Dual-mode power grid emergency communication management method and system

Abstract

The application provides a dual-mode power grid emergency communication management method and system, belonging to the power line carrier communication field, and solves the problem of power grid emergency communication of simultaneously supporting a high-speed power carrier communication channel and a high-speed wireless radio frequency communication channel. The method comprises the following steps: when an emergency event triggering condition is met, based on the reliability target and the time delay constraint corresponding to the semantic category of emergency service data, the emergency service data is encoded into cross-media fragmentation data containing information fragments and error correction redundancy fragments; a cross-media fragment index is generated for the cross-media fragmentation data; during the emergency communication, according to the real-time link state of the high-speed power carrier communication channel and the high-speed wireless radio frequency communication channel, the allocation ratio of the information fragments and the error correction redundancy fragments between the two channels is determined, and the information fragments and the error correction redundancy fragments are respectively sent through the corresponding channels.

Description

Technical Field

[0001] This application relates to the field of power line carrier communication technology, and in particular to a dual-mode power grid emergency communication management method and system. Background Technology

[0002] In a dual-mode system combining high-speed power line carrier communication (HPLC) and high-speed wireless radio frequency communication (HRF), this architecture integrates the characteristics of both communication methods: on the one hand, it leverages the existing power line network for convenient local access; on the other hand, it enhances coverage flexibility and system fault tolerance through wireless channels. This design fully utilizes the coverage advantage of power lines—which allows for immediate deployment—and provides redundancy and interference suppression through wireless links, thus better meeting the needs of the low-voltage distribution side of smart grids in terms of reliability, continuity, and economy.

[0003] However, this dual-mode system also faces specific challenges in real-world environments. HPLC communication in low-voltage areas is susceptible to broadband pulse noise and spectral hole interference caused by grid-connected power supplies, rectifiers, frequency converters, and photovoltaic inverters. Meanwhile, HRF in enclosed spaces or complex structures such as metal cabinets, shafts, or basements may suffer from severe multipath effects and signal obstruction. Summary of the Invention

[0004] This application provides a dual-mode power grid emergency communication management method and system, which can solve the problem of power grid emergency communication that simultaneously supports high-speed power line carrier communication channels and high-speed wireless radio frequency communication channels.

[0005] The first aspect of this application provides a dual-mode power grid emergency communication management method, including: When the emergency event triggering conditions are met, based on the reliability target and latency constraints corresponding to the semantic category of the emergency business data, the emergency business data is encoded into cross-media fragmented data containing information fragments and error correction redundancy fragments, wherein the information fragments and the error correction redundancy fragments satisfy an error correction coding relationship that can be executed for merged decoding. A cross-medium fragment index is generated for the cross-medium fragmented data. The cross-medium fragment index includes at least a unified sequence number field and a fragment type identifier, so that information fragments transmitted via the high-speed power line carrier communication channel and error-correcting redundant fragments transmitted via the high-speed radio frequency communication channel can be aggregated at the receiving side according to a unified sequence number. During emergency communication, the information segment and the error correction redundancy segment are distributed between the two channels according to the real-time link status of the high-speed power line carrier communication channel and the high-speed wireless radio frequency communication channel, and are then transmitted through their respective channels.

[0006] Optionally, it also includes: At the concentrator or edge gateway side, the fragments from the two channels are sequenced and aggregated based on the cross-media fragment index, and the aggregated fragments are merged and decoded to recover the emergency service data.

[0007] Optionally, determining the sharing ratio of the information segment and the error correction redundancy segment between the two channels based on the real-time link status of the high-speed power line carrier communication channel and the high-speed radio frequency communication channel includes: Using one or more of the following as independent variables—link packet loss rate, latency jitter, available throughput, and energy consumption budget—the code rate-redundancy mapping relationship corresponding to the semantic category is queried or calculated to obtain the redundancy of the error correction redundancy segment and the amortization ratio. The mapping relationship is then adjusted online when the change of the independent variable exceeds a threshold.

[0008] Optionally, the cross-media fragment index further includes fragment lifetime and window identifier, and the method further includes: The concentrator or edge gateway performs sequence number aggregation only on fragments with the same window identifier within the said lifetime limit, and discards or downgrades fragments that have not been aggregated when the lifetime limit is exceeded, in order to limit buffer usage and processing latency during emergency communication. When the emergency service data is at least one of metering certificate, remote signaling alarm or remote control confirmation, the high-speed wireless radio frequency communication channel prioritizes sending error correction redundancy segments and service header information, and the high-speed power line carrier communication channel subsequently sends the data body of the information segment, so that the receiving side can establish an aggregation context in advance and shorten the retransmission waiting time after receiving the error correction redundancy segments and service header information.

[0009] Optional, also includes: During the operational preparation phase, an emergency energy substitute list is established for at least one emergency communication terminal. The emergency energy substitute list includes the equipment identification and energy supply capacity parameters of at least one controllable power electronic device among micro inverters, energy storage battery management systems, or smart switches located in the same transformer area. Record the line voltage drop or equivalent power supply path loss parameters between the emergency communication terminal and the corresponding emergency energy substitute for use in pulse power supply triggering and duration configuration under low power conditions.

[0010] Optional, also includes: When the emergency communication terminal is detected to be in a low-power state due to power outage or low-voltage collapse and the high-speed wireless radio frequency communication channel meets the minimum available communication conditions, the concentrator or edge gateway sends a pulse power supply command to the emergency energy substitute through the high-speed wireless radio frequency communication channel. The pulse power supply command includes the power supply duration, the synchronization time window for the start of power supply, and the target emergency communication terminal identifier. The emergency communication terminal starts the high-speed power line carrier communication front-end and sends an extremely short emergency frame within the synchronization time window. The extremely short emergency frame includes one or more of the following: topology change information, fault phase sequence information, and last valid reading. After transmission is completed, the high-speed power line carrier communication front-end is shut down to reduce energy consumption.

[0011] Optional, also includes: Establish a pulse energy ledger to record the trigger time, duration, corresponding emergency energy substitute identifier, and energy supply result of each pulse energy supply; Based on the energy ledger, an upper limit is set on the pulse energy supply budget for a single day or a single event to limit the backup power consumption of the emergency energy substitute; After the low-voltage state is lifted, the normal power supply path is restored, and the delivery rate and retransmission count of the extremely short emergency frame are counted for adaptive adjustment of subsequent pulse power supply command parameters.

[0012] A second aspect of this application provides a dual-mode power grid emergency communication management system, including: The encoding unit is used to encode the emergency business data into cross-media fragmented data containing information fragments and error correction redundancy fragments based on the reliability target and time delay constraint corresponding to the semantic category of the emergency business data when the emergency event triggering conditions are met. The information fragments and the error correction redundancy fragments satisfy an error correction encoding relationship that can be executed for merged decoding. A generation unit is used to generate a cross-medium fragment index for the cross-medium fragmented data. The cross-medium fragment index includes at least a unified sequence number field and a fragment type identifier, so that information fragments transmitted via the high-speed power line carrier communication channel and error-correcting redundant fragments transmitted via the high-speed wireless radio frequency communication channel can be aggregated at the receiving side according to a unified sequence number. The determining unit is used to determine, during emergency communication, the sharing ratio of the information segment and the error correction redundancy segment between the two channels based on the real-time link status of the high-speed power line carrier communication channel and the high-speed wireless radio frequency communication channel, and to transmit them respectively through the corresponding channels.

[0013] A third aspect of this application provides an electronic device, including a memory and a processor, wherein the processor is used to execute a computer program stored in the memory to implement the steps of the dual-mode power grid emergency communication management method described above.

[0014] A fourth aspect of this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the dual-mode power grid emergency communication management method described above.

[0015] In summary, the dual-mode power grid emergency communication management method provided in this application encodes emergency service data into cross-medium fragmented data containing information fragments and error correction redundancy fragments based on the reliability target and latency constraint corresponding to the semantic category of the emergency service data when the emergency event triggering conditions are met. The information fragments and the error correction redundancy fragments satisfy an error correction coding relationship that allows for merge decoding. A cross-medium fragment index is generated for the cross-medium fragmented data. This index includes at least a unified sequence number field and a fragment type identifier, enabling information fragments transmitted via the high-speed power line carrier communication channel and error correction redundancy fragments transmitted via the high-speed radio frequency communication channel to be aggregated at the receiving end according to a unified sequence number. During emergency communication, the distribution ratio of the information fragments and error correction redundancy fragments between the two channels is determined based on the real-time link status of the high-speed power line carrier communication channel and the high-speed radio frequency communication channel, and they are transmitted through their respective channels. Thus, emergency service data is decomposed into information fragments and error correction redundancy fragments, and these two types of fragments are distributed across two links for transmission. At the receiving end, they are aggregated according to a unified sequence number and then merged and decoded to recover the original data. Error modes on the two media are often asynchronous. When a data segment is damaged on one medium, the redundant segment delivered by the other medium may still be sufficient for the receiver to recover the data, thus transforming a single-link failure into a cross-link recoverable failure. Furthermore, by adjusting the redundancy ratio based on the real-time link status, more redundancy is allocated to the more stable side, and more information is allocated to the side with higher throughput, thereby achieving a higher success rate and lower latency under emergency conditions.

[0016] Correspondingly, the systems, electronic devices, and computer-readable storage media provided in the embodiments of the present invention also have the above-mentioned technical effects. Attached Figure Description

[0017] Figure 1 A flowchart illustrating a possible dual-mode power grid emergency communication management method provided in this application embodiment; Figure 2 A schematic structural block diagram of a possible dual-mode power grid emergency communication management system provided in this application embodiment; Figure 3 A schematic diagram of the hardware structure of a possible dual-mode power grid emergency communication management system provided in this application embodiment; Figure 4 A schematic structural block diagram of a possible electronic device provided in an embodiment of this application; Figure 5 This is a schematic structural block diagram of a possible computer-readable storage medium provided for embodiments of this application. Detailed Implementation

[0018] This application provides a dual-mode power grid emergency communication management method and related equipment, which can solve the problem of power grid emergency communication that simultaneously supports high-speed power line carrier communication channels and high-speed wireless radio frequency communication channels.

[0019] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus. The technical solutions of the embodiments of this application will now be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them.

[0020] Please see Figure 1 The flowchart below illustrates a dual-mode power grid emergency communication management method provided in this application embodiment, which may specifically include: S110-S130.

[0021] S110, when the emergency event triggering conditions are met, based on the reliability target and time delay constraint corresponding to the semantic category of the emergency service data, the emergency service data is encoded into cross-media fragmented data containing information fragments and error correction redundancy fragments, wherein the information fragments and the error correction redundancy fragments satisfy an error correction coding relationship that can be executed for merged decoding.

[0022] S120, generate a cross-medium fragment index for the cross-medium fragmented data. The cross-medium fragment index includes at least a unified sequence number field and a fragment type identifier, so that information fragments transmitted via the high-speed power line carrier communication channel and error-correcting redundant fragments transmitted via the high-speed wireless radio frequency communication channel can be aggregated at the receiving side according to a unified sequence number.

[0023] S130, during emergency communication, based on the real-time link status of the high-speed power line carrier communication channel and the high-speed wireless radio frequency communication channel, the sharing ratio of the information segment and the error correction redundancy segment between the two channels is determined, and they are transmitted through the corresponding channels respectively.

[0024] Understandably, this method addresses not simply improving the reliability of a single link, but rather tackles two aspects of uncertainty simultaneously present in power grid emergency scenarios: high-speed power line carrier communication channels experience erase-type packet loss due to branch impedance jumps, noise pulses, and notch filters; while high-speed wireless radio frequency communication channels suffer from sudden packet loss and jitter due to obstructions, multipath propagation within metal enclosures, and transient interference. Traditional approaches typically involve primary / backup switching or duplicate transmission between the two links. However, common problems in emergency scenarios include delayed primary / backup switching leading to prolonged packet loss, duplicate transmission causing congestion and increased energy consumption, and the inability to guarantee end-to-end success even when both links are unstable.

[0025] For example, the concentrator or edge gateway continuously monitors emergency event triggering conditions. When it detects a smart circuit breaker tripping or reclosing action, a dense occurrence of distribution area over-limit alarms, an emergency mode command issued by the master station, or a significant degradation of link quality indicators to the threshold within a short time window, it immediately obtains the emergency service data to be uploaded from data sources such as energy meters, distribution transformer monitoring terminals, fault indicators, and switch status acquisition devices. It also adds metadata such as service type, generation time, sampling window identifier, data length, and device identifier to each piece of emergency service data. Subsequently, the edge side maps according to preset semantic categories. The table categorizes services, for example, classifying over-limit alarms, trip alarms, remote control confirmations, and reclosing results as high-timeliness and high-reliability categories; classifying fault waveform summaries, zero-sequence component anomaly summaries, and harmonic ratio mutation summaries as medium-timeliness and high-integrity categories; and classifying diagnostic logs and background situation data as low-timeliness and deferred categories. Reliability targets and latency constraints are configured for each category. Reliability targets can be expressed as the lower limit of the probability of successful recovery within a specified time window or the upper limit of the allowable loss rate. Latency constraints can be expressed as the maximum allowable end-to-end processing waiting window or the upper bound of the first packet confirmation. Emergency communication resources are limited and link states are uncertain; service requirements must first be transformed into calculable reliability and latency constraints to make informed choices in subsequent coding and allocation. Therefore, critical services receive higher resource priority and stricter timeliness guarantees during emergencies, while non-critical services are automatically downgraded to avoid link congestion. This can be quantified and verified by statistically analyzing the first packet latency quantiles, recovery success rates, and non-critical service occupancy ratios for different semantic categories during emergencies.

[0026] For example, for each emergency service data with configured reliability targets and latency constraints, the edge node first determines the fragmentation granularity and the upper limit of the number of fragments, so that a single fragment can be sent within the typical available throughput and single transmission time budget of the two types of channels, and the loss of fragments will not lead to the overall unrecoverable situation. Then, based on the reliability targets, the error correction coding relationship is selected and the redundancy is calculated. For example, for alarm data, a coding method with lower computational complexity and clear recovery threshold is selected, and for waveform summary data, a redundancy configuration with stronger recovery capability is selected to ensure that the original content can still be recovered under sudden packet loss conditions. The encoding result is output as cross-media fragmented data, which contains several information fragments and several error correction redundancy fragments. The information fragments carry the payload of the original data, and the error correction redundancy fragments carry the redundant information generated by encoding that can be used for recovery. On the receiving side, as long as the fragments are aggregated to a set that meets the decoding conditions, the merged decoding can be performed to recover the emergency service data. In emergency scenarios, power line carrier and radio frequency often exhibit sudden erasures or short-duration deep fading. Relying on retransmissions is amplified by round-trip delays and congestion, making it difficult to meet strict latency requirements. Error correction redundancy enables the receiver to recover data even when fragments are incomplete, thus transforming the waiting for retransmissions into direct recovery using redundancy. As a result, the end-to-end recovery success rate of emergency service data is significantly improved, the number of retransmissions required for successful decoding is significantly reduced, and the latency tail of critical services converges. This can be verified by recording the total number of transmissions required for successful recovery per unit, the decoding success rate, the proportion of decoding failure reasons, and the high-quantile changes in the latency of the first packet of critical services.

[0027] For example, the edge node assigns a unified sequence number field to each emergency service data item. This unified sequence number field can be constructed from the terminal identifier, event sequence counter, and generation time, ensuring uniqueness within a preset lifetime window. A segment type identifier is written to each segment to distinguish between information segments and error-correcting redundant segments. A segment sequence number or encoding parameter hint field can also be added to help the receiver determine the set of segments required for decoding. Subsequently, the unified sequence number field and segment type identifier are sent along with the segments as cross-media segment indexes. This allows information segments from the high-speed power line carrier communication channel and error-correcting redundant segments from the high-speed radio frequency communication channel to be merged into the same aggregation cache entry at the concentrator or edge gateway side according to the unified sequence number. Merging decoding is triggered when the aggregation reaches the decoding threshold. If the decoding condition is not met after the lifetime limit, discarding or degradation processing is performed to control cache usage and processing latency. Cross-media transmission inevitably produces out-of-order and latency differences. Only by establishing a clear binding between the unified sequence number and segment type can the receiver determine which segments belong to the same original data and correctly perform merging decoding. At the same time, the lifetime limit can prevent fragments from occupying memory for extended periods, causing system jitter. Therefore, cross-media aggregation mispairing is significantly reduced, decoding is triggered more promptly, cache peaks are controllable, and recovery failures caused by out-of-order delivery are reduced. This can be verified by statistically analyzing the aggregation wait time distribution, peak aggregation cache usage, number of mispairings, timeout discard ratio, and the proportion of index-related reasons in decoding failures.

[0028] For example, during emergency communication, the concentrator or edge node maintains short-term link status statistics for both the high-speed power line carrier communication channel and the high-speed wireless radio frequency communication channel. These statistics include short-window packet loss rate, acknowledgment round-trip time, latency jitter, instantaneous available throughput, and the number of consecutive failures. Based on these status parameters and the reliability targets and latency constraints corresponding to the emergency service data, the concentrator calculates the allocation ratio of information segments and error correction redundancy segments between the two channels. For instance, when the wireless channel is more stable but has lower throughput, more error correction redundancy segments are allocated to the wireless channel to improve the recovery probability, while some information segments are handled by the carrier channel to save wireless resources. When a sudden consecutive failure occurs due to a branch impedance jump in the carrier channel, the error correction redundancy segments are temporarily transferred to the wireless channel, and the proportion of information segments on the carrier side is reduced to avoid wasting transmission opportunities on the failed channel. The allocation ratio adjustment should set minimum and maximum redundancy boundaries and change thresholds to prevent frequent jumps in allocation due to short-term link fluctuations. At the same time, a redundancy preemptive strategy can be adopted for critical alarms to enable the receiver to establish an aggregation context as early as possible and to recover in a timely manner even when some information segments are lost. Error modes in the two channels are often out of sync. Dynamic resource allocation can distribute redundant resources to media more likely to deliver the data, and allocate information payloads to media with higher throughput, thereby minimizing the overall number of transmission rounds and congestion risk while meeting reliability and latency targets. As a result, the success rate of critical service recovery during emergencies is improved, and the high percentile of the first packet latency decreases. At the same time, the total number of retransmissions and invalid transmissions of the system is reduced. This can be quantitatively verified by comparing the total number of successful recovery transmissions per unit before and after resource allocation, the smoothness of the redundancy ratio curve, the first packet latency percentile of critical services, and the load occupancy and number of congestion events on both channels during emergencies.

[0029] In some examples, it also includes: At the concentrator or edge gateway side, the fragments from the two channels are sequenced and aggregated based on the cross-media fragment index, and the aggregated fragments are merged and decoded to recover the emergency service data.

[0030] For example, the concentrator or edge gateway receives fragment data frames from a high-speed power line carrier communication channel and a high-speed radio frequency communication channel, respectively. Each fragment data frame carries a cross-media fragment index, which includes at least a unified sequence number field and a fragment type identifier. The concentrator or edge gateway maintains a local aggregated cache table organized by the unified sequence number field. Each entry in the cache table corresponds to a unified sequence number field and records the set of received fragments, the count of received fragments, the fragment type distribution, the first arrival time, and the lifetime under that sequence number field. When a new fragment arrives at any channel, the processor parses its unified sequence number field and archives it into the corresponding entry. If the entry does not exist, it is created and a timer is started. Then, according to the fragment type identifier, the fragment is placed into the information fragment set or the error correction redundant fragment set, and duplicate fragment detection is performed to avoid the same fragment being counted repeatedly in the decoding conditions. After archiving, the concentrator or edge gateway performs encoding... The parameter prompts or preset decoding thresholds determine whether the current entry meets the conditions for merging and decoding. The conditions for merging and decoding can be specifically set as the number of received segments reaching the minimum number required for decoding or the combination of information segments and error correction redundancy segments satisfying the error correction coding relationship and being solvable. Once the conditions are met, the decoding task is triggered, and the set of segments under the entry is used as input to perform merging and decoding to restore emergency service data. The decoding process outputs the restored data and the decoding confidence or verification result. If the restoration is successful, the restored data is written to the emergency upload queue and the cache entry corresponding to the unified sequence number field is released. If the decoding fails or the confidence is lower than the threshold, the concentrator or edge gateway performs differentiated processing according to the reason for failure. For example, it continues to wait for the remaining segments until the lifespan expires, or generates a request indication to prompt the sending side to increase the proportion of error correction redundancy segments. If the data cannot be restored after the lifespan expires, the entry is marked as timeout failure and the cache is released to suppress memory occupation. Cross-media transmission inherently suffers from out-of-order delivery and arrival delay differences. By unifying the sequence number field to merge segments from different channels into the same aggregation context, the receiving side can establish a definite decoding input set even when the arrival order of segments is uncertain. Error-correcting redundant segments are used to compensate for lost information segments, thus transforming the sudden erasure common in emergency scenarios into a recoverable decoding problem. Therefore, even if either channel experiences short-term degradation, emergency service data can still be recovered at the receiving side with a high probability, reducing recovery delay tails caused by waiting for retransmissions. Furthermore, lifespan limits and duplicate detection control the risks of buffer bloat and mispairing. The effectiveness can be quantitatively verified and evaluated using indicators such as recovery success rate, average aggregation waiting time, peak buffer usage, duplicate segment ratio, and distribution of decoding failure causes.

[0031] In some examples, determining the sharing ratio of the information segment and the error correction redundancy segment between the two channels based on the real-time link status of the high-speed power line carrier communication channel and the high-speed radio frequency communication channel includes: Using one or more of the following as independent variables—link packet loss rate, latency jitter, available throughput, and energy consumption budget—the code rate-redundancy mapping relationship corresponding to the semantic category is queried or calculated to obtain the redundancy of the error correction redundancy segment and the amortization ratio. The mapping relationship is then adjusted online when the change of the independent variable exceeds a threshold.

[0032] For example, the concentrator or edge gateway establishes short-term statistical windows for the high-speed power line carrier communication channel and the high-speed wireless radio frequency communication channel, respectively. Within the window, at least one of the following is continuously collected as independent variables: link packet loss rate, latency jitter, available throughput, and energy consumption budget. The packet loss rate can be obtained by statistically analyzing the sequence number field of the transmitted segment and the missing reception acknowledgments. The latency jitter can be characterized by the quantile difference or variance of the difference between the transmission timestamp and the reception timestamp of the segment within the window. The available throughput can be obtained by dividing the total effective payload successfully delivered within the window by the window duration. The energy consumption budget can be determined by the terminal power status, the proportion of reserve power, or the emergency energy consumption strategy parameters issued by the superior. To avoid frequent policy jumps caused by instantaneous spikes, the collected independent variables are robustly preprocessed before entering the subsequent mapping calculation. For example, an exponential moving average is used for the packet loss rate and throughput, and quantile truncation is used for jitter to remove extreme outliers. Each independent variable is also accompanied by the current statistical window length and confidence level label. Allocation and redundancy decisions rely on reliable estimates of link states. Robust preprocessing can limit the impact of short-pulse interference commonly seen in emergency scenarios to a controllable range. The allocation ratio changes more smoothly over time, and invalid adjustments caused by measurement noise are reduced, thereby reducing additional latency and control overhead caused by frequent reconfiguration.

[0033] For example, the semantic category identifier of the emergency service data to be sent is first read, and this semantic category is used as the query key or calculation entry for the mapping relationship. For example, over-limit alarms, trip alarms, and remote control confirmations are mapped to high timeliness and high reliability configuration files; fault recording summaries are mapped to high integrity configuration files; and diagnostic logs are mapped to degradeable configuration files. At the same time, corresponding constraint parameters are loaded for this semantic category, including the maximum allowed decoding waiting window, the expected lower limit of the recovery success probability, the maximum allowed redundancy occupancy ratio, and the maximum allowed energy consumption. These parameters can be issued by the master station or preset locally and take effect when the emergency mode is enabled. The differences in reliability and latency targets of different services must be reflected in redundancy and allocation ratio. Otherwise, the same mapping will lead to critical services competing for resources with non-critical services. Critical semantics obtain higher redundancy protection and better media delivery strategies under the same link state, so that the priority delivery and recoverability of critical services can still be maintained during emergency high load.

[0034] For example, the concentrator or edge gateway, based on the independent variable vector obtained in step one and the semantic category determined in step two, queries a pre-set code rate-redundancy mapping table or performs online calculations to obtain the redundancy of error correction redundant segments and the sharing ratio between the two channels. Here, code rate can be understood as the amount of effective information to be carried per unit time, redundancy can be specifically defined as the ratio of the number of redundant segments to the number of information segments or the proportion of redundant segments to the total number of segments, and sharing ratio can be specifically defined as the proportion of information segments carried by the power line carrier channel or the proportion of redundant segments carried by the radio frequency channel, etc., which are parameters that can be directly used for scheduling. When using the table lookup method, multi-dimensional discretization can be performed according to the packet loss rate interval, jitter interval, and throughput interval, and continuous parameters can be output by interpolation. When using the calculation method, the reliability target can be converted into a probability constraint of the number of segments to be received, and the minimum redundancy that satisfies the probability constraint can be obtained by combining the current packet loss rate of the two channels. Then, under the constraints of available throughput and delay window, the sharing ratio that satisfies the minimum number of transmission rounds can be solved. At the same time, the energy consumption budget is used as an upper limit constraint to limit the number of transmissions on the wireless side or to limit the duration of high-power mode. By explicitly mapping link quality to business objectives into redundant resource allocation and cross-media delivery strategies, the system can achieve predetermined recoverability and timeliness with minimal redundancy cost under uncertain link conditions. The decoding success rate can remain near the target even when the link degrades, while the total number of transmissions and redundancy usage will not increase uncontrollably. The effectiveness of the mapping strategy can be quantitatively verified by the number of segments required for successful recovery per unit, the decoding success rate, and the high percentile of the first packet delay of critical services.

[0035] For example, to avoid oversensitivity to normal fluctuations in independent variables, the concentrator or edge gateway sets a change threshold and minimum hold time for each independent variable, and calculates the change for each channel separately. For instance, it checks whether the increase in packet loss rate relative to the previous stable period exceeds the threshold, whether the quantile difference in latency jitter suddenly increases, whether available throughput remains below the threshold, and whether energy consumption budgets are downgraded to stricter limits. When the change in any key independent variable continuously exceeds the threshold within several consecutive statistical windows, or when a dense series of decoding failures occurs that are significantly inconsistent with the current mapping output, an online adjustment is triggered. The triggering reason and triggering time are recorded as a basis for subsequent interpretability and backtracking. This strategy update is based on continuous degradation rather than instantaneous spikes to reduce jitter caused by unnecessary parameter reconfiguration, decrease the number of adjustments to the amortization ratio and redundancy, reduce the fluctuation amplitude of link and decoding performance, and reduce the additional scheduling overhead introduced by frequent switching.

[0036] For example, once online adjustment is triggered, the concentrator or edge gateway performs a partial update to the bitrate-redundancy mapping relationship corresponding to the current semantic category. The update method can be to incrementally correct the corresponding interval in the mapping table. For example, when the packet loss rate increases, the redundancy output is increased and more redundant segments are allocated to the current more stable channel. When the throughput decreases or the latency window tightens, the single fragment size is reduced and the distribution ratio of information segments and redundant segments is reallocated within the carrying capacity. At the same time, constraints are imposed on the situation of tightening energy consumption budget, limiting the upper limit of redundancy distribution on the radio side and prioritizing the increase of information carrying ratio on the carrier side. After the update, a gradual implementation strategy is adopted to avoid abrupt changes. For example, the new parameters are gradually transitioned to in proportion within several transmission batches, and the decoding success rate and average aggregation waiting time of each batch are statistically analyzed as feedback indicators. If the new parameters do not meet expectations within the observation window, the system reverts to the previous stable version or enters another fine-tuning phase. Link status changes can disrupt the optimality of the original mapping. Online adjustments allow the system to redistribute redundant resources to the side more likely to succeed and rematch latency and energy consumption constraints. Under degraded link conditions, the decoding failure rate decreases, the success rate of critical service recovery increases, invalid retransmissions decrease, and the overall system load remains controllable. This can be verified by comparing the changes in decoding success rate, redundancy ratio, and allocation ratio before and after the adjustment with the latency quantile of critical services.

[0037] In some examples, the cross-media fragment indexing also includes fragment lifetime and window identifier, and the method further includes: The concentrator or edge gateway performs sequence number aggregation only on fragments with the same window identifier within the said lifetime limit, and discards or downgrades fragments that have not been aggregated when the lifetime limit is exceeded, in order to limit buffer usage and processing latency during emergency communication. When the emergency service data is at least one of metering certificate, remote signaling alarm or remote control confirmation, the high-speed wireless radio frequency communication channel prioritizes sending error correction redundancy segments and service header information, and the high-speed power line carrier communication channel subsequently sends the data body of the information segment, so that the receiving side can establish an aggregation context in advance and shorten the retransmission waiting time after receiving the error correction redundancy segments and service header information.

[0038] For example, when generating cross-media fragmented data for emergency service data on the transmitting side, in addition to configuring a unified sequence number field and fragment type identifier for each information fragment and error correction redundancy fragment, a window identifier is also configured for fragments belonging to the same emergency service transmission process, and a fragment lifespan is configured for this window. The window identifier is used to distinguish fragment sets formed in different emergency transmission batches, different sampling periods, or different service processing windows. For example, several information fragments and error correction redundancy fragments formed after the same remote signaling alarm is encoded all carry the same window identifier, while the next remote signaling alarm, even if it uses a similar fragment sequence number, is configured with a different window identifier to avoid cross-service mis-aggregation due to different transmission delays between the high-speed power line carrier communication channel and the high-speed radio frequency communication channel; the fragment lifespan is used to specify the longest valid period during which fragments in the current window are allowed to participate in aggregation. The time limit can be calculated from the moment the receiving side first receives any segment corresponding to the window, or it can be determined based on the window start time carried by the sending end in the service header information. Within the time limit, the concentrator or edge gateway first reads the window identifier carried by the arriving segment and only groups segments with the same window identifier and uniform sequence number that satisfy the correspondence into the same aggregation context. For segments with different window identifiers, even if the sequence number is the same or adjacent, different aggregation contexts are established for management. When configuring the specific time limit, it can be determined based on the latency constraints of the corresponding semantic category. For example, if remote control confirmation requires entering the subsequent control process in a short time, a relatively short time limit can be configured, while if metering certificates allow for a slightly longer reception wait, a relatively long time limit can be set. However, it is not advisable to infinitely expand the waiting range simply based on the maximum possible latency of the network. Under dual-mode transmission conditions, the arrival times of the two communication channels differ significantly. Wireless segments of the same emergency service may arrive first, while carrier segments may arrive after a considerable queuing delay. If waiting is based solely on a unified sequence number for an extended period, old segments that have lost their timeliness can easily become mixed with subsequent new services, while also causing a large number of incomplete aggregation contexts to occupy the buffer for an extended period. By using window identifiers to limit mutually paired segments to the same service processing range, and then using lifetime limits to confine this range to a timescale with actual service value, both cross-media out-of-order delivery and old segment retention problems can be solved simultaneously. For example, a remote signaling alarm may be formed into six cross-media segments. Three segments from the wireless channel arrive within tens of milliseconds, while the other three segments from the carrier channel are delayed due to tributary noise. As long as they arrive within the lifetime limit corresponding to the alarm window, they can normally enter the same aggregation context. If a carrier segment arrives much later, and the window has expired, even if its sequence number matches the old window, it will no longer participate in aggregation, avoiding impact on subsequent alarm processing.Therefore, the receiving side can more accurately determine the service attribution relationship between segments arriving from different communication media, reduce merging and decoding errors caused by cross-window mismatch and out-of-order delivery, and limit the buffer growth and processing delay caused by waiting for old segments. This can be verified by indicators such as the correct aggregation rate of segments in the same window, the number of cross-window mis-aggregation, the average aggregation waiting time, and the number of simultaneous aggregation contexts.

[0039] For example, after establishing an aggregation context for each window identifier, the concentrator or edge gateway maintains the corresponding lifetime timer state for that aggregation context and checks whether the current time is still within the lifetime limit each time a new segment arrives. When the lifetime limit expires, if the received information segment and the error correction redundancy segment have met the merging and decoding conditions required by the corresponding error correction coding relationship, the segment waiting can be directly ended and subsequent decoding processing can begin. However, if the current number of segments is insufficient, key sequence segment is missing, or the existing segment combination cannot meet the decoding conditions, the waiting for late segments will no longer be indefinitely delayed. Instead, the process will proceed based on the semantic category of the current emergency service, the completeness of the obtained content, and the service's requirements for timeliness and completeness. The system performs discarding or degradation processing based on requirements. Discarding can be used for fragments that have lost their business significance and are unrecoverable. For example, if a highly time-sensitive remote control confirmation still has only a few undecoded fragments after a specified waiting time, the corresponding cache for that window is released and the aggregation timeout is marked. Degradation processing can be used for content that still has business value, such as when the main data of a metering voucher is not fully recovered but the business header information, terminal identifier, and voucher time information have arrived completely. The existing content can be marked as incomplete and transferred to a degradation queue, allowing subsequent business processes to process it as incomplete data, rather than continuing to occupy the limited high-speed cache during emergency communication waiting for late-arriving fragments that have exceeded their actual business value. Different processing methods can also be adopted based on semantic categories. For example, if a remote signaling alarm has obtained valid content indicating the device identifier and alarm type, but detailed extended fields are missing, the basic alarm can be retained as a degradation result. For data that must be completely complete to have business significance, it is discarded and a timeout status is recorded when the decoding conditions are not met. The resource constraints of emergency communication systems are manifested not only in limited channel bandwidth but also in limited receiver buffer capacity and processing queues. If a large number of dual-mode segments remain in a state of waiting for completion due to an anomaly in one of the links, old events will continuously occupy memory, decoding tasks, and queue positions, thus blocking subsequent more important new alarms. Therefore, it is necessary to unify the communication validity period and service validity period of segments based on their lifespan, and release resources in a timely manner when segments have lost their value for waiting. At the same time, adopting two different results—discarding and downgrading—instead of deleting all of them, can preserve as much information that has been successfully transmitted and still has judgment value as possible. For example, if twenty remote signaling alarms are generated consecutively during a high-fault phase, and three of them cannot be completed due to instantaneous deep fading of the carrier channel, the traditional infinite waiting scheme will continuously retain three large aggregate buffer entries, which may affect the entry of subsequent alarms into the decoding queue. However, this scheme, after the expiration of their respective lifespans, determines whether a basic alarm can be formed based on the obtained radio service header and redundant content. If it can be formed, it is output as a downgraded result; if it cannot be formed, it is discarded in time, thereby releasing the buffer for subsequent new events.This can significantly suppress cache backlog during high-concurrency emergency events, reduce the probability of old events blocking new events, and make the upper limit of processing latency more controllable. At the same time, it avoids the complete loss of all received information due to simple timeout deletion. It can be verified using indicators such as aggregated cache peak, number of timeout entries, percentage of degraded output, queuing time for new events, and cache resource release speed.

[0040] For example, when emergency service data is identified as at least one of metering certificates, remote signaling alarms, or remote control confirmations, the transmitting side no longer simply sends data to both media simultaneously according to the generation order of information fragments and error correction redundancy fragments. Instead, it prioritizes the transmission based on the importance of the service content and the order in which information is needed to establish the aggregation context. Specifically, it first sends the service header information and the corresponding error correction redundancy fragments through a high-speed wireless radio frequency communication channel. The service header information may at least carry the unified sequence number field, window identifier, semantic category, source terminal identifier, fragment quantity, or decoding parameter prompts for the current emergency service. This allows the concentrator or edge gateway to transmit the data before receiving the information fragment data from the high-speed power line carrier communication channel. Beforehand, an aggregation context corresponding to the emergency service can be established, its lifespan determined, a fragment cache location created, and the corresponding merging and decoding parameters loaded. Error correction redundant fragments are sent together with the service header information with priority, so that the receiving side has accumulated some redundant information that can be used to recover missing fragments in advance as subsequent information fragments arrive. Then, the sending side transmits the information fragment data body carrying the main effective payload through the high-speed power line carrier communication channel. Each time the receiving side receives a data body fragment, it can directly put it into the established aggregation context and check whether the current fragment set meets the merging and decoding conditions, without having to wait for the information fragment to arrive to identify which service the data belongs to, apply for a cache, and establish a decoding state. The reason for adopting this order for metering certificates, remote signaling alarms, and remote control confirmations is that although the data volumes of these types of services may differ in size, they all have strong timeliness or service determinism requirements. Among them, remote signaling alarms and remote control confirmations especially require the rapid identification of the service identity and its importance level, while metering certificates require the receiving side to accurately identify the metering cycle to which the segment belongs. Sending the service header first through the wireless channel can prioritize solving the problem of determining the data type and processing method. At the same time, in emergency environments, HPLC may experience delays in some data volume segments due to line impedance jumps or noise. Error correction redundant segments that arrive early can participate in the recovery before the data volume is fully received, so that the receiving side can complete the service data recovery as soon as it obtains the combination that meets the decoding threshold, without having to continue waiting for all the original information segments or initiating regular retransmission. For example, after a smart circuit breaker activates, it generates a remote signaling alarm. The HRF first sends a service header containing the terminal identifier, alarm type, window identifier, and decoding parameters, and simultaneously sends two error correction redundancy segments. Upon receiving these, the concentrator immediately establishes a high-priority aggregation context for the alarm. Subsequently, the HPLC sends four information segments, of which the third segment fails to arrive due to short-term noise generated by the switching action. At this point, the concentrator can use the already received error correction redundancy segments and other information segments to meet the decoding conditions and restore the complete alarm without waiting for the third segment to be retransmitted.For example, for measurement certificates, the HRF can first send header information such as the terminal to which the certificate belongs, the measurement period, and the cross-media index. The HPLC then carries a larger volume of measurement data, utilizing the data carrying capacity of the carrier channel and enabling the receiving side to determine the ownership of the data early on. This step forwards the small volume of high-value control information needed to establish the aggregation context and the error correction resources to resist fragment loss to the faster and more flexible wireless medium, while allowing the larger payload to be transmitted subsequently via the power line carrier medium. This allows the two communication media to not only carry different data content but also to cooperate sequentially according to the processing dependency of merging and decoding. Therefore, it can reduce the time required for the receiving side to establish the aggregation context from the first fragment, reduce the overhead of temporary storage and reclassification caused by out-of-order arrival of information fragments, and reach the decoding condition earlier by utilizing the error correction redundancy obtained in advance when some information fragments of HPLC arrive late or are lost, thereby shortening the retransmission waiting time. This can be quantitatively verified by the time from the arrival of the service header to the establishment of the aggregation context, the processing waiting time after the arrival of the first HPLC information fragment, the average time required to reach the decoding condition, the actual number of retransmissions, and the complete recovery delay of the measurement certificate, remote signaling alarm, and remote control confirmation.

[0041] In some cases, considering that in emergency scenarios on the distribution side, power outages and low-voltage collapses often lead to a dual failure of the communication system: First, high-speed power line carrier communication relies on the power supply and coupling conditions of the power line; a power outage or low voltage will cause the terminal's carrier front-end to lose power or become unable to transmit stably; second, although high-speed wireless radio frequency communication does not rely on the power line itself, emergency communication terminals usually also require local power supply. Once the battery is low or in sleep mode for energy saving, the radio frequency link may also become unavailable. More importantly, the data that needs to be transmitted most in the early stages of an emergency is often extremely short but high-value critical information, such as topology changes, fault phase sequence, last valid readings, and switch status changes. If this information cannot be transmitted within the power outage window, it will directly affect the master station's judgment and dispatch decisions. In some examples, this also includes: During the operational preparation phase, an emergency energy substitute list is established for at least one emergency communication terminal. The emergency energy substitute list includes the equipment identification and energy supply capacity parameters of at least one controllable power electronic device among micro inverters, energy storage battery management systems, or smart switches located in the same transformer area. Record the line voltage drop or equivalent power supply path loss parameters between the emergency communication terminal and the corresponding emergency energy substitute for use in pulse power supply triggering and duration configuration under low power conditions.

[0042] For example, during the system commissioning or routine maintenance preparation phase, the main station or concentrator initiates an emergency power supply capacity registration process. This process screens power electronic devices within the same distribution area that may still possess instantaneous controllable output capabilities during power outages or low-voltage collapses, forming an emergency energy partner list. These power electronic devices include at least one or more of the following: micro-inverters, energy storage battery management systems, and smart switches with controllable closing or bypass power supply capabilities. During the screening process, the concentrator issues capacity reporting instructions to candidate devices or reads their existing equipment ledgers, collecting equipment identification information and available power supply capacity parameters. These parameters include at least the maximum duration of the available pulse power supply, the maximum peak current or peak power, the maximum number of allowed triggers, the minimum interval time, and the allowed triggering conditions. The current availability status criteria are used to establish a correlation between this information and the emergency communication terminal identifier, ensuring that each emergency communication terminal corresponds to at least one or more candidate energy partners. In this step, the power supply capacity of the emergency communication terminal itself is limited under low power conditions, while the distributed power electronic devices in the distribution area can usually still output controllable energy within a short time window. By completing the identification and parameter solidification of available energy resources in the operation preparation phase, short-pulse power supply can be quickly triggered with minimal signaling overhead when an emergency occurs, thereby improving the transmittability of critical emergency frames under extreme conditions. As a result, the power supply decision after emergency triggering does not rely on manual intervention and starts faster. The failure rate of emergency frame transmission due to the lack of available partners for the terminal decreases, and this can be quantitatively verified by statistical indicators such as list coverage, partner availability, and latency from emergency triggering to the issuance of power supply command.

[0043] For example, to ensure the predictability and controllability of pulsed power supply under subsequent low-power conditions, the concentrator or edge gateway calibrates the power supply path parameters of the pairing relationship between the emergency communication terminal and the emergency energy partner during the operational preparation phase. The calibration can be performed using a combination of low-duty-cycle trial power supply and readback measurement. Specifically, without affecting normal power supply and power quality, the emergency energy partner outputs a test pulse with limited amplitude and duration. The emergency communication terminal then measures and reports the terminal voltage rise, instantaneous current, or front-end power-on success flag. Simultaneously, the concentrator estimates the line voltage drop based on the line topology, conductor length, and load status, and calculates the equivalent power supply path loss parameters accordingly. These loss parameters can specifically represent the terminal voltage attenuation ratio, equivalent series resistance, or equivalent energy transfer efficiency under a given test pulse power. When trial power supply cannot be performed, a calculation and estimation method based on the transformer area topology and conductor parameters can also be used. In subsequent operation, the estimated values ​​are corrected based on occasional emergency power supply results. The recorded line voltage drop or equivalent loss parameters, together with the power supply capacity parameters of the energy partner, form the basis for determining the pulse power supply duration and trigger threshold during subsequent emergency triggering. For example, when the path loss is large, the power supply duration can be increased or a closer energy partner can be selected; when the path loss is small, the duration can be reduced to save the partner's reserve power. The accessibility of pulse power supply is determined by both the energy source capacity and the transmission path loss. Pre-calibrating the loss parameters can prevent the terminal front-end from failing to power on or from not having enough power-on time to complete the transmission due to insufficient power supply during an emergency. It also avoids unnecessary power consumption of the partner due to excessive power supply. As a result, the emergency power supply configuration is more accurate, the power supply success rate is improved, and energy waste is reduced. It can be quantitatively verified by comparing indicators such as the terminal power-on success rate before and after calibration, the redundancy of the single power supply duration, the partner's power consumption, and the emergency frame delivery rate.

[0044] In some examples, it also includes: When the emergency communication terminal is detected to be in a low-power state due to power outage or low-voltage collapse and the high-speed wireless radio frequency communication channel meets the minimum available communication conditions, the concentrator or edge gateway sends a pulse power supply command to the emergency energy substitute through the high-speed wireless radio frequency communication channel. The pulse power supply command includes the power supply duration, the synchronization time window for the start of power supply, and the target emergency communication terminal identifier. The emergency communication terminal starts the high-speed power line carrier communication front-end and sends an extremely short emergency frame within the synchronization time window. The extremely short emergency frame includes one or more of the following: topology change information, fault phase sequence information, and last valid reading. After transmission is completed, the high-speed power line carrier communication front-end is shut down to reduce energy consumption.

[0045] For example, the emergency communication terminal, concentrator, or edge gateway continuously acquires the power supply and communication status of the target branch. When it is detected that the port voltage of the emergency communication terminal is lower than the preset low voltage threshold, the terminal's DC power supply bus enters the undervoltage operating range, the terminal's power management module generates an undervoltage alarm, or the target branch experiences a power outage that prevents the emergency communication terminal from maintaining the normal operation of the high-speed power line carrier communication front-end, it can be determined that the emergency communication terminal has entered a low-power state. Here, it is not required that all functions of the terminal be completely powered off, but rather the focus is on determining whether the remaining power supply conditions are insufficient to support the high-speed power line carrier communication front-end to complete a normal signal modulation, power amplification, and carrier transmission. For example, the terminal's main controller can still be maintained for a short time by the energy storage capacitor or backup power supply, but the high-speed power line carrier communication power amplification section can no longer start. At this time, it can also be determined as the low-power state referred to in this solution. After confirming the low-power state, pulse power supply is not immediately executed. Instead, the high-speed wireless radio frequency communication channel is further checked to see if it meets the minimum available communication conditions. For example, the concentrator or edge gateway can determine whether at least one pulse power supply control command can be reliably transmitted based on the reception status of several recent wireless heartbeat messages, received signal strength, signal-to-noise ratio, number of consecutive packet losses, and confirmation status of short control messages. The reason for this setting is that this scheme does not rely on the wireless channel to directly undertake all emergency data transmission, but only uses the still working wireless channel to deliver energy control commands. Therefore, wireless communication only needs to meet the minimum available conditions required for short control messages and is not required to stably carry complete emergency data. After both of the above conditions are met, the concentrator or edge gateway selects the emergency energy substitute corresponding to the target emergency communication terminal from the pre-established emergency energy substitute association information, and sends a pulse power supply command through the high-speed wireless radio frequency communication channel. The power supply duration can be determined based on the time required for the target terminal's high-speed power line carrier communication front end to complete power-on initialization, carrier synchronization, and one emergency frame transmission. The synchronization time window is used to limit the allowable time range for the emergency energy substitute to actually start outputting pulse energy. The target emergency communication terminal identifier is used to avoid confusion of the power supply target when there are multiple low-power terminals in the same area. For example, if the voltage of a branch where a smart circuit breaker is located drops rapidly from the normal state to a level that is insufficient to maintain the operation of the carrier power amplifier, but the HRF can still intermittently transmit control messages of tens of bytes, the concentrator can send a pulse power supply command with a power supply duration of more than one hundred milliseconds to the energy storage device or controllable power electronic device pre-associated with the circuit breaker instead of trying to continuously upload complete fault data through the wireless link whose quality has obviously deteriorated.Essentially, it combines the limited controllability of the communication link with the available short-term energy resources on the power line. It uses low-information-volume wireless control messages to schedule higher-value short-term physical energy resources, thus avoiding the need for traditional solutions to repeatedly increase the number of wireless retransmissions or wait for the line to recover naturally when the terminal is already out of power. As a result, emergency power supply is only activated when there is a genuine need for power supply and the power supply control command can still reach, reducing the number of invalid pulse power supply, reducing the consumption of backup energy substitutes for emergency energy, and shortening the time between the occurrence of low power state and the temporary restoration of carrier communication capability. It can be evaluated by the pulse power supply trigger success rate, low power state false trigger rate, wireless control command delivery rate, and the average time from low power state determination to power supply initiation.

[0046] For example, after receiving a pulse power supply command and verifying its validity, target terminal identification, and current power supply capability, the emergency energy substitute does not immediately output energy to the target branch at any time. Instead, based on the synchronization time window carried in the pulse power supply command, it initiates a pulse power supply of limited duration within the synchronization time window, causing the voltage on the emergency communication terminal side or the available voltage of the local energy storage unit to rise to above the start threshold of the high-speed power line carrier communication front-end for a short period of time. The emergency communication terminal can determine that the pulse power supply has taken effect by detecting that the terminal side voltage has reached the start threshold, detecting that the energy storage capacitor voltage has reached a preset value, or detecting a specially set power supply arrival signal. Subsequently, it prioritizes the activation of the circuits necessary to complete this emergency communication, rather than restoring all normal functions of the entire terminal. For example, it can prioritize the activation of the clock module, carrier baseband processing module, coupling interface, and power amplification module, and temporarily suspend non-essential functions such as display, human-machine interaction, and complete log writing to shorten the time required from pulse power supply to the availability of packet transmission conditions. After the high-speed power line carrier communication front-end is activated, the terminal sends an extremely short emergency response according to the pre-set emergency frame format. The emergency frame, or extremely short emergency frame, does not aim to include all the data collected during normal operation. Instead, it prioritizes carrying one or more of the following based on the value of fault handling: topology change information, fault phase sequence information, and the last valid reading. For example, topology change information can indicate changes in the open / closed state of the smart switch before and after a power outage, changes in the connectivity between the target branch and the upstream branch, or whether the reclosing action was successful. Fault phase sequence information can indicate which phase the fault mainly occurred in, whether there was a zero-sequence anomaly, and the order in which the anomalies occurred in each phase. The last valid reading can be the voltage, current, active power, reactive power, or cumulative energy data within the last complete sampling window before the power outage, and can also carry the corresponding sampling time identifier. For situations where the pulse power supply duration is particularly limited, the above fields can be sent in a specific order according to the fault handling priority. For example, topology change information that can determine the power outage range can be sent first, followed by fault phase sequence information, and the last valid reading can be sent only when there is still available power supply time. This avoids the most important information from being sent before the power supply ends due to excessively long single-frame data. The synchronization time window plays an important role here. It not only matches the start time of the emergency energy substitute's power supply with the wake-up preparation state of the emergency communication terminal, but also selects a more suitable carrier transmission period based on the current power grid noise phase distribution. For example, when the pulse noise is relatively low in certain power frequency phase intervals, the pulse power supply start position is arranged to cover the low noise interval, so that the limited power supply time falls as close as possible to the time period with a higher probability of successful carrier transmission.By concentrating limited pulse energy into a single high-value, short-duration information transmission action, and reducing pending functions and compressing the scale of emergency information, the energy that would otherwise be insufficient to maintain the normal continuous operation of the terminal can support an effective carrier communication. Therefore, this not only involves temporarily restoring communication to the terminal, but also increasing the amount of effective information per unit of energy supplied, reducing the probability of half-frame failures due to insufficient power supply time, and leveraging the local line coverage advantage of the high-speed power line carrier communication channel to transmit the most valuable information for fault diagnosis back to the concentrator at the moment of the incident. For example, after a fault occurs in a three-phase branch and causes the smart circuit breaker to trip, the terminal's normal carrier communication has stopped. By restoring carrier transmission capability for only about 100 milliseconds through pulse power supply, information such as the circuit breaker changing from closed to open, the abnormal surge in phase B current before the power outage, and the last effective voltage sampling value can be sent to the concentrator. This allows the master station to preliminarily determine the location of the fault and the faulty phase before normal power supply is restored. This effect can be verified by the success rate of carrier front-end startup after terminal pulse power supply, the proportion of effective emergency frames completed within a unit power supply duration, the complete delivery rate of important fields, and the initial transmission success rate of emergency frames.

[0047] For example, after completing the transmission of an extremely short emergency frame, the emergency communication terminal immediately shuts down the high-speed power line carrier communication front-end based on the transmission completion flag, the reception confirmation returned by the concentrator, or the preset maximum emergency transmission time limit. The shutdown process includes at least stopping the continuous operation of the carrier baseband, shutting down the power amplifier circuit, stopping unnecessary line coupling drives, and restoring the emergency communication terminal to a low-power standby state or a low-power protection state. If a valid confirmation has been received from the concentrator within the power supply duration, the carrier transmission can be terminated directly without occupying the remaining power supply time. If no confirmation has been received but the reserved energy still meets the minimum conditions required for a short retransmission, a limited retransmission can be performed according to the preset number of times. After reaching the maximum number of retransmissions or when the remaining power supply is insufficient, the carrier communication front-end is shut down to avoid the rapid depletion of the emergency energy substitute's energy due to infinite retransmissions. In practice, emergency communication terminals can also save the sequence identifier and transmission result of the current emergency frame before shutting down the front end. This allows the terminal to determine which information has been successfully uploaded after power is restored, thus avoiding the indiscriminate retransmission of the same emergency information after normal communication is restored. For example, if a terminal receives a pulse power supply of 150 milliseconds, completes the carrier front end startup and successfully sends an extremely short emergency frame in about 70 milliseconds, and receives confirmation from the concentrator in about 90 milliseconds, it does not continue to use the remaining 60 milliseconds to maintain the operation of the carrier power amplifier. Instead, it immediately shuts down the carrier front end so that the remaining pulse energy is no longer consumed by the communication module. The pulsed power supply in this scheme is a limited emergency resource. Its goal is not to restore normal continuous communication, but to complete a critical data report with a clear termination condition. Therefore, continuing to maintain a high-power carrier front-end after achieving the communication objective will not increase the effective technical benefits, but will instead reduce the ability of the same emergency energy substitute to subsequently support other terminals or respond to the same terminal again. This significantly reduces the energy consumption required for a single emergency communication, reduces the heat load and remaining power drop caused by continuous output of power electronic devices, and enables limited emergency energy to serve more terminals or more fault events. It also reduces the risk of repeated restarts of terminals due to voltage drops in low-power states. This can be evaluated by indicators such as the average power supply time of a single successful emergency report, the proportion of effective working time of the carrier front-end to the total pulsed power supply time, the number of emergency reports that can be supported under the same energy budget, and the remaining power supply capacity of the emergency energy substitute.

[0048] In some examples, it also includes: Establish a pulse energy ledger to record the trigger time, duration, corresponding emergency energy substitute identifier, and energy supply result of each pulse energy supply; Based on the energy ledger, an upper limit is set on the pulse energy supply budget for a single day or a single event to limit the backup power consumption of the emergency energy substitute; After the low-voltage state is lifted, the normal power supply path is restored, and the delivery rate and retransmission count of the extremely short emergency frame are counted for adaptive adjustment of subsequent pulse power supply command parameters.

[0049] Understandably, the above scheme, within a timescale of tens to hundreds of milliseconds, uses power electronic devices within the distribution area that still possess controllable output capabilities as emergency energy substitutes. It provides a one-time power boost to the communication terminal via controlled short pulses, allowing the terminal to transmit only a very short emergency frame before immediately shutting down the communication front-end. This approach leverages two real-world foundations: first, power electronic devices such as micro-inverters, energy storage battery management systems, or smart switches often possess rapid response and short-term power supply capabilities; second, critical information frames typically have very small data volumes, and as long as the communication front-end is powered on and receives a basic stable voltage, transmission can be completed in a very short time. Thus, the scheme uses the instantaneous accessibility of physical energy to compensate for the unavailability of low-electrical-state communication links, transforming emergency communication from continuous service to timely delivery.

[0050] For example, during the operational preparation phase of system commissioning or periodic maintenance, the concentrator or edge gateway registers power electronic devices with controllable short-term output capabilities within the same distribution area, forming an emergency energy substitute list. This list includes at least the device identifier, energy supply capability parameters, and current availability criteria. The suggested energy supply capability parameters include the maximum sustainable pulse power supply duration, allowable peak current or peak power, allowable number of triggers, minimum interval between two triggers, required local state conditions for triggering, and trigger priority. Subsequently, the concentrator establishes associations with one or more candidate energy partners for each emergency communication terminal, and... The power supply path from the terminal to the partner is calibrated. The calibration method can combine low duty cycle trial power supply with terminal readback measurement. That is, without affecting power quality, the energy partner outputs a test pulse with limited amplitude and duration. The terminal records its terminal voltage rise, the front-end power-on success flag, and the duration of the pulse, and reports this to the concentrator. The concentrator estimates the line voltage drop based on the line topology, conductor length, and current load status, thereby calculating the equivalent power supply path loss parameters. When on-site conditions do not allow for trial power supply, initial values ​​can be calculated using topology parameters, and then gradually corrected based on successful and failed samples in subsequent real emergency power supply events. Whether pulse power supply can light up the terminal depends on the matching of energy source capacity and path loss. Establishing a list and calibrating losses in advance allows for rapid selection of a suitable partner and power supply duration without temporary detection during emergency triggering. This reduces power supply decision delays, lowers the power supply failure rate caused by selecting the wrong partner, and reduces the waste of reserve power due to over-power supply.

[0051] For example, the emergency communication terminal continuously monitors its power supply status locally and determines whether it has entered a low-power state. A low-power state can be determined by conditions such as the DC bus voltage falling below a threshold, the duration of a power supply drop exceeding a threshold, or the power management chip entering an undervoltage lockout state. The concentrator side can also use area voltage sampling and terminal heartbeat loss data for auxiliary determination. Simultaneously, the system also needs to determine whether the high-speed wireless radio frequency communication channel meets the minimum available communication conditions. These minimum available communication conditions can be defined by the received signal strength or link quality indicator reaching a lower limit, or the short-time packet switching success rate reaching a lower limit. This is because power supply commands need to be sent to energy partner devices via the wireless channel. If the wireless channel is completely unavailable, it is necessary to switch to a preset local triggering strategy or delay triggering. Power supply triggering is a high-value but scarce action and must be triggered only when there is a confirmed low-power state and the command is reachable, avoiding unnecessary power consumption of the partner. Therefore, the triggering action is more precise, the number of power supply actions per emergency event is reduced, and the critical frame delivery rate is not sacrificed.

[0052] For example, when the low-power state and minimum wireless channel availability conditions are met, the concentrator or edge gateway sends a pulse power supply command to the associated emergency energy substitute through a high-speed wireless radio frequency communication channel. The command includes at least the target emergency communication terminal identifier, the power supply duration, and the synchronization time window for the start of power supply. Optionally, it can also carry the power supply amplitude level, priority, and retry strategy. The synchronization time window is set to solve the problem of mismatch between the power supply start time and the terminal wake-up time. The concentrator can specify an allowed starting window interval in the command and provide a unified time base using a broadcast reference time scale or an existing network synchronization mechanism, so that the energy partner and the terminal are aligned on the same time base. If the system already has power frequency phase reference capability, the synchronization time window can also be designed to avoid high-noise phase segments to improve the success probability of subsequent carrier front-end transmission. This ensures that power supply occurs within the window where the terminal can start the carrier front-end and transmit in time, avoiding premature power supply termination or misalignment between power supply and terminal start-up causing lighting failure. This improves the power-on success rate for the same power supply duration and reduces the power supply redundancy time forced to compensate for misalignment.

[0053] For example, after receiving the synchronization time window parameters, the emergency communication terminal enters a wake-up state. When a power supply pulse is detected and its DC bus voltage reaches the start-up threshold, the terminal immediately starts the high-speed power line carrier communication front-end and enters a rapid transmission process. The transmitted extremely short emergency frames should be designed as short-length and high-information-density data units, containing at least one or more of the following: topology change information, fault phase sequence information, and last valid reading. The topology change information can be specifically represented as a change in switch position, a change in branch power supply path, or a topology hash summary of the transformer area. The fault phase sequence information can be represented as the judgment result and confidence level of phase A, phase B, phase C, or zero sequence anomaly. The last valid reading can be represented as the most recent valid metering value and timestamp before the power outage. To ensure successful transmission under limited power supply time, the terminal can use more conservative carrier modulation parameters and a shorter transmission queue, and prioritize the transmission of frame headers and necessary fields, avoiding carrying unnecessary logs or large waveforms. Emergency information takes precedence over complete information, using the minimum amount of data to obtain the maximum decision-making value. It also utilizes the local access characteristics of carrier communication to deliver information to the concentrator without relying on base stations. Even during power outages or low-voltage collapses, it can still complete the reporting of critical statuses, enabling the main station to obtain first-hand information that can be used for analysis and dispatch.

[0054] For example, after transmitting a very short emergency frame, the terminal immediately shuts down the high-speed power line carrier communication front-end and enters a low-power standby state to reduce the duration required for the power supply pulse and minimize power consumption by the energy partner. The concentrator or edge gateway simultaneously records the results of this power supply and transmission, including the power supply start time, duration, selected energy partner identifier, whether the terminal power-on was successful, whether the emergency frame was received and acknowledged, and the failure reason code if it failed. Power resources should be prioritized for completing a single necessary action; once the critical frame has been transmitted, continuing front-end operation will only consume energy and increase the burden on the partner. With the same partner power budget, more emergency reports can be supported, and the risk of premature depletion of partner backup power due to excessive power supply is reduced.

[0055] For example, the system establishes a pulse power supply energy ledger, recording the trigger time, duration, energy partner identifier, target terminal identifier, power supply result, emergency frame delivery status, and necessary link status summary for each pulse power supply action. Based on the energy ledger, it sets a daily or single-event power supply budget cap, such as limiting the total allowed pulse power supply duration or trigger count for the same energy partner within a day. When the cap is reached, non-critical triggers are rejected or a backup partner is used. After the low-power state is cleared, the concentrator statistically analyzes the delivery rate, retransmission count, and average power supply duration required for success of extremely short emergency frames. Combining this with power supply path loss parameters and partner status, it adjusts subsequent power supply command parameters. For example, if consecutive samples of successful lighting but failed transmission occur on a certain path, the power supply duration is appropriately extended or the synchronization time window is adjusted; if a partner's power decreases, its priority is reduced and a more economical partner is selected. This elevates pulse power supply from a one-off action to a manageable resource, enabling the system to maintain sustainability under multiple emergency events, while statistical results are used to adjust parameters to improve subsequent success rates. Without increasing the overall energy budget, the success rate of reporting can be gradually improved and the number of failed retries can be reduced. This can be quantitatively verified by the average power supply duration of successful reports per unit in the energy ledger, the failure rate of power supply triggering, and the power reduction curve of emergency energy substitutes.

[0056] In some cases, considering that metal cabinets and cable trays form a usable leakage waveguide secondary path in low-voltage power distribution scenarios, their equivalent electromagnetic characteristics are slowly affected by factors such as temperature and humidity, cabinet door status, busbar position fine-tuning, and cable bundle shape changes. This manifests as long-term, slowly varying drift in group delay, envelope stability, and frequency response microstructure. One-time modeling is effective in the initial stage of operation, but may become mismatched after several weeks to months, causing the selected operating frequency and phase reference window to no longer be in the optimal range. By injecting low-power probe pulses during periods of low business load, pattern fingerprints that characterize subtle changes in the secondary path are extracted and time series are constructed. Then, aligned and analyzed with maintenance logs and seasonal variables, reversible drift and structural transitions can be distinguished. This allows for slight automatic correction of the frequency and phase window, maintaining the long-term availability and stability of the secondary path. Based on this, some examples also include: during periods of low service load, the terminal sends low-power probe pulses via a high-speed power line carrier communication channel and extracts the pattern fingerprint features of the leaky waveguide sub-path at the concentrator side. The pattern fingerprint features include at least one or more of group delay quantile difference and envelope stability. Based on the pattern fingerprint, a time series is constructed and aligned with maintenance logs and seasonal environmental variables. When it is determined that the gradual drift amplitude of the pattern fingerprint exceeds a threshold, the operating frequency and phase reference window parameters are automatically slightly corrected and the sub-path parameter set is updated to maintain the availability and stability of the sub-path during long-term operation.

[0057] For example, the concentrator issues probe commands during periods of low service load, and the terminal sends a low-power, narrow-duty-hour probe pulse sequence via the HPLC channel. The pulse bandwidth and repetition period selection should not affect on-network services; the power limit complies with local electromagnetic compatibility standards, and a superimposed threshold avoids triggering protection. The concentrator synchronizes and denoises the recovered waveform, extracting features such as group delay quantile difference and envelope stability (e.g., the reciprocal of the amplitude variance within the sliding window). To eliminate the short-term impact of occasional maintenance and momentary manual operations, robust filtering and outlier suppression are applied to the feature sequence, and an environmental snapshot is taken for each probe, which may include temperature and humidity, door opening / closing, and operating shift. A time series model is established for the features, separating seasonality (periodic), trend, and abrupt changes; time alignment is performed with maintenance logs such as busbar tightening, instrument replacement, and cabinet door adjustment to assess the contribution of temperature and humidity-driven reversible drift and structural transitions caused by hardware changes to the features. When the amplitude or slope of the gradual drift exceeds a threshold, a micro-correction is triggered: a finite-step upward / downward offset search is performed on the operating frequency, a small-step sliding of the phase reference window position is performed, and new parameters are determined through a short-test-to-evaluation-to-parameter update process. The update frequency is controlled to ensure no perceptible impact on on-network services. A version number and effective time are generated for each correction; if the packet error rate, retransmission rate, or first packet delay quantile deteriorates after correction, it automatically reverts to the previous version and reports the anomaly for manual review. Furthermore, the availability of secondary paths remains high even after seasonal changes and minor hardware adjustments. No repeated on-site retesting is required; model accuracy is maintained solely through low-power probing. The data includes the packet error rate difference after operating frequency changes, the first packet delay P95 difference, the number of parameter updates per quarter, the rollback rate after updates, and the corresponding hit rate with maintenance events. In some cases, considering that redundancy is adjusted based on the packet loss rate of a single channel, the implicit assumption is that errors in the two channels are independent. However, within a power distribution room, strong interference sources, construction welding, and switching events can simultaneously affect both radio and power line carriers, causing a correlation between arrival events of the two channels. In this situation, simple duplication or average distribution will expose redundancy to the gaps in co-directional erasure. By statistically analyzing the arrival indication sequences of the two channels within an emergency window, estimating mutual information and conditional arrival probabilities, the strength of error correlation can be obtained. Under the premise of satisfying the target decoding success probability constraint, optimizing the cross-channel distribution and transmission order of information / redundancy segments minimizes the risk of co-directional erasure. Based on this, some examples also include: statistically analyzing the segment arrival indication sequences of the high-speed power line carrier communication channel and the high-speed radio frequency communication channel respectively within the emergency transmission window, estimating the mutual information and conditional arrival probability of the arrival indications of the two channels, and calculating the cross-channel sharing ratio and transmission order strategy of the information segment and the error correction redundancy segment under the constraint of satisfying the target decoding success probability threshold, so as to minimize the risk of same-direction erasure; wherein, the first batch of key segments is prioritized for channels that are assessed as having low correlation, and the sharing ratio and transmission order strategy are dynamically adjusted when the correlation increases or the constraint mismatch occurs.

[0058] For example, short-window arrival indication sequences (success = 1, failure = 0) are maintained for each of the two channels, with the window length chosen to balance statistical stability and time-varying response. Based on the arrival sequence, the joint distribution, marginal distribution, and conditional arrival probability are estimated, and an unbiased or upper bound estimation method is used to provide a robust estimate of mutual information and generate a correlation level. A constraint set is formed by the reliability target, latency constraints, and energy consumption budget of the current service, defining the feasible region for redundancy and allocation ratio. Within the feasible region, the allocation scheme with the minimum mutual information penalty is selected; if the correlation is low, the first batch of critical segments is sent to a more independent channel, and the transmission time slots of the two channels are staggered to reduce the probability of same-direction erasure; if the correlation increases, redundancy is moderately concentrated in the current stronger channel, and the other channel is used to supplement non-critical segments to throttle performance. When an increase in decoding failure density is observed that does not match the prediction, redundancy is increased or the order is adjusted; at the same time, upper and lower bounds are applied to avoid frequent swings under short-term jitter. Thus, in correlated noise scenarios, the target success rate is maintained while reducing the total amount of redundancy and the number of transmissions. Same-direction erasure is avoided, reducing the long tail of segments that cannot receive sufficient data. Average number of segments successfully recovered per unit, estimated probability of erasure in the same direction, decoding success rate, and frequency and magnitude of changes to the cost-sharing scheme.

[0059] In some cases, distributed inverters can generate comb-shaped harmonic spectra under specific load and control conditions. The conventional strategy is to avoid the entire frequency band, but the actual spectrum often contains repeatable energy valleys. If, without changing the primary carrier configuration, a fine-grained subcarrier offset is applied to short frames to make them fall into a momentary low-noise valley, the decision level of the short frame can be significantly improved without increasing power. Simultaneously, by monitoring valley energy and neighboring occupancy online, stability can be ensured by backing back to the default position or switching to an alternative valley when necessary. Based on this, some examples also include: online estimation of the harmonic spectrum caused by distributed inverters within the distribution area and detection of energy valley frequency slots; applying a fine-grained subcarrier offset to the short frame to be transmitted to make it fall into the energy valley frequency slot without changing the primary carrier configuration; monitoring neighboring service occupancy and interference increases during transmission; and when the noise energy of the energy valley frequency slot exceeds a threshold or a conflict occurs, backing back to the default subcarrier position or switching to the next alternative frequency slot to improve the reachability of short frames in inverter interference scenarios.

[0060] For example, the concentrator or terminal samples the noise spectrum in low duty cycle monitoring slots, extracts comb peak / valley features, uses robust extremum detection and minimum spacing constraints to mark available valley slots, and provides a confidence score. Under the constraint of unchanged primary carrier parameters, an offset table, such as offset step and available slot index, is generated for short frames to ensure that coupling and regulatory constraints are still met after offsetting. Priority mapping is established for different short frame types, such as alarms, acknowledgments, and summaries. During transmission, the occupancy of adjacent services and valley energy changes are monitored. Once noise energy exceeds a threshold or an occupancy conflict occurs, the system immediately reverts to the default subcarrier position or switches to the next alternative valley, recording the triggering reason for subsequent statistics and table updates. The offset table is updated periodically or under trigger conditions, eliminating valley positions with long-term poor performance, and relearning spectral shifts caused by seasonal load changes. Updates are implemented gradually to avoid uncertainties caused by sudden large-scale changes. Thus, in inverter-interference scenarios, a higher short frame arrival rate can be achieved without increasing transmit power. The primary carrier configuration remains unchanged, maintaining system consistency and compliance. Packet error rate difference between valley offset and default position, short frame signal-to-noise ratio gain estimation, collision trigger rate, backoff frequency and success recovery rate.

[0061] The dual-mode power grid emergency communication management method in the embodiments of this application has been described above. The dual-mode power grid emergency communication management system in the embodiments of this application is described below.

[0062] Please see Figure 2 This application describes an embodiment of a dual-mode power grid emergency communication management system, which may include: Encoding unit 201 is used to encode the emergency business data into cross-media fragmented data containing information fragments and error correction redundancy fragments based on the reliability target and time delay constraint corresponding to the semantic category of the emergency business data when the emergency event triggering conditions are met. The information fragments and the error correction redundancy fragments satisfy an error correction coding relationship that can be executed for merged decoding. The generation unit 202 is used to generate a cross-medium fragment index for the cross-medium fragmented data. The cross-medium fragment index includes at least a unified sequence number field and a fragment type identifier, so that information fragments transmitted via the high-speed power line carrier communication channel and error-correcting redundant fragments transmitted via the high-speed wireless radio frequency communication channel can be aggregated at the receiving side according to a unified sequence number. The determining unit 203 is used to determine the sharing ratio of the information segment and the error correction redundancy segment between the two channels based on the real-time link status of the high-speed power line carrier communication channel and the high-speed wireless radio frequency communication channel during emergency communication, and to send them through the corresponding channels respectively.

[0063] above Figure 2The dual-mode power grid emergency communication management system in this application embodiment has been described from the perspective of modular functional entities. The following is a detailed description of the dual-mode power grid emergency communication management system in this application embodiment from the perspective of hardware processing. Please refer to... Figure 3 One embodiment of the dual-mode power grid emergency communication management system 300 in this application includes: The system includes an input device 301, an output device 302, a processor 303, and a memory 304, wherein the number of processors 303 can be one or more. Figure 3 Taking a processor 303 as an example. In some embodiments of this application, the input device 301, output device 302, processor 303, and memory 304 can be connected via a bus or other means, wherein... Figure 3 Taking the example of a connection between China and Israel via a bus.

[0064] Specifically, by calling the operation instructions stored in memory 304, processor 303 executes the following steps: In wireless communication environments, including metal cabinets and / or cable trays in power distribution rooms, the terminal transmits probe pulses at multiple candidate frequency points based on a high-speed wireless radio frequency communication channel. Collect the echo and energy dissipation measurements corresponding to the detection pulse, construct a waveguide-like determination model, and record the characteristic parameters of the leaking waveguide; Based on the leakage waveguide characteristic parameters, an operating frequency point is selected to form a stable secondary path, so as to transmit key small packet information through the cabinet and / or cable tray type waveguide secondary paths that are available at the operating frequency point.

[0065] By calling the operation instructions stored in memory 304, processor 303 is also used to execute... Figure 1 Any of the methods in the corresponding embodiments.

[0066] Please see Figure 4 , Figure 4 A schematic diagram illustrating an embodiment of the electronic device provided in this application.

[0067] like Figure 4 As shown, this application embodiment provides an electronic device 400, including a memory 304, a processor 303, and a computer program 411 stored in the memory 304 and executable on the processor 303. When the processor 303 executes the computer program 411, it performs the following steps: In wireless communication environments, including metal cabinets and / or cable trays in power distribution rooms, the terminal transmits probe pulses at multiple candidate frequency points based on a high-speed wireless radio frequency communication channel. Collect the echo and energy dissipation measurements corresponding to the detection pulse, construct a waveguide-like determination model, and record the characteristic parameters of the leaking waveguide; Based on the leakage waveguide characteristic parameters, an operating frequency point is selected to form a stable secondary path, so as to transmit key small packet information through the cabinet and / or cable tray type waveguide secondary paths that are available at the operating frequency point.

[0068] In practical implementation, when processor 303 executes computer program 411, it can achieve... Figure 1 Any of the corresponding implementation methods in the embodiments.

[0069] Since the electronic device described in this embodiment is the device used to implement a dual-mode power grid emergency communication management system in this application embodiment, those skilled in the art can understand the specific implementation method and various variations of the electronic device in this embodiment based on the method described in this application embodiment. Therefore, how the electronic device implements the method in this application embodiment will not be described in detail here. Any device used by those skilled in the art to implement the method in this application embodiment is within the scope of protection of this application.

[0070] Please see Figure 5 , Figure 5 This is a schematic diagram illustrating an embodiment of a computer-readable storage medium provided in this application.

[0071] like Figure 5 As shown, this embodiment provides a computer-readable storage medium 500 on which a computer program 411 is stored. When the computer program 411 is executed by a processor, it performs the following steps: In wireless communication environments, including metal cabinets and / or cable trays in power distribution rooms, the terminal transmits probe pulses at multiple candidate frequency points based on a high-speed wireless radio frequency communication channel. Collect the echo and energy dissipation measurements corresponding to the detection pulse, construct a waveguide-like determination model, and record the characteristic parameters of the leaking waveguide; Based on the leakage waveguide characteristic parameters, an operating frequency point is selected to form a stable secondary path, so as to transmit key small packet information through the cabinet and / or cable tray type waveguide secondary paths that are available at the operating frequency point.

[0072] By calling the operation instructions stored in memory 304, processor 303 is also used to execute... Figure 1 Any of the methods in the corresponding embodiments.

[0073] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A dual-mode power grid emergency communication management method, characterized in that, include: When the emergency event triggering conditions are met, based on the reliability target and latency constraints corresponding to the semantic category of the emergency business data, the emergency business data is encoded into cross-media fragmented data containing information fragments and error correction redundancy fragments, wherein the information fragments and the error correction redundancy fragments satisfy an error correction coding relationship that can be executed for merged decoding. A cross-media fragment index is generated for the cross-media fragmented data. The cross-media fragment index includes at least a unified sequence number field and a fragment type identifier, so that information fragments transmitted via the high-speed power line carrier communication channel and error-correcting redundant fragments transmitted via the high-speed radio frequency communication channel can be aggregated at the receiving side according to a unified sequence number. During emergency communication, the information segment and the error correction redundancy segment are distributed between the two channels according to the real-time link status of the high-speed power line carrier communication channel and the high-speed wireless radio frequency communication channel, and are then transmitted through the corresponding channels respectively. Also includes: During the operational preparation phase, an emergency energy substitute list is established for at least one emergency communication terminal. The emergency energy substitute list includes the equipment identification and energy supply capacity parameters of at least one controllable power electronic device among micro inverters, energy storage battery management systems, or smart switches located in the same transformer area. Record the line voltage drop or equivalent power supply path loss parameters between the emergency communication terminal and the corresponding emergency energy substitute for use in pulse power supply triggering and duration configuration under low power conditions.

2. The method according to claim 1, characterized in that, Also includes: At the concentrator or edge gateway side, the fragments from the two channels are sequenced and aggregated based on the cross-media fragment index, and the aggregated fragments are merged and decoded to recover the emergency service data.

3. The method according to claim 1, characterized in that, The step of determining the sharing ratio of the information segment and the error correction redundancy segment between the two channels based on the real-time link status of the high-speed power line carrier communication channel and the high-speed radio frequency communication channel includes: Using one or more of the following as independent variables—link packet loss rate, latency jitter, available throughput, and energy consumption budget—the code rate-redundancy mapping relationship corresponding to the semantic category is queried or calculated to obtain the redundancy of the error correction redundancy segment and the amortization ratio. The mapping relationship is then adjusted online when the change of the independent variable exceeds a threshold.

4. The method according to claim 1, characterized in that, The cross-media fragment index also includes fragment lifetime and window identifier, and the method further includes: The concentrator or edge gateway performs sequence number aggregation only on fragments with the same window identifier within the said lifetime limit, and discards or downgrades fragments that have not been aggregated when the lifetime limit is exceeded, in order to limit buffer usage and processing latency during emergency communication. When the emergency service data is at least one of metering certificate, remote signaling alarm or remote control confirmation, the high-speed wireless radio frequency communication channel prioritizes sending error correction redundancy segments and service header information, and the high-speed power line carrier communication channel subsequently sends the data body of the information segment, so that the receiving side can establish an aggregation context in advance and shorten the retransmission waiting time after receiving the error correction redundancy segments and service header information.

5. The method according to claim 1, characterized in that, Also includes: When the emergency communication terminal is detected to be in a low-power state due to power outage or low-voltage collapse and the high-speed wireless radio frequency communication channel meets the minimum available communication conditions, the concentrator or edge gateway sends a pulse power supply command to the emergency energy substitute through the high-speed wireless radio frequency communication channel. The pulse power supply command includes the power supply duration, the synchronization time window for the start of power supply, and the target emergency communication terminal identifier. The emergency communication terminal starts the high-speed power line carrier communication front-end and sends an extremely short emergency frame within the synchronization time window. The extremely short emergency frame includes one or more of the following: topology change information, fault phase sequence information, and last valid reading. After transmission is completed, the high-speed power line carrier communication front-end is shut down to reduce energy consumption.

6. The method according to claim 5, characterized in that, Also includes: Establish a pulse energy ledger to record the trigger time, duration, corresponding emergency energy substitute identifier, and energy supply result of each pulse energy supply; Based on the energy ledger, an upper limit is set on the pulse energy supply budget for a single day or a single event to limit the backup power consumption of the emergency energy substitute; After the low-voltage state is lifted, the normal power supply path is restored, and the delivery rate and retransmission count of the extremely short emergency frame are counted for adaptive adjustment of subsequent pulse power supply command parameters.

7. A dual-mode power grid emergency communication management system, characterized in that, include: The encoding unit is used to encode the emergency business data into cross-media fragmented data containing information fragments and error correction redundancy fragments based on the reliability target and time delay constraint corresponding to the semantic category of the emergency business data when the emergency event triggering conditions are met. The information fragments and the error correction redundancy fragments satisfy an error correction encoding relationship that can be executed for merged decoding. The generation unit is used to generate a cross-medium fragment index for the cross-medium fragmented data. The cross-medium fragment index includes at least a unified sequence number field and a fragment type identifier, so that information fragments transmitted via the high-speed power line carrier communication channel and error-correcting redundant fragments transmitted via the high-speed wireless radio frequency communication channel can be aggregated at the receiving side according to a unified sequence number. The generation unit is also used to establish an emergency energy substitute list for at least one emergency communication terminal during the operation preparation phase. The emergency energy substitute list includes the device identifier and energy supply capacity parameters of at least one controllable power electronic device among micro-inverters, energy storage battery management systems, or smart switches located in the same transformer area; and to record the line voltage drop or equivalent power supply path loss parameters between the emergency communication terminal and the corresponding emergency energy substitute for use in low-power state pulse power supply triggering and duration configuration. The determining unit is used to determine, during emergency communication, the sharing ratio of the information segment and the error correction redundancy segment between the two channels based on the real-time link status of the high-speed power line carrier communication channel and the high-speed wireless radio frequency communication channel, and to transmit them respectively through the corresponding channels.

8. An electronic device, characterized in that, The electronic device includes at least one processor and at least one memory connected to the processor, wherein the processor is used to call program instructions in the memory to execute the dual-mode power grid emergency communication management method as described in any one of claims 1 to 6.

9. A storage medium, characterized in that, The storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the storage medium to perform the dual-mode power grid emergency communication management method as described in any one of claims 1 to 6.

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