CN-122015164-A - Geothermal heating system integrating electricity price response and heat storage scheduling strategy

CN122015164ACN 122015164 ACN122015164 ACN 122015164ACN-122015164-A

Abstract

The invention discloses a geothermal heating system integrating electricity price response and heat storage scheduling strategies, belongs to the technical field of geothermal heating, and can solve the problems of low efficiency and poor stability of the existing single geothermal energy heating system. The system comprises a deep geothermal well, a photo-thermal module, a temperature reverser, a heat storage module, a control module and a heat storage module, wherein the temperature reverser comprises an inlet end and a plurality of outlet ends, the deep geothermal well and the photo-thermal module are both communicated with the inlet end, the temperature reverser is used for detecting the temperature of heat exchange fluid at the inlet end and controlling the outflow direction of the heat exchange fluid according to the temperature, the heat storage module comprises a heat storage heating unit and a heat storage water supply unit which are connected to different outlet ends of the temperature reverser, the heat storage temperature of the heat storage heating unit is higher than that of the heat storage water supply unit, and the control module is used for controlling the deep geothermal well and the photo-thermal module to store heat to the heat storage module in a valley electricity period of a heat utilization valley period and controlling the heat storage module to release heat to a user end in a peak electricity period of the heat utilization peak period. The invention is used for geothermal heat supply.

Inventors

HU RUKUN
WANG XINGDAN
CHEN WEI
MA BO
LIU XUAN
ZHANG YONG
ZHANG LIAO
LI YANBIN
WANG JING
Lv Jiaojiao

Assignees

中国电建集团西北勘测设计研究院有限公司

Dates

Publication Date: 20260512
Application Date: 20260123

Claims (10)

1. A geothermal heating system incorporating a power price response and a thermal storage scheduling strategy, the system comprising: a deep geothermal well for providing geothermal energy; the photo-thermal module is used for collecting solar energy and converting the solar energy into heat energy; The temperature reverser comprises an inlet end and a plurality of outlet ends, wherein the deep geothermal well and the photo-thermal module are communicated with the inlet end, and the temperature reverser is used for detecting the temperature of heat exchange fluid flowing into the inlet end and controlling the outflow direction of the heat exchange fluid according to the temperature of the heat exchange fluid; The heat storage module comprises a heat storage heating unit and a heat storage water supply unit which are connected to different outlet ends of the temperature reverser, wherein the heat storage temperature of the heat storage heating unit is higher than that of the heat storage water supply unit, the heat storage heating unit is used for heating a user side, and the heat storage water supply unit is used for supplying water to the user side; the control module is connected with the deep geothermal well, the photo-thermal module, the temperature reverser and the heat storage module, and is used for controlling the deep geothermal well and the photo-thermal module to store heat to the heat storage module in a valley period of a heat utilization low valley period and controlling the heat storage module to release heat to the user side in a peak period of a heat utilization peak period.
2. The system of claim 1, wherein the temperature diverter comprises a first outlet end, a second outlet end, and a third outlet end; The heat storage and heating unit comprises a first heat accumulator communicated with the first outlet end and a second heat accumulator communicated with the second outlet end, wherein the heat storage temperature of the first heat accumulator is higher than that of the second heat accumulator; The control module is specifically used for controlling the first heat accumulator and the second heat accumulator to release heat to the user side in sequence in the peak electricity period of the heat utilization peak period.
3. The system of claim 2, wherein the heat storage and heating unit further comprises: The first heat pump is communicated with the second heat accumulator and is used for heating heat exchange fluid in the second heat accumulator; one side of the secondary heat accumulator is communicated with the first heat pump, and the other side of the secondary heat accumulator is communicated with the user side and is used for storing heat of heat exchange fluid heated in the first heat pump and heating the user side in a heat use peak period; The control module is connected with the first heat pump and the secondary heat accumulator, and is used for controlling the first heat pump and the secondary heat accumulator to work when the heat storage temperature in the second heat accumulator is smaller than the heat supply temperature and is currently in the valley period.
4. The system of claim 3, wherein the deep geothermal well is in communication with the user via a pipe, the temperature reverser further configured to detect a heat source temperature of the deep geothermal well; And the control module is also used for controlling the deep geothermal well to heat the user side when the heat source temperature of the deep geothermal well is greater than or equal to the heat supply temperature.
5. The system of claim 4, wherein the deep geothermal well is in communication with the first heat pump via a pipeline; And the control module is also used for controlling the first heat pump to heat the heat exchange fluid in the deep geothermal well when the heat source temperature of the deep geothermal well is smaller than the heat supply temperature, and heating the user side by utilizing the heat of the heat exchange fluid after the heat exchange fluid is heated.
6. The system of claim 1, wherein the system further comprises: The shallow geothermal well is communicated with the user terminal and is used for providing geothermal energy; The thermometer is used for detecting the heat source temperature of the shallow geothermal well; the control module is connected with the thermometer and used for controlling the shallow geothermal well to supply heat to the user side when the heat source temperature of the shallow geothermal well is greater than or equal to the heat supply temperature.
7. The system of claim 6, wherein the system further comprises: The second heat pump is connected between the shallow geothermal well and the user side; The control module is connected with the second heat pump and is used for controlling the second heat pump to heat the heat exchange fluid in the shallow geothermal well when the heat source temperature of the shallow geothermal well is smaller than the heat supply temperature, and heating the user side by utilizing the heat of the heat exchange fluid after the heat exchange fluid is heated.
8. A system according to claim 3, wherein the first regenerator is in communication with the first heat pump via a conduit; The control module is also used for controlling the first heat pump to heat the heat exchange fluid in the first heat accumulator, and heating the user side by utilizing the heat of the heat exchange fluid after the heat exchange fluid is heated.
9. A system according to claim 3, wherein the heat and water storage unit is in communication with the first heat pump via a conduit; the control module is also used for controlling the first heat pump to heat the heat exchange fluid in the heat storage water supply unit and supplying water to the user side by utilizing the heat of the heat exchange fluid after the heat exchange fluid is heated.
10. The system of claim 6, wherein the shallow geothermal well is in communication with both the thermal storage module and the photo-thermal module through a conduit; The control module is also used for controlling the heat storage module and the photo-thermal module to supplement heat to the shallow geothermal well in a valley electricity period of the heat utilization valley period.

Description

Geothermal heating system integrating electricity price response and heat storage scheduling strategy Technical Field The invention relates to a geothermal heating system integrating electricity price response and heat storage scheduling strategies, and belongs to the technical field of geothermal heating. Background The development of geothermal energy system is an important means for promoting energy green transformation, improving energy safety and promoting economic sustainable development. As a clean, stable and renewable energy source, geothermal energy will play an important role in future energy systems. Geothermal energy utilization systems are an important component in energy solutions with their excellent, weather and time independent output power. The deep heat Chu Cengji system has high heat recovering capacity, and the highest heat storing efficiency can reach 80%, so that the reliability and efficiency of the system are further enhanced. However, the existing single geothermal energy heat supply mainly has the problems that resources depend on specific geological conditions, are unevenly distributed and possibly attenuate, early investment is large, operation and maintenance are difficult, economy is poor, improper exploitation can cause environmental problems such as sedimentation and water pollution, and the system regulation capability is weak and is difficult to cope with load fluctuation. Disclosure of Invention The invention provides a geothermal heat supply system integrating electricity price response and heat storage scheduling strategies, which can solve the problems of lower efficiency and poor stability of the existing single geothermal energy heat supply system. The invention provides a geothermal heating system integrating electricity price response and heat storage scheduling strategies, which comprises: a deep geothermal well for providing geothermal energy; the photo-thermal module is used for collecting solar energy and converting the solar energy into heat energy; The temperature reverser comprises an inlet end and a plurality of outlet ends, wherein the deep geothermal well and the photo-thermal module are communicated with the inlet end, and the temperature reverser is used for detecting the temperature of heat exchange fluid flowing into the inlet end and controlling the outflow direction of the heat exchange fluid according to the temperature of the heat exchange fluid; The heat storage module comprises a heat storage heating unit and a heat storage water supply unit which are connected to different outlet ends of the temperature reverser, wherein the heat storage temperature of the heat storage heating unit is higher than that of the heat storage water supply unit, the heat storage heating unit is used for heating a user side, and the heat storage water supply unit is used for supplying water to the user side; the control module is connected with the deep geothermal well, the photo-thermal module, the temperature reverser and the heat storage module, and is used for controlling the deep geothermal well and the photo-thermal module to store heat to the heat storage module in a valley period of a heat utilization low valley period and controlling the heat storage module to release heat to the user side in a peak period of a heat utilization peak period. Optionally, the temperature reverser includes a first outlet end, a second outlet end, and a third outlet end; The heat storage and heating unit comprises a first heat accumulator communicated with the first outlet end and a second heat accumulator communicated with the second outlet end, wherein the heat storage temperature of the first heat accumulator is higher than that of the second heat accumulator; The control module is specifically used for controlling the first heat accumulator and the second heat accumulator to release heat to the user side in sequence in the peak electricity period of the heat utilization peak period. Optionally, the heat storage and heating unit further includes: The first heat pump is communicated with the second heat accumulator and is used for heating heat exchange fluid in the second heat accumulator; one side of the secondary heat accumulator is communicated with the first heat pump, and the other side of the secondary heat accumulator is communicated with the user side and is used for storing heat of heat exchange fluid heated in the first heat pump and heating the user side in a heat use peak period; The control module is connected with the first heat pump and the secondary heat accumulator, and is used for controlling the first heat pump and the secondary heat accumulator to work when the heat storage temperature in the second heat accumulator is smaller than the heat supply temperature and is currently in the valley period. Optionally, the deep geothermal well is communicated with the user terminal through a pipeline, and the temperature reverser is also used for detecting the heat so