Water, wind, light and storage integrated multi-energy complementary green intelligent power station

Abstract

The invention provides a water-wind-light-storage integrated multi-energy complementary green intelligent power station which comprises a water-power project, a wind power plant 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 scheduling platform. A wind power plant, a solar power generation project and a compressed air energy storage project make full use of layout of land acquisition, water sources, buildings (structures), roads inside and outside the plant, a sending-out system and the like of a hydropower project, planning, construction and operation maintenance are synchronously carried out, and intelligent construction and intelligent operation are achieved. The real-time power generation amount of each power generation project is jointly bundled to be sent out to the power system or absorbed in the power station, and the power consumption with insufficient energy storage operation is uniformly input by the power system. Land and water resources can be saved, construction and production management costs of civil engineering, equipment facilities and the like are saved, power generation benefits are increased, the utilization rate of a sending-out system is improved, the influence of wind and light power generation volatility is reduced, power system standby is reduced, and the method has wide guidance and popularization significance.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydropower, wind power, solar power generation and compressed air energy storage, and specifically relates to a green smart power station integrating water, wind, light and storage with multiple energy complementarity. Background Art

[0002] At present, the development model of water, wind, solar and compressed air energy storage is single. Hydropower, wind power, solar power generation and compressed air energy storage projects belong to different power companies, and each of them carries out project planning, construction and operation and maintenance. It is necessary to conduct research and data collection, survey and design, land acquisition and resettlement, and project construction management separately. Special buildings (structures), on-site roads, and transmission systems for construction projects are required. In addition, the cleaning of photovoltaic modules, solar thermal mirrors, and the cooling systems of solar thermal power stations and compressed air energy storage projects require a large amount of water. The utilization rate of various resources is low, resulting in high construction and production management costs for individual projects. The intelligent level of project safety monitoring is relatively low, resulting in low efficiency and high risk in power station operation and management. At the same time, due to the randomness and intermittent nature of wind and solar energy, the power generation is more volatile. 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 companies to operate inefficiently. There is a common phenomenon that the power grid has to be shut down when it cannot be absorbed, affecting the power generation efficiency of various power generation projects. Summary of the invention

[0003] In view of the defects of the prior art, the present invention provides an integrated water, wind, solar and storage multi-energy complementary green smart 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 a water-wind-solar-storage integrated multi-energy complementary green smart 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, an online status monitoring system and a power station intelligent operation and dispatching platform;

[0006] The wind farm project, the solar power generation project and the compressed air energy storage project make full use of the land acquisition, water sources, buildings, structures, on-site and off-site roads and transmission system layout of the hydropower project, and carry out planning, construction and operation and maintenance simultaneously with the hydropower project to achieve intelligent construction and smart operation;

[0007] All buildings, structures, equipment facilities and their corresponding foundations and slopes of the hydropower project, the wind farm project, the solar power generation project and the compressed air energy storage project are equipped with the intelligent monitoring device; the power generation equipment and energy storage equipment of each power generation project are also respectively equipped with the status online monitoring system; all the intelligent monitoring devices and the status online monitoring system are intelligently connected to the power station intelligent operation and dispatching platform;

[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 scheduling needs, or is 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 met after all the power is consumed by the energy storage equipment, it will be uniformly input by the power system.

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

[0010] Preferably, the wind turbine foundations, unit booster distribution device foundations and booster substations of the wind farm project, the photovoltaic modules, junction boxes, inverters and booster transformers of the photovoltaic power generation project, the concentrating thermal collection systems, heat storage systems, steam generation systems, thermal systems, water treatment systems and water supply systems of the solar thermal power station, the compressed energy storage systems, heat storage and exchange systems, gas storage systems, expansion energy release systems and other auxiliary systems of the compressed air energy storage project make full use of the land acquisition, water sources, buildings and structure layout of the hydropower project, share the roads and delivery systems inside and outside the site with the hydropower project, and carry out planning, construction, operation and maintenance simultaneously.

[0011] Preferably, the power generation equipment of each power generation project includes: a generator set of the hydropower project, a wind turbine set of the wind farm project, power generation equipment of the solar power generation project, and an expander supporting generator of the compressed air energy storage project;

[0012] The energy storage equipment of each power generation project includes: the energy storage unit of the hydropower project and the compressor supporting motor of the compressed air energy storage project.

[0013] Preferably, the generator sets of the hydropower project include the turbine generator sets of the conventional hydropower station and the hybrid pumped-storage power station, and the reversible pump-turbine-generator motor sets 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 a reversible pump-turbine-generator motor unit in the pumping operation state of the pumped-storage power station and the hybrid pumped-storage power station.

[0015] Preferably, the power station intelligent operation and dispatching platform 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 equipment and energy storage equipment of each power generation project:

[0016] When the power 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;

[0017] When the power 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 power supply demand, the smart operation and dispatching platform of the power station intelligently analyzes and determines the start-up and shutdown sequence and operation scale of the power generation equipment and the energy storage equipment, and automatically and gradually shuts down each of the power generation equipment until all of them are shut down, and automatically and gradually opens each of the energy storage equipment until all of them are opened as the power demand of the power system decreases or the power supply demand increases.

[0018] Preferably, the power station intelligent operation and dispatching platform regulates each power generation equipment of each power generation project in the following manner:

[0019] When the power demand of the power system continues to increase, the power station intelligent operation and dispatching platform can automatically analyze and first exclude the power generation equipment that is under maintenance and cannot be turned on, and then automatically judge and turn on the remaining power generation equipment in sequence according to the following control steps:

[0020] S1, when the reservoir of the conventional hydropower station or the hybrid pumped-storage power station is in a flood period or needs to vacate the flood control storage capacity to lower the water level, start the 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 a non-flood period, the power station intelligent operation and dispatching platform calculates the real-time power generation profit per kilowatt-hour of each power station according to the pre-established relationship between the water level of the reservoir 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 hydro-turbine generator set of the conventional hydropower station or the hybrid pumped-storage power station, the wind turbine generator set of the wind farm project, the photovoltaic module of the photovoltaic power generation project, and the steam turbine generator set of the solar thermal power station to start in the order of power generation profit from high to low;

[0022] Among them, power generation profit = power generation sales income - 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 of 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 water-wind-solar-storage integrated multi-energy complementary green smart power station provided by the present invention has the following advantages:

[0036] The integrated development of the water, wind, solar and storage integrated multi-energy complementary green smart power station can make full use of the land acquisition, water source, building (structure), on-site roads, and transmission system of the hydropower project for the layout of wind farms, solar power generation and compressed air energy storage projects, synchronize planning, construction and operation and maintenance, and uniformly carry out various tasks such as research and data collection, survey and design, and project construction management. There is no need to acquire land separately and find another water source, which saves land and water resources, avoids the resettlement of wind, solar and storage projects, and saves the construction and production management costs of civil engineering, equipment and facilities shared with hydropower projects. At the same time, through intelligent construction and intelligent operation, the real-time switching of power transmission and power storage in the power station according to the needs of the power grid can be realized, which can greatly increase the power generation efficiency, and make full use of the rapid adjustment capacity of hydropower units to bundle wind, solar and storage power generation and hydropower units for transmission, improve the utilization rate of the transmission system, reduce the impact of wind and solar power generation fluctuations, and reduce the standby of the power system, which is convenient for building a resource-saving, clean, low-carbon, safe and efficient energy system, and has a wide range of guiding and promotion significance. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the 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 green smart power station with multi-energy complementarity of water, wind, light and storage. Wind power, solar power generation and compressed air energy storage projects make full use of the land acquisition, water sources, buildings (structures), roads inside and outside the site, and transmission systems of hydropower projects for layout, and synchronous planning, construction and operation and maintenance. Through intelligent construction and smart operation, the problems of land acquisition, water sources, construction management and other problems of various power generation projects are solved, and the overall construction and production management costs are greatly reduced; at the same time, the combined bundling and transmission of electricity and the real-time switching of energy storage in the power station are realized, the power generation and transmission system utilization rate are improved, the impact of the volatility of wind and solar power generation on the safe and stable operation of the power grid is reduced, and the technical problems such as power system standby are reduced.

[0039] The present invention provides a water-wind-solar-storage integrated multi-energy complementary green smart 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, an online status 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 sources, buildings, structures, on-site and off-site roads and transmission systems of the hydropower project, and carry out planning, construction and operation and maintenance simultaneously with the hydropower project to achieve intelligent construction and smart operation;

[0041] All buildings, structures, equipment and facilities and their corresponding foundations and slopes of the hydropower project, wind farm project, solar power generation project and compressed air energy storage project are equipped with the intelligent monitoring device; the power generation equipment and energy storage equipment of each power generation project are also equipped with the status online monitoring system; all the intelligent monitoring devices and the status online monitoring system are intelligently connected to the power station intelligent operation and dispatching platform;

[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 scheduling needs, or is 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 met after all the power is consumed by the energy storage equipment, it will be uniformly input by the power system.

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

[0044] The solar power generation project may be a photovoltaic power generation project, or a solar thermal power station, or a combination of a photovoltaic power generation project and a solar thermal power station.

[0045] The wind turbine foundation, booster distribution device foundation, booster substation, etc. of the wind farm project, the photovoltaic modules, junction boxes, inverters, booster transformers, etc. of the photovoltaic power generation project, the concentrated solar thermal 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 exchange system, gas storage system, expansion energy release system, other auxiliary systems, etc. of the compressed air energy storage project, make full use of the land acquisition, water source, building (structure) and other arrangements of the hydropower project, share the roads and delivery systems inside and outside the site, take into account the construction organization design, and carry out planning, construction and operation and maintenance simultaneously. The design standards of the shared parts, such as the engineering grade, building level, flood, earthquake resistance, environmental protection and soil and water conservation, occupational health and safety emergency, etc., shall be determined according to the highest standards of the projects involved, and the construction scale shall meet the shared requirements.

[0046] The power generation equipment of each power generation project includes: the generator set of the hydropower project, the wind turbine set of the wind farm project, the power generation equipment of the solar power generation project and the expander supporting generator of the compressed air energy storage project; wherein: the generator set of the hydropower project includes the turbine generator set of the conventional hydropower station and the hybrid pumped-storage power station, the reversible pump-turbine-generator motor set 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 set of the solar thermal power station.

[0047] The energy storage equipment of each power generation project includes: the energy storage unit of the hydropower project and the compressor supporting motor of the compressed air energy storage project; wherein: the energy storage unit of the hydropower project includes a reversible pump-turbine-generator motor unit for the pumping conditions of the pumped-storage power station and the hybrid pumped-storage power station.

[0048] The power station intelligent operation and dispatching platform can comprehensively consider the power system demand and the power station absorption capacity, follow the principle of minimizing the power station operation cost and maximizing the benefit, 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 of each power generation project:

[0049] Specifically, when the power 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 are turned on and all the energy storage equipment are turned off; when the power 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 power supply demand, the power station smart operation and dispatching platform intelligently analyzes and determines the start-up and shutdown sequence and operation scale of the power generation equipment and the energy storage equipment, and as the power demand of the power system decreases or the power supply demand increases, the power generation equipment is automatically and gradually turned off until all are turned off, and the energy storage equipment is automatically and gradually turned on until all are turned on.

[0050] As a specific method, under one working condition, the power station intelligent operation and dispatching platform regulates each power generation equipment of each power generation project in the following manner:

[0051] When the power demand of the power system continues to increase, the power station intelligent operation and dispatching platform can automatically analyze and first exclude the power generation equipment that is under maintenance and cannot be turned on, and then automatically judge and turn on the remaining power generation equipment in sequence according to the following control steps:

[0052] S1, when the reservoir of the conventional hydropower station or the hybrid pumped-storage power station is in a flood period or needs to vacate the flood control storage capacity to lower the water level, start the turbine generator set 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 a non-flood period, the intelligent operation and dispatching platform of the power station calculates the real-time power generation profit per kilowatt-hour of each power station based on the pre-established correlation between the 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, and controls the hydro-turbine generator sets of the conventional hydropower station or the hybrid pumped-storage power station, 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 to start in the order of power generation profit from high to low.

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

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

[0056] 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;

[0057] S4, start the expander supporting generator of the compressed air energy storage project.

[0058] As each power generation equipment is turned on in sequence, the power supply continues to increase; when the power demand of the power system continues to decrease, the power station intelligent operation and dispatching platform automatically shuts down the corresponding power generation equipment according to the control steps from S4 to S1. However, when the power generation of the corresponding power generation equipment in S2 exceeds the power 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.

[0059] Under another working condition, the power station intelligent operation and dispatching platform regulates each energy storage device of each power generation project in the following manner:

[0060] 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:

[0061] 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;

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

[0063] The transmitted power of each of the power generation equipment is bundled and transmitted uniformly 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 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 input uniformly from the power system.

[0064] The power station smart operation and dispatching platform intelligently analyzes and determines the maintenance period of one or more projects in the power station based on 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 power system demand.

[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 of 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 described below:

[0067] Embodiment 1:

[0068] This embodiment takes a water-wind-solar-storage integrated multi-energy complementary green smart power station that adopts the technical solution of the present invention as an example to further illustrate:

[0069] A water, wind, solar and storage integrated multi-energy complementary green smart power station, including conventional hydropower stations, wind farm projects, photovoltaic power generation projects and compressed air energy storage projects, is planned, constructed and operated and maintained simultaneously. The foundation of the roller compacted concrete retaining dam adopts intelligent vibroflotation technology, and the dam body adopts intelligent construction and intelligent temperature control technology, so that the whole plant can achieve intelligent operation. The design standards of the common parts, such as engineering grade, building level, flood, earthquake resistance, environmental protection and soil and water conservation, occupational health and safety emergency, are determined according to the highest conventional hydropower station standards, and the construction scale meets the common requirements.

[0070] Wind farm projects, photovoltaic power generation projects and compressed air energy storage projects are built within the scope of land acquisition of conventional hydropower stations. The wind turbine foundations, booster distribution device foundations, booster substations, etc. of wind farm projects, photovoltaic modules, junction boxes, inverters, booster transformers, etc. of photovoltaic power generation projects, compressed energy storage systems, heat storage and exchange systems, gas storage systems, expansion energy release systems and other auxiliary systems of compressed air energy storage projects, etc., are arranged using the reservoir area, ground plant and ancillary buildings of conventional hydropower stations, and share roads and delivery systems inside and outside the site. The water for cleaning photovoltaic modules of photovoltaic power generation projects and the cooling water for compressed air energy storage projects are all taken from the reservoir water of conventional hydropower stations. All buildings (structures), equipment and facilities and their corresponding foundations and slopes are equipped with intelligent monitoring devices.

[0071] The power generation equipment of the smart power station includes the turbine generator sets of conventional hydropower stations, the wind turbine sets of wind farm projects, the photovoltaic modules of photovoltaic power generation projects and the expander supporting generators of compressed air energy storage projects; the energy storage equipment is the compressor supporting motor of the compressed air energy storage project, and is also equipped with an online status monitoring system, all of which are intelligently connected to the smart operation and dispatching platform of the power station.

[0072] The power station intelligent operation and dispatching platform can comprehensively consider the power system demand and the power station's 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 equipment and energy storage equipment: specifically:

[0073] When the power demand of the power system is greater than or equal to the total real-time power generation of the power generation equipment, the turbine generator sets of the conventional hydropower station, the wind turbine generator sets of the wind farm project, the photovoltaic modules of the photovoltaic power generation project and the expander supporting generators of the compressed air energy storage project are all turned on, and the compressor supporting motors of the compressed air energy storage project are all turned off, and the external power generation is bundled and sent out from the power station's sending system;

[0074] When the power 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 power supply demand, the smart operation and dispatching platform of the power station intelligently analyzes and determines the start-up and shutdown sequence and operation scale of the turbine generator sets of conventional hydropower stations, the wind turbine sets of wind farm projects, the photovoltaic modules of photovoltaic power generation projects, the expander supporting generators and the compressor supporting motors of compressed air energy storage projects. As the power demand of the power system decreases or the power supply demand increases, the excess power generation of the power station is first consumed in the station, and the power consumption that is insufficient to cover the operation of the compressor supporting motors of the compressed air energy storage project is uniformly input by the power system, and the power generation equipment is automatically and gradually shut down until all of them are shut down, and the energy storage equipment is automatically and gradually opened until all of them are opened.

[0075] Furthermore, when the power demand of the power system continues to increase, the power station intelligent operation and dispatching platform can automatically analyze and first exclude the power generation equipment that is under maintenance and cannot be turned on, and then automatically judge and turn on the remaining power generation equipment in sequence according to the following control steps:

[0076] S1, when the reservoir of a conventional hydropower station is in flood season or needs to vacate the flood control storage capacity to lower the water level, the turbine generator set of the conventional hydropower station is turned on;

[0077] S2, when the reservoir of a conventional hydropower 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 kilowatt-hour of each power station based on the pre-established correlation between key parameters such as the reservoir water level 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 turbine generator sets of the conventional hydropower station, the wind turbine sets of the wind farm project, and the photovoltaic modules of the photovoltaic power generation project to start them in order of power generation profit from high to low.

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

[0079] As the power generation equipment is turned on in sequence, the power supply continues to increase; when the power demand of the power system continues to decrease, the power station smart operation and dispatching platform automatically shuts down the corresponding power generation equipment according to the control steps from S3 to S1. However, when the power generation of the corresponding power generation equipment in S2 exceeds the power demand of the power system and the compressed air energy storage project can absorb it, it will continue to be turned on.

[0080] When the power consumption demanded by the power system continues to decrease, the power station's intelligent operation and dispatching platform can automatically analyze and first exclude the part of the compressed air energy storage project compressor's supporting motor that is under maintenance and must not be turned on, and then turn on the part that can operate normally.

[0081] The power station smart operation and dispatching platform intelligently analyzes and determines the maintenance period of one or more projects in the power station based on the operation and equipment and facility conditions of conventional hydropower stations, wind farm projects, photovoltaic power generation projects and compressed air energy storage projects, combined with the water, wind and solar energy resources and power system needs in the project area, and first inspects the power generation projects corresponding to the resource-scarce period.

[0082] Embodiment 2:

[0083] This embodiment takes a water-wind-solar-storage integrated multi-energy complementary green smart power station that adopts the technical solution of the present invention as an example to further illustrate:

[0084] A water, wind, solar and storage integrated multi-energy complementary green smart power station, including a pumped storage power station, a wind farm project, a solar thermal power station and a compressed air energy storage project, is planned, constructed and operated and maintained simultaneously. The dam body of the upper and lower reservoirs' concrete face rockfill retaining dam adopts intelligent construction technology, and the dam foundation and dam shoulder anti-seepage curtain adopt intelligent grouting technology, and the whole project realizes intelligent operation. The design standards for the engineering grade, building level, flood, earthquake resistance, environmental protection and soil and water conservation, occupational health and safety emergency of the common parts are determined according to the highest pumped storage power station standards, and the construction scale meets the common requirements.

[0085] Wind farm projects, solar thermal power stations and compressed air energy storage projects are built within the scope of land acquisition for pumped storage power stations. The wind turbine foundations, booster distribution device foundations, booster substations, etc. of wind farm projects, the concentrating and collecting systems, heat storage systems, steam generation systems, thermal systems, water treatment systems, water supply systems, etc. of solar thermal power stations, and the compressed energy storage systems, heat storage and exchange systems, gas storage systems, expansion energy release systems, and other auxiliary systems of compressed air energy storage projects are arranged using the reservoir basins and ground buildings of pumped storage power stations, sharing roads and delivery systems inside and outside the field. The water used to clean the mirrors of the solar thermal power station and the cooling water used for the compressed air energy storage project are all taken from the water in the upper and lower reservoirs of the pumped storage power station. All buildings (structures), equipment and facilities and their corresponding foundations and slopes are equipped with intelligent monitoring devices.

[0086] The power generation equipment of the integrated water, wind, solar and storage multi-energy complementary green smart power station includes the reversible pump-turbine-generator motor set for the power generation condition of the pumped-storage power station, the wind turbine set for the wind farm project, the steam turbine generator set for the solar thermal power station and the expander supporting generator for the compressed air energy storage project; the energy storage equipment includes the reversible pump-turbine-generator motor set for the pumping condition of the pumped-storage power station and the compressor supporting motor for the compressed air energy storage project, and is also equipped with an online status monitoring system, all of which are intelligently connected to the smart operation and dispatching platform of the power station.

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

[0088] Specifically, when the power 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 motor unit of the pumped storage power station, the wind turbine unit of the wind farm project, the steam turbine generator unit of the solar thermal power station and the expander supporting generator of the compressed air energy storage project are all turned on, and the compressor supporting motors of the compressed air energy storage project are all turned off, and the external power generation is bundled and sent out from the power station's sending system;

[0089] When the power 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 power supply demand, the smart operation and dispatching platform of the power station intelligently analyzes and determines whether the reversible pump-turbine-generator motor unit of the pumped-storage power station is in power generation or pumping condition, the start-up and shutdown sequence and operation scale of the wind turbine unit of the wind farm project, the steam turbine generator unit of the solar thermal power station, the expander supporting generator and the compressor supporting motor of the compressed air energy storage project; as the power demand of the power system decreases or the power supply demand increases, the excess power generation of the power station is first consumed in the station, and the power consumption that is insufficient for the reversible pump-turbine-generator motor unit of the pumped-storage power station in pumping condition and the compressor supporting motor of the compressed air energy storage project is uniformly input by the power system, and the power generation equipment is automatically and gradually shut down until all are shut down, and the energy storage equipment is automatically and gradually opened until all are opened.

[0090] Furthermore, when the power demand of the power system continues to increase, the power station intelligent operation and dispatching platform can automatically analyze and first exclude the power generation equipment that is under maintenance and cannot be turned on, and then automatically judge and turn on the remaining power generation equipment in sequence according to the following control steps:

[0091] S1, the power station intelligent operation and dispatching platform calculates the real-time power generation profit per kilowatt-hour of each power station based on the pre-established correlation between key parameters such as wind speed and direction of wind farm projects and solar radiation of solar thermal power generation projects and power generation, and controls the wind turbines of wind farm projects and steam turbine generators of solar thermal power stations to start them in order of power generation profit from high to low.

[0092] S2, start the reversible pump turbine-generator motor unit of the pumped storage power station;

[0093] S3, start the expander supporting generator of the compressed air energy storage project.

[0094] As the power generation equipment is turned on in sequence, the power supply continues to increase; when the power demand of the power system continues to decrease, the power station intelligent operation and dispatching platform automatically shuts down the corresponding power generation equipment according to the control steps from S3 to S1. However, when the power generation of the corresponding power generation equipment in S1 exceeds the power demand of the power system and the pumped storage power station and compressed air energy storage project can absorb it, it will continue to be turned on.

[0095] 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:

[0096] S1, start the reversible pump-turbine-generator motor unit in the pumping condition of the pumped storage power station;

[0097] S2, turns on the compressor motor of the compressed air energy storage project.

[0098] The power station smart operation and dispatching platform intelligently analyzes and determines the maintenance period of one or more projects in the power station based on the operation and equipment and facility conditions of the pumped storage power station, wind farm project, solar thermal power station and compressed air energy storage project, combined with the water, wind and solar energy resources and power system demand in the project area.

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

[0100] The integrated development of the water, wind, solar and storage integrated multi-energy complementary green smart power station can make full use of the land acquisition, water source, building (structure), on-site roads, and transmission system of the hydropower project for the layout of wind farms, solar power generation and compressed air energy storage projects, synchronize planning, construction and operation and maintenance, and uniformly carry out various tasks such as research and data collection, survey and design, and project construction management. There is no need to acquire land separately and find another water source, which saves land and water resources, avoids the resettlement of wind, solar and storage projects, and saves the construction and production management costs of civil engineering, equipment and facilities shared with hydropower projects. At the same time, through intelligent construction and intelligent operation, the real-time switching of power transmission and power storage in the power station according to the needs of the power grid can be realized, which can greatly increase the power generation efficiency, and make full use of the rapid adjustment capacity of hydropower units to bundle wind, solar and storage power generation and hydropower units for transmission, improve the utilization rate of the transmission system, reduce the impact of wind and solar power generation fluctuations, and reduce the standby of the power system, which is convenient for building a resource-saving, clean, low-carbon, safe and efficient energy system, and has a wide range of guiding and promotion significance.

[0101] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be considered as the scope of protection of the present invention.

Claims

1. A green smart power station integrating water, wind, solar and storage, which is characterized by: Including hydropower projects, wind farm projects, solar power projects, compressed air energy storage projects, intelligent monitoring devices, online status monitoring systems and power station intelligent operation and dispatching platforms; The wind farm project, the solar power generation project and the compressed air energy storage project make full use of the land acquisition, water sources, buildings, structures, on-site and off-site roads and transmission system layout of the hydropower project, and carry out planning, construction and operation and maintenance simultaneously with the hydropower project to achieve intelligent construction and smart operation; All buildings, structures, equipment facilities and their corresponding foundations and slopes of the hydropower project, the wind farm project, the solar power generation project and the compressed air energy storage project are equipped with the intelligent monitoring device; the power generation equipment and energy storage equipment of each power generation project are also respectively equipped with the status online monitoring system; all the intelligent monitoring devices and the status online monitoring system are intelligently connected to the power station intelligent operation and dispatching platform; 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 scheduling needs, or is 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 met after all the power is consumed by the energy storage equipment, it will be uniformly input by the power system.

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

3. The water-wind-solar-storage integrated multi-energy complementary green smart power station according to claim 2 is characterized in that: The wind farm project's wind turbine foundations, unit booster distribution device foundations and booster substations, the photovoltaic modules, combiner boxes, inverters and booster transformers of the photovoltaic power generation project, the solar thermal power station's concentrating solar collection system, heat storage system, steam generation system, thermal system, water treatment system and water supply system, the compressed air energy storage system, heat storage and exchange system, gas storage system, expansion energy release system and other auxiliary systems, fully utilize the land acquisition, water sources, buildings and structure layout of the hydropower project, share the on-site roads and delivery systems with the hydropower project, and carry out planning, construction, operation and maintenance simultaneously.

4. The water-wind-solar-storage integrated multi-energy complementary green smart power station according to claim 2 is characterized in that: The power generation equipment of each power generation project includes: the generator set of the hydropower project, the wind turbine set of the wind farm project, the power generation equipment of the solar power generation project and the expander supporting generator of the compressed air energy storage project; The energy storage equipment of each power generation project includes: the energy storage unit of the hydropower project and the compressor supporting motor of the compressed air energy storage project.

5. The water-wind-solar-storage integrated multi-energy complementary green smart power station according to claim 4 is characterized in that: The generator sets of the hydropower project include the turbine generator sets of the conventional hydropower station and the hybrid pumped-storage power station, and the reversible pump-turbine-generator motor sets 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; The energy storage unit of the hydropower project includes a reversible pump-turbine-generator motor unit in the pumping operation state of the pumped-storage power station and the hybrid pumped-storage power station.

6. The water-wind-solar-storage integrated multi-energy complementary green smart power station according to claim 5 is characterized in that: The power station intelligent operation and dispatching platform 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 equipment and energy storage equipment of each power generation project: When the power 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 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 power supply demand, the smart operation and dispatching platform of the power station intelligently analyzes and determines the start-up and shutdown sequence and operation scale of the power generation equipment and the energy storage equipment, and automatically and gradually shuts down each of the power generation equipment until all of them are shut down, and automatically and gradually opens each of the energy storage equipment until all of them are opened as the power demand of the power system decreases or the power supply demand increases.

7. The water-wind-solar-storage integrated multi-energy complementary green smart power station according to claim 6 is characterized in that: The power station intelligent operation and dispatching platform regulates and controls the power generation equipment of each power generation project in the following manner: When the power demand of the power system continues to increase, the power station intelligent operation and dispatching platform can automatically analyze and first exclude the power generation equipment that is under maintenance and cannot be turned on, and then automatically judge and turn on the remaining power generation equipment in sequence according to the following control steps: S1, when the reservoir of the conventional hydropower station or the hybrid pumped-storage power station is in a flood period or needs to vacate the flood control storage capacity to lower the water level, start the turbine generator set of the conventional hydropower station or the hybrid pumped-storage power station; S2, when the reservoir of the conventional hydropower station or the hybrid pumped-storage power station is in a non-flood period, the power station intelligent operation and dispatching platform calculates the real-time power generation profit per kilowatt-hour of each power station according to the pre-established relationship between the water level of the reservoir 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 hydro-turbine generator set of the conventional hydropower station or the hybrid pumped-storage power station, the wind turbine generator set of the wind farm project, the photovoltaic module of the photovoltaic power generation project, and the steam turbine generator set of the solar thermal power station to start in the order of power generation profit from high to low; Among them, power generation profit = power generation sales income - power generation cost - sales tax Power generation cost = power station operating cost + tax + management cost + financial cost; 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; S4, starting the expander supporting generator of the compressed air energy storage project; 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.

8. The water-wind-solar-storage integrated multi-energy complementary green smart power station according to claim 6 is characterized in that: The power station intelligent operation and dispatching platform regulates the energy storage equipment of each power generation project in the following manner: 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: 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; S2, turning on the motor supporting the compressor of the compressed air energy storage project.

9. The water-wind-solar-storage integrated multi-energy complementary green smart power station according to claim 5 is characterized in that: Also includes: 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; 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; 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.