A distribution network emergency repair and restoration method considering the impact of traffic network

Abstract

The present invention discloses a distribution network emergency repair and recovery method taking into account the influence of the traffic network, comprising the following steps: 1) establishing a fault line emergency repair and recovery model taking into account the influence of the traffic network; 2) obtaining the information of the traffic network, the distribution network and the emergency power supply vehicle, and inputting it into the fault line emergency repair and recovery model to obtain the distribution network emergency repair and recovery sequence; the distribution network emergency repair and recovery sequence includes the traffic network repair sequence, the distribution network emergency repair sequence and the emergency power supply vehicle power supply sequence. The present invention is conducive to reducing the power loss of the distribution network after a power outage, restoring the power supply of the entire network load faster, reducing the impact of the power outage, and reducing the power outage losses.

Description

Technical Field

[0001] The invention relates to the field of power distribution network restoration, in particular to a power distribution network emergency repair and restoration method taking into account the influence of a traffic network. Background Art

[0002] In order to evaluate the ability of distribution networks to resist extreme natural disasters and recover quickly from disasters, a large number of scholars at home and abroad have proposed the concept of resilience and put forward two major means to improve the resilience of distribution networks: pre-disaster prevention measures and post-disaster recovery strategies.

[0003] At present, the research on pre-disaster measures for distribution networks still focuses on planning methods such as transforming high-strength lines and converting overhead lines into underground cables. However, the quality of the grid components currently in use is still within the safe operation range. Large-scale component transformation will consume a large amount of steel, non-ferrous metals, building materials and other materials, and it is very expensive. Therefore, these planning methods are not conducive to energy conservation and carbon reduction, and cannot be implemented on a large scale.

[0004] New energy sources, such as photovoltaic power generation and wind power generation, have been widely used in the post-disaster recovery of distribution networks. New energy sources are widely connected to distribution networks and can be used as emergency power sources for local dispatch, providing support for the rapid restoration of power supply in distribution networks. In addition, the vigorous development of photovoltaic and wind power is of great significance to ensuring my country's power energy supply, energy conservation and emission reduction.

[0005] Fault repair is an important part of post-disaster recovery of distribution network faults and is crucial for quickly restoring load power supply. Optimizing the dispatch of repair resources is conducive to improving the utilization efficiency of limited resources and avoiding waste of resources. However, when extreme events occur, it is not only the power system that is damaged, but the transportation network is also likely to be damaged. The existing distribution network repair resource dispatching scheme does not consider the traffic path issues involved in resource dispatching in detail.

[0006] When it comes to the issue of resource transportation for distribution network emergency repairs, optimizing vehicle routes and shortening vehicle driving distance and time will not only improve resource utilization efficiency, but also reduce vehicle exhaust emissions, achieving the goal of reducing carbon emissions and pollution. Summary of the invention

[0007] The object of the present invention is to provide a method for repairing and restoring a distribution network taking into account the influence of a traffic network, comprising the following steps:

[0008] 1) Establish a fault line repair and restoration model that takes into account the impact of the transportation network;

[0009] The objective function of the fault line repair and restoration model is as follows:

[0010]

[0011] Where A is the number of fault lines that need to be repaired in the distribution network; B is the number of nodes that lose power in the distribution network before the a-th fault line is repaired; C is the number of nodes that lose power supplied by the emergency power supply vehicle; λ b , P b is the load weight coefficient and load amount of the node where the distribution network loses power before repair; c , P c The load weight coefficient and load amount of the power-off node supplied by the emergency power supply vehicle; is the total time required to repair the faulty line at position a, The time it takes for the emergency power supply vehicle to supply power to the cth power supply node.

[0012] The constraint conditions of the fault line repair and restoration model include traffic network road repair vehicle constraints, distribution network fault repair vehicle constraints, and emergency power supply vehicle constraints.

[0013] The constraints of the road repair vehicle in the traffic network are shown in formulas (2)-(4):

[0014]

[0015] In the formula, s f F is the length of the fth road that the traffic network repair vehicle passes from the damaged road at the d-1th location to the dth location. d The number of roads that the traffic network repair vehicle passes from the damaged road at location d-1 to the damaged road at location d; The distance traveled by the traffic network repair vehicle from the damaged road at the d-1th location to the damaged road at the dth location;

[0016]

[0017] In the formula, ε f is the influence coefficient of the road surface damage on the vehicle speed of the fth road, and v is the original speed of the vehicle; The travel time of the traffic network repair vehicle from the damaged road at the d-1th location to the damaged road at the dth location;

[0018]

[0019] In the formula, The time for repairing the damaged road at location d; The total time required to repair the damaged road at location d.

[0020] The constraints of the distribution network fault repair vehicle are shown in formulas (5)-(7):

[0021]

[0022] In the formula, s hH is the length of the hth road that the distribution network repair vehicle passes through from the g-1th fault line to the gth fault line, g is the number of roads that the distribution network repair vehicle passes through from the g-1th fault line to the gth fault line, s g is the length of the road where the fault line at the gth position is located; s g-1 is the length of the road where the fault line at position g-1 is located; is the travel distance of the distribution network repair vehicle from the g-1th fault line to the gth fault line;

[0023]

[0024] In the formula, ε h is the influence coefficient of the road surface damage on the vehicle speed of the hth road; ε g is the influence coefficient of the road surface damage on the vehicle speed where the g-th fault line is located; v is the original speed of the vehicle; is the travel time of the distribution network repair vehicle from the g-1th fault line to the gth fault line;

[0025]

[0026] In the formula, The time it takes for the power grid repair team to wait for the road to be repaired while on their way to the g-th fault line. is the repair time of the g-th fault line, is the closing time of the tie line, Y fault is the fault line set, Y connetion-line is the contact line set; The total time required to repair the g-th fault line.

[0027] When the power distribution network line repair and traffic network repair are carried out simultaneously, the power grid repair team waits for the road repair time on the way to the g-th fault line. As shown below:

[0028]

[0029] In the formula, is the accumulation of repair time of the damaged road at the previous w locations, It is the accumulation of repair time for the faulty line at g-1.

[0030] The emergency power supply vehicle constraints are shown in formulas (9)-(11):

[0031]

[0032] In the formula, s n N is the length of the nth road that the emergency power supply vehicle passes from the m-1th power supply node to the mth node,m The number of roads that the repair vehicle passes through from the faulty line at location m-1 to the faulty line at location m; is the travel distance of the emergency power supply vehicle from the m-1 power supply node to the mth power supply node;

[0033]

[0034] In the formula, ε n is the influence coefficient of the road surface damage on the vehicle speed of the nth road, and v is the original speed of the vehicle; is the travel time of the emergency power supply vehicle from the m-1th power supply node to the mth power supply node;

[0035]

[0036] In the formula, Z m The set 0 of faulty lines during the period from when the power supply of the grid is restored to the m-1th power supply node to when the power supply of the grid is restored to the mth power supply node; It represents the time accumulation of the power grid repair vehicle repairing the fault between the power supply nodes of the m-1th and mth power supply vehicles restoring the power supply of the power grid; The time it takes for the emergency power supply vehicle to supply power to the mth power supply node.

[0037] 2) Obtain information on the traffic network, distribution network and emergency power supply vehicle, and input it into the fault line repair and recovery model to obtain the distribution network repair and recovery sequence; the distribution network repair and recovery sequence includes the traffic network repair sequence, the distribution network repair sequence and the emergency power supply vehicle power supply sequence.

[0038] The technical effect of the present invention is unquestionable. The present invention adopts a coordinated dispatching scheme between the distribution network repair team and the transportation network repair team, adopts a newly developed solution method to optimize the repair sequence, and adds emergency power supply vehicles to provide short-term power supply to important loads, which is beneficial to reducing the power loss of the distribution network after a power outage, restoring power supply to the entire network load more quickly, reducing the impact of power outages, and reducing power outage losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a flow chart of the present invention;

[0040] Figure 2 This is a diagram of the failure scenario of the 33-node system in the distribution network;

[0041] Figure 3 This is a fault scenario diagram of a 12-node transportation network system;

[0042] Figure 4 Select a procedure for the model solving method. DETAILED DESCRIPTION

[0043] The present invention is further described below in conjunction with the embodiments, but it should not be understood that the above subject matter of the present invention is limited to the following embodiments. Without departing from the above technical ideas of the present invention, various substitutions and changes are made according to the common technical knowledge and customary means in the art, which should all be included in the protection scope of the present invention.

[0044] Embodiment 1:

[0045] See also Figure 1 , Figure 4 A distribution network emergency repair and restoration method taking into account the impact of the traffic network comprises the following steps:

[0046] 1) Establish a fault line repair and restoration model that takes into account the impact of the transportation network;

[0047] The objective function of the fault line repair and restoration model is as follows:

[0048]

[0049] Where A is the number of fault lines that need to be repaired in the distribution network, including virtual faults and real fault lines; B is the number of nodes that lose power in the distribution network before the a-th fault line is repaired; C is the number of nodes that lose power supplied by the emergency power supply vehicle; λ b , P b is the load weight coefficient and load amount of the node where the distribution network loses power before repair; c , P c The load weight coefficient and load amount of the power-off node supplied by the emergency power supply vehicle; is the total time required to repair the faulty line at position a, The time it takes for the emergency power supply vehicle to supply power to the cth power supply node.

[0050] The constraint conditions of the fault line repair and restoration model include traffic network road repair vehicle constraints, distribution network fault repair vehicle constraints, and emergency power supply vehicle constraints.

[0051] The constraints of the road repair vehicle in the traffic network are shown in formulas (2)-(4):

[0052]

[0053] In the formula, s f F is the length of the fth road that the traffic network repair vehicle passes from the damaged road at the d-1th location to the dth location. d The number of roads that the traffic network repair vehicle passes from the damaged road at location d-1 to the damaged road at location d; The distance traveled by the traffic network repair vehicle from the damaged road at the d-1th location to the damaged road at the dth location;

[0054]

[0055] In the formula, ε f is the influence coefficient of the road surface damage on the vehicle speed of the fth road, and v is the original speed of the vehicle; The travel time of the traffic network repair vehicle from the damaged road at the d-1th location to the damaged road at the dth location;

[0056]

[0057] In the formula, The time for repairing the damaged road at location d; The total time required to repair the damaged road at location d.

[0058] The constraints of the distribution network fault repair vehicle are shown in formulas (5)-(7):

[0059]

[0060] In the formula, s h H is the length of the hth road that the distribution network repair vehicle passes through from the g-1th fault line to the gth fault line, g is the number of roads that the distribution network repair vehicle passes through from the g-1th fault line to the gth fault line, s g is the length of the road where the fault line at the gth position is located; s g-1 is the length of the road where the fault line at position g-1 is located; is the travel distance of the distribution network repair vehicle from the g-1th fault line to the gth fault line;

[0061]

[0062] In the formula, ε h is the influence coefficient of the road surface damage on the vehicle speed of the hth road; ε g is the influence coefficient of the road surface damage on the vehicle speed where the g-th fault line is located; v is the original speed of the vehicle; is the travel time of the distribution network repair vehicle from the g-1th fault line to the gth fault line;

[0063]

[0064] In the formula, The time it takes for the power grid repair team to wait for the road to be repaired while on their way to the g-th fault line. is the repair time of the g-th fault line, is the closing time of the tie line, Y fault is the fault line set, Y connetion-line is the contact line set; The total time required to repair the g-th fault line.

[0065] When the power distribution network line repair and traffic network repair are carried out simultaneously, the power grid repair team waits for the road repair time on the way to the g-th fault line. As shown below:

[0066]

[0067] In the formula, is the accumulation of repair time of the damaged road at the previous w locations, It is the accumulation of repair time for the faulty line at g-1.

[0068] The emergency power supply vehicle constraints are shown in formulas (9)-(11):

[0069]

[0070] In the formula, s n N is the length of the nth road that the emergency power supply vehicle passes from the m-1th power supply node to the mth node, m The number of roads that the repair vehicle passes through from the faulty line at location m-1 to the faulty line at location m; is the travel distance of the emergency power supply vehicle from the m-1 power supply node to the mth power supply node;

[0071]

[0072] In the formula, ε n is the influence coefficient of the road surface damage on the vehicle speed of the nth road, and v is the original speed of the vehicle; is the travel time of the emergency power supply vehicle from the m-1th power supply node to the mth power supply node;

[0073]

[0074] In the formula, Z m The set 0 of faulty lines during the period from when the power supply of the grid is restored to the m-1th power supply node to when the power supply of the grid is restored to the mth power supply node; It represents the time accumulation of the power grid repair vehicle repairing the fault between the power supply nodes of the m-1th and mth power supply vehicles restoring the power supply of the power grid; The time it takes for the emergency power supply vehicle to supply power to the mth power supply node.

[0075] 2) Obtaining the information of the traffic network, distribution network and emergency power supply vehicle, and inputting it into the fault line repair and recovery model, to obtain the distribution network repair and recovery sequence; the distribution network repair and recovery sequence includes the traffic network repair sequence, the distribution network repair sequence and the emergency power supply vehicle power supply sequence.

[0076] Embodiment 2:

[0077] See also Figure 1 , a distribution network emergency repair and restoration method taking into account the impact of the traffic network, including the following contents:

[0078] 1. Objective Function

[0079] Taking into account the impact of the traffic network, emergency power supply vehicles are used for emergency power supply, and the distribution network contact switch is used as a virtual fault point. The objective function of the fault line repair strategy with the goal of minimizing the load loss of the distribution network node is established:

[0080]

[0081] Where A is the number of fault lines that need to be repaired in the distribution network, including virtual faults and real fault lines. B is the number of nodes that lose power in the distribution network before the a-th fault line is repaired, C is the number of nodes that lose power supplied by the emergency power supply vehicle, and λ b is the load weight factor, P b is the load, is the total time required to repair the faulty line at position a, The time it takes for the emergency power supply vehicle to supply power to the cth power supply node.

[0082] 2) Traffic network road repair vehicle constraints

[0083] The distance traveled by the repair vehicle from the damaged road at location d-1 to location d for:

[0084]

[0085] In the formula, s f F is the length of the fth road that the repair vehicle passes from the damaged road at the d-1th location to the dth location. d The number of roads that the repair vehicle passes through from the damaged road at location d-1 to the damaged road at location d.

[0086] The travel time of the repair vehicle from the damaged road at location d-1 to location d for:

[0087]

[0088] In the formula, ε f is the influence coefficient of the pavement damage of the fth road on the vehicle speed, and v is the original speed of the vehicle.

[0089] The total time required for the traffic network road repair team to repair the dth roadblock for:

[0090]

[0091] In the formula, The emergency repair time for the damaged road at location d.

[0092] 3. Constraints on distribution network fault repair vehicles

[0093] The driving distance of the distribution network repair vehicle from the g-1 fault line to the g-th fault line for:

[0094]

[0095] In the formula, s h H is the length of the hth road that the repair vehicle passes from the g-1th fault line to the gth fault line, g is the number of roads that the repair vehicle passes through from the g-1th fault line to the gth fault line, s g is the length of the road where the fault line at the gth position is located, It is assumed that the power grid repair vehicle stops at the midpoint of the road where the faulty line is located.

[0096] The travel time of the repair vehicle from the g-1 fault line to the g-th fault line for:

[0097]

[0098] In the formula, ε h is the influence coefficient of the road surface damage on the vehicle speed of the hth road, ε g is the influence coefficient of the road surface damage of the g-th fault line on the vehicle speed, and v is the original speed of the vehicle.

[0099] The total time required for the distribution network fault repair team to repair the gth fault Including the time for emergency repair, the time for the repair vehicle to travel, and the time for the repair team to wait. for:

[0100]

[0101] In the formula, The time it takes for the power grid repair team to wait for the road to be repaired while on their way to the g-th fault line. is the repair time of the g-th fault line, is the closing time of the tie line, Y fault is the fault line set, Y connetion-line A collection of contact lines.

[0102] When the distribution network line repair and road clearing are carried out simultaneously, It can be calculated using formula (8).

[0103]

[0104] In the formula, is the accumulation of repair time of the damaged road at the previous w locations, is the cumulative repair time of the faulty line at g-1. , it means that the roadblock has been cleared before the distribution network fault repair, so the waiting time of the distribution network repair team is 0.

[0105] 4. Emergency power supply vehicle restrictions

[0106] The distance traveled by the emergency power supply vehicle from the m-1 power supply node to the mth power supply node for:

[0107]

[0108] In the formula, s n N is the length of the nth road that the emergency power supply vehicle passes from the m-1th power supply node to the mth node, m The number of roads that the repair vehicle passes through from the faulty line at location m-1 to the faulty line at location m.

[0109] The distance traveled by the emergency power supply vehicle from the m-1th power supply node to the mth node for:

[0110]

[0111] In the formula, ε n is the influence coefficient of the road surface damage on the vehicle speed of the nth road, and v is the original speed of the vehicle.

[0112] The time that the emergency power supply vehicle supplies power to the mth power supply node can be calculated using formula (11).

[0113]

[0114] In the formula, Z m The set 0 of faulty lines during the period from when the power supply of the grid is restored to the m-1th power supply node to when the power supply of the grid is restored to the mth power supply node; The time accumulated by the grid repair vehicle to repair the fault between the m-1th and mth power supply vehicle power supply nodes restoring grid power supply.

[0115] Embodiment 3:

[0116] A distribution network emergency repair and restoration method taking into account the influence of the traffic network, the main contents of which are shown in Example 1-2, wherein the method for solving the fault line emergency repair and restoration model taking into account the influence of the traffic network is as follows:

[0117] The optimization model of the distribution network repair strategy can be described as a nonlinear mixed integer optimization problem. Its variables include integer variables and continuous variables. In order to facilitate the solution of the distribution network repair sequence, the road network repair sequence and the emergency power supply sequence, this paper develops a solution method. The solution method is explained as follows.

[0118] If the number of candidate nodes in the current step is n, each candidate node is assumed to be the current selection, and the remaining nodes are sorted according to the size of the selection criteria. N optimization strategies are generated, and the global objective function values ​​of the n strategies are calculated and compared. The candidate node corresponding to the strategy with the best global objective function value is selected as the selection node of the current step, and then proceed to the next step.

[0119] The selection process of the model solution method is as follows Figure 4 As shown in the figure, in the first step, the three candidate nodes select subsequent child nodes according to the selection criteria, and reach three selection strategies. The global objective function values ​​of the three selection strategies are compared, and the results are passed to the parent node. The node with the best global objective function is selected and the next step is entered. In the second step, there are two candidate nodes, and the selection is carried out according to the above steps until all nodes are selected.

[0120] Determination of selection criteria:

[0121] 1) Selection criteria for fault lines in distribution networks

[0122] The selection criteria are the basis for making each step of the selection. When the distribution network repair team arranges the order of repairing the faulty lines, it also considers the load power outage caused by the faulty line and the road conditions at the geographical location.

[0123] The distribution network emergency repair will give priority to restoring power supply to nodes with high importance and large load. Define the power outage node restoration index β j , characterizes the speed at which the load node restores power supply, that is, the amount of load that can be restored per unit time.

[0124]

[0125] In the formula, β j is the recovery index value of power outage node j, λ j is the load weight coefficient of power outage node j, P j is the load of the power outage node j, t min,j The total time required to repair the shortest restoration path for the power outage node j.

[0126] β j Do normalization.

[0127]

[0128] The associated nodes of the faulty line are the load nodes affected by the fault. The node power loss caused by the faulty line i is calculated by the fault-associated load parameter δ″ i To express.

[0129]

[0130] V n is the set of outage nodes associated with fault line i.

[0131] Considering the impact of emergency repairs on the traffic network, if the road where the faulty line is located needs to be repaired, the longer the repair time of the road, the greater the delay in the emergency repair of the line. Therefore, when selecting the lines for emergency repair, priority should be given to the faulty lines where the roads do not need to be repaired or the repair time is short. The impact of the road is included in the composition of the selection criteria. The road emergency repair time index is expressed as:

[0132]

[0133] Y R A collection of all moderately damaged and heavily damaged roads.

[0134] In summary, the selection criteria for the fault line are composed of two parts: the fault-related load parameter and the repair time index of the road where the fault is located. As shown in the following formula.

[0135] ζ E,i =δ″ i -γ i (16)

[0136] 2) Selection criteria for damaged roads in the transportation network

[0137] The repair order of the traffic network roads is based on completing the repair of the next damaged road faster, and the selection criteria for damaged roads are as shown in the following formula.

[0138] ζ R,m =t l,min +t m (17)

[0139] Where, t l,min is the travel time of the repair team with the shortest distance to the last damaged road, t m is the repair time of the mth road.

[0140] 3) Selection criteria for power outage areas

[0141] The whole network power outage range is divided into several power outage areas with fault lines as intervals, and the selection criteria for the power supply area of ​​the emergency power supply vehicle are obtained as shown in the following formula. The area with the largest criterion value is selected to connect to the emergency power supply vehicle.

[0142]

[0143] Where W k is the set of important nodes in the power outage area k. E It is the maximum output power of the emergency power supply vehicle.

[0144] Embodiment 4:

[0145] An experiment on a distribution network emergency repair and restoration method taking into account the impact of the traffic network, including:

[0146] This embodiment uses an IEEE 33-node distribution network coupled with a 12-node transportation network for example analysis. In this system, the initial points of the distribution network repair vehicle, the transportation network repair vehicle, and the emergency power supply vehicle are all located at distribution network node 1, that is, transportation network node 6. The node is equipped with one distribution network repair vehicle, one transportation network repair vehicle, and one emergency power supply vehicle, and the driving speed on a flat and intact road is 40km / h. The maximum output power of the emergency power supply vehicle is 150kW, and it can maintain power supply for 15 hours under full load. The shortest path between every two locations is selected by the Floyd algorithm. It is assumed that the weather in the area where the repair team passes through during the repair process is good, and the repair team has sufficient repair capabilities and repair materials. The fault scenario diagram of the 33-node distribution network system and the fault scenario diagram of the 12-node transportation network system are shown in the figure below. Figure 2 and Figure 3 shown.

[0147] This embodiment sets the following two comparison schemes.

[0148] Comparative Plan 1: The distribution network repair vehicle avoids moderately damaged and severely damaged roads and only takes smooth, intact and slightly damaged roads. The order of line fault repair is determined from near to far, without considering the repair situation of traffic network roads. At the same time, an emergency power supply vehicle is equipped to supply power to important loads.

[0149] Comparison plan 2: The distribution network repair vehicle does not distinguish between road types. Combined with the repair situation of the traffic network roads, the repair order of the distribution network repair vehicle and the traffic network repair vehicle is determined on the principle of near to far. At the same time, an emergency power supply vehicle is equipped to supply power to important loads.

[0150] Table 1 Solution results

[0151] plan Power loss of distribution network (kW·h) Time required to restore power supply (h) Comparison plan 1 <![CDATA[4.0595×10 4 ]]> 26.45 Comparison plan 2 <![CDATA[5.9767×10 4 ]]> 30.95 This embodiment scheme <![CDATA[2.3824×10 4 ]]> 28.70

[0152] According to the data in Table 1, it can be seen that compared with the scheme of this embodiment, the power grid repair team of Comparative Scheme 1 avoids moderately damaged and severely damaged roads during driving, and is not affected by the progress of the road repair team to repair the road. The time required to eliminate all line faults and restore power supply to the entire network is shorter, but the corresponding distribution network load loss is nearly twice as large as the repair scheme of this embodiment. This will expand the impact of power outages and bring more losses. Comparative Scheme 2 takes into account the repair process of the transportation network. The power grid repair vehicle travels on the shortest path from one fault to the next fault. When encountering a road that is being repaired, it chooses to stop and wait instead of choosing a farther road. The order of repair of the distribution network and the transportation network is determined from near to far, without the optimization of the newly developed solution method. As a result, compared with the scheme of this embodiment, the distribution network loss is nearly twice as large, and the time required to restore power supply to the entire network is also longer.

[0153] The above results analysis shows that the coordinated dispatching plan of the distribution network repair team and the transportation network repair team uses a greedy algorithm to optimize the repair sequence and add emergency power supply vehicles to provide short-term power supply to important loads, which is beneficial to reducing the power loss of the distribution network after the power outage, restoring the power supply of the entire network load more quickly, reducing the impact of the power outage, and reducing the power outage losses.

Claims

1. A distribution network emergency repair and restoration method taking into account the impact of the traffic network, characterized in that: The following steps are involved: 1) Establish a fault line repair and restoration model that takes into account the impact of the transportation network; 2) Obtaining information on the traffic network, distribution network and emergency power supply vehicle, and inputting it into the fault line repair and recovery model to obtain the distribution network repair and recovery sequence; the distribution network repair and recovery sequence includes the traffic network repair sequence, the distribution network repair sequence and the emergency power supply vehicle power supply sequence; The constraints of the fault line repair and restoration model include traffic network road repair vehicle constraints, distribution network fault repair vehicle constraints, and emergency power supply vehicle constraints; The constraints of the road repair vehicle in the traffic network are shown in formulas (1)-(3): In the formula, s f F is the length of the fth road that the traffic network repair vehicle passes from the damaged road at the d-1th location to the dth location. d The number of roads that the traffic network repair vehicle passes from the damaged road at location d-1 to the damaged road at location d; The distance traveled by the traffic network repair vehicle from the damaged road at the d-1th location to the damaged road at the dth location; In the formula, ε f is the influence coefficient of the road surface damage on the vehicle speed of the fth road, and v is the original speed of the vehicle; is the travel time of the traffic network repair vehicle from the d-1 damaged road to the d damaged road; In the formula, The time for repairing the damaged road at location d; The total time required to repair the damaged road at location d; The constraints of the distribution network fault repair vehicle are shown in formulas (4)-(6): In the formula, s h H is the length of the hth road that the distribution network repair vehicle passes through from the g-1th fault line to the gth fault line, g is the number of roads that the distribution network repair vehicle passes through from the g-1th fault line to the gth fault line, s g is the length of the road where the fault line at the gth position is located; s g-1 is the length of the road where the fault line at position g-1 is located; is the travel distance of the distribution network repair vehicle from the g-1th fault line to the gth fault line; In the formula, ε h is the influence coefficient of the road surface damage on the vehicle speed of the hth road; ε g is the influence coefficient of the road surface damage on the vehicle speed where the g-th fault line is located; v is the original speed of the vehicle; is the travel time of the distribution network repair vehicle from the g-1th fault line to the gth fault line; In the formula, The time it takes for the power grid repair team to wait for the road to be repaired while on their way to the g-th fault line. is the repair time of the g-th fault line, is the time when the tie line is closed, Y fault is the fault line set, Y connetion-line is the contact line set; The total time required to repair the g-th fault line; The emergency power supply vehicle constraints are shown in formulas (7)-(9): In the formula, s n N is the length of the nth road that the emergency power supply vehicle passes from the m-1th power supply node to the mth node, m The number of roads that the repair vehicle passes through from the faulty line at location m-1 to the faulty line at location m; is the travel distance of the emergency power supply vehicle from the m-1 power supply node to the mth power supply node; In the formula, ε n is the influence coefficient of the road surface damage of the nth road on the vehicle speed, and v is the original speed of the vehicle; is the travel time of the emergency power supply vehicle from the m-1th power supply node to the mth power supply node; In the formula, Z m The set 0 of faulty lines during the period from when the power supply of the grid is restored to the m-1th power supply node to when the power supply of the grid is restored to the mth power supply node; It represents the accumulated time for the power grid repair vehicle to repair the fault between the power supply nodes of the m-1th and mth power supply vehicles restoring the power supply of the power grid; The time it takes for the emergency power supply vehicle to supply power to the mth power supply node.

2. A distribution network emergency repair and restoration method taking into account the impact of the traffic network according to claim 1, characterized in that: The objective function of the fault line repair and restoration model is as follows: Where A is the number of fault lines that need to be repaired in the distribution network; B is the number of nodes that lose power in the distribution network before the a-th fault line is repaired; C is the number of nodes that lose power supplied by the emergency power supply vehicle; λ b , P b The load weight coefficient and load amount of the nodes in the distribution network that lost power before repair; λ c , P c The load weight coefficient and load amount of the power-off node supplied by the emergency power supply vehicle; is the total time required to repair the faulty line at position a, The time it takes for the emergency power supply vehicle to supply power to the cth power supply node.

3. A distribution network repair and restoration method taking into account the impact of the traffic network according to claim 1, characterized in that: When the power distribution network line repair and traffic network repair are carried out simultaneously, the power grid repair team waits for the road repair time on the way to the g-th fault line. As shown below: In the formula, is the accumulation of repair time of the damaged road at the previous w locations, It is the accumulation of repair time for the faulty line at g-1.

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