CN115267431B - A ring network fault detection method, device, electronic equipment and storage medium - Google Patents
A ring network fault detection method, device, electronic 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
- G01R31/08—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
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- 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
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- 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
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Abstract
本发明公开了一种环网故障检测系统、方法、电子设备和存储介质，环网故障检测系统用于检测第一交流系统和第二交流系统中是否存在环网故障，包括主机、与主机通信的从机，主机在第一交流系统的线路中的第一漏电流不为0时向从机发送电流获取指令，从机在接收到电流获取指令时，将在第二交流系统的线路中采集的第二漏电流发送到主机，主机还用于判断同一时刻的第一漏电流和第二漏电流的矢量和是否为0，若是，确定第一交流系统和第二交流系统之间存在环网故障。不需要人工在两个交流系统中来回测量漏电流，故障排查效率高，便于及时维修环网故障。并且，两个交流系统的漏电流是在同一时刻采集的，可以提高故障检测准确性。
The present invention discloses a ring network fault detection system, method, electronic device and storage medium. The ring network fault detection system is used to detect whether there is a ring network fault in a first AC system and a second AC system, and includes a host and a slave communicating with the host. When the first leakage current in the line of the first AC system is not 0, the host sends a current acquisition instruction to the slave. When the slave receives the current acquisition instruction, it sends the second leakage current collected in the line of the second AC system to the host. The host is also used to determine whether the vector sum of the first leakage current and the second leakage current at the same time is 0. If so, it is determined that there is a ring network fault between the first AC system and the second AC system. There is no need to manually measure the leakage current back and forth in the two AC systems, the fault troubleshooting efficiency is high, and it is convenient to repair the ring network fault in time. In addition, the leakage currents of the two AC systems are collected at the same time, which can improve the accuracy of fault detection.
Description
Technical Field
The present invention relates to the field of power grid maintenance technologies, and in particular, to a ring network fault detection system, a ring network fault detection method, an electronic device, and a storage medium.
Background
The loop network fault of the alternating current system refers to the fact that two sets of feeder lines of the independent running alternating current system are connected in error, so that loop network currents exist in the two sets of alternating current systems. The fault of the ring network causes the three-phase current of the two-section system to be unbalanced, and accidents such as short circuit, protection misoperation and the like can be caused when the fault is serious, so that the operation of the system is influenced.
At present, a protection device is generally adopted to cut off fault current, but the fault current is a protection mode which can not cure the root cause of the fault, and when personnel in a station are used for checking the ring network fault, leakage current can only be respectively measured back and forth in two sets of alternating current systems through a current transformer to check, 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 overhauling 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, which are used for solving the problems of low looped network fault detection efficiency and easiness in misjudgment of an alternating current system.
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, where the ring network fault detection system includes a host and a slave that communicates with the host;
the host is used for collecting a 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;
the slave is used for sending a second leakage current acquired in a line of the second alternating current system to the host when receiving the current acquisition instruction;
The host is further configured to determine whether a vector sum of the first leakage current and the second leakage current at the same time is 0, and if yes, determine that a ring network fault exists between the first ac system and the second ac system.
In a second aspect, the present invention provides a ring network fault detection method, which is applied to the host according to the first aspect, where the host communicates with the slave, and includes:
collecting a first leakage current from a line of a first alternating current system, and sending a current acquisition instruction to the slave when the first leakage current is not 0; the slave is used for sending a second leakage current acquired in a line of a second alternating current system to the host when receiving the current acquisition 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;
if yes, 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, including:
At least one processor, and
A memory communicatively coupled to the at least one processor, wherein,
The memory stores a computer program executable by the at least one processor to enable the at least one processor to perform 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, where computer instructions are stored, where the computer instructions are configured to cause a processor to execute the ring network fault detection method according to the second aspect of the present invention.
The ring network fault detection system is used for detecting whether ring network faults exist in a first alternating current system and a second alternating current system or not, and comprises a host and a slave computer communicated with the host, wherein the host is used for collecting first leakage current from a circuit of the first alternating current system, sending a current obtaining instruction to the slave computer when the first leakage current is not 0, and sending second leakage current collected from a circuit of the second alternating current system to the host computer when the slave computer receives the current obtaining instruction, and the host is also used for judging whether vector sum of the first leakage current and the second leakage current at the same moment is 0 or not, and if yes, determining that the ring network faults exist between the first alternating current system and the second alternating current system. When the first leakage current is not 0, the host can obtain the second leakage current at the same moment by sending a current acquisition instruction to the slave, when the vector sum of the first leakage current and the second leakage current is 0, the ring network fault between the first alternating current system and the second alternating current system can be determined, the leakage current is not required to be measured manually in the two alternating current systems, the fault checking efficiency is high, the speed is high, and the ring network fault can be maintained by workers in time. In addition, leakage currents of the two alternating current systems are collected at the same time, whether ring network faults exist or not can be accurately judged, and fault detection accuracy is improved.
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 schematic diagram of ring network fault line detection according to a first embodiment of the present invention;
fig. 2 is a block diagram of a ring network fault detection system according to a first embodiment of the present invention;
FIG. 3 is a schematic view of a sensor according to a first 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 that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
Example 1
As shown in fig. 1, the first system includes three phases A1, B1, C1 and N1, the first system includes three phases A2, B2, C2 and N2, and after the m point corresponding to the feeder 1 of the first ac system and the N point corresponding to the feeder 2 of the second ac system are connected, a ring network fault occurs, and due to the voltage difference of the ac systems, a voltage um is formed between the m and N points, and a ring network current is, that is, a leakage current, is formed by forming a loop by the neutral point grounding points of the two-section system. At the same time, the leakage current i1 of the point a and the leakage current i2 of the point b are equal in size and opposite in direction, and the vector sum of the leakage current i1 of the point a and the leakage current i2 of the point b is 0, namely i1+i2=0.
Fig. 2 is a block diagram of a ring network fault detection system according to a first embodiment of the present invention, where the embodiment is applicable to a case of detecting ring network faults 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 in communication with the master 1.
The host is used for collecting a first leakage current from a line of the first alternating current system, and sending a current obtaining instruction to the slave when the first leakage current is not 0.
When the leakage current exists in the first alternating current system, the leakage current can be caused by ring network faults between the first alternating current system and the second alternating current system, or can be caused by line damp, insulation damage and the like, at the moment, the host sends a current acquisition instruction to the slave to acquire the leakage current in the second alternating current system, and further, whether the leakage current with the same size and opposite directions exists in the second alternating current system can be confirmed.
The slave is used for sending the second leakage current acquired in the line of the second alternating current system to the master when receiving the current acquisition instruction.
The master and the slave can collect leakage current of a fixed collection point on a system line in the same and preset collection period, and the fixed collection point can be a point on a bus or a feed 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 monitor the leakage current in the first alternating current system only without monitoring the leakage current in the first alternating current system and the second alternating current system at the same time, and system resources can be saved. The secondary machine firstly collects and stores the second leakage current in the second alternating current system, and when receiving a current acquisition instruction sent by the host machine, the secondary machine sends the collected second leakage current to the host machine, so that the storage data volume in the host machine can be reduced, and the storage space is saved for the host machine. When the slave sends the second leakage current to the host, the slave may send a plurality of second leakage currents collected in a last preset time period to the host. Note 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 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 so, determining that the 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 currents may be multiple, and the second leakage currents collected at the same time as the first leakage currents in the determined 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 are the same in size and opposite in direction, which indicates that a ring network fault exists between the first alternating current system 0 and the second alternating current system.
The ring network fault detection system is used for detecting whether ring network faults exist in a first alternating current system and a second alternating current system or not, and comprises a host and a slave computer communicated with the host, wherein the host is used for collecting first leakage current from a circuit of the first alternating current system, sending a current obtaining instruction to the slave computer when the first leakage current is not 0, and the slave computer is used for collecting second leakage current from a circuit of the second alternating current system and sending the second leakage current to the host when the current obtaining instruction is received, and the host is further used for judging whether vector sum of the first leakage current and the second leakage current at the same moment is 0 or not, and if yes, determining that the ring network faults exist between the first alternating current system and the second alternating current system. When the first leakage current is not 0, the host can obtain the second leakage current at the same moment by sending a current acquisition instruction to the slave, when the vector sum of the first leakage current and the second leakage current is 0, the ring network fault between the first alternating current system and the second alternating current system can be determined, the leakage current is not required to be measured manually in the two alternating current systems, the fault checking efficiency is high, the speed is high, and the ring network fault can be maintained by workers in time. In addition, leakage currents of the two alternating current systems are collected at the same time, whether ring network faults exist or not can be accurately judged, and 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 of a line of the first alternating current system to generate a current. As shown in fig. 3, the sensor is an open-type current transformer, and includes a circular magnetic core 111, on which an openable and closable clamping interface 112 is provided, and after the clamping interface 112 is opened, three phase lines and N lines in the first ac system can be clamped. When the line of the first ac system passes through the center of the magnetic core 111, the sensor senses the magnetic field formed by the line of the first ac system to generate a current Ict. Wherein the lines comprise ABC three-phase lines and N lines (not shown) of feeder lines or buses, and currents flowing in the ABC three-phase lines are Ia, ib and Ic respectively.
The sampling module is used for collecting the current generated by the sensor so as 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, then the current is converted into an analog signal which can be identified by the main control module, namely, the current is converted into a first leakage current signal, namely, the leakage current is detected in the embodiment, and the acquired current is the leakage current signal.
The main control module is used for converting the first leakage current signal into 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 machine also includes the same sensor and sampling module as the host machine, and because the module function and the operation principle are the same, the embodiment only describes the sensor and the sampling module in the host machine in detail, and the sensor and the sampling module in the slave machine can be correspondingly referred to without repeated description.
In an alternative embodiment of the present invention, as shown in fig. 2, the host 1 further includes a first pair of time modules 13 connected to the master module 10, and the slave includes a slave module and a second pair of time modules connected to the slave module.
The first time setting module and the second time setting module are both used for receiving satellite signals and adjusting time according to the satellite signals so that time errors between the first alternating current system and the second alternating current system are smaller than a preset error threshold.
The satellite signals comprise time signals, and the first time setting module and the second time setting module can set the time of the system according to the time signals so as to ensure the time synchronization of the first alternating current system and the second alternating current system, so that the time errors acquired by the two systems at the same time can be reduced as much as possible, and the time errors of the first leakage current and the second leakage current acquired respectively due to the time errors among the systems are avoided. In addition, after the time setting is completed, the host computer can also acquire the instant time of the slave computer and compare the instant time with the instant time of the host computer so as to confirm the host computer to enable the time error between the first alternating current system and the second alternating current system to be 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. The slave control module is used for sending the second leakage current acquired at the acquisition time to the master control module when receiving the current acquisition instruction.
The secondary machine collects more second leakage current data in advance, and when receiving a current acquisition instruction sent by the main control module, if all collected second leakage current data are sent to the main control module, the secondary machine has the defects of low transmission speed and more occupied resources. When the main 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 is acquired from the slave control module of the slave, so that the main control module can add the acquisition time of the first leakage current into a current acquisition instruction, the slave control module screens out the second leakage current at the same time as the first leakage current according to the acquisition time, and on the basis of acquiring the required second leakage current, the calculation resource and the storage resource of the host are saved, and the transmission speed is prevented from being slow due to mass data transmission.
In an alternative embodiment of the present invention, the slave is further configured to send a second acquisition point corresponding to the second leakage current to the master when receiving the current acquisition command.
The host comprises an acquisition point recording module, an acquisition point updating module, a fourth current acquisition instruction sending module, a current data acquisition module and a fault point confirmation module.
The acquisition point recording module is used for receiving the second acquisition point sent by the slave machine when confirming that the ring network fault exists, and recording the first acquisition point in the first communication system and the second acquisition point in the second communication system.
The acquisition point updating module is used for taking a line which is between the feed line end and the first acquisition point in the first alternating current system and is at a preset distance from the first acquisition point as a first line segment, and taking a line which is between the feed line end and the second acquisition point in the second alternating current system and is at a preset distance from the second acquisition point as a second line segment. For example, as shown in fig. 1, the feeder end is the end where the feeder 1 and the feeder 2 are located, the first collection point is set to be the point a, the second collection point is set to be the point b, in the first ac system, the line between the feeder end and the first collection point a and the preset distance from the first collection point a is the line between ac points, i.e. the first line segment, and in the second ac system, the line between the feeder end and the second collection point b and the preset distance from the second collection point b is the line between bd points, i.e. the second line segment. When the fault points are m and n respectively, leakage current can be detected in the am line segment and the bn line segment, and leakage current can also be detected at the points c and d, 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 from a first acquisition point in the first alternating current system and acquiring the third leakage currents from the first line segment in a preset step length, and receiving the fourth leakage currents sent by the slave. The position of the fault point where the ring network fault occurs is not determined, so that 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, the slave machine acquires a plurality of fourth leakage currents from the second line segment by the preset step length from the second acquisition point.
And the fault point confirming module is used for determining the positions of fault points where the looped network faults occur 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 used for extracting a third leakage current which is measured for the last time and is not 0 from the third leakage currents as a target third leakage current, and extracting a fourth leakage current which is measured for the last time and is not 0 from the fourth leakage currents as a target fourth leakage current.
The fault point determining unit is used for determining that the fault point in the first alternating current system is located between the power 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 located between the power 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 the e point and the f point which are close to the feeder line end, and if the e point and the f point are obvious that no leakage current exists, the fault point is located between the ce line segments and between the df line segments. Gradually narrowing the measuring range, the position of the fault point can be accurately measured.
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 also used for sending the first leakage current, the second leakage current and the acquisition time to the display module, and the display module is used for displaying the first leakage current, the second leakage current and the acquisition time. The display module is mainly used for man-machine interaction so that a worker can check detection data conveniently.
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 ring network fault is determined to exist, and the alarm module is used for sending an alarm when the alarm instruction is received. For example, the alarm module may be a honey device, a warning light, etc.
Example two
Fig. 4 is a flowchart of a ring network fault detection method provided by a second embodiment of the present invention, where the embodiment of the present invention can be applied to detect ring network faults in a first ac system and a second ac system, and can be applied to a host according to 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 communicates with the slave, as shown in fig. 4, where the ring network fault detection method includes:
S401, collecting a first leakage current from a line of a first alternating current system, and sending a current acquisition instruction to a slave machine when the first leakage current is not 0.
The slave is used for sending the second leakage current acquired in the line of the second alternating current system to the host when receiving the current acquisition instruction;
S402, receiving a second leakage current sent by the slave;
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 executing S401.
S404, determining that a ring network fault exists between the first alternating current system and the second alternating current system.
In an alternative embodiment of the present invention, the collecting the first leakage current from the line of the 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 type current transformer;
collecting the current generated by the sensor to obtain a first leakage current signal;
the first leakage current signal is converted into the first leakage current.
In an alternative embodiment of the present invention, before the collecting the first leakage current from the line of the first ac system, the method further includes:
And receiving satellite signals and adjusting time according to the satellite signals.
The sending a current acquisition instruction to the slave when the first leakage current is not 0 includes:
And when the slave control module receives the current acquisition instruction, the slave control module is also used for transmitting a second leakage current acquired at the acquisition time to the master control module.
In an optional embodiment of the present invention, the slave is further configured to send a second acquisition point corresponding to the second leakage current to the host when receiving the current acquisition instruction, and the ring network fault detection method further includes:
recording a first acquisition point in the first alternating current system and a second acquisition point in the second alternating current system when the existence of the ring network fault is confirmed;
Taking a line which is between the feed line end and a first acquisition point in the first alternating current system and is at a preset distance from the first acquisition point as a first line segment, and taking a line which is between the feed line end and a second acquisition point in the second alternating current system and is at a preset distance 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 acquisition point in a preset step length from the first line segment, and receiving the fourth leakage currents sent by the slave;
And determining the positions of fault points where ring network faults occur 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 for the last time and is not 0 from the third leakage currents as a target third leakage current, and extracting a fourth leakage current which is measured for the last time and is not 0 from the fourth leakage currents as a target fourth leakage current;
And determining that the fault point in the first alternating current system is positioned between the feed-back 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 positioned between the feed-back end 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:
Transmitting 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 first embodiment, so that the ring network fault detection system has corresponding beneficial effects. It should be noted that, for the method embodiment, since it is substantially similar to the system embodiment, the description is relatively simple, and the relevant points refer to the part of the description of the system embodiment.
Example III
Fig. 5 shows a schematic diagram of an electronic device 40 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. 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. 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, etc., in which the memory stores a computer program executable by the at least one processor, and the processor 41 may perform various suitable actions and processes according to the computer program stored in the Read Only Memory (ROM) 42 or the computer program loaded from the storage unit 48 into the Random Access Memory (RAM) 43. In the RAM 43, various programs and data required for the operation of the electronic device 40 may also be stored. The processor 41, the ROM 42 and the RAM 43 are connected to each other via a bus 44. An input/output (I/O) interface 45 is also connected to bus 44.
Various components in the electronic device 40 are connected to the I/O interface 45, including an input unit 46, such as a keyboard, mouse, etc., an output unit 47, such as various types of displays, speakers, etc., a storage unit 48, such as a magnetic disk, optical disk, etc., and a communication unit 49, such as a network card, modem, wireless communication transceiver, etc. The communication unit 49 allows the electronic device 40 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 41 may be various general and/or special purpose processing components with processing and computing capabilities. Some examples of processor 41 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 41 performs the various methods and processes described above, such as the ring network failure detection method.
In some embodiments, the ring network failure detection method may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as the storage unit 48. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 40 via the ROM 42 and/or the communication unit 49. When the computer program is loaded into RAM 43 and executed by processor 41, one or more steps of the ring network fault detection method described above may be performed. Alternatively, in other embodiments, processor 41 may be configured to perform the ring network failure detection method in any other suitable manner (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 being 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 a special or general purpose programmable processor, operable to receive data and instructions from, and to 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 the user and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the 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 a Local Area Network (LAN), a Wide Area Network (WAN), a blockchain network, 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 (7)
1. The ring network fault detection system is characterized by being used for detecting whether ring network faults exist in a first alternating current system and a second alternating current system or not and comprising a host computer and a slave computer communicated with the host computer;
the host is used for collecting a 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;
the slave is used for sending a second leakage current acquired in a line of the second alternating current system to the host when receiving the current acquisition instruction;
The host is further configured to determine whether a vector sum of the first leakage current and the second leakage current at the same time is 0, and if yes, determine that a ring network fault exists between the first ac system and the second ac system;
The host comprises a sensor, a sampling module and a main control module which are connected in sequence,
The sensor is an open type current transformer and is used for inducing a magnetic field of a circuit 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;
the host also comprises a main control module and a first time setting module connected with the main control module, the slave comprises a slave control module and a second time setting module connected with the slave control module,
The first time setting module and the second time setting module are both used for receiving satellite signals and adjusting time according to the satellite signals;
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;
The secondary control module is used for sending the second leakage current acquired at the acquisition time to the main control module when receiving the current acquisition instruction;
The slave is further configured to send a second acquisition point corresponding to the second leakage current to the master when receiving the current acquisition instruction;
the host computer includes:
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 ring network fault is confirmed to exist;
the acquisition point updating module is used for taking a line which is between the feed line end and the first acquisition point in the first alternating current system and is at a preset distance from the first acquisition point as a first line segment, and taking a line which is between the feed line end and the second acquisition point in the second alternating current system and is at a preset distance 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 leakage currents in the second line segment;
The current data acquisition module is used for acquiring a plurality of third leakage currents from the first acquisition point and the first line segment in a preset step length, and receiving the fourth leakage currents sent by the slave machine;
And the fault point confirming module is used for determining the positions of fault points where the looped network faults occur in the first alternating current system and the second alternating current system according to the third leakage current and the fourth leakage current.
2. The ring network failure detection system of claim 1, wherein the failure point validation module comprises:
A leakage current extracting unit, configured to extract, from a plurality of third leakage currents, a third leakage current that is not 0 and is measured last as a target third leakage current, and extract, from a plurality of fourth leakage currents, a fourth leakage current that is not 0 and is measured last as a target fourth leakage current;
The fault point determining unit is used for determining that the fault point in the first alternating current system is located between the feed-line 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 located between the feed-line end and the acquisition point corresponding to the target fourth leakage current.
3. The ring network failure detection system of any of claims 1-2, wherein the host further comprises a main control module, a display module coupled to 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.
4. The ring network failure detection system of any of claims 1-2, wherein the host further comprises a master control module, an alarm module coupled to the master control module,
The main control module is also used for sending an alarm instruction to the alarm module when the ring network fault is determined to exist;
And the alarm module is used for sending out an alarm when receiving the alarm instruction.
5. A method for detecting a ring network fault, applied to the host according to any one of claims 1to 4, wherein the host communicates with a slave, and includes:
collecting a first leakage current from a line of a first alternating current system, and sending a current acquisition instruction to the slave when the first leakage current is not 0; the slave is used for sending a second leakage current acquired in a line of a second alternating current system to the host when receiving the current acquisition 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;
if yes, determining that a ring network fault exists between the first alternating current system and the second alternating current system.
6. An electronic device, the electronic device comprising:
At least one processor, and
A memory communicatively coupled to the at least one processor, wherein,
The memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the ring network failure detection method of claim 5.
7. A computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, the computer instructions are configured to cause a processor to implement the ring network failure detection method of claim 5 when executed.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101777796A (en) * | 2010-01-15 | 2010-07-14 | 合肥工业大学 | Distributed Fault Recording Device of Power System Based on DSP |
| CN113608065A (en) * | 2021-07-02 | 2021-11-05 | 中国电力科学研究院有限公司 | Multi-direct-current system ring network fault monitoring device and method |
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| CN114325470A (en) * | 2021-12-14 | 2022-04-12 | 广西电网有限责任公司北海供电局 | Alternating current double-loop common-zero-line leakage current online monitoring circuit and system |
| CN114624627A (en) * | 2022-02-25 | 2022-06-14 | 广州市仟顺电子设备有限公司 | Method, system and device for detecting earth fault of alternating current cable and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101777796A (en) * | 2010-01-15 | 2010-07-14 | 合肥工业大学 | Distributed Fault Recording Device of Power System Based on DSP |
| CN113608065A (en) * | 2021-07-02 | 2021-11-05 | 中国电力科学研究院有限公司 | Multi-direct-current system ring network fault monitoring device and method |
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