CN110867838A - Distribution network fault processing method based on 5G communication technology - Google Patents
Distribution network fault processing method based on 5G communication technology Download PDFInfo
- Publication number
- CN110867838A CN110867838A CN201911139627.4A CN201911139627A CN110867838A CN 110867838 A CN110867838 A CN 110867838A CN 201911139627 A CN201911139627 A CN 201911139627A CN 110867838 A CN110867838 A CN 110867838A
- Authority
- CN
- China
- Prior art keywords
- terminal
- communication
- distribution network
- adjacent
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Landscapes
- Telephonic Communication Services (AREA)
Abstract
The invention provides a distribution network fault processing method based on 5G communication technology, aiming at the defects of long fault processing time, high construction cost, poor selectivity and the like of various existing distribution network fault processing modes, utilizing the characteristics of low delay, high bandwidth, stable transmission and the like of 5G communication, taking the 5G communication as a fault signal transmission channel, comprehensively considering the technical indexes of 5G communication transmission delay, packet loss rate and the like, providing high reliability based on fault information interactive transmission and logic strategies between terminals, the distribution network fault processing method with good selectivity and strong fault tolerance realizes rapid positioning and isolation of feeder line faults in 200 milliseconds and automatic power restoration of a non-fault area, realizes conversion from a distribution network fault processing minute level to a millisecond level, enables areas of power failure areas to be smaller, resident power failure times to be fewer, call waiting time to be shorter, and remarkably improves the reliability of distribution network power supply.
Description
Technical Field
The invention relates to the technical field of power supply terminals, in particular to a distribution network fault processing method based on a 5G communication technology.
Background
After a power distribution network fails, fault isolation and self-healing are generally realized by a power distribution automation system, and generally adopted modes include a centralized mode and an in-situ mode, wherein the in-situ mode mainly comprises a voltage time type, an overcurrent level difference type, a voltage-current time type, a self-adaptive type and an optical fiber intelligent distributed type.
The centralized fault processing mode uniformly uploads terminal acquisition signals to a distribution automation main station, the main station analyzes and determines the fault position according to the distribution network topological structure and the terminal information, the three-remote terminal can automatically/manually control the two-side switches of the fault point to trip and isolate faults and control the relevant interconnection switches to close and self-heal, and for the non-remote terminal, the fault position can only be indicated and the on-site operation and isolation faults are waited. The centralized fault processing mode has a large dependence on communication, communication fails once a problem occurs, centralized processing by the master station is needed, the requirement on the processing capacity of the master station is high, the algorithm is complex, and the fault processing time is long.
The in-situ fault processing mode does not depend on a main station system, fault isolation and self-healing can be realized only by action logic of the terminals or mutual communication between the terminals, remote control is not needed, and the fault processing time is relatively short. The voltage time type (including switching-on quick-break), the voltage-current time type and the self-adaptive type realize mutual matching among the switches through the logic setting of the switches, and realize fault identification, isolation and self-healing, the mode does not depend on communication, but the fault isolation and recovery time is longer, 1-2 times of power failure of a whole line is needed, the power supply quality is influenced, and the impact on the system and equipment is larger.
The overcurrent pole difference type realizes the on-site fault isolation through the current and time constant value setting between terminals, and the method has the advantages of difficult constant value setting, longer action delay of an outlet switch in a station and easy expansion of an accident range. The distributed dependence optical fiber communication of optic fibre intelligence realizes the information transmission between the terminal, and the terminal is according to self information collection and adjacent terminal information, differentiates the fault section, keeps apart the fault area on the spot, but this kind of mode light lays difficultly, and the construction cost is high, in case optic fibre suffers destruction, unable normal work, and communication recovery time is slower.
Disclosure of Invention
In view of this, the present invention is directed to a distribution network fault handling method based on a 5G communication technology, so as to implement local fault identification and isolation without depending on a master station system.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a distribution network fault processing method based on a 5G communication technology comprises the following steps:
establishing a wireless public network based on a 5G communication technology;
detecting the running state of each terminal of the power distribution network in real time, judging whether each terminal has overcurrent information or not in real time, if the terminal has the overcurrent information, judging that the terminal is in an abnormal state, and sending an abnormal signal to adjacent terminals based on a wireless public network; if the terminal has no overcurrent information, the normal state of the terminal is judged, and a normal signal is sent to the adjacent terminals based on the wireless public network
When the main line terminal detects an abnormal state, if a normal state exists in the received adjacent terminal states within a predetermined delay time T2 which is greater than a communication delay T1, the switch of the main line terminal is switched off;
when the trunk line terminal is in a normal state, if an abnormal signal of an adjacent terminal is received, the switch of the trunk line terminal is disconnected;
when the branch terminal detects an abnormal state or receives an abnormal signal of an adjacent terminal, the switch of the branch terminal is turned off.
Further, the fault handling method further comprises the step of judging whether the communication state of the adjacent terminal is normal.
Further, when the communication between the trunk line terminal and the adjacent terminal is abnormal, the trunk line terminal and the secondary adjacent terminal reestablish the communication, and the switch of the trunk line terminal is controlled based on the communication of the operation states of the trunk line terminal and the secondary adjacent terminal.
Further, when the branch terminal fails in communication, the branch terminal exits the associated network and is not included in the distribution network failure processing method until communication is recovered.
Further, if the communication between the trunk line terminal and the adjacent terminal is abnormal and the communication between the trunk line terminal and the secondary adjacent terminal cannot be established, the trunk line terminal immediately locks the main protection based on the operation state and starts the conventional current protection.
Further, when the trunk line terminal detects an abnormal state, if the trunk line terminal changes from the abnormal state to the normal state within the delay of T2, the terminal logically operates in the normal state and transmits the state change information to the adjacent terminal.
Further, if the current collected by the terminal is greater than the setting threshold, it is determined that the terminal has over-current information, and if the current collected by the terminal is less than or equal to the setting threshold, it is determined that the terminal does not have over-current information.
Further, when the adjacent terminals are in normal communication, the number N of times of sending messages among the terminals is set to be related to the packet loss rate of 5G communication transmission; and when the terminal is changed from the normal state to the abnormal state, the abnormal signal is continuously sent for N times.
Further, the method also comprises a step of recovering the power supply of the non-failure area by means of the tie switch logic in the non-failure area.
Further, the power supply recovering step includes: and if the interconnection switch detects that one end of the interconnection switch is provided with voltage and the other end of the interconnection switch is not provided with voltage, and the interconnection switch is communicated with the adjacent switch at the non-voltage side normally and does not receive the abnormal signal of the adjacent switch within the time T2 before voltage loss, the interconnection switch is switched on for power supply after the preset delay time T3.
Compared with the prior art, the invention has the following advantages:
(1) according to the distribution network fault processing method based on the 5G communication technology, the 5G communication is used as a fault signal transmission channel by establishing the wireless public network based on the 5G communication, so that the characteristics of low delay, high bandwidth, stable transmission and the like of the 5G communication can be utilized, the quick fault positioning and isolation can be realized quickly, the fault local identification can be realized without depending on a main station system, the distribution network power supply reliability can be obviously improved, the construction cost is greatly reduced compared with optical fiber communication, the installation is convenient, the realization is easy, meanwhile, the delay time T2 based on the communication delay T1 is set, and the reliability, the selectivity and the quick action of protection actions are ensured.
(2) The method adopts a 'crossing' connection strategy aiming at the fault event of the communication equipment, so that the method has stronger fault tolerance and improves the selectivity of protection to the maximum extent.
(3) Aiming at the fault event of the communication network, the method adopts a main protection locking strategy, so that the switch can still reliably act under the interrupted state of the communication network, and the fault can be isolated in situ.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram of a distribution network topology according to an embodiment of the present invention;
fig. 2 is a flow chart of the fault isolation of the main line terminal according to the embodiment of the present invention;
fig. 3 is a flow chart of fault isolation of a branch line terminal according to an embodiment of the present invention;
fig. 4 is a flow chart of power restoration of the tie switch according to the embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The embodiment relates to a distribution network fault processing method based on a 5G communication technology, which comprises the following steps: establishing a wireless public network based on a 5G communication technology; detecting each terminal of a power distribution network in real time, judging whether each terminal has overcurrent information or not in real time, if the terminal has the overcurrent information, judging that the terminal is in an abnormal state, and sending an abnormal signal to adjacent terminals based on a wireless public network; if the terminal does not have overcurrent information, judging the normal state of the terminal, sending a normal signal to the adjacent terminal based on the wireless public network, and when the trunk line terminal detects the abnormal state, if the abnormal signal of the adjacent terminal is not received within a preset delay time T2 which is greater than the communication delay T1, switching off the switch of the trunk line terminal; when the trunk line terminal is in a normal state, if an abnormal signal of an adjacent terminal is received, the switch of the trunk line terminal is disconnected; when the branch terminal detects an abnormal state or receives an abnormal signal of an adjacent terminal, the switch of the branch terminal is turned off.
In this embodiment, the above-mentioned over-current information specifically refers to that, if the current collected by the terminal is greater than the setting threshold, it is determined that over-current information exists in the terminal, and if the current collected by the terminal is less than or equal to the setting threshold, it is determined that over-current information does not exist in the terminal. When overcurrent information exists in each terminal, the terminal is indicated to have a fault, the overcurrent information value of the terminal is defined as 1 at the moment, when the overcurrent information does not exist in each terminal, the terminal is indicated to operate normally, and the overcurrent information value of the terminal is defined as 0 at the moment.
The method has the following actions of automatically isolating the distribution network terminal fault area, specifically, when the main line terminal overcurrent information value is 1, waiting for receiving the adjacent terminal information value, if a signal that the adjacent terminal overcurrent information value is 1 is not received within T2 time delay, tripping the control switch of the main line terminal after T2 time delay is reached, otherwise not tripping the control switch of the main line terminal; when the overcurrent information value of the trunk line terminal is 0, if the overcurrent information value of one adjacent terminal is 1, the control switch of the trunk line terminal immediately trips. The main line terminal overcurrent information value is 1, and if the main line terminal is changed from the abnormal state to the normal state within the delay of T2, the terminal logically operates according to the normal state and transmits the state change information to the adjacent terminal.
When the overcurrent information value of the branch terminal is 1, the control switch of the branch terminal immediately trips; when the overcurrent information value of the branch terminal is 0, waiting for receiving the information value of the adjacent terminal, and when the overcurrent information value of one adjacent terminal is 1, immediately actuating the switch to trip.
More specifically, when the communication connection between the trunk line terminal and the adjacent terminal is normal, the trunk line terminal judges whether the overcurrent information value of the trunk line terminal is 1, if so, the trunk line terminal immediately sends the overcurrent information value to the adjacent terminal and waits for receiving the overcurrent information value of the adjacent terminal, and within the time delay of T2, if a signal that the overcurrent information value of the adjacent terminal is 1 is received, the fault is judged not to be at the upstream or downstream of the trunk line terminal, the switch does not act, otherwise, the trunk line terminal acts and trips; if the overcurrent information value of the trunk line is 0, waiting for receiving the overcurrent information value of the adjacent terminal, if the overcurrent information value of the adjacent terminal is 1, judging that the fault is positioned at the upstream or downstream of the trunk line terminal, and tripping the switch outlet, otherwise, not operating the outlet of the trunk line terminal.
For a branch line terminal, when the overcurrent information value of the branch terminal is 1, the switch immediately acts to trip, simultaneously the overcurrent information value is transmitted to an adjacent terminal, and if the communication is abnormal, an alarm is given; and when the overcurrent information value of the branch terminal is 0, waiting for receiving the information value of the adjacent terminal, and when the overcurrent information value of one adjacent terminal is 1, immediately acting the switch to trip, otherwise, returning to the initial state.
Referring to fig. 1, K1, K2, K3, K6, and K9 are terminals disposed on a trunk line, that is, trunk line terminals described in this embodiment, K4, K5, and K7 are terminals disposed on branches, that is, branch terminals described in this embodiment, and F1 and F2 are fault information points.
When F1 has a fault, the overcurrent information values of the terminals of the nodes K1, K2, K3 and K5 are all 1, but the fault is cut off by tripping immediately after the overcurrent information value of the branch switch K5 is changed into 1, the overcurrent information values of the switches K1, K2 and K3 in the time delay of T2 are all changed into 0 from 1, the algorithm is reset, and the overcurrent information values of the switches K1, K2 and K3 are all 0.
The fault processing method of this embodiment further includes a step of determining whether the communication state of the adjacent terminal is normal, where the step includes reestablishing communication between the trunk line terminal and the secondary adjacent terminal when the communication between the trunk line terminal and the adjacent terminal is abnormal, and controlling a switch of the trunk line terminal based on the communication between the operation states of the trunk line terminal and the secondary adjacent terminal; when the branch terminal communication fails, the branch terminal exits the associated network and is not included in the distribution network fault processing method until the communication is recovered; if the communication between the main line terminal and the adjacent terminal is abnormal and the communication between the main line terminal and the secondary adjacent terminal cannot be established, the main line terminal immediately locks main protection based on overcurrent information and starts conventional current protection.
Specifically, referring to fig. 1, when a problem occurs in communication of the terminal K3, the K2 and the K3 cannot establish a communication connection, and at this time, the K2 automatically jumps to establish a connection between the K3 and the downstream switches K4, K5, and K6 of the K3, similarly, the K4, the K5, and the K6 automatically jumps to handshake connection between the K3 and the K2, and the K3, the K4, the K5, and the K6 are secondary adjacent terminals. And after the terminal reestablishes a new adjacent relation, the secondary adjacent terminal replaces the original adjacent problem terminal, and the outlet trip condition is unchanged. The "cross-over" connection, although less selective than before communication interruption, remains within a controlled range so as not to trip the substation outlet switch, causing a wide-range power outage. When the terminal communication on the branch line fails, such as the communication failure occurs at K4 in the figure, the failed branch automatically exits the associated communication network and is not included in the distribution network failure processing method until the communication is recovered.
In addition, the distribution network fault processing method based on the 5G communication technology in this embodiment further includes a step of performing power supply recovery on the non-fault area by using tie switch logic in the non-fault area, and specifically, the power supply recovery step includes: and if the interconnection switch detects that one end of the interconnection switch is provided with voltage and the other end of the interconnection switch is not provided with voltage, and the interconnection switch is communicated with the adjacent switch at the non-voltage side normally and does not receive the abnormal signal of the adjacent terminal within the time T2 before voltage loss, the interconnection switch is switched on for power supply after the preset delay time T3. And if the communication between the interconnection switch and the non-voltage side adjacent switch is abnormal, the interconnection switch is closed in a locking way.
In this embodiment, in order to ensure the reliability of receiving information by a terminal, when the adjacent terminals perform normal communication, the number N of times of sending messages between the terminals is set to be related to the packet loss rate of 5G communication transmission; and when the terminal is changed from the normal state to the abnormal state, the abnormal signal is continuously transmitted N times (for example, 4-6 times), and when the acknowledgement of the adjacent terminal is not received N times, the abnormal signal is continuously transmitted.
One embodiment of the method comprises the following steps, which can be referred to in fig. 2, 3 and 4:
1. establishing a wireless public network based on a 5G communication technology;
2. collecting electrical information of a trunk line terminal and detecting whether the communication of the trunk line terminal is normal;
2.1, when the communication with the adjacent terminal is normal: judging whether the overcurrent information value of the trunk line terminal is 1 or not;
2.11, if the overcurrent information value of the trunk line terminal is 1, sending the overcurrent information value to the adjacent terminal within the time delay of T2, and judging whether all the overcurrent information values of the adjacent terminals are 1;
2.111 if the overflow information values of the adjacent terminals are all 1, returning to the initial step;
2.112 if the overcurrent information values of the adjacent terminals are not all 1, judging that the main line terminal has a fault, and controlling the switch to trip by the main line terminal;
2.12, if the overcurrent information value of the trunk line terminal is 0, judging whether an overcurrent information value of an adjacent terminal is 1;
2.121 if the overcurrent information value of the adjacent terminal is 1, the main line terminal controls the switch to trip;
2.122 if the adjacent terminal overcurrent information value is not 1, the switch does not act;
2.2, when the communication with the adjacent terminal is abnormal: judging whether the communication connection with the secondary adjacent terminal can be established or not;
and 2.21, if the main line terminal cannot establish communication connection with the secondary adjacent terminal, immediately locking main protection based on overcurrent information by the main line, and starting conventional current protection.
And 2.22, if the main line terminal can establish communication connection with the secondary adjacent terminal, taking the new secondary adjacent terminal as the adjacent terminal of the main line terminal, and executing the step 2.1.
3. Collecting electrical information of a branch terminal and judging whether the overcurrent information value of the branch terminal is 1 or not;
3.1, if the overcurrent information value of the branch terminal is 1, immediately controlling a switch to trip, and judging whether the communication between the branch terminal and an adjacent terminal is normal;
and 3.11, if the branch terminal is not communicated with the adjacent terminal normally, alarming.
3.12, if the branch terminal and the adjacent terminal are in normal communication, sending an over-current information value to the adjacent terminal and receiving the over-current information value of the adjacent terminal;
3.2, if the overcurrent information value of the branch terminal is 0, waiting for receiving the overcurrent information value of the adjacent branch terminal;
3.21, if the overcurrent information value of the adjacent terminal is 0, returning to the initial state;
and 3.22, if the overcurrent information value of the adjacent terminal is 1, the branch terminal controls the switch to trip.
4. Collecting electrical information of the interconnection switch and detecting whether the interconnection switch is in single-side voltage loss or not;
4.1, if the interconnection switch is not in a single-side voltage loss state, returning to an initial state;
4.2, if the interconnection switch is in a single-side voltage loss state, judging whether the communication with the adjacent terminal is normal;
4.21, if the communication is abnormal, closing the switch;
4.22, if the communication is normal, judging whether a signal with an overcurrent information value of an adjacent terminal being 1 is received within T2 time before voltage loss;
4.221, if the interconnection switch receives a signal that the value of the overcurrent information of the adjacent terminal is 1, closing the switch;
4.222, if the interconnection switch does not receive the signal that the overcurrent information value of the adjacent terminal is 1, the power supply is switched on after the time delay T3.
In summary, the distribution network fault processing method based on the 5G communication technology in this embodiment has the following advantages compared with the prior art:
1. the method can realize the on-site identification, isolation and self-healing of the fault without depending on a main station system, wherein the fault processing time (fault area isolation and non-fault area self-healing) can be changed from the existing minute level to the millisecond level, and the fault processing time is less than 200ms through testing.
2. The method adopts 5G communication, compared with an optical fiber communication network, the construction cost can be obviously reduced, and the 5G communication equipment is convenient to install, easy to realize and convenient to maintain.
3. The distribution network fault processing method comprises main line terminal, branch terminal and interconnection switch strategy configuration, can meet fault isolation and self-healing requirements, and achieves full coverage of each node protection of the distribution network line.
4. The distribution network fault processing method of the embodiment considers the problem of the packet loss rate of the 5G communication network, proposes a sending strategy for N times, establishes a retransmission mechanism, and ensures reliable reception of the changed overcurrent information value.
5. According to the distribution network fault processing method, T2 time delay penetrating through the whole process is set according to the communication time delay T1, and the reliability, selectivity and quick-action performance of protection actions are guaranteed.
6. The distribution network fault processing method of the embodiment adopts a 'crossing' connection strategy aiming at the fault event of the communication equipment, so that the method has stronger fault tolerance and the protection selectivity is improved to the maximum extent.
7. The distribution network fault processing method of the embodiment aims at the communication network fault event, adopts the main protection locking strategy, and can realize that the switch can still reliably act under the interruption state of the communication network so as to isolate the fault in place.
8. The method for processing the distribution network fault is not required to be adjusted when the operation mode is changed, and is also applicable.
9. The method has wide application scenes, can be realized in places covered by 5G wireless communication, and has wide application prospect with the increasing of the coverage rate of 5G communication.
It should be noted that any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and that the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried out to implement the above embodiments may be implemented by hardware instructions associated with a program, which may be stored in a computer-readable storage medium, and which, when executed, includes one or a combination of the steps of the method embodiments.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A distribution network fault processing method based on a 5G communication technology is characterized by comprising the following steps:
establishing a wireless public network based on a 5G communication technology;
detecting the running state of each terminal of the power distribution network in real time, judging whether each terminal has overcurrent information or not in real time, if the terminal has the overcurrent information, judging that the terminal is in an abnormal state, and sending an abnormal signal to adjacent terminals based on a wireless public network; if the terminal does not have overcurrent information, judging the normal state of the terminal, and sending a normal signal to the adjacent terminals based on the wireless public network;
when the main line terminal detects the abnormal state, if the received state information of the adjacent terminal has the normal state in the preset delay time T2 which is larger than the communication delay T1, the switch of the main line terminal is switched off;
when the trunk line terminal is in a normal state, if an abnormal signal of an adjacent terminal is received, the switch of the trunk line terminal is disconnected;
when the branch terminal detects an abnormal state or receives an abnormal signal of an adjacent terminal, the switch of the branch terminal is turned off.
2. The distribution network fault handling method based on the 5G communication technology, according to claim 1, is characterized in that: the fault processing method also comprises the step of judging whether the communication state of the adjacent terminal is normal.
3. The distribution network fault handling method based on the 5G communication technology according to claim 2, characterized in that: when the communication between the trunk line terminal and the adjacent terminal is abnormal, the trunk line terminal and the secondary adjacent terminal reestablish the communication, and the switch of the trunk line terminal is controlled based on the communication of the operation states of the trunk line terminal and the secondary adjacent terminal.
4. The distribution network fault handling method based on the 5G communication technology, according to claim 3, is characterized in that: and when the branch terminal has communication fault, the branch terminal exits the associated network and is not included in the distribution network fault processing method until the communication is recovered.
5. The distribution network fault handling method based on the 5G communication technology, according to claim 3, is characterized in that: if the communication between the main line terminal and the adjacent terminal is abnormal and the communication between the main line terminal and the secondary adjacent terminal cannot be established, the main line terminal immediately locks the main protection based on the operation state and starts the conventional current protection.
6. The distribution network fault handling method based on the 5G communication technology, according to claim 1, is characterized in that: when the trunk line terminal detects an abnormal state, if the trunk line terminal changes from the abnormal state to a normal state within a delay of T2, the terminal logically operates in the normal state and transmits state change information to an adjacent terminal.
7. The distribution network fault handling method based on the 5G communication technology, according to claim 1, is characterized in that: and if the current collected by the terminal is less than or equal to the setting threshold value, judging that the overcurrent information exists in the terminal.
8. The distribution network fault handling method based on the 5G communication technology, according to claim 1, is characterized in that: when the adjacent terminals are in normal communication, the message sending times N among the terminals are set to be related to the packet loss rate of 5G communication transmission; and when the terminal is changed from the normal state to the abnormal state, the abnormal signal is continuously sent for N times.
9. The distribution network fault handling method based on the 5G communication technology, according to claim 1, is characterized in that: and the non-failure area power supply recovery step is carried out by depending on the interconnection switch logic.
10. The distribution network fault handling method based on the 5G communication technology, according to claim 1, is characterized in that: the power supply restoration step includes: and if the interconnection switch detects that one end of the interconnection switch is provided with voltage and the other end of the interconnection switch is not provided with voltage, and the interconnection switch is communicated with the adjacent switch at the non-voltage side normally and does not receive the abnormal signal of the adjacent switch within the time T2 before voltage loss, the interconnection switch is switched on for power supply after the preset delay time T3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911139627.4A CN110867838A (en) | 2019-11-20 | 2019-11-20 | Distribution network fault processing method based on 5G communication technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911139627.4A CN110867838A (en) | 2019-11-20 | 2019-11-20 | Distribution network fault processing method based on 5G communication technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110867838A true CN110867838A (en) | 2020-03-06 |
Family
ID=69655658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911139627.4A Pending CN110867838A (en) | 2019-11-20 | 2019-11-20 | Distribution network fault processing method based on 5G communication technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110867838A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111509679A (en) * | 2020-04-09 | 2020-08-07 | 陕西省地方电力(集团)有限公司延安供电分公司 | Cloud computing distribution network level difference protection system and method based on 5G |
| CN111864901A (en) * | 2020-06-30 | 2020-10-30 | 国网江苏省电力有限公司南京供电分公司 | Distributed FA and main station FA cooperative control method capable of adapting to communication time delay |
| CN112311090A (en) * | 2020-09-29 | 2021-02-02 | 国网安徽省电力有限公司 | Distributed fault recovery method and system for ring distribution network adapting to 5G communication network |
| CN114062858A (en) * | 2021-10-26 | 2022-02-18 | 西安理工大学 | Fault identification and detection system for 5G technology distribution network equipment |
| CN114336545A (en) * | 2021-12-15 | 2022-04-12 | 北京科锐配电自动化股份有限公司 | Distributed protection method and medium with adaptive communication rate capability |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101752906A (en) * | 2009-12-17 | 2010-06-23 | 周友东 | High-voltage switch intelligent control system and control method thereof |
| CN106253250A (en) * | 2016-08-23 | 2016-12-21 | 江苏方天电力技术有限公司 | A kind of distributed rapid protection system of intelligent distribution network and guard method |
| CN106712301A (en) * | 2017-02-09 | 2017-05-24 | 山东理工大学 | Fault-tolerant processing method suitable for distributed fault self-recovery of power distribution network |
| CN211880175U (en) * | 2020-04-28 | 2020-11-06 | 上海道博电气有限公司 | Intelligent distributed feeder device based on 5G |
-
2019
- 2019-11-20 CN CN201911139627.4A patent/CN110867838A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101752906A (en) * | 2009-12-17 | 2010-06-23 | 周友东 | High-voltage switch intelligent control system and control method thereof |
| CN106253250A (en) * | 2016-08-23 | 2016-12-21 | 江苏方天电力技术有限公司 | A kind of distributed rapid protection system of intelligent distribution network and guard method |
| CN106712301A (en) * | 2017-02-09 | 2017-05-24 | 山东理工大学 | Fault-tolerant processing method suitable for distributed fault self-recovery of power distribution network |
| CN211880175U (en) * | 2020-04-28 | 2020-11-06 | 上海道博电气有限公司 | Intelligent distributed feeder device based on 5G |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111509679A (en) * | 2020-04-09 | 2020-08-07 | 陕西省地方电力(集团)有限公司延安供电分公司 | Cloud computing distribution network level difference protection system and method based on 5G |
| CN111509679B (en) * | 2020-04-09 | 2022-05-03 | 陕西省地方电力(集团)有限公司延安供电分公司 | Cloud computing distribution network level difference protection system and method based on 5G |
| CN111864901A (en) * | 2020-06-30 | 2020-10-30 | 国网江苏省电力有限公司南京供电分公司 | Distributed FA and main station FA cooperative control method capable of adapting to communication time delay |
| CN112311090A (en) * | 2020-09-29 | 2021-02-02 | 国网安徽省电力有限公司 | Distributed fault recovery method and system for ring distribution network adapting to 5G communication network |
| CN114062858A (en) * | 2021-10-26 | 2022-02-18 | 西安理工大学 | Fault identification and detection system for 5G technology distribution network equipment |
| CN114062858B (en) * | 2021-10-26 | 2024-01-30 | 西安理工大学 | Fault identification and detection system for 5G technology distribution network equipment |
| CN114336545A (en) * | 2021-12-15 | 2022-04-12 | 北京科锐配电自动化股份有限公司 | Distributed protection method and medium with adaptive communication rate capability |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110867838A (en) | Distribution network fault processing method based on 5G communication technology | |
| EP2308149B1 (en) | Feeder automation system and method for operating the same | |
| CN112165090A (en) | Cooperative self-healing system and method | |
| CN111786364B (en) | Distributed-based complex power distribution network fault rapid self-healing control method and system | |
| CN211880174U (en) | Self-adaptive differential protection device based on 5G wireless communication | |
| CN107612148B (en) | Distribution network overhead line fault self-healing method and system | |
| CN109004631B (en) | Network-based power distribution network self-adaptive backup protection control method | |
| CN112290518A (en) | Intelligent distributed feeder protection method and system based on 5G communication | |
| CN113258545B (en) | In-situ feeder automation method and system based on multi-stage time step difference protection | |
| CN112821560B (en) | Distributed self-healing protection method for overhead line distribution network | |
| CN110165639B (en) | Method for automatically switching working modes of power distribution terminal | |
| CN110932395B (en) | Communication system of low-voltage intelligent spare power automatic switching | |
| CN109510192B (en) | Power distribution network and self-healing method thereof | |
| CN113013851B (en) | Distributed intelligent power distribution automation system | |
| CN107611939B (en) | Regional power supply looped network fault quick isolation and load transfer method | |
| CN114189045A (en) | Intelligent distributed FA communication fault-tolerant control method based on wireless communication | |
| CN112271711A (en) | Distributed fault protection method and device for transformer substation | |
| CN114726104A (en) | Intelligent distributed feeder automation implementation method based on 5G communication | |
| CN108493928B (en) | Distributed feeder automation distribution line topology ad hoc network method | |
| CN110867960B (en) | Power supply recovery protection method suitable for distributed feeder automation power distribution terminal | |
| CN114362374B (en) | Method and system for preventing contact switch from being switched on after active load shedding of distribution network | |
| CN113572258B (en) | Distributed FA transfer method, system and storage medium considering line carrying capacity | |
| CN110571771B (en) | Novel self-adaptive power distribution automation fault judgment isolation mode method | |
| CN115473339A (en) | Self-adaptive distribution network distributed feeder automation method and system | |
| CN116317143B (en) | Self-healing distribution network automation system and method integrating 5G short-slice communication private network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200306 |