CN108234623B - Automatic balance management method for data acquisition link of distribution network master station - Google Patents
Automatic balance management method for data acquisition link of distribution network master station Download PDFInfo
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- CN108234623B CN108234623B CN201711469903.4A CN201711469903A CN108234623B CN 108234623 B CN108234623 B CN 108234623B CN 201711469903 A CN201711469903 A CN 201711469903A CN 108234623 B CN108234623 B CN 108234623B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1004—Server selection for load balancing
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- 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
- H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
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- 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
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0663—Performing the actions predefined by failover planning, e.g. switching to standby network elements
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- 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
- H04L41/08—Configuration management of networks or network elements
- H04L41/0893—Assignment of logical groups to network elements
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- 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
- H04L47/12—Avoiding congestion; Recovering from congestion
- H04L47/125—Avoiding congestion; Recovering from congestion by balancing the load, e.g. traffic engineering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1034—Reaction to server failures by a load balancer
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Abstract
A distribution network main station data acquisition link automatic equalization management method comprises an intra-area acquisition strategy and an inter-area standby strategy; and (3) intra-area acquisition strategy: automatically and evenly distributing the number of the connection terminals of the acquisition servers according to the number of the acquisition servers in each acquisition area and the number of the terminals for remote communication; the acquisition servers in the interval are mutually main and standby servers; the interval standby strategy comprises the following steps: when a certain acquisition area fails to perform normal acquisition work, other acquisition areas share the acquisition tasks of the failed acquisition area in a balanced manner. The invention carries out balanced distribution on the load, greatly improves the reliability of the system and utilizes hardware resources to the maximum extent; the channel and the terminal are distributed, the policy service of automatic operation is provided, the channel is not required to be reconfigured manually, and the method is safe and efficient.
Description
Technical Field
The invention relates to an automatic balance management system of a data acquisition link, in particular to an automatic balance management method of a data acquisition link of a distribution network main station.
Background
The reliability of the operation of the main station system needs to be realized by the mutual switching of the main server and the standby server, and in the automatic management system, the acquisition server plays a role of a bridge after starting and stopping. The acquisition server receives the acquisition signal, and transmits the acquisition signal to the background system through the network after simple processing.
The basic tasks of the acquisition server are information exchange, command transmission, protocol organization and interpretation, channel encoding and decoding, and reasonable allocation of acquisition resources, and simultaneously, the functions of observable and controllable information flow, namely message monitoring and storage, interface management maintenance and the like, are realized.
The acquisition server enables the processing of each channel to have higher concurrent execution efficiency, and the requirements of the current system are met. Because each channel has respective specification and processing method, the information processing among the channels cannot interfere with each other, and the normal work of other channels cannot be influenced by the information processing fault of one channel.
Disclosure of Invention
The invention aims to provide an automatic balance management method for a data acquisition link of a distribution network master station.
The purpose of the invention can be realized by designing an automatic balance management method for the data acquisition link of the distribution network main station, which comprises an intra-area acquisition strategy and an interval standby strategy;
and (3) intra-area acquisition strategy: automatically and evenly distributing the number of the connection terminals of the acquisition servers according to the number of the acquisition servers in each acquisition area and the number of the terminals for remote communication; the acquisition servers in the interval are mutually main and standby servers; in the intra-area acquisition strategy, a plurality of channel terminals are divided into a link group, and initialized allocation is carried out by taking the link group as a unit; when different acquisition servers are switched, silent time and connection trying times exist, so that the stability of the system when the acquisition servers are switched is ensured;
the interval standby strategy comprises the following steps: when a certain acquisition area fails and normal acquisition work cannot be carried out, other acquisition areas share acquisition tasks of the failed acquisition area in a balanced manner; the server periodically counts the terminal on-line rate, when the terminal on-line rate does not meet the set requirement, the system can judge that the acquisition area is in failure, and then the acquisition tasks of the acquisition area are distributed to other acquisition areas.
Further, in the formula for calculating the total number of link groups, N ═ C/100] +1, where N is the total number of link groups to be designed, C is the total number of channels, and 100 channel terminals are divided into one link group.
Further, after the link is interrupted, the original acquisition server automatically reconnects the communication terminal, if the connection fails, the silent time of 5-20 seconds is provided, and then the original acquisition server reconnects for 3 times;
when the original acquisition server fails to be reconnected for three times, a switching signal is sent to the other acquisition server to inform the other acquisition server of the connection of the communication terminal, and similarly, when the other acquisition server fails to be connected, the silent time of 5-20 seconds is also provided, and then the other acquisition server is reconnected for 3 times;
when another acquisition server fails to be reconnected for 3 times, sending a switching signal to the original acquisition server to inform the original acquisition server of the connection of the communication terminal, if the original acquisition server fails to be connected, similarly having a silent time of 5-20 seconds, and then reconnecting for 3 times;
the connection is switched repeatedly until the connection is normal.
Further, if the online rate of the terminal in one acquisition area is 0 and the terminal is kept for 20-60 minutes, the server sends a signal for taking over a channel of the fault area to other acquisition servers; other normally working acquisition areas can equally undertake the acquisition work of the channel signals of the fault acquisition area
The invention adopts the mode of collecting in the interval, carries out balanced distribution on the load, greatly improves the reliability of the system and utilizes hardware resources to the maximum extent. In addition, the interval acquisition servers are mutually main and standby machines, and no independent standby server is required to be equipped, so that the investment of the standby server is saved. Meanwhile, the whole collection area is divided into a plurality of areas, so that the inspection and maintenance are more convenient. The invention distributes the channels and the terminals according to a specific algorithm, has the policy service of automatic operation, does not need to manually reconfigure the channels, and is safe and efficient.
Drawings
Fig. 1 is a flow chart of switching between main and standby acquisition servers in a region according to a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of the structure of an intra-area acquisition system according to a preferred embodiment of the present invention;
FIG. 3 is a flow chart of an implementation of a region acquisition standby policy according to a preferred embodiment of the present invention;
FIG. 4 is a diagram illustrating a structure of a bin collection system according to a preferred embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the following examples.
An automatic balance management method for a data acquisition link of a power distribution main station has two main strategies and performs two different automatic control and regulation functions.
And (4) acquiring strategies in the region. And the number of the connection terminals of the acquisition servers is automatically and evenly distributed according to the configuration number of the acquisition servers in the area and the number of the remote communication terminals by the acquisition strategy in the area without manual intervention.
In order to manage and monitor the communication terminal and the whole acquisition process, a concept of link group is introduced. In the invention, 100 channel terminals are divided into a link group, and initialization allocation is carried out by taking the link group as a unit. Assuming that the total number of channels is C, the total number N of link groups to be designed can be expressed by the following formula:
N＝[C/100]+1
where [ C/100] represents the integer part of the total number of channel terminals divided by 100, and may also be represented by INT [ C/100 ]. The following is a description with specific examples:
450 channels are accessed in a certain acquisition area, and the acquisition area adopts dual-computer configuration and initialization configuration. The required 5 link sets can be calculated according to the above formula. Since 100 channels are 1 link group, the following division can be made:
no.1-No.100, link group 1, No.101-No.200, link group 2, link group 1, 2 are in machine A;
no.201-No.300, Link group 3, No.301-No.400, Link group 4, No.401-No.450, Link group 5, Link groups 3, 4, 5, on machine B;
if the acquisition area adopts a multi-machine configuration mode, the following division can be performed according to the same principle: no.1-No.100, link group 1, No.101-No.200, link group 2, and so on;
the invention adopts the mode that the servers in the acquisition area are mutually the main machines and the standby machines, thereby saving the investment of the standby servers. According to specific conditions, two servers in the interval are switched to work and are mutually master and standby. The previous main/standby service acquisition switching is too frequent, which can cause the instability of the system. The invention is thus described with the following modifications in conjunction with the accompanying drawings:
as shown in fig. 1 and 2, after the link is interrupted, the original acquisition server a automatically reconnects to the communication terminal, if the connection fails, there is a quiet time of 5-20 seconds, and then reconnects for 3 times;
when the acquisition server A fails to be reconnected for three times, a switching signal is sent to the acquisition server B to inform the server B of connecting the communication terminal, and similarly, when the server B fails to be connected, the silent time of 5-20 seconds is provided, and then the server B is reconnected for 3 times;
the method comprises the steps that when an acquisition server B fails to be reconnected for 3 times in the same process, a switching signal is sent to an acquisition server A to inform the acquisition server A of connection of a communication terminal, if the acquisition server A fails to be connected, a silent time of 5-20 seconds is provided, and then the acquisition server B is reconnected for 3 times;
the connection is switched repeatedly until the connection is normal. In this embodiment, the silent period is 20 seconds.
The interval standby strategy comprises the following steps:
as shown in fig. 3 and 4, some faults may occur in the daily collection management work. For example, a switch in a certain acquisition area (acquisition area) fails, which results in that all acquisition servers in the acquisition I area cannot be connected to corresponding terminals; or all the acquisition servers in the acquisition I area are down due to power supply faults, such as sudden power failure and the like; the invention is designed aiming at the situation as follows:
the SCADA server can periodically count the terminal online rate, and if the terminal online rate in one acquisition area is 0 and is kept for 20-60 minutes, the SCADA server can send signals for taking over a fault area channel to other acquisition servers; other normally working acquisition areas can equally undertake the acquisition work of the channel signals of the fault acquisition area (acquisition I area).
In the invention, 100 channels are taken as 1 link group, and all link groups in a fault acquisition area are alternately taken over by servers in other acquisition areas; and balancing the load of the whole link. The specific allocation work is illustrated by the following example:
and 3 acquisition areas are arranged in a certain area, 5 acquisition servers are respectively arranged in the acquisition II area and the acquisition III area, and the acquisition I area is accessed into 450 channels. In the acquisition I area, all acquisition servers in the acquisition I area cannot be connected to corresponding terminals due to switch faults, or all acquisition servers in the acquisition I area are down due to sudden power failure. And the SCADA server counts that the on-line rate of the terminal in the acquisition area exceeds more than 30 minutes and is 0, so that the SCADA server sends work for taking over the channel signal of the acquisition area I to the acquisition area II and the acquisition area III.
As the acquisition I area is accessed to 450 channels in total, 5 link groups in total can be obtained by calculation according to a formula. Because there are 5 acquisition servers outside the region, each acquisition server outside the region will add a new link group to balance the acquisition of channel signals in the acquisition I region. In the invention, if the whole acquisition system only has one acquisition area which can work normally, in the extreme case, the acquisition area can be used for acquiring tasks of all communication terminals.
The method mainly adopts two strategies of intra-area acquisition and interval standby to carry out automatic balanced management work on the data acquisition link of the distribution network main station. The intra-area collection and load configuration balance enable the reliability of the whole system to be higher, and hardware resources are utilized to the maximum extent. The invention adopts the way that the interval acquisition servers are mutually active and standby, avoids the operation of reconfiguring the standby server and saves the investment of the standby server. Meanwhile, the system is convenient to maintain, the strategy service is completely and automatically operated, a channel is not required to be reconfigured manually, a series of problems caused by manual operation are avoided, and the system can be operated safely and efficiently.
Claims (4)
1. A distribution network main station data acquisition link automatic equalization management method is characterized in that: the method comprises an intra-area acquisition strategy and an inter-area standby strategy;
and (3) intra-area acquisition strategy: automatically and evenly distributing the number of the connection terminals of the acquisition servers according to the number of the acquisition servers in each acquisition area and the number of the terminals for remote communication; the acquisition servers in the interval are mutually main and standby servers; in the intra-area acquisition strategy, a plurality of channel terminals are divided into a link group, and initialized allocation is carried out by taking the link group as a unit; when different acquisition servers are switched, silent time and connection trying times exist, so that the stability of the system when the acquisition servers are switched is ensured;
the interval standby strategy comprises the following steps: when a certain acquisition area fails and normal acquisition work cannot be carried out, other acquisition areas share acquisition tasks of the failed acquisition area in a balanced manner; the server periodically counts the terminal on-line rate, when the terminal on-line rate does not meet the set requirement, the system can judge that the acquisition area is in failure, and then the acquisition tasks of the acquisition area are distributed to other acquisition areas.
2. The automatic equalization management method for the data acquisition link of the distribution network master station as recited in claim 1, wherein: and a calculation formula of the total number of the link groups, wherein N is [ C/100] +1, where N is the total number of the link groups required to be designed, C is the total number of channels, and 100 channel terminals are divided into one link group.
3. The automatic equalization management method for the data acquisition link of the distribution network master station as recited in claim 1, wherein: after the link is interrupted, the original acquisition server automatically reconnects the communication terminal, if the connection fails, the silent time of 5-20 seconds exists, and then the original acquisition server reconnects for 3 times;
when the original acquisition server fails to be reconnected for three times, a switching signal is sent to the other acquisition server to inform the other acquisition server of the connection of the communication terminal, and similarly, when the other acquisition server fails to be connected, the silent time of 5-20 seconds is also provided, and then the other acquisition server is reconnected for 3 times;
when another acquisition server fails to be reconnected for 3 times, sending a switching signal to the original acquisition server to inform the original acquisition server of the connection of the communication terminal, if the original acquisition server fails to be connected, similarly having a silent time of 5-20 seconds, and then reconnecting for 3 times;
the connection is switched repeatedly until the connection is normal.
4. The automatic equalization management method for the data acquisition link of the distribution network master station as recited in claim 1, wherein: if the online rate of the terminal in one acquisition area is 0 and the terminal is kept for 20-60 minutes, the server sends a signal for taking over a channel of the fault area to other acquisition servers; other normally working acquisition areas can equally bear the acquisition work of the channel signals of the fault acquisition area.
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| CN113467955A (en) * | 2021-07-28 | 2021-10-01 | 国电南京自动化股份有限公司 | Intelligent distribution method and system for data acquisition link of distribution network master station |
| CN116720645A (en) * | 2022-10-21 | 2023-09-08 | 荣耀终端有限公司 | Task distribution method, distribution equipment and task distribution system |
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| WO2015027484A1 (en) * | 2013-08-30 | 2015-03-05 | Accenture Global Services Limited | System, method and apparatuses for distribution network reconfiguration and a tangible computer readable medium |
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| CN101873005B (en) * | 2010-06-17 | 2012-11-28 | 深圳市科陆电子科技股份有限公司 | Method for realizing balanced acquisition of electric energy |
| KR20120018989A (en) * | 2010-08-24 | 2012-03-06 | 에스케이 텔레콤주식회사 | System and method for load balancing in collecting information environment |
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Effective date of registration: 20230727 Address after: 518000 No.13, Keji North 1st Road, North District, high tech Industrial Park, Nanshan District, Shenzhen City, Guangdong Province Patentee after: CYG SUNRI Co.,Ltd. Patentee after: Changyuan Shenrui Energy Technology Co.,Ltd. Address before: 518057 6, No. 3 Langshan Road, North Nanshan District high tech Industrial Park, Shenzhen, Guangdong Patentee before: CYG SUNRI Co.,Ltd. |