CN110661231B - Data processing method during fault recovery based on master station SOE information processing - Google Patents
Data processing method during fault recovery based on master station SOE information processing Download PDFInfo
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- CN110661231B CN110661231B CN201910976000.8A CN201910976000A CN110661231B CN 110661231 B CN110661231 B CN 110661231B CN 201910976000 A CN201910976000 A CN 201910976000A CN 110661231 B CN110661231 B CN 110661231B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0092—Details of emergency protective circuit arrangements concerning the data processing means, e.g. expert systems, neural networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/28—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 for meshed systems
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- 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
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Abstract
The invention discloses a data processing method during fault recovery based on master station SOE information processing, which comprises the following steps: analyzing network topology, dividing a network architecture of a power distribution network into different sections, and recording switches belonging to the sections into a section switch table; fault location, namely extracting real-time data in a scada library, and judging whether current flowing through a switching node has overcurrent information or not so as to determine a fault position; fault isolation, namely disconnecting the upstream switch and the downstream switch of the positioned fault section and recording the switch disconnection information into a switch suggestion action table; recovering power supply; comparing the actual action record of the switch with the suggested action of the switch after the fault occurs, and if the actual action record of the switch is the same as the suggested action of the switch, the actual action of the switch is correct; if the difference exists, the actual switch action is wrong, and the fault recovery task cannot be completed; the problems that in the prior art, power supply recovery time is long, power supply recovery efficiency is low and the like in the power distribution network fault recovery are solved.
Description
Technical Field
The invention belongs to the technical field of intelligent power distribution networks, and particularly relates to a data processing method during fault recovery based on master station SOE information processing.
Background
With the rapid development of intelligent power distribution networks, feeder automation technology is more and more applied to power distribution networks, and due to the frequent occurrence of line faults, a system master station obtains a large amount of alarm information, a large amount of data is transmitted to a master station platform, so that the workload is increased for scheduling and operation and maintenance personnel, and the fault recovery process becomes long and complicated. With the rise of the smart power grid and the development of communication technology, useful information is extracted for fault recovery by analyzing and processing a large amount of data information of the main station, so that the working efficiency of scheduling and operation and maintenance personnel can be effectively improved.
At present, the SOE information of a master station is complex and various, scheduling operation and maintenance personnel always manually screen useful information for manual analysis, and a recovery path is manually judged, so that the problems of long power supply recovery time, low power supply recovery efficiency and the like exist.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a data processing method during fault recovery based on master station SOE information processing to solve the problems that in the prior art, due to the fact that master station SOE information is complicated and various, scheduling operation and maintenance personnel always manually screen useful information for manual analysis, and recovery paths are manually judged, power supply recovery time is long, power supply recovery efficiency is low and the like in the case of power distribution network fault recovery.
The technical scheme of the invention is as follows:
a data processing method during fault recovery based on master station SOE information processing comprises the following steps:
step 1, analyzing network topology, dividing a network architecture of a power distribution network into different sections, defining two switches as one section, writing the searched section into a section table, and recording the switch to which the section belongs to the section switch table;
step 2, fault location, namely extracting real-time data acquired by a master station in a scada library, judging whether current flowing through a switch node has over-current information or not, determining a fault position by analyzing the over-current information of an upstream switch node and the over-current information of a downstream switch node of a fault point, and recording a fault section, the over-current information of the upstream switch and the over-current information of the downstream switch in a fault section table applied by the master station to form fault location information;
step 3, fault isolation, namely searching a switch information table in the database according to fault positioning information, disconnecting an upstream switch and a downstream switch of a positioned fault section, modifying the state information of the switches in the database to complete fault isolation, and recording switch disconnection information into a switch suggestion action table;
step 4, power supply recovery, namely extracting capacity margins of all lines, calculating the load quantities of all power-off loads at the downstream of a fault point, comparing the load quantities with the capacity margins at the interconnection switch, judging whether the interconnection switch can meet the transferred load quantities when closed, finishing a power supply recovery task if the load quantities meet the transferred load quantities, and recording the interconnection switch closing information to a switch suggestion action table; if the current is not satisfied, selecting another interconnection switch of the power-off area to perform logic judgment again, and recording the closing information of the interconnection switch;
step 5, comparing the actual action condition of the switch collected by the master station after the fault occurs with the action logic of the switch in the switch suggested action table, and if the actual action condition of the switch is completely the same as the action logic of the switch suggested action table, finishing the tasks of fault positioning isolation and recovery; if the difference exists, the actual switch action is wrong, the fault recovery task cannot be completed, and then the action error is judged to occur in a certain stage of positioning, isolation or recovery.
It still includes:
and 6, analyzing the reason of the action error, and determining whether errors occur in the positioning, the isolation and the recovery or not by comparing the sequence of the record in the actual action table and the suggested action of the switch, wherein if the errors occur, the links in which the errors occur are recorded in a result judgment table.
The power distribution network in the step 1 comprises a hand-in-hand single-ring network, a multi-section single-connection network and a section two-connection network architecture, and a connection switch must be arranged in a line.
The division method of the section in the step 1 comprises the following steps: the feeder in the power distribution network is divided into different sections according to the minimum unit formed by combining two switches and circuits between the switches, and the sections are divided by adopting a depth-first algorithm.
The fault positioning method in the step 2 comprises the following steps: and extracting the latest accident total information and the switching action information according to the SOE alarm information provided by the main station to carry out fault positioning, and determining the fault position according to the overcurrent information existing at the upstream of the fault position and the overcurrent information not existing at the downstream.
The SOE alarm information is obtained by adopting a time node screening method.
The invention has the beneficial effects that:
1. the invention adopts a depth-first algorithm to carry out section blocking on the network architecture, and positions the fault section through the over-current information reported by the SOE, thereby shortening the fault positioning time and realizing quick positioning in a short time. On one hand, a large amount of data in the master station SOE table is processed to obtain useful information; on the other hand, the recorded data is processed by the program and recorded in a new table, so that the fault position is more intuitively given, and preparation is made for fault isolation and recovery.
2. The invention combines a series of fault processing processes of network architecture analysis, fault positioning, isolation and recovery and the like to complete the fault recovery processing process from the occurrence of the fault to the maintenance of the line, can obviously improve the efficiency of operation and maintenance personnel for processing the fault and is beneficial to the use of a power grid.
3. The invention adopts the comparison of the switch suggested action and the actual action to obtain the result analysis after the comparison, so that operation and maintenance personnel can determine which fault processing process the action is different from, and fill in the database under application, thereby being beneficial to the operation and maintenance of the power distribution network.
The problem of prior art because the master station SOE information is complicated and various to the distribution network fault recovery, the dispatch operation and maintenance personnel are all the time the artifical useful information of screening carries out manual analysis, and the restoration route is artificial to be judged, and there is the power restoration time long, power restoration efficiency low grade is solved.
Detailed Description
In order to overcome the defects of the prior art, the invention provides a data processing method during fault recovery based on the SOE information processing of a main station. The power distribution network capable of being processed comprises a hand-in-hand single-ring network, a multi-segment single-contact network, a multi-segment two-contact network and other network architectures, a contact switch must be arranged in the circuit, and power supply recovery can be carried out on power-off loads. The feeder in the power distribution network is divided into different sections according to the minimum unit formed by combining two switches and circuits between the switches. And extracting the latest accident total information and the latest switching action information according to the SOE alarm information provided by the main station, and carrying out subsequent fault positioning. The section where the fault is located, and then subsequent fault isolation is performed. The switching states of the upstream switch and the downstream switch of the fault section are changed. The correctness of fault positioning isolation based on the SOE information of the main station is finished, and the judgment of positioning and isolation cannot be influenced by mistake due to the fact that the alarm information transmitted to the main station by communication is transmitted. The running state of each switch can be monitored in real time to obtain overcurrent information. And selecting key SOE information by adopting a time node screening method, and discarding a large amount of redundant information. And when the fault positioning and isolation are completed, the recovery power supply of the non-fault section is met, and the aim of recovering the power failure load as much as possible is fulfilled.
The method comprises the following steps:
a data processing method during fault recovery based on master station SOE information processing comprises the following steps:
step 1, analyzing network topology, dividing a network architecture of a power distribution network into different sections, defining two switches as one section, writing the searched section into a section table, and recording the switch to which the section belongs to the section switch table;
step 2, fault location, namely extracting real-time data acquired by a master station in a scada library, judging whether overcurrent information exists in current flowing through a switch node or not, recording the overcurrent information in an SOE alarm information table, determining a fault position by analyzing the difference between the overcurrent information of an upstream switch node and the overcurrent information of a downstream switch node at a fault point, and recording fault sections, the overcurrent information of the upstream switch and the overcurrent information of the downstream switch in a fault section table applied by the master station to form fault location key information;
step 3, fault isolation, namely searching a switch information table in the database according to fault positioning key information, disconnecting the upstream switch and the downstream switch of the positioned fault section, modifying the state information of the switches in the database, completing fault isolation, and recording switch disconnection information into a switch suggestion action table;
step 4, power supply recovery, namely extracting capacity margins of all lines, calculating the load quantities of all power-off loads at the downstream of a fault point, comparing the load quantities with the capacity margins at the interconnection switch, judging whether the interconnection switch can meet the transferred load quantities when closed, finishing a power supply recovery task if the load quantities meet the transferred load quantities, and recording the interconnection switch closing information to a switch suggestion action table; if the current is not satisfied, selecting another interconnection switch of the power-off area to perform logic judgment again, and recording the closing information of the interconnection switch;
step 5, comparing the actual action condition of the switch collected by the master station after the fault occurs with the action logic of the switch in the switch suggested action table, and if the actual action condition of the switch is completely the same as the action logic of the switch suggested action table, finishing the tasks of fault positioning isolation and recovery; if the difference exists, the actual switch action is wrong, the fault recovery task cannot be completed, and then the action error is judged to occur in a certain stage of positioning, isolation or recovery.
It still includes:
and 6, analyzing the reason of the action error, determining whether errors occur in positioning, isolation and recovery or not by comparing the sequence of the record and the suggested action of the switch in the actual action table, judging whether the FA system is interfered or not, and recording the error occurring link into a result judgment table if the error occurs.
The power distribution network in the step 1 comprises a hand-in-hand single-ring network, a multi-section single-connection network and a section two-connection network architecture, and a connection switch must be arranged in a line.
The division method of the section in the step 1 comprises the following steps: the feeder in the power distribution network is divided into different sections according to the minimum unit formed by combining two switches and circuits between the switches, and the sections are divided by adopting a depth-first algorithm.
The fault positioning method in the step 2 comprises the following steps: and extracting the latest accident total information and the switching action information according to the SOE alarm information provided by the main station to carry out fault positioning, and determining the fault position according to the overcurrent information existing at the upstream of the fault position and the overcurrent information not existing at the downstream.
The interference forms of the factors influencing the FA reliability in the step 6 mainly include the following types:
1. due to topology change of a communication system, communication channel failure between the FTU and the system, and failure of the FTU or a communication module thereof, communication of part of FA equipment is abnormal;
2, communication faults occur in the FA process, and the consistency of the field information and the information in the FA system is influenced;
3. switch refusing operation occurs in the fault isolation stage;
4. failure recovery stage of outlet circuit breaker or interconnection switch
5. Adjusting the operation mode, and switching the interconnection switch;
6. power failure during maintenance;
7. the transfer capacity is not sufficient.
The FA system, in the face of these interfering inputs, may perform as follows:
1. the system continues to provide FA services, but may make erroneous decisions;
2. the system monitors the existence of interference and stops FA service in a limited area;
3. when the system monitors that the interference exists, all the areas stop the FA service;
4. the system runs comprehensively, and can make a reasonable decision, reasonably enlarge the isolation range and restore the operation of the non-fault area as much as possible.
The SOE alarm information is obtained by adopting a time node screening method.
In summary, the invention uses the data processing method during fault recovery based on the master station SOE information processing, adopts the depth-first algorithm and the master station data analysis, and performs the secondary information processing on the real-time monitoring information of the power distribution network by combining fault location and fault isolation, thereby completing the long-time fault recovery process. The invention can effectively realize fault location and power supply recovery, gives action logic of fault recovery, facilitates remote or local operation of operation and maintenance scheduling personnel, promotes efficient application of the master station alarm system in the power distribution network, and improves operation and maintenance efficiency.
Claims (6)
1. A data processing method during fault recovery based on master station SOE information processing comprises the following steps:
step 1, analyzing network topology, dividing a network architecture of a power distribution network into different sections, defining two switches as one section, writing the searched section into a section table, and recording the switch to which the section belongs to the section switch table;
step 2, fault location, namely extracting real-time data acquired by a master station in a scada library, judging whether current flowing through a switch node has over-current information or not, determining a fault position by analyzing the over-current information of an upstream switch node and the over-current information of a downstream switch node of a fault point, and recording a fault section, the over-current information of the upstream switch and the over-current information of the downstream switch in a fault section table applied by the master station to form fault location information;
step 3, fault isolation, namely searching a switch information table in the database according to fault positioning information, disconnecting an upstream switch and a downstream switch of a positioned fault section, modifying the state information of the switches in the database to complete fault isolation, and recording switch disconnection information into a switch suggestion action table;
step 4, power supply recovery, namely extracting capacity margins of all lines, calculating the load quantities of all power-off loads at the downstream of a fault point, comparing the load quantities with the capacity margins at the interconnection switch, judging whether the interconnection switch can meet the transferred load quantities when closed, finishing a power supply recovery task if the load quantities meet the transferred load quantities, and recording the interconnection switch closing information to a switch suggestion action table; if the current is not satisfied, selecting another interconnection switch of the power-off area to perform logic judgment again, and recording the closing information of the interconnection switch;
step 5, comparing the actual action condition of the switch collected by the master station after the fault occurs with the action logic of the switch in the switch suggested action table, and if the actual action condition of the switch is completely the same as the action logic of the switch suggested action table, finishing the tasks of fault positioning isolation and recovery; if the difference exists, the actual switch action is wrong, the fault recovery task cannot be completed, and then the action error is judged to occur in a certain stage of positioning, isolation or recovery.
2. The method according to claim 1, wherein the method comprises the following steps: it still includes:
and 6, analyzing the reason of the action error, and determining whether errors occur in the positioning, the isolation and the recovery or not by comparing the sequence of the record in the actual action table and the suggested action of the switch, wherein if the errors occur, the links in which the errors occur are recorded in a result judgment table.
3. The method according to claim 1, wherein the method comprises the following steps: the power distribution network in the step 1 comprises a hand-in-hand single-ring network, a multi-section single-connection network and a section two-connection network architecture, and a connection switch must be arranged in a line.
4. The method according to claim 1, wherein the method comprises the following steps: the division method of the section in the step 1 comprises the following steps: the feeder in the power distribution network is divided into different sections according to the minimum unit formed by combining two switches and circuits between the switches, and the sections are divided by adopting a depth-first algorithm.
5. The method according to claim 1, wherein the method comprises the following steps: the fault positioning method in the step 2 comprises the following steps: and extracting the latest accident total information and the switching action information according to the SOE alarm information provided by the main station to carry out fault positioning, and determining the fault position according to the overcurrent information existing at the upstream of the fault position and the overcurrent information not existing at the downstream.
6. The method according to claim 5, wherein the method comprises the following steps: the SOE alarm information is obtained by adopting a time node screening method.
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