CN115267521A - Method and device for detecting working state of circuit breaker, computer equipment and medium - Google Patents
Method and device for detecting working state of circuit breaker, computer equipment and medium Download PDFInfo
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- CN115267521A CN115267521A CN202210886660.9A CN202210886660A CN115267521A CN 115267521 A CN115267521 A CN 115267521A CN 202210886660 A CN202210886660 A CN 202210886660A CN 115267521 A CN115267521 A CN 115267521A
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- 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
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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Abstract
The invention discloses a method and a device for detecting the working state of a circuit breaker, computer equipment and a medium. The method comprises the following steps: determining the opening and closing duration time of the three-phase circuit breaker; acquiring the current of a switching-on and switching-off coil of the circuit breaker; inputting the current of the opening and closing coils of the circuit breaker into an interference current information network model to determine the target current of the opening and closing coils of the circuit breaker; and determining the working state of the circuit breaker according to the opening and closing duration time of the three-phase circuit breaker and the target current of the opening and closing coil of the circuit breaker. The scheme realizes comprehensive evaluation of the running state of the circuit breaker and ensures safe and reliable running of a power grid.
Description
Technical Field
The embodiment of the invention relates to the technology of circuit breakers, in particular to a method and a device for detecting the working state of a circuit breaker, computer equipment and a medium.
Background
The circuit breaker is a mechanical switch appliance which is used for switching on and off the load current under normal circuit conditions or specified abnormal circuit conditions (such as short circuit) and within a certain time. The function of the circuit breaker in the power system is: on one hand, according to the operation requirement, part of the power equipment and the line are put into or taken out of operation, so that a good control function is achieved; on the other hand, when the power equipment or the line has a fault, the breaker is automatically disconnected through a brake separating signal sent by the current transformer and the relay protection system, and the fault part is quickly cut off, so that the normal operation of the fault-free part of the power system is ensured.
Because the circuit breaker has an important role in the power system, the running state of the circuit breaker is comprehensively evaluated, so that potential hazards and problems possibly existing in the circuit breaker can be found in time, active and active management and control measures are taken, the safe and reliable running of a power grid is ensured, and the problem to be solved at present is urgently needed. At present, a complete scheme for comprehensively evaluating the operating state of the circuit breaker is not disclosed.
Disclosure of Invention
The invention provides a method and a device for detecting the working state of a circuit breaker, computer equipment and a medium, which are used for comprehensively evaluating the running state of the circuit breaker and ensuring the safe and reliable running of a power grid.
In a first aspect, an embodiment of the present invention provides a method for detecting an operating state of a circuit breaker, where the method includes:
determining the opening and closing duration time of the three-phase circuit breaker;
acquiring the current of a switching-on and switching-off coil of the circuit breaker;
inputting the current of the opening and closing coil of the circuit breaker to an interference current information network model to determine the target current of the opening and closing coil of the circuit breaker;
and determining the working state of the circuit breaker according to the opening and closing duration time of the three-phase circuit breaker and the target current of the opening and closing coil of the circuit breaker.
Optionally, determining the working state of the circuit breaker according to the opening and closing duration time of the three-phase circuit breaker and the target current of the opening and closing coil of the circuit breaker, including:
when the opening and closing duration time of the three-phase circuit breaker is longer than the preset opening and closing time, or the opening and closing coil target current of the circuit breaker is larger than the preset target current, the working state of the circuit breaker is abnormal;
and when the opening and closing duration time of the three-phase circuit breaker is less than the preset opening and closing time, and the opening and closing coil target current of the circuit breaker is less than the preset target current, the working state of the circuit breaker is normal.
Optionally, the step of determining the interference current information network model includes:
acquiring historical breaker opening and closing coil current;
inputting the historical breaker opening and closing coil current into a current interference current information network model to be trained to obtain a training opening and closing coil current;
obtaining a loss function by adopting at least one given loss function expression and combining each training opening and closing coil current and the corresponding opening and closing standard coil current;
and reversely propagating the network model to be trained by adopting the loss function to determine the interference current information network model.
Optionally, the interference current information network model to be trained includes: the sensing device comprises a first sensing layer, a pooling layer, a full-connection layer, a second sensing layer and an excitation layer;
the parameters of the first sensing layer and the second sensing layer are different.
Optionally, the historical breaker opening and closing coil current is input into a current interference current information network model to be trained, and a training opening and closing coil current is obtained, including:
inputting the current of the historical breaker opening and closing coil into the sensing layer to obtain first characteristic data;
inputting the first characteristic data into the pooling layer to obtain pooling data;
inputting the pooling data into the full connection layer to obtain interference current information;
inputting the interference current information into a second sensing layer to obtain second characteristic data;
inputting the second characteristic data into the excitation layer to obtain optimized interference current information;
and determining the current of the training switching-on and switching-off coil according to the optimized interference current information and the historical switching-on and switching-off coil current of the circuit breaker.
Optionally, confirm the divide-shut brake duration of three-phase circuit breaker, include:
determining the starting time of the current of the opening and closing coil of the circuit breaker;
determining the time when the magnitude of each phase current in the A, B, C phase current magnitudes is zero or nonzero;
and determining the opening and closing duration time of the three-phase circuit breaker according to the size of the time when the phase current is zero or non-zero and the starting time.
In a second aspect, an embodiment of the present invention further provides a device for detecting an operating state of a circuit breaker, where the device includes:
the time determining module is used for determining the opening and closing duration time of the three-phase circuit breaker;
the current acquisition module is used for acquiring the opening and closing coil current of the circuit breaker;
the target current determining module is used for inputting the current of the breaker opening and closing coil to the interference current information network model so as to determine the target current of the breaker opening and closing coil;
and the working state determining module is used for determining the working state of the circuit breaker according to the opening and closing duration time of the three-phase circuit breaker and the target current of the opening and closing coil of the circuit breaker.
Optionally, the interference current information network model includes:
acquiring historical breaker opening and closing coil current;
inputting the historical breaker opening and closing coil current into a current interference current information network model to be trained to obtain a training opening and closing coil current;
obtaining a loss function by adopting at least one given loss function expression and combining each training opening and closing coil current and the corresponding opening and closing standard coil current;
and reversely propagating the network model to be trained by adopting the loss function to determine the interference current information network model.
In a third aspect, an embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the method for detecting the operating state of the circuit breaker according to the first aspect when executing the program.
In a fourth aspect, embodiments of the present invention further provide a storage medium containing computer-executable instructions, which when executed by a computer processor, are configured to perform the method for detecting the operating state of the circuit breaker according to any one of the first aspect.
According to the embodiment of the invention, the opening and closing duration time of the three-phase circuit breaker is determined; and the current of the opening and closing coil of the circuit breaker is obtained; inputting the current of the opening and closing coils of the circuit breaker into an interference current information network model to determine the target current of the opening and closing coils of the circuit breaker; and then determining the working state of the circuit breaker according to the opening and closing duration time of the three-phase circuit breaker and the target current of the opening and closing coil of the circuit breaker. Therefore, the running state of the circuit breaker is comprehensively evaluated, and the safe and reliable running of a power grid is ensured.
Drawings
Fig. 1 is a flowchart of a method for detecting an operating state of a circuit breaker according to an embodiment of the present invention;
fig. 2 is a flowchart of another method for detecting an operating state of a circuit breaker according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a device for detecting an operating state of a circuit breaker according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a computer device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a flowchart of a method for detecting an operating state of a circuit breaker according to an embodiment of the present invention, where the method is applicable to a situation of evaluating the operating state of the circuit breaker, and the method may be executed by a computer device, where the computer device may be formed by two or more physical entities or may be formed by one physical entity. Generally, the computer device may be a notebook, a desktop computer, a smart tablet, and the like. As shown in fig. 1, the method specifically includes the following steps:
and S110, determining the opening and closing duration of the three-phase circuit breaker.
In the embodiment, the three-phase circuit breakers are respectively connected in series to the three-phase power, and the three-phase circuit breakers control whether the three-phase power is connected or not through opening and closing; the opening duration of the three-phase circuit breaker can be understood as the time from the opening beginning to the opening ending of the three-phase circuit breaker in the opening process; the closing duration of the three-phase circuit breaker can be understood as the time from the beginning of closing to the end of opening in the closing process of the three-phase circuit breaker.
And S120, obtaining the current of the opening and closing coil of the circuit breaker.
The breaker opening coil current can be understood as irregular pulse change current of a coil in the opening process of each breaker after a starting voltage signal is applied to the opening coil; the current of the closing coil of the circuit breaker can be understood as the irregular pulse changing current of the coil in the closing process of each circuit breaker after a starting reverse voltage signal is applied to the closing coil. In this embodiment, the opening coil current of the circuit breaker and the closing coil current of the circuit breaker are both circuit breaker opening and closing coil current signals detected by the current sensor in real time.
S130, inputting the current of the opening and closing coil of the circuit breaker to the interference current information network model to determine the target current of the opening and closing coil of the circuit breaker;
the interference current information network model in this embodiment may be a neural network model for identifying interference current information. In the embodiment, the interference current information network model is obtained by training the switching-on and switching-off coil current of the historical circuit breaker in advance, and the parameters of the model are continuously adjusted according to the loss function in the training process, so that the interference current information network model meeting the requirements is finally obtained. The trained interference current information network model can directly input current data of the switching-on and switching-off coil of the circuit breaker to be detected, and the target current of the switching-on and switching-off coil of the circuit breaker is obtained according to learning experience. Because under different environment, the circuit breaker divide-shut brake coil current signal that directly detects through current sensor can have different interference, can get rid of different interference information in the circuit breaker divide-shut brake coil target current that the current information network model of interference learns like this, so accurate acquisition circuit breaker divide-shut brake coil target current.
And S140, determining the working state of the circuit breaker according to the opening and closing duration time of the three-phase circuit breaker and the target current of the opening and closing coil of the circuit breaker.
The working state of the circuit breaker can be comprehensively evaluated through the opening and closing duration time of the three-phase circuit breaker and the target current of the opening and closing coil of the circuit breaker, and specifically, when the opening and closing duration time of the three-phase circuit breaker is longer than the preset opening and closing time or the target current of the opening and closing coil of the circuit breaker is larger than the preset target current, the working state of the circuit breaker is abnormal; and when the opening and closing duration time of the circuit breaker is less than the preset opening and closing time, and the target current of the opening and closing coil of the circuit breaker is less than the preset target current, the working state of the circuit breaker is normal. According to the scheme, the operation state of the circuit breaker is comprehensively evaluated through the opening and closing duration time of the three-phase circuit breaker and the target current of the opening and closing coil of the circuit breaker, and the safe and reliable operation of a power grid is ensured.
On the basis of the foregoing embodiment, further optimization is performed, and fig. 2 is a flowchart of another method for detecting an operating state of a circuit breaker according to an embodiment of the present invention, as shown in fig. 2, the method specifically includes the following steps:
and S210, determining the starting time of the current of the opening and closing coil of the circuit breaker.
The circuit breaker comprises a switching-on and switching-off coil, a knife switch and a stationary contact, and a three-phase circuit breaker is arranged on a three-phase power line; when a certain starting voltage signal is applied to each opening coil, each opening coil enables the knife switch to be separated from the static contact, the three-phase electricity is disconnected, and the current signal of the three-phase electricity is a zero signal; when reverse starting voltage signals are applied to the switching-on coils, the switching-on coils enable the knife switch to be connected with the static contact, the three-phase power is connected, and current signals of the three-phase power are non-zero signals; in this embodiment, the starting time of the current of the opening coil of the three-phase circuit breaker is the time t1 when each opening coil applies a certain starting voltage signal, and generally, the time t1 when each opening coil applies a certain starting voltage signal is consistent; the starting time of the current of the closing coil of the circuit breaker is the time t1 'of applying a certain starting voltage signal to each closing coil, and generally, the time t1' of applying a certain starting voltage signal to each opening coil is consistent.
S220, determining the time when the current of each phase is zero or nonzero in the current of A, B, C phases.
Specifically, after a certain starting voltage signal is applied to each opening coil, the time ta, tb and tc when the phase current of the A, B, C phase is zero is determined by detecting the phase current of the A, B, C phase; after a certain starting voltage signal is applied to each opening coil, the time ta ', tb ', tc ' of each phase current in the phase current of A, B, C phase, which is not zero, is determined by detecting the magnitude of each phase current in the phase current of A, B, C phase.
And S230, determining the opening and closing duration time of the three-phase circuit breaker according to the size of the time when the phase current is zero or non-zero and the starting time.
Specifically, the opening duration of the three-phase circuit breaker is from the opening starting time to the opening ending time; the starting time of the opening is specifically the difference t2-t1 between the starting time t1 of the current of each opening coil and the time t2 when one phase current signal of the three-phase current is a non-zero signal at the earliest time; wherein; t2= min (ta, tb, tc); the time of the brake opening ending can be understood as the time t3 when one current signal of the three-phase power is finally a non-zero signal; t3= max (ta, tb, tc). The opening duration of the three-phase breaker is as follows: t3- (t 2-t 1); the closing duration of the three-phase circuit breaker is from the time of starting closing to the time of finishing closing; the starting time of closing is specifically the difference t2'-t1' between the starting time t1 'of the current of the opening coil and the time t2' when one phase current signal of the three-phase power is a non-zero signal at the earliest; wherein; t2'= min (ta', tb ', tc'); the time when the opening is finished can be understood as the time t3' when one current signal of the three-phase power is finally a non-zero signal; t3'= max (ta', tb ', tc'). The opening duration of the three-phase breaker is as follows: t3' - (t 2' -t1 '); therefore, when the opening duration time of the follow-up three-phase circuit breaker is longer than the preset opening time, or the closing duration time of the follow-up three-phase circuit breaker is longer than the preset closing time, the abnormal operation state of the circuit breaker is determined. Therefore, when the switching-off duration time of the follow-up three-phase circuit breaker is less than the preset switching-off time and the switching-on duration time of the follow-up three-phase circuit breaker is less than the preset switching-on time, the normal operation state of the circuit breaker is determined.
And S240, acquiring the current of the opening and closing coil of the circuit breaker.
And S250, inputting the current of the breaker opening and closing coil into the interference current information network model to determine the target current of the breaker opening and closing coil.
The interference current information network model determination in the embodiment includes the following steps:
and S01, obtaining historical breaker opening and closing coil current.
The historical circuit breaker opening and closing coil current is the circuit breaker opening and closing coil current to be trained; the circuit breaker opening and closing coil current to be trained comprises circuit breaker opening and closing coil current detected by a current sensor and circuit breaker closing coil current detected by the current sensor.
S02, inputting the current of the switching-on and switching-off coil of the historical circuit breaker into a current interference current information network model to be trained to obtain the current of the training switching-on and switching-off coil;
the network model to be trained can be understood as an untrained deep learning-based neural network model. The training of the opening and closing coil current can be specifically understood as inputting the corresponding historical breaker opening and closing coil current under the current iteration into the current interference current information network model to be trained, and predicting the interference current information network model to be trained according to the current network parameters to obtain the training opening and closing coil current.
Further, the interference current information network model to be trained comprises: the sensing device comprises a first sensing layer, a pooling layer, a full-connection layer, a second sensing layer and an excitation layer; the parameters of the first sensing layer are different from the parameters of the second sensing layer. More specifically, based on the composition of the to-be-trained interference current information network model, inputting the historical breaker switching-on/off coil current into the current to-be-trained interference current information network model to obtain a trained switching-on/off coil current, which includes: inputting the current of a switching-on and switching-off coil of a historical circuit breaker into a first sensing layer to obtain first characteristic data; exemplarily, the first sensing layer comprises a plurality of convolution layers, and the extraction of the current characteristics of the opening and closing coil of the circuit breaker can be rapidly improved; inputting the first characteristic data into a pooling layer to obtain pooling data; inputting the pooled data into a full connection layer to obtain interference current information; inputting interference current information into a second sensing layer to obtain second characteristic data; illustratively, the second sensing layer comprises a plurality of convolution layers, so that the extraction of interference current information characteristics can be rapidly improved; inputting the second characteristic data into the excitation layer to obtain optimized interference current information; illustratively, the excitation layer is formed by taking a Sigmoid function and a ReLU function as activation functions, and interference current information of current iteration can be further optimized; and determining the current of the training opening and closing coil according to the optimized interference current information and the current of the historical opening and closing coil of the circuit breaker, wherein the current of the opening and closing coil obtained through training does not contain an interference current information component.
And S03, obtaining a loss function by adopting at least one given loss function expression and combining each training opening and closing coil current and the corresponding opening and closing standard coil current.
The standard switching-on and switching-off coil current is usually marked manually or in other ways, and the standard coil current needs to be determined in advance before training. The loss function may employ a cross-entropy function or the like. And for each training opening and closing coil current, calculating by adopting a loss function expression according to the opening and closing standard coil current corresponding to the training opening and closing coil current, and determining the corresponding loss function.
And S04, reversely propagating the network model to be trained by adopting a loss function to determine the interference current information network model.
After the loss function is determined, the network model to be trained is subjected to back propagation by using the loss function, and the adjustment model is continuously updated until the output of the model is consistent with the target until the interference current information network model is obtained. The embodiment of the invention does not limit the specific reverse propagation process, and can be set according to specific conditions.
After the model training is finished, the current of the opening and closing coil of the circuit breaker can be accurately detected through the interference current information network model so as to determine the target current of the opening and closing coil of the circuit breaker.
And S260, determining the working state of the circuit breaker according to the opening and closing duration time of the three-phase circuit breaker and the target current of the opening and closing coil of the circuit breaker.
According to the scheme, on the basis of the scheme, how to determine the opening duration time of the three-phase circuit breaker and the closing duration time of the three-phase circuit breaker is further refined, and the abnormal operation of the circuit breaker is determined when the target current of a circuit breaker opening and closing coil is larger than the preset current, or when the opening duration time of the three-phase circuit breaker is larger than the preset opening time, or the closing duration time of the three-phase circuit breaker is larger than the preset closing time; according to the scheme, the running state of the circuit breaker is comprehensively evaluated, and the safe and reliable running of a power grid is ensured.
The embodiment of the invention also provides a device for detecting the working state of the circuit breaker, which can execute the method for detecting the working state of the circuit breaker provided by any embodiment of the invention and has corresponding functional modules and beneficial effects of the execution method. Fig. 3 is a schematic structural diagram of a device for detecting an operating state of a circuit breaker according to an embodiment of the present invention, and as shown in fig. 3, the device includes:
the duration determining module 10 is used for determining the opening and closing duration of the three-phase circuit breaker;
the current acquisition module 20 is used for acquiring the current of the opening and closing coil of the circuit breaker;
the target current determining module 30 is configured to input the breaker opening and closing coil current to the interference current information network model to determine the breaker opening and closing coil target current;
and the working state determining module 40 is used for determining the working state of the circuit breaker according to the opening and closing duration time of the three-phase circuit breaker and the target current of the opening and closing coil of the circuit breaker.
Optionally, the working state determining module 40 includes:
the first state determining unit is used for determining that the working state of the circuit breaker is abnormal when the opening and closing duration time of the three-phase circuit breaker is longer than the preset opening and closing time or the target current of the opening and closing coil of the three-phase circuit breaker is larger than the preset target current;
and the second state determining unit is used for determining that the working state of the circuit breaker is normal when the opening and closing duration time of the three-phase circuit breaker is less than the preset opening and closing time and the target current of the opening and closing coil of the circuit breaker is less than the preset target current.
Optionally, the apparatus further comprises:
the historical data acquisition module is used for acquiring the current of the opening and closing coil of the historical circuit breaker;
the training switching-on and switching-off coil current determining module is used for inputting the historical circuit breaker switching-on and switching-off coil current into a current interference current information network model to be trained to obtain a training switching-on and switching-off coil current;
the loss function determining module is used for obtaining a loss function by adopting at least one given loss function expression and combining the current of each training opening and closing coil and the current of the corresponding opening and closing standard coil;
and the back propagation module is used for performing back propagation on the network model to be trained by adopting the loss function so as to determine the interference current information network model.
Further, the interference current information network model to be trained includes: the sensing device comprises a first sensing layer, a pooling layer, a full-connection layer, a second sensing layer and an excitation layer;
the parameters of the first sensing layer and the second sensing layer are different.
Optionally, the training divide-shut brake coil current confirms the module, includes:
the first characteristic data determining unit is used for inputting the current of the historical breaker opening and closing coil into the sensing layer to obtain first characteristic data;
the pooling determination unit is used for inputting the first feature data into the pooling layer to obtain pooling data;
the interference current information determining unit is used for inputting the pooled data into the full connection layer to obtain interference current information;
the second characteristic data determining unit is used for inputting the interference current information to a second sensing layer to obtain second characteristic data;
the optimized interference current information determining unit is used for inputting the second characteristic data into the excitation layer to obtain optimized interference current information;
and determining the current of the training switching-on and switching-off coil according to the optimized interference current information and the historical current of the switching-on and switching-off coil of the circuit breaker.
Optionally, the duration determining module includes:
the first time determining unit is used for determining the starting time of the current of the opening and closing coil of the circuit breaker;
the second time determining unit is used for determining the time when the magnitude of each phase current in the magnitudes of the phase currents of A, B, C phases is zero or non-zero;
and the duration determining unit is used for determining the opening and closing duration of the circuit breaker according to the starting time and the size of the time when the phase current is zero or nonzero.
Fig. 4 is a schematic structural diagram of a computer apparatus according to an embodiment of the present invention, as shown in fig. 4, the apparatus includes a processor 70, a memory 71, an input device 72, and an output device 73; the number of processors 70 in the device may be one or more, and one processor 70 is taken as an example in fig. 4; the processor 70, the memory 71, the input device 72 and the output device 73 of the apparatus may be connected by a bus or other means, as exemplified by the bus connection in fig. 4.
The memory 71 is a computer-readable storage medium, and can be used for storing software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to a method for detecting an operating state of a circuit breaker according to an embodiment of the present invention. The processor 70 executes various functional applications and data processing of the device by running software programs, instructions and modules stored in the memory 71, so as to implement the method for detecting the operating state of the circuit breaker.
The memory 71 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 71 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory 71 may further include memory located remotely from the processor 70, which may be connected to the device/terminal/server over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 72 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the apparatus/terminal/server. The output device 73 may include a display device such as a display screen.
Embodiments of the present invention also provide a storage medium containing computer-executable instructions, which when executed by a computer processor, are configured to perform a method for detecting an operating state of a circuit breaker, the method including:
determining the opening and closing duration time of the three-phase circuit breaker;
acquiring the current of a circuit breaker opening and closing coil;
inputting the current of the opening and closing coil of the circuit breaker to an interference current information network model to determine the target current of the opening and closing coil of the circuit breaker;
and determining the working state of the circuit breaker according to the opening and closing duration time of the three-phase circuit breaker and the target current of the opening and closing coil of the circuit breaker.
Of course, the storage medium containing the computer-executable instructions provided by the embodiments of the present invention is not limited to the method operations described above, and may also perform related operations in a method for detecting an operating state of a circuit breaker provided by any embodiment of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
It should be noted that, in the embodiment of the search apparatus, each included unit and each included module are merely divided according to functional logic, but are not limited to the above division, as long as corresponding functions can be implemented; in addition, the specific names of the functional units are only for the convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method for detecting the working state of a circuit breaker is characterized by comprising the following steps:
determining the opening and closing duration time of the three-phase circuit breaker;
acquiring the current of a switching-on and switching-off coil of the circuit breaker;
inputting the current of the opening and closing coils of the circuit breaker into an interference current information network model to determine the target current of the opening and closing coils of the circuit breaker;
and determining the working state of the circuit breaker according to the opening and closing duration time of the three-phase circuit breaker and the target current of the opening and closing coil of the circuit breaker.
2. The method for detecting the working state of the circuit breaker according to claim 1, wherein the step of determining the working state of the circuit breaker according to the opening and closing duration time of the three-phase circuit breaker and the target current of the opening and closing coil of the circuit breaker comprises the following steps:
when the opening and closing duration time of the three-phase circuit breaker is longer than the preset opening and closing time, or the target current of the opening and closing coil of the circuit breaker is larger than the preset target current, the working state of the circuit breaker is abnormal;
and when the opening and closing duration time of the three-phase circuit breaker is less than the preset opening and closing time, and the target current of the opening and closing coil of the circuit breaker is less than the preset target current, the working state of the circuit breaker is normal.
3. The method for detecting the operating state of the circuit breaker according to claim 1, wherein the step of determining the interference current information network model comprises:
acquiring historical breaker opening and closing coil current;
inputting the historical breaker opening and closing coil current into a current interference current information network model to be trained to obtain a training opening and closing coil current;
obtaining a loss function by adopting at least one given loss function expression and combining each training opening and closing coil current and the corresponding opening and closing standard coil current;
and reversely propagating the network model to be trained by adopting the loss function to determine the interference current information network model.
4. The method for detecting the working state of the circuit breaker according to claim 3, wherein the interference current information network model to be trained comprises: the sensing device comprises a first sensing layer, a pooling layer, a full-connection layer, a second sensing layer and an excitation layer;
the parameters of the first sensing layer and the second sensing layer are different.
5. The method for detecting the working state of the circuit breaker according to claim 4, wherein the step of inputting the historical circuit breaker opening and closing coil current into a current interference current information network model to be trained to obtain a training opening and closing coil current comprises the following steps:
inputting the current of the historical breaker opening and closing coil into the sensing layer to obtain first characteristic data;
inputting the first characteristic data into the pooling layer to obtain pooling data;
inputting the pooled data to the full connection layer to obtain interference current information;
inputting the interference current information to a second sensing layer to obtain second characteristic data;
inputting the second characteristic data into the excitation layer to obtain optimized interference current information;
and determining the current of the training switching-on and switching-off coil according to the optimized interference current information and the historical switching-on and switching-off coil current of the circuit breaker.
6. The method for detecting the working state of the circuit breaker according to claim 1, wherein the step of determining the opening and closing duration of the three-phase circuit breaker comprises the following steps:
determining the starting time of the current of the opening and closing coil of the circuit breaker;
determining the time when the magnitude of each phase current in the A, B, C phase current magnitudes is zero or nonzero;
and determining the opening and closing duration time of the three-phase circuit breaker according to the size of the time when the phase current is zero or non-zero and the starting time.
7. A circuit breaker operating condition detecting device, characterized by comprising:
the duration determining module is used for determining the opening and closing duration of the three-phase circuit breaker;
the current acquisition module is used for acquiring the opening and closing coil current of the circuit breaker;
the target current determining module is used for inputting the current of the breaker opening and closing coil to the interference current information network model so as to determine the target current of the breaker opening and closing coil;
and the working state determining module is used for determining the working state of the circuit breaker according to the opening and closing duration time of the three-phase circuit breaker and the target current of the opening and closing coil of the circuit breaker.
8. The apparatus of claim 7, wherein the interference current information network model comprises:
acquiring historical breaker opening and closing coil current;
inputting the historical breaker opening and closing coil current into a current interference current information network model to be trained to obtain a training opening and closing coil current;
obtaining a loss function by adopting at least one given loss function expression and combining each training opening and closing coil current and the corresponding opening and closing standard coil current;
and reversely propagating the network model to be trained by adopting the loss function to determine the interference current information network model.
9. Computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor, when executing the computer program, implements the method for detecting the operating state of a circuit breaker according to any one of claims 1 to 6.
10. A storage medium containing computer-executable instructions for performing the circuit breaker operating condition detection method of any one of claims 1-6 when executed by a computer processor.
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| CN202210886660.9A CN115267521A (en) | 2022-07-26 | 2022-07-26 | Method and device for detecting working state of circuit breaker, computer equipment and medium |
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| CN202210886660.9A CN115267521A (en) | 2022-07-26 | 2022-07-26 | Method and device for detecting working state of circuit breaker, computer equipment and medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115902615A (en) * | 2023-01-09 | 2023-04-04 | 佰聆数据股份有限公司 | Method and device for analyzing defects of power circuit breaker |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115902615A (en) * | 2023-01-09 | 2023-04-04 | 佰聆数据股份有限公司 | Method and device for analyzing defects of power circuit breaker |
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