CN111970093B - Intelligent distributed FA processing method under abnormal communication condition - Google Patents
Intelligent distributed FA processing method under abnormal communication condition Download PDFInfo
- Publication number
- CN111970093B CN111970093B CN202010829993.9A CN202010829993A CN111970093B CN 111970093 B CN111970093 B CN 111970093B CN 202010829993 A CN202010829993 A CN 202010829993A CN 111970093 B CN111970093 B CN 111970093B
- Authority
- CN
- China
- Prior art keywords
- message
- distribution terminal
- power distribution
- ftu
- communication
- 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.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0823—Errors, e.g. transmission errors
- H04L43/0829—Packet loss
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0852—Delays
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/32—Flow control; Congestion control by discarding or delaying data units, e.g. packets or frames
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Environmental & Geological Engineering (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention relates to an intelligent distributed FA processing method under the condition of communication abnormality. The invention can automatically match different communication quality, thereby meeting the intelligent distributed FA fault processing requirement based on wireless communication, and has the following advantages: according to the invention, through the response waiting time of communication quality control, the receiving party can receive the fault information message under the condition of communication delay or packet loss, and the normal operation of the intelligent distributed FA is ensured; the invention adopts the method of duplicate name discarding to process the condition of multiple communication packets, and does not send response messages, thereby avoiding message confusion under the condition of abnormal communication and reducing unnecessary communication consumption.
Description
Technical Field
The invention relates to an intelligent distributed FA communication method.
Background
The intelligent distributed FA (Feeder Automation ) refers to that fault information is exchanged among distribution electric terminals through a peer-to-peer communication technology when faults occur, protection control decision is made, and fault region isolation and non-fault region power restoration are completed rapidly. The intelligent distributed FA has no need of the time sequence matching problem of the traditional voltage time type protection, can avoid the problems of communication congestion and the like caused by the centralized protection of the master station, and has good development prospect in a power distribution automation system.
The peer-to-peer communication of the intelligent distributed FA puts high demands on communication media, and currently, an optical fiber communication mode based on EPON or industrial ethernet technology is mainly adopted, and special optical cable channels need to be paved, and the paving cost is high, so that the method is difficult to implement for old urban areas or old line reconstruction projects.
The wireless communication is used for replacing optical fiber communication in a power distribution network step by step due to the advantages of simple and flexible networking mode, convenient deployment and the like, and mainly comprises LORA, 433M, 3G/4G and the like. But the wireless communication is different from the wired network of the optical fiber communication, the channel stability is poor, the transmission reliability is low, the communication quality is closely related to the communication environment, and abnormal conditions such as communication delay, communication multi-packet or packet loss can possibly occur in the communication process, so that the application of the wireless communication in the intelligent distributed FA field is restricted.
Disclosure of Invention
The invention aims to solve the technical problems that: in the intelligent distributed FA fault processing process, the wireless communication mode may have communication delay, packet loss and communication multi-packet conditions.
In order to solve the technical problem, the technical scheme of the invention provides an intelligent distributed FA processing method under the condition of abnormal communication, which is characterized by comprising the following steps:
in the process of distributing power by N distribution terminals FTU 1 ,…,FTU N The circuit is composed of:
when the line normally operates, the nth power distribution terminal FTU n Timing and adjacent (n+1) th distribution terminal FTU n+1 Sending topology message and receiving (n+1) th power distribution terminal FTU n+1 Feedback response message, n=1, …, N-1; every time topology message is sent and response message is received, an nth power distribution terminal FTU n To the (n+1) th power distribution terminal FTU within a certain response waiting time length n+1 S frame topology message is sent, and (n+1) th power distribution terminal FTU n+1 FTU to nth power distribution terminal n Feeding back R frame reply message to determine communication quality Q, and increasing or decreasing the reply waiting time length according to communication quality Q, if the reply waiting time length is increased to maximum waiting time T max Consider the (n+1) th power distribution terminal FTU n+1 Communication interruption occurs, and nth power distribution terminal FTU n Sending a communication interrupt message to other power distribution terminals of the line, and performing corresponding processing of communication interrupt by the intelligent distributed FA;
FTU when nth power distribution terminal n And (n+1) th power distribution terminal FTU n+1 When the line between them fails, the (n-1) th distribution terminal FTU n-1 Upon detection of the fault, n=2, …, N-1, the (N-1) th power distribution terminal FTU n-1 Sending the fault message to the adjacent nth power distribution terminal FTU n (n-1) th power distribution terminal FTU n-1 Waiting for an nth power distribution terminal FTU based on a response latency determined during normal operation n If the response message is larger than the response waiting time, the fault message is retransmitted, so that the fault information exchange between the switches under the condition of communication delay or packet loss is ensured.
Preferably, the communication quality q=r/S.
Preferably, when the kth sending topology message and receiving response message is set, the nth power distribution terminal FTU n At the response waiting time T k Inward (n+1) th power distributionTerminal FTU n+1 S frame topology message is sent, and (n+1) th power distribution terminal FTU n+1 FTU to nth power distribution terminal n And feeding back an R frame response message, and calculating to obtain the communication quality Q:
if Q min <Q<Q max T is then k+1 ＝T k ，T k+1 For the (k+1) th time of sending topology message and response waiting time when receiving response message, Q min For the preset minimum value of communication quality, Q max Is a preset maximum value of communication quality;
if Q>Q max The method comprises the following steps:
if Q<Q min The method comprises the following steps:
T k+1 ＝(100％+A％)×T k
wherein A is<100，T min Is the minimum waiting time.
Preferably, the distribution terminal serving as the sender lists all messages in the system, gives an independent ID number to each message, records the ID number of the currently received message after receiving one message as the distribution terminal of the receiver, and if the same message is received by the current receiver within a period of time, the distribution terminal of the receiver selects to discard and does not feed back a response message to the sender.
The invention can automatically match different communication quality, thereby meeting the intelligent distributed FA fault processing requirement based on wireless communication, and has the following advantages:
1. according to the invention, through the response waiting time of communication quality control, the receiving party can receive the fault information message under the condition of communication delay or packet loss, and the normal operation of the intelligent distributed FA is ensured;
2. the invention adopts the method of duplicate name discarding to process the condition of multiple communication packets, and does not send response messages, thereby avoiding message confusion under the condition of abnormal communication and reducing unnecessary communication consumption.
Drawings
FIG. 1 is a schematic diagram of a circuit topology;
fig. 2 is a state transition diagram of the response waiting time T;
fig. 3 is a flow chart of multi-packet processing.
Detailed Description
The invention will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents are intended to fall within the scope of the claims appended hereto.
The invention is further illustrated by way of example with a circuit consisting of six switches KG1 to KG6 as shown in fig. 1:
the intelligent distributed FA processing method under the abnormal communication condition comprises communication delay/packet loss processing and communication packet loss processing, and the method based on combination of application layer protocol control and fault processing flow is adopted to process the abnormal communication delay and packet loss rate.
(1) Communication delay and packet loss processing
In order to maintain the communication connection between the line switches during normal operation of the line, each switch will send topology messages to the adjacent switches at regular intervals. As shown in fig. 1, the switch KG2 sends a topology message to the switch KG3 at regular time, and the switch KG3 feeds back a response message to the switch KG2 after receiving the topology message. Assuming that, in a certain response waiting time T, the switch KG2 sends an S frame topology message to the switch KG3, and the switch KG2 receives an R frame response message fed back by the switch KG3, a calculation formula of a communication quality Q between the switch KG2 and the switch KG3 is shown in the following formula (1):
Q＝R/S (1)
in the formula (1), Q is more than or equal to 0 and less than or equal to 1; the size of the S parameter may be selected by the communication system itself, and is used to adjust the sensitivity of the system to the communication quality, typically s=20.
The value of the response waiting time T is updated in real time with the change of the communication quality Q. Setting the maximum value Q of the communication quality Q max And minimum value Q min When the communication quality Q is smaller than the minimum value Q min Or greater than maximum value Q max Dynamically updating the response waiting time T:
1) If Q min <Q<Q max The response waiting time T is unchanged;
2) If Q>Q max The answer waiting time T is reduced by 10%;
3) If Q<Q min The answer waiting time T is increased by 10%.
When the response waiting time T is reduced to be less than the minimum waiting time T min Setting the response waiting time T to the minimum waiting time T min . When the response waiting time T increases to be greater than the maximum waiting time T max When the intelligent distributed FA processes the communication interruption, the switch KG3 is considered to have the communication interruption, the switch KG2 sends a communication interruption message to other switches of the line, and the intelligent distributed FA processes the communication interruption correspondingly. The state transition of the response waiting time T is shown in fig. 2.
When the circuit fails, if a fault occurs between the switch KG3 and the switch KG4, the switch KG2 detects the fault, the switch KG2 sends a fault message to the adjacent switch KG3, the switch KG2 waits for the response message of the switch KG3 according to the response waiting time T determined during normal operation, and if the response waiting time T is larger than the response waiting time T, the fault message is retransmitted, so that the fault information exchange between the switches under the conditions of communication delay or packet loss is ensured.
(2) Communication multipacket processing
Aiming at the problem of receiving repeated messages in wireless communication, a processing method of 'duplicate name discarding' is adopted. The specific treatment method comprises the following steps: the switch as the sender lists all messages in the system, and gives each message an independent ID number. When the switch as the receiver receives a message, the ID number of the message is recorded in the device, if the current receiver receives the same message in a period of time, the message is selected to be discarded and the response message is not fed back to the sender, and the multi-packet processing flow is shown in figure 3.
Claims (3)
1. The intelligent distributed FA processing method under the condition of abnormal communication is characterized by comprising the following steps:
in the process of distributing power by N distribution terminals FTU 1 ,…,FTU N The circuit is composed of:
when the line normally operates, the nth power distribution terminal FTU n Timing and adjacent (n+1) th distribution terminal FTU n+1 Sending topology message and receiving (n+1) th power distribution terminal FTU n+1 Feedback response message, n=1, …, N-1; every time topology message is sent and response message is received, an nth power distribution terminal FTU n To the (n+1) th power distribution terminal FTU within a certain response waiting time length n+1 S frame topology message is sent, and (n+1) th power distribution terminal FTU n+1 FTU to nth power distribution terminal n Feeding back R frame reply message to determine communication quality Q, and increasing or decreasing the reply waiting time length according to communication quality Q, if the reply waiting time length is increased to maximum waiting time T max Consider the (n+1) th power distribution terminal FTU n+1 Communication interruption occurs, and nth power distribution terminal FTU n Sending a communication interrupt message to other power distribution terminals of the line, and performing corresponding processing of communication interrupt by the intelligent distributed FA;
FTU when nth power distribution terminal n And (n+1) th power distribution terminal FTU n+1 When the line between them fails, the (n-1) th distribution terminal FTU n-1 Upon detection of the fault, n=2, …, N-1, the (N-1) th power distribution terminal FTU n-1 Sending the fault message to the adjacent nth power distribution terminal FTU n (n-1) th power distribution terminal FTU n-1 Waiting for an nth power distribution terminal FTU based on a response latency determined during normal operation n If the response message is larger than the response waiting time, retransmitting the fault message if the response message is not received, so as to ensure the fault information exchange between the switches under the condition of communication delay or packet loss;
and the distribution terminal serving as a sender lists all messages in the system, independent ID numbers are given to each message, the distribution terminal serving as a receiver records the ID number of the currently received message after receiving one message, and if the same message is received by the current receiver within a period of time, the message is selected to be discarded and a response message is not fed back to the sender.
2. The intelligent distributed FA processing method in the event of a communication anomaly of claim 1, wherein the communication quality Q = R/S.
3. The intelligent distributed FA processing method in the case of abnormal communication as set forth in claim 2, wherein the nth power distribution terminal FTU is configured to send the topology message and receive the response message the kth time n At the response waiting time T k FTU of inward (n+1) th power distribution terminal n+1 S frame topology message is sent, and (n+1) th power distribution terminal FTU n+1 FTU to nth power distribution terminal n And feeding back an R frame response message, and calculating to obtain the communication quality Q:
if Q min <Q<Q max T is then k+1 ＝T k ，T k+1 For the (k+1) th time of sending topology message and response waiting time when receiving response message, Q min For the preset minimum value of communication quality, Q max Is a preset maximum value of communication quality;
if Q > Q max The method comprises the following steps:
if Q<Q min The method comprises the following steps:
T k+1 ＝(100％+A％)×T k
wherein A is<100，T min Is the minimum waiting time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010829993.9A CN111970093B (en) | 2020-08-18 | 2020-08-18 | Intelligent distributed FA processing method under abnormal communication condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010829993.9A CN111970093B (en) | 2020-08-18 | 2020-08-18 | Intelligent distributed FA processing method under abnormal communication condition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111970093A CN111970093A (en) | 2020-11-20 |
| CN111970093B true CN111970093B (en) | 2023-06-16 |
Family
ID=73388470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010829993.9A Active CN111970093B (en) | 2020-08-18 | 2020-08-18 | Intelligent distributed FA processing method under abnormal communication condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111970093B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026394A (en) * | 2016-06-17 | 2016-10-12 | 国网江苏省电力公司常州供电公司 | Automated fault information interaction method of distributed feeder |
| CN106790266A (en) * | 2017-02-13 | 2017-05-31 | 云南电网有限责任公司电力科学研究院 | The communication means and device of a kind of intelligent distribution type feeder automation |
| CN106911498A (en) * | 2017-02-08 | 2017-06-30 | 湖北省新能恒达电力工程有限公司 | The method of power distribution network distributed terminal intelligent modeling communication |
| CN107395409A (en) * | 2017-07-14 | 2017-11-24 | 国网山东省电力公司淄博供电公司 | A kind of Electricity Information Network with communication quality monitoring |
| CN108169625A (en) * | 2017-12-28 | 2018-06-15 | 国网江苏省电力有限公司南京供电分公司 | A kind of distribution feed line automatization terminal and distribution line failure localization method |
| CN109787201A (en) * | 2019-02-27 | 2019-05-21 | 南京电研电力自动化股份有限公司 | A kind of fault handling method of the intelligent distributed terminal of multimode based on Internet of Things |
| CN111641265A (en) * | 2020-05-29 | 2020-09-08 | 国网江苏省电力有限公司南京供电分公司 | Distribution network distributed feeder automation terminal and self-adaptive detection method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611086B (en) * | 2012-03-27 | 2015-01-07 | 许继电气股份有限公司 | Centralized protection system and method for region distribution network |
-
2020
- 2020-08-18 CN CN202010829993.9A patent/CN111970093B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026394A (en) * | 2016-06-17 | 2016-10-12 | 国网江苏省电力公司常州供电公司 | Automated fault information interaction method of distributed feeder |
| CN106911498A (en) * | 2017-02-08 | 2017-06-30 | 湖北省新能恒达电力工程有限公司 | The method of power distribution network distributed terminal intelligent modeling communication |
| CN106790266A (en) * | 2017-02-13 | 2017-05-31 | 云南电网有限责任公司电力科学研究院 | The communication means and device of a kind of intelligent distribution type feeder automation |
| CN107395409A (en) * | 2017-07-14 | 2017-11-24 | 国网山东省电力公司淄博供电公司 | A kind of Electricity Information Network with communication quality monitoring |
| CN108169625A (en) * | 2017-12-28 | 2018-06-15 | 国网江苏省电力有限公司南京供电分公司 | A kind of distribution feed line automatization terminal and distribution line failure localization method |
| CN109787201A (en) * | 2019-02-27 | 2019-05-21 | 南京电研电力自动化股份有限公司 | A kind of fault handling method of the intelligent distributed terminal of multimode based on Internet of Things |
| CN111641265A (en) * | 2020-05-29 | 2020-09-08 | 国网江苏省电力有限公司南京供电分公司 | Distribution network distributed feeder automation terminal and self-adaptive detection method thereof |
Non-Patent Citations (3)
| Title |
|---|
| Automated Fault Location and Isolation in Distribution Grids With Distributed Control and Unreliable Communication;Neelabh Kashyap;《IEEE Transactions on Industrial Electronics》;20141231;第62卷(第4期);2612-2619 * |
| 基于通信质量检测的自适应分布式智能馈线自动化;张明 等;《南方电网技术》;20171130;第11卷(第11期);61-67 * |
| 智能配电网分布式拓扑识别与应用方法;武奕彤;《电力***保护与控制》;20190816;第47卷(第16期);136-142 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111970093A (en) | 2020-11-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100417141C (en) | Group broadcasting business realizing method | |
| CN111641265B (en) | Distribution network distributed feeder automation terminal and self-adaptive detection method thereof | |
| JP2000125277A (en) | Multicast communication device and multicast communicating method | |
| CN107995051A (en) | Secondary equipment of intelligent converting station visualized O＆M module information interactive system and method | |
| CN113194432A (en) | Network communication method between intelligent distributed feeder automation terminals | |
| CN108551356A (en) | A kind of method and system that centralized meter-reading system power failure reports | |
| CN110557232B (en) | Communication mode selection method of dual-mode communication network | |
| CN111970093B (en) | Intelligent distributed FA processing method under abnormal communication condition | |
| CN112286041B (en) | Switching method and switching control system for electrical equipment redundancy monitoring device | |
| CN111884681B (en) | Intelligent distributed type rapid FA communication method based on power line carrier | |
| CN101997724A (en) | Method and device for updating multicast forwarding entries | |
| CN109905332A (en) | Packet method and system are melted in a kind of data subpackage based on multichannel converged communication | |
| CN113131488B (en) | Accurate load shedding system based on power wireless private network and control method thereof | |
| CN112073333B (en) | Intelligent containerized flow storm control method and system based on SONiC development | |
| US6671469B1 (en) | Supervisory apparatus for transmission lines | |
| CN114050655A (en) | Power distribution network self-healing system and method based on 5G communication technology | |
| CN116170120A (en) | GOOSE message redundant transmission system and method | |
| CN111970278B (en) | Intelligent distributed FA communication method based on improved UDP transmission mode | |
| US7533159B1 (en) | Selective flooding in a multicast network | |
| CN105141397A (en) | Method and device for sending selected and confirmed SACK messages | |
| JP3788125B2 (en) | Packet transmission / reception method and apparatus | |
| CN115190088B (en) | Switch probability forwarding method based on software defined network | |
| CN110635839B (en) | Broadcast pruning method and system, and receiving method and device of satellite network | |
| CN102263703A (en) | Method, device and network system for transparently transmitting and multicasting protocol messages | |
| JPS6277733A (en) | Packet length converting system |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |