Method for studying, judging and verifying power failure and power recovery of terminal

Abstract

The invention relates to the technical field of power failure first-aid repair, in particular to a research, judgment and verification method for power failure and power recovery of a terminal. The method is applied to rush repair of power failure and power recovery of the terminal and comprises the steps of S1, terminal power failure study and judgment; s2, terminal power restoration research and judgment; s3, verifying the power failure of the terminal; and S4, terminal power restoration verification. Through cross validation of the terminal and the electric energy meter, voltage measurement, comprehensive power recovery proportion, system load and the like, misjudgment of single information is avoided, transient power failure and continuous power failure are accurately distinguished, and the overall power failure and power recovery state of the terminal and the system is accurately mastered; de-duplication processing is carried out on a repeatedly reported event, so that information redundancy is avoided; the delay reporting mechanism reduces unnecessary first-aid repair processes; a false alarm power failure event caused by transient abnormal fluctuation is abandoned, resource waste is reduced, and the overall processing efficiency is improved; power failure and power recovery event information is packaged to a database and pushed to an external system, information sharing of all departments is achieved, quick response and efficient processing when a power failure event occurs are ensured, and the operation stability of a power system is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power failure repair, in particular to a terminal power failure and power restoration research and verification method. BACKGROUND

[0002] As the core business of power supply enterprises, power failure repair under the traditional mode, customers, low-voltage transformer area, switching station and other power failures rely on customers to call 95598 for repair telephone, and then the staff go to the scene for repair. Before repair, the specific power failure point and range cannot be known, and the on-site fault point search takes a long time, which greatly reduces the repair efficiency, affects the power supply reliability, and seriously interferes with the normal life and production of customers. Although some power failure event generation and research rules have been developed after the collection system is fully covered, they lack systematicness. There are still some problems, such as: planned power failure reporting events are not excluded, resulting in a large number of abnormal power failure misjudgment and misrepair; no systematic research and judgment rules are formed, power failure range and point are misjudged, and repair opportunity is delayed; no interconnection confirmation is made, planned power failure is misjudged as fault power failure, and single device misreporting causes misjudgment, so that the power failure research and judgment is not accurate, and the event cannot be effectively applied. The existing terminal power failure and power restoration research and verification method also has some shortcomings, such as: the information is redundant when the power failure is researched, the planned power failure is easily misjudged, and the time effectiveness verification is lacking; the power restoration research and verification is not comprehensive and accurate, which affects the power repair and system recovery efficiency. Therefore, a new technical solution is needed to solve the above problems. SUMMARY

[0003] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a terminal power failure and power restoration research and verification method.

[0004] The technical solution adopted by the present application is as follows: A terminal power failure and power restoration research method is applied to terminal power failure and power restoration repair, which includes the following steps: S1, terminal power failure research, the specific steps are as follows: S11, the main station receives the power failure event reported by the terminal; S12, for the power failure events reported by the terminal within 1 hour, the main station only processes the first reported power failure event to avoid repeated processing; S13, the main station judges whether there is a marketing in-transit process for the terminal on the same day, if there is, the terminal power failure event is discarded to prevent misjudgment; S14, the main station verifies the validity of the terminal power failure event occurrence time, if the time is invalid, the power failure event is discarded; S15, the main station measures the terminal interchange A-phase voltage or total meter A-phase voltage, and preliminarily identifies the power failure according to the measurement result: if there is no return value, the voltage value is 0V or the voltage value is between 0V and the judgment threshold, then it is preliminarily identified as power failure; S16, the main station delays 2 minutes to report, and waits for terminal power-on event; S17, for a multi-terminal system, whether there is other associated terminal or power meter power failure event is verified synchronously, and the terminal and the overall power failure state of the system are comprehensively judged; S1, terminal power restoration research and judgment, the specific steps are as follows: S21, the main station marks the power restoration event reported by the substation-level terminal, the type II concentrator and the type I collector of the power failure unit, and effectively judges the power restoration time, if the power restoration time is valid, it is preliminarily judged as power restoration; S22, if the power restoration time is invalid and no other power failure event is reported, the main station measures the terminal A-phase voltage to restore the power research and judgment, and confirms the power restoration if the voltage value is not less than the judgment threshold; S23, the main station comprehensively judges the terminal power restoration event, the voltage measurement result and the associated power meter state, finally confirms the terminal power restoration state, and encapsulates the power restoration event information into the database and pushes it to the external system.

[0005] The technical scheme ensures the timely capture and response of power failure information by taking the power failure event actively reported by the terminal as the starting point of research and judgment by the main station; effectively avoids repeated processing and redundancy of information, and improves the processing efficiency by processing only the first reported power failure event of the terminal within 1 hour; prevents misjudgment caused by planned operation by judging whether there is marketing in-process of the terminal on the same day, and deciding whether to discard the power failure event of the terminal; ensures the authenticity and reliability of the research and judgment data by verifying the validity of the power failure event time of the terminal, and filtering invalid or incorrect time information; provides scientific basis and quantitative index for the judgment of power failure state by measuring the terminal power supply A-phase voltage or total meter A-phase voltage, and preliminarily identifying the power failure according to the measurement result; enhances the flexibility of research and judgment by setting a 2-minute delay reporting mechanism to wait for and observe the occurrence of terminal power-on event, so as to distinguish between temporary power failure and continuous power failure state; for a multi-terminal system, the overall power failure state of the terminal and the system is comprehensively judged by synchronously verifying the power failure events of other associated terminals or power meters, improving the comprehensiveness and systematicness of research and judgment; in the power restoration research and judgment, the power restoration event reported by the substation-level terminal and other devices of the power failure unit is marked, and the power restoration time is effectively judged to preliminarily confirm the power restoration state; the terminal A-phase voltage is measured for power restoration research and judgment in the case that the power restoration time is invalid and no other power failure event is reported; the terminal power restoration state is finally confirmed by comprehensively considering the terminal power restoration event, the voltage measurement result and the associated power meter state, and the power restoration event information is encapsulated into the database and pushed to the external system, realizing effective integration and utilization of information.

[0006] In addition, the power failure and power restoration research and judgment method of the terminal according to the above-mentioned application can have the following additional technical features: According to one embodiment of the present application, in the S11, the master station receives the power failure events actively reported by the terminals, which includes two cases: single-terminal reporting and multi-terminal cooperative reporting. Case 1: For a single terminal, the master station receives the power failure event actively reported by the terminal. Case 2: For a multi-terminal system, the master station receives the power failure events reported by multiple terminals, and performs A-phase voltage data measurement on the terminals that do not report the power failure event, and makes a power failure judgment based on the measurement results.

[0007] The technical solution is based on the interaction mechanism between the terminals and the master station in the power system. The terminals can actively perceive their power failure state and report it. The master station, as the core processing unit, receives the information and makes a judgment. For a multi-terminal system, considering that the states of the terminals may be different, the master station not only receives the reported information, but also actively measures the voltage data of the terminals that do not report the power failure event. By using the key power parameter of voltage and combining the preset rules, the power failure situation is determined, and the power failure states of terminals of different scales are accurately and comprehensively mastered.

[0008] According to one embodiment of the present application, in the S11, for the terminals that do not report the power failure event, the A-phase voltage of the associated energy meter is measured to assist in the judgment. When the rated voltage of the energy meter is 220V, the judgment threshold is 132V; when the rated voltage of the energy meter is 100V, the judgment threshold is 60V; and when the rated voltage of the energy meter is 57.7V, the judgment threshold is 35V.

[0009] In the technical solution, different rated voltages of the energy meter are set to different judgment thresholds, which is based on the reasonable relationship between the rated voltage of the energy meter and the actual working voltage. When the voltage is lower than the corresponding threshold, it means that the circuit where the energy meter is located may have a power failure, and then it is inferred that the associated terminal may have a power failure. Therefore, the A-phase voltage of the associated energy meter of the terminal that does not report the power failure event is measured to assist in the judgment.

[0010] According to one embodiment of the present application, in the S16, the master station pays attention to the power-on event of the same terminal only during the 2-minute reporting period, to avoid interference between different terminal events.

[0011] In the technical solution, if the terminal truly restores power supply within the 2 minutes, a stable power-on signal will be generated; if it is only a temporary fluctuation, there will be no continuous and effective power-on event. In this way, the master station can accurately observe the power-on event of the same terminal within the 2 minutes, distinguish between temporary power failure and true power restoration, avoid unnecessary repair processes due to misjudgment, and improve the accuracy and reliability of the power failure and power restoration judgment.

[0012] According to one embodiment of the present application, in the S16, if the master station receives the power-on event of the same terminal within 2 minutes, the corresponding terminal power failure event is discarded.

[0013] In the technical solution, if the main station receives the power-on event of the same terminal within 2 minutes, it indicates that the terminal is likely to have only experienced a short power supply anomaly, and is not a real power failure. Because if it is a real power failure, the power-on condition usually does not occur within 2 minutes. Therefore, discarding the power failure event of the corresponding terminal can avoid unnecessary repair operations caused by such temporary abnormal fluctuations and reduce resource waste.

[0014] According to one embodiment of the application, in the S17, after comprehensively judging the terminal and the overall power failure state of the system, the main station encapsulates the terminal power failure event information, saves the power failure event information to the database, and pushes it to the external system.

[0015] In the technical solution, the information is pushed to the external system because the operation of the power system involves multiple departments and systems, such as the dispatching system, the operation and maintenance system, the customer service system, etc. Through information pushing, information sharing and collaborative work between departments are realized, and quick response and efficient handling in the event of a power failure are ensured.

[0016] According to one embodiment of the application, in the S1 and S2, the research and judgment method further includes a deduplication rule: if the main station receives a terminal power-on event, a power meter power-on event, a reported power acquisition data or power data within 5 minutes, corresponding deduplication processing is performed to avoid repeated records.

[0017] In the technical solution, repeated recording of these information can cause many drawbacks, such as occupying a large amount of storage space, increasing the database burden, and reducing data query and processing efficiency; it can also interfere with subsequent data analysis, leading to misjudgment of the power failure and power restoration situation.

[0018] To achieve the above-mentioned purpose, the application also provides a verification method for power failure and power restoration of a terminal.

[0019] A verification method for power failure and power restoration of a terminal, through cross verification of the terminal and the power meter, includes the following steps: S3, terminal power failure verification: after the main station receives the power failure event reported by the terminal, the associated power meter A-phase voltage measurement is triggered synchronously, and if the voltage value meets the power failure judgment condition, the power meter power failure is confirmed to be valid; if all associated power meters are powered off, the terminal power failure event is confirmed to be valid; S4, terminal power restoration verification: after the main station receives the power restoration event reported by the terminal, the associated power meter A-phase voltage measurement is triggered synchronously, and if the voltage value is not less than the judgment threshold, the power meter power restoration is confirmed to be valid; if the proportion of power restoration terminals reaches a preset threshold and the system load recovers to a certain proportion before the power failure, the terminal power restoration is confirmed to be valid.

[0020] The technical scheme is realized by close association and data interaction between the terminal and the electric energy meter. In the terminal power-off verification link, after the master station receives the power-off event reported by the terminal, instead of relying on the information alone, the master station initiates A-phase voltage measurement to the associated electric energy meter which does not report the power-off event; considering that the terminal may misreport or not report comprehensively, if the terminal meets the power-off determination condition, the power-off of the electric energy meter is confirmed to be effective; when all the associated electric energy meters are powered off, the authenticity of the terminal power-off event is verified from the side, and then the terminal power-off event is confirmed to be effective, so that the accuracy of power-off determination is ensured in multiple dimensions; in the terminal power-on verification, after the master station receives the power-on event reported by the terminal, the A-phase voltage of the associated electric energy meter is measured, and the power-on of the electric energy meter is confirmed to be effective when the voltage value is not less than the determination threshold; in combination with the proportion of power-on terminals and the system load recovery condition, only when the power-on terminals reach the preset threshold and the system load recovers to a certain proportion before power-off, the power-on of the terminal is confirmed to be effective, and the power-on state is comprehensively considered from the local to the whole.

[0021] According to one embodiment of the present application, in the terminal power-off verification of S3, the following cases are excluded when cross verification of the power-off event of the electric energy meter is performed: the electric energy meter repeatedly reports the power-off event within 1 hour; the power-off event time of the electric energy meter is not the same day or the difference with the current time is more than 1 hour; the communication of the electric energy meter is interrupted but the voltage is normal.

[0022] In the technical scheme, the electric energy meter repeatedly reports the power-off event within 1 hour is excluded because the repeated reporting within a short time is extremely likely to be a misreport caused by a fault of the electric energy meter itself or signal interference, rather than real power-off, and excluding such information can avoid interference with the judgment of the real power-off state. The case that the power-off event time of the electric energy meter is not the same day or the difference with the current time is more than 1 hour is excluded because when the time span is too large, the relevance of the power-off event to the current terminal power-off verification is extremely weak, and the power-off event may have been processed or belongs to other irrelevant situations, and after the exclusion, the verification can focus on the power-off information related to the present. The case that the communication of the electric energy meter is interrupted but the voltage is normal is excluded because the communication interruption does not mean actual power-off, and the normal voltage indicates that the power supply is not affected, and excluding such cases can prevent misjudgment of power-off due to communication problems and ensure that the cross verification result truly reflects the power-off state of the terminal and the electric energy meter.

[0023] According to one embodiment of the present application, in the terminal power-on verification of S4, for the terminal which does not directly report the power-on event, but the associated electric energy meter or smart metering switch has reported the power-on event, the reported time of the electric energy meter or smart metering switch is used as the reference; if the power-on proportion does not reach the threshold or the load is not recovered, it is confirmed that the local power-on is effective, and the state of the remaining terminals needs to be checked; at the same time, the power-on verification is allowed to be performed by the power generation current of the distributed photovoltaic.

[0024] The technical scheme comprehensively correlates the reporting time of the equipment, the power-on ratio, the load condition and the distributed photovoltaic power generation current and the like, realizes accurate and comprehensive terminal power-on verification, and thus more accurately masters the power-on state of the power system.

[0025] Compared with the prior art, the present application has the following beneficial effects: (1) By means of multiple verification modes such as terminal and electric energy meter cross verification, voltage measurement, comprehensive power-on ratio and system load, single information misjudgment is avoided, transient power failure and continuous power failure are accurately distinguished, and the terminal and system overall power-off and power-on state is accurately mastered; (2) The repeated reporting events are de-duplicated to avoid information redundancy, the delay reporting mechanism reduces unnecessary repair processes, the false power-off events caused by short-term abnormal fluctuations are discarded, resource waste is reduced, and the overall processing efficiency is improved; (3) The power-off and power-on event information is packaged into a database and pushed to an external system, information sharing of various departments is realized, fast response and efficient processing are ensured when the power-off event occurs, and the operation stability of the power system is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is one of the flow principle block diagrams of the present application.

[0027] Figure 2 is the second flow principle block diagram of the present application. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] Embodiment 1 As shown in Figure 1 , the present embodiment provides a power-off and power-on judgment method of a terminal, which is applied to the repair of terminal power-off and power-on, and includes the following steps: S1, terminal power-off judgment, the specific steps are as follows: S11, the master station receives the power-off event actively reported by the terminal; S12, for the power-off events reported by the terminal multiple times within 1 hour, the master station only processes the first reported power-off event to avoid repeated processing; S13, the master station judges whether there is a marketing in-transit process for the terminal on the same day, and if so, the terminal power-off event is discarded to prevent misjudgment; S14, the master station verifies the validity of the terminal power failure event occurrence time, and discards the power failure event if the time is invalid; S15, the master station calls the terminal to measure the A-phase voltage or the total meter A-phase voltage, and preliminarily determines the power failure according to the measurement result: if there is no return value, the voltage value is 0V or the voltage value is between 0V and the determination threshold, it is preliminarily determined as power failure; S16, the master station reports after 2 minutes delay, and waits for the terminal power-on event; S17, for a multi-terminal system, it is verified whether there is other associated terminal or power meter power failure event, and the terminal and system overall power failure state is comprehensively judged; S1, terminal power recovery judgment, the specific steps are as follows: S21, the master station marks the power recovery event reported by the terminal, the area-level terminal, the type II concentrator and the type I collector of the power failure unit, and effectively judges the power recovery time, if the power recovery time is valid, it is preliminarily judged as power recovery; S22, if the power recovery time is invalid and no other power failure event is reported, the master station calls the terminal A-phase voltage for power recovery judgment, and confirms the power recovery if the voltage value is not less than the determination threshold; S23, the master station comprehensively judges the terminal power recovery state according to the terminal power recovery event, the voltage measurement result and the associated power meter state, and finally confirms the terminal power recovery state, encapsulates the power recovery event information into the database and pushes it to the external system.

[0030] The technical solution takes the power failure event actively reported by the terminal as the starting point of research and judgment through the main station to ensure the timely capture and response of the power failure information; through the strategy of only processing the first reported power failure event among the multiple reported power failure events within 1 hour of the terminal, the repeated processing and redundancy of information are effectively avoided, and the processing efficiency is improved; through judging whether there is a marketing in-transit process for the terminal on the same day, and deciding whether to discard the power failure event of the terminal according to the judgment result, the misjudgment caused by planned operation is prevented; through verifying the validity of the power failure event occurrence time of the terminal, invalid or incorrect time information is filtered, and the authenticity and reliability of the research and judgment data are ensured; through calling and measuring the A-phase voltage of the terminal or the total meter A-phase voltage, and preliminarily identifying the power failure according to the calling and measuring result, scientific basis and quantitative indicators are provided for the judgment of the power failure state; through setting a 2-minute delayed reporting mechanism, waiting for and observing the occurrence of the terminal power-on event, the transient power failure and the continuous power failure state are distinguished, and the flexibility of research and judgment is enhanced; for the multi-terminal system, the power failure events of other associated terminals or electric energy meters are verified synchronously, the overall comprehensive judgment of the power failure state of the terminal and the system is realized, and the comprehensiveness and systematicness of research and judgment are improved; in the power recovery research and judgment aspect, the power recovery event reported by the terminal and other equipment of the power recovery unit in the substation is marked, and the power recovery time is effectively judged to preliminarily confirm the power recovery state; the A-phase voltage of the terminal is called and measured in the case that the power recovery time is invalid and no other power failure event is reported; the terminal power recovery state is finally confirmed by comprehensively considering the terminal power recovery event, the voltage calling and measuring result and the associated electric energy meter state, and the power recovery event information is packaged into the database and pushed to the external system to realize the effective integration and utilization of information.

[0031] In addition, the power failure and power recovery research and judgment method of the terminal according to the above-mentioned application can also have the following additional technical features: According to one embodiment of the application, the main station of S11 receives the power failure event actively reported by the terminal, which is divided into two cases of single-terminal reporting and multi-terminal cooperative reporting: Case one: for a single terminal, the main station receives the power failure event actively reported by the terminal; Case two: for a multi-terminal system, the main station simultaneously receives the power failure events reported by multiple terminals, and performs A-phase voltage data calling and measurement on the terminals without reporting the power failure event, and performs power failure research and judgment according to the calling and measuring result.

[0032] The technical solution is based on the interaction mechanism of the terminal and the main station in the power system; the terminal can actively perceive its own power failure state and report, and the main station as the core processing unit receives the information and carries out research and judgment; for a multi-terminal system, considering that the states of the terminals may be different, not only the reported information is received, but also the voltage data of the terminals without reporting is actively called and measured, the key power parameter of voltage is used, the power failure situation is judged according to the preset rules, and the accurate and comprehensive grasp of the power failure state of terminals of different sizes is realized.

[0033] According to one embodiment of the present application, in the case S11, for the terminal that does not report the power failure event, the A-phase voltage of the associated electric energy meter is measured to assist in the judgment, and when the rated voltage of the electric energy meter is 220V, the judgment threshold is 132V, when the rated voltage of the electric energy meter is 100V, the judgment threshold is 60V, and when the rated voltage of the electric energy meter is 57.7V, the judgment threshold is 35V.

[0034] In the technical solution, different rated voltages of the electric energy meter are set with different judgment thresholds, which is based on the reasonable relationship between the rated voltage and the actual working voltage of the electric energy meter; when the voltage is lower than the corresponding threshold, it means that the circuit where the electric energy meter is located may have a power failure, and then it is inferred that the associated terminal may have a power failure. Therefore, the A-phase voltage of the associated electric energy meter of the terminal that does not report is measured to assist in the judgment.

[0035] According to one embodiment of the present application, in the main station delay 2 minutes of the S16, only the power-on event of the same terminal is concerned to avoid the interference between different terminal events.

[0036] In the technical solution, if the terminal truly restores the power supply within the 2 minutes, a stable power-on signal will be generated; if it is only a temporary fluctuation, there will be no continuous and effective power-on event. In this way, the main station can distinguish the temporary power failure from the true power restoration according to the accurate observation of the power-on event of the same terminal within the 2 minutes, avoid starting unnecessary repair processes due to misjudgment, and improve the accuracy and reliability of the power failure and power restoration judgment.

[0037] According to one embodiment of the present application, in the S16, if the main station receives the power-on event of the same terminal within 2 minutes, the power failure event of the corresponding terminal is discarded.

[0038] In the technical solution, if the main station receives the power-on event of the same terminal within 2 minutes, it means that the terminal may have only experienced a temporary power supply anomaly, and not a true power failure. Because if it is a true power failure, there will usually be no power-on within the 2 minutes. Therefore, discarding the power failure event of the corresponding terminal can avoid unnecessary repair operations caused by such temporary abnormal fluctuations and reduce resource waste.

[0039] According to one embodiment of the present application, in the S17, after comprehensively judging the power failure state of the terminal and the system as a whole, the main station encapsulates the terminal power failure event information, saves the power failure event information to the database, and pushes it to the external system.

[0040] In the technical solution, the information is pushed to the external system because the operation of the power system involves multiple departments and systems, such as the dispatching system, the operation and maintenance system, the customer service system, etc. Through information pushing, information sharing and collaborative work between departments are realized, and quick response and efficient handling in the event of a power failure are ensured.

[0041] According to one embodiment of the present application, in the S1 and S2, the judgment method further comprises a deduplication rule: if the master station receives a terminal power-on event, a power meter power-on event, a reported electricity collection data or a power data within 5 minutes, it performs corresponding deduplication processing to avoid repeated recording.

[0042] In the technical solution, repeated recording of these information will bring many drawbacks, such as occupying a large amount of storage space, increasing the burden of the database, and reducing the data query and processing efficiency; it may also interfere with subsequent data analysis, leading to misjudgment of the outage and power restoration situation.

[0043] Embodiment 2 Based on embodiment 1, as shown in Figure 2 The present embodiment provides a verification method for terminal outage and power restoration, which verifies the terminal and the power meter, and comprises the following steps: S3, terminal outage verification: after the master station receives the terminal reported outage event, it synchronously triggers the measurement of the associated power meter A-phase voltage, and if the voltage value meets the outage judgment condition, it confirms that the power meter outage is valid; if all associated power meters are out of power, it confirms that the terminal outage event is valid; S4, terminal power restoration verification: after the master station receives the terminal reported power restoration event, it synchronously triggers the measurement of the associated power meter A-phase voltage, and if the voltage value is not less than the judgment threshold, it confirms that the power meter power restoration is valid; if the power restoration terminal ratio reaches the preset threshold and the system load recovers to a certain proportion before the outage, it confirms that the terminal power restoration is valid.

[0044] The present technical solution realizes accurate outage and power restoration verification through the close association and data interaction between the terminal and the power meter. In the terminal outage verification link, after the master station receives the terminal reported outage event, it does not rely on this information alone, but synchronously initiates the A-phase voltage measurement of the associated power meter which has not reported the outage event; considering that the terminal may have false reports or not fully reported, if it meets the outage judgment condition, it confirms that the power meter outage is valid; when all associated power meters are out of power, it indirectly verifies the authenticity of the terminal outage event, and further confirms the validity of the terminal outage event, thus ensuring the accuracy of the outage judgment from multiple dimensions; in the terminal power restoration verification, after the master station receives the terminal reported power restoration event, it also measures the A-phase voltage of the associated power meter, and confirms that the power meter power restoration is valid when the voltage value is not less than the judgment threshold; considering the power restoration terminal ratio and the system load recovery, only when the power restoration terminal reaches the preset threshold and the system load recovers to a certain proportion before the outage, the terminal power restoration is confirmed to be valid, which comprehensively considers the power restoration status from the local to the whole.

[0045] According to one embodiment of the present application, in the terminal power-off verification of S3, when the power meter power-off event cross verification is performed, the following cases are excluded: the power meter repeatedly reports the power-off event within 1 hour; the power meter power-off event time is not the current day or the difference between the event time and the current time is more than 1 hour; the power meter communication is interrupted but the voltage is normal.

[0046] In the technical solution, the power meter repeatedly reports the power-off event within 1 hour is excluded because the repeated reporting within a short time is most likely caused by the power meter fault or signal interference, which is not a real power-off, and excluding such information can avoid interfering with the judgment of the real power-off state. The power meter power-off event time is not the current day or the difference between the event time and the current time is more than 1 hour is excluded because when the time span is too large, the relevance of the power-off event and the current terminal power-off verification is very weak, which may have been processed or belongs to other irrelevant cases, and after exclusion, the verification can focus on the power-off information related to the present. The power meter communication is interrupted but the voltage is normal is excluded because the communication interruption does not mean the actual power-off, and the normal voltage indicates that the power supply is not affected, and excluding such cases can prevent misjudgment of power-off due to communication problems and ensure that the cross verification result truly reflects the power-off state of the terminal and the power meter.

[0047] According to one embodiment of the present application, in the terminal power-on verification of S4, for the terminal that does not directly report the power-on event, but the associated power meter or smart metering switch has reported the power-on event, the reporting time of the power meter or smart metering switch is used as the reference; if the power-on ratio does not reach the threshold or the load is not restored, it is confirmed that the local power-on is effective, and the remaining terminal state needs to be checked; at the same time, the power-on verification is allowed to be performed through the distributed photovoltaic power generation current.

[0048] The technical solution comprehensively considers the reporting time of the associated equipment, the power-on ratio, the load condition, and the distributed photovoltaic power generation current, etc., to realize accurate and comprehensive terminal power-on verification, so as to more accurately grasp the power system power-on state.

[0049] Although the present application is described in detail with reference to the preferred embodiments by referring to the accompanying drawings, the present application is not limited thereto. Various equivalent modifications or replacements can be made to the embodiments of the present application by those skilled in the art without departing from the spirit and essence of the present application, and these modifications or replacements shall be within the scope of the present application. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or replacements, which shall be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for judging power failure and power recovery of a terminal, applied to rush repair of power failure and power recovery of the terminal, characterized in that, Comprise the following steps: S1, terminal power outage research, the specific steps are as follows: S11, the main station receives the power failure event reported by the terminal actively; S12, for the terminal 1 times within 1 hour Report power failure events, the main station only handles the first reported power failure event to avoid repeated processing; S13, the main station judges whether there is a marketing in-transit process for the terminal on the same day, if there is, the terminal power failure event is discarded to prevent misjudgment; S14, the main station verifies the validity of the terminal power failure event occurrence time, if the time is invalid, the power failure event is discarded; S15, the main station measures the terminal exchange collection A-phase voltage or total meter A-phase voltage, and preliminarily identifies the power failure according to the measurement result: if there is no return value, the voltage value is 0V or the voltage value is between 0V and the determination threshold, then it is preliminarily identified as power failure; S16, the main station reports after 2 minutes, waiting for the terminal power-on event; S17, for a multi-terminal system, whether there is other associated terminal or power meter power failure event is verified synchronously, and the overall power failure state of the terminal and the system is comprehensively judged; S2, terminal power recovery research, the specific steps are as follows: S21, the main station marks the power recovery event reported by the terminal, the II type concentrator and the I type collector in the substation level terminal unit, and judges the power recovery time effectively, if the power recovery time is valid, it is preliminarily judged as power recovery; S22, if the power recovery time is invalid and no other power failure event is reported, the main station measures the terminal A-phase voltage to research the power recovery, and confirms the power recovery if the voltage value is not less than the determination threshold; S23, the main station comprehensively confirms the terminal power recovery state according to the terminal power recovery event, the voltage measurement result and the associated power meter state, and encapsulates the power recovery event information into the database and pushes it to the external system.

2. The method of claim 1, wherein the power failure recovery of the terminal is determined based on the power failure recovery of the power supply device. In the S11, the main station receives the power failure event reported by the terminal actively, which is divided into two cases: single terminal report and multi-terminal cooperative report: Case one: for a single terminal, the main station receives the power failure event reported by the terminal actively; Case two: for a multi-terminal system, the main station receives the power failure events reported by multiple terminals, and measures the A-phase voltage data of the terminal which does not report the power failure event, and judges the power failure according to the measurement result.

3. The method of claim 2, wherein the power failure recovery of the terminal is determined based on the power failure recovery of the terminal and the power failure recovery of the neighboring terminal. In the S11, case two, for the terminal which does not report the power failure event, the A-phase voltage of the associated power meter is measured to assist in the research, the determination threshold is 132V when the rated voltage of the power meter is 220V, the determination threshold is 60V when the rated voltage of the power meter is 100V, and the determination threshold is 35V when the rated voltage of the power meter is 57.7V.

4. The power failure recovery judgment method of a terminal according to Claim 1, wherein In the S16, the main station reports after 2 minutes, only the power-on event of the same terminal is concerned to avoid interference between different terminal events.

5. The power failure recovery judgment method of a terminal according to Claim 4, wherein In the S16, if the main station receives the power-on event of the same terminal within 2 minutes, the corresponding terminal power failure event is discarded.

6. The power failure recovery judgment method of a terminal according to Claim 1, wherein In the S17, after comprehensively judging the overall power failure state of the terminal and the system, the main station encapsulates the terminal power failure event information, saves the power failure event information to the database, and pushes it to the external system.

7. The method of claim 1, wherein the power failure recovery of the terminal is determined based on the power failure recovery of the terminal and the power failure recovery of the neighboring terminal. In the S1 and S2, the research method further comprises a deduplication rule: if the main station receives the terminal power-on event, the power meter power-on event, the reported exchange collection data or the power data within 5 minutes, the corresponding deduplication processing is performed to avoid repeated recording.

8. A method for verifying power outage and restoration of a terminal, using the method for judging power outage and restoration of a terminal according to any one of claims 1-6, through cross verification of the terminal and the electric energy meter, characterized in that, Comprise the following steps; S3, terminal power failure verification: after the master station receives the power failure event reported by the terminal, the voltage of the associated electric energy meter A phase is measured synchronously, if the voltage value meets the power failure judgment condition, it is confirmed that the electric energy meter power failure is valid; if all associated electric energy meters are powered off, it is confirmed that the terminal power failure event is valid; S4, terminal power recovery verification: after the master station receives the power recovery event reported by the terminal, the voltage of the associated electric energy meter A phase is measured synchronously, if the voltage value is not less than the judgment threshold, it is confirmed that the electric energy meter power recovery is valid; if the proportion of power recovery terminals reaches the preset threshold and the system load recovers to a certain proportion before the power failure, it is confirmed that the terminal power recovery is valid.

9. The power outage restoration verification method of a terminal according to claim 8, wherein In the terminal power failure verification of S3, the following cases are excluded when cross-verifying the electric meter power failure event: the electric meter repeatedly reports the power failure event within 1 hour; the electric meter power failure event time is not the same day or the difference with the current time exceeds 1 hour; the electric meter communication is interrupted but the voltage is normal.

10. The power outage restoration verification method of a terminal according to claim 8, wherein In the terminal power recovery verification of S4, for terminals that do not directly report power recovery events, but associated electric energy meters or smart measurement switches have reported power recovery events, the reporting time of the electric energy meter or smart measurement switch is used as the reference; if the power recovery proportion does not reach the threshold or the load is not recovered, it is confirmed that the local power recovery is valid, and the remaining terminal status needs to be checked; at the same time, power recovery verification is allowed through the power generation current of distributed photovoltaic.

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