Power construction emergency resource allocation method and system

Abstract

The invention relates to the technical field of cable allocation, in particular to a power construction emergency resource allocation method and system, and the method comprises the steps: obtaining first data, second data and third data; calculating a first basic distance to an Nth basic distance and a fault distance group according to the geographic position of the cable warehouse and the first position to the Nth position; establishing a power grid simulation model; arranging the first fault point to the Nth fault point to obtain a first emergency repair time sequence to an Mth emergency repair time sequence; performing fault setting on the power grid simulation model to obtain a first state simulation model to an Mth state simulation model; performing power grid simulation to obtain a first simulation result to an Mth simulation result; calculating to obtain first to Mth first-aid repair indexes; and searching to obtain an optimal first-aid repair time sequence. Through calculation and optimization analysis of the power grid simulation model, optimization allocation of the power line repair time sequence is realized.

Description

Technical Field

[0001] The invention relates to the technical field of cable allocation, and in particular to a method and system for allocating emergency resources for electric power construction. Background Art

[0002] Cable is the most important resource in power construction and rescue. Cable is a wire used to transmit electricity, usually composed of one or more insulated conductors and wrapped in a protective jacket. Power cables are used to transmit electricity and usually contain one or more copper or aluminum conductors, which are wrapped with insulating materials and protective layers. Specifically, power cables are composed of the following main parts: The innermost part of the cable is the conductor, which is the core part of the power cable and is usually made of copper or aluminum because these two materials have good conductivity. The conductor is mainly responsible for transmitting current and plays a bridging role in power repair. The insulation layer is a layer of insulating material wrapped around the outside of the conductor to prevent current from leaking to the outside of the cable and also protect the conductor. Commonly used insulating materials include polyvinyl chloride, cross-linked polyethylene, etc. The metal shielding layer is located outside the insulation layer and is usually woven from one or more layers of metal wire. It can shield the electromagnetic interference in the cable and provide additional mechanical protection for the cable. In some types of power cables, there is also a layer of metal armor, which can increase the tensile strength and wear resistance of the cable, especially suitable for occasions that need to be buried or exposed to harsh environments. The outer sheath is the outermost protective layer, generally made of plastic material such as polyethylene. It is not only waterproof and moisture-proof, but also can resist damage to the cable caused by external factors such as ultraviolet rays and chemical erosion.

[0003] Since the structure of cables is very complex, in order to better maintain the insulation of cables, cables used for emergency rescue in a deployment area are often centrally stored in the same cable warehouse. In addition, in order to standardize the use and management of cables, only one emergency repair vehicle is allowed to enter and exit the cable warehouse. Although this method can improve the quality and efficiency of cable management, it also greatly affects the efficiency of power emergency repair. For example, when multiple faults occur in the power grid in the deployment area, how to determine the order of emergency repairs and scientifically deploy cables is a technical problem that needs to be solved.

[0004] In order to overcome the shortcomings of the existing technology, it is necessary to use power grid simulation to optimize the repair sequence based on the simulation measurement data, so as to achieve optimal allocation of repair cable materials and improve the repair efficiency. Summary of the invention

[0005] (1) Technical issues to be solved

[0006] The purpose of the present invention is to provide a method and system for allocating emergency resources for electric power construction, so as to optimize the timing of emergency repair of power grid faults and further optimize the allocation of emergency repair cable materials.

[0007] (2) Technical solution

[0008] To achieve the above object, the present invention provides a method for allocating emergency resources for power construction, the method comprising the following steps:

[0009] S1, obtain first data; the first data includes the geographical wiring diagram of the power grid in the dispatching area, power grid equipment parameters, fundamental power of the power load, and harmonic current of the power load; obtain second data; the second data includes the geographical location of the cable warehouse; obtain third data; the third data includes the number N of power grid fault points, and the first position to the Nth position; number the N fault points to obtain the first fault point to the Nth fault point; the first position to the Nth position respectively represent the geographical locations of the first fault point to the Nth fault point.

[0010] S2, according to the geographical location of the cable warehouse and the distance between the first position to the Nth position, calculate the distance between the geographical location of the cable warehouse and the first position to the Nth position, record them as the first basic distance to the Nth basic distance respectively, calculate the distance between any two positions from the first position to the Nth position, and obtain the fault distance group.

[0011] S3, establish a power grid simulation model according to the power grid geographical wiring diagram, power grid equipment parameters, power load fundamental power, and power load harmonic current; arrange the first fault point to the Nth fault point to obtain the first emergency repair sequence to the Mth emergency repair sequence; M is the number of emergency repair sequences; set faults for the power grid simulation model according to the first basic distance to the Nth basic distance, the fault distance group, and the first emergency repair sequence to the Mth emergency repair sequence to obtain the first state simulation model to the Mth state simulation model.

[0012] S4, perform power grid simulation according to the first state simulation model to the Mth state simulation model to obtain first to Mth simulation results; calculate first to Mth emergency repair indicators according to the first to Mth simulation results; search for the emergency repair timing corresponding to the emergency repair indicator with the smallest value among the first to Mth emergency repair indicators to obtain the optimal emergency repair timing.

[0013] Furthermore, the method of arranging the first fault point to the Nth fault point to obtain the first emergency repair sequence to the Mth emergency repair sequence includes:

[0014] According to the number of fault points N, the integers between 1 and N are multiplied to obtain the number of emergency repair time sequences M.

[0015] The first fault point to the Nth fault point are fully arranged to obtain the first emergency repair sequence to the Mth emergency repair sequence; the arrangement order of the fault points in the first emergency repair sequence to the Mth emergency repair sequence represents the emergency repair sequence.

[0016] Further, the method of performing fault setting on the power grid simulation model according to the first basic distance to the Nth basic distance, the fault distance group, and the first emergency repair sequence to the Mth emergency repair sequence to obtain the first state simulation model to the Mth state simulation model includes:

[0017] The first fault point to the Nth fault point are set in the power grid simulation model to obtain an initial fault model.

[0018] The fault points in the initial fault model are cleared according to the arrangement order of the fault points in the first emergency repair sequence to the Mth emergency repair sequence to obtain the first fault recovery simulation model to the Mth fault recovery simulation model.

[0019] The initial fault model is combined with the first fault recovery simulation model to the Mth fault recovery simulation model to obtain the first state simulation model to the Mth state simulation model.

[0020] Further, the method of clearing the fault points in the initial fault model in sequence according to the arrangement order of the fault points in the first emergency repair sequence to the Mth emergency repair sequence to obtain the first fault recovery simulation model to the Mth fault recovery simulation model includes:

[0021] The simulation clearing quantity R is calculated based on the number of fault points N. The calculation formula for the simulation clearing quantity is:

[0022] R = N;

[0023] The simulation clearing matrix U is obtained according to the first emergency repair sequence to the Mth emergency repair sequence and the number of simulation clearings; the simulation clearing matrix is ​​expressed as:

[0024]

[0025] Among them, q ij Indicates the jth simulation clear in the i-th repair sequence; i is an integer variable with a value from 1 to M; j is an integer variable with a value from 1 to R; q ij It is expressed as:

[0026] q ij ={t ij , b ij};

[0027] Among them, b ij Indicates the number corresponding to the jth fault point in the i-th repair sequence; t ij represents the jth simulation clearing time in the i-th repair sequence; t ij The calculation formula is:

[0028]

[0029] in, Indicates the b i1 Basic distance; v represents the preset average speed of the repair vehicle; T0 represents the preset average repair time of the fault; F(b i(d-1) , b id ) represents the bth fault distance group i(d-1) Position and b id The distance between positions; d is an integer variable with values ​​from 2 to j.

[0030] The simulation clearing matrix is ​​divided into rows to obtain the first clearing sequence to the Mth clearing sequence; respectively, according to the first clearing sequence to the Mth clearing sequence, t ij and b ij The fault points in the initial fault model are cleared in sequence according to the values ​​of to obtain the first fault recovery simulation model to the Mth fault recovery simulation model.

[0031] Further, the method for calculating the first emergency repair index to the Mth emergency repair index according to the first simulation result to the Mth simulation result includes:

[0032] The grid nodes pre-selected in the grid simulation model are defined as observation nodes; the observation nodes are numbered to obtain the first observation node to the Gth observation node; wherein G is the number of observation nodes; the average voltage effective value and the average harmonic voltage distortion rate of the first observation node to the Gth observation node in the first simulation result to the Mth simulation result are read respectively to obtain the first voltage simulation data sequence to the Mth voltage simulation data sequence, and the first harmonic voltage distortion rate simulation data sequence to the Mth harmonic voltage distortion rate simulation data sequence.

[0033] According to the first voltage simulation data sequence to the Mth voltage simulation data sequence and the first harmonic voltage distortion rate simulation data sequence to the Mth harmonic voltage distortion rate simulation data sequence, the first emergency repair index to the Mth emergency repair index are calculated using the emergency repair index calculation formula; the emergency repair index calculation formula is:

[0034]

[0035] Among them, Z i represents the i-th repair index, U i，k represents the average voltage effective value of the kth observation node in the i-th voltage simulation data sequence; U0 represents the preset voltage reference value; w i，k Represents the average harmonic voltage distortion rate of the kth observation node in the i-th harmonic voltage distortion rate simulation data sequence; k is an integer variable with a value from 1 to G.

[0036] Based on the same inventive concept, on the other hand, the present invention also provides a power construction emergency resource allocation system, the system comprising:

[0037] A data reading module is used to obtain first data; the first data includes a geographical wiring diagram of a power grid in a dispatching area, power grid equipment parameters, fundamental power of a power load, and harmonic current of a power load; obtain second data; the second data includes a geographical location of a cable warehouse; obtain third data; the third data includes the number N of power grid fault points, and a first position to an Nth position; number the N fault points to obtain a first fault point to an Nth fault point; the first position to the Nth position respectively represent the geographical locations of the first fault point to the Nth fault point.

[0038] The distance calculation module is connected to the data reading module, and is used to calculate the distance between the geographical location of the cable warehouse and the first position to the Nth position according to the geographical location of the cable warehouse and the first position to the Nth position, which are recorded as the first basic distance to the Nth basic distance respectively, and calculate the distance between any two positions from the first position to the Nth position to obtain the fault distance group.

[0039] The simulation model construction module is connected to the distance calculation module and is used to establish a power grid simulation model according to the power grid geographical wiring diagram, power grid equipment parameters, power load fundamental power, and power load harmonic current; arrange the first fault point to the Nth fault point to obtain the first emergency repair sequence to the Mth emergency repair sequence; wherein M is the number of emergency repair sequences; and perform fault setting on the power grid simulation model according to the first basic distance to the Nth basic distance, the fault distance group, and the first emergency repair sequence to the Mth emergency repair sequence to obtain the first state simulation model to the Mth state simulation model.

[0040] The emergency repair timing calculation module is connected to the simulation model construction module, and is used to perform power grid simulation according to the first state simulation model to the Mth state simulation model to obtain the first simulation result to the Mth simulation result; calculate the first emergency repair index to the Mth emergency repair index according to the first simulation result to the Mth simulation result; search for the emergency repair timing corresponding to the emergency repair index with the smallest value among the first emergency repair index to the Mth emergency repair index to obtain the optimal emergency repair timing.

[0041] Furthermore, the simulation model building module includes:

[0042] The emergency repair sequence quantity calculation module is used to obtain the emergency repair sequence quantity M by multiplying integers between 1 and N according to the number of fault points N.

[0043] The arrangement module is connected to the emergency repair sequence quantity calculation module and is used to fully arrange the first fault point to the Nth fault point to obtain the first emergency repair sequence to the Mth emergency repair sequence; the arrangement order of the fault points in the first emergency repair sequence to the Mth emergency repair sequence represents the emergency repair sequence.

[0044] Furthermore, the simulation model building module includes:

[0045] The initial fault model building module is used to set the first fault point to the Nth fault point into the power grid simulation model to obtain an initial fault model.

[0046] The fault recovery simulation model construction module is connected to the initial fault model construction module, and is used to clear the fault points in the initial fault model according to the arrangement order of the fault points in the first emergency repair sequence to the Mth emergency repair sequence, so as to obtain the first fault recovery simulation model to the Mth fault recovery simulation model.

[0047] The simulation model combination module is connected to the fault recovery simulation model construction module, and is used to respectively combine the initial fault model with the first fault recovery simulation model to the Mth fault recovery simulation model to obtain the first state simulation model to the Mth state simulation model.

[0048] Furthermore, the fault recovery simulation model construction module includes:

[0049] The simulation clearing quantity calculation module is used to calculate the simulation clearing quantity R according to the number of fault points N; the calculation formula of the simulation clearing quantity is:

[0050] R = N;

[0051] The simulation clearing matrix calculation module is connected to the simulation clearing quantity calculation module, and is used to obtain the simulation clearing matrix U according to the first emergency repair sequence to the Mth emergency repair sequence and the simulation clearing quantity; the simulation clearing matrix is ​​expressed as:

[0052]

[0053] Where qij represents the jth simulation clearing in the i-th repair sequence; i is an integer variable with a value from 1 to M; j is an integer variable with a value from 1 to R; q ij It is expressed as:

[0054] q ij ={t ij , b ij};

[0055] Among them, b ij Indicates the number corresponding to the jth fault point in the i-th repair sequence; t ij represents the jth simulation clearing time in the i-th repair sequence; t ij The calculation formula is:

[0056]

[0057] in, Indicates the b i1 Basic distance; v represents the preset average speed of the repair vehicle; T0 represents the preset average repair time of the fault; F(bi(d-1) , b id ) represents the bth fault distance group i(d-1) Position and b id The distance between positions; d is an integer variable with values ​​from 2 to j.

[0058] The model generation module is connected to the simulation clearing matrix calculation module, and is used to divide the simulation clearing matrix into rows to obtain the first clearing sequence to the Mth clearing sequence; respectively, according to the first clearing sequence to the Mth clearing sequence t ij and b ij The fault points in the initial fault model are cleared in sequence according to the values ​​of to obtain the first fault recovery simulation model to the Mth fault recovery simulation model.

[0059] Furthermore, the emergency repair timing calculation module includes:

[0060] A simulation calculation module is used to define the power grid nodes pre-selected in the power grid simulation model as observation nodes; number the observation nodes to obtain the first observation node to the Gth observation node; wherein G is the number of observation nodes; and read the average voltage effective value and the average harmonic voltage distortion rate of the first observation node to the Gth observation node in the first simulation result to the Mth simulation result respectively to obtain the first voltage simulation data sequence to the Mth voltage simulation data sequence, and the first harmonic voltage distortion rate simulation data sequence to the Mth harmonic voltage distortion rate simulation data sequence.

[0061] The emergency repair index calculation module is connected to the simulation calculation module and is used to calculate the first emergency repair index to the Mth emergency repair index according to the first voltage simulation data sequence to the Mth voltage simulation data sequence and the first harmonic voltage distortion rate simulation data sequence to the Mth harmonic voltage distortion rate simulation data sequence; the emergency repair index calculation formula is:

[0062]

[0063] Among them, Z i represents the i-th repair index, U i，k represents the average voltage effective value of the kth observation node in the i-th voltage simulation data sequence; U0 represents the preset voltage reference value; w i，k Represents the average harmonic voltage distortion rate of the kth observation node in the i-th harmonic voltage distortion rate simulation data sequence; k is an integer variable with a value from 1 to G.

[0064] (3) Beneficial effects

[0065] Compared with the prior art, the present invention has the following beneficial effects:

[0066] The first to Mth emergency repair indicators are calculated based on the first to Mth simulation results, and the optimal emergency repair sequence is obtained by searching for the emergency repair sequence corresponding to the emergency repair indicator with the smallest value among the first to Mth emergency repair indicators. Since the first to Mth emergency repair indicators comprehensively reflect the emergency repair timeliness and the power quality level of the power grid after the fault repair, the present invention realizes the optimization formulation of the optimal emergency repair sequence. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Figure 1 A flowchart of a method for allocating emergency resources for electric power construction according to Embodiment 1 of the present invention;

[0068] Figure 2 This is a schematic diagram of the module composition of a power construction emergency rescue resource allocation system according to Example 2 of the present invention. DETAILED DESCRIPTION

[0069] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0070] Before giving examples, it is necessary to explain the application scenarios of the present invention. The present invention is applied to optimize the timing of power grid fault repairs through simulation calculations when cable resources are centrally stored, thereby achieving optimal allocation of repair cable materials.

[0071] Example 1: Figure 1 As shown, this embodiment provides a method for allocating emergency resources for power construction, the method comprising the following steps:

[0072] S1, obtain first data; the first data includes the geographical wiring diagram of the power grid in the dispatching area, power grid equipment parameters, fundamental power of the power load, and harmonic current of the power load; obtain second data; the second data includes the geographical location of the cable warehouse; obtain third data; the third data includes the number N of power grid fault points, and the first position to the Nth position; number the N fault points to obtain the first fault point to the Nth fault point; the first position to the Nth position respectively represent the geographical locations of the first fault point to the Nth fault point.

[0073] For example, there are three grid faults in the deployment area, so the number of grid fault points N=3, and the first fault point to the third fault point and the first position to the third position are obtained. It is necessary to transport cables to the first position, the second position, and the third position by a repair vehicle to repair the first fault point, the second fault point, and the third fault point.

[0074] S2, according to the geographical location of the cable warehouse and the distance between the first position to the Nth position, calculate the distance between the geographical location of the cable warehouse and the first position to the Nth position, record them as the first basic distance to the Nth basic distance respectively, calculate the distance between any two positions from the first position to the Nth position, and obtain the fault distance group.

[0075] For example, the distances between the geographical location of the cable warehouse and the first position to the third position are calculated to be 9380 meters, 11240 meters, and 10350 meters, respectively, so the first basic distance to the third basic distance are 9380 meters, 11240 meters, and 10350 meters, respectively. According to the calculation from the first position to the third position, the distance between the first position and the second position is 8740 meters, the distance between the first position and the third position is 18570 meters, and the distance between the second position and the third position is 10660 meters, so the fault distance group is: 8740 meters, 18570 meters, and 10660 meters.

[0076] S3, establish a power grid simulation model according to the power grid geographical wiring diagram, power grid equipment parameters, power load fundamental power, and power load harmonic current; arrange the first fault point to the Nth fault point to obtain the first emergency repair sequence to the Mth emergency repair sequence; M is the number of emergency repair sequences; set faults for the power grid simulation model according to the first basic distance to the Nth basic distance, the fault distance group, and the first emergency repair sequence to the Mth emergency repair sequence to obtain the first state simulation model to the Mth state simulation model.

[0077] Exemplarily, a power grid simulation model is established based on the PSCAD simulation software according to the power grid geographical wiring diagram, power grid equipment parameters, power load fundamental power, and power load harmonic current. There are 6 arrangement orders for arranging the first to third fault points, namely, the first fault point → the second fault point → the third fault point, the first fault point → the third fault point → the second fault point, the second fault point → the first fault point → the third fault point, the second fault point → the third fault point → the first fault point, the third fault point → the first fault point → the second fault point, and the third fault point → the second fault point → the first fault point. The 6 arrangement orders correspond to the first to the sixth repair sequence, respectively. The repair sequence indicates the order of repair of the fault points. Taking the first repair sequence as an example, since the first repair sequence is the first fault point → the second fault point → the third fault point, it means that the first fault point is repaired first, then the second fault point, and finally the third fault point. The power grid simulation model is fault-set according to the first basic distance to the third basic distance, the fault distance group, and the first emergency repair sequence to the sixth emergency repair sequence to obtain the first state simulation model to the sixth state simulation model.

[0078] S4, perform power grid simulation according to the first state simulation model to the Mth state simulation model to obtain first to Mth simulation results; calculate first to Mth emergency repair indicators according to the first to Mth simulation results; search for the emergency repair timing corresponding to the emergency repair indicator with the smallest value among the first to Mth emergency repair indicators to obtain the optimal emergency repair timing.

[0079] Exemplarily, the first state simulation model to the sixth state simulation model are run on the PSCAD simulation software to obtain the first simulation results to the sixth simulation results. The first to sixth emergency repair indicators are calculated based on the first to sixth simulation results. Since the emergency repair indicator with the smallest value among the first to sixth emergency repair indicators is the second emergency repair indicator. The emergency repair sequence corresponding to the second emergency repair indicator is the second emergency repair sequence, that is, the emergency repair is carried out in the order of the first fault point → the third fault point → the second fault point. Therefore, the first fault point → the third fault point → the second fault point is the optimal emergency repair sequence. The emergency repair personnel deploy cable materials according to the optimal emergency repair sequence.

[0080] Furthermore, the method of arranging the first fault point to the Nth fault point to obtain the first emergency repair sequence to the Mth emergency repair sequence includes:

[0081] According to the number of fault points N, the integers between 1 and N are multiplied to obtain the number of emergency repair time sequences M.

[0082] Exemplarily, since the number of fault points N=3, the number of emergency repair sequences M=6 is obtained by multiplying integers between 1 and 3.

[0083] The first fault point to the Nth fault point are fully arranged to obtain the first emergency repair sequence to the Mth emergency repair sequence; the arrangement order of the fault points in the first emergency repair sequence to the Mth emergency repair sequence represents the emergency repair sequence.

[0084] Further, the method of performing fault setting on the power grid simulation model according to the first basic distance to the Nth basic distance, the fault distance group, and the first emergency repair sequence to the Mth emergency repair sequence to obtain the first state simulation model to the Mth state simulation model includes:

[0085] The first fault point to the Nth fault point are set in the power grid simulation model to obtain an initial fault model.

[0086] The fault points in the initial fault model are cleared according to the arrangement order of the fault points in the first emergency repair sequence to the Mth emergency repair sequence to obtain the first fault recovery simulation model to the Mth fault recovery simulation model.

[0087] The initial fault model is combined with the first fault recovery simulation model to the Mth fault recovery simulation model to obtain the first state simulation model to the Mth state simulation model.

[0088] Further, the method of clearing the fault points in the initial fault model in sequence according to the arrangement order of the fault points in the first emergency repair sequence to the Mth emergency repair sequence to obtain the first fault recovery simulation model to the Mth fault recovery simulation model includes:

[0089] The simulation clearing quantity R is calculated based on the number of fault points N. The calculation formula for the simulation clearing quantity is:

[0090] R = N;

[0091] The simulation clearing matrix U is obtained according to the first emergency repair sequence to the Mth emergency repair sequence and the number of simulation clearings; the simulation clearing matrix is ​​expressed as:

[0092]

[0093] Among them, q ij Indicates the jth simulation clear in the i-th repair sequence; i is an integer variable with a value from 1 to M; j is an integer variable with a value from 1 to R; q ij It is expressed as:

[0094] q ij ={t ij , b ij};

[0095] Among them, b ij Indicates the number corresponding to the jth fault point in the i-th repair sequence; t ij represents the jth simulation clearing time in the i-th repair sequence; t ij The calculation formula is:

[0096]

[0097] in, Indicates the b i1 Basic distance; v represents the preset average speed of the repair vehicle; T0 represents the preset average repair time of the fault; F(b i(d-1) , b id ) represents the bth fault distance group i(d-1) Position and b id The distance between positions; d is an integer variable with values ​​from 2 to j.

[0098] Exemplarily, a simulation clearing matrix U is obtained according to the first to sixth emergency repair timings and the simulation clearing quantity;

[0099]

[0100] With q 11 For example, q 11Indicates the first simulation clearing in the first emergency repair sequence. Since the first emergency repair sequence is the first fault point → the second fault point → the third fault point, the first simulation clearing in the first emergency repair sequence indicates the removal of the first fault point in the first emergency repair sequence.

[0101] Due to q 11 ={t 11 , b 11}, b 11 Indicates the number corresponding to the first fault point in the first emergency repair sequence. Since the first emergency repair sequence is the first fault point → the second fault point → the third fault point, b 11 =1. Therefore t 11 The calculation formula is:

[0102]

[0103] Where S1 represents the first basic distance, i.e. 9380 meters. The pre-set average speed of the repair vehicle v = 5 meters per second. The pre-set average repair time T0 = 6600 seconds, so t is calculated. 11 = 8476 seconds. So q 11 ={8476 seconds, 1}.

[0104] Similarly, for q 12 ,q 12 Indicates the second simulation clearing in the first emergency repair sequence. Since the first emergency repair sequence is the first fault point → the second fault point → the third fault point, the second simulation clearing in the first emergency repair sequence indicates the removal of the second fault point in the first emergency repair sequence.

[0105] Due to q 12 ={t 12 , b 12}, b 12 Indicates the number corresponding to the second fault point in the first emergency repair sequence. Since the first emergency repair sequence is the first fault point → the second fault point → the third fault point, b 12 =2. Therefore t 12 The calculation formula is:

[0106]

[0107] Due to b 11 =1, b 12 =2, so F(b 11 , b 12 )=F(1,2), which is the distance between the first position and the second position in the fault distance group, that is, 8740 meters. Calculate t 12 = 16824 seconds. So q 12 ={16824 seconds, 2}.

[0108] Similarly, we can calculate q13 = {25556 seconds, 3}.

[0109] The simulation clearing matrix is ​​divided into rows to obtain the first clearing sequence to the Mth clearing sequence; respectively, according to the first clearing sequence to the Mth clearing sequence, t ij and b ij The fault points in the initial fault model are cleared in sequence according to the values ​​of to obtain the first fault recovery simulation model to the Mth fault recovery simulation model.

[0110] Exemplarily, the simulation clearing matrix is ​​divided into rows to obtain the first clearing sequence to the sixth clearing sequence; according to the first clearing sequence to the sixth clearing sequence, t ij and b ij The values ​​of q are used to clear the fault points in the initial fault model in sequence, and the first fault recovery simulation model to the sixth fault recovery simulation model are obtained. Taking the first fault recovery simulation model as an example, since q 11 ={8476 seconds, 1}, q 12 ={16824 seconds, 2}, q 13 ={25556 seconds, 3}, therefore, based on the initial fault model, the first fault point is cleared at 8476 seconds, the second fault point is cleared at 16824 seconds, and the third fault point is cleared at 25556 seconds, and the simulation model state transition process from 0 seconds to 25556 seconds is recorded as the first fault recovery simulation model.

[0111] Further, the method for calculating the first emergency repair index to the Mth emergency repair index according to the first simulation result to the Mth simulation result includes:

[0112] The grid nodes pre-selected in the grid simulation model are defined as observation nodes; the observation nodes are numbered to obtain the first observation node to the Gth observation node; wherein G is the number of observation nodes; the average voltage effective value and the average harmonic voltage distortion rate of the first observation node to the Gth observation node in the first simulation result to the Mth simulation result are read respectively to obtain the first voltage simulation data sequence to the Mth voltage simulation data sequence, and the first harmonic voltage distortion rate simulation data sequence to the Mth harmonic voltage distortion rate simulation data sequence.

[0113] Exemplarily, the grid nodes connected to hospitals, government agencies, and manufacturing plants are selected as observation nodes; the observation nodes are numbered to obtain the first observation node to the eighth observation node. The average voltage effective value and the average harmonic voltage distortion rate of the first observation node to the eighth observation node in the first simulation result to the sixth simulation result are read respectively to obtain the first voltage simulation data sequence to the sixth voltage simulation data sequence and the first harmonic voltage distortion rate simulation data sequence to the sixth harmonic voltage distortion rate simulation data sequence.

[0114] According to the first voltage simulation data sequence to the Mth voltage simulation data sequence and the first harmonic voltage distortion rate simulation data sequence to the Mth harmonic voltage distortion rate simulation data sequence, the first emergency repair index to the Mth emergency repair index are calculated using the emergency repair index calculation formula; the emergency repair index calculation formula is:

[0115]

[0116] Among them, Z i represents the i-th repair index, U i，k represents the average voltage effective value of the kth observation node in the i-th voltage simulation data sequence; U0 represents the preset voltage reference value; w i，k Represents the average harmonic voltage distortion rate of the kth observation node in the i-th harmonic voltage distortion rate simulation data sequence; k is an integer variable with a value from 1 to G.

[0117] Exemplarily, the calculation formula of Z1 is:

[0118]

[0119] Embodiment 2: Based on the same inventive concept, Figure 2 As shown, this embodiment also provides a power construction emergency resource allocation system, the system comprising:

[0120] A data reading module is used to obtain first data; the first data includes a geographical wiring diagram of a power grid in a dispatching area, power grid equipment parameters, fundamental power of a power load, and harmonic current of a power load; obtain second data; the second data includes a geographical location of a cable warehouse; obtain third data; the third data includes the number N of power grid fault points, and a first position to an Nth position; number the N fault points to obtain a first fault point to an Nth fault point; the first position to the Nth position respectively represent the geographical locations of the first fault point to the Nth fault point.

[0121] The distance calculation module is connected to the data reading module, and is used to calculate the distance between the geographical location of the cable warehouse and the first position to the Nth position according to the geographical location of the cable warehouse and the first position to the Nth position, which are recorded as the first basic distance to the Nth basic distance respectively, and calculate the distance between any two positions from the first position to the Nth position to obtain the fault distance group.

[0122] The simulation model construction module is connected to the distance calculation module and is used to establish a power grid simulation model according to the power grid geographical wiring diagram, power grid equipment parameters, power load fundamental power, and power load harmonic current; arrange the first fault point to the Nth fault point to obtain the first emergency repair sequence to the Mth emergency repair sequence; wherein M is the number of emergency repair sequences; and perform fault setting on the power grid simulation model according to the first basic distance to the Nth basic distance, the fault distance group, and the first emergency repair sequence to the Mth emergency repair sequence to obtain the first state simulation model to the Mth state simulation model.

[0123] The emergency repair timing calculation module is connected to the simulation model construction module, and is used to perform power grid simulation according to the first state simulation model to the Mth state simulation model to obtain the first simulation result to the Mth simulation result; calculate the first emergency repair index to the Mth emergency repair index according to the first simulation result to the Mth simulation result; search for the emergency repair timing corresponding to the emergency repair index with the smallest value among the first emergency repair index to the Mth emergency repair index to obtain the optimal emergency repair timing.

[0124] Furthermore, the simulation model building module includes:

[0125] The emergency repair sequence quantity calculation module is used to obtain the emergency repair sequence quantity M by multiplying integers between 1 and N according to the number of fault points N.

[0126] The arrangement module is connected to the emergency repair sequence quantity calculation module and is used to fully arrange the first fault point to the Nth fault point to obtain the first emergency repair sequence to the Mth emergency repair sequence; the arrangement order of the fault points in the first emergency repair sequence to the Mth emergency repair sequence represents the emergency repair sequence.

[0127] Furthermore, the simulation model building module includes:

[0128] The initial fault model building module is used to set the first fault point to the Nth fault point into the power grid simulation model to obtain an initial fault model.

[0129] The fault recovery simulation model construction module is connected to the initial fault model construction module, and is used to clear the fault points in the initial fault model according to the arrangement order of the fault points in the first emergency repair sequence to the Mth emergency repair sequence, so as to obtain the first fault recovery simulation model to the Mth fault recovery simulation model.

[0130] The simulation model combination module is connected to the fault recovery simulation model construction module, and is used to respectively combine the initial fault model with the first fault recovery simulation model to the Mth fault recovery simulation model to obtain the first state simulation model to the Mth state simulation model.

[0131] Furthermore, the fault recovery simulation model construction module includes:

[0132] The simulation clearing quantity calculation module is used to calculate the simulation clearing quantity R according to the number of fault points N; the calculation formula of the simulation clearing quantity is:

[0133] R = N;

[0134] The simulation clearing matrix calculation module is connected to the simulation clearing quantity calculation module, and is used to obtain the simulation clearing matrix U according to the first emergency repair sequence to the Mth emergency repair sequence and the simulation clearing quantity; the simulation clearing matrix is ​​expressed as:

[0135]

[0136] Among them, q ij Indicates the jth simulation clear in the i-th repair sequence; i is an integer variable with a value from 1 to M; j is an integer variable with a value from 1 to R; q ij It is expressed as:

[0137] q ij ={t ij , b ij};

[0138] Among them, b ij Indicates the number corresponding to the jth fault point in the i-th repair sequence; t ij represents the jth simulation clearing time in the i-th repair sequence; t ij The calculation formula is:

[0139]

[0140] in, Indicates the b i1 Basic distance; v represents the preset average speed of the repair vehicle; T0 represents the preset average repair time of the fault; F(b i(d-1) , b id ) represents the bth fault distance group i(a-1) Position and b id The distance between positions; d is an integer variable with values ​​from 2 to j.

[0141] The model generation module is connected to the simulation clearing matrix calculation module, and is used to divide the simulation clearing matrix into rows to obtain the first clearing sequence to the Mth clearing sequence; respectively, according to the first clearing sequence to the Mth clearing sequence t ij and b ij The fault points in the initial fault model are cleared in sequence according to the values ​​of to obtain the first fault recovery simulation model to the Mth fault recovery simulation model.

[0142] Furthermore, the emergency repair timing calculation module includes:

[0143] A simulation calculation module is used to define the power grid nodes pre-selected in the power grid simulation model as observation nodes; number the observation nodes to obtain the first observation node to the Gth observation node; wherein G is the number of observation nodes; and read the average voltage effective value and the average harmonic voltage distortion rate of the first observation node to the Gth observation node in the first simulation result to the Mth simulation result respectively to obtain the first voltage simulation data sequence to the Mth voltage simulation data sequence, and the first harmonic voltage distortion rate simulation data sequence to the Mth harmonic voltage distortion rate simulation data sequence.

[0144] The emergency repair index calculation module is connected to the simulation calculation module and is used to calculate the first emergency repair index to the Mth emergency repair index according to the first voltage simulation data sequence to the Mth voltage simulation data sequence and the first harmonic voltage distortion rate simulation data sequence to the Mth harmonic voltage distortion rate simulation data sequence; the emergency repair index calculation formula is:

[0145]

[0146] Among them, Z i represents the i-th repair index, U i，k represents the average voltage effective value of the kth observation node in the i-th voltage simulation data sequence; U0 represents the preset voltage reference value; w i，k Represents the average harmonic voltage distortion rate of the kth observation node in the i-th harmonic voltage distortion rate simulation data sequence; k is an integer variable with a value from 1 to G.

[0147] It should be noted that, regarding the system in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0148] Finally, it should be noted that: Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for allocating emergency resources for electric power construction, characterized in that: The method comprises the following steps: S1, obtain first data; the first data includes the geographical wiring diagram of the power grid in the dispatching area, power grid equipment parameters, fundamental power of the power load, and harmonic current of the power load; obtain second data; the second data includes the geographical location of the cable warehouse; obtain third data; the third data includes the number N of power grid fault points, and the first position to the Nth position; number the N fault points to obtain the first fault point to the Nth fault point; the first position to the Nth position respectively represent the geographical locations of the first fault point to the Nth fault point; S2, according to the geographical location of the cable warehouse and the distance between the first location and the Nth location, the distance between the geographical location of the cable warehouse and the first location and the Nth location is calculated, recorded as the first basic distance to the Nth basic distance respectively, and the distance between any two locations from the first location to the Nth location is calculated to obtain a fault distance group; S3, establishing a power grid simulation model according to the power grid geographical wiring diagram, power grid equipment parameters, power load fundamental power, and power load harmonic current; arranging the first fault point to the Nth fault point to obtain the first emergency repair sequence to the Mth emergency repair sequence; wherein M is the number of emergency repair sequences; performing fault settings on the power grid simulation model according to the first basic distance to the Nth basic distance, the fault distance group, and the first emergency repair sequence to the Mth emergency repair sequence to obtain the first state simulation model to the Mth state simulation model; S4, perform power grid simulation according to the first state simulation model to the Mth state simulation model to obtain first to Mth simulation results; calculate first to Mth emergency repair indicators according to the first to Mth simulation results; search for the emergency repair timing corresponding to the emergency repair indicator with the smallest value among the first to Mth emergency repair indicators to obtain the optimal emergency repair timing.

2. A method for allocating emergency resources for electric power construction as claimed in claim 1, characterized in that: The method of arranging the first fault point to the Nth fault point to obtain the first emergency repair time sequence to the Mth emergency repair time sequence includes: According to the number of fault points N, the integers between 1 and N are multiplied to obtain the number of emergency repair sequence M; The first fault point to the Nth fault point are fully arranged to obtain the first emergency repair sequence to the Mth emergency repair sequence; the arrangement order of the fault points in the first emergency repair sequence to the Mth emergency repair sequence represents the emergency repair sequence.

3. A method for allocating emergency resources for electric power construction as claimed in claim 2, characterized in that: The method of performing fault setting on the power grid simulation model according to the first basic distance to the Nth basic distance, the fault distance group, and the first emergency repair sequence to the Mth emergency repair sequence to obtain the first state simulation model to the Mth state simulation model includes: Setting the first fault point to the Nth fault point into the power grid simulation model to obtain an initial fault model; Clear the fault points in the initial fault model according to the arrangement order of the fault points in the first emergency repair sequence to the Mth emergency repair sequence, and obtain the first fault recovery simulation model to the Mth fault recovery simulation model; The initial fault model is combined with the first fault recovery simulation model to the Mth fault recovery simulation model to obtain the first state simulation model to the Mth state simulation model.

4. A method for allocating emergency resources for electric power construction as claimed in claim 3, characterized in that: The method of clearing the fault points in the initial fault model in sequence according to the arrangement order of the fault points in the first emergency repair sequence to the Mth emergency repair sequence to obtain the first fault recovery simulation model to the Mth fault recovery simulation model comprises: The simulation clearing quantity R is calculated based on the number of fault points N. The calculation formula for the simulation clearing quantity is: R = N; The simulation clearing matrix U is obtained according to the first emergency repair sequence to the Mth emergency repair sequence and the number of simulation clearings; the simulation clearing matrix is ​​expressed as: Among them, q ij Indicates the jth simulation clear in the i-th repair sequence; i is an integer variable with a value from 1 to M; j is an integer variable with a value from 1 to R; q ij It is expressed as: q ij ={t ij ,b ij }; Among them, b ij Indicates the number corresponding to the jth fault point in the i-th repair sequence; t ij represents the jth simulation clearing time in the i-th repair sequence; t ij The calculation formula is: in, Indicates the b i1 Basic distance; v represents the preset average speed of the repair vehicle; T0 represents the preset average repair time of the fault; F(b i(d-1) , b id ) represents the bth fault distance group i(d-1) Position and b id The distance between the positions; d is an integer variable with values ​​from 2 to j; The simulation clearing matrix is ​​divided into rows to obtain the first clearing sequence to the Mth clearing sequence; respectively, according to the first clearing sequence to the Mth clearing sequence, t ij and b ij The fault points in the initial fault model are cleared in sequence according to the values ​​of to obtain the first fault recovery simulation model to the Mth fault recovery simulation model.

5. A method for allocating emergency resources for electric power construction as claimed in claim 4, characterized in that: The method for calculating the first to Mth emergency repair indicators according to the first to Mth simulation results comprises: The power grid nodes pre-selected in the power grid simulation model are defined as observation nodes; the observation nodes are numbered to obtain the first observation node to the Gth observation node; wherein G is the number of observation nodes; the average voltage effective value and the average harmonic voltage distortion rate of the first observation node to the Gth observation node in the first simulation result to the Mth simulation result are read respectively to obtain the first voltage simulation data sequence to the Mth voltage simulation data sequence, and the first harmonic voltage distortion rate simulation data sequence to the Mth harmonic voltage distortion rate simulation data sequence; According to the first voltage simulation data sequence to the Mth voltage simulation data sequence and the first harmonic voltage distortion rate simulation data sequence to the Mth harmonic voltage distortion rate simulation data sequence, the first emergency repair index to the Mth emergency repair index are calculated using the emergency repair index calculation formula; the emergency repair index calculation formula is: Among them, Z i represents the i-th repair index, U i，k represents the average voltage effective value of the kth observation node in the i-th voltage simulation data sequence; U0 represents the preset voltage reference value; w i，k Represents the average harmonic voltage distortion rate of the kth observation node in the i-th harmonic voltage distortion rate simulation data sequence; k is an integer variable with a value from 1 to G.

6. A power construction emergency resource allocation system, characterized in that: The system comprises: A data reading module is used to obtain first data; the first data includes a geographical wiring diagram of a power grid in a dispatching area, power grid equipment parameters, fundamental power of power load, and harmonic current of power load; obtain second data; the second data includes a geographical location of a cable warehouse; obtain third data; the third data includes the number N of power grid fault points, and a first position to an Nth position; the N fault points are numbered to obtain a first fault point to an Nth fault point; the first position to the Nth position respectively represent the geographical locations of the first fault point to the Nth fault point; A distance calculation module is connected to the data reading module, and is used to calculate the distance between the geographical location of the cable warehouse and the first location to the Nth location according to the geographical location of the cable warehouse and the first location to the Nth location, which are recorded as the first basic distance to the Nth basic distance respectively, and calculate the distance between any two locations from the first location to the Nth location to obtain a fault distance group; The simulation model construction module is connected to the distance calculation module and is used to establish a power grid simulation model according to the power grid geographical wiring diagram, power grid equipment parameters, power load fundamental power, and power load harmonic current; arrange the first fault point to the Nth fault point to obtain the first emergency repair sequence to the Mth emergency repair sequence; wherein M is the number of emergency repair sequences; perform fault setting on the power grid simulation model according to the first basic distance to the Nth basic distance, the fault distance group, and the first emergency repair sequence to the Mth emergency repair sequence to obtain the first state simulation model to the Mth state simulation model; The emergency repair timing calculation module is connected to the simulation model construction module, and is used to perform power grid simulation according to the first state simulation model to the Mth state simulation model to obtain the first simulation result to the Mth simulation result; calculate the first emergency repair index to the Mth emergency repair index according to the first simulation result to the Mth simulation result; search for the emergency repair timing corresponding to the emergency repair index with the smallest value among the first emergency repair index to the Mth emergency repair index to obtain the optimal emergency repair timing.

7. The power construction emergency resource allocation system according to claim 6, characterized in that: The simulation model building module includes: The emergency repair sequence quantity calculation module is used to obtain the emergency repair sequence quantity M by multiplying integers between 1 and N according to the number of fault points N; The arrangement module is connected to the emergency repair sequence quantity calculation module and is used to fully arrange the first fault point to the Nth fault point to obtain the first emergency repair sequence to the Mth emergency repair sequence; the arrangement order of the fault points in the first emergency repair sequence to the Mth emergency repair sequence represents the emergency repair sequence.

8. The power construction emergency resource allocation system according to claim 7, characterized in that: The simulation model building module includes: An initial fault model building module is used to set the first fault point to the Nth fault point into the power grid simulation model to obtain an initial fault model; A fault recovery simulation model construction module is connected to the initial fault model construction module and is used to clear the fault points in the initial fault model according to the arrangement order of the fault points in the first emergency repair sequence to the Mth emergency repair sequence, so as to obtain the first fault recovery simulation model to the Mth fault recovery simulation model; The simulation model combination module is connected to the fault recovery simulation model construction module, and is used to respectively combine the initial fault model with the first fault recovery simulation model to the Mth fault recovery simulation model to obtain the first state simulation model to the Mth state simulation model.

9. The power construction emergency resource allocation system according to claim 8, characterized in that: The fault recovery simulation model building module includes: The simulation clearing quantity calculation module is used to calculate the simulation clearing quantity R according to the number of fault points N; the calculation formula of the simulation clearing quantity is: R = N; The simulation clearing matrix calculation module is connected to the simulation clearing quantity calculation module, and is used to obtain the simulation clearing matrix U according to the first emergency repair sequence to the Mth emergency repair sequence and the simulation clearing quantity; the simulation clearing matrix is ​​expressed as: Among them, q ij Indicates the jth simulation clear in the i-th repair sequence; i is an integer variable with a value from 1 to M; j is an integer variable with a value from 1 to R; q ij It is expressed as: q ij ={t ij ,b ij }; Among them, b ij Indicates the number corresponding to the jth fault point in the i-th repair sequence; t ij represents the jth simulation clearing time in the i-th repair sequence; t ij The calculation formula is: in, Indicates the b i1 Basic distance; v represents the preset average speed of the repair vehicle; T0 represents the preset average repair time of the fault; F(b i(d-1) , b id ) represents the bth fault distance group i(d-1) Position and b id The distance between the positions; d is an integer variable with values ​​from 2 to j; The model generation module is connected to the simulation clearing matrix calculation module, and is used to divide the simulation clearing matrix into rows to obtain the first clearing sequence to the Mth clearing sequence; respectively, according to the first clearing sequence to the Mth clearing sequence t ij and b ij The fault points in the initial fault model are cleared in sequence according to the values ​​of to obtain the first fault recovery simulation model to the Mth fault recovery simulation model.

10. The power construction emergency resource allocation system according to claim 9, characterized in that: The emergency repair timing calculation module includes: A simulation calculation module is used to define the power grid nodes pre-selected in the power grid simulation model as observation nodes; number the observation nodes to obtain the first observation node to the Gth observation node; wherein G is the number of observation nodes; respectively read the average voltage effective value and the average harmonic voltage distortion rate of the first observation node to the Gth observation node in the first simulation result to the Mth simulation result, and obtain the first voltage simulation data sequence to the Mth voltage simulation data sequence, and the first harmonic voltage distortion rate simulation data sequence to the Mth harmonic voltage distortion rate simulation data sequence; The emergency repair index calculation module is connected to the simulation calculation module and is used to calculate the first emergency repair index to the Mth emergency repair index according to the first voltage simulation data sequence to the Mth voltage simulation data sequence and the first harmonic voltage distortion rate simulation data sequence to the Mth harmonic voltage distortion rate simulation data sequence; the emergency repair index calculation formula is: Among them, Z i represents the i-th repair index, U i，k represents the average voltage effective value of the kth observation node in the i-th voltage simulation data sequence; U0 represents the preset voltage reference value; w i，k Represents the average harmonic voltage distortion rate of the kth observation node in the i-th harmonic voltage distortion rate simulation data sequence; k is an integer variable with a value from 1 to G.

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