阅读说明：本技术 一种互补耦合发电系统及方法 (Complementary coupling power generation system and method ) 是由 崔华 杨豫森 陈辉 徐波 谭智 于 2018-07-02 设计创作，主要内容包括：本发明公开了一种互补耦合发电系统,包括互补耦合发电控制装置、风力发电装置、光热耦合燃气斯特林发电装置；互补耦合发电控制装置通过电力线路和控制线路将风力发电装置、光热耦合燃气斯特林发电装置连接起来并最终连接电网,互补耦合发电控制装置通过控制调节风力发电装置和光热耦合燃气斯特林发电装置各自的发电实时目标值,保证二者耦合的发电实时目标值满足电网负荷需求。(The invention discloses a complementary coupling power generation system, which comprises a complementary coupling power generation control device, a wind power generation device and a photo-thermal coupling gas Stirling power generation device; the complementary coupling power generation control device connects the wind power generation device and the photo-thermal coupling gas Stirling power generation device through a power circuit and a control circuit and finally connects the wind power generation device and the photo-thermal coupling gas Stirling power generation device with a power grid, and the complementary coupling power generation control device controls and adjusts the respective real-time power generation target values of the wind power generation device and the photo-thermal coupling gas Stirling power generation device to ensure that the coupled real-time power generation target values meet the load requirements of the power grid.)

1. A complementary coupling power generation system is characterized by comprising a complementary coupling power generation control device, a wind power generation device and a photo-thermal coupling gas Stirling power generation device;

the complementary coupling power generation control device connects the wind power generation device and the photo-thermal coupling gas Stirling power generation device through a power line and a control line and finally connects the wind power generation device and the photo-thermal coupling gas Stirling power generation device with a power grid, and the complementary coupling power generation control device controls and adjusts the respective power generation real-time target values of the wind power generation device and the photo-thermal coupling gas Stirling power generation device to ensure that the power generation real-time target values coupled with the wind power generation device and the photo-thermal.

2. The complementary coupled power generation system of claim 1, wherein: the gas used by the photo-thermal coupling gas Stirling power generation device is combustible gas, and the combustible gas is from any one or combination of a plurality of natural gas pipelines, natural gas storage tanks, electrolytic hydrogen production devices, biomass gas supply devices, methane gas supply devices and coke oven gas supply devices.

3. The complementary coupled power generation system of claim 1, wherein: the wind power generation device comprises at least one of a horizontal-axis fan or a vertical-axis fan.

4. The complementary coupled power generation system of claim 1, wherein: the photo-thermal coupling gas Stirling power generation device is a disc type solar photo-thermal coupling gas Stirling power generation device.

5. The complementary coupled power generation system of any of claims 1-4, wherein: the photo-thermal coupling gas Stirling power generation device is also provided with a combustible gas storage device, and the combustible gas storage device is used for meeting the gas supply requirement of the photo-thermal coupling gas Stirling power generation device at any time.

6. The complementary coupled power generation system of any of claims 1-4, wherein: the system is characterized by further comprising a power grid dispatching center, wherein the power grid dispatching center is in communication connection with the complementary coupling power generation control device, the wind power generation device and the photo-thermal coupling gas Stirling power generation device, and the complementary coupling power generation control device receives dispatching instructions of the power grid dispatching center in a unified mode.

7. The complementary coupled power generation system of any of claims 1-4, wherein: the wind power generation device and/or the photo-thermal coupling gas Stirling power generation device are/is arranged in a power station or distributed in different geographical positions in a power grid in the same area.

8. A method of generating electricity using a complementary coupled power generation system according to any one of claims 1 to 7, by:

s1: setting a total power generation real-time target value of the complementary coupling power generation system through the complementary coupling power generation control device;

s2: the complementary coupling power generation control device sets a gas power generation real-time target value of the photo-thermal coupling gas Stirling power generation device according to wind resources and illumination resources prediction results of the current time point and the future time period;

s3: judging whether the gas storage capacity of the photo-thermal coupling gas Stirling power generation device is sufficient or not, and if so, executing a step S4; if not, supplementing the gas storage capacity of the photo-thermal coupling gas Stirling power generation device, and executing the step S4;

s4: all power generation real-time target values P connected into the wind power generation device_{Wind power}Entering a regional power grid access system;

s5: calculating real-time target value P of gas complement power generation_{Qi (Qi)}＝P_{Combination of Chinese herbs}-P_{Wind power}(ii) a Wherein said P_{Combination of Chinese herbs}The real-time target value of the power generation of the complementary coupling power generation system is obtained;

s6: starting the photo-thermal coupling gas Stirling power generation device to supply gas complementReal-time target value P for power generation_{Qi (Qi)}Supplementing the gas storage capacity of the photo-thermal coupling gas Stirling power generation device;

s7: when the gas storage capacity is insufficient, the peak regulation electric quantity of the power grid is called;

s8: and ensuring that the total power generation real-time target value of the coupled power generation system meets the power grid requirement.

Technical Field

The invention relates to the field of power generation, in particular to a power generation system and method for coupling wind power, photo-thermal or gas Stirling power generation.

Background

With the growing shortage of global energy consumption, people pay more attention to the environment. Energy shortage and environmental pollution have become important topics influencing people's lives and restricting social development, and all countries around the world strive to develop clean new energy.

Wind power in installed capacity of global renewable energy power generation has overwhelming advantages, wind energy accounts for more than half of the renewable energy utilized, and wind power generation is the most advanced of renewable energy application technologies. In recent years, wind power generation is rapidly increased in the world, and the prospect is bright.

Solar energy, as a clean, environmentally friendly, and abundant natural energy, is increasingly used as the energy source in human resources. The disc type Stirling solar thermal power generation technology has the advantages of highest conversion efficiency, lowest emission and flexible arrangement, is favored in the field of photo-thermal power generation, and has good energy utilization efficiency and market development prospect.

However, wind power generation and disc type photo-thermal Stirling power generation also have some problems at present. The existing wind power generation or disc type photo-thermal Stirling power generation is influenced by wind conditions and illumination conditions, and the real-time power generation target value of the existing wind power generation or disc type photo-thermal Stirling power generation is dynamically changed along with the change of illumination and wind power, so that the real-time power generation target value is an unstable power supply which is unwilling to accept by a power grid, and how to adjust the peak of the power grid aiming at the two unstable power generation devices is a difficult problem in front of power grid managers in all regions.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a coupled power generation system and a coupled power generation method for complementarily coupling a gas Stirling generator with excellent peak regulation performance with wind power and photo-thermal power generation so as to stably output the total real-time target value of the power generation of the gas Stirling generator, the wind power and the photo-thermal power generation to a power grid.

In order to achieve the purpose, the invention adopts the following technical scheme:

a complementary coupling power generation system comprises a complementary coupling power generation control device, a wind power generation device and a photo-thermal coupling gas Stirling power generation device;

the complementary coupling power generation control device connects the wind power generation device and the photo-thermal coupling gas Stirling power generation device through a power line and a control line and finally connects the wind power generation device and the photo-thermal coupling gas Stirling power generation device with a power grid, and the complementary coupling power generation control device controls and adjusts the respective power generation real-time target values of the wind power generation device and the photo-thermal coupling gas Stirling power generation device to ensure that the power generation real-time target values coupled with the wind power generation device and the photo-thermal.

Further, the gas used by the photo-thermal coupling gas Stirling power generation device is combustible gas, and the combustible gas is from any one or combination of a plurality of natural gas pipelines, natural gas storage tanks, electrolytic hydrogen production devices, biomass gas supply devices, methane gas supply devices and coke oven gas supply devices.

Further, the wind power generation device comprises at least one of a horizontal-axis fan or a vertical-axis fan.

Further, the photo-thermal coupling gas Stirling power generation device is a disc type solar photo-thermal coupling gas Stirling power generation device.

Furthermore, the photo-thermal coupling gas Stirling power generation device is also provided with a combustible gas storage device, and the combustible gas storage device is used for meeting the gas supply requirement of the photo-thermal coupling gas Stirling power generation device at any time.

The system further comprises a power grid dispatching center, wherein the power grid dispatching center is in communication connection with the complementary coupling power generation control device, the wind power generation device and the photo-thermal coupling gas Stirling power generation device, and the complementary coupling power generation control device receives dispatching instructions of the power grid dispatching center in a unified mode.

Further, the wind power generation device and/or the photo-thermal coupling gas Stirling power generation device are/is arranged in a power station or distributed in different geographical positions in a power grid in the same area.

A power generation method adopts the complementary coupling power generation system to generate power through the following steps:

s1: setting a total power generation real-time target value of the complementary coupling power generation system through the complementary coupling power generation control device;

s2: the complementary coupling power generation control device sets a gas power generation real-time target value of the photo-thermal coupling gas Stirling power generation device according to the wind resource and illumination resource prediction results of the current time point and the future time period;

s3: judging whether the gas storage capacity of the photo-thermal coupling gas Stirling power generation device is sufficient or not, and if so, executing a step S4; if not, supplementing the gas storage capacity of the photo-thermal coupling gas Stirling power generation device, and executing the step S4;

s4: all power generation real-time target values P connected into the wind power generation device_{Wind power}Entering a regional power grid access system;

s5: calculating real-time target value P of gas complement power generation_{Qi (Qi)}＝P_{Combination of Chinese herbs}-P_{Wind power}(ii) a Wherein said P_{Combination of Chinese herbs}The real-time target value of the power generation of the complementary coupling power generation system is obtained;

s6: starting the photo-thermal coupling gas Stirling power generation device to provide gas to complement power generation real-time target value P_{Qi (Qi)}Supplementing the gas storage capacity of the photo-thermal coupling gas Stirling power generation device;

s7: when the gas storage capacity is insufficient, the peak regulation electric quantity of the power grid is called;

s8: and ensuring that the total power generation real-time target value of the coupled power generation system meets the power grid requirement.

The invention has the beneficial effects that:

1. the combination of unstable power generation wind power, disc type photo-thermal power generation and a gas Stirling generator set with good peak regulation capacity is realized, and the stable output of the real-time target value of the power generation of the coupled power generation system is realized;

2. the difficulty of power grid balance adjustment is reduced, and the power quality of renewable energy power generation is optimized;

3. the phenomenon of wind and light abandoning is reduced, and the peak-load and frequency-modulation pressure of the power grid is reduced.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings of the present invention will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and it is obvious to those skilled in the art that other drawings can be obtained based on the drawings without inventive labor.

FIG. 1 is a general architecture diagram of an embodiment of the present invention;

fig. 2 is a flow chart of a power generation method according to an embodiment of the present invention.

To further clarify the structure and connection between the various components of the present invention, the following reference numerals are given and described:

1. a regional power grid dispatching center; 2. a complementary coupling power generation control device; 3. a wind power generation device; 4. a photo-thermal coupling gas Stirling power generation device.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, and it should be noted that the present embodiment is based on the technical solution, and the detailed implementation and the specific operation process are provided, but the protection scope of the present invention is not limited to the present embodiment.