CN102926955A - Independently distributed comprehensive utilization system for renewable energy sources - Google Patents

Abstract

The present invention is an independent distributed renewable energy comprehensive utilization system, which is characterized in that the system includes a solar heat collection and heat storage device (1), a solar thermal power generation device (2), a multi-stage energy heat utilization device (3), a generation Material power generation device (4), wind power generation device (5), solar photovoltaic power generation device (6), seawater tidal power generation device (7), pumped storage power generation device (8) and AC load (9); solar thermal storage The heat device (1) is used to provide a driving heat source for the solar thermal power generation device (2) and the multi-level energy heat utilization device (3); the multi-level heat energy heat utilization device (3) is used to meet the daily needs of users. The integrated system is an independent system for renewable energy utilization, without any external fossil energy utilization, can achieve self-sufficiency, and can reasonably match the utilization of renewable energy according to daytime and nighttime conditions.

Description

An Independent Distributed Renewable Energy Comprehensive Utilization System

technical field

The invention relates to an independent distributed renewable energy comprehensive utilization device, in particular to an all-weather independent operation device which does not need to rely on any fossil energy renewable energy utilization device.

Background technique

Renewable energy is a resource that can be used permanently, such as solar energy, biomass energy, wind energy and tidal energy, etc., and there is no problem of resource depletion. All kinds of renewable energy are rich in resources, and if they can be fully utilized, they can well solve the problem of future energy demand.

Solar energy is the most abundant renewable energy resource in the world. It is a clean and non-polluting energy source. Its development and utilization are recognized as an important part of the world's energy strategy. Solar power generation technologies mainly include solar thermal power generation technology and solar photovoltaic power generation technology. Nowadays, these two technologies are developing rapidly, and many solar power stations have been built. Solar power generation has a good development prospect.

The core component of solar thermal utilization is a concentrating collector that converts solar energy into thermal energy. Concentrating solar thermal power generation can be roughly divided into three types: tower type, dish type and trough type. Tower-type solar thermal power generation is still in the demonstration project stage, dish-type solar thermal power generation is in the research and demonstration stage, and trough-type solar thermal power generation is currently the only form of commercialized solar thermal power generation. The trough solar thermal power generation device is called the trough parabolic mirror solar thermal power generation device. The trough solar thermal power generation device has the characteristics of large scale, long life and low cost, and is very suitable for commercial grid-connected power generation.

Biomass energy is the fourth largest energy source in the world, second only to coal, oil and natural gas, with abundant reserves. There are two main ways for humans to use biomass energy. One is to directly burn crop straw and firewood as direct fuel, and the other is to use agricultural and forestry waste, animal manure, garbage, and algae to generate combustible energy through the action of microorganisms. Indirect use of inert gas. The characteristics of biomass energy allow it to be used in large quantities, especially in areas lacking coal, the use of biomass energy can well relieve the energy pressure.

Wind energy is a renewable, non-polluting energy with huge reserves. From the perspective of current technological development maturity and economic feasibility, wind energy is the most competitive energy source. The wind energy utilization experience is rich, the industry and infrastructure are relatively mature, and the project scale is relatively flexible.

Tidal energy is also a renewable energy that does not consume fuel, is pollution-free, and is inexhaustible. Tidal energy will not be affected by floods or low water, and, among various marine energy sources, the development and utilization of tidal energy is the most realistic and convenient. For places such as isolated islands and coastal outposts, tidal energy is of practical significance, enabling islands to receive a steady supply of electricity at any time.

The proposal of the independent distributed renewable energy comprehensive utilization device is based on the following conditions: First, local resources can be used to solve the problems of supplying electricity in stores and people's daily life in remote areas such as isolated islands, communication bases, and border posts. . Remote areas lack complete power installations and sufficient energy supply for life. Nowadays, the combination of multiple renewable energy sources for power generation and heating can not only ensure the stability and continuity of combined power generation and heating, but also choose the optimal combined way of generating heat. Second, the comprehensive device can operate around the clock, and the operation of the entire device will not be affected by the insufficient supply of a certain energy source. Third, the renewable energy comprehensive utilization device is safer and more reliable than conventional energy supply devices. High energy utilization efficiency, environmental friendliness, good economy and so on.

Contents of the invention

Technical problem: The purpose of this invention is to effectively integrate multiple renewable energy utilization systems, realize joint power generation of various renewable energy utilization devices, and establish an all-weather independent distributed renewable energy utilization device.

Technical solution: In order to solve the above technical problems, the present invention provides an independent distributed renewable energy comprehensive utilization system, which includes a solar heat collection and storage device, a solar thermal power generation device, a multi-level energy heat utilization device, and a biomass power generation device. devices, wind power generation devices, solar photovoltaic power generation devices, seawater tidal power generation devices, pumped storage power generation devices and AC loads;

Solar heat collection and storage devices, used to provide driving heat sources for solar thermal power generation devices and multi-level energy heat utilization devices;

The multi-stage thermal energy utilization device is used to meet the daily needs of users;

The biomass power generation device is used to provide combustible gas for the solar thermal power generation device as a supplementary heat source, and it is also used to directly generate electricity through internal combustion engine combustion;

Solar thermal power generation devices, biomass power generation devices, wind power generation devices, solar photovoltaic power generation devices, seawater tidal power generation devices and pumped storage power generation devices are connected in parallel to supply power to AC loads; solar thermal power generation devices, biomass power generation devices, The power of wind power generation devices, solar photovoltaic power generation devices, seawater tidal energy power generation devices and pumped storage power generation devices is also used to control the start and stop of energy thermal utilization devices at all levels in multi-level energy thermal utilization devices;

A solar photovoltaic device is used to provide the electricity to start the system.

Preferably, the solar heat collection and storage device includes a solar heat collector and a solar heat storage device;

Solar thermal collectors are used to collect solar energy in sunny weather during the day, and supply solar thermal power generation devices and multi-level energy thermal utilization devices;

The solar heat storage device is used to store excess solar energy and release it on cloudy days or at night to provide a driving heat source for solar thermal power generation devices and multi-level energy heat utilization devices.

Preferably, the heat collection method adopted by the solar heat collector is any one of tower type, trough type or butterfly type.

Preferably, the solar thermal power generation device includes an expansion tank, a recuperator, a preheater, a steam generator, a superheated steam heater, a boiler, a steam turbine, a generator, a condenser, a low pressure preheater, a deaerator and a circulation pump ;

The power generation device is a double-circuit device, the first circuit is the heat transfer oil circulation circuit of the solar heat collection and storage device, and the second circuit is the water vapor circulation circuit;

The solar collector uses a trough-type parabolic concentrator to focus solar energy and obtain heat energy to heat the heat transfer oil. The heat transfer oil passing through the hot steam heater, steam generator and preheater and the heat transfer oil directly passing through the regenerator After the expansion tank is collected, there is a circulating pump to send it back to the solar collector;

The steam circulation loop starts from the preheater, the outlet of the preheater is connected to the inlet of the steam generator, the outlet of the steam generator is connected to the inlet of the superheated steam heater, the outlet of the superheated steam heater is connected to the inlet of the high pressure cylinder of the steam turbine, and the low pressure cylinder of the steam turbine The outlet is connected to the condenser, and the condenser is connected to a low-pressure preheater;

The steam at the outlet of the low-pressure preheater is mixed with the air pumped by the medium-pressure cylinder into the deaerator, and then pumped to the inlet of the preheater;

One way of the high-pressure cylinder pumping air is connected to the regenerator to be heated and then enters the medium-pressure cylinder, and the high-pressure cylinder heated by the regenerator is also separated into one path to match and mix with the other high-pressure cylinder not heated by the regenerator, as The driving heat source of the multi-stage energy heat utilization device;

Boiler 2 is connected in parallel between the inlet of the preheater and the outlet of the superheated steam heater.

Preferably, the biomass power generation device includes a biomass fermenter, a desulfurization and dehydration device, a compressor, a gas storage tank, an internal combustion engine and a generator;

The reaction product in the biomass fermentation tank passes through the desulfurization and dehydration device and the compressor in turn, and is finally stored in the gas storage tank; one outlet of the gas storage tank is connected to the internal combustion engine, and the outlet of the internal combustion engine is connected to the generator; the other outlet of the gas storage tank is directly connected to the boiler. import.

Preferably, the multi-level energy heat utilization device includes solar air conditioning, solar seawater desalination and solar hot water;

After the heat source passes through the solar air conditioner, it enters the solar seawater desalination through the valve, and the remaining heat source passes through the solar seawater desalination and enters the solar hot water through the valve; the output working fluid of the solar air conditioner, solar seawater desalination and solar hot water is aggregated and enters the boiler;

The heat source of the regenerator is directly from solar air conditioning to solar desalination of seawater, and then to solar hot water.

Preferably, the wind power generation device includes a wind power generator set, a controller, an inverter, an energy consumption load, a battery pack and a DC load;

The electric energy generated by wind power is changed from direct current to alternating current after passing through the controller and inverter successively and then merged into the grid, or the electric energy generated by wind power is stored by the battery pack and released through the battery pack when the power is needed, and the output direct current of the battery pack is also directly Supply to energy-consuming loads and DC loads.

Preferably, the solar photovoltaic power generation device includes a solar photovoltaic cell assembly, a controller, an inverter, a battery pack and a DC load;

The electric energy of solar photovoltaic power generation is changed from direct current to alternating current through the controller and inverter and then merged into the grid, or the electric energy of solar photovoltaic power generation is stored by the battery pack and can be released through the battery pack when electricity is needed. The output of the battery pack The direct current supplies the direct current load directly.

Preferably, the seawater tidal energy power generation device is a tidal energy generating set, which independently completes power generation by utilizing seawater ebb and flow and then connects it to the power grid.

Preferably, the pumped storage power generation device includes a hydroelectric power generation unit, a water pump, a high-level reservoir and a low-level reservoir;

The water from the high-level reservoir flows to the low-level reservoir to drive the hydroelectric generator set, convert the potential energy of the water into electrical energy, and integrate it into the power grid;

When the power consumption is low, the pumped storage power generation device converts the excess power generated by the system into the potential energy of water, that is, the water in the low-level reservoir is transported to the high-level reservoir by the pump of the pumped-storage power generation device; , and then release the water from the high-level reservoir to drive the hydroelectric generating set to generate electricity.

Beneficial effect:

1) The comprehensive device combines solar thermal power generation, solar photovoltaic power generation, wind power generation, tidal power generation, biomass energy utilization and pumped storage power generation, and can choose the optimal joint power generation method according to local conditions, and can achieve direct utilization of thermal energy , to achieve all-weather power supply and heating, especially suitable for use in isolated islands or remote areas.

2) There are three main ways of solar thermal power generation: butterfly type, tower type and trough type. Considering the maturity of the technology, the present invention chooses the trough solar thermal power generation technology, uses the trough parabolic concentrator to focus solar energy, and obtains heat energy at a higher temperature, thereby heating the working medium, generating steam, and driving the turbogenerator set generate electricity. The working fluid waste heat can be used as domestic heating.

3) In order to ensure the stability and durability of the solar heat utilization device, the present invention adds a solar thermal energy storage device to the device. In sunny weather during the day, the solar trough-type parabolic concentrator collects solar energy for supplying solar heat The excess solar energy is stored in a solar heat storage device and released on cloudy days or at night to provide a driving heat source for the power generation device.

4) The solar heat utilization device adopts a heat transfer oil-water double circuit heat exchange device, the first circuit is the heat transfer oil circulation circuit of the solar heat collection and storage device, and the second circuit is the water vapor circulation circuit. The heat transfer oil circulation loop and the steam circulation loop pass through the preheater, steam generator, superheated steam heater and regenerator to realize heat exchange between the two loops. The double-circuit heat exchange device can provide heat sources of different temperatures, in addition, it can also provide domestic and industrial hot water.

5) As the most stable power generation method, the solar photovoltaic power generation device can realize stable current power generation first in the device, and provide stable current for the subsequent startup of other components of the device.

6) In the biomass power generation device, the biomass fermentation tank reacts to generate flammable gas, which is stored in the gas storage tank, and the gas is burned in the internal combustion engine to release heat to do work, driving the generator to generate electricity.

7) In order to reduce the loss of waste heat, the biomass fermentation tank is equipped with two sets of waste heat devices, one is a solar waste heat device, which uses a part of the excess solar heat storage as a heating source in sunny weather during the day; the other set of waste heat devices is flue gas The waste heat device uses the flue gas of an internal combustion engine or a boiler as a heating source on cloudy days or at night.

8) Part of the electricity generated by the wind power generation device is directly incorporated into the grid to provide power for general AC loads, and the other part is directly used by energy-consuming loads. This distribution method not only optimizes the structure and function of the device, ensures the stability of the power device, but also makes full use of wind resources and reduces the loss of wind power generation.

9) Both the solar photovoltaic power generation device and the wind power generation device have added battery packs, which greatly increases the total capacity of the power grid. At the same time, the battery can release power during peak power consumption to ease the pressure on the power grid.

10) The solar heat utilization device has two boilers, and there is a secondary utilization of energy inside the boiler 2, which replaces the function of the regenerator. In cloudy days or when solar energy is insufficient at night and there is no stored heat source, the boiler 2 can be used to provide a driving heat source for the solar thermal power generation device and the multi-stage energy heat utilization device.

11) Taking into account the needs of people's basic life, the multi-level energy heat utilization device includes solar air conditioning, solar desalination of seawater and solar hot water, which can meet the different needs of water and electricity in people's life.

12) The tidal power generation device converts the potential energy of seawater into electrical energy by utilizing the ebb and flow of seawater. This device expands the scope of use of the comprehensive device of the present invention on the seaside or isolated islands on the sea, fully combines the actual conditions of the islands, and makes resource utilization more comprehensive.

13) The pumped storage power generation device converts excess electric energy into potential energy of water and stores it, and re-releases it into electric energy during the peak of electricity consumption to supplement the electricity demand of the grid.

14) For various weather conditions, the design of the comprehensive device of the present invention can complete the best matching of various renewable energy sources according to different heat utilization and power consumption requirements.

15) The design of the comprehensive device of the present invention realizes independent power generation and heat supply without using any external fossil energy, and is a completely self-sufficient renewable energy utilization device.

Description of drawings

Fig. 1 is a schematic diagram of the comprehensive device;

In the figure are: solar heat collection and storage device 1, solar thermal power generation device 2, multi-level energy heat utilization device 3, biomass power generation device 4, wind power generation device 5, solar photovoltaic power generation device 6, seawater tidal energy power generation device 7, Pumped storage power generation device 8 and AC load 9;

Fig. 2 is the structural representation of solar thermal utilization and biomass power generation device;

In the figure are: solar collector 1-1, solar thermal energy storage device 1-2, expansion tank 2-1, regenerator 2-2, preheater 2-3, steam generator 2-4, superheated steam heating Device 2-5, boiler 24-8, steam turbine 2-6, generator 2-7, condenser 2-8, low pressure preheater 2-9, deaerator 2-10, solar air conditioner 3-1, solar energy Seawater desalination 3-2, solar hot water 3-3, biomass fermentation tank 4-1, desulfurization and dehydration device 4-2, compressor 4-3, gas storage tank 4-4, internal combustion engine 4-5, generator 4- 6. Boiler 14-7 and boiler 24-8;

Fig. 3 is the structural representation of wind power device;

In the figure there are: wind power generating set 5-1, controller 5-2, inverter 5-3, energy consumption load 5-4, battery pack 5-5 and DC load 5-6;

Fig. 4 is a structural schematic diagram of a solar photovoltaic power generation device;

In the figure are: solar photovoltaic cell assembly 6-1, controller 6-2, inverter 6-3, battery pack 6-4 and DC load 6-5;

Fig. 5 is a partial structural schematic diagram of a tidal energy power generation and pumped storage device;

In the figure, there are: tidal energy generating unit 7-1, hydroelectric generating unit 8-1, water pump 8-2, high-level reservoir 8-3 and low-level reservoir 8-4.

Detailed ways

Below in conjunction with accompanying drawing, the present invention will be further described.

As shown in Figure 1, part of the solar energy collected by the solar heat collection and storage device 1 is provided to the solar thermal power generation device 2 to obtain heat energy at a higher temperature, thereby heating the working medium, generating steam, and driving the turbogenerator to generate electricity; the other part As the driving heat source of the multi-stage energy heat utilization device 3 . A part of the biomass stored in the biomass power generation device 4 is used as fuel for the internal combustion engine 4-5 to drive the unit to generate electricity; the other part is used as a backup heat source for the thermal oil circulation of the solar thermal power generation device 2 and a supplementary heat source in the water cycle. Wind power generation device 5, solar photovoltaic power generation device 6, seawater tidal power generation device 7, pumped storage power generation device 8, solar thermal power generation device 2 and biomass power generation device 4 are connected in parallel to the power grid to provide power for AC load 9 .

As shown in Figure 2, the power generation system is a double-loop system, the first loop is the heat transfer oil circulation loop of the solar heat collection and storage system 1, and the second loop is the water vapor circulation loop. The heat transfer oil circulation circuit and the steam circulation circuit pass through the preheater 2-3, the steam generator 2-4, the superheated steam heater 2-5 and the regenerator 2-2 to realize heat exchange between the two cycles.

Solar heat collector 1-1 uses a trough-type parabolic concentrating heat collector to focus solar energy and obtain heat energy at a higher temperature to heat the heat transfer oil. The heat transfer oil passing through the hot steam heater 2-5, the steam generator 2-4 and the preheater 2-3 and the heat transfer oil directly passing through the regenerator 2-2 are collected by the expansion tank 2-1 and sent back by a circulating pump Solar thermal collector 1-1. The solar thermal energy storage device 1-2 is connected in parallel at both ends of the solar thermal collector 1-1, and the excess energy collected by the solar thermal collector 1-1 is stored by the solar thermal energy storage device 1-2 for cloudy days or night solar energy. Use when not enough. At both ends of the solar heat collector 1-1, there is a heater that utilizes solar energy to heat the biomass fermentation tank 4-1 in parallel. When the weather is fine during the day, the device uses a part of solar energy to heat the biomass fermenter 4-1 to keep the internal temperature stable. The biomass produced by the reaction in the biomass fermentation tank 4-1 is compressed by the compressor 4-3 and stored in the gas storage tank 4-4 after being passed through the desulfurization and dehydration device 4-2, and provided to the internal combustion engine 4-5 and the boiler 14- 7 use. The high-temperature flue gas of the internal combustion engine 4-5 and the boiler 14-7 is used as another heating method in the biomass fermenter 4-1. The boiler 14-7 is connected in parallel at both ends of the solar heat collector 1-1, and has a similar function to the solar thermal energy storage device 1-2, and also provides a backup heat source for the thermal oil circulation in cloudy days or when solar energy is insufficient at night. Biomass fermentation tank 4-1 has two sets of waste heat devices, one is a solar waste heat device, which uses part of the excess solar heat storage as a heating source in sunny weather during the day; the other set of waste heat devices is a flue gas waste heat device. On cloudy days or at night, use the flue gas of the internal combustion engine 4-5 or the boiler 14-7 as a heating source.

After the steam cycle passes through the preheater 2-3, steam generator 2-4 and superheated steam heater 2-5, it enters the steam turbine 2-6 high-pressure cylinder, and the exhaust steam at the outlet of the low-pressure cylinder passes through the condenser 2-8 and low-pressure preheating After being pumped into the deaerator 2-10 and mixed with the medium-pressure cylinder, it is pumped to the inlet of the preheater 2-3. The exhaust air of the high-pressure cylinder is heated by the regenerator 2-2 and then enters the medium-pressure cylinder, and the exhaust air of the high-pressure cylinder heated by the regenerator 2-2 is also divided into one and the other that has not been heated by the regenerator 2-2. One path of high-pressure cylinder extraction is matched and mixed as the driving heat source of the multi-stage energy heat utilization device 3 . The boiler 24-8 is connected in parallel between the inlet of the preheater 2-3 and the outlet of the superheated steam heater 2-5, and the heat source is provided by other biomass to complete the steam cycle from preheating to superheating. At the same time, there is a secondary utilization of energy inside the boiler 24-8, which replaces the function of the regenerator 2-2. On cloudy days or when solar energy is insufficient at night, and there is no stored heat source, the boiler 24-8 can be used to provide a driving heat source for the solar thermal power generation device 2 and the multi-level energy heat utilization device 3, and superheated steam can also be used to directly pass the steam The bypass at the inlet of the turbine 2-6 does not generate thermal power generation, and directly provides the driving heat source for the multi-stage energy heat utilization device 3 .

The multi-level energy heat utilization system 3 can realize combined and independent operation respectively, that is, the driving heat source can be utilized step by step, firstly solar air conditioning 3-1, then solar desalination 3-2, and finally solar hot water 3-3; Only run one or two of these parts, depending on your specific needs.

As shown in Figure 3, a part of the electric energy generated by the wind power generating set 5-1 is directly connected to the grid through the controller 5-2 and the inverter 5-3; a part can be directly fed into the energy consumption load 5-4 and the DC load 5- 6 use. The excess electric energy is stored by the storage battery pack 5-5, and is released during the peak power consumption, and is directly used by the energy-consuming load 5-4 and the DC load 5-6, or through the controller 5-2 and the inverter 5-6. 3. Directly merged into the power grid, thereby relieving the power supply pressure of the power grid.

As shown in Fig. 4, part of the electric energy generated by the solar photovoltaic panel 6-1 is incorporated into the grid through the controller 6-2 and the inverter 6-3; and part of it is directly used by the DC load 6-5. The excess electric energy generated can be stored by the storage battery pack 6-4, released during the peak power consumption, and can be directly used by the DC load 6-5 or connected to the grid through the controller 6-2 and the inverter 6-3. Thereby relieving the pressure on the grid power supply.

As shown in Fig. 5, the tidal energy generator set 7-1 utilizes the tide rise and fall of seawater to drive the set to generate electricity, and is directly connected to the power grid. When the power consumption is low, use the excess electric power of the grid to drive the water pump 8-2 to transport the water from the low reservoir 8-4 to the high reservoir 8-3, and convert the electric energy into the potential energy of water and store it; Then, the potential energy of the water in the high-level reservoir 8-3 is released to drive the hydroelectric generating set 8-1 to generate electricity, which is incorporated into the power grid, thereby alleviating the power supply pressure of the power grid.

Each power generation terminal of the comprehensive system is connected to the local grid, and the power distribution device is a solar collector 1-1, a circulation pump, a solar air conditioner 3-1, a solar desalination 3-2, and a solar hot water 3-3. Other AC loads 9 provide AC power. The power generation methods of the integrated system can be operated jointly to generate electricity, or can be generated independently, and can be matched and used according to specific conditions. At the same time, the power generation method can also be selected according to the power demand. The integrated system can realize the energy storage of electric energy during the low peak of power consumption, and release the stored electric energy during the peak of power consumption, so as to relieve the pressure on the power grid.

The above descriptions are only preferred embodiments of the present invention, and the scope of protection of the present invention is not limited to the above embodiments, but all equivalent modifications or changes made by those of ordinary skill in the art according to the disclosure of the present invention should be included within the scope of protection described in the claims.

Claims (10)

1. independent distribution type renewable energy utilization system is characterized in that: this system comprise solar energy heat-collecting heat-storage device (1), solar energy thermal-power-generating device (2), multistage energy heat utilization device (3), biomass generator (4), wind generating unit (5), solar energy photovoltaic generator (6), seawer tide can electricity generating device (7), pumped-storage power generation device (8) and AC load (9);

Solar energy heat-collecting heat-storage device (1) is used to solar energy thermal-power-generating device (2) and multistage energy heat utilization device (3) that driving heat source is provided;

Multi-stage heat energy heat utilization device (3) is used for satisfying user's daily life needs;

Biomass generator (4) is used to solar energy thermal-power-generating device (2) that inflammable gas is provided, and replenishes as thermal source, simultaneously also for directly generating electricity through combustion in IC engine;

Solar energy thermal-power-generating device (2), biomass generator (4), wind generating unit (5), solar energy photovoltaic generator (6), seawer tide energy electricity generating device (7) and pumped-storage power generation device (8) are connected in parallel, and are used for powering to AC load (9); The electric power of solar energy thermal-power-generating device (2), biomass generator (4), wind generating unit (5), solar energy photovoltaic generator (6), seawer tide energy electricity generating device (7) and pumped-storage power generation device (8) is used for controlling the start and stop of multistage energy heat utilization device (3) energy heat utilization device at different levels simultaneously;

Solar energy photovoltaic generator (6) is used for providing electric power, starts this system.

2. independent distribution type renewable energy utilization system according to claim 1 is characterized in that: solar energy heat-collecting heat-storage device (1) comprises solar thermal collector (1-1) and solar energy storage device (1-2);

Solar thermal collector (1-1) is used for collecting solar energy under the sunny weather by day, supplies with solar energy thermal-power-generating device (2) and multistage energy heat utilization device (3);

Solar energy heat-storage device (1-2) is used for storing unnecessary solar energy, discharges at cloudy day or night, for solar energy thermal-power-generating device (2) and multistage energy heat utilization device (3) provide driving heat source.

3. independent distribution type renewable energy utilization system according to claim 2 is characterized in that: the thermal-arrest mode that solar thermal collector (1-1) adopts is any in tower, slot type or the butterfly.

4. independent distribution type renewable energy utilization system according to claim 2, it is characterized in that: solar energy thermal-power-generating device (2) comprises expansion drum (2-1), regenerator (2-2), preheater (2-3), steam generator (2-4), overheating steam heater (2-5), boiler 2(4-8), steam turbine (2-6), generator (2-7), condenser (2-8), low pressure preheater (LPP (2-9), oxygen-eliminating device (2-10) and recycle pump;

This electricity generating device is dual circuit device, and a loop is the heat transfer oil circulation loop of solar energy heat-collecting heat-storage device (1), and secondary circuit is the water vapor circulation loop;

Solar thermal collector (1-1) utilizes grooved parabolic concentrator heat collector, focused solar energy, obtain heat energy, thereby the heating conduction oil has recycle pump to send solar thermal collector (1-1) back to after expansion drum (2-1) compiles through the conduction oil of superheated vapor heater (2-5), steam generator (2-4) and preheater (2-3) and the conduction oil of direct process regenerator (2-2);

Steam circuit is begun by preheater (2-3), preheater (2-3) outlet connects the import of steam generator (2-4), the outlet of steam generator (2-4) is connected with overheating steam heater (2-5) import, overheating steam heater (2-5) outlet connects the import of steam turbine (2-6) high-pressure cylinder, the outlet of steam turbine (2-6) low pressure (LP) cylinder is connected with condenser (2-8), connects low pressure preheater (LPP (2-9) behind the condenser (2-8);

Low pressure preheater (LPP (2-9) outlet steam and intermediate pressure cylinder are bled and are entered oxygen-eliminating device (2-10) and mix, and then are transported to preheater (2-3) import by pump;

HP turbine extraction one tunnel enters intermediate pressure cylinder after connecting regenerator (2-2) heating, and also tell one the tunnel simultaneously through the HP turbine extraction of regenerator (2-2) heating and mate with another road HP turbine extraction without regenerator (2-2) heating and to mix, as the driving heat source of multistage energy heat utilization device (3);

Boiler 2(4-8) is connected in parallel between the outlet of preheater (2-3) import and overheating steam heater (2-5).

5. independent distribution type renewable energy utilization system according to claim 4, it is characterized in that: described biomass generator (4) comprises biomass ferment tank (4-1), desulfurization dewatering device (4-2), compressor (4-3), gas holder (4-4), internal-combustion engine (4-5) and generator (4-6);

Reaction product finally is stored in gas holder (4-4) successively by desulfurization dewatering device (4-2) and compressor (4-3) in the biomass ferment tank (4-1); Outlet of gas holder (4-4) connects internal-combustion engine (4-5), and internal-combustion engine (4-5) outlet is connected with generator (4-6); Directly connection and boiler 2(4-8 of another outlet of gas holder (4-4)) import.

6. independent distribution type renewable energy utilization system according to claim 5, it is characterized in that: described multistage energy heat utilization device (3) comprises solar airconditioning (3-1), solar seawater desalination (3-2) and solar water (3-3);

Thermal source enters solar seawater desalination (3-2) through solar airconditioning (3-1) is rear by valve, enters solar water (3-3) through valve behind the remaining thermal source process solar seawater desalination (3-2); The output working medium of solar airconditioning (3-1), solar seawater desalination (3-2) and solar water (3-3) gather enter boiler 2(4-8);

Regenerator (2-2) thermal source directly by solar airconditioning (3-1) to solar seawater desalination (3-2), arrive again solar water (3-3).

7. independent distribution type renewable energy utilization system according to claim 6 is characterized in that: described wind generating unit (5) device comprises wind power generating set (5-1), controller (5-2), inverter (5-3), power consumption load (5-4), battery pack (5-5) and DC load (5-6);

The electric energy of wind-power electricity generation successively via controller (5-2) is become to exchange by direct current afterwards with inverter (5-3) and is connected to the grid, or the electric energy of wind-power electricity generation stores with battery pack (5-5) and discharges by battery pack when electricity consumption needs, and the output DC of battery pack (5-5) also directly is supplied to power consumption load (5-4) and DC load (5-6).

8. independent distribution type renewable energy utilization system according to claim 7, it is characterized in that: described solar energy photovoltaic generator (6) comprises solar photovoltaic battery component (6-1), controller (6-2), inverter (6-3), battery pack (6-4) and DC load (6-5);

The electric energy of solar energy power generating successively via controller (6-2) is become to exchange by direct current afterwards with inverter (6-3) and is connected to the grid, or the electric energy of solar energy power generating stores and can be discharged by battery pack when electricity consumption needs by battery pack (6-4), and the output DC of battery pack (6-4) is directly supplied DC load (6-5).

9. independent distribution type renewable energy utilization system according to claim 8 is characterized in that: described seawer tide can be tidal power unit (7-1) by electricity generating device (7), utilize seawater flood tide that the generating of ebb complete independently is connected to the grid.

10. according to claim 1 or 9 described independent distribution type renewable energy utilization systems, it is characterized in that: described pumped-storage power generation device (8) comprises hydroelectric power group (8-1), suction pump (8-2), elevated reservoir (8-3) and low level reservoir (8-4);

The current direction low level reservoir (8-4) of elevated reservoir (8-3) drives hydroelectric power unit (8-1), and the potential energy of water is converted into electric energy, is connected to the grid;

When the electricity consumption ebb, the potential energy that the excrescent electric power that pumped-storage power generation device (8) produces system is converted into water namely utilizes the suction pump (8-2) of pumped-storage power generation device (8) that the water in the low level reservoir (8-4) is transported in the elevated reservoir (8-3); During peak of power consumption, the water with elevated reservoir (8-3) discharges drive hydroelectric power unit (8-1) generating again.

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