Primary frequency modulation method and device of unit, storage medium and electronic equipment

Abstract

The invention relates to a primary frequency modulation method and device of a unit, a storage medium and electronic equipment, and the method comprises the steps: obtaining a frequency deviation value between the power grid frequency of the unit and a preset reference frequency, and determining a to-be-adjusted initial preset power value of the unit according to the frequency deviation value under the condition that the frequency deviation value meets a preset condition, and determining a target correction coefficient according to the initial preset power value, and adjusting the output power of the unit according to the target correction coefficient so as to adjust the power grid frequency of the unit.

Description

Technical Field

[0001] The present disclosure relates to the technical field of power grids, and in particular to a primary frequency modulation method, device, storage medium and electronic equipment of a unit. Background Art

[0002] With the rapid development of new energy technologies, the stability requirements of power generation and supply units in power systems are becoming higher and higher. The grid frequency is an important operating indicator of power generation and supply units, and the stability of the frequency value affects the safety and efficiency of power generation and supply units. At present, the primary frequency regulation method is usually used to control the grid frequency.

[0003] However, the current primary frequency regulation method has a lag. When the grid frequency changes frequently, the existing primary frequency regulation method may cause low-frequency oscillation in the power system, affecting the safety of unit operation. Summary of the invention

[0004] In order to overcome the problems existing in the related art, the present disclosure provides a primary frequency modulation method, device, storage medium and electronic equipment of a unit.

[0005] According to a first aspect of an embodiment of the present disclosure, a primary frequency regulation method of a unit is provided, the method comprising: obtaining a frequency deviation value between a grid frequency of the unit and a preset reference frequency; determining an initial preset power value of the unit to be adjusted according to the frequency deviation value when the frequency deviation value satisfies a preset condition; determining a target correction coefficient according to the initial preset power value; and adjusting the output power of the unit according to the target correction coefficient to adjust the grid frequency of the unit.

[0006] Optionally, the preset condition includes: the frequency deviation value is greater than or equal to a first preset frequency deviation value; or, the frequency deviation value is less than or equal to a second preset frequency deviation value; the first preset frequency deviation value is greater than the second preset frequency deviation value.

[0007] Optionally, determining the initial preset power value to be adjusted of the unit according to the frequency deviation value includes: determining a power compensation value of the unit according to the frequency deviation value; and determining the initial preset power value according to the power compensation value.

[0008] Optionally, determining the target correction coefficient based on the initial preset power value includes: determining the target correction coefficient based on the initial preset power value when the absolute value of the preset power value difference between the initial preset power value and the historical preset power value is greater than or equal to a preset power value difference threshold; the historical preset power value is used to characterize the initial preset power value of the historical period of the unit.

[0009] Optionally, determining the target correction coefficient according to the initial preset power value includes: determining the target correction coefficient according to the initial preset power value after a preset delay time is reached.

[0010] Optionally, determining the target correction coefficient based on the initial preset power value includes: determining a target opening value to be adjusted of a turbine valve of the unit based on the initial preset power value; determining a target correction coefficient corresponding to a target opening interval in which the target opening value is located from a plurality of preset opening intervals, different preset opening intervals corresponding to different correction coefficients.

[0011] Optionally, adjusting the output power of the unit according to the target correction coefficient includes: taking the product of the initial preset power value and the target correction coefficient as the target output power of the unit; and controlling the unit to adjust the output power to the target output power.

[0012] According to a second aspect of an embodiment of the present disclosure, a primary frequency modulation device of a unit is provided, the device comprising: An acquisition module is used to obtain a frequency deviation value between the power grid frequency of the unit and a preset reference frequency; A first determining module, configured to determine an initial preset power value to be adjusted of the unit according to the frequency deviation value when the frequency deviation value satisfies a preset condition; A second determination module, used to determine a target correction coefficient according to the initial preset power value; The regulating module is used to regulate the output power of the unit according to the target correction coefficient so as to regulate the grid frequency of the unit.

[0013] Optionally, the preset condition includes: the frequency deviation value is greater than or equal to a first preset frequency deviation value; or, the frequency deviation value is less than or equal to a second preset frequency deviation value; the first preset frequency deviation value is greater than the second preset frequency deviation value.

[0014] Optionally, the first determination module is further used to determine a power compensation value of the unit according to the frequency deviation value; and to determine the initial preset power value according to the power compensation value.

[0015] Optionally, the second determination module is also used to determine the target correction coefficient according to the initial preset power value when the absolute value of the preset power value difference between the initial preset power value and the historical preset power value is greater than or equal to the preset power value difference threshold; the historical preset power value is used to characterize the initial preset power value of the historical period of the unit.

[0016] Optionally, the second determination module is further used to determine a target correction coefficient according to the initial preset power value after a preset delay time is reached.

[0017] Optionally, the second determination module is also used to determine the target opening value to be adjusted of the turbine valve of the unit based on the initial preset power value, and determine the target correction coefficient corresponding to the target opening interval where the target opening value is located from multiple preset opening intervals, and different preset opening intervals correspond to different correction coefficients.

[0018] Optionally, the regulating module is further used to use the product of the initial preset power value and the target correction coefficient as the target output power of the unit, and control the unit to adjust the output power to the target output power.

[0019] According to a third aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, on which computer program instructions are stored. When the program instructions are executed by a processor, the steps of the primary frequency modulation method of the unit provided in the first aspect of the present disclosure are implemented.

[0020] According to a fourth aspect of an embodiment of the present disclosure, an electronic device is provided, comprising: a memory on which a computer program is stored; and a processor for executing the computer program in the memory to implement the steps of the primary frequency modulation method of the unit provided in the first aspect of the present disclosure.

[0021] Through the above technical solution, when the frequency deviation value between the obtained grid frequency of the unit and the preset reference frequency meets the preset conditions, the initial preset power value of the unit to be adjusted can be determined according to the frequency deviation value, and the target correction coefficient can be determined according to the initial preset power value, and the output power of the unit can be adjusted according to the target correction coefficient to adjust the grid frequency of the unit. In this way, when it is determined that the grid frequency needs to be adjusted according to the deviation value, the correction coefficient can be determined in advance, the adjustment value can be actively corrected, the probability of low-frequency oscillation in the power system can be reduced, and the safety of the unit operation can be improved.

[0022] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 The present invention is a flow chart of a primary frequency regulation method of a unit according to an exemplary embodiment.

[0024] Figure 2The present invention is a flow chart showing another method for primary frequency regulation of a unit according to an exemplary embodiment.

[0025] Figure 3 The invention is a block diagram of a primary frequency regulation device of a unit according to an exemplary embodiment.

[0026] Figure 4 It is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0027] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0028] The terms "first", "second", etc. in the disclosed specification and claims and the above drawings are used to distinguish similar objects and do not have to be understood as a specific order or sequence. In addition, in the description with reference to the drawings, the same symbols in different drawings represent the same elements.

[0029] In the description of the present disclosure, unless otherwise specified, "multiple" means two or more than two, and other quantifiers are similar thereto; "at least one item", "one item or multiple items" or similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, at least one item a can represent any number of a; for another example, one item or multiple items among a, b and c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple; "and / or" is a kind of description of the association relationship of associated objects, indicating that there can be three kinds of relationships, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " indicates that the associated objects before and after are in an "or" relationship.

[0030] In related technologies, with the rapid development of new energy technologies, the stability requirements of power generation and supply units in power systems are becoming increasingly higher. As an important operating indicator of power generation and supply units, the stability of the grid frequency affects the safety and efficiency of power generation and supply units. At present, the primary frequency modulation method is usually used to control the grid frequency. However, the current primary frequency modulation method has a lag. When the grid frequency changes frequently, the existing primary frequency modulation method may cause low-frequency oscillation in the power system, affecting the safety of unit operation.

[0031] Therefore, in order to overcome the problems existing in the related art, the present disclosure provides a primary frequency regulation method, device, storage medium and electronic device of a unit, which can determine the initial preset power value of the unit to be adjusted according to the frequency deviation value when the frequency deviation value between the obtained power grid frequency of the unit and the preset reference frequency meets the preset conditions, and determine the target correction coefficient according to the initial preset power value, and adjust the output power of the unit according to the target correction coefficient to adjust the power grid frequency of the unit. In this way, when it is determined that the power grid frequency needs to be adjusted according to the deviation value, the correction coefficient can be determined in advance, the adjustment value can be actively corrected, the probability of occurrence of low-frequency oscillation phenomenon in the power system can be reduced, and the safety of unit operation can be improved.

[0032] The present disclosure is described below in conjunction with specific embodiments.

[0033] Figure 1 is a flow chart of a primary frequency regulation method of a unit according to an exemplary embodiment. Figure 1 As shown, the method may include the following steps: In step S11, a frequency deviation value between the grid frequency of the unit and a preset reference frequency is obtained.

[0034] The unit may include a thermal power unit or a hydropower unit. The grid frequency of the unit may be collected by a frequency collection device such as a relay. The preset reference frequency may be 50 Hz.

[0035] For example, the frequency deviation value can be calculated by the following formula:

[0036] in, is the frequency deviation value, is the grid frequency, is the preset reference frequency.

[0037] In step S12, when the frequency deviation value satisfies a preset condition, an initial preset power value of the unit to be adjusted is determined according to the frequency deviation value.

[0038] In some embodiments, the preset condition may include: the frequency deviation value is greater than or equal to a first preset frequency deviation value; or the frequency deviation value is less than or equal to a second preset frequency deviation value.

[0039] The first preset frequency deviation value is greater than the second preset frequency deviation value. Can be ( ), the second preset frequency deviation value Can be . ≥ , or in ≤ In this case, the initial preset power value of the unit to be adjusted is determined according to the frequency deviation value.

[0040] In step S13, a target correction coefficient is determined according to the initial preset power value.

[0041] In some embodiments, the target correction coefficient may be determined based on the initial preset power value after the preset delay time is reached.

[0042] The preset delay time may be the delay time for the controller of the unit to transmit the adjustment command to the control terminal of the unit. The preset delay time may be obtained based on historical data and experimental verification. For example, the preset delay time may be set to .

[0043] In some embodiments, the target opening value to be adjusted of the turbine valve of the unit can be determined based on the initial preset power value, and the target correction coefficient corresponding to the target opening interval where the target opening value is located can be determined from multiple preset opening intervals.

[0044] Among them, the steam valve of the steam turbine can be adjusted to the target opening value through the DEH (Digital Electric Hydraulic Control System) control end of the unit.

[0045] For example, the target opening value can be calculated by the following formula:

[0046] in, is the target opening value, The opening calculation constant is determined based on historical data and through mathematical analysis methods such as regression analysis. is the initial preset power value.

[0047] In addition, different preset opening intervals correspond to different correction coefficients. The number of preset opening intervals can be determined according to the actual operation of the unit. The more preset opening intervals there are, the more accurate the corresponding adjustment result will be.

[0048] For example, the target correction coefficient corresponding to the target opening interval where the target opening value is located may be obtained through a preset correction coefficient correspondence relationship, and the preset correction coefficient correspondence relationship may include correspondence relationships between different preset opening intervals and correction coefficients.

[0049] For example, the preset correction coefficient correspondence relationship may be a preset correction coefficient correspondence table. Taking the number of the preset opening intervals as 4 for illustration, the opening value may be divided into 4 intervals of equal size, which are respectively recorded as interval 1, interval 2, interval 3 and interval 4. The opening value range corresponding to interval 1 is [A, B), the opening value range corresponding to interval 2 is [B, C), the opening value range corresponding to interval 3 is [C, D), and the opening value range corresponding to interval 4 is [D, E], as shown in the following table:

[0050] Table 1 Refer to Table 1 above. When the preset opening interval is interval 1, the correction coefficient for ; When the preset opening interval is interval 2, the correction coefficient for ; When the preset opening interval is interval 3, the correction coefficient for ; When the preset opening interval is interval 4, the correction coefficient for .

[0051] In step S14, the output power of the unit is adjusted according to the target correction coefficient to adjust the grid frequency of the unit.

[0052] The target correction coefficient can be used to correct the initial preset power value, and the power can be adjusted based on the corrected output power value. The output power can include active power, and the grid frequency can be adjusted by adjusting the output power based on the balance relationship between the active power and the grid frequency.

[0053] By adopting the above scheme, when the frequency deviation value between the obtained grid frequency of the unit and the preset reference frequency meets the preset conditions, the initial preset power value of the unit to be adjusted can be determined according to the frequency deviation value, and the target correction coefficient can be determined according to the initial preset power value, and the output power of the unit can be adjusted according to the target correction coefficient to adjust the grid frequency of the unit. In this way, when it is determined that the grid frequency needs to be adjusted according to the deviation value, the correction coefficient can be determined in advance, the adjustment value can be actively corrected, the probability of low-frequency oscillation in the power system can be reduced, and the safety of the unit operation can be improved.

[0054] In some embodiments, the above step S13 may include: determining a target correction coefficient according to the initial preset power value when the absolute value of the preset power value difference between the initial preset power value and the historical preset power value is greater than or equal to the preset power value difference threshold.

[0055] The historical preset power value is used to represent the initial preset power value of the historical cycle of the unit, and the historical cycle may be the previous regulation cycle of the unit.

[0056] The preset power value difference can be calculated by the following formula:

[0057] in, is the preset power value difference, is the initial preset power value, Preset power value for this history.

[0058] For example, in In the case of, according to the initial preset power value, determine the target correction coefficient, where Indicates the absolute value of the preset power value difference, is a preset power value difference threshold determined according to experiments.

[0059] In this way, the unit can be adjusted when it is determined that the deviation between the current adjustment value and the historical adjustment value is greater than the set threshold, which can prevent the safety valve of the unit's turbine from operating frequently, reduce the probability of low-frequency oscillation of the unit, and ensure the safe operation of the unit.

[0060] In some embodiments, the above step S12 may include the following implementation methods: determining the power compensation value of the unit according to the frequency deviation value, and determining the initial preset power value according to the power compensation value.

[0061] Among them, the power compensation value may include the active power compensation amount to be adjusted. For example, when the frequency deviation value between the grid frequency of the unit and the preset reference frequency is greater than or equal to the first preset frequency deviation value threshold, the output power of the unit is greater than the power load. The power compensation value can be used to reduce the initial preset power value. The power compensation value can be calculated by the following formula:

[0062] in, is the power compensation value, is the frequency deviation value, is the first preset frequency deviation value, is the rated power of the unit, is the power regulation constant determined based on historical data.

[0063] The initial preset power value can be calculated by the following formula:

[0064] in, is the initial preset power value, is the power compensation value, is the current output power of the unit.

[0065] Correspondingly, when the frequency deviation value between the grid frequency of the unit and the preset reference frequency is less than or equal to the second preset frequency deviation value threshold, the output power of the unit is less than the power load, and the initial preset power value can be increased by the power compensation value, which can be calculated by the following formula:

[0066] in, is the power compensation value, is the frequency deviation value, is the second preset frequency deviation value, is the rated power of the unit, is the power regulation constant determined based on historical data.

[0067] The initial preset power value can be calculated by the following formula:

[0068] in, is the initial preset power value, is the power compensation value, is the current output power of the unit.

[0069] In this way, the active power that the unit needs to output can be calculated based on the deviation between the grid frequency and the reference frequency, so as to control the unit to adjust the output power, thereby improving the accuracy of primary frequency regulation.

[0070] In some embodiments, the above step S14 may include the following implementation method: using the multiplication value of the initial preset power value and the target correction coefficient as the target output power of the unit, and controlling the unit to adjust the output power to the target output power.

[0071] For example, the target output power can be calculated by the following formula:

[0072] in, For the target output power, is the initial preset power value, In this way, the initial preset value of the output power can be actively corrected by the correction coefficient, thereby reducing the probability of low-frequency oscillation in the power system and improving the safety of unit operation.

[0073] Figure 2is a flow chart showing another method for primary frequency regulation of a unit according to an exemplary embodiment. Figure 2 As shown, the method includes: S201. Obtain a frequency deviation value between a power grid frequency of a unit and a preset reference frequency.

[0074] The frequency deviation value can be calculated by the following formula:

[0075] in, is the frequency deviation value, is the grid frequency, is the preset reference frequency.

[0076] S202: When the frequency deviation value satisfies a preset condition, determine a power compensation value of the unit according to the frequency deviation value.

[0077] The preconditions include: ≥ ,or ≤ ,in is the frequency deviation value, is the first preset frequency deviation value, is the second preset frequency deviation value.

[0078] In addition, you can ≥ In the case of, the power compensation value is calculated by the following formula:

[0079] in, is the power compensation value, is the frequency deviation value, is the first preset frequency deviation value, is the rated power of the unit, is the power regulation constant determined based on historical data.

[0080] Correspondingly, in ≤ In the case of, the power compensation value is calculated by the following formula:

[0081] in, is the power compensation value, is the frequency deviation value, is the second preset frequency deviation value, is the rated power of the unit, is the power regulation constant determined based on historical data.

[0082] S203: Determine the initial preset power value according to the power compensation value.

[0083] For example, in ≥ In the case of, the initial preset power value is calculated by the following formula:

[0084] in, is the initial preset power value, is the power compensation value, is the current output power of the unit.

[0085] Correspondingly, in ≤ In the case of, the initial preset power value is calculated by the following formula:

[0086] in, is the initial preset power value, is the power compensation value, is the current output power of the unit.

[0087] S204. When the absolute value of the difference between the initial preset power value and the historical preset power value is greater than or equal to the preset power value difference threshold and the preset delay time is reached, determine the target opening value of the turbine valve of the unit to be adjusted according to the initial preset power value.

[0088] The historical preset power value may be the initial preset power value of the previous adjustment cycle of the unit, which may be and reaches the preset delay time In the case of, determine the target opening value, where is the absolute value of the preset power value difference, is the preset power value difference threshold.

[0089] For example, the target opening value can be calculated by the following formula:

[0090] in, is the target opening value, The opening calculation constant is determined based on historical data and through mathematical analysis methods such as regression analysis. is the initial preset power value.

[0091] S205 . Determine, from a plurality of preset opening intervals, a target correction coefficient corresponding to the target opening interval in which the target opening value is located.

[0092] The target correction coefficient corresponding to the target opening interval where the target opening value is located can be obtained through a preset correction coefficient correspondence relationship, and the preset correction coefficient correspondence relationship can include correspondence relationships between different preset opening intervals and correction coefficients.

[0093] S206: The product of the initial preset power value and the target correction coefficient is used as the target output power of the unit.

[0094] The target output power can be calculated by the following formula:

[0095] in, For the target output power, is the initial preset power value, is the target correction factor.

[0096] S207, controlling the unit to adjust the output power to the target output power, so as to adjust the grid frequency of the unit.

[0097] By adopting the above scheme, when the frequency deviation value between the obtained grid frequency of the unit and the preset reference frequency is greater than or equal to the first preset frequency deviation value or less than or equal to the second preset frequency deviation value, the power compensation value of the unit can be determined according to the frequency deviation value, and the initial preset power value to be adjusted of the unit can be determined thereby, and when the absolute value of the preset power value difference between the initial preset power value and the historical preset power value is greater than or equal to the preset power value difference threshold and reaches the preset delay time, the target opening value to be adjusted of the turbine valve of the unit can be determined according to the initial preset power value, and the target correction coefficient corresponding to the target opening interval where the target opening value is located is determined from multiple preset opening intervals, and the output power of the unit is adjusted according to the product of the target correction coefficient and the initial preset power value to adjust the grid frequency of the unit. In this way, when it is determined that the grid frequency needs to be adjusted based on the deviation value, the deviation between the current adjustment value and the historical adjustment value can be determined first. When the determined deviation is greater than the set threshold, the unit is adjusted to prevent the safety valve of the unit's turbine from operating frequently. During adjustment, the correction coefficient is determined in advance and the adjustment value is actively corrected. This can reduce the probability of low-frequency oscillation in the power system and improve the safety of unit operation.

[0098] It should be noted that, for the specific implementation of each step in the above embodiment, reference can be made to the description of the relevant steps in the above embodiment, which will not be repeated here.

[0099] Figure 3 is a block diagram of a primary frequency modulation device of a unit according to an exemplary embodiment, referring to Figure 3 , the device comprises: An acquisition module 301 is used to acquire a frequency deviation value between a power grid frequency of a unit and a preset reference frequency; A first determination module 302 is used to determine an initial preset power value of the unit to be adjusted according to the frequency deviation value when the frequency deviation value meets a preset condition; A second determination module 303 is used to determine a target correction coefficient according to the initial preset power value; The adjustment module 304 is used to adjust the output power of the unit according to the target correction coefficient to adjust the grid frequency of the unit.

[0100] Optionally, the preset condition includes: the frequency deviation value is greater than or equal to a first preset frequency deviation value; or, the frequency deviation value is less than or equal to a second preset frequency deviation value; the first preset frequency deviation value is greater than the second preset frequency deviation value.

[0101] Optionally, the first determination module 302 is further configured to determine a power compensation value of the unit according to the frequency deviation value, and to determine the initial preset power value according to the power compensation value.

[0102] Optionally, the second determination module 303 is also used to determine the target correction coefficient based on the initial preset power value when the absolute value of the preset power value difference between the initial preset power value and the historical preset power value is greater than or equal to the preset power value difference threshold; the historical preset power value is used to characterize the initial preset power value of the historical period of the unit.

[0103] Optionally, the second determination module 303 is further configured to determine a target correction coefficient according to the initial preset power value after a preset delay time is reached.

[0104] Optionally, the second determination module 303 is also used to determine the target opening value to be adjusted of the turbine valve of the unit based on the initial preset power value, and determine the target correction coefficient corresponding to the target opening interval where the target opening value is located from multiple preset opening intervals, and different preset opening intervals correspond to different correction coefficients.

[0105] Optionally, the regulating module 304 is further configured to use the multiplication value of the initial preset power value and the target correction coefficient as the target output power of the unit, and control the unit to adjust the output power to the target output power.

[0106] By adopting the above-mentioned device, when the frequency deviation value between the obtained grid frequency of the unit and the preset reference frequency is greater than or equal to the first preset frequency deviation value or less than or equal to the second preset frequency deviation value, the power compensation value of the unit can be determined according to the frequency deviation value, and the initial preset power value to be adjusted of the unit can be determined thereby, and when the absolute value of the preset power value difference between the initial preset power value and the historical preset power value is greater than or equal to the preset power value difference threshold and reaches the preset delay time, the target opening value to be adjusted of the turbine valve of the unit can be determined according to the initial preset power value, and the target correction coefficient corresponding to the target opening interval where the target opening value is located is determined from multiple preset opening intervals, and the output power of the unit is adjusted according to the product of the target correction coefficient and the initial preset power value to adjust the grid frequency of the unit. In this way, when it is determined that the grid frequency needs to be adjusted based on the deviation value, the deviation between the current adjustment value and the historical adjustment value can be determined first. When the determined deviation is greater than the set threshold, the unit is adjusted to prevent the safety valve of the unit's turbine from operating frequently. During adjustment, the correction coefficient is determined in advance and the adjustment value is actively corrected. This can reduce the probability of low-frequency oscillation in the power system and improve the safety of unit operation.

[0107] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0108] Figure 4 FIG. 4 is a block diagram of an electronic device 400 according to an exemplary embodiment. Figure 4 As shown, the electronic device 400 may include: a processor 401 , a memory 402 . The electronic device 400 may also include one or more of a multimedia component 403 , an input / output (I / O) interface 404 , and a communication component 405 .

[0109] The processor 401 is used to control the overall operation of the electronic device 400 to complete all or part of the steps in the primary frequency modulation method of the above-mentioned unit. The memory 402 is used to store various types of data to support the operation of the electronic device 400. For example, these data may include instructions for any application or method used to operate on the electronic device 400, and application-related data, such as contact data, sent and received messages, pictures, audio, video, etc. The memory 402 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, referred to as EPROM), programmable read-only memory (Programmable Read-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, magnetic disk or optical disk. The multimedia component 403 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may be further stored in the memory 402 or sent through the communication component 405. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 404 provides an interface between the processor 401 and other interface modules, and the other interface modules may be keyboards, mice, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 405 is used for wired or wireless communication between the electronic device 400 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, is not limited here. Therefore, the corresponding communication component 405 may include: Wi-Fi module, Bluetooth module, NFC module, etc.

[0110] In an exemplary embodiment, the electronic device 400 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned primary frequency modulation method of the unit.

[0111] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the primary frequency modulation method of the above-mentioned unit are implemented. For example, the computer-readable storage medium can be the above-mentioned memory 402 including program instructions, and the above-mentioned program instructions can be executed by the processor 401 of the electronic device 400 to complete the above-mentioned primary frequency modulation method of the unit.

[0112] In another exemplary embodiment, a computer program product is also provided, which includes a computer program that can be executed by a programmable device, and the computer program has a code portion for executing the above-mentioned primary frequency regulation method of the unit when executed by the programmable device.

[0113] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0114] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0115] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A primary frequency modulation method for a unit, characterized in that: The method comprises: Obtain the frequency deviation value between the power grid frequency of the unit and the preset reference frequency; When the frequency deviation value satisfies a preset condition, determining an initial preset power value of the unit to be adjusted according to the frequency deviation value; Determining a target correction coefficient according to the initial preset power value; According to the target correction coefficient, the output power of the unit is adjusted to adjust the grid frequency of the unit.

2. The method according to claim 1, characterized in that The preset conditions include: The frequency deviation value is greater than or equal to a first preset frequency deviation value; or, The frequency deviation value is less than or equal to a second preset frequency deviation value; the first preset frequency deviation value is greater than the second preset frequency deviation value.

3. The method according to claim 1, characterized in that Determining the initial preset power value to be adjusted of the unit according to the frequency deviation value includes: Determining a power compensation value of the unit according to the frequency deviation value; The initial preset power value is determined according to the power compensation value.

4. The method according to claim 1, characterized in that: Determining the target correction coefficient according to the initial preset power value includes: When the absolute value of the difference between the initial preset power value and the historical preset power value is greater than or equal to the preset power value difference threshold, the target correction coefficient is determined according to the initial preset power value; the historical preset power value is used to characterize the initial preset power value of the historical period of the unit.

5. The method according to claim 1, characterized in that Determining the target correction coefficient according to the initial preset power value includes: After the preset delay time is reached, the target correction coefficient is determined according to the initial preset power value.

6. The method according to claim 1, characterized in that Determining the target correction coefficient according to the initial preset power value includes: Determining a target opening value of a steam turbine valve of the unit to be adjusted according to the initial preset power value; From a plurality of preset opening intervals, a target correction coefficient corresponding to the target opening interval where the target opening value is located is determined, and different preset opening intervals correspond to different correction coefficients.

7. The method according to claim 6, characterized in that The adjusting the output power of the unit according to the target correction coefficient comprises: Taking the multiplication value of the initial preset power value and the target correction coefficient as the target output power of the unit; The unit is controlled to adjust the output power to the target output power.

8. A primary frequency modulation device for a unit, characterized in that: The device comprises: An acquisition module is used to obtain a frequency deviation value between the power grid frequency of the unit and a preset reference frequency; A first determining module, configured to determine an initial preset power value to be adjusted of the unit according to the frequency deviation value when the frequency deviation value satisfies a preset condition; A second determination module, used to determine a target correction coefficient according to the initial preset power value; The regulating module is used to regulate the output power of the unit according to the target correction coefficient so as to regulate the grid frequency of the unit.

9. The device according to claim 8, characterized in that The preset conditions include: The frequency deviation value is greater than or equal to a first preset frequency deviation value; or, The frequency deviation value is less than or equal to a second preset frequency deviation value; the first preset frequency deviation value is greater than the second preset frequency deviation value.

10. The device according to claim 8, characterized in that The first determination module is further used to determine the power compensation value of the unit according to the frequency deviation value, and to determine the initial preset power value according to the power compensation value.

11. The device according to claim 8, characterized in that The second determination module is also used to determine the target correction coefficient according to the initial preset power value when the absolute value of the preset power value difference between the initial preset power value and the historical preset power value is greater than or equal to the preset power value difference threshold; the historical preset power value is used to characterize the initial preset power value of the historical period of the unit.

12. The device according to claim 8, characterized in that The second determination module is further used to determine a target correction coefficient according to the initial preset power value after a preset delay time is reached.

13. The device according to claim 8, characterized in that The second determination module is also used to determine the target opening value to be adjusted of the turbine valve of the unit based on the initial preset power value, and determine the target correction coefficient corresponding to the target opening interval where the target opening value is located from multiple preset opening intervals, and different preset opening intervals correspond to different correction coefficients.

14. The device according to claim 13, characterized in that The regulating module is further used to use the multiplication value of the initial preset power value and the target correction coefficient as the target output power of the unit, and control the unit to adjust the output power to the target output power.

15. A non-transitory computer-readable storage medium having a computer program stored thereon, 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.

16. An electronic device, characterized in that: include: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the steps of the method according to any one of claims 1 to 7.

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