Railway integrated energy storage system planning regulation and control method and system

Abstract

The invention relates to the field of energy storage, in particular to a railway comprehensive energy storage system planning regulation and control method and system, and the method comprises the steps: predicting first electric energy characteristic data of all renewable energy storage nodes of a railway network based on weather data along the railway network, and constructing a global energy storage state map; correcting the global energy storage state map based on the second electric energy characteristic data of all hydrogen-electricity coupling nodes of the railway network; power supply fluctuation characteristics of the traction network are obtained based on train electric energy supply data of a track line in the railway network, and the electric energy regulation and control state of the traction network by the renewable energy storage nodes and / or the hydrogen-electricity coupling nodes is adjusted in combination with the global energy storage state map; on the basis of train running data of the track lines, the operation busy and idle characteristics of the traction network are determined, and electric energy regulation and control between hydrogen-electricity coupling nodes of different track lines are carried out in combination with the global energy storage state map. Diversity of power supply modes of the high-speed railway is achieved through the energy storage system, and the degree of dependence on power supply of a single power grid is reduced.

Description

[Technical field]

[0001] The present invention relates to the field of energy storage, and in particular to a planning and control method and system for a railway integrated energy storage system. [Background technology]

[0002] my country's electrified railway technology is developing rapidly, and high-speed railway has become the main direction of railway development. The development and operation of high-speed railway is inseparable from a stable and safe power supply system. Existing high-speed railways are completely dependent on power grids. When encountering typhoons or severe convective weather that damages the power grid or the power grid itself fails, it will affect the normal and continuous power supply of the power grid to high-speed railways, resulting in train suspension, and the safety and reliability of railway transportation cannot be guaranteed.

[0003] The traction network of high-speed railway is connected to the power grid, and electricity is transmitted to the traction network (such as the traction substation under it) through the power grid to realize the power supply of high-speed railway. At the same time, in order to ensure the effective connection with the power grid, the traction network needs to be configured with dual redundancy, which undoubtedly increases the cost of high-speed railway hardware construction. In addition, the high-power, asymmetric and high-impact power demand of high-speed railway itself will increase the peak-shaving pressure of the power grid itself, which will put higher requirements on the operation performance of the power grid, and will also cause a greater impact on the power grid and increase the uncertainty of power grid operation. Therefore, how to use energy storage systems to achieve the diversity of power supply methods for high-speed railways, reduce the dependence of high-speed railways on single power grid power supply, and apply renewable energy and hydrogen-electric coupling technology to the power supply system of high-speed railways to reduce the carbon emissions of high-speed railways is of great significance for the comprehensive management of power quality of high-speed railways, reducing construction and electricity costs, and ensuring safe and stable operation. [Summary of the invention]

[0004] In order to use energy storage systems to achieve the diversity of power supply modes for high-speed railways, reduce the dependence of high-speed railways on a single power grid, and apply renewable energy and hydrogen-electricity coupling technology to the power supply system of high-speed railways, so as to reduce the carbon emissions of high-speed railways, comprehensively manage the power quality of high-speed railways, reduce construction and electricity costs, and ensure safe and stable operation, the present invention provides a method for planning and controlling a railway comprehensive energy storage system, the method comprising the following steps:

[0005] Acquire weather data along the railway network, and based on the weather data, predict first electric energy characteristic data of each of all renewable energy storage nodes in the railway network, thereby constructing a global energy storage status map of the railway network; and modify the global energy storage status map based on second electric energy characteristic data of each of all hydrogen-electric coupling nodes in the railway network;

[0006] Acquire train power supply data of a track line within the railway network, analyze the train power supply data, and obtain power supply fluctuation characteristics of the traction network corresponding to the track line; based on the power supply fluctuation characteristics and the corrected global energy storage state map, adjust the power control state of the renewable energy storage node and / or hydrogen-electric coupling node of the track line to the traction network;

[0007] Based on the train travel data of the track line, the busy and idle operation characteristics of the traction network are determined; based on the busy and idle operation characteristics and the revised global energy storage status map, the power regulation between the hydrogen-electric coupling nodes of the track line and other adjacent track lines is carried out.

[0008] Preferably, weather data along the railway network is obtained, and based on the weather data, first electric energy characteristic data of each of all renewable energy storage nodes in the railway network is predicted to construct a global energy storage state map of the railway network; based on second electric energy characteristic data of each of all hydrogen-electric coupling nodes in the railway network, the global energy storage state map is corrected, specifically:

[0009] Based on the geographical location along the railway network, meteorological satellite data along the railway network is obtained; wherein the meteorological satellite data includes satellite cloud map data and satellite radar echo data along the railway network; based on the meteorological satellite data, the wind energy and solar energy status information along the railway network is predicted; and based on the wind energy and solar energy status information, the first electric energy characteristic data of each renewable energy storage node in the railway network is predicted; wherein the first electric energy characteristic data includes the electricity generation data of each renewable energy storage node during the entire working period; then the first electric energy characteristic data of each renewable energy storage node and its location information are correlated and mapped to construct a global energy storage status map of the railway network;

[0010] The power supply and recovery data of all hydrogen-electric coupling nodes in the railway network are obtained, and combined with the grid connection characteristics between all hydrogen-electric coupling nodes and all renewable energy storage nodes, the external power transmission status of all renewable energy storage nodes and the power recovery status of all hydrogen-electric coupling nodes in the global energy storage status map are corrected.

[0011] Preferably, train power supply data of a track line within the railway network is obtained, and the train power supply data is analyzed to obtain power supply fluctuation characteristics of the traction network corresponding to the track line, specifically:

[0012] Based on a train operation table of a track line within the railway network, determine the train power supply data of the track line during the entire operation period; wherein the train power supply data includes the power supply amount change data of the track line to the train running on the track line during the entire operation period;

[0013] Performing time domain analysis on the train power supply data to determine the peak and trough distribution characteristics of power supply from the track line to the train during the entire working period; determining the power supply fluctuation characteristics of the traction network corresponding to the track line to the train during the entire working period based on the power supply peak and trough distribution characteristics; wherein the power supply fluctuation characteristics include the distribution characteristics of the power supply gap intervals of the traction network to the train during the entire working period.

[0014] Preferably, based on the power supply fluctuation characteristics and the corrected global energy storage state map, the power control state of the renewable energy storage node and / or the hydrogen-electric coupling node of the track line on the traction network is adjusted, specifically:

[0015] Based on the power supply fluctuation characteristics and the corrected global energy storage state map, determine the renewable energy storage nodes and / or hydrogen-electricity coupling nodes of the traction network that can compensate for the power supply gap of the traction network during the power supply gap interval for the train;

[0016] Based on the energy storage situation of the renewable energy storage node capable of compensating for the power supply gap during the power supply gap interval, the renewable energy storage node is controlled to perform independent power regulation on the traction network, or the renewable energy storage node and the hydrogen-electricity coupling node are controlled to perform joint power regulation on the traction network.

[0017] Preferably, based on the train travel data of the track line, the busy and idle operation characteristics of the traction network are determined; based on the busy and idle operation characteristics and the corrected global energy storage state map, the electric energy between the hydrogen-electric coupling nodes of the track line and other adjacent track lines is regulated, specifically:

[0018] Based on the train travel time interval data of the track line, determine whether the power supply load of each unit time section under the traction network during the entire working period exceeds the preset load threshold; if it exceeds, determine the corresponding unit time section as the operation busy time section of the traction network; if it does not exceed, determine the corresponding unit time section as the operation idle time section of the traction network; and then generate the operation busy and idle characteristics of the traction network based on the time domain distribution of all the operation busy time sections and all the operation idle time sections;

[0019] Based on the busy and idle operation characteristics and the revised global energy storage status map, the external power supply of all hydrogen-electricity coupling nodes corresponding to the track line during the busy operation time period and the remaining power during the idle operation time period are determined; based on the external power supply and the remaining power, two-way power regulation is performed between the hydrogen-electricity coupling nodes of the track line and other adjacent track lines.

[0020] On the other hand, the present invention provides a railway integrated energy storage system planning and control system, the system comprising the following modules:

[0021] An energy storage status map construction module is used to obtain weather data along the railway network, and based on the weather data, predict the first electric energy characteristic data of each of all renewable energy storage nodes in the railway network, so as to construct a global energy storage status map of the railway network;

[0022] An energy storage state map correction module, used to correct the global energy storage state map based on the second electric energy characteristic data of each of all hydrogen-electric coupling nodes in the railway network;

[0023] A traction network power supply fluctuation determination module is used to obtain train power supply data of a track line within the railway network, analyze the train power supply data, and obtain power supply fluctuation characteristics of the traction network corresponding to the track line;

[0024] A traction network power control module, used to adjust the power control state of the traction network by the renewable energy storage nodes and / or hydrogen-electric coupling nodes of the track line based on the power supply fluctuation characteristics and the corrected global energy storage state map;

[0025] A traction network operation busy and idle determination module, used to determine the operation busy and idle characteristics of the traction network based on the train travel data of the track line;

[0026] The inter-track power control module is used to control the power between the hydrogen-electric coupling nodes of the track line and other adjacent track lines based on the busy and idle operation characteristics and the revised global energy storage status map.

[0027] Preferably, the energy storage status map construction module obtains weather data along the railway network, and based on the weather data, predicts the first electric energy characteristic data of each of all renewable energy storage nodes in the railway network, so as to construct a global energy storage status map of the railway network, specifically:

[0028] Based on the geographical location along the railway network, meteorological satellite data along the railway network is obtained; wherein the meteorological satellite data includes satellite cloud map data and satellite radar echo data along the railway network; based on the meteorological satellite data, the wind energy and solar energy status information along the railway network is predicted; and based on the wind energy and solar energy status information, the first electric energy characteristic data of each renewable energy storage node in the railway network is predicted; wherein the first electric energy characteristic data includes the electricity generation data of each renewable energy storage node during the entire working period; then the first electric energy characteristic data of each renewable energy storage node and its location information are correlated and mapped to construct a global energy storage status map of the railway network;

[0029] The energy storage state map correction module corrects the global energy storage state map based on the second electric energy characteristic data of each of all hydrogen-electric coupling nodes in the railway network, specifically:

[0030] The power supply and recovery data of all hydrogen-electric coupling nodes in the railway network are obtained, and combined with the grid connection characteristics between all hydrogen-electric coupling nodes and all renewable energy storage nodes, the external power transmission status of all renewable energy storage nodes and the power recovery status of all hydrogen-electric coupling nodes in the global energy storage status map are corrected.

[0031] Preferably, the traction network power supply fluctuation determination module obtains train power supply data of a track line inside the railway network, analyzes the train power supply data, and obtains the power supply fluctuation characteristics of the traction network corresponding to the track line, specifically:

[0032] Based on a train operation table of a track line within the railway network, determine the train power supply data of the track line during the entire operation period; wherein the train power supply data includes the power supply amount change data of the track line to the train running on the track line during the entire operation period;

[0033] Performing time domain analysis on the train power supply data to determine the peak and trough distribution characteristics of power supply from the track line to the train during the entire working period; determining the power supply fluctuation characteristics of the traction network corresponding to the track line to the train during the entire working period based on the power supply peak and trough distribution characteristics; wherein the power supply fluctuation characteristics include the distribution characteristics of the power supply gap intervals of the traction network to the train during the entire working period.

[0034] Preferably, the traction network power control module adjusts the power control state of the traction network by the renewable energy storage node and / or the hydrogen-electric coupling node of the track line based on the power supply fluctuation characteristics and the corrected global energy storage state map, specifically:

[0035] Based on the power supply fluctuation characteristics and the corrected global energy storage state map, determine the renewable energy storage nodes and / or hydrogen-electricity coupling nodes of the traction network that can compensate for the power supply gap of the traction network during the power supply gap interval for the train;

[0036] Based on the energy storage situation of the renewable energy storage node capable of compensating for the power supply gap during the power supply gap interval, the renewable energy storage node is controlled to perform independent power regulation on the traction network, or the renewable energy storage node and the hydrogen-electricity coupling node are controlled to perform joint power regulation on the traction network.

[0037] Preferably, the traction network operation busy / idle determination module determines the operation busy / idle characteristics of the traction network based on the train travel data of the track line, specifically:

[0038] Based on the train travel time interval data of the track line, determine whether the power supply load of each unit time section under the traction network during the entire working period exceeds the preset load threshold; if it exceeds, determine the corresponding unit time section as the operation busy time section of the traction network; if it does not exceed, determine the corresponding unit time section as the operation idle time section of the traction network; and then generate the operation busy and idle characteristics of the traction network based on the time domain distribution of all the operation busy time sections and all the operation idle time sections;

[0039] The inter-track power control module performs power control between the hydrogen-electric coupling nodes of the track line and other adjacent track lines based on the busy and idle operation characteristics and the modified global energy storage state map, specifically:

[0040] Based on the busy and idle operation characteristics and the revised global energy storage status map, the external power supply of all hydrogen-electricity coupling nodes corresponding to the track line during the busy operation time period and the remaining power during the idle operation time period are determined; based on the external power supply and the remaining power, two-way power regulation is performed between the hydrogen-electricity coupling nodes of the track line and other adjacent track lines.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] Renewable energy storage nodes are set up in a distributed manner at different locations of the railway network. Each renewable energy storage node can convert wind energy and solar energy in its own area into electrical energy and store it. At the same time, the renewable energy storage node is also connected to the traction network of the railway network, which can supply power to the traction network, realize the diversification of the power supply of the traction network, and reduce the railway network's dependence on a single power grid. The power generation of the renewable energy storage node depends on the amount of wind and solar energy resources in its own area. By predicting the weather conditions in the area where the renewable energy storage node is located, it is possible to accurately predict the amount of power generation of the renewable energy storage node in the future in advance, and provide an accurate basis for the subsequent power regulation between the renewable energy storage node and the traction network. To this end, weather data along the railway network is obtained, the weather data is analyzed, and the first electrical energy characteristic data of all renewable energy storage nodes in the railway network are predicted to accurately characterize the renewable electricity generation state of each renewable energy storage node.

[0043] And according to the first electric energy characteristic data of all renewable energy storage nodes in the railway network, a global energy storage status map of the railway network is constructed, and the renewable electric energy generation status of all renewable energy storage nodes is associated with the airspace level of the railway network to generate a global energy storage status map, and the energy storage situation of the inaccessible positions of the railway network is intuitively and comprehensively characterized. In addition, considering that the electric energy storage capacity of the renewable energy storage nodes themselves is limited, hydrogen-electric coupling nodes are also set in a distributed form at different locations of the railway network to realize supplementary power supply and storage for the railway network. Each hydrogen-electric coupling node is connected to the corresponding renewable energy storage node and directly connected to the traction network of the railway network, and can store the excess electric energy of the renewable energy storage node. When the subsequent renewable storage node cannot stably generate renewable electric energy, electric energy feedback is performed to further improve the power supply stability of the energy storage system. For this reason, based on the second electric energy characteristic data of all hydrogen-electric coupling nodes in the railway network, the global energy storage status map is corrected, so that the corrected global energy storage status map can comprehensively characterize the supplementary supply of electric energy by the hydrogen-electric coupling nodes within the railway network.

[0044] The energy storage system of the railway network provides auxiliary power supply to the traction network corresponding to a track line when a train passes through the track line. In order to ensure the accurate power supply of the energy storage system to the traction network, the train power supply data of a track line inside the railway network is obtained, and the train power supply data is analyzed to obtain the power supply fluctuation characteristics of the traction network corresponding to the track line to the train, so as to quantitatively determine the peak and valley distribution of the traction network in the process of power supplying the train, and provide a basis for the subsequent use of the renewable energy storage nodes and / or hydrogen-electric coupling nodes inside the energy storage system to perform auxiliary power supply regulation and control on the traction network. In addition, the power supply fluctuation characteristics are compared with the corrected global energy storage status map to determine the area where the traction network corresponding to the track line needs to be auxiliary powered, so as to adjust the power control state of the renewable energy storage nodes and / or hydrogen-electric coupling nodes of the track line to the traction network, and ensure that the renewable energy storage nodes and / or hydrogen-electric coupling nodes can compensate for the power supply gap of the traction network.

[0045] When there is no train passing through the track line within a time interval, the traction network corresponding to the track line does not need additional power supply compensation. At this time, the hydrogen-electric coupling node corresponding to the track line can be used to supply power to the traction network corresponding to other track lines, realizing power regulation between the hydrogen-electric coupling nodes of different track lines, and maximizing the flexible scheduling of power supply within the railway network. To this end, based on the train driving data of the track line, the busy and idle operation characteristics of the traction network are determined, so as to distinguish whether the traction network needs power supply from the energy storage system in the time domain, and provide a reliable time basis for subsequent power regulation. In addition, based on the busy and idle operation characteristics and the corrected global energy storage status map, the power regulation between the hydrogen-electric coupling nodes of the track line and other adjacent track lines is carried out to ensure that when the traction network of the track line does not need the auxiliary power supply of the energy storage system, the power of the energy storage system is dispatched and transmitted to the traction network of other track lines, so as to realize efficient and accurate scheduling of power within the railway network.

Brief Description of the Drawings

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0047] Figure 1 It is a flow chart of a railway comprehensive energy storage system planning and control method provided by the present invention.

[0048] Figure 2 It is a structural diagram of a railway comprehensive energy storage system planning and control system provided by the present invention. [Specific implementation method]

[0049] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention rather than all structures are shown in the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0050] The terms "including" and "having" and any variations thereof in the present invention are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0051] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0052] See also Figure 1 As shown, the present invention provides a railway integrated energy storage system planning and control method, the method comprising the following steps:

[0053] S100, obtaining weather data along the railway network, and based on the weather data, predicting the first electric energy characteristic data of each of the renewable energy storage nodes in the railway network, thereby constructing a global energy storage status map of the railway network; based on the second electric energy characteristic data of each of the hydrogen-electric coupling nodes in the railway network, correcting the global energy storage status map.

[0054] Furthermore, based on the geographical location along the railway network, meteorological satellite data along the railway network is obtained; wherein the meteorological satellite data includes satellite cloud map data and satellite radar echo data along the railway network; based on the meteorological satellite data, the wind energy and solar energy status information along the railway network is predicted; and based on the wind energy and solar energy status information, the first electric energy characteristic data of each renewable energy storage node in the railway network is predicted; wherein the first electric energy characteristic data includes the electricity generation data of each renewable energy storage node during the entire working period; and then the first electric energy characteristic data of each renewable energy storage node and its location information are correlated and mapped to construct a global energy storage status map of the railway network;

[0055] The power supply and recovery data of all hydrogen-electric coupling nodes in the railway network are obtained, and combined with the grid connection characteristics between all hydrogen-electric coupling nodes and all renewable energy storage nodes, the external power transmission status of all renewable energy storage nodes and the power recovery status of all hydrogen-electric coupling nodes in the global energy storage status map are corrected.

[0056] In order to free the railway network from its sole dependence on the power grid, renewable energy storage nodes are set up in a distributed manner at different locations of the railway network. Each renewable energy storage node includes equipment components such as wind turbines, photovoltaic panels and batteries, so that each renewable energy storage node can convert wind and solar energy in its area into electrical energy and store it locally. At the same time, each renewable energy storage node is also connected to the traction network corresponding to the railway network, so that the electricity generated by the renewable energy storage node can be directly transmitted to the traction network, realizing the diversification of the power supply of the traction network, ensuring that the renewable energy storage nodes can be used for auxiliary compensation power supply when the power supply of the power grid itself is unstable, and reducing the railway network's dependence on the power grid.

[0057] The power generation of renewable energy storage nodes depends on the amount of wind and solar energy resources in the area where they are located, resulting in the disadvantage of unstable power supply of renewable energy storage nodes. In order to accurately predict the power generation of renewable energy storage nodes and realize the effective layout of subsequent energy storage systems to transmit power to the traction network of the railway network, the weather conditions in the area where the renewable energy storage nodes are located are predicted, which can accurately predict the amount of power generation of renewable energy storage nodes in the future in advance, and provide an accurate basis for the subsequent power regulation between renewable energy storage nodes and traction networks. To this end, weather data along the railway network is obtained, the weather data is analyzed, and the first power characteristic data of all renewable energy storage nodes in the railway network are predicted to accurately characterize the renewable power generation state of each renewable energy storage node. Specifically, wind speed / risk data and sunshine / sun angle data along the railway network can be obtained and analyzed to predict the power generation data of all renewable energy storage nodes in the railway network during the entire working period. Then, the first electric energy characteristic data and location information of all renewable energy storage nodes are correlated and mapped to construct a global energy storage status map of the railway network, so that the global energy storage status map can fully and accurately characterize the energy storage distribution of all renewable energy storage nodes in the railway network at the airspace level, and provide an accurate basis for the subsequent power dispatch between the energy storage system and the traction network. According to the first electric energy characteristic data of all renewable energy storage nodes in the railway network, a global energy storage status map of the railway network is constructed, and the renewable electric energy generation status of all renewable energy storage nodes can be correlated and arranged at the railway network airspace level, and a global energy storage status map is generated to intuitively and comprehensively characterize the energy storage situation of unreachable locations in the railway network.

[0058] In addition, considering that the energy storage capacity of renewable energy storage nodes is limited, hydrogen-electric coupling nodes are also set up in a distributed manner at different locations of the railway network to realize supplementary power supply and storage for the railway network. In this way, renewable energy storage nodes and hydrogen-electric coupling nodes together constitute the energy storage system of the railway network, realizing flexible and reliable auxiliary power supply for the traction network of the railway network. Each hydrogen-electric coupling node is connected to the corresponding renewable energy storage node and directly connected to the traction network of the railway network, which can store the excess electric energy of the renewable energy storage node, and provide electric energy feedback when the subsequent renewable storage node cannot stably generate renewable electric energy, further improving the power supply stability of the energy storage system. To this end, based on the power supply and recovery data of all hydrogen-electric coupling nodes in the railway network, and combined with the grid connection characteristics between all hydrogen-electric coupling nodes and all renewable energy storage nodes, the external power transmission status of all renewable energy storage nodes and the power recovery status of all hydrogen-electric coupling nodes in the global energy storage status map are corrected, so that the corrected global energy storage status map can fully characterize the supplementary supply of electric energy by hydrogen-electric coupling nodes within the railway network.

[0059] S200, obtaining train power supply data of a track line within the railway network, analyzing the train power supply data, and obtaining the power supply fluctuation characteristics of the traction network corresponding to the track line; based on the power supply fluctuation characteristics and the corrected global energy storage status map, adjusting the power control status of the renewable energy storage nodes and / or hydrogen-electric coupling nodes of the track line for the traction network.

[0060] Further, based on a train operation table of a track line within the railway network, train power supply data of the track line during the entire working period is determined; wherein the train power supply data includes power supply amount change data of the track line to the train running on it during the entire working period;

[0061] Perform time domain analysis on the train power supply data to determine the peak and trough distribution characteristics of the track line's power supply to the train during the entire working period; based on the power supply peak and trough distribution characteristics, determine the power supply fluctuation characteristics of the traction network corresponding to the track line to the train during the entire working period; among which, the power supply fluctuation characteristics include the distribution characteristics of the power supply gap intervals of the traction network to the train during the entire working period.

[0062] Further, based on the power supply fluctuation characteristics and the corrected global energy storage state map, determine the renewable energy storage nodes and / or hydrogen-electric coupling nodes that can compensate for the power supply gap of the traction network during the power supply gap interval for the train;

[0063] Based on the energy storage situation of the renewable energy storage nodes that can compensate for the power supply gap during the power supply gap period, the renewable energy storage nodes are controlled to perform independent power regulation on the traction network, or the renewable energy storage nodes and the hydrogen-electricity coupling nodes are controlled to perform joint power regulation on the traction network.

[0064] The energy storage system of the railway network provides auxiliary power supply to the traction network corresponding to a track line when a train passes through it. In order to ensure the accurate power supply of the energy storage system to the traction network, the train power supply data of a track line inside the railway network is obtained. Specifically, based on the train operation table of a track line inside the railway network, the train power supply data of the track line during the entire working period is determined, and the change data of the power supply of the track line to the trains running on it during the entire working period is comprehensively characterized.

[0065] Then, the train power supply data is analyzed in the time domain to determine the peak and trough distribution characteristics of the power supply of the track line to the train during the entire working period, so as to quantitatively determine the peak and trough distribution of the traction network in the process of power supplying the train, and provide a basis for the subsequent use of renewable energy storage nodes and / or hydrogen-electric coupling nodes in the energy storage system to perform auxiliary power supply regulation on the traction network. Based on the peak and trough distribution characteristics of the power supply, the power supply fluctuation characteristics of the traction network corresponding to the track line to the train during the entire working period are determined; among them, the power supply fluctuation characteristics include the distribution characteristics of the power supply gap interval of the traction network to the train during the entire working period, so as to achieve a comprehensive time domain characterization of the power supply gap of the traction network corresponding to the track line to the train.

[0066] In addition, the power supply fluctuation characteristics are compared with the corrected global energy storage status map to determine the renewable energy storage nodes and / or hydrogen-electricity coupling nodes that can compensate for the power supply gap of the traction network during the power supply gap interval for the train; then, based on the energy storage situation of the renewable energy storage nodes that can compensate for the power supply gap during the power supply gap interval, the renewable energy storage nodes are controlled to perform independent power regulation on the traction network, or the renewable energy storage nodes and the hydrogen-electricity coupling nodes are controlled to perform joint power regulation on the traction network, to ensure that the renewable energy storage nodes and / or the hydrogen-electricity coupling nodes can compensate for the power supply gap of the traction network.

[0067] S300, based on the train travel data of the track line, determine the busy and idle characteristics of the traction network; based on the busy and idle characteristics and the corrected global energy storage status map, perform power regulation between the hydrogen-electric coupling nodes of the track line and other adjacent track lines.

[0068] Furthermore, based on the train travel time interval data of the track line, it is determined whether the power supply load of each unit time section under the traction network during the entire working period exceeds the preset load threshold; if it exceeds, the corresponding unit time section is determined as the operation busy time section of the traction network; if it does not exceed, the corresponding unit time section is determined as the operation idle time section of the traction network; and then based on the time domain distribution of all the operation busy time sections and all the operation idle time sections, the operation busy and idle characteristics of the traction network are generated;

[0069] Based on the busy and idle operation characteristics and the revised global energy storage status map, the external power supply of all hydrogen-electricity coupling nodes corresponding to the rail line during the busy operation time period and the remaining power during the idle operation time period are determined; based on the external power supply and the remaining power, two-way power regulation is carried out between the hydrogen-electricity coupling nodes of the rail line and other adjacent rail lines.

[0070] When no train passes through a track line within a certain time interval, the traction network corresponding to the track line does not need additional power supply compensation. At this time, the hydrogen-electricity coupling node corresponding to the track line can be used to supply power to the traction networks corresponding to other track lines, thereby realizing power regulation between the hydrogen-electricity coupling nodes of different track lines and maximizing the flexible scheduling of power supply within the railway network.

[0071] To this end, based on the train travel time interval data of the track line, it is determined whether the power supply load of all unit time sections under the traction network during the entire working period exceeds the preset load threshold; if exceeded, the corresponding unit time section is determined as the busy operation time section of the traction network; if not exceeded, the corresponding unit time section is determined as the idle operation time section of the traction network, and all busy operation time sections and all idle operation time sections are integrated, and the time domain distinction is made as to whether the traction network needs power supply from the energy storage system, so as to provide a reliable time basis for subsequent power regulation.

[0072] Based on the busy and idle operation characteristics and the revised global energy storage status map, the external power supply of all hydrogen-electric coupling nodes corresponding to the track line during the busy operation time period and the remaining power during the idle operation time period are determined; based on the external power supply and the remaining power, two-way power regulation is carried out between the hydrogen-electric coupling nodes of the track line and other adjacent track lines to ensure that when the traction network of the track line does not need the auxiliary power supply of the energy storage system, the power of the energy storage system is dispatched and transmitted to the traction network of other track lines, so as to realize efficient and accurate scheduling of power within the railway network.

[0073] See also Figure 2 As shown, the present invention provides a railway integrated energy storage system planning and control system, which includes the following modules:

[0074] An energy storage status map construction module is used to obtain weather data along the railway network, and based on the weather data, predict the first electric energy characteristic data of each of all renewable energy storage nodes in the railway network, so as to construct a global energy storage status map of the railway network;

[0075] An energy storage state map correction module, used to correct the global energy storage state map based on the second electric energy characteristic data of each of all hydrogen-electric coupling nodes in the railway network;

[0076] A traction network power supply fluctuation determination module is used to obtain train power supply data of a track line within the railway network, analyze the train power supply data, and obtain the power supply fluctuation characteristics of the traction network corresponding to the track line;

[0077] The traction network power control module is used to adjust the power control state of the traction network by the renewable energy storage nodes and / or hydrogen-electric coupling nodes of the track line based on the power supply fluctuation characteristics and the revised global energy storage state map;

[0078] A traction network operation busy and idle determination module is used to determine the operation busy and idle characteristics of the traction network based on the train travel data of the track line;

[0079] The inter-track power control module is used to control the power between the hydrogen-electric coupling nodes of the track line and other adjacent track lines based on the busy and idle operation characteristics and the revised global energy storage status map.

[0080] Furthermore, the energy storage status map construction module obtains weather data along the railway network, and based on the weather data, predicts the first electric energy characteristic data of all renewable energy storage nodes in the railway network, so as to construct a global energy storage status map of the railway network, specifically:

[0081] Based on the geographical location along the railway network, meteorological satellite data along the railway network is obtained; wherein the meteorological satellite data includes satellite cloud map data and satellite radar echo data along the railway network; based on the meteorological satellite data, the wind energy and solar energy status information along the railway network is predicted; and based on the wind energy and solar energy status information, the first electric energy characteristic data of each renewable energy storage node in the railway network is predicted; wherein the first electric energy characteristic data includes the electricity generation data of each renewable energy storage node during the entire working period; then the first electric energy characteristic data of each renewable energy storage node and its location information are correlated and mapped to construct a global energy storage status map of the railway network;

[0082] The energy storage state map correction module corrects the global energy storage state map based on the second electric energy characteristic data of all hydrogen-electric coupling nodes in the railway network, specifically:

[0083] The power supply and recovery data of all hydrogen-electric coupling nodes in the railway network are obtained, and combined with the grid connection characteristics between all hydrogen-electric coupling nodes and all renewable energy storage nodes, the external power transmission status of all renewable energy storage nodes and the power recovery status of all hydrogen-electric coupling nodes in the global energy storage status map are corrected.

[0084] Furthermore, the traction network power supply fluctuation determination module obtains the train power supply data of a track line inside the railway network, analyzes the train power supply data, and obtains the power supply fluctuation characteristics of the traction network corresponding to the track line, specifically:

[0085] Based on a train operation table of a track line within the railway network, determine the train power supply data of the track line during the entire working period; wherein the train power supply data includes the power supply amount change data of the track line to the train running on it during the entire working period;

[0086] Perform time domain analysis on the train power supply data to determine the peak and trough distribution characteristics of the track line's power supply to the train during the entire working period; based on the power supply peak and trough distribution characteristics, determine the power supply fluctuation characteristics of the traction network corresponding to the track line to the train during the entire working period; among which, the power supply fluctuation characteristics include the distribution characteristics of the power supply gap intervals of the traction network to the train during the entire working period.

[0087] Furthermore, the traction network power control module adjusts the power control state of the traction network by the renewable energy storage nodes and / or hydrogen-electric coupling nodes of the track line based on the power supply fluctuation characteristics and the corrected global energy storage state map, specifically:

[0088] Based on the power supply fluctuation characteristics and the corrected global energy storage state map, determine the renewable energy storage nodes and / or hydrogen-electric coupling nodes that can compensate for the power supply gap of the traction network during the power supply gap interval for the train;

[0089] Based on the energy storage situation of the renewable energy storage nodes that can compensate for the power supply gap during the power supply gap period, the renewable energy storage nodes are controlled to perform independent power regulation on the traction network, or the renewable energy storage nodes and the hydrogen-electricity coupling nodes are controlled to perform joint power regulation on the traction network.

[0090] Furthermore, the traction network operation busy / idle determination module determines the operation busy / idle characteristics of the traction network based on the train travel data of the track line, specifically:

[0091] Based on the train travel time interval data of the track line, determine whether the power supply load of each unit time section under the traction network during the entire working period exceeds the preset load threshold; if it exceeds, determine the corresponding unit time section as the operation busy time section of the traction network; if it does not exceed, determine the corresponding unit time section as the operation idle time section of the traction network; then based on the time domain distribution of all the operation busy time sections and all the operation idle time sections, generate the operation busy and idle characteristics of the traction network;

[0092] The inter-track power control module controls the power between the hydrogen-electric coupling nodes of the track line and other adjacent track lines based on the busy and idle operation characteristics and the revised global energy storage status map. Specifically:

[0093] Based on the busy and idle operation characteristics and the revised global energy storage status map, the external power supply of all hydrogen-electricity coupling nodes corresponding to the rail line during the busy operation time period and the remaining power during the idle operation time period are determined; based on the external power supply and the remaining power, two-way power regulation is carried out between the hydrogen-electricity coupling nodes of the rail line and other adjacent rail lines.

[0094] The operation and effect of the railway integrated energy storage system planning and control system of the present invention are corresponding to and consistent with the above-mentioned railway integrated energy storage system planning and control method, and the railway integrated energy storage system planning and control system will not be repeated here.

[0095] Through the description of the above implementation methods, technicians in this field can clearly understand that each implementation method can be implemented by adding a necessary general hardware platform, and of course can also be implemented by combining hardware and software. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a computer product, and the present invention can be in the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it, and other embodiments may also be used. Although the present invention has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A railway integrated energy storage system planning and control method, characterized in that: The method comprises the following steps: Acquire weather data along the railway network, and based on the weather data, predict first electric energy characteristic data of each of all renewable energy storage nodes in the railway network, thereby constructing a global energy storage status map of the railway network; and modify the global energy storage status map based on second electric energy characteristic data of each of all hydrogen-electric coupling nodes in the railway network; Acquire train power supply data of a track line within the railway network, analyze the train power supply data, and obtain power supply fluctuation characteristics of the traction network corresponding to the track line; based on the power supply fluctuation characteristics and the corrected global energy storage state map, adjust the power control state of the renewable energy storage node and / or hydrogen-electric coupling node of the track line to the traction network; Based on the train travel data of the track line, the busy and idle operation characteristics of the traction network are determined; based on the busy and idle operation characteristics and the revised global energy storage status map, the power regulation between the hydrogen-electric coupling nodes of the track line and other adjacent track lines is carried out.

2. The method according to claim 1, characterized in that Acquire weather data along the railway network, and based on the weather data, predict the first electric energy characteristic data of all renewable energy storage nodes in the railway network, so as to construct a global energy storage state map of the railway network; based on the second electric energy characteristic data of all hydrogen-electric coupling nodes in the railway network, modify the global energy storage state map, specifically: Based on the geographical location along the railway network, meteorological satellite data along the railway network is obtained; wherein the meteorological satellite data includes satellite cloud map data and satellite radar echo data along the railway network; based on the meteorological satellite data, the wind energy and solar energy status information along the railway network is predicted; and based on the wind energy and solar energy status information, the first electric energy characteristic data of each renewable energy storage node in the railway network is predicted; wherein the first electric energy characteristic data includes the electricity generation data of each renewable energy storage node during the entire working period; then the first electric energy characteristic data of each renewable energy storage node and its location information are correlated and mapped to construct a global energy storage status map of the railway network; The power supply and recovery data of all hydrogen-electric coupling nodes in the railway network are obtained, and combined with the grid connection characteristics between all hydrogen-electric coupling nodes and all renewable energy storage nodes, the external power transmission status of all renewable energy storage nodes and the power recovery status of all hydrogen-electric coupling nodes in the global energy storage status map are corrected.

3. The method according to claim 1, characterized in that: The train power supply data of a track line in the railway network is obtained, and the train power supply data is analyzed to obtain the power supply fluctuation characteristics of the traction network corresponding to the track line, specifically: Based on a train operation table of a track line within the railway network, determine the train power supply data of the track line during the entire operation period; wherein the train power supply data includes the power supply amount change data of the track line to the train running on the track line during the entire operation period; Performing time domain analysis on the train power supply data to determine the peak and trough distribution characteristics of power supply from the track line to the train during the entire working period; determining the power supply fluctuation characteristics of the traction network corresponding to the track line to the train during the entire working period based on the power supply peak and trough distribution characteristics; wherein the power supply fluctuation characteristics include the distribution characteristics of the power supply gap intervals of the traction network to the train during the entire working period.

4. The method according to claim 3, characterized in that Based on the power supply fluctuation characteristics and the corrected global energy storage state map, the power control state of the traction network by the renewable energy storage node and / or the hydrogen-electric coupling node of the track line is adjusted, specifically: Based on the power supply fluctuation characteristics and the corrected global energy storage state map, determine the renewable energy storage nodes and / or hydrogen-electricity coupling nodes of the traction network that can compensate for the power supply gap of the traction network during the power supply gap interval for the train; Based on the energy storage situation of the renewable energy storage node capable of compensating for the power supply gap during the power supply gap interval, the renewable energy storage node is controlled to perform independent power regulation on the traction network, or the renewable energy storage node and the hydrogen-electricity coupling node are controlled to perform joint power regulation on the traction network.

5. The method according to claim 1, characterized in that Determining the busy and idle characteristics of the traction network based on the train travel data of the track line; Based on the busy and idle operation characteristics and the revised global energy storage state map, the electric energy between the hydrogen-electric coupling nodes of the track line and other adjacent track lines is regulated, specifically: Based on the train travel time interval data of the track line, determining whether the power supply load of each unit time section of the traction network during the entire working period exceeds a preset load threshold; If it exceeds, the corresponding unit time section is determined as the operation busy time section of the traction network; If not, the corresponding unit time segment is determined as the idle time segment of the traction network; and based on the time domain distribution of all busy time segments and all idle time segments, the busy and idle characteristics of the traction network are generated; Based on the busy and idle operation characteristics and the revised global energy storage status map, determine the external power supply amount of all hydrogen-electric coupling nodes corresponding to the track line in the busy operation time section and the remaining power amount in the idle operation time section; Based on the external electric energy supply and the remaining electric energy, two-way electric energy regulation is performed between the hydrogen-electricity coupling nodes of the track line and other adjacent track lines.

6. A railway integrated energy storage system planning and control system, characterized in that: The system includes the following modules: An energy storage status map construction module is used to obtain weather data along the railway network, and based on the weather data, predict the first electric energy characteristic data of each of all renewable energy storage nodes in the railway network, so as to construct a global energy storage status map of the railway network; An energy storage state map correction module, used to correct the global energy storage state map based on the second electric energy characteristic data of each of all hydrogen-electric coupling nodes in the railway network; A traction network power supply fluctuation determination module is used to obtain train power supply data of a track line within the railway network, analyze the train power supply data, and obtain power supply fluctuation characteristics of the traction network corresponding to the track line; A traction network power control module, used to adjust the power control state of the traction network by the renewable energy storage nodes and / or hydrogen-electric coupling nodes of the track line based on the power supply fluctuation characteristics and the corrected global energy storage state map; A traction network operation busy and idle determination module, used to determine the operation busy and idle characteristics of the traction network based on the train travel data of the track line; The inter-track power control module is used to control the power between the hydrogen-electric coupling nodes of the track line and other adjacent track lines based on the busy and idle operation characteristics and the revised global energy storage status map.

7. The system according to claim 6, characterized in that The energy storage status map construction module obtains weather data along the railway network, and based on the weather data, predicts the first electric energy characteristic data of each of all renewable energy storage nodes in the railway network, so as to construct a global energy storage status map of the railway network, specifically: Based on the geographical location along the railway network, meteorological satellite data along the railway network is obtained; wherein the meteorological satellite data includes satellite cloud map data and satellite radar echo data along the railway network; based on the meteorological satellite data, the wind energy and solar energy status information along the railway network is predicted; and based on the wind energy and solar energy status information, the first electric energy characteristic data of each renewable energy storage node in the railway network is predicted; wherein the first electric energy characteristic data includes the electricity generation data of each renewable energy storage node during the entire working period; then the first electric energy characteristic data of each renewable energy storage node and its location information are correlated and mapped to construct a global energy storage status map of the railway network; The energy storage state map correction module corrects the global energy storage state map based on the second electric energy characteristic data of each of all hydrogen-electric coupling nodes in the railway network, specifically: The power supply and recovery data of all hydrogen-electric coupling nodes in the railway network are obtained, and combined with the grid connection characteristics between all hydrogen-electric coupling nodes and all renewable energy storage nodes, the external power transmission status of all renewable energy storage nodes and the power recovery status of all hydrogen-electric coupling nodes in the global energy storage status map are corrected.

8. The system according to claim 6, characterized in that The traction network power supply fluctuation determination module obtains train power supply data of a track line inside the railway network, analyzes the train power supply data, and obtains the power supply fluctuation characteristics of the traction network corresponding to the track line, specifically: Based on a train operation table of a track line within the railway network, determine the train power supply data of the track line during the entire operation period; wherein the train power supply data includes the power supply amount change data of the track line to the train running on the track line during the entire operation period; Performing time domain analysis on the train power supply data to determine the peak and trough distribution characteristics of power supply from the track line to the train during the entire working period; determining the power supply fluctuation characteristics of the traction network corresponding to the track line to the train during the entire working period based on the power supply peak and trough distribution characteristics; wherein the power supply fluctuation characteristics include the distribution characteristics of the power supply gap intervals of the traction network to the train during the entire working period.

9. The system according to claim 6, characterized in that The traction network power control module adjusts the power control state of the traction network by the renewable energy storage node and / or the hydrogen-electric coupling node of the track line based on the power supply fluctuation characteristics and the corrected global energy storage state map, specifically: Based on the power supply fluctuation characteristics and the corrected global energy storage state map, determine the renewable energy storage nodes and / or hydrogen-electricity coupling nodes of the traction network that can compensate for the power supply gap of the traction network during the power supply gap interval for the train; Based on the energy storage situation of the renewable energy storage node capable of compensating for the power supply gap during the power supply gap interval, the renewable energy storage node is controlled to perform independent power regulation on the traction network, or the renewable energy storage node and the hydrogen-electricity coupling node are controlled to perform joint power regulation on the traction network.

10. The system according to claim 6, characterized in that The traction network operation busy / idle determination module determines the operation busy / idle characteristics of the traction network based on the train travel data of the track line, specifically: Based on the train travel time interval data of the track line, determining whether the power supply load of each unit time section of the traction network during the entire working period exceeds a preset load threshold; If it exceeds, the corresponding unit time section is determined as the operation busy time section of the traction network; If not, the corresponding unit time segment is determined as the idle time segment of the traction network; and based on the time domain distribution of all busy time segments and all idle time segments, the busy and idle characteristics of the traction network are generated; The inter-track power control module performs power control between the hydrogen-electric coupling nodes of the track line and other adjacent track lines based on the busy and idle operation characteristics and the modified global energy storage state map, specifically: Based on the busy and idle operation characteristics and the revised global energy storage status map, determine the external power supply amount of all hydrogen-electric coupling nodes corresponding to the track line in the busy operation time section and the remaining power amount in the idle operation time section; Based on the external electric energy supply and the remaining electric energy, two-way electric energy regulation is performed between the hydrogen-electricity coupling nodes of the track line and other adjacent track lines.

Images