Traffic energy network system based on expressway chain type micro-grid and construction method thereof

Abstract

The invention provides a traffic energy network system based on an expressway chain type micro-grid and a construction method of the traffic energy network system, and belongs to the field of new energy and traffic fusion. In order to solve the problems of long power supply distance, high energy consumption and low scheduling efficiency of traditional centralized power supply in scattered power utilization scenes along the expressway, a'point-chain-network 'three-stage system is constructed: unit micro-grid nodes have independent power supply and local regulation and control capabilities, and adjacent nodes are flexibly coupled by a link coupling structure to realize energy complementation; the regional energy cloud control platform overall plans global scheduling; and node autonomy, chain cooperation, regional management and control and virtual power plant functions are matched. The system adapts to the long and narrow layout of the expressway, the emergency anti-interference capability and the renewable energy consumption rate are improved, intelligent scheduling is realized, and the power supply loss and the operation and maintenance cost are reduced.

Description

Technical Field

[0001] This invention relates to the field of new energy and transportation integration, specifically to a transportation energy network system based on a highway chain microgrid and its construction method. Background Technology

[0002] Currently, there are numerous scattered power consumption scenarios along highways, including charging stations, service areas, communication base stations, and tunnel lighting. These scenarios are characterized by large geographical spans, uneven energy distribution, and strong fluctuations in power load, leading to significant problems with traditional centralized power supply methods: firstly, the power supply distance is long, resulting in high energy loss during transmission; secondly, the scheduling efficiency is low for dispersed and fluctuating loads, making it difficult to adapt to the real-time power demand of different scenarios.

[0003] With the development of renewable energy technologies, energy storage technologies, and intelligent control technologies, microgrids are being used more and more widely in local energy supply. Especially in highway scenarios, the construction of a microgrid system with a "point-chain-grid" structure can specifically address the shortcomings of traditional power supply, and has the technical and economic advantages of achieving synergistic optimization of source-grid-load-storage and regional energy self-sufficiency, making it an important direction for improving highway energy supply.

[0004] To address this, a transportation energy network system based on a highway chain microgrid and its construction method are proposed. Summary of the Invention

[0005] The present invention aims to solve the problems mentioned in the background art by providing a transportation energy network system based on highway chain microgrids and its construction method.

[0006] The specific technical solution is as follows: A transportation energy network system based on a highway chain microgrid includes a unit microgrid node group, link coupling units, and a regional energy cloud control platform. Each unit microgrid node group comprises at least two unit microgrid nodes, each equipped with a distributed renewable energy module, an energy storage module, a load management module, an energy router, and a local energy management system. The local energy management system is communicatively connected to the distributed renewable energy module, energy storage module, load management module, and energy router to monitor and regulate energy within the node. The link coupling units are located along the main line of the highway and are connected to adjacent unit microgrid nodes in the unit microgrid node group via energy routers. This allows for flexible coupling of adjacent unit microgrid nodes to form a chain microgrid, enabling energy complementarity and load transfer between nodes. The regional energy cloud control platform is communicatively connected to each link coupling unit and is used to comprehensively plan the energy distribution, supply and demand relationship, load forecasting, and scheduling strategies along the highway, achieving integrated operation and scheduling optimization of the energy source, grid, load, and storage systems.

[0007] In the aforementioned transportation energy network system based on highway chain microgrids, the unit microgrid nodes are deployed at highway service areas, toll stations, or tunnel entrances.

[0008] The aforementioned transportation energy network system based on highway chain microgrids includes, in which the distributed renewable energy module comprises at least one of photovoltaic module and wind power module.

[0009] In the aforementioned transportation energy network system based on highway chain microgrids, the link coupling unit utilizes communication optical cables and cable channels laid along the main line of the highway to connect with adjacent unit microgrid nodes.

[0010] The aforementioned transportation energy network system based on highway chain microgrids includes a link coupling unit that has fault isolation, power flow control, and real-time monitoring functions to ensure the stability and security of the chain microgrid operation.

[0011] The aforementioned transportation energy network system based on highway chain microgrids includes a local energy management system configured with node autonomous operation logic. Under normal operating conditions, the system controls the microgrid nodes to prioritize the consumption of electricity generated by distributed renewable energy modules. When there is a surplus of electricity, the system controls the energy storage modules to charge. When there is a shortage of electricity, the system controls the energy router to dispatch electricity from the chain microgrid composed of link coupling units to supplement the power supply.

[0012] The aforementioned transportation energy network system based on highway chain microgrids includes a regional energy cloud control platform that can acquire real-time load data, meteorological data, and electricity price information along the highway, and generate optimal scheduling strategies based on the aforementioned data to achieve intelligent energy management.

[0013] The aforementioned transportation energy network system based on highway chain microgrids further includes a virtual power plant module. This virtual power plant module is communicatively connected to a regional energy cloud control platform and is used to aggregate controllable resources in the microgrid node group of the aggregation unit to form a virtual power plant for participating in electricity market transactions or providing power ancillary services.

[0014] In the aforementioned transportation energy network system based on highway chain microgrids, the link coupling unit works in conjunction with the energy router to achieve chain-based coordinated scheduling. The energy router dynamically adjusts the power flow direction and magnitude within the chain microgrid to respond to changes in load-side demand and achieve peak shaving and valley filling.

[0015] In the aforementioned transportation energy network system based on highway chain microgrids, each link coupling unit is equipped with a regional energy regulator, which is communicatively connected to a regional energy cloud control platform. When large-scale energy fluctuations or emergencies occur, the regional energy cloud control platform uses the regional energy regulator to uniformly schedule each link coupling unit, thereby achieving load balancing and emergency power supply between different chain microgrids.

[0016] This invention also provides a method for constructing a transportation energy network system based on the above-mentioned highway chain microgrid, comprising the following steps: S1. Construction of Unit Microgrid Node Groups: At least two unit microgrid nodes are deployed at predetermined locations along the highway. Each unit microgrid node is equipped with a distributed renewable energy module, an energy storage module, a load management module, an energy router, and a local energy management system. The local energy management system is connected to the distributed renewable energy module, the energy storage module, the load management module, and the energy router to realize the monitoring and control of energy within the node. S2. Construct a link coupling structure: Deploy link coupling units along the main line of the highway, and use the existing communication optical cables and cable channels of the main line of the highway to connect the link coupling units with the adjacent unit microgrid nodes in step 1 through energy routers, so that the adjacent unit microgrid nodes are flexibly coupled to form a chain microgrid; S3. Establish a regional energy cloud control platform: Deploy a regional energy cloud control platform, establish communication connections between the regional energy cloud control platform and each link coupling unit in step 2, configure the energy planning function of the regional energy cloud control platform so that it can obtain energy distribution, supply and demand relationship and load forecast data along the highway; S4. Configure system operation logic: Set up node autonomous operation logic in the local energy management system, set up chain-based collaborative scheduling logic in the link coupling unit, and set up regional centralized management and control logic in the regional energy cloud control platform to form a three-level operation control system.

[0017] The present invention has the following beneficial effects: 1. Improved structural adaptability: In response to the long and narrow corridor layout of highways, a "point-chain-network" structure is adopted. Nodes are deployed near the power consumption scenarios (service areas, toll stations, etc.), and links are connected by existing channels. This avoids the long-distance layout of traditional centralized power supply, making the system fully adaptable to the geographical features and power consumption scenario distribution of highways, and solving the problem of mismatch between traditional layout and scenarios.

[0018] 2. Enhanced System Resilience: Through the chain-coupled structure, the links have fault isolation capabilities, and local faults are limited to a small area and do not affect the overall system operation; at the same time, the regional cloud control platform can dispatch energy across the chain to provide emergency power supply for critical loads in the event of emergencies. Compared with traditional islanded microgrids, the system's anti-interference capability and emergency support capability are significantly improved, ensuring the safety of critical power consumption.

[0019] 3. Improved energy utilization: Nodes prioritize the consumption of local renewable energy, reducing green electricity waste; Link-based coordinated scheduling enables energy sharing among multiple nodes, avoiding energy surplus or deficit in a single node; Regional cloud control platform coordinates overall energy allocation, further optimizing source-grid-load-storage coordination, and the three together improve the local consumption rate of renewable energy, reduce dependence on traditional fossil fuels, and reduce energy transmission losses.

[0020] 4. Intelligent Dispatch: The local EMS, regional energy regulator, and cloud control platform all have data monitoring and automatic decision-making capabilities. They can obtain load, weather, and electricity price data in real time, dynamically adjust energy flow and dispatch strategies, and eliminate the need for frequent manual intervention. Compared with traditional manual dispatch, dispatch efficiency is greatly improved, and the optimal solution can be formulated based on real-time data to avoid blind energy supply.

[0021] 5. Improved economic benefits: On the one hand, the link relies on existing communication optical and cable channels for construction, eliminating the need to build a large number of new transmission facilities and reducing construction costs; on the other hand, it reduces long-distance power supply losses, enhances energy self-sufficiency, reduces dependence on external power grids, and expands revenue channels through virtual power plant functions, thereby reducing overall operation and maintenance costs and energy expenditures, resulting in significant economic benefits. Attached Figure Description

[0022] Figure 1 A schematic diagram of the composition of a transportation energy network system based on a highway chain microgrid provided in an embodiment of the present invention; Figure 2 A flowchart illustrating the construction method of a transportation energy network system based on a highway chain microgrid, provided in an embodiment of the present invention. Detailed Implementation

[0023] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this application. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0025] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0026] In the description of this invention, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating a connection between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] Example 1 The transportation energy network system based on a highway chain microgrid provided in this embodiment, such as Figure 1 As shown, the system includes a microgrid node group, link coupling units, and a regional energy cloud control platform. Each microgrid node group contains at least two microgrid nodes, each equipped with a distributed renewable energy module, an energy storage module, a load management module, an energy router, and a local energy management system. The local energy management system communicates with the distributed renewable energy module, energy storage module, load management module, and energy router to monitor and regulate energy within the node. Link coupling units are installed along the main highway line and connected to adjacent microgrid nodes in the microgrid node group via energy routers. These units flexibly couple adjacent microgrid nodes to form a chain-like microgrid, enabling energy complementarity and load transfer between nodes. The regional energy cloud control platform communicates with each link coupling unit and is used to comprehensively plan the energy distribution, supply and demand, load forecasting, and scheduling strategies along the highway, achieving integrated operation and scheduling optimization of the energy source, grid, load, and storage systems.

[0028] This solution achieves multi-dimensional technical benefits by constructing a three-tiered system structure: "unit microgrid node group - link coupling unit - regional energy cloud control platform." Firstly, the communication connection between the local energy management system and each energy module within the unit microgrid node enables real-time monitoring and control of energy within the node, providing a foundation for independent node operation and resolving the problem of disordered energy management in a single node. Secondly, the link coupling unit flexibly couples adjacent nodes into a chain-like microgrid, breaking the limitations of traditional isolated point-like microgrids, achieving energy complementarity and load transfer between nodes, and alleviating energy supply and demand imbalances caused by large geographical spans and uneven energy distribution. Thirdly, the regional energy cloud control platform comprehensively plans energy along the route, optimizing energy distribution and supply-demand relationships, improving dispatch efficiency, and addressing the problems of long distances, high energy consumption, and low dispatch efficiency associated with traditional centralized power supply. Ultimately, it achieves integrated operation of source, grid, load, and storage, enhancing the overall coordination of system energy management.

[0029] Specifically, in this embodiment, the unit microgrid nodes are deployed at highway service areas, toll stations, or tunnel entrances. This solution deploys the unit microgrid nodes in locations such as highway service areas, toll stations, and tunnel entrances, which are core power consumption scenarios along the highway (such as charging in service areas, power consumption for toll station equipment, and tunnel lighting). The nearby deployment of nodes can directly meet the power needs of these scenarios, reducing power loss during long-distance transmission. At the same time, it avoids laying long-distance power lines separately to meet the power needs of these dispersed scenarios, improving the targetedness and convenience of power supply, and making the system more adaptable to the distribution characteristics of power consumption scenarios along the highway.

[0030] Specifically, in this embodiment, the distributed renewable energy module includes at least one of a photovoltaic module and a wind power module. This scheme explicitly states that the distributed renewable energy module includes at least one of a photovoltaic module and a wind power module. Photovoltaics and wind power are green renewable energy sources. By configuring such modules in the unit microgrid nodes, the system's utilization of renewable energy can be increased, reducing dependence on traditional fossil fuels. Simultaneously, highways possess geographical conditions suitable for developing photovoltaic (e.g., service area rooftops, toll station sites) and wind power (e.g., open areas along the route). The application of these modules can enhance the local energy self-sufficiency of the nodes, thereby increasing the local consumption rate of renewable energy and reducing waste during energy transmission.

[0031] Specifically, in this embodiment, the link coupling unit utilizes the communication optical cables and cable channels laid along the main line of the highway to connect with adjacent microgrid nodes. This solution uses the existing communication optical cables and cable channels along the main line of the highway to connect the link coupling unit and the nodes, eliminating the need to construct a large number of additional physical transmission channels. This reduces construction costs and difficulties during the system construction phase, while avoiding excessive modifications to existing highway facilities and the surrounding environment caused by constructing new channels. Furthermore, the connection structure built based on existing channels better suits the narrow corridor layout of the highway, ensuring the stability of the connection between the link coupling unit and each node, and improving the feasibility and economy of system construction.

[0032] Specifically, in this embodiment, the link coupling unit possesses fault isolation, power flow control, and real-time monitoring functions to ensure the stability and security of the chained microgrid operation. This solution endows the link coupling unit with fault isolation, power flow control, and real-time monitoring capabilities. The fault isolation function can limit the fault scope to a localized area when a fault occurs at a node or in a localized link, preventing the fault from spreading to the entire chained microgrid, ensuring the normal operation of the remaining parts, and improving the system's immunity to disturbances. The power flow control function can adjust the direction and magnitude of energy flow according to the energy supply and demand between nodes, ensuring reasonable energy allocation. The real-time monitoring function can monitor the link's operating status in real time, promptly detect operational anomalies, and facilitate timely handling. These three functions work together to ensure the stability and security of the chained microgrid operation and reduce the impact of faults on power consumption scenarios.

[0033] Specifically, in this embodiment, the local energy management system is configured with node autonomous operation logic. Under normal operating conditions, the control unit microgrid nodes prioritize the consumption of electricity generated by distributed renewable energy modules. When there is a surplus of electricity, the energy storage modules are charged. When there is a shortage of electricity, the energy router is controlled to dispatch electricity from the chain microgrid composed of link coupling units to supplement the power supply. This scheme, through the node autonomous operation logic of the local energy management system, prioritizes the consumption of electricity generated by distributed renewable energy during normal operation, which can maximize the utilization of local green energy and reduce the idle waste of renewable energy. When there is a surplus of electricity, the energy storage modules are charged to store excess electricity, preventing electricity loss and reserving energy for subsequent peak electricity demand or insufficient energy production. When there is a shortage of electricity, the electricity is dispatched from the chain microgrid to supplement the power supply, which can prevent the nodes from experiencing power outages due to energy shortages, ensure the reliability of independent node operation, and improve the flexibility of node energy utilization.

[0034] Specifically, in this embodiment, the regional energy cloud control platform can acquire real-time load data, meteorological data, and electricity price information along the highway, and generate an optimal dispatch strategy based on the above data to achieve intelligent energy management. In this solution, the regional energy cloud control platform acquires real-time load, meteorological, and electricity price data and generates an optimal dispatch strategy. Real-time load data allows dispatch to align with actual electricity demand, avoiding energy waste or insufficient supply caused by blind energy supply; meteorological data (such as sunshine and wind conditions) can predict the energy output of photovoltaic and wind power modules, allowing for advance adjustments to the dispatch plan and reducing the impact of energy output fluctuations on the system; electricity price data can guide the system to store more electricity during off-peak hours and use stored electricity rationally during peak hours, reducing operating costs; based on this data, the optimal strategy makes energy management more precise, achieves intelligent system operation, and improves energy management efficiency.

[0035] Specifically, in this embodiment, the system is also equipped with a virtual power plant functional module. This module communicates with the regional energy cloud control platform and is used to aggregate controllable resources from the microgrid node group of the aggregation unit to form a virtual power plant, which can then participate in electricity market transactions or provide ancillary power services. This scheme uses the virtual power plant functional module to aggregate controllable resources from the microgrid nodes of the aggregation unit to form a virtual power plant. The dispersed node resources, after aggregation, achieve economies of scale, enabling participation in electricity market transactions and bringing additional economic benefits to the system, thus improving the single-function mode of simply supplying electricity. Simultaneously, the virtual power plant can provide ancillary power services (such as peak shaving and frequency regulation), enhancing the system's support capacity for the external power grid, expanding the system's functional value, and enabling the highway energy network not only to meet its own electricity needs but also to participate in the coordinated operation of the power system, thereby improving the overall efficiency of the system.

[0036] Specifically, in this embodiment, the link coupling unit and the energy router work together to achieve chain-like coordinated scheduling. The energy router dynamically adjusts the power flow direction and magnitude within the chained microgrid to respond to changes in load demand and achieve peak shaving and valley filling. This scheme achieves chain-like coordinated scheduling through the cooperation of the link coupling unit and the energy router. The energy router dynamically adjusts the power flow direction and magnitude and can flexibly allocate energy according to the load changes of each node: when the load of a node increases sharply (peak hours), the surplus energy of other nodes in the link can be scheduled to that node; when the load of a node decreases sharply (valley hours), the surplus energy of that node can be scheduled to other demand nodes or stored, achieving peak shaving and valley filling, balancing load fluctuations within the link, avoiding overload or idle energy in some nodes, improving the adaptability of the chained microgrid to load changes, and improving the overall energy utilization efficiency.

[0037] Specifically, in this embodiment, the link coupling unit is equipped with a regional energy regulator, which is communicatively connected to the regional energy cloud control platform. When large-scale energy fluctuations or emergencies occur, the regional energy cloud control platform uses the regional energy regulator to uniformly schedule each link coupling unit, achieving load balancing and emergency power supply between different chain microgrids. In this scheme, the regional energy regulator of the link coupling unit is communicatively connected to the regional energy cloud control platform. During large-scale energy fluctuations (such as a sudden decrease in renewable energy output in a certain area or a simultaneous increase in load at multiple nodes) or emergencies (such as local power supply failures), the regional energy cloud control platform can transmit unified scheduling instructions to each link through the regional energy regulator, coordinating energy distribution between different chain microgrids to achieve load balancing. At the same time, for emergency scenarios (such as power outages of critical loads), energy from other areas can be quickly allocated for emergency power supply, improving the system's ability to cope with abnormal situations, ensuring the power safety of critical power consumption scenarios along highways (such as tunnel lighting and emergency communications), and enhancing the overall resilience of the system.

[0038] Example 2 This embodiment provides a method for constructing a transportation energy network system based on the highway chain microgrid of Embodiment 1, such as... Figure 2 As shown, it includes the following steps: S1. Construction of Unit Microgrid Node Groups: At least two unit microgrid nodes are deployed at predetermined locations along the highway. Each unit microgrid node is equipped with a distributed renewable energy module, an energy storage module, a load management module, an energy router, and a local energy management system. The local energy management system is connected to the distributed renewable energy module, the energy storage module, the load management module, and the energy router to realize the monitoring and control of energy within the node. S2. Construct a link coupling structure: Deploy link coupling units along the main line of the highway, and use the existing communication optical cables and cable channels of the main line of the highway to connect the link coupling units with the adjacent unit microgrid nodes in step 1 through energy routers, so that the adjacent unit microgrid nodes are flexibly coupled to form a chain microgrid; S3. Establish a regional energy cloud control platform: Deploy a regional energy cloud control platform, establish communication connections between the regional energy cloud control platform and each link coupling unit in step 2, configure the energy planning function of the regional energy cloud control platform so that it can obtain energy distribution, supply and demand relationship and load forecast data along the highway; S4. Configure system operation logic: Set up node autonomous operation logic in the local energy management system, set up chain-based collaborative scheduling logic in the link coupling unit, and set up regional centralized management and control logic in the regional energy cloud control platform to form a three-level operation control system.

[0039] This construction method achieves progressive technical effects through step-by-step construction and logical configuration: First, in step 1, the construction of unit microgrid nodes and the configuration of communication connections with the local energy management system endow each node with independent energy monitoring and control capabilities, avoiding energy waste or insufficient supply caused by a lack of autonomous management in a single node, and providing support for the basic operation of the system; Second, step 2 utilizes existing communication optical and cable channels along the highway to construct a link coupling structure, eliminating the need for constructing a large number of additional transmission facilities, reducing construction costs and changes to the roadside environment. Simultaneously, through flexible coupling, a chain-like microgrid is formed, breaking the limitations of traditional point-like isolated microgrids, enabling energy complementarity and load sharing between nodes. The transfer creates conditions; third, the construction and communication connection configuration of the regional energy cloud control platform in step 3 enables unified acquisition and overall planning of energy data along the highway, solving the problems of low efficiency and high energy consumption of traditional centralized power supply dispatch, and improving the overall coordination of energy dispatch of the system; fourth, the configuration of the three-level operation logic in step 4 enables the system to prioritize the consumption of green energy through node autonomy and achieve peak shaving and valley filling through chain collaboration under normal operating conditions, and to ensure load balance and emergency power supply through regional centralized management and control under abnormal operating conditions, further enhancing the stability and resilience of system operation, and ultimately achieving integrated operation of source, grid, load and storage, improving the local consumption rate of renewable energy and the economic efficiency of system operation.

[0040] In summary, the transportation energy network system based on a highway chain microgrid provided in this embodiment achieves breakthroughs in multiple aspects, including structural adaptability, system resilience, energy utilization, intelligent scheduling, and economic benefits, through a three-level "point-chain-grid" structure and intelligent control logic. Specific effects are as follows: 1. Improved structural adaptability: In response to the long and narrow corridor layout of highways, a "point-chain-network" structure is adopted. Nodes are deployed near the power consumption scenarios (service areas, toll stations, etc.), and links are connected by existing channels. This avoids the long-distance layout of traditional centralized power supply, making the system fully adaptable to the geographical features and power consumption scenario distribution of highways, and solving the problem of mismatch between traditional layout and scenarios.

[0041] 2. Enhanced System Resilience: Through the chain-coupled structure, the links have fault isolation capabilities, and local faults are limited to a small area and do not affect the overall system operation; at the same time, the regional cloud control platform can dispatch energy across the chain to provide emergency power supply for critical loads in the event of emergencies. Compared with traditional islanded microgrids, the system's anti-interference capability and emergency support capability are significantly improved, ensuring the safety of critical power consumption.

[0042] 3. Improved energy utilization: Nodes prioritize the consumption of local renewable energy, reducing green electricity waste; Link-based coordinated scheduling enables energy sharing among multiple nodes, avoiding energy surplus or deficit in a single node; Regional cloud control platform coordinates overall energy allocation, further optimizing source-grid-load-storage coordination, and the three together improve the local consumption rate of renewable energy, reduce dependence on traditional fossil fuels, and reduce energy transmission losses.

[0043] 4. Intelligent Dispatch: The local EMS, regional energy regulator, and cloud control platform all have data monitoring and automatic decision-making capabilities. They can obtain load, weather, and electricity price data in real time, dynamically adjust energy flow and dispatch strategies, and eliminate the need for frequent manual intervention. Compared with traditional manual dispatch, dispatch efficiency is greatly improved, and the optimal solution can be formulated based on real-time data to avoid blind energy supply.

[0044] 5. Improved economic benefits: On the one hand, the link relies on existing communication optical and cable channels for construction, eliminating the need to build a large number of new transmission facilities and reducing construction costs; on the other hand, it reduces long-distance power supply losses, enhances energy self-sufficiency, reduces dependence on external power grids, and expands revenue channels through virtual power plant functions, thereby reducing overall operation and maintenance costs and energy expenditures, resulting in significant economic benefits.

[0045] Working principle: This application is based on a three-tiered "point-chain-network" structure to build a system, with each level working together to achieve efficient energy management and scheduling. The principle is as follows: 1. Microgrid Node (Point) Principle: Each node is equipped with distributed renewable energy (photovoltaic, wind power, etc.), energy storage devices, a load management unit, an energy router, and a local EMS. The local EMS communicates with each module within the node, monitoring energy output (such as photovoltaic power generation and wind power output), energy storage status, and load demand in real time. It autonomously controls energy flow—prioritizing the supply of local renewable energy to the load, charging the energy storage device when there is a surplus, and triggering the energy router to obtain power from external links when there is a shortage, ensuring the stability of the node's independent operation.

[0046] 2. Link Coupling Structure (Chain) Principle: Utilizing existing communication optical and electrical cable channels along the main highway, adjacent nodes are flexibly coupled into a chain-like microgrid via energy routers. Within the link, a regional energy regulator coordinates and monitors the energy supply and demand status of each node in real time. The energy routers dynamically adjust the power flow direction and magnitude: when a node experiences peak load, surplus energy from other nodes within the link is used to supplement it; when a node has energy surplus, excess power is transferred to nodes with load demand or energy storage devices, achieving energy complementarity and peak shaving within the link. Simultaneously, it possesses fault isolation capabilities to prevent the spread of localized faults.

[0047] 3. Regional Energy Cloud Control Platform (Network) Principle: As an upper-level control platform, it communicates with the coupling structure of each link, aggregating energy data (output, energy storage, load), meteorological data (affecting renewable energy output), and electricity price data from all nodes along the highway. Through comprehensive analysis, it formulates a global dispatch strategy: Under normal operating conditions, it only makes minor adjustments to energy fluctuations that are difficult to balance at the link level; when large-scale energy fluctuations occur (such as a sudden drop in regional renewable energy output) or emergencies (such as local power supply failures), it uniformly dispatches energy between links to achieve cross-link load balancing and emergency power supply. At the same time, it can aggregate controllable resources from each node to form a virtual power plant, participate in electricity market transactions, or provide ancillary services.

[0048] How to use: This system needs to be used in accordance with different operating scenarios and operated according to a three-level control logic, as detailed below: 1. Node autonomous use under normal operating conditions: The system defaults to node autonomous mode, and the local EMS starts automatically. First, it monitors the real-time output of local renewable energy (such as photovoltaic panels and wind turbines). If the output meets the current load demand, the renewable energy is directly delivered to the load. If the output is in surplus, the EMS controls the energy storage device to charge and store the excess power. If the output is insufficient, the EMS triggers the energy router to send a power demand signal to the adjacent link and dispatches power from the link to supplement it, ensuring stable power supply to the node load.

[0049] 2. Link-level coordinated scheduling: When multiple nodes in the link experience energy supply and demand imbalance (such as a sudden increase in charging load in a service area or insufficient energy storage in a single node), the regional energy regulator automatically intervenes. By monitoring the energy status of each node in the link in real time, calculating the energy gap and surplus, and controlling the energy routers of relevant nodes to adjust the power flow, the regulator transfers the power from the surplus node to the gap node or calls on the shared energy storage resources in the link to supplement the load, thereby achieving peak shaving and valley filling of the load in the link and maintaining the overall energy balance of the link.

[0050] 3. Centralized regional control under abnormal operating conditions: When large-scale energy fluctuations occur (such as a sudden drop in photovoltaic output along the line due to continuous rain) or emergencies (such as a link failure or power outage of critical loads such as tunnel lighting), staff can activate the centralized control mode through the regional energy cloud control platform. The cloud control platform automatically aggregates energy data from the entire line and generates a global dispatch plan: if a link is short of energy, energy from other surplus links is dispatched to supplement it; if a link fails, the fault area is cut off through the fault isolation function, and power from surrounding links is dispatched to supply power to critical loads in the fault area (such as tunnel lighting and emergency communications); in addition, the virtual power plant function can be activated through the cloud control platform to aggregate controllable resources within the system (such as energy storage and adjustable loads) to participate in external electricity market transactions or provide peak-shaving auxiliary services.

[0051] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A transportation energy network system based on a highway chain-type microgrid, characterized in that, The system includes a microgrid node group, a link coupling unit, and a regional energy cloud control platform. Each microgrid node group comprises at least two microgrid nodes, each equipped with a distributed renewable energy module, an energy storage module, a load management module, an energy router, and a local energy management system. The local energy management system is communicatively connected to the distributed renewable energy module, energy storage module, load management module, and energy router to monitor and regulate energy within the node. The link coupling unit is located along the main line of the highway and is connected to adjacent microgrid nodes in the microgrid node group via energy routers. This allows for flexible coupling of adjacent microgrid nodes to form a chain-like microgrid, enabling energy complementarity and load transfer between nodes. The regional energy cloud control platform is connected to each link coupling unit for overall planning of energy distribution, supply and demand, load forecasting and scheduling strategies along the highway, so as to realize integrated operation and scheduling optimization of energy source, grid, load and storage.

2. The transportation energy network system based on a highway chain microgrid according to claim 1, characterized in that, The unit microgrid nodes are deployed at highway service areas, toll stations, or tunnel entrances.

3. The transportation energy network system based on a highway chain microgrid according to claim 1, characterized in that, The distributed renewable energy module includes at least one of a photovoltaic module and a wind power module.

4. The transportation energy network system based on a highway chain microgrid according to claim 1, characterized in that, The link coupling unit utilizes communication optical cables and cable channels laid along the main highway to connect with adjacent unit microgrid nodes.

5. The transportation energy network system based on a highway chain microgrid according to claim 1, characterized in that, The local energy management system is configured with node autonomous operation logic. Under normal operating conditions, the control unit microgrid nodes prioritize the consumption of electricity generated by distributed renewable energy modules. When there is a surplus of electricity, the control unit controls the energy storage modules to charge. When there is a shortage of electricity, the control unit controls the energy router to dispatch electricity from the chain microgrid composed of link coupling units to supplement the power.

6. The transportation energy network system based on a highway chain microgrid according to claim 1, characterized in that, The regional energy cloud control platform can acquire real-time load data, meteorological data, and electricity price information along the highway, and generate optimal scheduling strategies based on the above data to achieve intelligent energy management.

7. The transportation energy network system based on a highway chain microgrid according to claim 1, characterized in that, The system is also equipped with a virtual power plant function module, which is connected to the regional energy cloud control platform to form a virtual power plant by aggregating controllable resources in the microgrid node group of the aggregation unit, so as to participate in electricity market transactions or provide electricity ancillary services.

8. The transportation energy network system based on a highway chain microgrid according to claim 1, characterized in that, The link coupling unit works with the energy router to achieve chain-based collaborative scheduling. The energy router dynamically adjusts the power flow direction and magnitude within the chain-based microgrid to respond to changes in load-side demand and achieve peak shaving and valley filling.

9. The transportation energy network system based on a highway chain microgrid according to any one of claims 1 to 8, characterized in that, The link coupling unit is equipped with a regional energy regulator, which is communicatively connected to the regional energy cloud control platform. When large-scale energy fluctuations or emergencies occur, the regional energy cloud control platform uses the regional energy regulator to uniformly schedule each link coupling unit, thereby achieving load balancing and emergency power supply between different chain microgrids.

10. A method for constructing a transportation energy network system based on a highway chain-type microgrid according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1. Construction of Unit Microgrid Node Groups: At least two unit microgrid nodes are deployed at predetermined locations along the highway. Each unit microgrid node is equipped with a distributed renewable energy module, an energy storage module, a load management module, an energy router, and a local energy management system. The local energy management system is connected to the distributed renewable energy module, the energy storage module, the load management module, and the energy router to realize the monitoring and control of energy within the node. S2. Construct a link coupling structure: Deploy link coupling units along the main line of the highway, and use the existing communication optical cables and cable channels of the main line of the highway to connect the link coupling units with the adjacent unit microgrid nodes in step 1 through energy routers, so that the adjacent unit microgrid nodes are flexibly coupled to form a chain microgrid; S3. Establish a regional energy cloud control platform: Deploy a regional energy cloud control platform, establish communication connections between the regional energy cloud control platform and each link coupling unit in step 2, configure the energy planning function of the regional energy cloud control platform so that it can obtain energy distribution, supply and demand relationship and load forecast data along the highway; S4. Configure system operation logic: Set up node autonomous operation logic in the local energy management system, set up chain-based collaborative scheduling logic in the link coupling unit, and set up regional centralized management and control logic in the regional energy cloud control platform to form a three-level operation control system.

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