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

Technical Field

The present disclosure relates to the field of electrical engineering automation technologies, and in particular, to a method and an apparatus for detecting a compensation phase angle, an electronic device, and a medium.

Background

The subsynchronous oscillation phenomenon is one of the common hazards in the power grid. In recent years, with the development of power systems, subsynchronous oscillation phenomena are frequently generated, and many events with serious consequences also occur. In the prior art, subsynchronous oscillation of a generator is suppressed by injecting a subsynchronous suppression signal into a generator end or excitation to generate forward damping. By suppressing subsynchronous oscillation according to the above theory, the compensation phase angle corresponding to each torsional oscillation frequency is an indispensable important parameter.

The compensation phase angle is obtained and mainly corrected by testing the compensation phase angle under different working conditions, but in practical engineering, because the power grid does not allow frequent switching of the working conditions and can not be placed in the working condition with higher danger level, the compensation phase angle cannot be tested in multiple ways, the compensation phase angle cannot be adapted to various working conditions, and the risk of subsynchronous oscillation is higher.

Disclosure of Invention

In view of this, embodiments of the present disclosure provide a method and an apparatus for detecting a compensation phase angle, an electronic device, and a medium, so as to solve the problem in the prior art that a risk of subsynchronous oscillation is high because a plurality of tests on the compensation phase angle cannot be performed and the compensation phase angle cannot be adapted to various working conditions.

In a first aspect of the embodiments of the present disclosure, a method for detecting a compensation phase angle is provided, including: 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.

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 compensation phase angle; the excitation suppression module is configured to perform excitation suppression processing on the target equipment to be detected to obtain initial suppression duration; a generation module configured to generate a 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, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the above method when executing the computer program.

In a fourth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided, which stores a computer program, which when executed by a processor, implements the steps of the above-mentioned method.

Compared with the prior art, the embodiment of the disclosure has the advantages that at least: by exciting and suppressing the subsynchronous current, a better target compensation phase angle is obtained, and the risk caused by subsynchronous oscillation can be greatly reduced.

Drawings

To more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without inventive efforts.

Fig. 1 is a schematic diagram of a corresponding scenario of a detection method for compensating a phase angle provided according to an embodiment of the present disclosure;

fig. 2 is a flow diagram of some embodiments of a detection method of compensating phase angle provided in accordance with embodiments of the present disclosure;

FIG. 3 is a flow chart of further embodiments of another method of detecting a compensated phase angle provided in accordance with embodiments of the present disclosure;

fig. 4 is a schematic structural diagram of a phase angle compensation detecting device according to an embodiment of the present disclosure;

fig. 5 is a schematic diagram of an electronic device provided in accordance with an embodiment of the present disclosure.

Detailed Description

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 is to be understood that the 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 more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the disclosure are for illustration purposes only and are not intended to limit the scope of the disclosure.

It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings. The embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.

It should be noted that the terms "first", "second", and the like in the present disclosure are only used for distinguishing different devices, modules or units, and are not used for limiting the order or interdependence relationship of the functions performed by the devices, modules or units.

It is noted that references to "a", "an", and "the" modifications in this disclosure are intended to be illustrative rather than limiting, and that those skilled in the art will recognize that "one or more" may be used unless the context clearly dictates otherwise.

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

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

Fig. 1 is a schematic diagram of one application scenario of a detection method of compensating phase angle according to some embodiments of the present disclosure.

In the application scenario of fig. 1, first, the computing device 101 may obtain an initial compensated phase angle 102. Second, the computing device 101 may perform excitation suppression processing on the target device under inspection to obtain an initial suppression duration 103. Finally, the computing device 101 may generate a target compensation phase angle 104 based on the initial compensation phase angle 102 and the initial suppression duration 103.

The computing device 101 may be hardware or software. When the computing device is hardware, it may be implemented as a distributed cluster composed of multiple servers or terminal devices, or may be implemented as a single server or a single terminal device. When the computing device is embodied as software, it may be installed in the hardware devices enumerated above. It may be implemented, for example, as multiple software or software modules to provide distributed services, or as a single software or software module. And is not particularly limited herein.

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

With continued reference to fig. 2, a flow 200 of some embodiments of a detection method of compensating phase angle according to the present disclosure is shown. The method may be performed by the computing device 101 of fig. 1. The method for detecting the compensation phase angle comprises the following steps:

step 201, an initial compensation phase angle is obtained.

In some embodiments, the executing subject of the detection method of the compensation phase angle (e.g., the computing device 101 shown in fig. 1) may connect the target device by a wired connection or a wireless connection, and then obtain the initial compensation phase angle. The initial compensation phase angle may refer to the estimated data of the initial compensation phase angle or the related data of the compensation phase angle calculated according to the related calculation method. Setting the initial compensation phase angle may increase the speed at which the target compensation phase angle is obtained. As an example, assuming that the target compensation phase angle is 30 °, the initial compensation phase angle obtained by the setting may be 20 °. If the initial compensation phase angle is not set, the calculation can be started from 0 degrees, and the calculation difference value between 0 degrees and 30 degrees needs to be calculated. If the calculation is performed from the set 20 °, only the calculation difference of 20 ° to 30 ° needs to be calculated. It is obvious that setting the initial compensation phase angle can improve the efficiency of the calculation.

In the actual operation process, a plurality of subsynchronous currents with different frequencies are generated in the line, but only one or a plurality of subsynchronous currents with specific frequencies can cause damage to the target equipment to be detected, so that only the subsynchronous current with at least one different frequency is needed. However, regardless of how many subsynchronous currents with different frequencies need to be processed, the subsynchronous current with one frequency can be selected each time, and the corresponding initial compensation phase angle is set and processed. Of course, at least one of the sub-synchronous currents with different frequencies may be processed in parallel, but the principle of processing several sub-synchronous currents at the same time is similar and is within the protection scope of the present disclosure, which is not exemplified herein.

It should be noted that the wireless connection means may include, but is not limited to, a 3G/4G connection, a WiFi connection, a bluetooth connection, a WiMAX connection, a Zigbee connection, a uwb (ultra wideband) connection, and other wireless connection means now known or developed in the future.

The initial compensation phase angle can be assigned manually, and the test is started; or the test can be automatically started after the equipment to be tested generates subsynchronous oscillation and is recovered to be normal. The initial compensation phase angle can be obtained under both test conditions, and a target compensation phase angle is finally obtained through a series of processing.

In some optional implementation manners of some embodiments, when the compensation phase angle assignment instruction is detected, the execution main body may obtain the initial compensation phase angle based on a preset virtual power grid model by: firstly, obtaining relevant information of a local power grid. The grid related information may refer to the related architecture information of the grid setup, and may include, but is not limited to, one of the following: transformers, transmission lines, consumers or generators, etc. And secondly, generating a corresponding virtual power grid model based on the relevant information of the local power grid. The virtual power grid model can be a virtual model which meets the application requirements of power grid operation monitoring, control, analysis and calculation and the like and expresses the attribute and the connection relation of power grid equipment. And importing the data of each module or component into the virtual power grid model to obtain the relevant data of each line, equipment and the like. And thirdly, generating an initial compensation phase angle based on the virtual power grid model. It should be noted that, after the virtual power grid model is set, the initial compensation phase angle obtained based on the virtual power grid model can be calculated in real time and can be obtained in real time.

In some optional implementation manners of some embodiments, if a compensation phase angle assignment instruction is not detected, after detecting that subsynchronous oscillation occurs to the target device to be detected and a normal state is restored for a preset time period, setting the initial compensation phase angle to a preset default value. The preset time period can be 1 minute, 2 minutes or other time, and is set according to needs. The default value can be 0 ° or other values that fit into the compensation phase angle range. The value range of the compensation phase angle is between 0 degrees and 180 degrees, or between-90 degrees and 90 degrees, and the compensation phase angle is set according to requirements.

Step 202, carrying out excitation suppression treatment on the target equipment to be detected to obtain initial suppression duration.

In some embodiments, the executing body may perform excitation suppression processing on the target device to be inspected to obtain an initial suppression duration. The target device to be inspected may refer to a device that needs to test subsynchronous oscillations. The target inspection device may be a motor. The excitation suppression processing may refer to firstly performing excitation to obtain data related to subsynchronous oscillation of the target device to be detected, then performing suppression processing, and calculating the initial suppression duration when the target device to be detected returns to normal. The initial suppression duration may refer to a duration obtained from the start of suppression processing on the device to be detected to the end of timing when the target device to be detected returns to normal.

And step 203, generating a target compensation phase angle according to the initial compensation phase angle and the initial suppression duration.

In some embodiments, the execution subject may generate the target compensation phase angle according to the initial compensation phase angle and the initial suppression 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 is obtained, and the risk caused by subsynchronous oscillation can be greatly reduced.

With continued reference to fig. 3, a flow 300 of further embodiments of a method of detecting a compensated phase angle according to the present disclosure is shown, which may be performed by computing device 101 in fig. 1. The detection method of the compensation phase angle comprises the following steps:

step 301, an initial compensation phase angle is obtained.

The specific implementation of step 301 and the technical effects thereof may refer to step 201 in the embodiments corresponding to fig. 2, and are not described herein again.

Step 302, when the monitored real-time running state of the power grid indicates normal, the target excitation device is controlled to send out subsynchronous current, the target motor is interfered, and a first real-time torsional vibration amplitude corresponding to the subsynchronous current is obtained.

In some embodiments, the executing body may determine whether the real-time operation state of the power grid indicates normal through the following steps:

firstly, an electric signal and a rotating speed signal of a target motor are obtained. The electrical signal may be a mains-side electrical signal, which typically has a frequency of between 0.2 and 10 hz. The target motor speed signal may refer to a signal related to the target motor speed. The frequency of the speed signal is typically between 10 and 49 hz.

And secondly, when the rotating speed signal does not accord with a preset rotating speed signal index, or when the electric signal does not accord with the preset electric signal index, the real-time power grid running state is expressed as abnormal. When the rotation speed signal is compared with a preset rotation speed signal index, the oscillation amplitude of the rotation speed signal can be compared with the amplitude of the rotation speed signal index, and when the oscillation amplitude of the rotation speed signal is greater than the amplitude of the rotation speed signal index and lasts for a preset duration, the rotation speed signal can be represented to be inconsistent with the rotation speed signal index. Otherwise, when the oscillation amplitude of the rotation speed signal is not greater than the amplitude of the rotation speed signal index, or the duration time that the oscillation amplitude of the rotation speed signal is greater than the amplitude of the rotation speed signal index is less than the duration time index of the rotation speed signal index, it indicates that the rotation speed signal conforms to the rotation speed signal index. The comparison between the electrical signal and the indicator of the electrical signal is similar to the rotation speed signal, and is not repeated here.

And thirdly, when the rotating speed signal accords with the rotating speed signal index and the electric signal accords with the electric signal index, representing the real-time power grid running state as normal.

In some embodiments, when the monitored real-time operation state of the power grid indicates normal, the execution main body may control the target excitation device to emit sub-synchronous current, interfere with the target motor, and acquire a first real-time torsional vibration amplitude corresponding to the sub-synchronous current. The target excitation device may refer to a device for emitting a subsynchronous current. When the real-time running state of the power grid shows normal, the compensation phase angle can be tested. Otherwise, on one hand, the test result may be inaccurate, and on the other hand, other current problems may occur in the line, which affects the overall performance of the power grid. The target motor is interfered, so that the torsional vibration amplitude of the target motor can be increased. The first real-time torsional vibration amplitude may refer to a real-time torsional vibration amplitude of the target motor when the target excitation device is controlled to interfere with the target motor. And acquiring the torsional vibration amplitude of the target motor in real time for subsequent processing.

And 303, when the first real-time torsional vibration amplitude is larger than a preset first test threshold, controlling the target excitation equipment to stop sending out subsynchronous current, controlling the target inhibition equipment to send out inhibition subsynchronous current, inhibiting the target motor, and acquiring a second real-time torsional vibration amplitude and initial inhibition time corresponding to the inhibition subsynchronous current.

In some embodiments, when the first real-time torsional vibration amplitude is greater than a preset first test threshold, the execution main body may control the target excitation device to stop sending the subsynchronous current, control the target suppression device to send the suppression subsynchronous current, suppress the target motor, and obtain a second real-time torsional vibration amplitude and an initial suppression time corresponding to the suppression subsynchronous current. A target suppression device may refer to a device that emits a suppressed subsynchronous current. It should be noted that the target excitation device and the target suppression device may be 2 devices, or may be 2 functions of the same device, and are not limited herein. The initial suppression time may refer to a time point at which the control-target suppression device starts to emit the suppression subsynchronous current. The second real-time torsional vibration amplitude may refer to a real-time torsional vibration amplitude of the target motor after controlling the target excitation device to stop sending the subsynchronous current.

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

In some embodiments, when the second real-time torsional vibration amplitude is smaller than a preset second test threshold, the execution main body may generate an initial suppression duration 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.

And 305, 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.

In some embodiments, the execution main body may sequentially increase the previous compensation phase angle by a preset phase angle adjustment step length based on the initial compensation phase angle to obtain the current increased compensation phase angle. The preset phase angle adjusting step length can be 3 degrees, 5 degrees or other degrees, and is set according to requirements. As an example, assuming that the initial compensation phase angle is 20 °, the step size is 5 °, the compensation phase angle after being increased once is changed from 3 ° to 8 °.

And step 306, carrying out excitation suppression processing on the target equipment to be detected to obtain the growth suppression duration.

In some embodiments, the execution main body may perform excitation suppression processing on the target device to be tested, so as to obtain the current increase suppression duration. The excitation suppression process can refer to the above description, and is not described in detail here.

And 307, when the current increase inhibition duration is greater 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.

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

And 308, sequentially reducing the last 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.

In some embodiments, the executing body may sequentially reduce the previous compensation phase angle by the phase angle adjusting step length based on the second initial compensation phase angle to obtain the reduced compensation phase angle.

And 309, carrying out excitation suppression treatment on the target equipment to be detected to obtain the reduction suppression duration.

In some embodiments, the execution main body may perform excitation suppression processing on the target device to be tested, so as to obtain the reduction suppression duration.

And 310, when the current suppression reducing duration is longer than the second initial suppression duration, determining the previous compensation phase angle as a target compensation phase angle.

In some embodiments, when the present reduction suppression period is longer than the second initial suppression period, the execution subject may determine the previous compensation phase angle as the target compensation phase angle. Because the initial compensation phase angle is increased and judged firstly, and then the increased compensation phase angle is reduced and judged according to times, the optimal compensation phase angle based on the phase angle adjustment step length, namely the target compensation phase angle, can be obtained finally.

And 311, after a preset time, when the real-time torsional vibration amplitude is detected to be not lower than a preset second test threshold, sending a test termination signal to the target inhibition device.

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

After the preset time, when the real-time torsional vibration amplitude is detected to be not lower than the preset second test threshold, it is indicated that the compensation phase angle does not play a role in inhibiting, or plays a role in counteracting, or other strong interferences exist in the circuit. So this test is terminated at this point. The preset time period may be 10 minutes, 20 minutes or other time, and is set according to the actual situation, and is not particularly limited herein. The compensating phase angle works and should be in the opposite direction to the phase angle of the subsynchronous current. As an example, when the phase angle is in the range of-90 ° to 90 °, assuming that the phase angle of the subsynchronous current is 35 °, the angle of the optimum compensation phase angle should be-35 °, and if the compensation phase angle is also set to 35 °, it will not be inhibitory, and even will be counterproductive.

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

All the above optional technical solutions may be combined arbitrarily to form optional embodiments of the present application, and are not described herein again.

The following are embodiments of the disclosed apparatus that may be used to perform embodiments of the disclosed methods. For details not disclosed in the embodiments of the apparatus of the present disclosure, refer to the embodiments of the method of the present disclosure.

With further reference to fig. 4, as an implementation of the above-described methods for the above-described figures, the present disclosure provides some embodiments of a detection apparatus for compensating phase angle, which correspond to those method embodiments described above for fig. 2.

As shown in fig. 4, the phase angle compensation detecting device 400 of some embodiments includes:

the acquisition module 401 of the detection apparatus of the compensated phase angle is configured to acquire an initial compensated phase angle.

And an excitation suppression module 402 of the phase angle compensation detection device is configured to perform excitation suppression processing on the target equipment to be detected, so as to obtain an initial suppression duration.

A generating module 403 of the detecting device of the compensating phase angle is configured to generate a target compensating phase angle according to the initial compensating phase angle and the initial suppression time period.

In some optional implementations of some embodiments, the generation module 403 of the detection apparatus for compensating the phase angle is further configured to: 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 excitation inhibition processing on the target equipment to be tested to obtain the growth inhibition time; 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 phase angle adjustment step length of the last compensation phase angle by taking the second initial compensation phase angle as a basic value to obtain the reduced compensation phase angle; carrying out excitation inhibition treatment on the target equipment to be detected to obtain the reduction inhibition duration; and when the reduction inhibition duration is longer than the second initial inhibition duration, determining the previous compensation phase angle as the target compensation phase angle.

In some optional implementations of some embodiments, the excitation suppression module 402 of the phase angle compensation detection apparatus is further configured to: 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 out subsynchronous current, controlling the target inhibition equipment to send out 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 an initial suppression duration according to the current time and the initial suppression time.

In some optional implementations of some embodiments, the step of obtaining the real-time power grid operating state includes: acquiring an electrical signal and a rotating speed signal of 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 the preset electric signal index, the real-time power grid running state is expressed as abnormal; and 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 running state is expressed as normal.

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

In some optional implementations of some embodiments, the obtaining of the initial compensation phase angle further comprises: if the compensation phase angle assignment instruction is not detected, when 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.

In some optional implementations of some embodiments, after controlling the target suppressing device to emit the suppression subsynchronous current and suppressing the target device-under-inspection, the method further includes: and after the preset time length, when the real-time torsional vibration amplitude is detected to be not lower than a preset second test threshold value, sending a test termination signal to the target inhibition equipment.

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

It will be understood that the elements described in the apparatus 400 correspond to various steps in the method described with reference to fig. 2. Thus, the operations, features and resulting advantages described above with respect to the method are also applicable to the apparatus 400 and the units included therein, and will not be described herein again.

As shown in fig. 5, electronic device 500 may include a processing means (e.g., central processing unit, graphics processor, etc.) 501 that may perform various appropriate actions and processes in accordance with a program stored in a Read Only Memory (ROM)502 or a program loaded from a storage means 508 into a Random Access Memory (RAM) 503. In the RAM 503, various programs and data necessary for the operation of the electronic apparatus 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.

Generally, the following devices may be connected to the I/O interface 505: input devices 506 including, for example, a touch screen, touch pad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, etc.; output devices 507 including, for example, a Liquid Crystal Display (LCD), speakers, vibrators, and the like; storage devices 508 including, for example, magnetic tape, hard disk, etc.; and a communication device 509. The communication means 509 may allow the electronic device 500 to communicate with other devices wirelessly or by wire to exchange data. While fig. 5 illustrates an electronic device 500 having various means, it is to be understood that not all 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 may represent one device or may represent multiple devices as desired.

In particular, according to some embodiments of the present disclosure, the processes described above with reference to the flow diagrams may be implemented as computer software programs. For example, some embodiments of the present disclosure include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method illustrated in the flow chart. In some such embodiments, the computer program may be downloaded and installed from a network via the communication means 509, or installed from the storage means 508, or installed from the ROM 502. The computer program, when executed by the processing device 501, performs the above-described functions defined in the methods of some embodiments of the present disclosure.

It should be noted that the computer readable medium described above in some embodiments of the present disclosure may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In some embodiments of the disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In some embodiments of the present disclosure, however, a computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, optical cables, RF (radio frequency), etc., or any suitable combination of the foregoing.

In some embodiments, the clients, servers may communicate using any currently known or future developed network Protocol, such as HTTP (HyperText Transfer Protocol), and may interconnect with any form or medium of digital data communication (e.g., a communications network). Examples of communication networks include a local area network ("LAN"), a wide area network ("WAN"), the Internet (e.g., the Internet), and peer-to-peer networks (e.g., ad hoc peer-to-peer networks), as well as any currently known or future developed network.

The computer readable medium may be embodied in the apparatus; or may exist separately without being assembled into the electronic device. The computer readable medium carries one or more programs which, when executed by the electronic device, cause the electronic device to: 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. Computer program code for carrying out operations for embodiments of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming 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 type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).

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, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block 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 will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

The units described in some embodiments of the present disclosure may be implemented by software, and may also be implemented by hardware. The described units may also be provided in a processor, and may be described as: the device comprises an acquisition module, an excitation suppression module and a generation module. For example, the acquisition module may also be described as a "module that acquires an initial compensation 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 a chip (SOCs), Complex Programmable Logic Devices (CPLDs), and the like.

The foregoing description is only exemplary of the preferred embodiments of the disclosure and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention in the embodiments of the present disclosure is not limited to the specific combination of the above-mentioned features, but also encompasses other embodiments in which any combination of the above-mentioned features or their equivalents is made without departing from the inventive concept as defined above. For example, the above features and (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure are mutually replaced to form the technical solution.

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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