the adjustment effect of other generator sets, which can prevent insufficient adjustment.

[0110] In addition, there is no need for communication between generator sets, which avoids the impact of communication facilities on the frequency regulation of the power generation system and improves the regulation effect.

[0111] Figure 3 The flowchart of another frequency adjustment method provided in the embodiment of the present invention exemplifies one of the implementation methods. Figure 3 As shown,

[0112] Step 310: Acquire the current power generation frequency of the power generation system.

[0113] Step 320: Determine whether the current power generation frequency exceeds a preset frequency range.

[0114] If it is determined that the current power generation frequency exceeds the preset frequency range, step 330 is executed; otherwise, the process returns to step 310 .

[0115] Step 330: Enter a waiting period, and obtain the waiting power generation frequency of the power generation system after the waiting period.

[0116] Step 340: Determine whether the waiting power generation frequency exceeds a preset frequency range.

[0117] If it is determined that the current power generation frequency exceeds the preset frequency range, step 350 is executed; otherwise, the process returns to step 310 .

[0118] Step 350: Determine whether the waiting power generation frequency is less than the lower limit of the preset frequency range.

[0119] If it is determined that the waiting power generation frequency is less than the lower frequency limit of the preset frequency range, step 360 is executed; otherwise, step 370 is executed.

[0120] Step 360: Increase the frequency of the generator set based on the reference frequency.

[0121] Step 370: Lower the frequency of the generator set based on the reference frequency.

[0122] After a second preset time after executing step 360 or step 370 , the process returns to executing step 310 .

[0123] The implementation of the frequency adjustment method provided in the embodiment of the present invention has the beneficial effect of executing any of the aforementioned frequency adjustment methods.

[0124] Figure 4 This figure shows the structure of a frequency regulation device provided in an embodiment of the present invention. This device is suitable for use in situations where frequency regulation of a hydropower system is required. The device is installed in each generator set that constitutes the power generation system and can be implemented through software and / or hardware, and is typically integrated into electronic equipment such as a computer.

[0125] like Figure 4 As shown, the device includes:

[0126] An acquisition module 410 is configured to acquire a current power generation frequency of the power generation system;

[0127] An execution module 420 is configured to, when it is determined that the current power generation frequency exceeds a preset frequency range, obtain a waiting power generation frequency of the power generation system after a waiting period ends, wherein the waiting period is determined according to the number of the generator set;

[0128] The frequency regulation module 430 is configured to regulate the frequency of the generator set according to a reference frequency when it is determined that the waiting power generation frequency exceeds the preset frequency range, wherein the reference frequency is determined according to the frequency regulation capability of each generator set.

[0129] The frequency regulation device provided in this embodiment is installed in each generator set constituting a power generation system. The method includes: obtaining the current power generation frequency of the power generation system; if it is determined that the current power generation frequency exceeds a preset frequency range, obtaining the waiting power generation frequency of the power generation system after a waiting period ends, wherein the waiting period is determined based on the number of the generator set; if it is determined that the waiting power generation frequency exceeds the preset frequency range, frequency regulating the generator set according to a reference frequency, wherein the reference frequency is determined based on the frequency regulation capability of each generator set. In the above technical solution, each generator set constituting the power generation system obtains the current power generation frequency of the power generation system in real time, determines whether the current power generation frequency exceeds the preset frequency range by comparing the current power generation frequency with the upper and lower frequency limits of the preset frequency range, enters a waiting period if it is determined that the current power generation frequency exceeds the preset frequency range, and after the waiting period ends, continues to obtain the waiting power generation frequency of the power generation system, determines whether the waiting power generation frequency exceeds the preset frequency range by comparing the waiting power generation frequency with the upper and lower frequency limits of the preset frequency range, and frequency regulates the generator set according to the reference frequency if it is determined that the waiting power generation frequency exceeds the preset frequency range. When it is determined that the current power generation frequency and the waiting power generation frequency after the waiting period determined according to the number of the generator set are both outside the preset frequency range, the generator set is frequency-regulated, and the power generation system is further frequency-regulated, so that the order in which each generator set adjusts the frequency of the power generation system is determined according to the number of each generator set, and the frequency of the power generation system is adjusted in stages. In addition, there is no need for communication between the generator sets, thereby avoiding the influence of communication facilities on the frequency adjustment of the power generation system and improving the adjustment effect.

[0130] Based on the above embodiment, the acquisition module 410 is specifically configured to:

[0131] The current power generation frequency of the power generation system is obtained based on a frequency monitor installed on the power generator set.

[0132] Based on the above embodiment, the device further includes:

[0133] The determination module is used to determine the response time of each generator set, determine the basic adjustment period according to each response time and the first preset time; and determine the waiting period of each generator set according to the number of each generator set and the basic adjustment period.

[0134] In one embodiment, determining a basic adjustment period according to each of the response times and the first preset time includes:

[0135] If all the response times are less than the first preset time, the maximum response time is determined as the basic adjustment period; otherwise, the first preset time is determined as the basic adjustment period.

[0136] In one embodiment, determining the waiting period of each generator set according to the number of each generator set and the basic adjustment period includes:

[0137] When it is determined that the number of the generator set is 1, the waiting period is determined to be 0; when it is determined that the number of the generator set is not 1, the initial adjustment period is determined according to the basic adjustment period and the time deviation, and the waiting period is determined according to the initial adjustment period, the number and the basic adjustment period.

[0138] Based on the above embodiment, the frequency modulation module 430 is specifically configured to:

[0139] When it is determined that the waiting power generation frequency is less than the lower frequency limit of the preset frequency range, the frequency of the generator set is increased based on the reference frequency; when it is determined that the waiting power generation frequency is greater than the upper frequency limit of the preset frequency range, the frequency of the generator set is decreased based on the reference frequency.

[0140] Based on the above embodiment, the device further includes:

[0141] The re-acquisition module is used to return to execute acquisition of the current power generation frequency of the power generation system after a second preset time.

[0142] The frequency adjustment device provided in the embodiment of the present invention can execute the frequency adjustment method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of executing the frequency adjustment method.

[0143] It is worth noting that in the embodiment of the above-mentioned frequency regulation device, the various units and modules included are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0144] Figure 5 A schematic structural diagram of an electronic device provided by an embodiment of the present invention. Figure 5 A block diagram of an exemplary electronic device 5 suitable for implementing embodiments of the present invention is shown. Figure 5The electronic device 5 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0145] like Figure 5 As shown, the electronic device 5 is in the form of a general-purpose computing electronic device. Components of the electronic device 5 may include, but are not limited to, one or more processors or processing units 16, a system memory 28, and a bus 18 connecting various system components (including the system memory 28 and the processing unit 16).

[0146] Bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus architectures. Examples of these architectures include, but are not limited to, an Industry Standard Architecture (ISA) bus, a Micro Channel Architecture (MAC) bus, an Enhanced ISA bus, a Video Electronics Standards Association (VESA) local bus, and a Peripheral Component Interconnect (PCI) bus.

[0147] The electronic device 5 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by the electronic device 5, including volatile and non-volatile media, removable and non-removable media.

[0148] The system memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and / or cache memory 32. The electronic device 5 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, the storage system 34 may be configured to read and write non-removable, non-volatile magnetic media ( Figure 5 Not shown, often called a "hard drive"). Although Figure 5 Not shown, a magnetic disk drive for reading and writing to a removable non-volatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive for reading and writing to a removable non-volatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 via one or more data media interfaces. System memory 28 may include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of various embodiments of the present invention.

[0149] A program / utility 40 having a set (at least one) of program modules 42 may be stored, for example, in system memory 28. Such program modules 42 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may include an implementation of a network environment. Program modules 42 generally perform the functions and / or methods of the embodiments described herein.

[0150] The electronic device 5 may also communicate with one or more external devices 14 (e.g., a keyboard, a pointing device, a display 24, etc.), one or more devices that enable a user to interact with the electronic device 5, and / or any device that enables the electronic device 5 to communicate with one or more other computing devices (e.g., a network card, a modem, etc.). Such communication may be performed via an input / output (I / O) interface 22. Furthermore, the electronic device 5 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) via a network adapter 20. Figure 5 As shown, the network adapter 20 communicates with other modules of the electronic device 5 via the bus 18. Figure 5 Not shown, other hardware and / or software modules may be used in conjunction with the electronic device 5, including but not limited to microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0151] The processing unit 16 executes various functional applications and page displays by running programs stored in the system memory 28, such as implementing the frequency adjustment method provided in an embodiment of the present invention. The method is applied to each generator set constituting a power generation system, including:

[0152] Obtain the current power generation frequency of the power generation system;

[0153] When it is determined that the current power generation frequency exceeds a preset frequency range, after a waiting period ends, obtaining a waiting power generation frequency of the power generation system, wherein the waiting period is determined according to the number of the generator set;

[0154] When it is determined that the waiting power generation frequency exceeds the preset frequency range, the generator set is frequency-regulated according to a reference frequency, wherein the reference frequency is determined according to the frequency regulation capability of each of the generator sets.

[0155] Of course, those skilled in the art will appreciate that the processor may also implement the technical solution of the frequency adjustment method provided in any embodiment of the present invention.

[0156] An embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, for example, a frequency adjustment method provided in an embodiment of the present invention is implemented. The method is applied to each generator set constituting a power generation system, and includes:

[0157] Obtain the current power generation frequency of the power generation system;

[0158] When it is determined that the current power generation frequency exceeds a preset frequency range, after a waiting period ends, obtaining a waiting power generation frequency of the power generation system, wherein the waiting period is determined according to the number of the generator set;

[0159] When it is determined that the waiting power generation frequency exceeds the preset frequency range, the generator set is frequency-regulated according to a reference frequency, wherein the reference frequency is determined according to the frequency regulation capability of each of the generator sets.

[0160] The computer storage medium of the embodiment of the present invention can adopt any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, but not limited to: an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or component, or any combination of the above. More specific examples (non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this document, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, device or device.

[0161] A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0162] Program code embodied on a computer-readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0163] Computer program code for performing the operations of the present invention may be written in one or more programming languages, or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0164] Those skilled in the art will appreciate that the modules or steps of the present invention described above can be implemented using a general-purpose computing device. They can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they can be implemented using program code executable by a computer device, which can then be stored in a storage device and executed by the computing device. Alternatively, they can be fabricated into separate integrated circuit modules, or multiple modules or steps can be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

[0165] In addition, the acquisition, storage, use, and processing of data in the technical solution of the present invention comply with the relevant provisions of national laws and regulations.

[0166] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A frequency adjustment method, characterized in that: Applied to each generator set constituting a power generation system, the method comprises: Obtain the current power generation frequency of the power generation system; Determine a response time of each of the generator sets, and determine a basic adjustment period based on each of the response times and a first preset time; determine a waiting period for each of the generator sets based on the number of each of the generator sets and the basic adjustment period; wherein determining the waiting period for each of the generator sets based on the number of each of the generator sets and the basic adjustment period includes: determining that the waiting period is 0 when the number of the generator set is 1; determining that the number of the generator set is not 1, determining an initial adjustment period based on the basic adjustment period and a time deviation, and determining the waiting period based on the initial adjustment period, the number, and the basic adjustment period; When it is determined that the current power generation frequency exceeds a preset frequency range, after the waiting period ends, obtaining a waiting power generation frequency of the power generation system; When it is determined that the waiting power generation frequency exceeds the preset frequency range, the generator set is frequency-regulated according to a reference frequency, wherein the reference frequency is determined according to the frequency regulation capability of each of the generator sets.

2. The frequency adjustment method according to claim 1, wherein: Get the current power generation frequency of the power generation system, including: The current power generation frequency of the power generation system is obtained based on a frequency monitor installed on the power generator set.

3. The frequency adjustment method according to claim 1, wherein: Determining a basic adjustment period according to each of the response times and the first preset time includes: If all the response times are less than the first preset time, the maximum response time is determined as the basic adjustment period; otherwise, the first preset time is determined as the basic adjustment period.

4. The frequency adjustment method according to claim 1, wherein: When it is determined that the waiting power generation frequency exceeds the preset frequency range, the frequency of the generator set is adjusted according to the reference frequency, including: When it is determined that the waiting power generation frequency is less than a lower limit of the preset frequency range, increasing the frequency of the generator set based on the reference frequency; When it is determined that the waiting power generation frequency is greater than the upper frequency limit of the preset frequency range, the frequency of the generator set is lowered based on the reference frequency.

5. The frequency adjustment method according to claim 1, wherein: After the generator set is frequency-regulated according to the reference frequency, the method further comprises: After the second preset time, the process returns to the step of obtaining the current power generation frequency of the power generation system.

6. A frequency adjustment device, characterized in that: The generator sets installed in the power generation system include: An acquisition module, used to obtain the current power generation frequency of the power generation system; an execution module, configured to determine a response time of each of the generator sets, determine a basic adjustment period based on each of the response times and a first preset time, and determine a waiting period for each of the generator sets based on the number of each of the generator sets and the basic adjustment period; wherein determining the waiting period for each of the generator sets based on the number of each of the generator sets and the basic adjustment period comprises: determining that the waiting period is 0 when the number of the generator set is determined to be 1; determining that the number of the generator set is not 1, determining an initial adjustment period based on the basic adjustment period and a time deviation, and determining the waiting period based on the initial adjustment period, the number, and the basic adjustment period; and obtaining the waiting power generation frequency of the power generation system after the waiting period ends when it is determined that the current power generation frequency exceeds a preset frequency range; The frequency regulation module is used to regulate the frequency of the generator set according to a reference frequency when it is determined that the waiting power generation frequency exceeds the preset frequency range, wherein the reference frequency is determined according to the frequency regulation capability of each of the generator sets.

7. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively coupled to the at least one processor; The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can perform the frequency adjustment method according to any one of claims 1 to 5.

8. A storage medium containing computer-executable instructions, characterized in that: When the computer executable instructions are executed by a computer processor, they are used to perform the frequency adjustment method according to any one of claims 1 to 5.

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