CN118294738A - System and method for identifying breaker state of three-phase common operating mechanism - Google Patents
System and method for identifying breaker state of three-phase common operating mechanism Download PDFInfo
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Abstract
The application provides a system and a method for identifying the state of a breaker of a three-phase common operating mechanism, wherein the system comprises the following components: the plurality of sound pickups are arranged outside a three-phase arc extinguishing chamber of the three-phase common operating mechanism circuit breaker and are respectively used for collecting sound information when contacts of the three phases of the circuit breaker A, B, C are separated; the signal processing module is used for respectively converting the sound information of the A, B, C three-phase contact during the separation into A, B, C three-phase switching value signals and sending the A, B, C three-phase switching value signals to the identification module; the identification module is used for acquiring a closing or opening signal of the circuit breaker and identifying whether A, B, C three phases of the circuit breaker of the three-phase common operating mechanism are successfully closed or opened according to the closing or opening signal of the circuit breaker and the switching value signal of A, B, C three phases. According to the technical scheme provided by the application, whether the action condition of the contact of the circuit breaker is abnormal or not is accurately judged.
Description
Technical Field
The application relates to the field of electric equipment monitoring, in particular to a system and a method for identifying the state of a breaker of a three-phase common operating mechanism.
Background
The circuit breaker of the three-phase common operating mechanism is mainly used for a generator outlet circuit breaker, when the operating mechanism acts, a connecting rod of the circuit breaker is driven to act, so that three-phase contacts of the circuit breaker are separated and combined, a position node of the circuit breaker is positioned in the operating mechanism, when the circuit breaker of the three-phase common operating mechanism breaks under the condition of the connecting rod, an auxiliary position node of the circuit breaker cannot truly reflect the actual state of the three-phase contacts of the circuit breaker, and reverse power protection tripping logic of a protection device can be locked through a circuit breaker position signal (the circuit breaker opening position locks reverse power protection tripping), the generator can enter the reverse power state, manual intervention is needed after the judgment is carried out, a unit for releasing the reverse power operation by a jump-up-stage switch is needed, and meanwhile, equipment such as an arc-extinguishing chamber and a contact of the circuit breaker can be damaged.
At present, the contact position state of a switch is indirectly judged mainly by virtue of an auxiliary node of an operating mechanism, and the contact position of the switch cannot be directly judged due to structural reasons; there is also a method of directly observing the position of the breaker-shaped contacts by adding a camera in the breaker arc extinguishing chamber. The method I has the defects that the actual position of the contact of the circuit breaker cannot be directly judged, the method II has the defects that the transformation process is too complex and the maintenance difficulty is high, and the camera is directly placed in the arc extinguishing chamber of the circuit breaker to have potential safety hazards and is not suitable for large-scale popularization, so that the prior art is necessary to be improved.
Disclosure of Invention
The application provides a system and a method for identifying the state of a three-phase common operating mechanism breaker, which at least solve the technical problem that whether the action condition of a breaker contact is abnormal or not cannot be simply and accurately judged.
An embodiment of a first aspect of the present application proposes a system for identifying a breaker state of a three-phase common operating mechanism, the system comprising: a plurality of pickups, a signal processing module and an identification module;
The plurality of sound pickups are arranged outside a three-phase arc extinguishing chamber of the three-phase common operating mechanism circuit breaker, and are respectively used for collecting sound information when the contacts of the three phases of the circuit breaker A, B, C are separated and sending the sound information when the contacts of the three phases of the circuit breaker A, B, C are separated to the signal processing module;
The signal processing module is used for respectively converting sound information when the A, B, C three-phase contacts are separated into A, B, C three-phase switching value signals and sending the A, B, C three-phase switching value signals to the identification module;
The identification module is used for acquiring a closing or opening signal of the circuit breaker and identifying whether A, B, C three phases of the circuit breaker of the three-phase common operating mechanism are successfully closed or opened according to the closing or opening signal of the circuit breaker and the switching value signal of A, B, C three phases.
Preferably, the plurality of sound pickups are connected with the signal processing module through a cable with an electromagnetic shielding function.
Further, the sound information includes: loudness and pitch of voiceprints.
Further, the signal processing module includes: an a-phase signal processing unit, a B-phase signal processing unit, and a C-phase signal processing unit;
The A phase signal processing unit is used for converting sound information when the contacts of the A phase are separated into switching value signals of the A phase and sending the switching value signals of the A phase to the identification module;
the B phase signal processing unit is used for converting sound information when the contacts of the B phase are separated into switching value signals of the B phase and sending the switching value signals of the B phase to the identification module;
And the C-phase signal processing unit is used for converting the sound information generated when the contacts of the C phase are separated into switching value signals of the C phase and transmitting the switching value signals of the C phase to the identification module.
Further, the a-phase signal processing unit is further configured to determine an absolute value of a difference between a loudness in the sound information when the a-phase contact is separated and an a-phase loudness threshold, and if the absolute value of a difference between a loudness of the voiceprint and the a-phase loudness threshold is smaller than or equal to a first threshold and the absolute value of a difference between a pitch of the voiceprint and the a-phase pitch threshold is smaller than or equal to a second threshold, convert the sound information when the a-phase contact is separated into an a-phase switching signal 1, otherwise convert the sound information when the a-phase contact is separated into an a-phase switching signal 0;
The B-phase signal processing unit is further configured to determine an absolute value of a difference between a loudness of the sound information when the B-phase contact is separated and a B-phase loudness threshold, and if the absolute value of the difference between the loudness of the sound track and the B-phase loudness threshold is smaller than or equal to a first threshold and the absolute value of the difference between the pitch of the sound track and the B-phase pitch threshold is smaller than or equal to a second threshold, convert the sound information when the B-phase contact is separated into a B-phase switching signal 1, otherwise convert the sound information when the B-phase contact is separated into a B-phase switching signal 0;
The C-phase signal processing unit is further configured to determine an absolute value of a difference between a loudness of the sound information when the C-phase contact is separated and a C-phase loudness threshold, and if the absolute value of the difference between the loudness of the sound track and the C-phase loudness threshold is smaller than or equal to a first threshold and the absolute value of the difference between the tone of the sound track and the C-phase pitch threshold is smaller than or equal to a second threshold, convert the sound information when the C-phase contact is separated into a C-phase switching signal 1, otherwise convert the sound information when the C-phase contact is separated into a C-phase switching signal 0.
Further, the identification module is further configured to:
When the breaker is opened, judging whether an A-phase switching signal 1, a B-phase switching signal 1 and a C-phase switching signal 1 are received within a preset time period, if yes, judging that the three-phase opening of the breaker is in place, otherwise, judging that the opening of the breaker fails;
When the breaker is switched on, judging whether an A-phase switching signal 1, a B-phase switching signal 1 and a C-phase switching signal 1 are received within a preset time period, if yes, judging that the three-phase switching of the breaker is in place, otherwise, judging that the switching of the breaker fails.
Further, the identification module is further configured to:
when the breaker is opened, determining the phase of the non-received switching signal 1, and generating corresponding phase opening failure information based on the received phase of the switching signal 1;
When the breaker is closed, determining the phase of the non-received switching signal 1, and generating corresponding phase closing failure information based on the received phase of the switching signal 1.
Further, the identification system further comprises: an output module;
the output module is used for displaying the identification result of the identification module;
the output module is also used for sending the identification result to the external environment.
An embodiment of a second aspect of the present application provides a method for identifying a breaker state of a three-phase common operating mechanism, where the method includes:
Collecting sound information when contacts of three phases of the circuit breaker A, B, C are separated by utilizing a plurality of sound collectors arranged outside a three-phase arc extinguishing chamber of the three-phase common operating mechanism circuit breaker;
respectively converting sound information of the A, B, C three-phase contacts during the switching into A, B, C three-phase switching value signals;
And acquiring a closing or opening signal of the circuit breaker, and identifying whether A, B, C three phases of the three-phase common operating mechanism circuit breaker are closed or opened successfully according to the closing or opening signal of the circuit breaker and the switching value signal of A, B, C three phases.
An embodiment of the third aspect of the present application proposes a computer readable storage medium, on which a computer program is stored, which program, when being executed by a processor, implements a method as described in the embodiment of the first aspect.
The technical scheme provided by the embodiment of the application at least has the following beneficial effects:
The application provides a system and a method for identifying the state of a breaker of a three-phase common operating mechanism, wherein the system comprises the following components: a plurality of pickups, a signal processing module and an identification module; the plurality of sound pickups are arranged outside a three-phase arc extinguishing chamber of the three-phase common operating mechanism circuit breaker, and are respectively used for collecting sound information when the contacts of the three phases of the circuit breaker A, B, C are separated and sending the sound information when the contacts of the three phases of the circuit breaker A, B, C are separated to the signal processing module; the signal processing module is used for respectively converting sound information when the A, B, C three-phase contacts are separated into A, B, C three-phase switching value signals and sending the A, B, C three-phase switching value signals to the identification module; the identification module is used for acquiring a closing or opening signal of the circuit breaker and identifying whether A, B, C three phases of the circuit breaker of the three-phase common operating mechanism are successfully closed or opened according to the closing or opening signal of the circuit breaker and the switching value signal of A, B, C three phases. According to the technical scheme provided by the application, whether the action condition of the contact of the circuit breaker is abnormal or not is accurately judged.
Additional aspects and advantages of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the application.
Drawings
The foregoing and/or additional aspects and advantages of the application will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a first block diagram of a three-phase common operating mechanism breaker status identification system according to an embodiment of the present application;
fig. 2 is a block diagram of a signal processing module according to an embodiment of the present application;
FIG. 3 is a second block diagram of a three-phase common operating mechanism circuit breaker status identification system according to one embodiment of the present application;
fig. 4 is a flowchart of a method for identifying a breaker state of a three-phase common operating mechanism according to an embodiment of the present application;
Reference numerals
A pickup 1, a signal processing module 2, an identification module 3, an a-phase signal processing unit 2-1, a B-phase signal processing unit 2-2, a C-phase signal processing unit 2-3, and an output module 4.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application.
The application provides a system and a method for identifying the state of a breaker of a three-phase common operating mechanism, wherein the system comprises the following components: a plurality of pickups, a signal processing module and an identification module; the plurality of sound pickups are arranged outside a three-phase arc extinguishing chamber of the three-phase common operating mechanism circuit breaker, and are respectively used for collecting sound information when the contacts of the three phases of the circuit breaker A, B, C are separated and sending the sound information when the contacts of the three phases of the circuit breaker A, B, C are separated to the signal processing module; the signal processing module is used for respectively converting sound information when the A, B, C three-phase contacts are separated into A, B, C three-phase switching value signals and sending the A, B, C three-phase switching value signals to the identification module; the identification module is used for acquiring a closing or opening signal of the circuit breaker and identifying whether A, B, C three phases of the circuit breaker of the three-phase common operating mechanism are successfully closed or opened according to the closing or opening signal of the circuit breaker and the switching value signal of A, B, C three phases. The technical scheme provided by the application can accurately judge whether the action condition of the contact of the circuit breaker is abnormal or not.
The following describes a system and a method for identifying the state of a three-phase common operating mechanism breaker according to an embodiment of the present application with reference to the accompanying drawings.
Example 1
Fig. 1 is a block diagram of a three-phase common operating mechanism breaker state identification system according to an embodiment of the present application, and as shown in fig. 1, the identification system includes: a plurality of sound pickups 1, a signal processing module 2 and an identification module 3;
The plurality of pickups 1 are installed outside the three-phase explosion chamber of the three-phase common operating mechanism circuit breaker, the plurality of pickups 1 are used for gathering respectively the sound information when the contact of circuit breaker A, B, C three phases is divided, and will the sound information when the contact of circuit breaker A, B, C three phases is divided is sent to signal processing module 2, wherein, the sound information includes: loudness and pitch of voiceprints.
It should be noted that, the pickup 1 is the high accuracy pickup, and the number of a plurality of pickup 1 can be 3, and three pickup mounted positions are confirmed according to the structure scene of circuit breaker, need satisfy three high accuracy pickup and install the relative position at the circuit breaker contact and want unanimously, guarantee that the voiceprint signal that the high accuracy pickup gathered is unified.
The signal processing module 2 is configured to convert the sound information when the A, B, C three-phase contacts are separated into A, B, C three-phase switching value signals, and send the A, B, C three-phase switching value signals to the identification module 3;
The identification module 3 is configured to obtain a closing or opening signal of the circuit breaker, and identify whether A, B, C three phases of the three-phase common operating mechanism circuit breaker are closed or opened successfully according to the closing or opening signal of the circuit breaker and the switching value signal of A, B, C three phases.
In the embodiment of the present disclosure, the plurality of microphones 1 are connected with the signal processing module 2 through a cable having an electromagnetic shielding function, so as to avoid interference of a strong magnetic field on a voiceprint signal.
Fig. 1 is a schematic diagram of a system for identifying a breaker state of a three-phase common operating mechanism according to the present embodiment, and is not limited to the system of the present invention.
In the embodiment of the present disclosure, as shown in fig. 2, the signal processing module 2 includes: phase a signal processing unit 2-1, phase B signal processing unit 2-2, phase C processing unit 2-3;
The a-phase signal processing unit 2-1 is configured to convert sound information when the contacts of the a-phase are separated into a switching value signal of the a-phase, and send the switching value signal of the a-phase to the identification module 3;
the B-phase signal processing unit 2-2 is configured to convert the sound information when the contacts of the B-phase are separated into a switching value signal of the B-phase, and send the switching value signal of the B-phase to the identification module 3;
the C-phase signal processing unit 2-3 is configured to convert the sound information when the contacts of the C-phase are separated into a switching value signal of the C-phase, and send the switching value signal of the C-phase to the identification module 3.
Further, the phase a signal processing unit 2-1 is further configured to determine an absolute value of a difference between a loudness in the sound information when the phase a contacts are separated and an a phase loudness threshold, and if the absolute value of a difference between a loudness of the voiceprint and the a phase loudness threshold is smaller than or equal to a first threshold and the absolute value of a difference between a pitch of the voiceprint and the a phase pitch threshold is smaller than or equal to a second threshold, convert the sound information when the phase a contacts are separated into a phase switching signal 1, otherwise convert the sound information when the phase a contacts are separated into a phase switching signal 0;
The B-phase signal processing unit 2-2 is further configured to determine an absolute value of a difference between a loudness of the sound information when the B-phase contact is separated and a B-phase loudness threshold, and if the absolute value of the difference between the loudness of the sound track and the B-phase loudness threshold is smaller than or equal to a first threshold and the absolute value of the difference between the pitch of the sound track and the B-phase pitch threshold is smaller than or equal to a second threshold, convert the sound information when the B-phase contact is separated into a B-phase switching signal 1, otherwise convert the sound information when the B-phase contact is separated into a B-phase switching signal 0;
The C-phase signal processing unit 2-3 is further configured to determine an absolute value of a difference between a loudness of the sound information when the C-phase contact is separated and a C-phase loudness threshold, and if the absolute value of a difference between the loudness of the sound track and the C-phase loudness threshold is smaller than or equal to a first threshold and the absolute value of a difference between the tone of the sound track and the C-phase pitch threshold is smaller than or equal to a second threshold, convert the sound information when the C-phase contact is separated into a C-phase switching signal 1, and otherwise convert the sound information when the C-phase contact is separated into a C-phase switching signal 0.
The phase loudness threshold and the tone threshold are determined based on the condition of normal opening and closing of the brake.
In the disclosed embodiment, the identification module 3 is further configured to:
When the breaker is opened, judging whether an A-phase switching signal 1, a B-phase switching signal 1 and a C-phase switching signal 1 are received within a preset time period, if yes, judging that the three-phase opening of the breaker is in place, otherwise, judging that the opening of the breaker fails;
When the breaker is switched on, judging whether an A-phase switching signal 1, a B-phase switching signal 1 and a C-phase switching signal 1 are received within a preset time period, if yes, judging that the three-phase switching of the breaker is in place, otherwise, judging that the switching of the breaker fails.
Further, the identification module 3 is further configured to:
when the breaker is opened, determining the phase of the non-received switching signal 1, and generating corresponding phase opening failure information based on the received phase of the switching signal 1;
When the breaker is closed, determining the phase of the non-received switching signal 1, and generating corresponding phase closing failure information based on the received phase of the switching signal 1.
In an embodiment of the present disclosure, as shown in fig. 3, the identification system further includes: an output module 4;
the output module 4 is used for displaying the identification result of the identification module;
the output module 4 is further configured to send the identification result to an external environment, so as to be used by the external environment.
The external environment includes: monitoring signals, indicator light signals, protection logic locking and other external environments.
In summary, in the system for identifying the state of the breaker of the three-phase common operating mechanism provided in this embodiment, a high-precision pickup is installed near the breaker contact to collect and analyze the sound change condition generated by breaking the breaker contact, so as to accurately determine whether the action condition of the breaker contact is abnormal.
Example two
Fig. 4 is a flowchart of a method for identifying a state of a three-phase common operating mechanism circuit breaker according to an embodiment of the present application, as shown in fig. 4, the method includes:
Step 1: collecting sound information when contacts of three phases of the circuit breaker A, B, C are separated by utilizing a plurality of sound collectors arranged outside a three-phase arc extinguishing chamber of the three-phase common operating mechanism circuit breaker;
step 2: respectively converting sound information of the A, B, C three-phase contacts during the switching into A, B, C three-phase switching value signals;
Step 3: and acquiring a closing or opening signal of the circuit breaker, and identifying whether A, B, C three phases of the three-phase common operating mechanism circuit breaker are closed or opened successfully according to the closing or opening signal of the circuit breaker and the switching value signal of A, B, C three phases.
The sound pick-up devices are connected with the signal processing module through cables with electromagnetic shielding functions.
The sound information includes: loudness and pitch of voiceprints.
In the embodiment of the disclosure, the sound information when the contacts of the A phase are separated is converted into a switching value signal of the A phase by utilizing an A phase signal processing unit, and the switching value signal of the A phase is sent to the identification module;
The B-phase signal processing unit is used for converting the sound information when the contacts of the B phase are separated into switching value signals of the B phase, and transmitting the switching value signals of the B phase to the identification module;
And converting the sound information when the contacts of the C phase are separated into switching value signals of the C phase by using a C phase signal processing unit, and transmitting the switching value signals of the C phase to the identification module.
Specifically, an A phase signal processing unit is utilized to determine the absolute value of the difference between the loudness in the sound information when the A phase contact is separated and the A phase loudness threshold value, if the absolute value of the difference between the loudness in the sound track and the A phase loudness threshold value is smaller than or equal to a first threshold value and the absolute value of the difference between the tone in the sound track and the A phase tone threshold value is smaller than or equal to a second threshold value, the sound information when the A phase contact is separated is converted into an A phase switching signal 1, otherwise, the sound information when the A phase contact is separated is converted into an A phase switching signal 0;
Determining the absolute value of the difference between the loudness in the sound information when the B-phase contact is separated and the B-phase loudness threshold value by using a B-phase signal processing unit, and if the absolute value of the difference between the loudness in the sound information and the B-phase loudness threshold value is smaller than or equal to a first threshold value and the absolute value of the difference between the tone in the sound track and the B-phase pitch threshold value is smaller than or equal to a second threshold value, converting the sound information when the B-phase contact is separated into a B-phase switching signal 1, otherwise converting the sound information when the B-phase contact is separated into a B-phase switching signal 0;
And determining the absolute value of the difference between the loudness in the sound information when the C-phase contact is separated and the C-phase loudness threshold value by using the C-phase signal processing unit, and converting the sound information when the C-phase contact is separated into a C-phase switching signal 1 if the absolute value of the difference between the loudness in the sound information and the C-phase loudness threshold value is smaller than or equal to a first threshold value and the absolute value of the difference between the tone in the sound track and the C-phase tone threshold value is smaller than or equal to a second threshold value, otherwise converting the sound information when the C-phase contact is separated into a C-phase switching signal 0.
In the embodiment of the disclosure, when the breaker is opened, judging whether an A-phase switching signal 1, a B-phase switching signal 1 and a C-phase switching signal 1 are received within a preset time period, if yes, judging that the three-phase opening of the breaker is in place, otherwise, judging that the opening of the breaker fails;
When the breaker is switched on, judging whether an A-phase switching signal 1, a B-phase switching signal 1 and a C-phase switching signal 1 are received within a preset time period, if yes, judging that the three-phase switching of the breaker is in place, otherwise, judging that the switching of the breaker fails.
Further, when the breaker is opened, determining the phase of the non-received switching signal 1, and generating corresponding phase opening failure information based on the received phase of the switching signal 1;
When the breaker is closed, determining the phase of the non-received switching signal 1, and generating corresponding phase closing failure information based on the received phase of the switching signal 1.
In an embodiment of the disclosure, the method further comprises:
And displaying the identification result of the identification module and sending the identification result to an external environment.
In summary, the method for identifying the state of the three-phase common operating mechanism circuit breaker provided in the embodiment can accurately determine whether the action condition of the circuit breaker contact is abnormal.
Example III
In order to implement the above-described embodiments, the present disclosure also proposes a computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, implements the method as described in embodiment two.
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 are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and additional implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order from that shown or discussed, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present application.
While 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 system for identifying the status of a three-phase common operating mechanism circuit breaker, the system comprising: a plurality of pickups, a signal processing module and an identification module;
The plurality of sound pickups are arranged outside a three-phase arc extinguishing chamber of the three-phase common operating mechanism circuit breaker, and are respectively used for collecting sound information when the contacts of the three phases of the circuit breaker A, B, C are separated and sending the sound information when the contacts of the three phases of the circuit breaker A, B, C are separated to the signal processing module;
The signal processing module is used for respectively converting sound information when the A, B, C three-phase contacts are separated into A, B, C three-phase switching value signals and sending the A, B, C three-phase switching value signals to the identification module;
The identification module is used for acquiring a closing or opening signal of the circuit breaker and identifying whether A, B, C three phases of the circuit breaker of the three-phase common operating mechanism are successfully closed or opened according to the closing or opening signal of the circuit breaker and the switching value signal of A, B, C three phases.
2. The identification system of claim 1, wherein the plurality of pickups are connected to the signal processing module by a cable having an electromagnetic shielding function.
3. The identification system of claim 2, wherein the sound information comprises: loudness and pitch of voiceprints.
4. The identification system of claim 3, wherein the signal processing module comprises: an a-phase signal processing unit, a B-phase signal processing unit, and a C-phase signal processing unit;
The A phase signal processing unit is used for converting sound information when the contacts of the A phase are separated into switching value signals of the A phase and sending the switching value signals of the A phase to the identification module;
the B phase signal processing unit is used for converting sound information when the contacts of the B phase are separated into switching value signals of the B phase and sending the switching value signals of the B phase to the identification module;
And the C-phase signal processing unit is used for converting the sound information generated when the contacts of the C phase are separated into switching value signals of the C phase and transmitting the switching value signals of the C phase to the identification module.
5. The recognition system of claim 4, wherein the a-phase signal processing unit is further configured to determine an absolute value of a difference between a loudness of the sound information when the a-phase contact is engaged and an a-phase loudness threshold, an absolute value of a difference between a pitch of the voiceprint and an a-phase pitch threshold, and if the absolute value of the difference between the loudness and the a-phase loudness threshold is equal to or less than a first threshold and the absolute value of the difference between the pitch of the voiceprint and the a-phase pitch threshold is equal to or less than a second threshold, convert the sound information when the a-phase contact is engaged into an a-phase switching signal 1, and otherwise convert the sound information when the a-phase contact is engaged into an a-phase switching signal 0;
The B-phase signal processing unit is further configured to determine an absolute value of a difference between a loudness of the sound information when the B-phase contact is separated and a B-phase loudness threshold, and if the absolute value of the difference between the loudness of the sound track and the B-phase loudness threshold is smaller than or equal to a first threshold and the absolute value of the difference between the pitch of the sound track and the B-phase pitch threshold is smaller than or equal to a second threshold, convert the sound information when the B-phase contact is separated into a B-phase switching signal 1, otherwise convert the sound information when the B-phase contact is separated into a B-phase switching signal 0;
The C-phase signal processing unit is further configured to determine an absolute value of a difference between a loudness of the sound information when the C-phase contact is separated and a C-phase loudness threshold, and if the absolute value of the difference between the loudness of the sound track and the C-phase loudness threshold is smaller than or equal to a first threshold and the absolute value of the difference between the tone of the sound track and the C-phase pitch threshold is smaller than or equal to a second threshold, convert the sound information when the C-phase contact is separated into a C-phase switching signal 1, otherwise convert the sound information when the C-phase contact is separated into a C-phase switching signal 0.
6. The identification system of claim 5, wherein the identification module is further configured to:
When the breaker is opened, judging whether an A-phase switching signal 1, a B-phase switching signal 1 and a C-phase switching signal 1 are received within a preset time period, if yes, judging that the three-phase opening of the breaker is in place, otherwise, judging that the opening of the breaker fails;
When the breaker is switched on, judging whether an A-phase switching signal 1, a B-phase switching signal 1 and a C-phase switching signal 1 are received within a preset time period, if yes, judging that the three-phase switching of the breaker is in place, otherwise, judging that the switching of the breaker fails.
7. The identification system of claim 6, wherein the identification module is further to:
when the breaker is opened, determining the phase of the non-received switching signal 1, and generating corresponding phase opening failure information based on the received phase of the switching signal 1;
When the breaker is closed, determining the phase of the non-received switching signal 1, and generating corresponding phase closing failure information based on the received phase of the switching signal 1.
8. The identification system of claim 7, wherein the identification system further comprises: an output module;
the output module is used for displaying the identification result of the identification module;
the output module is also used for sending the identification result to the external environment.
9. A method for identifying a three-phase common operating mechanism breaker state based on the identification system of the three-phase common operating mechanism breaker state according to any one of the preceding claims 1-8, characterized in that the method comprises:
Collecting sound information when contacts of three phases of the circuit breaker A, B, C are separated by utilizing a plurality of sound collectors arranged outside a three-phase arc extinguishing chamber of the three-phase common operating mechanism circuit breaker;
respectively converting sound information of the A, B, C three-phase contacts during the switching into A, B, C three-phase switching value signals;
And acquiring a closing or opening signal of the circuit breaker, and identifying whether A, B, C three phases of the three-phase common operating mechanism circuit breaker are closed or opened successfully according to the closing or opening signal of the circuit breaker and the switching value signal of A, B, C three phases.
10. A computer readable storage medium, on which a computer program is stored, which program, when being executed by a processor, implements the method according to claim 9.
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| CN202410369453.5A CN118294738A (en) | 2024-03-28 | 2024-03-28 | System and method for identifying breaker state of three-phase common operating mechanism |
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| CN202410369453.5A CN118294738A (en) | 2024-03-28 | 2024-03-28 | System and method for identifying breaker state of three-phase common operating mechanism |
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