CN116298840A - Primary switch equipment action diagnosis method, device, equipment and storage medium - Google Patents
Primary switch equipment action diagnosis method, device, equipment and storage medium Download PDFInfo
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- G—PHYSICS
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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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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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- G—PHYSICS
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- G01R1/02—General constructional details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Abstract
The invention discloses a method, a device, equipment and a storage medium for diagnosing the action of primary switch equipment. The primary switch equipment action diagnosis method comprises the following steps: acquiring a protective wave recording file of the action of a protective device recorded in the electric power system; analyzing the protection wave recording file to obtain fault current information and protection action information of primary switch equipment of the power system; determining the opening action time length and/or closing action time length of the primary switch equipment based on the fault current information and the protection action information; and judging that the mechanical performance of the primary switch is faulty when the opening action time and/or the closing action time of the primary switch device are overtime. The protection wave recording file recorded based on the protection device realizes long-time monitoring of the primary switch equipment, reduces the workload of manual inspection, is easier to discover the mechanical performance faults of the primary switch equipment, and ensures the action reliability of the primary switch equipment.
Description
Technical Field
The present invention relates to the field of power system power equipment diagnosis technologies, and in particular, to a method, an apparatus, a device, and a storage medium for diagnosing a primary switching device.
Background
The power equipment in the power system is a lot and can be generally classified into an electric primary equipment and an electric secondary equipment. The primary equipment refers to equipment for directly producing, conveying, distributing and using electric energy, and the primary equipment and the equipment are mutually connected to form an electric main circuit for generating, transmitting and distributing electric energy.
The primary switching equipment of the power system is arranged in an outdoor environment in a large quantity, and the performance of switching actions is reduced due to the influence of the environment, mechanical performance and other reasons during long-term outdoor service. When the action performance of the switch is reduced and a power system fault occurs, the switch is easy to generate slow-split phenomenon, so that the fault is tripped in an override mode, the accident range is enlarged, and the action accuracy of the relay protection device is directly affected. At present, whether the action accuracy of the primary switch equipment is slow-division phenomenon is judged mainly by manually carrying out periodic outdoor inspection and replacement of new primary switch equipment, even a test is needed to find out the mechanical performance failure of the primary switch equipment, and a large amount of manpower and material resources are needed to be consumed to ensure the normal operation of the primary switch equipment.
Disclosure of Invention
The invention provides a primary switch equipment action diagnosis method, a primary switch equipment action diagnosis device, primary switch equipment action diagnosis equipment and a storage medium, so as to realize long-term monitoring of mechanical performance faults of primary switch equipment of a power system.
According to an aspect of the present invention, there is provided a one-time switching device operation diagnosis method including:
acquiring a protective wave recording file of the action of a protective device recorded in the electric power system;
analyzing the protection wave recording file to obtain fault current information and protection action information of primary switch equipment of the power system;
determining the opening action duration and/or closing action duration of the primary switch equipment based on the fault current information and the protection action information;
and judging that the mechanical performance of the primary switch fails when the opening action time and/or the closing action time of the primary switch device are overtime.
Optionally, the analyzing the protection wave recording file to obtain fault current information and protection action information of the primary switch device of the power system includes:
analyzing the protection wave recording file to obtain the fault current vanishing moment of primary switch equipment of the power system as fault current information;
analyzing the protection wave recording file to obtain the switching-on position change time, trip position change time, protection trip outlet time and protection reclosing outlet time of each phase of a primary switch of the power system as protection action information.
Optionally, after the analyzing the protection record file to obtain the fault current information and the protection action information of the primary switching device of the power system, the method further includes:
judging whether a reclosing signal exists in the power system or not;
and if the reclosing signal does not exist in the power system, judging the action of the switch.
Optionally, the determining the opening action duration and/or closing action duration of the primary switch device based on the fault current information and the protection action information includes:
if the phase-splitting tripping position signal exists, taking the maximum value of the time difference between the protection tripping outlet moment and the fault current vanishing moment of each phase as the switching-off action duration;
if the split-phase closing position signals exist, the maximum value of the time difference between the closing position change time of each phase and the protection reclosing exit time is taken as the closing action time.
Optionally, after the maximum value of the time difference between the protection trip outlet time and the fault current vanishing time of each phase is taken as the opening action duration if the split-phase trip position signal exists, the method further includes:
and if the split-phase tripping position signal does not exist, taking the time difference between the protection tripping outlet time and the fault current disappearance time of the power system as the switching-off action duration.
Optionally, after the maximum value of the time difference between the closing position change time of each phase and the protection reclosing exit time is taken as the closing action time if the split-phase closing position signal exists, the method further includes:
and if the split-phase closing position signal does not exist, taking the time difference between the closing position change time and the protection reclosing exit time of the power system as closing action time.
Optionally, when the time-out of the opening action duration and/or the closing action duration of the primary switch device determines that the mechanical performance of the primary switch is faulty, the method includes:
acquiring a preset switching-off timeout period and/or switching-on timeout period;
comparing the opening action time length of the primary switch device with the opening timeout time length;
when the opening action time is longer than the opening timeout time, judging that mechanical performance faults occur;
comparing the closing action time length of the primary switch device with the closing timeout time length;
and judging that the mechanical performance fault occurs when the closing action time is longer than the closing timeout time.
According to another aspect of the present invention, there is provided a one-time switching device operation diagnosis apparatus comprising:
the acquisition module is used for executing and acquiring a protective wave recording file of the action of the protective device recorded in the power system;
the analysis module is used for executing the analysis of the protection wave recording file to obtain fault current information and protection action information of primary switch equipment of the power system;
the determining module is used for determining the opening action duration and/or closing action duration of the primary switch equipment based on the fault current information and the protection action information;
and the judging module is used for judging that the mechanical performance fault occurs to the primary switch when the opening action time length and/or the closing action time length of the primary switch device are overtime.
According to another aspect of the present invention, there is provided a one-time switching device action diagnosis device including:
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 one-time switching device operation diagnosis method according to any one of the embodiments of the present invention.
According to another aspect of the present invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to implement the one-time switching device action diagnosis method according to any one of the embodiments of the present invention when executed.
According to the technical scheme, the protection wave recording file recorded by the protection device of the electric power system is obtained, then the fault current information and the protection action information of the primary switch equipment of the electric power system are obtained through analysis from the protection wave recording file, then the opening action time and the closing action time of the primary switch equipment are determined based on the fault current information and the protection action information, finally whether the mechanical performance fault occurs in the action of the primary switch equipment is judged based on the opening action time and the closing action time, long-time monitoring of the primary switch equipment is achieved based on the protection wave recording file recorded by the protection device, the workload of manual inspection is reduced, the mechanical performance fault of the primary switch equipment is easier to find, and the action reliability of the primary switch equipment is guaranteed.
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 primary switching device operation diagnosis method according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a primary switching device action diagnosis apparatus according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a primary switching device action diagnosis device according to a third 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.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
Fig. 1 is a flowchart of a primary switching device operation diagnosis method according to an embodiment of the present invention, where the method may be applied to a case of diagnosing operation performance of a primary switching device in an electric power system, and the method may be performed by a primary switching device operation diagnosis apparatus, which may be implemented in hardware and/or software, and the primary switching device operation diagnosis apparatus may be configured in a computer device, for example, a server, a workstation, a personal computer, or the like.
As shown in fig. 1, the method includes:
s110, acquiring a protective wave record file of the protective device action recorded in the power system.
In general, a power system is a unified whole composed of power generation, power supply (transmission, transformation, distribution), power utilization facilities, and secondary facilities such as an adjusting control and relay protection and safety automatic device, a metering device, dispatching automation, power communication and the like which are required for guaranteeing normal operation of the power system. Among them, devices directly used for producing and using electric energy are collectively called primary devices, and primary devices include generators (motors), transformers, circuit breakers, disconnectors, reclosers, contactors, knife switches, bus bars, transmission lines, power cables, reactors, and the like. The embodiment of the invention mainly aims at switch type equipment in primary equipment, namely the primary switch equipment in the embodiment of the invention, and can be specifically a circuit breaker, a disconnecting switch, an automatic switch, a contactor, a knife switch and the like.
The protection equipment is correspondingly arranged in the power system to protect and measure and control the operation of a generator (motor), a transformer, a circuit breaker, an isolating switch, an automatic switch, a contactor, a knife switch, a bus, a power transmission line, a power cable, a reactor and the like, and generates analog input and switching value input and output in the recording process of a protection wave recording file in the operation process, so that the operation state and the operation record of the generator (motor), the transformer, the circuit breaker, the isolating switch, the automatic switch, the contactor, the knife switch, the bus, the power transmission line, the power cable, the reactor and the like are determined based on the wave recording file in the later period.
In the embodiment of the invention, the monitoring of the slow-break phenomenon of the primary switch equipment is mainly aimed at, so that the protection wave recording file of the protection device arranged for the primary switch equipment is mainly obtained, and the information such as the state change and the action time of the primary switch equipment is recorded.
S120, analyzing the protection wave recording file to obtain fault current information and protection action information of primary switch equipment of the power system.
In the embodiment of the invention, the protection wave recording file records information of action contacts and state positions on the primary switch equipment such as a protection tripping outlet, a protection reclosing outlet, a tripping position, a closing position and the like of the primary switch equipment, and action information of the action contacts and the state positions, such as starting time, ending time and the like of the action, voltage and current information in the primary switch equipment and the like.
Based on the action information, voltage and current information of the protection tripping outlet, the protection reclosing outlet, the tripping position and the closing position stored in the protection wave recording file, fault current information and protection action information of the primary switch equipment in the working process can be determined. The fault current information can be information such as the magnitude, frequency, amplitude and the like of fault current flowing through the primary switch device in the working process. The abnormal current flowing in the working process of the primary switching equipment of the fault current can be caused by the conditions of short circuit, grounding, transient tree contact, bird or other animal contact, lightning strike, conductor collision and the like, and when the fault of the primary switching equipment or peripheral equipment generates the fault current, the primary switching equipment acts correspondingly to protect the normal and safe operation of other equipment. Wherein, the protected device is recorded in the protection record file after the primary switch device is operated. All that is required in the step is to analyze and obtain the fault current information and the protection action information of the primary switch device from the protection wave record file of the primary switch device.
S130, determining the opening action duration and/or the closing action duration of the primary switch equipment based on the fault current information and the protection action information.
In the step, the fault current information and the protection action information of the primary switch equipment are obtained through analysis, and in the step, the action duration of the primary switch equipment can be determined based on the fault current information and the protection action information, including the opening action duration and the closing action duration. The opening action time length refers to the action time length from the triggering of the switching device to the complete separation. The closing action time length refers to the action time length from the time when the primary switch device is triggered to close to the closing stability.
In the embodiment of the invention, the opening action time and the closing action time can be comprehensively calculated and obtained based on the occurrence and disappearance time of fault current and the action time of a protection tripping outlet, a protection reclosing outlet, a tripping position and a closing position.
And S140, judging that the mechanical performance of the primary switch fails when the opening action time and/or the closing action time of the primary switch device are overtime.
In the embodiment of the invention, the opening action time length and the closing action time length are respectively set with corresponding thresholds, and when the opening action time length or the closing action time length exceeds the preset thresholds, the abnormality of the opening action or the closing action of the primary switch equipment can be judged, and the mechanical performance fault occurs.
Furthermore, after the mechanical performance faults of the primary switch equipment are determined, warning information can be sent to the appointed client and the appointed server, so that a worker can determine the mechanical performance faults of the corresponding primary switch equipment, and the primary switch equipment can be timely maintained.
According to the embodiment of the invention, the protection wave recording file recorded by the protection device of the power system is obtained, then the fault current information and the protection action information of the primary switch equipment of the power system are obtained by analyzing the protection wave recording file, then the opening action time and the closing action time of the primary switch equipment are determined based on the fault current information and the protection action information, finally whether the mechanical performance fault occurs in the action of the primary switch equipment is judged based on the opening action time and the closing action time, the long-time monitoring of the primary switch equipment is realized based on the protection wave recording file recorded by the protection device, the workload of manual inspection is reduced, the mechanical performance fault of the primary switch equipment is easier to find, and the action reliability of the primary switch equipment is ensured.
In an embodiment of the present invention, S120 may include:
s121, analyzing the protection wave recording file to obtain the fault current vanishing moment of primary switch equipment of the power system as fault current information;
s122, analyzing the protection wave recording file to obtain the switching-on position change time, trip position change time, protection trip outlet time and protection reclosing outlet time of each phase of a primary switch of the power system as protection action information.
In the embodiment of the invention, the protection wave recording file comprises information such as fault current vanishing time, switching-on position change time of each phase of the primary switch, tripping position change time, protection tripping outlet time, protection reclosing outlet time and the like.
In an alternative example, after S120, further comprising:
s150, judging whether a reclosing signal exists in the power system;
and S160, if the reclosing signal does not exist in the power system, judging the action of the reclosing.
In general, the reclosing signal is a signal sent by a facility for automatically reclosing a circuit breaker by a mechanical device or a relay automatic device after the circuit breaker is disconnected due to a certain fault, and marks that the circuit breaker is reclosed. When the fault of the primary switch equipment is transient, the primary switch equipment can be normally reclosed after the fault, so that the primary switch equipment is indicated to run normally, otherwise, the primary switch equipment can be determined after the power system is manually checked.
In an embodiment of the present invention, S130 may include:
if the phase-splitting tripping position signal exists, taking the maximum value of the time difference between the protection tripping outlet moment and the fault current vanishing moment of each phase as the switching-off action duration;
if the split-phase closing position signals exist, the maximum value of the time difference between the closing position change time of each phase and the protection reclosing exit time is taken as the closing action time.
Further comprises:
if the phase-splitting tripping position signal does not exist, the time difference between the protection tripping outlet time and the fault current disappearance time of the power system is taken as the switching-off action duration.
If the split-phase closing position signal does not exist, taking the time difference between the closing position change time of the power system and the protection reclosing exit time as the closing action time.
In an alternative example, S140 may include:
s141, acquiring a preset switching-off timeout period and/or switching-on timeout period;
s142, comparing the opening action time length of the primary switch device with the opening timeout time length;
s143, judging that mechanical performance faults occur when the opening action time is longer than the opening timeout time;
s144, comparing the closing action time length of the primary switch device with the closing timeout time length;
and S145, judging that the mechanical performance fault occurs when the closing action time is longer than the closing timeout time.
Example two
Fig. 2 is a schematic structural diagram of a primary switching device operation diagnosis apparatus according to a second embodiment of the present invention. As shown in fig. 2, the apparatus includes an acquisition module 21, an analysis module 22, a determination module 23, and a judgment module 24, where:
an acquisition module 21, configured to perform acquisition of a protection record file of a protection device action recorded in the power system;
the analysis module 22 is configured to perform analysis on the protection record file to obtain fault current information and protection action information of the primary switching device of the power system;
a determining module 23, configured to determine a switching-off action duration and/or a switching-on action duration of the primary switching device based on the fault current information and the protection action information;
and the judging module 24 is used for judging that the mechanical performance of the primary switch is faulty when the opening action time length and/or the closing action time length of the primary switch device are overtime.
Optionally, the parsing module 22 module includes:
the fault analysis unit is used for executing the analysis of the protection wave recording file to obtain the fault current vanishing moment of the primary switch equipment of the power system as fault current information;
and the action analysis unit is used for analyzing the protection wave recording file to obtain the switching-on position change time, trip position change time, protection trip outlet time and protection reclosing outlet time of each phase of the primary switch of the power system as protection action information.
Further comprises:
the reclosing analysis unit is used for executing judgment on whether a reclosing signal exists in the power system;
and the reclosing judgment unit is used for executing that the reclosing action is not judged if the reclosing signal does not exist in the power system.
Optionally, the determining module 23 includes:
the first switching-off unit is used for executing that if a split-phase tripping position signal exists, the maximum value of the time difference between the protection tripping outlet moment and the fault current vanishing moment of each phase is taken as the switching-off action duration;
and the first switching-on unit is used for executing that if the split-phase switching-on position signal exists, the maximum value of the time difference between the switching-on position change time of each phase and the protection reclosing outlet time is taken as the switching-on action time.
Further comprises:
and the second switching-off unit is used for executing the time difference between the protection tripping outlet time and the fault current disappearance time of the power system as the switching-off action time length if the split-phase tripping position signal does not exist.
Further comprises:
and the second switching-on unit is used for executing the time difference between the switching-on position change time and the protection reclosing exit time of the power system as the switching-on action time if the split-phase switching-on position signal does not exist.
Optionally, the judging module 24 includes:
the acquisition unit is used for executing acquisition of preset switching-off timeout duration and/or switching-on timeout duration;
the first comparison unit is used for comparing the switching-off action time length of the primary switching device with the switching-off timeout time length;
the first judging unit is used for judging that mechanical performance faults occur when the opening action time is longer than the opening timeout time;
the second comparison unit is used for comparing the closing action time length of the primary switch device with the closing timeout time length;
and the second judging unit is used for judging that the mechanical performance fault occurs when the closing action time is longer than the closing timeout time.
The primary switch equipment action diagnosis device provided by the embodiment of the invention can execute the primary switch equipment action diagnosis method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Example III
Fig. 3 shows a schematic diagram of the structure of a one-time switching device motion diagnostic device 10 that may be used to implement an embodiment of the present 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. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. 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. 3, the one-time switching device operation diagnosis device 10 includes at least one processor 11, and a memory such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc. communicatively connected to the at least one processor 11, wherein the memory stores a computer program executable by the at least one processor, and the processor 11 can perform various appropriate operations and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the one-time switching device operation diagnosis device 10 can also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
A plurality of components in the primary switching device action diagnosis device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the one-time switching device action diagnosis device 10 to exchange information/data with other devices through a computer network such as the internet and/or various telecommunication networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 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 11 performs the various methods and processes described above, such as a single switching device action diagnostic method.
In some embodiments, the primary switching device action diagnostic method may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed on the primary switching device action diagnostic device 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the one-time switching device action diagnostic method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the one-time switchgear action diagnostic method by any other suitable means (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may 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), load 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 method for diagnosing a switching device operation, comprising:
acquiring a protective wave recording file of the action of a protective device recorded in the electric power system;
analyzing the protection wave recording file to obtain fault current information and protection action information of primary switch equipment of the power system;
determining the opening action duration and/or closing action duration of the primary switch equipment based on the fault current information and the protection action information;
and judging that the mechanical performance of the primary switch fails when the opening action time and/or the closing action time of the primary switch device are overtime.
2. The primary switching device operation diagnosis method according to claim 1, wherein the analyzing the protection record file to obtain fault current information and protection operation information of the primary switching device of the power system includes:
analyzing the protection wave recording file to obtain the fault current vanishing moment of primary switch equipment of the power system as fault current information;
analyzing the protection wave recording file to obtain the switching-on position change time, trip position change time, protection trip outlet time and protection reclosing outlet time of each phase of a primary switch of the power system as protection action information.
3. The primary switching device operation diagnosis method according to claim 1, further comprising, after the analyzing the protection log file to obtain fault current information and protection operation information of the primary switching device of the power system:
judging whether a reclosing signal exists in the power system or not;
and if the reclosing signal does not exist in the power system, judging the action of the switch.
4. The primary switching device operation diagnosis method according to claim 1, wherein the determining a switching-off operation duration and/or a switching-on operation duration of the primary switching device based on the fault current information and the protection operation information includes:
if the phase-splitting tripping position signal exists, taking the maximum value of the time difference between the protection tripping outlet moment and the fault current vanishing moment of each phase as the switching-off action duration;
if the split-phase closing position signals exist, the maximum value of the time difference between the closing position change time of each phase and the protection reclosing exit time is taken as the closing action time.
5. The method according to claim 4, wherein after setting a maximum value of a time difference between a protection trip outlet time and a fault current extinction time of each phase as a switching-off operation time period if the split-phase trip position signal is present, the method further comprises:
and if the split-phase tripping position signal does not exist, taking the time difference between the protection tripping outlet time and the fault current disappearance time of the power system as the switching-off action duration.
6. The primary switching device operation diagnosis method according to claim 4, further comprising, after the maximum value of the time difference between the closing position change time of each phase and the protection reclosing exit time is set as the closing operation time period, if the split-phase closing position signal is present:
and if the split-phase closing position signal does not exist, taking the time difference between the closing position change time and the protection reclosing exit time of the power system as closing action time.
7. The primary switch device action diagnosis method according to claim 1, wherein the judging that the primary switch has a mechanical performance failure when the opening action duration and/or the closing action duration of the primary switch device are timed out comprises:
acquiring a preset switching-off timeout period and/or switching-on timeout period;
comparing the opening action time length of the primary switch device with the opening timeout time length;
when the opening action time is longer than the opening timeout time, judging that mechanical performance faults occur;
comparing the closing action time length of the primary switch device with the closing timeout time length;
and judging that the mechanical performance fault occurs when the closing action time is longer than the closing timeout time.
8. A primary switching device operation diagnosis apparatus, comprising:
the acquisition module is used for executing and acquiring a protective wave recording file of the action of the protective device recorded in the power system;
the analysis module is used for executing the analysis of the protection wave recording file to obtain fault current information and protection action information of primary switch equipment of the power system;
the determining module is used for determining the opening action duration and/or closing action duration of the primary switch equipment based on the fault current information and the protection action information;
and the judging module is used for judging that the mechanical performance fault occurs to the primary switch when the opening action time length and/or the closing action time length of the primary switch device are overtime.
9. A primary switching device action diagnostic device, the 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 one-time switching device action diagnostic method of any one of claims 1-7.
10. A computer readable storage medium storing computer instructions for causing a processor to perform the primary switching device action diagnostic method of any one of claims 1-7.
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| CN202310036490.XA CN116298840A (en) | 2023-01-10 | 2023-01-10 | Primary switch equipment action diagnosis method, device, equipment and storage medium |
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| CN202310036490.XA CN116298840A (en) | 2023-01-10 | 2023-01-10 | Primary switch equipment action diagnosis method, device, equipment and storage medium |
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