Prefabricated cabin and prefabricated substation

Abstract

The invention relates to a prefabricated cabin and a prefabricated substation, and belongs to the technical field of power supply. The prefabricated cabin comprises electric equipment, a new energy power supply system, an energy storage system and an operation control system, wherein the electric equipment is divided into internal electric equipment and external electric equipment. The operation control system is used for predicting energy consumption data of the prefabricated cabin in a future period of time according to the power generation capacity of the new energy power supply system, the current load of sensing equipment in the internal electric equipment and historical energy consumption data of other electric equipment except the sensing equipment in the internal electric equipment; and when the energy consumption data is greater than the current electric quantity of the energy storage system, the prefabricated cabin is controlled, that is, the operation power of the external electric equipment is limited. According to the invention, a power grid is effectively prevented from being used for supplying power, and the zero-carbon or near-zero-carbon requirement is met.

Description

Technical Field

[0001] This invention relates to a prefabricated cabin and a prefabricated substation, belonging to the field of power supply technology. Background Technology

[0002] Prefabricated or prefabricated substations are a type of combined electrical equipment that is manufactured in a factory, including the prefabricated cabin body, internal electrical equipment, and auxiliary equipment. The factory completes the installation, wiring, and commissioning, and the equipment is transported to the construction site either in modules or as a whole. After testing and commissioning, the equipment is put into operation.

[0003] Traditional prefabricated solar panels primarily rely on the power grid for electricity to power internal equipment operation and monitoring, resulting in high carbon emissions and high operating costs. The main issues are: 1. Single-solar-powered prefabricated solar panels suffer from intermittent power supply defects, and the flat roof-mounted power generation cannot adjust its angle to follow the sun, leading to low power generation efficiency; 2. The photovoltaic-energy storage integrated system is not deeply coupled with the prefabricated panel equipment status monitoring; 3. There is a lack of metering for carbon emissions from the operation of prefabricated solar panels; 4. Insufficient intelligence in operation and maintenance management.

[0004] With the low-carbon transformation of the power grid, clean and renewable zero-carbon energy sources such as wind and solar power are developing rapidly and are being used more and more widely in power equipment. Therefore, photovoltaic and wind power generation systems and electrochemical energy storage technologies are being applied to prefabricated cabins. For example, Chinese patent application publication number CN117277922A discloses a wind-solar hybrid power generation and energy storage prefabricated cabin. The power supply system of this scheme includes a wind power generation module and a photovoltaic power generation module that can track the sun. Although it improves the power generation capacity, when wind or sunlight is insufficient, the power supply capacity of the power supply system is still insufficient, and the power grid is still used to power the energy system of the prefabricated cabin, thus failing to meet the requirements of zero-carbon or near-zero-carbon operation. Summary of the Invention

[0005] The purpose of this invention is to provide a prefabricated cabin and a prefabricated substation to solve the problem of how to achieve zero-carbon or near-zero-carbon operation of the prefabricated cabin.

[0006] To achieve the above objectives, the present invention includes:

[0007] The present invention provides a prefabricated cabin, comprising electrical equipment, a new energy power supply system for supplying power to the electrical equipment, an energy storage system for storing the electrical energy generated by the new energy power supply system, and an operation control system. The electrical equipment includes electrical equipment inside the prefabricated cabin and electrical equipment outside the prefabricated cabin, the latter including charging piles. The operation control system is used to predict a first future energy consumption data of the prefabricated cabin within a set time period based on the power generation capacity of the new energy power supply system, the current energy load of the sensing devices in the electrical equipment inside the prefabricated cabin, and the historical energy consumption data of other electrical equipment inside the prefabricated cabin besides the sensing devices, and to limit the operating power of the electrical equipment outside the prefabricated cabin when the first future energy consumption data is greater than the first current energy of the energy storage system.

[0008] Furthermore, the electrical equipment also includes a prefabricated cabin environmental control system; the operation control system is also used to, after limiting the power of the energy-consuming equipment outside the prefabricated cabin, predict the second future energy consumption data of the prefabricated cabin within a set time period based on the power generation capacity of the new energy power supply system, the current energy load of the sensing equipment in the prefabricated cabin, and the historical energy consumption data of other electrical equipment in the prefabricated cabin besides the sensing equipment, and to disconnect the prefabricated cabin environmental control system when the second future energy consumption data is greater than the second current power of the energy storage system.

[0009] Furthermore, the operation control system is also used to connect to the power grid to supply power to the electrical equipment when the sum of the current power generation of the new energy supply system and the third current power of the energy storage system is less than the sum of the current power consumption of the sensing devices in the electrical equipment inside the prefabricated cabin and the current power consumption of other electrical equipment in the electrical equipment inside the prefabricated cabin excluding the sensing devices, after the prefabricated cabin environmental control system is disconnected.

[0010] Furthermore, the electrical equipment also includes a carbon metering device, and the operation control system also includes an inverter that is connected to the new energy supply system, the power grid, and the electrical equipment respectively; a first carbon metering device is connected in series in the link connecting the inverter and the electrical equipment, and a second carbon metering device is connected in series in the link connecting the inverter and the power grid. The operation control system is also used to subtract the second carbon emission value calculated by the second carbon metering device from the first carbon emission value calculated by the first carbon metering device to obtain the actual carbon emission value of the prefabricated cabin.

[0011] Furthermore, the operation control system is also used to send the status information of electrical equipment and the actual carbon emission values ​​to the cloud platform.

[0012] A prefabricated substation includes a prefabricated compartment. The prefabricated compartment includes electrical equipment, a new energy power supply system for supplying power to the electrical equipment, an energy storage system for storing the electrical energy generated by the new energy power supply system, and an operation control system. The electrical equipment includes electrical equipment inside the prefabricated compartment and electrical equipment outside the prefabricated compartment. The electrical equipment outside the prefabricated compartment includes charging piles. The operation control system is used to predict a first future energy consumption data within a set time period of the prefabricated compartment based on the power generation capacity of the new energy power supply system, the current energy load of the sensing devices in the electrical equipment inside the prefabricated compartment, and the historical energy consumption data of other electrical equipment inside the prefabricated compartment besides the sensing devices. It is also used to limit the operating power of the electrical equipment outside the prefabricated compartment when the first future energy consumption data is greater than the first current energy of the energy storage system.

[0013] Furthermore, the electrical equipment also includes a prefabricated cabin environmental control system; the operation control system is also used to, after limiting the power of the energy-consuming equipment outside the prefabricated cabin, predict the second future energy consumption data of the prefabricated cabin within a set time period based on the power generation capacity of the new energy power supply system, the current energy load of the sensing equipment in the prefabricated cabin, and the historical energy consumption data of other electrical equipment in the prefabricated cabin besides the sensing equipment, and to disconnect the prefabricated cabin environmental control system when the second future energy consumption data is greater than the second current power of the energy storage system.

[0014] Furthermore, the operation control system is also used to connect to the power grid to supply power to the electrical equipment when the sum of the current power generation of the new energy supply system and the third current power of the energy storage system is less than the sum of the current power consumption of the sensing devices in the electrical equipment inside the prefabricated cabin and the current power consumption of other electrical equipment in the electrical equipment inside the prefabricated cabin excluding the sensing devices, after the prefabricated cabin environmental control system is disconnected.

[0015] Furthermore, the electrical equipment also includes a carbon metering device, and the operation control system also includes an inverter that is connected to the new energy supply system, the power grid, and the electrical equipment respectively; a first carbon metering device is connected in series in the link connecting the inverter and the electrical equipment, and a second carbon metering device is connected in series in the link connecting the inverter and the power grid. The operation control system is also used to subtract the second carbon emission value calculated by the second carbon metering device from the first carbon emission value calculated by the first carbon metering device to obtain the actual carbon emission value of the prefabricated cabin.

[0016] Furthermore, the operation control system is also used to send the status information of electrical equipment and the actual carbon emission values ​​to the cloud platform.

[0017] The beneficial effects of this invention are as follows: This invention is a pioneering creation. The prefabricated cabin of this invention includes electrical equipment divided into internal and external electrical equipment, a new energy power supply system, an energy storage system, and an operation control system. The operation control system is used to predict the energy consumption data of the prefabricated cabin for a future period of time based on the power generation capacity of the new energy power supply system, the current load of the sensing devices in the internal electrical equipment, and the historical energy consumption data of other electrical equipment in the internal electrical equipment excluding the sensing devices. When the energy consumption data is greater than the current power of the energy storage system, it indicates that there is insufficient power generation and the power of the energy storage system cannot support the future operation of the prefabricated cabin. In the future, when there is insufficient power, the power of the grid will be required for power supply. At this time, the zero-carbon or near-zero-carbon requirements of the prefabricated cabin are not met. Therefore, it is necessary to control the prefabricated cabin, that is, to limit the operating power of the external electrical equipment. This invention effectively avoids the use of the grid for power supply, thus meeting the requirements of zero-carbon or near-zero-carbon operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external shape of a prefabricated cabin according to the present invention;

[0019] Figure 2 This is a schematic diagram of a prefabricated cabin architecture according to the present invention;

[0020] Figure 3 This is a schematic diagram of a system architecture according to the present invention. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] The concept of this invention is to predict the electricity consumption of the prefabricated cabin within a set time period in the future. When the predicted electricity consumption is less than the current power of the energy storage system in the prefabricated cabin, the operating power of the energy-consuming equipment outside the prefabricated cabin is limited. This avoids the situation where the prefabricated cabin uses electricity from the power grid for power supply due to insufficient new energy power generation capacity and insufficient power stored in the energy storage system, thus failing to meet the requirements of zero-carbon or near-zero-carbon operation.

[0023] Prefabricated cabin implementation method:

[0024] This embodiment provides a prefabricated cabin, the applicable prefabricated cabin having the following shape: Figure 1 As shown, it consists of a prefabricated metal structure cabin with built-in insulation material and a prefabricated cabin roof. Its interior can integrate primary and secondary equipment such as switch cabinets, transformers, secondary protection devices, and AC / DC converters. The prefabricated cabin roof integrates photovoltaic panels that can rotate at a certain angle along the top axis and have the ability to track sunlight, as well as low-wind-speed start-up wind power generation devices integrated in the four corners or the middle of the two sides of the top.

[0025] like Figure 2 As shown, the prefabricated cabin includes a new energy supply system, an inverter for AC / DC conversion, an energy storage system for storing clean energy, an operation control system for controlling the operation of the prefabricated cabin, a second carbon meter for calculating carbon emissions caused by the use of electricity from the grid, electrical equipment, and a second carbon meter for calculating the carbon emissions corresponding to the electricity consumption of the electrical equipment. The new energy supply system includes photovoltaic power generation devices (photovoltaic panels) and wind power generation devices. The electrical equipment includes a prefabricated cabin environmental control system, external electrical equipment (external energy-consuming equipment), and internal electrical equipment. The internal electrical equipment includes a multi-source sensing system and an internal power distribution system. The arrows in the figure indicate the direction of electrical energy flow.

[0026] Specifically, the multi-source sensing system for the prefabricated cabin consists of environmental monitoring sensors, fire monitoring sensors, security monitoring sensors, and equipment status monitoring sensors within the prefabricated cabin. The environmental monitoring sensors include sensors for monitoring temperature and humidity, water immersion sensors for monitoring water levels, and noise monitoring sensors. The fire monitoring sensors include smoke detectors for smoke detection and fire detectors for fire detection. The security monitoring sensors include video surveillance systems and cabin access control systems. The equipment status monitoring sensors include sensors for monitoring ultra-high frequency or high frequency partial discharge in primary equipment, temperature sensors for monitoring the internal temperature of equipment and cables, and sensors for monitoring the transformer core.

[0027] The prefabricated cabin environmental control system consists of lighting equipment that provides illumination for the interior of the prefabricated cabin, air conditioning equipment that regulates the internal temperature, ventilation equipment for air exchange, and dehumidification equipment for reducing humidity.

[0028] The external power equipment of the prefabricated cabin consists of charging pile equipment for electric vehicles, external landscape lighting equipment, large display screens for external display, and advertising light box equipment.

[0029] The prefabricated cabin's internal power distribution system consists of a photovoltaic combiner box, energy storage EMS, inverter equipment, secondary protection and control equipment, electricity meters, feeder monitoring terminals, power distribution terminal TTU, carbon meter, reactive power compensation controller, etc.

[0030] When the power generation capacity of the new energy supply system is strong (e.g., strong sunlight or strong winds), the electricity generated by the new energy supply system is sufficient for the use of electrical equipment, and the excess electricity will be stored in the energy storage system. However, when the power generation capacity of the new energy supply system is weak (e.g., at night), the electricity generated by the new energy supply system may not be enough to support the normal operation of all the current electrical equipment, and the clean energy in the energy storage system will be used first to power the electrical equipment.

[0031] When the power generation capacity of the new energy supply system is weak, even with an energy storage system to power the electrical equipment, the energy storage system may still run out of power, leading to the use of grid electricity to power the equipment. However, using grid electricity will not meet the requirements for zero-carbon or near-zero-carbon operation of the prefabricated cabin. Therefore, the operation control system of this invention constructs a dynamic energy consumption prediction model based on the real-time load data of the entire prefabricated cabin, including the new energy supply system and the historical data records of the electrical equipment, collected in real time by a multi-source sensing system. This model accurately generates the first future energy consumption data of the prefabricated cabin for a specified future period. The prediction process is as described in the Chinese patent authorization text with authorization announcement number CN120414651B. Its core idea is to achieve optimized scheduling and intelligent management of the entire energy system of the prefabricated cabin by integrating and analyzing data from the power generation side, grid side, load side, and energy storage side, including accurate prediction of energy supply and demand. For example, based on the current power generation capacity of the new energy supply system, the current load of the prefabricated cabin's multi-source sensing system, and the historical energy consumption data of the prefabricated cabin's internal power distribution system, the first future energy consumption data for a set time period is predicted. If the first future energy consumption data exceeds the first current energy consumption of the energy storage system, the operating power of external energy-consuming equipment is limited, for example, the charging power of charging piles is limited. This reduces the power consumption of the energy-consuming system in advance, thereby avoiding the use of grid power. The prediction of future energy consumption data uses only the current load of the prefabricated cabin's multi-source sensing system and the historical energy consumption data of the prefabricated cabin's internal power distribution system because these two systems correspond to critical equipment for the prefabricated cabin that cannot be powered off, and their corresponding historical energy consumption data is stable and continuous, facilitating prediction. However, the energy consumption data of external energy-consuming equipment and the prefabricated cabin's environmental control system are discontinuous, leading to unstable data and hindering prediction. Even if the predicted data is not the sum of the future energy consumption of all current equipment in the prefabricated cabin, corresponding values ​​can be added based on experience to obtain the final future energy consumption data.

[0032] Specifically, limiting the operating power of external energy-consuming equipment in the prefabricated cabin includes: first, reducing the operating power of external energy-consuming equipment in the prefabricated cabin; after reducing the operating power for a period of time, predicting the future energy consumption data of the prefabricated cabin within a set time period based on the current power generation capacity of the new energy supply system, the current load of the prefabricated cabin's multi-source sensing system, and the historical energy consumption data of the prefabricated cabin's internal power distribution system; and when the future energy consumption data is greater than the current power of the energy storage system, disconnecting the external energy-consuming equipment in the prefabricated cabin.

[0033] Furthermore, after limiting the operating power of external energy-consuming equipment in the prefabricated cabin for a period of time, the second future energy consumption data of the prefabricated cabin is predicted again based on the current power generation capacity of the new energy supply system, the current load of the prefabricated cabin's multi-source sensing system, and the historical energy consumption data of the prefabricated cabin's internal power distribution system. When the second future energy consumption data is greater than the second current power of the energy storage system, the prefabricated cabin environmental control system is disconnected.

[0034] The operation control system of this invention will only connect to the power grid under special circumstances to use the grid's electricity to function the energy-consuming system. Specifically, after the prefabricated cabin environmental control system has been disconnected for a period of time, when the sum of the current power generation of the new energy supply system and the third current power of the energy storage system is less than the sum of the current power consumption of the prefabricated cabin multi-source sensing system and the current power consumption of the prefabricated cabin internal power distribution system, the power grid will be used to supply power to the prefabricated cabin multi-source sensing system and the prefabricated cabin internal power distribution system within the energy-consuming system. However, the electricity used when supplying power through the power grid will cause carbon emissions; therefore, a second carbon emission meter is connected in series in the connection line between the inverter and the power grid. The electrical energy used by the energy system includes electricity generated by the new energy supply system and electricity from the power grid. The carbon emissions corresponding to the electricity generated by the new energy supply system can be regarded as the carbon emissions reduced by the prefabricated cabin. Therefore, a first carbon emission meter is set in series in the connection line between the inverter and the energy system. When it is necessary to count the carbon emissions of the prefabricated cabin, the carbon emission value counted by the first carbon emission meter is subtracted from the carbon emission value counted by the second carbon emission meter to obtain the actual carbon emission value of the prefabricated cabin. This actual carbon emission value reflects whether the prefabricated cabin is a zero-carbon or near-zero-carbon prefabricated cabin.

[0035] like Figure 3 As shown, the intelligent system's operation and control system also collects all status information from the prefabricated cabin's multi-source sensing system, external energy-consuming equipment, environmental control system, and internal power distribution system. This information is used to monitor, process, alarm, and coordinate operations (e.g., activating air conditioning if excessive temperature is detected). The system sends this status data, along with carbon emission values, to a cloud platform and a localized visualization device within the prefabricated cabin. The cloud platform then transmits the information to mobile terminals, allowing maintenance personnel to monitor the prefabricated cabin's operational status and information. Furthermore, by authorizing maintenance personnel, authorized personnel can issue setting and operation commands to the intelligent system via the cloud platform from their mobile terminals, enabling remote control.

[0036] Specifically, the intelligent system can be an industrial control computer, an all-in-one machine, an edge gateway, or a terminal. The intelligent system communicates with the cloud platform via a wireless 5G module or a wired network.

[0037] Implementation methods for prefabricated substations:

[0038] This embodiment provides a prefabricated substation, which includes a prefabricated compartment and various electrical components installed inside the prefabricated compartment. Since the structure of the prefabricated compartment has been described clearly enough in the prefabricated compartment embodiment, it will not be described again here.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific embodiments of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A prefabricated cabin, characterized in that, The system includes electrical equipment, a new energy power supply system for supplying power to the electrical equipment, an energy storage system for storing the electrical energy generated by the new energy power supply system, and an operation control system. The electrical equipment includes electrical equipment inside the prefabricated cabin and electrical equipment outside the prefabricated cabin. The electrical equipment outside the prefabricated cabin includes charging piles. The operation control system is used to predict a first future energy consumption data of the prefabricated cabin within a set time period based on the power generation capacity of the new energy power supply system, the current energy load of the sensing devices in the electrical equipment inside the prefabricated cabin, and the historical energy consumption data of other electrical equipment inside the prefabricated cabin besides the sensing devices. It is also used to limit the operating power of the electrical equipment outside the prefabricated cabin when the first future energy consumption data is greater than the first current energy of the energy storage system.

2. The prefabricated cabin according to claim 1, characterized in that, The electrical equipment also includes a prefabricated cabin environmental control system; the operation control system is also used to, after limiting the power of the energy-consuming equipment outside the prefabricated cabin, predict the second future energy consumption data of the prefabricated cabin within a set time period based on the power generation capacity of the new energy power supply system, the current energy load of the sensing equipment in the prefabricated cabin, and the historical energy consumption data of other electrical equipment in the prefabricated cabin besides the sensing equipment, and to disconnect the prefabricated cabin environmental control system when the second future energy consumption data is greater than the second current power of the energy storage system.

3. The prefabricated cabin according to claim 2, characterized in that, The operation control system is also used to connect to the power grid to supply power to the electrical equipment when the sum of the current power generation of the new energy supply system and the third current power of the energy storage system is less than the sum of the current power consumption of the sensing device in the electrical equipment inside the prefabricated cabin and the current power consumption of other electrical equipment in the electrical equipment inside the prefabricated cabin excluding the sensing device, after disconnecting the prefabricated cabin environmental control system.

4. The prefabricated cabin according to claim 3, characterized in that, The electrical equipment also includes a carbon metering device, and the operation control system also includes an inverter device that is connected to the new energy supply system, the power grid and the electrical equipment respectively; a first carbon metering device is connected in series in the link connecting the inverter device and the electrical equipment, and a second carbon metering device is connected in series in the link connecting the inverter device and the power grid. The operation control system is also used to subtract the second carbon emission value calculated by the second carbon metering device from the first carbon emission value calculated by the first carbon metering device to obtain the actual carbon emission value of the prefabricated cabin.

5. The prefabricated cabin according to claim 4, characterized in that, The operation control system is also used to send the status information of electrical equipment and the actual carbon emission value to the cloud platform.

6. A prefabricated substation, characterized in that, The system includes a prefabricated cabin, which comprises electrical equipment, a new energy power supply system for supplying power to the electrical equipment, an energy storage system for storing the electrical energy generated by the new energy power supply system, and an operation control system. The electrical equipment includes internal and external electrical equipment within the prefabricated cabin, and the external electrical equipment includes charging piles. The operation control system is used to predict a first future energy consumption data for a set time period of the prefabricated cabin based on the power generation capacity of the new energy power supply system, the current energy load of the sensing devices in the internal electrical equipment of the prefabricated cabin, and the historical energy consumption data of other electrical equipment in the internal electrical equipment of the prefabricated cabin besides the sensing devices. It is also used to limit the operating power of the external electrical equipment of the prefabricated cabin when the first future energy consumption data is greater than the first current energy of the energy storage system.

7. The prefabricated substation according to claim 6, characterized in that, The electrical equipment also includes a prefabricated cabin environmental control system; the operation control system is also used to, after limiting the power of the energy-consuming equipment outside the prefabricated cabin, predict the second future energy consumption data of the prefabricated cabin within a set time period based on the power generation capacity of the new energy power supply system, the current energy load of the sensing equipment in the prefabricated cabin, and the historical energy consumption data of other electrical equipment in the prefabricated cabin besides the sensing equipment, and to disconnect the prefabricated cabin environmental control system when the second future energy consumption data is greater than the second current power of the energy storage system.

8. The prefabricated substation according to claim 7, characterized in that, The operation control system is also used to connect to the power grid to supply power to the electrical equipment when the sum of the current power generation of the new energy supply system and the third current power of the energy storage system is less than the sum of the current power consumption of the sensing device in the electrical equipment inside the prefabricated cabin and the current power consumption of other electrical equipment in the electrical equipment inside the prefabricated cabin excluding the sensing device, after disconnecting the prefabricated cabin environmental control system.

9. The prefabricated substation according to claim 8, characterized in that, The electrical equipment also includes a carbon metering device, and the operation control system also includes an inverter device that is connected to the new energy supply system, the power grid and the electrical equipment respectively; a first carbon metering device is connected in series in the link connecting the inverter device and the electrical equipment, and a second carbon metering device is connected in series in the link connecting the inverter device and the power grid. The operation control system is also used to subtract the second carbon emission value calculated by the second carbon metering device from the first carbon emission value calculated by the first carbon metering device to obtain the actual carbon emission value of the prefabricated cabin.

10. The prefabricated substation according to claim 9, characterized in that, The operation control system is also used to send the status information of electrical equipment and the actual carbon emission value to the cloud platform.

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