CN119419703A - Feeder fault automation processing system based on 5G network - Google Patents
Feeder fault automation processing system based on 5G network Download PDFInfo
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- CN119419703A CN119419703A CN202411516381.9A CN202411516381A CN119419703A CN 119419703 A CN119419703 A CN 119419703A CN 202411516381 A CN202411516381 A CN 202411516381A CN 119419703 A CN119419703 A CN 119419703A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
- H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Human Computer Interaction (AREA)
- Computer Networks & Wireless Communication (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
本发明公开了一种基于5G网络的馈线故障自动化处理方法，利用5G通信网络的高速、低延迟和高安全性，提升了配电网的故障处理能力，通过配电终端之间的信息交换，可以结合自身和邻近终端的故障信号，迅速定位故障区域，从而实现故障区段的快速隔离，使得在故障发生时，停电范围被控制在最小范围内，停电时间也得到缩短，故障定位和控制决策完全由配电终端自主完成，整个处理过程不依赖于配电主站，主站仅需在事后接收故障处理结果，此外，该方法能在部分配电终端通信故障时自动更新网络拓扑结构，还可实时监测配电线路中各节点和断路器的运行状态，对电压、电流、功率因数等进行遥测，并可实时显示各节点的运行参数曲线。
The present invention discloses an automatic processing method for feeder faults based on 5G network. The high speed, low latency and high security of the 5G communication network are used to improve the fault processing capability of the distribution network. Through information exchange between distribution terminals, the fault signals of the distribution terminals themselves and adjacent terminals can be combined to quickly locate the fault area, thereby achieving rapid isolation of the fault section, so that when a fault occurs, the power outage range is controlled within a minimum range, and the power outage time is also shortened. The fault location and control decision are completely completed independently by the distribution terminal. The entire processing process does not depend on the distribution master station. The master station only needs to receive the fault processing results afterwards. In addition, the method can automatically update the network topology when some distribution terminals have communication failures, and can also monitor the operating status of each node and circuit breaker in the distribution line in real time, perform telemetry on voltage, current, power factor, etc., and display the operating parameter curve of each node in real time.
Description
Technical Field
The invention belongs to the technical field of distribution network automation, relates to a feeder fault processing system, and in particular relates to a feeder fault automatic processing system based on a 5G network.
Background
Feeder automation is a core component of distribution system automation, and is a basis for realizing efficient and stable power supply. Distribution system automation covers five main aspects, feeder automation, substation automation, electricity usage automation, distribution management automation, and automation communication systems.
Among these aspects, feeder automation is of unique importance, where equipment is distributed throughout the distribution line, and is responsible for fault detection, locating, automatically isolating faulty sections of the distribution line, and restoring power to non-faulty sections. Under normal conditions, the feeder automation system can monitor the states of the feeder sectionalizer and the tie switch, as well as the current and voltage of the feeder in real time. Through the real-time data, the system can remotely control the line switch to realize switching-on and switching-off operations, so that the operation mode of the power distribution network is optimized, and the capacity of the existing equipment is fully utilized. The system can also quickly acquire fault information when faults occur, automatically judge fault types and isolate fault sections, and recover power supply to non-fault areas. This rapid response can significantly reduce outage area and outage time. In addition, under abnormal conditions such as single-phase grounding, the system can assist in locating a problem area, further improve the reliability and quality of power supply and reduce the running and maintenance cost of the power distribution network.
However, the feeder automation of the current 10kV power distribution network has some problems including low response speed, complex operation and low system intelligent degree. These problems can lead to power interruption, inefficiency in operation, and safety concerns. Therefore, improving the intelligent level and reliability of fault handling of the 10kV power distribution network becomes an important point of current research.
At present, the feeder automation technology mainly adopts two modes, namely an in-situ type and a centralized type. In-situ feeder automation locates and isolates faulty sections by inter-terminal communication, timing or logical coordination, restoring power to non-faulty sections. The configuration modes comprise a voltage-time type and an intelligent distributed type. The voltage-time type is generally longer to isolate faults and restore power, and is suitable for urban and rural joints with low requirements on power supply reliability. The intelligent distributed type has high requirement on network communication, and optical fiber ethernet is generally required to realize rapid communication between terminal devices. The centralized feeder automation mode relies on the distribution automation master station to locate fault zones, isolate faults and restore power to non-fault areas by collecting fault information from the distribution terminals. Centralized mode requires high network latency, and fiber optic ethernet is typically used to achieve fast communication between the device and the master station. Although the communication requirement of the intelligent distributed mode and the centralized mode is higher, the optical fiber is higher in laying and maintaining cost, and is inconvenient to popularize especially in urban areas, and the voltage-time type is possibly longer in time in the fault processing process, and frequent power failure in non-fault areas can be caused, so that the user experience is affected.
With the development of the 5G wireless communication technology, the advantages of a simple and flexible networking mode, high-speed communication rate, long-distance transmission capability, high safety reliability and the like are achieved, and a rapid and reliable transmission channel and a time service channel are provided for feeder automation. The high speed, wide coverage, low power consumption and low latency characteristics of 5G networks make it possible to combine 5G networks with feeder automation technology. The combination greatly reduces the laying cost and improves the automatic operation, maintenance and management level of the distribution network.
In conventional distribution networks, feeder automation systems achieve fault localization by monitoring the magnitude or direction of current flowing through switches upstream and downstream of a fault point. However, as distributed power supplies are accessed, fault currents become more complex, and currents may flow in multiple directions, resulting in failure of conventional fault localization methods. Therefore, the exploration and development of a novel fault locating method to adapt to a complex power distribution network environment becomes an important research direction at present.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a feeder line fault automatic processing method based on a 5G network, which can realize the rapid isolation of fault sections, control the power failure range within the minimum range and shorten the power failure time.
The aim of the invention can be achieved by the following technical scheme:
the feeder line fault automatic processing method based on the 5G network comprises the following steps:
Step S1, firstly, defining the flowing current direction flowing into a load side from a power supply side as a positive direction, numbering a plurality of power distribution terminals according to the current flow direction in sequence, establishing a network topology structure through 5G network communication connection between the plurality of power distribution terminals and an upper computer, and inputting the topology structure into the upper computer to form network structure data;
Step S2, when the communication of the power distribution terminal is interrupted, the upper computer deletes the topology of the power distribution terminal, and sends information to the power distribution terminal with the next number, the power distribution terminal with the next number receives information reply confirmation, updates the number and uploads updated topology information to the upper computer, and if the power distribution terminal is not an end power distribution terminal, the upper computer continuously sends information to the adjacent power distribution terminal and updates the number, updates the network topology structure until the power distribution terminal with the next number is updated, and the network topology structure is updated;
Step S3, when the network fails, data are collected through a plurality of power distribution terminals, when the collected current of the power distribution terminals is larger than the set current, the power distribution terminals can be regarded as the fault occurrence on the line, and the fault area is determined on the main line through communication and logic judgment among different power distribution terminals;
And S4, judging the fault type after determining the fault area, alarming to operation maintenance personnel, and informing the operation maintenance personnel to check and process the fault, wherein the alarming mode to the operation maintenance personnel comprises short message alarming and mobile application notification.
Further, the distribution terminal comprises a lower computer, a breaker and a mutual inductor which are arranged in an intelligent terminal box, wherein the mutual inductor is arranged on the power supply side of the breaker, namely the current inflow side, an energy storage power supply which can maintain the distribution terminal to work normally for a designated time is further arranged in the intelligent terminal box, and the breaker is arranged at a power supply substation or a distributed power outlet or an intermediate circuit node.
Further, in step S2, the power distribution terminal uploads the operating parameters to the upper computer when operating normally, and the power distribution terminal uploads the parameters and trip information to the upper computer when failing.
Further, in step S3, after data analysis and logic judgment, the action of the breaker of a certain power distribution terminal is determined, and the action information and the state parameters during faults are uploaded to the upper computer, so that the upper computer can remotely control a plurality of power distribution terminals and manage and schedule network power flows.
Further, the method for judging the fault type in the step S4 includes:
If no other branch circuit containing a distributed power supply exists in the fault area, the upper computer commands the distribution terminal circuit breaker with smaller number to reclose once, if the current is lower than a setting value for transient faults, the network current is recovered to be normal, and information alarm is sent to operation maintenance personnel;
If other branches containing distributed power sources exist in the fault area, the upper computer commands the distribution terminal circuit breaker on the side of the distributed power sources to execute tripping action firstly, then commands the distribution terminal circuit breaker with smaller number on the main line to execute reclosing once immediately, and the fault type is judged to be transient fault or permanent fault.
Further, in step S1, when numbering a plurality of power distribution terminals, the power distribution terminal on the main line is numbered as Q i according to the current flow direction, and the remaining branches including distributed power sources, that is, the power distribution terminals including distributed power sources between the power distribution terminal Q i and the power distribution terminal Q i+1 on the main line are numbered as D i according to the current flow direction, where i is the number.
Further, in step S2, when the power distribution terminal with the number Q k has a communication failure, the next stage of the power distribution terminal with the number Q k+1 is updated with the number Q k, and then the next stage of the power distribution terminal with the number Q k+2、Qk+3……Qk+i is updated with the number Q k+1、Qk+2……Qk+i-1, and the new topology structure is uploaded to the upper computer.
Further, in step S2, when the power distribution terminal with the number Q k has a communication failure, if the power distribution terminal with the number D k exists in the line, the number is updated to a k-1, and the new topology structure is uploaded to the upper computer.
Further, when determining the fault area, searching according to the current flow direction, determining the main circuit distribution terminal with the largest number as the basic distribution terminal, if the basic distribution terminal number of the main circuit is Q k, determining Q k-1,Qk,Qk+1,Dk+1,Ak-1,Dk as the basic fault area, judging whether the current detected by the circuit breaker is in the positive direction, if so, calculating the inflow current and the outflow current according to the kirchhoff inflow law,Calculation of
Wherein the method comprises the steps ofA current phasor detected for the Q k-1 power distribution terminal,A current phasor detected for the Q k power distribution terminal,For the current phasors detected by the D k-1 distribution terminals, ifIf the set setting value is exceeded, judging that the fault interval is in the region formed by Q k-1,Qk and D k-1、Ak-1, ifAnd if the set setting value is not exceeded, respectively identifying the Q k-1 and the Q k+1 as basic power distribution terminals, and judging again according to the steps to determine the real fault area.
The feeder line fault automatic processing method has the beneficial effects that the fault processing capability of the power distribution system is improved by utilizing the high speed, low delay and high safety of the 5G communication network, the fault area can be rapidly positioned by combining fault signals of the power distribution terminals and adjacent terminals through information exchange between the power distribution terminals, so that the fault area is rapidly isolated, the power failure range is controlled in the minimum range when the fault occurs, the power failure time is shortened, the fault positioning and control decision is completely and independently completed by the power distribution terminals, the whole processing process is independent of the power distribution master station, the master station only needs to receive fault processing results afterwards, in addition, the method can automatically update the network topology structure when part of the power distribution terminals communicate faults, monitor the running states of all nodes and circuit breakers in the power distribution circuit in real time, telemetere the voltage, current, power factors and the like, and can display the running parameter curves of all the nodes in real time.
Drawings
Fig. 1 is a schematic diagram of connection of distribution terminals in a 10kV distribution network according to the present invention.
FIG. 2 is a flow chart of the present invention.
FIG. 3 is a schematic diagram of an update topology in the process of handling a failure in the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a feeder line fault automatic processing method based on a 5G network, which is used in a 10kV power distribution network, wherein the power distribution network comprises a plurality of power distribution terminals, and each power distribution terminal consists of a lower computer, a circuit breaker and a transformer which are positioned in an intelligent terminal box. As shown in fig. 1, the multiple power distribution terminals are connected in communication with each other, the multiple power distribution terminals are all connected in communication with the upper computer, a 5G network is established in the line, and the mutual communication between the lower computers and the communication mode between the lower computers and the upper computer are all completed through the 5G network. The intelligent terminal box is provided with a power supply transformer, a power supply side, a current inflow side and an energy storage power supply, wherein the power supply transformer is arranged on the power supply side, the current inflow side of the circuit breaker, the energy storage power supply is arranged in the intelligent terminal box, and the energy storage power supply can maintain normal operation of equipment for 3 minutes. The upper computer can monitor the running states of each power distribution terminal and the circuit breaker in the power distribution network in real time, telemetering the voltage, the current, the power factor and the like, and can display the running parameter curves of each power distribution terminal in real time.
As shown in fig. 2, the feeder fault automation processing method includes the following steps:
Step S1, a network topology structure is established.
The method includes the steps of firstly defining the flowing current direction flowing from the power supply side to the load side as a positive direction, numbering a plurality of distribution terminals according to the current flowing direction, numbering the distribution terminals on a main line as Q i as shown in fig. 3, numbering the rest distribution terminals containing distributed power sources between the distribution terminals Q i and Q i+1 as D i according to the current flowing direction, wherein i is the number, and inputting the topological structure into an upper computer to form network structure data.
And step S2, updating the network topology when the communication is failed.
When the communication of the power distribution terminal is interrupted, the upper computer deletes the topology of the power distribution terminal, sends information to the power distribution terminal with the next number and acquires related parameters, the power distribution terminal with the next number receives information reply confirmation, updates the number and uploads updated topology information to the upper computer, and if the power distribution terminal is not an end power distribution terminal, the upper computer continuously sends information to the adjacent power distribution terminal and updates the number, updates the network topology structure until the power distribution terminal with the next number is updated, and the network topology structure is updated.
Specifically, when the power distribution terminal numbered Q k in fig. 3 (a) has a communication failure, the next stage of the power distribution terminal numbered Q k+1 is updated to be numbered Q k, the next stage of the power distribution terminal numbered Q k+2、Qk+3……Qk+i is updated to be numbered Q k+1、Qk+2……Qk+i-1, meanwhile, the number of the power distribution terminal numbered D k existing in the line is updated to be a k-1, the updated topology is as shown in fig. 3 (B), and the new topology is uploaded to the upper computer.
And S3, determining a fault area.
When the network fails, data are collected through a plurality of power distribution terminals, and when the collected current of the power distribution terminals is larger than the set current, the power distribution terminals can be regarded as the occurrence of faults on the line, and the fault area is determined on the main line through communication and logic judgment among different terminals.
Specifically, when determining a fault area, searching is firstly performed according to the positive direction of the current flow, and a main line distribution terminal with the largest number is determined as a base distribution terminal. Judging the authenticity of a fault area, namely, if the number of a basic distribution terminal of a main line is Q k, determining Q k-1,Qk,Qk+1,Dk-1,Ak-1 as the basic fault area, judging whether the current detected by a circuit breaker is in a positive direction, and if the current detected by the circuit breaker is in a fixed positive direction, calculating the inflow current and the outflow current according to kirchhoff current law, wherein the basic distribution terminal is Q k-1,Qk,Qk+1,Dk-1,Ak-1 is the basic fault areaCalculation ofWherein the method comprises the steps ofA current phasor detected for the Q k-1 power distribution terminal,A current phasor detected for the Q k power distribution terminal,Current phasors detected for D k-1 distribution terminals, ifExceeding the set setting value, wherein the setting value is set as the minimum short-circuit current during fault, judging the real fault interval to be in the region formed by Q k-1、Qk and D k-1、Ak-1, ifAnd if the set setting value is not exceeded, respectively identifying the Q k-1 and the Q k+1 as basic power distribution terminals, and judging again according to the steps to determine the real fault area.
And S4, processing faults and alarming.
And after determining the real fault area, judging that the fault type is transient fault or permanent fault, alarming to operation maintenance personnel through a short message alarming and mobile application notifying alarming mode, and checking the fault reason in time.
The specific operation of judging the fault type is as follows:
If no other branch circuit containing distributed power supply exists in the fault area, namely, no power distribution terminal breaker with D k-1、Ak-1 exists, the breaker of the main line power distribution terminal Q k-1 with smaller command number of the upper computer is reclosed once, if the current of the network is lower than a setting value for transient faults, the network is recovered to be normal, information alarm is sent to operation maintenance personnel, if the current collected by the power distribution terminal after reclosing once is still greater than the setting value, the power distribution terminal breaker is automatically disconnected at the moment, the fault is determined to be a permanent fault, and information alarm is sent to the operation maintenance personnel.
If other branches containing distributed power sources exist in the fault area, namely, when the circuit breaker of the distribution terminal containing D k-1、Ak-1 is arranged, the upper computer commands the circuit breaker of the distribution terminal D k-1、Ak-1 on the side of the distributed power sources to execute tripping operation firstly, then the circuit breaker of the distribution terminal Q k-1 on the main line immediately executes reclosing once, the fault type is judged to be transient fault or permanent fault, and the action information of each time and the state parameters of the fault are uploaded to the upper computer.
The foregoing is merely illustrative of the structures of this invention and various modifications, additions and substitutions for those skilled in the art can be made to the described embodiments without departing from the scope of the invention or from the scope of the invention as defined in the accompanying claims.
Claims (9)
1. The feeder line fault automatic processing method based on the 5G network is characterized by comprising the following steps of:
step S1, numbering a plurality of power distribution terminals according to current flow direction, establishing a network topology structure through 5G network communication connection between the plurality of power distribution terminals and an upper computer, and inputting the topology structure into the upper computer to form network structure data;
Step S2, when the communication of the power distribution terminal is interrupted, the upper computer deletes the topology of the power distribution terminal, and sends information to the power distribution terminal with the next number, the power distribution terminal with the next number receives information reply confirmation, updates the number and uploads updated topology information to the upper computer, and if the power distribution terminal is not an end power distribution terminal, the upper computer continuously sends information to the adjacent power distribution terminal and updates the number, updates the network topology structure until the power distribution terminal with the next number is updated, and the network topology structure is updated;
Step S3, when the network fails, data are collected through a plurality of power distribution terminals, when the collected current of the power distribution terminals is larger than the set current, the power distribution terminals can be regarded as the fault occurrence on the line, and the fault area is determined on the main line through communication and logic judgment among different power distribution terminals;
And S4, judging the fault type after determining the fault area, alarming to operation maintenance personnel, and informing the operation maintenance personnel of checking and processing the fault.
2. The feeder line fault automatic processing method according to claim 1, wherein the distribution terminal is composed of a lower computer, a breaker and a transformer which are located in an intelligent terminal box, wherein the transformer is arranged on a power supply side of the breaker, namely a current inflow side, and an energy storage power supply capable of maintaining normal operation of the distribution terminal for a specified time is further arranged in the intelligent terminal box.
3. The feeder line fault automatic processing method according to claim 1, wherein in step S2, the power distribution terminal uploads the operating parameters to the upper computer when operating normally, and the power distribution terminal uploads the parameters and trip information to the upper computer when failing.
4. The feeder line fault automatic processing method according to claim 1, wherein in step S3, after data analysis and logic judgment, the action of the circuit breaker of a certain power distribution terminal is determined, and the action information and the state parameters during fault are uploaded to an upper computer, so that the upper computer can remotely control a plurality of power distribution terminals and manage and schedule network power flows at the same time.
5. The feeder fault automated processing method according to claim 1, wherein the method of determining the fault type in step S4 includes:
If no other branch circuit containing a distributed power supply exists in the fault area, the upper computer commands the distribution terminal circuit breaker with smaller number to reclose once, if the current is lower than a setting value for transient faults, the network current is recovered to be normal, and information alarm is sent to operation maintenance personnel;
If other branches containing distributed power sources exist in the fault area, the upper computer commands the distribution terminal circuit breaker on the side of the distributed power sources to execute tripping action firstly, then commands the distribution terminal circuit breaker with smaller number on the main line to execute reclosing once immediately, and the fault type is judged to be transient fault or permanent fault.
6. The automated feeder fault handling method according to claim 1, wherein in step S1, when a plurality of distribution terminals are numbered, the distribution terminal on the main line is numbered Q i according to the current flow direction, and the remaining branches including distributed power sources, that is, the distribution terminal including distributed power sources between the distribution terminal Q i and the distribution terminal Q i+1 on the main line is numbered D i according to the current flow direction, where i is the number.
7. The automated feeder fault handling method according to claim 6, wherein in step S2, when a communication fault occurs in the power distribution terminal with the number Q k, the next stage of the power distribution terminal with the number Q k+1 is updated with the number Q k, the next stage of the power distribution terminal with the number Q k+2、Qk+3……Qk+i is updated with the number Q k+1、Qk+2……Qk+i-1, and the new topology is uploaded to the host computer.
8. The automated feeder fault handling method according to claim 7, wherein in step S2, when the power distribution terminal with the number Q k has a communication fault, if the power distribution terminal with the number D k exists in the line, the number is updated to a k-1, and the new topology is uploaded to the upper computer.
9. The automated feeder fault handling method of claim 8, wherein, when determining the fault area, searching is performed according to the current flow direction to determine the main line distribution terminal where the overcurrent data is detected, wherein the distribution terminal with the largest number is the base distribution terminal, if the base distribution terminal number of the main line is Q k, Q k-1,Qk,Qk+1,Qk-1,Ak-1,Dk is determined as the base fault area, whether the current detected by the circuit breaker is in the positive direction is determined, if the current detected by the circuit breaker is in the fixed positive direction, the inflow current and the outflow current are calculated according to kirchhoff inflow law,Calculation ofWherein the method comprises the steps ofA current phasor detected for the Q k-1 power distribution terminal,A current phasor detected for the Q k power distribution terminal,For the current phasors detected by the D k-1 distribution terminals, ifIf the set setting value is exceeded, judging that the fault interval is in the region formed by Q k-1、Qk and D k-1、Ak-1, ifAnd if the set setting value is not exceeded, respectively identifying the Q k-1 and the Q k+1 as basic power distribution terminals, and judging again according to the steps to determine the real fault area.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119853298A (en) * | 2025-03-19 | 2025-04-18 | 云谷技术(珠海)有限公司 | Comprehensive management system of distributed power distribution terminal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119853298A (en) * | 2025-03-19 | 2025-04-18 | 云谷技术(珠海)有限公司 | Comprehensive management system of distributed power distribution terminal |
| CN119853298B (en) * | 2025-03-19 | 2025-07-01 | 云谷技术(珠海)有限公司 | An integrated management system for distributed power distribution terminals |
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