System and method for collecting and sending out land low-frequency new energy

Abstract

The embodiment of the invention provides a land low-frequency new energy collecting and sending-out system and method, and the system comprises a low-frequency new energy power generation module, a low-frequency collecting module, a low-frequency power transmission system, and a low-frequency grid-connected module, the low-frequency new energy power generation module is connected with a low-frequency collecting switching station of the low-frequency collecting module through a plurality of low-frequency circuit breakers, and the low-frequency power transmission system is connected with the low-frequency grid-connected module. The low-frequency collection module is connected with a low-frequency overhead line of the low-frequency power transmission system through a low-frequency circuit breaker, and the low-frequency overhead line in the low-frequency power transmission system is connected with a low-frequency transformer in the low-frequency grid-connected module through a low-frequency circuit breaker. A low-frequency transformer in the low-frequency grid-connected module is connected with a power frequency main power grid through an AC-AC frequency converter and a power frequency circuit breaker; according to the invention, large-scale land new energy can be collected and sent out remotely, new energy consumption is promoted, and the power grid efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of power transmission systems, and specifically to an onshore low-frequency new energy collection and transmission system and method. Background Art

[0002] In the context of global response to climate change, the development of renewable energy, especially onshore new energy such as wind and solar energy, has become an important trend. However, since resource-rich wind power and photovoltaic power stations are mostly located in remote areas, these stations are often far away from the load center, and conventional power transmission methods face many challenges in long-distance transmission. Therefore, in order to support the long-distance and high-efficiency transmission of large-scale renewable energy power generation, a new type of power transmission technology is urgently needed to meet this demand.

[0003] Although the traditional industrial frequency AC power transmission has been mature in application, it has significant defects in long-distance transmission. As the transmission distance increases, the transmission loss of the industrial frequency AC system increases significantly and the transmission efficiency decreases significantly. In addition, long-distance AC transmission lines, especially those over hundreds of kilometers, are susceptible to system oscillations, instability, and voltage fluctuations. The stability of the industrial frequency AC power transmission system is poor, resulting in limited transmission capacity. Therefore, in the context of long-distance transmission, traditional industrial frequency AC power transmission cannot meet the transmission needs of large-scale new energy.

[0004] In contrast, although DC transmission is widely used in cross-regional power transmission due to its advantages of low loss and high efficiency. However, the DC transmission system relies on expensive converter stations to complete the conversion between AC and DC, and the high cost of DC circuit breakers makes DC transmission face limitations in system expansion and multi-node networking. In addition, due to the strong rigidity of the DC system, it does not have the flexibility of the industrial frequency AC system in terms of multi-node access management and dynamic scheduling. Therefore, although DC transmission is suitable for ultra-long-distance power transmission needs, it has limitations in the application scenarios of large-scale distributed new energy access. Summary of the invention

[0005] In response to the problems in the prior art, the present application provides an onshore low-frequency new energy collection and transmission system and method, which can collect and transmit large-scale onshore new energy over long distances, promote the consumption of new energy, and improve the efficiency of the power grid.

[0006] In order to solve at least one of the above problems, the present application provides the following technical solutions:

[0007] According to a first aspect of an embodiment of the present application, the present application provides an onshore low-frequency new energy collection and transmission system, comprising:

[0008] A low-frequency new energy power generation module, comprising a plurality of onshore low-frequency new energy power generation stations and a plurality of low-frequency booster stations, wherein the new energy power generation stations include wind power generation stations and photovoltaic power generation stations;

[0009] A low-frequency collection module, comprising a low-frequency collection switch station, connected to a plurality of low-frequency booster stations of the low-frequency new energy power generation module, for collecting and distributing the dispersed new energy;

[0010] A low-frequency power transmission system, comprising a single-circuit or double-circuit low-frequency overhead line, connected to the low-frequency collection switch station of the low-frequency collection module, for transmitting the collected new energy over long distances;

[0011] A low-frequency grid-connected module, comprising a low-frequency transformer, an AC-AC converter and an industrial frequency transformer, connected to the low-frequency overhead line of the low-frequency power transmission system and used for connection to the industrial frequency main power grid;

[0012] Among them, the low-frequency new energy power generation module is connected to the low-frequency collection switch station of the low-frequency collection module through multiple low-frequency circuit breakers, the low-frequency collection module is connected to the low-frequency overhead line of the low-frequency transmission system through a low-frequency circuit breaker, the low-frequency overhead line in the low-frequency transmission system is connected to the low-frequency transformer in the low-frequency grid-connected module through a low-frequency circuit breaker, and the low-frequency transformer in the low-frequency grid-connected module is connected to the industrial frequency main power grid through an AC-AC converter and an industrial frequency circuit breaker.

[0013] According to any embodiment of the present application, the low-frequency collection switch station in the low-frequency collection module is used to dynamically put into operation or cut off different new energy stations according to power flow demand.

[0014] According to any embodiment of the present application, the overhead line in the low-frequency power transmission system is a single-circuit or double-circuit line, which is used to select an appropriate line structure according to the calculation result of the transmission capacity.

[0015] According to any embodiment of the present application, the AC-AC converter in the low-frequency grid-connected module is used to convert low-frequency electric energy into electric energy suitable for the industrial frequency main power grid.

[0016] According to any embodiment of the present application, the power frequency circuit breaker is used to quickly disconnect from the main power grid in the event of a fault.

[0017] According to a second aspect of the embodiment of the present application, the present application provides a method for collecting and transmitting low-frequency new energy on land, comprising:

[0018] The low-frequency new energy power generation module generates low-frequency electric energy based on the electric energy generated by the wind power station and the photovoltaic power station, which is received by the respective low-frequency booster stations and the voltage is adjusted to a level suitable for collection;

[0019] The low-frequency booster station uses transformer units to boost the low-frequency electricity from wind power and photovoltaic power to a predetermined collection voltage level;

[0020] The low-frequency aggregation module collects and distributes the electric energy from different low-frequency booster stations, and uses the flow control device of the aggregation switch station to monitor and adjust the flow of electric energy, so as to collect and distribute the electric energy of multiple new energy power generation stations;

[0021] The low-frequency power transmission system transmits the collected low-frequency electric energy to the low-frequency grid-connected module over long distances through single-circuit or double-circuit low-frequency overhead lines, so as to transmit the collected low-frequency electric energy over long distances;

[0022] The low-frequency grid-connected module converts low-frequency electrical energy into electrical energy suitable for the industrial frequency main grid and transmits it to the main grid through the industrial frequency circuit breaker.

[0023] According to the third aspect of the embodiment of the present application, the present application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the onshore low-frequency new energy aggregation and transmission method when executing the program.

[0024] According to a fourth aspect of the embodiments of the present application, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the onshore low-frequency new energy aggregation and transmission method.

[0025] According to the fifth aspect of the embodiment of the present application, the present application provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the steps of the onshore low-frequency new energy aggregation and transmission method.

[0026] It can be seen from the above technical scheme that the present application provides an onshore low-frequency new energy collection and transmission system and method, the system comprising: a low-frequency new energy power generation module, a low-frequency collection module, a low-frequency transmission system, a low-frequency grid-connected module, wherein the low-frequency new energy power generation module is connected to the low-frequency collection switch station of the low-frequency collection module through multiple low-frequency circuit breakers, the low-frequency collection module is connected to the low-frequency overhead line of the low-frequency transmission system through a low-frequency circuit breaker, the low-frequency overhead line in the low-frequency transmission system is connected to the low-frequency transformer in the low-frequency grid-connected module through a low-frequency circuit breaker, and the low-frequency transformer in the low-frequency grid-connected module is connected to the industrial frequency main power grid through an AC-AC converter and an industrial frequency circuit breaker; the present application can collect and transmit large-scale onshore new energy over long distances, promote the consumption of new energy, and improve the efficiency of the power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is one of the schematic diagrams of the onshore low-frequency new energy collection and transmission system in the embodiment of the present application;

[0029] Figure 2 This is the second schematic diagram of the onshore low-frequency new energy collection and transmission system in the embodiment of the present application;

[0030] Figure 3 It is a flow chart of the method for collecting and transmitting low-frequency new energy on land in the embodiment of the present application;

[0031] Figure 4 It is a schematic diagram of the structure of an electronic device in an embodiment of the present application. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] The acquisition, storage, use, and processing of data in the technical solution of this application comply with the relevant provisions of national laws and regulations.

[0034] Taking into account the problems of traditional industrial frequency AC power transmission and DC power transmission, the present application provides an onshore low-frequency new energy collection and transmission system and method, which can collect and transmit large-scale onshore new energy over long distances, promote the consumption of new energy, and improve the efficiency of the power grid.

[0035] like Figure 1 As shown, the onshore low-frequency renewable energy collection and transmission system includes:

[0036] The low-frequency new energy power generation module 01 comprises a plurality of onshore low-frequency new energy power generation stations and a plurality of low-frequency booster stations, wherein the new energy power generation stations include wind power generation stations and photovoltaic power generation stations.

[0037] The low-frequency new energy power generation module includes multiple onshore wind power and photovoltaic power generation sites, and uniformly increases the output voltage through a low-frequency booster station. The module achieves the initial generation of electricity through wind power and photovoltaic power generation sites, solving the problem of inconsistent power generation and voltage specifications of scattered sites, and enabling multiple new energy power generation sources to be efficiently brought together. In addition, through low-frequency control, the module not only reduces the loss of traditional high-frequency power systems, but also reduces the impact on transmission stability, ensuring that the output low-frequency new energy can be stably input into subsequent modules.

[0038] The low-frequency collection module 02 includes a low-frequency collection switch station, which is connected to multiple low-frequency booster stations of the low-frequency new energy power generation module and is used to distribute and collect the dispersed new energy.

[0039] Exemplarily, the low-frequency collection module is a key bridge connecting the power generation and transmission modules, and includes a low-frequency collection switch station, which can connect to power inputs from different power generation sites. Its main function is to realize the distribution and collection of decentralized new energy trends, that is, to dynamically manage power input and output according to load demand and power generation conditions of each site, to ensure efficient use of power and transmission stability. The dynamic characteristics of the collection module enable it to flexibly switch the input or removal of sites according to trend demand, provide flexibility for the system, and optimize the flow of power. By adopting a low-frequency AC collection method, the module reduces line loss and mutual interference in a multi-source convergence environment, which helps to achieve long-distance, low-loss power transmission.

[0040] The low-frequency power transmission system 03 comprises a single-circuit or double-circuit low-frequency overhead line, which is connected to the low-frequency collection switch station of the low-frequency collection module and is used to transmit the collected new energy over long distances.

[0041] Exemplarily, the low-frequency transmission system is the transmission channel between the collection module and the grid-connected module, and the specific line selection depends on the transmission distance and capacity requirements. Single-circuit lines are suitable for medium-capacity transmission needs, while double-circuit lines can provide higher reliability and capacity support, and are suitable for large-scale transmission tasks. The low-frequency transmission system is designed to maximize transmission efficiency, reduce transmission losses by lowering line frequency, and ensure that new energy remains efficient during long-distance transmission. At the same time, the double-circuit design of the low-frequency overhead line can also ensure the continuous transmission of electricity when any line fails, thereby improving the safety and robustness of the system.

[0042] The low-frequency grid-connected module 04 comprises a low-frequency transformer, an AC-AC converter and an industrial frequency transformer, and is connected to the low-frequency overhead line of the low-frequency power transmission system for connection to the industrial frequency main power grid.

[0043] Exemplarily, the low-frequency grid-connected module is the terminal of the system, which is responsible for converting the power transmitted by the low-frequency transmission system into electric energy suitable for the industrial frequency main grid. The module includes a low-frequency transformer, an AC-AC converter and an industrial frequency transformer, which respectively undertake key tasks such as power conversion, frequency matching and voltage adjustment. The low-frequency transformer further adjusts the low-frequency power from the transmission system, while the AC-AC converter converts the low-frequency electric energy into electric energy that meets the requirements of the industrial frequency main grid, ensuring seamless connection with the main grid. Finally, the industrial frequency transformer achieves voltage matching so that the electric energy meets the transmission standards of the industrial frequency main grid.

[0044] Among them, the low-frequency new energy power generation module is connected to the low-frequency collection switch station of the low-frequency collection module through multiple low-frequency circuit breakers, the low-frequency collection module is connected to the low-frequency overhead line of the low-frequency transmission system through a low-frequency circuit breaker, the low-frequency overhead line in the low-frequency transmission system is connected to the low-frequency transformer in the low-frequency grid-connected module through a low-frequency circuit breaker, and the low-frequency transformer in the low-frequency grid-connected module is connected to the industrial frequency main power grid through an AC-AC converter and an industrial frequency circuit breaker.

[0045] Specifically, the electrical connection between the modules in this system is completed through multiple low-frequency circuit breakers to ensure the safety and reliability of the system. The low-frequency circuit breakers between the power generation module, the collection module, the transmission system and the grid-connected module cooperate with each other to achieve the smooth transmission of electric energy between the modules and fault isolation. Finally, the grid-connected module is connected to the main grid through the power frequency circuit breaker, so that the circuit breaker can isolate the problem module in time when a system failure occurs, ensure the normal operation of other modules and reduce the impact on the main grid, enhance the safety and fault tolerance of the system, and enable large-scale new energy transmission to operate more safely and reliably in complex environments.

[0046] Optionally, the output voltage of the wind power station in the low-frequency new energy power generation module is 0.69kV or 1.14kV, and the output voltage of the photovoltaic power station is 380V. The voltage is boosted to 35kV or 110kV through the low-frequency booster station. It can be understood that the above voltage range is only a preferred example and no specific limitation is made in this application.

[0047] Among them, by standardizing the voltage of the power station, the current can be effectively reduced and the line loss can be reduced, ensuring the efficient transmission of electricity in long-distance transmission. Secondly, the unified voltage output after boosting reduces the load of power generation equipment and transmission loss, ensuring that the low-frequency system can maintain lower power loss in long-distance transmission. In addition, the voltage of different stations is different, and it is adjusted to 35kV or 110kV through the booster station, so that each module can be smoothly connected under the uniform voltage condition, providing basic support for the stability and compatibility of the entire system.

[0048] In a specific embodiment, the low-frequency aggregation switch station in the low-frequency aggregation module is used to dynamically switch on or off different new energy stations according to power flow demand.

[0049] Among them, first of all, the power flow monitoring system will continuously collect the power generation, load demand and system power flow distribution of each new energy station, and upload these data to the central control unit. The central control unit uses power flow analysis algorithms (such as multi-node real-time monitoring algorithms based on power flow prediction models) to calculate the power demand of the system in real time, and determine whether it is necessary to increase or reduce the access of a certain new energy station. For example, when the load demand increases or the power generation of other stations is insufficient, the system automatically instructs the switch station to access the new station; when the demand decreases or some stations need to be shut down, the switch station will cut off the corresponding station.

[0050] Preferably, the switch control unit in this embodiment adopts a modular intelligent switch device, including electronic circuit breakers, fast disconnectors and high-frequency contactors, etc., to ensure that the power flow during the switching process is smooth and impact-free. The switch station is also equipped with an automatic protection device that can detect and protect against abnormal current, short circuit and overload during operation to ensure the safety of switching.

[0051] In addition, in order to adapt to changes in power flow demand, preset scene switching modes can also be added. For example, during the low-load period at night, the system can preset the shutdown of some photovoltaic stations and give priority to retaining wind farms to adapt to stable output under low load; during peak load periods, the input ratio of photovoltaic stations and wind farms can be increased through instructions to achieve precise load regulation and optimal power distribution.

[0052] In a specific embodiment, the overhead line in the low-frequency power transmission system is a single-circuit or double-circuit line, which is used to select an appropriate line structure according to the calculation result of the transmission capacity.

[0053] Among them, single-circuit lines are suitable for scenarios with medium capacity and short transmission distances. They adopt lightweight design to reduce construction and maintenance costs while ensuring economy in medium-capacity power transmission. In the case of large-capacity and long-distance transmission, double-circuit line structures are preferred. Double-circuit lines are designed with redundant backup, which can quickly switch to the backup line when one line fails, ensuring the continuity of power transmission and the reliability of the system.

[0054] During the laying of overhead lines, based on factors such as transmission distance, climate conditions and terrain, weather-resistant conductor materials such as aluminum-clad steel core aluminum stranded wire are selected to enhance the tensile strength and corrosion resistance of the lines. A reasonable separation distance is set between double-circuit lines to prevent short circuits and mutual interference. In addition, grounding and lightning protection devices are set at appropriate locations on long-distance transmission lines to ensure that the lines have stable transmission capacity and high safety in complex environments.

[0055] In a specific embodiment, the AC-AC converter in the low-frequency grid-connected module is used to convert low-frequency electric energy into electric energy suitable for the industrial frequency main power grid.

[0056] Among them, the AC-AC inverter of the low-frequency grid-connected module realizes the smooth conversion of low-frequency power to industrial frequency power through advanced power electronic conversion technology. The AC-AC inverter first receives the low-frequency AC power from the low-frequency power transmission system, and converts it into a DC intermediate link through the input rectification and filtering module to suppress fluctuations. Subsequently, the DC power is converted into 50Hz or 60Hz industrial frequency AC power through the inverter module to ensure that the output power frequency is consistent with the main power grid standard.

[0057] Preferably, to ensure the quality of power during the conversion process, the AC-AC inverter is equipped with a high-precision current controller and PWM (pulse width modulation) technology to achieve fine adjustment of the output current and voltage and reduce harmonic interference. In addition, the built-in automatic protection system of the AC-AC inverter can detect abnormal conditions such as overcurrent and overvoltage in real time to ensure the safety and stability of power conversion, so that the module can reliably send low-frequency new energy power into the industrial frequency main power grid to meet the grid connection requirements.

[0058] In a specific embodiment, the power frequency circuit breaker is used to quickly disconnect from the main power grid in the event of a fault.

[0059] When the system detects a sudden current surge or voltage anomaly, such as an instantaneous current over-high or voltage over-limit caused by external environment or equipment failure, the high-speed response trigger device of the circuit breaker will automatically start to ensure that the connection is cut off within milliseconds to prevent the abnormal situation from spreading to the main power grid. At the same time, the circuit breaker has an intelligent reclosing function, which can automatically restore the connection after the fault is eliminated and safety is confirmed, reducing the need for manual intervention, improving the automation and recovery speed of the system, and ensuring the smoothness of the grid connection process and the reliable operation of the main power grid.

[0060] In order to further illustrate the present solution, the present application also provides a specific application example of the onshore low-frequency new energy collection and transmission method using the above-mentioned onshore low-frequency new energy collection and transmission device, such as Figure 2 As shown, it specifically includes the following contents:

[0061] The onshore low-frequency renewable energy collection and transmission system receives 50Hz industrial frequency current from the power grid, converts it into 20Hz low-frequency current through the AC exchange station, and transmits the low-frequency current after the AC exchange station to the low-frequency collection switch station through the low-frequency line (L2). The low-frequency current output from the low-frequency collection switch station is distributed to each renewable energy station through multiple transmission lines (L3). At the entrance of each station, corresponding transformers (T1, T2, T3) are set up to adjust the voltage to ensure that it matches the voltage requirements of the station's power generation equipment.

[0062] exist Figure 2 In the system, two wind farms (Wind Farm 1 and Wind Farm 2) and a photovoltaic farm (PV Farm 1) are connected. Each farm uses its own renewable energy (wind or solar) to generate electricity, and converts the generated DC power into AC power through an inverter, thereby connecting to the low-frequency collection system. Ultimately, the entire system achieves efficient collection and long-distance transmission of dispersed wind and photovoltaic power generation through low-frequency collection switch stations and low-frequency lines, providing a reliable solution for long-distance new energy transmission.

[0063] In order to collect and transmit large-scale onshore renewable energy over long distances, promote the consumption of renewable energy, and improve grid efficiency, this application provides an embodiment of an onshore low-frequency renewable energy collection and transmission method, see Figure 3 The onshore low-frequency new energy collection and transmission method specifically includes the following contents:

[0064] Step S101: The low-frequency new energy power generation module generates low-frequency electric energy based on the electric energy generated by the wind power station and the photovoltaic power station, which is received by the respective low-frequency booster stations and the voltage is adjusted to a level suitable for collection;

[0065] Step S102: The low-frequency boosting station uses a transformer unit to boost the low-frequency electric energy of wind power and photovoltaic power to a predetermined collection voltage level;

[0066] Step S103: The low-frequency aggregation module collects and distributes the electric energy from different low-frequency booster stations, and uses the flow control device of the aggregation switch station to monitor and adjust the flow of electric energy, so as to collect and distribute the electric energy of multiple new energy power generation stations;

[0067] Step S104: the low-frequency power transmission system transmits the collected low-frequency electric energy to the low-frequency grid-connected module over a long distance through a single-circuit or double-circuit low-frequency overhead line, so as to transmit the collected low-frequency electric energy over a long distance;

[0068] Step S105: the low-frequency grid-connected module converts the low-frequency electric energy into electric energy suitable for the industrial frequency main grid, and transmits it to the main grid through the industrial frequency circuit breaker.

[0069] The low-frequency new energy power generation module (such as wind farms and photovoltaic power stations) of the present application generates low-frequency electric energy. In order to meet the needs of long-distance transmission, the generated low-frequency electric energy is boosted by a low-frequency booster station to a predetermined collection voltage level to reduce losses during transmission.

[0070] Next, the electric energy from different new energy stations is collected, and the access status of each station is flexibly adjusted according to the power demand and power flow distribution to optimize the distribution of electric energy. Subsequently, the collected low-frequency electric energy is transmitted over long distances through the low-frequency transmission system, and low-loss power transmission is achieved using low-frequency lines, effectively reducing energy losses in long-distance transmission.

[0071] Finally, the low-frequency electric energy reaches the low-frequency grid-connected module, and the AC-AC inverter converts the low-frequency electric energy into industrial frequency electric energy suitable for the main grid. The converted electric energy is connected to the main grid through the industrial frequency circuit breaker to ensure that it can be quickly disconnected in the event of a fault, ensuring the stability and safety of the grid.

[0072] From the above description, it can be seen that the onshore low-frequency renewable energy collection and transmission method provided in the embodiment of the present application can collect and transmit large-scale onshore renewable energy over long distances, promote the consumption of renewable energy, and improve the efficiency of the power grid.

[0073] From the hardware level, in order to enable large-scale land-based new energy to be collected and transmitted over long distances, promote new energy consumption, and improve power grid efficiency, the present application provides an embodiment of an electronic device for implementing all or part of the contents of the land-based low-frequency new energy collection and transmission method, and the electronic device specifically includes the following contents:

[0074] Processor, memory, communication interface and bus; wherein the processor, memory and communication interface communicate with each other through the bus; the communication interface is used to realize information transmission between the onshore low-frequency new energy collection and transmission device and the core business system, user terminal and related database and other related equipment; the logic controller can be a desktop computer, a tablet computer and a mobile terminal, etc., and the present embodiment is not limited thereto. In the present embodiment, the logic controller can be implemented with reference to the embodiment of the onshore low-frequency new energy collection and transmission method and the embodiment of the onshore low-frequency new energy collection and transmission device in the embodiment, and the contents thereof are incorporated herein, and the repeated parts are not repeated.

[0075] It is understandable that the user terminal may include a smart phone, a tablet electronic device, a network set-top box, a portable computer, a desktop computer, a personal digital assistant (PDA), a vehicle-mounted device, a smart wearable device, etc. Among them, the smart wearable device may include smart glasses, a smart watch, a smart bracelet, etc.

[0076] In practical applications, part of the land-based low-frequency new energy collection and delivery method can be executed on the electronic device side as described above, or all operations can be completed in the client device. The specific selection can be based on the processing capability of the client device and the limitations of the user's usage scenario. This application does not limit this. If all operations are completed in the client device, the client device may also include a processor.

[0077] The client device may have a communication module (i.e., a communication unit) that can communicate with a remote server to achieve data transmission with the server. The server may include a server on the task scheduling center side, and other implementation scenarios may also include a server on an intermediate platform, such as a server on a third-party server platform that has a communication link with the task scheduling center server. The server may include a single computer device, or a server cluster consisting of multiple servers, or a server structure of a distributed device.

[0078] Figure 4 FIG. 9 is a schematic block diagram of the system structure of the electronic device 9600 according to an embodiment of the present application. Figure 4 As shown, the electronic device 9600 may include a central processor 9100 and a memory 9140; the memory 9140 is coupled to the central processor 9100. It is worth noting that Figure 4 is exemplary; other types of structures may also be used to supplement or replace this structure to implement telecommunication functions or other functions.

[0079] In one embodiment, the function of the land-based low-frequency new energy collection and transmission method can be integrated into the central processor 9100. The central processor 9100 can be configured to perform the following control:

[0080] Step S101: The low-frequency new energy power generation module generates low-frequency electric energy based on the electric energy generated by the wind power station and the photovoltaic power station, which is received by the respective low-frequency booster stations and the voltage is adjusted to a level suitable for collection;

[0081] Step S102: The low-frequency boosting station uses a transformer unit to boost the low-frequency electric energy of wind power and photovoltaic power to a predetermined collection voltage level;

[0082] Step S103: The low-frequency aggregation module collects and distributes the electric energy from different low-frequency booster stations, and uses the flow control device of the aggregation switch station to monitor and adjust the flow of electric energy, so as to collect and distribute the electric energy of multiple new energy power generation stations;

[0083] Step S104: the low-frequency power transmission system transmits the collected low-frequency electric energy to the low-frequency grid-connected module over a long distance through a single-circuit or double-circuit low-frequency overhead line, so as to transmit the collected low-frequency electric energy over a long distance;

[0084] Step S105: the low-frequency grid-connected module converts the low-frequency electric energy into electric energy suitable for the industrial frequency main grid, and transmits it to the main grid through the industrial frequency circuit breaker.

[0085] From the above description, it can be seen that the electronic equipment provided in the embodiment of the present application can collect and transmit large-scale land-based new energy over long distances, promote the consumption of new energy, and improve the efficiency of the power grid.

[0086] In another embodiment, the onshore low-frequency new energy gathering and transmission device can be configured separately from the central processor 9100. For example, the onshore low-frequency new energy gathering and transmission device can be configured as a chip connected to the central processor 9100, and the onshore low-frequency new energy gathering and transmission method function can be realized through the control of the central processor.

[0087] like Figure 4 As shown, the electronic device 9600 may also include: a communication module 9110, an input unit 9120, an audio processor 9130, a display 9160, and a power supply 9170. It is worth noting that the electronic device 9600 does not necessarily have to include Figure 4 In addition, the electronic device 9600 may also include Figure 4 For components not shown, reference may be made to the prior art.

[0088] like Figure 4 As shown, the central processing unit 9100 is sometimes also referred to as a controller or an operation control, and may include a microprocessor or other processor device and / or logic device. The central processing unit 9100 receives input and controls the operation of various components of the electronic device 9600.

[0089] The memory 9140 may be, for example, one or more of a cache, a flash memory, a hard drive, a removable medium, a volatile memory, a non-volatile memory or other suitable devices. The above-mentioned information related to the failure may be stored, and a program for executing the relevant information may also be stored. The CPU 9100 may execute the program stored in the memory 9140 to implement information storage or processing, etc.

[0090] The input unit 9120 provides input to the central processing unit 9100. The input unit 9120 is, for example, a key or a touch input device. The power supply 9170 is used to provide power to the electronic device 9600. The display 9160 is used to display display objects such as images and texts. The display may be, for example, an LCD display, but is not limited thereto.

[0091] The memory 9140 may be a solid-state memory, such as a read-only memory (ROM), a random access memory (RAM), a SIM card, etc. It may also be a memory that saves information even when the power is off, can be selectively erased, and is provided with more data, examples of which are sometimes referred to as EPROMs, etc. The memory 9140 may also be some other type of device. The memory 9140 includes a buffer memory 9141 (sometimes referred to as a buffer). The memory 9140 may include an application / function storage unit 9142, which is used to store application programs and function programs or processes for executing the operation of the electronic device 9600 through the central processor 9100.

[0092] The memory 9140 may also include a data storage unit 9143 for storing data, such as contacts, digital data, pictures, sounds, and / or any other data used by the electronic device. The driver storage unit 9144 of the memory 9140 may include various drivers for communication functions of the electronic device and / or for executing other functions of the electronic device (such as messaging applications, address book applications, etc.).

[0093] The communication module 9110 is a transmitter / receiver that sends and receives signals via the antenna 9111. The communication module (transmitter / receiver) 9110 is coupled to the central processor 9100 to provide input signals and receive output signals, which may be the same as the case of a conventional mobile communication terminal.

[0094] Based on different communication technologies, multiple communication modules may be provided in the same electronic device, such as a cellular network module, a Bluetooth module and / or a wireless LAN module, etc. The communication module (transmitter / receiver) 9110 is also coupled to a speaker 9131 and a microphone 9132 via an audio processor 9130 to provide an audio output via the speaker 9131 and receive an audio input from the microphone 9132, thereby realizing a common telecommunication function. The audio processor 9130 may include any suitable buffer, decoder, amplifier, etc. In addition, the audio processor 9130 is also coupled to the central processor 9100, so that recording can be performed on the local machine through the microphone 9132, and the sound stored on the local machine can be played through the speaker 9131.

[0095] The embodiments of the present application also provide a computer-readable storage medium capable of implementing all the steps of the onshore low-frequency renewable energy collection and transmission method in the above-mentioned embodiments, where the execution subject is a server or a client. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, all the steps of the onshore low-frequency renewable energy collection and transmission method in the above-mentioned embodiments are implemented. For example, when the processor executes the computer program, the following steps are implemented:

[0096] Step S101: The low-frequency new energy power generation module generates low-frequency electric energy based on the electric energy generated by the wind power station and the photovoltaic power station, which is received by the respective low-frequency booster stations and the voltage is adjusted to a level suitable for collection;

[0097] Step S102: The low-frequency boosting station uses a transformer unit to boost the low-frequency electric energy of wind power and photovoltaic power to a predetermined collection voltage level;

[0098] Step S103: The low-frequency aggregation module collects and distributes the electric energy from different low-frequency booster stations, and uses the flow control device of the aggregation switch station to monitor and adjust the flow of electric energy, so as to collect and distribute the electric energy of multiple new energy power generation stations;

[0099] Step S104: the low-frequency power transmission system transmits the collected low-frequency electric energy to the low-frequency grid-connected module over a long distance through a single-circuit or double-circuit low-frequency overhead line, so as to transmit the collected low-frequency electric energy over a long distance;

[0100] Step S105: the low-frequency grid-connected module converts the low-frequency electric energy into electric energy suitable for the industrial frequency main grid, and transmits it to the main grid through the industrial frequency circuit breaker.

[0101] From the above description, it can be seen that the computer-readable storage medium provided in the embodiment of the present application can collect and transmit large-scale onshore renewable energy over long distances, promote the consumption of renewable energy, and improve the efficiency of the power grid.

[0102] The embodiments of the present application also provide a computer program product capable of implementing all steps of the onshore low-frequency renewable energy collection and transmission method in the above embodiments, where the execution subject is a server or a client. When the computer program / instruction is executed by a processor, the steps of the onshore low-frequency renewable energy collection and transmission method are implemented. For example, the computer program / instruction implements the following steps:

[0103] Step S101: The low-frequency new energy power generation module generates low-frequency electric energy based on the electric energy generated by the wind power station and the photovoltaic power station, which is received by the respective low-frequency booster stations and the voltage is adjusted to a level suitable for collection;

[0104] Step S102: The low-frequency boosting station uses a transformer unit to boost the low-frequency electric energy of wind power and photovoltaic power to a predetermined collection voltage level;

[0105] Step S103: The low-frequency aggregation module collects and distributes the electric energy from different low-frequency booster stations, and uses the flow control device of the aggregation switch station to monitor and adjust the flow of electric energy, so as to collect and distribute the electric energy of multiple new energy power generation stations;

[0106] Step S104: the low-frequency power transmission system transmits the collected low-frequency electric energy to the low-frequency grid-connected module over a long distance through a single-circuit or double-circuit low-frequency overhead line, so as to transmit the collected low-frequency electric energy over a long distance;

[0107] Step S105: the low-frequency grid-connected module converts the low-frequency electric energy into electric energy suitable for the industrial frequency main grid, and transmits it to the main grid through the industrial frequency circuit breaker.

[0108] From the above description, it can be seen that the computer program product provided in the embodiment of the present application can collect and transmit large-scale onshore renewable energy over long distances, promote the consumption of renewable energy, and improve the efficiency of the power grid.

[0109] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0110] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (apparatus), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0111] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0112] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0113] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A land-based low-frequency new energy collection and transmission system, characterized in that: include: A low-frequency new energy power generation module, comprising a plurality of onshore low-frequency new energy power generation stations and a plurality of low-frequency booster stations, wherein the new energy power generation stations include wind power generation stations and photovoltaic power generation stations; A low-frequency collection module, comprising a low-frequency collection switch station, connected to a plurality of low-frequency booster stations of the low-frequency new energy power generation module, for collecting and distributing the dispersed new energy; A low-frequency power transmission system, comprising a single-circuit or double-circuit low-frequency overhead line, connected to the low-frequency collection switch station of the low-frequency collection module, for transmitting the collected new energy over long distances; A low-frequency grid-connected module, comprising a low-frequency transformer, an AC-AC converter and an industrial frequency transformer, connected to the low-frequency overhead line of the low-frequency power transmission system and used for connection to the industrial frequency main power grid; Among them, the low-frequency new energy power generation module is connected to the low-frequency collection switch station of the low-frequency collection module through multiple low-frequency circuit breakers, the low-frequency collection module is connected to the low-frequency overhead line of the low-frequency transmission system through a low-frequency circuit breaker, the low-frequency overhead line in the low-frequency transmission system is connected to the low-frequency transformer in the low-frequency grid-connected module through a low-frequency circuit breaker, and the low-frequency transformer in the low-frequency grid-connected module is connected to the industrial frequency main power grid through an AC-AC converter and an industrial frequency circuit breaker.

2. The onshore low-frequency new energy collection and transmission system according to claim 1 is characterized in that: The low-frequency collection switch station in the low-frequency collection module is used to dynamically put into operation or cut off different new energy stations according to power flow demand.

3. The onshore low-frequency new energy collection and transmission system according to claim 1 is characterized in that: The overhead line in the low-frequency power transmission system is a single-circuit or double-circuit line, which is used to select an appropriate line structure according to the calculation result of the transmission capacity.

4. The onshore low-frequency new energy collection and transmission system according to claim 1 is characterized in that: The AC-AC converter in the low-frequency grid-connected module is used to convert low-frequency electric energy into electric energy suitable for the industrial frequency main power grid.

5. The onshore low-frequency new energy collection and transmission system according to claim 4 is characterized in that: The power frequency circuit breaker is used to quickly disconnect from the main power grid in the event of a fault.

6. A land-based low-frequency new energy collection and transmission method, applied to the land-based low-frequency new energy collection and transmission system according to claim 1, characterized in that: include: The low-frequency new energy power generation module generates low-frequency electric energy based on the electric energy generated by the wind power station and the photovoltaic power station, which is received by the respective low-frequency booster stations and the voltage is adjusted to a level suitable for collection; The low-frequency booster station uses transformer units to boost the low-frequency electricity from wind power and photovoltaic power to a predetermined collection voltage level; The low-frequency aggregation module collects and distributes the electric energy from different low-frequency booster stations, and uses the flow control device of the aggregation switch station to monitor and adjust the flow of electric energy, so as to collect and distribute the electric energy of multiple new energy power generation stations; The low-frequency power transmission system transmits the collected low-frequency electric energy to the low-frequency grid-connected module over long distances through single-circuit or double-circuit low-frequency overhead lines, so as to transmit the collected low-frequency electric energy over long distances; The low-frequency grid-connected module converts low-frequency electrical energy into electrical energy suitable for the industrial frequency main grid and transmits it to the main grid through the industrial frequency circuit breaker.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps of the onshore low-frequency new energy collection and transmission method described in claim 6 are implemented.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the onshore low-frequency new energy collection and transmission method described in claim 6 are implemented.

9. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instructions are executed by a processor, the steps of the onshore low-frequency new energy collection and transmission method described in claim 6 are implemented.

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