High-voltage motor setting and checking method and electronic equipment

Abstract

The invention relates to a high-voltage motor setting and checking method and electronic equipment. The method comprises the following steps: acquiring basic operation parameters of a motor; according to the basic operation parameters of the motor, obtaining protection setting parameters of the motor; and checking the protection setting parameters of the motor through a spreadsheet. According to the embodiment of the invention, the automatic accounting and verification of the motor protection setting parameters can be realized, the workload and error probability of manual calculation are reduced, and in addition, the use of professional setting calculation software is avoided, so that the production cost can be reduced, and the production cost is saved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of motor protection, and in particular to a high-voltage motor setting and calibration method and electronic equipment. Background Art

[0002] The existing thermal power plant motor setting value verification calculation method is usually performed by employees based on the original word version of the setting calculation report. The calculation is based on the "DLT 1502-2016 Plant Power Relay Protection Setting Calculation Guidelines" combined with the motor protection device manufacturer's technical instructions. During the annual calculation process, when the system and unit do not change, the verification work is simple and convenient, but when the system and unit parameters change, the verification workload is very large, and the error rate of manual calculation during the setting process is high. Summary of the invention

[0003] The purpose of the present invention is to provide a high-voltage motor setting and verification method and electronic equipment, which can realize automatic calculation and verification of motor protection setting parameters, reduce the workload of manual calculation and the probability of error.

[0004] In order to achieve the above object, according to a first aspect of an embodiment of the present disclosure, a high voltage motor setting and verification method is provided, the method comprising:

[0005] Obtaining basic operating parameters of the motor;

[0006] According to the basic operating parameters of the motor, obtaining the protection setting parameters of the motor;

[0007] The protection setting parameters of the motor are checked by electronic spreadsheet.

[0008] Optionally, the basic operating parameters include: the rated current of the motor, the CT ratio of the motor, and the primary short-circuit current of the motor, the protection setting parameters of the motor include the secondary rated current and the minimum short-circuit current, and the obtaining the protection setting parameters of the motor according to the basic operating parameters of the motor includes:

[0009] Obtaining the secondary rated current according to the ratio of the rated current of the motor to the CT transformation ratio of the motor;

[0010] The minimum short-circuit current is obtained according to the ratio of the primary short-circuit current of the motor to the CT transformation ratio of the motor.

[0011] Optionally, the protection setting parameters of the motor include differential protection sensitivity, and obtaining the protection setting parameters of the motor according to the basic operating parameters of the motor includes:

[0012] Obtaining a minimum differential protection current of the motor according to the secondary rated current of the motor;

[0013] The differential protection sensitivity of the motor is obtained according to the ratio of the minimum short-circuit current to the minimum differential protection current.

[0014] Optionally, the method further comprises:

[0015] When the differential protection sensitivity of the motor is greater than a first threshold, it is determined that the differential protection setting parameters of the motor are normal.

[0016] Optionally, the protection setting parameters of the motor include current quick-break protection sensitivity, and obtaining the protection setting parameters of the motor according to the basic operating parameters of the motor includes:

[0017] According to the secondary rated current of the motor, obtaining the instantaneous protection current setting value of the motor;

[0018] The current quick-break protection sensitivity of the motor is obtained according to the ratio of the minimum short-circuit current to the quick-break protection current constant.

[0019] Optionally, the method further comprises:

[0020] When the current quick-break protection sensitivity of the motor is greater than a second threshold, it is determined that the quick-break protection current setting parameters of the motor are normal.

[0021] Optionally, the protection setting parameters of the motor include a thermal overload protection action time, and the obtaining the protection setting parameters of the motor according to the basic operating parameters of the motor further includes:

[0022] Obtaining an overload time constant of the motor according to basic operating parameters of the motor;

[0023] According to the basic operating parameters of the motor, obtaining the heating equivalent current of the motor;

[0024] The thermal overload protection action time is obtained according to the overload time constant, the heating equivalent current and the rated current.

[0025] Optionally, the basic operating parameters further include: an allowable overload time of the motor and an overload current of the motor, and obtaining the overload time constant of the motor includes:

[0026] The overload time constant of the motor is obtained according to the overload allowable time, the overload current and the rated current.

[0027] Optionally, the basic operating parameters further include: a positive sequence current and a positive sequence current heating coefficient of the motor, and a negative sequence current and a negative sequence current heating coefficient of the motor, and obtaining the heating equivalent current of the motor includes:

[0028] The heating equivalent current of the motor is obtained according to the positive-sequence current, the positive-sequence current heating coefficient, the negative-sequence current and the negative-sequence current heating coefficient.

[0029] According to a second aspect of an embodiment of the present disclosure, there is provided an electronic device, including:

[0030] a memory having a computer program stored thereon;

[0031] A processor is used to execute the computer program in the memory to implement the steps of any one of the methods in the first aspect.

[0032] In summary, the disclosed embodiment provides a high-voltage motor setting and verification method, the method comprising: obtaining basic operating parameters of the motor; obtaining protection setting parameters of the motor according to the basic operating parameters of the motor; and verifying the protection setting parameters of the motor through an electronic spreadsheet. The disclosed embodiment can realize automatic calculation and verification of motor protection setting parameters, reduce the workload of manual calculation and the probability of error, and avoid the use of professional setting calculation software, thereby reducing production costs and saving production costs.

[0033] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0035] Figure 1 The present invention is a flow chart of a high-voltage motor setting and verification method according to an exemplary embodiment.

[0036] Figure 2 The present invention is a flow chart of a high-voltage motor setting and verification method according to an exemplary embodiment.

[0037] Figure 3 The present invention is a flow chart of a high-voltage motor setting and verification method according to an exemplary embodiment.

[0038] Figure 4 The present invention is a flow chart of a high-voltage motor setting and verification method according to an exemplary embodiment.

[0039] Figure 5The present invention is a flow chart of a high-voltage motor setting and verification method according to an exemplary embodiment.

[0040] Figure 6 The present invention is a flow chart of a high-voltage motor setting and verification method according to an exemplary embodiment.

[0041] Figure 7 The present invention is a flow chart of a high-voltage motor setting and verification method according to an exemplary embodiment.

[0042] Figure 8 The present invention is a flow chart of a high-voltage motor setting and verification method according to an exemplary embodiment.

[0043] Fig. 9 The present invention is a flow chart of a high-voltage motor setting and verification method according to an exemplary embodiment.

[0044] Fig.10 It is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0045] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0046] It should be understood that the term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0047] It should be noted that the concepts of "first", "second", etc. mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units. The modifications of "one" and "multiple" mentioned in the present disclosure are illustrative and not restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more". In the description of the present disclosure, unless otherwise specified, "multiple" refers to two or more than two, and other quantifiers are similar; "at least one item", "one item or multiple items" or similar expressions refer to any combination of these items, including any combination of single items or plural items.

[0048] Although operations or steps are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood that it is required to perform these operations or steps in the specific order shown or in a serial order, or to perform all the operations or steps shown to obtain the desired results. In the embodiments of the present disclosure, these operations or steps can be performed in series; these operations or steps can also be performed in parallel; or some of these operations or steps can be performed.

[0049] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only for illustrative purposes and are not used to limit the scope of these messages or information. It is understandable that before using the technical solutions disclosed in the embodiments of the present disclosure, the type, scope of use, and usage scenarios of the personal information involved in the present disclosure should be informed to the user in an appropriate manner in accordance with relevant laws and regulations and the user's authorization should be obtained.

[0050] First, the application scenario of the present disclosure is explained. The motor relay protection device is one of the most important secondary equipment in the power system and is the guarantee for the safe operation of the power system. Numerous actual tests at home and abroad have proved that large-scale system accidents involving a wide range of power outages are mostly directly or indirectly related to the incorrect operation of the motor relay protection device. Therefore, it is an important condition to ensure the safe operation of the power grid to reasonably arrange the motor relay protection setting and improve the operation management level of the motor relay protection.

[0051] Necessity of checking the setting of motor protection: 1. Grid-connected power plants should carefully check the setting coordination relationship between grid-related protection and grid protection according to the provisions of the "Guidelines for Setting Calculation of Relay Protection for Large Motor Transformers" (DL / T684), the operation of the power grid and the technical conditions of the main equipment, and carry out comprehensive recalculation and verification of the setting values ​​of the equipment under their jurisdiction every year according to the requirements of the dispatching department. When the grid structure, line parameters and short-circuit current levels change, the configuration and setting of relevant grid-related protection should be checked in time to avoid incorrect protection action. 2. Power plants should perform setting calculations for motor relay protection in accordance with relevant regulations, and carefully check the coordination relationship with system protection. Strengthen the setting calculation and management of relay protection for main equipment and plant systems, arrange special personnel to comprehensively recalculate and verify the setting values ​​of the equipment under their jurisdiction every year, and pay attention to preventing the expansion of the scope of accidents due to incorrect action of plant system protection.

[0052] However, the current motor protection setting parameter verification work is mostly done manually, which is arduous, requires a lot of calculations, and is prone to errors. Therefore, there is an urgent need for a new high-voltage motor setting verification method to automatically complete the motor protection setting parameter verification work, reducing the manual calculation workload and the probability of error. The present disclosure is described below in conjunction with specific embodiments.

[0053] Figure 1FIG. 1 is a flow chart of a method for setting and checking a high-voltage motor according to an exemplary embodiment. Figure 1 As shown, the embodiment of the present disclosure provides a high-voltage motor setting and verification method, which may include the following steps:

[0054] In step S10, basic operating parameters of the motor are obtained.

[0055] In this step, basic operating parameters of the motor are obtained. Exemplarily, the basic operating parameters of the motor include at least one of the following: rated power, rated current, rated voltage, motor CT ratio and motor starting multiple of the motor.

[0056] In step S20, protection setting parameters of the motor are obtained according to the basic operating parameters of the motor.

[0057] In this step, the protection setting parameters of the motor are obtained according to the basic operating parameters of the motor. Exemplarily, the protection setting parameters of the motor include the secondary rated current and the minimum short-circuit current, and the basic operating parameters may include: the rated current of the motor, the CT ratio of the motor, and the primary short-circuit current of the motor. The secondary rated current of the motor can be obtained by the ratio of the rated current of the motor to the CT ratio of the motor (Formula 1), and the minimum short-circuit current of the motor can also be obtained by the ratio of the primary short-circuit current of the motor to the CT ratio of the motor (Formula 2).

[0058] In step S30, the protection setting parameters of the motor are checked by means of an electronic spreadsheet.

[0059] In this step, the protection setting parameters of the motor are automatically checked and calculated through an electronic spreadsheet. Exemplarily, the first basic operating parameter of the motor, such as the rated current value of the motor, can be entered in the first column of the electronic spreadsheet, the second basic operating parameter of the motor, such as the CT ratio of the motor, can be entered in the second column of the electronic spreadsheet, and the calculation formula of the protection setting parameters of the motor can be entered in the third column of the electronic spreadsheet (such as Formula 1). Then, when the basic operating parameter data of the motor is filled in the first and second columns of the electronic spreadsheet, the protection setting parameters of the motor, such as the secondary rated current of the motor, will be automatically calculated in the third column of the electronic spreadsheet. In addition, the normal range value of the protection setting parameters of the motor can be set in the electronic spreadsheet. When the automatically calculated protection setting parameters of the motor exceed the normal range value, the exceeding parameter is highlighted or changed to a striking font color, such as red, to remind the user. Thereby achieving the purpose of automatically checking the protection setting parameters.

[0060] In summary, the disclosed embodiment provides a high-voltage motor setting and verification method, the method comprising: obtaining basic operating parameters of the motor; obtaining protection setting parameters of the motor according to the basic operating parameters of the motor; and verifying the protection setting parameters of the motor through an electronic spreadsheet. The disclosed embodiment can realize automatic calculation and verification of motor protection setting parameters, reduce the workload of manual calculation and the probability of error, and avoid the use of professional setting calculation software, thereby reducing production costs and saving production costs.

[0061] Figure 2 FIG. 1 is a flow chart of a method for setting and checking a high-voltage motor according to an exemplary embodiment. Figure 2 As shown, the basic operating parameters include: the rated current of the motor, the CT ratio of the motor and the primary short-circuit current of the motor, the protection setting parameters of the motor include the secondary rated current and the minimum short-circuit current, and the protection setting parameters of the motor are obtained according to the basic operating parameters of the motor, which may include the following steps:

[0062] In step S201, the secondary rated current is obtained according to the ratio of the rated current of the motor to the CT transformation ratio of the motor.

[0063] In this step, the secondary rated current Ie is obtained according to the ratio of the rated current Ia of the motor to the CT ratio T of the motor. That is, Ie = Ia / T Formula 1

[0064] In step S202, the minimum short-circuit current is obtained according to the ratio of the primary short-circuit current of the motor to the CT transformation ratio of the motor.

[0065] In this step, the minimum short-circuit current Imin is obtained according to the ratio of the primary short-circuit current Ic of the motor and the CT transformation ratio T of the motor. That is, Imin=Ic / T Formula 2

[0066] Figure 3 FIG. 1 is a flow chart of a method for setting and checking a high-voltage motor according to an exemplary embodiment. Figure 3 As shown, the protection setting parameters of the motor include differential protection sensitivity, and obtaining the protection setting parameters of the motor according to the basic operating parameters of the motor may include the following steps:

[0067] In step S203, the minimum differential protection current of the motor is obtained according to the secondary rated current of the motor.

[0068] In this step, the minimum differential protection current Id of the motor is obtained according to the secondary rated current Ie of the motor. Exemplarily, the minimum differential protection current Id of the motor can be obtained by the following formula:

[0069] Id=0.3×Ie formula 3

[0070] In step S204, the differential protection sensitivity of the motor is obtained according to the ratio of the minimum short-circuit current to the minimum differential protection current.

[0071] In this step, the differential protection sensitivity Kd of the motor is obtained according to the ratio of the minimum short-circuit current Imin to the minimum differential protection current Id. Exemplarily, the differential protection sensitivity Kd of the motor can be obtained by the following formula:

[0072] Kd=Imin / Id Formula 4

[0073] Figure 4 FIG. 1 is a flow chart of a method for setting and checking a high-voltage motor according to an exemplary embodiment. Figure 4 As shown, the method may further include the following steps:

[0074] In step S40, when the differential protection sensitivity of the motor is greater than a first threshold, it is determined that the differential protection setting parameters of the motor are normal.

[0075] In this step, when the differential protection sensitivity Kd of the motor is greater than the first threshold, it is determined that the differential protection setting parameters of the motor are normal. Exemplarily, the first threshold may be 1.5.

[0076] Figure 5 FIG. 1 is a flow chart of a method for setting and checking a high-voltage motor according to an exemplary embodiment. Figure 5 As shown, the protection setting parameters of the motor include the current quick-break protection sensitivity, and obtaining the protection setting parameters of the motor according to the basic operating parameters of the motor may include the following steps:

[0077] In step S205, the quick-break protection current constant of the motor is obtained according to the secondary rated current of the motor.

[0078] In this step, the motor's quick-break protection current constant Isd is obtained according to the motor's secondary rated current Ie. Exemplarily, the motor's quick-break protection current constant Isd can be obtained by the following formula:

[0079] Isd=Krel×Kst×Ie Formula 5

[0080] Among them, Krel is the reliability coefficient of the motor, which is generally 1.5 and can be obtained from the motor manual. Kst is the starting current multiple of the motor, which is generally between 7 and 8 and can be obtained from the motor manual.

[0081] In step S206, the current quick-break protection sensitivity of the motor is obtained according to the ratio of the minimum short-circuit current to the quick-break protection current constant.

[0082] In this step, the current quick-break protection sensitivity Ksd of the motor is obtained according to the ratio of the minimum short-circuit current Imin to the quick-break protection current setting Isd. That is, Ksd = Imin / Isd Formula 6

[0083] Figure 6 FIG. 1 is a flow chart of a method for setting and checking a high-voltage motor according to an exemplary embodiment. Figure 6 As shown, the method may further include the following steps:

[0084] In step S50, when the current quick-break protection sensitivity of the motor is greater than a second threshold, it is determined that the quick-break protection current setting parameters of the motor are normal.

[0085] In this step, when the current quick-break protection sensitivity Ksd of the motor is greater than the second threshold, it is determined that the quick-break protection current setting parameters of the motor are normal. For example, the second threshold may be 2.

[0086] Figure 7 FIG. 1 is a flow chart of a method for setting and checking a high-voltage motor according to an exemplary embodiment. Figure 7 As shown, the protection setting parameters of the motor include the thermal overload protection action time, and obtaining the protection setting parameters of the motor according to the basic operating parameters of the motor may also include the following steps:

[0087] In step S207, the overload time constant of the motor is obtained according to the basic operating parameters of the motor.

[0088] In this step, the overload time constant τ of the motor is obtained according to the basic operating parameters of the motor. For example, the overload time constant τ of the motor can be obtained according to the overload allowable time t of the motor, the overload current I f And the rated current Ia of the motor, obtain the overload time constant τ of the motor.

[0089] In step S208, the heating equivalent current of the motor is obtained according to the basic operating parameters of the motor.

[0090] In this step, the heat equivalent current Ieq of the motor is obtained according to the basic operating parameters of the motor. 1 , the positive sequence current heating coefficient K of the motor 1 , the negative sequence current I of the motor 2 And the negative sequence current heating coefficient K of the motor 2 , obtain the heating equivalent current Ieq of the motor.

[0091] In step S209, the thermal overload protection action time is obtained according to the overload time constant, the heating equivalent current and the rated current.

[0092] In this step, the thermal overload protection action time t1 of the motor can be obtained according to the overload time constant τ, the heating equivalent current Ieq and the rated current Ia of the motor. Exemplarily, the thermal overload protection action time t1 of the motor can be obtained by the following formula:

[0093]

[0094] Wherein, k is a setting constant ranging from 1.0 to 1.3, and can be set to 1.05.

[0095] Figure 8 FIG. 1 is a flow chart of a method for setting and checking a high-voltage motor according to an exemplary embodiment. Figure 8 As shown, the basic operating parameters also include: the allowed time length of the motor overload and the overload current of the motor. The step of obtaining the overload time constant of the motor may include the following steps:

[0096] In step S2071, the overload time constant of the motor is obtained according to the overload allowable time, the overload current and the rated current.

[0097] In this step, according to the motor overload allowable time t, overload current I f and rated current Ia, to obtain the overload time constant τ of the motor. Exemplarily, the overload time constant τ of the motor can be obtained by the following formula:

[0098]

[0099] Wherein, k is a setting constant ranging from 1.0 to 1.3, and can be set to 1.05.

[0100] Fig. 9 FIG. 1 is a flow chart of a method for setting and checking a high-voltage motor according to an exemplary embodiment. Fig. 9 As shown, the basic operating parameters also include: the positive sequence current and the positive sequence current heating coefficient of the motor, and the negative sequence current and the negative sequence current heating coefficient of the motor. The step of obtaining the heating equivalent current of the motor may include the following steps:

[0101] In step S2081, the heating equivalent current of the motor is obtained according to the positive-sequence current, the positive-sequence current heating coefficient, the negative-sequence current and the negative-sequence current heating coefficient.

[0102] In this step, the positive sequence current I 1 , the positive sequence current heating coefficient K of the motor 1 , the negative sequence current I of the motor 2 And the negative sequence current heating coefficient K of the motor 2 , obtain the heating equivalent current Ieq of the motor. Exemplarily, the heating equivalent current Ieq of the motor can be obtained by the following formula:

[0103]

[0104] In summary, the disclosed embodiment provides a high-voltage motor setting and verification method, the method comprising: obtaining basic operating parameters of the motor; obtaining protection setting parameters of the motor according to the basic operating parameters of the motor; and verifying the protection setting parameters of the motor through an electronic spreadsheet. The disclosed embodiment can realize automatic calculation and verification of motor protection setting parameters, reduce the workload of manual calculation and the probability of error, and avoid the use of professional setting calculation software, thereby reducing production costs and saving production costs.

[0105] Fig.10 FIG. 1 is a block diagram of an electronic device according to an exemplary embodiment. Fig.10 As shown, the electronic device 1000 may include: a processor 1001 and a memory 1002. The electronic device 1000 may also include one or more of a multimedia component 1003, an input / output (I / O) interface 1004, and a communication component 1005.

[0106] The processor 1001 is used to control the overall operation of the electronic device 1000 to complete all or part of the steps in the above-mentioned high-voltage motor setting and verification method. The memory 1002 is used to store various types of data to support the operation of the electronic device 1000. These data may include, for example, instructions for any application or method used to operate on the electronic device 1000, and application-related data, such as contact data, sent and received messages, pictures, audio, video, etc. The memory 1002 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, referred to as EPROM), programmable read-only memory (Programmable Read-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, disk or optical disk. The multimedia component 1003 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone, which is used to receive external audio signals. The received audio signal may be further stored in the memory 1002 or sent through the communication component 1005. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 1004 provides an interface between the processor 1001 and other interface modules, and the above-mentioned other interface modules may be keyboards, mice, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 1005 is used for wired or wireless communication between the electronic device 1000 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, is not limited here. Therefore, the corresponding communication component 1005 may include: Wi-Fi module, Bluetooth module, NFC module, etc.

[0107] In an exemplary embodiment, the electronic device 1000 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned high-voltage motor setting and calibration method.

[0108] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the high-voltage motor setting and verification method described above are implemented. For example, the computer-readable storage medium may be the memory 1002 including the program instructions, and the program instructions may be executed by the processor 1001 of the electronic device 1000 to complete the high-voltage motor setting and verification method described above.

[0109] In another exemplary embodiment, a computer program product is also provided. The computer program product includes a computer program that can be executed by a programmable device. The computer program has a code portion for executing the above-mentioned high-voltage motor tuning and calibration method when executed by the programmable device.

[0110] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0111] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0112] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A high voltage motor setting and verification method, characterized in that: The method comprises: Obtaining basic operating parameters of the motor; Obtaining protection setting parameters of the motor according to the basic operating parameters of the motor; The protection setting parameters of the motor are checked by electronic spreadsheet.

2. The method according to claim 1, characterized in that The basic operating parameters include: the rated current of the motor, the CT ratio of the motor and the primary short-circuit current of the motor, the protection setting parameters of the motor include the secondary rated current and the minimum short-circuit current, and the protection setting parameters of the motor are obtained according to the basic operating parameters of the motor, including: Obtaining the secondary rated current according to the ratio of the rated current of the motor to the CT transformation ratio of the motor; The minimum short-circuit current is obtained according to the ratio of the primary short-circuit current of the motor to the CT transformation ratio of the motor.

3. The method according to claim 2, characterized in that The protection setting parameters of the motor include differential protection sensitivity, and obtaining the protection setting parameters of the motor according to the basic operating parameters of the motor includes: Obtaining a minimum differential protection current of the motor according to the secondary rated current of the motor; The differential protection sensitivity of the motor is obtained according to the ratio of the minimum short-circuit current to the minimum differential protection current.

4. The method according to claim 3, characterized in that The method further comprises: When the differential protection sensitivity of the motor is greater than a first threshold, it is determined that the differential protection setting parameters of the motor are normal.

5. The method according to claim 2, characterized in that: The protection setting parameters of the motor include current quick-break protection sensitivity, and obtaining the protection setting parameters of the motor according to the basic operating parameters of the motor includes: According to the secondary rated current of the motor, obtaining the instantaneous protection current setting value of the motor; The current quick-break protection sensitivity of the motor is obtained according to the ratio of the minimum short-circuit current to the quick-break protection current constant.

6. The method according to claim 5, characterized in that The method further comprises: When the current quick-break protection sensitivity of the motor is greater than a second threshold, it is determined that the quick-break protection current setting parameters of the motor are normal.

7. The method according to claim 2, characterized in that The protection setting parameters of the motor include a thermal overload protection action time, and the obtaining of the protection setting parameters of the motor according to the basic operating parameters of the motor also includes: Obtaining an overload time constant of the motor according to basic operating parameters of the motor; According to the basic operating parameters of the motor, obtaining the heating equivalent current of the motor; The thermal overload protection action time is obtained according to the overload time constant, the heating equivalent current and the rated current.

8. The method according to claim 7, characterized in that The basic operating parameters also include: the allowed time duration of the motor when overloaded and the overload current of the motor. The step of obtaining the overload time constant of the motor includes: The overload time constant of the motor is obtained according to the overload allowable time, the overload current and the rated current.

9. The method according to claim 7, characterized in that: The basic operating parameters also include: the positive sequence current and the positive sequence current heating coefficient of the motor, and the negative sequence current and the negative sequence current heating coefficient of the motor. The step of obtaining the heating equivalent current of the motor includes: The heating equivalent current of the motor is obtained according to the positive-sequence current, the positive-sequence current heating coefficient, the negative-sequence current and the negative-sequence current heating coefficient.

10. An electronic device, characterized in that: include: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the steps of the method according to any one of claims 1 to 9.

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