Collaborative energy scheduling method and device

Abstract

The embodiments of this specification provide a collaborative energy scheduling method and apparatus, wherein the collaborative energy scheduling method includes: obtaining first load information of a first energy router at a railway station, second load information of a second energy router at a traction depot, third load information of a third energy router at a railway line end, a first line resistance between the main power grid end and the railway station end, a second line resistance between the railway station end and the traction depot end, and a third line resistance between the traction depot end and the railway line end. Target scheduling data is calculated based on the first load information, the second load information, the third load information, the first line resistance, the second line resistance, and the third line resistance, as well as a preset collaborative scheduling calculation formula. Embodiments of the present invention can significantly reduce network losses and improve the comprehensive utilization efficiency of the grid-connected multiple energy sources in a railway network.

Description

Technical Field

[0001] The embodiments of this specification relate to the technical field of energy management systems, and in particular to a collaborative energy scheduling method and apparatus. Background Art

[0002] Driven by the "dual carbon" goals, building a comprehensive "source-grid-train-station-storage" energy supply system integrating photovoltaic power generation, ground-source heat pumps, air-cooled heat pumps, charging facilities, and energy storage technologies is crucial for the railway industry's low-carbon transition. This system aims to improve the traction efficiency of railway trains and the energy efficiency of non-traction loads at stations, and is one of the key strategies for the railway sector to achieve its "dual carbon" goals.

[0003] However, the current system faces many challenges: the train traction load not only has a large power demand but also fluctuates frequently; there are significant differences in time and space between the supply of new energy and the traction load; in addition, dispatchable resources such as photovoltaic power generation, charging facilities, heat pumps and air conditioning are relatively independent in planning and operation control, failing to fully realize the synergy of diversified distributed resources. Due to the difficulty in controlling power balance, the existing integrated functional system has low comprehensive utilization efficiency of multiple energy sources and large network losses. Summary of the Invention

[0004] In view of this, embodiments of this specification provide a collaborative energy scheduling method. One or more embodiments of this specification also involve a collaborative energy scheduling apparatus, a computing device, a computer-readable storage medium, and a computer program to address technical deficiencies in the prior art.

[0005] According to a first aspect of an embodiment of this specification, a collaborative energy scheduling method is provided. The method is used to adjust the power balance between a large power grid end, a railway station end, a traction depot end, and a railway line end in a railway network collaborative function system. The method includes:

[0006] Obtaining first load information of a first energy router at the railway station end, second load information of a second energy router at the traction depot end, third load information of a third energy router at the railway line end, a first line resistance between the large power grid end and the railway station end, a second line resistance between the railway station end and the traction depot end, and a third line resistance between the traction depot end and the railway line end;

[0007] The target scheduling data is calculated based on the first load information, the second load information, the third load information, the first line resistance, the second line resistance, and the third line resistance, as well as a preset collaborative scheduling calculation formula, wherein the target scheduling data includes the first target energy storage consumption power at the railway station end, the second target energy storage consumption power at the traction depot end, and the third target energy storage consumption power at the railway line end, as well as the first target transmission power transmitted from the railway station end to the large power grid end, the second target transmission power input from the traction depot end to the railway station end, and the third target transmission power input from the railway line end to the traction depot end.

[0008] In some embodiments, the first load information includes a first port voltage of a port connected to the large power grid in the first energy router, a current phase difference between the first port voltage and the current, a second port voltage of a port connected to the traction station in the first energy router, a first AC / DC load consumption power, a first non-traditional output power, and a first traction power grid consumption power at the railway station, a first initial energy storage consumption power at the railway station, and a first threshold interval corresponding to the energy storage port at the railway station.

[0009] The second load information includes the third port voltage of the port connected to the station end in the second energy router, the fourth port voltage of the port connected to the railway end in the second energy router, the second AC and DC load consumption power, the second non-traditional output power and the second traction grid consumption power at the traction station end, the second initial energy storage consumption power at the traction station end, and the second threshold interval corresponding to the energy storage port at the traction station end;

[0010] The third load information includes a fifth port voltage of a port connected to the traction station end in the third energy router, a third non-traditional output power and a third traction grid consumption power at the railway line end, a third initial energy storage consumption power at the railway line end, and a third threshold interval corresponding to the energy storage port at the railway line end;

[0011] Calculating target scheduling data based on the first load information, the second load information, the third load information, the first line resistance, the second line resistance, and the third line resistance, and a preset collaborative scheduling calculation formula, including:

[0012] The first target energy storage consumption power, the second target energy storage consumption power, the third target energy storage consumption power, the first initial energy storage consumption power, the first threshold interval, the third port voltage, the fourth port voltage, the second AC / DC load consumption power, the second non-traditional output power, the second traction grid consumption power, the second initial energy storage consumption power, the second threshold interval, the fifth port voltage, the third non-traditional output power, the third traction grid consumption power, the third initial energy storage consumption power and the third threshold interval, the first line resistance, the second line resistance and the third line resistance, and the preset collaborative scheduling calculation formula are used to calculate the first target energy storage consumption power, the second target energy storage consumption power, the third target energy storage consumption power, the first target transmission power, the second target transmission power and the third target transmission power.

[0013] In some embodiments, the collaborative scheduling calculation formula includes:

[0014]

[0015]

[0016]

[0017]

[0018] in, U 1 represents the first port voltage, U 2 represents the second port voltage, U 3 represents the third port voltage, U 4 represents the fourth port voltage, U 5 represents the fifth port voltage, represents the current phase difference, P PV1 represents the first non-conventional output power, P PV2 represents the second non-conventional output power, P PV3 represents the third non-conventional output power, P Tra1 represents the power consumption of the first traction grid, P Tra2 represents the power consumption of the second traction grid, P Tra3 represents the power consumption of the third traction grid, P load1 Indicates the power consumed by the first AC / DC load, P load2 Indicates the power consumed by the second AC / DC load, P bat1 Indicates the first target energy storage consumption power,P bat2 Indicates the second target energy storage consumption power, P bat3 represents the third target energy storage consumption power, P 1 represents the first target transmission power, P 2 represents the second target transmission power, P 3 represents the third target transmission power, R 1 represents the first line resistance, R 2 represents the second line resistance, R 3 represents the third line resistance;

[0019] When the first target energy storage consumes power P bat1 , Second target energy storage consumption power P bat2 and the third target energy storage consumption power P bat3 If they are respectively the same as the corresponding first initial energy storage consumption power, second initial energy storage consumption power and third initial energy storage consumption power, this calculation formula cannot be used and no scheduling is required.

[0020] In some embodiments, when the first / second / third initial energy storage consumption power are all within the corresponding first / second / third threshold ranges, the first initial energy storage consumption power, the second initial energy storage consumption power or the third initial energy storage consumption power is prioritized based on a preset priority order.

[0021] In some embodiments, when the number of the first / second / third initial energy storage consumption powers that are within the corresponding first / second / third threshold intervals is less than 3 and greater than 0, the first / second / third initial energy storage consumption powers that are not within the corresponding threshold intervals are determined as the corresponding first / second / third target energy storage consumption powers, and the first / second / third target energy storage consumption powers within the corresponding first / second / third threshold intervals are calculated in combination with the collaborative scheduling calculation formula, and the first / second / third target transmission powers are calculated.

[0022] In some embodiments, the step of determining the first / second / third initial energy storage consumption power that is not within the corresponding threshold interval as the corresponding first / second / third target energy storage consumption power includes:

[0023] The first / second / third initial energy storage consumption power that is not in the corresponding threshold interval is determined as the upper / lower boundary threshold of the corresponding first / second / third threshold interval close to the first / second / third initial energy storage consumption power, to obtain the determined first / second / third target energy storage consumption power.

[0024] In some embodiments, the above method further comprises:

[0025] When the first / second / third initial energy storage consumption power is not within the corresponding first / second / third threshold range, no scheduling is performed.

[0026] According to a second aspect of an embodiment of this specification, a collaborative energy scheduling device is provided. The device is used to adjust the power balance between the main power grid end, the railway station end, the traction depot end, and the railway line end in a railway network collaborative function system. The device includes:

[0027] an acquisition module, configured to acquire first load information of a first energy router at a railway station, second load information of a second energy router at a traction depot, third load information of a third energy router at a railway line end, a first line resistance between a large power grid end and a railway station end, a second line resistance between a railway station end and a traction depot end, and a third line resistance between a traction depot end and a railway line end;

[0028] A calculation module is used to calculate target scheduling data based on the first load information, the second load information, the third load information, the first line resistance, the second line resistance, and the third line resistance, as well as a preset collaborative scheduling calculation formula, wherein the target scheduling data includes the first target energy storage consumption power at the railway station end, the second target energy storage consumption power at the traction depot end, and the third target energy storage consumption power at the railway line end, as well as the first target transmission power transmitted from the railway station end to the large power grid end, the second target transmission power input from the traction depot end to the railway station end, and the third target transmission power input from the railway line end to the traction depot end.

[0029] In some embodiments, the first load information includes a first port voltage of a port connected to the large power grid in the first energy router, a current phase difference between the first port voltage and the current, a second port voltage of a port connected to the traction station in the first energy router, a first AC / DC load consumption power, a first non-traditional output power, and a first traction power grid consumption power at the railway station, a first initial energy storage consumption power at the railway station, and a first threshold interval corresponding to the energy storage port at the railway station.

[0030] The second load information includes the third port voltage of the port connected to the station end in the second energy router, the fourth port voltage of the port connected to the railway end in the second energy router, the second AC and DC load consumption power, the second non-traditional output power and the second traction grid consumption power at the traction station end, the second initial energy storage consumption power at the traction station end, and the second threshold interval corresponding to the energy storage port at the traction station end;

[0031] The third load information includes a fifth port voltage of a port connected to the traction station end in the third energy router, a third non-traditional output power and a third traction grid consumption power at the railway line end, a third initial energy storage consumption power at the railway line end, and a third threshold interval corresponding to the energy storage port at the railway line end;

[0032] Calculating target scheduling data based on the first load information, the second load information, the third load information, the first line resistance, the second line resistance, and the third line resistance, and a preset collaborative scheduling calculation formula, including:

[0033] The first target energy storage consumption power, the second target energy storage consumption power, the third target energy storage consumption power, the first initial energy storage consumption power, the first threshold interval, the third port voltage, the fourth port voltage, the second AC / DC load consumption power, the second non-traditional output power, the second traction grid consumption power, the second initial energy storage consumption power, the second threshold interval, the fifth port voltage, the third non-traditional output power, the third traction grid consumption power, the third initial energy storage consumption power and the third threshold interval, the first line resistance, the second line resistance and the third line resistance, and the preset collaborative scheduling calculation formula are used to calculate the first target energy storage consumption power, the second target energy storage consumption power, the third target energy storage consumption power, the first target transmission power, the second target transmission power and the third target transmission power.

[0034] In some embodiments, the collaborative scheduling calculation formula includes:

[0035]

[0036]

[0037]

[0038]

[0039] in, U 1 represents the first port voltage, U 2 represents the second port voltage, U 3 represents the third port voltage, U 4 represents the fourth port voltage, U 5 represents the fifth port voltage, represents the current phase difference, P PV1 represents the first non-conventional output power, P PV2 represents the second non-conventional output power, P PV3 represents the third non-conventional output power, PTra1 represents the power consumption of the first traction grid, P Tra2 represents the power consumption of the second traction grid, P Tra3 represents the power consumption of the third traction grid, P load1 Indicates the power consumed by the first AC / DC load, P load2 Indicates the power consumed by the second AC / DC load, P bat1 Indicates the first target energy storage consumption power, P bat2 Indicates the second target energy storage consumption power, P bat3 represents the third target energy storage consumption power, P 1 represents the first target transmission power, P 2 represents the second target transmission power, P 3 represents the third target transmission power, R 1 represents the first line resistance, R 2 represents the second line resistance, R 3 represents the third line resistance;

[0040] When the first target energy storage consumes power P bat1 , Second target energy storage consumption power P bat2 and the third target energy storage consumption power P bat3 If they are respectively the same as the corresponding first initial energy storage consumption power, second initial energy storage consumption power and third initial energy storage consumption power, this calculation formula cannot be used and no scheduling is required.

[0041] In some embodiments, when the first / second / third initial energy storage consumption power are all within the corresponding first / second / third threshold ranges, the first initial energy storage consumption power, the second initial energy storage consumption power or the third initial energy storage consumption power is prioritized based on a preset priority order.

[0042] In some embodiments, when the number of the first / second / third initial energy storage consumption powers that are within the corresponding first / second / third threshold intervals is less than 3 and greater than 0, the first / second / third initial energy storage consumption powers that are not within the corresponding threshold intervals are determined as the corresponding first / second / third target energy storage consumption powers, and the first / second / third target energy storage consumption powers within the corresponding first / second / third threshold intervals are calculated in combination with the collaborative scheduling calculation formula, and the first / second / third target transmission powers are calculated.

[0043] In some embodiments, the step of determining the first / second / third initial energy storage consumption power that is not within the corresponding threshold interval as the corresponding first / second / third target energy storage consumption power includes:

[0044] The first / second / third initial energy storage consumption power that is not in the corresponding threshold interval is determined as the upper / lower boundary threshold of the corresponding first / second / third threshold interval close to the first / second / third initial energy storage consumption power, to obtain the determined first / second / third target energy storage consumption power.

[0045] In some embodiments, the computing module is further configured to:

[0046] When the first / second / third initial energy storage consumption power is not within the corresponding first / second / third threshold range, no scheduling is performed.

[0047] According to a third aspect of an embodiment of this specification, a computing device is provided, including:

[0048] memory and processor;

[0049] The memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions. When the computer-executable instructions are executed by the processor, the steps of the above-mentioned collaborative energy scheduling method are implemented.

[0050] According to a fourth aspect of the embodiments of this specification, a computer-readable storage medium is provided, which stores computer-executable instructions, and when the instructions are executed by a processor, the steps of the above-mentioned collaborative energy scheduling method are implemented.

[0051] According to a fifth aspect of the embodiments of this specification, a computer program is provided, wherein when the computer program is executed in a computer, the computer is caused to execute the steps of the above-mentioned collaborative energy scheduling method.

[0052] At least one embodiment of the embodiments of this specification can greatly reduce network losses and improve the comprehensive utilization efficiency of multiple energy grid connections in the railway network by obtaining first load information, second load information, third load information, first line resistance, second line resistance and third line resistance, and combining them with a collaborative scheduling calculation formula to calculate target scheduling data. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 is a flowchart of some embodiments of a collaborative energy scheduling method provided by some embodiments of this specification;

[0054] Figure 2a This is a simple structural diagram of some embodiments of a collaborative energy scheduling method provided by some embodiments of this specification;

[0055] Figure 2b It is a simple topological diagram of some embodiments of a collaborative energy scheduling method provided by some embodiments of this specification;

[0056] Figure 3 This is a simplified structural diagram of a collaborative energy scheduling device provided in some embodiments of this specification;

[0057] Figure 4 This is a structural block diagram of a computing device provided in some embodiments of this specification. DETAILED DESCRIPTION

[0058] The following description sets forth many specific details to facilitate a thorough understanding of this specification. However, this specification can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the scope of this specification. Therefore, this specification is not limited to the specific implementations disclosed below.

[0059] The terms used in one or more embodiments of this specification are for the purpose of describing specific embodiments only and are not intended to limit one or more embodiments of this specification. The singular forms of "a" and "the" used in one or more embodiments of this specification and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used in one or more embodiments of this specification refers to and includes any or all possible combinations of one or more associated listed items. The modifications of "one" and "a plurality" mentioned in this disclosure are illustrative and not restrictive, and those skilled in the art should understand that unless the context clearly indicates otherwise, it should be understood as "one or more".

[0060] It should be understood that although the terms first, second, etc. may be used to describe various information in one or more embodiments of this specification, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of one or more embodiments of this specification, the first may also be referred to as the second, and similarly, the second may also be referred to as the first. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0061] First, the terms involved in one or more embodiments of this specification are explained.

[0062] Railway network collaborative function system: a "source-grid-vehicle-station-storage" comprehensive energy supply system that integrates various new energy sources such as photovoltaic power generation, ground-source heat pumps, air-cooled heat pumps, charging facilities, large power grid facilities, vehicle traction network systems, traction stations and energy storage systems.

[0063] Driven by the "dual carbon" goals, building a comprehensive "source-grid-train-station-storage" energy supply system integrating photovoltaic power generation, ground-source heat pumps, air-cooled heat pumps, charging facilities, and energy storage technologies is crucial for the railway industry's low-carbon transition. This system aims to improve the traction efficiency of railway trains and the energy efficiency of non-traction loads at stations, and is one of the key strategies for the railway sector to achieve its "dual carbon" goals.

[0064] However, the current system faces many challenges: the train traction load not only has a large power demand but also fluctuates frequently; there are significant differences in time and space between the supply of new energy and the traction load; in addition, dispatchable resources such as photovoltaic power generation, charging facilities, heat pumps and air conditioning are relatively independent in planning and operation control, failing to fully realize the synergistic effect of diversified distributed resources.

[0065] To address the aforementioned issues, one or more embodiments of this specification simultaneously relate to a collaborative energy scheduling apparatus, a computing device, a computer-readable storage medium, and a computer program to address the technical deficiencies in the prior art. These are further described below through various embodiments.

[0066] See also Figure 1 , Figure 1 A flowchart of a collaborative energy scheduling method provided according to some embodiments of this specification is shown, which specifically includes the following steps.

[0067] Step 101: Obtain first load information of the first energy router at the railway station end, second load information of the second energy router at the traction depot end, third load information of the third energy router at the railway line end, the first line resistance between the large power grid end and the railway station end, the second line resistance between the railway station end and the traction depot end, and the third line resistance between the traction depot end and the railway line end.

[0068] In some embodiments, as Figure 2a and 2bAs shown, the execution entity of the collaborative energy scheduling method can be a higher-level control unit (not shown in the figure) at the station end, the traction depot end, and the railway line end. The execution entity can connect to the target device via a wired connection or a wireless connection, and then obtain the first load information of the first energy router at the railway station end, the second load information of the second energy router at the traction depot end, the third load information of the third energy router at the railway line end, the first line resistance between the large power grid end and the railway station end, the second line resistance between the railway station end and the traction depot end, and the third line resistance between the traction depot end and the railway line end. It should be noted that the above-mentioned wireless connection method may include but is not limited to 3G / 4G / 5G / 6G connection, WiFi connection, Bluetooth connection, WiMAX connection, Zigbee connection, UWB (ultra wideband) connection, and other wireless connection methods currently known or to be developed in the future.

[0069] The railway network collaborative function system can have multiple units. For the sake of simplicity, the following units are used: Figure 2b Taking the simple topology shown as an example, the power grid, station, traction depot, and railway line terminals are connected in sequence, according to the direction of power flow. The power grid refers to the energy supplier that provides the primary energy supply (and may receive some power from the railway station for power regulation). The power grid primarily comes from mature technologies, such as traditional power generation methods such as thermal power and hydropower. The railway station refers to a unit that is directly connected to the power grid and exchanges power with the grid via alternating current (primarily receiving power from the power grid). The traction depot is connected to the railway station to receive power and transmit it to the railway line terminals. The railway line terminals may refer to the lines between stations (which contain circuits and generate power losses). Furthermore, in embodiments of the present invention, power regulation at the station, traction depot, and railway line terminals is primarily performed through the first, second, and third energy routers located at each terminal, which perform power balance adjustments.

[0070] Continue to participate Figure 2a and 2b Based on system design requirements, the energy routers at the station, traction depot, and railway line have different configurations. The first energy router (station-side) features a high-voltage port, traction port, photovoltaic port, energy storage port, AC load port, DC load port, and interconnection port; the second energy router (traction depot-side) features a traction port, photovoltaic port, energy storage port, AC load port, and interconnection port; and the third energy router (railway line) features a traction port, photovoltaic port, energy storage port, and interconnection port. The high-voltage port refers to the port that connects to the main grid. This port is used to transmit power between the main grid and the railway station.

[0071] The energy storage port is an important processing port in the embodiment of the present invention. When making power adjustments, the first consideration is whether the energy storage unit has energy storage margin. When the energy storage unit has margin, local adjustment is given priority (i.e., the station end, traction end, or railway end performs self-adjustment). The energy storage port is generally connected to the distributed energy storage unit through a non-isolated DC / DC converter, which can realize bidirectional control of voltage level conversion and power flow. In the island operation mode, the energy storage port is used to stabilize the DC bus voltage. Multiple energy storage units can be connected to increase the overall energy storage capacity to stabilize the DC bus voltage. In the grid-connected mode, the power is regulated in conjunction with the grid-connected port. It can operate in two modes: boost mode: forward power transmission at this time. buck mode: reverse power transmission at this time. Based on the different transmission directions of the power flow in these two modes, the energy storage battery can change the charging and discharging state according to the overall operating conditions.

[0072] AC / DC load ports are generally uncontrollable load ports. They are used to interconnect loads with high randomness and volatility in transmission power, such as AC and DC loads, on multi-port power routers. This article uses DC and AC loads as examples. The power flow on these ports is generally unidirectional and uncontrollable.

[0073] The photovoltaic port is merely an example; it can be replaced with other non-traditional energy sources, such as geothermal or wind power, without limitation. The output characteristics of the photovoltaic modules in the photovoltaic port are limited by environmental factors, particularly light intensity and temperature. Under varying light intensity and temperature conditions, the output characteristics of photovoltaic cells exhibit significant nonlinearity. The photovoltaic port converter uses a boost circuit connected to the DC bus. The DC load port also uses a boost circuit, and the single-phase AC load port uses a single-phase inverter connected to the load. To maximize the use of renewable energy generation, the power of these ports is often selected to operate in MPPT mode, with power flowing from the photovoltaic port to the DC bus and uncontrollable.

[0074] The interconnection port must be capable of converting electrical energy forms and voltage levels through a three-phase AC / DC converter, and must be able to actively adjust its own transmission power to stabilize the DC bus voltage, enabling bidirectional control of power flows. The interconnection port topology commonly uses a PWM rectifier, and this structure is chosen for the interconnection port in this paper. For safety and insulation reasons, a DAB converter can be used to electrically isolate the grid from the energy router. Its characteristics are that each component is interconnected via a high-voltage common DC bus and is relatively independently controlled. Because railway station-side power supply is a critical primary load, energy routers generally operate in grid-connected mode, serving as the primary power source and backup for multi-port power routers.

[0075] The traction grid serves as a power source within the traction power supply system, but it does not inherently generate electricity. It relies on high-voltage transmission lines to connect to local 220kV or 110kV regional substations. The voltage is then stepped down by traction transformers, and then transmitted via feeders to the overhead catenary above the rails. Electric locomotives (EMUs) draw power from the overhead catenary using their onboard pantographs, which in turn supply the onboard AC motors. The entire circuit is closed by the rails, the ground, and the return line, enabling the train to traction. Existing electrified railway traction power supply systems utilize industrial frequency, single-phase AC power, with a rated voltage of 25kV for the overhead catenary. The traction grid port topology utilizes single-phase PWM rectifiers, enabling bidirectional power flow. However, the traction grid primarily handles vehicle braking, starting, and stopping, making accurate predictions and timely overpower adjustments impossible. Therefore, in the embodiments of the present invention, this port is considered a non-adjustable window.

[0076] Correspondingly, the first / second / third load information may refer to various parameters involved in the first / second / third energy routers for calculating and balancing power. Since the ports of the first / second / third energy routers are different, the first / second / third load information is also different.

[0077] In some optional implementations, such as Figure 1 As shown, the first load information includes the first port voltage of the port of the first energy router connected to the main power grid, the current phase difference between the first port voltage and the current, the second port voltage of the port of the first energy router connected to the traction station, the first AC / DC load power consumption, the first non-traditional output power, and the first traction grid power consumption at the railway station, the first initial energy storage power consumption at the railway station, and the first threshold interval corresponding to the energy storage port at the railway station. During AC / DC conversion, a voltage / current phase difference is generated, and this difference is the aforementioned current phase difference.

[0078] The second load information includes the third port voltage of the port connected to the station end in the second energy router, the fourth port voltage of the port connected to the railway end in the second energy router, the second AC and DC load consumption power, the second non-traditional output power and the second traction grid consumption power at the traction station end, the second initial energy storage consumption power at the traction station end, and the second threshold interval corresponding to the energy storage port at the traction station end.

[0079] The third load information includes the fifth port voltage of the port connected to the traction station end in the third energy router, the third non-traditional output power and the third traction grid consumption power at the railway line end, the third initial energy storage consumption power at the railway line end, and the third threshold interval corresponding to the energy storage port at the railway line end.

[0080] The energy storage unit corresponding to each energy storage port has a minimum power requirement to maintain basic operation during operation. Therefore, the power passing through the energy storage port must not be less than this minimum power requirement, which is the lower threshold of the first, second, and third threshold intervals. Each energy storage unit also has an upper energy storage limit. When the energy storage limit is reached, the state of the energy storage port of the corresponding first, second, or third energy router becomes unadjustable, and its power is set to the upper threshold of the corresponding first, second, or third threshold intervals.

[0081] Step 102, calculate target scheduling data based on the first load information, the second load information, the third load information, the first line resistance, the second line resistance, and the third line resistance, as well as a preset collaborative scheduling calculation formula, wherein the target scheduling data includes a first target energy storage consumption power at the railway station end, a second target energy storage consumption power at the traction depot end, and a third target energy storage consumption power at the railway line end, as well as a first target transmission power transmitted from the railway station end to the large power grid end, a second target transmission power input from the traction depot end to the railway station end, and a third target transmission power input from the railway line end to the traction depot end.

[0082] In some optional implementations, the aforementioned execution entity can calculate the target scheduling data through the following steps: based on the first port voltage, the current phase difference, the second port voltage, the first AC / DC load consumption power, the first non-traditional output power, the first traction grid consumption power, the first initial energy storage consumption power, the first threshold interval, the third port voltage, the fourth port voltage, the second AC / DC load consumption power, the second non-traditional output power, the second traction grid consumption power, the second initial energy storage consumption power, the second threshold interval, the fifth port voltage, the third non-traditional output power, the third traction grid consumption power, the third initial energy storage consumption power and the third threshold interval, the first line resistance, the second line resistance and the third line resistance, and the preset collaborative scheduling calculation formula, calculate the first target energy storage consumption power, the second target energy storage consumption power and the third target energy storage consumption power, as well as the first target transmission power transmitted from the railway station end to the large power grid end, the second target transmission power input from the traction depot end to the railway station end and the third target transmission power input from the railway line end to the traction depot end.

[0083] The first / second / third target energy storage consumption power may refer to the adjusted power consumption corresponding to the energy storage port in the first / second / third energy router. It should be noted that before calculation, it is necessary to first determine whether the current first / second / third initial energy storage consumption power is within the corresponding first / second / third threshold interval. If it is outside the threshold interval, the first / second / third initial energy storage consumption power is the first / second / third target energy storage consumption power. If it is within the threshold interval, the first / second / third target energy storage consumption power needs to be calculated. The first / second / third target transmission power needs to be calculated.

[0084] In some optional implementations, when the first, second, or third initial energy storage power consumptions are all within the corresponding first, second, or third threshold intervals, the first, second, or third initial energy storage power consumptions are prioritized based on a preset priority order. The preset priority order can be set to different levels according to actual needs. As a specific example, the priority order is, in order of priority, the first, second, and third initial energy storage power consumptions. That is, when all three are within the corresponding threshold intervals and a power shortfall (increase or decrease) occurs, the first initial energy storage power consumption is prioritized until it reaches the upper or lower threshold of the corresponding first threshold interval. Next, the second initial energy storage power consumption is adjusted until it reaches the upper or lower threshold of the corresponding second threshold interval. Finally, the third initial energy storage power consumption is adjusted. This adjustment method allows for different priorities to be set for different energy routers to meet different application requirements, thereby increasing the practicality of the embodiments of the present invention.

[0085] In some optional implementations, when the number of the first / second / third initial energy storage consumption powers that are within the corresponding first / second / third threshold intervals is less than 3 and greater than 0, the first / second / third initial energy storage consumption powers that are not within the corresponding threshold intervals are determined as the corresponding first / second / third target energy storage consumption powers, and the first / second / third target energy storage consumption powers within the corresponding first / second / third threshold intervals are calculated in combination with the collaborative scheduling calculation formula, and the first / second / third target transmission powers are calculated.

[0086] In some optional implementations, the step of determining the first / second / third initial energy storage consumption power that is not in the corresponding threshold interval as the corresponding first / second / third target energy storage consumption power includes: determining the first / second / third initial energy storage consumption power that is not in the corresponding threshold interval as the upper / lower boundary threshold of the corresponding first / second / third threshold interval that is close to the first / second / third initial energy storage consumption power, and obtaining the determined first / second / third target energy storage consumption power.

[0087] In some optional implementations, when the first, second, or third initial energy storage power consumption values ​​are all outside the corresponding first, second, or third threshold values, scheduling is not performed. Obviously, when the first, second, or third initial energy storage power consumption values ​​are all outside the corresponding first, second, or third threshold values, scheduling is not possible. In this case, the railway network exhibits radial network characteristics, and line transmission power cannot be adjusted.

[0088] At least one embodiment of the embodiments of this specification can greatly reduce network losses and improve the comprehensive utilization efficiency of multiple energy grid connections in the railway network by obtaining first load information, second load information, third load information, first line resistance, second line resistance and third line resistance, and combining them with a collaborative scheduling calculation formula to calculate target scheduling data.

[0089] In some optional implementations, the collaborative scheduling calculation formula includes:

[0090] (1)

[0091] (2)

[0092] (3)

[0093] (4)

[0094] in, U 1 represents the first port voltage, U 2 represents the second port voltage, U 3 represents the third port voltage, U 4 represents the fourth port voltage, U 5 represents the fifth port voltage, represents the current phase difference, P PV1 represents the first non-conventional output power, P PV2 represents the second non-conventional output power, P PV3 represents the third non-conventional output power, P Tra1 represents the power consumption of the first traction grid, P Tra2 represents the power consumption of the second traction grid, P Tra3 represents the power consumption of the third traction grid, P load1 Indicates the power consumed by the first AC / DC load, P load2 Indicates the power consumed by the second AC / DC load, P bat1 Indicates the first target energy storage consumption power, P bat2 Indicates the second target energy storage consumption power, P bat3 represents the third target energy storage consumption power, P 1 represents the first target transmission power, P 2 represents the second target transmission power, P3 represents the third target transmission power, R1 represents the first line resistance, R2 represents the second line resistance, and R3 represents the third line resistance;

[0095] When the first target energy storage consumes power P bat1 , Second target energy storage consumption power P bat2 and the third target energy storage consumption power P bat3 If they are respectively the same as the corresponding first initial energy storage consumption power, second initial energy storage consumption power and third initial energy storage consumption power, this calculation formula cannot be used and no scheduling is required.

[0096] The derivation steps of sub-calculation formula (1) are as follows:

[0097] The first step is to construct the network loss calculation formula for each line, as shown below:

[0098]

[0099] in, Indicates the network loss power of the first line between the large power grid and the railway station, Indicates the network loss power of the second line between the railway station end and the traction depot end, Indicates the network loss power of the third line between the traction depot end and the railway line end.

[0100] The second step is to 、 and Ask about P 1. P 2 and P The partial derivative of 3 gives the following formula:

[0101]

[0102] The third step is to make the three equal, and we can get the sub-calculation formula (4):

[0103]

[0104] In addition, it should be pointed out that among the sub-calculations (1) to (4), sub-calculations (1) can be equivalent to two calculations. Therefore, it can be seen that the collaborative scheduling calculation includes 6 variables P 1. P 2. P 3. P bat1 、 P bat2 and P bat3, and five calculation formulas (the first sub-calculation formula is equivalent to two calculation formulas), namely the first target transmission power, the second target transmission power, the third target transmission power, the first target energy storage consumption power, the second target energy storage consumption power, and the third target energy storage consumption power. The first target energy storage consumption power, the second target energy storage consumption power, and the third target energy storage consumption power can be determined from the corresponding first initial energy storage consumption power, second initial energy storage consumption power, and third initial energy storage consumption power according to the aforementioned determination method.

[0105] The above embodiment is further described below through a specific embodiment:

[0106] (1) When the energy storage regulation capacity of the three nodes (railway station end, traction depot end and railway line end) reaches the upper limit:

[0107] like Figure 2b As shown, for external power balancing of energy routers, if the energy storage regulation capacity at all three ends reaches its upper limit, the network exhibits radial network characteristics, and line transmission power cannot be adjusted. At railway station-end energy routers, the grid participates in power balancing, and the power of interconnected lines is determined by the power deficit or surplus of the next-level energy router. In this case, the aforementioned coordinated scheduling formula can be omitted (as it does not require complex calculations) or used in conjunction with the formula (with the same results).

[0108] If the energy storage regulation capacity of one or two nodes reaches the upper limit, the line power transmission needs to analyze the energy routers of different nodes separately.

[0109] (2) When the energy storage regulation of two nodes reaches the upper limit:

[0110] When the energy storage regulation limit of the energy routers at the traction depot and along the railway reaches its upper limit, the network exhibits radial network characteristics, and the line transmission power cannot be adjusted. The energy routers at the railway station participate in power balancing, and the power of the interconnected lines is determined by the power deficit or surplus of the energy routers at the next level. The output power of the interconnected ports at the railway station can be calculated using the aforementioned coordinated scheduling formula.

[0111] When the energy storage and regulation capacity of the energy routers at the railway station end and the railway line end reaches the upper limit, the power output by the energy router at the railway line end to the upper-level energy router is determined, and the upper-level port (interconnection port) becomes an uncontrollable port; the lower-level port of the energy router at the traction depot end becomes an uncontrollable bidirectional port, and the power balance of the energy router at this level is mainly regulated by the energy storage at this level, and the power of the upper-level interconnection port is obtained by the aforementioned collaborative scheduling calculation formula; while the power of the energy router at the railway station end is regulated by two controllable bidirectional power ports, the power grid and the lower-level interconnection port, and the power is all obtained by the aforementioned collaborative scheduling calculation formula.

[0112] When the energy storage regulation of the energy routers at the railway station end and the traction depot end reaches the limit, the energy routers at the end nodes along the railway line use energy storage to balance the power, and the power of the upper-level port is calculated by the aforementioned collaborative scheduling formula; the energy router at the traction depot end relies on the upper and lower interconnected ports to maintain power balance, and the size is calculated by the aforementioned collaborative scheduling formula; the energy router at the railway station end relies on the power grid and the lower-level port to maintain, and the power size is also calculated by the aforementioned collaborative scheduling formula.

[0113] (3) When the energy storage regulation of a node reaches the upper limit:

[0114] For node energy routers at the end of radiating networks, such as those along railway lines, there are only two controllable bidirectional power ports: the energy storage port and the upper interconnection port. Therefore, when the energy storage capacity reaches its limit, the interconnection port is directly used to assist in power balancing. At this time, the power of the terminal node flows to the intermediate traction depot end node. The input power of the lower-level interconnection port in the traction depot end node energy router is determined by the remaining or insufficient power at the terminal. The lower-level interconnection port changes from a controllable bidirectional power port to an uncontrollable one, and the controllable bidirectional power ports at the traction depot end are reduced to two ports: the upper interconnection port and the energy storage port. This is equivalent to becoming the end node of the original network. The output power of the upper and lower interconnection ports at the railway station end and the traction depot end can be calculated using the aforementioned collaborative scheduling calculation formula.

[0115] For energy routers located at the intermediate nodes of the radiation network, such as the traction station end, there are three controllable bidirectional power ports: energy storage and upper and lower level interconnection ports. Therefore, when the energy storage reaches the limit, the upper and lower level interconnection ports can simultaneously participate in auxiliary power balancing. At this time, the output power of the upper and lower level interconnection ports is obtained by the aforementioned collaborative scheduling calculation formula.

[0116] For nodes such as railway stations, which are located at the intersection of the power grid and the DC network, there are three controllable bidirectional power ports: energy storage, grid connection, and lower-level interconnection. Therefore, when the energy storage reaches its limit, the grid connection port and the lower-level interconnection port cooperate to participate in the power balance of the energy router at this level. At this time, the grid connection power and the interconnection port output power are calculated according to the aforementioned collaborative scheduling formula.

[0117] (4) When the energy storage regulation of the three nodes does not reach the upper limit:

[0118] At this time, the energy storage of the three nodes has adjustment margin, which can make the energy balance inside the energy router at this level without the help of the aforementioned collaborative scheduling calculation formula. At this time, the network loss is 0.

[0119] The above formula is derived based on the network loss slight increase rate (an intermediate variable, which does not need to be calculated during calculation and is only used here to illustrate its derivation principle) and the power balance of each line. According to this calculation formula, the target scheduling data can be accurately calculated, thereby very easily balancing the power of the grid-connected power grid.

[0120] Corresponding to the above method embodiment, this specification also provides an embodiment of a collaborative energy scheduling device, Figure 3 FIG1 shows a schematic diagram of the structure of a collaborative energy scheduling device provided in some embodiments of this specification. Figure 3 As shown, the device includes:

[0121] The acquisition module 301 is used to obtain the first load information of the first energy router at the railway station end, the second load information of the second energy router at the traction depot end, the third load information of the third energy router at the railway line end, the first line resistance between the large power grid end and the railway station end, the second line resistance between the railway station end and the traction depot end, and the third line resistance between the traction depot end and the railway line end.

[0122] The calculation module 302 is used to calculate the target scheduling data based on the first load information, the second load information, the third load information, the first line resistance, the second line resistance, and the third line resistance, as well as a preset collaborative scheduling calculation formula, wherein the target scheduling data includes the first target energy storage consumption power at the railway station end, the second target energy storage consumption power at the traction depot end, and the third target energy storage consumption power at the railway line end, as well as the first target transmission power transmitted from the railway station end to the large power grid end, the second target transmission power input from the traction depot end to the railway station end, and the third target transmission power input from the railway line end to the traction depot end.

[0123] In some embodiments, the first load information includes a first port voltage of a port connected to the large power grid in the first energy router, a current phase difference between the first port voltage and the current, a second port voltage of a port connected to the traction station in the first energy router, a first AC / DC load consumption power, a first non-traditional output power, and a first traction grid consumption power at the railway station, a first initial energy storage consumption power at the railway station, and a first threshold interval corresponding to the energy storage port at the railway station; the second load information includes a third port voltage of a port connected to the station in the second energy router, a fourth port voltage of a port connected to the railway line, a second AC / DC load consumption power, a second non-traditional output power, and a second traction grid consumption power at the traction station, a second initial energy storage consumption power at the traction station, and a second threshold interval corresponding to the energy storage port at the traction station; the third load information includes a fifth port voltage of a port connected to the traction station in the third energy router, a third non-traditional output power and a third traction grid consumption power at the railway line, and a third initial energy storage consumption power at the railway line. and the third threshold interval corresponding to the energy storage port at the end of the railway line; according to the first load information, the second load information, the third load information, the first line resistance, the second line resistance, and the third line resistance, and the preset collaborative scheduling calculation formula, calculate the target scheduling data, including: according to the first port voltage, the current phase difference, the second port voltage, the first AC and DC load consumption power, the first non-traditional output power, the first traction grid consumption power, the first initial energy storage consumption power, the first threshold interval, the third port voltage, the fourth port voltage, the second AC and DC load consumption power, the second non-traditional output power, the second traction grid consumption power, the second initial energy storage consumption power, the second threshold interval, the fifth port voltage, the third non-traditional output power, the third traction grid consumption power, the third initial energy storage consumption power and the third threshold interval, the first line resistance, the second line resistance and the third line resistance, and the preset collaborative scheduling calculation formula, calculate the first target energy storage consumption power, the second target energy storage consumption power, the third target energy storage consumption power, the first target transmission power, the second target transmission power and the third target transmission power.

[0124] In some embodiments, the collaborative scheduling calculation formula includes:

[0125]

[0126]

[0127]

[0128]

[0129] in, U 1 represents the first port voltage,U 2 represents the second port voltage, U 3 represents the third port voltage, U 4 represents the fourth port voltage, U 5 represents the fifth port voltage, represents the current phase difference, P PV1 represents the first non-conventional output power, P PV2 represents the second non-conventional output power, P PV3 represents the third non-conventional output power, P Tra1 represents the power consumption of the first traction grid, P Tra2 represents the power consumption of the second traction grid, P Tra3 represents the power consumption of the third traction grid, P load1 Indicates the power consumed by the first AC / DC load, P load2 Indicates the power consumed by the second AC / DC load, P bat1 Indicates the first target energy storage consumption power, P bat2 Indicates the second target energy storage consumption power, P bat3 represents the third target energy storage consumption power, P 1 represents the first target transmission power, P 2 represents the second target transmission power, P 3 represents the third target transmission power, R 1 represents the first line resistance, R 2 represents the second line resistance, R 3 represents the third line resistance;

[0130] When the first target energy storage consumes power P bat1 , Second target energy storage consumption power P bat2 and the third target energy storage consumption power P bat3 If they are respectively the same as the corresponding first initial energy storage consumption power, second initial energy storage consumption power and third initial energy storage consumption power, this calculation formula cannot be used and no scheduling is required.

[0131] In some embodiments, when the first / second / third initial energy storage consumption power are all within the corresponding first / second / third threshold ranges, the first initial energy storage consumption power, the second initial energy storage consumption power or the third initial energy storage consumption power is prioritized based on a preset priority order.

[0132] In some embodiments, when the number of the first / second / third initial energy storage consumption powers that are within the corresponding first / second / third threshold intervals is less than 3 and greater than 0, the first / second / third initial energy storage consumption powers that are not within the corresponding threshold intervals are determined as the corresponding first / second / third target energy storage consumption powers, and the first / second / third target energy storage consumption powers within the corresponding first / second / third threshold intervals are calculated in combination with the collaborative scheduling calculation formula, and the first / second / third target transmission powers are calculated.

[0133] In some embodiments, the step of determining the first / second / third initial energy storage consumption power that is not within the corresponding threshold interval as the corresponding first / second / third target energy storage consumption power includes:

[0134] The first / second / third initial energy storage consumption power that is not in the corresponding threshold interval is determined as the upper / lower boundary threshold of the corresponding first / second / third threshold interval close to the first / second / third initial energy storage consumption power, to obtain the determined first / second / third target energy storage consumption power.

[0135] The above is a schematic diagram of a collaborative energy scheduling device according to this embodiment. It should be noted that the technical solution of this collaborative energy scheduling device and the technical solution of the collaborative energy scheduling method described above are based on the same concept. For details not described in detail in the technical solution of the collaborative energy scheduling device, please refer to the description of the technical solution of the collaborative energy scheduling method described above.

[0136] Figure 4 4 shows a block diagram of a computing device 400 according to some embodiments of the present disclosure. Components of the computing device 400 include, but are not limited to, a memory 410 and a processor 420. The processor 420 is connected to the memory 410 via a bus 430, and a database 450 is used to store data.

[0137] Computing device 400 also includes an access device 440 that enables computing device 400 to communicate via one or more networks 460. Examples of such networks include a public switched telephone network (PSTN), a local area network (LAN), a wide area network (WAN), a personal area network (PAN), or a combination of communication networks such as the Internet. Access device 440 may include one or more of any type of network interface (e.g., a network interface controller (NIC)) whether wired or wireless, such as an IEEE 802.11 wireless local area network (WLAN) wireless interface, a Worldwide Interoperability for Microwave Access (Wi-MAX) interface, an Ethernet interface, a universal serial bus (USB) interface, a cellular network interface, a Bluetooth interface, or a near field communication (NFC) interface.

[0138] In one embodiment of the present specification, the above components of the computing device 400 and Figure 4 Other components not shown in the figure may also be connected to each other, for example, via a bus. Figure 4 The computing device structure block diagram shown is for illustrative purposes only and is not intended to limit the scope of this specification. Those skilled in the art may add or replace other components as needed.

[0139] Computing device 400 can be any type of stationary or mobile computing device, including a mobile computer or mobile computing device (e.g., a tablet computer, personal digital assistant, laptop computer, notebook computer, netbook computer, etc.), a mobile phone (e.g., a smartphone), a wearable computing device (e.g., a smartwatch, smart glasses, etc.), or other types of mobile devices, or a stationary computing device such as a desktop computer or personal computer (PC). Computing device 400 can also be a mobile or stationary server.

[0140] The processor 420 is configured to execute the following computer-executable instructions, which, when executed by the processor, implement the steps of the collaborative energy scheduling method described above. The above is a schematic diagram of a computing device according to this embodiment. It should be noted that the technical solution of this computing device and the technical solution of the collaborative energy scheduling method described above are based on the same concept. For details not described in detail in the technical solution of the computing device, please refer to the description of the technical solution of the collaborative energy scheduling method described above.

[0141] An embodiment of the present specification further provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the steps of the above-mentioned collaborative energy scheduling method.

[0142] The above is a schematic diagram of a computer-readable storage medium according to this embodiment. It should be noted that the technical solution of this storage medium is based on the same concept as the technical solution of the aforementioned collaborative energy scheduling method. For details not described in detail in the technical solution of the storage medium, please refer to the description of the technical solution of the aforementioned collaborative energy scheduling method.

[0143] An embodiment of the present specification further provides a computer program, wherein when the computer program is executed in a computer, the computer is caused to execute the steps of the above-mentioned collaborative energy scheduling method.

[0144] The above is an illustrative solution of a computer program of this embodiment. It should be noted that the technical solution of this computer program and the technical solution of the above-mentioned collaborative energy scheduling method are based on the same concept. For details not described in detail in the technical solution of the computer program, please refer to the description of the technical solution of the above-mentioned collaborative energy scheduling method.

[0145] The foregoing description of this specification describes specific embodiments. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that described in the embodiments and still achieve the desired results. Furthermore, the processes depicted in the accompanying drawings do not necessarily require the specific order shown or the sequential order to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0146] Computer instructions include computer program code, which may be in source code, object code, executable files, or some intermediate form. Computer-readable media may include any entity or device capable of carrying computer program code, recording media, USB flash drives, removable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signals, telecommunications signals, and software distribution media. It should be noted that the content of computer-readable media may be expanded or reduced based on the requirements of legislation and patent practice within a jurisdiction. For example, in some jurisdictions, based on legislation and patent practice, computer-readable media does not include electric carrier signals or telecommunications signals.

[0147] It should be noted that for the aforementioned method embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the embodiments of this specification are not limited by the order of the actions described, because according to the embodiments of this specification, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the embodiments of this specification.

[0148] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0149] The preferred embodiments disclosed above are intended only to help illustrate this specification. The optional embodiments do not exhaustively describe all details, nor do they limit the invention to specific embodiments. Obviously, many modifications and variations are possible based on the content of the embodiments described herein. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the embodiments, thereby enabling those skilled in the art to better understand and utilize this specification. This specification is limited only by the claims and their full scope and equivalents.

Claims

1. A collaborative energy scheduling method, characterized in that: The method is used to adjust the power balance between the large power grid end, the railway station end, the traction depot end and the railway line end in the railway network cooperative function system, and the method includes: Obtaining first load information of a first energy router at the railway station end, second load information of a second energy router at the traction depot end, third load information of a third energy router at the railway line end, a first line resistance between the large power grid end and the railway station end, a second line resistance between the railway station end and the traction depot end, and a third line resistance between the traction depot end and the railway line end; The first load information includes a first port voltage of a port connected to the large power grid in the first energy router, a current phase difference between the first port voltage and the current, a second port voltage of a port connected to the traction station in the first energy router, a first AC / DC load power consumption, a first non-traditional output power, and a first traction power grid power consumption at the railway station, a first initial energy storage power consumption at the railway station, and a first threshold interval corresponding to the energy storage port at the railway station; The second load information includes a third port voltage of a port connected to the station end in the second energy router, a fourth port voltage of a port connected to the railway end in the second energy router, a second AC / DC load consumption power, a second non-traditional output power, and a second traction grid consumption power at the traction station end, a second initial energy storage consumption power at the traction station end, and a second threshold interval corresponding to the energy storage port at the traction station end; The third load information includes a fifth port voltage of a port connected to the traction station end in the third energy router, a third non-traditional output power and a third traction grid consumption power at the railway line end, a third initial energy storage consumption power at the railway line end, and a third threshold interval corresponding to the energy storage port at the railway line end; Target scheduling data is calculated based on the first load information, the second load information, the third load information, the first line resistance, the second line resistance, and the third line resistance, and a preset collaborative scheduling calculation formula, wherein the target scheduling data includes a first target energy storage consumption power at the railway station end, a second target energy storage consumption power at the traction depot end, and a third target energy storage consumption power at the railway line end, as well as a first target transmission power transmitted from the railway station end to the large power grid end, a second target transmission power input from the traction depot end to the railway station end, and a third target transmission power input from the railway line end to the traction depot end. The preset collaborative scheduling calculation formula for calculating the target scheduling data includes: in, U 1 represents the first port voltage, U 2 represents the second port voltage, U 3 represents the third port voltage, U 4 represents the fourth port voltage, U 5 represents the fifth port voltage, represents the current phase difference, P PV1 represents the first non-conventional output power, P PV2 represents the second non-conventional output power, P PV3 represents the third non-conventional output power, P Tra1 represents the power consumption of the first traction grid, P Tra2 represents the power consumption of the second traction grid, P Tra3 represents the power consumption of the third traction grid, P load1 represents the power consumed by the first AC / DC load, P load2 represents the power consumed by the second AC / DC load, P bat1 represents the first target energy storage consumption power, P bat2 represents the second target energy storage consumption power, P bat3 represents the third target energy storage consumption power, P 1 represents the first target transmission power, P 2 represents the second target transmission power, P 3 represents the third target transmission power, R 1 represents the first line resistance, R 2 represents the second line resistance, R 3 represents the third line resistance; When the first target energy storage consumes power P bat1 , Second target energy storage consumption power P bat2 and the third target energy storage consumption power P bat3 If they are respectively the same as the corresponding first initial energy storage consumption power, second initial energy storage consumption power and third initial energy storage consumption power, this calculation formula cannot be used and no scheduling is required.

2. The method according to claim 1, characterized in that When the first / second / third initial energy storage consumption power is within the corresponding first / second / third threshold range, the first initial energy storage consumption power, the second initial energy storage consumption power or the third initial energy storage consumption power is preferentially scheduled based on a preset priority order.

3. The method according to claim 1, characterized in that When the number of the first / second / third initial energy storage consumption powers that are within the corresponding first / second / third threshold intervals is less than 3 and greater than 0, the first / second / third initial energy storage consumption powers that are not within the corresponding threshold intervals are determined as the corresponding first / second / third target energy storage consumption powers, and the first / second / third target energy storage consumption powers within the corresponding first / second / third threshold intervals are calculated in combination with the collaborative scheduling calculation formula, as well as the first / second / third target transmission powers.

4. The method according to claim 3, characterized in that The step of determining the first / second / third initial energy storage consumption power that is not within the corresponding threshold interval as the corresponding first / second / third target energy storage consumption power includes: The first / second / third initial energy storage consumption power that is not in the corresponding threshold interval is determined as the upper / lower boundary threshold of the corresponding first / second / third threshold interval close to the first / second / third initial energy storage consumption power to obtain the determined first / second / third target energy storage consumption power.

5. The method according to claim 1, wherein Also includes: When the first / second / third initial energy storage consumption power is not within the corresponding first / second / third threshold range, no scheduling is performed.

6. A collaborative energy scheduling device, characterized in that: The device is used to adjust the power balance between the large power grid end, the railway station end, the traction depot end and the railway line end in the railway network cooperative function system, and the device includes: An acquisition module is used to acquire first load information of a first energy router at a railway station end, second load information of a second energy router at a traction depot end, third load information of a third energy router at a railway line end, a first line resistance between a large power grid end and a railway station end, a second line resistance between a railway station end and a traction depot end, and a third line resistance between a traction depot end and a railway line end; the first load information includes a first port voltage of a port connected to a large power grid end in the first energy router, a current phase difference between the first port voltage and the current, a second port voltage of a port connected to a traction depot end in the first energy router, a first AC / DC load consumption power, a first non-traditional output power and a first traction power grid consumption power at the railway station end, a first initial energy storage consumption power at the railway station end rate, and a first threshold interval corresponding to the energy storage port at the railway station end; the second load information includes the third port voltage of the port connected to the station end in the second energy router, the fourth port voltage of the port connected to the railway line end in the second energy router, the second AC and DC load consumption power, the second non-traditional output power and the second traction grid consumption power of the traction station end, the second initial energy storage consumption power of the traction station end, and the second threshold interval corresponding to the energy storage port at the traction station end; the third load information includes the fifth port voltage of the port connected to the traction station end in the third energy router, the third non-traditional output power and the third traction grid consumption power of the railway line end, the third initial energy storage consumption power of the railway line end, and the third threshold interval corresponding to the energy storage port at the railway line end; A calculation module is configured to calculate target scheduling data based on the first load information, the second load information, the third load information, the first line resistance, the second line resistance, and the third line resistance, and a preset collaborative scheduling calculation formula, wherein the target scheduling data includes a first target energy storage consumption power at the railway station end, a second target energy storage consumption power at the traction depot end, and a third target energy storage consumption power at the railway line end, as well as a first target transmission power transmitted from the railway station end to the large power grid end, a second target transmission power input from the traction depot end to the railway station end, and a third target transmission power input from the railway line end to the traction depot end. The preset collaborative scheduling calculation formula for calculating the target scheduling data includes: in, U 1 represents the first port voltage, U 2 represents the second port voltage, U 3 represents the third port voltage, U 4 represents the fourth port voltage, U 5 represents the fifth port voltage, represents the current phase difference, P PV1 represents the first non-conventional output power, P PV2 represents the second non-conventional output power, P PV3 represents the third non-conventional output power, P Tra1 represents the power consumption of the first traction grid, P Tra2 represents the power consumption of the second traction grid, P Tra3 represents the power consumption of the third traction grid, P load1 represents the power consumed by the first AC / DC load, P load2 represents the power consumed by the second AC / DC load, P bat1 represents the first target energy storage consumption power, P bat2 represents the second target energy storage consumption power, P bat3 represents the third target energy storage consumption power, P 1 represents the first target transmission power, P 2 represents the second target transmission power, P 3 represents the third target transmission power, R 1 represents the first line resistance, R 2 represents the second line resistance, R 3 represents the third line resistance; when the first target energy storage consumes power P bat1 , Second target energy storage consumption power P bat2 and the third target energy storage consumption power P bat3 If they are respectively the same as the corresponding first initial energy storage consumption power, second initial energy storage consumption power and third initial energy storage consumption power, this calculation formula cannot be used and no scheduling is required.

7. A collaborative energy scheduling system, characterized in that: It includes a master control end, a large power grid end, a railway station end, a traction end and a railway line end, wherein the railway station end, the traction end and the railway line end are respectively provided with a first energy router, a second energy router and a third energy router, wherein: The master control terminal is connected to the large power grid terminal, the first energy router, the second energy router, and the third energy router respectively, and is provided with a memory and a processor; the memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions, which, when executed by the processor, implement the steps of the collaborative energy scheduling method according to any one of claims 1 to 5; The large power grid end is connected to the AC grid-connected port of the first energy router, and the large power grid end is used to perform bidirectional AC power transmission with the railway station end through the AC grid-connected port; The first energy router is provided with an energy storage DC port, a distributed non-traditional port, an AC grid-connected port, a traction network port, an interconnection port, an AC load port, and a DC load port; the energy storage DC port is used for storing energy; the distributed non-traditional port is used for receiving non-traditional electric energy; the traction network port is used for supplying power to the traction network; the interconnection port is connected to the first interconnection port of the second energy router, and the interconnection port is used for bidirectional energy flow with the second energy router; the AC / DC load port is used for supplying power to other AC / DC loads; The second energy router is provided with an energy storage DC port, a distributed non-traditional port, a traction network port, a first interconnection port, a second interconnection port, and a DC load port; the second interconnection port is connected to the interconnection port of the third energy router, and the second interconnection port is used for bidirectional energy flow with the third energy router; The third energy router is provided with an energy storage DC port, a distributed non-traditional port, a traction network port and an interconnection port.

8. A computer-readable storage medium storing computer-executable instructions, characterized in that: When the computer executable instructions are executed by a processor, the steps of the collaborative energy scheduling method described in any one of claims 1 to 5 are implemented.

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