CN108181546B - Power distribution network fault positioning method and device and terminal equipment - Google Patents
Power distribution network fault positioning method and device and terminal equipment Download PDFInfo
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- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/088—Aspects of digital computing
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Abstract
The invention is suitable for the technical field of electric power big data application, and provides a positioning method, a positioning device and terminal equipment for a power distribution network fault, wherein the positioning method, the positioning device and the terminal equipment comprise the following steps: monitoring whether power failure event information reported by an acquisition terminal is received; if the power failure information reported by the acquisition terminal is received, judging whether the acquisition terminal is in a blacklist or not; if the acquisition terminal is in the blacklist, judging the power failure event information reported by the acquisition terminal as invalid information; and if the acquisition terminal is not in the blacklist, judging that the power supply area to which the acquisition terminal belongs has power failure. When a certain area has power failure, the fault position of the power distribution network can be timely and accurately acquired without call repair of a user, the difficulty in finding the fault of the power distribution network and the power failure time are greatly reduced, and the satisfaction degree of the user is improved.
Description
Technical Field
The invention belongs to the technical field of electric power big data application, and particularly relates to a power distribution network fault positioning method, a power distribution network fault positioning device and terminal equipment.
Background
The power distribution network is an important part of a power grid, is generally a tree-shaped network and mainly comprises lines, circuit breakers, fuses and power supply areas. In a power grid, a distribution line outlet breaker and a plurality of branch power supply line breakers are usually arranged, and when the distribution line outlet breaker is in an open circuit state, all branch power supply lines are powered off; when the branch power supply circuit breaker is in an open circuit state, only the branch power supply circuit is powered off. Each branch power supply circuit comprises a plurality of power supply areas, each power supply area is connected with a branch power supply circuit breaker through a fuse, and when the fuse is disconnected, the power supply areas are powered off. Due to the fact that the operation environment is severe and the equipment is old, according to statistics, 80% of user power outages are caused by power distribution network faults.
In the prior art, a worker can only acquire the state of a distribution line outlet circuit breaker, but cannot acquire the states of a branch power supply line circuit breaker and a power supply station area fuse. In other words, when a certain branch power supply line or a certain power supply station area has a fault, a worker can only report the fault through a user in the power failure area, and when no person reports the fault, the fault position of the power distribution network cannot be timely and accurately acquired, so that the difficulty in finding the fault of the power distribution network and the power failure time are greatly increased, and the satisfaction degree of the user is reduced.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method, a device and a terminal device for locating a power distribution network fault, so as to solve the problem in the prior art that a fault location of a power distribution network cannot be timely and accurately obtained.
A first aspect of an embodiment of the present invention provides a method for locating a power distribution network fault, including:
monitoring whether power failure event information reported by an acquisition terminal is received;
if the power failure information reported by the acquisition terminal is received, judging whether the acquisition terminal is in a blacklist or not;
if the acquisition terminal is in the blacklist, judging the power failure event information reported by the acquisition terminal as invalid information;
and if the acquisition terminal is not in the blacklist, judging that the power supply area to which the acquisition terminal belongs has power failure.
A second aspect of the embodiments of the present invention provides a device for locating a power distribution network fault, including:
the power failure event monitoring unit is used for monitoring whether power failure event information reported by the acquisition terminal is received or not;
the blacklist judging unit is used for judging whether the acquisition terminal is in a blacklist or not if the power failure information reported by the acquisition terminal is received;
the invalid information judging unit is used for judging the power failure event information reported by the acquisition terminal as invalid information if the acquisition terminal is in the blacklist;
and the station area power failure determination unit is used for determining that the power supply station area to which the acquisition terminal belongs has power failure if the acquisition terminal is not in the blacklist.
A third aspect of the present embodiment provides a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the method provided in the first aspect of the present embodiment when executing the computer program.
A fourth aspect of embodiments of the present invention provides a computer-readable storage medium storing a computer program which, when executed by one or more processors, performs the steps of the method provided by the first aspect of embodiments of the present invention.
Compared with the prior art, the embodiment of the invention has the following beneficial effects: the method comprises the steps of monitoring whether power failure event information reported by an acquisition terminal is received or not, judging whether the acquisition terminal is in a blacklist or not if the power failure event information reported by the acquisition terminal is received, judging the power failure event information reported by the acquisition terminal as invalid information if the acquisition terminal is in the blacklist, and judging that a power supply station area to which the acquisition terminal belongs has power failure if the acquisition terminal is not in the blacklist; when a certain power supply station area has power failure, the fault position of the power distribution network can be timely and accurately acquired without call repair of a user, the difficulty in finding the fault of the power distribution network and the power failure time are greatly reduced, and the satisfaction degree of the user is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic flow chart of an implementation of a method for locating a fault of a power distribution network according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a power supply line of a power distribution network provided by an embodiment of the invention;
fig. 3 is an architecture diagram of a power consumption information acquisition system according to an embodiment of the present invention;
FIG. 4 is an exemplary diagram of a power distribution network fault location device provided by an embodiment of the invention;
fig. 5 is a schematic diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Fig. 1 is a schematic flow chart of an implementation of a method for locating a power distribution network fault according to an embodiment of the present invention, where as shown in the figure, the method includes the following steps:
step S101, monitoring whether power failure event information reported by an acquisition terminal is received.
In practical application, the power distribution network is generally a tree network and mainly comprises lines, circuit breakers, fuses and power supply areas. Referring to the schematic diagram of the power supply line of the power distribution network shown in fig. 2, in the power distribution network, there are usually one distribution line outlet breaker 21 and a plurality of branch power supply line breakers 22, and when the distribution line outlet breaker 21 is in an open circuit state, all branch power supply lines 25 are powered off; when the branch power supply line breaker 22 is in the open state, only the branch power supply line is deenergized. Each branch supply line comprises a plurality of power supply areas 24, each power supply area is connected with a branch supply line breaker through a fuse 23, and when the fuse 23 is disconnected, the power supply areas are powered off.
In an application scenario of the embodiment of the present invention, referring to the power consumption information acquisition system architecture diagram shown in fig. 3, each power supply station area is provided with an acquisition terminal, and the acquisition terminal can acquire a value of any electric energy meter in the corresponding power supply station area; the collection terminals of the power supply transformer areas communicate with the electricity consumption information collection system main station through the communication network, the electricity consumption information collection main station can obtain data of the electric energy meters in the power supply transformer areas through the collection terminals, can analyze the obtained data, and displays an analysis result to workers, so that the purpose of real-time monitoring is achieved.
Further, the monitoring whether the power failure event information reported by the acquisition terminal is received includes:
monitoring whether the indication voltage value is lower than a preset voltage value or not through an acquisition terminal of the power supply area;
if the indication voltage value is lower than the preset voltage value, acquiring the voltage values of the electric energy meters in the preset number in the power supply area through the acquisition terminal;
if the voltage values of all the preset number of electric energy meters in the power supply area are not obtained, receiving power failure event information reported by the acquisition terminal;
and if the voltage values of all the electric energy meters with the preset number in the power supply area are obtained, judging that the power supply area has no power failure.
In practical applications, the indication voltage value may be a voltage value of the acquisition terminal. When the electricity consumption of each user in a certain power supply area is normal, namely the data of each electric energy meter is normal, the voltage value of the acquisition terminal is a rated voltage value; when at least one user in a certain power supply area has a power failure condition, namely the corresponding electric energy meter has a power failure and cannot normally display data, the voltage value of the acquisition terminal is lower than the rated voltage value.
Illustratively, the predetermined voltage value is 60% of the rated voltage value. Monitoring whether the voltage value of the acquisition terminal is lower than 60% of the rated voltage value, and if the voltage value of the acquisition terminal is lower than 60% of the rated voltage value, indicating that the power supply station area is likely to have fault and power failure. At this time, the voltage values of any electric energy meters in the preset number of the power supply area are obtained through the acquisition terminal, and if the preset number is 3, the voltage values of any 3 electric energy meters in the power supply area are obtained through the acquisition terminal; if the voltage values of the 3 electric energy meters fail to be obtained, the acquisition terminal reports power failure event information, and the power utilization information acquisition master station receives the reported power failure event information; if the voltage values of the 3 electric energy meters are successfully obtained, the acquisition terminal does not report power failure event information, and the power utilization information acquisition master station judges that the power supply area has no power failure.
Step S102, if the power failure information reported by the acquisition terminal is received, whether the acquisition terminal is in a blacklist is judged.
Further, after receiving the power failure event information reported by the acquisition terminal, the method further includes:
counting the times that the collection terminal has reported the power failure event information within the preset time, and judging whether the times that the collection terminal has reported the power failure event information within the preset time is greater than a second preset time;
and if the times that the power failure event information has been reported by the acquisition terminal within the preset time is greater than a second preset time, listing the acquisition terminal in the blacklist.
In practical applications, the preset time may be calculated in units of days, or may be a specific time period, which is not specifically limited herein. Illustratively, starting timing at 12:00 in the morning, counting the number of times of reporting the power failure event information by the acquisition terminal within 24 hours, and judging whether the number of times of reporting the power failure event information by the acquisition terminal within 24 hours is greater than a second preset number of times, if so, the second preset number of times is 10; and if the number of times that the power failure event information has been reported by the acquisition terminal in the 24 hours is more than 10, the acquisition terminal is indicated to report the power failure event information by mistake, and the acquisition terminal is listed in the blacklist.
And step S103, if the acquisition terminal is in the blacklist, judging the power failure event information reported by the acquisition terminal as invalid information.
And step S104, if the acquisition terminal is not in the blacklist, judging that the power supply area to which the acquisition terminal belongs has power failure.
Further, after it is determined that the power supply station area to which the acquisition terminal belongs has a power failure, the method further includes:
judging whether a suspected power failure coefficient of a branch power supply line to which the power supply station area belongs is smaller than a preset value;
if the suspected power failure coefficient of the branch power supply line to which the power supply station area belongs is smaller than a preset value, judging that the branch power supply line has no power failure;
and if the suspected power failure coefficient of the branch power supply line to which the power supply station area belongs is larger than or equal to a preset value, judging that the branch power supply line has power failure, and counting the number of times of the failure reporting and power failure event accumulation of each acquisition terminal which does not report power failure event information under the branch power supply line.
Wherein the suspected power failure coefficient of the branch power supply line is as follows:
wherein S is a suspected power failure coefficient of a branch power supply line, and N isbThe number of acquisition terminals for reporting power failure event information under the branch power supply line simultaneously, wherein N istAnd collecting the total number of the terminals under the branch power supply line.
Illustratively, the preset value is 0.5. After the power failure of the power supply area to which the acquisition terminal belongs is judged, the suspected power failure coefficient of the branch power supply line to which the power supply area belongs is judged
Whether less than 0.5; if the suspected power failure coefficient of the branch power supply line to which the power supply station area belongs
If it is less than 0.5, the branch power supply line is judgedThe road is not powered off; if the suspected power failure coefficient of the branch power supply line to which the power supply station area belongs
And if the number of times of the failure events is larger than or equal to 0.5, judging that the branch power supply line has a failure, and counting the number of times of the failure events which are not reported by each acquisition terminal of the failure event information under the branch power supply line.
Further, after counting the number of times of the failure reporting and power failure event accumulation of each acquisition terminal which does not report the power failure event information under the branch power supply line, the method further comprises the following steps:
judging whether the accumulated times of the failure events of all the acquisition terminals under the branch power supply line are greater than a first preset time or not;
and if the accumulated times of the failure events of any acquisition terminal under the branch power supply line are greater than a first preset time, listing the acquisition terminal in the blacklist.
In practical application, when a certain branch power supply line is judged to have power failure, normally, each acquisition terminal under the branch power supply line should report power failure event information, if a certain acquisition terminal under the branch power supply line does not report the power failure event information, the failure of the acquisition terminal is shown to cause the failure of the acquisition terminal, and the failure event accumulation frequency of the acquisition terminal is added with 1; and when the accumulated times of the failure events of the collection terminal is greater than the preset times, if the preset times is 3, namely when the accumulated times of the failure events of the collection terminal is greater than 3, listing the collection terminal in the blacklist.
In practical application, the power failure event information reported by the acquisition terminals in the blacklist is regarded as invalid information, and the invalid information is manually removed from the blacklist until the acquisition terminals in the blacklist are maintained by a worker. In addition, when the power distribution network is scheduled to be overhauled, the line in the overhauling range can still be judged to be in fault power failure through the technical scheme of the invention, and for the condition, the monitoring personnel of the power utilization information acquisition master station can regard the line as invalid information.
The method comprises the steps of monitoring whether power failure event information reported by an acquisition terminal is received or not, judging whether the acquisition terminal is in a blacklist or not if the power failure event information reported by the acquisition terminal is received, judging the power failure event information reported by the acquisition terminal as invalid information if the acquisition terminal is in the blacklist, and judging that a power supply station area to which the acquisition terminal belongs has power failure if the acquisition terminal is not in the blacklist; when a certain power supply area has power failure, the fault position of the power distribution network can be timely and accurately acquired without call repair of a user, the difficulty in finding the fault of the power distribution network and the power failure time are greatly reduced, and the satisfaction degree of the user is improved.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Fig. 4 is a schematic diagram of a power distribution network fault location device provided in an embodiment of the present invention, where the device 4 includes:
and the power failure event monitoring unit 41 is configured to monitor whether power failure event information reported by the acquisition terminal is received.
And the blacklist judgment unit 42 is configured to judge whether the acquisition terminal is in a blacklist if the outage information reported by the acquisition terminal is received.
And an invalid information determining unit 43, configured to determine, if the acquisition terminal is in the blacklist, that the power failure event information reported by the acquisition terminal is invalid information.
And the station area power failure determination unit 44 is configured to determine that the power supply station area to which the acquisition terminal belongs has a power failure if the acquisition terminal is not in the blacklist.
Further, the power outage event monitoring unit 41 includes:
the voltage value monitoring module is used for monitoring whether the indication voltage value is lower than a preset voltage value through an acquisition terminal of the power supply area;
the voltage value acquisition module is used for acquiring the voltage values of the electric energy meters in the preset number in the power supply area through the acquisition terminal if the indication voltage value is monitored to be lower than the preset voltage value;
the power failure event receiving module is used for receiving the power failure event information reported by the acquisition terminal if the voltage values of all the preset number of electric energy meters in the power supply area are not obtained;
and the power supply area non-power-off judging module is used for judging that the power supply area has no power-off if the voltage values of all the preset number of the electric energy meters in the power supply area are obtained.
Further, the apparatus 4 further includes:
and the suspected power failure coefficient judging unit is used for judging whether the suspected power failure coefficient of the branch power supply line to which the power supply station area belongs is smaller than a preset value or not after judging that the power supply station area to which the acquisition terminal belongs has power failure.
And the branch line non-power-failure determination unit is used for determining that the branch power supply line has no power failure if the suspected power failure coefficient of the branch power supply line to which the power supply station area belongs is smaller than a preset value.
And the report rejecting frequency counting unit is used for judging that the branch power supply line has power failure if the suspected power failure coefficient of the branch power supply line to which the power supply station area belongs is greater than or equal to a preset value, and counting the number of times of the report rejecting power failure events of each acquisition terminal which does not report the power failure event information under the branch power supply line.
Wherein the suspected power failure coefficient of the branch power supply line is as follows:
wherein S is a suspected power failure coefficient of a branch power supply line, and N isbThe number of acquisition terminals for reporting power failure event information under the branch power supply line simultaneously, wherein N istAnd collecting the total number of the terminals under the branch power supply line.
Further, the apparatus 4 further includes:
and the report rejecting frequency judging unit is used for judging whether the report rejecting power failure event accumulation frequency of each acquisition terminal under the branch power supply line is greater than a first preset frequency or not after counting the report rejecting power failure event accumulation frequency of each acquisition terminal under the branch power supply line, which does not report power failure event information.
And the first blacklist adding unit is used for listing the acquisition terminal into the blacklist if the accumulated times of the failure events of any acquisition terminal under the branch power supply line are greater than a first preset time.
Further, the apparatus 4 further includes:
and the reported power failure frequency counting unit is used for counting the frequency of the power failure event information reported by the acquisition terminal within the preset time after the power failure event information reported by the acquisition terminal is received, and judging whether the frequency of the power failure event information reported by the acquisition terminal within the preset time is greater than a second preset frequency or not.
And the second blacklist adding unit is used for listing the acquisition terminal into the blacklist if the number of times that the acquisition terminal has reported the power failure event information in the preset time is greater than a second preset number of times.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
Fig. 5 is a schematic diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 5, the terminal device 5 of this embodiment includes: a processor 50, a memory 51 and a computer program 52 stored in said memory 51 and executable on said processor 50. The processor 50, when executing the computer program 52, implements the steps in the above-mentioned embodiments of the positioning method, such as the steps S101 to S104 shown in fig. 1. Alternatively, the processor 50, when executing the computer program 52, implements the functions of the modules/units in the above-mentioned device embodiments, such as the functions of the units 41 to 44 shown in fig. 4.
Illustratively, the computer program 52 may be partitioned into one or more modules/units that are stored in the memory 51 and executed by the processor 50 to implement the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution process of the computer program 52 in the terminal device 5. For example, the computer program 52 may be divided into a power outage event monitoring unit, a blacklist determination unit, an invalid information determination unit, and a station area power outage determination unit, and the specific functions of each unit are as follows:
and the power failure event monitoring unit is used for monitoring whether the power failure event information reported by the acquisition terminal is received.
And the blacklist judgment unit is used for judging whether the acquisition terminal is in the blacklist or not if the power failure information reported by the acquisition terminal is received.
And the invalid information judging unit is used for judging the power failure event information reported by the acquisition terminal as invalid information if the acquisition terminal is in the blacklist.
And the station area power failure determination unit is used for determining that the power supply station area to which the acquisition terminal belongs has power failure if the acquisition terminal is not in the blacklist.
Further, the power outage event monitoring unit includes:
the voltage value monitoring module is used for monitoring whether the indication voltage value is lower than a preset voltage value through an acquisition terminal of the power supply area;
the voltage value acquisition module is used for acquiring the voltage values of the electric energy meters in the preset number in the power supply area through the acquisition terminal if the indication voltage value is monitored to be lower than the preset voltage value;
the power failure event receiving module is used for receiving the power failure event information reported by the acquisition terminal if the voltage values of all the preset number of electric energy meters in the power supply area are not obtained;
and the power supply area non-power-off judging module is used for judging that the power supply area has no power-off if the voltage values of all the preset number of the electric energy meters in the power supply area are obtained.
Further, the apparatus further comprises:
and the suspected power failure coefficient judging unit is used for judging whether the suspected power failure coefficient of the branch power supply line to which the power supply station area belongs is smaller than a preset value or not after judging that the power supply station area to which the acquisition terminal belongs has power failure.
And the branch line non-power-failure determination unit is used for determining that the branch power supply line has no power failure if the suspected power failure coefficient of the branch power supply line to which the power supply station area belongs is smaller than a preset value.
And the report rejecting frequency counting unit is used for judging that the branch power supply line has power failure if the suspected power failure coefficient of the branch power supply line to which the power supply station area belongs is greater than or equal to a preset value, and counting the number of times of the report rejecting power failure events of each acquisition terminal which does not report the power failure event information under the branch power supply line.
Wherein the suspected power failure coefficient of the branch power supply line is as follows:
wherein S is a suspected power failure coefficient of a branch power supply line, and N isbThe number of acquisition terminals for reporting power failure event information under the branch power supply line simultaneously, wherein N istAnd collecting the total number of the terminals under the branch power supply line.
Further, the apparatus further comprises:
and the report rejecting frequency judging unit is used for judging whether the report rejecting power failure event accumulation frequency of each acquisition terminal under the branch power supply line is greater than a first preset frequency or not after counting the report rejecting power failure event accumulation frequency of each acquisition terminal under the branch power supply line, which does not report power failure event information.
And the first blacklist adding unit is used for listing the acquisition terminal into the blacklist if the accumulated times of the failure events of any acquisition terminal under the branch power supply line are greater than a first preset time.
Further, the apparatus further comprises:
and the reported power failure frequency counting unit is used for counting the frequency of the power failure event information reported by the acquisition terminal within the preset time after the power failure event information reported by the acquisition terminal is received, and judging whether the frequency of the power failure event information reported by the acquisition terminal within the preset time is greater than a second preset frequency or not.
And the second blacklist adding unit is used for listing the acquisition terminal into the blacklist if the number of times that the acquisition terminal has reported the power failure event information in the preset time is greater than a second preset number of times.
The terminal device 5 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The terminal device may include, but is not limited to, a processor 50, a memory 51. Those skilled in the art will appreciate that fig. 5 is merely an example of a terminal device 5 and does not constitute a limitation of terminal device 5 and may include more or fewer components than shown, or some components may be combined, or different components, e.g., the terminal device may also include input-output devices, network access devices, buses, etc.
The Processor 50 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 51 may be an internal storage unit of the terminal device 5, such as a hard disk or a memory of the terminal device 5. The memory 51 may also be an external storage device of the terminal device 5, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the terminal device 5. Further, the memory 51 may also include both an internal storage unit and an external storage device of the terminal device 5. The memory 51 is used for storing the computer program and other programs and data required by the terminal device. The memory 51 may also be used to temporarily store data that has been output or is to be output.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. . Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (8)
1. A method for positioning a fault of a power distribution network is characterized by comprising the following steps:
monitoring whether power failure event information reported by an acquisition terminal is received;
if the power failure event information reported by the acquisition terminal is received, judging whether the acquisition terminal is in a blacklist or not;
if the acquisition terminal is in the blacklist, judging the power failure event information reported by the acquisition terminal as invalid information;
if the acquisition terminal is not in the blacklist, judging that a power supply area to which the acquisition terminal belongs has power failure;
judging whether a suspected power failure coefficient of a branch power supply line to which the power supply station area belongs is smaller than a preset value;
if the suspected power failure coefficient of the branch power supply line to which the power supply station area belongs is smaller than a preset value, judging that the branch power supply line has no power failure;
if the suspected power failure coefficient of the branch power supply line to which the power supply station area belongs is larger than or equal to a preset value, judging that the branch power supply line has power failure, and counting the number of times of failure reporting and power failure event accumulation of each acquisition terminal which does not report power failure event information under the branch power supply line;
the suspected power failure coefficient of the branch power supply line is as follows:
wherein S is a suspected power failure coefficient of the branch power supply line, and N isbThe number of acquisition terminals for reporting power failure event information under the branch power supply line simultaneously, NtAnd collecting the total number of the terminals under the branch power supply line.
2. The method according to claim 1, wherein the monitoring whether the outage event information reported by the collection terminal is received includes:
monitoring whether the indication voltage value is lower than a preset voltage value or not through an acquisition terminal of the power supply area;
if the indication voltage value is lower than the preset voltage value, acquiring the voltage values of the electric energy meters in the preset number in the power supply area through the acquisition terminal;
if the voltage values of all the preset number of electric energy meters in the power supply area are not obtained, receiving power failure event information reported by the acquisition terminal;
and if the voltage values of all the electric energy meters with the preset number in the power supply area are obtained, judging that the power supply area has no power failure.
3. The method according to claim 1, wherein after counting the number of times of the failure reporting and outage event accumulation of each collection terminal that does not report outage event information under the branch power supply line, the method further comprises:
judging whether the accumulated times of the failure events of all the acquisition terminals under the branch power supply line are greater than a first preset time or not;
and if the accumulated times of the failure events of any acquisition terminal under the branch power supply line are greater than a first preset time, listing the acquisition terminal in the blacklist.
4. The method for locating the power distribution network fault according to claim 1, wherein after receiving the power failure event information reported by the collection terminal, the method further comprises:
counting the times that the collection terminal has reported the power failure event information within the preset time, and judging whether the times that the collection terminal has reported the power failure event information within the preset time is greater than a second preset time;
and if the times that the power failure event information has been reported by the acquisition terminal within the preset time is greater than a second preset time, listing the acquisition terminal in the blacklist.
5. A distribution network fault location device, comprising:
the power failure event monitoring unit is used for monitoring whether power failure event information reported by the acquisition terminal is received or not;
the system comprises a blacklist judgment unit, a blacklist judgment unit and a power failure event judgment unit, wherein the blacklist judgment unit is used for judging whether an acquisition terminal is in a blacklist or not if power failure event information reported by the acquisition terminal is received;
the invalid information judging unit is used for judging the power failure event information reported by the acquisition terminal as invalid information if the acquisition terminal is in the blacklist;
the station area power failure determination unit is used for determining that the power supply station area to which the acquisition terminal belongs has power failure if the acquisition terminal is not in the blacklist;
the suspected power failure coefficient judging unit is used for judging whether the suspected power failure coefficient of the branch power supply line to which the power supply station area belongs is smaller than a preset value or not after judging that the power supply station area to which the acquisition terminal belongs has power failure;
the branch line non-power-failure judging unit is used for judging that the branch power supply line has no power failure if the suspected power failure coefficient of the branch power supply line to which the power supply station area belongs is smaller than a preset value;
the report rejecting frequency counting unit is used for judging that the branch power supply line has power failure if the suspected power failure coefficient of the branch power supply line to which the power supply station area belongs is larger than or equal to a preset value, and counting the number of times of the report rejecting power failure events of each acquisition terminal which does not report the power failure event information under the branch power supply line;
the suspected power failure coefficient of the branch power supply line is as follows:
wherein S is a suspected power failure coefficient of the branch power supply line, and N isbThe number of acquisition terminals for reporting power failure event information under the branch power supply line simultaneously, NtAnd collecting the total number of the terminals under the branch power supply line.
6. The power distribution network fault location device of claim 5, wherein the power outage event monitoring unit comprises:
the voltage value monitoring module is used for monitoring whether the indication voltage value is lower than a preset voltage value through an acquisition terminal of the power supply area;
the voltage value acquisition module is used for acquiring the voltage values of the electric energy meters in the preset number in the power supply area through the acquisition terminal if the indication voltage value is monitored to be lower than the preset voltage value;
the power failure event receiving module is used for receiving the power failure event information reported by the acquisition terminal if the voltage values of all the preset number of electric energy meters in the power supply area are not obtained;
and the power supply area non-power-off judging module is used for judging that the power supply area has no power-off if the voltage values of all the preset number of the electric energy meters in the power supply area are obtained.
7. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any of claims 1 to 4 when executing the computer program.
8. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 4.
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| CN110058126A (en) * | 2019-05-29 | 2019-07-26 | 国网北京市电力公司 | Distribution network failure judgment method and device |
| CN110244163B (en) * | 2019-06-20 | 2022-03-11 | 国网湖南省电力有限公司 | Intelligent stage-level studying and judging method and device for power failure and recovery events of transformer area |
| CN110412421B (en) * | 2019-07-31 | 2021-07-13 | 深圳供电局有限公司 | Method and system for intelligently analyzing and positioning faults |
| CN110690761A (en) * | 2019-10-22 | 2020-01-14 | 宁波三星医疗电气股份有限公司 | Power-off event determining method, power terminal and power system |
| CN111638422A (en) * | 2020-06-11 | 2020-09-08 | 国家电网有限公司 | Rapid positioning method based on electric power big data power distribution network fault |
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Address after: 050011 no.238, TIYU South Street, Shijiazhuang City, Hebei Province Patentee after: ELECTRIC POWER RESEARCH INSTITUTE, STATE GRID HEBEI ELECTRIC POWER SUPPLY Co.,Ltd. Patentee after: STATE GRID CORPORATION OF CHINA Patentee after: STATE GRID HEBEI ENERGY TECHNOLOGY SERVICE Co.,Ltd. Address before: 050011 no.238, TIYU South Street, Shijiazhuang City, Hebei Province Patentee before: ELECTRIC POWER RESEARCH INSTITUTE, STATE GRID HEBEI ELECTRIC POWER SUPPLY Co.,Ltd. Patentee before: State Grid Corporation of China Patentee before: STATE GRID HEBEI ENERGY TECHNOLOGY SERVICE Co.,Ltd. |
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Effective date of registration: 20210927 Address after: 050021 No. 238 South Sports street, Hebei, Shijiazhuang Patentee after: STATE GRID HEBEI ELECTRIC POWER Research Institute Patentee after: Marketing service center of State Grid Hebei Electric Power Co.,Ltd. Patentee after: STATE GRID CORPORATION OF CHINA Patentee after: STATE GRID HEBEI ENERGY TECHNOLOGY SERVICE Co.,Ltd. Address before: 050011 no.238, TIYU South Street, Shijiazhuang City, Hebei Province Patentee before: ELECTRIC POWER RESEARCH INSTITUTE, STATE GRID HEBEI ELECTRIC POWER SUPPLY Co.,Ltd. Patentee before: STATE GRID CORPORATION OF CHINA Patentee before: STATE GRID HEBEI ENERGY TECHNOLOGY SERVICE Co.,Ltd. |