CN113612228B - Multi-dimensional information fusion-based feeder automation active fault processing system, method and readable storage medium - Google Patents
Multi-dimensional information fusion-based feeder automation active fault processing system, method and readable storage medium Download PDFInfo
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
- H02J3/00125—Transmission line or load transient problems, e.g. overvoltage, resonance or self-excitation of inductive loads
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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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
- Y04S10/40—Display of information, e.g. of data or controls
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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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
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Abstract
The invention discloses a feeder automation active fault processing system, a method and a readable storage medium based on multidimensional information fusion, wherein the system comprises: the system comprises an SCADA system, an operation controller and a network communication system, wherein the network communication system builds communication among the SCADA system, the operation controller, the power distribution terminal and a control component thereof; the SCADA system is used for reading real-time action signals or graphic simulation operation signals and is used for starting the operation controller to execute an operation program; and storing or calling an operation program in the operation controller, completing feeder automation active fault control processing based on the real-time action signal, and realizing fault region positioning, isolation and non-fault region load transfer. The system can also be used for expanding real-time libraries and commercial libraries.
Description
Technical Field
The invention belongs to the technical field of feeder automation, and particularly relates to a system and a method for processing active faults of feeder automation based on multidimensional information fusion and a readable storage medium.
Background
With the continuous development of society, realizing distribution network automation is a requirement for power system development, and feeder automation technology is a core of distribution network automation. Feeder automation is a direct and effective technical means and important guarantee for improving the power supply reliability and reducing the power supply loss of a power distribution network, so that the feeder automation is an important point for power distribution network construction and transformation. The feeder automation can enable the power grid to run more intelligently, so that the development requirement of distribution automation is gradually met.
Feeder automation is mainly realized by adopting two modes of centralized and in-situ control. The power distribution main loop mainly adopts a centralized control mode, and realizes control by means of communication information through the coordination of a main station system; the linear and radiation power supply mostly adopts an in-situ control mode, and the local range is rapidly controlled; in recent years, with the improvement of the degree of automation, a control mode of centralized and in-situ distributed coordination and coordination of a main station is also increased; feeder automation is a necessary trend in the modernization of electrical power systems.
However, at present, when a power distribution network breaks down, an electric power user usually needs to dial a customer service telephone of a customer service system of a national network to report and repair, and service acceptors send information fed back by the user to a local rush-repair team.
Disclosure of Invention
The invention aims to provide a feeder automation active fault processing system, a feeder automation active fault processing method and a readable storage medium based on multidimensional information fusion, aiming at the problems that the existing power distribution network system has low manual fault processing efficiency and has subjectivity and inaccurate research and judgment. The system and the method realize the automatic active fault treatment of the feeder line, comprise fault region positioning, fault isolation and non-fault region load transfer, meet the treatment requirement of the feeder line fault, solve various problems of the existing manual treatment, are beneficial to reducing the manual workload, and have very important significance for improving the accuracy of confirming the fault type, improving the maintenance efficiency and improving the electricity utilization satisfaction of the power user.
In one aspect, the present invention provides a feeder automation active fault handling system based on multidimensional information fusion, which includes: the system comprises an SCADA system, an operation controller and a network communication system, wherein the network communication system builds communication among the SCADA system, the operation controller, the power distribution terminal and a control component thereof;
The SCADA system is used for reading real-time action signals or graphic simulation operation signals and is used for starting the operation controller to execute an operation program;
And storing or calling an operation program in the operation controller, and completing feeder automation active fault control processing based on the real-time action signal.
Optionally, the system further comprises a real-time library and/or a commercial library;
The operation controller executes an operation program to realize the feeder automation active fault control processing, and the obtained fault processing result is written into the real-time library and displayed in a visible form;
and the operation controller executes an operation program to realize the feeder automation active fault control processing, and the obtained fault processing result is written into the commercial library for storage.
In a second aspect, the present invention provides a method for processing an active fault of feeder automation based on multidimensional information fusion, which includes the following steps:
step 1: acquiring an action signal of a feeder system of a distribution network in a monitoring area;
step 2: based on the action signals and fault identification criteria, identifying whether the fault is a fault, if so, executing a fault analysis step 3 or pushing a fault queue to wait for executing the fault analysis step 3;
step 3: fault analysis and control are completed based on fault signals of the power distribution terminal or on-site distributed coordination signals, and the fault analysis and control comprise: fault area positioning, fault isolation strategy and non-fault area load transferring strategy;
step 4: judging a fault processing mode, wherein the fault processing mode is automatic or interactive;
Step 5: and (3) processing the fault analysis and control in the step (3) based on the judged fault processing mode.
Optionally, in step 4, if the fault handling manner is determined to be automatic, the method further includes:
firstly, checking whether locking can be automatically executed, and if the locking cannot be passed, converting a fault processing mode into an interactive mode;
if the fault isolation strategy can pass the verification, automatically executing the fault isolation strategy, and if the fault isolation strategy fails to execute, converting a fault processing mode into an interactive mode;
If the fault isolation strategy is successfully executed, automatically executing a non-fault area load transfer strategy, and if the fault isolation strategy is failed to be executed, converting a fault processing mode into an interactive mode;
and if the load transferring strategy of the non-fault area is successfully executed, the fault analysis and control are considered to be completed.
Optionally, the non-fault area load transfer policy generation process follows the following principle or the following partial principle:
(1) If the operation is completed or partially completed for the recovery strategy in the centralized and local distributed coordination mode of the master station, the local distributed operated scheme is preferably selected;
(2) When the distributed power supplies exist in the transfer paths and the power supply is restored, the paths of the non-distributed power supplies are selected most preferably;
(3) In case of overload, the overload circuit is placed at the end;
(4) In the scheme without overload, the switching scheme of a section switch in a switching station or a special interconnecting line switch between stations is selected preferentially;
(5) For the scheme without overload, the load is not judged, and the power supply conversion of the important double-power-supply user and the existing power supply are not from the same transformer substation;
(6) And when no important user exists, the user does not see the load, directly see the operation steps, and arrange the operation steps from low to high according to the load if the step data are the same.
Optionally, when the fault area is located, selecting to determine the fault area by using signals of the fault indicator lamp and/or the fault indicator FTU as one of fault area locating methods;
When the fault is between two points, the fault area is a feeder line section between a normal fault indicator lamp and an adjacent alarm fault indicator lamp, and the fault indicator lamp is used as a boundary of the equipment fault area;
When the fault is among multiple points, the fault area is a feeder line section between a normal fault indicator lamp and all alarm fault indicator lamps adjacent to the normal fault indicator lamp, and the fault indicator lamp is used as a fault area boundary of equipment;
When a fault exists between the fault indicator lamp and the FTU, the fault area is a feeder line section between the normal fault indicator lamp and all the fault indicator lamps and FTUs in an alarm state, which are adjacent to the normal fault indicator lamp, and the fault indicator and the FTU corresponding switch are used as equipment fault area boundaries.
Optionally, in step 2, if the fault is not identified based on the action signal and the fault identification criterion, the associated information corresponding to the action signal is used as a suspected fault signal, and an alarm is sent.
Optionally, the fault identification criterion is a basis for judging whether the fault is a fault, and the fault identification criterion is: one or more of total opening and closing accidents, abnormal opening and closing, opening and closing and protection;
wherein the brake-off and accident-on total comprises a brake-off signal and an accident total signal; the switching-on/off system receives three signals of switching-off, switching-on and switching-off simultaneously in a specified time; the abnormal brake opening is a set special switch, and once the system receives a brake opening signal corresponding to the special switch, the system considers that the fault identification criterion is met; the switching-off and protection is that the system receives a switching-off signal and a protection action signal at the same time in a specified time.
Optionally, the fault analysis in the step 3 is divided into simple faults and complex faults, wherein the simple faults comprise a breaker outlet fault, a bus fault, a cable fault, a load side fault and a line end fault; the complex faults include: fault current signal discontinuous fault, side multipoint fault, side and opposite side simultaneous fault, fault with uncontrollable switch needing to enlarge range, fault with load not being transferred to load throwing and splitting, fault at tie switch.
Optionally, when the fault analysis and control are performed in step 5, the system is performed in a centralized and/or in-situ distribution manner by the master station;
If the method is performed in a centralized and local distributed mode by a master station, the local distributed mode is responsible for fault isolation operation, and the master station is centralized for load transfer operation of a non-fault area; or the local distribution type is responsible for fault isolation operation and non-fault area load transfer operation, and the master station realizes monitoring and backup functions in a centralized manner.
In a third aspect, the present invention provides a readable storage medium storing a computer program, the computer program being invoked by a processor to perform:
a feeder automation initiative fault processing method based on multidimensional information fusion.
Advantageous effects
1. The feeder automation active fault processing system based on multidimensional information fusion solves various problems of manual fault processing of the existing power distribution network system, reduces manual workload, and has very important significance for improving accuracy of fault type confirmation, maintenance efficiency and electricity utilization satisfaction of power users.
2. The feeder automation active fault processing method based on multidimensional information fusion provided by the invention realizes fault region positioning, fault isolation and non-fault region load transfer of feeder faults in a power distribution network system, meets various requirements of fault processing, and improves fault processing efficiency.
Drawings
FIG. 1 is a schematic diagram of functional modules of a feeder automation active fault handling system based on multidimensional information fusion in embodiment 1;
FIG. 2 is a schematic flow chart of a method for processing an active fault of feeder automation based on multidimensional information fusion in embodiment 3;
FIG. 3 is a schematic diagram of a suspected fault analysis function flow;
FIG. 4 is a fault isolation schematic;
FIG. 5 is a schematic diagram of a fault circuit corresponding to a simple fault;
Fig. 6 is a schematic diagram of a fault line corresponding to a complex fault.
Detailed Description
The invention will be further illustrated with reference to examples.
Example 1
As shown in fig. 1, the feeder automation active fault processing system based on multidimensional information fusion provided in this embodiment includes: SCADA system (data acquisition and monitoring control system), operation controller (load or call operation program), real-time library, commercial library and network communication system. The network communication system builds communication among the SCADA system, the operation controller, the power distribution terminal and the control components thereof, such as communication among the SCADA system and the power distribution terminal, and the operation controller communicates with the feeder line upper switch and the power distribution terminal, so that real-time action information collection and other fault information collection are realized based on the network communication system.
The SCADA system is used for reading real-time action signals or graphic simulation operation signals, and in the embodiment, the SCADA system starts the operation controller to execute an operation program through an enterprise private network. Wherein, in some implementations, the running controller may be a controller or processor with data processing functions, memory functions within the SCADA system; it may also be a controller, processor or computer with data processing functions, memory functions, independent of the SCADA system, e.g. provided at the master station system. It should also be appreciated that the run controller referred to by the present system may be multiple ends with the same functionality (executing the run program) depending on the differences in the centralized and in-situ distributed control modes of the master station.
For example, one program deployment is: the real-time action signal data read by the SCADA (Supervisory Control And Data Acquisition, data acquisition and monitoring control system) is transmitted to daEar, daEar, fault location is started after the information is received, corresponding strategies are generated, the strategies are written into a database, and a graph and an interface program are simultaneously pushed out to prompt a dispatcher; the da_client receives the message and pushes out the content of the da_static display analysis result, meanwhile, if the graphics process is in, the graphics process is switched to the corresponding graphics, the power failure equipment is colored and displayed in the fault area coloring mode, and the specific fault area is colored and displayed in the box; DAOp is simulation program, daexe is start-up program, program names and functional description are shown in table 1:
TABLE 1
And storing or calling an operation program in an operation controller, and completing feeder automation active fault control processing based on the real-time action signal. Wherein the specific procedure of feeder automation active fault control process is set forth with reference to the following embodiments.
And the running controller executes the running program to start fault positioning and generate a corresponding strategy, a fault positioning result and the strategy are written into the real-time library, and a graph and a result display interface are deduced in real time, wherein the result display interface comprises an upper alarm window, an analysis result, graph coloring and fault inquiring options. It should be appreciated that the display content and display function may be adapted according to the actual application requirements.
And the operation program writes the fault information into the commercial library for later data inquiry.
In this embodiment, the system comprehensively follows international standard IEC61970/61968, uses SCADA as a base, uses power outage management as an application center, covers all distribution network devices, emphasizes information sharing integration and comprehensive utilization, and covers all business processes of the whole distribution network scheduling command. The system relates to a master station system, a communication terminal, a power distribution terminal, line primary equipment and the like. The corresponding control mode adopts an on-site distributed control mode, a master station centralized control mode and an on-site distributed coordination mode.
The master station system collects fault signals (generally overcurrent signals) acquired by the power distribution terminals (FTU, DTU) by means of various communication modes (optical fiber communication, carrier communication and wireless communication), and combines topology model analysis established by the master station system to obtain a fault area, and then issues remote control instructions. The feeder fault processing function mainly comprises fault analysis, fault positioning, fault isolation and non-fault area load transfer. Fault isolation and automatic recovery of the in-situ distributed control is accomplished by the switch itself, without the need for master station control.
The centralized and on-site distributed coordination of the master station has two coordination modes, one is that the on-site distributed is responsible for isolation operation, the centralized master station is responsible for transfer operation, and the centralized master station is in the status of monitoring and control. Another way is to perform all control operations in a distributed manner in situ, with the master station providing centralized monitoring and backup means.
Example 2
As shown in fig. 2, the embodiment provides a feeder automation active fault processing method based on multidimensional information fusion, which includes the following steps:
step S1: and (2) acquiring captured action signals, wherein the action signals generally comprise switch switching signals, protection signals and accident total signals, and turning to step S2.
Wherein the motion signal is captured by the SCADA system.
Step S2: and identifying whether the fault is based on the action signal and the fault identification criterion, if so, turning to step S3, otherwise, sending out the criterion which does not pass as a suspicious warning and continuing to capture.
Wherein, the fault identification criterion is a fault starting condition, and generally comprises total switching-off and switching-on accidents, abnormal switching-off and switching-on protection. If one of the four conditions is selected for the field situation, the selection is generally "opening and protection".
Judging whether the signal meets the fault identification criterion or not according to the content of the action signal in the signal validity period, if so, judging that the signal is a fault, and if not, judging that the signal is a suspected fault. As shown in fig. 3, the present invention preferably prompts the user for suspected faults with alarms and graphic displays, and does not automatically pop up the fault handling interface/automatically perform fault analysis for the suspected faults.
Step S3: in order to ensure that fault signals are completely sent, fault information pushed into a fault queue is circularly waited for a period of time before fault analysis, and the time is definite;
step S4: whether the mode equipment state corresponding to the action equipment accords with the definition (for example, the communication state is normal and can be freely configured), if not, the fault analysis is terminated and the alarm is given, and if so, the step S5 is carried out;
In this embodiment, the action device generally refers to a trip switch, and the mode device is a mode device set by the trip switch, which may be a switch, protection, and remote signaling of a measurement point. The purpose of this step is that the defined switches allow to participate in the starting criteria of the feeder fault analysis, i.e. the undefined switches will not participate in the feeder fault analysis.
Step S5: according to the fault signal (or the on-site distributed matching signal) sent by the power distribution terminal, the fault positioning is completed, and the step S6 is shifted;
It should be appreciated that fault localization may be achieved using feeder fault localization methods in the art based on fault signals (action signals belonging to a class of fault signals) or coordinated signals. In this embodiment, when the fault indicator lamp and the FTU are disposed on the feeder, the fault area may be determined by using the fault indicator lamp and/or the signal of the fault indicator FTU. The method comprises the following steps:
When the fault is between two points, the fault area is a feeder line section between a normal fault indicator lamp and an adjacent alarm fault indicator lamp, and the fault indicator lamp is taken as equipment as a fault area boundary; corresponding to the a-graph in fig. 4.
When the fault is among multiple points, the fault area is a feeder line section between a normal fault indicator lamp and all alarm fault indicator lamps adjacent to the normal fault indicator lamp, and fault indicator lamp equipment is taken as a fault area boundary; corresponding to b in fig. 4.
When a fault exists between the fault indicator lamp and the FTU, the fault area is a feeder line section between the normal fault indicator lamp and all the fault indicator lamps and FTUs in an alarm state, which are adjacent to the normal fault indicator lamp, and the fault indicator lamp and the FTU corresponding switch are taken as fault area boundaries; corresponding to graph c in fig. 4.
Two points can be understood as a single line and multiple points can be understood as multiple lines where branches exist. As shown in fig. 4, a-c, the rectangular box represents the switch to which the FTU corresponds.
Step S6: according to the fault positioning result and the controllable condition of the switch, an executable isolation scheme with a minimum range (the isolation scheme can moderately enlarge the isolation range according to the controllable condition of the switch, information such as a tag, and the like), and the step S7 is performed;
step S7: load transfer in the non-fault area is preferable to possible transfer schemes, and preferable indexes include controllability of a switch, transfer capability of a line, control priority of equipment and the like, and the steps are transferred to the step S8 and the step S9;
in this embodiment, the non-fault area load transfer policy generation process follows the following principle or the following partial principle:
(1) If the operation is completed or partially completed for the recovery strategy in the centralized and local distributed coordination mode of the master station, the local distributed operated scheme is preferably selected;
(2) When the distributed power supplies exist in the transfer paths and the power supply is restored, the paths of the non-distributed power supplies are selected most preferably;
(3) In case of overload, the overload circuit is placed at the end;
(4) In the scheme without overload, the switching scheme of a section switch in a switching station or a special interconnecting line switch between stations is selected preferentially;
(5) For the scheme without overload, the load is not judged, and the power supply conversion of the important double-power-supply user and the existing power supply are not from the same transformer substation;
(6) And when no important user exists, the user does not see the load, directly see the operation steps, and arrange the operation steps from low to high according to the load if the step data are the same.
Step S8: the fault information is issued to other systems; the system supports generating fault description information, and can be connected to other systems through an external issuing interface;
Step S9: judging a fault processing mode, wherein the fault processing mode comprises an automatic mode and an interactive mode; if the interaction mode is adopted, the fault information is stored in a real-time library, an interaction processing interface is pushed out on a fault processing table, and the fault processing interface is controlled by an operator; if the automatic mode is adopted, the next verification is carried out, and the step S10 is carried out;
step S10: checking whether locking is automatically executed or not, wherein the locking is automatically executed in many cases (such as discontinuous fault signals, a fault processing mode is a mode of centralized and distributed matching, etc.); if the verification is not passed, the method is converted into a manual interaction mode, fault information is written into a real-time library, and a corresponding fault processing interaction interface is pushed out at a dispatching desk; if the verification is passed, turning to step S11;
Step S11: when the fault processing scheme is executed in an automatic mode, the system automatically shields remote control monitoring and directly remotely controls the equipment; if failure occurs in the remote control process, the system is also remotely controlled again according to parameter configuration;
step S12: automatically executing an isolation scheme; if the execution fails, and the processing mode of the configuration isolation failure is that the isolation failure is converted into a manual interaction processing mode when the interaction is changed, fault information is written into a real-time library, and an interaction interface is deduced; if the execution is successful, go to step S13;
Step S13: performing automatic fault recovery operation (corresponding to a load transfer strategy) according to the optimal strategy selected by the priority level of the recovery strategy, and transferring to manual interaction processing if the fault recovery remote control fails; step S14, if the remote control is successful;
Step S14: after the fault processing is finished, turning to step S18, archiving the fault information, pushing out a historical fault information inquiry interface, and displaying the fault information which is just processed;
Step S15: if a manual interaction mode is adopted, the dispatcher performs one-by-one remote control operation through the prompt information of the interaction interface, and the remote control operation of the interface adopts a monitoring remote control mode;
step S16: the dispatcher performs remote control execution of the isolation and recovery operation on the fault, and the step S17 is transferred;
Step S17: archiving fault information, completing fault processing, and turning to step S18;
Step S18: and synchronizing the fault information of a three-area, namely archiving the fault information, pushing out a historical fault information inquiry interface, and displaying the fault information which is just processed.
It should be noted that, in some possible ways, the above-mentioned partial steps may be optionally not performed without departing from the basic idea of the invention, and the above-mentioned procedure provided in this embodiment is only a preferred embodiment of the method according to the invention.
It should also be noted that the above-mentioned flow is applicable to any distribution network wiring form, supports the fault analysis of various topological structures, and the fault diagnosis, isolation and recovery function is applicable to the grid structure of various distribution networks, has effectively expanded feeder automation's application scope.
For the above-described flow, the explanation of the partial execution sub-steps is as follows:
description of a fully automatic execution mode: when the system enters a full-automatic execution mode, once the fault meets the starting condition, the system is remotely controlled one by one according to the generated scheme, and during the control period, the system can not stop operation except the following situations: (1) The system has two solutions to the failure of the full-automatic remote control: one is to stop the full-automatic execution, to change to manual interaction, and the other is to enlarge the isolation range, and to continue the remote execution until the processing is completed. If the first processing mode is selected, after the failure of isolating remote control is met, the processing mode is changed into manual processing, and the system cannot be automatically controlled by remote control; (2) When the system completes fault isolation and fault recovery under the full-automatic execution mode, if the remote control of the recovery switch fails, the operation of other recovery switches is continued until the operation is completed, and then the interaction is carried out, and the equipment with the failure in remote control is manually processed; (3) The fault signal is discontinuous, and when the fault current signal is analyzed to be missing, the system automatically executes locking to be processed in a manual interaction mode; (4) failure handling scheme conflict; (5) switching secondary tripping in a short time; (6) The operation switch is internally provided with other main network switches except the tripping switch; and (7) performing downstream recovery strategy conversion interaction fully automatically.
Fault isolation description: the area fault determined by the over-current protection (or fault indicator) is the minimum area of fault isolation because other requirements, the fault isolation area may continue to expand. Such as: the isolating switch tries to break the brake, but is unsuccessful, and sends a refusal action sign signal; whether the switch can be remotely controlled or not, including whether the switch has a remote control point number or not, and whether the communication is normal or not; whether a signboard is hung or not. It is necessary at this time to ensure that the fault and maximum range restore the power supply to the non-fault area by enlarging the isolation range.
The history query interface for feeder fault handling provides a means for a user to query feeder fault handling history information. Fault information that occurs over a period of time in the past can be obtained through an interface to a history query, including: fault occurrence time, fault analysis results, fault processing schemes provided by the system and executing process information of fault processing by operators.
Description of the operating states: (1) The on-line state, also called as the put-in state, in which the feeder fault handling of a certain line is running, means that the system monitors the running state of the line normally, and once the fault of the line is found, the process of fault analysis handling is started; (2) The offline state is also called as the exit state, and the feeder fault processing operation of a certain line indicates that the system only records possible fault conditions of the line in the offline state and does not perform fault analysis and warning; (3) The simulation state is also called a test state, when the feeder line fault processing of a certain line runs in the simulation state, the system records possible fault conditions of the line and receives simulation information, and fault analysis and processing are completed in the simulation state.
Fault instance
The fault analysis in the system and the method 3 thereof is divided into simple faults and complex faults, wherein the simple faults comprise a breaker outlet fault, a bus fault, a cable fault, a load side fault and a line end fault; the complex faults include: fault current signal discontinuous fault, one side multipoint fault, one side and opposite side simultaneous fault, fault with uncontrollable switch needing to enlarge range, fault with load not being transferred to need to throw load (load throwing principle is to throw load with minimum capacity, load hanging with electricity protection is thrown finally), fault with load splitting (transfer area splitting), fault at tie switch.
The following will be presented with respect to some examples of simple faults and complex faults.
Breaker outlet failure as shown in fig. 5 a:
The action signals are as follows: the breaker S1 is switched off; protection action of the breaker S1; a1 protection action.
And (3) fault analysis: according to the action signals, the fault of the area between A1 and A2, namely the fault of the bus I, the isolation fault area of the switch A1 and A2 is disconnected, the downstream power supply is recovered by closing A9 or A6, and the upstream power supply is recovered by closing S1.
Cable faults as shown in fig. 5 b:
action signal: the breaker S1 is switched off; protection action of the breaker S1; a1, protecting action; a2 protection action.
According to the action signals, the faults of the A2-A3 areas, namely cable faults, the A2-A3 isolation fault areas are disconnected, the A9 or the A6 is closed to recover the downstream power supply, and the S1 is closed to recover the upstream power supply.
The present side multipoint failure as shown in fig. 6 a:
The action signals are as follows: the breaker S1 is switched off; protection action of the breaker S1; a1, protecting action; a2, protecting action; a3, protecting action; a4, protecting action; b4 protection action.
And (3) fault analysis: according to the analysis of the action signals, the fault area is larger than one place, the faults of the downstream areas A4 to A5 and B4 can be judged according to the fault signals, the isolation faults of A4, A5 and B4 are disconnected, the downstream power supply is recovered by closing A6, and the upstream power supply is recovered by closing S1.
The present side-to-side simultaneous failure as shown in fig. 6 b:
the action signals are as follows: the breaker S1 is switched off; protection action of the breaker S1; a1, protecting action; the breaker S2 is switched off; protection action of the breaker S2; a12, protection action; a11, protection action; the breaker S3 is switched off; protection action of the breaker S3; a8, protecting action; b9 protection action.
And (3) fault analysis: according to fault signal analysis, three faults respectively cause S1, S2 and S3 to trip, and according to fault current, faults of three areas of A1-A2, A11-A10 and B9 downstream can be judged, fault processing schemes are respectively provided, a first fault is processed by opening A1 and closing S1, a second fault is processed by opening A11 and A10 and closing S2, and a third fault is processed by opening B9 and closing S3.
Override skip as shown in fig. 6 c:
And (3) fault analysis: the switches of the ring main unit are all circuit breakers, the circuit breakers S1 and B5 trip, fault currents exist in A1, A2, A3, A4, A5 and B5, and the fault area is judged to be the fault of the downstream area of B5. Since the B5 switch has tripped, the fault area has been isolated, thus giving a treatment scheme: and S1, closing is carried out, and power supply is restored.
Fault handling with distributed power supply as shown in fig. 6 d:
And (3) fault analysis: in the figure, B 3,B5 is a distributed power grid-connected switch, and two distributed power supplies DG1 and DG2 are respectively connected to the downstream. And in normal operation, both the B 3 and the B 5 are in a combined state and are in grid-connected operation. According to the operation mode, assuming that the outlet line of S 1 fails, the B 3 and the B 5 detect that the fault is disconnected at the first time, and the switch of S 1 trips, so that fault analysis is started. And at the same time, S 2、S3 also loses power supply capability. At this time, the distributed power supply is required to participate in recovery. The total capacity of the two distributed power supplies can only meet the power supply of the load B 2.
The fault handling isolation scheme is as follows: disconnect a 1 isolates the fault.
The operation steps of the distributed power supply participating in the fault recovery strategy are as follows: disconnect B 6 (load dump operation); disconnect B 1 (load dump operation); disconnect B 2 (distributed power isolated load operation); closing B 3 (area 1 unique scheme); b 5 is closed (distributed power sources are started one by one); b 2 is closed (distributed power load is restored one by one).
Application instance
Taking a certain power distribution network branch as an example, a fault processing process is described.
Firstly, the system starts fault analysis, a double-screen push diagram is given, and a fault line single line diagram and a feeder fault interactive processing interface are respectively given on two screens. And after the fault analysis is finished, popping up a feeder line fault interaction interface.
All unprocessed accident information is listed in the left side frame of the interactive interface. The fault information including fault area, isolation, recovery scheme, fault judgment basis, etc. is introduced in the center of the interactive interface. The 'region coloring' button on the interactive interface is used for displaying the interaction coloring with the graph so as to assist an operator to inquire the fault region information. Clicking on the corresponding button will correspond to a graphical coloring display, e.g., clicking on the fault area button will pop up the coloring interface.
After the accident is processed, clicking a processing end button, storing the accident into a history database, and simultaneously clearing operation information in a real-time database; and put the line operation mode into an on-line mode.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.
Example 3
The present embodiment provides a readable storage medium storing an operating program that is called to execute:
A feeder automation initiative fault processing method based on multidimensional information fusion. The specific implementation of this method can be referred to the description of embodiment 2 above.
The readable storage medium is a computer readable storage medium, which may be an internal storage unit of the controller according to any one of the foregoing embodiments, for example, a hard disk or a memory of the controller. The readable storage medium may also be an external storage device of the controller, such as a plug-in hard disk, a smart memory card (SMART MEDIA CARD, SMC), a Secure Digital (SD) card, a flash memory card (FLASH CARD), or the like, which are provided on the controller. Further, the readable storage medium may also include both an internal storage unit and an external storage device of the controller. The readable storage medium is used to store the computer program and other programs and data required by the controller. The readable storage medium may also be used to temporarily store data that has been output or is to be output.
Based on such understanding, the technical solution of the present invention is essentially or a part contributing to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned readable storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a random access Memory (RAM, randomAccess Memory), a magnetic disk, an optical disk, or other various media capable of storing program codes.
It should be emphasized that the examples described herein are illustrative rather than limiting, and that this invention is not limited to the examples described in the specific embodiments, but is capable of other embodiments in accordance with the teachings of the present invention, as long as they do not depart from the spirit and scope of the invention, whether modified or substituted, and still fall within the scope of the invention.
Claims (9)
1. A feeder automation initiative fault processing method based on multidimensional information fusion is characterized in that: the method comprises the following steps:
step 1: acquiring an action signal of a feeder system of a distribution network in a monitoring area;
step 2: based on the action signals and fault identification criteria, identifying whether the fault is a fault, if so, executing a fault analysis step 3 or pushing a fault queue to wait for executing the fault analysis step 3;
step 3: fault analysis and control are completed based on fault signals of the power distribution terminal or on-site distributed coordination signals, and the fault analysis and control comprise: fault area positioning, fault isolation strategy and non-fault area load transferring strategy;
step 4: judging a fault processing mode, wherein the fault processing mode is automatic or interactive;
In step 4, if the fault handling mode is determined to be automatic,
Firstly, checking whether locking can be automatically executed, and if the locking cannot be passed, converting a fault processing mode into an interactive mode;
if the fault isolation strategy can pass the verification, automatically executing the fault isolation strategy, and if the fault isolation strategy fails to execute, converting a fault processing mode into an interactive mode;
If the fault isolation strategy is successfully executed, automatically executing a non-fault area load transfer strategy, and if the fault isolation strategy is failed to be executed, converting a fault processing mode into an interactive mode;
if the load transferring strategy of the non-fault area is successfully executed, the fault analysis and control are considered to be completed;
Step 5: processing the fault analysis and control in the step 3 based on the judged fault processing mode;
When the fault processing scheme is executed in an automatic mode, the system automatically shields remote control monitoring and directly remotely controls the equipment; if failure occurs in the remote control process, the system is also remotely controlled again according to parameter configuration;
if a manual interaction mode is adopted, the dispatcher performs one-by-one remote control operation through the prompt information of the interaction interface, and the remote control operation of the interface adopts a monitoring remote control mode; the dispatcher performs remote control execution of the isolation and recovery operation on the faults; and archiving fault information to finish fault processing.
2. The method according to claim 1, characterized in that: the non-fault area load transfer strategy generation process follows the following principle or the following partial principle:
(1) If the operation is completed or partially completed for the recovery strategy in the centralized and local distributed coordination mode of the master station, the local distributed operated scheme is preferably selected;
(2) When the distributed power supplies exist in the transfer paths and the power supply is restored, the paths of the non-distributed power supplies are selected most preferably;
(3) In case of overload, the overload circuit is placed at the end;
(4) In the scheme without overload, the switching scheme of a section switch in a switching station or a special interconnecting line switch between stations is selected preferentially;
(5) For the scheme without overload, the load capacity is not seen, and the power supply conversion of the important double-power-supply user and the existing power supply are not from the same transformer substation;
(6) And when no important user exists, the user does not see the load, directly see the operation steps, and arrange the operation steps from low to high according to the load if the step data are the same.
3. The method according to claim 1, characterized in that: when the fault area is positioned, selecting a fault area determined by using signals of a fault indicator lamp and/or a fault indicator FTU as one of fault area positioning methods;
When the fault is between two points, the fault area is a feeder line section between a normal fault indicator lamp and an adjacent alarm fault indicator lamp, and the fault indicator lamp is used as a boundary of the equipment fault area;
When the fault is among multiple points, the fault area is a feeder line section between a normal fault indicator lamp and all alarm fault indicator lamps adjacent to the normal fault indicator lamp, and the fault indicator lamp is used as a fault area boundary of equipment;
when a fault exists between the fault indicator and the FTU, the fault area is a feeder line section between the normal fault indicator and all the fault indicators and FTUs in an alarm state, which are adjacent to the normal fault indicator, and the fault indicator and the FTU corresponding switch are used as equipment fault area boundaries.
4. The method according to claim 1, characterized in that: and step 2, if the fault is not identified based on the action signal and the fault identification criterion, the associated information corresponding to the action signal is used as a suspected fault signal, and an alarm is sent out.
5. The method according to claim 1, characterized in that: the fault identification criterion is a basis for judging whether the fault is a fault or not, and is: one or more of total opening and closing accidents, abnormal opening and closing, opening and closing and protection;
wherein the brake-off and accident-on total comprises a brake-off signal and an accident total signal; the switching-on/off system receives three signals of switching-off, switching-on and switching-off simultaneously in a specified time; the abnormal brake opening is a set special switch, and once the system receives a brake opening signal corresponding to the special switch, the system considers that the fault identification criterion is met; the switching-off and protection is that the system receives a switching-off signal and a protection action signal at the same time in a specified time.
6. The method according to claim 1, characterized in that: the fault analysis in the step 3 is divided into simple faults and complex faults, wherein the simple faults comprise a breaker outlet fault, a bus fault, a cable fault, a load side fault and a line end fault; the complex faults include: fault current signal discontinuous fault, side multipoint fault, side and opposite side simultaneous fault, fault with uncontrollable switch needing to enlarge range, fault with load not being transferred to load throwing and splitting, fault at tie switch.
7. A readable storage medium, characterized by: a computer program is stored, the computer program being invoked by a processor to perform:
the method of any one of claims 1-6.
8. A feeder automation initiative fault handling system based on multidimensional information fusion is characterized in that: comprising the following steps: the system comprises an SCADA system, an operation controller and a network communication system, wherein the network communication system builds communication among the SCADA system, the operation controller, the power distribution terminal and a control component thereof;
The SCADA system is used for reading real-time action signals or graphic simulation operation signals and is used for starting the operation controller to execute an operation program;
Storing or calling an operation program in the operation controller, and completing the feeder automation active fault control processing method according to any one of claims 1-6 based on the real-time action signal.
9. The feeder automation active fault handling system of claim 8, wherein: also including real-time libraries and/or commercial libraries;
The operation controller executes an operation program to realize the feeder automation active fault control processing, and the obtained fault processing result is written into the real-time library and displayed in a visible form;
and the operation controller executes an operation program to realize the feeder automation active fault control processing, and the obtained fault processing result is written into the commercial library for storage.
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