Rectification equipment processing method and device, equipment, storage medium and program product

Abstract

The invention provides a rectifying equipment processing method and device, equipment, a storage medium and a program product. Relates to the power supply field. The method comprises the following steps: acquiring voltages input to a plurality of rectifying devices by a power supply network at a plurality of continuous moments, wherein the power supply network is used for supplying power to the plurality of rectifying devices; according to the voltage, a first parameter and a second parameter of the power supply network are determined, the first parameter is used for indicating the frequency change rate of the voltage, and the second parameter is used for indicating the distortion degree of the voltage signal; according to the first parameter and the second parameter, determining an adjustment instruction of current loops of the plurality of rectification devices; and processing the plurality of rectification devices according to the adjustment instruction. Thus, through the method, the adjustment instruction of the current loop of the rectification equipment can be determined according to the frequency change rate of the voltage of the power supply network and the distortion degree of the voltage signal, and then the rectification equipment is dynamically adjusted according to the adjustment instruction, so that the risk of mis-tripping caused by harmonic resonance is reduced, and the stability of the rectification equipment is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of power supply, and in particular to a rectifier device processing method and device, equipment, storage medium and program product. BACKGROUND

[0002] In some scenarios, a rectifier device can be used to supply power to a device to be powered. For example, in the scenario of hydrogen production by electrolysis of water, a plurality of rectifier devices can be used to supply power to a proton exchange membrane electrolyzer.

[0003] When multiple rectifier devices are started at the same time, the superposition of alternating current side harmonics and frequency fluctuations will cause the rectifier device to misjudge as a short circuit or circuit overload, resulting in protective tripping and causing the rectifier device to fail to start or even be damaged. In related technologies, a fixed closing time interval can be set to avoid multiple rectifier devices starting at the same time.

[0004] However, in the above method, when the grid frequency is temporarily offset, the stability of the rectifier device operation is low. SUMMARY

[0005] The present application provides a rectifier device processing method, device, equipment, storage medium and program product to solve the problem of low stability of rectifier device operation.

[0006] In a first aspect, the present application provides a rectifier device processing method, comprising:

[0007] Obtaining the voltage input by a power supply network to a plurality of rectifier devices at a plurality of continuous time points, the power supply network being used to supply power to the plurality of rectifier devices;

[0008] According to the voltage, determining a first parameter and a second parameter of the power supply network, the first parameter being used to indicate the frequency variation rate of the voltage, and the second parameter being used to indicate the distortion degree of the voltage signal;

[0009] According to the first parameter and the second parameter, determining an adjustment instruction of a current loop of the plurality of rectifier devices;

[0010] According to the adjustment instruction, processing the plurality of rectifier devices.

[0011] In a possible design, for any one rectifier device; according to the first parameter and the second parameter, determining an adjustment instruction of a current loop of the plurality of rectifier devices, comprising:

[0012] When the first parameter is greater than or equal to a first threshold value, and / or the second parameter is greater than or equal to a second threshold value, determining a first current of the rectifier device;

[0013] The preset current of the rectifier device, the preset proportional coefficient of the power supply network and the preset integral coefficient of the power supply network are acquired, the preset proportional coefficient is used to indicate the ability of the power supply network to respond to current deviation when stable, and the preset integral coefficient is used to indicate the ability of the power supply network to eliminate current deviation when stable.

[0014] The adjustment instruction is determined according to the first current, the preset current, the preset proportional coefficient and the preset integral coefficient.

[0015] In a possible design, the adjustment instruction is determined according to the first current, the preset current, the preset proportional coefficient and the preset integral coefficient, including:

[0016] The target proportional coefficient used to indicate the ability of the rectifier device to respond to current deviation is determined according to the preset proportional coefficient and the first parameter;

[0017] The target integral coefficient used to indicate the ability of the rectifier device to eliminate current deviation is determined according to the target proportional coefficient, the preset proportional coefficient and the preset integral coefficient;

[0018] The current difference between the first current and the preset current is determined.

[0019] The adjustment instruction is determined according to the target proportional coefficient, the target integral coefficient and the current difference.

[0020] In a possible design, after the first parameter and the second parameter of the power supply network are determined according to the voltage, the method further includes:

[0021] The number of the plurality of rectifier devices is acquired.

[0022] The time window in which the plurality of rectifier devices are allowed to start is determined according to the first parameter.

[0023] The start interval of the plurality of rectifier devices is determined according to the time window and the number.

[0024] The plurality of rectifier devices are started according to the start interval.

[0025] In a possible design, for any one rectifier device; after the plurality of rectifier devices are started according to the start interval, the method further includes:

[0026] The rated current of the rectifier device, the second current of the rectifier device and the third parameter are acquired, the third parameter is used to indicate the sensitivity of the current of the rectifier device to the distortion of the voltage signal;

[0027] The current threshold of the rectifier device is determined according to the rated current, the third parameter and the second parameter, the current threshold is used to indicate the current threshold value of the start protection operation of the rectifier device;

[0028] The rectifier device is safely protected according to the second current and the current threshold.

[0029] In one possible design, the rectifier is protected based on a second current and a current threshold, including:

[0030] When the second current is greater than or equal to the current threshold, a fourth parameter indicating the rate of change of the voltage of the rectifier and a fifth parameter indicating the degree of distortion of the voltage of the rectifier are determined.

[0031] If the fourth parameter is greater than or equal to the first threshold and / or the fifth parameter is greater than or equal to the second threshold, the rectifier is processed according to the first strategy, which is used to gradually reduce the current of the rectifier.

[0032] If the fourth parameter is less than the first threshold and the fifth parameter is less than the second threshold, the rectifier is powered off.

[0033] In one possible design, the rectifier is processed according to the first strategy, including:

[0034] Determine the attenuation coefficient of the rectifier based on the rated current;

[0035] The current of the rectifier is adjusted according to the attenuation coefficient.

[0036] Secondly, this application provides a processing apparatus for a rectifier, comprising: an acquisition module, a first determination module, a second determination module, and a processing module, wherein...

[0037] The acquisition module is used to acquire the voltage input from the power supply network to multiple rectifier devices at multiple consecutive moments, and the power supply network is used to supply power to the multiple rectifier devices;

[0038] The first determining module is used to determine a first parameter and a second parameter of the power supply network based on the voltage. The first parameter is used to indicate the frequency change rate of the voltage, and the second parameter is used to indicate the degree of distortion of the voltage signal.

[0039] The second determining module is used to determine the adjustment instructions for the current loop of multiple rectifier devices based on the first parameter and the second parameter.

[0040] The processing module is used to process multiple rectifier devices according to adjustment instructions.

[0041] In one possible design, the second determining module is specifically used for,

[0042] When the first parameter is greater than or equal to the first threshold and / or the second parameter is greater than or equal to the second threshold, the first current of the rectifier is determined;

[0043] The preset current of the rectifier, the preset proportional coefficient of the power supply network, and the preset integral coefficient of the power supply network are obtained. The preset proportional coefficient is used to indicate the ability of the power supply network to respond to current deviation when it is stable, and the preset integral coefficient is used to indicate the ability of the power supply network to eliminate current deviation when it is stable.

[0044] The adjustment command is determined based on the first current, the preset current, the preset proportional coefficient, and the preset integral coefficient.

[0045] In one possible design, the second determining module is specifically used for,

[0046] Based on the preset proportional coefficient and the first parameter, a target proportional coefficient is determined to indicate the rectifier's ability to respond to current deviations.

[0047] Based on the target proportional coefficient, the preset proportional coefficient, and the preset integral coefficient, determine the target integral coefficient used to indicate the rectifier's ability to eliminate current deviation;

[0048] Determine the current difference between the first current and the preset current;

[0049] The adjustment command is determined based on the target proportional coefficient, the target integral coefficient, and the current difference.

[0050] In one possible design, a startup module is also included.

[0051] The startup module is used to obtain the number of multiple rectifier devices;

[0052] Based on the first parameter, determine the time window that allows multiple rectifier devices to start;

[0053] The start-up interval of multiple rectifier devices is determined based on the time window and quantity.

[0054] Multiple rectifier devices are started up according to the start-up interval.

[0055] One possible design also includes a safety protection module.

[0056] The safety protection module is used to acquire the rated current of the rectifier, the second current of the rectifier, and the third parameter. The third parameter is used to indicate the sensitivity of the rectifier's current to the distortion of the voltage signal.

[0057] Based on the rated current, the third parameter, and the second parameter, the current threshold of the rectifier is determined. The current threshold is used to indicate the critical current value for the rectifier to initiate protection operation.

[0058] The rectifier is protected based on the second current and the current threshold.

[0059] In one possible design, the safety protection module is specifically used for,

[0060] When the second current is greater than or equal to the current threshold, a fourth parameter indicating the rate of change of the voltage of the rectifier and a fifth parameter indicating the degree of distortion of the voltage of the rectifier are determined.

[0061] If the fourth parameter is greater than or equal to the first threshold and / or the fifth parameter is greater than or equal to the second threshold, the rectifier is processed according to the first strategy, which is used to gradually reduce the current of the rectifier.

[0062] If the fourth parameter is less than the first threshold and the fifth parameter is less than the second threshold, the rectifier is powered off.

[0063] In one possible design, the safety protection module is specifically used for,

[0064] Determine the attenuation coefficient of the rectifier based on the rated current;

[0065] The current of the rectifier is adjusted according to the attenuation coefficient.

[0066] Thirdly, this application provides an electronic device comprising: at least one processor and a memory; the memory storing computer-executable instructions; and at least one processor executing the computer-executable instructions stored in the memory, such that the at least one processor performs the processing method of the rectifier device as described in the first aspect and various possible designs of the first aspect.

[0067] Fourthly, this application provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the processing method of the rectifier device as described in the first aspect and various possible designs of the first aspect.

[0068] Fifthly, this application provides a computer program product, including a computer program, which, when executed by a processor, implements the processing method of the rectifier device as described in the first aspect and various possible designs of the first aspect.

[0069] The rectifier processing method, apparatus, device, storage medium, and program product provided in this application allow electronic equipment to acquire the voltage input to the multiple rectifiers from the power supply network at multiple consecutive moments when multiple rectifiers need to be powered. The power supply network supplies power to the multiple rectifiers. Based on the voltage, a first parameter and a second parameter of the power supply network are determined. The first parameter indicates the frequency change rate of the voltage, and the second parameter indicates the degree of distortion of the voltage signal. Based on the first and second parameters, adjustment instructions for the current loops of the multiple rectifiers are determined. The multiple rectifiers are then processed according to the adjustment instructions. In this way, by using the above method, the adjustment instructions for the current loops of the rectifiers can be determined based on the frequency change rate of the power supply network voltage and the degree of distortion of the voltage signal. Furthermore, the rectifiers can be dynamically adjusted according to the adjustment instructions, reducing the risk of false tripping caused by harmonic resonance and thus improving the stability of the rectifiers. Attached Figure Description

[0070] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0071] Figure 1 This is a schematic diagram of the system architecture provided for an embodiment of this application;

[0072] Figure 2 A flowchart illustrating a processing method for a rectifier device provided in an embodiment of this application;

[0073] Figure 3 A schematic diagram illustrating the process of determining the adjustment instruction provided in an embodiment of this application;

[0074] Figure 4 A schematic diagram illustrating the safety protection process of the rectifier provided in this application embodiment;

[0075] Figure 5 A schematic diagram of the structure of a processing device for a rectifier provided in an embodiment of this application;

[0076] Figure 6 A schematic diagram of the processing apparatus of another rectifier provided in an embodiment of this application;

[0077] Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0078] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0079] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0080] The collection, storage, use, processing, transmission, provision, and disclosure of user data and other information involved in the technical solution of this application all comply with the provisions of relevant laws and regulations and do not violate public order and good morals.

[0081] It should be noted that in the embodiments of this application, certain software, components, models and other existing solutions in the industry may be mentioned. These should be regarded as exemplary and are only intended to illustrate the feasibility of implementing the technical solution of this application. However, it does not mean that the applicant has used or necessarily used the solution.

[0082] To facilitate understanding, the following will be combined with... Figure 1 The system architecture applicable to the embodiments of this application will be described.

[0083] Figure 1 This is a schematic diagram of the system architecture provided for an embodiment of this application. Please refer to [link / reference]. Figure 1 This includes the equipment to be powered, multiple rectifiers, and electronic equipment. The equipment to be powered requires a large power supply to start up. That is, multiple rectifiers can meet the high current and high voltage input requirements of the equipment to be powered by parallel power supply. When multiple rectifiers start up at the same time, harmonic resonance or voltage distortion will be formed, causing the rectifiers to trip for protection. Electronic equipment can be used to control the time-sharing start-up of multiple rectifiers and control the operating parameters of multiple rectifiers, thereby avoiding the tripping problem caused by harmonic superposition and frequency fluctuation when multiple rectifiers are running in parallel.

[0084] In related technologies, when multiple rectifiers start simultaneously, AC side harmonic superposition and frequency fluctuations occur, causing the rectifiers to misinterpret as short circuits or overloads, resulting in protective tripping, leading to rectifier startup failure or even damage. Setting a fixed closing time interval can prevent simultaneous startup of multiple rectifiers. However, with this method, the stability of the rectifier operation is low when there is a momentary shift in the grid frequency.

[0085] To address the aforementioned technical problems, in this embodiment, when multiple rectifier devices need to be powered, the electronic device can acquire the voltage input to the multiple rectifier devices from the power supply network at multiple consecutive moments. The power supply network is used to supply power to the multiple rectifier devices. Based on the voltage, a first parameter and a second parameter of the power supply network are determined. The first parameter indicates the frequency change rate of the voltage, and the second parameter indicates the degree of distortion of the voltage signal. Based on the first and second parameters, adjustment instructions for the current loops of the multiple rectifier devices are determined. The multiple rectifier devices are then processed according to the adjustment instructions. Thus, through this method, the adjustment instructions for the current loops of the rectifier devices can be determined based on the frequency change rate of the power supply network voltage and the degree of distortion of the voltage signal. Furthermore, the rectifier devices can be dynamically adjusted according to the adjustment instructions, reducing the risk of false tripping caused by harmonic resonance and thereby improving the stability of the rectifier devices.

[0086] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0087] Figure 2 This is a schematic flowchart illustrating a processing method for a rectifier device provided in an embodiment of this application. Please refer to... Figure 2 As shown, the method may include the following steps:

[0088] S201. Obtain the voltage input from the power supply network to multiple rectifier devices at multiple consecutive moments.

[0089] The execution subject of this application embodiment can be an electronic device or a processing device of a rectifier device disposed in an electronic device. The electronic device can be a device with on-device computing capabilities; for example, it can be a server, a terminal device, etc. The processing device of the rectifier device can be implemented through software or through a combination of software and hardware.

[0090] A rectifier can be used to convert alternating current (AC) to direct current (DC); that is, a rectifier can provide a stable DC power supply to a device that requires DC power. For example, a rectifier can be a rectifier cabinet.

[0091] A power supply network can be used to supply power to multiple rectifier devices. The voltage input to the multiple rectifier devices by the power supply network can refer to a three-phase AC voltage signal; for example, voltage can refer to the instantaneous value of the three-phase voltage waveform of the power supply network.

[0092] It is understandable that the voltage input to the power supply network at multiple consecutive moments can be obtained by continuously sampling the three-phase AC voltage input to the power supply network.

[0093] S202. Determine the first and second parameters of the power supply network based on the voltage.

[0094] The first parameter can be used to indicate the rate of change of voltage frequency. Understandably, the first parameter can represent the rate of change of the voltage frequency of the power supply network per unit time. For example, the rate of frequency drop when the power supply network frequency fluctuates from 50Hz to 49.8Hz is 0.2Hz / s.

[0095] Optionally, the first parameter can be calculated using a phase-locked loop (PLL) in the electronic device. Assuming f(t) represents the instantaneous frequency of the voltage calculated by the PLL at time t, f(tT) represents the instantaneous frequency of the voltage in the previous control cycle at time t, and T represents the preset control cycle of the digital signal processor (DSP) controller in the electronic device, then the first parameter... It can be represented as:

[0096]

[0097] The second parameter can be used to indicate the degree of distortion of the voltage signal. Understandably, the second parameter can represent the ratio of the sum of the squares of the effective values ​​of each harmonic in the voltage of the power supply network to the effective value of the fundamental frequency. For example, the second parameter can be 10%.

[0098] It should be noted that the main sources of harmonics on the AC input side of rectifiers include discontinuous conduction triggered by rectification, nonlinear superposition caused by the simultaneous operation of multiple rectifiers, and the coupling of background harmonics of the power supply network itself with the load. These harmonics are mainly concentrated in the low-order range. Therefore, in order to reduce the computational overhead of electronic equipment, Fourier analysis can be performed on the preset harmonic range of the power supply network. Preferably, the preset harmonic range can be the 2nd to 13th harmonics.

[0099] Optionally, the second parameter can be determined as follows: Assume i is the minimum value of the preset harmonic range, j is the maximum value of the preset harmonic range, and n ranges from i to j. The effective value of the nth harmonic voltage. Let THD be the effective value of the first harmonic voltage (i.e., the fundamental frequency). Then the second parameter THD can be expressed as:

[0100]

[0101] After determining the first and second parameters of the power supply network, the process also includes: obtaining the number of multiple rectifier devices; determining a time window for allowing the multiple rectifier devices to start based on the first parameter; determining the start interval of the multiple rectifier devices based on the time window and the number; and performing start-up processing on the multiple rectifier devices according to the start interval.

[0102] The time window allowing multiple rectifier devices to start can be determined as follows: Assume K is the calibration coefficient for the time window. To prevent small quantities from being divided by zero, If the first parameter is used, then the time window... It can be represented as:

[0103]

[0104] The calibration coefficient of the time window is a preset value. The calibration coefficient can be used to ensure that the time window is sufficient to accommodate the system delay and does not exceed the time corresponding to the allowable phase error. The zero-prevention value can be an extremely small positive number to avoid the situation where the formula is meaningless when the rate of change of frequency (the first parameter) approaches 0, i.e. the denominator is zero, thus improving the stability of the calculation.

[0105] The start-up interval of multiple rectifiers can be determined as follows: assuming Let N be the time window, and N be the number of rectifier devices, then the startup interval is... It can be represented as:

[0106]

[0107] In this way, since the time window is dynamically adjusted based on the first parameter, the voltage frequency change rate, rather than a fixed time window, it can ensure that when the frequency fluctuation is large, the trigger time tolerance is strictly limited to avoid multiple rectifier devices triggering simultaneously; while when the frequency fluctuation is stable, the time window is widened to improve the synchronization fault tolerance of multiple devices, thereby avoiding the risk of harmonic superposition and tripping caused by frequency fluctuation.

[0108] S203. Based on the first parameter and the second parameter, determine the adjustment command for the current loop of multiple rectifier devices.

[0109] Adjustment commands refer to key command signals used in rectifier equipment to control the turn-on time of power semiconductor devices. Adjustment commands can adjust the DC voltage or current output of the rectifier equipment, thereby optimizing the current loop control performance of the rectifier equipment.

[0110] For any rectifier, the adjustment command for the current loop of the rectifier can be determined as follows: when the first parameter is greater than or equal to the first threshold and / or the second parameter is greater than or equal to the second threshold, determine the first current of the rectifier; obtain the preset current of the rectifier, the preset proportional coefficient of the power supply network, and the preset integral coefficient of the power supply network, and determine the adjustment command based on the first current, the preset current, the preset proportional coefficient, and the preset integral coefficient.

[0111] Among them, the first current can refer to the magnitude of the current output by the rectifier at the current moment; the preset proportional coefficient can be used to indicate the ability of the power supply network to respond to current deviation when it is stable; and the preset integral coefficient can be used to indicate the ability of the power supply network to eliminate current deviation when it is stable.

[0112] Understandably, when the first parameter is greater than or equal to the first threshold, the current frequency fluctuation can be considered large. When the second parameter is greater than or equal to the second threshold, the current voltage waveform distortion can be considered severe. That is, the current power supply network is in poor operating condition, and the current loop of the rectifier needs to be adjusted to avoid the rectifier's protective tripping.

[0113] S204. Process multiple rectifier devices according to the adjustment instructions.

[0114] The rectifier may include a rectifier bridge, which may be composed of controllable devices such as thyristors. It can be used to convert AC to DC. The conduction of the thyristor requires an external trigger signal. The trigger angle is defined as the electrical angle between the zero-crossing point of the AC voltage (i.e., the moment when the positive and negative half cycles of the sine wave alternate) and the moment when the thyristor is actually triggered to conduct. That is, the adjustment command can correspond to the electrical angle of the trigger angle, and the adjustment command can be used to adjust the electrical angle of the trigger angle.

[0115] Understandably, the smaller the trigger angle corresponding to the adjustment command, the longer the rectifier bridge conducts during the positive (or negative) half-cycle of the AC voltage, and the higher the rectified output DC voltage or current; the larger the trigger angle corresponding to the adjustment command, the shorter the rectifier bridge conducts, and the lower the rectified output DC voltage or current.

[0116] In electronic devices, the DSP controller can convert the trigger angle into a specific trigger time and generate a corresponding pulse signal (e.g., the gate trigger pulse of a thyristor) through the trigger circuit. After the trigger pulse is amplified, it drives the control electrode of the rectifier bridge, causing the control electrode to conduct at the specified time. After the rectifier bridge conducts according to the adjustment command, the DC voltage or current output by the rectifier bridge changes accordingly, thereby completing the adjustment of the rectifier equipment.

[0117] In this embodiment, when multiple rectifier devices need to be powered, the electronic device can acquire the voltage input to the multiple rectifier devices from the power supply network at multiple consecutive moments. The rectifier devices can be used to convert AC power to DC power, and the power supply network can be used to supply power to the multiple rectifier devices. Based on the voltage, a first parameter and a second parameter of the power supply network are determined. The first parameter can be used to indicate the frequency change rate of the voltage, and the second parameter can be used to indicate the degree of distortion of the voltage signal. Based on the first parameter and the second parameter, adjustment instructions for the current loop of the multiple rectifier devices are determined. The adjustment instructions can adjust the DC voltage or current output by the rectifier devices, thereby optimizing the current loop control performance of the rectifier devices. The multiple rectifier devices are processed according to the adjustment instructions. In this way, through the above method, the adjustment instructions for the current loop of the rectifier devices can be determined according to the frequency change rate of the power supply network voltage and the degree of distortion of the voltage signal. Then, the rectifier devices can be dynamically adjusted according to the adjustment instructions, reducing the risk of false tripping caused by harmonic resonance, thereby improving the stability of the rectifier devices.

[0118] Based on any of the above embodiments, the following, in conjunction with Figure 3 The process of determining the adjustment instructions is explained in detail.

[0119] Figure 3 This is a schematic diagram illustrating the process of determining the adjustment instruction provided in an embodiment of this application. Please refer to... Figure 3 The method may include:

[0120] S301. For any rectifier, when the first parameter is greater than or equal to the first threshold and / or the second parameter is greater than or equal to the second threshold, determine the first current of the rectifier.

[0121] S302. Obtain the preset current of the rectifier, the preset proportional coefficient of the power supply network, and the preset integral coefficient of the power supply network.

[0122] The preset proportional coefficient can be used to indicate the power supply network's ability to respond to current deviations when it is stable, and the preset integral coefficient can be used to indicate the power supply network's ability to eliminate current deviations when it is stable.

[0123] It should be noted that the execution steps of steps S301 and S302 can be referred to step S203 above, and will not be repeated here.

[0124] S303. Determine the target proportional coefficient based on the preset proportional coefficient and the first parameter.

[0125] The target proportionality coefficient can be used to indicate the rectifier's ability to respond to current deviations.

[0126] The target proportional coefficient can be determined as follows: assuming This is a preset proportional coefficient. As the first parameter, If the preset weights are used, then the target ratio coefficient is... It can be represented as:

[0127]

[0128] The preset weight can be used to indicate the degree of decay of the target proportional coefficient as a function of the first parameter, and the preset weight is greater than zero.

[0129] Understandably, when the rate of change of voltage frequency increases, i.e. when the first parameter increases, the target proportional coefficient will decrease accordingly, thereby suppressing the system gain, reducing the amplification effect of harmonic resonance, and thus avoiding current loop instability.

[0130] S304. Determine the target integral coefficient based on the target proportional coefficient, the preset proportional coefficient, and the preset integral coefficient.

[0131] The target integral coefficient can be used to indicate the rectifier's ability to eliminate current deviations.

[0132] The target integral coefficients can be determined as follows: assuming they are... Target ratio coefficient, This is a preset proportional coefficient. If the preset integral coefficients are used, then the target integral coefficients are... It can be represented as:

[0133]

[0134] It is understandable that the anti-interference performance of rectifiers can be improved by dynamically adjusting the target integral coefficient and target proportional coefficient.

[0135] S305. Determine the adjustment command based on the target proportional coefficient, target integral coefficient, first current, and preset current.

[0136] Adjustment commands can be used to indicate when the rectifier is turned on, thereby adjusting the DC voltage or current input to the rectifier.

[0137] The current difference can be determined based on the first current and the preset current.

[0138] The adjustment instruction can be determined in the following way: assuming, The target proportionality coefficient, The target integral coefficient, For the first current, Given the preset current and s as the differential operator, the adjustment command is... It can be represented as:

[0139]

[0140] Understandably, since the target proportional coefficient and target integral coefficient are dynamically adjusted in accordance with the first parameter (i.e., the frequency change rate of the voltage), the adjustment command of the rectifier also changes dynamically in accordance with the adjustment of the target proportional coefficient and target integral coefficient, thereby enabling adaptive adjustment of the rectifier and improving stability in harmonic interference scenarios.

[0141] exist Figure 3 In the illustrated embodiment, when the first parameter is greater than or equal to a first threshold, and / or the second parameter is greater than or equal to a second threshold, the rectifier needs to be adjusted. This involves determining the first current of the rectifier, obtaining the preset current of the rectifier, the preset proportional coefficient of the power supply network, and the preset integral coefficient of the power supply network. The preset proportional coefficient indicates the power supply network's ability to respond to current deviations when stable, and the preset integral coefficient indicates the power supply network's ability to eliminate current deviations when stable. Based on the preset proportional coefficient and the first parameter, a target proportional coefficient is determined, which indicates the rectifier's ability to respond to current deviations. Based on the target proportional coefficient, the preset proportional coefficient, and the preset integral coefficient, a target integral coefficient is determined, which indicates the rectifier's ability to eliminate current deviations. Finally, an adjustment command is determined based on the target proportional coefficient, the target integral coefficient, the first current, and the preset current. In this way, by using the above method, the target proportional coefficient and the target integral coefficient can be dynamically adjusted when the frequency change rate of voltage (first parameter) and / or the degree of distortion of voltage signal (second parameter) are large, thereby improving the anti-interference performance of the rectifier. Furthermore, the adjustment command can be dynamically adjusted according to the target proportional coefficient and the target integral coefficient, thereby adaptively adjusting the rectifier and improving the stability of the rectifier in harmonic interference scenarios.

[0142] Based on any of the above embodiments, the following, in conjunction with Figure 4 The safety protection process for rectifier equipment is explained in detail.

[0143] Figure 4 This is a schematic diagram illustrating the safety protection process of the rectifier equipment provided in this embodiment of the application. Please refer to... Figure 4 The method may include:

[0144] S401. For any rectifier, obtain the rated current, the second current, and the third parameter of the rectifier.

[0145] The third parameter can be used to indicate how sensitive the current of the rectifier is to the distortion of the voltage signal.

[0146] The rated current and third parameter of the rectifier can be preset by the user.

[0147] The second current of a rectifier can refer to the current value of the rectifier.

[0148] S402. Determine the current threshold of the rectifier based on the rated current, the third parameter, and the second parameter.

[0149] The current threshold can be used to indicate the critical current value at which the rectifier equipment initiates protection operation, and the protection operation can refer to the protective tripping of the rectifier equipment.

[0150] The current threshold can be determined as follows: assuming, Rated current, As the third parameter, If it is the second parameter, then the current threshold It can be represented as:

[0151]

[0152] Understandably, when the second current is less than the current threshold, the current rectifier is considered to be operating normally. When the second current is greater than or equal to the current threshold, the current rectifier may be considered to have operational safety risks, and safety protection measures need to be implemented to reduce these risks.

[0153] S403. When the second current is greater than or equal to the current threshold, determine the fourth and fifth parameters.

[0154] The fourth parameter indicates the rate of change of the voltage of the rectifier, and the fifth parameter indicates the degree of voltage distortion of the rectifier.

[0155] S404. Determine whether the fourth parameter is less than the first threshold and whether the fifth parameter is less than the second threshold.

[0156] If so, then execute S405.

[0157] If not, then execute S406.

[0158] S405. Power off the rectifier equipment.

[0159] S406. Process the rectifier according to the first strategy.

[0160] The first strategy can be used to gradually reduce the current of the rectifier.

[0161] Understandably, when the frequency change rate and / or the degree of voltage distortion are large, the actual current of the rectifier may contain more harmonic components. These harmonics will increase the effective value of the current, but it is not necessarily a current overload caused by equipment failure. Therefore, the tripping current threshold can be increased to avoid tripping due to misjudgment of faults caused by harmonic interference, thus ensuring the continuous operation of the system.

[0162] For example, the first strategy may include: determining the attenuation coefficient of the rectifier based on the rated current, and adjusting the current of the rectifier according to the attenuation coefficient. The attenuation coefficient can be a value preset by the user, and the attenuation coefficient is a value greater than zero.

[0163] Assuming, The attenuation coefficient is... Let t be the rated current and t be the time after the first strategy is activated. Then, the current is calculated according to the following formula. Adjustments are made to gradually reduce the current of the rectifier:

[0164]

[0165] exist Figure 4 In the illustrated embodiment, for any rectifier device, the rated current, second current, and third parameter of the rectifier device are obtained. The third parameter can be used to indicate the sensitivity of the rectifier device's current to voltage signal distortion. Based on the rated current, third parameter, and second parameter, a current threshold of the rectifier device is determined. The current threshold can be used to indicate the critical current value for initiating protection operation of the rectifier device. Protection operation can refer to the protective tripping of the rectifier device. When the second current is greater than or equal to the current threshold, a fourth parameter and a fifth parameter are determined. The fourth parameter can indicate the frequency change rate of the rectifier device's voltage, and the fifth parameter can indicate the degree of voltage distortion of the rectifier device. It is determined whether the fourth parameter is less than the first threshold and the fifth parameter is less than the second threshold. If so, the rectifier device is de-energized; otherwise, the current of the rectifier device is gradually reduced according to the first strategy. In this way, the current threshold of the rectifier can be dynamically determined according to the degree of voltage signal distortion, thereby avoiding the problem of false tripping caused by a fixed current threshold. At the same time, when the fourth parameter is less than the first threshold and the fifth parameter is less than the second threshold, soft shutdown is initiated first, that is, the current is gradually reduced according to the first strategy instead of direct tripping, thereby avoiding sudden impacts and maintaining system operation as much as possible, thus improving the stability of the rectifier.

[0166] Figure 5 This is a schematic diagram of the processing apparatus of a rectifier provided in an embodiment of this application. Please refer to... Figure 5 The processing unit 10 of the rectifier includes: an acquisition module 11, a first determination module 12, a second determination module 13, and a processing module 14, wherein,

[0167] The acquisition module 11 is used to acquire the voltage input from the power supply network to multiple rectifier devices at multiple consecutive moments, and the power supply network is used to supply power to the multiple rectifier devices.

[0168] The first determining module 12 is used to determine a first parameter and a second parameter of the power supply network based on the voltage. The first parameter is used to indicate the frequency change rate of the voltage, and the second parameter is used to indicate the degree of distortion of the voltage signal.

[0169] The second determining module 13 is used to determine the adjustment instructions for the current loop of multiple rectifier devices based on the first parameter and the second parameter.

[0170] The processing module 14 is used to process multiple rectifier devices according to adjustment instructions.

[0171] The processing apparatus of the rectifier provided in this application embodiment can execute the technical solution shown in the above method embodiment. Its implementation principle and beneficial effects are similar, and will not be described again here.

[0172] In one possible design, the second determining module 13 is specifically used for,

[0173] When the first parameter is greater than or equal to the first threshold and / or the second parameter is greater than or equal to the second threshold, the first current of the rectifier is determined;

[0174] The preset current of the rectifier, the preset proportional coefficient of the power supply network, and the preset integral coefficient of the power supply network are obtained. The preset proportional coefficient is used to indicate the ability of the power supply network to respond to current deviation when it is stable, and the preset integral coefficient is used to indicate the ability of the power supply network to eliminate current deviation when it is stable.

[0175] The adjustment command is determined based on the first current, the preset current, the preset proportional coefficient, and the preset integral coefficient.

[0176] In one possible design, the second determining module 13 is specifically used for,

[0177] Based on the preset proportional coefficient and the first parameter, a target proportional coefficient is determined to indicate the rectifier's ability to respond to current deviations.

[0178] Based on the target proportional coefficient, the preset proportional coefficient, and the preset integral coefficient, determine the target integral coefficient used to indicate the rectifier's ability to eliminate current deviation;

[0179] Determine the current difference between the first current and the preset current;

[0180] The adjustment command is determined based on the target proportional coefficient, the target integral coefficient, and the current difference.

[0181] Figure 6 This is a schematic diagram of the processing apparatus of another rectifier device provided in an embodiment of this application. Figure 5 Based on this, please refer to Figure 6 The rectifier processing unit 10 further includes: a start-up module 15 and a safety protection module 16, wherein,

[0182] The startup module 15 is used to obtain the number of multiple rectifier devices;

[0183] Based on the first parameter, determine the time window that allows multiple rectifier devices to start;

[0184] The start-up interval of multiple rectifier devices is determined based on the time window and quantity.

[0185] Multiple rectifier devices are started up according to the start-up interval.

[0186] The safety protection module 16 is used to acquire the rated current of the rectifier, the second current of the rectifier, and the third parameter. The third parameter is used to indicate the sensitivity of the current of the rectifier to the distortion of the voltage signal.

[0187] Based on the rated current, the third parameter, and the second parameter, the current threshold of the rectifier is determined. The current threshold is used to indicate the critical current value for the rectifier to initiate protection operation.

[0188] The rectifier is protected based on the second current and the current threshold.

[0189] In one possible design, the safety protection module 16 is specifically used for,

[0190] When the second current is greater than or equal to the current threshold, a fourth parameter indicating the rate of change of the voltage of the rectifier and a fifth parameter indicating the degree of distortion of the voltage of the rectifier are determined.

[0191] If the fourth parameter is greater than or equal to the first threshold and / or the fifth parameter is greater than or equal to the second threshold, the rectifier is processed according to the first strategy, which is used to gradually reduce the current of the rectifier.

[0192] If the fourth parameter is less than the first threshold and the fifth parameter is less than the second threshold, the rectifier is powered off.

[0193] In one possible design, the safety protection module 16 is specifically used for,

[0194] Determine the attenuation coefficient of the rectifier based on the rated current;

[0195] The current of the rectifier is adjusted according to the attenuation coefficient.

[0196] The processing apparatus of the rectifier provided in this application embodiment can execute the technical solution shown in the above method embodiment. Its implementation principle and beneficial effects are similar, and will not be described again here.

[0197] Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 7As shown, the electronic device 20 may include: a transceiver 21, a processor 22, and a memory 23.

[0198] Processor 22 executes computer execution instructions stored in memory, causing processor 22 to perform the scheme in the above embodiments. Processor 22 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0199] The memory 23 is connected to the processor 22 via the system bus and completes communication between them. The memory 23 is used to store computer program instructions.

[0200] Transceiver 21 can be used to obtain the task to be run and the configuration information of the task to be run.

[0201] The system bus can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The system bus can be divided into address bus, data bus, control bus, etc. For ease of representation, only one thick line is used in the diagram, but this does not indicate that there is only one bus or one type of bus. Transceivers are used to enable communication between database access devices and other computers (e.g., clients, read-write libraries, and read-only libraries). Memory may include random access memory (RAM) and may also include non-volatile memory.

[0202] The electronic device provided in this application embodiment can be the terminal device described in the above embodiments.

[0203] This application also provides a chip for executing instructions, which is used to execute the technical solution of the rectifier processing method in the above embodiments.

[0204] This application also provides a computer-readable storage medium storing computer instructions. When the computer instructions are executed on a computer, the computer performs the technical solution of the rectifier processing method described in the above embodiments.

[0205] This application also provides a computer program product, which includes a computer program stored in a computer-readable storage medium. At least one processor can read the computer program from the computer-readable storage medium. When the at least one processor executes the computer program, it can implement the technical solution of the rectifier processing method in the above embodiments.

[0206] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative; for instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or modules, and may be electrical, mechanical, or other forms.

[0207] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to implement the solution of this embodiment according to actual needs.

[0208] Furthermore, the functional modules in the various embodiments of this application can be integrated into one processing unit, or each module can exist physically separately, or two or more modules can be integrated into one unit. The unit composed of the above modules can be implemented in hardware or in the form of hardware plus software functional units.

[0209] The integrated modules described above, implemented as software functional modules, can be stored in a computer-readable storage medium. These software functional modules, stored in a storage medium, include several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute some steps of the methods of the various embodiments of this application.

[0210] It should be understood that the aforementioned processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly manifested as execution by a hardware processor, or execution by a combination of hardware and software modules within the processor.

[0211] The memory may include high-speed RAM, and may also include non-volatile storage (NVM), such as at least one disk storage device, and may also be a USB flash drive, external hard drive, read-only memory, disk or optical disc, etc.

[0212] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0213] The aforementioned storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0214] An exemplary storage medium is coupled to a processor, enabling the processor to read information from and write information to the storage medium. Alternatively, the storage medium can be an integral part of the processor. The processor and storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and storage medium can exist as discrete components in an electronic control unit or main control device.

[0215] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0216] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A processing method of a rectifying device, characterized by, The method comprises: obtaining a voltage inputted by a power supply network to a plurality of rectifier devices at a plurality of continuous time points, the power supply network being used to supply power to the plurality of rectifier devices; determining a first parameter and a second parameter of the power supply network according to the voltage, the first parameter being used to indicate a frequency variation rate of the voltage, and the second parameter being used to indicate a distortion degree of the voltage signal; determining an adjustment instruction of a current loop of the plurality of rectifier devices according to the first parameter and the second parameter; processing the plurality of rectifier devices according to the adjustment instruction.

2. The method of claim 1, wherein, For any one rectifier device; determining an adjustment instruction of a current loop of the plurality of rectifier devices according to the first parameter and the second parameter comprises: when the first parameter is greater than or equal to a first threshold value, and / or the second parameter is greater than or equal to a second threshold value, determining a first current of the rectifier device; obtaining a preset current of the rectifier device, a preset proportional coefficient of the power supply network, and a preset integral coefficient of the power supply network, the preset proportional coefficient being used to indicate an ability of the power supply network to respond to a current deviation when the power supply network is stable, and the preset integral coefficient being used to indicate an ability of the power supply network to eliminate the current deviation when the power supply network is stable; determining the adjustment instruction according to the first current, the preset current, the preset proportional coefficient, and the preset integral coefficient.

3. The method of claim 2, wherein, Determining the adjustment instruction according to the first current, the preset current, the preset proportional coefficient, and the preset integral coefficient comprises: determining a target proportional coefficient used to indicate an ability of the rectifier device to respond to the current deviation according to the preset proportional coefficient and the first parameter; determining a target integral coefficient used to indicate an ability of the rectifier device to eliminate the current deviation according to the target proportional coefficient, the preset proportional coefficient, and the preset integral coefficient; determining a current difference value between the first current and the preset current; determining the adjustment instruction according to the target proportional coefficient, the target integral coefficient, and the current difference value.

4. The method according to any one of claims 1 to 3, characterized in that, After determining the first parameter and the second parameter of the power supply network according to the voltage, the method further comprises: obtaining a number of the plurality of rectifier devices; determining a time window in which the plurality of rectifier devices are allowed to start according to the first parameter; determining a starting interval of the plurality of rectifier devices according to the time window and the number; starting the plurality of rectifier devices according to the starting interval.

5. The method of claim 4, wherein, For any one rectifier device; after starting the plurality of rectifier devices according to the starting interval, the method further comprises: obtaining a rated current of the rectifier device, a second current of the rectifier device, and a third parameter, the third parameter being used to indicate a sensitive degree of the rectifier device to distortion of the voltage signal; determining a current threshold of the rectifier device according to the rated current, the third parameter, and the second parameter, the current threshold being used to indicate a current threshold value of a start protection operation of the rectifier device; safely protecting the rectifier device according to the second current and the current threshold.

6. The method of claim 5, wherein, Safely protecting the rectifier device according to the second current and the current threshold comprises: determining a fourth parameter indicating a rate of frequency change of the voltage of the rectifier device and a fifth parameter indicating a distortion degree of the voltage of the rectifier device when the second current is greater than or equal to the current threshold value; if the fourth parameter is greater than or equal to a first threshold value and / or the fifth parameter is greater than or equal to a second threshold value, processing the rectifier device according to a first strategy, the first strategy being used to gradually reduce the current of the rectifier device; if the fourth parameter is less than the first threshold value and the fifth parameter is less than the second threshold value, processing the rectifier device according to a power-off strategy.

7. The method of claim 6, wherein, processing the rectifier device according to the first strategy comprises: determining a decay coefficient of the rectifier device according to the rated current; adjusting the current of the rectifier device according to the decay coefficient.

8. A processing device of a rectifier device, characterized by comprises: an acquisition module, a first determination module, a second determination module and a processing module, wherein the acquisition module is configured to acquire voltages input by a power supply network to a plurality of rectifier devices at a plurality of continuous time points, the power supply network being configured to supply power to the plurality of rectifier devices; the first determination module is configured to determine a first parameter and a second parameter of the power supply network according to the voltages, the first parameter being used to indicate a rate of frequency change of the voltages, and the second parameter being used to indicate a distortion degree of the voltage signals; the second determination module is configured to determine an adjustment instruction of a current loop of the plurality of rectifier devices according to the first parameter and the second parameter; the processing module is configured to process the plurality of rectifier devices according to the adjustment instruction.

9. An electronic device, comprising: comprises: a processor, and a memory connected to the processor in communication; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are executed by the processor to implement the method according to any one of claims 1 to 7.

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