CN116298496A - Power detection system and method for multifunctional isolating switch driving motor - Google Patents
Power detection system and method for multifunctional isolating switch driving motor Download PDFInfo
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- CN116298496A CN116298496A CN202310159479.2A CN202310159479A CN116298496A CN 116298496 A CN116298496 A CN 116298496A CN 202310159479 A CN202310159479 A CN 202310159479A CN 116298496 A CN116298496 A CN 116298496A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
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- G—PHYSICS
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- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/24—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/133—Arrangements for measuring electric power or power factor by using digital technique
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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Abstract
The application relates to a power detection system and method for a multifunctional isolating switch driving motor, and belongs to the technical field of power detection of isolating switch driving motors. The application comprises the following steps: after the power data of the isolating switch driving motor are obtained, the motor type is judged according to the power data through the motor type judging module, and then the power calculation is carried out through the motor power calculating module according to the preset power calculation formula corresponding to the motor type, in the scheme, the power calculation formula corresponding to the isolating switch is set for the three motor types commonly used by the isolating switch, and the mechanical performance of the isolating switch suitable for the three driving motors is detected.
Description
Technical Field
The application belongs to the technical field of power detection of a disconnecting switch driving motor, and particularly relates to a power detection system and method of a multifunctional disconnecting switch driving motor.
Background
The isolating switch is important main equipment of the electric power system, has large holding capacity, frequently causes problems of refusal of the isolating switch, insufficient opening and closing, mechanism blocking and the like in recent years, threatens the safe and stable operation of a power grid, mainly causes mechanical faults of a transmission mechanism, detects the mechanical properties of the transmission mechanism of the isolating switch by a certain means, clearly detects whether the properties of the transmission mechanism of the isolating switch are abnormal, can timely find out the faults of the mechanism and timely overhauls the mechanism, can avoid the problems of refusal of the isolating switch, insufficient opening and closing, mechanism blocking and the like, and various researches are carried out by various production and scientific research institutions aiming at the mechanical fault detection of the transmission mechanism of the isolating switch at present, and judges the mechanical properties of the isolating switch to be a main technical route at present through the power detection of a driving motor of the isolating switch;
in the prior art, the power detection device is customized for the three-phase asynchronous motor, the core module in the motor power detection device is a motor operation parameter acquisition module and a motor power calculation module, the motor operation parameter acquisition module is configured according to the operation parameter acquisition requirements of three-phase motor voltage, current and the like, and the calculation program in the motor power calculation module is also programmed and developed according to the formula of the three-phase asynchronous motor power, so that the mechanical performance evaluation of the isolating switch transmission mechanism driven by the single three-phase asynchronous motor is only carried out by the presently disclosed technology, but the type of the isolating switch driving motor is not only three-phase asynchronous motor, but also single-phase alternating current motor and direct current motor, and the single-phase alternating current motor and the direct current motor have larger ratio, so that the presently disclosed isolating switch transmission mechanism mechanical performance evaluation system based on the power detection of the isolating switch driving motor has a small application range and is only applicable to the isolating switch driven by the three-phase asynchronous motor, and the mechanical performance evaluation of the isolating switch transmission mechanism driven by the direct current motor cannot be completed.
Disclosure of Invention
Therefore, the application provides a power detection system and method for a multifunctional isolating switch driving motor, which are used for solving the problems that in the prior art, a motor operation parameter acquisition module is required to be configured according to operation parameters such as three-phase motor voltage and current, and a calculation program in a motor power calculation module is also programmed and developed according to a formula of three-phase asynchronous motor power, so that the system and method are only suitable for isolating switches driven by three-phase asynchronous motors and cannot finish power detection of single-phase alternating current motors and direct current motors.
In order to achieve the above purpose, the present application adopts the following technical scheme:
according to a first aspect of an embodiment of the present invention, there is provided a power detection system for a driving motor of a multifunctional isolating switch, including:
and a data acquisition module: the power supply data acquisition module is used for acquiring power supply data of the isolating switch driving motor;
the motor type judging module is used for: the type of the isolating switch driving motor is judged according to the power supply data of the isolating switch driving motor;
the motor power calculation module: and the power control module is used for calling a calculation formula corresponding to the type of the driving motor to calculate the power of the motor according to the type of the driving motor of the isolating switch and the power data.
Preferably, the method comprises the steps of,
the data acquisition module comprises: a single-phase, alternating current (DC) dual-purpose voltage divider and a current sensor;
the single-phase alternating current-direct current dual-purpose voltage divider is connected with the motor type judging module and is used for collecting voltage signals of a power supply loop of the driving motor, the single-phase alternating current-direct current dual-purpose voltage divider comprises two wiring ends, the two wiring ends of the single-phase alternating current-direct current dual-purpose voltage divider are respectively lapped on any two phases of a power supply loop of the three-phase asynchronous motor and are used for detecting the voltage signals of the power supply loop of the three-phase asynchronous motor, or the two wiring ends of the single-phase alternating current-direct current dual-purpose voltage divider are respectively lapped between a phase line and a central line of the single-phase alternating current motor or the direct current motor and are used for detecting the voltage signals of the power supply loop of the single-phase alternating current motor or the direct current motor;
the current sensor is connected with the motor type judging module and is used for collecting current signals of power supply wires of the driving motor, the current sensor is a single-phase pincerlike alternating current-direct current sensor, and a jaw of the single-phase pincerlike alternating current-direct current sensor is opened and connected to any one power supply wire of the driving motor.
Preferably, the method further comprises:
an overvoltage protector and an overcurrent protector;
the overvoltage protector is arranged between the single-phase alternating current-direct current dual-purpose voltage divider and a driving motor power supply loop and is used for disconnecting a circuit when the voltage entering the single-phase alternating current-direct current dual-purpose voltage divider exceeds a preset voltage threshold value;
the overcurrent protector is arranged between the current sensor and the power supply wire of the driving motor and is used for breaking a circuit when the current entering the current sensor exceeds a preset current threshold value.
Preferably, the method comprises the steps of,
the motor type judging module is used for judging whether the alternating current or direct current is obtained according to the voltage waveform after the voltage signal is obtained, judging that the isolating switch driving motor is a direct current motor if the alternating current is the direct current, judging whether the voltage value is larger than a preset second voltage threshold value or smaller than a preset third voltage threshold value if the voltage value is the alternating current, judging that the isolating switch driving motor is a three-phase asynchronous motor if the voltage value is larger than the preset second voltage threshold value, and judging that the isolating switch driving motor is a single-phase alternating current motor if the voltage value is smaller than the preset third voltage threshold value.
Preferably, the method comprises the steps of,
the output end of the motor type judging module comprises three output channels, namely a direct current motor output channel, a single-phase alternating current motor output channel and a three-phase asynchronous motor output channel;
the direct current motor output channel, the single-phase alternating current motor output channel and the three-phase asynchronous motor output channel are respectively connected with the input end of the motor power calculation module;
after the motor type judging module judges the type of the isolating switch driving motor, a corresponding output channel is opened, and voltage data, current data and a motor type judging result are sent to the motor power calculating module from the opened output channel.
Preferably, the method comprises the steps of,
the motor power calculation module is used for calling a corresponding formula according to the motor type judgment result after receiving the motor type judgment result, the current data and the voltage data sent by the motor type judgment module, and calculating the power of the isolating switch driving motor through the current data and the voltage data.
Preferably, the method further comprises:
a communication module;
the communication module is used for connecting the motor power calculation module and the intelligent analysis terminal, and is used for transmitting the power of the isolating switch driving motor calculated by the motor power calculation module to the intelligent analysis terminal;
the communication module adopts a Bluetooth or mobile network communication mode to carry out data transmission.
Preferably, the method comprises the steps of,
the intelligent analysis terminal is used for drawing the power of the isolating switch driving motor for a period of time into a motor power curve after receiving the power of the isolating switch driving motor sent by the communication module, comparing the motor power curve with a preset standard motor power curve, and judging whether the motor power curve is qualified or not.
Preferably, the method further comprises:
a storage module and a power supply module;
the storage module is connected with the motor power calculation module and is used for storing the power data of the isolating switch driving motor calculated by the motor power calculation module;
the power module is used for supplying power for the power detection system of the multifunctional isolating switch driving motor.
According to a second aspect of an embodiment of the present invention, there is provided a power detection method for a multifunctional isolating switch driving motor, the method being based on the power detection system for a multifunctional isolating switch driving motor described in any one of the above, the method including:
acquiring a voltage signal and a current signal of a power supply of an isolating switch driving motor;
judging whether the voltage signal is alternating current or direct current according to the waveform of the voltage signal, if the voltage signal is direct current, judging that the isolating switch driving motor is a direct current motor, if the voltage signal is alternating current, further judging the voltage value, if the voltage value is larger than a preset second voltage threshold value, judging that the isolating switch driving motor is a three-phase asynchronous motor, and if the voltage value is smaller than a preset third voltage threshold value, judging that the isolating switch driving motor is a single-phase alternating current motor;
according to the type judgment result of the isolating switch driving motor, a preset power calculation formula is called, and the power of the motor is calculated according to the voltage value and the current value;
and drawing a motor power curve according to the motor power of the isolating switch driving motor for a period of time, comparing the motor power curve with a preset motor power standard curve, and judging whether the motor power curve is qualified or not.
The application adopts the technical scheme, possesses following beneficial effect at least:
according to the power calculation method, after the power data of the isolating switch driving motor are acquired, the motor type is judged according to the power data through the motor type judging module, then the power calculation is carried out through the motor power calculating module according to the preset power calculation formula corresponding to the motor type, in the scheme, the power calculation formula corresponding to the isolating switch is set for three types of motor types commonly used, the mechanical performance of the isolating switch of the three types of driving motors is detected, and compared with the prior art, the power calculation method is capable of only detecting the three-phase asynchronous motor, and the application range of the scheme is wider.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a system diagram of a multi-function isolator drive motor power detection system, according to an exemplary embodiment;
FIG. 2 is a detailed system diagram of a multi-function isolator drive motor power detection system, according to an exemplary embodiment;
FIG. 3 is a detailed system diagram of a motor power calculation module of a multi-function isolator drive motor power detection system, according to an exemplary embodiment;
FIG. 4 is a flow chart of a method for power detection of a multi-function isolator drive motor according to an exemplary embodiment;
in the accompanying drawings: the system comprises a 1-data acquisition module, a 2-motor type judgment module, a 3-motor power calculation module, a 4-overvoltage protector, a 5-overcurrent protector, a 6-communication module, a 7-intelligent analysis terminal, an 8-storage module, a 9-power module, a 101-single-phase alternating current/direct current dual-purpose voltage divider and a 102-current sensor.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, based on the examples herein, which are within the scope of the protection sought by those of ordinary skill in the art without undue effort, are intended to be encompassed by the present application.
Embodiment one:
referring to fig. 1, fig. 1 is a system diagram of a multifunctional power detection system for an isolating switch driving motor according to an exemplary embodiment, where the power detection system for an isolating switch driving motor is applied to the technical field of power detection of an isolating switch driving motor, and the power detection system for an isolating switch driving motor includes:
data acquisition module 1: the power supply data acquisition module is used for acquiring power supply data of the isolating switch driving motor;
motor type judging module 2: the type of the isolating switch driving motor is judged according to the power supply data of the isolating switch driving motor;
motor power calculation module 3: the power control method comprises the steps of calling a calculation formula corresponding to the type of the driving motor to calculate the power of the motor according to the type of the driving motor of the isolating switch and the power data;
it can be understood that, this application is through obtaining isolator driving motor's power data back, firstly judge the motor type according to power data through motor type judgement module 2, later call the power calculation formula that corresponds the motor type of predetermineeing through motor power calculation module 3 according to the motor type and carry out power calculation, in this scheme, set up the power calculation formula that corresponds under each type to isolator commonly used three motor types, be applicable to three driving motor's isolator's mechanical properties and detect, in comparison with prior art, can only detect this type of motor to three-phase asynchronous motor, the application range of the scheme of this application is wider.
Preferably, the method comprises the steps of,
the data acquisition module 1 includes: a single-phase dc voltage divider 101 and a current sensor 102;
the single-phase alternating current/direct current dual-purpose voltage divider 101 is connected with the motor type judging module 2 and is used for collecting voltage signals of a power supply loop of the driving motor, the single-phase alternating current/direct current dual-purpose voltage divider 101 comprises two wiring ends, the two wiring ends of the single-phase alternating current/direct current dual-purpose voltage divider 101 are respectively lapped on any two phases of the power supply loop of the three-phase asynchronous motor and are used for detecting the voltage signals of the power supply loop of the three-phase asynchronous motor, or the two wiring ends of the single-phase alternating current/direct current dual-purpose voltage divider 101 are respectively lapped between a phase line and a central line of the single-phase alternating current motor or the direct current motor and are used for detecting the voltage signals of the power supply loop of the single-phase alternating current motor or the direct current motor;
the current sensor 102 is connected with the motor type judging module 2 and is used for collecting current signals of power supply wires of the driving motor, the current sensor 102 is a single-phase pincerlike alternating current/direct current sensor, and a jaw of the single-phase pincerlike alternating current/direct current sensor is opened and connected to any one power supply wire of the driving motor;
it can be understood that the single-phase ac/dc voltage divider 101 has two terminals at a time, and when in use, the two terminals of the single-phase ac/dc voltage divider 101 can be respectively lapped on any two phases of the three-phase asynchronous motor loop for detecting the line-to-line voltage of the three-phase asynchronous motor; or overlap joint is used for detecting phase voltage between the phase line and the central line of single-phase alternating current motor, direct current motor, and current sensor 102 is single-phase pincerlike alternating current-direct current sensor, is applicable to alternating current-direct current detection, adopts hall induction technique, and portable pincerlike design, need not break the circuit of being surveyed, and non-contact measurement is safe, quick, and the binding clip iron core adopts high magnetic alloy, has guaranteed that incessantly measuring high accuracy, high stability, high reliability throughout the year, only need open the jaw of current sensor 102 when using, the parcel is three-phase asynchronous motor, single-phase alternating current motor, direct current motor arbitrary power supply wire can.
Preferably, the method further comprises:
an overvoltage protector 4 and an overcurrent protector 5;
the overvoltage protector 4 is arranged between the single-phase alternating current-direct current dual-purpose voltage divider 101 and a driving motor power supply loop, and is used for disconnecting a circuit when the voltage entering the single-phase alternating current-direct current dual-purpose voltage divider 101 exceeds a preset voltage threshold value;
the overcurrent protector 5 is arranged between the current sensor 102 and a power supply wire of the driving motor, and is used for disconnecting a circuit when the current entering the current sensor 102 exceeds a preset current threshold value;
it will be appreciated that in order to protect the system from excessive voltages or currents, the overvoltage protector 4 is used to limit the maximum voltage to the system and prevent damage to the system beyond what the system can withstand, and the current protector 5 is used to protect the system from currents which cannot withstand when the motor circuit fails, etc.
Preferably, the method comprises the steps of,
the motor type judging module 2 is configured to judge whether the voltage signal is ac or dc according to the voltage waveform, if the voltage signal is dc, then judge that the isolating switch driving motor is a dc motor, if the voltage value is greater than a preset second voltage threshold or less than a preset third voltage threshold, if the voltage value is greater than the preset second voltage threshold, then judge that the isolating switch driving motor is a three-phase asynchronous motor, and if the voltage value is less than the preset third voltage threshold, then judge that the isolating switch driving motor is a single-phase ac motor;
it can be understood that, as shown in fig. 3, the motor type judging module 2 is a Programmable Logic Controller (PLC), mainly distinguishes between ac and dc of voltage, and judges voltage amplitude, so as to realize power calculation of three-phase asynchronous motor, single-phase ac motor and dc motor by three-phase ac, single-phase ac and dc channels, the motor type judging module 2 includes ac relay, dc relay and zener diode, the voltage signal obtained by the single-phase ac/dc voltage divider 101 is firstly sent to the ac relay and dc relay through branch circuits, when the signal is ac, the ac relay is turned on, the dc relay is turned off, the voltage is continuously transmitted after passing through the ac relay, and is respectively sent to the high-pass filter and the low-pass filter, wherein the turn-on threshold of the high-pass filter is set to be greater than 350V, the voltage of the three-phase loop is set to be 380V, the high-pass filter is turned on, the voltage signal is sent to the three-phase asynchronous motor power module of the motor power calculating module 3, the threshold of the low-pass filter is set to be not greater than 250V, and the voltage signal of the single-phase ac motor is sent to the single-phase ac motor power calculating module 220V; for the case of a direct current motor, the voltage is direct current, the alternating current relay is disconnected, the direct current relay is conducted, and the voltage is directly sent to the direct current motor power module of the motor power calculation module 3.
Preferably, the method comprises the steps of,
the output end of the motor type judging module 2 comprises three output channels, namely a direct current motor output channel, a single-phase alternating current motor output channel and a three-phase asynchronous motor output channel;
the direct current motor output channel, the single-phase alternating current motor output channel and the three-phase asynchronous motor output channel are respectively connected with the input end of the motor power calculation module 3;
after the motor type judging module 2 judges the type of the isolating switch driving motor, opening a corresponding output channel, and sending voltage data, current data and a motor type judging result from the opened output channel to the motor power calculating module 3;
it can be understood that the motor type judging module 2 judges the type of the motor according to the received voltage signal, after judging the motor type, the voltage data, the current data and the motor type judging result are sent to the motor power calculating module 3 through the output channel corresponding to the motor type, and the motor power calculating module 3 can take a corresponding calculation formula according to the data received from which channel on one hand, and can also call a corresponding power calculation formula according to the motor type judging result, which is not limited in this embodiment.
Preferably, the method comprises the steps of,
the motor power calculation module 3 is used for calling a corresponding formula according to the motor type judgment result after receiving the motor type judgment result, the current data and the voltage data sent by the motor type judgment module 2, and calculating the power of the isolating switch driving motor through the current data and the voltage data;
it can be understood that when the motor type is determined as a three-phase asynchronous motor, the motor power calculation module 3 invokes a preset three-phase asynchronous motor power calculation formula, and calculates the power of the three-phase asynchronous motor by combining the voltage data and the current data sent by the motor type determination module 2, where the three-phase asynchronous motor power calculation formula=
Wherein I represents the phase current of the power supply loop, U represents the phase voltage of the power supply loop, +.>
The power factor of the motor is represented, the power factor of the motor is related to the material of the motor, the power factor of the motor can be obtained through experimental data, the specific experimental calculation process is quite mature in the prior art, and the application does not need excessive repetitionIn the same way, the->
Dc motor power calculation formula = I x U.
Preferably, the method further comprises:
a communication module 6;
the communication module 6 is used for connecting the motor power calculation module 3 and the intelligent analysis terminal 7, and the communication module 6 is used for sending the power of the isolating switch driving motor calculated by the motor power calculation module 3 to the intelligent analysis terminal 7;
the communication module 6 adopts a Bluetooth or mobile network communication mode to carry out data transmission;
it can be understood that after the power of the isolating switch driving motor is calculated by the motor power calculation module 3, the motor power is sent to the intelligent analysis terminal 7 through the communication module 6, so that the intelligent analysis terminal 7 can conveniently judge whether the mechanical performance of the motor is normal or not.
Preferably, the method comprises the steps of,
the intelligent analysis terminal 7 is used for drawing the power of the isolating switch driving motor for a period of time into a motor power curve after receiving the power of the isolating switch driving motor sent by the communication module 6, comparing the motor power curve with a preset standard motor power curve, and judging whether the motor power curve is qualified or not;
it can be understood that the sampling rate of the single-phase ac/dc voltage divider 101 and the current sensor 102 of the system is 50 times/second, that is, the motor power calculation module 3 can calculate 50 motor powers per second, meanwhile, 50 times of motor power data are sent to the intelligent analysis terminal 7 through the communication module 6 per second, the intelligent analysis terminal 7 receives the power data and draws a time power curve, the drawn time power curve is compared with a preset standard motor power curve, the preset standard motor power curve is obtained by mainly detecting 10 brand new isolating switches, weighting and averaging the collected data to obtain standard sampling data, drawing a standard curve is performed on the standard sampling data, and whether the average difference is within a preset error threshold value is judged by calculating the average difference between the drawn time power curve and the preset standard motor power curve, if not, the motor power curve is not qualified, that is, the mechanical performance of the isolating switch is not qualified is indicated.
Preferably, the method further comprises:
a memory module 8 and a power module 9;
the storage module 8 is connected with the motor power calculation module 3 and is used for storing the power data of the isolating switch driving motor calculated by the motor power calculation module 3;
the power module 9 is used for supplying power to the power detection system of the multifunctional isolating switch driving motor;
it will be appreciated that, in order to prevent data loss and backup data, the motor power calculation module 3 calculates the power of the motor, and then, the power data is stored in the storage module 8 in addition to being sent to the intelligent analysis terminal 7, and the power module 9 supplies power to the modules or components of the whole system.
Embodiment two:
the embodiment also provides a power detection method of the multifunctional isolating switch driving motor, which is based on the power detection system of the multifunctional isolating switch driving motor, and comprises the following steps:
s1, acquiring a voltage signal and a current signal of a power supply of an isolating switch driving motor;
s2, judging whether the voltage signal is alternating current or direct current according to the waveform of the voltage signal, if the voltage signal is direct current, judging that the isolating switch driving motor is a direct current motor, if the voltage signal is alternating current, further judging the voltage value, if the voltage value is larger than a preset second voltage threshold value, judging that the isolating switch driving motor is a three-phase asynchronous motor, and if the voltage value is smaller than the preset second voltage threshold value, judging that the isolating switch driving motor is a three-phase asynchronous motor or a single-phase alternating current motor;
s3, according to the type judgment result of the isolating switch driving motor, a preset power calculation formula is called, and the power of the motor is calculated according to the voltage value and the current value;
s4, drawing a motor power curve according to motor power of the isolating switch driving motor for a period of time, comparing the motor power curve with a preset motor power standard curve, and judging whether the motor power curve is qualified or not;
it will be understood that, as shown in fig. 4, in this embodiment, the voltage U and the current I of the isolating switch driving motor are obtained first, and whether the isolating switch driving motor is direct current or alternating current is determined according to the waveform of the voltage U, if the isolating switch driving motor is direct current, if the isolating switch driving motor is alternating current, the voltage value is further determined, if the voltage value is greater than a preset second voltage threshold, the isolating switch driving motor is determined to be a three-phase asynchronous motor, if the voltage value is less than the preset second voltage threshold, the isolating switch driving motor is determined to be a three-phase asynchronous motor, according to the type judgment result of the isolating switch driving motor, if the isolating switch driving motor is a three-phase asynchronous motor, the formula root number 3 x I x U x power factor is called to calculate the motor power, if the isolating switch driving motor is a single-phase alternating current motor, the formula I x U x power factor is called to calculate the motor power, if the isolating switch driving motor is a direct current motor, the formula I x U x power factor is called to calculate the motor power, the motor power in a period of time is drawn into a time power curve, the time power curve is compared with a preset standard motor power curve, and whether the mechanical performance of the isolating switch is normal is judged; according to the method, after the power data of the isolating switch driving motor are acquired, the motor type is judged according to the power data, then the preset power calculation formula corresponding to the motor type is called according to the motor type to perform power calculation, in the scheme, the power calculation formulas corresponding to the isolating switch are set for the three motor types commonly used by the isolating switch, the mechanical performance of the isolating switch is detected, and compared with the prior art, the method is capable of detecting the motor of the three-phase asynchronous motor, and the application range of the scheme is wider.
It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to.
It should be noted that in the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "plurality", "multiple" means at least two.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present, and further, as used herein, connection may comprise a wireless connection; the use of the term "and/or" includes any and all combinations of one or more of the associated listed items.
Any process or method description in a flowchart or otherwise described herein may be understood as: means, segments, or portions of code representing executable instructions including one or more steps for implementing specific logical functions or processes are included in the preferred embodiments of the present application, in which functions may be executed out of order from that shown or discussed, including in a substantially simultaneous manner or in an inverse order, depending upon the functionality involved, as would be understood by those skilled in the art to which the embodiments of the present application pertains.
It is to be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (10)
1. A power detection system for a multi-functional isolating switch drive motor, the system comprising:
and a data acquisition module: the power supply data acquisition module is used for acquiring power supply data of the isolating switch driving motor;
the motor type judging module is used for: the type of the isolating switch driving motor is judged according to the power supply data of the isolating switch driving motor;
the motor power calculation module: and the power control module is used for calling a calculation formula corresponding to the type of the driving motor to calculate the power of the motor according to the type of the driving motor of the isolating switch and the power data.
2. The system of claim 1, wherein the system further comprises a controller configured to control the controller,
the data acquisition module comprises: a single-phase, alternating current (DC) dual-purpose voltage divider and a current sensor;
the single-phase alternating current-direct current dual-purpose voltage divider is connected with the motor type judging module and is used for collecting voltage signals of a power supply loop of the driving motor, the single-phase alternating current-direct current dual-purpose voltage divider comprises two wiring ends, the two wiring ends of the single-phase alternating current-direct current dual-purpose voltage divider are respectively lapped on any two phases of a power supply loop of the three-phase asynchronous motor and are used for detecting the voltage signals of the power supply loop of the three-phase asynchronous motor, or the two wiring ends of the single-phase alternating current-direct current dual-purpose voltage divider are respectively lapped between a phase line and a central line of the single-phase alternating current motor or the direct current motor and are used for detecting the voltage signals of the power supply loop of the single-phase alternating current motor or the direct current motor;
the current sensor is connected with the motor type judging module and is used for collecting current signals of power supply wires of the driving motor, the current sensor is a single-phase pincerlike alternating current-direct current sensor, and a jaw of the single-phase pincerlike alternating current-direct current sensor is opened and connected to any one power supply wire of the driving motor.
3. The system of claim 2, further comprising:
an overvoltage protector and an overcurrent protector;
the overvoltage protector is arranged between the single-phase alternating current-direct current dual-purpose voltage divider and a driving motor power supply loop and is used for disconnecting a circuit when the voltage entering the single-phase alternating current-direct current dual-purpose voltage divider exceeds a preset voltage threshold value;
the overcurrent protector is arranged between the current sensor and the power supply wire of the driving motor and is used for breaking a circuit when the current entering the current sensor exceeds a preset current threshold value.
4. The system of claim 2, wherein the system further comprises a controller configured to control the controller,
the motor type judging module is used for judging whether the alternating current or direct current is obtained according to the voltage waveform after the voltage signal is obtained, judging that the isolating switch driving motor is a direct current motor if the alternating current is the direct current, judging whether the voltage value is larger than a preset second voltage threshold value or smaller than a preset third voltage threshold value if the voltage value is the alternating current, judging that the isolating switch driving motor is a three-phase asynchronous motor if the voltage value is larger than the preset second voltage threshold value, and judging that the isolating switch driving motor is a single-phase alternating current motor if the voltage value is smaller than the preset third voltage threshold value.
5. The system of claim 4, wherein the system further comprises a controller configured to control the controller,
the output end of the motor type judging module comprises three output channels, namely a direct current motor output channel, a single-phase alternating current motor output channel and a three-phase asynchronous motor output channel;
the direct current motor output channel, the single-phase alternating current motor output channel and the three-phase asynchronous motor output channel are respectively connected with the input end of the motor power calculation module;
after the motor type judging module judges the type of the isolating switch driving motor, a corresponding output channel is opened, and voltage data, current data and a motor type judging result are sent to the motor power calculating module from the opened output channel.
6. The system of claim 5, wherein the system further comprises a controller configured to control the controller,
the motor power calculation module is used for calling a corresponding formula according to the motor type judgment result after receiving the motor type judgment result, the current data and the voltage data sent by the motor type judgment module, and calculating the power of the isolating switch driving motor through the current data and the voltage data.
7. The system of claim 1 or 6, further comprising:
a communication module;
the communication module is used for connecting the motor power calculation module and the intelligent analysis terminal, and is used for transmitting the power of the isolating switch driving motor calculated by the motor power calculation module to the intelligent analysis terminal;
the communication module adopts a Bluetooth or mobile network communication mode to carry out data transmission.
8. The system of claim 7, wherein the system further comprises a controller configured to control the controller,
the intelligent analysis terminal is used for drawing the power of the isolating switch driving motor for a period of time into a motor power curve after receiving the power of the isolating switch driving motor sent by the communication module, comparing the motor power curve with a preset standard motor power curve, and judging whether the motor power curve is qualified or not.
9. The system of any one of claims 1-8, further comprising:
a storage module and a power supply module;
the storage module is connected with the motor power calculation module and is used for storing the power data of the isolating switch driving motor calculated by the motor power calculation module;
the power module is used for supplying power for the power detection system of the multifunctional isolating switch driving motor.
10. A method for detecting power of a multifunctional isolating switch driving motor, characterized in that the method is based on a multifunctional isolating switch driving motor power detection system according to any one of claims 1-9, the method comprising:
acquiring a voltage signal and a current signal of a power supply of an isolating switch driving motor;
judging whether the voltage signal is alternating current or direct current according to the waveform of the voltage signal, if the voltage signal is direct current, judging that the isolating switch driving motor is a direct current motor, if the voltage signal is alternating current, further judging the voltage value, if the voltage value is larger than a preset second voltage threshold value, judging that the isolating switch driving motor is a three-phase asynchronous motor, and if the voltage value is smaller than a preset third voltage threshold value, judging that the isolating switch driving motor is a single-phase alternating current motor;
according to the type judgment result of the isolating switch driving motor, a preset power calculation formula is called, and the power of the motor is calculated according to the voltage value and the current value;
and drawing a motor power curve according to the motor power of the isolating switch driving motor for a period of time, comparing the motor power curve with a preset motor power standard curve, and judging whether the motor power curve is qualified or not.
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| CN202310159479.2A CN116298496A (en) | 2023-02-23 | 2023-02-23 | Power detection system and method for multifunctional isolating switch driving motor |
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| CN202310159479.2A CN116298496A (en) | 2023-02-23 | 2023-02-23 | Power detection system and method for multifunctional isolating switch driving motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116990583A (en) * | 2023-07-28 | 2023-11-03 | 上海大速科技有限公司 | Three-phase asynchronous motor with actual output power detection feedback function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116990583A (en) * | 2023-07-28 | 2023-11-03 | 上海大速科技有限公司 | Three-phase asynchronous motor with actual output power detection feedback function |
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