CN115267431A - Loop network fault detection method and device, electronic equipment and storage medium - Google Patents
Loop network fault detection method and device, electronic equipment and storage medium Download PDFInfo
- Publication number
- CN115267431A CN115267431A CN202210876088.8A CN202210876088A CN115267431A CN 115267431 A CN115267431 A CN 115267431A CN 202210876088 A CN202210876088 A CN 202210876088A CN 115267431 A CN115267431 A CN 115267431A
- Authority
- CN
- China
- Prior art keywords
- leakage current
- current
- alternating current
- slave
- acquisition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Small-Scale Networks (AREA)
Abstract
The invention discloses a looped network fault detection system, a looped network fault detection method, electronic equipment and a storage medium, wherein the looped network fault detection system is used for detecting whether looped network faults exist in a first alternating current system and a second alternating current system and comprises a host and a slave communicated with the host, the host sends a current acquisition instruction to the slave when first leakage current in a circuit of the first alternating current system is not 0, the slave sends second leakage current acquired in the circuit of the second alternating current system to the host when receiving the current acquisition instruction, the host is also used for judging whether the vector sum of the first leakage current and the second leakage current at the same moment is 0, and if yes, the looped network faults exist between the first alternating current system and the second alternating current system. The leakage current is not required to be manually measured back and forth in the two alternating current systems, the troubleshooting efficiency is high, and the looped network fault can be maintained in time. In addition, the leakage currents of the two alternating current systems are collected at the same time, so that the fault detection accuracy can be improved.
Description
Technical Field
The invention relates to the technical field of power grid maintenance, in particular to a looped network fault detection system, a looped network fault detection method, electronic equipment and a storage medium.
Background
The looped network fault of the alternating current system means that feeder lines of two sets of independent operation alternating current systems are connected in error, so that looped network current exists in the two sets of alternating current systems. The looped network fault causes the three-phase current of two sections of systems to be unbalanced, and the serious accidents cause short circuit, protection misoperation and the like, thereby influencing the system operation.
At present, a protection device is usually adopted to remove fault current, but the protection mode is a temporary solution and non-permanent solution, and when personnel in a station check a looped network fault, leakage current can only be measured back and forth in two sets of alternating current systems through a current transformer to check the fault, so that the checking efficiency is low, the voltage of the alternating current systems is changed at any time, the measured leakage current is also changed, and the judgment of the maintenance personnel on the fault is easily influenced.
Disclosure of Invention
The invention provides a looped network fault detection system, a looped network fault detection method, electronic equipment and a storage medium, and aims to solve the problems that looped network fault troubleshooting efficiency of an alternating current system is low and misjudgment is easy to occur.
In a first aspect, the present invention provides a ring network fault detection system, configured to detect whether a ring network fault exists in a first ac system and a second ac system, including a host and a slave in communication with the host;
the main machine is used for collecting first leakage current from a circuit of the first alternating current system and sending a current acquisition instruction to the slave machine when the first leakage current is not 0;
the slave is used for sending second leakage current collected in a line of the second alternating current system to the host when receiving the current obtaining instruction;
the host is further used for judging whether the vector sum of the first leakage current and the second leakage current at the same moment is 0, and if yes, determining that a ring network fault exists between the first alternating current system and the second alternating current system.
In a second aspect, the present invention provides a method for detecting a ring network fault, which is applied to the master according to the first aspect, where the master is in communication with a slave, and the method includes:
collecting first leakage current from a line of a first alternating current system, and sending a current acquisition instruction to the slave machine when the first leakage current is not 0; the slave is used for sending second leakage current collected in a line of a second alternating current system to the host when receiving the current obtaining instruction;
receiving the second leakage current sent by the slave;
judging whether the vector sum of the first leakage current and the second leakage current at the same moment is 0 or not;
and if so, determining that a ring network fault exists between the first alternating current system and the second alternating current system.
In a third aspect, the present invention provides an electronic device, comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the ring network fault detection method according to the second aspect of the present invention.
In a fourth aspect, the present invention provides a computer-readable storage medium, which stores computer instructions for causing a processor to implement the ring network fault detection method according to the second aspect of the present invention when executed.
The looped network fault detection system is used for detecting whether looped network faults exist in a first alternating current system and a second alternating current system, and comprises a host and a slave communicated with the host, wherein the host is used for collecting first leakage current from a line of the first alternating current system and sending a current acquisition instruction to the slave when the first leakage current is not 0, and the slave is used for sending second leakage current collected from the line of the second alternating current system to the host when receiving the current acquisition instruction; the host is further used for judging whether the vector sum of the first leakage current and the second leakage current at the same moment is 0, and if yes, determining that a ring network fault exists between the first alternating current system and the second alternating current system. When the first leakage current is not 0, the host can obtain a second leakage current at the same moment by sending a current acquisition command to the slave, when the vector sum of the first leakage current and the second leakage current is 0, the looped network fault between the first alternating current system and the second alternating current system can be determined, the leakage current does not need to be measured back and forth in the two alternating current systems manually, the fault troubleshooting efficiency is high, the speed is high, and the looped network fault can be maintained by a worker in time. And the leakage currents of the two alternating current systems are collected at the same time, so that whether the looped network fault exists can be accurately judged, and the fault detection accuracy is improved.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of detecting a faulty line in a ring network according to an embodiment of the present invention;
fig. 2 is a block diagram of a ring network fault detection system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a sensor structure according to an embodiment of the present invention;
fig. 4 is a flowchart of a ring network fault detection method according to a second embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device according to a third embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1, the first system includes three phase lines A1, B1, and C1 and a line N1, the first system includes three phase lines A2, B2, and C2 and a line N2, and when m points of the feeder line 1 of the first ac system and N points of the feeder line 2 of the second ac system are connected, a ring network fault occurs, and due to a voltage difference of the ac systems, a voltage Umn is formed between the m and N points, and a loop is formed by connecting a neutral point of the two systems to a ground point, and a ring network current is, that is, a leakage current is formed at the same time. At the same time, the leakage current i1 at the point a and the leakage current i2 at the point b are equal in magnitude and opposite in direction, and the vector sum of the two is 0, i.e., i1+ i2=0.
Fig. 2 is a block diagram of a ring network fault detection system according to an embodiment of the present invention, which is applicable to a case of detecting a ring network fault of two sets of ac systems. As shown in fig. 2, the ring network fault detection system includes a master 1 and a slave 2 communicating with the master 1.
The host is used for collecting first leakage current from a circuit of the first alternating current system and sending a current obtaining instruction to the slave when the first leakage current is not 0.
When leakage current exists in the first alternating current system, the leakage current may be caused by a looped network fault between the first alternating current system and the second alternating current system, or may be caused only by damp lines, insulation damage and the like, at this time, the master sends a current obtaining instruction to the slave to obtain the leakage current in the second alternating current system, and further, whether the leakage current with the same magnitude and the opposite direction exists in the second alternating current system can be confirmed.
The slave is used for sending second leakage current collected in a line of the second alternating current system to the host when receiving the current obtaining instruction.
The host and the slave can acquire the leakage current of a fixed acquisition point on a system line in the same preset acquisition period, and the fixed acquisition point can be a point on a bus or a feeder line. When the ring network fault occurs, leakage current is generated in the first alternating current system and the second alternating current system, so that the host can only monitor the leakage current in the first alternating current system, the leakage current in the first alternating current system and the leakage current in the second alternating current system are not monitored at the same time, and system resources can be saved. The slave computer firstly collects and stores the second leakage current in the second alternating current system, and then sends the collected second leakage current to the host computer when receiving the current acquisition command sent by the host computer, so that the data storage amount in the host computer can be reduced, and the storage space is saved for the host computer. When the slave sends the second leakage current to the host, the plurality of second leakage currents collected in the latest preset time period may be sent to the host. It should be noted that the communication between the master and the slave may be wireless communication or wired communication, which is not limited in this embodiment.
The host is further used for judging whether the vector sum of the first leakage current and the second leakage current at the same moment is 0, and if yes, determining that a ring network fault exists between the first alternating current system and the second alternating current system.
When the host receives the second leakage current, the number of the second leakage current may be multiple, and the second leakage current collected at the same time as the determined first leakage current in the first alternating current system can be screened out.
The vector sum of the first leakage current and the second leakage current is 0, namely the first leakage current and the second leakage current have the same magnitude and opposite directions, which indicates that a looped network fault exists between the first alternating current system 0 and the second alternating current system.
The looped network fault detection system is used for detecting whether looped network faults exist in a first alternating current system and a second alternating current system, and comprises a host and a slave communicated with the host, wherein the host is used for collecting first leakage current from a line of the first alternating current system and sending a current acquisition instruction to the slave when the first leakage current is not 0, and the slave is used for collecting second leakage current from a line of the second alternating current system and sending the second leakage current to the host when receiving the current acquisition instruction; the host is further used for judging whether the vector sum of the first leakage current and the second leakage current at the same moment is 0, and if yes, determining that a ring network fault exists between the first alternating current system and the second alternating current system. When the first leakage current is not 0, the host can obtain a second leakage current at the same moment by sending a current obtaining instruction to the slave, when the vector sum of the first leakage current and the second leakage current is 0, the looped network fault between the first alternating current system and the second alternating current system can be determined, the leakage current does not need to be measured back and forth in the two alternating current systems manually, the troubleshooting efficiency is high, the troubleshooting speed is high, and a worker can repair the looped network fault in time conveniently. And the leakage currents of the two alternating current systems are collected at the same time, so that whether the looped network fault exists can be accurately judged, and the fault detection accuracy is improved.
In an alternative embodiment of the present invention, as shown in fig. 2, the host 1 includes a sensor 11, a sampling module 12 and a main control module 10 connected in sequence,
the sensor is used for inducing a magnetic field generating current of a line of the first alternating current system. As shown in fig. 3, the sensor is an open type current transformer, and includes an annular magnetic core 111, a card interface 112 that can be opened and closed is provided on the magnetic core, and after the card interface 112 is opened, three phase lines and N lines in the first ac system can be clamped in. When the line of the first ac system passes through the center of the magnetic core 111, the sensor induces a magnetic field formed by the line of the first ac system to generate a current Ict. The lines comprise ABC three-phase lines of a feeder line or a bus and N lines (not shown), and currents respectively flowing in the ABC three-phase lines are Ia, ib and Ic.
And the sampling module is used for collecting the current generated by the sensor to obtain a first leakage current signal and sending the first leakage current signal to the main control module. As shown in fig. 3, the sampling module 12 is connected to the sensor 11. The data acquisition end of the sampling module is connected with the output end of the sensor, the sampling module can acquire the current output by the output end of the sensor, and then the current is converted into an analog signal which can be identified by the main control module, namely, the analog signal is converted into a first leakage current signal, namely, the leakage current is detected in the embodiment, and the acquired current is the signal of the leakage current.
The main control module is used for converting the first leakage current signal into a first leakage current. The main control module comprises an A/D converter which can be used for converting an analog signal into a digital signal, namely, converting a first leakage current signal into a first leakage current, and further determining the size and the direction of the detected leakage current.
It should be noted that the slave also includes a sensor and a sampling module that are the same as the master, and since the module functions and the operation principle are the same, this embodiment only describes the sensor and the sampling module in the master in detail, and the sensor and the sampling module in the slave may be referred to correspondingly without repeated description.
In an alternative embodiment of the present invention, as shown in fig. 2, the master 1 further includes a first time-alignment module 13 connected to the master control module 10, and the slave includes a slave control module and a second time-alignment module connected to the slave control module.
The first time alignment module and the second time alignment module are used for receiving satellite signals and adjusting time according to the satellite signals, so that a time error between the first alternating current system and the second alternating current system is smaller than a preset error threshold value.
The satellite signals comprise time signals, the first time alignment module and the second time alignment module can set system time according to the time signals so as to guarantee time synchronization of the first alternating current system and the second alternating current system, time errors of the two systems collected at the same moment can be reduced as much as possible, and time errors of first leakage current and second leakage current which are collected respectively due to the time errors between the systems are avoided. In addition, after the time setting is completed, the master machine can also obtain the instant time of the slave machine and compare the instant time with the instant time of the master machine to confirm the master machine so that the time error between the first alternating current system and the second alternating current system is smaller than a preset error threshold value, and if the time error is not smaller than the preset error threshold value, the time of the system is further adjusted, wherein the preset error threshold value can be 1ns.
The main control module is used for sending a current acquisition instruction to the slave control module when the first leakage current in the line of the first alternating current system is not 0, wherein the current acquisition instruction comprises acquisition time. And the slave control module is used for sending the second leakage current acquired in the acquisition time to the master control module when receiving the current acquisition instruction.
The slave computer collects more data of the second leakage current in advance, and when a current obtaining instruction sent by the main control module is received, if all the collected data of the second leakage current are sent to the main control module, the slave computer has the defects of low transmission speed and large occupied resource. When the master control module determines that the first leakage current in the first alternating current system is not 0, only the second leakage current at the same time as the first leakage current needs to be acquired from the slave control module of the slave, so that the master control module can add the acquisition time of the first leakage current into the current acquisition instruction, and the slave control module screens the second leakage current at the same time as the first leakage current according to the acquisition time, so that on the basis of acquiring the required second leakage current, computational resources and storage resources of the host are saved, and the slow transmission speed caused by a large amount of data transmission is avoided.
In an optional embodiment of the present invention, the slave is further configured to send a second collection point corresponding to the second leakage current to the master when receiving the current obtaining instruction.
The host comprises a collection point recording module, a collection point updating module, a fourth current collection instruction sending module, a current data acquisition module and a fault point confirming module.
The acquisition point recording module is used for receiving a second acquisition point sent by the slave computer when the looped network fault is confirmed to exist, and recording a first acquisition point in the first alternating current system and a second acquisition point in the second alternating current system.
The acquisition point updating module is used for taking a line which is between a feeder terminal and a first acquisition point in a first alternating current system and is a preset distance away from the first acquisition point as a first line segment, and taking a line which is between the feeder terminal and a second acquisition point in a second alternating current system and is a preset distance away from the second acquisition point as a second line segment. For example, as shown in fig. 1, a feeder end is an end where a feeder 1 and a feeder 2 are located, a first collection point is a point a, and a second collection point is a point b, in a first ac system, a line between the feeder end and the first collection point a and a preset distance away from the first collection point a is a line between ac points, i.e., a first line segment, and in a second ac system, a line between the feeder end and the second collection point b and a preset distance away from the second collection point b is a line between bd points, i.e., a second line segment. When the fault point is m and n respectively, leakage current can be detected in the am line segment and the bn line segment, then leakage current can be detected at the c point and the d point, and ic + id =0.
The fourth current acquisition instruction sending module is used for generating a fourth current acquisition instruction according to the position information of the second line segment and sending the fourth current acquisition instruction to the slave machine so as to control the slave machine to acquire a plurality of fourth currents in the second line segment.
The current data acquisition module is used for acquiring a plurality of third leakage currents acquired from the first acquisition point in the first alternating current system and the first line segment by a preset step length, and receiving a fourth leakage current sent by the slave. Because the position of the fault point where the ring network fault occurs is not determined, a plurality of third leakage currents can be acquired in the first line by adopting a preset step length, and similarly, when the slave machine acquires the fourth current, a plurality of fourth leakage currents are acquired from the second acquisition point and the second line segment by adopting the preset step length.
And the fault point confirming module is used for determining the positions of fault points of looped network faults in the first alternating current system and the second alternating current system according to the third leakage current and the fourth leakage current.
Specifically, the fault point confirming module comprises a leakage current extracting unit and a fault point determining unit.
The leakage current extracting unit is configured to extract a third leakage current, which is not 0 and is measured last time, from the plurality of third leakage currents as a target third leakage current, and extract a fourth leakage current, which is not 0 and is measured last time, from the plurality of fourth leakage currents as a target fourth leakage current.
And the fault point determining unit is used for determining that the fault point in the first alternating current system is between the power supply end and the acquisition point corresponding to the target third leakage current, and determining that the fault point in the second alternating current system is between the power supply end and the acquisition point corresponding to the target fourth leakage current.
On the basis of determining the line segment where the fault point is located, the range where the fault point is located can be further narrowed, as shown in fig. 1, leakage currents can be measured at points e and f which are close to the feeder line end, and if the points e and f are obvious to have no leakage currents, the fault point is located between the ce line segments and between the df line segments. The position of the fault point can be accurately measured by gradually reducing the measurement range.
In an alternative embodiment of the present invention, as shown in fig. 2, the host 1 further includes a display module 14 connected to the main control module 10.
The main control module is further used for sending the first leakage current, the second leakage current and the collection time to the display module, and the display module is used for displaying the first leakage current, the second leakage current and the collection time. The display module is mainly used for man-machine interaction, so that workers can conveniently check detection data.
In an alternative embodiment of the present invention, as shown in fig. 2, the host 1 further includes an alarm module 15 connected to the main control module 10.
The main control module is also used for sending an alarm instruction to the alarm module when the looped network fault is determined to exist, and the alarm module is used for sending an alarm when receiving the alarm instruction. For example, the alarm module can be a honey device, a warning light and the like.
Example two
Fig. 4 is a flowchart of a ring network fault detection method provided in the second embodiment of the present invention, where the second embodiment of the present invention is applicable to detecting a ring network fault in a first ac system and a second ac system, and is applicable to a host as described in the first embodiment, where the host is connected to the first ac system, a slave is connected to the second ac system, and the host is in communication with the slave, as shown in fig. 4, the ring network fault detection method includes:
s401, collecting first leakage current from a line of the first alternating current system, and sending a current obtaining instruction to the slave machine when the first leakage current is not 0.
The slave is used for sending second leakage current collected in a line of a second alternating current system to the host when receiving the current obtaining instruction;
s402, receiving a second leakage current sent by a slave;
and S403, judging whether the vector sum of the first leakage current and the second leakage current at the same moment is 0, if so, executing S404, and if not, returning to execute S401.
S404, determining that a looped network fault exists between the first alternating current system and the second alternating current system.
In an optional embodiment of the present invention, the collecting a first leakage current from a line of a first ac system includes:
inducing a magnetic field of a line of the first alternating current system to generate current through a sensor, wherein the sensor is an open-ended current transformer;
collecting current generated by the sensor to obtain a first leakage current signal;
and converting the first leakage current signal into the first leakage current.
In an optional embodiment of the present invention, before the collecting the first leakage current from the line of the first ac system, the method further includes:
receiving satellite signals and adjusting time according to the satellite signals.
The sending a current obtaining instruction to the slave machine when the first leakage current is not 0 includes:
when a first leakage current in a line of the first alternating current system is not 0, sending a current acquisition instruction to the slave control module, wherein the current acquisition instruction comprises acquisition time; and the slave control module is also used for sending the second leakage current acquired in the acquisition time to the master control module when receiving the current acquisition instruction.
In an optional embodiment of the present invention, the slave is further configured to send a second collection point corresponding to the second leakage current to the master when receiving the current obtaining instruction, and the ring network fault detection method further includes:
when the looped network fault exists, recording a first acquisition point in the first communication system and a second acquisition point in the second communication system;
taking a line which is between a feeder terminal and a first acquisition point in the first alternating current system and is a preset distance away from the first acquisition point as a first line segment, and taking a line which is between the feeder terminal and a second acquisition point in the second alternating current system and is a preset distance away from the second acquisition point as a second line segment;
generating a fourth current acquisition instruction according to the position information of the second line segment, and sending the fourth current acquisition instruction to the slave machine so as to control the slave machine to acquire a plurality of fourth currents in the second line segment;
acquiring a plurality of third leakage currents acquired from the first line segment by a preset step length from the first acquisition point, and receiving the fourth leakage currents sent by the slave machine;
and determining the positions of fault points of the looped network faults in the first alternating current system and the second alternating current system according to the third leakage current and the fourth leakage current.
In an optional embodiment of the present invention, the determining, according to the third leakage current and the fourth leakage current, a location of a fault point where a ring network fault occurs in the first ac system and the second ac system includes:
extracting a third leakage current which is measured last and is not 0 from the plurality of third leakage currents as a target third leakage current, and extracting a fourth leakage current which is measured last and is not 0 from the plurality of fourth leakage currents as a target fourth leakage current;
and determining that the fault point in the first alternating current system is located between the feeder terminal and the acquisition point corresponding to the target third leakage current, and determining that the fault point in the second alternating current system is located between the feeder terminal and the acquisition point corresponding to the target fourth leakage current.
In an optional embodiment of the present invention, the ring network fault detection method further includes:
sending the first leakage current, the second leakage current and the acquisition time to the display module; the display module is used for displaying the first leakage current, the second leakage current and the acquisition time.
In an optional embodiment of the present invention, the ring network fault detection method further includes:
and sending an alarm instruction to the alarm module when the ring network fault is determined to exist, wherein the alarm module is used for sending an alarm when receiving the alarm instruction.
The ring network fault detection method of the embodiment can be applied to the ring network fault detection system provided by the embodiment one, so that the ring network fault detection system has corresponding beneficial effects. It should be noted that, as for the method embodiment, since it is basically similar to the system embodiment, the description is relatively simple, and for the relevant points, reference may be made to partial description of the system embodiment.
EXAMPLE III
FIG. 5 illustrates 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 electronic device may also represent various forms of mobile devices, such as personal digital assistants, cellular phones, smart phones, 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. 5, 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, and the like, wherein 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 necessary for the operation of the electronic apparatus 40 can 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.
A number of components in the electronic device 40 are connected to the 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.
In some embodiments, the ring network fault detection method may be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as 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 ring network failure detection method described above may be performed. Alternatively, in other embodiments, processor 41 may be configured to perform the ring network failure detection 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 circuitry, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), system on a 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 that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for implementing the 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 performed. A computer program can execute entirely on a 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. A 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 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) by 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 can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a back-end 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 back-end, 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. A client and server are generally 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 host and VPS service are overcome.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present invention may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired results of the technical solution of the present invention can be achieved.
The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A looped network fault detection system is characterized by being used for detecting whether looped network faults exist in a first alternating current system and a second alternating current system or not, and comprising a host and a slave communicated with the host;
the main machine is used for collecting first leakage current from a circuit of the first alternating current system and sending a current acquisition instruction to the slave machine when the first leakage current is not 0;
the slave is used for sending second leakage current collected in a line of the second alternating current system to the host when receiving the current obtaining instruction;
the host is further used for judging whether the vector sum of the first leakage current and the second leakage current at the same moment is 0, and if yes, determining that a ring network fault exists between the first alternating current system and the second alternating current system.
2. The ring network fault detection system of claim 1, wherein the host includes a sensor, a sampling module and a master control module connected in sequence,
the sensor is an open-type current transformer and is used for inducing a magnetic field of a line of the first alternating current system to generate current;
the sampling module is used for collecting the current generated by the sensor to obtain a first leakage current signal and sending the first leakage current signal to the main control module;
the main control module is used for converting the first leakage current signal into the first leakage current.
3. The ring network fault detection system of claim 1, wherein the master further comprises a master control module, a first time-alignment module connected with the master control module, the slave comprises a slave control module, a second time-alignment module connected with the slave control module,
the first time-alignment module and the second time-alignment module are used for receiving satellite signals and adjusting time according to the satellite signals;
the master control module is used for sending a current acquisition instruction to the slave control module when a first leakage current in a circuit of the first alternating current system is not 0, wherein the current acquisition instruction comprises acquisition time;
and the slave control module is used for sending the second leakage current acquired in the acquisition time to the master control module when receiving the current acquisition instruction.
4. The ring network fault detection system of claim 1,
the slave machine is further configured to send a second collection point corresponding to the second leakage current to the master machine when the current acquisition instruction is received;
the host computer, including:
the acquisition point recording module is used for recording a first acquisition point in the first communication system and a second acquisition point in the second communication system when the looped network fault is confirmed to exist;
the acquisition point updating module is used for taking a line which is between a feeder end and a first acquisition point in the first alternating current system and is a preset distance away from the first acquisition point as a first line segment, and taking a line which is between a feeder end and a second acquisition point in the second alternating current system and is a preset distance away from the second acquisition point as a second line segment;
the fourth current acquisition instruction sending module is used for generating a fourth current acquisition instruction according to the position information of the second line segment and sending the fourth current acquisition instruction to the slave machine so as to control the slave machine to acquire a plurality of fourth currents in the second line segment;
the current data acquisition module is used for acquiring a plurality of third leakage currents acquired from the first line segment by a preset step length from the first acquisition point and receiving the fourth leakage currents sent by the slave;
and the fault point confirming module is used for determining the positions of fault points of looped network faults in the first alternating current system and the second alternating current system according to the third leakage current and the fourth leakage current.
5. The ring network fault detection system of claim 4, wherein the fault point validation module comprises:
a leakage current extraction unit configured to extract a third leakage current, which is not 0 and is measured last time, as a target third leakage current from among the third leakage currents, and extract a fourth leakage current, which is not 0 and is measured last time, as a target fourth leakage current from among the fourth leakage currents;
and the fault point determining unit is used for determining that the fault point in the first alternating current system is positioned between a feeder terminal and an acquisition point corresponding to the target third leakage current, and determining that the fault point in the second alternating current system is positioned between the feeder terminal and an acquisition point corresponding to the target fourth leakage current.
6. The ring network fault detection system as claimed in any one of claims 1-5, wherein the host computer further includes a main control module, a display module connected with the main control module,
the main control module is further configured to send the first leakage current, the second leakage current and the acquisition time to the display module;
the display module is used for displaying the first leakage current, the second leakage current and the acquisition time.
7. The ring network fault detection system as claimed in any one of claims 1-5, wherein said host further comprises a master control module, an alarm module connected to said master control module,
the main control module is also used for sending an alarm instruction to the alarm module when the looped network fault is determined to exist;
and the alarm module is used for giving an alarm when the alarm instruction is received.
8. A method for detecting a ring network fault, applied to a master according to any one of claims 1 to 7, the master communicating with a slave, comprising:
collecting a first leakage current from a line of a first alternating current system, and sending a current acquisition command to the slave machine when the first leakage current is not 0; the slave is used for sending second leakage current collected in a line of a second alternating current system to the host when receiving the current obtaining instruction;
receiving the second leakage current sent by the slave;
judging whether the vector sum of the first leakage current and the second leakage current at the same moment is 0 or not;
and if so, determining that a ring network fault exists between the first alternating current system and the second alternating current system.
9. An electronic device, characterized in that the electronic device comprises:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores a computer program executable by the at least one processor, the computer program being executable by the at least one processor to enable the at least one processor to perform the ring network failure detection method of any one of claims 1-7.
10. A computer readable storage medium, characterized in that the computer readable storage medium stores computer instructions for causing a processor to implement the ring network fault detection method according to any one of claims 1 to 7 when executed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210876088.8A CN115267431A (en) | 2022-07-25 | 2022-07-25 | Loop network fault detection method and device, electronic equipment and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210876088.8A CN115267431A (en) | 2022-07-25 | 2022-07-25 | Loop network fault detection method and device, electronic equipment and storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115267431A true CN115267431A (en) | 2022-11-01 |
Family
ID=83769736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210876088.8A Pending CN115267431A (en) | 2022-07-25 | 2022-07-25 | Loop network fault detection method and device, electronic equipment and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115267431A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117741235A (en) * | 2023-12-18 | 2024-03-22 | 南方电网调峰调频发电有限公司检修试验分公司 | Current signal detection system |
-
2022
- 2022-07-25 CN CN202210876088.8A patent/CN115267431A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117741235A (en) * | 2023-12-18 | 2024-03-22 | 南方电网调峰调频发电有限公司检修试验分公司 | Current signal detection system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Liu et al. | Recent developments of FNET/GridEye—A situational awareness tool for smart grid | |
| CN115396289A (en) | Fault alarm determination method and device, electronic equipment and storage medium | |
| CN113656252B (en) | Fault positioning method, device, electronic equipment and storage medium | |
| CN105067960B (en) | A kind of Distribution Fault Location System and its method based on big data | |
| JP2014054081A (en) | Transformer substation automation system | |
| CN117424224A (en) | Power failure plan balance optimization method, device, equipment and storage medium | |
| CN115267431A (en) | Loop network fault detection method and device, electronic equipment and storage medium | |
| CN115407150A (en) | System, method, meter and medium for determining use condition of protective pressing plate | |
| CN114116288A (en) | Fault processing method, device and computer program product | |
| Pazdcrin et al. | Platform for testing IEC 61850 control systems using real-time simulator | |
| CN112363016A (en) | Fault positioning method and device based on distributed synchronous measurement and storage medium | |
| CN117465500A (en) | Method, device, equipment and storage medium for judging connection correctness of switch machine | |
| Adhikari et al. | Reliability assessment of special protection system at Kolar HVDC station | |
| TWI831043B (en) | Three-terminal power line fault location and correction system and method, and computer readable storage medium | |
| CN116826676A (en) | Method, device and medium for determining tripping fault type of power transmission line | |
| CN116281054A (en) | Power grid fault type determining method, device and equipment | |
| CN117110792A (en) | Method, device, equipment and storage medium for determining fault hidden trouble of terminal equipment | |
| CN117452135A (en) | Line fault identification method, device, electronic equipment and storage medium | |
| CN116125207A (en) | Power failure detection method and device for low-voltage distribution transformer area, electronic equipment and medium | |
| CN115166617A (en) | Fault point identification instrument, fault point identification method, fault point identification device, equipment and medium | |
| CN115963370A (en) | Method and device for monitoring state of power equipment, electronic equipment and storage medium | |
| CN117518065A (en) | Ammeter monitoring system, method, equipment and storage medium | |
| CN116643105A (en) | Equipment fault detection method and device, electronic equipment and storage medium | |
| CN117290688A (en) | Virtual loop verification method and device, electronic equipment and storage medium | |
| CN117092451A (en) | Fault power grid node positioning method, device, equipment and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |