Broadband oscillation alarm time dynamic adjustment method, system and device and storage medium

Abstract

The invention belongs to the field of power system automation, and discloses a broadband oscillation alarm time dynamic adjustment method, system and device, and a storage medium, and the method comprises the steps: obtaining a floating coefficient of a dominant oscillation frequency based on a proportion between an oscillation characteristic quantity real-time amplitude of the dominant oscillation frequency and an alarm threshold value; and then a dynamic adjustment coefficient of the initial oscillation alarm time is obtained by combining the proportion and the floating coefficient, so that dynamic adjustment of the initial oscillation alarm time of the dominant oscillation frequency is realized, and the real-time oscillation alarm time of the dominant oscillation frequency is obtained. Through real-time dynamic adjustment of the oscillation alarm time, the alarm requirement under current common oscillation is compatible, the oscillation alarm time can be effectively shortened after serious oscillation occurs, rapid alarm of oscillation is realized, the real-time performance and accuracy of oscillation alarm are effectively improved, sufficient time is reserved for rapid response of power grid dispatching, and the power grid dispatching efficiency is improved. The occurrence probability of power grid accidents in serious oscillation processing is reduced, and the operation safety of a power grid is guaranteed.

Description

Technical Field

[0001] The invention belongs to the field of power system automation, and relates to a method, system, device and storage medium for dynamically adjusting the warning time of broadband oscillation. Background Technique

[0002] The development and construction of the new power system have promoted the wide application of power electronic devices represented by inverters. At the same time, with the large-scale application of high-voltage direct current transmission technology, the number of power electronic devices in the entire power grid has increased significantly, and the entire power grid shows a trend of power electronics. It is easy to couple new broadband oscillations between these power electronic devices and between power electronic devices and the power grid, and a series of serious accidents such as unit tripping and fan disconnection from the grid have been caused, affecting the safe operation of the power grid.

[0003] The existing WAMS (Wide Area Measurement System) can theoretically only monitor subsynchronous oscillations within 50Hz, and can only be carried out at the dispatching master station. The frequency coverage range of the broadband oscillations caused by the new power system can range from a few hertz to several thousand hertz. The existing transmission bandwidth and the storage capacity of the master station are difficult to support the oscillation monitoring and analysis of the master station. Therefore, for broadband oscillations, only in-situ real-time monitoring can be carried out. The industry has proposed broadband measurement technology and developed broadband measurement devices, which can realize in-situ real-time monitoring and warning of broadband oscillations in the power grid. This provides a guarantee for the comprehensive popularization and application of broadband measurement devices, and provides a new technical means for accurately perceiving the operating state of the new power system. In particular, this device can real-time monitor broadband oscillations within 2500Hz, which can provide a guarantee for the safe and stable operation of the power grid.

[0004] However, it is found in actual engineering applications that for the warning of broadband oscillations, the time is often counted after the oscillation characteristic quantity exceeds the threshold, and when the counted time reaches the set time, the warning is triggered. This method can better meet the requirements of engineering applications when the oscillation changes slowly or the oscillation is not very serious. However, when the oscillation amplifies rapidly or the oscillation is particularly strong, the threat of the oscillation to the power grid becomes greater, resulting in the occurrence of power grid accidents in subsequent oscillation processing. Summary of the Invention

[0005] The purpose of the invention is to overcome the above-mentioned disadvantages of the prior art, and provide a method, system, device and storage medium for dynamically adjusting the warning time of broadband oscillation.

[0006] To achieve the above object, the invention adopts the following technical solutions:

[0007] In the first aspect of the present invention, a method for dynamically adjusting the wide - band oscillation alarm time is provided, including: obtaining the real - time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency, the alarm threshold, and the initial oscillation alarm time; obtaining the floating coefficient of the dominant oscillation frequency according to the ratio between the real - time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold; wherein, the minimum value of the floating coefficient is 1, and it is positively correlated with the ratio between the real - time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold; obtaining the dynamic adjustment coefficient of the initial oscillation alarm time according to the ratio between the real - time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient; wherein, the dynamic adjustment coefficient is positively correlated with both the ratio between the real - time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient; dividing the initial oscillation alarm time of the dominant oscillation frequency by the dynamic adjustment coefficient of the initial oscillation alarm time to obtain the real - time oscillation alarm time of the dominant oscillation frequency.

[0008] Optionally, the initial oscillation alarm time of the dominant oscillation frequency is: a preset fixed time, or the result of multiplying the oscillation period of the dominant oscillation frequency by a preset number of oscillation periods.

[0009] Optionally, the step of obtaining the floating coefficient of the dominant oscillation frequency according to the ratio between the real - time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold includes: obtaining the floating coefficient of the dominant oscillation frequency according to the comparison relationship between the preset data interval and the floating coefficient, in combination with the data interval where the ratio between the real - time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold is located.

[0010] Optionally, the step of obtaining the dynamic adjustment coefficient of the initial oscillation alarm time according to the ratio between the real - time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient includes: multiplying the ratio between the real - time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient to obtain the dynamic adjustment coefficient of the initial oscillation alarm time.

[0011] Optionally, when there are at least two oscillation characteristic quantities of the dominant oscillation frequency: respectively obtain the real - time oscillation alarm time of the dominant oscillation frequency under each oscillation characteristic quantity.

[0012] In the second aspect of the present invention, a wide - band oscillation alarm time dynamic adjustment system is provided, including: a data acquisition module, configured to acquire the real - time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency, the alarm threshold, and the initial oscillation alarm time; a floating coefficient determination module, configured to obtain the floating coefficient of the dominant oscillation frequency according to the ratio between the real - time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold; wherein the minimum value of the floating coefficient is 1, and it is positively correlated with the ratio between the real - time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold; an adjustment coefficient determination module, configured to obtain the dynamic adjustment coefficient of the initial oscillation alarm time according to the ratio between the real - time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient; wherein the dynamic adjustment coefficient is positively correlated with both the ratio between the real - time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient; a dynamic adjustment module, configured to divide the initial oscillation alarm time of the dominant oscillation frequency by the dynamic adjustment coefficient of the initial oscillation alarm time to obtain the real - time oscillation alarm time of the dominant oscillation frequency.

[0013] Optionally, the initial oscillation alarm time of the dominant oscillation frequency is: a preset fixed time, or the result of multiplying the oscillation period of the dominant oscillation frequency by a preset number of oscillation periods.

[0014] Optionally, the step of obtaining the floating coefficient of the dominant oscillation frequency according to the ratio between the real - time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold includes: obtaining the floating coefficient of the dominant oscillation frequency according to the correspondence relationship between the preset data interval and the floating coefficient, in combination with the data interval where the ratio between the real - time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold is located.

[0015] Optionally, the step of obtaining the dynamic adjustment coefficient of the initial oscillation alarm time according to the ratio between the real - time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient includes: multiplying the ratio between the real - time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient to obtain the dynamic adjustment coefficient of the initial oscillation alarm time.

[0016] Optionally, when there are at least two oscillation characteristic quantities of the dominant oscillation frequency: respectively obtain the real - time oscillation alarm time of the dominant oscillation frequency under each oscillation characteristic quantity.

[0017] In the third aspect of the present invention, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the above - mentioned wide - band oscillation alarm time dynamic adjustment method are implemented.

[0018] In the fourth aspect of the present invention, there is provided a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the steps of the above-mentioned method for dynamically adjusting the broadband oscillation alarm time are implemented.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] In the method for dynamically adjusting the broadband oscillation alarm time of the present invention, a floating coefficient of the dominant oscillation frequency is obtained based on the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold, and then a dynamic adjustment coefficient of the initial oscillation alarm time is obtained by combining this ratio and the floating coefficient, thereby realizing the dynamic adjustment of the initial oscillation alarm time of the dominant oscillation frequency and obtaining the real-time oscillation alarm time of the dominant oscillation frequency. Among them, the minimum value of the floating coefficient is 1 and it is positively correlated with the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold. At the same time, the dynamic adjustment coefficient is positively correlated with both the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient. Based on such a design, not only the alarm requirements under the current ordinary oscillation are compatible, but also the oscillation alarm time can be effectively shortened after a severe oscillation occurs, realizing fast alarm of the oscillation, effectively improving the real-time performance and accuracy of the oscillation alarm, reserving sufficient time for the rapid response of power grid dispatching, and thus reducing the occurrence probability of power grid accidents in the treatment of severe oscillations and ensuring the safe operation of the power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a flowchart of the method for dynamically adjusting the broadband oscillation alarm time according to an embodiment of the present invention.

[0022] Figure 2 It is a schematic diagram of the principle for determining the floating coefficient according to an embodiment of the present invention.

[0023] Figure 3 It is a schematic diagram of the principle for calculating the real-time oscillation alarm time of the oscillation characteristic quantity according to an embodiment of the present invention.

[0024] Figure 4 It is a block diagram of the system structure for dynamically adjusting the broadband oscillation alarm time according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art without making creative efforts based on the embodiments of the present invention shall fall within the protection scope of the present invention.

[0026] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of the present invention are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily limit to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0027] The present invention will be further described in detail below with reference to the accompanying drawings:

[0028] See Figure 1 , in an embodiment of the present invention, a method for dynamically adjusting the broadband oscillation alarm time is provided to provide sufficient time for the rapid response of the scheduling for severe oscillation processing.

[0029] Specifically, the method for dynamically adjusting the broadband oscillation alarm time of the present invention includes the following steps:

[0030] S1: Obtain the real-time amplitude of the oscillation characteristic quantity, the alarm threshold and the initial oscillation alarm time of the dominant oscillation frequency.

[0031] S2: Obtain the floating coefficient of the dominant oscillation frequency according to the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold; wherein, the minimum value of the floating coefficient is 1 and is positively correlated with the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold.

[0032] S3: Obtain the dynamic adjustment coefficient of the initial oscillation alarm time according to the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient; wherein, the dynamic adjustment coefficient is positively correlated with both the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient.

[0033] S4: Divide the initial oscillation alarm time of the dominant oscillation frequency by the dynamic adjustment coefficient of the initial oscillation alarm time to obtain the real-time oscillation alarm time of the dominant oscillation frequency.

[0034] The dynamic adjustment method for the wide - band oscillation alarm time of the present invention obtains the floating coefficient of the dominant oscillation frequency based on the ratio between the real - time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold, and then combines this ratio and the floating coefficient to obtain the dynamic adjustment coefficient of the initial oscillation alarm time, thereby realizing the dynamic adjustment of the initial oscillation alarm time of the dominant oscillation frequency and obtaining the real - time oscillation alarm time of the dominant oscillation frequency. Among them, the minimum value of the floating coefficient is 1 and it is positively correlated with the ratio between the real - time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold. At the same time, the dynamic adjustment coefficient is positively correlated with both the ratio between the real - time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient. Based on such a design, it not only meets the alarm requirements under the current ordinary oscillation, but also can effectively shorten the oscillation alarm time after a severe oscillation occurs, realize the rapid alarm of the oscillation, effectively improve the real - time performance and accuracy of the oscillation alarm, reserve sufficient time for the rapid response of power grid dispatching, and thus reduce the occurrence probability of power grid accidents during the handling of severe oscillations and ensure the safe operation of the power grid.

[0035] In a possible implementation manner, the initial oscillation alarm time of the dominant oscillation frequency is: a preset fixed time, or the result of multiplying the oscillation period of the dominant oscillation frequency by a preset number of oscillation periods.

[0036] Explanatorily, first, a fixed reference value is set for the initial oscillation alarm time of the wide - band oscillation, and this value is also the base number for the dynamic adjustment of the oscillation alarm time. This fixed reference value can be a fixed time or the number of periods corresponding to the oscillation frequency.

[0037] For the case of setting it as a fixed time, its value can directly follow the alarm setting time of the wide - band oscillation monitoring device. For example, currently 3s is adopted, that is, as long as the real - time amplitude of the oscillation characteristic quantity exceeds the alarm threshold and the continuous over - limit time reaches 3s, the oscillation alarm is immediately triggered.

[0038] For the case of setting it as the number of periods corresponding to the oscillation frequency, the base number for the dynamic adjustment of the oscillation alarm time needs to first calculate its oscillation period in combination with the dominant oscillation frequency, and then multiply it by the set number of periods to obtain the specific time. For example, if the dominant oscillation frequency is 5Hz and the oscillation power or oscillation current exceeds the alarm threshold, then its oscillation period at this time is 1 / 5 = 0.2s. If the set number of periods is 20 at this time, then the alarm time is 0.2s * 20 = 4s, and this calculated 4s is the base number for the dynamic adjustment of the oscillation alarm time.

[0039] Of course, for the fixed-time method, its time base remains unchanged. However, for the method using the number of periods corresponding to the oscillation frequency, the numerical calculation starts only after the oscillation characteristic quantity exceeds the alarm threshold. During the process of oscillation continuation, due to changes in the power grid topology, units, or loads, etc., the dominant oscillation frequency will gradually change. For example, it may gradually change from 3 Hz to 3.02 Hz or 3.05 Hz, etc. During the time when the oscillation characteristic quantity exceeds the alarm threshold, this alarm time base may change slowly. However, since the change in the dominant oscillation frequency often occurs relatively slowly and it usually takes several minutes to observe an obvious change, it will not affect the triggering of the oscillation alarm. Moreover, even if the dominant oscillation frequency is constantly changing, only the fixed-time base value needs to be dynamically calculated and adjusted. After all, the time-varying speed of the dominant oscillation frequency is usually relatively slow. Here, the time variation of the oscillation frequency refers not to the amplitude of its oscillation but to the value of the oscillation frequency.

[0040] When the real-time amplitude of the oscillation characteristic quantity exceeds the alarm threshold, the duration of the oscillation overrun is then counted. When the duration exceeds the corresponding real-time oscillation alarm time, the alarm is immediately triggered.

[0041] In a possible implementation manner, obtaining the floating coefficient of the dominant oscillation frequency according to the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold includes: obtaining the floating coefficient of the dominant oscillation frequency according to the correspondence relationship between the preset data interval and the floating coefficient and combining the data interval in which the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold is located.

[0042] Explanatorily, when the real-time amplitude of the oscillation characteristic quantity exceeds the alarm threshold, at this time, the ratio K between the real-time amplitude of the oscillation characteristic quantity and the alarm threshold is synchronously calculated based on the real-time amplitude of the oscillation characteristic quantity, and the calculation will continue until the alarm is triggered or the alarm is cancelled. Here, triggering the alarm means that the real-time amplitude of the oscillation characteristic quantity continuously exceeds the limit and reaches the real-time oscillation alarm time and then the alarm is triggered; while cancelling the alarm means that within the continuous time, if the real-time amplitude of the oscillation characteristic quantity is less than the alarm threshold, the statistics of the oscillation overrun time are cancelled and the calculation of the ratio K is cancelled. If a new overrun occurs, the statistics of the oscillation overrun duration will start again.

[0043] For example, if only the amplitude of the oscillating interharmonic current is used as the oscillation characteristic quantity at this time, and the alarm threshold is set to 5 A, then when oscillation occurs, regardless of the oscillation frequency, if the amplitude of the interharmonic current of the dominant oscillation frequency is 8 A, then the ratio K = 8 / 5 = 1.6 at this time. It should be noted here that the specific oscillation frequency has no influence on the judgment of oscillation alarm, and its value is only the oscillation information formed after the alarm. That is to say, whether it is a 4 Hz oscillation or a 5.1 Hz oscillation, the method for judging the oscillation alarm time is the same. In the above example, the amplitude of the interharmonic current corresponding to each oscillation frequency is compared with the alarm threshold for analysis to further calculate the ratio K, and then different floating coefficients are selected according to the ratio K.

[0044] See Figure 2 , the floating coefficient is often set differently according to the actual situation, that is, it is selected according to different data intervals where the ratio K is located. The data intervals can be flexibly set according to more specific actual situations, and can be one or multiple. For example, when 1 < K < N1, the floating coefficient is F1; when N1 <= K < N2, the floating coefficient is F2; when N2 <= K < N3, the floating coefficient is F3; when K >= N3, the floating coefficient is F4. Among them, N1, N2, N3 and F1, F2, F3 are all constants and can be flexibly configured by themselves. For example, N1 = 2, N2 = 3, N3 = 4, F1 = 1.0, F2 = 1.5, F3 = 2.0, F4 = 2.5, etc., then it can be expressed as:

[0045]

[0046] When F1 = 1.0, the floating coefficient F is 1 at this time, and the effect is exactly the same as that of a fixed time at this time; for other values, they are used to calculate the alarm time in various severe oscillations, so as to quickly reduce the oscillation alarm time according to the severity of the oscillation.

[0047] In a possible implementation manner, the obtaining of the dynamic adjustment coefficient of the initial oscillation alarm time according to the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient includes: multiplying the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient to obtain the dynamic adjustment coefficient of the initial oscillation alarm time.

[0048] Explanatorily, after obtaining the floating coefficient, the alarm time is calculated in real time on the basis of the initial oscillation alarm time Tb: Tb / K / F. Based on the above example, if Tb = 3 s, when K = 2.2 and F = F2 = 1.5, then the calculated real-time oscillation alarm time at this time is 3 s / 2.2 / 1.5 = 0.909 s, and an alarm can be given quickly at this time.

[0049] During the time when the oscillation characteristic quantity exceeds the limit, the real-time amplitude of the oscillation characteristic quantity will often change dynamically. If the damping in the power grid is weak or even negative, the oscillation will continue to amplify and the real-time amplitude of the oscillation characteristic quantity will become larger and larger. At this time, the floating coefficient is faced with a change.

[0050] 1. The floating coefficient belongs to the same data interval. Still using the above example to discuss, when the real-time amplitude of the oscillation characteristic quantity gradually increases and causes the ratio K to gradually change from 2.2 to 2.8, then although the ratio increases, since it still belongs to the same data interval of the floating coefficient, the floating coefficient F is still 1.5 at this time, and the time after dynamic adjustment is 3s / 2.8 / 1.5=0.714s. At this time, although the floating coefficient has not changed, the change in the proportional coefficient causes the change in the dynamic adjustment time of the alarm. 2. The floating coefficient spans different data intervals. If the oscillation gradually intensifies, causing the ratio K to quickly change from 2.2 to 3.1, then the ratio spans different data intervals, and the floating coefficient F becomes 2.0 at this time, then the time after dynamic adjustment is 3s / 3.1 / 2=0.48s. In this case, the dual changes of the proportion change and the floating coefficient cause the change of the dynamic adjustment time of the alarm, which can achieve a rapid alarm in the case of severe oscillation.

[0051] Of course, this example scenario is for the case where the oscillation continues to amplify. There is also a situation where the floating coefficient spans different data intervals, but it may eventually become smaller due to external intervention. For example, after the ratio K reaches 3.1, the real-time amplitude of the oscillation characteristic quantity decreases due to external intervention or changes in the external topology of the power grid. At this time, the ratio K gradually changes from 3.1 to 2.5, and then to 1.8. In the process of the continuous change of the ratio K, the floating coefficient also spans multiple data intervals, from 2.0 to 1.5, and then to 1.0. The real-time oscillation alarm time has also been changing, and finally it is 3s / 1.8 / 1=1.67s.

[0052] In the statistics of the oscillation over-limit time, as long as no alarm is triggered, the dynamically adjusted real-time oscillation alarm time will be dynamically adjusted and calculated according to the changes in the ratio K and the floating coefficient.

[0053] In a possible implementation manner, when the oscillation characteristic quantities of the dominant oscillation frequency include at least two types: the real-time oscillation alarm time of the dominant oscillation frequency under each oscillation characteristic quantity is respectively obtained.

[0054] Explanatory, see Figure 3, if there are multiple oscillation characteristic quantities for oscillation alarm used by the broadband measurement device or the broadband measurement monitoring device, then each oscillation characteristic quantity will have its own independent alarm threshold, initial oscillation alarm time, ratio, floating coefficient, etc. Taking the interharmonic current and active power as two characteristic quantities for oscillation monitoring and alarm in the case of sub- / supra-synchronous oscillation as an example, both the interharmonic current and the active power will have an alarm threshold and an initial oscillation alarm time. Calculate the real-time oscillation alarm time of the dominant oscillation frequency under each oscillation characteristic quantity independently according to the above method. Finally, the alarm is triggered first when any oscillation characteristic quantity meets the alarm condition, that is, when the over-limit duration of the real-time amplitude of any oscillation characteristic quantity reaches the corresponding real-time oscillation alarm time, an alarm is immediately issued. At the same time, the real-time amplitudes of other oscillation characteristic quantities can also be provided.

[0055] The following is an apparatus embodiment of the present invention, which can be used to implement the method embodiment of the present invention. For the details not disclosed in the apparatus embodiment, please refer to the method embodiment of the present invention.

[0056] See Figure 4 , in another embodiment of the present invention, a broadband oscillation alarm time dynamic adjustment system is provided, which can be used to implement the above-mentioned broadband oscillation alarm time dynamic adjustment method. Specifically, the broadband oscillation alarm time dynamic adjustment system includes a data acquisition module, a floating coefficient determination module, an adjustment coefficient determination module, and a dynamic adjustment module.

[0057] Among them, the data acquisition module is used to acquire the real-time amplitude, alarm threshold, and initial oscillation alarm time of the oscillation characteristic quantity of the dominant oscillation frequency; the floating coefficient determination module is used to obtain the floating coefficient of the dominant oscillation frequency according to the ratio between the real-time amplitude and the alarm threshold of the oscillation characteristic quantity of the dominant oscillation frequency; wherein, the minimum value of the floating coefficient is 1, and it is positively correlated with the ratio between the real-time amplitude and the alarm threshold of the oscillation characteristic quantity of the dominant oscillation frequency; the adjustment coefficient determination module is used to obtain the dynamic adjustment coefficient of the initial oscillation alarm time according to the ratio between the real-time amplitude and the alarm threshold of the oscillation characteristic quantity of the dominant oscillation frequency and the floating coefficient; wherein, the dynamic adjustment coefficient is positively correlated with both the ratio between the real-time amplitude and the alarm threshold of the oscillation characteristic quantity of the dominant oscillation frequency and the floating coefficient; the dynamic adjustment module is used to divide the initial oscillation alarm time of the dominant oscillation frequency by the dynamic adjustment coefficient of the initial oscillation alarm time to obtain the real-time oscillation alarm time of the dominant oscillation frequency.

[0058] In a possible implementation manner, the initial oscillation alarm time of the dominant oscillation frequency is: a preset fixed time, or the result of multiplying the oscillation period of the dominant oscillation frequency by a preset number of oscillation periods.

[0059] In a possible implementation manner, obtaining a floating coefficient of a dominant oscillation frequency according to a ratio between a real-time amplitude value of an oscillation characteristic quantity of the dominant oscillation frequency and an alarm threshold includes: obtaining the floating coefficient of the dominant oscillation frequency according to a control relationship between a preset data interval and the floating coefficient and in combination with a data interval in which the ratio between the real-time amplitude value of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold is located.

[0060] In a possible implementation manner, obtaining a dynamic adjustment coefficient of an initial oscillation alarm time according to a ratio between a real-time amplitude value of an oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient includes: multiplying the ratio between the real-time amplitude value of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient to obtain the dynamic adjustment coefficient of the initial oscillation alarm time.

[0061] In a possible implementation manner, when there are at least two oscillation characteristic quantities of the dominant oscillation frequency: respectively obtain real-time oscillation alarm times of the dominant oscillation frequency under each oscillation characteristic quantity.

[0062] All relevant contents of each step involved in the embodiments of the foregoing broadband oscillation alarm time dynamic adjustment method can be cited in the function descriptions of the corresponding functional modules of the broadband oscillation alarm time dynamic adjustment system in the embodiments of the present invention, and will not be elaborated herein.

[0063] The division of modules in the embodiments of the present invention is illustrative, and is only a logical function division. In actual implementation, there may be other division methods. In addition, in each embodiment of the present invention, each functional module may be integrated in one processor, may also exist physically alone, or two or more modules may be integrated in one module. The above integrated modules may be implemented in the form of hardware or in the form of software functional modules.

[0064] In another embodiment of the present invention, a computer device is provided. The computer device includes a processor and a memory. The memory is used to store a computer program, and the computer program includes program instructions. The processor is used to execute the program instructions stored in the computer storage medium. The processor may be a Central Processing Unit (CPU), or may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate Arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. It is the computing core and control core of the terminal, and is suitable for implementing one or more instructions. Specifically, it is suitable for loading and executing one or more instructions in the computer storage medium to implement the corresponding method flow or corresponding function. The processor described in the embodiment of the present invention can be used for the operation of the method for dynamically adjusting the broadband oscillation alarm time.

[0065] In another embodiment of the present invention, a storage medium is also provided, specifically a computer-readable storage medium (Memory). The computer-readable storage medium is a memory device in the computer device and is used to store programs and data. It can be understood that the computer-readable storage medium here can include both the built-in storage medium in the computer device and, of course, the extended storage medium supported by the computer device. The computer-readable storage medium provides a storage space, and the operating system of the terminal is stored in this storage space. And, one or more instructions suitable for being loaded and executed by the processor are also stored in this storage space. These instructions can be one or more computer programs (including program codes). It should be noted that the computer-readable storage medium here can be a high-speed RAM memory or a non-volatile memory, such as at least one disk memory. One or more instructions stored in the computer-readable storage medium can be loaded and executed by the processor to implement the corresponding steps of the method for dynamically adjusting the broadband oscillation alarm time in the above embodiments.

[0066] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0067] The present invention is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present invention. It should be understood that each flow and / or block in the flowchart and / or block diagram, as well as the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate means for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0068] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including instruction means that implement the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0069] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process. Thus, the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: still, the specific implementation manners of the present invention can be modified or equivalently replaced, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the protection scope of the claims of the present invention.

Claims

1. A method for dynamically adjusting broadband oscillation alarm time, characterized in that: include: Obtain the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency, the alarm threshold and the initial oscillation alarm time; According to the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold, the floating coefficient of the dominant oscillation frequency is obtained; wherein the minimum value of the floating coefficient is 1, and is positively correlated with the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold; According to the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient, a dynamic adjustment coefficient of the initial oscillation alarm time is obtained; wherein the dynamic adjustment coefficient is positively correlated with the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient; The real-time oscillation alarm time of the dominant oscillation frequency is obtained by dividing the initial oscillation alarm time of the dominant oscillation frequency by the dynamic adjustment coefficient of the initial oscillation alarm time.

2. The method for dynamically adjusting the broadband oscillation alarm time according to claim 1, characterized in that: The initial oscillation alarm time of the dominant oscillation frequency is: The preset fixed time, or the result of multiplying the oscillation period of the dominant oscillation frequency by the preset number of oscillation periods.

3. The method for dynamically adjusting the broadband oscillation alarm time according to claim 1, characterized in that: The step of obtaining the floating coefficient of the dominant oscillation frequency according to the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold comprises: According to the comparison relationship between the preset data interval and the floating coefficient, the floating coefficient of the dominant oscillation frequency is obtained by combining the data interval in which the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold lies.

4. The method for dynamically adjusting the broadband oscillation alarm time according to claim 1, characterized in that: The dynamic adjustment coefficient of the initial oscillation alarm time is obtained according to the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient, including: The dynamic adjustment coefficient of the initial oscillation alarm time is obtained by multiplying the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient.

5. The method for dynamically adjusting the broadband oscillation alarm time according to claim 1, characterized in that: When the oscillation characteristic quantities of the dominant oscillation frequency include at least two types: The real-time oscillation alarm time of the dominant oscillation frequency under each oscillation characteristic quantity is obtained respectively.

6. A broadband oscillation alarm time dynamic adjustment system, characterized in that: include: A data acquisition module, used to obtain the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency, the alarm threshold and the initial oscillation alarm time; A floating coefficient determination module, used to obtain the floating coefficient of the dominant oscillation frequency according to the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold; wherein the minimum value of the floating coefficient is 1, and is positively correlated with the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold; An adjustment coefficient determination module is used to obtain a dynamic adjustment coefficient of the initial oscillation alarm time according to the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient; wherein the dynamic adjustment coefficient is positively correlated with the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient; The dynamic adjustment module is used to divide the initial oscillation alarm time of the dominant oscillation frequency by the dynamic adjustment coefficient of the initial oscillation alarm time to obtain the real-time oscillation alarm time of the dominant oscillation frequency.

7. The broadband oscillation alarm time dynamic adjustment system according to claim 6, characterized in that: The initial oscillation alarm time of the dominant oscillation frequency is: The preset fixed time, or the result of multiplying the oscillation period of the dominant oscillation frequency by the preset number of oscillation periods.

8. The broadband oscillation alarm time dynamic adjustment system according to claim 6, characterized in that: The step of obtaining the floating coefficient of the dominant oscillation frequency according to the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold comprises: According to the comparison relationship between the preset data interval and the floating coefficient, the floating coefficient of the dominant oscillation frequency is obtained by combining the data interval in which the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold lies.

9. The broadband oscillation alarm time dynamic adjustment system according to claim 8, characterized in that: The dynamic adjustment coefficient of the initial oscillation alarm time is obtained according to the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient, including: The dynamic adjustment coefficient of the initial oscillation alarm time is obtained by multiplying the ratio between the real-time amplitude of the oscillation characteristic quantity of the dominant oscillation frequency and the alarm threshold and the floating coefficient.

10. The broadband oscillation alarm time dynamic adjustment system according to claim 6, characterized in that: When the oscillation characteristic quantities of the dominant oscillation frequency include at least two types: The real-time oscillation alarm time of the dominant oscillation frequency under each oscillation characteristic quantity is obtained respectively.

11. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method for dynamically adjusting the wide-band oscillation alarm time as claimed in any one of claims 1 to 5 are implemented.

12. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method for dynamically adjusting the wide-band oscillation alarm time as claimed in any one of claims 1 to 5 are implemented.

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