CN117096850A - Automatic sensing and rapid self-healing method and system for medium-voltage bus voltage loss fault - Google Patents
Automatic sensing and rapid self-healing method and system for medium-voltage bus voltage loss fault Download PDFInfo
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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
- H02J3/0012—Contingency detection
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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
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
- H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
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Abstract
The invention discloses an automatic sensing and rapid self-healing method and system for a medium-voltage bus voltage loss fault, comprising the following steps: according to a busbar voltage-losing fault criterion, automatically sensing a medium-voltage busbar voltage-losing fault, acquiring voltage-losing busbar information and associated load information, and obtaining a voltage-losing busbar double-electricity transfer scheme through real-time topology analysis; carrying out safety verification and priority sequencing on the voltage-losing bus duplicate supply scheme, then warehousing, sending the voltage-losing bus information to a client of a workstation to call a bus self-healing human-computer interface, and simultaneously verifying the bus self-healing human-computer interface login user permission to obtain the operation permission of the duplicate supply scheme; editing, checking and executing operation can be performed on the conversion scheme after the login user authority is checked successfully, so that bus voltage loss self-healing is realized. The invention can realize automatic sensing, emergency treatment and quick re-electricity of power failure faults of large-area and large-area substations of more than ten small areas or more, effectively prevent the power failure of the distribution network in a large range, reduce the investment of manpower and material resources, shorten the power failure time and help ensure the more stable and safe operation of the distribution network.
Description
Technical Field
The invention belongs to the technical field of power system distribution automation, and relates to an automatic sensing and rapid self-healing method and system for a medium-voltage bus voltage loss fault.
Background
The current power distribution network fault isolation and power supply recovery methods are aimed at the situation of small disturbance such as feeder line fault of the power distribution network, but sometimes the power distribution network can also generate faults with larger influence such as voltage loss of one or more medium-voltage buses, such as natural disasters (ice disasters, snow disasters, earthquakes and the like), and power transmission line tower falling or power transmission line fault maintenance caused by external damage. Under the above circumstances, it may not be ensured that all the voltage-loss buses are powered back on the high-voltage side, which may cause a power distribution network to power off for a long period of time in a large range.
The existing regional large-area power failure is difficult to find faults by means of manpower, long in emergency disposal time consumption, poor in accuracy and intuitionistic, difficult to ensure timely sensing of power failure faults of a power distribution network, quick power restoration and other emergency disposal demands, and the problems that faults cannot be automatically sensed, large-area power failure manual disposal time consumption is long, poor in accuracy, quick power restoration and the like are solved, so that resident power failure time is long, customer satisfaction is reduced, risk countering capability is poor, and safety and stability of distribution network operation are seriously affected.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the automatic sensing and quick self-healing method and system for the medium-voltage bus voltage loss faults, which can realize automatic sensing, emergency treatment and quick re-electricity recovery of power failure faults of large-area and large-area substations such as tens of small areas or more substations, effectively prevent the power failure of a distribution network in a large range, reduce the investment of manpower and material resources, shorten the power failure time, help to ensure the more stable and safe operation of the distribution network and improve the emergency re-electricity capability.
The invention adopts the following technical scheme.
An automatic sensing and quick self-healing method for a medium-voltage bus voltage loss fault comprises the following steps:
step 1, automatically sensing a medium-voltage bus voltage-loss fault according to a bus voltage-loss fault criterion, acquiring voltage-loss bus information and associated load information thereof, and performing real-time topology analysis based on the load information associated with the voltage-loss bus to obtain a voltage-loss bus duplicate power supply scheme;
step 2, carrying out safety check and priority order on the voltage-loss bus duplicate supply scheme, then carrying out warehouse entry, sending the voltage-loss bus information to a client to call a bus self-healing human-computer interface, and carrying out login user permission check on the bus self-healing human-computer interface;
And step 3, after the login user permission verification is successful, editing, verifying and executing the operation instruction of the transfer scheme through the bus self-healing man-machine interface, so as to realize bus voltage-loss self-healing.
Preferably, in the step 1, the bus voltage loss fault is judged only once within the same bus processing time interval;
the bus voltage loss fault criterion is as follows:
the following faults exist and the existing fault state lasts for 30s, the bus voltage loss fault is indicated:
the three-phase voltage of the bus jumps and is lower than a threshold value, the bus overhaul state is eliminated, the bus association becomes low-switching current abrupt change and the bus association switching current abrupt change are carried out.
Preferably, in step 1, the method further comprises inputting artificially discovered fault voltage-loss bus information through a client graphical interface so as to start self-healing analysis of the voltage-loss bus.
Preferably, in step 1, load information associated with a voltage loss bus is obtained through a static equipment breaker association table of a power distribution main station system, wherein the load information comprises a main network load node and a power supply point.
In the step 1, a main network load node is used as a local side starting point, a plurality of opposite side power supply points are searched from the main network load node based on a depth-first or breadth-first algorithm, a local side to opposite side transfer supply path is obtained from the opposite side power supply points to the searching starting point in a backtracking way, a transfer supply scheme is formed, the transfer supply scheme is traversed, opposite side power supply point information is obtained, the voltages of the same bus and opposite side buses are filtered to be 0 transfer supply scheme, the transfer supply paths of the sides to be transferred and the borrowed power sides at the two ends of a transfer switch are provided, and control combination control and separation equipment is provided to obtain a voltage-losing bus compound power transfer scheme; each rotary scheme includes a circuit breaker and a tie switch.
Preferably, in step 2, the security check rule includes:
(1) Checking whether a tie switch of the transfer scheme has a signboard with forbidden operation attribute, and if so, filtering the scheme;
(2) Checking whether the switch protection state is abnormal in the transfer path of the transfer scheme, and if yes, filtering the scheme.
Preferably, in step 2, the prioritization policy is that the following case of the transfer scheme has a higher priority than the transfer scheme not containing the corresponding case: the system comprises three remote switches, different stations of the line on the side opposite to the side, a plurality of remote-controllable switches, double-power-supply user negative, low load capacity, preset preferential contact switch types, no distributed power supply in the transfer path and no overload;
and the priority of the above case is gradually lowered.
Preferably, in step 2, the transfer scheme after the security check and the priority order is written into a database, a bus voltage-loss event alarm is sent to a client, an alarm window is arranged to prompt a user of the client to currently lose voltage bus information, meanwhile, the information related to the voltage-loss bus is recorded in a failure event table of the voltage-loss bus, and the information of the voltage-loss bus is sent to the client to enable the client to pop up a bus voltage-loss self-healing man-machine interface, and the bus self-healing man-machine interface is logged in a user permission check.
Preferably, in step 2, remote control permission verification is performed on the user login instruction, specifically:
when a user login instruction is received, checking whether a corresponding bus self-healing human-computer interface login user has remote control authority according to a preset remote control authority relationship, if so, allowing direct login, and displaying scheme editing, scheme checking, scheme execution and historical query interface information in the bus voltage-losing self-healing human-computer interface;
in step 3, performing operation authority verification on the operation instruction, specifically:
when the operation rights are checked, if the operation rights are acquired by the workstation bus self-healing man-machine interface, the operation rights of all other workstation bus self-healing man-machine interfaces are blocked, and if the operation rights are not acquired by the workstation bus self-healing man-machine interface, the operation rights are opened to the workstation bus self-healing man-machine interface which is currently acquiring the operation rights;
and allowing the bus self-healing man-machine interface which acquires the operation authority to operate the conversion scheme, and realizing bus voltage-loss self-healing through an interface operation instruction.
Preferably, in step 3, the operation instruction includes a scheme editing, scheme checking and scheme executing instruction;
the scheme editing instruction comprises: checking the number of all schemes, scheme generation time, operation steps of all the schemes to be transferred, and priority ordering information of each scheme of a target scheme to be transferred, and carrying out a scheme priority adjustment instruction;
The scheme checking instruction comprises the following steps: checking all the transfer schemes to be executed, displaying the checking result and instructions of the checking operation of the manual intervention scheme;
the scheme execution instruction comprises: the method comprises the steps of checking double authorities of an operator and a guardian, selecting a remote control mode, displaying information to be executed and dynamically displaying an execution result, and realizing the self-healing of faults of the voltage-losing bus by executing the instruction through the scheme.
Preferably, the manual intervention scheme checking operation instruction comprises:
forced check pass instruction: the proposal that the verification fails is verified and displayed manually;
a raise priority instruction: artificially improving the current line verification execution priority;
a lower priority instruction: artificially reducing the current line verification execution priority;
ejecting a single line drawing instruction: and a single line diagram of the power-losing feeder line is popped up by manual operation.
Preferably, the dual authority check of the operator and the guardian is as follows: the operation person and the guardian both have remote control authority and are different from each other, and the verification is passed, wherein the identities of the operation person and the guardian are preset through a bus decompression self-healing human-computer interface;
the remote control mode is selected as follows: selecting a sequential execution remote control mode or a concurrent execution remote control mode; the sequential execution remote control mode is: whether the former scheme is successful or not does not affect the execution of the latter scheme; the concurrent execution remote control mode is as follows: for the time between two continuous schemes, after the control and separation of the breaker of the former scheme are successful, the contact switch of the former scheme and the breaker of the latter scheme issue remote control instructions simultaneously, and after the control and separation of the breaker of the former scheme are failed, the remote control instructions of the breaker of the latter scheme are issued directly;
The information to be executed is displayed as follows: the scheme information checked by the scheme is listed in a to-be-executed scheme list for display, and the specific information comprises the load of the line before the scheme is executed, the operation steps, operators, remote control time, the load of the line after the scheme is executed and the load of the line after the scheme is executed;
the execution result is dynamically displayed as follows: the real-time refreshing and displaying executing process comprises the current executing state, the node information of an operator, a guardian and a program running machine, and identifies the successful executing control switching-on and switching-off equipment and the failed executing control switching-on and switching-off equipment, and finally, the popup window displays the number of bus lines and the number of failed executing processing of the round.
Preferably, in step 3, the operation instruction further includes an instruction for performing history inquiry on the bus self-healing event, specifically:
inquiring a bus self-healing event according to the starting time and the keywords, and displaying the voltage-losing feeder line/current, the borrowed feeder line/current, the disconnection switch, the interconnection switch and the self-healing time;
the history inquiry defaults to show the bus fault self-healing event of the previous month at the current time point, and simultaneously, the two inquiry modes of time retrieval and time + fault event keyword retrieval are divided;
the time retrieval means that the default display is in the sequence from near to far according to time for the selected time period;
Inquiring according to a time+transformer substation name mode: and screening bus self-healing events through the set time period and fuzzy inquiry containing station keywords, and sequencing and displaying according to the sequence from near to far.
An automatic sensing and quick self-healing system for medium voltage bus voltage loss faults, comprising:
the conversion scheme acquisition module is used for automatically sensing the medium-voltage bus voltage-loss fault according to the bus voltage-loss fault criterion, acquiring voltage-loss bus information and associated load information thereof, and carrying out real-time topology analysis based on the load information associated with the voltage-loss bus to obtain a voltage-loss bus duplicate power conversion scheme;
the conversion scheme processing module is used for carrying out safety check and priority order on the voltage-loss bus duplicate conversion scheme, then carrying out warehousing, sending the voltage-loss bus information to the client to call a bus self-healing human-computer interface, and logging in the user permission check of the bus self-healing human-computer interface;
and the bus voltage-loss self-healing module is used for editing, checking and executing the operation instruction of the transfer scheme through the bus self-healing man-machine interface after the login user permission check is successful, so as to realize the bus voltage-loss self-healing.
A terminal comprising a processor and a storage medium; the storage medium is used for storing instructions;
The processor is configured to operate in accordance with the instructions to perform the steps of the method.
A computer readable storage medium having stored thereon a computer program which when executed by a processor realizes the steps of the method.
The invention has the beneficial effects that compared with the prior art:
different system models and data resources are fused, medium-voltage bus states are monitored in real time, automatic sensing of the voltage-losing bus faults is realized according to bus voltage-losing fault criteria (bus three-phase voltage jump, bus association switch listing judgment, bus association switch current jump, fault duration and the like), bus self-healing analysis is automatically started after the bus voltage-losing faults are sensed, an invalid scheme screening and priority sequencing are performed according to a safety check rule and a priority sequencing principle and the topology service request voltage-losing bus complex power supply scheme is written into a database, meanwhile, a voltage-losing bus message is sent and a bus voltage-losing self-healing man-machine interface is popped up, scheme adjustment, check and execution operation are provided, quick power recovery can be realized in a mode of sequential remote control, concurrent remote control and the like, the complex power time is reduced from hour level to minute level, the working mode of manually executing by means of manual remote control scheme, manual remote control transfer, manual line-by line transfer is broken, multiple voltage-losing load transfer can be realized quickly through automatic and remote batch operation in the whole process, the safety of power supply is greatly reduced, the safety and the safety of power grid operation is greatly reduced, the safety and stability of a power grid is guaranteed; the self-healing function of the manually started bus is provided for processing the manually found voltage-loss bus faults, and for the manually found fault bus, the self-healing analysis of the bus can be immediately started through a graphical interface, and the quick power recovery can be realized; in addition, the history inquiry function is provided, the whole flow process of the self-healing event of the voltage-loss bus can be traced, and the comparison analysis and summarization experience of the same type of event can be used for providing more optimal decision support for later scheme strategy formulation and event processing, so that the risk coping capability is further improved. The invention can realize automatic sensing, emergency treatment and quick power restoration of power failure faults of large-area and large-area substations of more than ten small areas or more, effectively prevent large-range power failure of the distribution network, reduce investment of manpower and material resources, shorten power failure time, help ensure more stable and safe operation of the distribution network and promote emergency power restoration capability.
Drawings
FIG. 1 is a flow chart of an automatic sensing and quick self-healing method for the voltage loss fault of a medium-voltage bus;
fig. 2 is a flowchart of an implementation of an automatic sensing and quick self-healing method for a medium-voltage bus voltage loss fault.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. The described embodiments of the application are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art without making any inventive effort, are within the scope of the present application.
Example 1
As shown in fig. 1-2, the embodiment provides an automatic sensing and rapid self-healing method for a medium-voltage bus voltage loss fault, which specifically comprises the following steps:
step 1, automatically sensing a medium-voltage bus voltage-loss fault according to a bus voltage-loss fault criterion, acquiring voltage-loss bus information and associated load information thereof, and performing real-time topology analysis based on the load information associated with the voltage-loss bus to obtain a voltage-loss bus duplicate power supply scheme;
Further preferably, the fault sensing module automatically senses a medium-voltage bus voltage-losing fault according to a bus voltage-losing fault criterion, acquires voltage-losing bus information and associated load information thereof, and sends a request of a voltage-losing bus power-recovering and converting scheme to the topology service module according to the load information associated with the voltage-losing bus and receives the voltage-losing bus power-recovering and converting scheme returned by the topology service module;
s101, obtaining information of a voltage-loss bus:
two types of failure self-healing analysis triggering modes of the voltage-losing bus are as follows:
monitoring voltage-loss bus data: and according to the real-time monitoring of the running state of the medium-voltage bus, based on a power distribution main station system, integrating other system models and data resources, automatically detecting the state of the bus, carrying out the sensing and the judgment of the failure of the voltage-losing bus according to the judgment criterion of the failure of the voltage-losing bus, and obtaining a set of the voltage-losing bus according to the judgment result.
The bus voltage loss fault criterion refers to that the three-phase voltage of the bus jumps and is lower than a threshold value, the bus maintenance state is eliminated, the bus association becomes low-switching and the bus association switching current suddenly changes, and the fault state lasts for 30s.
And judging the bus voltage loss fault only once within the same bus processing time interval, wherein the processing time interval can be configured, for example, 10 minutes.
Eliminating bus overhaul state faults: when the bus is overhauled, the related low-voltage switch, the transformer branch switch and the bus-bar switch can hang the debugging board or the overhauling board in the station;
the graphical interface is manually started, namely, bus self-healing is manually started based on the graphical interface: for the fault voltage-losing buses found by people, selecting a right-key bus self-healing menu of a target bus in a graphical interface station diagram, acquiring voltage-losing bus information, namely manually selecting a bus analysis process according to the right-key menu of the graphical interface, and sending the voltage-losing bus information.
S102, acquiring load information related to a voltage-loss bus;
finding a load set corresponding to the bus according to the line relation: and depending on a power distribution main station system, different system models and data information are fused, and a load information set associated with the voltage-losing bus is obtained through association of a static equipment breaker association relation table.
S103, sending a request of a voltage-loss bus duplicate power supply scheme to the topology service according to load information related to the voltage-loss bus, and acquiring the voltage-loss bus duplicate power supply scheme;
self-healing analysis of the bus:
topology service request: and sending a request of the step-down bus power restoration scheme to the topology service in real time according to the load information carried by the step-down bus.
Scheme generation and return:
the topology service generates a real-time topology scheme according to the load: analyzing a line transfer scheme according to a main network load node number (taking the main network load node as a local side starting point, searching a plurality of opposite side power supply points from the main network load node based on a depth-first or breadth-first algorithm, backtracking from the opposite side power supply points to the searching starting point, acquiring a local side-to-opposite side transfer path to form a transfer scheme), traversing the transfer scheme, acquiring opposite side power supply point information, filtering a same bus and opposite side bus voltage to be transferred and a transfer scheme of the borrowing side, providing transfer paths at two ends of a transfer switch, providing a control combination control division device, and returning the voltage-losing bus compound power transfer scheme in a structural form (an interactive structural body comprises all transfer scheme information of buses facing topology requests in the front); each switching scheme includes a switch (breaker, tie switch). Each line scheme detailed information comprises information such as power failure power supply information, power borrowing power supply information, operation step information, a transfer path equipment set, a power supply path equipment set and the like; but each scheme is followed by only one circuit breaker and one tie switch that participate in remote execution.
Step 2, carrying out safety check and priority order on the voltage-loss bus duplicate supply scheme, then carrying out warehouse entry, sending the voltage-loss bus information to a client to call a bus self-healing human-computer interface, and carrying out login user permission check on the bus self-healing human-computer interface;
further preferably, safety verification and priority ordering are carried out on the voltage-losing bus duplicate supply scheme, scheme screening ordering is achieved, then the screened and ordered data are written into a database, voltage-losing bus alarms are sent, voltage-losing bus information is recorded, scheme warehousing, fault alarm and event recording operations are completed, the voltage-losing bus information is sent to a client of a workstation, a bus voltage-losing self-healing human-computer interface is called, and user permission verification is logged in the bus self-healing human-computer interface;
in the invention, the fault sensing modules (s 101-105), the client module (s 106) and the bus voltage-loss self-healing human-computer interface (s 107-s 111) are interacted.
S104, carrying out safety check and priority sequencing on the voltage-loss bus double-electricity transfer scheme according to a safety check rule and a priority sequencing principle;
in the step, for the scheme returned by the topology, scheme screening and sorting are carried out according to the security check rule and the priority sorting principle.
Safety check rule:
the first safety check rule is to check whether a tag with an operation prohibition attribute is hung on a contact switch of the transfer scheme, and if so, the scheme is filtered.
The second safety check rule is to check whether the protection state of the switch in the transfer path is abnormal, if the protection remote signaling value associated with the switch in the transfer path is 1, the protection quality code is one of the following: the acquisition has problems, does not change, the working condition exits, is suspicious, is blocked, is forbidden to control, is inhibited from warning, is not actually measured, is double-dislocation, and is hung. If so, the scheme is filtered.
Priority ordering principle: the method is characterized by three remote switch priorities, different station priorities, multiple priorities of remote controllable switch numbers, double-power user priorities, low load capacity, priority of tie switch types, no distributed power priority of transfer paths and no overload priority. That is, the prioritization policy is such that a transfer scheme having the following case has a higher priority than a transfer scheme not having the corresponding case: the system comprises three remote switches (if the transfer scheme comprises the three remote switches, the priority of the corresponding transfer scheme is highest), different stations of the line on the opposite side of the system (the line on the opposite side of the system is not one station in the transfer scheme), a plurality of remote-controllable switches, a plurality of users with double power supplies (if the transfer scheme comprises the users with double power supplies, the priority of the corresponding transfer scheme is high), low load capacity (the priority of the low load capacity in the two transfer schemes is high), contact switch types, no distributed power supply exists in the transfer path, and no overload exists;
And the priority of the above case is gradually lowered.
S105, carrying out warehousing, fault alarming and event recording processing on the transfer scheme subjected to safety verification and priority sorting, and sending out voltage-loss bus information to a client;
and (3) processing a scheme: writing the transfer scheme subjected to safety verification and priority sequencing into a database, sending a bus voltage-losing event alarm to a client, setting an alarm window, prompting a client user of current voltage-losing bus information, recording the voltage-losing bus related information in a voltage-losing bus fault event table, sending the voltage-losing bus information to a workstation client to enable the client to pop up a bus voltage-losing self-healing human-computer interface (corresponding to S106, after receiving the voltage-losing bus information, a client program sends a command to call the bus voltage-losing self-healing human-computer interface, and popping up the bus voltage-losing self-healing human-computer interface), and acquiring operation commands of a user login and a transfer scheme input through the bus voltage-losing self-healing human-computer interface.
S106, the client receives the information of the voltage-loss bus and then invokes the bus self-healing man-machine interface;
and (3) processing the decompression information: the client receives the information of the voltage-losing bus, sends a command for calling the bus self-healing human-computer interface, pops up the medium-voltage bus voltage-losing self-healing human-computer interface, comprises three interfaces of scheme editing, scheme executing and history inquiring, and provides operations such as authority checking, scheme adjusting, scheme checking, scheme executing and history inquiring.
And step 3, editing, checking and executing the operation instruction of the transfer scheme through the bus self-healing man-machine interface after the login user permission check is successful.
And preferably, after receiving the user login and workstation operation instructions sent by the client, performing authority verification, and performing bus voltage-loss self-healing operation according to the verified remote control instructions of the user and the workstation. And realizing quick power restoration through scheme verification and execution operation.
The qualification of the login human-computer interface is obtained through permission verification, and the operation permission is checked through operation locking, so that an operator with the permission performs scheme adjustment, scheme verification, scheme execution and other operations on the scheme of the human-computer interface, and quick power restoration of the voltage-losing bus is realized.
S107, checking user login authority and workstation operation authority of a remote user and a workstation respectively;
and (3) checking authority: in order to ensure the operation safety of the power distribution network, the operation authority of an operator needs to be subjected to standard and strict authority verification, and the operation safety can be realized through a scheme editing interface.
The remote control permission verification is carried out on the user login instruction, and specifically comprises the following steps:
when a user login instruction is received, checking whether a corresponding bus self-healing human-computer interface login user has remote control permission or not according to a preset remote control permission relation, if so, allowing direct login, and displaying scheme editing, scheme execution and historical query interface information in the bus voltage-losing self-healing human-computer interface.
The operation instruction is subjected to operation authority verification, and the operation authority verification is specifically as follows:
when the operation rights are checked, if the operation rights are acquired by the workstation bus self-healing man-machine interface, the operation rights of all other workstation bus self-healing man-machine interfaces are blocked, and if the operation rights are not acquired by the workstation bus self-healing man-machine interface, the operation rights are opened to the workstation bus self-healing man-machine interface which is currently acquiring the operation rights;
allowing the bus self-healing man-machine interface surface with the acquired operation authority to operate the conversion scheme, and realizing bus voltage-loss self-healing through an interface operation instruction; the bus self-healing human-computer interface which does not acquire the operation authority defaults to have no operation authority, only allows the bus self-healing human-computer interface to browse interface information, and does not allow any operation.
Remote control authority: the interface can be opened if the authority is available, and the interface can not be opened if the authority is not available; operation blocking: if other people are operating, the self station has no authority and is operated and locked, and if other people are operating, the self station has authority and other stations are operated and locked.
S108-S111, performing bus voltage-loss self-healing operation after finishing user login according to the verified remote control instructions of the user and the workstation.
S108, scheme adjustment:
The scheme editing interface can edit the scheme, provide scheme display information, view the detailed scheme information such as the number of schemes, scheme generation time, operation steps of all the scheme, and priority order of the schemes of the target to-be-transferred line, and adjust the priority of the schemes, and promote or reduce the priority.
Namely, the scheme editing interface can provide the above-mentioned authority checking, operation locking and scheme editing operations.
S109, scheme verification:
the scheme checking interface can check all schemes to be executed and display checking results, and in addition, forced checking passing, priority increasing, priority reducing and single line drawing popping up can be realized according to the provided right-key manual intervention menu.
Checking principle: and checking the remote signaling quality code, the operation mode, the power supply capacity and the safety.
Remote signaling quality code verification of operation switches (circuit breakers and tie switches) of the transfer scheme: setting remote signaling states of a switch, such as remote signaling blocking, remote signaling number, remote signaling bad data, remote signaling working condition exit, remote control blocking, remote signaling non-actual measurement and the like through a bus voltage-loss self-healing human-computer interface;
and (5) checking the operation mode of the scheme: setting a switch state in a real-time library through a bus voltage-loss self-healing man-machine interface, testing whether a remote signaling value of an operation switch (a breaker and a contact switch) is consistent with a remote control value, and checking an operation mode if the remote signaling value is inconsistent with the remote control value;
And (3) checking the power supply capacity of the opposite side line in the transfer supply scheme: setting the current carrying capacity and the current value of a test line in a real-time library through a bus voltage-loss self-healing man-machine interface, testing whether overload occurs on a line on the opposite side of the transfer supply, and if overload occurs, checking the power supply capacity;
in the transfer scheme, the safety of the present side line is checked: considering whether a feeder line carried by a voltage-losing bus is in a fault state or not, judging whether a line to be transferred is in a fault state or not by judging the self-healing starting switch arranged under the feeder line and the signal action of an action signal type, and if the line to be transferred is in the fault state, the safety check is not passed.
Checking results: and the verification is green through the mark, the verification failure is red, and the reason of the verification failure is displayed.
Human intervention: the right click event is realized by a right click menu, which comprises the following steps:
forced checking passes: allowing the scheme which fails to check to pass the check, and displaying the scheme which passes the check on an execution scheme interface by using a green mark, wherein the scheme which does not pass the check is not displayed;
lifting priority: the current line verification execution priority can be improved;
lowering the priority: the current line checking execution priority can be reduced;
and (3) popping up a single line diagram: the single line diagram of the power-losing feeder line can be popped up.
S110, scheme execution:
the scheme execution interface provides operations such as double authority verification of an operator and a guardian, remote control mode selection, information display of a plan to be executed, dynamic display of an execution result and the like, and fault self-healing of the voltage-losing bus is realized through scheme execution.
Checking double authority of operators and guardianship: in order to ensure the execution safety, the operator and the guardian must both have remote control authority and are not identical;
remote control mode: providing two remote control modes for sequential execution and concurrent execution;
sequentially performing: the former scheme is successful or not, the latter scheme is not affected, and a test method is described by taking a circuit A and a circuit B as an example: after the remote control of the circuit breaker of the circuit A fails, the corresponding tie switch does not conduct remote control, and the remote control of other circuits is continued; and after the remote control of the interconnection switch of the line B fails, the remote control of other lines is continued.
And (3) concurrently performing: the remote control command is issued by the communication switch of the former scheme and the circuit breaker of the latter scheme simultaneously when the circuit breaker of the former scheme is successfully controlled and separated, and the remote control command of the circuit breaker of the latter scheme is issued directly after the circuit breaker of the former scheme is failed to be controlled and separated.
Information display to be performed: the scheme information checked by the scheme is listed in a to-be-executed scheme list, and the specific content comprises a scheme before-execution transfer-out line load (A), a scheme before-execution transfer-in line load (A), an operation step, an operator, remote control time, a scheme after-execution transfer-out line load (A) and a scheme after-execution transfer-in line load (A);
And (3) dynamically displaying an execution result: the real-time refreshing display execution process comprises the information of the current execution state, an operator guardian, a program running machine node and the like, the successful control switching-on/switching-off equipment is executed by green marks, the failed control switching-on/switching-off equipment is executed by red marks, and finally the popup window displays the number of bus lines and the number of failed lines in the current round of execution processing.
S111, history query:
and meanwhile, a history inquiry function is provided, and the information of the bus voltage loss self-healing event which is sent in a backtracking way can be recorded and inquired.
The history inquiry interface provides inquiry operation of bus self-healing event, and the user can inquire the bus self-healing event according to the starting time and the keywords and display the voltage-losing feeder line/current, the borrowing feeder line/current, the disconnection switch, the contact switch and the self-healing time.
The history inquiry defaults to show the bus fault self-healing event of the previous month at the current time point, and two inquiry modes of time retrieval and time + fault event keyword retrieval are provided at the same time.
The time search means selecting the corresponding time period, and the default presentation is in the order of time from near to far.
Inquiring according to a time+transformer substation name mode: and (3) screening bus self-healing events by setting time periods and fuzzy inquiry containing station keywords, and sequencing according to the sequence from near to far.
Example 2
The embodiment provides an automatic sensing and quick self-healing system for a medium-voltage bus voltage loss fault, which comprises the following components:
the conversion scheme acquisition module is used for automatically sensing the medium-voltage bus voltage-loss fault according to the bus voltage-loss fault criterion, acquiring voltage-loss bus information and associated load information thereof, and carrying out real-time topology analysis based on the load information associated with the voltage-loss bus to obtain a voltage-loss bus duplicate power conversion scheme;
the conversion scheme processing module is used for carrying out safety check and priority order on the voltage-loss bus duplicate conversion scheme, then carrying out warehousing, sending the voltage-loss bus information to the client to call a bus self-healing human-computer interface, and logging in the user permission check of the bus self-healing human-computer interface;
and the bus voltage-loss self-healing module is used for editing, checking and executing the operation instruction of the transfer scheme through the bus self-healing man-machine interface after the login user permission check is successful, so as to realize the bus voltage-loss self-healing.
Further preferably, the above-mentioned transfer scheme acquisition module is implemented based on the following modules:
a data acquisition module configured to: acquiring data such as a generator, load, bus, station, branch tidal current and the like, and processing the equivalent of the distribution network single line diagram as a main network load node;
The voltage loss monitoring module is configured to: establishing a voltage loss monitoring model according to data such as a generator, a load, a bus, a station, a branch tidal current and the like, and carrying out voltage loss monitoring according to a voltage loss bus judgment rule by depending on a real-time network topology model;
the automatic fault perception judging module is configured to: constructing an automatic fault sensing model according to the voltage loss monitoring data and the model, monitoring fault conditions in real time, and analyzing and calculating detailed line information and a starting and rotating supply scheme of a voltage loss bus;
the conversion scheme processing module and the bus voltage-loss self-healing module are realized based on the bus self-healing processing module;
the bus self-healing processing module is configured to: based on analysis results of the automatic perception judgment model of the failure, a bus self-healing processing model is built, detailed information of a failure bus conversion scheme is displayed in real time, a manual intervention processing operation interface is provided, and self-healing processing such as editing, checking, executing operation and the like is performed on the failure bus through human-computer interaction.
Example 3
The embodiment provides a terminal, which comprises a processor and a storage medium; the storage medium is used for storing instructions;
the processor is operative according to the instructions to perform the steps of the method according to embodiment 1.
Example 4
The present embodiment provides a computer-readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the steps of the method described in embodiment 1.
The invention has the beneficial effects that compared with the prior art:
according to the invention, based on the existing distribution master station system, different system models and data resources are fused, the state of the medium-voltage buses is monitored in real time, the automatic sensing of the faults of the voltage-losing buses is realized according to the faults criteria of the voltage-losing buses, the scheme screening and sorting are carried out according to the safety check rule and the priority sorting principle, meanwhile, the voltage-losing bus message is sent and the bus voltage-losing self-healing man-machine interface is popped up, the quick power-restoring is realized through scheme check and execution operation, the power-restoring time is reduced from the hour level to the minute level, the working modes of manually making schemes, manually remotely controlling the transfer, checking the power supply safety one by one and manually executing one by one are broken, the load transfer of a plurality of power-losing lines can be realized rapidly through the whole-process automation and the remote-controlled operation in a long-distance mode, the operation time is greatly shortened, the power supply reliability is greatly improved, the risk processing efficiency is greatly improved, the pressure of a power distribution person is relieved, and the safe and stable operation of a power grid is ensured.
The present disclosure may be a system, method, and/or computer program product. The computer program product may include a computer readable storage medium having computer readable program instructions embodied thereon for causing a processor to implement aspects of the present disclosure.
The computer readable storage medium may be a tangible device that can hold and store instructions for use by an instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: portable computer disks, hard disks, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static Random Access Memory (SRAM), portable compact disk read-only memory (CD-ROM), digital Versatile Disks (DVD), memory sticks, floppy disks, mechanical coding devices, punch cards or in-groove structures such as punch cards or grooves having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media, as used herein, are not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., optical pulses through fiber optic cables), or electrical signals transmitted through wires.
The computer readable program instructions described herein may be downloaded from a computer readable storage medium to a respective computing/processing device or to an external computer or external storage device over a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmissions, wireless transmissions, routers, firewalls, switches, gateway computers and/or edge servers. The network interface card or network interface in each computing/processing device receives computer readable program instructions from the network and forwards the computer readable program instructions for storage in a computer readable storage medium in the respective computing/processing device.
Computer program instructions for performing the operations of the present disclosure can be assembly instructions, instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, c++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer readable program instructions may be executed entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, aspects of the present disclosure are implemented by personalizing electronic circuitry, such as programmable logic circuitry, field Programmable Gate Arrays (FPGAs), or Programmable Logic Arrays (PLAs), with state information of computer readable program instructions, which can execute the computer readable program instructions.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.
Claims (17)
1. A method for automatically sensing and quickly self-healing a medium-voltage bus voltage loss fault is characterized by comprising the following steps of:
the method comprises the following steps:
step 1, automatically sensing a medium-voltage bus voltage-loss fault according to a bus voltage-loss fault criterion, acquiring voltage-loss bus information and associated load information thereof, and performing real-time topology analysis based on the load information associated with the voltage-loss bus to obtain a voltage-loss bus duplicate power supply scheme;
step 2, carrying out safety check and priority order on the voltage-loss bus duplicate supply scheme, then carrying out warehouse entry, sending the voltage-loss bus information to a client to call a bus self-healing human-computer interface, and carrying out login user permission check on the bus self-healing human-computer interface;
and step 3, after the login user permission verification is successful, editing, verifying and executing the operation instruction of the transfer scheme through the bus self-healing man-machine interface, so as to realize bus voltage-loss self-healing.
2. The automatic sensing and rapid self-healing method for the voltage loss fault of the medium-voltage bus according to claim 1, which is characterized in that:
in the step 1, judging the bus voltage loss fault only once within the same bus processing time interval;
the bus voltage loss fault criterion is as follows:
the following faults exist and the existing fault state lasts for 30s, the bus voltage loss fault is indicated:
the three-phase voltage of the bus jumps and is lower than a threshold value, the bus overhaul state is eliminated, the bus association becomes low-switching current abrupt change and the bus association switching current abrupt change are carried out.
3. The automatic sensing and rapid self-healing method for the voltage loss fault of the medium-voltage bus according to claim 1, which is characterized in that:
in the step 1, the method further comprises the step of clicking and sending out artificially discovered fault voltage-loss bus information through a client graphical interface so as to start self-healing analysis of the voltage-loss bus.
4. The automatic sensing and rapid self-healing method for the voltage loss fault of the medium-voltage bus according to claim 1, which is characterized in that:
in step 1, load information related to a voltage loss bus is obtained through a static equipment breaker association table of a power distribution main station system, wherein the load information comprises a main network load node and a power supply point.
5. The automatic sensing and rapid self-healing method for the voltage loss fault of the medium-voltage bus according to claim 1, which is characterized in that:
In the step 1, a main network load node is used as a local side starting point, a plurality of opposite side power supply points are searched from the main network load node based on a depth-first or breadth-first algorithm, the opposite side power supply points are traced back to the searching starting point, a local side-to-opposite side transfer supply path is obtained, a transfer supply scheme is formed, the transfer supply scheme is traversed, opposite side power supply point information is obtained, the same bus and opposite side bus voltage are filtered to be 0-transfer scheme, transfer supply paths of sides to be transferred and borrowed at two ends of a transfer switch are provided, and a control combination control division device is provided to obtain a voltage-losing bus compound power transfer scheme; each rotary scheme includes a circuit breaker and a tie switch.
6. The automatic sensing and rapid self-healing method for the voltage loss fault of the medium-voltage bus according to claim 1, which is characterized in that:
in step 2, the security check rule includes:
(1) Checking whether a tie switch of the transfer scheme has a signboard with forbidden operation attribute, and if so, filtering the scheme;
(2) Checking whether the switch protection state is abnormal in the transfer path of the transfer scheme, and if yes, filtering the scheme.
7. The automatic sensing and rapid self-healing method for the voltage loss fault of the medium-voltage bus according to claim 1, which is characterized in that:
In step 2, the priority ranking policy is that the priority of the transfer scheme with the following cases is higher than that of the transfer scheme without the corresponding cases: the system comprises three remote switches, different stations of the line on the side opposite to the side, a plurality of remote-controllable switches, double-power-supply user negative, low load capacity, preset preferential contact switch types, no distributed power supply in the transfer path and no overload;
and the priority of the above case is gradually lowered.
8. The automatic sensing and rapid self-healing method for the voltage loss fault of the medium-voltage bus according to claim 1, which is characterized in that:
and 2, writing the transfer scheme subjected to the safety verification and the priority sequencing into a database, sending a bus voltage-loss event alarm to a client, setting an alarm window to prompt a client user of current voltage-loss bus information, recording the voltage-loss bus related information in a voltage-loss bus fault event table, sending the voltage-loss bus information to the client to enable the client to pop up a bus voltage-loss self-healing human-computer interface, and logging in the user permission verification of the bus voltage-loss self-healing human-computer interface.
9. The automatic sensing and rapid self-healing method for the voltage loss fault of the medium-voltage bus according to claim 1, which is characterized in that:
in step 2, remote control permission verification is performed on a user login instruction, specifically:
When a user login instruction is received, checking whether a corresponding bus self-healing human-computer interface login user has remote control permission or not according to a preset remote control permission relation, if so, allowing direct login, and displaying scheme editing, scheme execution and historical query interface information in the bus voltage-losing self-healing human-computer interface.
10. The automatic sensing and rapid self-healing method for the voltage loss fault of the medium-voltage bus according to claim 1, which is characterized in that:
in step 3, performing operation authority verification on the operation instruction, specifically:
when the operation rights are checked, if the operation rights are acquired by the workstation bus self-healing man-machine interface, the operation rights of all other workstation bus self-healing man-machine interfaces are blocked, and if the operation rights are not acquired by the workstation bus self-healing man-machine interface, the operation rights are opened to the workstation bus self-healing man-machine interface which is currently acquiring the operation rights;
and allowing the bus self-healing man-machine interface which acquires the operation authority to operate the conversion scheme, and realizing bus voltage-loss self-healing through an interface operation instruction.
11. The automatic sensing and rapid self-healing method for the voltage loss fault of the medium-voltage bus according to claim 1, which is characterized in that:
in step 3, the operation instruction comprises a scheme editing instruction, a scheme checking instruction and a scheme executing instruction;
The scheme editing instruction comprises: checking the number of all schemes, scheme generation time, operation steps of all the schemes to be transferred, and priority ordering information of each scheme of a target scheme to be transferred, and carrying out a scheme priority adjustment instruction;
the scheme checking instruction comprises the following steps: checking all the transfer schemes to be executed, displaying the checking result and instructions of the checking operation of the manual intervention scheme;
the scheme execution instruction comprises: the method comprises the steps of checking double authorities of an operator and a guardian, selecting a remote control mode, displaying information to be executed and dynamically displaying an execution result, and realizing the self-healing of faults of the voltage-losing bus by executing the instruction through the scheme.
12. The automatic sensing and rapid self-healing method for the voltage loss fault of the medium-voltage bus according to claim 11, wherein the method comprises the following steps:
the manual intervention scheme checking operation instruction comprises the following steps:
forced check pass instruction: the proposal that the verification fails is verified and displayed manually;
a raise priority instruction: artificially improving the current line verification execution priority;
a lower priority instruction: artificially reducing the current line verification execution priority;
ejecting a single line drawing instruction: and a single line diagram of the power-losing feeder line is popped up by manual operation.
13. The automatic sensing and rapid self-healing method for the voltage loss fault of the medium-voltage bus according to claim 11, wherein the method comprises the following steps:
the dual authority check of the operator and the guardian is as follows: the operation person and the guardian both have remote control authority and are different from each other, and the verification is passed, wherein the identities of the operation person and the guardian are preset through a bus decompression self-healing human-computer interface;
the remote control mode is selected as follows: selecting a sequential execution remote control mode or a concurrent execution remote control mode; the sequential execution remote control mode is: whether the former scheme is successful or not does not affect the execution of the latter scheme; the concurrent execution remote control mode is as follows: for the time between two continuous schemes, after the control and separation of the breaker of the former scheme are successful, the contact switch of the former scheme and the breaker of the latter scheme issue remote control instructions simultaneously, and after the control and separation of the breaker of the former scheme are failed, the remote control instructions of the breaker of the latter scheme are issued directly;
the information to be executed is displayed as follows: the scheme information checked by the scheme is listed in a to-be-executed scheme list for display, and the specific information comprises the load of the line before the scheme is executed, the operation steps, operators, remote control time, the load of the line after the scheme is executed and the load of the line after the scheme is executed;
The execution result is dynamically displayed as follows: the real-time refreshing and displaying executing process comprises the current executing state, the node information of an operator, a guardian and a program running machine, and identifies the successful executing control switching-on and switching-off equipment and the failed executing control switching-on and switching-off equipment, and finally, the popup window displays the number of bus lines and the number of failed executing processing of the round.
14. The automatic sensing and rapid self-healing method for the voltage loss fault of the medium-voltage bus according to claim 1, which is characterized in that:
in step 3, the operation instruction further includes an instruction for performing history inquiry on the bus self-healing event, specifically:
inquiring a bus self-healing event according to the starting time and the keywords, and displaying the voltage-losing feeder line/current, the borrowed feeder line/current, the disconnection switch, the interconnection switch and the self-healing time;
the history inquiry defaults to show the bus fault self-healing event of the previous month at the current time point, and simultaneously, the two inquiry modes of time retrieval and time + fault event keyword retrieval are divided;
the time retrieval means that the default display is in the sequence from near to far according to time for the selected time period;
inquiring according to a time+transformer substation name mode: and screening bus self-healing events through the set time period and fuzzy inquiry containing station keywords, and sequencing and displaying according to the sequence from near to far.
15. An automatic sensing and rapid self-healing system for a medium voltage bus voltage loss fault, for implementing the method of any one of claims 1 to 14, characterized in that: the system comprises:
the conversion scheme acquisition module is used for automatically sensing the medium-voltage bus voltage-loss fault according to the bus voltage-loss fault criterion, acquiring voltage-loss bus information and associated load information thereof, and carrying out real-time topology analysis based on the load information associated with the voltage-loss bus to obtain a voltage-loss bus duplicate power conversion scheme;
the conversion scheme processing module is used for carrying out safety check and priority order on the voltage-loss bus duplicate conversion scheme, then carrying out warehousing, sending the voltage-loss bus information to the client to call a bus self-healing human-computer interface, and logging in the user permission check of the bus self-healing human-computer interface;
and the bus voltage-loss self-healing module is used for editing, checking and executing the operation instruction of the transfer scheme through the bus self-healing man-machine interface after the login user permission check is successful, so as to realize the bus voltage-loss self-healing.
16. A terminal comprising a processor and a storage medium; the method is characterized in that:
the storage medium is used for storing instructions;
the processor being operative according to the instructions to perform the steps of the method according to any one of claims 1-14.
17. A computer readable storage medium having stored thereon a computer program, characterized in that the program when executed by a processor realizes the steps of the method according to any of claims 1-14.
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