Electric locomotive heavy load operation power distribution method

Abstract

The invention provides an electric locomotive heavy load operation power distribution method, and relates to the technical field of locomotive operation power control. The method comprises the following steps: acquiring locomotive information in a power supply area, and sorting based on operation importance to form regional locomotive sorting information; according to the locomotive information in the power supply area, residual reactive power capacity accounting for the network voltage is carried out, and locomotive residual reactive power capacity information is formed; and performing power distribution analysis according to the residual reactive capacity information of the locomotives in combination with the regional locomotive sorting information to form power distribution result data. According to the method, all locomotive capacities in the same power supply arm are comprehensively utilized, and reasonable allocation is carried out, so that the overall transport capacity of the locomotive is higher, the locomotive can drag more loads as much as possible, and greater economic benefits are brought into play.

Description

Technical Field

[0001] The present invention relates to the technical field of locomotive operation power control, and in particular to a method for distributing power for heavy-load operation of an electric locomotive. Background Art

[0002] Electric locomotives currently produced usually use AC-DC-AC traction inverters. The AC side of the inverter is connected to the traction power supply network through a traction transformer. Since the power supply network is inductive, a large amount of inductive reactive current flows through the traction network when the locomotive is heavily loaded for traction, causing the voltage at the locomotive connection point to be lower than the substation voltage. With the increase of power supply distance and locomotive power, the voltage drop caused by this inductive reactive current becomes more and more obvious, and may even cause the voltage to be too low, thereby reducing the traction power or even making traction impossible.

[0003] There are currently some solutions, which can be summarized into two types. One is to install a ground reactive power compensation device at the end of the power supply arm, and offset the inductive reactive power in the traction network by emitting capacitive reactive power, thereby raising the voltage at the end of the power supply arm. However, this method requires the installation of a high-power reactive power compensation device, which has a huge investment cost. The other is to use a thyristor-controlled capacitor switching device to supplement the inductive reactive power detected at the electric locomotive grid connection point. This method is simple, but it is a step-by-step switching method, and the capacitive reactive power invested cannot just compensate for the inductive reactive power.

[0004] Therefore, designing a power distribution method for heavy-load operation of electric locomotives, making comprehensive use of all locomotive capacities in the same power supply arm and reasonably allocating them to make the overall transport capacity of the locomotive stronger, allowing the locomotive to haul as much load as possible and achieve greater economic benefits, is an urgent problem to be solved. Summary of the invention

[0005] The purpose of the present invention is to provide a power distribution method for heavy-load operation of electric locomotives. The method ranks the locomotives in the same power supply section according to their operating importance and then forms a reasonable use of the compensation for the remaining reactive capacity of different locomotives. It does not require additional compensation devices on the ground and does not adopt a step-by-step switching method. At the same time, it makes the overall carrying capacity of the locomotive stronger, allowing the locomotive to haul as much load as possible and achieve greater economic benefits.

[0006] In a first aspect, the present invention provides a method for distributing power for heavy-load operation of an electric locomotive, comprising: obtaining locomotive information within a power supply area, and sorting the locomotives based on operation importance to form regional locomotive sorting information; calculating the remaining reactive capacity for high and low grid voltages based on the locomotive information within the power supply area to form locomotive remaining reactive capacity information; performing power distribution analysis based on the locomotive remaining reactive capacity information and in combination with the regional locomotive sorting information to form power distribution result data.

[0007] In the present invention, the method ranks the locomotives in the same power supply section according to their operational importance and then forms a reasonable use of the compensation for the remaining reactive capacity of different locomotives. It does not require new compensation devices on the ground and does not adopt a step-by-step switching method. At the same time, it makes the overall carrying capacity of the locomotive stronger, allowing the locomotive to haul as much load as possible and achieve greater economic benefits.

[0008] As a possible implementation method, locomotive information within the power supply area is obtained, and sorted based on operation importance to form regional locomotive sorting information, including: extracting the operation importance of different operating locomotives within the power supply area, and sorting the operating locomotives in order from large to small according to the operation importance to form regional locomotive sorting information; according to the regional locomotive sorting information, different operating locomotives are sequentially numbered.

[0009] In the present invention, the ordering according to the operation importance can give priority to locomotives with high importance when power allocation is performed later, so that the power allocation of locomotive operation in the area is more reasonable, and the locomotive operation can fully ensure that the maximum economic benefit can be achieved. The importance can be obtained by evaluating the operation parameters of the locomotive such as carrying capacity, total economic carrying capacity, etc. according to actual needs.

[0010] As a possible implementation method, the remaining reactive capacity is calculated for the high and low grid voltages according to the locomotive information in the power supply area to form the locomotive remaining reactive capacity information, including: determining the power consumption information of different running locomotives according to the locomotive information in the power supply area; analyzing the grid voltage status according to the power consumption information corresponding to different running locomotives to form the grid voltage status analysis results; analyzing the remaining reactive capacity according to the grid voltage status analysis results and in combination with the power consumption information corresponding to different running locomotives to form the locomotive remaining reactive capacity information.

[0011] In the present invention, in order to carry out reasonable power distribution, it is necessary to first obtain the power data generated by different locomotives during operation, and then analyze the grid voltage status of the power grid based on the power data, and then determine the remaining reactive capacity that can be compensated, providing important data reference for subsequent power distribution.

[0012] As a possible implementation method, the power consumption information of different running locomotives is determined according to the locomotive information in the power supply area, including: extracting the grid connection point voltage corresponding to different running locomotives according to the locomotive information in the power supply area and grid-connected current Among them, n represents the sequence number of different locomotives in the power supply area according to the regional locomotive sorting information; according to the grid connection point voltage corresponding to different running locomotives and grid-connected current Determine the corresponding active power and reactive power

[0013] In the present invention, the power of the locomotive includes two parts: active power and reactive power. In particular, the reactive power part is an important factor affecting power distribution.

[0014] As a possible implementation method, according to the power consumption information corresponding to different running locomotives, the power grid voltage status analysis is performed to form the power grid voltage status analysis results, including: setting the normal operation grid voltage threshold α, obtaining the grid connection point voltage corresponding to the running locomotive with the greatest running importance in the regional locomotive sorting information And the following electricity

[0015] Grid pressure status analysis: When the power grid voltage status is normal, the information is formed; when When the power grid voltage is abnormally low, information is generated.

[0016] In the present invention, the grid voltage needs to be at a reasonable level to ensure sufficient power for the locomotive. According to the importance of locomotive operation, the most important thing to be satisfied first is that the locomotive will not be shut down due to low grid voltage.

[0017] As a possible implementation method, according to the grid voltage status analysis results and combined with the power consumption information corresponding to different running locomotives, the residual reactive capacity analysis is performed to form the locomotive residual reactive capacity information, including: when the grid voltage status analysis result is abnormally low grid voltage information, the traction converter rated power corresponding to different running locomotives in the power supply area is obtained. and active power Determine the locomotive residual power corresponding to different running locomotives in, According to the locomotive residual power corresponding to different locomotives in the power supply area Determine the relative total remaining power of all running locomotives except the running locomotive with the greatest running importance in:

[0018]

[0019] In the present invention, when the grid voltage is too low, it is necessary to distribute power to the locomotives running in the grid. The main content of power distribution is to compensate the remaining power of the locomotives by inputting it into the grid, so that the grid can supply sufficient energy to the locomotives again. Since the operation of the most important locomotive must be considered, it is necessary to obtain the total remaining power information of other locomotives except the most important locomotive to determine whether the grid can realize the compensation of the remaining power invested by other locomotives and operate correctly.

[0020] As a possible implementation method, power allocation analysis is performed based on locomotive remaining reactive capacity information and regional locomotive ranking information to form power allocation result data, including: obtaining the reactive power of the most important running locomotive in the power supply area and the relative total remaining power in the power supply area According to reactive power and the relative total remaining power Perform the following power allocation analysis: Then perform fully compensated power allocation processing to form fully compensated power allocation data; if Then, the power allocation processing of equal compensation is performed to form the power allocation data of equal compensation; if Then, incomplete compensation power allocation processing is performed to form incomplete compensation power allocation data.

[0021] In the present invention, there are three situations for comparing the total surplus power information of locomotives other than the most important locomotive with the reactive power of the most important locomotive, and the three different situations correspond to different power allocation methods, that is, different surplus power compensation methods, to ensure that the locomotive with the greatest power can operate normally.

[0022] As a possible implementation method, if Then, a fully compensated power allocation process is performed to form fully compensated power allocation data, including: extracting the locomotive remaining power corresponding to the running locomotives except the running locomotive with the greatest running importance in the order of the running importance from small to large in the regional locomotive sorting information; And in turn as capacitive reactive power into the power grid in the power supply area until it meets Stop investing.

[0023] In the present invention, when the total surplus power information of locomotives other than the most important locomotive is greater than the reactive power of the most important locomotive, it can be explained that the surplus power is sufficient to supplement the reactive power, and all locomotives can achieve normal operation.

[0024] As a possible implementation method, if Then, the power allocation processing of equal compensation is performed to form the equal compensation power allocation data, including: extracting the locomotive remaining power corresponding to the running locomotives except the running locomotive with the greatest running importance in the order of the running importance from small to large in the locomotive sorting information of the regional locomotives; And in turn, they are all put into the power grid in the power supply area as capacitive reactive power.

[0025] In the present invention, when the total surplus power information of locomotives other than the most important locomotive is equal to the reactive power of the most important locomotive, it can be explained that the surplus power just complements the reactive power and all locomotives can achieve normal operation.

[0026] As a possible implementation method, if Then, the incomplete compensation power allocation processing is performed to form the incomplete compensation power allocation data, including: extracting the locomotive remaining power corresponding to the running locomotives except the running locomotive with the greatest running importance in the order of the running importance from small to large in the regional locomotive sorting information; And in turn, they are all put into the power grid in the power supply area as capacitive reactive power.

[0027] In the present invention, when the total remaining power information of locomotives other than the most important locomotive is less than the reactive power of the most important locomotive, it means that the power compensation cannot fully supplement the reactive power. Therefore, it is necessary to compensate in sequence according to the order of importance. At the very least, the most important locomotive must be able to achieve normal operation. Of course, external energy can also be introduced for compensation.

[0028] The beneficial effects of the power distribution method for heavy-load operation of an electric locomotive provided by the present invention are as follows:

[0029] This method ranks the locomotives in the same power supply section according to their operational importance, and then forms a reasonable compensation method for the remaining reactive capacity of different locomotives. It does not require new compensation devices on the ground, and does not adopt a step-by-step switching method. At the same time, it makes the overall transport capacity of the locomotive stronger, allowing the locomotive to haul as much load as possible and achieve greater economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0031] Figure 1A schematic diagram of a method for allocating power for heavy-load operation of an electric locomotive provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] Electric locomotives currently produced usually use AC-DC-AC traction inverters. The AC side of the inverter is connected to the traction power supply network through a traction transformer. Since the power supply network is inductive, a large amount of inductive reactive current flows through the traction network when the locomotive is heavily loaded for traction, causing the voltage at the locomotive connection point to be lower than the substation voltage. With the increase of power supply distance and locomotive power, the voltage drop caused by this inductive reactive current becomes more and more obvious, and may even cause the voltage to be too low, thereby reducing the traction power or even making traction impossible.

[0034] There are currently some solutions, which can be summarized into two types. One is to install a ground reactive power compensation device at the end of the power supply arm, and offset the inductive reactive power in the traction network by emitting capacitive reactive power, thereby raising the voltage at the end of the power supply arm. However, this method requires the installation of a high-power reactive power compensation device, which has a huge investment cost. The other is to use a thyristor-controlled capacitor switching device to supplement the inductive reactive power detected at the electric locomotive grid connection point. This method is simple, but it is a step-by-step switching method, and the capacitive reactive power invested cannot just compensate for the inductive reactive power.

[0035] refer to Figure 1 An embodiment of the present invention provides a method for allocating power for heavy-load operation of an electric locomotive. The method ranks the locomotives in the same power supply section according to their operating importance, and then forms a reasonable use of compensation for the remaining reactive capacity of different locomotives. This method does not require additional compensation devices on the ground, and does not adopt a step-by-step switching method. At the same time, it makes the overall transport capacity of the locomotive stronger, allowing the locomotive to haul as much load as possible and achieve greater economic benefits.

[0036] The method specifically comprises the following steps:

[0037] S1: Obtain locomotive information within the power supply area, and sort them based on operation importance to form regional locomotive sorting information.

[0038] The locomotive information in the power supply area is obtained, and the locomotive information is sorted based on the operation importance to form the regional locomotive sorting information, including: extracting the operation importance of different operating locomotives in the power supply area, and sorting the operating locomotives in descending order according to the operation importance to form the regional locomotive sorting information; according to the regional locomotive sorting information, different operating locomotives are sequentially numbered.

[0039] Sorting by operational importance can give priority to locomotives with high importance when allocating power in the future, making the power allocation of locomotives in the area more reasonable and fully ensuring that locomotive operation can achieve the maximum economic benefits. Importance can be obtained by evaluating the locomotive's operating parameters such as carrying capacity and total economic carrying capacity according to actual needs.

[0040] S2: According to the locomotive information in the power supply area, the remaining reactive capacity is calculated for the high and low grid voltage to form the locomotive remaining reactive capacity information.

[0041] According to the locomotive information in the power supply area, the residual reactive capacity is calculated for the high and low grid voltage to form the locomotive residual reactive capacity information, including: determining the power consumption information of different running locomotives according to the locomotive information in the power supply area; analyzing the grid voltage status according to the power consumption information corresponding to different running locomotives to form the grid voltage status analysis result; according to the grid voltage status analysis result and in combination with the power consumption information corresponding to different running locomotives, performing residual reactive capacity analysis to form the locomotive residual reactive capacity information.

[0042] To carry out reasonable power distribution, it is necessary to first obtain the power data generated by different locomotives during operation, and then analyze the grid voltage status based on the power data, and then determine the remaining reactive capacity that can be compensated, providing important data reference for subsequent power distribution.

[0043] According to the locomotive information in the power supply area, determine the power consumption information of different running locomotives, including: according to the locomotive information in the power supply area, extract the grid connection point voltage corresponding to different running locomotives and grid-connected current Among them, n represents the sequence number of different locomotives in the power supply area according to the regional locomotive sorting information; according to the grid connection point voltage corresponding to different running locomotives and grid-connected current Determine the corresponding active power and reactive power

[0044] The power of a locomotive includes two parts: active power and reactive power. In particular, the reactive power part is an important factor affecting power distribution.

[0045] According to the power consumption information corresponding to different running locomotives, the power grid voltage status analysis is performed to form the power grid voltage status analysis results, including: setting the normal operation grid voltage threshold α, obtaining the grid connection point voltage corresponding to the running locomotive with the greatest running importance in the regional locomotive sorting information And conduct the following grid voltage status analysis: When the power grid voltage status is normal, the information is formed; when When the power grid voltage is abnormally low, information is generated.

[0046] The grid voltage needs to be at a reasonable level to ensure sufficient power for the locomotive. According to the importance of the locomotive operation, the most important thing to be met first is that the locomotive will not be shut down due to low grid voltage.

[0047] According to the grid voltage status analysis results, combined with the power consumption information of different running locomotives, the residual reactive capacity analysis is performed to form the locomotive residual reactive capacity information, including: when the grid voltage status analysis result is abnormally low grid voltage information, the traction converter rated power corresponding to different running locomotives in the power supply area is obtained and active power Determine the locomotive residual power corresponding to different running locomotives in, According to the locomotive residual power corresponding to different locomotives in the power supply area Determine the relative total remaining power of all running locomotives except the running locomotive with the greatest running importance in:

[0048]

[0049] When the grid voltage is too low, it is necessary to distribute power to the locomotives running in the grid. The main content of power distribution is to compensate the locomotive's surplus power by inputting it into the grid, so that the grid can supply sufficient energy to the locomotive again. Since the operation of the most important locomotive must be considered, in order to determine whether the grid can compensate for the surplus power invested by other locomotives and operate correctly, it is necessary to obtain the total surplus power information of other locomotives except the most important locomotive.

[0050] S3: Perform power allocation analysis based on the locomotive remaining reactive capacity information and combined with the regional locomotive sorting information to form power allocation result data.

[0051] According to the locomotive remaining reactive capacity information, combined with the regional locomotive ranking information, power allocation analysis is performed to form power allocation result data, including: obtaining the reactive power of the most important running locomotive in the power supply area and the relative total remaining power in the power supply area According to reactive power and the relative total remaining power Perform the following power allocation analysis: Then perform fully compensated power allocation processing to form fully compensated power allocation data; if Then, the power allocation processing of equal compensation is performed to form the power allocation data of equal compensation; if Then, incomplete compensation power allocation processing is performed to form incomplete compensation power allocation data.

[0052] There are three situations when comparing the total surplus power information of locomotives other than the most important locomotive with the reactive power of the most important locomotive. The three different situations correspond to different power allocation methods, that is, different surplus power compensation methods, to ensure that the locomotive with the greatest power can operate normally.

[0053] like Then, a fully compensated power allocation process is performed to form fully compensated power allocation data, including: extracting the locomotive remaining power corresponding to the running locomotives except the running locomotive with the greatest running importance in the order of the running importance from small to large in the regional locomotive sorting information; And in turn as capacitive reactive power into the power grid in the power supply area until it meets Stop investing.

[0054] In the case where the total surplus power information of locomotives other than the most important locomotive is greater than the reactive power of the most important locomotive, it can be explained that the surplus power is sufficient to supplement the reactive power and all locomotives can achieve normal operation.

[0055] like Then, the power allocation processing of equal compensation is performed to form the equal compensation power allocation data, including: extracting the locomotive remaining power corresponding to the running locomotives except the running locomotive with the greatest running importance in the order of the running importance from small to large in the locomotive sorting information of the regional locomotives; And in turn, they are all put into the power grid in the power supply area as capacitive reactive power.

[0056] In the case where the total surplus power information of locomotives other than the locomotive with the greatest importance is equal to the reactive power of the locomotive with the greatest importance, it can be explained that the surplus power just complements the reactive power and all locomotives can achieve normal operation.

[0057] like Then, the incomplete compensation power allocation processing is performed to form the incomplete compensation power allocation data, including: extracting the locomotive remaining power corresponding to the running locomotives except the running locomotive with the greatest running importance in the order of the running importance from small to large in the regional locomotive sorting information; And in turn, they are all put into the power grid in the power supply area as capacitive reactive power.

[0058] In the case where the total remaining power information of locomotives other than the most important locomotive is less than the reactive power of the most important locomotive, it means that the power compensation cannot fully supplement the reactive power. Therefore, it is necessary to compensate in sequence according to the order of importance. At the very least, the most important locomotive must be able to operate normally. Of course, external energy can also be introduced for compensation.

[0059] In summary, the power distribution method for heavy-load operation of electric locomotives provided by the embodiments of the present invention has the following beneficial effects:

[0060] This method ranks the locomotives in the same power supply section according to their operational importance, and then forms a reasonable compensation method for the remaining reactive capacity of different locomotives. It does not require new compensation devices on the ground, and does not adopt a step-by-step switching method. At the same time, it makes the overall transport capacity of the locomotive stronger, allowing the locomotive to haul as much load as possible and achieve greater economic benefits.

[0061] In the embodiments of the present application, "indication" may include direct indication and indirect indication, and may also include explicit indication and implicit indication. The information indicated by a certain information is called information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as but not limited to, the information to be indicated can be directly indicated, such as the information to be indicated itself or the index of the information to be indicated. The information to be indicated can also be indirectly indicated by indicating other information, wherein there is an association between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information can also be achieved by means of the arrangement order of each piece of information agreed in advance (for example, specified by the protocol), thereby reducing the indication overhead to a certain extent. At the same time, the common parts of each piece of information can also be identified and indicated uniformly to reduce the indication overhead caused by indicating the same information separately.

[0062] In addition, the specific indication method may also be various existing indication methods, such as but not limited to the above-mentioned indication methods and various combinations thereof. The specific details of the various indication methods can refer to the prior art and will not be repeated herein. As can be seen from the above, for example, when it is necessary to indicate multiple information of the same type, different indication methods may be used for different information. In the specific implementation process, the desired indication method can be selected according to specific needs. The embodiment of the present application does not limit the selected indication method. In this way, the indication method involved in the embodiment of the present application should be understood to cover various methods that can enable the party to be indicated to obtain the information to be indicated.

[0063] It should be understood that the information to be indicated can be sent as a whole, or divided into multiple sub-information and sent separately, and the sending period and / or sending time of these sub-information can be the same or different. The specific sending method is not limited in the embodiment of the present application. Among them, the sending period and / or sending time of these sub-information can be pre-defined, for example, pre-defined according to a protocol, or can be configured by the sending end device by sending configuration information to the receiving end device.

[0064] "Pre-definition" or "pre-configuration" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in the device, and the embodiments of the present application do not limit the specific implementation method. Among them, "saving" can mean saving in one or more memories. The one or more memories can be set separately or integrated in an encoder or decoder, a processor, or a communication device. The one or more memories can also be partially set separately and partially integrated in a decoder, a processor, or a communication device. The type of memory can be any form of storage medium, which is not limited by the embodiments of the present application.

[0065] The "protocol" involved in the embodiments of the present application may refer to a protocol family in the communication field, a standard protocol with a similar protocol family frame structure, or a related protocol used in future communication systems, and the embodiments of the present application do not make specific limitations on this.

[0066] In the embodiments of the present application, descriptions such as "when...", "in the case of...", "if" and "if" all mean that the device will make corresponding processing under certain objective circumstances. It does not limit the time, nor does it require the device to have a judgment action when implementing it, nor does it mean that there are other limitations.

[0067] In the description of the embodiments of the present application, unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship, for example, A / B can represent A or B; "and / or" in the embodiments of the present application is only a description of the association relationship of the associated objects, indicating that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In addition, in the description of the embodiments of the present application, unless otherwise specified, "multiple" refers to two or more than two. "At least one of the following" or its similar expression refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple. In addition, in order to facilitate the clear description of the technical solution of the embodiments of the present application, in the embodiments of the present application, the words "first" and "second" are used to distinguish the same or similar items with basically the same functions and effects. Those skilled in the art will appreciate that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit the difference. At the same time, in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way for easy understanding.

[0068] It should be understood that the processor in the embodiments of the present application may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0069] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0070] The above embodiments can be implemented in whole or in part by software, hardware (such as circuits), firmware or any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that contains one or more available media sets. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a tape), an optical medium (for example, a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state hard disk.

[0071] It should be understood that the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship, but it may also indicate an "and / or" relationship. Please refer to the context for specific understanding.

[0072] In this application, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can be represented by: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0073] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0074] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0075] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0076] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0077] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0078] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0079] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0080] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for distributing power during heavy-load operation of an electric locomotive, characterized in that: include: Obtain locomotive information within the power supply area, and sort them based on operation importance to form regional locomotive sorting information; According to the locomotive information in the power supply area, the remaining reactive capacity is calculated for the high and low grid voltage to form the locomotive remaining reactive capacity information; Power allocation analysis is performed based on the locomotive remaining reactive capacity information and combined with the regional locomotive sequencing information to form power allocation result data.

2. The method for distributing power for heavy-load operation of electric locomotive according to claim 1, characterized in that: The obtaining of locomotive information in the power supply area and sorting based on operation importance to form regional locomotive sorting information includes: Extracting the operation importance of different running locomotives in the power supply area, and sorting the running locomotives in descending order of the operation importance, to form the regional locomotive sorting information; The different running locomotives are numbered sequentially according to the regional locomotive sorting information.

3. The method for distributing power for heavy-load operation of electric locomotive according to claim 2, characterized in that: The method of calculating the remaining reactive capacity according to the high and low grid voltage according to the locomotive information in the power supply area to form the locomotive remaining reactive capacity information includes: Determining the power consumption information of different running locomotives according to the locomotive information in the power supply area; According to the electric power information corresponding to the different running locomotives, a power grid voltage status analysis is performed to form a power grid voltage status analysis result; According to the analysis result of the grid voltage status and in combination with the power consumption information corresponding to different running locomotives, residual reactive capacity analysis is performed to form the locomotive residual reactive capacity information.

4. The method for distributing power for heavy-load operation of electric locomotive according to claim 3, characterized in that: The step of determining the power consumption information of different running locomotives according to the locomotive information in the power supply area includes: According to the locomotive information in the power supply area, the grid connection point voltage corresponding to different running locomotives is extracted and grid-connected current Wherein, n represents the sequence number of different running locomotives in the power supply area formed according to the locomotive sorting information in the area; According to the grid connection point voltage corresponding to different running locomotives and the grid-connected current Determine the corresponding active power and reactive power 5. The method for distributing power for heavy-load operation of electric locomotive according to claim 4, characterized in that: The performing of grid voltage status analysis based on the power consumption information corresponding to different running locomotives to form a grid voltage status analysis result includes: Set a normal operation network voltage threshold α, and obtain the grid connection point voltage corresponding to the operating locomotive with the greatest operation importance in the regional locomotive sorting information And conduct the following grid voltage status analysis: when When the power grid voltage status is normal, the information is formed; when When the power grid voltage is abnormally low, information is generated.

6. The method for distributing power for heavy-load operation of electric locomotive according to claim 5, characterized in that: The residual reactive capacity analysis is performed based on the analysis result of the grid voltage state and in combination with the power consumption information corresponding to different running locomotives to form the residual reactive capacity information of the locomotive, including: When the grid voltage status analysis result is that the grid voltage is abnormally low, the traction converter rated power corresponding to different running locomotives in the power supply area is obtained. and the active power Determine the locomotive residual power corresponding to the different running locomotives in, According to the locomotive residual power corresponding to different running locomotives in the power supply area Determine the relative total remaining power of all the running locomotives except the running locomotive with the greatest running importance in:

7. The method for distributing power for heavy-load operation of electric locomotive according to claim 6, characterized in that: The power allocation analysis is performed based on the locomotive remaining reactive capacity information and in combination with the regional locomotive sequencing information to form power allocation result data, including: Obtaining the reactive power of the operating locomotive with the greatest operating importance in the power supply area and the relative total remaining power in the power supply area According to the reactive power and the relative total remaining power Perform power allocation analysis in the following ways: like Then, a fully compensated power allocation process is performed to form fully compensated power allocation data; like Then, a power allocation process of equal compensation is performed to form equal compensation power allocation data; like Then, incomplete compensation power allocation processing is performed to form incomplete compensation power allocation data.

8. The method for distributing power for heavy-load operation of electric locomotive according to claim 7, characterized in that: If Then, a fully compensated power allocation process is performed to form fully compensated power allocation data, including: The locomotive remaining power corresponding to the running locomotives other than the running locomotive with the greatest running importance is extracted in order from small to large according to the locomotives in the regional locomotive sorting information. And in turn as capacitive reactive power into the power grid of the power supply area until the Stop investing.

9. The method for distributing power for heavy-load operation of electric locomotive according to claim 8, characterized in that: If Then, a power allocation process of equal compensation is performed to form equal compensation power allocation data, including: The locomotive remaining power corresponding to the running locomotives other than the running locomotive with the greatest running importance is extracted in order from small to large according to the locomotives in the regional locomotive sorting information. And in turn, all of them are put into the power grid in the power supply area as capacitive reactive power.

10. The method for distributing power for heavy-load operation of electric locomotive according to claim 9, characterized in that: If Then, incomplete compensation power allocation processing is performed to form incomplete compensation power allocation data, including: The locomotive remaining power corresponding to the running locomotives other than the running locomotive with the greatest running importance is extracted in order from small to large according to the locomotives in the regional locomotive sorting information. And in turn, all of them are put into the power grid in the power supply area as capacitive reactive power.

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