Method and device for determining position of flexible interconnection device, and electronic equipment

Abstract

The invention discloses a method and device for determining the position of a flexible interconnection device and electronic equipment, and relates to the technical field of power grid power, and the method comprises the steps: collecting the power data of a power grid at a plurality of preset moments, collecting the actual bus voltage value of each transformer substation at each preset moment for each power grid partition, and calculating the actual bus voltage value of each transformer substation; determining steady-state reactive power based on the actual bus voltage value and the power data, adding all the steady-state reactive power to a first preset set, analyzing each fault at each preset moment to obtain the voltage and reactive power of each fault, and constructing a preset voltage power curve graph based on the unstable voltage and reactive power, and determining supplementary reactive power, adding the supplementary reactive power to a second preset set, and determining the position of the flexible interconnection device according to the first preset set and the second preset set. The technical problem that the position of the flexible interconnection device cannot be accurately determined in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the field of power grid technology, and in particular to a method for determining the position of a flexible interconnection device, a device thereof, and electronic equipment. Background Art

[0002] In the power system, receiving city grids (i.e., those that primarily receive power from higher-level grids) experience significant load fluctuations, a low proportion of internal power supply support, and an annually increasing cableization rate (i.e., the proportion and coverage of cable lines). This leads to issues such as the need for high-reliability power supply and an imperfect structure, persistent voltage overshoots and limited control measures, and grid structure and short-circuit current control. Therefore, it is necessary to break away from the current grid model and establish an interconnected urban grid operation mode that is adapted to the new power system.

[0003] Currently, back-to-back flexible DC technology, based on indirect frequency-converting AC-DC converters, achieves flexible grid interconnection, but it faces challenges such as complex AC-DC-AC power conversion, high cost, and large footprint. From a power system analysis perspective, back-to-back flexible DC devices resemble generators with no moment of inertia, enabling rapid adjustment of their output voltage and frequency, thereby controlling the magnitude and direction of active and reactive power. With the development of direct AC-AC conversion technology, which has found applications in flexible low-frequency transmission and variable-speed pumped storage, a new approach has been proposed to achieve flexible interconnection using direct AC-AC conversion. This direct AC-AC converter topology, suitable for high-voltage and high-power scenarios, primarily utilizes a modular multilevel matrix converter (MMC). This interconnects two power-frequency regional grids via a bilaterally decoupled M3C converter, enabling rapid, continuous, and bidirectional adjustment of active and reactive power on both sides of the grid. This enhances voltage and reactive power support capabilities, isolates faults, and limits short-circuit currents.

[0004] However, how to select sites and determine capacity based on the actual needs of the power grid and device characteristics to maximize the effectiveness of flexible interconnected devices is an unresolved problem.

[0005] Therefore, there is an urgent need for a method to guide the rational deployment of flexible interconnected devices to improve the flexibility, stability and economic benefits of power grid operation.

[0006] To address the above-mentioned problems, no effective solutions have been proposed so far. Summary of the Invention

[0007] The embodiments of the present invention provide a method for determining the position of a flexible interconnection device, a device thereof, and an electronic device, so as to at least solve the technical problem in the related art that the position of the flexible interconnection device cannot be accurately determined.

[0008] According to one aspect of an embodiment of the present invention, a method for determining the location of a flexible interconnection device is provided, comprising: collecting power data of a power grid at multiple preset moments, wherein the power grid includes at least multiple power grid partitions, each power grid partition including multiple substations, and each power grid partition corresponding to a partition identifier; for each power grid partition, collecting an actual bus voltage value of each substation in the power grid partition at each preset moment, determining a steady-state reactive power based on the actual bus voltage value and the power data, and adding all steady-state reactive powers to a first preset set, wherein each steady-state reactive power is associated with a partition identifier; for each power grid partition, analyzing each fault at each preset moment based on the power data to obtain a voltage and reactive power of each fault, wherein the voltage is an unstable voltage or a normal voltage; if the voltage is an unstable voltage, constructing a preset voltage-power curve based on the unstable voltage and the reactive power, determining a supplementary reactive power based on the preset voltage-power curve, and adding the supplementary reactive power to a second preset set, wherein the supplementary reactive power is associated with the partition identifier; and determining the location of the flexible interconnection device based on the first preset set and the second preset set.

[0009] Furthermore, before collecting the power data of the power grid at multiple preset moments, the method further includes: numbering each grid partition of the power grid to obtain a partition identifier; and numbering each substation to obtain a substation identifier.

[0010] Furthermore, based on the actual bus voltage value and power data, the steady-state reactive power is determined, and all steady-state reactive powers are added to the first preset set, including: constructing a grid reactive power model based on the power data, and determining the ring network excess reactive power value of each grid partition at each preset moment based on the grid reactive power model; determining the voltage operation lower limit value and the voltage operation upper limit value of each grid partition; for each grid partition at each preset moment, judging whether the actual bus voltage value of each substation is within a preset range, wherein the preset range is determined based on the voltage operation lower limit value and the voltage operation upper limit value; when the actual bus voltage value of each substation is within the preset range, adding the ring network excess reactive power value of the grid partition at the preset moment to A preset ring network excess reactive power set; sorting the excess reactive power values of each ring network in the preset ring network excess reactive power set to obtain the maximum ring network excess reactive power, and determining the maximum ring network excess reactive power as the steady-state reactive power of the power grid partition; adding all steady-state reactive powers to the first preset set; or, judging whether there is an actual bus voltage value of a substation greater than the voltage operation upper limit value; in the case that there is an actual bus voltage value of a substation greater than the voltage operation upper limit value, determining the ring network excess reactive power value of the power grid partition at the preset moment as the steady-state reactive power, and adding the steady-state reactive power to the first preset set, wherein the actual bus voltage value of each substation is associated with the reactive power flow reverse, and the ring network excess reactive power value is determined based on the reactive power flow reverse.

[0011] Furthermore, before analyzing each fault at each preset moment and obtaining the voltage of each fault, the method includes: determining the fault at each preset moment based on the partition identifier and the substation identifier.

[0012] Furthermore, based on the unstable voltage and reactive power, the step of constructing a preset voltage-power curve diagram includes: for each grid partition, screening all unstable voltages to obtain a target unstable voltage, wherein the target unstable voltage corresponds to fault information, wherein the fault information at least includes: the fault location where the target unstable voltage occurs; determining the recovery voltage at the fault location and the recovery reactive power corresponding to the recovery voltage; constructing a preset voltage-power curve diagram based on the target unstable voltage, reactive power, recovery voltage and recovery reactive power.

[0013] Furthermore, the step of determining the location of the flexible interconnection device based on the first preset set and the second preset set includes: adding the steady-state reactive power in the first preset set and the supplementary reactive power in the second preset set to a third preset set based on each preset moment; for each partition identifier corresponding to the reactive power in the third preset set, counting the frequency of occurrence at different preset moments, and determining the location of the flexible interconnection device based on the frequency.

[0014] Furthermore, the method for determining the position of the flexible interconnection device further includes: numerically sorting all reactive powers in the third preset set to obtain a maximum reactive power; and determining the maximum reactive power as the reactive capacity of the flexible interconnection device.

[0015] According to another aspect of an embodiment of the present invention, a device for determining the position of a flexible interconnection device is also provided, including: a first acquisition unit, used to collect power data of the power grid at multiple preset moments, wherein the power grid includes at least: multiple power grid partitions, each power grid partition includes: multiple substations, and each power grid partition corresponds to a partition identifier; a first determination unit, used to collect the actual bus voltage value of each substation in the power grid partition at each preset moment for each power grid partition, determine the steady-state reactive power based on the actual bus voltage value and the power data, and add all the steady-state reactive powers to a first preset set, wherein each steady-state reactive power is related to the partition identifier connection; a first analyzing unit, for each grid partition, analyzing each fault at each preset moment according to the power data, to obtain the voltage and reactive power of each fault, wherein the voltage is an unstable voltage or a normal voltage; a second determining unit, for constructing a preset voltage-power curve diagram based on the unstable voltage and the reactive power when the voltage is an unstable voltage, and determining the supplementary reactive power based on the preset voltage-power curve diagram, and adding the supplementary reactive power to a second preset set, wherein the supplementary reactive power is associated with the partition identifier; a third determining unit, for determining the position of the flexible interconnection device according to the first preset set and the second preset set.

[0016] Furthermore, the device for determining the location of the flexible interconnection device includes: a first numbering module, which is used to number each grid partition of the power grid before collecting power data of the power grid at multiple preset moments to obtain a partition identification; a second numbering module, which is used to number each substation to obtain a substation identification.

[0017] Furthermore, the first determination unit includes: a first determination module, which is used to construct a grid reactive power model based on power data, and determine the ring network excess reactive power value of each grid partition at each preset time based on the grid reactive power model; a second determination module, which is used to determine the voltage operation lower limit value and the voltage operation upper limit value of each grid partition; a first judgment module, which is used to judge whether the actual bus voltage value of each substation is within a preset range for each grid partition at each preset time, wherein the preset range is determined based on the voltage operation lower limit value and the voltage operation upper limit value; a first adding module, which is used to add the ring network excess reactive power value of the grid partition at the preset time to the preset ring network excess reactive power set when the actual bus voltage value of each substation is within the preset range; a first sorting module, Used to sort the excess reactive power values of each ring network in the preset ring network excess reactive power set to obtain the maximum ring network excess reactive power, and determine the maximum ring network excess reactive power as the steady-state reactive power of the power grid partition; a second adding module, used to add all steady-state reactive powers to the first preset set; a second judgment module, used to judge whether there is an actual bus voltage value of a substation greater than the voltage operation upper limit value; a third determination module, used to determine the ring network excess reactive power value of the power grid partition at a preset moment as the steady-state reactive power when there is an actual bus voltage value of a substation greater than the voltage operation upper limit value, and add the steady-state reactive power to the first preset set, wherein the actual bus voltage value of each substation is associated with the reactive power flow reverse, and the ring network excess reactive power value is determined based on the reactive power flow reverse.

[0018] Furthermore, the flexible interconnection device location determination device includes: a first analysis module, configured to determine the fault at each preset moment based on a partition identifier and a substation identifier before analyzing each fault at each preset moment and obtaining the voltage of each fault.

[0019] Furthermore, the second determination unit includes: a first screening module, used to screen all unstable voltages for each power grid partition to obtain a target unstable voltage, wherein the target unstable voltage corresponds to fault information, wherein the fault information at least includes: the fault location where the target unstable voltage occurs; a fourth determination module, used to determine the recovery voltage at the fault location and the recovery reactive power corresponding to the recovery voltage; a first construction module, used to construct a preset voltage-power curve diagram based on the target unstable voltage, reactive power, recovery voltage and recovery reactive power.

[0020] Furthermore, the third determination unit includes: a third adding module, used to add the steady-state reactive power in the first preset set and the supplementary reactive power in the second preset set to the third preset set according to each preset moment; a first statistical module, used to count the frequency of occurrence of the partition identifier corresponding to each reactive power in the third preset set at different preset moments, and determine the position of the flexible interconnection device based on the frequency.

[0021] Furthermore, the device for determining the position of the flexible interconnection device includes: a second sorting module, used to numerically sort all reactive powers in the third preset set to obtain the maximum reactive power; and a fifth determination module, used to determine the maximum reactive power as the reactive capacity of the flexible interconnection device.

[0022] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, any one of the above methods for determining the position of a flexible interconnection device is implemented.

[0023] According to another aspect of an embodiment of the present invention, an electronic device is provided, comprising one or more processors and a memory, wherein the memory is used to store one or more programs, wherein when the one or more programs are executed by one or more processors, the one or more processors implement any of the above-mentioned methods for determining the position of a flexible interconnection device.

[0024] In the present invention, power data of the power grid at multiple preset moments are collected. For each power grid partition, the actual bus voltage value of each substation in the power grid partition at each preset moment is collected. Based on the actual bus voltage value and the power data, the steady-state reactive power is determined, and all steady-state reactive powers are added to a first preset set. For each power grid partition, each fault at each preset moment is analyzed based on the power data to obtain the voltage and reactive power of each fault. When the voltage is an unstable voltage, a preset voltage-power curve is constructed based on the unstable voltage and the reactive power. Based on the preset voltage-power curve, the supplementary reactive power is determined, and the supplementary reactive power is added to a second preset set. Based on the first preset set and the second preset set, the position of the flexible interconnection device is determined, thereby solving the technical problem in the related art that the position of the flexible interconnection device cannot be accurately determined.

[0025] In the present invention, by collecting statistics on the load conditions, internal power generation and transformation capacity, and other power data of each power grid partition at multiple preset moments, and combining them with actual operation data, the power grid is modeled using simulation software. The reactive excess power of each power grid partition can be obtained, and the voltage stability under various fault conditions can be analyzed. The reactive compensation power is further quantified, and the position of the flexible interconnection device is determined by the reactive excess power and the reactive compensation power, thereby achieving the technical effect of improving the accuracy of determining the position of the flexible interconnection device and enhancing the ability of the urban power grid to cope with load fluctuations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0027] Figure 1 is a flow chart of an optional method for determining the position of a flexible interconnection device according to an embodiment of the present invention;

[0028] Figure 2 1 is a schematic diagram of voltage instability caused by a double-circuit fault between substations in an optional power grid according to an embodiment of the present invention;

[0029] Figure 3 is a schematic diagram of a voltage-power curve at the weakest location in an optional power grid partition according to an embodiment of the present invention;

[0030] Figure 4 is a schematic diagram of an optional device for determining the position of a flexible interconnection device according to an embodiment of the present invention;

[0031] Figure 5 This is a hardware structure block diagram of an electronic device (or mobile device) for a method for determining a position of a flexible interconnection device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts should fall within the scope of protection of the present invention.

[0033] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0034] It should be noted that the relevant information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) collected and involved in the present invention are all information and data authorized by the user or fully authorized by all parties, and the collection, storage, use, processing, transmission, provision, disclosure and application of the relevant data comply with the relevant laws, regulations and standards of the relevant regions, take necessary confidentiality measures, do not violate public order and good morals, and provide corresponding operation entrances for users to choose to authorize or refuse. For example, an interface is set up between this system and the relevant users or institutions. Before obtaining relevant information, it is necessary to send an acquisition request to the aforementioned user or institution through the interface, and obtain relevant information after receiving the consent information fed back by the aforementioned user or institution.

[0035] In the present invention, since the scale of urban power grids is expanding year by year, the charging power of transmission lines is large, the reactive power in the network is in excess, and the voltage of substations is high, based on the characteristics of flexible active and reactive control of flexible interconnection devices, grid voltage and reactive power management optimization is carried out. Combined with the reactive power requirements of different grid scenarios, a quantitative analysis based on the steady-state and transient reactive power of the grid is proposed to determine the installation location and capacity of the flexible interconnection device.

[0036] The present invention will be described in detail below with reference to various embodiments.

[0037] Example 1

[0038] According to an embodiment of the present invention, an embodiment of a method for determining the position of a flexible interconnect device is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0039] Figure 1is a flow chart of an optional method for determining the position of a flexible interconnection device according to an embodiment of the present invention, such as Figure 1 As shown, the method includes the following steps:

[0040] Step S101 : collecting power data of a power grid at multiple preset moments, wherein the power grid includes at least: multiple power grid partitions, each power grid partition includes: multiple substations, and each power grid partition corresponds to a partition identifier.

[0041] Optionally, data is collected for the entire power grid system, including multiple power grid partitions (each power grid partition has a specific identifier, such as there are 9 power grid partitions, and the power grid partitions are named A, B, C...I) and each power grid partition includes multiple substations (such as a, b...n).

[0042] In this embodiment, power data such as load conditions, internal generator set capacity, and 500kV transformer substation capacity within a power grid partition (such as a 220kV power grid partition) can be collected within preset time periods (such as different time periods during low-peak and flat-peak load periods (such as t1, t2...tn, etc.) to provide a basis for subsequent reactive power analysis and fault simulation.

[0043] For example, the transmission capacity of the 500kV main transformer in the A grid area at time t is calculated as ∑P T , Partition load P load (P load =Aa t +Ab t +.....+An t ), the sum of the output of the generator sets within the partition ∑P G , where the partition load is the load of all substations in the A grid partition (e.g., the load of substation a in the A grid partition is Aa t 、The load Ab of substation b in grid section A t ...the load An of substation n in grid zone A t ) total, based on the above data, we can analyze the power supply capacity P of the A power grid area. net (P net =Average(P load )=Average(∑P T +∑P G )), thereby identifying the moments when excess reactive power may occur.

[0044] Step S102: For each grid partition, collect the actual bus voltage value of each substation in the grid partition at each preset time, determine the steady-state reactive power based on the actual bus voltage value and power data, and add all steady-state reactive powers to the first preset set, where each steady-state reactive power is associated with a partition identifier.

[0045] In this embodiment, the actual bus voltage value of each substation in the power grid partition at each preset time (such as t1, t2...tn) during the observation time (such as during holidays) is collected, and the substations that exceed the voltage range (i.e., the upper and lower voltage limits required by the power grid voltage management) at different preset times are obtained and statistically recorded.

[0046] In this embodiment, based on the actual bus voltage value and power data collected, they can be entered into the power grid simulation analysis program to obtain steady-state reactive power (i.e., excess reactive power), and all steady-state reactive powers are added to the first preset set (pre-set, used to store steady-state reactive power), and each steady-state reactive power is associated with a partition identifier, that is, it can be known to which specific power grid partition each steady-state reactive power belongs.

[0047] For example, the excess charging reactive power of the 220kV ring network in a certain power grid section is about 250.09Mvar, of which 185.20Mvar is fed back from the medium-voltage side of the 500kV main transformer, 135.90Mvar is absorbed by the 220kV unified dispatching units (the units lead in phase) (accounting for 54.34%), and a total of 71.01Mvar is fed back from the high-voltage side of the 220kV main transformer. The overall reactive power situation of a certain power grid section under low load is shown in Table 1.

[0048] Table 1

[0049]

[0050] Step S103 : for each grid partition, each fault at each preset moment is analyzed based on the power data to obtain the voltage and reactive power of each fault, wherein the voltage is an unstable voltage or a normal voltage.

[0051] In this embodiment, for each power grid partition, the power data can also be entered into the power grid simulation analysis program. In the power grid simulation analysis program, each fault at each preset moment (such as ring network line N-1 fault, 220kV load line fault tripping, double-loop network line N-2 fault) is analyzed to obtain the voltage and reactive power of each fault.

[0052] In this embodiment, since not every fault will cause voltage instability, the voltage can be divided into normal voltage and unstable voltage.

[0053] Step S104, when the voltage is an unstable voltage, construct a preset voltage-power curve based on the unstable voltage and reactive power, and determine the supplementary reactive power based on the preset voltage-power curve, and add the supplementary reactive power to the second preset set, wherein the supplementary reactive power is associated with the partition identifier.

[0054] In this embodiment, when the voltage is an unstable voltage (such as Figure 2 As shown, Figure 2 This is a schematic diagram of voltage instability caused by a double-circuit fault between an optional grid-zoned substation according to an embodiment of the present invention, with the horizontal axis being time and the vertical axis being voltage). A preset voltage-power curve diagram can be constructed based on the instability voltage and reactive power, and the supplementary reactive power can be determined based on the preset voltage-power curve diagram, and the supplementary reactive power can be added to a second preset set (pre-set for storing the supplementary reactive power).

[0055] Step S105 : determining the position of the flexible interconnect device according to the first preset set and the second preset set.

[0056] In this embodiment, in the power grid partition, when the reactive power exceeds the reactive power actually required in the system, a reactive power surplus will be formed. The reactive power surplus will cause the substation voltage to increase, or even exceed the allowable voltage range, causing damage to the power equipment. It will also affect the stability and economic operation of the power system. When the power system encounters a disturbance, such as a fault or a sudden change in load, reactive power needs to be supplemented to help the power system return to a stable state more quickly. Therefore, it is necessary to analyze the situation of reactive power surplus and reactive power supplementation, and determine the location of the flexible interconnection device to provide flexible and efficient power control and improve the overall operating performance of the power system.

[0057] In this embodiment, the data in the first preset set and the second preset set can be combined to determine the optimal installation location of the flexible interconnection device. The device should be preferentially deployed in those places where the frequency of reactive power demand is high (such as situations where both reactive power surplus and reactive power supplementation occur).

[0058] In summary, by collecting statistics on the power data of each power grid partition and using simulation software to model the power grid, the reactive excess power of each power grid partition can be obtained, and the voltage stability under various faults can be analyzed to obtain the supplementary reactive power. Through steady-state (i.e., the reactive excess power of the power grid under normal operating conditions) analysis and transient (i.e., the supplementary reactive power when the power grid is disturbed) analysis, the position of the flexible interconnection device is determined, thereby solving the technical problem in related technologies that the position of the flexible interconnection device cannot be accurately determined.

[0059] In order to accurately distinguish between power grid partitions and substations, it is necessary to first determine the partition identifier and substation identifier. In the method for determining the position of the flexible interconnection device provided in Example 1 of the present application, each power grid partition of the power grid is numbered to obtain a partition identifier; each substation is numbered to obtain a substation identifier.

[0060] In this embodiment, each grid partition (such as a 220 kV grid partition) of the power grid may be numbered, and each substation may be numbered to obtain a substation identifier.

[0061] In some optional embodiments, the interconnection lines between every two power grid partitions can be numbered and counted. For example, if there are 9 power grid partitions, the power grid partitions are named A, B, C to I, and the partition interconnection lines (transmitting data between different power grid partitions) can be represented as A_1-B_1, B_1-C_1...H_1-I_1. If there are two interconnection lines between the partitions, the second interconnection line can be represented as A_2-B_2, B_2-C_2...H_2-I_2.

[0062] In order to accurately obtain the first preset set, in the method for determining the position of the flexible interconnection device provided in Example 1 of the present application, a grid reactive power model is constructed based on power data, and based on the grid reactive power model, the ring network excess reactive power value of each grid partition at each preset moment is determined; the voltage operating lower limit value and the voltage operating upper limit value of each grid partition are determined; for each grid partition at each preset moment, it is judged whether the actual bus voltage value of each substation is within the preset range, wherein the preset range is determined based on the voltage operating lower limit value and the voltage operating upper limit value; when the actual bus voltage value of each substation is within the preset range, the ring network excess reactive power value of the grid partition at the preset moment is added to the preset ring network excess reactive power value. power set; sort the excess reactive power values of each ring network in the preset excess reactive power set to obtain the maximum excess reactive power of the ring network, and determine the maximum excess reactive power of the ring network as the steady-state reactive power of the power grid partition; add all steady-state reactive powers to the first preset set; or, determine whether there is an actual bus voltage value of the substation that is greater than the voltage operation upper limit value; in the case that there is an actual bus voltage value of the substation that is greater than the voltage operation upper limit value, determine the excess reactive power value of the ring network of the power grid partition at the preset moment as the steady-state reactive power, and add the steady-state reactive power to the first preset set, wherein the actual bus voltage value of each substation is associated with the reactive power flow reverse, and the ring network excess reactive power value is determined based on the reactive power flow reverse.

[0063] Optionally, the power data can be input into a power grid simulation analysis program, and a power grid reactive power model can be constructed based on the power data. Based on the power grid reactive power model, the excess reactive power value of the ring network at each preset time can be determined for each power grid partition.

[0064] In this embodiment, the voltage operating lower limit value and the voltage operating upper limit value can be set for the substation in each grid partition according to the power system operation specifications. At each preset moment, the actual bus voltage values of all substations in each grid partition are monitored, and it is determined whether the actual bus voltage value of each substation is within the preset range (determined according to the voltage operating lower limit value and the voltage operating upper limit value).

[0065] In this embodiment, when the actual bus voltage value of each substation is within the preset range, but close to the voltage operation upper limit (for example, the voltage operation lower limit of the substation in the A grid area is U Akmin , the upper limit of voltage operation is U Akmax , the actual bus voltage value is U Ak , then U Akmin ≤U Ak ≤U Ak，max , k = a, b, c, ..., n, k represents the kth substation, there are n substations in total), the ring network excess reactive power value of the power grid partition at the preset moment is added to the preset ring network excess reactive power set, and each ring network excess reactive power value in the preset ring network excess reactive power set can be sorted to obtain the maximum ring network excess reactive power, and the maximum ring network excess reactive power is determined as the steady-state reactive power of the power grid partition, and all steady-state reactive powers are added to the first preset set for subsequent comprehensive analysis.

[0066] In this embodiment, for each preset moment, it is determined whether there is an actual bus voltage value (such as U Akmax ≤U Ak ), when there is an actual bus voltage value of the substation that is greater than the voltage operation upper limit, the reactive power flow is recorded and sent back, and the excess reactive power value of the ring network of the power grid partition at the preset moment is determined as the steady-state reactive power, and the steady-state reactive power is added to the first preset set. By dynamically monitoring the bus voltage and combining the voltage operation limit, the moment of excess reactive power in the power grid is effectively screened out, and the steady-state reactive power demand is further determined.

[0067] In order to accurately determine the fault at each preset moment, in the method for determining the position of the flexible interconnection device provided in the first embodiment of the present application, the fault at each preset moment is determined based on the partition identifier and the substation identifier.

[0068] In this embodiment, when performing stability analysis (i.e., fault analysis) on the transient voltage of the power grid, all substations within a certain power grid zone, such as Aa, Ab, and Ac, can be selected to analyze the power grid zone for ring network line N-1 fault (i.e., any single component (such as a transformer, line, or generator) fails or is scheduled to be shut down), 220kV load line fault tripping, and double-loop network line N-2 fault (i.e., two components (usually two parallel lines) fail or are shut down at the same time).

[0069] In order to accurately construct a preset voltage-power curve diagram, in the method for determining the position of a flexible interconnection device provided in Example 1 of the present application, for each power grid partition, all unstable voltages are screened to obtain a target unstable voltage, wherein the target unstable voltage corresponds to fault information, wherein the fault information includes at least: the fault location where the target unstable voltage occurs; determining the recovery voltage at the fault location and the recovery reactive power corresponding to the recovery voltage; and constructing a preset voltage-power curve diagram based on the target unstable voltage, reactive power, recovery voltage, and recovery reactive power.

[0070] In this embodiment, substations whose voltage drops significantly or even reaches an unstable state after a fault occurs are screened out. The voltage of these substations is called unstable voltage. Among all the recorded unstable voltages, the target unstable voltage (i.e., the unstable voltage caused by the most serious fault) can be further screened out through the unstable voltage curve or the number of substations involved in the fault.

[0071] For example, an N-2 fault occurs from the Ac substation to the Ad substation in the A power grid partition, and the voltage in this power grid partition becomes unstable. The fault involves the largest number of substations, so the unstable voltage at this time is the target unstable voltage, and the Ac substation to the Ad substation is the weakest voltage location in the power grid partition (that is, the location where the fault is most serious).

[0072] In this embodiment, based on the determined target instability voltage and the corresponding fault location, the recovery voltage at the fault location (the voltage that restores the voltage at the weak location to a normal or acceptable level) and the recovery reactive power corresponding to the recovery voltage can be obtained in the power grid simulation analysis program. Then, based on the target instability voltage, reactive power, recovery voltage and recovery reactive power, a preset voltage-power curve diagram (such as Figure 3 shown).

[0073] Figure 3 is a schematic diagram of a voltage power curve at the weakest position in an optional power grid partition according to an embodiment of the present invention, such as Figure 3 As shown, the horizontal axis is power Q, and the vertical axis is voltage V, U min is the target instability voltage, U acpTo restore the voltage, the required emergency reactive power support capacity Q can be obtained with the restoration voltage as the goal. DN , where Q DN =ΔQ, ΔQ is the reactive power that needs to be supplemented (i.e., restored reactive power).

[0074] In order to accurately determine the location of the flexible interconnection device, in the method for determining the location of the flexible interconnection device provided in the first embodiment of the present application, the steady-state reactive power in the first preset set and the supplementary reactive power in the second preset set are added to a third preset set at each preset moment; for each partition identifier corresponding to the reactive power in the third preset set, the frequency of occurrence at different preset moments is counted, and the location of the flexible interconnection device is determined based on the frequency.

[0075] In this embodiment, at each preset moment, the steady-state reactive power in the first preset set (the reactive power demand of the power grid during normal operation) and the supplementary reactive power in the second preset set (the emergency reactive power required by the power grid to restore the voltage at the weak point to an acceptable level under the most serious fault) are added to the third preset set. This set brings together the reactive power demand information at all times, providing a comprehensive data basis for subsequent analysis.

[0076] In this embodiment, for each partition identifier corresponding to reactive power in the third preset set, the frequency of occurrence at different preset times is counted, and based on the frequency, the position of the flexible interconnection device is determined (for example, grid partition A only has reactive compensation (i.e., has a supplementary reactive power value) at time t1, grid partition B has reactive power flow reverse transmission (i.e., has a ring network excess reactive power value) and reactive compensation at times t1 and t2, respectively, and grid partition I has reactive power flow reverse transmission and reactive compensation at times t4 and t5, respectively. Then, grid partition B and grid partition I have the highest frequency of occurrence, indicating that these two partitions have frequent demands for reactive power at different preset times, thereby determining the position of the flexible interconnection device).

[0077] In order to accurately determine the reactive capacity of the flexible interconnection device, in the method for determining the position of the flexible interconnection device provided in the first embodiment of the present application, all reactive powers in the third preset set are numerically sorted to obtain the maximum reactive power; and the maximum reactive power is determined as the reactive capacity of the flexible interconnection device.

[0078] In this embodiment, in order to highlight the peak value of reactive power demand in the power grid, the extreme value of reactive power demand at all preset moments is found, all reactive power values in the third preset set are sorted (from large to small, or from small to large, without limitation here), and the maximum reactive power is obtained. The obtained maximum reactive power is set as the reactive capacity of the flexible interconnection device, that is, the flexible interconnection device can provide sufficient reactive power to cope with the most severe reactive power demand scenario that may occur in the power grid.

[0079] In an embodiment of the present invention, reactive power demands (i.e., steady-state reactive power and supplementary reactive power) at all preset moments are added to a third preset set, and then the frequency of reactive power demands for each partition identifier at different preset moments is counted. Based on the frequency information, the partition with the highest reactive power demand frequency is selected as the priority installation location of the device. The reactive power data in the set are then numerically sorted to determine the maximum reactive power demand, which serves as the basis for setting the reactive capacity of the flexible interconnected device, ensuring that the flexible interconnected device can cover all reactive power demand scenarios and improving system stability. Through a quantitative analysis method, the configuration and layout of the flexible interconnected device are optimized to ensure economy and practicality. Moreover, by accurately matching the reactive power demand of the power grid, the stability of urban power grid operation and the improvement of power supply quality are achieved, providing technical support for building an efficient and reliable new urban power system.

[0080] The following describes it in detail with reference to another embodiment.

[0081] Example 2

[0082] The apparatus for determining the position of a flexible interconnection device provided in this embodiment includes multiple implementation units, each of which corresponds to an implementation step in the above-mentioned embodiment 1.

[0083] Figure 4 is a schematic diagram of an optional device for determining the position of a flexible interconnection device according to an embodiment of the present invention, such as Figure 4 As shown, the device for determining the position of the flexible interconnection device may include: a first acquisition unit 40 , a first determination unit 41 , a first analysis unit 42 , a second determination unit 43 , and a third determination unit 44 .

[0084] The first collection unit 40 is configured to collect power data of a power grid at a plurality of preset moments, wherein the power grid comprises at least a plurality of power grid partitions, each power grid partition comprises a plurality of substations, and each power grid partition has a corresponding partition identifier;

[0085] A first determining unit 41 is configured to collect, for each power grid zone, an actual bus voltage value of each substation in the power grid zone at each preset time, determine a steady-state reactive power based on the actual bus voltage value and power data, and add all steady-state reactive powers to a first preset set, wherein each steady-state reactive power is associated with a zone identifier;

[0086] A first analysis unit 42 is configured to analyze each fault at each preset time for each grid partition based on the power data to obtain the voltage and reactive power of each fault, wherein the voltage is an unstable voltage or a normal voltage;

[0087] a second determining unit 43 configured to, when the voltage is an unstable voltage, construct a preset voltage-power curve graph based on the unstable voltage and the reactive power, determine a supplementary reactive power based on the preset voltage-power curve graph, and add the supplementary reactive power to a second preset set, wherein the supplementary reactive power is associated with a partition identifier;

[0088] The third determining unit 44 is configured to determine a position of the flexible interconnect device according to the first preset set and the second preset set.

[0089] The above-mentioned device for determining the position of the flexible interconnection device can collect power data of the power grid at multiple preset moments through the first collection unit 40, and can collect the actual bus voltage value of each substation in the power grid partition at each preset moment for each power grid partition through the first determination unit 41, determine the steady-state reactive power based on the actual bus voltage value and the power data, and add all steady-state reactive powers to the first preset set, and can analyze each fault at each preset moment for each power grid partition based on the power data through the first analysis unit 42 to obtain the voltage and reactive power of each fault, wherein the voltage is an unstable voltage or a normal voltage, and can construct a preset voltage-power curve diagram based on the unstable voltage and reactive power through the second determination unit 43 when the voltage is an unstable voltage, and determine the supplementary reactive power based on the preset voltage-power curve diagram, and add the supplementary reactive power to the second preset set, and can determine the position of the flexible interconnection device based on the first preset set and the second preset set through the third determination unit 44.

[0090] Optionally, the device for determining the location of the flexible interconnection device includes: a first numbering module, used to number each grid partition of the power grid before collecting power data of the power grid at multiple preset moments to obtain a partition identifier; a second numbering module, used to number each substation to obtain a substation identifier.

[0091] Optionally, the first determination unit includes: a first determination module, which is used to construct a grid reactive power model based on power data, and determine the ring network excess reactive power value of each grid partition at each preset time based on the grid reactive power model; a second determination module, which is used to determine the voltage operation lower limit value and the voltage operation upper limit value of each grid partition; a first judgment module, which is used to judge whether the actual bus voltage value of each substation is within a preset range for each grid partition at each preset time, wherein the preset range is determined based on the voltage operation lower limit value and the voltage operation upper limit value; a first adding module, which is used to add the ring network excess reactive power value of the grid partition at the preset time to the preset ring network excess reactive power set when the actual bus voltage value of each substation is within the preset range; a first sorting module, Used to sort the excess reactive power values of each ring network in the preset ring network excess reactive power set to obtain the maximum ring network excess reactive power, and determine the maximum ring network excess reactive power as the steady-state reactive power of the power grid partition; a second adding module, used to add all steady-state reactive powers to the first preset set; a second judgment module, used to judge whether there is an actual bus voltage value of a substation greater than the voltage operation upper limit value; a third determination module, used to determine the ring network excess reactive power value of the power grid partition at a preset moment as the steady-state reactive power when there is an actual bus voltage value of a substation greater than the voltage operation upper limit value, and add the steady-state reactive power to the first preset set, wherein the actual bus voltage value of each substation is associated with the reactive power flow reverse, and the ring network excess reactive power value is determined based on the reactive power flow reverse.

[0092] Optionally, the flexible interconnection device location determination device includes: a first analysis module, configured to determine the fault at each preset moment based on a partition identifier and a substation identifier before analyzing each fault at each preset moment and obtaining the voltage of each fault.

[0093] Optionally, the second determination unit includes: a first screening module, used to screen all unstable voltages for each power grid partition to obtain a target unstable voltage, wherein the target unstable voltage corresponds to fault information, wherein the fault information at least includes: the fault location where the target unstable voltage occurs; a fourth determination module, used to determine the recovery voltage at the fault location and the recovery reactive power corresponding to the recovery voltage; a first construction module, used to construct a preset voltage-power curve diagram based on the target unstable voltage, reactive power, recovery voltage and recovery reactive power.

[0094] Optionally, the third determination unit includes: a third adding module, used to add the steady-state reactive power in the first preset set and the supplementary reactive power in the second preset set to the third preset set according to each preset moment; a first statistical module, used to count the frequency of occurrence of the partition identifier corresponding to each reactive power in the third preset set at different preset moments, and determine the position of the flexible interconnection device based on the frequency.

[0095] Optionally, the flexible interconnection device position determination device includes: a second sorting module, configured to numerically sort all reactive powers in a third preset set to obtain a maximum reactive power; and a fifth determination module, configured to determine the maximum reactive power as the reactive capacity of the flexible interconnection device.

[0096] The above-mentioned device for determining the position of the flexible interconnection device may further include a processor and a memory. The above-mentioned first acquisition unit 40, first determination unit 41, first analysis unit 42, second determination unit 43, third determination unit 44, etc. are all stored in the memory as program units, and the processor executes the above-mentioned program units stored in the memory to realize corresponding functions.

[0097] The processor includes a kernel, which retrieves the corresponding program unit from the memory. One or more kernels can be provided, and the position of the flexible interconnect device is determined according to the first preset set and the second preset set by adjusting kernel parameters.

[0098] The above-mentioned memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0099] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, any one of the above methods for determining the position of a flexible interconnection device is implemented.

[0100] When the computer program product is executed on a data processing device, it is suitable for executing an initialized program having the following method steps: collecting power data of the power grid at multiple preset moments, for each power grid partition, collecting the actual bus voltage value of each substation in the power grid partition at each preset moment, determining the steady-state reactive power based on the actual bus voltage value and the power data, and adding all steady-state reactive powers to a first preset set, for each power grid partition, analyzing each fault at each preset moment based on the power data to obtain the voltage and reactive power of each fault, and in the case where the voltage is an unstable voltage, constructing a preset voltage-power curve based on the unstable voltage and reactive power, and determining the supplementary reactive power based on the preset voltage-power curve, and adding the supplementary reactive power to a second preset set, and determining the position of the flexible interconnection device based on the first preset set and the second preset set.

[0101] According to another aspect of an embodiment of the present invention, an electronic device is provided, comprising one or more processors and a memory, wherein the memory is used to store one or more programs, wherein when the one or more programs are executed by one or more processors, the one or more processors implement the above-mentioned method for determining the position of the flexible interconnection device.

[0102] Figure 5 FIG. 1 is a hardware structure block diagram of an electronic device (or mobile device) for determining the position of a flexible interconnection device according to an embodiment of the present invention. Figure 5 As shown, the electronic device may include one or more processors (e.g., Figure 5 The processors 502a, 502b, ..., 502n, etc., which may include but are not limited to processing devices such as microprocessors (MCUs) or programmable logic devices (FPGAs), and a memory 504 for storing data. In addition, the processors 502a, 502b, ..., 502n, etc., may also include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the I / O interface), a network interface, a keyboard, a power supply, and / or a camera. It will be understood by those skilled in the art that Figure 5 The structure shown is only for illustration and does not limit the structure of the above electronic device. Figure 5 More or fewer components than shown, or with Figure 5 Different configurations shown.

[0103] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0104] The embodiments or examples of the present disclosure are not exhaustive, but are merely illustrations of some embodiments or examples, and are not intended to be specific limitations on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment or example can be implemented as an independent example, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment or example can also be implemented as an independent example, and the order of the steps in a certain embodiment or example can be arbitrarily exchanged. In addition, the optional methods or optional examples in a certain embodiment or example can be arbitrarily combined; in addition, the various embodiments or examples can be arbitrarily combined. For example, some or all steps of different embodiments or examples can be arbitrarily combined, and a certain embodiment or example can be arbitrarily combined with the optional methods or optional examples of other embodiments or examples.

[0105] In the above embodiments of the present invention, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0106] In the several embodiments provided by the present invention, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are merely illustrative. For example, the division of the units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, and can be electrical or other forms.

[0107] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0108] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0109] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk, etc. Various media that can store program codes.

[0110] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A method for determining the position of a flexible interconnection device, characterized in that: include: Collecting power data of a power grid at multiple preset moments, wherein the power grid includes at least: multiple power grid partitions, each of the power grid partitions includes: multiple substations, and each of the power grid partitions corresponds to a partition identifier; For each of the power grid partitions, collecting the actual bus voltage value of each of the substations in the power grid partition at each of the preset moments, determining steady-state reactive power based on the actual bus voltage value and the power data, and adding all of the steady-state reactive powers to a first preset set, wherein each steady-state reactive power is associated with the partition identifier; For each of the power grid partitions, analyzing each fault at each of the preset moments according to the power data to obtain the voltage and reactive power of each of the faults, wherein the voltage is an unstable voltage or a normal voltage; When the voltage is the instability voltage, constructing a preset voltage-power curve graph based on the instability voltage and the reactive power, determining a supplementary reactive power based on the preset voltage-power curve graph, and adding the supplementary reactive power to a second preset set, wherein the supplementary reactive power is associated with the partition identifier; The position of the flexible interconnect device is determined according to the first preset set and the second preset set.

2. The method for determining the position of a flexible interconnection device according to claim 1, wherein: Before collecting the power data of the power grid at multiple preset moments, it also includes: Numbering each of the power grid partitions of the power grid to obtain the partition identifier; Each of the substations is numbered to obtain a substation identification.

3. The method for determining the position of a flexible interconnection device according to claim 1, wherein: The step of determining steady-state reactive power based on the actual bus voltage value and the power data, and adding all the steady-state reactive powers to a first preset set includes: Based on the power data, a grid reactive power model is constructed, and based on the grid reactive power model, a ring network excess reactive power value of each grid partition at each preset time is determined; Determining a voltage operating lower limit value and a voltage operating upper limit value for each of the power grid sections; For each of the power grid partitions at each of the preset moments, determining whether the actual bus voltage value of each of the substations is within a preset range, wherein the preset range is determined based on the voltage operating lower limit value and the voltage operating upper limit value; When the actual bus voltage value of each substation is within a preset range, the ring network excess reactive power value of the power grid partition at the preset moment is added to a preset ring network excess reactive power set; Sorting each of the ring network excess reactive power values in the preset ring network excess reactive power set to obtain a maximum ring network excess reactive power, and determining the maximum ring network excess reactive power as the steady-state reactive power of the power grid partition; adding all the steady-state reactive powers to the first preset set; or, Determining whether there is an actual bus voltage value of the substation greater than the voltage operation upper limit value; In the case where there is an actual bus voltage value of the substation that is greater than the voltage operating upper limit value, the excess reactive power value of the ring network of the power grid partition at the preset moment is determined as the steady-state reactive power, and the steady-state reactive power is added to the first preset set, wherein the actual bus voltage value of each substation is associated with reactive power flow reverse transmission, and the excess reactive power value of the ring network is determined based on the reactive power flow reverse transmission.

4. The method for determining the position of a flexible interconnection device according to claim 2, wherein: Before analyzing each fault at each preset moment to obtain the voltage of each fault, the method includes: The fault at each of the preset moments is determined based on the partition identifier and the substation identifier.

5. The method for determining the position of a flexible interconnection device according to claim 1, wherein: The step of constructing a preset voltage-power curve diagram based on the unstable voltage and the reactive power includes: For each of the power grid partitions, all the unstable voltages are screened to obtain a target unstable voltage, wherein the target unstable voltage corresponds to fault information, wherein the fault information at least includes: a fault location where the target unstable voltage occurs; Determining a restoration voltage at the fault location and a restoration reactive power corresponding to the restoration voltage; The preset voltage-power curve is constructed according to the target instability voltage, the reactive power, the recovery voltage, and the recovery reactive power.

6. The method for determining the position of a flexible interconnection device according to claim 5, wherein: The step of determining the position of the flexible interconnect device according to the first preset set and the second preset set includes: According to each of the preset moments, the steady-state reactive power in the first preset set and the supplementary reactive power in the second preset set are added to a third preset set; For each partition identifier corresponding to the reactive power in the third preset set, the frequency of occurrence at different preset moments is counted, and the position of the flexible interconnection device is determined based on the frequency.

7. The method for determining the position of a flexible interconnection device according to claim 6, wherein: The method for determining the position of the flexible interconnection device further includes: Numerically sorting all reactive powers in the third preset set to obtain a maximum reactive power; The maximum reactive power is determined as the reactive capacity of the flexible interconnection device.

8. A device for determining the position of a flexible interconnection device, characterized in that: include: A first collection unit is configured to collect power data of a power grid at a plurality of preset moments, wherein the power grid comprises at least a plurality of power grid partitions, each of the power grid partitions comprises a plurality of substations, and each of the power grid partitions has a corresponding partition identifier; a first determining unit configured to collect, for each of the power grid partitions, an actual bus voltage value of each substation in the power grid partition at each preset time, determine a steady-state reactive power based on the actual bus voltage value and the power data, and add all the steady-state reactive powers to a first preset set, wherein each steady-state reactive power is associated with the partition identifier; a first analyzing unit configured to analyze, for each grid partition, each fault at each preset moment based on the power data, to obtain a voltage and reactive power of each fault, wherein the voltage is an unstable voltage or a normal voltage; a second determining unit, configured to, when the voltage is the instability voltage, construct a preset voltage-power curve graph based on the instability voltage and the reactive power, determine a supplementary reactive power based on the preset voltage-power curve graph, and add the supplementary reactive power to a second preset set, wherein the supplementary reactive power is associated with the partition identifier; The third determining unit is configured to determine a position of the flexible interconnect device according to the first preset set and the second preset set.

9. A computer program product, characterized in that The method comprises a non-volatile computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the method for determining the position of a flexible interconnection device according to any one of claims 1 to 7.

10. An electronic device, characterized in that: The method comprises one or more processors and a memory, wherein the memory is used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors implement the method for determining the position of the flexible interconnection device according to any one of claims 1 to 7.

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