Integrated Water, Wind, Solar and Energy Storage Multi-Energy Complementary Green and Smart Power Station

Abstract

The present invention provides an integrated water, wind, light and energy storage multi-energy complementary green and intelligent power station, which includes a hydropower project, a wind farm project, a solar power generation project, a compressed air energy storage project, an intelligent monitoring device, a state online monitoring system and a power station intelligent operation and dispatch platform; the wind farm, solar power generation and compressed air energy storage projects make full use of the land acquisition, water source, buildings, roads inside and outside the site, transmission systems, etc. of the hydropower project for layout, and carry out planning, construction, operation and maintenance synchronously to achieve intelligent construction and intelligent operation. The real-time power generation of each power generation project is bundled and sent to the power system or consumed within the power station, and the electricity consumption with insufficient energy storage operation is uniformly input by the power system. It can save land and water resources, save construction and production management costs such as civil engineering and equipment facilities, increase power generation benefits, improve the utilization rate of the transmission system, reduce the impact of wind and light power generation volatility, and reduce the power system reserve, and has broad guiding and popularization significance.

Description

Technical Field

[0001] The present invention belongs to the technical fields of hydropower, wind power, solar power generation, and compressed air energy storage, and particularly relates to an integrated water, wind, light, and storage multi-energy complementary green intelligent power station. Background Art

[0002] At present, the development mode of integrated water, wind, light, and storage multi-energy complementarity is single. Hydropower, wind power, solar power generation, and compressed air energy storage projects belong to different power enterprises, and each conducts the planning, construction, operation, and maintenance of the project separately. It is necessary to separately carry out work such as research and data collection, survey and design, land expropriation and resettlement of immigrants, and implementation of project construction management, construct special buildings (structures), on-site and off-site roads, transmission systems, etc. for the construction project. Moreover, the cleaning of photovoltaic modules and solar thermal mirrors, and the cooling systems of solar thermal power stations and compressed air energy storage projects require a large amount of water, resulting in low utilization rates of various resources and high construction and production management costs for individual projects. The degree of intelligence in engineering safety monitoring is relatively low, resulting in low efficiency and high risks in the operation and management of power stations. At the same time, due to the randomness and intermittency of wind energy and solar energy, the power generation fluctuates greatly. Direct grid connection not only greatly affects the safe and stable operation of the power grid, but also occupies the power space of conventional power sources, causing the units of other power enterprises to operate inefficiently, and there is generally a phenomenon that they have to stop operating when the power grid cannot absorb the power, affecting the power generation efficiency of each power generation project. Summary of the Invention

[0003] Aiming at the defects existing in the prior art, the present invention provides an integrated water, wind, light, and storage multi-energy complementary green intelligent power station, which can effectively solve the above problems.

[0004] The technical solution adopted by the present invention is as follows:

[0005] The present invention provides an integrated water, wind, light, and storage multi-energy complementary green intelligent power station, including a hydropower project, a wind farm project, a solar power generation project, a compressed air energy storage project, an intelligent monitoring device, a status online monitoring system, and a power station intelligent operation and dispatch platform;

[0006] The wind farm project, the solar power generation project, and the compressed air energy storage project make full use of the land expropriation, water source, buildings, structures, on-site and off-site roads, and transmission system layout of the hydropower project, and are planned, constructed, and operated and maintained synchronously with the hydropower project to achieve intelligent construction and intelligent operation;

[0007] For the hydropower project, the wind farm project, the solar power generation project, and the compressed air energy storage project, the intelligent monitoring devices are installed for all buildings, structures, equipment and facilities, and their corresponding foundations and slopes; the state online monitoring systems are also respectively installed for the power generation equipment and energy storage equipment of each power generation project; all the intelligent monitoring devices and the state online monitoring systems are intelligently connected to the intelligent operation and dispatching platform of the power station;

[0008] The real-time power generation of the power generation equipment of each power generation project is bundled and sent to the power system according to dispatching needs, or consumed by the energy storage equipment in the power station; if the energy storage equipment still cannot meet the electricity consumption required for the operation of the energy storage equipment after full consumption, it will be uniformly input by the power system.

[0009] Preferably, the hydropower project can be a conventional hydropower station, a pumped-storage power station, or a hybrid pumped-storage power station; the solar power generation project can be a photovoltaic power generation project and / or a solar thermal power station.

[0010] Preferably, for the wind turbine foundations, unit step-up power distribution device foundations, and step-up substations of the wind farm project, the photovoltaic modules, busbar boxes, inverters, and step-up transformers of the photovoltaic power generation project, the concentrating solar collection system, heat storage system, steam generation system, thermal system, water treatment system, and water supply system of the solar thermal power station, and the compressed energy storage system, heat storage and heat exchange system, gas storage system, expansion and energy release system, and other auxiliary systems of the compressed air energy storage project, make full use of the land acquisition, water source, building and structure layout of the hydropower project, share the on-site and off-site roads and transmission systems with the hydropower project, and carry out planning, construction, operation and maintenance synchronously.

[0011] Preferably, the power generation equipment of each power generation project includes: the generator sets of the hydropower project, the wind turbines of the wind farm project, the power generation equipment of the solar power generation project, and the expander-matched generators of the compressed air energy storage project;

[0012] The energy storage equipment of each power generation project includes: the energy storage units of the hydropower project and the compressor-matched motors of the compressed air energy storage project.

[0013] Preferably, the generator sets of the hydropower project include the water turbine generator sets of the conventional hydropower station and the hybrid pumped-storage power station, and the reversible pump-turbine - generator motor sets in the power generation mode of the pumped-storage power station and the hybrid pumped-storage power station; the power generation equipment of the solar power generation project includes the photovoltaic modules of the photovoltaic power generation project and the steam turbine generator sets of the solar thermal power station;

[0014] The energy storage unit of the hydropower project includes the reversible pump-turbine-generator unit in the pumping mode of the pumped-storage power station and the hybrid pumped-storage power station.

[0015] Preferably, the intelligent operation and dispatch platform of the power station can comprehensively consider the power system demand and the power station's consumption capacity, intelligently analyze and determine the optimal operation mode of the power station, and automatically control the opening and closing of each power generation device and the energy storage device of each power generation project:

[0016] When the electricity demand of the power system is greater than or equal to the total real-time power generation of the power generation devices, all the power generation devices are turned on, and all the energy storage devices are turned off;

[0017] When the electricity demand of the power system is less than the total real-time power generation of the power generation devices or the power system only has a power supply demand, the intelligent operation and dispatch platform of the power station intelligently analyzes and determines the opening and closing sequence and operation scale of the power generation devices and the energy storage devices. As the electricity demand of the power system decreases or the power supply demand increases, it automatically gradually closes each power generation device until all are closed, and automatically gradually turns on each energy storage device until all are turned on.

[0018] Preferably, the regulation method of the intelligent operation and dispatch platform of the power station for each power generation device of each power generation project is as follows:

[0019] When the electricity demand of the power system is continuously increasing, the intelligent operation and dispatch platform of the power station can automatically analyze, first exclude the power generation devices that are in the maintenance state and cannot be turned on, and then automatically judge according to the following regulation steps and sequentially turn on the remaining power generation devices:

[0020] S1. When the reservoir of the conventional hydropower station or the hybrid pumped-storage power station is in the flood season or needs to empty the flood control storage capacity for operation with reduced water level, turn on the water turbine generator set of the conventional hydropower station or the hybrid pumped-storage power station;

[0021] S2. When the reservoir of the conventional hydropower station or the hybrid pumped-storage power station is in the non-flood season, the intelligent operation and dispatch platform of the power station calculates the real-time power generation profit per degree of each power station according to the pre-established correlation between the reservoir water level of the hydropower project, the wind speed and direction of the wind farm project, and the solar radiation and power generation of the solar power generation project, and controls the water turbine generator set of the conventional hydropower station or the hybrid pumped-storage power station, as well as the wind turbines of the wind farm project, the photovoltaic modules of the photovoltaic power generation project, and the steam turbine generator set of the solar thermal power station, and turns them on in the order of decreasing power generation profit;

[0022] Among them, the power generation profit = power generation sales revenue - power generation cost - sales tax

[0023] Power generation cost = power station operating cost + tax + management cost + financial cost;

[0024] S3, starting the reversible pump turbine-generator motor unit in the power generation mode of the pumped storage power station or the hybrid pumped storage power station;

[0025] S4, starting the expander supporting generator of the compressed air energy storage project;

[0026] As each power generation equipment is turned on in sequence, the power supply continues to increase; when the electricity demand of the power system continues to decrease, the power station intelligent operation and dispatching platform automatically shuts down the corresponding power generation equipment in the order of the control steps from S4 to S1 above; but when the power generation of the corresponding power generation equipment in S2 exceeds the electricity demand of the power system and the pumped-storage power station or the hybrid pumped-storage power station and the compressed air energy storage project can absorb it, the corresponding power generation equipment continues to be turned on.

[0027] Preferably, the power station intelligent operation and dispatching platform regulates each of the energy storage devices of each power generation project in the following manner:

[0028] When the power consumption required by the power system continues to decrease, the power station intelligent operation and dispatching platform can automatically analyze and first exclude the energy storage equipment that is under maintenance and cannot be turned on, and then automatically judge and turn on the remaining energy storage equipment in sequence according to the following control steps:

[0029] S1, starting the reversible pump-turbine-generator motor unit in the pumping mode of the pumped-storage power station or the hybrid pumped-storage power station;

[0030] S2, turning on the motor supporting the compressor of the compressed air energy storage project.

[0031] Preferably, it also includes:

[0032] The externally transmitted power of each of the power generation equipment is bundled and uniformly transmitted from the transmission system of the power station; the power generation of each of the power generation equipment that exceeds the demand of the power system is absorbed by each of the energy storage equipment in the power station. If the power consumption required for the operation of the energy storage equipment is still not met after all the power is absorbed, it will be uniformly input by the power system;

[0033] The power station intelligent operation and dispatching platform intelligently analyzes and determines the maintenance period of one or more projects in the power station according to the operation and equipment and facility conditions of the hydropower project, the wind farm project, the solar power generation project and the compressed air energy storage project, combined with the water, wind and solar energy resources in the project area and the demand of the power system;

[0034] The water for cleaning the photovoltaic modules of the photovoltaic power generation project and the mirrors of the solar thermal power station, as well as the cooling water for the solar thermal power station and the compressed air energy storage project, are all taken from the water source of the hydropower project.

[0035] The integrated multi-energy complementary green and intelligent power station provided by the present invention has the following advantages:

[0036] The integrated development of the integrated multi-energy complementary green and intelligent power station enables the wind farm, solar power generation, and compressed air energy storage project to make full use of the land acquisition, water source, buildings (structures), on-site and off-site roads, transmission systems, etc. of the hydropower project for layout, and carry out synchronous planning, construction, operation and maintenance. It unifies the work of conducting research and collecting data, survey and design, and performing project construction management, etc. There is no need to separately acquire land or find another water source, saving land and water resources, avoiding the resettlement problem of the wind-solar-storage project, and saving the construction and production management costs of civil engineering, equipment and facilities, etc. shared with the hydropower project. At the same time, through intelligent construction and intelligent operation, it realizes the real-time switching of power transmission and energy storage in the power station according to the grid demand, can greatly increase the power generation efficiency, and makes full use of the fast regulation ability of hydropower units to bundle and transmit the wind-solar-storage power generation and hydropower unit power together, improving the utilization rate of the transmission system, reducing the impact of the volatility of wind-solar power generation, reducing the standby of the power system, and facilitating the construction of a resource-saving clean, low-carbon, safe and efficient energy system, which has broad guiding and popularizing significance. Detailed implementation manners

[0037] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] The purpose of the present invention is to provide an integrated multi-energy complementary green and intelligent power station for water, wind, light and storage. The wind power generation, solar power generation and compressed air energy storage project make full use of the land acquisition, water source, buildings (structures), on-site and off-site roads, transmission systems, etc. of the hydropower project for layout, and carry out synchronous planning, construction, operation and maintenance. Through intelligent construction and intelligent operation, it solves the problems of land acquisition, water source, construction management, etc. of each power generation project, and greatly reduces the overall construction and production management costs; at the same time, it realizes the bundled transmission of combined power and the real-time switching of energy storage in the power station, improves the power generation and the utilization rate of the transmission system, reduces the impact of the volatility of wind-solar power generation on the safe and stable operation of the power grid, and reduces technical problems such as the standby of the power system.

[0039] The present invention provides an integrated multi-energy complementary green and intelligent power station for water, wind, light and storage, including a hydropower project, a wind farm project, a solar power generation project, a compressed air energy storage project, an intelligent monitoring device, a status online monitoring system and a power station intelligent operation and dispatching platform;

[0040] The wind farm project, the solar power generation project, and the compressed air energy storage project make full use of the land acquisition, water source, buildings, structures, on-site and off-site roads, and transmission systems of the hydropower project, and are planned, constructed, and operated and maintained synchronously with the hydropower project to achieve intelligent construction and smart operation;

[0041] For the hydropower project, the wind farm project, the solar power generation project, and the compressed air energy storage project, intelligent monitoring devices are installed for all buildings, structures, equipment and facilities, and their corresponding foundations and slopes, etc.; state online monitoring systems are also installed respectively for the power generation equipment and energy storage equipment of each power generation project; all the intelligent monitoring devices and the state online monitoring systems are intelligently connected to the intelligent operation and dispatching platform of the power station;

[0042] The real-time power generation of the power generation equipment of each power generation project is bundled and sent to the power system according to dispatching needs, or consumed by the energy storage equipment in the power station; if the energy storage equipment still cannot meet the power consumption required for the operation of the energy storage equipment after full consumption, it will be uniformly input by the power system.

[0043] In the present invention, the hydropower project can be a conventional hydropower station, a pumped-storage power station, or a hybrid pumped-storage power station.

[0044] The solar power generation project can be a photovoltaic power generation project, a solar thermal power station, or both a photovoltaic power generation project and a solar thermal power station.

[0045] For the wind turbine foundations, unit step-up power distribution device foundations, step-up substations, etc. of the wind farm project, the photovoltaic modules, busbar boxes, inverters, step-up transformers, etc. of the photovoltaic power generation project, the concentrating solar collector system, heat storage system, steam generation system, thermal system, water treatment system, water supply system, etc. of the solar thermal power station, the compressed energy storage system, heat storage and heat exchange system, gas storage system, expansion and energy release system, other auxiliary systems, etc. of the compressed air energy storage project, make full use of the land acquisition, water source, buildings (structures), etc. of the hydropower project for layout, share the on-site and off-site roads and transmission systems, and overall consider the construction organization design and carry out planning, construction, and operation and maintenance synchronously. The engineering grades, building levels, floods, earthquake resistance, environmental protection and soil and water conservation, occupational health, and safety emergency design standards of the shared parts are determined according to the highest standards of the involved projects, and the construction scale meets the shared requirements.

[0046] The power generation equipment of each power generation project includes: the generator sets of the hydropower project, the wind turbines of the wind farm project, the power generation equipment of the solar power generation project, and the expander supporting generators of the compressed air energy storage project; among them: the generator sets of the hydropower project include the water turbine generator sets of the conventional hydropower station and the hybrid pumped storage power station, and the reversible pump-turbine - generator motor sets in the power generation mode of the pumped storage power station and the hybrid pumped storage power station; the power generation equipment of the solar power generation project includes the photovoltaic modules of the photovoltaic power generation project and the steam turbine generator sets of the solar thermal power station.

[0047] The energy storage equipment of each power generation project includes: the energy storage units of the hydropower project and the compressor supporting motors of the compressed air energy storage project; among them: the energy storage units of the hydropower project include the reversible pump-turbine - generator motor sets in the pumping mode of the pumped storage power station and the hybrid pumped storage power station.

[0048] The intelligent operation and dispatch platform of the power station can comprehensively consider the power system demand and the power station consumption capacity, follow the principle of minimizing the operation cost and maximizing the benefit of the power station, intelligently analyze and determine the optimal operation mode of the power station, and automatically control the opening and closing of each power generation equipment and the energy storage equipment of each power generation project:

[0049] Specifically, when the power consumption demand of the power system is greater than or equal to the total real-time power generation of the power generation equipment, all the power generation equipment is turned on and all the energy storage equipment is turned off; when the power consumption demand of the power system is less than the total real-time power generation of the power generation equipment or the power system only has a power supply demand, the intelligent operation and dispatch platform of the power station intelligently analyzes and determines the opening and closing sequence and operation scale of the power generation equipment and the energy storage equipment, and as the power consumption demand of the power system decreases or the power supply demand increases, it automatically gradually closes each power generation equipment until all are closed, and automatically gradually turns on each energy storage equipment until all are turned on.

[0050] As a specific method, under a certain working condition, the regulation and control method of the intelligent operation and dispatch platform of the power station for each power generation equipment of each power generation project is:

[0051] When the power consumption demand of the power system is continuously increasing, the intelligent operation and dispatch platform of the power station can automatically analyze, first exclude the power generation equipment that is in the maintenance state and cannot be turned on, and then automatically judge according to the following regulation and control steps and sequentially turn on the remaining power generation equipment:

[0052] S1, when the reservoir of the conventional hydropower station or the hybrid pumped storage power station is in the flood season or needs to empty the flood control storage capacity and operate with a lowered water level, turn on the water turbine generator sets of the conventional hydropower station or the hybrid pumped storage power station;

[0053] S2. When the reservoir of the conventional hydropower station or the hybrid pumped - storage power station is in the non - flood period, the intelligent operation and dispatching platform of the power station calculates the real - time power generation profit per degree of each power station according to the established correlation between key parameters such as the reservoir water level of the hydropower project, the wind speed and direction of the wind farm project, and the solar radiation of the solar power generation project and the power generation amount, and controls the water turbine generator sets of the conventional hydropower station or the hybrid pumped - storage power station, as well as the wind turbine generator sets of the wind farm project, the photovoltaic modules of the photovoltaic power generation project, and the steam turbine generator sets of the solar thermal power station, and turns them on in the order from high to low power generation profit.

[0054] Among them, the power generation profit = power generation sales revenue - power generation cost - sales tax

[0055] The power generation cost = power station operating cost (including maintenance cost + material cost + labor cost + rental cost + water source cost + reservoir area funds + depreciation cost + other costs) + tax + management cost + financial cost;

[0056] S3. Turn on the reversible pump - turbine - generator set in the power generation mode of the pumped - storage power station or the hybrid pumped - storage power station.

[0057] S4. Turn on the generator supporting the expander of the compressed air energy storage project.

[0058] As each power generation equipment is turned on in sequence, the power supply continuously increases; when the power consumption demand of the power system continuously decreases, the intelligent operation and dispatching platform of the power station automatically shuts down the corresponding power generation equipment according to the regulation steps sequence of S4 to S1 above. However, when the power generation amount of the corresponding power generation equipment in S2 exceeds the power consumption demand of the power system while the pumped - storage power station or the hybrid pumped - storage power station and the compressed air energy storage project can absorb it, the corresponding power generation equipment continues to be turned on.

[0059] In another working condition, the regulation method of the intelligent operation and dispatching platform of the power station for each energy storage equipment of each power generation project is as follows:

[0060] When the power consumption amount required by the power system continuously decreases, the intelligent operation and dispatching platform of the power station can automatically analyze, first exclude the energy storage equipment that cannot be turned on due to being in the maintenance state, and then automatically judge according to the following regulation steps and turn on the remaining energy storage equipment in sequence:

[0061] S1. Turn on the reversible pump - turbine - generator set in the pumping mode of the pumped - storage power station or the hybrid pumped - storage power station.

[0062] S2. Turn on the motor supporting the compressor of the compressed air energy storage project.

[0063] The power generated by each of the power generation devices is bundled and jointly sent out from the power station's transmission system in a unified manner; the power generated by each of the power generation devices that exceeds the demand of the power system is consumed by each of the energy storage devices within the power station. If the electricity consumption required for the operation of the energy storage devices is still not satisfied after all consumption, it is uniformly input by the power system.

[0064] The intelligent operation and dispatch platform of the power station determines the maintenance periods of one or more projects in the power station through intelligent analysis based on the operation and equipment status of the hydropower project, the wind farm project, the solar power generation project, and the compressed air energy storage project, combined with the water energy, wind energy, and solar energy resources in the project area and the demand of the power system.

[0065] The water for cleaning the photovoltaic modules of the photovoltaic power generation project and the mirrors of the solar thermal power station, as well as the cooling water for the solar thermal power station and the compressed air energy storage project, are all taken from the water source of the hydropower project.

[0066] Two embodiments are introduced below:

[0067] Embodiment 1:

[0068] This embodiment is further illustrated by taking a certain integrated water, wind, light, and energy storage multi-energy complementary green and intelligent power station that adopts the technical solution of the present invention as an example:

[0069] A certain integrated water, wind, light, and energy storage multi-energy complementary green and intelligent power station includes a conventional hydropower station, a wind farm project, a photovoltaic power generation project, and a compressed air energy storage project, which are planned, constructed, and operated and maintained synchronously. The dam foundation of the roller-compacted concrete retaining dam adopts intelligent vibroflotation technology, and the dam body adopts intelligent construction and intelligent temperature control technology, realizing intelligent operation throughout the plant. The design standards for the project grade, building grade, flood, earthquake resistance, environmental protection and soil and water conservation, occupational health, and safety emergency of the shared part are determined according to the highest standards of the conventional hydropower station, and the construction scale meets the shared requirements.

[0070] The wind farm project, the photovoltaic power generation project, and the compressed air energy storage project are built within the land acquisition scope of the conventional hydropower station. The wind turbine foundations, unit step-up power distribution device foundations, step-up substations, etc. of the wind farm project, the photovoltaic modules, busbar boxes, inverters, step-up transformers, etc. of the photovoltaic power generation project, the compressed energy storage system, heat storage and heat exchange system, gas storage system, expansion and energy release system, and other auxiliary systems of the compressed air energy storage project are arranged by using the reservoir area, surface power house, and ancillary buildings of the conventional hydropower station, sharing the on-site and off-site roads and transmission systems. The water for cleaning the photovoltaic modules of the photovoltaic power generation project and the cooling water for the compressed air energy storage project are all taken from the reservoir water of the conventional hydropower station. Intelligent monitoring devices are installed on all buildings, equipment, their corresponding foundations, slopes, etc.

[0071] The power generation equipment of the intelligent power station includes the water turbine generator sets of conventional hydropower stations, the wind turbine generator sets of wind farm projects, the photovoltaic modules of photovoltaic power generation projects, and the expansion machine supporting generators of compressed air energy storage projects; the energy storage equipment is the compressor supporting motors of compressed air energy storage projects, and a state on-line monitoring system is also set up, and all are intelligently connected to the intelligent operation and dispatching platform of the power station.

[0072] The intelligent operation and dispatching platform of the power station can comprehensively consider the power system demand and the power station's consumption capacity, intelligently analyze and determine the optimal operation mode of the power station, and automatically control the opening and closing of each power generation equipment and energy storage equipment: specifically:

[0073] When the electricity demand of the power system is greater than or equal to the total real-time power generation of the power generation equipment, the water turbine generator sets of conventional hydropower stations, the wind turbine generator sets of wind farm projects, the photovoltaic modules of photovoltaic power generation projects, and the expansion machine supporting generators of compressed air energy storage projects are all turned on, and the compressor supporting motors of compressed air energy storage projects are all turned off, and the externally transmitted power generation is jointly bundled and uniformly transmitted from the power station's transmission system.

[0074] When the electricity demand of the power system is less than the total real-time power generation of the power generation equipment or the power system only has a power supply demand, the intelligent operation and dispatching platform of the power station intelligently analyzes and determines the opening and closing sequence and operation scale of the water turbine generator sets of conventional hydropower stations, the wind turbine generator sets of wind farm projects, the photovoltaic modules of photovoltaic power generation projects, the expansion machine supporting generators and the compressor supporting motors of compressed air energy storage projects. As the electricity demand of the power system decreases or the power supply demand increases, the excess power generation of the power station is first consumed within the station. For the electricity consumption insufficient for the operation of the compressor supporting motors of compressed air energy storage projects, it is uniformly input by the power system, and the power generation equipment is automatically gradually turned off until all are turned off, and the energy storage equipment is automatically gradually turned on until all are turned on.

[0075] Furthermore, when the electricity demand of the power system is continuously increasing, the intelligent operation and dispatching platform of the power station can automatically analyze, first exclude the power generation equipment that cannot be turned on due to maintenance, and then automatically judge according to the following control steps and sequentially turn on the remaining power generation equipment for power generation:

[0076] S1. When the reservoir of the conventional hydropower station is in the flood season or needs to empty the flood control storage capacity for lowering the water level for operation, turn on the water turbine generator sets of the conventional hydropower station;

[0077] S2. When the reservoir of the conventional hydropower station is not in the flood season, the intelligent operation and dispatching platform of the power station calculates the real-time power generation profit per degree of electricity of each power station according to the established correlation between the key parameters such as the water level of the reservoir of the conventional hydropower station, the wind speed and direction of the wind farm project, and the solar radiation of the photovoltaic power generation project and the power generation, and controls the water turbine generator sets of the conventional hydropower station, as well as the wind turbine generator sets of the wind farm project and the photovoltaic modules of the photovoltaic power generation project, and turns them on in the order from high to low power generation profit.

[0078] S3. Start the generator supporting the expander of the compressed air energy storage project.

[0079] As each power generation device is sequentially started, the power supply continuously increases; when the power consumption demand of the power system continuously decreases, the intelligent operation and dispatching platform of the power station automatically shuts down the corresponding power generation devices according to the regulation steps sequence from S3 to S1 above. However, when the power generation of the corresponding power generation device in S2 exceeds the power consumption demand of the power system and the compressed air energy storage project can absorb it, it continues to be started.

[0080] When the power consumption demand of the power system continuously decreases, the intelligent operation and dispatching platform of the power station can automatically analyze, first exclude the part of the motor supporting the compressor of the compressed air energy storage project that cannot be started due to being in the maintenance state, and start the part that can operate normally.

[0081] The intelligent operation and dispatching platform of the power station, based on the operation and equipment status of the conventional hydropower station, wind farm project, photovoltaic power generation project and compressed air energy storage project, combines the water energy, wind energy and solar energy resources in the project area and the power system demand and other situations, and intelligently analyzes and determines the maintenance periods of one or more projects in the power station, and first maintains the power generation projects corresponding to the resource shortage period.

[0082] Embodiment 2:

[0083] This embodiment further illustrates with a certain integrated water, wind, light and storage multi - energy complementary green intelligent power station that adopts the technical solution of the present invention:

[0084] A certain integrated water, wind, light and storage multi - energy complementary green intelligent power station includes a pumped - storage power station, a wind farm project, a solar thermal power station and a compressed air energy storage project, which are planned, constructed and operated and maintained synchronously. The dam body of the concrete - faced rock - fill dam of the upper and lower reservoirs adopts intelligent construction technology, and the anti - seepage curtain of the dam foundation and dam shoulders adopts intelligent grouting technology, and the whole project realizes intelligent operation. The design standards of the project grade, building grade, flood, earthquake resistance, environmental protection and soil and water conservation, occupational health and safety emergency, etc. of the shared part are determined according to the highest pumped - storage power station standard, and the construction scale meets the shared requirements.

[0085] The wind farm project, solar thermal power generation station, and compressed air energy storage project are built within the land acquisition scope of the pumped-storage power station. For the wind farm project, the wind turbine foundations, unit step-up power distribution device foundations, step-up substations, etc.; for the solar thermal power generation station, the concentrating solar thermal system, thermal energy storage system, steam generation system, thermal system, water treatment system, water supply system, etc.; for the compressed air energy storage project, the compressed energy storage system, heat storage and heat exchange system, gas storage system, expansion and energy release system, other auxiliary systems, etc. are arranged by making use of the reservoir basin and surface buildings of the pumped-storage power station, and the internal and external roads and transmission systems are shared. The cleaning water for the mirrors of the solar thermal power generation station and the cooling water for the compressed air energy storage project are all taken from the upper reservoir and lower reservoir water of the pumped-storage power station. Intelligent monitoring devices are installed for all the buildings (structures), equipment and facilities, and their corresponding foundations and slopes, etc.

[0086] The power generation equipment of the integrated water-wind-solar-storage multi-energy complementary green and intelligent power station includes the reversible pump-turbine-generator set under the power generation condition of the pumped-storage power station, the wind turbines of the wind farm project, the steam turbine generator sets of the solar thermal power generation station, and the generator supporting the expander of the compressed air energy storage project; the energy storage equipment is the reversible pump-turbine-generator set under the pumping condition of the pumped-storage power station and the motor supporting the compressor of the compressed air energy storage project. A state on-line monitoring system is also set up, and all are intelligently connected to the intelligent operation and dispatching platform of the power station.

[0087] The intelligent operation and dispatching platform of the power station can comprehensively consider the power system demand and the power station's consumption capacity, intelligently analyze and determine the optimal operation mode of the power station, and automatically control the opening and closing of the power generation equipment and energy storage equipment:

[0088] Specifically, when the electricity demand of the power system is greater than or equal to the total real-time power generation of the power generation equipment, the reversible pump-turbine-generator set under the power generation condition of the pumped-storage power station, the wind turbines of the wind farm project, the steam turbine generator sets of the solar thermal power generation station, and the generator supporting the expander of the compressed air energy storage project are all started, and the motors supporting the compressors of the compressed air energy storage project are all shut down. The externally transmitted power generation is bundled and jointly sent out uniformly from the transmission system of the power station.

[0089] When the electricity demand of the power system is less than the total real-time power generation of the power generation equipment or the power system only has a power supply demand, the intelligent operation and dispatch platform of the power station can intelligently analyze whether the reversible pump-turbine generator units of the pumped storage power station are in the power generation mode or the pumping mode, the wind turbine units of the wind farm project, the steam turbine generator units of the solar thermal power generation station, and the opening and closing sequence and operation scale of the generators supporting the expanders and the motors supporting the compressors of the compressed air energy storage project; as the electricity demand of the power system decreases or the power supply demand increases, the excess power generation of the power station is first consumed within the station. For the electricity consumption of the reversible pump-turbine generator units in the pumping mode of the pumped storage power station and the motors supporting the compressors of the compressed air energy storage project that is insufficient, it is uniformly input by the power system, and the power generation equipment is automatically gradually shut down until all are shut down, and the energy storage equipment is automatically gradually started until all are started.

[0090] Furthermore, when the electricity demand of the power system is continuously increasing, the intelligent operation and dispatch platform of the power station can automatically analyze, first exclude the power generation equipment that cannot be started due to being in the maintenance state, and then automatically judge according to the following control steps and sequentially start the remaining power generation equipment:

[0091] S1. The intelligent operation and dispatch platform of the power station calculates the real-time power generation profit per degree of each power station according to the established correlation between key parameters such as wind speed and direction of the wind farm project and solar radiation of the solar thermal power generation project and the power generation amount, and controls the wind turbine units of the wind farm project and the steam turbine generator units of the solar thermal power generation station to start in the order from high to low power generation profit.

[0092] S2. Start the reversible pump-turbine generator units of the pumped storage power station.

[0093] S3. Start the generators supporting the expanders of the compressed air energy storage project.

[0094] As each power generation equipment is sequentially started, the power supply continuously increases; when the electricity demand of the power system is continuously decreasing, the intelligent operation and dispatch platform of the power station automatically shuts down the corresponding power generation equipment in the order of the above control steps from S3 to S1. However, when the power generation amount of the corresponding power generation equipment in S1 exceeds the electricity demand of the power system but can be consumed by the pumped storage power station and the compressed air energy storage project, it continues to be started.

[0095] When the electricity consumption demanded by the power system is continuously decreasing, the intelligent operation and dispatch platform of the power station can automatically analyze, first exclude the energy storage equipment that cannot be started due to being in the maintenance state, and then automatically judge according to the following control steps and sequentially start the remaining energy storage equipment:

[0096] S1. Start the reversible pump-turbine generator units in the pumping mode of the pumped storage power station.

[0097] S2. Start the compressor supporting motor of the compressed air energy storage project.

[0098] Based on the operation and equipment status of the pumped-storage power station, wind farm project, solar thermal power station, and compressed air energy storage project, and considering the water energy, wind energy, solar energy resources in the project area and the power system requirements, etc., the intelligent operation and dispatch platform of the power station intelligently analyzes and determines the maintenance periods of one or more projects in the power station.

[0099] By adopting the above technical solutions disclosed in the present invention, the following beneficial effects are obtained:

[0100] The integrated development of the water-wind-solar-storage integrated multi-energy complementary green and intelligent power station enables the wind farm, solar power generation, and compressed air energy storage project to make full use of the land acquisition, water source, buildings (structures), on-site and off-site roads, transmission system, etc. of the hydropower project for layout, and carry out synchronous planning, construction, operation and maintenance, and unified research, data collection, survey and design, project construction management, etc. There is no need for separate land acquisition or searching for another water source, saving land and water resources, avoiding the resettlement problem of the wind-solar-storage project, and saving the construction and production management costs of civil engineering, equipment and facilities, etc. shared with the hydropower project. At the same time, through intelligent construction and intelligent operation, the real-time switching of power transmission and energy storage in the power station according to the grid demand can be realized, which can greatly increase the power generation efficiency, make full use of the fast regulation ability of the hydropower unit, bundle and transmit the wind-solar-storage power generation and the hydropower unit power together, improve the utilization rate of the transmission system, reduce the impact of wind-solar power generation volatility, reduce the power system reserve, and facilitate the construction of a resource-saving clean, low-carbon, safe and efficient energy system, which has broad guiding and popularization significance.

[0101] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. The integrated water, wind, light and energy storage multi-energy complementary green and intelligent power station is characterized in that, It includes hydropower projects, wind farm projects, solar power generation projects, compressed air energy storage projects, intelligent monitoring devices, on-line condition monitoring systems, and intelligent operation and dispatching platforms for power stations; For the wind farm project, the solar power generation project, and the compressed air energy storage project, make full use of the land acquisition, water source, buildings, structures, on-site and off-site roads, and transmission system layout of the hydropower project, and carry out planning, construction, operation, and maintenance synchronously with the hydropower project to achieve intelligent construction and intelligent operation; For the hydropower project, the wind farm project, the solar power generation project, and the compressed air energy storage project, install the intelligent monitoring devices on all buildings, structures, equipment and facilities, and their corresponding foundations and slopes; the power generation equipment and energy storage equipment of each power generation project are also respectively equipped with the on-line condition monitoring systems; all the intelligent monitoring devices and the on-line condition monitoring systems are intelligently connected to the intelligent operation and dispatching platform of the power station; The real-time power generation of the power generation equipment of each power generation project is bundled and sent to the power system according to the dispatching needs or consumed by the energy storage equipment in the power station; if the power consumption required for the operation of the energy storage equipment is still not satisfied after all the energy storage equipment is consumed, it is uniformly input by the power system; The control method of the power generation equipment of each power generation project by the intelligent operation and dispatching platform of the power station is as follows: When the power consumption demand of the power system is continuously increasing, the intelligent operation and dispatching platform of the power station can automatically analyze, first exclude the power generation equipment that is in the maintenance state and cannot be started, and then automatically judge according to the following control steps and sequentially start the remaining power generation equipment: S1, When the reservoir of a conventional hydropower station or a pumped storage power station is in the flood season or needs to empty the flood control storage capacity for operation with reduced water level, start the water turbine generator set of the conventional hydropower station or the pumped storage power station; S2, When the reservoir of the conventional hydropower station or the pumped storage power station is in the non-flood season, the intelligent operation and dispatching platform of the power station calculates the real-time power generation profit per degree of each power station according to the pre-established correlation between the reservoir water level of the hydropower project, the wind speed and direction of the wind farm project, and the solar radiation and power generation of the solar power generation project, and controls the water turbine generator set of the conventional hydropower station or the pumped storage power station, as well as the wind turbine generators of the wind farm project, the photovoltaic modules of the photovoltaic power generation project, and the steam turbine generator sets of the solar thermal power generation station, and starts them in the order from high to low power generation profit; Among them, power generation profit = power generation sales revenue - power generation cost - sales tax Power generation cost = power station operating cost + tax + management cost + financial cost; S3, Start the reversible pump-turbine - generator motor set in the power generation mode of the pumped storage power station or the pumped storage power station; S4, Start the expander-driven generator of the compressed air energy storage project; As each power generation device is sequentially started, the power supply continuously increases; when the power consumption demand of the power system continuously decreases, the intelligent operation and dispatching platform of the power station automatically shuts down the corresponding power generation device in the order of the regulation steps from S4 to S1 above; however, when the power generation of the corresponding power generation device in S2 exceeds the power consumption demand of the power system and the pumped-storage power station or the hybrid pumped-storage power station and the compressed air energy storage project can absorb it, the corresponding power generation device continues to be started.

2. The integrated water, wind, light and energy storage multi-energy complementary green and intelligent power station according to claim 1, characterized in that, The hydropower project can be a conventional hydropower station, a pumped-storage power station or a hybrid pumped-storage power station; the solar power generation project can be a photovoltaic power generation project and / or a solar thermal power station.

3. The integrated water-wind-solar energy storage multi-energy complementary green and intelligent power station according to claim 2, wherein, For the wind turbine foundations, unit step-up power distribution device foundations and step-up substations of the wind farm project, the photovoltaic modules, busbar boxes, inverters and step-up transformers of the photovoltaic power generation project, the concentrating solar collector system, heat storage system, steam generation system, thermal system, water treatment system and water supply system of the solar thermal power station, and the compressed energy storage system, heat storage and heat exchange system, gas storage system, expansion and energy release system and other auxiliary systems of the compressed air energy storage project, make full use of the land acquisition, water source, buildings and structures layout of the hydropower project, share the on-site and off-site roads and transmission systems with the hydropower project, and carry out planning, construction and operation and maintenance synchronously.

4. The integrated water, wind, light and energy storage multi-energy complementary green and intelligent power station according to claim 2, characterized in that, The power generation devices of each power generation project include: the generator sets of the hydropower project, the wind turbines of the wind farm project, the power generation devices of the solar power generation project and the expander-driven generators of the compressed air energy storage project; The energy storage devices of each power generation project include: the energy storage units of the hydropower project and the compressor-driven motors of the compressed air energy storage project.

5. The integrated water-wind-solar-storage multi-energy complementary green and intelligent power station according to claim 4, wherein The generator sets of the hydropower project include the water turbine generator sets of the conventional hydropower station and the hybrid pumped-storage power station, and the reversible pump-turbine - generator motor sets in the power generation mode of the pumped-storage power station and the hybrid pumped-storage power station; the power generation devices of the solar power generation project include the photovoltaic modules of the photovoltaic power generation project and the steam turbine generator sets of the solar thermal power station; The energy storage units of the hydropower project include the reversible pump-turbine - generator motor sets in the pumping mode of the pumped-storage power station and the hybrid pumped-storage power station.

6. The integrated water-wind-solar-storage multi-energy complementary green and intelligent power station according to claim 5, wherein The intelligent operation and dispatching platform of the power station can comprehensively consider the power system demand and the power station absorption capacity, intelligently analyze and determine the optimal operation mode of the power station, and automatically control the opening and closing of each power generation device and the energy storage device of each power generation project: When the power consumption demand of the power system is greater than or equal to the total real-time power generation of the power generation devices, all the power generation devices are started and all the energy storage devices are shut down; When the electricity demand of the power system is less than the total real-time power generation of the power generation equipment or the power system only has a power supply demand, the intelligent operation and dispatching platform of the power station intelligently analyzes and determines the opening and closing sequence and operation scale of the power generation equipment and the energy storage equipment. As the electricity demand of the power system decreases or the power supply demand increases, each power generation equipment is automatically and gradually shut down until all are shut down, and each energy storage equipment is automatically and gradually started until all are started.

7. The integrated water, wind, light and energy storage multi-energy complementary green and intelligent power station according to claim 6, characterized in that, The regulation method of the intelligent operation and dispatching platform of the power station for each energy storage equipment of each power generation project is as follows: When the electricity consumption required by the power system continuously decreases, the intelligent operation and dispatching platform of the power station can automatically analyze, first exclude the energy storage equipment that is in a maintenance state and cannot be started, and then automatically judge according to the following regulation steps and sequentially start the remaining energy storage equipment: S1, start the reversible pump-turbine - generator motor set in the pumping condition of the pumped storage power station or the hybrid pumped storage power station; S2, start the compressor supporting motor of the compressed air energy storage project.

8. The integrated water, wind, light, and energy storage multi-energy complementary green and intelligent power station according to claim 5, characterized in that, It also includes: The externally transmitted power generation of each power generation equipment is bundled and jointly transmitted from the outgoing system of the power station; the power generation of each power generation equipment exceeding the demand of the power system is consumed by each energy storage equipment in the power station. If the electricity consumption required for the operation of the energy storage equipment is still not satisfied after all consumption, it is uniformly input by the power system; The intelligent operation and dispatching platform of the power station determines the maintenance period of one or more projects in the power station by intelligent analysis according to the operation and equipment status of the hydropower project, the wind farm project, the solar power generation project and the compressed air energy storage project, combined with the water energy, wind energy and solar energy resources in the project area and the demand situation of the power system; The water for cleaning the photovoltaic modules of the photovoltaic power generation project and the mirrors of the solar thermal power station, as well as the cooling water of the solar thermal power station and the compressed air energy storage project, are all taken from the water source of the hydropower project.