CN114355039A - Detection method, device, electronic device and medium for compensating phase angle - Google Patents

Abstract

The disclosure relates to the technical field of electrical engineering automation, and provides a detection method and device for a compensation phase angle, electronic equipment and a medium. The method comprises the following steps: acquiring an initial compensation phase angle; carrying out excitation inhibition treatment on target equipment to be detected to obtain initial inhibition duration; and generating a target compensation phase angle according to the initial compensation phase angle and the initial suppression duration. The embodiment of the disclosure obtains a better target compensation phase angle by exciting and inhibiting the subsynchronous current, and can greatly reduce the risk caused by subsynchronous oscillation.

Description

Detection method, device, electronic device and medium for compensating phase angle

technical field

The present disclosure relates to the technical field of electrical engineering automation, and in particular, to a detection method, device, electronic device and medium for compensating phase angle.

Background technique

Subsynchronous oscillation is one of the common hazards in power grids. In recent years, with the development of the power system, the occurrence of subsynchronous oscillation is not uncommon, and events with serious consequences also occur frequently. In the prior art, the generator sub-synchronous oscillation is suppressed by injecting a sub-synchronization suppression signal into the generator end or the excitation to generate positive damping. Through the above theory to suppress subsynchronous oscillation, the compensation phase angle corresponding to each torsional vibration frequency is an indispensable important parameter.

Obtaining the compensation phase angle is mainly corrected by testing the compensation phase angle under different working conditions, but in actual projects, since the power grid does not allow frequent switching of working conditions, the power grid will not be placed in a working condition with a higher level of danger Therefore, it is impossible to perform multiple tests on the compensation phase angle, and it cannot be adapted to various working conditions, and the risk of subsynchronous oscillation is high.

SUMMARY OF THE INVENTION

In view of this, the embodiments of the present disclosure provide a detection method, device, electronic device, and medium for compensating phase angle, so as to solve the problem that in the prior art, due to the inability to perform multiple tests on the compensating phase angle, and the inability to adapt to various working conditions, resulting in There is a greater risk of subsynchronous oscillations.

A first aspect of the embodiments of the present disclosure provides a method for detecting a compensated phase angle, including: obtaining an initial compensated phase angle; performing excitation suppression processing on a target device to be inspected to obtain an initial suppression duration; Suppression time, generate target compensation phase angle.

In a second aspect of the embodiments of the present disclosure, there is provided a detection apparatus for compensating a phase angle, including: an acquisition module configured to acquire an initial compensated phase angle; an excitation suppression module configured to perform excitation suppression processing on a target device to be inspected , to obtain the initial suppression duration; the generating module is configured to generate the target compensation phase angle according to the initial compensation phase angle and the initial suppression duration.

In a third aspect of the embodiments of the present disclosure, an electronic device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the above method when the processor executes the computer program.

In a fourth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the foregoing method are implemented.

Compared with the prior art, the beneficial effects of the embodiments of the present disclosure at least include: by exciting and suppressing the subsynchronous current, a better target compensation phase angle can be obtained, which can greatly reduce the risk caused by the subsynchronous oscillation.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present disclosure more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only for the present disclosure. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic diagram of an application scenario of a detection method for a compensated phase angle provided according to an embodiment of the present disclosure;

FIG. 2 is a flowchart of some embodiments of a detection method for a compensated phase angle provided according to an embodiment of the present disclosure;

FIG. 3 is a flowchart of other embodiments of another detection method for compensated phase angle provided according to an embodiment of the present disclosure;

4 is a schematic structural diagram of a detection device for compensating a phase angle provided according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of an electronic device provided according to an embodiment of the present disclosure.

Detailed ways

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided for a thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes, and are not intended to limit the protection scope of the present disclosure.

In addition, it should be noted that, for the convenience of description, only the parts related to the present disclosure are shown in the drawings. The embodiments of this disclosure and features of the embodiments may be combined with each other without conflict.

It should be noted that concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or interdependence.

It should be noted that the modifications of "a" and "a plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless the context clearly indicates otherwise, they should be understood as "one or a plurality of". multiple".

The names of messages or information exchanged between multiple devices in the embodiments of the present disclosure are only for illustrative purposes, and are not intended to limit the scope of these messages or information.

The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

FIG. 1 is a schematic diagram of an application scenario of a detection method for a compensated phase angle according to some embodiments of the present disclosure.

In the application scenario of FIG. 1 , first, the computing device 101 may acquire the initial compensation phase angle 102 . Next, the computing device 101 may perform excitation suppression processing on the target device to be inspected to obtain an initial suppression duration 103 . Finally, the computing device 101 may generate a target compensation phase angle 104 according to the initial compensation phase angle 102 and the initial suppression period 103 .

It should be noted that the above computing device 101 may be hardware or software. When the computing device is hardware, it can be implemented as a distributed cluster composed of multiple servers or terminal devices, or can be implemented as a single server or a single terminal device. When a computing device is embodied as software, it may be installed in the hardware devices listed above. It can be implemented, for example, as multiple software or software modules for providing distributed services, or as a single software or software module. There is no specific limitation here.

It should be understood that the number of computing devices in FIG. 1 is merely illustrative. There may be any number of computing devices depending on implementation needs.

Continuing to refer to FIG. 2 , a flow 200 of some embodiments of a detection method for a compensated phase angle according to the present disclosure is shown. The method may be performed by computing device 101 in FIG. 1 . The method for detecting the compensation phase angle includes the following steps:

Step 201, obtaining an initial compensation phase angle.

In some embodiments, the executing subject of the compensation phase angle detection method (the computing device 101 shown in FIG. 1 ) may connect to the target device through wired connection or wireless connection, and then obtain the initial compensated phase angle. The initial compensated phase angle may refer to the estimated data of the initial compensated phase angle, or the related data of the compensated phase angle calculated according to the relevant calculation method. Setting the initial compensation phase angle can increase the speed of obtaining the target compensation phase angle. As an example, assuming that the target compensation phase angle is 30°, the initial compensation phase angle obtained by setting may be 20°. If the initial compensation phase angle is not set, the calculation can be started from 0°, and the calculation difference from 0° to 30° needs to be calculated. If calculating from the set 20°, only the calculated difference from 20° to 30° needs to be calculated. Obviously, setting the initial compensation phase angle can improve the calculation efficiency.

In the actual operation process, multiple sub-synchronous currents of different frequencies will be generated in the line, but only one or several sub-synchronous currents of specific frequencies will cause harm to the target device to be inspected, so it is only necessary to target at least one of the above-mentioned sub-synchronous currents. Subsynchronous currents of different frequencies are sufficient. However, no matter how many sub-synchronous currents of different frequencies need to be processed, one of the sub-synchronous currents of one frequency can be selected each time, and the corresponding initial compensation phase angle can be set and processed. Of course, at least one of the above sub-synchronous currents with different frequencies can also be processed in parallel, but no matter how many sub-synchronous currents are processed at the same time, the principles are similar and all fall within the protection scope of the present disclosure, and no examples are given here.

It should be pointed out that the above wireless connection methods may include but are not limited to 3G/4G connection, WiFi connection, Bluetooth connection, WiMAX connection, Zigbee connection, UWB (ultra wideband) connection, and other wireless connection methods currently known or developed in the future .

The initial compensation phase angle can be assigned manually, and the test can be started; it can also be automatically started after the sub-synchronous oscillation of the equipment to be tested occurs and returns to normal. The initial compensation phase angle can be obtained in both test cases, and through a series of processing, the target compensation phase angle can be finally obtained.

In some optional implementations of some embodiments, when the compensation phase angle assignment instruction is detected, the above-mentioned execution body may obtain the initial compensation phase angle based on the preset virtual grid model through the following steps: Step 1: Obtain the local Grid related information. The power grid related information may refer to the related structure information of the power grid construction, which may include but is not limited to one of the following: transformers, transmission lines, users or generators, etc. In the second step, a corresponding virtual power grid model is generated based on the relevant information of the local power grid. A virtual grid model can refer to a virtual model that meets the application requirements of power grid operation monitoring, control, analysis and calculation, and expresses the attributes and connection relationships of power grid equipment. The data of each module or component is imported into the virtual grid model, and the relevant data of each line, equipment, etc. can be obtained. The third step is to generate an initial compensation phase angle based on the virtual grid model. It should be pointed out that, after the setting of the virtual grid model is completed, the initial compensation phase angle obtained based on the virtual grid model can be calculated in real time and can be acquired in real time.

In some optional implementations of some embodiments, if the compensation phase angle assignment instruction is not detected, when it is detected that the target device under test occurs subsynchronous oscillation and returns to a normal state for a preset period of time, the initial compensation The phase angle is set to the preset default value. Wherein, the preset duration may be 1 minute, 2 minutes or other time, which can be set as required. The preset default value can be 0°, or can be other values within the compensation phase angle range. The value range of the compensation phase angle is between 0° and 180°, or between -90° and 90°, which can be set as required.

Step 202 , perform excitation suppression processing on the target device to be tested to obtain an initial suppression duration.

In some embodiments, the above-mentioned execution subject may perform excitation suppression processing on the target device to be inspected to obtain an initial suppression duration. The target device to be tested may refer to a device that needs to be tested for subsynchronous oscillation. The target device to be inspected can be a motor. Excitation suppression processing may refer to firstly performing excitation, acquiring relevant data of subsynchronous oscillation of the target device under inspection, then performing suppression processing, and calculating the initial suppression duration when the target device under inspection returns to normal. The initial suppression time period may refer to the time period obtained from the start of the suppression process on the device to be detected and the time from the stop of the timer when the target device to be tested returns to normal.

Step 203: Generate a target compensation phase angle according to the initial compensation phase angle and the initial suppression duration.

In some embodiments, the aforementioned executive body may generate the target compensation phase angle according to the initial compensation phase angle and the initial suppression time period. The target compensation phase angle may refer to a better compensation phase angle obtained after processing according to the initial compensation phase angle and the initial suppression duration under the current working condition.

The beneficial effects of one of the above embodiments of the present disclosure at least include: by exciting and suppressing the subsynchronous current, a better target compensation phase angle can be obtained, which can greatly reduce the risk of subsynchronous oscillation.

Continuing to refer to FIG. 3 , a flow 300 of other embodiments of a detection method for a compensated phase angle according to the present disclosure is shown, and the method may be performed by the computing device 101 in FIG. 1 . The detection method of the compensated phase angle includes:

Step 301, obtaining an initial compensation phase angle.

For the specific implementation of step 301 and the technical effects brought about, reference may be made to step 201 in those embodiments corresponding to FIG. 2 , and details are not described herein again.

Step 302 , when the monitored real-time operating state of the power grid indicates normal, control the target excitation device to emit a sub-synchronous current to interfere with the target motor, and obtain a first real-time torsional amplitude corresponding to the sub-synchronous current.

In some embodiments, the above-mentioned executive body may determine whether the real-time operating state of the power grid indicates normal by performing the following steps:

The first step is to obtain the electrical signal and the speed signal of the target motor. The electrical signal may be an electrical signal on the grid side, and the frequency of the electrical signal is generally between 0.2 and 10 Hz. The rotational speed signal of the target motor may refer to a signal related to the rotational speed of the target motor. The frequency of the rotational speed signal is generally between 10 and 49 Hz.

In the second step, when the speed signal does not meet the preset speed signal index, or when the electrical signal does not meet the preset electrical signal index, the real-time power grid operation state is indicated as abnormal. When comparing the rotational speed signal with the preset rotational speed signal index, the oscillation amplitude of the rotational speed signal can be compared with the amplitude of the rotational speed signal index. When the oscillation amplitude of the rotational speed signal is greater than the amplitude of the rotational speed signal index, And continuing for a preset period of time may indicate that the speed signal does not meet the speed signal index. Conversely, when the oscillation amplitude of the rotational speed signal is not greater than the amplitude of the rotational speed signal index, or the oscillation amplitude of the rotational speed signal is greater than the duration of the amplitude of the rotational speed signal index, and less than the duration index of the rotational speed signal index, Indicates that the speed signal conforms to the speed signal index. The comparison between the electrical signal and the electrical signal index is similar to the rotational speed signal, and will not be repeated here.

In the third step, when the rotational speed signal conforms to the rotational speed signal index and the electrical signal conforms to the electrical signal index, the real-time power grid operation state is indicated as normal.

In some embodiments, when the monitored real-time operating state of the power grid indicates normal, the above-mentioned executive body may control the target excitation device to emit a sub-synchronous current, interfere with the target motor, and obtain the first real-time torsional vibration corresponding to the sub-synchronous current. magnitude. A target excitation device may refer to a device for emitting a subsynchronous current. The compensation phase angle can be tested only when the real-time operating state of the power grid indicates that it is normal. Otherwise, on the one hand, the test results may be inaccurate, and on the other hand, other current problems may occur in the line, affecting the overall performance of the power grid. Interfering with the target motor can increase the torsional amplitude of the target motor. The first real-time torque amplitude may refer to the real-time torque amplitude of the target motor when the target excitation device is controlled to interfere with the target motor. The torque amplitude of the target motor is acquired in real time for subsequent processing.

Step 303, when the first real-time torsional amplitude is greater than the preset first test threshold, control the target excitation device to stop sending out the subsynchronous current, control the target suppression device to send out the suppressed subsynchronous current, suppress the target motor, and obtain and suppress the target motor. The second real-time torsional amplitude and initial inhibition time corresponding to the subsynchronous current.

In some embodiments, when the first real-time torsional amplitude is greater than the preset first test threshold, the above-mentioned executive body can control the target excitation device to stop emitting the subsynchronous current, control the target suppression device to emit the suppression subsynchronous current, and control the target motor. Suppression is performed, and a second real-time torsional amplitude and initial suppression time corresponding to the suppressed subsynchronous current are obtained. A target suppression device may refer to a device that emits a suppression subsynchronous current. It should be pointed out that the target excitation device and the target suppression device may be two devices, or may be two functions of the same device, which are not specifically limited here. The initial suppression time may refer to the time point at which the control target suppression device starts to emit the suppression subsynchronous current. The second real-time torque amplitude may refer to the real-time torque amplitude of the target motor after the control target excitation device stops emitting the subsynchronous current.

Step 304 , when the second real-time torsional amplitude is smaller than the preset second test threshold, generate an initial suppression duration according to the current time and the initial suppression time.

In some embodiments, when the second real-time torsional amplitude is smaller than the preset second test threshold, the execution subject may generate the initial suppression time period according to the current time and the initial suppression time.

In some optional implementations of some embodiments, the second test threshold is 0.3 to 0.5 times the first test threshold. More preferably, the second test threshold is 0.5 times the first test threshold.

Step 305 , taking the initial compensated phase angle as a basic value, and sequentially increasing the last compensated phase angle by a preset phase angle adjustment step to obtain the compensated phase angle after this increase.

In some embodiments, the above-mentioned executive body may use the initial compensation phase angle as a basic value, and sequentially increase the last compensation phase angle by a preset phase angle adjustment step to obtain the compensated phase angle after this increase. The preset phase angle adjustment step size may be 3°, 5° or other degrees, which can be set as required. As an example, suppose the initial compensation phase angle is 20° and the step size is 5°, then after increasing it once, the increased compensation phase angle changes from 3° to 8°.

Step 306 , perform excitation suppression processing on the target device under test to obtain the current increase suppression duration.

In some embodiments, the above-mentioned execution body may perform excitation suppression processing on the target device under test, so as to obtain the current increase and suppression duration. For the excitation suppression processing, reference may be made to the above related descriptions, which will not be repeated here.

Step 307, when the current growth suppression duration is longer than the initial suppression duration, determine the previous compensation phase angle as the second initial compensation phase angle, and the previous suppression duration as the second initial suppression duration.

In some embodiments, when the current growth suppression duration is longer than the initial suppression duration, the execution subject may determine the previous compensation phase angle as the second initial compensation phase angle, and the previous suppression duration as the second initial suppression duration . When the duration of this increase suppression is longer than the initial suppression duration, it means that the effect efficiency of the compensated phase angle after the increase is lower than that of the compensated phase angle before the increase, so the processing efficiency of the previous compensated phase angle is higher.

Step 308 , taking the second initial compensated phase angle as a basic value, sequentially reducing the last compensated phase angle by the phase angle adjustment step to obtain the current reduced compensated phase angle.

In some embodiments, the above-mentioned execution body may take the second initial compensation phase angle as a basic value, and sequentially reduce the last compensation phase angle by the phase angle adjustment step size, so as to obtain the compensated phase angle after this reduction.

Step 309 , perform excitation suppression processing on the target device under test to obtain the current reduction and suppression duration.

In some embodiments, the above-mentioned execution body may perform excitation suppression processing on the target device under test, so as to obtain the reduced suppression duration this time.

Step 310, when the current reduction and suppression duration is greater than the second initial suppression duration, determine the previous compensation phase angle as the target compensation phase angle.

In some embodiments, when the current reduction and suppression duration is greater than the second initial suppression duration, the executive body may determine the previous compensation phase angle as the target compensation phase angle. Since the initial compensation phase angle is first increased and judged, and then the increased compensation phase angle is decreased and judged according to the number of times, the optimal compensation phase angle based on the adjustment step size of this phase angle can be finally obtained, that is, the target compensation phase angle .

Step 311 , after a preset time period has elapsed, when it is detected that the real-time torsional amplitude is not lower than the preset second test threshold, a termination test signal is sent to the target suppression device.

In some embodiments, after a preset period of time, when it is detected that the real-time torsional amplitude is not lower than the preset second test threshold, the execution subject may send a termination test signal to the target suppression device.

After the preset time period, when it is detected that the real-time torsional amplitude is not lower than the preset second test threshold, it means that the compensation phase angle does not play a suppressing role, or it has a negative effect, or there is other strong interference in the circuit. . Therefore, the test was terminated at this time. The preset duration can be 10 minutes, 20 minutes or other time, which can be set according to the actual situation, and there is no specific limitation here. The compensation phase angle works and should be in the opposite direction to the phase angle of the subsynchronous current. As an example, when the range of the phase angle is -90° to 90°, and the phase angle of the secondary synchronous current is set to be 35°, then the optimal compensation phase angle should be -35°. If the set compensation phase angle is also If it is 35°, then it will not have an inhibitory effect, and it will even have an adverse effect.

The beneficial effects of one of the above embodiments of the present disclosure at least include: after the above steps, a more accurate compensation phase angle can be obtained.

All the above-mentioned optional technical solutions can be combined arbitrarily to form optional embodiments of the present application, which will not be repeated here.

The following are the apparatus embodiments of the present disclosure, which can be used to execute the method embodiments of the present disclosure. For details not disclosed in the apparatus embodiments of the present disclosure, please refer to the method embodiments of the present disclosure.

Referring further to FIG. 4 , as an implementation of the above methods in the above figures, the present disclosure provides some embodiments of a detection apparatus for compensating phase angle, and these apparatus embodiments correspond to those method embodiments described above in FIG. 2 .

As shown in FIG. 4 , the detection apparatus 400 for compensating the phase angle of some embodiments includes:

The acquisition module 401 of the compensation phase angle detection device is configured to acquire the initial compensation phase angle.

The excitation suppression module 402 of the detection device for compensating the phase angle is configured to perform excitation suppression processing on the target device to be detected to obtain an initial suppression duration.

The generating module 403 of the compensation phase angle detection device is configured to generate the target compensation phase angle according to the initial compensation phase angle and the initial suppression time period.

In some optional implementations of some embodiments, the generating module 403 of the compensation phase angle detection device is further configured to: take the initial compensated phase angle as a basic value, and sequentially increase the last compensated phase angle by a preset value Adjust the step size of the phase angle to obtain the compensated phase angle after this increase; perform excitation suppression processing on the target device under test to obtain the current growth suppression duration; when the current growth suppression duration is greater than the initial suppression duration, the previous compensation The phase angle is determined as the second initial compensation phase angle, and the previous suppression duration is determined as the second initial suppression duration; with the second initial compensation phase angle as the basic value, the last compensation phase angle is decreased by the phase angle adjustment step in turn, Obtain the compensated phase angle after this reduction; perform excitation and suppression processing on the target device under test to obtain the duration of this reduction and suppression; when the duration of this reduction and suppression is greater than the second initial suppression duration, determine the previous compensation phase angle as Compensate the phase angle for the target.

In some optional implementations of some embodiments, the excitation suppression module 402 of the detection device for compensating the phase angle is further configured to: when the monitored real-time operating state of the power grid indicates normal, control the target excitation device to emit a subsynchronous current , interfere with the target device to be tested, and obtain the first real-time torsional amplitude corresponding to the sub-synchronous current; when the first real-time torsional amplitude is greater than the preset first test threshold, control the target excitation device to stop sending out the sub-synchronous current , control the target suppression device to send a suppression sub-synchronous current, suppress the target device to be tested, and obtain the second real-time torque amplitude and initial suppression time corresponding to the suppressed sub-synchronous current; when the second real-time torque amplitude is less than the preset value When the second threshold is tested, the initial suppression duration is generated according to the current time and the initial suppression time.

In some optional implementations of some embodiments, the step of acquiring the real-time power grid operating state includes: acquiring an electrical signal and a rotational speed signal of the target device to be inspected; when the rotational speed signal does not meet a preset rotational speed signal index, or, when When the electrical signal does not meet the preset electrical signal index, the real-time power grid operation state is indicated as abnormal; when the speed signal conforms to the speed signal index and the electrical signal conforms to the electrical signal index, the real-time power grid operation state is indicated as normal.

In some optional implementations of some embodiments, the process of obtaining the initial compensation phase angle includes: when the compensation phase angle assignment instruction is detected, obtaining the initial compensation phase angle based on a preset virtual grid model.

In some optional implementations of some embodiments, the process of acquiring the initial compensation phase angle further includes: if the compensation phase angle assignment instruction is not detected, when it is detected that the target device under inspection occurs subsynchronous oscillation and restores the normal state preset After the duration, set the initial compensation phase angle to the preset default value.

In some optional implementations of some embodiments, controlling the target suppressing device to send a suppressing subsynchronous current, and after suppressing the target device to be inspected, the method further includes: after a preset period of time, when it is detected that the real-time torsional amplitude is not low At the preset second test threshold, a termination test signal is sent to the target suppression device.

In some optional implementations of some embodiments, the second test threshold is 0.3 to 0.5 times the first test threshold.

It can be understood that the units recorded in the apparatus 400 correspond to the respective steps in the method described with reference to FIG. 2 . Therefore, the operations, features, and beneficial effects described above with respect to the method are also applicable to the apparatus 400 and the units included therein, and details are not described herein again.

As shown in FIG. 5 , an electronic device 500 may include a processing device (eg, a central processing unit, a graphics processor, etc.) 501 that may be loaded into random access according to a program stored in a read only memory (ROM) 502 or from a storage device 508 Various appropriate actions and processes are executed by the programs in the memory (RAM) 503 . In the RAM 503, various programs and data necessary for the operation of the electronic device 500 are also stored. The processing device 501 , the ROM 502 , and the RAM 503 are connected to each other through a bus 504 . An input/output (I/O) interface 505 is also connected to bus 504 .

Typically, the following devices may be connected to the I/O interface 505: input devices 506 including, for example, a touch screen, touchpad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, etc.; including, for example, a liquid crystal display (LCD), speakers, vibration An output device 507 such as a computer; a storage device 508 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 509 . Communication means 509 may allow electronic device 500 to communicate wirelessly or by wire with other devices to exchange data. While FIG. 5 shows electronic device 500 having various means, it should be understood that not all of the illustrated means are required to be implemented or provided. More or fewer devices may alternatively be implemented or provided. Each block shown in FIG. 5 can represent one device, and can also represent multiple devices as required.

In particular, according to some embodiments of the present disclosure, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, some embodiments of the present disclosure include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the method illustrated in the flowchart. In some such embodiments, the computer program may be downloaded and installed from the network via the communication device 509 , or from the storage device 508 , or from the ROM 502 . When the computer program is executed by the processing device 501, the above-mentioned functions defined in the methods of some embodiments of the present disclosure are performed.

It should be noted that, in some embodiments of the present disclosure, the computer-readable medium described above may be a computer-readable signal medium or a computer-readable storage medium, or any combination of the foregoing two. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus or device, or a combination of any of the above. More specific examples of computer readable storage media may include, but are not limited to, electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read only memory (ROM), erasable Programmable read only memory (EPROM or flash memory), fiber optics, portable compact disk read only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing. In some embodiments of the present disclosure, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. Rather, in some embodiments of the present disclosure, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code therein. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device . Program code embodied on a computer readable medium may be transmitted using any suitable medium including, but not limited to, electrical wire, optical fiber cable, RF (radio frequency), etc., or any suitable combination of the foregoing.

In some embodiments, the client and server can communicate using any currently known or future developed network protocol such as HTTP (HyperText Transfer Protocol), and can communicate with digital data in any form or medium (eg, a communications network) interconnected. Examples of communication networks include local area networks ("LAN"), wide area networks ("WAN"), the Internet (eg, the Internet), and peer-to-peer networks (eg, ad hoc peer-to-peer networks), as well as any currently known or future development network of.

The above-mentioned computer-readable medium may be included in the above-mentioned apparatus; or may exist alone without being assembled into the electronic device. The above-mentioned computer-readable medium carries one or more programs, and when the above-mentioned one or more programs are executed by the electronic device, the electronic device: obtains the initial compensation phase angle; Suppression duration; generating a target compensation phase angle according to the initial compensation phase angle and the initial suppression duration. Computer program code for carrying out operations of some embodiments of the present disclosure may be written in one or more programming languages, including object-oriented programming languages—such as Java, Smalltalk, C++, or a combination thereof, Also included are conventional procedural programming languages - such as the "C" language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer, or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (eg, using an Internet service provider to via Internet connection).

The flowchart and block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code that contains one or more logical functions for implementing the specified functions executable instructions. It should also be noted that, in some alternative implementations, the functions noted in the blocks may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It is also noted that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented in dedicated hardware-based systems that perform the specified functions or operations , or can be implemented in a combination of dedicated hardware and computer instructions.

The units described in some embodiments of the present disclosure may be implemented by means of software, and may also be implemented by means of hardware. The described units can also be provided in the processor, for example, can be described as: acquisition module, excitation suppression module and generation module. For example, the acquisition module may also be described as "a module for acquiring the initial compensated phase angle".

The functions described herein above may be performed, at least in part, by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: Field Programmable Gate Arrays (FPGAs), Application Specific Integrated Circuits (ASICs), Application Specific Standard Products (ASSPs), Systems on Chips (SOCs), Complex Programmable Logical Devices (CPLDs) and more.

The above descriptions are merely some preferred embodiments of the present disclosure and illustrations of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solution formed by the specific combination of the above-mentioned technical features, and should also cover, without departing from the above-mentioned inventive concept, the above-mentioned Other technical solutions formed by any combination of technical features or their equivalent features. For example, a technical solution is formed by replacing the above-mentioned features with the technical features disclosed in the embodiments of the present disclosure (but not limited to) with similar functions.

Claims (10)

1. A method for detecting a compensated phase angle, comprising:

acquiring an initial compensation phase angle;

carrying out excitation inhibition treatment on target equipment to be detected to obtain initial inhibition duration;

and generating a target compensation phase angle according to the initial compensation phase angle and the initial suppression duration.

2. The method of claim 1, wherein generating a target compensation phase angle based on the initial compensation phase angle and the initial suppression duration comprises:

sequentially increasing the previous compensation phase angle by a preset phase angle adjusting step length by taking the initial compensation phase angle as a basic value to obtain the increased compensation phase angle;

carrying out the excitation inhibition treatment on the target equipment to be detected to obtain the growth inhibition duration;

when the current increase inhibition duration is longer than the initial inhibition duration, determining the previous compensation phase angle as a second initial compensation phase angle, and determining the previous inhibition duration as a second initial inhibition duration;

sequentially reducing the previous compensation phase angle by the phase angle adjusting step length by taking the second initial compensation phase angle as a basic value to obtain the reduced compensation phase angle;

carrying out the excitation inhibition treatment on the target equipment to be detected to obtain the reduction inhibition duration;

and when the current reduction inhibition duration is longer than the second initial inhibition duration, determining the previous compensation phase angle as the target compensation phase angle.

3. The method according to claim 1, wherein the performing excitation suppression processing on the target device to be inspected to obtain an initial suppression duration comprises:

when the monitored real-time running state of the power grid indicates normal, controlling target excitation equipment to send out subsynchronous current, interfering target equipment to be detected, and acquiring a first real-time torsional vibration amplitude corresponding to the subsynchronous current;

when the first real-time torsional vibration amplitude is larger than a preset first test threshold value, controlling the target excitation equipment to stop sending subsynchronous current, controlling the target inhibition equipment to send inhibition subsynchronous current, inhibiting the target equipment to be detected, and acquiring a second real-time torsional vibration amplitude and initial inhibition time corresponding to the inhibition subsynchronous current;

and when the second real-time torsional vibration amplitude is smaller than a preset second test threshold, generating the initial suppression duration according to the current time and the initial suppression time.

4. The method according to claim 3, wherein the step of obtaining the real-time grid operating state comprises:

acquiring an electrical signal and a rotating speed signal of the target equipment to be detected;

when the rotating speed signal does not accord with a preset rotating speed signal index, or when the electric signal does not accord with a preset electric signal index, the real-time power grid running state is represented as abnormal;

when the rotating speed signal accords with the rotating speed signal index and the electric signal accords with the electric signal index, the real-time power grid operation state is expressed as normal.

5. The method of claim 1, wherein the obtaining of the initial compensating phase angle comprises:

and when a compensation phase angle assignment instruction is detected, obtaining the initial compensation phase angle based on a preset virtual power grid model.

6. The method of claim 5, further comprising:

if the compensation phase angle assignment instruction is not detected, after the subsynchronous oscillation of the target equipment to be detected is detected and the normal state is recovered for a preset time, the initial compensation phase angle is set to be a preset default value.

7. The method according to claim 3, wherein the controlling the target suppressing device to emit a suppressed subsynchronous current further comprises, after suppressing the target device-under-inspection:

and after a preset time length, when the detected real-time torsional vibration amplitude is not lower than a preset second test threshold value, sending a test termination signal to the target inhibition equipment.

8. The method of claim 3, wherein the second test threshold is 0.3 to 0.5 times the first test threshold.

9. An electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the steps of the method according to any of claims 1 to 8 are implemented when the computer program is executed by the processor.

10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 8.

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