CN117495346A - Method, system, terminal and storage medium for controlling isolating switch of low-voltage distribution station - Google Patents
Method, system, terminal and storage medium for controlling isolating switch of low-voltage distribution station Download PDFInfo
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Abstract
The invention relates to the technical field of power supply, and particularly provides a control method, a system, a terminal and a storage medium for a disconnecting switch of a low-voltage power distribution station, wherein the control method comprises the following steps: collecting monitoring data and historical maintenance data of key equipment in a station; generating a maintenance task based on the monitoring data and the historical maintenance data, and caching the maintenance task to a task queue, wherein the maintenance task comprises maintenance line information; dividing the maintenance lines belonging to the upstream and downstream lines and maintenance tasks into the same task group, and adjusting the positions of the maintenance tasks belonging to the same task group in a task queue to be close to each other; and sequentially executing maintenance tasks in the task queues, and granting operation authorities to the isolating switches on the corresponding maintenance routes when executing the maintenance tasks. The invention manages the operation authority of the isolating switch through management generation maintenance tasks based on the application scene of the isolating switch, thereby realizing the accurate control of all the isolating switches in the station and avoiding the unstable influence of misoperation of the isolating switch on the power grid.
Description
Technical Field
The invention belongs to the technical field of power supply, and particularly relates to a control method, a system, a terminal and a storage medium for a disconnecting switch of a low-voltage power distribution station.
Background
The low-voltage distribution consists of a distribution substation, a high-voltage distribution line, a distribution transformer, a low-voltage distribution line and corresponding control protection equipment. The low-voltage power distribution system comprises a low-voltage power distribution network, and a disconnecting switch is arranged on part of nodes of the low-voltage power distribution network. An Isolating switch (Isolating switch) is a switching device mainly used for Isolating a power supply, switching operation and switching on and off a small current circuit, and has no arc extinguishing function. The disconnector cannot operate with load: the device cannot operate with rated load or large load, cannot split and combine load current and short-circuit current, but can operate with small load and no-load lines with an arc extinguishing chamber. Once the disconnecting switch is operated, safety accidents can be caused.
The related control method for the isolating switch is to lock the isolating switch, and only when the load end is empty, the isolating switch can be unlocked, so that the method is suitable for manual operation. In some grid systems, automatic control of the disconnector has been achieved, for example by controlling the power supply of the disconnector to switch it automatically, in automatic control systems misoperation cannot be avoided by locking the disconnector. And the application scene of the isolating switch is line maintenance, if the target switch is selected incorrectly, even if the load switch is turned off, the mistaken power failure is caused, and unstable factors are brought to the operation of the power distribution network.
Disclosure of Invention
In order to solve the above-mentioned shortcomings of the prior art, the present invention provides a control method, system, terminal and storage medium for a low-voltage substation isolating switch, so as to solve the above-mentioned technical problems.
In a first aspect, the present invention provides a method for controlling an isolating switch of a low-voltage power distribution station, including:
collecting monitoring data and historical maintenance data of key equipment in a station;
generating a maintenance task based on the monitoring data and the historical maintenance data, and caching the maintenance task to a task queue, wherein the maintenance task comprises maintenance line information;
dividing the maintenance lines belonging to the upstream and downstream lines and maintenance tasks into the same task group, and adjusting the positions of the maintenance tasks belonging to the same task group in a task queue to be close to each other;
and sequentially executing maintenance tasks in the task queues, and granting operation authorities to the isolating switches on the corresponding maintenance routes when executing the maintenance tasks.
In an alternative embodiment, generating a maintenance task based on the monitoring data and the historical maintenance data, and caching the maintenance task to a task queue, wherein the maintenance task includes maintenance line information, and the method includes:
monitoring data of key equipment in the station are sequentially converted into time sequences according to the acquisition time;
calculating the permutation entropy of the time sequence, and judging whether the key equipment has faults or not based on the permutation entropy algorithm;
if the key equipment has a fault, acquiring a line where the key equipment is located, and generating an emergency maintenance task for the line;
analyzing the previous maintenance time of each line in the historical maintenance data, and generating regular maintenance tasks for the lines periodically based on the previous maintenance time and the set maintenance period.
In an alternative embodiment, the method further comprises:
recording the generation time of the emergency maintenance task of each line;
and screening out the minimum interval time from the generation time of the emergency task, and adjusting the maintenance period of the line based on the minimum interval time.
In an alternative embodiment, dividing the maintenance lines belonging to the upstream and downstream lines and the maintenance tasks into the same task group, and adjusting the positions of the maintenance tasks belonging to the same task group in the task queue to be close to each other includes:
analyzing maintenance tasks cached in the task queue, and setting urgent task weights and conventional task weights;
calculating the product of the waiting time of the maintenance tasks and the corresponding weight, and sequencing the maintenance tasks from large to small according to the product to obtain a first arrangement sequence;
dividing maintenance tasks of the maintenance lines belonging to the upstream and downstream lines into the same group;
counting the maximum product of each maintenance task in the maintenance task group, and setting the maximum product as a marking value of the maintenance task group;
the maintenance tasks in the task queue are aggregated into maintenance task groups, the execution time of the same maintenance tasks is the same, and the maintenance task groups are ordered from big to small according to the mark value.
In an alternative embodiment, maintenance tasks in the task queues are sequentially executed, and operation authorities of disconnecting switches on corresponding maintenance routes are granted when the maintenance tasks are executed, including:
based on the preset corresponding relation between the circuit and the isolating switch and the load switch;
acquiring a target isolating switch and a target load switch corresponding to a maintenance line;
the target load switch is controlled to be disconnected, and load line parameters fed back by a sensor are obtained;
confirming that a target load switch is disconnected based on the load line parameters;
and releasing the locking state of the target isolating switch.
In an alternative embodiment, the method further comprises:
maintaining the states of all isolating switches in the station to a data list, wherein the states are any one of a locking state and an unlocking state;
receiving an operation instruction of a target isolating switch, wherein the operation instruction is on or off;
acquiring the state of the target isolating switch from a data list, and if the state is a locking state, not executing the operation instruction; and if the state is the non-locking state, executing the operation instruction.
In an alternative embodiment, the method further comprises:
record data is generated in the execution process of the maintenance task, wherein the record data comprises a maintenance line, whether the maintenance task is an emergency maintenance task, a starting time and an ending time.
In a second aspect, the present invention provides a low voltage substation disconnector control system comprising:
the data acquisition module is used for acquiring monitoring data and historical maintenance data of key equipment in the station;
the task generation module is used for generating maintenance tasks based on the monitoring data and the historical maintenance data, caching the maintenance tasks to a task queue, and enabling the maintenance tasks to contain maintenance line information;
the task adjusting module is used for dividing the maintenance lines belonging to the upstream and downstream lines and the maintenance tasks into the same task group and adjusting the positions of the maintenance tasks belonging to the same task group in the task queue to be close to each other;
and the permission control module is used for sequentially executing maintenance tasks in the task queues, and granting operation permissions to the isolating switches on the corresponding maintenance routes when the maintenance tasks are executed.
In an alternative embodiment, generating a maintenance task based on the monitoring data and the historical maintenance data, and caching the maintenance task to a task queue, wherein the maintenance task includes maintenance line information, and the method includes:
monitoring data of key equipment in the station are sequentially converted into time sequences according to the acquisition time;
calculating the permutation entropy of the time sequence, and judging whether the key equipment has faults or not based on the permutation entropy algorithm;
if the key equipment has a fault, acquiring a line where the key equipment is located, and generating an emergency maintenance task for the line;
analyzing the previous maintenance time of each line in the historical maintenance data, and generating regular maintenance tasks for the lines periodically based on the previous maintenance time and the set maintenance period.
In an alternative embodiment, the system further comprises:
recording the generation time of the emergency maintenance task of each line;
and screening out the minimum interval time from the generation time of the emergency task, and adjusting the maintenance period of the line based on the minimum interval time.
In an alternative embodiment, dividing the maintenance lines belonging to the upstream and downstream lines and the maintenance tasks into the same task group, and adjusting the positions of the maintenance tasks belonging to the same task group in the task queue to be close to each other includes:
analyzing maintenance tasks cached in the task queue, and setting urgent task weights and conventional task weights;
calculating the product of the waiting time of the maintenance tasks and the corresponding weight, and sequencing the maintenance tasks from large to small according to the product to obtain a first arrangement sequence;
dividing maintenance tasks of the maintenance lines belonging to the upstream and downstream lines into the same group;
counting the maximum product of each maintenance task in the maintenance task group, and setting the maximum product as a marking value of the maintenance task group;
the maintenance tasks in the task queue are aggregated into maintenance task groups, the execution time of the same maintenance tasks is the same, and the maintenance task groups are ordered from big to small according to the mark value.
In an alternative embodiment, maintenance tasks in the task queues are sequentially executed, and operation authorities of disconnecting switches on corresponding maintenance routes are granted when the maintenance tasks are executed, including:
based on the preset corresponding relation between the circuit and the isolating switch and the load switch;
acquiring a target isolating switch and a target load switch corresponding to a maintenance line;
the target load switch is controlled to be disconnected, and load line parameters fed back by a sensor are obtained;
confirming that a target load switch is disconnected based on the load line parameters;
and releasing the locking state of the target isolating switch.
In an alternative embodiment, the system further comprises:
maintaining the states of all isolating switches in the station to a data list, wherein the states are any one of a locking state and an unlocking state;
receiving an operation instruction of a target isolating switch, wherein the operation instruction is on or off;
acquiring the state of the target isolating switch from a data list, and if the state is a locking state, not executing the operation instruction; and if the state is the non-locking state, executing the operation instruction.
In an alternative embodiment, the system further comprises:
record data is generated in the execution process of the maintenance task, wherein the record data comprises a maintenance line, whether the maintenance task is an emergency maintenance task, a starting time and an ending time.
In a third aspect, a terminal is provided, including:
a processor, a memory, wherein,
the memory is used for storing a computer program,
the processor is configured to call and run the computer program from the memory, so that the terminal performs the method of the terminal as described above.
In a fourth aspect, there is provided a computer storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the method of the above aspects.
The control method, the system, the terminal and the storage medium for the disconnecting switch of the low-voltage power distribution station have the advantages that the maintenance task is generated through management based on the application scene of the disconnecting switch, and the operating authority management is carried out on the disconnecting switch based on the maintenance task, so that the accurate control of all the disconnecting switches in the station is realized, and the unstable influence of misoperation of the disconnecting switch on a power grid is avoided.
In addition, the invention has reliable design principle, simple structure and very wide application prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic flow chart of a method of one embodiment of the invention.
FIG. 2 is a schematic block diagram of a system of one embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The control method of the low-voltage substation isolating switch provided by the embodiment of the invention is executed by computer equipment, and correspondingly, the control system of the low-voltage substation isolating switch operates in the computer equipment.
FIG. 1 is a schematic flow chart of a method of one embodiment of the invention. The execution body of fig. 1 may be a low-voltage substation isolating switch control system. The order of the steps in the flow chart may be changed and some may be omitted according to different needs.
As shown in fig. 1, the method includes:
step 110, collecting monitoring data and historical maintenance data of key equipment in a station;
step 120, generating a maintenance task based on the monitoring data and the historical maintenance data, and caching the maintenance task to a task queue, wherein the maintenance task comprises maintenance line information;
130, dividing the maintenance lines belonging to the upstream and downstream lines and the maintenance tasks into the same task group, and adjusting the positions of the maintenance tasks belonging to the same task group in a task queue to be close to each other;
and 140, sequentially executing maintenance tasks in the task queues, and granting operation authorities to the isolating switches on the corresponding maintenance routes when executing the maintenance tasks.
In order to facilitate understanding of the present invention, the principle of the low-voltage substation isolating switch control method according to the present invention is used in the following to further describe the low-voltage substation isolating switch control method according to the present invention in combination with the process of controlling and managing the low-voltage substation isolating switch in the embodiment.
Specifically, the control method of the isolating switch of the low-voltage power distribution station comprises the following steps:
s1, monitoring data and historical maintenance data of key equipment in the station are collected.
The distribution network within the station is divided into a plurality of lines by associated disconnectors.
Key devices such as high voltage distribution line master nodes, distribution transformers, low voltage distribution line master nodes, etc.
Monitoring data are collected through a voltage sensor and a current sensor at regular intervals.
And periodically collecting historical maintenance data of each line, namely the previous maintenance time of each line, making a difference between the collected previous maintenance time and the system time, comparing the difference with a set period, and judging that maintenance tasks need to be generated on the lines when the time difference reaches the period.
S2, generating a maintenance task based on the monitoring data and the historical maintenance data, and caching the maintenance task to a task queue, wherein the maintenance task comprises maintenance line information.
S201, monitoring data of key equipment in the station are sequentially converted into a time sequence according to the acquisition time; calculating the permutation entropy of the time sequence, and judging whether the key equipment has faults or not based on the permutation entropy algorithm; if the key equipment has a fault, acquiring a line where the key equipment is located, and generating an emergency maintenance task for the line.
The calculation method of the permutation entropy is as follows:
1. an embedding dimension m (i.e., m-neighbor) and a time delay t are specified for phase space reconstruction.
2. K subsequences are obtained, k=n- (m-1) t, each subsequence being:
(1) x1, x1+t, ... , x1+(m-1)t
(2) x2, x2+t, ... , x2+(m-1)t
(3) ...
(4) xk, xk+t, ... , xk+(m-1)t
3. and converts it into an arrangement of size relationships (k, sharing the m
4. The probability P of each size relationship permutation, P (permutation) =number of occurrences of the permutation/k,
5. information entropy of these probabilities is calculated:
and setting a standard value, and judging that the fault risk exists if the information entropy exceeds the standard value.
S202, analyzing the previous maintenance time of each line in the historical maintenance data, and periodically generating a conventional maintenance task for the line based on the previous maintenance time and the set maintenance period.
Recording the generation time of the emergency maintenance task of each line; and screening out the minimum interval time from the generation time of the emergency task, and adjusting the maintenance period of the line based on the minimum interval time.
For example, if the minimum interval time of a line for emergency tasks is 15 days, the maintenance period is set to be 14 days.
S203, comparing the monitoring data of the key equipment with a set risk threshold value, if the monitoring data exceeds the risk threshold value, indicating that the fault has occurred, immediately generating a special maintenance task for the line, and immediately executing the special maintenance task after the generation without participating in subsequent sequencing operation.
S3, dividing the maintenance lines belonging to the upstream and downstream lines and the maintenance tasks into the same task group, and adjusting the positions of the maintenance tasks belonging to the same task group in the task queue to be close to each other.
Analyzing maintenance tasks cached in the task queue, and setting urgent task weights and conventional task weights; calculating the product of the waiting time of the maintenance tasks and the corresponding weight, and sequencing the maintenance tasks from large to small according to the product to obtain a first arrangement sequence; dividing maintenance tasks of the maintenance lines belonging to the upstream and downstream lines into the same group; counting the maximum product of each maintenance task in the maintenance task group, and setting the maximum product as a marking value of the maintenance task group; the maintenance tasks in the task queue are aggregated into maintenance task groups, the execution time of the same maintenance tasks is the same, and the maintenance task groups are ordered from big to small according to the mark value.
For example, the task queue includes urgent task 1 (waiting for 20 min), regular task 2 (waiting for 10 min), regular task 3 (waiting for 30 min), urgent task 4 (waiting for 10 min), and regular task 5 (waiting for 5 min). Urgent weight 2, normal weight 1, then the corresponding product is urgent task 1:40, normal task 2:10, normal task 3:30, urgent task 4:20, conventional task 5:5.
If the urgent task 1, the regular task 3 and the regular task 5 are in the group 1, the regular task 2 and the urgent task 4 are in the group 2, the marking value of the group 1 is 40, the marking value of the group 2 is 20, and the task queues are ordered as follows:
the emergency task 1, the regular task 3, the regular task 5, the emergency task 4 and the regular task 2 are sequentially arranged.
The maintenance task group is arranged to execute maintenance on the same area as much as possible, so that the line maintenance time is shortened, and the influence of power-off maintenance is reduced to the minimum.
S4, sequentially executing maintenance tasks in the task queues, and granting operation authorities to the isolating switches on the corresponding maintenance routes when executing the maintenance tasks.
Based on the preset corresponding relation between the circuit and the isolating switch and the load switch; acquiring a target isolating switch and a target load switch corresponding to a maintenance line; the target load switch is controlled to be disconnected, and load line parameters fed back by a sensor are obtained; confirming that a target load switch is disconnected based on the load line parameters; and releasing the locking state of the target isolating switch.
The disconnecting switch is subjected to authority management in the form of a mark lock, and the management and the monitoring of the load switch are combined, so that the comprehensive monitoring of the disconnecting switch from scene requirements to actual operation conditions is realized, and misoperation of the disconnecting switch is avoided.
Record data is generated in the execution process of the maintenance task, wherein the record data comprises a maintenance line, whether the maintenance task is an emergency maintenance task, a starting time and an ending time.
In some embodiments, the low voltage substation isolation switch control system may include a plurality of functional modules comprised of computer program segments. The computer program of the individual program segments in the low voltage substation disconnector control system may be stored in a memory of a computer device and executed by at least one processor to perform (see in detail fig. 1 for description) the functions of the low voltage substation disconnector control.
In this embodiment, the low-voltage substation isolating switch control system may be divided into a plurality of functional modules according to the functions performed by the low-voltage substation isolating switch control system, as shown in fig. 2. The functional modules of system 200 may include: a data acquisition module 210, a task generation module 220, a task adjustment module 230, and a rights control module 240. The module referred to in the present invention refers to a series of computer program segments capable of being executed by at least one processor and of performing a fixed function, stored in a memory. In the present embodiment, the functions of the respective modules will be described in detail in the following embodiments.
The data acquisition module is used for acquiring monitoring data and historical maintenance data of key equipment in the station;
the task generation module is used for generating maintenance tasks based on the monitoring data and the historical maintenance data, caching the maintenance tasks to a task queue, and enabling the maintenance tasks to contain maintenance line information;
the task adjusting module is used for dividing the maintenance lines belonging to the upstream and downstream lines and the maintenance tasks into the same task group and adjusting the positions of the maintenance tasks belonging to the same task group in the task queue to be close to each other;
and the permission control module is used for sequentially executing maintenance tasks in the task queues, and granting operation permissions to the isolating switches on the corresponding maintenance routes when the maintenance tasks are executed.
Optionally, as an embodiment of the present invention, generating a maintenance task based on the monitoring data and the historical maintenance data, and caching the maintenance task into a task queue, where the maintenance task includes maintenance line information, including:
monitoring data of key equipment in the station are sequentially converted into time sequences according to the acquisition time;
calculating the permutation entropy of the time sequence, and judging whether the key equipment has faults or not based on the permutation entropy algorithm;
if the key equipment has a fault, acquiring a line where the key equipment is located, and generating an emergency maintenance task for the line;
analyzing the previous maintenance time of each line in the historical maintenance data, and generating regular maintenance tasks for the lines periodically based on the previous maintenance time and the set maintenance period.
Optionally, as an embodiment of the present invention, the system further includes:
recording the generation time of the emergency maintenance task of each line;
and screening out the minimum interval time from the generation time of the emergency task, and adjusting the maintenance period of the line based on the minimum interval time.
Optionally, as an embodiment of the present invention, dividing the maintenance line belonging to the upstream line and the downstream line and the maintenance task into the same task group, and adjusting the position of the maintenance task belonging to the same task group in the task queue to be a close position, includes:
analyzing maintenance tasks cached in the task queue, and setting urgent task weights and conventional task weights;
calculating the product of the waiting time of the maintenance tasks and the corresponding weight, and sequencing the maintenance tasks from large to small according to the product to obtain a first arrangement sequence;
dividing maintenance tasks of the maintenance lines belonging to the upstream and downstream lines into the same group;
counting the maximum product of each maintenance task in the maintenance task group, and setting the maximum product as a marking value of the maintenance task group;
the maintenance tasks in the task queue are aggregated into maintenance task groups, the execution time of the same maintenance tasks is the same, and the maintenance task groups are ordered from big to small according to the mark value.
Optionally, as an embodiment of the present invention, the maintenance tasks in the task queues are sequentially executed, and when the maintenance tasks are executed, operation authorities to the isolating switches on the corresponding maintenance routes are granted, including:
based on the preset corresponding relation between the circuit and the isolating switch and the load switch;
acquiring a target isolating switch and a target load switch corresponding to a maintenance line;
the target load switch is controlled to be disconnected, and load line parameters fed back by a sensor are obtained;
confirming that a target load switch is disconnected based on the load line parameters;
and releasing the locking state of the target isolating switch.
Optionally, as an embodiment of the present invention, the system further includes:
maintaining the states of all isolating switches in the station to a data list, wherein the states are any one of a locking state and an unlocking state;
receiving an operation instruction of a target isolating switch, wherein the operation instruction is on or off;
acquiring the state of the target isolating switch from a data list, and if the state is a locking state, not executing the operation instruction; and if the state is the non-locking state, executing the operation instruction.
Optionally, as an embodiment of the present invention, the system further includes:
record data is generated in the execution process of the maintenance task, wherein the record data comprises a maintenance line, whether the maintenance task is an emergency maintenance task, a starting time and an ending time.
Fig. 3 is a schematic structural diagram of a terminal 300 according to an embodiment of the present invention, where the terminal 300 may be used to execute the method for controlling the disconnecting switch of the low-voltage substation according to the embodiment of the present invention.
The terminal 300 may include: a processor 310, a memory 320 and a communication unit 330. The components may communicate via one or more buses, and it will be appreciated by those skilled in the art that the configuration of the server as shown in the drawings is not limiting of the invention, as it may be a bus-like structure, a star-like structure, or include more or fewer components than shown, or may be a combination of certain components or a different arrangement of components.
The memory 320 may be used to store instructions for execution by the processor 310, and the memory 320 may be implemented by any type of volatile or non-volatile memory terminal or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk. The execution of the instructions in memory 320, when executed by processor 310, enables terminal 300 to perform some or all of the steps in the method embodiments described below.
The processor 310 is a control center of the storage terminal, connects various parts of the entire electronic terminal using various interfaces and lines, and performs various functions of the electronic terminal and/or processes data by running or executing software programs and/or modules stored in the memory 320, and invoking data stored in the memory. The processor may be comprised of an integrated circuit (Integrated Circuit, simply referred to as an IC), for example, a single packaged IC, or may be comprised of a plurality of packaged ICs connected to the same function or different functions. For example, the processor 310 may include only a central processing unit (Central Processing Unit, simply CPU). In the embodiment of the invention, the CPU can be a single operation core or can comprise multiple operation cores.
And a communication unit 330 for establishing a communication channel so that the storage terminal can communicate with other terminals. Receiving user data sent by other terminals or sending the user data to other terminals.
The present invention also provides a computer storage medium in which a program may be stored, which program may include some or all of the steps in the embodiments provided by the present invention when executed. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), a random-access memory (random access memory, RAM), or the like.
Therefore, the invention is based on the application scene of the isolating switch, generates the maintenance task through management, and manages the operation authority of the isolating switch based on the maintenance task, thereby realizing the accurate control of all the isolating switches in the station, avoiding the unstable influence of the misoperation of the isolating switch on the power grid, and the technical effect achieved by the embodiment can be seen from the description above and is not repeated here.
It will be apparent to those skilled in the art that the techniques of embodiments of the present invention may be implemented in software plus a necessary general purpose hardware platform. Based on such understanding, the technical solution in the embodiments of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium such as a U-disc, a mobile hard disc, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk or an optical disk, etc. various media capable of storing program codes, including several instructions for causing a computer terminal (which may be a personal computer, a server, or a second terminal, a network terminal, etc.) to execute all or part of the steps of the method described in the embodiments of the present invention.
The same or similar parts between the various embodiments in this specification are referred to each other. In particular, for the terminal embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and reference should be made to the description in the method embodiment for relevant points.
In the several embodiments provided by the present invention, it should be understood that the disclosed systems and methods may be implemented in other ways. For example, the system embodiments described above are merely illustrative, e.g., the division of the modules is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple modules or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with respect to each other may be through some interface, indirect coupling or communication connection of systems or modules, electrical, mechanical, or other form.
The modules described as separate components may or may not be physically separate, and components shown as modules may or may not be physical modules, i.e., may be located in one place, or may be distributed over a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional module in each embodiment of the present invention may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module.
Although the present invention has been described in detail by way of preferred embodiments with reference to the accompanying drawings, the present invention is not limited thereto. Various equivalent modifications and substitutions may be made in the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and it is intended that all such modifications and substitutions be within the scope of the present invention/be within the scope of the present invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A method for controlling a low voltage substation disconnector, comprising:
collecting monitoring data and historical maintenance data of key equipment in a station;
generating a maintenance task based on the monitoring data and the historical maintenance data, and caching the maintenance task to a task queue, wherein the maintenance task comprises maintenance line information;
dividing the maintenance lines belonging to the upstream and downstream lines and maintenance tasks into the same task group, and adjusting the positions of the maintenance tasks belonging to the same task group in a task queue to be close to each other;
and sequentially executing maintenance tasks in the task queues, and granting operation authorities to the isolating switches on the corresponding maintenance routes when executing the maintenance tasks.
2. The method of claim 1, wherein generating maintenance tasks based on the monitoring data and historical maintenance data and caching the maintenance tasks to a task queue, the maintenance tasks including maintenance line information, comprises:
monitoring data of key equipment in the station are sequentially converted into time sequences according to the acquisition time;
calculating the permutation entropy of the time sequence, and judging whether the key equipment has faults or not based on the permutation entropy algorithm;
if the key equipment has a fault, acquiring a line where the key equipment is located, and generating an emergency maintenance task for the line;
analyzing the previous maintenance time of each line in the historical maintenance data, and generating regular maintenance tasks for the lines periodically based on the previous maintenance time and the set maintenance period.
3. The method according to claim 2, wherein the method further comprises:
recording the generation time of the emergency maintenance task of each line;
and screening out the minimum interval time from the generation time of the emergency task, and adjusting the maintenance period of the line based on the minimum interval time.
4. The method of claim 2, wherein dividing the maintenance lines belonging to the upstream and downstream lines and the maintenance tasks into the same task group, and adjusting the positions of the maintenance tasks belonging to the same task group in the task queue to be immediately adjacent positions, comprises:
analyzing maintenance tasks cached in the task queue, and setting urgent task weights and conventional task weights;
calculating the product of the waiting time of the maintenance tasks and the corresponding weight, and sequencing the maintenance tasks from large to small according to the product to obtain a first arrangement sequence;
dividing maintenance tasks of the maintenance lines belonging to the upstream and downstream lines into the same group;
counting the maximum product of each maintenance task in the maintenance task group, and setting the maximum product as a marking value of the maintenance task group;
the maintenance tasks in the task queue are aggregated into maintenance task groups, the execution time of the same maintenance tasks is the same, and the maintenance task groups are ordered from big to small according to the mark value.
5. The method of claim 1, wherein the maintenance tasks in the task queues are performed sequentially, wherein the maintenance tasks are performed by granting operation rights to the disconnectors on the corresponding maintenance routes, comprising:
based on the preset corresponding relation between the circuit and the isolating switch and the load switch;
acquiring a target isolating switch and a target load switch corresponding to a maintenance line;
the target load switch is controlled to be disconnected, and load line parameters fed back by a sensor are obtained;
confirming that a target load switch is disconnected based on the load line parameters;
and releasing the locking state of the target isolating switch.
6. The method of claim 5, wherein the method further comprises:
maintaining the states of all isolating switches in the station to a data list, wherein the states are any one of a locking state and an unlocking state;
receiving an operation instruction of a target isolating switch, wherein the operation instruction is on or off;
acquiring the state of the target isolating switch from a data list, and if the state is a locking state, not executing the operation instruction; and if the state is the non-locking state, executing the operation instruction.
7. The method according to claim 1, wherein the method further comprises:
record data is generated in the execution process of the maintenance task, wherein the record data comprises a maintenance line, whether the maintenance task is an emergency maintenance task, a starting time and an ending time.
8. A low voltage substation isolation switch control system, comprising:
the data acquisition module is used for acquiring monitoring data and historical maintenance data of key equipment in the station;
the task generation module is used for generating maintenance tasks based on the monitoring data and the historical maintenance data, caching the maintenance tasks to a task queue, and enabling the maintenance tasks to contain maintenance line information;
the task adjusting module is used for dividing the maintenance lines belonging to the upstream and downstream lines and the maintenance tasks into the same task group and adjusting the positions of the maintenance tasks belonging to the same task group in the task queue to be close to each other;
and the permission control module is used for sequentially executing maintenance tasks in the task queues, and granting operation permissions to the isolating switches on the corresponding maintenance routes when the maintenance tasks are executed.
9. A terminal, comprising:
the memory is used for storing a low-voltage power distribution station isolating switch control program;
a processor for implementing the steps of the low voltage substation disconnector control method according to any one of claims 1-7 when executing said low voltage substation disconnector control program.
10. A computer readable storage medium storing a computer program, characterized in that the readable storage medium has stored thereon a low voltage substation disconnector control program, which when executed by a processor, implements the steps of the low voltage substation disconnector control method according to any one of claims 1-7.
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| CN202311376240.7A CN117495346A (en) | 2023-10-23 | 2023-10-23 | Method, system, terminal and storage medium for controlling isolating switch of low-voltage distribution station |
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