CN110967598A - Power failure wave recording linkage method and system - Google Patents
Power failure wave recording linkage method and system Download PDFInfo
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- CN110967598A CN110967598A CN201911265891.2A CN201911265891A CN110967598A CN 110967598 A CN110967598 A CN 110967598A CN 201911265891 A CN201911265891 A CN 201911265891A CN 110967598 A CN110967598 A CN 110967598A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention provides a power failure wave recording linkage method and a system, wherein the method comprises the following steps: the method comprises the steps that a plurality of linked power failure wave recording devices are arranged in a multicast communication group, when any power failure wave recording device in the multicast communication group starts wave recording, a linked message is sent to the multicast communication group, and other power failure wave recording devices in the multicast communication group are informed to carry out linked wave recording. The power failure wave recording linkage method and the system have the advantages of high linkage wave recording reliability and low cost.
Description
Technical Field
The invention relates to the field of power failure recording, in particular to a power failure recording linkage method and system.
Background
The power failure recording device is an important component device for power system failure analysis, and is responsible for performing failure analysis in time after a power system fails, searching for a power failure cause, and locating a failure point. Due to the fact that power signals needing to be monitored in areas such as a transformer substation and a power plant are more, the access capacity of a single power failure recording device is limited, the power system is provided with access rules for different elements, and the like, the situation that multiple power failure recording devices run synchronously often exists in the same area. When a certain element fails, often only the power failure recording device to which the element is connected reaches the trigger recording condition to record, and the rest devices may not reach the trigger condition and do not record. Therefore, when advanced analysis such as big data analysis, accident deduction, fault load flow calculation and the like needs to be performed from the perspective of a whole station and a whole plant, information of all power signals at the same time cannot be acquired.
The traditional method is that a starting hard contact signal of each power failure recording device is connected to a remote starting input terminal of each power failure recording device in a hard connecting line mode, when any one power failure recording device reaches a triggering recording condition, a starting relay is closed so that a starting signal is transmitted to other devices, the other devices monitor the hardware signal, and if the hardware signal is closed, the hardware signal is started along with the signal. The field devices are distributed in each independent chamber, the method has the defects that wiring is complicated, a signal repeater is required to be added to enhance a starting signal when the distance is long, and the device needs an independent DI (digital interface) board card to detect the signal, so that the cost of the device is increased.
Disclosure of Invention
The invention aims to provide a power fault recording linkage method and a power fault recording linkage system which are high in linkage recording reliability and low in cost.
The embodiment of the invention provides a power failure wave recording linkage method, which comprises the following steps:
the method comprises the steps that a plurality of linked power failure wave recording devices are arranged in a multicast communication group, when any power failure wave recording device in the multicast communication group starts wave recording, a linked message is sent to the multicast communication group, and other power failure wave recording devices in the multicast communication group are informed to carry out linked wave recording.
In the embodiment of the invention, when other power failure wave recording devices in the multicast communication group receive the linkage message, whether the devices are in a wave recording state is judged, if the devices are in the wave recording state, the linkage wave recording request of the linkage message is not responded, if the devices are not in the wave recording state, the validity of the linkage message is checked, if the linkage message is valid, the linkage wave recording request of the linkage message is responded, and wave recording is started, otherwise, the linkage wave recording request of the linkage message is not responded.
In the embodiment of the invention, the linkage message comprises an ID number, a datagram type, wave recording starting time and message sending time of a power failure wave recording device for sending the linkage message.
In the embodiment of the invention, a plurality of linked power failure wave recording devices in the multicast communication group commonly adopt a clock source to acquire time.
In the embodiment of the invention, after other power failure wave recording devices in the multicast communication group start recording, the wave recording data cached in the self cache is backtracked according to the wave recording starting time in the linkage message, so that the wave recording data of a plurality of linkage power failure wave recording devices in the multicast communication group are kept synchronous.
The embodiment of the invention also provides a power failure recording linkage system which comprises a plurality of linked power failure recording devices arranged in one multicast communication group, wherein when any power failure recording device in the multicast communication group starts recording, a linkage message is sent to the multicast communication group to inform other power failure recording devices in the multicast communication group of linkage recording.
Compared with the prior art, in the electric power fault recording linkage method and system, a plurality of linked electric power fault recording devices are arranged in a multicast communication group, when any electric power fault recording device in the multicast communication group starts recording, a linkage message is sent to the multicast communication group to inform other electric power fault recording devices in the multicast communication group of linkage recording, a signal repeater, a hard contact signal line and the like are not needed, the linkage reliability is greatly improved, and the cost for realizing high-level analysis such as large data analysis, accident deduction, fault trend calculation and the like at all stations and all plant angles is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a power failure recording linkage system according to an embodiment of the present invention.
Fig. 2 is a flowchart of sending a linkage message to the multicast communication group after the power failure recorder of the embodiment of the present invention is started.
Fig. 3 is a flowchart of receiving and responding to the linkage message by the power failure recorder according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description of implementations of the invention refers to specific embodiments,
as shown in fig. 1, in the embodiment of the present invention, an electric power fault recording linkage system is provided, which includes a clock source, a communication switch, and a plurality of electric power fault recording devices. The clock source is used for providing uniform reference time for the plurality of power failure wave recording devices. The communication switch is used for arranging the plurality of power failure wave recording devices in a multicast communication group.
It should be noted that the plurality of power failure recording devices are respectively disposed in each area in the power system, and are used for monitoring the power operation condition of each area in real time. During monitoring, the power running condition of a period of time can be stored in a cache of the power failure wave recording device for recording. When the electric power running condition of a certain area is abnormal, the electric power fault recording device of the area starts recording waves, and the electric power running condition of the area is recorded.
It should be further noted that, in the multicast communication group, each power failure recorder communicates by using a multicast technology, and when a power failure recorder in one multicast communication group sends information to a plurality of power failure recorders, only one message data needs to be sent, and the destination address of the data is the multicast communication group address, so that all the power failure recorders belonging to the multicast communication group can receive one sent message data.
As shown in fig. 2, after the power failure recorder is started, the power failure recorder monitors the power system in the area to which the power failure recorder belongs, and when the power running condition of the area is abnormal, the power failure recorder starts recording, and sends a linkage message to the multicast communication group to notify other power failure recorders in the multicast communication group to perform linkage recording. The linkage message comprises an ID number of a power failure wave recording device for sending the linkage message, a datagram type, wave recording starting time and message sending time.
As shown in fig. 3, when receiving the linkage message, other power failure wave recording devices in the multicast communication group first determine whether the devices are in a wave recording state, if the devices are in the wave recording state, the devices do not respond to the linkage wave recording request of the linkage message, if the devices are not in the wave recording state, the validity of the linkage message is checked based on the device linkage white list, the wave recording starting time and the datagram type, if the linkage message is valid, the devices respond to the linkage wave recording request of the linkage message and start wave recording, otherwise, the devices do not respond to the linkage wave recording request of the linkage message.
After other power failure wave recording devices in the multicast communication group start recording, the wave recording data cached in the self cache is subjected to backtracking processing according to the wave recording starting time in the linkage message, so that the starting point of the wave recording time is the wave recording starting time in the linkage message, and the wave recording data of a plurality of linkage power failure wave recording devices in the multicast communication group are kept synchronous. By calling the wave recording of each power failure wave recording device in the multicast communication group, the operation condition of the power system in each area when the power system fails can be obtained, so that high-level analysis such as big data analysis, accident deduction, fault flow calculation and the like can be conveniently carried out on the operation failure of the power system from the angles of all stations and plants.
In summary, in the power failure recording linkage method and system of the present invention, a plurality of linked power failure recording devices are arranged in a multicast communication group, and when any power failure recording device in the multicast communication group starts recording, a linkage message is sent to the multicast communication group to notify other power failure recording devices in the multicast communication group to perform linkage recording, and signal repeaters, hard-contact signal lines, etc. are not needed, so that the reliability of linkage is greatly improved, and the cost for implementing high-level analysis such as large data analysis, accident deduction, and failure load flow calculation at all stations and whole plant angles is reduced.
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 and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A power failure wave recording linkage method is characterized by comprising the following steps:
the method comprises the steps that a plurality of linked power failure wave recording devices are arranged in a multicast communication group, when any power failure wave recording device in the multicast communication group starts wave recording, a linked message is sent to the multicast communication group, and other power failure wave recording devices in the multicast communication group are informed to carry out linked wave recording.
2. The power failure recording linkage method according to claim 1, further comprising:
when receiving the linkage message, other power failure wave recording devices in the multicast communication group judge whether the devices are in a wave recording state, if the devices are in the wave recording state, the linkage wave recording requests of the linkage message are not responded, if the devices are not in the wave recording state, the validity of the linkage message is checked, if the linkage message is valid, the linkage wave recording requests of the linkage message are responded, and wave recording is started, otherwise, the linkage wave recording requests of the linkage message are not responded.
3. The power failure recording linkage method according to claim 2, wherein the linkage message includes an ID number, a datagram type, recording start time, and message transmission time of a power failure recording device that transmits the linkage message.
4. The power failure recording linkage method according to claim 3, wherein a plurality of linked power failure recording devices in the multicast communication group commonly use one clock source to acquire time.
5. The power failure recording linkage method according to claim 4, wherein after the other power failure recording devices in the multicast communication group start recording, the recording data cached in the cache of the other power failure recording devices in the multicast communication group is backtracked according to the recording start time in the linkage message, so that the recording data of the plurality of linked power failure recording devices in the multicast communication group are kept synchronous.
6. The utility model provides an electric power trouble record ripples linked system which characterized in that, including setting up a plurality of linked electric power trouble record ripples device in a multicast communication group, when any electric power trouble record ripples device in the multicast communication group starts the record ripples, send a linkage message to the multicast communication group, inform other electric power trouble record ripples device in the multicast communication group carries out the linkage record ripples.
7. The power failure wave recording linkage system according to claim 6, wherein when receiving the linkage message, other power failure wave recording devices in the multicast communication group first determine whether they are in a wave recording state, if they are already in the wave recording state, they do not respond to the linkage wave recording request of the linkage message, if they are not in the wave recording state, they check the validity of the linkage message, if they are valid, they respond to the linkage wave recording request of the linkage message and start wave recording, otherwise they do not respond to the linkage wave recording request of the linkage message.
8. The power failure recording linkage system according to claim 7, wherein the linkage message includes an ID number of a power failure recording device that transmits the linkage message, a datagram type, a recording start time, and a message transmission time.
9. The power failure recording linkage system according to claim 8, further comprising a clock source, wherein the clock source is commonly used by the plurality of linked power failure recording devices in the multicast communication group to obtain time.
10. The power failure recording linkage system according to claim 9, wherein after the other power failure recording devices in the multicast communication group start recording, the recording data cached in their own cache is processed back according to the recording start time in the linkage message, so that the recording data of the multiple linked power failure recording devices in the multicast communication group are kept synchronized.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112946553A (en) * | 2021-01-29 | 2021-06-11 | 南方电网科学研究院有限责任公司 | Distribution network homonymy terminal online checking method and device |
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