Zero-carbon smart park energy system

Abstract

The present invention relates to a zero-carbon smart park energy system, comprising an energy supply module, an energy distribution module and an energy utilization module. The energy supply module comprises a primary energy system and a secondary energy system that satisfy energy consumption requirements of various scenarios in a park, and supplies primary energy and / or secondary energy for the energy utilization module. The energy distribution module comprises a power distribution system, an alternating-current and direct-current apparatus, an energy storage system, a reactive power compensation system and a comprehensive energy management and control system, is connected to the energy supply module and is used for providing a control signal for the energy supply module, so as to distribute the energy to the energy utilization module. The energy utilization module comprises a park lighting system, a central air conditioning system, a conference room system and a charging pile system. The present invention can achieve comprehensive energy management and control for generation, grid, load and storage integration of the park.

Description

A zero-carbon smart park energy system Technical Field

[0001] The present invention relates to the field of park energy internet technology, and in particular to a zero-carbon smart park energy system. Background Art

[0002] The park energy internet is one of the best application scenarios for the coordinated utilization of multiple energy sources and integrated energy services within the context of a low-carbon economy. It holds strategic significance for optimizing and adjusting China's energy structure. Targeting typical concentrated energy consumption areas, such as industrial parks, large public buildings, new towns, and residential communities, building integrated energy systems and improving energy efficiency are key initiatives to promote clean, low-carbon, safe, and efficient energy. Decarbonizing parks is an effective practice in promoting a decarbonized energy supply and economic development model.

[0003] While electricity demand is growing, energy waste is also becoming increasingly severe. Currently, some industrial parks face challenges in comprehensive energy development, including extensive energy supply, a lack of overall planning, complex operating characteristics of new energy sources, outdated system control, and a lack of intelligent networking. Consequently, energy is not being rationally allocated or maximized. To ensure production needs, enterprises urgently need to reform their industrial park power systems and improve their energy supply security and regulation capabilities. Summary of the Invention

[0004] In response to the above problems, the purpose of the present invention is to provide a zero-carbon smart park energy system to achieve integrated energy management and control of the park's source, grid, load and storage.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a zero-carbon smart park energy system, which includes: an energy supply module, an energy distribution module and an energy utilization module; the energy supply module includes a primary energy system and a secondary energy system that meet the energy consumption requirements of various park scenarios, and provides primary energy and / or secondary energy for the energy utilization module; the energy distribution module includes a power distribution system, AC and DC equipment, an energy storage system, a reactive power compensation system and an integrated energy management and control system, which is connected to the energy supply module and is used to provide a control signal to the energy supply module to distribute energy to the energy utilization module; wherein the energy utilization module includes a park lighting system, a central air-conditioning system, a conference room system and a charging pile system.

[0006] Furthermore, the primary energy system includes a distributed energy system, which includes photovoltaic power generation devices, wind power generation devices and / or geothermal power generation devices; the secondary energy system includes a power grid and / or a park power station.

[0007] Furthermore, the photovoltaic power generation device includes photovoltaic modules, photovoltaic inverters, photovoltaic combiner boxes, grid connection systems and photovoltaic control systems;

[0008] The photovoltaic modules are connected to one end of the photovoltaic combiner box via the photovoltaic inverter, and the other end of the photovoltaic combiner box is connected to the grid access system. The grid access system is connected to the photovoltaic control system and is controlled by the photovoltaic control system to access the power grid.

[0009] Furthermore, the photovoltaic power generation device uses building photovoltaic integrated photovoltaic tiles to cover the entire roof.

[0010] Further, the power distribution system includes a primary power distribution system and a secondary power distribution system;

[0011] The primary power distribution system is connected to the primary energy system;

[0012] The secondary distribution system is a relay protection system, and the secondary distribution system is connected to the secondary energy system.

[0013] Furthermore, the energy storage system includes containerized energy storage systems and distributed outdoor cabinet energy storage systems;

[0014] The containerized energy storage system includes battery modules, energy storage battery containers, an integrated inverter-boost system, a grid-connected access system, a secondary power distribution system, a computer monitoring system, and an EMS energy management and control system. The battery modules and energy storage battery containers are connected to the grid-connected access system via the integrated inverter-boost system. The grid-connected access system is connected to the secondary power distribution system, and the grid-connected access system, secondary power distribution system, and EMS energy management and control system are all connected to the computer monitoring system. The EMS energy management and control system is connected to the battery modules and energy storage battery containers, respectively, to control the battery energy storage status.

[0015] The distributed outdoor cabinet energy storage system includes battery modules, a thermal management system, a PCS system, and a local control system; the battery modules and thermal management system are connected to the local control system via the PCS system.

[0016] Furthermore, the integrated energy management and control system exchanges information with the conference room system, central air-conditioning system, charging pile system and campus lighting system.

[0017] Furthermore, the conference room system includes curtain control system, display control system, central air conditioning control system and intelligent lighting control system;

[0018] The central air-conditioning control system exchanges information with the curtain control system, display control system and intelligent lighting control system;

[0019] According to the preset values, the lighting intensity and air-conditioning temperature of the conference room are controlled to achieve intelligent control of equipment in the conference room and energy saving and emission reduction.

[0020] Furthermore, the central air-conditioning system is connected to the central air-conditioning control system, which includes a multi-split centralized control system. The multi-split centralized control system is connected to the integrated energy management and control system through several gateways. The communication protocols supported by the gateway include Modbus protocol and IMMPRO system Bacnet protocol.

[0021] Furthermore, the charging pile system includes AC / DC charging piles, a concentrator, a battery management system and a charging management service platform; the AC / DC charging piles and the concentrator use the CAN bus to exchange data, and the concentrator uses the wired Internet or wireless GPRS network to exchange data with the battery management system and the charging management service platform.

[0022] The present invention has the following advantages due to the adoption of the above technical solution:

[0023] 1. The present invention conducts unified management, control and operation and maintenance of the park's comprehensive energy through the coordinated work of three systems: energy supply, energy distribution and energy use. It is applied to major industrial parks, new towns, smart parks and other scenarios, improving the economic benefits of electricity use in the park. At the same time, it helps to achieve the goals of carbon peak and carbon neutrality, and has good social benefits.

[0024] 2. The technical solution for the zero-carbon smart park of the present invention integrates renewable resources, electrochemical energy storage, distribution network system, intelligent office system and controllable load, and can realize the integrated energy management and control of the park's source, grid, load and storage. It can be applied to various industrial parks, large public buildings, new towns, residential communities and other typical concentrated energy consumption areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. Throughout the drawings, the same reference numerals are used to denote the same components. In the drawings:

[0026] FIG1 is a schematic diagram of a smart park energy network architecture according to an embodiment of the present invention;

[0027] FIG2 is a schematic diagram of the charging pile principle in an embodiment of the present invention;

[0028] FIG3 is a schematic diagram of intelligent control of central air conditioning in an embodiment of the present invention;

[0029] FIG4 is a schematic diagram of the control process of the smart conference room in an embodiment of the present invention.

[0030] Best Mode for Carrying Out the Invention

[0031] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0032] The construction of a zero-carbon smart park is a complex, systematic project that requires incorporating the concept of "carbon neutrality" throughout the park's entire life cycle, including planning, construction, and management. The realization of a zero-carbon smart park is inseparable from the support of various means such as energy conservation, emission reduction, carbon sequestration, and carbon sinks. At the same time, it is necessary to achieve a self-balance between carbon emissions and absorption within the park through low-carbon industrial development, green energy transformation, centralized and shared facilities, circular resource utilization, and intelligent management of carbon elements, so as to achieve a deep integration of production, ecology, and life. The construction of a zero-carbon smart park requires clear goals, vision, and construction ideas, building capacity guarantees for zero-carbon transformation, and relying on key technologies and elements to continuously advance according to effective paths.

[0033] A zero-carbon park is built on the foundation of a smart park fully empowered by digitalization. Digitalization is integrated throughout the entire process of its construction and operation. Digitalization and intelligence are the fundamental characteristics of a zero-carbon park, and therefore a zero-carbon park must be a smart park.

[0034] During the initial construction of a zero-carbon smart park, it is necessary to integrate smart energy and low-carbon development concepts into the entire process of comprehensive planning, construction, and development of the park, and make full use of the Internet of Things and big data technologies in terms of land use and space, energy and construction, resources and environment, transportation, and management to minimize carbon emissions, coordinate the development of the park's economy and ecological environment, and actively innovate the development model of industrial parks.

[0035] At present, some parks' comprehensive energy construction has problems such as extensive energy supply, lack of overall planning, complex operating characteristics of new energy, backward system control, and lack of smart networking. Energy has not been reasonably distributed and utilized to its maximum potential.

[0036] Electricity demand is growing across society, and energy waste is also a serious problem. Recently, the government has implemented power outages for industrial parks and businesses. To ensure production needs, businesses urgently need to reform their power supply systems and improve their energy supply and regulation capabilities.

[0037] In the construction of a zero-carbon smart park, in addition to the low-energy consumption design of the building itself, other approaches are needed to achieve energy conservation, emission reduction, and green low-carbon goals. Therefore, this invention meets the needs of zero-carbon smart park construction from the energy side, solves the rational allocation and management of the comprehensive energy of the zero-carbon park, and provides a solution for building a zero-carbon park.

[0038] As shown in FIG1 , in one embodiment of the present invention, a zero-carbon smart park energy system is provided, which includes three parts: an energy supply module, an energy distribution module, and an energy utilization module.

[0039] The energy supply module includes primary and secondary energy systems that meet the energy consumption needs of various park scenarios and provide primary and / or secondary energy to the energy utilization module;

[0040] The energy distribution module, including the power distribution system, AC and DC equipment, energy storage system, reactive power compensation system and integrated energy management and control system, is connected to the energy supply module to provide control signals to the energy supply module to distribute energy to the energy utilization module.

[0041] Among them, the energy utilization module, including the park lighting system, central air-conditioning system, conference room system and charging pile system, mainly serves as some major infrastructure in the park, energy consumption of industrial production links, and personnel activities in the park.

[0042] In a preferred embodiment, the primary energy system includes a distributed energy system including photovoltaic power generation devices, wind power generation devices, and / or geothermal power generation devices. The secondary energy system includes a power grid and / or a park power station.

[0043] In this embodiment, the photovoltaic power generation device includes photovoltaic modules, a photovoltaic inverter, a photovoltaic combiner box, a grid-connected access system, and a photovoltaic control system. The photovoltaic modules are connected to one end of the photovoltaic combiner box via the photovoltaic inverter, and the other end of the photovoltaic combiner box is connected to the grid-connected access system. The grid-connected access system is connected to the photovoltaic control system, and is controlled by the photovoltaic control system to connect to the power grid. The photovoltaic modules, photovoltaic inverter, photovoltaic combiner box, grid-connected access system, and photovoltaic control system used in this embodiment are all mature existing technologies, so the internal components and principles of each component will not be detailed here.

[0044] Preferably, the park's photovoltaic power generation device uses building integrated photovoltaic (BIPV) photovoltaic tiles (intelligent photovoltaic tile system), which covers the entire roof and has excellent thermal insulation performance, saving internal air-conditioning costs.

[0045] In this embodiment, the primary energy of the park is mostly distributed energy systems, such as solar energy, wind energy, geothermal energy, etc.; secondary energy is electricity, coal, gas, liquefied gas and heat from the power grid or the park power station. The production and supply of these secondary energy sources often involve many equipment and systems within the park. Common ones include various types of power generation equipment, such as diesel generators, photovoltaics, fans, etc., as well as thermal-related boilers, gas turbines, HVAC equipment, etc. The low-carbon level of the energy supply adopted in this embodiment largely determines the effect of carbon management of the entire park and is an important part of achieving low-carbon operations.

[0046] In a preferred embodiment, the power distribution system in the energy distribution module includes a primary power distribution system and a secondary power distribution system. The primary power distribution system is connected to the primary energy system; the secondary power distribution system is a relay protection system, and the secondary power distribution system is connected to the secondary energy system.

[0047] Specifically, in terms of electricity, the distribution system connects the power grid, distributed generation equipment, and power-consuming equipment. The key technologies generally include the primary distribution system, secondary distribution (relay protection) system, AC / DC equipment, energy storage and reactive power compensation systems, integrated energy management and control systems, and related information systems. As the proportion of electricity in industrial parks increases, the stability and resilience of the distribution system determine the lower limit of industrial park energy security and are the fundamental guarantee for industrial park production and life. At the same time, due to the unstable nature of major clean energy supply methods such as photovoltaic and wind power, coupled with the increasing emergence of AC / DC hybrid equipment and systems, the distribution system also bears the task of stabilizing the supply and ensuring power quality.

[0048] In this embodiment, the energy storage system includes a containerized energy storage system and a distributed outdoor cabinet energy storage system; the containerized energy storage system includes a battery module, an energy storage battery container, an inverter-boost integrated system, a grid-connected access system, a secondary power distribution system, a computer monitoring system, and an EMS energy management and control system; the battery module and the energy storage battery container are connected to the grid-connected access system via the inverter-boost integrated system; the grid-connected access system is connected to the secondary power distribution system, and the grid-connected access system, the secondary power distribution system, and the EMS energy management and control system are all connected to the computer monitoring system; the EMS energy management and control system is connected to the battery module and the energy storage battery container, respectively, to control the battery energy storage status.

[0049] The distributed outdoor cabinet energy storage system includes battery modules, a thermal management system, a PCS system, and a local control system; the battery modules and thermal management system are connected to the local control system via the PCS system.

[0050] The park's energy storage battery system matches the appropriate energy storage system based on park load analysis and peak and off-peak electricity price assessments. The energy storage systems include large containerized energy storage systems and distributed outdoor cabinet energy storage systems. Containerized energy storage systems include battery modules, energy storage battery containers, an all-in-one inverter and booster system, a grid connection system, a secondary power distribution system, a computer monitoring system, and an EMS energy management system. Distributed outdoor cabinet energy storage systems include battery modules, a thermal management system, a PCS system, and a local control system.

[0051] In this embodiment, the integrated energy management and control interacts with the conference room system, central air-conditioning system, charging pile system and campus lighting system respectively.

[0052] Central air conditioning systems include chillers, heat pumps, hot and cold water circulation systems, cooling water circulation systems, and terminal air handling equipment. Installed within the campus office buildings, the central air conditioning system provides a comfortable temperature for office areas. Centralized within the air conditioning room, it consists of chillers, heat pumps, hot and cold water circulation systems, cooling water circulation systems, and terminal air handling equipment, such as air handling units and fan coil units.

[0053] The conference room system includes a curtain control system, display control system, central air conditioning control system, and intelligent lighting control system. The central air conditioning control system interacts with the curtain control system, display control system, and intelligent lighting control system within the conference room. By analyzing data and adjusting software presets, it controls the conference room's lighting intensity, air conditioning temperature, and other parameters, achieving intelligent control of conference room equipment and reducing energy consumption.

[0054] The central air conditioning system is connected to the central air conditioning control system, which includes a multi-split centralized control system. This system communicates with the integrated energy management and control system via several gateways. The gateways support Modbus and IMMPRO's Bacnet protocols. The central air conditioning control system also includes energy-saving control software.

[0055] The charging pile system includes AC / DC charging piles, a concentrator, a battery management system (BMS), and a charging management service platform. The AC / DC charging piles and the concentrator exchange data using the CAN bus, while the concentrator, the BMS, and the charging management service platform exchange data using wired Internet or wireless GPRS networks.

[0056] Example: As shown in Figures 1 to 4, the configuration of the zero-carbon smart park in this embodiment includes: a renewable resource photovoltaic power generation system, an electrochemical energy storage power station system, a park charging pile system, a load-side central air-conditioning intelligent management and control system and an intelligent conference room, and a park comprehensive energy management and control system.

[0057] A park's energy system is generally divided into three parts: energy supply, energy distribution, and energy use. Energy supply refers to the energy used to meet the park's energy needs, including renewable resource systems and power grid systems. A commonly used and easily accessible renewable energy source in parks is solar energy, utilizing photovoltaic power generation systems to provide clean energy for the park as an auxiliary power system. Energy distribution refers to the rational allocation of power to the park's distribution system, generally consisting of primary distribution systems, secondary distribution systems, AC / DC equipment, energy storage systems, and integrated energy management and control systems. Clean energy access is inherently unstable, and with the increasing emergence of hybrid AC / DC equipment and systems, the distribution system also bears the responsibility of stabilizing power supply and ensuring power quality. Energy use refers to the park's load-side energy-consuming equipment, which is the primary energy consumer in the park.

[0058] As shown in Figure 1, a typical campus network architecture includes a photovoltaic power generation system, a battery storage system, campus lighting, central air conditioning management, a smart conference room, a charging station system, and an integrated energy management system. The campus photovoltaic power generation system is directly connected to the campus's 400V distribution network using a low-voltage grid connection. This system directly supplies power to loads downstream of the 400V AC busbar, generating electricity for its own use and transferring surplus power to the grid, thus reducing solar curtailment. The capacity of the campus energy storage power station is configured based on actual power load and projected future load growth. Both high-voltage and low-voltage grid connection options are available, with a customized connection solution tailored to specific needs. Campus lighting, charging stations, and central air conditioning are all energy-intensive loads. These loads are integrated into the integrated energy management and control platform, which monitors them through the backend and formulates energy allocation strategies. Renewable energy is prioritized, and peak-shaving and valley-filling strategies are employed to maximize the economic benefits of energy storage in the campus application scenario. Taking advantage of the local peak-valley price differential, peak-valley arbitrage can save the campus electricity costs and generate significant economic benefits. The integrated energy management and control system monitors the photovoltaic power generation, surplus energy storage and load-side electricity consumption in the park, and accesses information from intelligent equipment such as access control and video surveillance to achieve energy visibility, controllability and intelligence, thereby improving management levels.

[0059] As shown in Figure 2, the charging pile system consists of AC / DC charging piles, a concentrator, a battery management system (BMS), and a charging management service platform. The BMS's primary functions are to monitor the battery's operating status (voltage, current, and temperature), predict the power battery's state of charge (SOC) and the corresponding remaining driving range, and manage the battery to prevent overdischarge, overcharging, overheating, and severe voltage imbalances between cells, maximizing battery storage capacity and cycle life. The charging management service platform is also connected to the park's integrated energy management and control platform for unified backend control.

[0060] As shown in Figure 3, the integrated energy management system establishes communication directly with the air conditioner manufacturer's IMMPRO system, selecting a gateway that supports both the Modbus protocol and the IMMPRO system's Bacnet protocol. A certain number of gateways are configured, and the corresponding programs are modified to establish a channel between the air conditioner's system and the integrated energy management system, enabling data monitoring and action instruction adjustment for the air conditioner.

[0061] Figure 4 illustrates one way to implement a smart conference room. The steps are as follows: Information from each conference room node is sent via a serial port to a WiFi controller. This controller, built into the Raspberry Pi system, serves as the data center and transmits this data to the server software via the WiFi module. Similarly, the server software interprets the user's actions and transmits them to the controller. The controller processes the data according to the communication protocol and then transmits the processed instructions to the node to activate the relay.

[0062] This invention aims to improve the economic benefits of electricity consumption and energy management, and builds zero-carbon smart parks in office parks, industrial parks, urban communities, etc. While achieving economic benefits, it can also achieve the goals of carbon peak and carbon neutrality, with good social benefits.

[0063] The zero-carbon smart park of the present invention is applicable to various types of parks and can be used as a technical reference for building zero-carbon demonstration parks.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

[0065] CROSS-REFERENCE TO RELATED APPLICATIONS

[0066] This application claims priority to the Chinese patent application (application number: 202410157221.3) filed on February 4, 2024, the entire contents of which are incorporated herein by reference.

Claims

1. A zero-carbon smart park energy system, characterized by: include: Energy supply module, energy distribution module and energy utilization module; The energy supply module includes primary and secondary energy systems that meet the energy consumption needs of various park scenarios and provide primary and / or secondary energy to the energy utilization module; The energy distribution module, including the power distribution system, AC and DC equipment, energy storage system, reactive power compensation system and integrated energy management and control system, is connected to the energy supply module and is used to provide control signals to the energy supply module to distribute energy to the energy utilization module; Among them, the energy utilization module includes the campus lighting system, central air-conditioning system, conference room system and charging pile system.

2. The zero-carbon smart park energy system according to claim 1 is characterized in that: The primary energy system includes a distributed energy system, which includes photovoltaic power generation devices, wind power generation devices and / or geothermal power generation devices; the secondary energy system includes the power grid and / or park power station.

3. The zero-carbon smart park energy system according to claim 2 is characterized in that: Photovoltaic power generation equipment includes photovoltaic modules, photovoltaic inverters, photovoltaic combiner boxes, grid connection systems and photovoltaic control systems; The photovoltaic modules are connected to one end of the photovoltaic combiner box via the photovoltaic inverter, and the other end of the photovoltaic combiner box is connected to the grid access system. The grid access system is connected to the photovoltaic control system and is controlled by the photovoltaic control system to access the power grid.

4. The zero-carbon smart park energy system according to claim 2 is characterized in that: The photovoltaic power generation device uses building photovoltaic integrated photovoltaic tiles, covering the entire roof.

5. The zero-carbon smart park energy system according to claim 1 is characterized in that: The power distribution system includes the primary distribution system and the secondary distribution system; The primary power distribution system is connected to the primary energy system; The secondary distribution system is a relay protection system, and the secondary distribution system is connected to the secondary energy system.

6. The zero-carbon smart park energy system according to claim 1 is characterized in that: Energy storage systems include containerized energy storage systems and distributed outdoor cabinet energy storage systems; The containerized energy storage system includes battery modules, energy storage battery containers, inverter-boost integrated system, grid connection system, secondary power distribution system, computer monitoring system and EMS energy management and control system; The battery modules and energy storage battery containers are connected to the grid access system via the inverter-boost integrated system; the grid access system is connected to the secondary power distribution system, and the grid access system, secondary power distribution system and EMS energy management and control system are all connected to the computer monitoring system; the EMS energy management and control system is connected to the battery modules and energy storage battery containers respectively to control the battery energy storage status; The distributed outdoor cabinet energy storage system includes battery modules, a thermal management system, a PCS system, and a local control system; the battery modules and thermal management system are connected to the local control system via the PCS system.

7. The zero-carbon smart park energy system according to claim 1 is characterized in that: Integrated energy management and control interacts with the conference room system, central air-conditioning system, charging pile system and campus lighting system.

8. The zero-carbon smart park energy system according to claim 7 is characterized in that: The conference room system includes curtain control system, display control system, central air-conditioning control system and intelligent lighting control system; The central air-conditioning control system exchanges information with the curtain control system, display control system and intelligent lighting control system; According to the preset values, the lighting intensity and air-conditioning temperature of the conference room are controlled to achieve intelligent control of equipment in the conference room and energy saving and emission reduction.

9. The zero-carbon smart park energy system according to claim 8, characterized in that: The central air-conditioning system is connected to the central air-conditioning control system, which includes a multi-split centralized control system. The multi-split centralized control system is connected to the integrated energy management and control system through several gateways. The communication protocols supported by the gateway include Modbus protocol and IMMPRO system Bacnet protocol.

10. The zero-carbon smart park energy system according to claim 7, characterized in that: The charging pile system includes AC / DC charging piles, concentrators, battery management systems and charging management service platforms; the AC / DC charging piles and concentrators use the CAN bus for data exchange, and the concentrators use wired Internet or wireless GPRS networks for data exchange with the battery management system and charging management service platform.

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