Distributed fault positioning system and method for power transmission and distribution line

Abstract

The invention relates to a distributed fault positioning system and method for a power transmission and distribution line, and the system comprises the power transmission and distribution line, an acquisition unit group, a collection unit, a communication base station, a cloud server, and a data terminal. The acquisition unit group is used for monitoring current, self state parameters and the like of the power transmission and distribution line, the collection unit is used for receiving and sending communication data with the acquisition unit group, the communication base station is used for receiving and sending communication data with the collection unit, and the cloud server is used for communicating with the communication base station and the data terminal. And the data terminal is equipment with a communication function at the user side. According to the scheme, the application range of a line fault positioning system is expanded, including mountainous areas without mobile communication network coverage, a mode of collecting and installing equipment distributed calculation is adopted, the accuracy and efficiency of fault positioning are improved, the line patrol time is saved, the time of line power restoration is shortened, and the reliability of a power supply system is effectively ensured.

Description

Technical Field

[0001] The present invention relates to the field of transmission and distribution line monitoring, and particularly to a distributed fault location system and method for transmission and distribution lines. Background Art

[0002] Transmission and distribution lines are an important part of the smart grid and are widely distributed in urban areas as well as remote and complex terrain in the wild. Due to their long distribution distance and complex terrain and climate environments, when lightning strikes, icing, wire breaks, tower collapses, etc. occur, it takes a long time to detect and locate line faults, seriously affecting the operation and maintenance efficiency and power supply reliability of the power grid. With the construction of the smart grid and technological progress, line fault indicators, as a line fault diagnosis technology, have been widely applied. However, in the current line fault location system, the system composition architecture is that a collection unit is associated with a group of acquisition units (including three phases A, B, and C). After the collection unit obtains the fault oscillograms of the associated acquisition units, it transmits data to the monitoring master station through the mobile communication network, and the master station centrally analyzes the data to complete line fault location. However, this fault location system architecture has certain deficiencies, especially relying on the mobile communication network to transmit data and the data analysis of the central master station. Currently, most of the transmission and distribution lines built in photovoltaic power generation, wind farms and other stations are distributed in vast areas such as mountains far from cities, and there is no signal full coverage of mobile operator mobile communication base stations in this area, so the system cannot be networked. Therefore, the current line fault location system cannot be effectively applied in this environment, and there is an urgent need for a more widely applicable transmission and distribution line fault location system and method.

[0003] In the patent with the authorization announcement number CN114295937A, a distribution network line fault monitoring system is disclosed, including: a line, and an acquisition unit, a collection unit and a master station monitoring platform that are wirelessly connected to each other; a plurality of acquisition units are installed on the line for fault oscillogram recording, and are wirelessly transmitted to the master station monitoring platform through the collection unit, and the monitoring platform performs oscillogram analysis to complete fault location. However, this system cannot be applied to areas covered by GSM / 2G / 3G / 4G mobile communication networks, there is no communication function between collection units, and fault location analysis is only concentrated on the master station monitoring platform, and real-time distributed line fault location cannot be achieved. Summary of the Invention

[0004] The problem to be solved by the present invention is to propose a distributed fault location system and method for transmission and distribution lines that can be applied to areas without mobile communication network signal coverage, do not rely on the monitoring center master station, and have a wider applicability, aiming at the problems that the existing transmission and distribution line fault location system seriously relies on the central master station, the location system cannot operate normally when the master station fails, and it cannot be applied to areas without mobile communication network signal coverage.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A distributed fault location system for power transmission and distribution lines, characterized in that it includes: power transmission and distribution lines, a collection unit group, a concentration unit, a communication base station, a cloud server, and a data terminal, wherein:

[0007] The power transmission and distribution lines are overhead lines or cables for power transmission and distribution.

[0008] The collection unit group (including ABC-phase collection units) is used to monitor the current, field strength parameters, and its own status parameters of the power transmission and distribution lines, including battery voltage, temperature, and Beidou (or GPS) coordinate information, and receive and send wireless communication data within the collection unit group.

[0009] The concentration unit is used to receive and send communication data with the collection unit group, collect environmental temperature, humidity, altitude, air pressure, Beidou (or GPS) coordinate information, calculate and analyze data, locate line faults, and communicate with the communication base station and the data terminal.

[0010] The communication base station is used to receive and send communication data with the concentration unit.

[0011] The cloud server is used to communicate with the communication base station and the data terminal.

[0012] The data terminal is a device with a communication function at the user end, used to receive cloud fault location information or information pushed by the concentration unit.

[0013] The power transmission and distribution lines of the present invention are overhead lines or cables.

[0014] The collection unit group of the present invention monitors the current, field strength parameters, and its own status parameters of the power transmission and distribution lines, receives and sends wireless communication data within the collection unit group, can be associated with multiple concentration units, and multiple collection unit groups are arranged on the power transmission and distribution lines. It includes: a power supply module, an energy storage module, a Beidou (or GPS) module, a communication module, a CPU module, a storage module, and a collection module.

[0015] The power supply module is used to provide converted power for each internal module and can be connected to a solar panel or a CT.

[0016] The energy storage module is used to store and release electric energy and provide power for each internal module.

[0017] The Beidou (or GPS) module is used to obtain the clock and Beidou (or GPS) coordinate information.

[0018] The communication module is used to communicate between the collection units and with the concentration unit.

[0019] The CPU module is used to collect and calculate data.

[0020] The storage module is used to store messages, waveform recording data, and configuration information;

[0021] The acquisition module is used to acquire circuit current and field strength.

[0022] The aggregation unit of the present invention can be associated with multiple acquisition unit groups, and is used to receive and send communication data and time synchronization messages with the acquisition unit groups, acquire ambient temperature and humidity, altitude, air pressure, Beidou (or GPS) coordinate information, calculate and analyze data and locate line faults, communicate with communication base stations and data terminals, and communicate with other aggregation units. It includes: a power module, an energy storage module, a temperature and humidity module, an air pressure module, a Beidou (or GPS) module, an acquisition unit communication module, an aggregation unit interconnection communication module, a satellite communication module, a mobile communication module, a data terminal communication module, a CPU module, a storage module, and a display module.

[0023] The power module is used to provide converted power for each internal module and can be connected to a solar panel or other AC / DC power sources.

[0024] The energy storage module is used to store and release electrical energy and continue to provide power for each internal module after the external power supply loses power.

[0025] The temperature and humidity module is used to acquire ambient temperature and humidity.

[0026] The air pressure module is used to acquire atmospheric pressure.

[0027] The Beidou (or GPS) module is used to obtain the clock, altitude, and Beidou (or GPS) coordinate information.

[0028] The acquisition unit communication module is used to communicate with the acquisition unit groups.

[0029] The aggregation unit interconnection communication module is used to establish a communication link between aggregation units, including wireless or wired methods.

[0030] The satellite communication module is used to send information to satellites or receive data from satellites.

[0031] The mobile communication module is used to send information to mobile communication base stations or receive data from mobile communication base stations.

[0032] The CPU module is used to calculate and analyze the acquired data.

[0033] The storage module is used to store the received messages, waveform recording data, and configuration information.

[0034] The display module is used to display aggregation unit information and alarm information.

[0035] The cloud server of the present invention is used to receive and send satellite and mobile communication network data, and respond to requests from data terminals and send response data.

[0036] The data terminal of the present invention is used to connect to the cloud server and can also be connected to the aggregation unit locally.

[0037] A method for distributed fault location of power transmission and distribution lines, the method comprising the following steps:

[0038] A) A set of acquisition units (including three phases A, B, and C) monitors the power transmission and distribution lines, and real-time wireless interaction and data acquisition are carried out within the set.

[0039] B) The data collected by the set of acquisition units is used to detect whether a fault has occurred in the line through a data processing method.

[0040] C) The aggregation unit obtains the fault status and information of multiple associated sets of acquisition units.

[0041] D) The aggregation unit starts the logical judgment of line fault location, locates the fault, and communicates and transmits the fault location information between the aggregation units.

[0042] E) The aggregation unit communicates with the base station and sends the fault location information to the cloud server.

[0043] F) The aggregation unit and the cloud server finally push the fault location information to the data terminal.

[0044] In the set of acquisition units of the present invention, a wireless communication method is adopted and is ongoing.

[0045] The data processing method of the set of acquisition units in step (B) of the present invention is as follows:

[0046] (1) The collectors in the set of acquisition units continuously collect transient line field strength data and calculate and form data at a periodic time Ts. The collector group continuously collects transient current and calculates and forms transient zero-sequence current data I0 = {I0 1 , …, I0 n}, three-phase zero-sequence current angle data A 0 = {A 01 , …, A 0n}, current phase angle data and current amplitude data

[0047] (2) The set of acquisition units combines the I0 and E data into data The logic for converting data S into a state matrix is as follows: if the element value in row I0 exceeds the set value I0s, the state value at this element is set to 1, otherwise it is set to 0; if the element value in rows Ea / Eb / Ec exceeds the set value Es, the state value at this element is set to 1, otherwise it is set to 0, and the fault state matrix Z is formed by transformation. In the current amplitude data I, if the element value exceeds the set value Is, the state value at this element is set to 1, otherwise it is set to 0, and the fault state matrix Y is formed by transformation. If both Y and Z are non-zero matrices, it is determined that the installation line of each acquisition unit has a fault, otherwise there is no fault.

[0048] The fault location logic judgment method in step (D) of the present invention is as follows:

[0049] (1) The aggregation unit obtains the state matrices Z 1 , …, Z n and A 0 ={A 01 , …, A 0n};

[0050] (2) The aggregation unit judges the logic one of fault location as follows: for the state matrices Z 1 , …, Z n the adjacent matrix elements are calculated by exclusive OR to obtain G x(x+1) state matrix, x ∈ {0, …, n}, if G x(x+1) is not a zero matrix, it is determined that there is a ground fault in the line between the collector groups. The aggregation unit calculates the phase difference of the associated collector groups A 0x -A 0x+1 , x ∈ {0, …, n}, and marks the fault type according to the set angle;

[0051] (3) The aggregation unit judges the logic two of fault location as follows: for the state matrices Y 1 , …, Y n the adjacent matrix elements are calculated by exclusive OR to obtain K x(x+1) state matrix, x ∈ {0, …, n}, if K x(x+1) is not a zero matrix, it is determined that there is a short circuit fault in the line between the collector groups. The aggregation unit calculates the phase difference of the associated collector groups A x -A x+1 , x ∈ {0, …, n}, and marks the fault type according to the set angle.

[0052] The aggregation units of the present invention are interconnected and communicate with each other to form a line tree topology structure.

[0053] After the aggregation unit of the present invention locates the fault, it pushes the fault location information to the cloud server through the communication base station, and the data terminal obtains the fault location information.

[0054] Beneficial effects:

[0055] Compared with the existing line fault location systems and methods, the distribution fault location system and method for transmission and distribution lines provided by the present invention do not rely on a monitoring master station during system operation. The aggregation unit has the information of the line tree topology structure and is capable of distributed edge computing and quickly locating line faults. The system has a satellite communication function. When communicating with satellites, it is applicable to line areas without mobile communication network signal coverage, featuring wide applicability. It can conduct distributed monitoring on transmission and distribution lines and effectively and accurately locate faults, improving the accuracy and efficiency of line fault location, saving the time for line patrol, shortening the time for the line to resume power supply, and effectively ensuring the reliability of the power supply system. Brief Description of the Drawings

[0056] Figure 1 It is a schematic diagram of the distribution fault location system for transmission and distribution lines of the present invention. In the figure: 1. Transmission and distribution line; 2. Acquisition unit group; 3. Aggregation unit; 4. Communication base station; 5. Cloud server; 6. Data terminal.

[0057] Figure 2 It is a flowchart of the distribution fault location method for transmission and distribution lines of the present invention. Detailed Embodiments

[0058] The following further clarifies the present invention in conjunction with the drawings and embodiments. It should be understood that the following detailed embodiments are only used to illustrate the present invention and not to limit the scope of the present invention.

[0059] Embodiment 1: As Figure 1 shown, in a distribution fault location system for transmission and distribution lines of this embodiment, a distribution fault location system for transmission and distribution lines, the location system includes: a transmission and distribution line, an acquisition unit group, an aggregation unit, a satellite, a cloud server, and a data terminal, where:

[0060] The transmission and distribution line is an overhead power transmission and distribution line or a cable.

[0061] The acquisition unit group is used to monitor the current, field strength parameters, and its own status parameters of the transmission and distribution line, including battery voltage, temperature, and Beidou (or GPS) coordinate information, and receive and send wireless communication data within the acquisition unit group.

[0062] The aggregation unit is used to receive and send communication data and time reporting messages with the acquisition unit group, collect environmental temperature and humidity, altitude, air pressure, Beidou (or GPS) coordinates, calculate and analyze the recorded wave data, and locate line faults, and communicate with the communication base station.

[0063] The satellite is used to receive and send communication data with the aggregation unit.

[0064] The cloud server is used to communicate with the satellite and the data terminal.

[0065] The data terminal is a device with communication function at the user end, which is used to receive the cloud fault location information or the information pushed by the aggregation unit.

[0066] The power transmission and distribution line of the present invention is an overhead line or a cable.

[0067] The acquisition unit group of the present invention monitors the current and field strength parameters of the power transmission and distribution line, can be associated with multiple aggregation units, and multiple acquisition unit groups are arranged on the power transmission and distribution line. It includes: a power supply module, an energy storage module, a Beidou (or GPS) module, a communication module, a CPU module, a storage module, and an acquisition module.

[0068] The power supply module (model number can be HX4004A) is used to provide converted power for each internal module, and can be connected to a solar panel or a CT.

[0069] The energy storage module (model number can be VEC3R0107QG) is used to store and release electric energy and provide power for each internal module.

[0070] The Beidou (or GPS) module (model number can be UM220-IV) is used to obtain clock, Beidou (or GPS) coordinate information.

[0071] The communication module (model number can be Ra-02) is used to communicate between the acquisition units and with the aggregation unit.

[0072] The CPU module (model number can be STM32L151RCT6) is used to acquire and calculate data.

[0073] The storage module (model number can be GD25Q64) is used to store the received messages, oscillogram data, and configuration information.

[0074] The aggregation unit of the present invention is associated with multiple acquisition unit groups, and is used to receive and send communication data with the acquisition unit groups, acquire the ambient temperature and humidity, altitude, air pressure, Beidou (or GPS) coordinate information, calculate and analyze data and locate line faults, communicate with communication base stations, data terminals, and communicate with other aggregation units. It includes: a power supply module, an energy storage module, a temperature and humidity module, an air pressure module, a Beidou (or GPS) module, an acquisition unit communication module, an aggregation unit interconnection communication module, a satellite communication module, a mobile communication module, a data terminal communication module, a CPU module, a storage module, and a display module.

[0075] The power supply module (model numbers can be CN3795, LO15-10B05) is used to provide converted power for each internal module, and can be connected to a solar panel or other AC / DC power supplies.

[0076] The energy storage module is used to store and release electrical energy, and provides power for each internal module after the external power supply loses power. A 10F, 5.5V supercapacitor can be used.

[0077] The temperature and humidity module (model number can be AM2301) is used to collect environmental temperature and humidity.

[0078] The air pressure module (model number can be MS5611) is used to collect atmospheric pressure.

[0079] The Beidou (or GPS) module (model number can be UM220-IV) is used to obtain clock and coordinate position information.

[0080] The acquisition unit communication module (model number can be Ra-02) is used to communicate with the acquisition unit group and perform wireless time synchronization on the acquisition unit group.

[0081] The aggregation unit interconnection communication module (model number can be E103-W07 or SX1302) is used to establish a communication link between aggregation units, including wireless or wired methods.

[0082] The satellite communication module (model number can be TD3201) is used to send information to satellites or receive data from satellites, and can communicate with Beidou or other communication satellites.

[0083] The mobile communication module (model number can be EC20) is used to send information to mobile communication base stations.

[0084] The CPU module (model number can be RK3568) is used to calculate and analyze data.

[0085] The storage module (model number can be GD25Q64) is used to store received messages, waveform recording data, and configuration information.

[0086] The display module is used to display aggregation unit information and alarm information. A 128*64 dot matrix display and LED lights can be used.

[0087] The communication base station of the present invention is used to receive and send data of aggregation units, and satellites such as Beidou, Qianfan Constellation, Starlink, etc. and mobile communication base stations can be used.

[0088] The cloud server of the present invention is used to receive and send satellite data, receive and send mobile communication network data, respond to requests from data terminals and send response data. Alibaba Cloud servers or self-built servers can be used.

[0089] The data terminal of the present invention is used to connect to the cloud server, and can also be connected to the aggregation unit locally. Smartphones, tablets, laptops can be used, or it can also be a dedicated terminal device.

[0090] Example 2: SeeFigure 1 , Figure 2 , A method for distributed fault location of a power transmission and distribution line, comprising the following steps:

[0091] A) A group of acquisition units (including three phases A, B, and C) monitors the power transmission and distribution line, and the data collected is wirelessly interacted in real time within the group;

[0092] B) The data collected by the group of acquisition units is detected by a data processing method to determine whether a fault has occurred in the line;

[0093] C) The aggregation unit obtains the fault status and information of multiple associated groups of acquisition units;

[0094] D) The aggregation unit starts the logical judgment of line fault location, locates the fault, and the aggregation units communicate and transmit the fault location information;

[0095] E) The aggregation unit communicates with the base station and sends the fault location information to the cloud server.

[0096] F) The aggregation unit and the cloud server finally push the fault location information to the data terminal.

[0097] In the group of acquisition units of the present invention, wireless communication is adopted and is ongoing.

[0098] If Figure 1 the line in is an ungrounded neutral system, the normal operating current is 20 A, a phase A ground fault occurs between acquisition unit groups 2 and 3 at the 50 ms moment and trips after 100 ms, the periodic calculation time is 1 ms, the time value of data Ea of acquisition unit group 2 is approximately 0 after 50 ms, and the field strengths of Eb and Ec increase to times; the time value of data I0 after T is the ground fault current value and exceeds the fixed value I0s; the combined S data is transformed into a state matrix the load current does not change, and the current amplitude data I is transformed into a state matrix Y 2 is a zero matrix, Z 2 is a non-zero matrix, and it is determined that the line has a fault. Acquisition unit group 3 is located after the fault, and the state matrix is The state matrices of other acquisition power groups are Z 1 = Z 2 Z i = Z 3 , i ∈ {4, …, n}, Y j = Y 2 = Y 3 , j ∈ {1, …, n}. For the state matrices Z 1 , …, Z n The adjacent matrix elements are XOR calculated to obtain G x(x+1)State matrix, x ∈ {0, …, n}, G 23 If it is not a zero matrix and the others are zero matrices, it is determined that a ground fault has occurred in the line between collector groups 2 and 3.

[0099] The aggregation units communicate with each other to form a line tree topology.

[0100] After the aggregation unit locates the fault, it pushes the fault location information to the cloud server through the communication base station, and the data terminal obtains the fault location information.

[0101] It should be noted that the above embodiments are not used to limit the protection scope of the present invention. Any equivalent transformation or substitution made on the basis of the above technical solutions falls within the protection scope of the claims of the present invention.

Claims

1. A distributed fault location system for power transmission and distribution lines, characterized in that: The positioning system includes: a power transmission and distribution line, a collection unit group, a collection unit, a communication base station, a cloud server and a data terminal, wherein: Transmission and distribution lines are overhead lines or cables for power transmission and distribution. The acquisition unit group is used to monitor the current of the transmission and distribution line, field strength parameters, and its own state parameters, including battery voltage, temperature, and Beidou (or GPS) coordinate information, and receive and send wireless communication data within the acquisition unit group. The collection unit is used to receive and send communication data with the collection unit group, collect environmental temperature and humidity, altitude, air pressure, Beidou (or GPS) coordinate information, calculate and analyze data and locate line faults, communicate with communication base stations and data terminals, The communication base station is used to receive and send communication data with the collection unit. The cloud server is used to communicate with communication base stations and data terminals. The data terminal is a device with communication function on the user side, which is used to receive fault location information sent by the cloud or information pushed by the aggregation unit.

2. The distributed fault location system for power transmission and distribution lines according to claim 1, characterized in that The acquisition unit group monitors the current and field strength parameters of the transmission and distribution lines and can be associated with multiple collection units. Multiple acquisition unit groups are arranged on the transmission and distribution lines. It includes: a power module, an energy storage module, a Beidou (or GPS) module, a communication module, a CPU module, a storage module and an acquisition module. The power module is used to provide converted power to each internal module and can be connected to a solar panel or CT. The energy storage module is used to store and release electrical energy and provide power for each internal module. The Beidou (or GPS) module is used to obtain clock and Beidou (or GPS) coordinate information. The communication module is used for communication between the collection units in the group and with the collection unit. The CPU module is used to collect and calculate data. The storage module is used to store messages, recorded data, and configuration information. The acquisition module is used to acquire circuit current and field strength.

3. The distributed fault location system for power transmission and distribution lines according to claim 1, characterized in that: The collection unit is associated with multiple collection unit groups, and is used to receive and send communication data with the collection unit group, collect environmental temperature and humidity, altitude, air pressure, Beidou (or GPS) coordinate information, calculate and analyze data and locate line faults, communicate with communication base stations and data terminals, and communicate with other collection units. It includes: a power module, an energy storage module, a temperature and humidity module, an air pressure module, a Beidou (or GPS) module, a collection unit communication module, a collection unit interconnection communication module, a satellite communication module, a mobile communication module, a data terminal communication module, a CPU module, a storage module, and a display module. The power module is used to provide converted power to each internal module and can be connected to a solar panel or other AC or DC power source. The energy storage module is used to store and release electrical energy, and continues to provide power to the internal modules after the external power supply fails. The temperature and humidity module is used to collect the ambient temperature and humidity. The air pressure module is used to collect atmospheric pressure. The Beidou (or GPS) module is used to obtain clock, altitude, Beidou (or GPS) coordinate information. The acquisition unit communication module is used to communicate with the acquisition unit group, The aggregation unit interconnection communication module is used to establish a communication link between the aggregation units, including wireless or wired methods. The satellite communication module is used to send information to a satellite or receive data from a satellite. The mobile communication module is used to send information to a mobile communication base station or receive data from a mobile communication base station. The data terminal communication module is used to send and receive communication data with the data terminal. The CPU module is used to calculate and analyze the collected data. The storage module is used to store received messages, recorded data, and configuration information. The display module is used to display the collection unit information and the alarm information.

4. The distributed fault location system for power transmission and distribution lines according to claim 1, characterized in that: The communication base station includes a mobile communication base station and a satellite. The cloud server is used to receive and send data from the communication base station, respond to requests from the data terminal and send response data. The data terminal is used to connect to a cloud server, or to connect to a collection unit locally.

5. A distributed fault location method for a power transmission and distribution line, applied to the distributed fault location system for a power transmission and distribution line according to any one of claims 1 to 4, characterized in that: The method comprises the following steps: A) The collection unit group (including ABC three-phase) monitors the transmission and distribution lines, and the group collects data in real-time wireless interaction; B) The data collected by the acquisition unit group is processed by a data processing method to detect whether a line fault occurs; C) the collection unit obtains the fault status and information of the associated multiple collection unit groups; D) The aggregation unit starts the line fault location logic judgment and locates the fault, and the aggregation units communicate and transmit the fault location information; E) The aggregation unit communicates with the base station and sends fault location information to the cloud server. F) The collection unit and cloud server push the fault location information to the data terminal.

6. The distributed fault location method for power transmission and distribution lines according to claim 5, characterized in that: Wireless communication is adopted within the collection unit group and is ongoing.

7. The distributed fault location method for power transmission and distribution lines according to claim 5, characterized in that: The data processing method of step (B) is: (7-1) The collector in the collection unit group collects transient line field strength data in real time and calculates the data at the periodic time Ts The collector group collects transient current in real time and calculates transient zero-sequence current data I0={I01,…,I0 n }、Three-phase zero-sequence current angle data A0={A 01 ,…,A 0n }, current phase angle data and current amplitude data (2) The acquisition unit group merges I0 and E data into data The logic of converting data S into a state matrix is: if the element value in the I0 row exceeds the set value I0s, the state value of the element is set to 1, otherwise it is set to 0; if the element value in the Ea / Eb / Ec row exceeds the set value Es, the state value of the element is set to 1, otherwise it is set to 0, and the transformation forms a fault state matrix Z. In the current amplitude data I, if the element value exceeds the set value Is, the state value of the element is set to 1, otherwise it is set to 0, and the transformation forms a fault state matrix Y. If both Y and Z are not zero matrices, it is determined that a fault occurs in the installation line of the acquisition unit, otherwise no fault occurs.

8. The distributed fault location method for power transmission and distribution lines according to claim 5, characterized in that: The fault location logic judgment method in step (D) is: (8-1) The collection unit obtains the state matrix Z1, ..., Z1 of the associated collection unit group n and A0={A 01 ,…,A 0n }; (8-2) The logic of the collection unit to determine the fault location is: for the state matrix Z1, ..., Z n Adjacent matrix elements are XORed to obtain G x(x+1) State matrix, x∈{0,…,n}, G x(x+1) If the matrix is ​​not zero, it is determined that a ground fault occurs in the line between the collector groups, and the collection unit calculates the associated collector group A 0x -A 0x+1 The phase difference, x∈{0,…,n}, marks the fault type according to the set angle; (8-3) The logic of the collection unit to determine the fault location is: for the state matrix Y1, ..., Y n Adjacent matrix elements are XORed to get K x(x+1) State matrix, x∈{0,…,n}, K x(x+1) If it is not a zero matrix, it is determined that a short circuit fault occurs in the line between the collector groups, and the collection unit calculates the associated collector group A x -A x+1 The phase difference, x∈{0,…,n}, marks the fault type according to the set angle.

9. The distributed fault location method for power transmission and distribution lines according to claim 5, characterized in that: The aggregation units are interconnected and communicate with each other to form a line tree topology.

10. The distributed fault location method for power transmission and distribution lines according to claim 5, characterized in that: After the aggregation unit locates the fault, it pushes the fault location information to the cloud server through the communication base station, and the data terminal obtains the fault location information.

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