CN113868589A - Elastic power distribution network multipoint fault first-aid repair method and system considering emergency resource scheduling - Google Patents

Elastic power distribution network multipoint fault first-aid repair method and system considering emergency resource scheduling Download PDF

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CN113868589A
CN113868589A CN202111153615.4A CN202111153615A CN113868589A CN 113868589 A CN113868589 A CN 113868589A CN 202111153615 A CN202111153615 A CN 202111153615A CN 113868589 A CN113868589 A CN 113868589A
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陈健
姜心怡
张文
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Abstract

The disclosure belongs to the technical field of power distribution network optimization, and provides an elastic power distribution network multipoint fault first-aid repair method and system considering emergency resource scheduling, wherein the method comprises the following steps: step S01: acquiring fault node position information and load node index weight, judging whether the power distribution network completely recovers power supply, if so, turning to the step S03, otherwise, turning to the step S02; step S02: performing network reconstruction of the power distribution network by taking the maximum power restoration load as a target until power supply is completely restored, and turning to step S03; step S03: judging whether the fault node in the power distribution network is completely recovered, if so, ending the first-aid repair, otherwise, turning to the step S04; step S04: and (4) repairing the fault node by taking the highest restoring force of the power distribution network as a target until the fault node is completely repaired, and finishing the first-aid repair.

Description

Elastic power distribution network multipoint fault first-aid repair method and system considering emergency resource scheduling
Technical Field
The disclosure belongs to the technical field of power distribution network optimization, and particularly relates to an elastic power distribution network multipoint fault first-aid repair method and system considering emergency resource scheduling.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
In recent years, as the frequency of natural disasters increases year by year, it is not easy to construct a resilient distribution network. In order to improve the elasticity of the power distribution network, the important load power supply of the power distribution network can be quickly, safely and reliably recovered through the cooperative scheduling optimization of various emergency resources after the power distribution network fails, and the method has very important practical significance. As an important infrastructure related to national security and national economic life lines, an electric power system is required to satisfy not only reliable operation in a normal environment but also maintenance of necessary functions in the event of an extreme disaster. Under the background, the construction of resilient power grids is becoming a national strategy for the development of governments. Emergency repair resources and emergency repair teams of the power distribution network are used as key parts for repairing the power distribution network structure, and quick and reasonable scheduling arrangement is very important for quickly and safely recovering important load power supply and quickly recovering a grid structure in normal operation of the power distribution network. Therefore, the research of the elastic distribution network multipoint fault emergency repair strategy considering the emergency resource scheduling has important practical significance.
At present, for the problem of recovery after disaster of an elastic power distribution network, researchers at home and abroad respectively carry out a large amount of fault researches on the aspects of fault positioning, network reconstruction, emergency repair plans, different recovery measures after disaster, strategy optimization and the like. In the research of the recovery after disaster of the power distribution network, the existing research work of domestic and foreign research scholars can be divided into emergency resource and emergency repair team scheduling, network reconstruction, comprehensive energy support, mobile energy storage optimization scheduling, recovery after disaster strategy optimization, emergency repair plans and the like. The optimization scheduling of emergency resources and emergency maintenance teams plays a vital role in repairing the power distribution network faults, and other post-disaster recovery measure strategies can only recover important load power supply in a short time and provide maintenance time for the power distribution network faults. Although the existing research is relatively comprehensive, most of the existing research only considers the scheduling schemes of emergency maintenance teams and emergency resources, the optimal scheduling scheme cannot be obtained, the recovery measures after emergency disaster are considered to be single, and the maximum range recovery power supply of the power distribution network in the dynamic process of maintenance cannot be guaranteed.
Therefore, intensive research needs to be carried out on the elastic distribution network multipoint fault emergency repair strategy considering emergency resource scheduling.
Disclosure of Invention
In order to solve the problems, the elastic distribution network multipoint fault emergency repair method and system considering emergency resource scheduling are provided in the disclosure, load power supply can be quickly, safely and reliably recovered to the maximum, and the multipoint faults of the distribution network can be quickly repaired by orderly scheduling emergency resources and maintenance teams through a reasonable and effective scheduling strategy.
According to some embodiments, a first scheme of the disclosure provides an elastic distribution network multipoint fault first-aid repair method and system considering emergency resource scheduling, and the following technical scheme is adopted:
an elastic distribution network multipoint fault first-aid repair method considering emergency resource scheduling comprises the following steps:
step S01: acquiring fault node position information and load node index weight, judging whether the power distribution network completely recovers power supply, if so, turning to the step S03, otherwise, turning to the step S02;
step S02: performing network reconstruction of the power distribution network by taking the maximum power restoration load as a target until power supply is completely restored, and turning to step S03;
step S03: judging whether the fault node in the power distribution network is completely recovered, if so, ending the first-aid repair, otherwise, turning to the step S04;
step S04: and (4) repairing the fault node by taking the highest restoring force of the power distribution network as a target until the fault node is completely repaired, and finishing the first-aid repair.
As a further technical limitation, in step S01, the load node index weight includes a load importance, a load amount of each node, an importance of topology reconstruction, and a repair time length level.
As a further technical limitation, in step S02, when the power distribution network is not completely restored, it is indicated that there is a fault in the power distribution network, and it is necessary to adjust a change in the operation configuration of the power distribution network by network reconfiguration of the power distribution network, and it is prioritized to restore the power supply to an important load in the power distribution network in consideration of the importance level of the load node in the power distribution network.
Further, in step S02, in the network reconfiguration process of the power distribution network, the concept of graph theory is introduced to ensure the radial topology of the power distribution network, and the following two conditions need to be satisfied:
first, each subgraph contains all nodes;
second, the total number of lines equals the total number of nodes minus the number of subgraphs.
As a further technical limitation, in step S02, the objective function of network reconstruction of the distribution network is to maximize the restoration of the power supply load, and the constraints are distribution network power flow constraints and distribution network reconstruction constraints, and the distribution network power flow model constraints adopt a linearized Distflow power flow model.
As a further technical limitation, in step S04, the objective function of repairing the failed node is to improve the recovery capability of the power distribution network after power supply is recovered, and comprehensively consider the load importance, the load amount, the topology importance of the power distribution network, and the repair time.
As a further technical limitation, in step S04, the repairing of the failed node includes the following constraints:
in the same time period, the number of emergency maintenance teams distributed to each node cannot be larger than the maximum number of emergency maintenance teams;
the fault node allocates resources to meet the resources required by the node;
the number of emergency resources allocated by the fault node is less than the maximum number of resources;
the failed node can be recovered under the condition that the needed emergency resources and the emergency maintenance team are allocated at the same time.
According to some embodiments, a second scheme of the disclosure provides an elastic distribution network multipoint fault first-aid repair system considering emergency resource scheduling, and the following technical scheme is adopted:
an elastic distribution network multipoint fault first-aid repair system considering emergency resource scheduling comprises:
the acquisition module is used for acquiring fault node position information and load node index weight;
the first judgment module is used for judging whether the power distribution network completely recovers power supply, and if the power distribution network does not completely recover power supply, network reconstruction of the power distribution network is carried out by taking the maximum power supply recovery load as a target until the power supply is completely recovered;
and the second judgment module is used for judging whether the fault node in the power distribution network is completely repaired or not, and if the fault node is not completely repaired, repairing the fault node by taking the highest restoring force of the power distribution network as a target until the fault node is completely repaired, and finishing the first-aid repair.
According to some embodiments, a third aspect of the present disclosure provides a computer-readable storage medium, which adopts the following technical solutions:
a computer readable storage medium, having stored thereon a program which, when being executed by a processor, carries out the steps of the method for resilient distribution network multipoint fault emergency repair with consideration of emergency resource scheduling according to the first aspect of the present disclosure.
According to some embodiments, a fourth aspect of the present disclosure provides an electronic device, which adopts the following technical solutions:
an electronic device comprises a memory, a processor and a program stored on the memory and running on the processor, wherein the processor executes the program to realize the steps of the method for elastic distribution network multipoint fault emergency repair considering emergency resource scheduling according to the first aspect of the disclosure.
Compared with the prior art, the beneficial effect of this disclosure is:
the method comprises the steps that after-disaster recovery is carried out on the power distribution network by combining network reconstruction with emergency material and maintenance team scheduling measures until the power distribution network is recovered to an original stable operation state; in the emergency resource scheduling, the multi-index weight of a fault node is fully considered; under the condition that emergency resources in the power distribution network are limited, the combination of the two measures can recover all load power supply more quickly compared with the condition that no network reconstruction exists. The method can quickly, safely and reliably recover the load power supply to the maximum extent in the multipoint faults of the power distribution network, and can orderly schedule emergency resources and maintain teams through a reasonable and effective scheduling strategy to quickly restore the multipoint faults of the power distribution network.
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The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.
Fig. 1 is a flowchart of a resilient distribution network multipoint fault emergency repair method considering emergency resource scheduling in an embodiment of the present disclosure;
fig. 2 is a coupling relationship diagram of an elastic distribution network multipoint fault first-aid repair method considering emergency resource scheduling in a time dimension in the first embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a single commodity logistics model in accordance with one embodiment of the present disclosure;
FIG. 4 is a network architecture diagram of an exemplary power distribution network region in accordance with an embodiment of the present disclosure;
fig. 5 is a block diagram of a resilient distribution network multipoint fault emergency repair system in consideration of emergency resource scheduling in the second embodiment of the present disclosure;
the specific implementation mode is as follows:
the present disclosure is further described with reference to the following drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.
Example one
The first embodiment of the disclosure introduces a resilient distribution network multipoint fault first-aid repair method considering emergency resource scheduling.
After a fault occurs, inputting a fault node information position and each index weight influencing each load node, wherein the index weights respectively comprise load importance, load quantity of each node, importance of topology reconstruction and repair time length grade; judging whether the power supply in the power distribution network is completely recovered, if not, recovering the load power supply in the power distribution network by adopting network reconstruction maximization, then rapidly repairing important load nodes by adopting emergency maintenance team and emergency material scheduling, and judging whether the load is completely recovered again until all the loads are completely recovered; and judging whether the fault node in the power distribution network is completely repaired or not, and if not, repairing the fault node through emergency maintenance team and emergency material scheduling until all faults in the power distribution network are repaired.
As shown in fig. 1, a resilient distribution network multipoint fault emergency repair method considering emergency resource scheduling includes the following steps:
step S01: acquiring fault node position information and load node index weight, judging whether the power distribution network completely recovers power supply, if so, turning to the step S03, otherwise, turning to the step S02;
step S02: performing network reconstruction of the power distribution network by taking the maximum power restoration load as a target until power supply is completely restored, and turning to step S03;
step S03: judging whether the fault node in the power distribution network is completely recovered, if so, ending the first-aid repair, otherwise, turning to the step S04;
step S04: and (4) repairing the fault node by taking the highest restoring force of the power distribution network as a target until the fault node is completely repaired, and finishing the first-aid repair.
As shown in the time dimension coupling relationship diagram of fig. 2, each node load has its fixedly required materials, and the condition that a node is repaired should satisfy the requirement of an emergency maintenance team and the emergency materials required by the node are simultaneously distributed. The order in which the load nodes are repaired takes the following principles into full consideration:
(1) preferentially distributing resources to important load nodes;
(2) preferentially distributing resources to nodes with larger load;
(3) the resources are preferentially distributed to nodes which are important for recovering the topology of the power distribution network;
(4) and preferentially distributing the resources to the nodes with shorter fault first-aid repair time.
In recent years, as the management system of the power distribution network is upgraded, the probability of fault disaster is increased. Therefore, in order to ensure the reliability of power supply and improve the satisfaction degree of power utilization of users, the emergency repair work of the power distribution network adopts a standardized and streamlined operation mode. The emergency repair tasks and the emergency repair resources are classified, emergency repair teams are configured in a standardized mode, when faults occur in the power distribution network, only one or more emergency repair teams are required to be dispatched, other necessary emergency repair resources are equipped according to the type of the emergency repair tasks, and the following assumptions are made before the dispatching models of emergency materials and emergency repair teams are built in the embodiment:
(1) the fault node is equal to the fault of a line accessed to the node, and the fault node is equal to the fault of the line accessed to the node in modeling;
(2) the type of each emergency repair task is determined, and the corresponding type of required emergency resources is also known;
(3) each first-aid repair task is executed by one first-aid repair team;
(4) the number of vehicles and infrastructure of each emergency repair team are the same, the working efficiency is also the same, but one emergency repair team can only repair one fault at the same time.
The following detailed description is developed in conjunction with fig. 4:
network reconfiguration section
After a fault occurs, the power distribution network firstly adjusts the change of the operation structure of the power distribution network through network reconstruction, and the important load power supply in the power distribution network is recovered preferentially by considering the important level of the load node in the power distribution network.
In the network reconstruction process, in order to ensure the radial topological structure of the power distribution network, the concept in the graph theory needs to be introduced, and for a radial network, the sufficient necessary condition for ensuring the radial network to be the radial structure is to meet 2 conditions:
1) each subgraph comprises 1 node in the subgraph;
2) the total number of lines equals the number of nodes minus the number of subgraphs.
If condition 1 is to be satisfied), the sub-graph node connection constraint can be represented using a single commodity logistics model according to the principle in graph theory.
The principle of the single commodity flow model used in this example is shown in fig. 3, in which o represents a node and □ represents a commodity.
The principle of the single commodity logistics model is as follows: for the situation that the power distribution network is separated from a main power network after a fault occurs, the power distribution network is divided into sub power distribution networks according to the number of power sources in the power distribution network, each sub power distribution network comprises 1 power source node serving as a transmitter, and other nodes serve as receivers for load nodes. In each sub-grid, 1 commodity is transmitted by the transmitter to each receiver to ensure that each node is connected to the sub-grid. The single commodity logistics model is represented as follows:
Figure BDA0003287871620000101
Figure BDA0003287871620000102
Figure BDA0003287871620000103
Figure BDA0003287871620000104
Figure BDA0003287871620000105
Wi≥1 i∈iDG (6)
wherein f isk,tThe commodity flow of the commodity on the k line at the moment t; i.e. iDGInstalling nodes for the distributed power supply; wiThe total amount of commodities which can be sent by the source node in the sub-distribution network; w is 1 positive number large enough.
The condition 2) satisfying the radial network structure can be represented by formula (7):
Figure BDA0003287871620000106
wherein alpha isk,tFor actual connection states, alpha, of lines generated in the distribution network k,t1 denotes that at time t, nodes i, j communicate with each other via link k, and αk,t0 represents that the line k between the nodes i and j is disconnected at the moment t; n is the number of nodes in the power distribution network; n is a radical ofDGThe power distribution network comprises the number of power supplies, and the power supplies in the power distribution network mainly comprise a fan, a photovoltaic, a gas turbine, a mobile power supply and the like.
Aiming at the characteristics of multipoint failure time of a power distribution network and electric power materials required for emergency repair, a perfect electric power material guarantee system is established, so that the supply requirements of the electric power materials can be met in the emergency activities of the power grid, and the faults can be quickly repaired. The key factors to be considered in the emergency repair process comprise emergency repair resource allocation, the number of emergency repair teams, fault types, emergency repair sequence and the like. The emergency repair resources comprise professional teams and various large-scale tools such as a mobile power supply, a generator, a crane, a wire, a tower, a cable, a line and a secondary system, and emergency resources such as required tools and instruments and emergency repair teams with corresponding technical advantages and special travel are configured at the same load node. Under the condition that emergency resources for rush repair in a power distribution network are limited, the coordination scheduling of the emergency resources and the emergency team needs to fully consider the coordination scheduling of the emergency resources and the emergency team, and the emergency repair of multi-point faults is guaranteed to be completed reasonably and efficiently. If the emergency repair resource set is P, the emergency repair team set is M and the fault set is U, the direct allocation function of the emergency repair resources and the fault task can be established as follows:
Figure BDA0003287871620000111
Figure BDA0003287871620000112
wherein R isU-P(u, p) represents a rush repair resource allocation function; rU-M(u, m) is a distribution function of the emergency maintenance team; p is 1,2, …, and P is the type of emergency repair resource; m is 1,2, …, M is the number of first-aid repair teams, U is 1,2, …, U is the number of failures.
The cooperative relationship between the emergency resources and the emergency maintenance team is required to satisfy the following relationship, that is, after the same node is simultaneously allocated with the resources and the emergency maintenance team, the node can be repaired:
Figure BDA0003287871620000121
the objective function of network reconstruction is to maximize the recovered power supply load, and the expression is as follows:
Figure BDA0003287871620000122
wherein f is1Reconstructing a partial objective function for the network; w is aiIs the importance of the load of node i.
The constraint conditions of the network reconstruction part mainly comprise power flow constraint of the power distribution network and constraint of the network reconstruction part of the power distribution network. The power distribution network power flow model adopts a linearized Distflow power flow model, and the formula is shown in the formulas (12) to (21):
Figure BDA0003287871620000123
Figure BDA0003287871620000124
Figure BDA0003287871620000125
Figure BDA0003287871620000126
Figure BDA0003287871620000127
0≤δi,t≤1 (17)
Figure BDA0003287871620000128
Figure BDA0003287871620000129
0≤PDG,i,t≤PDG,max,i0≤QDG,i,t≤QDG,max,i (20)
Psub,i,t≥0Qsub,i,t≥0 (21)
wherein the content of the first and second substances,
Figure BDA00032878716200001210
n is a node set in the power distribution network; t is a time set; l is a line set in the power distribution network; psub,i,tAnd Qsub,i,tThe active power and the reactive power output by the transformer substation of the node i at the moment t are respectively; pDG,i,tAnd QDG,i,tThe active power and the reactive power output by the distributed power supply of the node i at the moment t respectively; pch,i,tAnd Pdis,i,tThe energy storage system of the node i is respectively used for charging and discharging active power at the moment t; qch,i,tAnd Qdis,i,tThe energy storage systems which are respectively nodes i have charging and discharging reactive power at the time t; deltai,tRestoring the coefficient for the load of the node i at the time t; plk,tAnd Qlk,tActive and reactive power respectively flowing in the line k at the moment tPower; pload,i,tAnd Qload,i,tRespectively an active demand load and a reactive demand load of the node i at the moment t; u shapei,tThe voltage amplitude of the node i at the time t is shown; r iskAnd xkResistance and reactance of line k, respectively;
Figure BDA0003287871620000131
wherein alpha isk,tFor actual connection states, alpha, of lines generated in the distribution networkk,t1 denotes that at time t, nodes i, j communicate with each other via link k, and αk,t0 represents that the line k between the nodes i and j is disconnected at the moment t; k is a sufficiently large positive number;Uand
Figure BDA0003287871620000132
respectively the minimum value and the maximum value of the node voltage in the power distribution network;
Figure BDA0003287871620000133
maximum apparent power on line k; pDG,max,iAnd QDG,max,iThe maximum active power and the reactive power of the distributed power supply installed for node i, respectively.
Equations (12) - (13) respectively represent that all nodes satisfy active power and reactive power balance; equations (14) to (15) indicate that α is when the line is in the closed statei,tWhen the line is in the disconnection state, alphai,tWhen the voltage is 0 and K is a positive number which is large enough, the circuit can be disconnected arbitrarily, and the node voltages cannot influence each other; equation (16) represents the limit of the voltage amplitude; equation (17) shows that the limit of the recovered power supply coefficient of the load is [0,1 ]]Internal; equations (18) and (19) respectively represent the real and reactive power limiting the line flow to 0 when the line is disconnected; formula (20) limits the active and reactive power generated by distributed power sources installed in the power distribution network; equation (21) limits the active and reactive power emitted by the substation nodes connected to the distribution network.
First-aid repair team and emergency material scheduling aspect (repairing fault node)
Reasonable and effective distribution of emergency maintenance teams and resources aims to improve the maximum restoring force of the power distribution network after power supply is restored. In the embodiment, four factors, namely the load importance, the load amount, the distribution network topology importance and the repair time, are comprehensively considered when the first repair node is selected. The objective function is determined by taking into account four factors as shown below:
Figure BDA0003287871620000141
wherein, ω isuRepresenting the node load importance weight of the fault node u;
Figure BDA0003287871620000142
representing the weight of the node load size; zetauRepresenting the topological connection importance weight of a fault node u in the power distribution network; chi shapeuRepresenting the weight of the transport time length from the emergency resource to the fault node u; Π is the 0-1 variable for whether fault node u is repaired.
The constraints for repairing the failed node are as follows:
(1) in the same time period, the number of emergency maintenance teams distributed to each node cannot be larger than the maximum number of emergency maintenance teams, namely
Figure BDA0003287871620000143
Wherein R isU-MA demand variable of the fault node u to the emergency maintenance team, and R if the demand variable is requiredU-M1, whereas RU-M＝0。
(2) The fault node allocates resources to meet the resources required by the node:
RU-P≤rU-P (24)
wherein r isU-PThe required number of p-th class resources for failed node i.
(3) The number of emergency resources allocated by the fault node is less than the maximum number of resources;
Figure BDA0003287871620000151
wherein J is the maximum number of emergency resources p.
(4) The fault node u can be recovered under the condition that the required emergency resources and the emergency maintenance team are distributed at the same time;
Figure BDA0003287871620000152
wherein, due to RU-MAnd RU-PAre all binary variables.
In the formula (26) of the present embodiment, a new auxiliary variable linearization model is introduced to deal with the nonlinear problem. If C is a × B, constraints shown by the formulas (27) and (28) may be added:
0≤C≤A (27)
A+B-1≤C≤B (28)
in the elastic distribution network multipoint fault emergency repair method considering emergency resource scheduling introduced in this embodiment, an elastic distribution network multipoint fault emergency repair strategy of emergency resource scheduling is mainly considered, and power supply is recovered to the greatest extent possible. After the power distribution network has multi-point faults, firstly, adopting network reconstruction to recover load power supply to the maximum extent; secondly, based on the existing network structure, scheduling of emergency resources and emergency maintenance teams is carried out, personnel and material matching is guaranteed, and finally network reconstruction and scheduling are carried out again based on repaired nodes until the power distribution network returns to a normal operation state. In the embodiment, two post-disaster recovery measures of network reconstruction, emergency maintenance team and emergency material scheduling and allocation are considered, the cooperative recovery advantages of two strategies in the time dimension are fully utilized, the power supply range is expanded to the maximum extent through the network reconstruction, the emergency maintenance team performs priority selection on nodes with large weights according to the load importance degree to perform repair, the power supply range of the power distribution network is expanded through the network reconstruction once through the repair, and the cyclic recovery is performed until the fault of the power distribution network is completely recovered.
Example two
The second embodiment of the disclosure introduces an elastic distribution network multipoint fault emergency repair system considering emergency resource scheduling, and adopts the introduced elastic distribution network multipoint fault emergency repair method of emergency resource scheduling.
Fig. 5 shows a system for resilient distribution network multipoint fault emergency repair in consideration of emergency resource scheduling, which includes:
the acquisition module is used for acquiring fault node position information and load node index weight;
the first judgment module is used for judging whether the power distribution network completely recovers power supply, and if the power distribution network does not completely recover power supply, network reconstruction of the power distribution network is carried out by taking the maximum power supply recovery load as a target until the power supply is completely recovered;
and the second judgment module is used for judging whether the fault node in the power distribution network is completely repaired or not, and if the fault node is not completely repaired, repairing the fault node by taking the highest restoring force of the power distribution network as a target until the fault node is completely repaired, and finishing the first-aid repair.
The detailed steps are the same as those of the elastic distribution network multipoint fault first-aid repair method considering emergency resource scheduling provided in the first embodiment, and are not described herein again.
EXAMPLE III
The third embodiment of the disclosure provides a computer-readable storage medium.
A computer readable storage medium, on which a program is stored, which when executed by a processor, implements the steps in the method for resilient distribution network multipoint fault emergency repair considering emergency resource scheduling according to the first embodiment of the present disclosure.
The detailed steps are the same as those of the elastic distribution network multipoint fault first-aid repair method considering emergency resource scheduling provided in the first embodiment, and are not described herein again.
Example four
The fourth embodiment of the disclosure provides an electronic device.
An electronic device comprises a memory, a processor and a program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the steps of the elastic distribution network multipoint fault first-aid repair method considering emergency resource scheduling according to the first embodiment of the disclosure.
The detailed steps are the same as those of the elastic distribution network multipoint fault first-aid repair method considering emergency resource scheduling provided in the first embodiment, and are not described herein again.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.

Claims (10)

1. An elastic distribution network multipoint fault first-aid repair method considering emergency resource scheduling is characterized by comprising the following steps:
step S01: acquiring fault node position information and load node index weight, judging whether the power distribution network completely recovers power supply, if so, turning to the step S03, otherwise, turning to the step S02;
step S02: performing network reconstruction of the power distribution network by taking the maximum power restoration load as a target until power supply is completely restored, and turning to step S03;
step S03: judging whether the fault node in the power distribution network is completely recovered, if so, ending the first-aid repair, otherwise, turning to the step S04;
step S04: and (4) repairing the fault node by taking the highest restoring force of the power distribution network as a target until the fault node is completely repaired, and finishing the first-aid repair.
2. The method for rush repair of the multipoint fault of the elastic distribution network considering the emergency resource scheduling as claimed in claim 1, wherein in step S01, the load node index weight includes load importance, load amount of each node, importance of topology reconstruction and repair time length level.
3. The method for rush repair of the multipoint fault of the power distribution network considering the emergency resource scheduling as claimed in claim 1, wherein in step S02, when the power distribution network does not completely recover power, it indicates that there is a fault in the power distribution network, and it is necessary to adjust the change of the operation structure of the power distribution network through network reconfiguration of the power distribution network, and it is prioritized to recover the power supply of the important load in the power distribution network considering the importance level of the load node in the power distribution network.
4. The method for rush-repair of the multipoint fault of the elastic power distribution network considering the emergency resource scheduling as claimed in claim 3, wherein in step S02, in the network reconfiguration process of the power distribution network, the concept of graph theory is introduced to ensure that the radial topology structure of the power distribution network meets the following two conditions:
first, each subgraph contains all nodes;
second, the total number of lines equals the total number of nodes minus the number of subgraphs.
5. The elastic distribution network multipoint fault emergency repair method considering emergency resource scheduling as claimed in claim 1, wherein in step S02, the objective function of network reconfiguration of the distribution network is to maximize restoration of power supply load, the constraint conditions are distribution network power flow constraint and distribution network reconfiguration constraint, and the distribution network power flow model constraint adopts a linearized Distflow power flow model.
6. The method for rush repair of the multipoint fault of the elastic power distribution network considering the emergency resource scheduling as claimed in claim 1, wherein in step S04, the objective function for repairing the fault node is to improve the recovery capability of the power distribution network after power supply is restored, and comprehensively considers the load importance, the load capacity, the topology importance of the power distribution network and the repair time.
7. The method for the multi-point fault emergency repair of the elastic distribution network considering the emergency resource scheduling as claimed in claim 1, wherein in step S04, the repairing of the fault node includes the following constraints:
in the same time period, the number of emergency maintenance teams distributed to each node cannot be larger than the maximum number of emergency maintenance teams;
the fault node allocates resources to meet the resources required by the node;
the number of emergency resources allocated by the fault node is less than the maximum number of resources;
the failed node can be recovered under the condition that the needed emergency resources and the emergency maintenance team are allocated at the same time.
8. The utility model provides a consider elasticity distribution network multiple spot trouble rush-repair system of emergency resource scheduling which characterized in that includes:
the acquisition module is used for acquiring fault node position information and load node index weight;
the first judgment module is used for judging whether the power distribution network completely recovers power supply, and if the power distribution network does not completely recover power supply, network reconstruction of the power distribution network is carried out by taking the maximum power supply recovery load as a target until the power supply is completely recovered;
and the second judgment module is used for judging whether the fault node in the power distribution network is completely repaired or not, and if the fault node is not completely repaired, repairing the fault node by taking the highest restoring force of the power distribution network as a target until the fault node is completely repaired, and finishing the first-aid repair.
9. A computer readable storage medium, on which a program is stored which, when being executed by a processor, carries out the steps of the method for resilient distribution network multipoint fault emergency repair with consideration of emergency resource scheduling according to any of claims 1-7.
10. An electronic device comprising a memory, a processor and a program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method for resilient distribution network multipoint fault emergency repair considering emergency resource scheduling according to any of claims 1-7 when executing the program.
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