CN113013855A - Power distribution network fault recovery method and device and terminal equipment - Google Patents

Abstract

The present invention is applicable to the technical field of electric power systems, and provides a distribution network fault recovery method, device and terminal equipment, wherein the distribution network fault recovery method includes: at a fault occurrence position that is not adjacent to a tie switch of the distribution network Under the circumstance, according to the historical power consumption load of the multiple supplying station areas corresponding to the fault location, obtain the first total amount of the first switching supply load at the switching time of the multiple supplying station areas; when corresponding to the tie switch When the redundant power is less than the total amount of the first transfer load, according to the pre-obtained dynamic evaluation score of the power consumption difference of the transfer station area at the time of transfer, the to-be-removed station area is determined among the multiple transfer station areas. ;Remove the table area to be removed, and close the liaison switch, so as to restore the transfer to the transfer table area other than the table area to be removed in the plurality of transfer table areas. By adopting the present invention, the utilization rate of transfer resources can be improved.

Description

Distribution network fault recovery method, device and terminal equipment

technical field

The invention belongs to the technical field of power systems, and in particular relates to a distribution network fault recovery method, device and terminal equipment.

Background technique

When the distribution network fails, the rapid isolation and self-healing technology can be used to restore the distribution network fault, so as to reduce the time of power failure and improve the reliability of the power supply of the distribution network. Distribution network fault recovery means that after a distribution network fault occurs, the optimal switch combination scheme is determined to achieve the goals of recovering the most power-loss loads, the least number of switching operations, the smallest network loss, and the least complaints. Grid connectivity, radial, feeder not overloaded, etc.

However, in the process of formulating the existing failover supply recovery scheme, there is a problem of low utilization rate of the supplying resources for the restoration of power supply in the non-faulty area in the faulty line.

SUMMARY OF THE INVENTION

In view of this, embodiments of the present invention provide a distribution network fault recovery method, device, and terminal device, so as to solve the problem of low utilization rate of transfer supply resources in the prior art.

A first aspect of the embodiments of the present invention provides a distribution network fault recovery method, including:

In the case where the fault location is not adjacent to the tie switch of the distribution network, according to the historical electricity load of the multiple supply stations corresponding to the fault location, obtain multiple supply stations that need to be transferred. The total amount of the first transfer load at the moment;

When the redundant power corresponding to the tie switch is less than the total amount of the first transfer load, the dynamic evaluation score is based on the pre-obtained power consumption difference of the transfer station area at the transfer time. Determining the station area to be removed; wherein, the total amount of the second transfer load of the station area to be transferred other than the station area to be removed among the plurality of station areas to be transferred is less than or equal to the redundant power;

The table area to be removed is cut off, and the liaison switch is closed to perform transfer and restoration of the transfer table area other than the table area to be removed among the plurality of transfer table areas.

Optionally, according to the historical power consumption loads of the multiple supplying station areas corresponding to the fault location, obtain the total first transfer load of the multiple supplying station areas at the time of switching, including:

According to the historical electricity load, estimate the transfer load of each transfer station area in the multiple transfer station areas at the transfer time;

The sum of the transfer load of each of the multiple transfer-required platform areas is determined as the first total transfer load.

Optionally, according to the historical power consumption load, estimate the transfer load of each of the multiple transfer station areas at the transfer time, including:

Obtain the N electricity loads of the target station area in the day before the fault occurs; the target station area is any one of the multiple station areas that need to be transferred;

Obtain the X power consumption loads before the transfer time every day in the M days before the target station area, and the Y power consumption loads after the transfer time every day in the M days before the target station area;

Determine the maximum value among N power consumption loads, M×X power consumption loads and M×Y power consumption loads as the transfer power consumption load of the target station area at the time of transfer;

Wherein, M, N, X and Y are all integers greater than zero.

Optionally, according to the pre-obtained dynamic evaluation score of the power consumption difference of the station area to be transferred at the time of transfer, determine the station area to be removed in the plurality of station areas to be transferred, including:

According to the order of the dynamic evaluation score of electricity difference from small to large, sort the multiple station areas that need to be transferred;

Determine the forwarding station area whose serial number is the first target serial number among the multiple supplying station areas; wherein, the total amount of the third transfer load of all the forwarding station areas whose serial number is after the first target serial number is less than or equal to Redundant power, the total amount of the fourth transfer load of all the transfer stations with the serial number after the first target serial number and the fourth transfer load of the transfer station with the serial number of the first target serial number is greater than or equal to the redundant power;

All the areas to be transferred whose serial numbers are after the first target serial number are determined as the areas to be removed.

Optionally, according to the pre-obtained dynamic evaluation score of the power consumption difference of the station area to be transferred at the time of transfer, determine the station area to be removed in the plurality of station areas to be transferred, including:

According to the dynamic evaluation score of electricity difference in descending order, sort the multiple station areas that need to be transferred;

Among the multiple supply-requesting station areas, determine the supply-requiring area whose serial number is the second target serial number; wherein, the total amount of the fifth transfer load of all the supplying-requiring areas whose serial numbers are before the second target serial number is less than or equal to Redundant power, the total amount of the sixth transfer load of all the transfer stations with the serial number before the second target serial number and the sixth transfer load of the transfer station with the serial number of the second target serial number is greater than or equal to the redundant power;

All the areas to be transferred whose serial numbers are before the second target serial number are determined as the areas to be removed.

Optionally, the power consumption difference dynamic evaluation score is obtained based on at least one of the power consumption dependency score, the power outage tolerance score or the historical power outage score.

Optionally, the power consumption dependency score is obtained based on the difference between the maximum power consumption load and the minimum power consumption load of the transfer station area on the previous day, and the corresponding relationship between the power consumption load of the transfer station area at the time of transfer. ;

The power outage tolerance score is obtained based on the corresponding relationship between the average number of complaints and the average complaint interval in the area that needs to be transferred to the station;

The historical power outage score is obtained based on the corresponding relationship between the number of outages in the station area that needs to be transferred and the total number of outages on the entire line within the preset period.

Optionally, before determining the station area to be removed among the multiple station areas requiring transfer according to the dynamic evaluation score of the pre-obtained power consumption difference of the station area to be transferred at the time of transfer, the distribution network fault recovery method is further include:

Obtain the power dependence score, power outage tolerance score and historical power outage score of the station area that needs to be transferred at the time of transfer;

Determine the sum of the multiplication value of the power consumption dependency score and the first preset weight, the multiplication value of the power outage tolerance score and the second preset weight, and the multiplication value of the historical power failure score and the third preset weight as the power required to be transferred. The dynamic evaluation score of the electricity consumption difference in the supply area at the time of transfer.

A second aspect of the embodiments of the present invention provides a distribution network fault recovery device, including:

The acquisition module is used to acquire multiple supply-demanding stations according to the historical electricity load of multiple supply-demanding stations corresponding to the fault-occurring location when the fault location is not adjacent to the tie switch of the distribution network. The total amount of the first transfer load of the station area at the time of transfer;

The determining module is used to dynamically evaluate the score according to the pre-acquired difference in power consumption of the station area that needs to be transferred at the time of transfer when the redundant power corresponding to the tie switch is less than the total amount of the first transfer load. Determine the station area to be removed in the transfer station area; wherein, the total amount of the second transfer load of the station area to be transferred except the station area to be removed in the plurality of station areas to be transferred is less than or equal to the redundant power;

The control module is used to cut off the table area to be removed, and close the liaison switch, so as to perform transfer recovery for the transfer table area other than the table area to be removed among the plurality of transfer table areas.

Optionally, the get module is also used to:

According to the historical electricity load, estimate the transfer load of each transfer station area in the multiple transfer station areas at the transfer time;

The sum of the transfer load of each of the multiple transfer-required platform areas is determined as the first total transfer load.

Optionally, the get module is also used to:

Obtain the N electricity loads of the target station area in the day before the fault occurs; the target station area is any one of the multiple station areas that need to be transferred;

Obtain the X power consumption loads before the transfer time every day in the M days before the target station area, and the Y power consumption loads after the transfer time every day in the M days before the target station area;

Determine the maximum value among N power consumption loads, M×X power consumption loads and M×Y power consumption loads as the transfer power consumption load of the target station area at the time of transfer;

Wherein, M, N, X and Y are all integers greater than zero.

Optionally, the determination module is also used to:

According to the order of the dynamic evaluation score of electricity difference from small to large, sort the multiple station areas that need to be transferred;

Determine the forwarding station area whose serial number is the first target serial number among the multiple supplying station areas; wherein, the total amount of the third transfer load of all the forwarding station areas whose serial number is after the first target serial number is less than or equal to Redundant power, the total amount of the fourth transfer load of all the transfer stations with the serial number after the first target serial number and the fourth transfer load of the transfer station with the serial number of the first target serial number is greater than or equal to the redundant power;

All the areas to be transferred whose serial numbers are after the first target serial number are determined as the areas to be removed.

Optionally, the determination module is also used to:

According to the dynamic evaluation score of electricity difference in descending order, sort the multiple station areas that need to be transferred;

Among the multiple supply-requesting station areas, determine the supply-requiring area whose serial number is the second target serial number; wherein, the total amount of the fifth transfer load of all the supplying-requiring areas whose serial numbers are before the second target serial number is less than or equal to Redundant power, the total amount of the sixth transfer load of all the transfer stations with the serial number before the second target serial number and the sixth transfer load of the transfer station with the serial number of the second target serial number is greater than or equal to the redundant power;

All the areas to be transferred whose serial numbers are before the second target serial number are determined as the areas to be removed.

Optionally, the power consumption difference dynamic evaluation score is obtained based on at least one of the power consumption dependency score, the power outage tolerance score or the historical power outage score.

Optionally, the power consumption dependency score is obtained based on the difference between the maximum power consumption load and the minimum power consumption load of the transfer station area on the previous day, and the corresponding relationship between the power consumption load of the transfer station area at the time of transfer. ;

The power outage tolerance score is obtained based on the corresponding relationship between the average number of complaints and the average complaint interval in the area that needs to be transferred to the station;

The historical power outage score is obtained based on the corresponding relationship between the number of outages in the station area that needs to be transferred and the total number of outages on the entire line within the preset period.

Optionally, the determination module is also used to:

Obtain the power dependence score, power outage tolerance score and historical power outage score of the station area that needs to be transferred at the time of transfer;

Determine the sum of the multiplication value of the power consumption dependency score and the first preset weight, the multiplication value of the power outage tolerance score and the second preset weight, and the multiplication value of the historical power failure score and the third preset weight as the power required to be transferred. The dynamic evaluation score of the electricity consumption difference in the supply area at the time of transfer.

A third aspect of the embodiments of the present invention provides a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, when the processor executes the computer program The steps of the method as described in the first aspect are implemented.

The beneficial effects that the embodiment of the present invention has compared with the prior art are:

In the embodiment of the present invention, the total amount of the first transfer load at the transfer time of a plurality of transfer stations can be dynamically evaluated, because the first total amount of transfer load obtained by the evaluation can reflect each transfer load at the transfer time. Therefore, the waste of transfer capacity caused by the use of rated load for capacity evaluation can be avoided, and the utilization rate of transfer resources can be improved. After that, when the redundant power corresponding to the tie switch is less than the total amount of the first transfer load, the score can be dynamically evaluated according to the pre-acquired difference in power consumption of the transfer station area at the transfer time, and the score can be dynamically evaluated in multiple transfer power stations. The table areas to be removed are determined in the table areas, so that the table areas to be removed can be removed, and the liaison switch is closed to perform transfer recovery for the transfer table areas other than the table areas to be removed among the plurality of transfer table areas.

Since the dynamic evaluation score of the difference in electricity consumption can reflect the electricity demand of users who need to be transferred to the station area, the users of the same level can be classified into the electricity consumption level twice based on the dynamic evaluation score of the difference in electricity consumption, so as to be able to Based on the power consumption level of the secondary division, the power supply transfer of the station area with a high power consumption level is preferentially restored, so that the power consumption needs of different users can be met to the greatest extent, and the user satisfaction with electricity consumption can be improved.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present invention. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic diagram of a deployment architecture according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of another deployment architecture provided by an embodiment of the present invention;

FIG. 3 is a flowchart of steps of a method for restoring a distribution network fault according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a fault recovery processing flow according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a distribution network fault recovery device according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a terminal device according to an embodiment of the present invention.

Detailed ways

In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures and technologies are set forth in order to provide a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

In order to illustrate the technical solutions of the present invention, the following specific embodiments are used for description.

In order to reduce the impact of power outages as much as possible, two distribution lines can be connected through a switch to realize the transfer between loads. The switch used to connect the two distribution lines is called a "tie switch". During the formulation of the existing distribution network fault transfer recovery plan, the capacity evaluation is usually carried out based on the rated load of the non-faulty area in the faulty line. The tie switch is used to transfer the supply to the non-faulty area of the faulty line; if the redundant capacity of the normal line is less than the estimated capacity of the non-faulty area, the load with a higher level will be given priority to restore power supply, and other loads can only be removed.

Although the above method realizes failover for recovery, it has the following disadvantages:

In actual operation, the load of most stations at the moment of failure is far less than their rated load capacity. If the rated load of the non-faulty area is used for capacity evaluation, the transfer capacity will be wasted, and the power resources will not be fully and effectively utilized. Therefore, in the process of formulating the existing failover supply restoration scheme, there is a problem of low utilization rate of the supplying resources for the restoration of power supply in the non-faulty area in the faulty line.

In addition, the method of restoring power supply to the load with a higher priority guarantee level ensures that the high-level users can quickly restore the power supply, but in practice, the users in some areas have the same level and are all ordinary users. In this case, the method of restoring the area is selected. It is relatively random, and there is no reasonable transfer of power supply based on the user's power supply reliability needs, so it often causes users to complain frequently about power outages, reduces the power supply service level, and has a greater social impact.

In order to solve the problems of the prior art, the embodiments of the present invention provide a method, apparatus and terminal equipment for restoring a distribution network fault. The following first introduces the method for restoring a distribution network fault provided by the embodiment of the present invention.

The execution body of the distribution network fault recovery method can be a distribution network fault recovery device, and the distribution network fault recovery device can be a terminal device with a processor and a memory, such as a fault self-healing transfer device, which can be deployed in At the main station of distribution automation or the tie switch, the corresponding master switch of the station area can be connected to the intelligent fusion terminal of the station area, and the intelligent fusion terminal of the station area can be connected to the main station of the distribution automation. If the fault self-healing transfer equipment is deployed in the distribution automation main station, the corresponding deployment architecture is shown in Figure 1. The distribution automation main station can remotely control the intelligent fusion terminal in the area to realize the opening and closing of the main switch in the station area. If the fault self-healing transfer equipment is deployed at the tie switch, the corresponding deployment structure is shown in Figure 2. The fault self-healing transfer equipment can be embedded in the intelligent terminal of the tie switch through micro-applications. The fusion terminal is connected by horizontal communication, and the liaison switch intelligent terminal can realize the opening and closing of the main switch in the station area through the intelligent fusion terminal in the console area.

As shown in FIG. 3 , the distribution network fault recovery method provided by the embodiment of the present invention may include the following steps:

Step S310: In the case where the fault location is not adjacent to the tie switch of the power distribution network, obtain a plurality of resupply areas according to the historical power load of the multiple resupply areas corresponding to the fault location. The total amount of the first transfer load at the transfer time.

Step S320: When the redundant power corresponding to the tie switch is less than the total amount of the first transfer load, dynamically evaluate the score according to the pre-acquired difference in the power consumption of the transfer station area at the transfer time, and determine the score in the multiple transfer power stations. In the table area, the table area to be removed is determined.

In step S330, the table area to be removed is cut off, and the tie switch is closed, so as to perform transfer restoration for the transfer table area other than the table area to be removed among the plurality of transfer table areas.

In the embodiment of the present invention, the total amount of the first transfer load at the transfer time of a plurality of transfer stations can be dynamically evaluated, because the first total amount of transfer load obtained by the evaluation can reflect each transfer load at the transfer time. Therefore, the waste of transfer capacity caused by the use of rated load for capacity evaluation can be avoided, and the utilization rate of transfer resources can be improved. After that, when the redundant power corresponding to the tie switch is less than the total amount of the first transfer load, the score can be dynamically evaluated according to the pre-acquired difference in power consumption of the transfer station area at the transfer time, and the score can be dynamically evaluated in multiple transfer power stations. The table areas to be removed are determined in the table areas, so that the table areas to be removed can be removed, and the liaison switch is closed to perform transfer recovery for the transfer table areas other than the table areas to be removed among the plurality of transfer table areas.

Since the dynamic evaluation score of the difference in electricity consumption can reflect the electricity demand of users who need to be transferred to the station area, the users of the same level can be classified into the electricity consumption level twice based on the dynamic evaluation score of the difference in electricity consumption, so as to be able to Based on the power consumption level of the secondary division, the power supply transfer of the station area with a high power consumption level is preferentially restored, so that the power consumption needs of different users can be met to the greatest extent, and the user satisfaction with electricity consumption can be improved.

Step S310 will be introduced below.

In some embodiments, when a fault self-healing transfer scheme is formulated, it may be first determined whether the fault occurrence location is adjacent to the tie switch. If the fault location is adjacent to the tie switch, it is necessary to keep the tie switch disconnected to avoid secondary damage to the related equipment at the location where the fault occurs due to sudden power supply.

If the fault location is not adjacent to the tie switch, it is necessary to further judge whether the redundant power corresponding to the tie switch, that is, the power supply capacity of the non-faulty side, is sufficient, and then formulate a corresponding transfer recovery plan according to the judgment result. If the redundant power corresponding to the tie switch is greater than or equal to the total amount of the first transfer load of the multiple transfer stations corresponding to the fault location at the moment of transfer, that is, the moment when the transfer process is performed, it indicates that the tie switch corresponds to The redundant power is sufficient, and it can transfer all the multiple transfer stations corresponding to the fault location. If at the time of transfer, the redundant power corresponding to the tie switch is less than the total amount of the first transfer load of the multiple transfer stations corresponding to the fault location, it indicates that the redundant power corresponding to the tie switch is insufficient, and the fault can be prevented. The part corresponding to the location needs to be transferred to the Taiwan area for transfer.

Optionally, in the above-mentioned step S310, according to the historical power consumption loads of the multiple supplying station areas corresponding to the fault locations, the total amount of the first switching load of the multiple supplying station areas at the switching time is obtained. The specific processing can be as follows: according to the historical power consumption load, estimate the transfer load of each of the multiple supply-demanding station areas at the switching time; The total amount of the transfer load in the transfer station area is determined as the total amount of the first transfer load.

In some embodiments, the historical power consumption amount may be the power consumption load amount of the to-be-supplied station area at different times on the day before the failure and several days before the failure, for example, the power consumption load amount of each integer point.

Taking any one of the resupply station areas as an example, the resupply station area can be called the target station area, and the estimation process of the transfer load amount of the target station area is introduced.

Specifically, N electricity loads in the target station area in the day before the fault occurs, X electricity consumption loads before the transfer time in the M days before the target station area, and M before the target station area can be obtained. Y electricity loads after the transfer time for each day of the day, where M, N, X, and Y are all integers greater than zero. It is worth mentioning that the above-mentioned X power consumption loads and Y power consumption loads are preferably the power consumption loads at the integer points closest to the transfer time. In this way, the target station area at the transfer time can be estimated more accurately. electricity load. In addition, the above-mentioned daily transfer time in the previous M days refers to the time corresponding to the time when the transfer process is performed in each day. For example, the time when the transfer process is performed on that day is 10:30 am, Then the transfer time of each day in the previous M days refers to 10:30 am on the corresponding day.

Afterwards, the maximum value among the N power consumption loads, the M×X power consumption loads, and the M×Y power consumption loads may be determined as the transfer power consumption load of the target station area at the transfer time. In this way, the transfer load of each of the multiple supply-required stations can be estimated based on the load conditions of each transfer-required station area.

Finally, the sum of the transfer load of each of the multiple transfer-required station areas may be determined as the first total transfer load. In this way, the total amount of the first transfer load at the transfer time of the multiple transfer stations can be obtained.

Step S320 will be introduced below.

In some embodiments, the power consumption difference dynamic evaluation score may be obtained based on at least one of the power consumption dependency score, the power outage tolerance score, or the historical power outage score. Among them, the electricity dependence score can be obtained based on the difference between the maximum electricity load and the minimum electricity load of the station area to be transferred on the previous day, and the corresponding relationship between the electricity load of the station area to be transferred at the time of transfer; The power outage tolerance score can be obtained based on the corresponding relationship between the average number of complaints and the average complaint interval in the area to be transferred; the historical power outage score can be based on the correspondence between the number of power outages in the area to be transferred and the total number of outages on the entire line within a preset period relationship is obtained.

Specifically, different score values can be set by setting different gears. Taking the electricity consumption dependency score as an example, the difference between the maximum electricity consumption load and the minimum electricity consumption load of the station area to be transferred on the previous day can be divided into a preset number of equal parts, such as five equal parts, and then the minimum electricity consumption load can be divided into five equal parts. On the basis of increasing the above-mentioned difference in different numbers and equal parts in turn, a preset number of power consumption loads can be obtained, and correspondingly, the power consumption dependency scores corresponding to these preset number of power consumption loads can be set. After that, the corresponding power consumption dependency score can be determined according to the power consumption load gear of the power consumption load at the time of transfer in the station area to be transferred.

It is worth mentioning that the dynamic evaluation score of the difference in electricity consumption can reflect the electricity demand of users who need to be transferred to the station area. In this way, users of the same level can be divided into the same level based on the dynamic evaluation score of the difference in electricity consumption. Therefore, based on the secondary division of the power consumption level, the power supply transfer of the stations with high power consumption levels can be restored first, so that the power consumption needs of different users can be met to the greatest extent, and the user satisfaction with electricity consumption can be improved.

Optionally, the dynamic evaluation score of the difference in electricity consumption can be obtained according to the weights corresponding to the various scores, and the corresponding processing can be as follows: obtain the electricity consumption dependency score and the power outage tolerance score of the station area that needs to be transferred at the time of transfer. and the historical power outage score; the multiplication of the power consumption dependency score and the first preset weight, the multiplication of the power outage tolerance score and the second preset weight, and the multiplication of the historical power outage score and the third preset weight are calculated. The sum is determined as the dynamic evaluation score of the difference in electricity consumption at the time of transfer in the station area that needs to be transferred.

其中，N₁、N₂、N₃分别为用电依赖分值、停电忍耐分值、历史停电分值的权重系数，0<N₁<1、0<N₂<1、0<N₃<1，N₁+N₂+N₃＝1；

为T时刻该台区的用电依赖分值，

为T时刻该台区的停电忍耐分值，

为T时刻该台区的历史停电分值。具体的，N₁、N₂、N₃可根据实际状况设定，例如可采取N₁＝N₂＝N₃＝1/3，本发明实施例对其不做具体限定。In some embodiments, taking the transfer time as time T, the dynamic evaluation score of the electricity consumption difference of a certain station area at time T is

Among them, N ₁ , N ₂ , and N ₃ are the weight coefficients of power consumption dependency score, power outage tolerance score, and historical power outage score, respectively, 0<N ₁ <1, 0<N ₂ <1, 0<N ₃ < 1, N ₁ +N ₂ +N ₃ =1;

is the electricity consumption dependence score of the station area at time T,

is the power outage tolerance score of the station area at time T,

It is the historical power outage score of the station area at time T. Specifically, N ₁ , N ₂ , and N ₃ may be set according to actual conditions, for example, N ₁ =N ₂ =N ₃ =1/3 may be adopted, which is not specifically limited in the embodiment of the present invention.

In this way, after obtaining the total amount of the first transfer load at the transfer time of the multiple stations that need to be transferred, if the redundant power corresponding to the tie switch is less than the total amount of the first transfer load, you can The dynamic evaluation score of the power consumption difference of the supplying area at the time of transfer is used to determine the to-be-removed area among the multiple supplying areas. It should be noted that the dynamic evaluation score of the electricity consumption difference of the platform area to be removed is smaller than the dynamic evaluation score of the electricity consumption difference of the unremoved platform area. If there are stations with the same dynamic evaluation score of the difference in electricity consumption, the priority of the station with a larger electricity load can be set higher than that of the station with a smaller electricity load. The station area with a smaller electricity load is determined as the station area to be removed, and then the station area with a larger electricity load is determined as the station area to be removed.

It should be noted that the station area to be removed also has the following characteristics: the total amount of the second transfer load of the station area to be transferred other than the station area to be removed among the plurality of station areas to be transferred is less than or equal to the redundant power. In this way, when these to-be-removed station areas are removed, the redundant power corresponding to the tie switch will be greater than or equal to the total transfer load of the remaining station areas that need to be transferred. for recovery. Because the dynamic evaluation scores of the remaining power consumption differences in the remaining station areas that need to be transferred are relatively high, it can meet the power consumption needs of different users to the greatest extent, improve user satisfaction with power consumption, reduce power outage complaints, and improve power supply service levels.

Optionally, the table area to be removed may be determined in a sorting manner.

In some embodiments, the plurality of station areas to be transferred may be sorted according to the ascending order of the dynamic evaluation score of the difference in electricity consumption. Afterwards, the forwarding station area with the serial number of the first target serial number may be determined from the multiple supplying station areas, wherein the total amount of the third transfer load of all the forwarding station areas with the serial number after the first target serial number Less than or equal to the redundant power, the total amount of the fourth transfer load of all the transfer stations with the serial number after the first target serial number and the fourth transfer load with the serial number of the first target serial number is greater than or equal to the redundant power. Finally, all the areas to be transferred with the serial numbers after the first target serial number may be determined as the areas to be removed. In this way, the redundant capacity can be maximized through the above method, and the utilization efficiency of power grid resources can be greatly improved.

In some embodiments, the plurality of station areas to be transferred may also be sorted in descending order of the dynamic evaluation score of the difference in electricity consumption. Afterwards, a transfer-to-supply area whose serial number is the second target serial number may be determined from the plurality of transfer-to-supply station areas, wherein the total amount of the fifth transfer load of all the transfer-to-supply station areas whose serial numbers are before the second target serial number Less than or equal to the redundant power, the total amount of the sixth transfer load of all the transfer stations with the serial number before the second target serial number and the transfer station zone with the second target serial number is greater than or equal to the redundant power. Finally, all the areas to be transferred whose serial numbers are before the second target serial number may be determined as the areas to be removed.

Step S330 will be introduced below.

In some embodiments, after the table area to be removed is determined, the table area to be removed can be removed, and then the tie switch is closed, so that the table area to be transferred other than the table area to be removed from the plurality of table areas to be transferred can be Carry out transfer recovery.

It should be noted that, since the power load of each station area to be transferred and the redundant power corresponding to the tie switch are dynamically changed, it is possible to re-evaluate the power consumption of each station every preset time period, such as 1 hour or 2 hours. The electricity load of the transfer station area is evaluated, and then based on the real-time redundant power, the station area to be removed is re-determined.

In order to better understand the distribution network fault recovery method provided by the embodiment of the present invention, a fault recovery processing flow is provided below, as shown in FIG. 4 .

When making a fault self-healing transfer scheme, first determine whether the fault location is adjacent to the tie switch. If it is adjacent, lock the tie switch to keep it disconnected. If it is not adjacent, judge whether the power supply capacity S (redundant power) of the _non -faulty side of the tie switch is sufficient.

进行动态估算，若

则闭合联络开关，故障侧需转供区域恢复供电；若

则按照该区域台区用电差异动态评价分值对台区进行由低至高排序，其中，S_ATj表示T时刻排名第j位的台区A容量，由公式

计算K，依次切除排序小于等于K的台区后，闭合联络开关。Specifically, the regional capacity needs to be transferred to the fault side

For dynamic estimation, if

Then close the tie switch, and the fault side needs to be transferred to the area to restore power supply; if

Then, according to the dynamic evaluation score of the power consumption difference between the stations in this area, the stations are sorted from low to high, where S _ATj represents the capacity of the j-th station A at time T, and is calculated by the formula

Calculate K, cut off the stations with the order less than or equal to K in turn, and close the tie switch.

The capacity of the area to be transferred can be estimated according to different transfer times. The load value of the two integer points before and after the transfer time of the first M days in the station area and the load value of the two integer points before the fault time of the day can be taken, a total of 4×M+ Two collection points, the maximum value among them is taken as the estimated load value at time T in the station area at this moment. If the transfer plan needs to be changed, the capacity of the area to be transferred shall be estimated based on the new transfer time. Among them, T is the nearest integer point at the time of failure, S _iT represents the load of station area i at time T, and N represents the number of stations in the area where the fault side needs to be transferred.

In addition, the dynamic evaluation score of the power consumption difference in the station area can be composed of three elements: the power consumption dependence score, the power outage tolerance score, and the historical power outage score.

以此类推，当“前日用电最小负荷+I<T时刻用户负荷<前日用电最小负荷+2I”时，T时刻用电依赖分值的评价结果

当“前日用电最小负荷+2I<T时刻用户负荷<前日用电最小负荷+3I”时，T时刻用电依赖分值的评价结果

当“前日用电最小负荷+3I<T时刻用户负荷<前日用电最小负荷+4I”时，T时刻用电依赖分值的评价结果

当“前日用电最小负荷+4I<T时刻用户负荷”时，T时刻用电依赖分值的评价结果

Specifically, the electricity consumption dependency score can reflect the user's electricity consumption dependency, that is, the user's dependence on electric energy at a certain moment, which can be obtained from the electricity load curve of the station area. The electricity dependence score can be divided into 5 grades, set I = (the maximum load of electricity consumption on the previous day - the minimum load of electricity consumption on the previous day)/4, when "the user load at time T < the minimum electricity consumption load on the previous day + I", define T The evaluation results of the time-dependent electricity consumption score

By analogy, when "minimum load of electricity consumption on the previous day+I<user load at time T <minimum load of electricity consumption on the previous day+2I", the evaluation result of electricity consumption dependence score at time T

When "minimum load of electricity on the previous day + 2I < user load at time T < minimum load of electricity on the previous day + 3I", the evaluation result of the electricity dependence score at time T

When "minimum load of electricity on the previous day + 3I < user load at time T < minimum load of electricity on the previous day + 4I", the evaluation result of the electricity dependence score at time T

When "minimum load of electricity consumption on the previous day + 4I < user load at time T", the evaluation result of the electricity consumption dependence score at time T

与停电忍耐系数

之和，即

其中，

The power outage tolerance score can reflect the power outage tolerance of users, that is, the average tolerance of users in a certain station area for power outages, and its value is equal to the easy complaint coefficient of the station area.

and power outage tolerance factor

the sum, that is

in,

当

台区易投诉系数

当

台区易投诉系数

停电投诉间隔，可以定义为台区某次停电后，该台区第一个停电投诉电话打入时刻减去台区停电时刻的时间间隔。其中，

when

Taiwan District Easy Complaint Coefficient

when

Taiwan District Easy Complaint Coefficient

The interval of blackout complaints can be defined as the time interval between the time when the first blackout complaint call in the station area minus the time of the blackout in the station area after a power outage in the station area. in,

当

停电忍耐系数

当

停电忍耐系数

若某次停电用户未投诉，该次停电事件不计入。

when

Power outage tolerance factor

when

Power outage tolerance factor

If the user does not complain about a power outage, the power outage event will not be counted.

以此类推，当“I_t≦某台区近三个月内的停电次数<2I_t”时，该台区历史停电分值

当“2I_t≦某台区近三个月内的停电次数<3I_t”时，该台区历史停电分值

当“3I_t≦某台区近三个月内的停电次数<4I_t”时，该台区历史停电分值

当“4I_t≦某台区近三个月内的停电次数”时，该台区历史停电分值

The historical power outage score can reflect the frequency of power outages in a region, and it can be divided into 5 grades. Let It = the total number of power _outages in the past three months in each station area of the entire line/4, when "a station area in the past three months" When the number of power outages within <I _t ”, the historical power outage score of the station area

By analogy, when "I _t ≤ the number of power outages in a certain station area in the past three months < 2I _t ", the historical power outage score of the station area

When "2I _t ≤ the number of power outages in a certain station area in the past three months < 3I _t ", the historical power outage score of the station area

When "3I _t ≤ number of power outages in a certain station area in the past three months < 4I _t ", the historical power outage score of the station area

When "4I _t ≤ the number of power outages in a certain station area in the past three months", the historical power outage score of the station area

After the transfer, if at a certain moment, the total load of the transfer is greater than S _not , that is, the non-faulty line is overloaded, the transfer station area can be removed in order from low to high according to the dynamic evaluation score of the power consumption difference in the station area, until the transfer station area is changed. The total amount of supply and load < S _non .

Because the real-time load budget method is adopted in the distribution network fault recovery method provided by the embodiment of the present invention, the power grid transfer capacity can be maximized and the utilization efficiency of the power grid resources can be greatly improved. In addition, it can provide a new solution for the distribution network with insufficient transfer capacity, and realize the efficient utilization of power grid capacity resources while ensuring the reliability of power supply. In addition, a dynamic evaluation method is adopted, which can evaluate the power demand of the station area in different time periods to ensure that the fault recovery plan is more reasonable. At the same time, it also considers the difference of users' electricity consumption, takes into account the power supply capacity of the power grid and the electricity demand of users, improves the service quality, and can be implemented based on existing data resources, with strong practicability.

Based on the distribution network fault recovery method provided by the above embodiments, correspondingly, the present invention also provides a specific implementation manner of a distribution network fault recovery device applied to the distribution network fault recovery method. See the examples below.

As shown in FIG. 5, a distribution network fault recovery device 500 is provided, and the device includes:

The obtaining module 510 is configured to obtain a plurality of transfer-required stations according to the historical power consumption load of a plurality of transfer-to-supply station areas corresponding to the fault-occurring position under the condition that the fault occurrence position is not adjacent to the tie switch of the power distribution network. The total amount of the first transfer load in the supply area at the time of transfer;

The determination module 520 is configured to dynamically evaluate the score according to the pre-acquired difference in power consumption of the station area that needs to be transferred at the time of transfer when the redundant power corresponding to the tie switch is less than the total amount of the first transfer load. Determine the station area to be removed in the station area to be transferred; wherein, the total amount of the second transfer load of the station area to be transferred other than the station area to be removed in the station area to be transferred is less than or equal to the redundant power;

The control module 530 is used for excising the table area to be removed, and closing the contact switch, so as to perform transfer recovery for the transfer table area other than the table area to be removed among the plurality of transfer table areas.

Optionally, the get module is also used to:

According to the historical electricity load, estimate the transfer load of each transfer station area in the multiple transfer station areas at the transfer time;

The sum of the transfer load of each of the multiple transfer-required platform areas is determined as the first total transfer load.

Optionally, the get module is also used to:

Obtain the N electricity loads of the target station area in the day before the fault occurs; the target station area is any one of the multiple station areas that need to be transferred;

Obtain the X power consumption loads before the transfer time every day in the M days before the target station area, and the Y power consumption loads after the transfer time every day in the M days before the target station area;

Determine the maximum value among N power consumption loads, M×X power consumption loads and M×Y power consumption loads as the transfer power consumption load of the target station area at the time of transfer;

Wherein, M, N, X and Y are all integers greater than zero.

Optionally, the determination module is also used to:

According to the order of the dynamic evaluation score of electricity difference from small to large, sort the multiple station areas that need to be transferred;

Determine the forwarding station area whose serial number is the first target serial number among the multiple supplying station areas; wherein, the total amount of the third transfer load of all the forwarding station areas whose serial number is after the first target serial number is less than or equal to Redundant power, the total amount of the fourth transfer load of all the transfer stations with the serial number after the first target serial number and the fourth transfer load of the transfer station with the serial number of the first target serial number is greater than or equal to the redundant power;

All the areas to be transferred whose serial numbers are after the first target serial number are determined as the areas to be removed.

Optionally, the determination module is also used to:

According to the dynamic evaluation score of electricity difference in descending order, sort the multiple station areas that need to be transferred;

Among the multiple supply-requesting station areas, determine the supply-requiring area whose serial number is the second target serial number; wherein, the total amount of the fifth transfer load of all the supplying-requiring areas whose serial numbers are before the second target serial number is less than or equal to Redundant power, the total amount of the sixth transfer load of all the transfer stations with the serial number before the second target serial number and the sixth transfer load of the transfer station with the serial number of the second target serial number is greater than or equal to the redundant power;

All the areas to be transferred whose serial numbers are before the second target serial number are determined as the areas to be removed.

Optionally, the power consumption difference dynamic evaluation score is obtained based on at least one of the power consumption dependency score, the power outage tolerance score or the historical power outage score.

Optionally, the power consumption dependency score is obtained based on the difference between the maximum power consumption load and the minimum power consumption load of the transfer station area on the previous day, and the corresponding relationship between the power consumption load of the transfer station area at the time of transfer. ;

The power outage tolerance score is obtained based on the corresponding relationship between the average number of complaints and the average complaint interval in the area that needs to be transferred to the station;

The historical power outage score is obtained based on the corresponding relationship between the number of outages in the station area that needs to be transferred and the total number of outages on the entire line within the preset period.

Optionally, the determination module is also used to:

Obtain the power dependence score, power outage tolerance score and historical power outage score of the station area that needs to be transferred at the time of transfer;

Determine the sum of the multiplication value of the power consumption dependency score and the first preset weight, the multiplication value of the power outage tolerance score and the second preset weight, and the multiplication value of the historical power failure score and the third preset weight as the power required to be transferred. The dynamic evaluation score of the electricity consumption difference in the supply area at the time of transfer.

In the embodiment of the present invention, the total amount of the first transfer load at the transfer time of a plurality of transfer stations can be dynamically evaluated, because the first total amount of transfer load obtained by the evaluation can reflect each transfer load at the transfer time. Therefore, the waste of transfer capacity caused by the use of rated load for capacity evaluation can be avoided, and the utilization rate of transfer resources can be improved. After that, when the redundant power corresponding to the tie switch is less than the total amount of the first transfer load, the score can be dynamically evaluated according to the pre-acquired difference in power consumption of the transfer station area at the transfer time, and the score can be dynamically evaluated in multiple transfer power stations. The table areas to be removed are determined in the table areas, so that the table areas to be removed can be removed, and the liaison switch is closed to perform transfer recovery for the transfer table areas other than the table areas to be removed among the plurality of transfer table areas.

Since the dynamic evaluation score of the difference in electricity consumption can reflect the electricity demand of users who need to be transferred to the station area, the users of the same level can be classified into the electricity consumption level twice based on the dynamic evaluation score of the difference in electricity consumption, so as to be able to Based on the power consumption level of the secondary division, the power supply transfer of the station area with a high power consumption level is preferentially restored, so that the power consumption needs of different users can be met to the greatest extent, and the user satisfaction with electricity consumption can be improved.

FIG. 6 is a schematic diagram of a terminal device provided by an embodiment of the present invention. As shown in FIG. 6 , the terminal device 6 in this embodiment includes: a processor 60 , a memory 61 , and a computer program 62 stored in the memory 61 and running on the processor 60 . When the processor 60 executes the computer program 62, the steps in each of the foregoing embodiments of the distribution network fault recovery method are implemented. Alternatively, when the processor 60 executes the computer program 62, the functions of the modules/units in the foregoing device embodiments are implemented.

Exemplarily, the computer program 62 may be divided into one or more modules/units, and the one or more modules/units are stored in the memory 61 and executed by the processor 60 to complete the this invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program 62 in the terminal device 6 . For example, the computer program 62 can be divided into an acquisition module, a determination module, and a control module, and the specific functions of each module are as follows:

The acquisition module is used to acquire multiple supply-demanding stations according to the historical electricity load of multiple supply-demanding stations corresponding to the fault-occurring location when the fault location is not adjacent to the tie switch of the distribution network. The total amount of the first transfer load of the station area at the time of transfer;

The determining module is used to dynamically evaluate the score according to the pre-acquired difference in power consumption of the station area that needs to be transferred at the time of transfer when the redundant power corresponding to the tie switch is less than the total amount of the first transfer load. Determine the station area to be removed in the transfer station area; wherein, the total amount of the second transfer load of the station area to be transferred except the station area to be removed in the plurality of station areas to be transferred is less than or equal to the redundant power;

The control module is used to cut off the table area to be removed, and close the liaison switch, so as to perform transfer recovery for the transfer table area other than the table area to be removed among the plurality of transfer table areas.

The terminal device 6 may be a computing device such as a desktop computer, a notebook, a palmtop computer, and a cloud server. The terminal device may include, but is not limited to, the processor 60 and the memory 61 . Those skilled in the art can understand that FIG. 6 is only an example of the terminal device 6, and does not constitute a limitation on the terminal device 6, and may include more or less components than the one shown, or combine some components, or different components For example, the terminal device may further include an input and output device, a network access device, a bus, and the like.

The so-called processor 60 may be a central processing unit (Central Processing Unit, CPU), and may also be other general-purpose processors, digital signal processors (Digital Signal Processors, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), Field-Programmable Gate Array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 61 may be an internal storage unit of the terminal device 6 , such as a hard disk or a memory of the terminal device 6 . The memory 61 may also be an external storage device of the terminal device 6, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) equipped on the terminal device 6. card, flash card (Flash Card) and so on. Further, the memory 61 may also include both an internal storage unit of the terminal device 6 and an external storage device. The memory 61 is used to store the computer program and other programs and data required by the terminal device. The memory 61 can also be used to temporarily store data that has been output or will be output.

Those skilled in the art can clearly understand that, for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. Module completion, that is, dividing the internal structure of the device into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment may be integrated in one processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit, and the above-mentioned integrated units may adopt hardware. It can also be realized in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing from each other, and are not used to limit the protection scope of the present application. For the specific working processes of the units and modules in the above-mentioned system, reference may be made to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the foregoing embodiments, the description of each embodiment has its own emphasis. For parts that are not described or described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of the present invention.

In the embodiments provided by the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other manners. For example, the apparatus/terminal device embodiments described above are only illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units. Or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

The integrated modules/units, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the present invention can implement all or part of the processes in the methods of the above embodiments, and can also be completed by instructing relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium. When the program is executed by the processor, the steps of the foregoing method embodiments can be implemented. Wherein, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file or some intermediate form, and the like. The computer-readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM, Read-Only Memory) , Random Access Memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content contained in the computer-readable media may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction, for example, in some jurisdictions, according to legislation and patent practice, the computer-readable media Electric carrier signals and telecommunication signals are not included.

The above-mentioned embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it is still possible to implement the foregoing implementations. The technical solutions described in the examples are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the within the protection scope of the present invention.

Claims (10)

1. A power distribution network fault recovery method is characterized by comprising the following steps:

under the condition that the fault occurrence position is not adjacent to a contact switch of the power distribution network, acquiring a first transfer load total amount of a plurality of transfer-required distribution areas at the transfer moment according to historical electricity utilization load amounts of the plurality of transfer-required distribution areas corresponding to the fault occurrence position;

when the redundant electric quantity corresponding to the interconnection switch is smaller than the total first transfer load, determining a station area to be cut in the plurality of station areas needing transfer according to a power utilization difference dynamic evaluation score of the station areas needing transfer at the transfer moment, wherein the power utilization difference dynamic evaluation score is acquired in advance; wherein, the total amount of second transfer load of the transfer-required areas except the areas to be cut out in the plurality of transfer-required areas is less than or equal to the redundant electric quantity;

and cutting off the to-be-cut off transformer areas, and closing the interconnection switch so as to carry out switching recovery on the to-be-switched transformer areas except the to-be-cut off transformer areas in the plurality of to-be-switched transformer areas.

2. The method for recovering the fault of the power distribution network according to claim 1, wherein the obtaining a first total transfer load amount of the plurality of areas requiring transfer at the transfer time according to the historical electricity utilization load amounts of the plurality of areas requiring transfer corresponding to the fault occurrence position comprises:

estimating the transfer load quantity of each transfer-required platform area in the plurality of transfer-required platform areas at the transfer moment according to the historical electricity utilization load quantity;

and determining the sum of the transfer load amount of each transfer-required platform area in the plurality of transfer-required platform areas as the first transfer load total amount.

3. The method for recovering from a fault in an electric power distribution network according to claim 2, wherein estimating an amount of transfer load of each of the plurality of areas requiring transfer at the transfer time based on the historical amount of power consumption load comprises:

acquiring N electricity utilization load quantities of a target platform area in the same day before a fault occurs; the target transformer area is any one of the plurality of transformer areas needing to be transformed;

acquiring X electricity utilization load quantities before the transfer time in M days before the target transformer area and Y electricity utilization load quantities after the transfer time in M days before the target transformer area;

determining the maximum value of the N electric load quantities, the M multiplied by X electric load quantities and the M multiplied by Y electric load quantities as the transfer supply electric load quantity of the target platform area at the transfer supply time;

wherein M, N, X and Y are both integers greater than zero.

4. The method for recovering the power distribution network fault according to claim 1, wherein the determining, according to the power utilization difference dynamic evaluation score of the power distribution network area needing to be transferred at the transfer time, the power distribution network area to be removed from the plurality of power distribution network areas needing to be transferred comprises:

sequencing the plurality of areas needing to be transferred according to the sequence of the power utilization difference dynamic evaluation scores from small to large;

determining the region needing to be transferred with the sequence number as a first target sequence number in the plurality of regions needing to be transferred; the third total transfer load of all the areas needing to be transferred and provided with the sequence numbers behind the first target sequence number is less than or equal to the redundant electric quantity, and the fourth total transfer load of all the areas needing to be transferred and provided with the sequence numbers behind the first target sequence number and the areas needing to be transferred and provided with the sequence numbers behind the first target sequence number is greater than or equal to the redundant electric quantity;

and determining all the areas needing transferring and with the sequence numbers behind the first target sequence number as the areas needing to be removed.

5. The method for recovering the power distribution network fault according to claim 1, wherein the determining, according to the power utilization difference dynamic evaluation score of the power distribution network area needing to be transferred at the transfer time, the power distribution network area to be removed from the plurality of power distribution network areas needing to be transferred comprises:

sequencing the plurality of areas needing to be transferred according to the sequence of the dynamic evaluation scores of the power utilization difference from large to small;

determining the region needing to be transferred with the serial number of a second target serial number in the plurality of regions needing to be transferred; the total fifth transfer load of all the areas needing to be transferred and provided with the sequence numbers before the second target sequence number is less than or equal to the redundant electric quantity, and the total sixth transfer load of all the areas needing to be transferred and provided with the sequence numbers before the second target sequence number and the areas needing to be transferred and provided with the sequence numbers before the second target sequence number is greater than or equal to the redundant electric quantity;

and determining all the areas needing to be transferred with the serial numbers before the second target serial numbers as the areas needing to be removed.

6. The power distribution network fault recovery method of any one of claims 1 to 5, wherein the power usage difference dynamic evaluation score is obtained based on at least one of a power usage dependent score, a blackout tolerance score, or a historical blackout score.

7. The power distribution network fault recovery method according to claim 6, wherein the power utilization dependence score is obtained based on a corresponding relationship between a difference value between a maximum power utilization load and a minimum power utilization load of the power distribution area needing to be transferred on the previous day and a power utilization load of the power distribution area needing to be transferred at the power transfer time;

the power failure tolerance score is obtained based on the corresponding relation between the average complaint times and the average complaint interval of the transformer area needing to be transferred;

and the historical power failure score is obtained based on the corresponding relation between the power failure times of the power supply area needing to be transferred in a preset time period and the total power failure number of the whole line.

8. The method for recovering the power distribution network fault according to claim 6, wherein before the determining, according to the power utilization difference dynamic evaluation score of the power distribution network area needing to be transferred at the transfer time, an area to be removed from the plurality of power distribution network areas needing to be transferred according to the pre-obtained power utilization difference dynamic evaluation score, the method further comprises:

acquiring the electricity utilization dependence value, the power failure tolerance value and the historical power failure value of the region needing to be transferred at the transfer moment;

and determining the sum of the power utilization dependence score and the multiplication value of a first preset weight, the multiplication value of the power failure tolerance score and a second preset weight, and the multiplication value of the historical power failure score and a third preset weight as the power utilization difference dynamic evaluation score of the power-to-be-transferred station area at the power transfer time.

9. A power distribution network fault recovery device, comprising:

the acquisition module is used for acquiring the total amount of the first transfer load of the plurality of areas needing transfer according to the historical electricity utilization load of the plurality of areas needing transfer and corresponding to the fault occurrence position when the fault occurrence position is not adjacent to the interconnection switch of the power distribution network;

the determining module is used for determining a station area to be cut in the plurality of station areas needing to be transferred according to the power utilization difference dynamic evaluation value of the pre-acquired station areas needing to be transferred at the transfer moment when the redundant power amount corresponding to the interconnection switch is smaller than the first transfer load total amount; the total amount of second transfer load of the transfer-required areas except the areas to be cut out in the plurality of transfer-required areas is less than or equal to the redundant electric quantity;

and the control module is used for cutting off the to-be-cut transformer area and closing the contact switch so as to carry out switching recovery on the to-be-switched transformer area except the to-be-cut transformer area in the plurality of to-be-switched transformer areas.

10. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any of claims 1 to 8 when executing the computer program.

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