Grounding system fault line selection method and system

Abstract

The invention is suitable for the technical field of fault line selection, and particularly relates to a grounding system fault line selection method and system, and the method comprises the steps: S100, delimiting the application range of a grounding system, numbering lines in the application range through employing a preset numbering rule, and carrying out the numbering of the lines in the application range through employing a pre-installed zero-sequence current transformer, collecting electrical parameters of the line in the use range, wherein the electrical parameters at least comprise zero-sequence current and zero-sequence voltage; and S200, creating a multi-level hash table, splitting the multi-level hash table into a partition layer and a monitoring layer, and defining the serial number of the line as a key. By constructing the multi-level hash table, real-time monitoring of the grounding system can be realized, the fault position can be quickly positioned, and the control equipment can be adjusted according to the disposal scheme at the first time after the fault occurs through partitioning, so that the fault handling process is greatly optimized, and the stability of the grounding system is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fault line selection, and in particular to a method and system for fault line selection in a grounding system. Background Art

[0002] A grounding system fault refers to an accidental electrical connection between a part of the equipment or conductor and the earth or grounding device in the power system, which is usually called a "ground fault" or "ground short circuit". This fault may be caused by insulation damage, equipment aging, external damage or environmental factors (such as lightning strikes, moisture); when a grounding fault occurs, the current will flow to the earth through an abnormal path, which may cause serious consequences such as equipment damage, fire, electric shock hazards, etc. Grounding faults not only affect the normal operation of the power system, but may also cause large-scale power outages and equipment losses.

[0003] When a grounding system fault occurs, the zero-sequence current can be used to select the fault line. For a single-phase grounding fault, the zero-sequence current on the fault line is generally greater than that on the normal line. In other words, the fault location can be determined by comparing the zero-sequence currents of each line. Therefore, "how to use the zero-sequence current to monitor the grounding system in real time" is the technical problem that the present invention needs to solve. Summary of the invention

[0004] The object of the present invention is to provide a method and system for fault line selection in a grounding system to solve the problem of "how to use zero-sequence current to monitor the grounding system in real time" raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A method for selecting a fault line in a grounding system, the method comprising:

[0007] S100: Delimiting the use scope of the grounding system, numbering the lines within the use scope using a pre-established numbering rule, and collecting electrical parameters of the lines within the use scope using a pre-installed zero-sequence current transformer, wherein the electrical parameters at least include: zero-sequence current and zero-sequence voltage;

[0008] S200: creating a multi-level hash table, and splitting the multi-level hash table into a partition layer and a monitoring layer, defining the line number as a key, defining the electrical parameter corresponding to the line as a value, using a preset hash function, configuring a mapping between the key and the value, integrating the key, the value and the mapping, generating a hash table, and synchronizing the hash table to the monitoring layer;

[0009] S300: Establishing a communication link between the monitoring layer and the zero-sequence current transformer, and updating the hash table using the collected electrical parameters;

[0010] S400: Divide the usage range into a plurality of partitions, establish a one-to-one correspondence between the partitions and the hash table, divide a sub-topology diagram of each partition, and mark a control device, wherein the control device at least includes: a circuit breaker and a fuse, open the control authority of the control device to the monitoring layer, and establish a data channel between the partition layer and the monitoring layer;

[0011] S500: In the monitoring layer, after traversing the faulty line, a preset treatment plan is initiated to adjust the control device via the data channel.

[0012] Furthermore, the S100 includes:

[0013] Draw a general topology diagram of the power system and dynamically define the scope of use of the grounding system based on line changes in the power system;

[0014] In the general topology diagram, the priorities of the lines are marked, and lines of different priorities are numbered differently. According to the numbering results, the processing order of the lines is determined.

[0015] Furthermore, the S100 includes:

[0016] Selecting an installation position of a zero-sequence current transformer from the general topology diagram, and collecting electrical parameters at the installation position;

[0017] The electrical parameters of two adjacent installation positions are compared to locate the fault position, generate a label, and insert the label into the monitoring layer.

[0018] Further, the S200 includes:

[0019] Marking the number into the partition layer;

[0020] The key is hashed using the hash function to obtain a hash number, the hash number is used to determine the storage location of the electrical parameter in the monitoring layer, the electrical parameter at the storage location is defined as a value, and a mapping between the key and the value is configured.

[0021] Further, the S300 includes:

[0022] Introducing a real-time data stream processing framework into the monitoring layer, receiving the real-time data stream transmitted from the zero-sequence current transformer, and calculating the electrical parameters;

[0023] The installation position of the zero-sequence current transformer is located, and the number of the line at the installation position is found.

[0024] Further, the S400 includes:

[0025] A hash table corresponding to each partition is established, and a sub-topology map of each partition is determined. The changed electrical parameters are compared using the real-time data stream and defined as incremental values.

[0026] The hash table and the sub-topology map are updated using the incremental value.

[0027] Furthermore, the S400 includes:

[0028] A hash table corresponding to each partition is established, and a sub-topology map of each partition is determined. The changed electrical parameters are compared using the real-time data stream and defined as incremental values.

[0029] The hash table and the sub-topology map are updated using the incremental value.

[0030] Furthermore, the system comprises:

[0031] The acquisition module is used to define the use scope of the grounding system, number the lines within the use scope using a pre-established numbering rule, and collect electrical parameters of the lines within the use scope using a pre-installed zero-sequence current transformer, wherein the electrical parameters at least include: zero-sequence current and zero-sequence voltage;

[0032] A synchronization module, for creating a multi-level hash table, and splitting the multi-level hash table into a partition layer and a monitoring layer, defining the line number as a key, defining the electrical parameter corresponding to the line as a value, using a preset hash function, configuring a mapping between the key and the value, integrating the key, the value and the mapping, generating a hash table, and synchronizing the hash table to the monitoring layer;

[0033] An updating module, used to establish a communication link between the monitoring layer and the zero-sequence current transformer, and to update the hash table using the collected electrical parameters;

[0034] Establishing a module, used to divide the usage range into several partitions, establish a one-to-one correspondence between the partitions and the hash table, divide the sub-topology map of each partition, and mark the control device, wherein the control device at least includes: a circuit breaker and a fuse, open the control authority of the control device to the monitoring layer, and establish a data channel between the partition layer and the monitoring layer;

[0035] The adjustment module is used to start a preset treatment plan after traversing the faulty line in the monitoring layer, and adjust the control device through the data channel.

[0036] Furthermore, the acquisition module includes:

[0037] A drawing unit, used for drawing a general topology diagram of the power system, and dynamically defining the use scope of the grounding system based on line changes in the power system;

[0038] A numbering unit, used to mark the priority of the line in the general topology diagram, perform differential numbering on the lines of different priorities, and determine the processing order of the lines according to the numbering results;

[0039] A selection unit, configured to select an installation position of a zero-sequence current transformer from the general topology diagram, and collect electrical parameters at the installation position;

[0040] The comparison unit is used to compare the electrical parameters of two adjacent installation positions, locate the fault position, generate a label, and insert the label into the monitoring layer.

[0041] Furthermore, the synchronization module includes:

[0042] A marking unit, used for marking the number into the partition layer;

[0043] A mapping unit is used to use the hash function to hash the key to obtain a hash number, use the hash number to determine the storage location of the electrical parameter in the monitoring layer, define the electrical parameter at the storage location as a value, and configure the mapping between the key and the value.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] By numbering the lines within the scope of use, the fault location can be quickly located and better safety management can be performed. By collecting electrical parameters, the grounding system fault can be detected and located, greatly improving the safety of the grounding system. By building a multi-level hash table, the grounding system can be monitored in real time and the fault location can be quickly located. Through partitioning, the control equipment can be adjusted according to the disposal plan as soon as possible after the fault occurs, which greatly simplifies the fault handling process and further improves the stability of the grounding system. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 A flowchart of a method for selecting a fault line in a grounding system provided by an embodiment of the present invention;

[0047] Figure 2 A first sub-flow chart of the method for selecting a fault line in a grounding system provided by an embodiment of the present invention;

[0048] Figure 3 A second sub-flow chart of the method for selecting a fault line in a grounding system provided by an embodiment of the present invention;

[0049] Figure 4A third sub-flow chart of the method for selecting a fault line in a grounding system provided by an embodiment of the present invention;

[0050] Figure 5 A fourth sub-flow chart of the method for selecting a fault line in a grounding system provided by an embodiment of the present invention;

[0051] Figure 6 A fifth sub-flow chart of the method for selecting a fault line in a grounding system provided by an embodiment of the present invention;

[0052] Figure 7 A block diagram of the composition of the grounding system fault line selection system provided by an embodiment of the present invention;

[0053] Figure 8 A block diagram of the composition of a collection module in a grounding system fault line selection system provided by an embodiment of the present invention;

[0054] Fig. 9 A block diagram of the composition of a synchronization module in a grounding system fault line selection system provided by an embodiment of the present invention;

[0055] Fig.10 A block diagram of the composition of an update module in a grounding system fault line selection system provided by an embodiment of the present invention;

[0056] Fig.11 A block diagram of the composition of the establishment module in the grounding system fault line selection system provided by the embodiment of the present invention;

[0057] Fig.12 A block diagram of the composition of an adjustment module in a grounding system fault line selection system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0059] In Example 1, Figure 1 The implementation process of the method for selecting a fault line in a grounding system provided by an embodiment of the present invention is shown and described in detail below:

[0060] S100: Delineate the use scope of the grounding system, number the lines within the use scope using a pre-established numbering rule, and collect electrical parameters of the lines within the use scope using a pre-installed zero-sequence current transformer, wherein the electrical parameters include at least: zero-sequence current and zero-sequence voltage.

[0061] Determine the scope of use of the grounding system, and use the pre-established numbering rules to number the lines in the grounding system. The specific numbering rules should be established in advance by the staff. Use zero-sequence current transformers to collect the electrical parameters of the lines within the scope of use. The zero-sequence current transformers are generally installed at the inlet and outlet of the grounding system, grounding points, and the outlet terminals of distribution transformers. The electrical parameters include: zero-sequence current and zero-sequence voltage.

[0062] S200: Create a multi-level hash table, and split the multi-level hash table into a partition layer and a monitoring layer, define the line number as a key, and define the electrical parameter corresponding to the line as a value, use a preset hash function to configure a mapping between keys and values, integrate the keys, values ​​and mappings, generate a hash table, and synchronize the hash table to the monitoring layer.

[0063] The multi-level hash table consists of a partition layer and a monitoring layer. In the monitoring layer, the line number is used as the key and the electrical parameter is used as the value. A hash function is selected to establish a mapping between the key and the value. The hash function should be pre-determined by the staff.

[0064] Hash the line number to get the hash number. When the zero-sequence current transformer collects the electrical parameters, the electrical parameters are stored in the position corresponding to the hash number in the monitoring layer, and the mapping between the key and the value is configured to integrate and generate a hash table, which is synchronized to the monitoring layer.

[0065] S300: Establishing a communication link between the monitoring layer and the zero-sequence current transformer, and updating the hash table using the collected electrical parameters.

[0066] A communication link is established between the monitoring layer and the zero-sequence current transformer. Through this communication link, the collected electrical parameters are classified into the monitoring layer.

[0067] S400: Divide the usage scope into several partitions, establish a one-to-one correspondence between the partitions and the hash table, divide the sub-topology diagram of each partition, and mark the control device, wherein the control device at least includes: a circuit breaker and a fuse, open the control authority of the control device to the monitoring layer, and establish a data channel between the partition layer and the monitoring layer.

[0068] The usage range is divided into several partitions, and a hash table is created for each partition. At the same time, the sub-topology map of each partition is determined, and the control devices are marked in the sub-topology map. The control devices include: circuit breakers and fuses, etc. The control authority of the control devices is opened to the monitoring layer, and a data channel is established between the monitoring layer and each partition.

[0069] S500: In the monitoring layer, after traversing the faulty line, a preset treatment plan is initiated to adjust the control device via the data channel.

[0070] In the monitoring layer, the faulty lines are traversed and the preset treatment plan is activated. The treatment plan is prepared in advance by the staff. The monitoring layer adjusts the control equipment through the data channel according to the treatment plan.

[0071] In Example 2, Figure 2 The implementation process of the method for selecting a fault line in a grounding system provided by an embodiment of the present invention is shown. S100 is described in detail below:

[0072] S101: Draw a general topology diagram of the power system, and dynamically define the use scope of the grounding system based on line changes in the power system.

[0073] Draw the overall topology diagram of the power system within the scope of use, and dynamically adjust the scope of use according to changes in the power system lines.

[0074] S102: In the general topology diagram, marking the priorities of the lines, numbering the lines of different priorities differently, and determining the processing order of the lines according to the numbering results.

[0075] Mark the priority of each line, where the priority is used to characterize the importance of the line. According to the different priorities, the lines are numbered differently, and the order of handling each line is determined; for example, the lines are divided into trunk lines and branch lines, and are numbered differently. If the faulty line is a trunk line, it should be handled quickly. If it is a branch line, it can be handled according to the situation.

[0076] In Example 3, Figure 2 The implementation process of the method for selecting a fault line in a grounding system provided by an embodiment of the present invention is shown. S100 is described in detail below:

[0077] S103: Selecting an installation position of a zero-sequence current transformer from the general topology diagram, and collecting electrical parameters at the installation position.

[0078] In the general topology diagram, find out the installation location of the zero-sequence current transformer and collect the electrical parameters at the installation location; the installation location should be the inlet and outlet of the grounding system, the grounding point and the outlet terminal of the distribution transformer, etc.

[0079] S104: Compare the electrical parameters of two adjacent installation positions, locate the fault position, generate a label, and insert the label into the monitoring layer.

[0080] By collecting data from multiple zero-sequence current transformers and recording the zero-sequence current measured on each zero-sequence current transformer, the difference between the current components is used to determine the location of the fault, and a tag with the fault location is inserted into the monitoring layer.

[0081] In Example 4, Figure 3 The implementation process of the method for selecting a fault line in a grounding system provided by an embodiment of the present invention is shown. S200 is described in detail below:

[0082] S201: Mark the number into the partition layer.

[0083] The number of each line is marked in the partition layer. By constructing the partition layer, the structure of the grounding system can be intuitively represented, and by cooperating with the monitoring layer, the fault position can be quickly located.

[0084] S202: Using the hash function, hashing the key to obtain a hash number, using the hash number to determine the storage location of the electrical parameter in the monitoring layer, defining the electrical parameter at the storage location as a value, and configuring a mapping between the key and the value.

[0085] The key is hashed to determine the hash number. The hash number is used to determine the storage location of the corresponding electrical parameters. The electrical parameters are defined as values, and a mapping between keys and values ​​is configured. By configuring the mapping, the electrical parameters corresponding to the line can be quickly found, greatly shortening the fault location process.

[0086] In Example 5, Figure 4 The implementation process of the method for selecting a fault line in a grounding system provided by an embodiment of the present invention is shown. S300 is described in detail below:

[0087] S301: Introduce a real-time data stream processing framework into the monitoring layer, receive the real-time data stream transmitted from the zero-sequence current transformer, and calculate electrical parameters.

[0088] A real-time data stream processing framework is introduced into the monitoring layer, and the electrical parameters of the line are calculated using the real-time data stream.

[0089] S302: Locate the installation position of the zero-sequence current transformer, and find out the number of the line at the installation position.

[0090] Find out the installation location of the zero-sequence current transformer and determine the corresponding line number.

[0091] In Example 6, Figure 5 The implementation process of the method for selecting a fault line in a grounding system provided by an embodiment of the present invention is shown. S400 is described in detail below:

[0092] S401: Establish a hash table corresponding to the partitions one by one, and determine the sub-topology map of each partition, use the real-time data stream to compare the changed electrical parameters, and define them as incremental values.

[0093] A hash table is created for each partition, and a sub-topology map of each partition is determined. The hash table is mainly used to determine the fault location, and the sub-topology map is mainly used to provide decision support for fault location. Real-time data streams are used to compare electrical parameters that have undergone drastic changes and define them as incremental values, which are used to verify the fault location.

[0094] S402: Using the increment value, update the hash table and the sub-topology map.

[0095] The hash table and sub-topology map are updated using the incremental value.

[0096] In Example 7, Figure 6 The implementation process of the method for selecting a fault line in a grounding system provided by an embodiment of the present invention is shown. S500 is described in detail below:

[0097] S501: embedding a line selection mechanism into the hash table, marking the processing scheme into a sub-topology map, and adjusting the control device.

[0098] A line selection mechanism is embedded in the hash table, where the line selection mechanism is: in a three-phase power system, the sum of the currents of each phase is zero during normal operation; however, when a ground fault occurs, the current balance is destroyed and a zero-sequence current is generated. The zero-sequence current varies depending on the fault location. By measuring the zero-sequence current at different locations in the grounding system and analyzing the differences in current components of each zero-sequence current transformer, the location of the fault can be determined.

[0099] Determine the treatment plan after the line failure, mark the treatment plan on the sub-topology map, and use the treatment plan to adjust the control equipment.

[0100] S502: Fill the line selection result of the line selection mechanism into a preset template, and send it to a preset terminal.

[0101] The line selection result is filled into a preset template, wherein the line selection location includes the fault location and the corresponding line, etc. The preset template is prepared in advance by the staff, and the completed template is sent to the preset terminal, wherein the preset terminal can be a grounding system maintenance terminal.

[0102] Figure 7 The structure block diagram of the grounding system fault line selection system provided by an embodiment of the present invention is shown. The grounding system fault line selection system 1 includes:

[0103] The acquisition module 11 is used to define the use scope of the grounding system, number the lines within the use scope using a pre-established numbering rule, and collect electrical parameters of the lines within the use scope using a pre-installed zero-sequence current transformer, wherein the electrical parameters at least include: zero-sequence current and zero-sequence voltage;

[0104] A synchronization module 12 is used to create a multi-level hash table, and split the multi-level hash table into a partition layer and a monitoring layer, define the line number as a key, define the electrical parameter corresponding to the line as a value, use a preset hash function to configure a mapping between the key and the value, integrate the key, value and mapping, generate a hash table, and synchronize the hash table to the monitoring layer;

[0105] An updating module 13 is used to establish a communication link between the monitoring layer and the zero-sequence current transformer, and to update the hash table using the collected electrical parameters;

[0106] Establishing module 14, used to divide the usage range into several partitions, establish a one-to-one correspondence between the partitions and the hash table, divide the sub-topology map of each partition, and mark the control device, wherein the control device at least includes: a circuit breaker and a fuse, open the control authority of the control device to the monitoring layer, and establish a data channel between the partition layer and the monitoring layer;

[0107] The adjustment module 15 is used to start a preset treatment plan after traversing the faulty line in the monitoring layer, and adjust the control device through the data channel.

[0108] Figure 8 The structure block diagram of the grounding system fault line selection system provided by the embodiment of the present invention is shown, and the acquisition module 11 includes:

[0109] A drawing unit 111 is used to draw a general topology diagram of the power system and dynamically define the use scope of the grounding system based on line changes in the power system;

[0110] A numbering unit 112 is used to mark the priority of the line in the general topology map, perform differential numbering on the lines of different priorities, and determine the processing order of the lines according to the numbering results;

[0111] A selection unit 113 is used to select an installation position of a zero-sequence current transformer from the general topology diagram, and collect electrical parameters at the installation position;

[0112] The comparison unit 114 is used to compare the electrical parameters of two adjacent installation locations, locate the fault location, and generate a label, and insert the label into the monitoring layer.

[0113] Fig. 9 The structure block diagram of the grounding system fault line selection system provided by the embodiment of the present invention is shown, and the synchronization module 12 includes:

[0114] A marking unit 121, used for marking the number into the partition layer;

[0115] The mapping unit 122 is used to use the hash function to hash the key to obtain a hash number, use the hash number to determine the storage location of the electrical parameter in the monitoring layer, define the electrical parameter at the storage location as a value, and configure the mapping between the key and the value.

[0116] Fig.10 The structure block diagram of the grounding system fault line selection system provided by the embodiment of the present invention is shown, and the updating module 13 includes:

[0117] The receiving unit 131 is used to receive the real-time data stream transmitted from the zero-sequence current transformer by using the real-time data stream processing framework introduced in the monitoring layer, and calculate the electrical parameters;

[0118] The search unit 132 is used to locate the installation position of the zero-sequence current transformer and find out the number of the line at the installation position.

[0119] Fig.11 The structure block diagram of the grounding system fault line selection system provided by the embodiment of the present invention is shown, and the establishment module 14 includes:

[0120] The definition unit 141 is used to establish a hash table corresponding to the partitions one by one, and determine the sub-topology map of each partition, using the real-time data stream to compare the changed electrical parameters and define them as incremental values,

[0121] The updating unit 142 is used to update the hash table and the sub-topology map using the incremental value.

[0122] Fig.12 The structure block diagram of the grounding system fault line selection system provided by the embodiment of the present invention is shown, and the adjustment module 15 includes:

[0123] An embedding unit 151 is used to embed a line selection mechanism into the hash table, mark the disposal scheme into the sub-topology map, and adjust the control device;

[0124] The sending unit 152 is used to fill the line selection result of the line selection mechanism into a preset template and send it to a preset terminal.

[0125] The acquisition module 11 is mainly used to complete step S100, the synchronization module 12 is mainly used to complete step S200, the update module 13 is mainly used to complete step S300, the establishment module 14 is mainly used to complete step S400, and the adjustment module 15 is mainly used to complete step S500;

[0126] The drawing unit 111 is mainly used to complete step S101, the numbering unit 112 is mainly used to complete step S102, the selecting unit 113 is mainly used to complete step S103, and the comparing unit 114 is mainly used to complete step S104;

[0127] The marking unit 121 is mainly used to complete step S201, and the mapping unit 122 is mainly used to complete step S202;

[0128] The receiving unit 131 is mainly used to complete step S301, and the searching unit 132 is mainly used to complete step S302;

[0129] The definition unit 141 is mainly used to complete step S401, and the update unit 142 is mainly used to complete step S402;

[0130] The embedding unit 151 is mainly used to complete step S501, and the sending unit 152 is mainly used to complete step S502.

[0131] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0132] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0133] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for selecting a fault line in a grounding system, characterized in that: The method comprises: S100: Delimiting the use scope of the grounding system, numbering the lines within the use scope using a pre-established numbering rule, and collecting electrical parameters of the lines within the use scope using a pre-installed zero-sequence current transformer, wherein the electrical parameters at least include: zero-sequence current and zero-sequence voltage; S200: creating a multi-level hash table, and splitting the multi-level hash table into a partition layer and a monitoring layer, defining the line number as a key, defining the electrical parameter corresponding to the line as a value, using a preset hash function, configuring a mapping between the key and the value, integrating the key, the value and the mapping, generating a hash table, and synchronizing the hash table to the monitoring layer; S300: Establishing a communication link between the monitoring layer and the zero-sequence current transformer, and updating the hash table using the collected electrical parameters; S400: Divide the usage range into a plurality of partitions, establish a one-to-one correspondence between the partitions and the hash table, divide a sub-topology diagram of each partition, and mark a control device, wherein the control device at least includes: a circuit breaker and a fuse, open the control authority of the control device to the monitoring layer, and establish a data channel between the partition layer and the monitoring layer; S500: In the monitoring layer, after traversing the faulty line, a preset treatment plan is initiated to adjust the control device via the data channel.

2. The method for selecting a fault line in a grounding system according to claim 1, characterized in that: The S100 includes: Draw a general topology diagram of the power system and dynamically define the scope of use of the grounding system based on line changes in the power system; In the general topology diagram, the priorities of the lines are marked, and lines of different priorities are numbered differently. According to the numbering results, the processing order of the lines is determined.

3. The method for selecting a fault line in a grounding system according to claim 2, characterized in that: The S100 includes: Selecting the installation position of the zero-sequence current transformer from the general topology diagram, and collecting electrical parameters at the installation position; The electrical parameters of two adjacent installation positions are compared to locate the fault position, generate a label, and insert the label into the monitoring layer.

4. The method for selecting a fault line in a grounding system according to claim 1, characterized in that: The S200 includes: Marking the number into the partition layer; The key is hashed using the hash function to obtain a hash number, the hash number is used to determine the storage location of the electrical parameter in the monitoring layer, the electrical parameter at the storage location is defined as a value, and a mapping between the key and the value is configured.

5. The method for selecting a fault line in a grounding system according to claim 4, characterized in that: The S300 includes: Introducing a real-time data stream processing framework into the monitoring layer, receiving the real-time data stream transmitted from the zero-sequence current transformer, and calculating the electrical parameters; The installation position of the zero-sequence current transformer is located, and the number of the line at the installation position is found.

6. The method for selecting a fault line in a grounding system according to claim 5, characterized in that: The S400 includes: A hash table corresponding to each partition is established, and a sub-topology diagram of each partition is determined. The changed electrical parameters are compared using the real-time data stream and defined as incremental values. The hash table and the sub-topology map are updated using the incremental value.

7. The method for selecting a fault line in a grounding system according to claim 6, characterized in that: The S500 further includes: Embed the line selection mechanism into the hash table, mark the disposal scheme into the sub-topology map, and adjust the control device; The line selection result of the line selection mechanism is filled into a preset template and sent to a preset terminal.

8. A grounding system fault line selection system, characterized in that: The system comprises: The acquisition module is used to define the use scope of the grounding system, number the lines within the use scope using a pre-established numbering rule, and collect electrical parameters of the lines within the use scope using a pre-installed zero-sequence current transformer, wherein the electrical parameters at least include: zero-sequence current and zero-sequence voltage; A synchronization module, for creating a multi-level hash table, and splitting the multi-level hash table into a partition layer and a monitoring layer, defining the line number as a key, defining the electrical parameter corresponding to the line as a value, using a preset hash function, configuring a mapping between the key and the value, integrating the key, the value and the mapping, generating a hash table, and synchronizing the hash table to the monitoring layer; An updating module, used to establish a communication link between the monitoring layer and the zero-sequence current transformer, and to update the hash table using the collected electrical parameters; Establishing a module, used to divide the usage range into several partitions, establish a one-to-one correspondence between the partitions and the hash table, divide the sub-topology map of each partition, and mark the control device, wherein the control device at least includes: a circuit breaker and a fuse, open the control authority of the control device to the monitoring layer, and establish a data channel between the partition layer and the monitoring layer; The adjustment module is used to start a preset treatment plan after traversing the faulty line in the monitoring layer, and adjust the control device through the data channel.

9. The grounding system fault line selection system according to claim 8, wherein the acquisition module comprises: A drawing unit, used for drawing a general topology diagram of the power system, and dynamically defining the use scope of the grounding system based on line changes in the power system; A numbering unit, used to mark the priority of the line in the general topology diagram, perform differential numbering on the lines of different priorities, and determine the processing order of the lines according to the numbering results; A selection unit, configured to select an installation position of a zero-sequence current transformer from the general topology diagram, and collect electrical parameters at the installation position; The comparison unit is used to compare the electrical parameters of two adjacent installation positions, locate the fault position, generate a label, and insert the label into the monitoring layer.

10. The grounding system fault line selection system according to claim 9, wherein the synchronization module comprises: A marking unit, used for marking the number into the partition layer; A mapping unit is used to use the hash function to hash the key to obtain a hash number, use the hash number to determine the storage location of the electrical parameter in the monitoring layer, define the electrical parameter at the storage location as a value, and configure the mapping between the key and the value.

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