CN116539988A - Transformer substation fault diagnosis method and device, electronic equipment and storage medium - Google Patents
Transformer substation fault diagnosis method and device, electronic equipment and storage medium Download PDFInfo
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Abstract
The invention discloses a transformer substation fault diagnosis method, a device, electronic equipment and a storage medium, which are characterized in that an original optical fiber link is maintained, optical signals before and after equipment to be detected are collected, a faulty target equipment and an abnormal item are preliminarily determined, then the optical fiber link is contacted, a detection signal is sent to the target equipment through a signal receiving and transmitting module, then the optical signals after passing through the target equipment are collected, the abnormal fault of the target equipment can be analyzed, and the fault type of the target equipment can be analyzed by combining the abnormal item. The link fault positioning process is simplified, the work flow is simple and efficient, the processing by an external manufacturer is not needed, and the operation of staff is convenient.
Description
Technical Field
The invention relates to the technical field of operation and maintenance of transformer substations, in particular to a transformer substation fault diagnosis method, a device, electronic equipment and a storage medium.
Background
Along with the high-speed development of domestic power systems, the digital power grid is continuously propelled, so that the intelligent transformer substation based on the IEC-61850 protocol is generated for meeting the power development requirements of the new era, and is a main melody of the station-end development of the future power transformation field. However, the intelligent substation is operated from the current ground implementation to the current ground implementation for only more than ten years, and related operation and maintenance overhauling technologies are obviously blank, wherein the link problem of the intelligent substation aimed at by the invention is one of the important reasons of the fault of the intelligent substation at present, the accident rate is high, the defect rate is low, and the fault positioning and defect time is long. The important reason for the situation is that, compared with the traditional transformer station, the optical fiber links among the devices in the intelligent transformer station replace the traditional cable wiring mode to play a role in transmitting total station information, and once the failure occurs, the signal uploading is seriously affected, the normal action is protected, and the safety of a power system is seriously ensured.
However, the link fault of the intelligent station is difficult to locate at present, the workflow is very complicated, related secondary operation and maintenance personnel have not completely controlled the new mode and the new technology, the corresponding high-efficiency operation and maintenance technology has not yet been formed, and most cases also need to be treated by external manufacturers, thus the intelligent station is a big pain point problem of daily operation and maintenance of the intelligent station at present.
Disclosure of Invention
The invention provides a transformer substation fault diagnosis method for solving the problem of transformer substation fault diagnosis.
In a first aspect, the present invention provides a substation fault diagnosis method, applied to a substation fault diagnosis device, where the substation fault diagnosis device includes a signal transceiver module, the signal transceiver module is communicatively connected to devices of the substation through an optical fiber link, the number of devices is plural, and in normal operation, the devices transmit optical signals in the substation through the optical fiber link, and the substation fault diagnosis method includes:
when a transformer substation breaks down, the signal receiving and transmitting module is used for collecting a first optical signal and a second optical signal which pass through the front and the back of equipment to be detected;
respectively analyzing the first optical signal and the second optical signal to obtain first message data and second message data;
Determining a target device with faults and abnormal items according to the first optical signal, the second optical signal, the first message data and the second message data, wherein the abnormal items comprise optical signal abnormality and message abnormality;
removing the optical fiber link of the target equipment, sending a third optical signal to the target equipment through the signal receiving and transmitting module, and collecting a fourth optical signal output by the target equipment;
respectively analyzing the third optical signal and the fourth optical signal to obtain third message data and fourth message data;
and determining the fault type of the target equipment according to the third optical signal, the fourth optical signal, the third message data, the fourth message data and the abnormal item, wherein the fault type comprises at least one of optical fiber link fault, logic link fault, optical module fault and equipment self fault.
In a second aspect, the present invention provides a substation fault diagnosis device, including:
the signal acquisition first module is used for acquiring a first optical signal and a second optical signal which pass through the front and back of the equipment to be detected when the transformer substation fails;
the message acquisition first module is used for respectively analyzing the first optical signal and the second optical signal to obtain first message data and second message data;
The fault positioning and determining module is used for determining target equipment and abnormal items with faults according to the first optical signal, the second optical signal, the first message data and the second message data, wherein the abnormal items comprise optical signal abnormality and message abnormality;
the signal acquisition second module is used for releasing the optical fiber link of the target equipment, sending a third optical signal to the target equipment through the signal receiving and transmitting module, and acquiring a fourth optical signal output by the target equipment;
the message obtaining second module is used for respectively analyzing the third optical signal and the fourth optical signal to obtain third message data and fourth message data;
the fault type determining module is configured to determine a fault type of the target device according to the third optical signal, the fourth optical signal, the third message data, the fourth message data and the abnormal item, where the fault type includes at least one of an optical fiber link fault, a logical link fault, an optical module fault and a device self fault.
In a third aspect, the present invention provides an electronic device, including:
at least one processor; a kind of electronic device with a high-performance liquid crystal display
A memory communicatively coupled to the at least one processor; wherein, the liquid crystal display device comprises a liquid crystal display device,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the substation fault diagnosis method according to the first aspect of the present invention.
In a fourth aspect, the present invention provides a computer readable storage medium storing computer instructions for causing a processor to implement the substation fault diagnosis method according to the first aspect of the present invention when executed.
According to the transformer substation fault diagnosis method provided by the embodiment of the invention, when a transformer substation breaks down, a signal receiving and transmitting module is used for collecting a first optical signal and a second optical signal which pass through the front and the back of equipment to be detected, and the first optical signal and the second optical signal are respectively analyzed to obtain first message data and second message data; determining a target device with faults and abnormal items according to the first optical signal, the second optical signal, the first message data and the second message data, wherein the abnormal items comprise optical signal abnormality and message abnormality, then removing an optical fiber link of the target device, sending a third optical signal to the target device through a signal receiving and transmitting module, collecting a fourth optical signal output by the target device, analyzing the third optical signal and the fourth optical signal respectively to obtain third message data and fourth message data, and determining the fault type of the target device according to the third optical signal, the fourth optical signal, the third message data, the fourth message data and the abnormal items, wherein the fault type comprises at least one of an optical fiber link fault, a logic link fault, an optical module fault and a device self fault.
The advantages of this embodiment are: the method comprises the steps of firstly keeping an original optical fiber link, collecting optical signals before and after equipment to be detected, preliminarily determining faulty target equipment and abnormal items, then contacting the optical fiber link, sending detection signals to the target equipment through a signal receiving and transmitting module, then collecting the optical signals after passing through the target equipment, analyzing the abnormal fault position of the target equipment, and then combining the abnormal items to analyze the fault type of the target equipment. The link fault positioning process is simplified, the work flow is simple and efficient, the processing by an external manufacturer is not needed, and the operation of staff is convenient.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a transformer substation fault diagnosis method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a fault diagnosis device for a transformer substation according to a first embodiment of the present invention;
fig. 3 is a flowchart of a substation fault diagnosis method provided in the second embodiment of the present invention;
fig. 4 is a schematic diagram of a fault diagnosis device for a transformer substation according to a second embodiment of the present invention;
fig. 5 is a schematic structural diagram of a fault diagnosis device for a transformer substation according to a third embodiment of the present invention;
fig. 6 is a schematic structural diagram of an electronic device according to a fourth embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
Example 1
Fig. 1 is a flowchart of a substation fault diagnosis method according to a first embodiment of the present invention, where the method may be applicable to a substation fault diagnosis situation, and the method may be performed by a substation fault diagnosis device, where the substation fault diagnosis device may be implemented in a form of hardware and/or software, and where the substation fault diagnosis device may be configured in an electronic device.
As shown in fig. 2, fig. 2 is a schematic diagram of a connection structure when a substation fault diagnosis device detects equipment, the number of the equipment 2 is multiple, two adjacent equipment 2 are linked through optical fiber links, a system for sharing resources and transmitting information is realized under the coordination of network operation, communication protocol and network management software so as to realize the transmission of optical signals in the equipment 2, the substation fault diagnosis device 1 comprises a signal transceiver module 11, the signal transceiver module 11 is also connected with the equipment through optical fibers, and a plurality of transceiver ports are arranged on the signal transceiver module 11 so as to collect the optical signals from the equipment 2 and transmit the optical signals to the equipment 2.
Each device is provided with an optical module, namely a photoelectric conversion module, and the optical module has the function of converting the electrical signals of the device into optical signals and converting the electrical signals into the optical signals, so that the optical signals can be transmitted in the optical fibers. The optical fibers connected between the devices are used for transmitting optical signals, after the optical signals sent by the previous device reach the current device, the current device converts the optical signals into electrical signals through the optical module so as to be used by the current device, the current device can also convert the electrical signals into the optical signals through the optical module, and the optical signals are transmitted to the next device through the optical fibers.
As shown in fig. 1, the substation fault diagnosis method includes:
s101, when a transformer substation fails, a first optical signal and a second optical signal which pass through the front and the rear of equipment to be detected are collected through a signal receiving and transmitting module.
The device to be detected is a device with possible faults, the fault range can be detected in advance through other detection devices, and then the device in the fault range is used as the device to be detected. For example, an optical fiber link detection device may be used to detect a failure point of an optical fiber link failure, and a range surrounded by two failure points may be used as the failure range.
When a transformer substation breaks down, the first optical signal and the second optical signal passing through the front and the back of the equipment to be detected can be acquired through the signal receiving and transmitting module, namely, the first optical signal is acquired at the signal input end of the equipment to be detected, and the second optical signal is acquired at the signal output of the equipment to be detected. The degree of change of the optical signal when passing through the device to be detected can be determined according to the first optical signal and the second optical signal, and the degree of change can be used as a basis for diagnosing specific faults of the device.
S102, respectively analyzing the first optical signal and the second optical signal to obtain first message data and second message data.
The transformer substation fault diagnosis device analyzes the collected optical signals according to the received optical signals in the signal receiving and transmitting module, effectively identifies optical parameters such as wavelength, optical power and the like of the optical signals, and simultaneously analyzes specific information of the optical signals to form message data.
Specifically, the substation fault diagnosis device may set a special optical signal analysis tool to analyze an optical signal to obtain message data, where the message data includes information such as a protocol header, a message type, a message length, a message entity, and the like.
S103, determining the failed target equipment and the abnormal item according to the first optical signal, the second optical signal, the first message data and the second message data.
The abnormal items include optical signal abnormality and message abnormality.
For the optical signals, comparing the first optical signal with the second optical signal, and firstly, judging whether the optical signals can be received or not; second, it may be determined whether the device to be detected outputs the second optical signal when the first optical signal is input into the device to be detected, and third, it may be determined whether the loss of the optical signal in the transmission process meets a preset light attenuation requirement. If the conditions are met, the optical signal is normal, and if the conditions are not met, the optical signal is abnormal.
The light attenuation problem inevitably exists in the light propagation process, and the main factors causing the attenuation of the optical fiber are as follows: intrinsic, bending, extrusion, impurity, non-uniformity, butt joint, etc. Therefore, it is difficult to keep the first optical signal and the second optical signal consistent, but in a normal transmission case, the first optical signal and the second optical signal should satisfy a preset light attenuation requirement, for example, a ratio of light intensities in the first optical signal and the second optical signal should satisfy the preset light attenuation requirement.
For the message data, comparing the first message data with the second message data, on one hand, judging whether the to-be-detected equipment outputs the second message data or not under the condition that the first message data is input into the to-be-detected equipment, on the other hand, determining whether the message data can be correctly transmitted in the transmission process or not, if so, the message is normal, and if not, the message is abnormal.
The comparison of optical signals is generally to compare characteristic amounts of optical signals, such as light intensity, wavelength, optical power, and the like. The comparison of the messages is generally to compare the data length, the message content, the message format and the like of the messages, so that abnormal frame loss and message errors can be prevented correspondingly.
When the optical signal is abnormal or the message is abnormal, the equipment to be detected can be used as the target equipment with faults, namely the target equipment is screened out from the equipment to be detected. Generally, each time a substation fails, the number of failed target devices is small, for example, 1-2.
S104, releasing the optical fiber link of the target equipment, sending a third optical signal to the target equipment through the signal receiving and transmitting module, and collecting a fourth optical signal output by the target equipment.
The target device is originally connected layer by layer through the optical fiber link, and in order to obtain more fault diagnosis information, the optical fiber link contacting the target device, namely, the original optical fiber connected with the target device is released.
The signal receiving and transmitting module not only has a signal acquisition function, but also has a signal transmitting function. The signal transceiver module may modulate a specific optical signal, i.e., a third optical signal, and send the specific optical signal to the target device through the optical fiber. And acquiring a fourth optical signal output by the target equipment, wherein the fourth optical signal is the fourth optical signal output after being transmitted by the target equipment. The whole process simulates the transmission link of the optical signal in the target equipment under the condition of normal connection of the optical fiber link, and can diagnose the internal condition of the target equipment.
Specifically, the substation fault diagnosis device sets the wavelength, the optical power and the like of an optical signal and simulates a link transmission signal in the substation, generates a specified optical signal, namely a third optical signal, through a high-power laser, and sends the specified optical signal to specified equipment to be detected through an optical fiber link through a specified sending port of the signal receiving and sending module.
S105, respectively analyzing the third optical signal and the fourth optical signal to obtain third message data and fourth message data.
Likewise, a special optical signal analysis tool can be used for analyzing the optical signal to obtain the message data.
S106, determining the fault type of the target equipment according to the third optical signal, the fourth optical signal, the third message data, the fourth message data and the abnormal item.
The failure type includes at least one of a fiber link failure, a logical link failure, an optical module failure, and a device itself failure.
For the optical signals, comparing the third optical signal with the fourth optical signal, on one hand, whether the equipment to be detected outputs the fourth optical signal or not under the condition that the third optical signal is input into the equipment to be detected can be judged, on the other hand, whether the loss of the optical signal in the transmission process meets the preset optical attenuation requirement or not can be determined, if so, the optical signal is normal, and if not, the optical signal is abnormal.
For the message data, comparing the first message data with the second message data, on one hand, judging whether the device to be detected outputs fourth message data or not under the condition that the third message data is input into the device to be detected, on the other hand, determining whether the message data can be correctly transmitted in the transmission process, if so, the message is normal, and if not, the message is abnormal.
And obtaining the transmission link of the optical signals in the target equipment in the whole process of the third optical signal and the fourth optical signal, namely under the condition of simulating normal connection of the optical fiber link. The internal condition of the target device can be diagnosed.
The target device is a failed device, i.e. at least one abnormal item exists, and the abnormal item comprises an optical signal abnormality and a message abnormality.
Optical fiber (communication) links are divided into logical links and physical links, the physical links are composed of media, the logical links are provided with data transmission control capability, the logical links are data links established by virtual circuits, only data can be transmitted on the logical links, and the physical links are the basis for the formation of the logical links.
If the abnormal item is abnormal optical signal, indicating that the physical link of the target equipment has a fault, and if the optical signal is normal when the optical signal is more than the third optical signal and the fourth optical signal, indicating that the optical link connected with the target equipment has a fault because the optical signal is abnormal when the optical link is not released, and the optical link is restored to normal after the optical link is released; if the optical signal is abnormal at this time, the fault is irrelevant to the connected optical fiber link, but the target device has abnormality in the optical-electrical signal conversion process or the electrical-optical signal conversion process, namely the target device has an optical module fault.
The message is obtained according to the communication procedure, namely, the logical link determines the transmission condition of the message, if the abnormal item is only abnormal, the logical link fault of the target equipment is described, if the message is normal for the third message data and the fourth message data, the logical link of the original optical fiber link is described as the logical link configuration fault, if the message is still abnormal, the original optical fiber link is described as the normal, and the target equipment has the equipment self fault.
Optical fiber link failure, e.g., a broken optical fiber link, cannot transmit optical signals.
The failure of the device itself, specifically, for example, the device crashes, results in the inability to transmit and receive optical signals.
In order to prevent ambiguity, it should be noted that the optical module belongs to one module in the target device, but the optical module fault belongs to one typical fault in the fault diagnosis of the transformer substation, so that the optical module fault is independently proposed and distinguished from other faults, and accords with the cognition and operation habit of technicians. Namely, the faults of the equipment are divided into optical module faults and equipment self faults, wherein the equipment self faults are other equipment faults except the optical module faults.
According to the transformer substation fault diagnosis method provided by the embodiment of the invention, when a transformer substation breaks down, a signal receiving and transmitting module is used for collecting a first optical signal and a second optical signal which pass through the front and the back of equipment to be detected, and the first optical signal and the second optical signal are respectively analyzed to obtain first message data and second message data; determining a failed target device and an abnormal item according to the first optical signal, the second optical signal, the first message data and the second message data, wherein the abnormal item comprises an optical signal abnormality and a message abnormality, removing an optical fiber link of the target device, sending a third optical signal to the target device through a signal receiving and transmitting module, collecting a fourth optical signal output by the target device, respectively analyzing the third optical signal and the fourth optical signal to obtain third message data and fourth message data, and determining the fault type of the target device according to the third optical signal, the fourth optical signal, the third message data, the fourth message data and the abnormal item, wherein the fault type comprises at least one of an optical fiber link fault, a logic link fault, an optical module fault and a device self fault.
The advantages of this embodiment are: the method comprises the steps of firstly keeping an original optical fiber link, collecting optical signals before and after equipment to be detected, preliminarily determining faulty target equipment and abnormal items, then contacting the optical fiber link, sending detection signals to the target equipment through a signal receiving and transmitting module, then collecting the optical signals after passing through the target equipment, analyzing the abnormal fault position of the target equipment, and then combining the abnormal items to analyze the fault type of the target equipment. The link fault positioning process is simplified, the work flow is simple and efficient, the processing by an external manufacturer is not needed, and the operation of staff is convenient.
Example two
Fig. 3 is a flowchart of a substation fault diagnosis method provided by the second embodiment of the present invention, where the optimization is performed on the basis of the first embodiment of the present invention, and as shown in fig. 3, the substation fault diagnosis method includes:
and S301, when the transformer substation breaks down, obtaining fault data of the transformer substation.
The transformer substation is correspondingly provided with a fault database, data acquisition is carried out through the intelligent intellectual property wave recording device, the data are stored in the fault database, and provided alarm signals, link information, abnormal messages and the like are acquired. In this embodiment, the substation fault diagnosis apparatus as in fig. 4 includes a signal transceiving module 11, a data importing module 12, an information analyzing module 13, and a fault diagnosis module 14. The signal transceiver module 11, the data importing module 12 and the fault diagnosing module 14 are respectively connected with the information analyzing module 13.
Specifically, the data importing module 12 may import the basic data files of the secondary system of the existing transformer substation, such as the full-station SCD (Substation Configuration Descroption, transformer substation function configuration) file, the ICD (IED Capability Descroption, IED capability description) file, etc., the information analyzing module 13 may analyze the actual configuration of the secondary circuit in the outbound, such as the link connection configuration between relay protection devices and the logic connection between virtual terminals, so as to implement the visualization of the secondary circuit and the correspondence of virtual and real circuits,
the SCD file is a model file for integrating all IEDs (Intelligent Electronic Device, intelligent electronic devices) of the substation, and the ICD file is an IED capability description file provided by an IED equipment manufacturer.
S302, determining a fault range and estimating an initial fault type based on the fault data.
It is easier to obtain the fault range from the fault data, e.g. each device may feed back a signal, or be provided with a signal light, the color of which is related to whether or not a light signal can be received. The fault range may be determined from the feedback signal or information represented by the signal light. The step can be used for primarily diagnosing the fault type and reducing the fault detection range.
Based on the current fault data, the initial fault type can be estimated according to the message data, the optical information and the fault type analysis data collected by the background fault database history.
S303, judging whether the initial fault type is an optical fiber link fault.
If not, S304 is performed. If the optical fiber link is determined to be faulty, the optical signal cannot be transmitted when the optical fiber link is faulty, the optical fiber link is normal as a basic condition for optical signal transmission, and when the optical fiber link is abnormal, other faults do not need to be checked temporarily. Namely, the optical fiber fault belongs to a physical fault, and at the moment, the optical signal acquisition and message grabbing are not needed.
It should be noted that, regarding the initial failure type, it may not be determined, and if it is not determined, S304 is still executed. That is, S304 may be performed as long as the initial failure type is not a fiber link failure.
S304, taking the equipment in the fault range as equipment to be detected, and establishing communication connection between the equipment to be detected and the signal receiving and transmitting module.
When the initial fault type is not the optical fiber link fault, the equipment in the fault range can be used as equipment to be detected so as to prepare for fault diagnosis of the equipment to be detected. And then, the equipment to be detected is in communication connection with the signal receiving and transmitting module, the receiving and transmitting port of the equipment to be detected is connected with the signal receiving and transmitting module through an optical fiber, and a signal lamp is arranged at the receiving and transmitting port on the signal receiving and transmitting module, and the color of the lamp is related to whether the normal connection can be realized. For example, the color of the lamp is green in normal connection, and red in abnormal connection.
S305, collecting a first optical signal and a second optical signal which pass through the front and the back of the equipment to be detected through a signal receiving and transmitting module.
S306, respectively analyzing the first optical signal and the second optical signal to obtain first message data and second message data.
S307, determining the failed target equipment and the abnormal item according to the first optical signal, the second optical signal, the first message data and the second message data.
The abnormal items include optical signal abnormality and message abnormality.
Specifically, whether the characteristic quantities of the first optical signal and the second optical signal meet the preset light attenuation requirement can be judged; the characteristic quantities of the optical signal include wavelength, light intensity and optical power.
If not, determining the equipment to be detected as the target equipment with faults, and determining the abnormal item as the optical signal abnormality; if yes, judging whether the second message data is normal or not according to the first message data; and when the second message data is abnormal, determining that the equipment to be detected is the target equipment with faults, and determining that the abnormal item is the message abnormality.
Wherein, judge whether the feature quantity of first light signal, second light signal satisfies the demand of presetting light decay, include: determining a preset light attenuation range of the characteristic quantity aiming at each characteristic quantity in the first optical signal and the second optical signal; calculating the ratio of the characteristic quantity in the second optical signal to the characteristic quantity of the first optical signal to obtain an optical attenuation value; and when the light attenuation value is within the preset light attenuation range, determining a preset light attenuation requirement.
Preferably, the data comparison in this example is implemented using a multi-strategy cuckoo algorithm written based on the python language.
S308, removing the optical fiber link of the target equipment, sending a third optical signal to the target equipment through the signal receiving and sending module, and collecting a fourth optical signal output by the target equipment.
S309, respectively analyzing the third optical signal and the fourth optical signal to obtain third message data and fourth message data.
S310, determining the fault type of the target equipment according to the third optical signal, the fourth optical signal, the third message data, the fourth message data and the abnormal item.
The failure type includes at least one of a fiber link failure, a logical link failure, an optical module failure, and a device itself failure.
Specifically, when the abnormal item is that the optical signal is abnormal, judging whether the characteristic quantities of the third optical signal and the fourth optical signal meet the preset light attenuation requirement or not; if yes, determining that the fault type of the target equipment is an optical fiber link fault, and if not, determining that the fault type of the target equipment is an optical module fault; judging whether the fourth message data is normal or not according to the third message data when the abnormal item is message abnormality, if so, determining that the fault type of the target equipment is a logic link fault; if not, determining the fault type of the target equipment as the equipment self fault.
S311, determining the number corresponding to the target device.
Each target device corresponds to a number, which is equivalent to the identity information of the target device.
S312, determining a fault processing method according to the fault type and a preset fault processing strategy.
S313, generating a fault diagnosis report according to the number, the fault type and the fault processing method corresponding to the target equipment.
And various results obtained by an information analysis module in the transformer substation fault diagnosis device, such as inconsistent message data, are combined with a typical fault database in the device to diagnose fault reasons, locate fault points and provide a common fault processing method, and finally a corresponding fault diagnosis report is generated, wherein the fault diagnosis report can be an excel file, can be derived by a U disk, and is convenient for machine account establishment and fault analysis. The fault processing method is commonly used for replacing optical fibers and optical modules, updating the configuration of a down-loading logic link and the like.
On one hand, the maintenance is convenient for operators to directly carry out maintenance according to the fault diagnosis report, the maintenance efficiency is improved, and on the other hand, the fault diagnosis report can be continuously stored in a fault database, so that the fault data can be conveniently called later, and the maintenance mode is improved.
The advantages of this embodiment are: before diagnosis is carried out by adopting the transformer substation diagnosis device, the fault range is determined firstly to narrow the range of equipment to be detected, the fault type is preliminarily estimated according to historical data, the waste of detection resources is avoided, in the detection process, an original optical fiber link is firstly maintained, optical signals before and after the equipment to be detected are collected, the target equipment and an abnormal item of the fault are preliminarily determined, then the optical fiber link is contacted, a detection signal is sent to the target equipment through a signal receiving and transmitting module, then the optical signal after the target equipment is collected, the abnormal fault of the target equipment can be analyzed, and the fault type of the target equipment can be analyzed by combining the abnormal item. The link fault positioning process is simplified, the work flow is simple and efficient, the processing by an external manufacturer is not needed, and the operation of staff is convenient.
Example III
Fig. 5 is a schematic structural diagram of a fault diagnosis device for a transformer substation according to a third embodiment of the present invention. As shown in fig. 5, the substation fault diagnosis apparatus includes:
the signal acquisition first module 501 is configured to acquire a first optical signal and a second optical signal before and after passing through a device to be detected when a transformer substation fails;
a first message obtaining module 502, configured to respectively parse the first optical signal and the second optical signal to obtain first message data and second message data;
a fault locating and determining module 503, configured to determine, according to the first optical signal, the second optical signal, the first packet data, and the second packet data, a target device and an abnormal item that have a fault, where the abnormal item includes an optical signal abnormality and a packet abnormality;
a second signal acquisition module 504, configured to release the optical fiber link of the target device, send a third optical signal to the target device through the signal transceiver module, and acquire a fourth optical signal output by the target device;
a second message obtaining module 505, configured to parse the third optical signal and the fourth optical signal to obtain third message data and fourth message data respectively;
And a fault type determining module 506, configured to determine a fault type of the target device according to the third optical signal, the fourth optical signal, the third packet data, the fourth packet data, and the abnormal item, where the fault type includes at least one of an optical fiber link fault, a logical link fault, an optical module fault, and a device self fault.
The substation fault diagnosis device shown in fig. 5 is a schematic block diagram given according to the functions thereof, and the blocks may have the same or partially the same functions as the blocks included in the substation fault diagnosis device shown in fig. 2 and 4.
In an alternative embodiment, the substation fault diagnosis device further includes:
the fault data acquisition module is used for acquiring fault data of the transformer substation;
the initial positioning and estimating module is used for determining a fault range and estimating an initial fault type based on the fault data;
the fault type judging module is used for judging whether the initial fault type is an optical fiber link fault or not; if not, executing the content executed by the equipment to be detected determining module;
and the equipment to be detected determining module is used for taking equipment in the fault range as equipment to be detected, and establishing communication connection between the equipment to be detected and the signal receiving and transmitting module.
In an alternative embodiment, the fault locating and determining module 503 includes:
the optical signal judging sub-module is used for judging whether the characteristic quantities of the first optical signal and the second optical signal meet the preset light attenuation requirement or not; if not, the target equipment determines the content executed by the sub-module; if yes, executing the content executed by the message data judging sub-module
A target device determining submodule, configured to determine that the device to be detected is a target device with a fault, and determine that an abnormal item is an optical signal abnormality;
the message data judging sub-module is used for judging whether the second message data is normal or not according to the first message data;
and the message abnormality determination submodule is used for determining that the equipment to be detected is the target equipment with faults when the second message data is abnormal, and determining that an abnormal item is the message abnormality.
In an alternative embodiment, the characteristic quantities of the optical signal include wavelength, optical intensity and optical power.
In an alternative embodiment, the optical signal determining sub-module includes:
a light attenuation range determining unit, configured to determine, for each feature quantity in the first light signal and the second light signal, a preset light attenuation range of the feature quantity;
The optical attenuation value calculation unit is used for calculating the ratio of the characteristic quantity in the second optical signal to the characteristic quantity of the first optical signal to obtain an optical attenuation value;
and the light attenuation conforming unit is used for determining a preset light attenuation requirement when the light attenuation value is within a preset light attenuation range.
In an alternative embodiment, the fault type determination module 506 includes:
the light attenuation requirement judging sub-module is used for judging whether the characteristic quantities of the third light signal and the fourth light signal meet the preset light attenuation requirement when the abnormal item is that the light signal is abnormal; if yes, executing the content executed by the optical fiber link fault determination sub-module, and if not, executing the content executed by the optical module fault determination sub-module;
the optical module fault determining sub-module is used for determining that the fault type of the target equipment is an optical module fault;
the optical fiber link fault determining submodule is used for determining that the fault type of the target equipment is an optical fiber link fault;
the message judging sub-module is used for judging whether the fourth message data is normal or not according to the third message data when the abnormal item is message abnormality, if so, executing the content executed by the logic link fault determining sub-module, and if not, executing the content executed by the equipment self fault determining sub-module;
A logic link fault determining sub-module, configured to determine that a fault type of the target device is a logic link fault;
and the equipment self-fault determination submodule is used for determining that the fault type of the target equipment is equipment self-fault.
In an alternative embodiment, the substation fault diagnosis device further includes:
the equipment number determining module is used for determining the number corresponding to the target equipment;
the fault processing method determining module is used for determining a fault processing method according to the fault type and a preset fault processing strategy;
and the fault diagnosis report generation module is used for generating a fault diagnosis report according to the number corresponding to the target equipment, the fault type and the fault processing method.
The transformer substation fault diagnosis device provided by the embodiment of the invention can execute the transformer substation fault diagnosis method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Example IV
Fig. 6 shows a schematic diagram of an electronic device 40 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 6, the electronic device 40 includes at least one processor 41, and a memory communicatively connected to the at least one processor 41, such as a Read Only Memory (ROM) 42, a Random Access Memory (RAM) 43, etc., in which the memory stores a computer program executable by the at least one processor, and the processor 41 may perform various suitable actions and processes according to the computer program stored in the Read Only Memory (ROM) 42 or the computer program loaded from the storage unit 48 into the Random Access Memory (RAM) 43. In the RAM 43, various programs and data required for the operation of the electronic device 40 may also be stored. The processor 41, the ROM 42 and the RAM 43 are connected to each other via a bus 44. An input/output (I/O) interface 45 is also connected to bus 44.
Various components in electronic device 40 are connected to I/O interface 45, including: an input unit 46 such as a keyboard, a mouse, etc.; an output unit 47 such as various types of displays, speakers, and the like; a storage unit 48 such as a magnetic disk, an optical disk, or the like; and a communication unit 49 such as a network card, modem, wireless communication transceiver, etc. The communication unit 49 allows the electronic device 40 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 41 may be various general and/or special purpose processing components with processing and computing capabilities. Some examples of processor 41 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 41 performs the various methods and processes described above, such as the substation fault diagnosis method.
In some embodiments, the substation fault diagnosis method may be implemented as a computer program, which is tangibly embodied on a computer-readable storage medium, such as the storage unit 48. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 40 via the ROM 42 and/or the communication unit 49. When the computer program is loaded into the RAM 43 and executed by the processor 41, one or more steps of the substation fault diagnosis method described above may be performed. Alternatively, in other embodiments, the processor 41 may be configured to perform the substation fault diagnosis method by any other suitable means (e.g. by means of firmware).
Various implementations of the systems and techniques described here above can be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), complex Programmable Logic Devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. A substation fault diagnosis method, which is characterized in that the method is applied to a substation fault diagnosis device, the substation fault diagnosis device comprises a signal transceiver module, the signal transceiver module is in communication connection with a plurality of devices of a substation through an optical fiber link, and in normal operation, the devices transmit optical signals in the substation through the optical fiber link, the substation fault diagnosis method comprises:
when a transformer substation breaks down, the signal receiving and transmitting module is used for collecting a first optical signal and a second optical signal which pass through the front and the back of equipment to be detected;
Respectively analyzing the first optical signal and the second optical signal to obtain first message data and second message data;
determining a target device with faults and abnormal items according to the first optical signal, the second optical signal, the first message data and the second message data, wherein the abnormal items comprise optical signal abnormality and message abnormality;
removing the optical fiber link of the target equipment, sending a third optical signal to the target equipment through the signal receiving and transmitting module, and collecting a fourth optical signal output by the target equipment;
respectively analyzing the third optical signal and the fourth optical signal to obtain third message data and fourth message data;
and determining the fault type of the target equipment according to the third optical signal, the fourth optical signal, the third message data, the fourth message data and the abnormal item, wherein the fault type comprises at least one of optical fiber link fault, logic link fault, optical module fault and equipment self fault.
2. The method of claim 1, further comprising, prior to collecting, by the signal transceiver module, the first optical signal and the second optical signal before and after passing through the device to be detected:
Acquiring fault data of a transformer substation;
determining a fault range and estimating an initial fault type based on the fault data;
judging whether the initial fault type is an optical fiber link fault or not;
if not, taking the equipment in the fault range as equipment to be detected, and establishing communication connection between the equipment to be detected and the signal receiving and transmitting module.
3. The method of claim 1, wherein the determining the failed target device and the abnormal item based on the first optical signal, the second optical signal, the first message data, and the second message data comprises:
judging whether the characteristic quantities of the first optical signal and the second optical signal meet the preset light attenuation requirement or not;
if not, determining the equipment to be detected as the target equipment with faults, and determining the abnormal item as the optical signal abnormality;
if yes, judging whether the second message data is normal or not according to the first message data;
and when the second message data is abnormal, determining that the equipment to be detected is the target equipment with faults, and determining that an abnormal item is the message abnormality.
4. A method as claimed in claim 3, wherein the characteristic quantities of the optical signal comprise wavelength, optical intensity and optical power.
5. The method of claim 3, wherein determining whether the characteristic amounts of the first optical signal and the second optical signal meet a preset light attenuation requirement comprises:
determining a preset light attenuation range of each characteristic quantity in the first optical signal and the second optical signal;
calculating the ratio of the characteristic quantity in the second optical signal to the characteristic quantity of the first optical signal to obtain an optical attenuation value;
and when the light attenuation value is within a preset light attenuation range, determining a preset light attenuation requirement.
6. The method of claim 1, wherein the determining the type of failure of the target device based on the third optical signal, the fourth optical signal, the third message data, the fourth message data, and the exception item comprises:
when the abnormal item is abnormal, judging whether the characteristic quantities of the third optical signal and the fourth optical signal meet the preset light attenuation requirement or not;
if yes, determining that the fault type of the target equipment is an optical fiber link fault;
if not, determining that the fault type of the target equipment is an optical module fault;
when the abnormal item is abnormal, judging whether the fourth message data is normal according to the third message data,
If yes, determining that the fault type of the target equipment is a logical link fault;
if not, determining the fault type of the target equipment as the self fault of the equipment.
7. The method of any one of claims 1-6, further comprising:
determining the number corresponding to the target equipment;
determining a fault processing method according to the fault type and a preset fault processing strategy;
generating a fault diagnosis report according to the number corresponding to the target equipment, the fault type and the fault processing method.
8. A substation fault diagnosis device, characterized by comprising:
the signal acquisition first module is used for acquiring a first optical signal and a second optical signal which pass through the front and back of the equipment to be detected when the transformer substation fails;
the message acquisition first module is used for respectively analyzing the first optical signal and the second optical signal to obtain first message data and second message data;
the fault positioning and determining module is used for determining target equipment and abnormal items with faults according to the first optical signal, the second optical signal, the first message data and the second message data, wherein the abnormal items comprise optical signal abnormality and message abnormality;
The signal acquisition second module is used for releasing the optical fiber link of the target equipment, sending a third optical signal to the target equipment through the signal receiving and transmitting module, and acquiring a fourth optical signal output by the target equipment;
the message obtaining second module is used for respectively analyzing the third optical signal and the fourth optical signal to obtain third message data and fourth message data;
the fault type determining module is configured to determine a fault type of the target device according to the third optical signal, the fourth optical signal, the third message data, the fourth message data and the abnormal item, where the fault type includes at least one of an optical fiber link fault, a logical link fault, an optical module fault and a device self fault.
9. An electronic device, the electronic device comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein, the liquid crystal display device comprises a liquid crystal display device,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the substation fault diagnosis method of any one of claims 1-7.
10. A computer readable storage medium, characterized in that it stores computer instructions for causing a processor to implement the substation fault diagnosis method according to any one of claims 1-7 when executed.
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