CN111031491A

CN111031491A - Method and system for reporting power failure in real time

Info

Publication number: CN111031491A
Application number: CN201911158980.7A
Authority: CN
Inventors: 金鑫; 肖勇; 杨劲锋; 罗鸿轩; 冯俊豪
Original assignee: CSG Electric Power Research Institute
Current assignee: CSG Electric Power Research Institute
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-04-17
Anticipated expiration: 2039-11-22
Also published as: CN111031491B

Abstract

The invention discloses a method and a system for reporting power failure in real time, wherein the system for reporting power failure in real time comprises a central node and a plurality of slave nodes; the real-time power failure reporting method comprises the following steps: unicast reporting: the power failure node reports the power failure reporting frame to the central node through the stored reporting route path; and (3) broadcasting and reporting: and at least one power failure node broadcasts and reports the power failure broadcast frame to the central node according to the time slot sequence. When the power failure is detected, the designed real-time power failure reporting mechanism combines the unicast reporting mode and the broadcast reporting mode, the unicast reporting stage can realize the rapid reporting function under the condition of less power failure number, the broadcast reporting stage can realize the regional power failure reporting function, the power failure reporting time is reduced, and the success rate and the timeliness of the power failure reporting are ensured.

Description

Method and system for reporting power failure in real time

Technical Field

The invention relates to the technical field of power failure real-time reporting, in particular to a power failure real-time reporting method and system.

Background

For a long time, a power company mainly determines the low-voltage distribution network fault according to a user repair call, the fault processing is passive, fault information such as fault location, power failure scale and the like is inaccurately obtained, and even the situation that the power failure fault continues due to the fact that the user does not find the power failure at home for a long time and the user equipment and property are greatly damaged exists, so that the problems of user complaints, claim compensation and the like are caused.

In order to enable personnel to go to the site for rush repair as soon as possible after power failure, shorten the power failure time and improve the user satisfaction degree. The power company needs to obtain the power failure information of the user in time, but the current system cannot meet the requirements. The electric energy meter is used as a reference point, the power failure condition comprises power failure before the meter and power failure after the meter, although the power failure after the meter is irrelevant to an electric power company, if a user complains about the power failure in an indoor environment, the electric power company can immediately judge whether the power failure scene is the power failure after the meter or the power failure before the meter, and the power failure scene is really informed to the user, so that unnecessary site dispatching is reduced.

The power failure before the meter needs the power company to study and judge in time and solve the power failure, the failure causes of the power failure are approximately 7, and 4 power failure scenes can be summarized: the power failure of the whole area, the power failure of a certain phase, the power failure of a certain building (unit) and the power failure of a certain single (number) of households. At present, the following problems exist in the prior art in real-time reporting of power failure:

(1) the power failure information is acquired laggard, the current power failure treatment is carried out, except that the power failure of the whole distribution area can be timely and actively reported to a distribution area power failure event by a concentrator, the power failures of other users can not be timely reported to a main station, the power failures of other users can only be inquired and counted after power restoration, the main station analyzes the power failure condition of the users according to an inquiry result, and whether worker dispatching and maintenance are needed or not is judged according to an analysis result. Or judging whether first-aid repair is needed according to the complaint and repair telephone of the user. The method does not meet the requirement of a power company on real-time reporting of the power failure event, does not help operation, maintenance and first-aid repair, seriously influences the power consumption experience of a user, and does not accord with the idea of fine management advocated by the current power grid.

(2) Unicast reporting is easy to fail, in order to solve the problem that a power failure event of a part of or a single power failure user can be reported to a master station in time, a random active reporting mode is mostly adopted for early single-point power failure event reporting of the electric meters, so that the single-point power failure event can be reported to the master station in time, when power failure nodes are more, network channel conflicts exist, although random delay can avoid the conflicts to a certain extent, the power failure event can be generally required to be reported to the master station in 1 minute, and the number of reported nodes which can be contained in 1 minute by adopting the random active reporting mode is limited.

(3) Broadcast reporting is easy to collide, except for random active reporting, a broadcast reporting mode is adopted, generally, broadcast reporting needs whole-network node participation, the reporting time is relatively long, and the reporting timeliness is not guaranteed under the condition that only a single node or a few nodes have power failure.

(4) The situation of misinformation exists, because the ammeter and the concentrator are installed on the spot, and the function of real-time reporting of power failure is not designed originally, a back-up power supply is not provided, and the ammeter is not allowed to be changed easily, so that modification of the ammeter module and the local concentrator module is generally considered, and a back-up power supply and a power failure detection circuit are added. The normal method is to detect whether a 12V power supply exists or not or whether a zero-crossing signal exists to judge whether the electric meter has power failure or not, so that the normal power failure can be judged, but the two states of the extraction module and the power failure cannot be distinguished, and the possibility of false alarm exists.

Disclosure of Invention

The technical problem to be solved by the present invention is to provide a method and a system for reporting power outage in real time, aiming at the above-mentioned defects in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: according to an aspect of the present invention, a method for reporting a power outage in real time is provided, which is applied to a system for reporting a power outage in real time, wherein the system for reporting a power outage in real time comprises a central node and a plurality of slave nodes; the plurality of slave nodes include a power-off node and a power-off-free node, and the method comprises the following steps:

unicast reporting: the power failure node reports a power failure reporting frame to the central node through the stored reporting route; the power failure node is the slave node in power failure;

and (3) broadcasting and reporting: and at least one power failure node broadcasts and reports a power failure broadcast frame to the central node according to the time slot sequence.

Preferably, the unicast reporting specifically includes the steps of:

s11, the power failure node judges whether a power failure event is detected, if so, the S12 is executed;

s12, broadcasting delay;

s13, carrying out random time delay;

s14, judging whether the air is idle, if so, executing S15; if not, executing S12;

and S15, sending the power failure report frame to the central node through the stored report routing path.

Preferably, the central node and a plurality of slave nodes form a micro-power wireless MESH network, and the central node allocates a time slot uniquely corresponding to each slave node according to the number of the slave nodes in the micro-power wireless MESH network.

Preferably, the time slots of each slave node are cyclically synchronized by a synchronization frame broadcast by the central node at preset intervals.

Preferably, the power outage broadcast frame includes bitmap information, where the bitmap information is stored with power outage information of all slave nodes in the MESH network.

Preferably, the broadcast reporting specifically includes the steps of:

s21, the slave node judges whether the self time slot arrives, if so, the S25 is executed; if not, executing S22;

s22, judging whether a power failure broadcast frame is received, if so, executing S23; if not, executing S21;

s23, authenticating the power failure broadcast frame;

s24, collecting operation and updating bitmap information of the user, and returning to S21;

and S25, constructing and updating the power failure broadcast frame and reporting the power failure broadcast frame to the central node.

Preferably, the broadcasting processing step of the slave node without power failure comprises:

s31, the slave node judges whether a power failure broadcast frame is received, if so, the slave node confirms the information and executes S32;

s32, judging whether the time slots are synchronous, if so, executing S33; if not, ending;

s33, judging whether the time slot of the slave node is over, if so, waiting for the next time slot, continuously monitoring the power failure broadcast frame of the slave node nearby, refreshing the bitmap information of the slave node, and executing S35; if not, executing S34;

s34, waiting for the time slot of the slave node, and continuously monitoring the power failure broadcast frame of the slave node nearby;

s35, judging whether the self time slot is arrived, if so, executing S36; if not, returning to S34;

and S36, constructing and updating the power failure broadcast frame and reporting the power failure broadcast frame to the central node.

The invention also provides a computer readable storage medium, which stores a computer program, and when the computer program is executed, the method for reporting the power failure in real time is realized.

The invention also provides a power failure real-time reporting device, which comprises a processor and a memory;

the memory is used for storing computer programs, and the processor is used for executing the computer programs stored in the memory, so that the processor executes the power failure real-time reporting method.

The invention also provides a system for reporting the power failure in real time, which comprises a central node and a plurality of slave nodes which are in wireless communication with the central node, wherein the plurality of slave nodes comprise power failure nodes and non-power failure nodes;

the slave node comprises a processor and a memory; the memory is used for storing computer programs, and the processor is used for executing the computer programs stored in the memory, so that the processor executes the power failure real-time reporting method.

The technical scheme of the method and the system for reporting the power failure in real time has the following advantages or beneficial effects: when the power failure is detected, the designed real-time power failure reporting mechanism combines unicast reporting and broadcast reporting, and the unicast reporting stage can realize the function of rapid reporting under the condition of less power failure number; the broadcasting reporting stage can realize the regional power failure reporting function, reduce the power failure reporting time and ensure the success rate and timeliness of the power failure reporting.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments 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 other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a general timing diagram of reporting blackout in an embodiment of a real-time blackout reporting method of the present invention;

fig. 2 is schematic diagrams of two power failure reporting stages in an embodiment of a real-time power failure reporting method of the present invention;

FIG. 3 is a schematic diagram illustrating a power outage reporting process according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a unicast reporting flow of an embodiment of a real-time reporting method for power outage of the present invention;

fig. 5 is a schematic diagram of a broadcast reporting flow of an embodiment of a real-time reporting method for power outage according to the present invention;

FIG. 6 is a schematic diagram of a TDMA working mode of an embodiment of a method for reporting power outage in real time according to the present invention;

FIG. 7 is a flow chart of a broadcast reporting implementation mechanism of an embodiment of a real-time reporting method for power outage of the present invention;

fig. 8 is a timing diagram of broadcast reporting in an embodiment of the method for reporting power outage in real time according to the present invention;

fig. 9 is a broadcast flowchart of an uninterruptible node according to an embodiment of a method for reporting power outage in real time.

Detailed Description

In order that the objects, aspects and advantages of the present invention will become more apparent, various exemplary embodiments will be described below with reference to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary embodiments in which the invention may be practiced, and in which like numerals in different drawings represent the same or similar elements, unless otherwise specified. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. It is to be understood that they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims, and that other embodiments may be used, or structural and functional modifications may be made to the embodiments set forth herein, without departing from the scope and spirit of the present disclosure. 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.

In order to explain the technical means of the present invention, the following description will be given by way of specific examples. Fig. 1 to 8 are schematic structural diagrams provided by embodiments of the present invention, and for convenience of description, only parts related to the embodiments of the present invention are shown, and the embodiments are only specific examples and do not indicate an implementation manner of the present invention.

The first embodiment is as follows:

as shown in fig. 1-2, the power failure scenario analysis of daily electricity utilization is performed, and the power failure is divided into two types from the viewpoint of the number of power failures: individual user outage and regional outage. The power failure of an individual user generally refers to the power failure of a small number of users in a station area unit. This is mostly caused by a switch failure or trip of a certain user. When a power failure real-time reporting mechanism is designed, unicast reporting is used, and after a power failure sensor of a user detects that power failure occurs, a reporting routing path stored in a communication module of a slave node is used for completing a power failure real-time reporting function. In this case, the reporting quantity is small, the probability of collision is low, the reporting success rate is high, and the reporting speed is high. The regional power outage refers to the situation that a large number of users have power outage in a station area unit. This is often caused by power failure in the entire distribution area, power failure in a branch line, and failure in a branch switch. When a power failure real-time reporting mechanism is designed, collision conflict is easily caused by multiple levels of unicast reporting, and the time is too long for one-by-one unicast reporting, so that the reporting time can be greatly shortened by using broadcast reporting, but the problem of broadcast collision needs to be solved.

Firstly, the power failure needs to be judged, and in order to solve the problem of false alarm of the power failure event of the ammeter caused by plugging and unplugging the communication module, the problem is solved by a zero-crossing monitoring circuit and a method of combining the change rate of the change slope of the power supply voltage. After the zero crossing point is monitored in a plurality of continuous power line periods, the communication module can be judged to be in a state without power supply, and then whether the communication module is caused by power failure of the electric meter or is caused by pulling the communication module out of the electric meter is judged through the change slope of the power supply voltage. Due to the characteristics of a power line and the existence of a battery in the ammeter during power failure of the ammeter, the slope of the voltage change of the power supply pin of the communication module is more gentle than that of the power supply pin of the communication module pulled out of the ammeter, and therefore accurate judgment of power failure events is achieved.

And secondly, reporting the power failure event, namely setting a broadcast delay n1 ms by the communication module after judging the power failure of the communication module through the power failure analysis, simultaneously taking a random delay n2 ms (y is less than n1) in a window (x, y), and reporting the power failure unicast after the random delay n2 is finished, wherein after the broadcast delay is finished, if the time slot of the communication module is synchronous in the network, the communication module can construct a power failure broadcast frame and sends the power failure broadcast frame in the self time slot after the construction is finished. In the whole operation process of the communication module, as long as the time slots are synchronized in the network, the power failure broadcast report is processed, the power failure information in the power failure broadcast report is logically processed, and meanwhile, the power failure broadcast frame is constructed and sent out by adding the power failure information in the self time slot.

The source node (power failure node) in the invention only needs to broadcast and send a power failure broadcast frame carrying the power failure information of the source node once, and then the power failure broadcast frame is forwarded by the slave node (no matter whether power failure exists) of the neighbor, so that the self power failure information can be diffused. Therefore, the problem that the slave node in the network always sends data channel occupation is solved, and meanwhile, the power failure reporting efficiency is improved, because the timeliness of the power failure reporting is an important point of the performance index.

When the power failure sensor detects the occurrence of power failure, the power failure sensor cannot know which of the above conditions the power failure sensor belongs to. Therefore, when a real-time reporting mechanism for power failure is designed, the single-broadcast reporting mode and the broadcast reporting mode are combined. The real-time reporting of the power failure is divided into two stages, wherein the first stage is a unicast reporting stage, and the stage can realize a quick reporting function under the condition of a small number of power failures; the second stage is a broadcast reporting stage, which can realize the function of reporting regional power failure. Any blackout node needs to pass through a unicast reporting stage and a broadcast reporting stage.

As shown in fig. 3, an embodiment of a method for reporting a power failure in real time according to the present invention is provided, where the method for reporting a power failure in real time is applied to a system for reporting a power failure in real time, where the system for reporting a power failure in real time includes a central node and a plurality of slave nodes, where the plurality of slave nodes include a power failure node and an uninterruptible node, and the power failure node and the uninterruptible node are distinguished from each other by names only for convenience of representation, and have substantially the same structure, where the power failure node is a slave node in power failure, and the uninterruptible node is a slave node in power failure; the real-time power failure reporting method specifically comprises the following steps:

s10, unicast reporting: the power failure node reports a power failure reporting frame to the central node through the stored reporting route path;

s20, broadcast reporting: and at least one power failure node broadcasts and reports a power failure broadcast frame to the central node according to the time slot sequence.

In this embodiment, the unicast reporting belongs to the first phase of the power outage reporting. The realization principle is that the power failure node constructs a power failure reporting frame by using a locally stored reporting routing path (static routing), and the reporting function is completed according to the specified reporting routing path. The reported routing path is generated by the central node and configured to each slave node (including the power-off node and the non-power-off node) when the network channel is constructed.

As shown in fig. 4, the unicast reporting specifically includes the steps of:

s12, broadcasting delay;

s13, carrying out random time delay;

Specifically, the central node and the plurality of slave nodes form a micro-power wireless MESH network, and the central node allocates a time slot uniquely corresponding to each slave node according to the number of the slave nodes in the micro-power wireless MESH network.

The aim of rapid reporting is achieved when a few electric meters are powered off. The length of the unicast reporting frame is about 130 bytes (layer 7 node), the reporting is carried out at a rate of 10Kbps, the time for transmitting a frame is 130 × 0.8 ═ 104ms, the transmission of the layer 7 network needs 104 × 7 ═ 728ms, and a node actively reports the reserved 1s time by adding the time of processor processing and random delay. The unicast reporting stage time is designed to be 5s, and the unicast reporting time length of 5 blackout nodes is reserved.

In this embodiment, if an electric meter in a certain area in a distribution area has a power failure, for example, according to a unicast reporting mechanism, a communication module of the power failure electric meter needs to report power failure information according to a network configuration route, when network levels are multiple, transmission time is long, the requirement on the capacity of a super capacitor is large, and the size of the super capacitor is large; meanwhile, transmission signals become unstable when multiple layers exist, and frame loss is easy. In addition, the unicast reporting of a plurality of slave nodes in the network cannot meet the requirement of frame loss caused by the reporting collision of the plurality of slave nodes only by depending on a collision detection mechanism. In the power failure scene, the broadcast reporting mechanism can meet the requirement of quick reporting. For a slave node, the time for completing a broadcast report is much shorter than the time for a unicast report. Because a unicast report is completed, the report of the whole path needs to be completed, and an acknowledgement frame of the central node needs to be waited. And one broadcast report is finished, at most two broadcast report frames are transmitted, the broadcast report frame and the unicast report frame data have the same length, and the difference of the transmission time length is not much.

In this embodiment, in order to ensure the success rate of the broadcast reporting mode, when designing a broadcast reporting mechanism, 2 problems are mainly solved: the problem of avoiding the broadcast frame transmission conflict and the problem of how the broadcast frame carries node power failure information are solved. And the time slot of each slave node is circularly synchronized by the synchronization frame broadcasted by the central node according to the preset interval time. The power failure broadcast frame comprises bitmap information, and the bitmap information is stored with power failure information of all slave nodes in the micro-power wireless MESH network.

As shown in fig. 5, in this embodiment, the broadcast reporting specifically includes the steps of:

s21, the slave node judges whether the time slot of the slave node arrives, if so, S25 is executed; if not, executing S22;

s22, judging whether the power failure broadcast frame is received, if so, executing S23; if not, executing S21;

s23, authenticating the power failure broadcast frame;

As shown in fig. 6, (1) a broadcast conflict avoiding mechanism, which adopts a TDMA method is an effective method for solving broadcast conflicts. The method provides that each node enjoys its own unique time slot. During the time slot, only the node can transmit data. The key to implementing TDMA is the strict synchronization of each slave node time slot, so that it can be ensured that the node report time is strictly performed according to the time slot, thereby avoiding the time slot collision which may occur.

And a time slot synchronization mechanism, a broadcast reporting mode in power failure real-time reporting and a TDMA mechanism are used for working. Each slave node reports in its own time slot, thus avoiding the conflict caused by broadcast reporting. In order to report each slave node strictly according to its own time slot, the design of the time slot synchronization mechanism becomes crucial.

(1) The time slot setting is designed by the maximum number of station nodes being 800 nodes, each node occupies one bit, the frame length carried by one frame of 800 nodes is 147 bytes (800 nodes/8 bits are 100 bytes, and information such as a frame header and a time slot is 147 bytes), the air rate is 10Kbps for transmission, 117.6ms is needed for transmitting the maximum power failure frame (800 nodes), the processing time redundancy of each frame is about 30ms, and therefore one time slot time is designed to be 150 ms.

(2) The interval of the synchronization time slot is set, the allocated time slot needs all the nodes to time according to the starting time, and the synchronization frame can be sent only when the nodes run to the self time slot (belonging to the sending time of the communication module). The time slot synchronous frame is started by the specified time of the central node, and other slave nodes forward and synchronously time according to the time slots of the slave nodes.

Because the clock offset of each chip is considered and calculated by the crystal oscillator precision of 15PPM, the master node synchronizes time slots every 30 minutes, and the requirement of time deviation precision is met. The calculation is as follows:

the error range for 1s is: 1s 15PPM 15 us;

the error range of 30min is: 30 × 60 × 15us ═ 27ms < redundant time 30 ms.

(3) Time 0 of the synchronization slot

The starting time of the synchronous frame initiated by the central node (communication module) is 0 moment, the slave node (communication module) calibrates the synchronous clock of the slave node according to the synchronous signal of the central node, and broadcasts and forwards the synchronous clock frame initiated by the central node.

(2) The power failure information transmission mechanism is characterized in that if the power failure information carried by each slave node is richer in the power failure broadcast reporting process, the central node can gather the power failure information of the whole distribution area more easily and successfully. And the effect of losing information during part of the slave node broadcast transmission (since information lost by one slave node may be carried by other slave nodes) can be eliminated. In order to carry as much outage information as possible for each slave node, it is an efficient scheme to map each slave node by using time slots. The time slot is distributed to each slave node by the central node when the channel network is constructed, and the time slot is unique in a station area.

In order to shorten the length of the broadcast reporting frame as much as possible, the power failure information of one node is represented by 1 Bit. The position of the bit represents the size of the time slot, the value of the bit represents the power failure state of the time slot, 1 represents power failure, and 0 represents no power failure. The design enables the highest transmission efficiency, and the lowest byte number is used for representing the outage information of the slave nodes.

As shown in fig. 7, for the broadcast reporting of the overall work processing flow, a partial power failure occurs in the area, and the power failure meters are 7, 8, 9, 10, and 13 (red dots). After power failure, the nodes report the broadcast power failure according to the mode that the time slots allocated by the networking converge from bottom to top, and the steps are as follows:

(1) after detecting the power failure, the node 13 generates a power failure report frame according to a power failure report protocol and sends the power failure report frame;

(2) after the reported frame of the node 13 is received by the

nodes

12 and 10, the

nodes

12 and 10 record power failure information (recorded in a bitmap mode), the node 12 sends a power failure forwarding power failure information frame, and as the node 12 does not have power failure, only 13 nodes exist in a power failure information domain;

(3) the node 11 does not receive the power failure frame and does not have power failure, so that the node is not sent;

(4) the node 10 carries a node 13 and reports power failure information with a power failure information bitmap of the node;

(5) repeating the steps, and finally forwarding the power failure information of the

nodes

7, 8, 9, 10 and 13 to the master node through the node 1;

(6) when the master node receives the power failure reporting information of the nodes in the network, the master node records the power failure reporting information and broadcasts a reporting time slot diagram as shown in fig. 8.

As shown in fig. 9, in an actual application scenario of real-time reporting of power failure, the non-powered node does not actively initiate reporting of power failure information, but only triggered by a broadcast frame of real-time reporting of power failure of other nodes in the distribution room. The nodes without power failure can collect and forward on own time slot after receiving the trigger of other nodes, thereby completing the transmission process of one-time power failure real-time reporting. If the node without power failure does not receive the broadcast frame trigger of the surrounding nodes after the power failure occurs in the distribution room, the node continues to work normally and does not participate in the broadcast transmission process of the power failure real-time report.

As shown in fig. 9, the broadcasting process of the uninterruptible node includes the steps of:

s33, judging whether the time slot of the slave node is over, if so, waiting for the next time slot, continuously monitoring the power failure broadcast frame of the slave node nearby, updating the bitmap information of the slave node, and executing S35; if not, executing S34;

s35, judging whether the time slot of the user arrives, if so, executing S36; if not, returning to S34;

The information collecting mechanism of the power failure node is used in the broadcasting stage in order to improve the success rate of power failure real-time reporting, and the influence of the broadcasting information loss of individual slave nodes on the overall reporting success rate can be effectively reduced. Under the mechanism, the power failure information of one node is recorded by a plurality of nearby nodes, and as long as one slave node successfully reports the power failure information, the power failure information of the slave node can be normally identified and detected by the central node. The basis of the convergence mechanism is that a section of fixed length Byte (currently 100 bytes) is designed in the reported broadcast frame to specially store the power failure information of the whole station area, and the section of fixed length Byte is called as a bitmap. Each node has a unique time slot in the station area, and the power failure state of the node can be represented by using 1 bit. 100 bytes contains 800 bits, which can indicate the power failure status of 800 nodes, for example, the power failure of time slot 3, bit3 of 1Byte is 1, the power failure of time slot 9 is not, bit2 of 2Byte is 0, and so on. When power failure occurs, the nodes can monitor the power failure broadcast reporting condition of the nearby nodes. For the power failure real-time broadcast report of the node in the station area, the node can acquire bitmap information of the node and is used for updating the bitmap of the node. From the realization principle, the intercepted bitmap information is continuously merged with the bitmap information of the bitmap information, which is specifically as follows:

and others: 10110001 … … 10000000

Self: 10000101 … … 00101000

Pooling

Updating: 10110101 … … 10101000

As shown in fig. 9, when the module detects that the node has a power failure or has not received a power failure broadcast trigger, the broadcast reporting process of the node is started, the collection mechanism also starts synchronously, and when the node waits for the arrival of the self time slot, the node performs collection operation with the bitmap of the node every time the node receives the power failure broadcast report, and the collection operation flow is not terminated until the arrival of the self time slot.

After power failure occurs, reporting the power failure to the first stage: and a unicast reporting stage. And after the power failure node carries out random delay, unicast reporting is carried out, and the unicast reporting success rate is low under the condition of power failure in the transformer area. And a second stage: in the broadcast reporting stage, the power failure node with the largest time slot sends the broadcast, and nodes in the network broadcast and forward according to the rule that the time slot is from large to small according to a TDMA mechanism. Each node carries fixed-length time slot bitmap information, and FF in the graph represents that all time slots in one byte are in a power-off state. Through the convergence mechanism, the power failure information of the nodes in the whole area is reported to the terminal quickly.

Example two:

it will be understood by those skilled in the art that all or part of the steps for implementing the above-described method embodiments may be performed by hardware associated with a computer program. The computer program may be stored in a computer readable storage medium, the storage medium stores the computer program, and when the computer program is executed (for example, by a processor), the computer program performs steps including the foregoing method for reporting the power outage in real time, where the storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Example three:

the invention also provides an embodiment of the power failure real-time reporting device, which comprises a processor and a memory; the memory is used for storing computer programs, and the processor is used for executing the computer programs stored by the memory, so that the processor executes the steps of the embodiment of the power failure real-time reporting method.

Example four:

the invention also provides a system for reporting the power failure in real time, which comprises a central node and a slave node which is in wireless communication with the central node; specifically, each slave node comprises a processor and a memory; the memory is used for storing the computer program, and the processor is used for executing the computer program stored in the memory, so that the processor executes the steps of the embodiment of the power failure real-time reporting method.

In this embodiment, each slave node further includes a power outage sensor connected to the processor, a power supply module, a clock unit, and a zero-crossing detection circuit. Specifically, the power failure sensor is used for detecting whether the slave node has power failure; the power supply module comprises a super capacitor and is used for supplying power in a short time after the slave node is powered off, so that the power-off node can finish power-off real-time reporting; the clock unit is used for completing clock synchronization; and the zero-crossing detection circuit is used for carrying out zero-crossing detection on the commercial power and carrying out AD sampling detection on weak current.

After reading the following description, it will be apparent to one skilled in the art that various features described herein can be implemented in a method, data processing system, or computer program product. Accordingly, these features may be embodied in less than hardware, in all software, or in a combination of hardware and software. Furthermore, the above-described features may also be embodied in the form of a computer program product stored on one or more computer-readable storage media having computer-readable program code segments or instructions embodied in the storage medium. The readable storage medium is configured to store various types of data to support operations at the device. The readable storage medium may be implemented by any type of volatile or non-volatile storage device, or combination thereof. Such as a static hard disk, a random access memory (SRAM), an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a programmable read-only memory (PROM), a read-only memory (ROM), an optical storage device, a magnetic storage device, a flash memory, a magnetic or optical disk, and/or combinations thereof.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A power failure real-time reporting method is characterized by being applied to a power failure real-time reporting system, wherein the power failure real-time reporting system comprises a central node and a plurality of slave nodes; the plurality of slave nodes include a power-off node and a power-off-free node, and the method comprises the following steps:

unicast reporting: the power failure node reports a power failure reporting frame to the central node through a reporting route stored by the power failure node; the power failure node is the slave node in power failure;

2. The method for reporting power outage in real time as claimed in claim 1, wherein the unicast reporting includes the following steps:

s12, broadcasting delay;

s13, carrying out random time delay;

s14, judging whether the air is idle, if so, executing S15; if not, executing S13;

3. The method according to claim 2, wherein the central node and the plurality of slave nodes form a micropower wireless MESH network, and the central node allocates a time slot uniquely corresponding to each slave node according to the number of the slave nodes in the micropower wireless MESH network.

4. The method according to claim 3, wherein the time slots of each slave node are cyclically synchronized by the synchronization frame broadcasted by the central node at preset intervals.

5. The method as claimed in claim 4, wherein the blackout broadcast frame includes bitmap information, and the bitmap information is stored with blackout information of all the slave nodes in the micropower wireless MESH network.

6. The method for reporting power outage in real time as claimed in claim 5, wherein the broadcasting reporting specifically includes steps of:

s23, authenticating the power failure broadcast frame;

7. The method according to claim 6, wherein the broadcasting processing step of the non-powered node comprises:

8. A computer-readable storage medium, wherein the storage medium stores thereon a computer program, and the computer program is executed to implement the real-time reporting method for power outage of any one of claims 1 to 7.

9. A power failure real-time reporting device is characterized by comprising a processor and a memory;

the memory is used for storing computer programs, and the processor is used for executing the computer programs stored in the memory so as to enable the processor to execute the power failure real-time reporting method of any one of claims 1 to 7.

10. A power failure real-time reporting method system is characterized by comprising a central node and a plurality of slave nodes which are in wireless communication with the central node, wherein the slave nodes comprise power failure nodes and non-power failure nodes;

the slave node comprises a processor and a memory; the memory is used for storing computer programs, and the processor is used for executing the computer programs stored in the memory so as to enable the processor to execute the power failure real-time reporting method of any one of claims 1 to 7.