CN113219305A - Power distribution network fault automatic early warning method and system based on event-driven - Google Patents
Power distribution network fault automatic early warning method and system based on event-driven Download PDFInfo
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Abstract
The utility model provides a power distribution network fault automatic early warning method and system based on event-driven, the method comprises: firstly, by monitoring accident opening and closing, protection action and reclosing action signals of an outgoing line switch of a transformer substation, full-line fault study and judgment are realized, and by combining the conditions of full-automatic FA action and local FA action of a distribution network, accurate positioning analysis of sectional faults is realized according to FA execution process data; secondly, an automatic voice dialing technology and a short message communication technology are fully utilized to construct efficient communication channels of a power supply service command center, a field emergency maintenance team and a professional department, and automatic early warning notification of faults is realized; finally, a plurality of information reporting and sending channels such as a marketing system and a distribution network accident log are opened, automatic fault power failure information reporting is achieved, efficient coordination of distribution and debugging is supported, and quick response capability in a fault state is improved.
Description
Technical Field
The invention relates to the field of operation management of a power distribution network, in particular to a power distribution network fault automatic early warning method and system based on event driving.
Background
At present, the secondary monitoring technology of the power distribution network is gradually mature, a large amount of monitoring equipment is additionally arranged on the power distribution network in a power supply enterprise, reporting of abnormal alarms such as protection actions and equipment power failure is achieved, and fault early warning is carried out through a manual monitoring and studying and judging mode. With the increasingly complex structure of the power distribution network and the gradual increase of the number of devices, when the power distribution network breaks down, the field device reports a large amount of alarm data, and the problems of signal leakage, inaccurate study and judgment, long time consumption and the like are easily caused by adopting the modes of manual monitoring, gathering and study and judgment.
Disclosure of Invention
In view of the above, the present disclosure provides an event-driven automatic power distribution network fault early warning method, which solves the problems that in the prior art, automatic early warning cannot be performed on a fault, and early warning is not timely.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
the first aspect of the embodiment of the invention provides an automatic power distribution network fault early warning method based on event-driven, which comprises the steps of judging the fault range of a power distribution network, wherein the fault range comprises the full-line fault and/or the sectional line fault of the power distribution network; determining a fault power failure range according to the fault range of the power distribution network and based on the single line diagram; sending power distribution network fault early warning information according to the power failure range; and actively reporting the fault power failure information according to the fault early warning information.
In one embodiment, the determining the full line fault of the power distribution network comprises: according to monitored signals of the substation outgoing line switch accident opening and closing, protection action and reclosing action, all-line fault research and judgment is carried out; the step of judging the subsection fault of the power distribution network comprises the following steps: and carrying out sectional fault research and judgment according to the full-automatic FA action and the local FA action.
In one embodiment, the research and judgment of the all-line fault according to the monitored accident opening and closing, protection action and reclosing action signals of the outgoing line switch of the transformer substation comprises the following steps: judging whether the power distribution network has a fault according to the reclosure reclosing state, and specifically determining the reclosing state through the following formula:
Y＝(Abh&&Bkgfz&&Cchz&&Bkghz)&&Dmaxkg
wherein Y is a superposed state in which A isbhTo protect the action signal, CchzFor reclosing action signals, Bkgfz、BkghzRespectively showing the state of the switch, including open and closed states, DmaxkgIndicating the last state signal of the switch,&&is a logical and relationship.
In one embodiment, the sectional fault analysis performed by the local FA action specifically includes:
judging the reclosing state of the switch according to an opening signal, a reclosing signal or a closing signal after the interphase fault action; according to the switch coincidence state, carrying out sectional fault research and judgment; the coincidence state of the switch includes a primary coincidence state and a secondary coincidence state.
In one embodiment, the conducting the sectional fault study according to the switch coincidence state comprises: judging whether the primary coincidence is successful, if the primary coincidence is successful, stopping the in-situ FA research and judgment searching process, and not generating a sectional fault event; if the primary coincidence is unsuccessful, judging if the secondary coincidence is successful.
In one embodiment, the primary coincidence state calculation formula is:
Y1＝(Axj&&Bkgfz&&Cchz1&&Bkghz)&&Dmaxkg
wherein, Y1Indicating a ground-type primary coincidence state in which AxjIndicating a phase-to-phase fault action signal, Cchz1Indicating a reclosing action signal, Bkgfz、BkghzRepresents a switch state signal; dmaxkgIndicating the last actuation signal of the switch.
In one embodiment, the quadratic coincidence state calculation formula is:
Y2＝(Axj&&Bkgfz&&Cchz1&&Bkghz&&Cchz2)&&Dmaxkg
wherein, Y2In situ type of secondary coincidence state, Cchz2A signal representing the secondary reclosing action is sent,&&for logical AND relationship, when Y2If the result of (1) is true, the second coincidence is judged to be successful, and the switch is indicated to be operated normally. Otherwise, judging that the secondary reclosing fails, and indicating that the switch is opened and a power failure event occurs at the downstream of the switch.
In one embodiment, the fault blackout range is determined according to the fault range of the power distribution network and based on a single line diagram: and dispatching operation personnel check the fault studying and judging process and result through the fault power failure event monitoring and confirming window, and confirm and adjust the fault range through a single line diagram visual display and click operation mode.
The second aspect of the embodiment of the invention provides an automatic power distribution network fault early warning system based on event-driven, which comprises a fault judgment module, a fault detection module and a fault early warning module, wherein the fault judgment module is configured to judge the fault range of a power distribution network, and the fault comprises a power distribution network full-line fault and/or a section line fault; the power failure range determining module is configured to determine a power failure range of a fault according to the fault range of the power distribution network and based on the single line diagram; the early warning module is configured to send power distribution network fault early warning information according to the power failure range; and the sending module is configured to actively report the fault power failure information according to the fault early warning information.
In one embodiment, the fault monitoring module is configured to monitor signals of an accident opening and closing operation, a protection operation and a reclosing operation of the outgoing line switch of the transformer substation, conduct full-line fault research and judgment, conduct sectional fault research and judgment by combining full-automatic FA (feeder automation) operation and local FA operation of a distribution network, and achieve accurate positioning analysis of sectional faults.
In a third aspect of the embodiments of the present invention, there is provided an electronic device, including: memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method according to the first aspect of an embodiment of the invention when executing the program.
In a fourth aspect of the embodiments of the present invention, there is provided a computer-readable storage medium having stored thereon executable instructions, which when executed by a processor, cause the processor to perform the method according to the first aspect of the embodiments of the present invention.
According to the power distribution network fault automatic early warning method and system based on event-based driving, firstly, full-line fault research and judgment are achieved by monitoring signals of accident opening and closing, protection actions and reclosing actions of an outgoing switch of a transformer substation, and accurate positioning analysis of sectional faults is achieved according to FA execution process data by combining conditions of full-automatic FA actions and local FA actions of a distribution network; secondly, an automatic voice dialing technology and a short message communication technology are fully utilized to construct efficient communication channels of a power supply service command center, a field emergency maintenance team and a professional department, and automatic early warning notification of faults is realized; finally, a plurality of information reporting and sending channels such as a marketing system and a distribution network accident log are opened, automatic fault power failure information reporting is achieved, efficient coordination of distribution and debugging is supported, and quick response capability in a fault state is improved.
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In order to more clearly illustrate the technical solutions involved in the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic flowchart of an automated power distribution network fault early warning method based on event-driven according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a method for full-line fault study and judgment and a method for sectional fault study and judgment according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an automatic power distribution network fault early warning system based on event-driven according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a full-line fault studying and judging module and a sectional fault studying and judging module according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the embodiments of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It is to be understood that the described embodiments of the invention are only some, and not all, embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular internal procedures, 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.
As used herein, the terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
As used in this disclosure, the terms "device," "module," and the like are intended to refer to a computer-related entity, either hardware, software in execution, firmware, middleware, microcode, or any combination thereof. For example, a module may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, or a computer. One or more components may be stored within a process or thread of execution and a module may be localized on one computer and distributed between two or more computers. In addition, these modules can execute from various computer readable media having various data structures stored thereon. Additionally, the modules of the system described in this disclosure may be rearranged or complimented by additional components in order to facilitate achieving the various goals, advantages, etc., described with regard thereto, and are not limited to the precise configurations set forth in a given figure, as will be appreciated by one skilled in the art.
The embodiment of the disclosure provides an automatic early warning method and system for power distribution network faults based on event-driven, wherein the method comprises the following steps: firstly, by monitoring accident opening and closing, protection action and reclosing action signals of an outgoing line switch of a transformer substation, full-line fault study and judgment are realized, and by combining the conditions of full-automatic FA action and local FA action of a distribution network, accurate positioning analysis of sectional faults is realized according to FA execution process data; secondly, an automatic voice dialing technology and a short message communication technology are fully utilized to construct efficient communication channels of a power supply service command center, a field emergency maintenance team and a professional department, and automatic early warning notification of faults is realized; finally, a plurality of information reporting and sending channels such as a marketing system and a distribution network accident log are opened, automatic fault power failure information reporting is achieved, efficient coordination of distribution and debugging is supported, and quick response capability in a fault state is improved. Embodiments of the present invention and their advantages are described in detail below with reference to the accompanying drawings. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. It may be evident, however, that the various aspects may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing these aspects.
As shown in fig. 1, a schematic flow chart of an automatic power distribution network fault early warning method based on event-driven according to an embodiment of the present invention includes:
and S101, judging the fault range of the power distribution network.
Optionally, judging whether the fault range of the power distribution network includes a full line fault and/or a sectional line fault of the power distribution network;
the method for full-line fault study and sectional fault study will be described based on fig. 2.
Optionally, the analyzing the event for the power distribution network full-line fault research and judgment includes:
1) and monitoring the brake opening signal of the outgoing line switch in the transformer substation in real time, removing repeated signals according to the trip switch and the trip time, and removing normal maintenance signals through the switch retrieval tag hanging operation record.
2) And waiting for detecting whether to trigger the protection action of the outgoing line switch or the accident total signal of the transformer substation in the studying and judging process.
3) And if the switch protection action or the substation accident total signal is not effectively triggered, stopping the fault research and judgment searching process.
4) And collecting a reclosing action signal, a switch closing signal or a reclosing signal after reclosing after triggering protection action.
5) And calculating whether the reclosing is successful according to the collected signals of the protection action, the switch on/off, the reclosing and the like. The calculation method is as the formula (1):
Y＝(Abh&&Bkgfz&&Cchz&&Bkghz)&&Dmaxkg (1)
wherein Y is a superposed state in which A isbhTo protect the action signal, CchzFor reclosing action signals, Bkgfz、BkghzRespectively showing the state of the switch, including open and closed states, DmaxkgIndicating the last state signal of the switch,&&is a logical and relationship. If a protection action signal and a reclosing signal are received, Abh、CchzSetting the value to true, otherwise setting the value to false; if receiving switch opening signal and switch closing signal, Bkgfz、BkghzSetting the value to true, otherwise setting the value to false; if the last state signal of the switch is switched on, DmaxkgSetting the value to true, otherwise setting the value to false; the value of Y is calculated according to the above formula. And when Y is true, judging that the switch is reclosed successfully, and indicating that the outlet operation state of the switch is normal. Otherwise, indicating that the reclosing is failed or abnormal, and judging that the power failure event occurs on the outgoing line of the switch.
6) And recording the reclosing action condition of the tripping event to form a complete full-line fault event record.
Optionally, the sectional fault study and judgment is performed through a full-automatic FA and/or an in-place FA.
Optionally, the fully-automatic FA studying and judging event analysis specifically includes:
1) monitoring whether a full-automatic FA is started or not on the basis of the research and judgment of the switch trip event in the station;
2) if not, stopping the full-automatic FA judging and searching process;
3) if the system is normally started, the whole process tracks the FA processing fault analysis, fault positioning and fault isolation execution process;
4) after the FA fault isolation is successful, generating a fault description E file;
5) and analyzing the fault description E file, recording the FA studying and judging fault range, and generating a sectional line fault event record.
Optionally, the analysis of the local FA adjudication event specifically includes:
1) monitoring an opening signal (interphase fault) of an external switch of the distribution automation station in real time;
2) judging whether a line selection switch is available or not according to the type of the opening switch, and stopping the in-place FA judging and searching process if the line selection switch is unavailable;
3) collecting an opening signal, a reclosing signal or a closing signal after the inter-phase fault action, and judging the reclosing state of the switch, wherein the calculation method of the primary reclosing state is as shown in a formula (2):
Y1＝(Axj&&Bkgfz&&Cchz1&&Bkghz)&&Dmaxkg (2)
wherein, Y1Indicating a ground-type primary coincidence state in which AxjIndicating a phase-to-phase fault action signal, Cchz1Indicating a reclosing action signal, Bkgfz、BkghzRepresents a switch state signal; dmaxkgIndicating the last actuation signal of the switch. If a corresponding signal is received, Axj、Cchz1、Bkgfz、BkghzIs true, otherwise is false,&&is a logical and relationship. DmaxkgAnd whether the last action signal is in a switch-on state or not is shown, if so, true is shown, and otherwise, false is shown. When Y is1When the result is true, the switch can be judged to be successfully superposed once, and the circuit where the switch is located is indicated to be operated normally. If the primary coincidence fails, the judgment of the secondary coincidence condition needs to be continued.
The method of the secondary coincidence success state is formula (3):
Y2＝(Axj&&Bkgfz&&Cchz1&&Bkghz&&Cchz2)&&Dmaxkg (3)
wherein, Y2In situ type secondary coincidence state, Cchz2Indicating a secondary reclosing action signal. When Y is2If the result of (1) is true, the second coincidence is judged to be successful, and the fact indicates that the line where the switch is located operates normally. Otherwise, judging that the secondary reclosing fails, and indicating that the switch is opened and a power failure event occurs at the downstream of the switch.
4) Judging whether the primary coincidence is successful, if the primary coincidence is successful, stopping the in-situ FA research and judgment searching process, and not generating a sectional fault event; if the first coincidence step is successful, judging whether the second coincidence is successful;
5) and if the secondary coincidence is successful, acquiring a blocking signal by analyzing the fault description E file, and judging the fault range.
6) And if the secondary coincidence is not formed, judging that the fault exists between the line selection switch and the first section selection switch.
7) And recording the fault range of the local FA to generate a fault event record of the sectional line.
And S102, determining a fault power failure range according to the fault range of the power distribution network and based on the single line diagram.
Optionally, a management, distribution and dispatching through construction achievement is utilized, a visualization display and operation technology based on a single line diagram is developed, a fault power failure event monitoring confirmation window is provided, dispatching operation personnel check fault research and judgment processes and results, and faults are quickly confirmed and fault ranges are quickly adjusted through the direct display and point selection operation mode of the single line diagram.
S103, sending power distribution network fault early warning information according to the power failure range;
optionally, after power failure due to power distribution network fault is confirmed, the dispatching desk sends fault early warning information to all responsible personnel at the first time by relying on the system integration channel, the short message channel and the telephone channel, so that field personnel can quickly and accurately master fault details, quick and automatic notification for professional relevant personnel such as transformer substations, distribution transformers and marketing is realized, the problem that manual notification is not timely in the past fault state is solved, and the fault handling progress is accelerated; the automatic generation of the accident log facing the dispatching desk is realized, and the input workload of the dispatching desk is reduced; meanwhile, the system can be quickly reported to a customer service center so as to facilitate the customer repair interception and reduce the repeated dispatch of repair work orders.
And S104, actively reporting the fault power failure information according to the fault early warning information.
Optionally, for manual processing links such as processing of longer-time-consuming inquiry accident signals, comprehensive study and judgment of fault power failure events, analysis of power failure range, accident log reporting and reporting of allocation and rescue fault power failure information in the process of reporting fault power failure events, active reporting of structured power failure information is achieved through information flow transmission channels which run through the OMS, the PMS and a marketing service application system, power failure information reporting efficiency is greatly improved, and fault handling progress is accelerated.
The system of the power distribution network fault automatic early warning method based on event-driven provided by the embodiment of the invention is introduced based on the relevant description in the embodiment of the power distribution network fault automatic early warning method based on event-driven corresponding to fig. 1. Technical terms, concepts and the like related to the above embodiments in the following embodiments may refer to the above embodiments, and are not described in detail herein.
As shown in fig. 3, a schematic structural diagram of an automated early warning system for power distribution network fault based on event-driven according to an embodiment of the present invention is provided, where the apparatus 200 includes:
the fault determination module 201 is configured to determine a fault range of the power distribution network, where the fault includes a power distribution network full line fault and/or a segment line fault for research and determination.
The fault monitoring module 202 is configured to monitor signals of an accident opening and closing, a protection action and a reclosing action of an outgoing line switch of the transformer substation, conduct full-line fault research and judgment, conduct sectional fault research and judgment according to FA execution process data by combining conditions of full-automatic FA actions and local FA actions of a distribution network, and achieve accurate positioning analysis of sectional faults.
And the power outage range determining module 203 is configured to determine the fault power outage range according to the fault range of the power distribution network and based on the single line diagram.
And the early warning module 204 is configured to send power distribution network fault early warning information according to the power failure range.
And the sending module 205 is configured to actively report the fault power failure information according to the fault early warning information.
Fig. 4 is a structural diagram of a full-line fault studying module and a sectional fault studying module according to an embodiment of the present invention.
Optionally, the whole-line fault research and judgment is realized through a whole-line fault research and judgment module, and the whole-line fault research and judgment module comprises an in-station and out-station switch opening monitoring module, a protection action module and a switch deflection combination module.
Optionally, the sectional fault studying and judging function is implemented by a full-automatic FA studying and judging module and/or an in-place FA studying and judging module, wherein the full-automatic FA studying and judging module comprises a full-automatic FA start monitoring module, a full-automatic FA fault analyzing and isolating module and a full-automatic FA fault description E file generating module; the on-site FA research and judgment module comprises an on-site FA fault analysis module, an on-site FA fault analysis module and an on-site FA fault analysis module, wherein the on-site FA fault analysis module is used for analyzing the on-site FA fault and the on-site FA fault analysis module is used for analyzing the on-site FA fault.
As shown in fig. 5, in order to provide a schematic structural diagram of an electronic device according to an embodiment of the present invention, an electronic device 500 includes a Central Processing Unit (CPU)501, which can perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM)502 or a program loaded from a storage section 508 into a Random Access Memory (RAM) 503. In the RAM 503, various programs and data necessary for the operation of the electronic apparatus 500 are also stored. The CPU 501, ROM 502, and RAM 503 are connected to each other via a bus 504. An input/output (I/O) interface 505 is also connected to bus 507.
The following components are connected to the I/O interface 505: an input portion 506 including a keyboard, a mouse, and the like; an output portion 507 including a display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; a storage portion 508 including a hard disk and the like; and a communication section 509 including a network interface card such as a LAN card, a modem, or the like. The communication section 509 performs communication processing via a network such as the internet. The driver 510 is also connected to the I/O interface 505 as necessary. A removable medium 511 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 510 as necessary, so that a computer program read out therefrom is mounted into the storage section 508 as necessary.
Embodiments of the present invention provide a computer storage medium including computer instructions which, when executed on a computer, cause the computer to perform the method flows as described above. By way of example, computer-readable storage media can be any available media that can be accessed by a computer or a data storage device, such as a server, data center, etc., that includes one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, only the division of the functional modules is illustrated, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, 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, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An automatic power distribution network fault early warning method based on event-driven, the method comprises the following steps:
determining a fault range of the power distribution network, wherein the fault range comprises a full line fault and/or a sectional line fault of the power distribution network;
determining a fault power failure range according to the fault range of the power distribution network and based on the single line diagram;
sending power distribution network fault early warning information according to the power failure range;
and actively reporting the fault power failure information according to the fault early warning information.
2. The method of claim 1, wherein determining the power distribution network full line fault comprises: according to monitored signals of the substation outgoing line switch accident opening and closing, protection action and reclosing action, all-line fault research and judgment is carried out; the step of judging the subsection fault of the power distribution network comprises the following steps: and carrying out sectional fault study and judgment according to the full-automatic FA action and/or the local type FA action.
3. The method of claim 2, wherein the conducting full-line fault research and judgment according to the monitored substation outlet switch accident opening and closing, protection action and reclosing action signals comprises: judging whether the power distribution network has a fault according to the reclosing state;
the reclosing state is determined by a formula (1):
Y＝(Abh&&Bkgfz&&Cchz&&Bkghz)&&Dmaxkg (1)
wherein Y is a superposed state in which A isbhTo protect the action signal, CchzFor reclosing action signals, Bkgfz、BkghzRespectively showing the state of the switch, including open and closed states, DmaxkgIndicating the last state signal of the switch,&&is a logical and relationship.
4. The method as claimed in claim 2 or 3, wherein the performing segment fault study on the local FA action specifically comprises:
and judging the reclosing state of the switch according to the opening signal, the reclosing signal or the closing signal after the interphase fault action.
And carrying out sectional fault research and judgment according to the switch coincidence state.
The coincidence state of the switch includes a primary coincidence state and a secondary coincidence state.
5. The method of claim 4, wherein the performing the segment fault study according to the switch reclosing state comprises:
judging whether the primary coincidence is successful, if the primary coincidence is successful, stopping the in-situ FA research and judgment searching process, and not generating a sectional fault event; if the primary coincidence is unsuccessful, judging if the secondary coincidence is successful.
6. The method according to claim 5, wherein the primary coincidence state calculation method is formula (2):
Y1＝(Axj&&Bkgfz&&Cchz1&&Bkghz)&&Dmaxkg (2)
wherein, Y1Indicating a ground-type primary coincidence state in which AxjIndicating a phase-to-phase fault action signal, Cchz1Indicating a reclosing action signal, Bkgfz、BkghzRepresents a switch state signal; dmaxkgIndicating the last actuation signal of the switch.
The secondary coincidence state calculation method is as in formula (3):
Y2＝(Axj&&Bkgfz&&Cchz1&&Bkghz&&Cchz2)&&Dmaxkg (3)
wherein, Y2In situ type secondary coincidence state, Cchz2A signal representing the secondary reclosing action is sent,&&is a logical and relationship.
7. The method of claim 6, wherein determining the fault outage range from the fault range of the power distribution network and based on the single line diagram: and dispatching operation personnel check the fault studying and judging process and result through the fault power failure event monitoring and confirming window, and confirm and adjust the fault range through a single line diagram visual display and click operation mode.
8. An automated pre-warning system for power distribution network faults based on eventing drive, the system comprising:
the fault determination module is configured to determine a fault range of the power distribution network, wherein the fault comprises a full line fault and/or a segmented line fault of the power distribution network;
the power failure range determining module is configured to determine a power failure range of a fault according to the fault range of the power distribution network and based on the single line diagram;
the early warning module is configured to send power distribution network fault early warning information according to the power failure range;
and the sending module is configured to actively report the fault power failure information according to the fault early warning information.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method according to any of claims 1 to 7 are implemented when the computer program is executed by the processor.
10. A non-transitory computer-readable storage medium, on 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 7.
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