Carnot cycle peak regulation system and method coupled with heat supply system

Abstract

The invention provides a Carnot cycle peak regulation system and method coupled with a heat supply system. The Carnot cycle peak regulation system comprises a coal-fired power generation unit, a Carnot cycle peak regulation unit and a heat supply unit, and the coal-fired power generation unit is used for providing a heat source for the heat supply unit; the Carnot cycle peak regulation unit is used for providing a heat source for the heat supply unit and the coal-fired power generation unit and is used for realizing peak regulation of a point power grid; according to the invention, the Carnot cycle peak shaving unit is used for heating the circulating water of the heat supply network for the first time, so that the heating steam extraction amount is reduced, the heat supply energy consumption of the unit is reduced, the power grid peak shaving effect is achieved, and the method becomes an effective way for improving the overall operation efficiency of the thermal power generating unit.

Description

Technical Field

[0001] The invention belongs to the field of comprehensive utilization of thermal energy, and relates to a Carnot cycle peak regulation system and method coupled with a heating system. Background Art

[0002] With the adjustment of the global energy structure and the increase in environmental protection needs, renewable energy power generation represented by wind and solar energy has developed rapidly. This type of renewable energy is characterized by volatility and intermittency, and is easily affected by external factors such as climate and seasons. The power output is unstable and difficult to control accurately. This feature has brought huge challenges to the safe operation of the power grid, especially when a high proportion of renewable energy is connected to the grid. The demand for peak load regulation and valley filling in the power system has increased significantly to balance the gap between supply and demand and ensure the stability of the power grid.

[0003] Currently, in thermal power generation systems, peak-shaving technologies coupled with heat sources and cold sources are gradually becoming an important means to meet this demand. Traditional peak-shaving technologies coupled with heat sources and cold sources (such as heat storage boilers and heat pump systems) usually require multiple devices to store and release heat, which in turn requires complex control systems. Summary of the invention

[0004] The purpose of the present invention is to provide a Carnot cycle peak-shaving system and method coupled with a heating system, which solves the defect of complex structure of the peak-shaving technology traditionally used in thermal power generation systems.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: The present invention provides a Carnot cycle peak-shaving system coupled with a heating system, comprising a coal-fired power generation unit, a Carnot cycle peak-shaving unit, and a heating unit, wherein: The coal-fired generator set is used to provide a heat source to the heating unit; The Carnot cycle peak-shaving unit is used to provide a heat source to the heating unit and the coal-fired power generation unit, so as to achieve peak-shaving of the point power grid.

[0006] Preferably, the heating unit includes a heating network heater, wherein the cold source inlet on the heating network heater is connected to the heating network circulating water return pipeline; the cold source outlet on the heating network heater is connected to the heating network circulating water supply pipeline, and the heat source on the heating network heater is connected to the exhaust port of the coal-fired power generation unit.

[0007] Preferably, a first valve is provided on the connecting pipeline between the heat source on the heating network heater and the exhaust port of the coal-fired generator set.

[0008] Preferably, the Carnot cycle peak shaving unit includes an air compressor and a Carnot cycle heat exchanger, wherein the air outlet of the air compressor is connected to the heat source inlet of the Carnot cycle heat exchanger, the cold source inlet of the Carnot cycle heat exchanger is connected to the circulating water return pipeline of the heat network, and the cold source outlet of the Carnot cycle heat exchanger is connected to the inlet of the heating unit.

[0009] Preferably, the cold source inlet of the Carnot cycle heat exchanger is also connected to the condensate outlet of the coal-fired generator set, and the cold source outlet of the Carnot cycle heat exchanger is connected to the inlet of the condensate heating component in the coal-fired generator set.

[0010] Preferably, the cold source outlet of the Carnot cycle heat exchanger is connected to the second generator through an expander.

[0011] Preferably, the coal-fired power generation unit includes a boiler, a turbine assembly, a condenser and a condensate heating assembly, wherein the steam outlet of the boiler is connected to the steam inlet of the turbine assembly, the exhaust port of the turbine assembly is connected to the condenser, and the exhaust steam outlet of the turbine assembly is connected to the heat source inlet of the heating unit; the condensate outlet of the condenser is divided into two paths, one path is connected to the cold source inlet of the Carnot cycle peak-shaving unit, and the other path is connected to the cold source inlet of the condensate heating assembly, and the cold source outlet of the Carnot cycle peak-shaving unit is connected to the cold source inlet of the condensate heating assembly.

[0012] A Carnot cycle peak shaving method coupled with a heating system, based on the peak shaving unit, comprises the following steps: During the heating season, open the valve between the heat network circulating water return pipeline and the Carnot cycle peak-shaving unit, and close the valve between the heat network circulating water return pipeline and the heating system; The return water of the heat network circulating water enters the Carnot cycle peak-shaving unit for the first heating. The heated heat network circulating water is sent to the heating system for heat exchange with the exhaust steam of the coal-fired generator set. The heat network circulating water after heat exchange is sent to the heating users. The condensate of the coal-fired generator set is sent to the Carnot cycle peak load regulation unit for heating and then sent to the water supply inlet of the coal-fired generator set to heat the water supply of the coal-fired generator set; During the non-heating season, close the valve between the heat network circulating water and the Carnot cycle peak-shaving unit, and close the valve between the coal-fired generator set and the heating system; The condensate of the coal-fired generator set is sent to the Carnot cycle peak-shaving unit for heating and then sent to the water feed inlet of the coal-fired generator set to heat the water feed of the coal-fired generator set.

[0013] Preferably, during the heating season, the external environment temperature is obtained. When the external environment temperature is less than the set value, the valve between the heat network circulating water return pipeline and the Carnot cycle peak shaving unit is closed, and the valve between the heat network circulating water return pipeline and the heating system is opened, and the Carnot cycle peak shaving unit stops working; The return water of the heat network circulating water enters the heating system to exchange heat with the exhaust steam of the coal-fired generator set. The heat network circulating water after heat exchange is delivered to the heating users.

[0014] Preferably, in the non-heating season, when power generation needs to be reduced, the Carnot cycle peak-shaving unit stops working, and the condensate discharged from the condenser is sent to the condensate heating assembly for heating, and then sent to the boiler.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a Carnot cycle peak-shaving system coupled with a heating system, wherein circulating return water from the heating network first enters a Carnot cycle peak-shaving unit for heat exchange and temperature rise, and then enters a coal-fired generator set for secondary heating to a temperature required for external heat supply; in this process, the Carnot cycle peak-shaving unit is used to perform a first heating of circulating water from the heating network, thereby reducing the amount of steam extracted for heating and reducing the heating energy consumption of the unit, thereby achieving the effect of peak-shaving of the power grid; at the same time, the condensate of the coal-fired generator set is heated by the Carnot cycle peak-shaving unit and then sent to the coal-fired generator set to reduce the heating load of the boiler feed water, thereby saving fuel and improving the overall thermal efficiency of the system; therefore, this system becomes an effective way to improve the overall operating efficiency of thermal power units. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the system structure of the present invention.

[0017] Among them: 1- boiler; 2- high-pressure cylinder; 3- medium-pressure cylinder; 4- low-pressure cylinder; 5- the first generator; 6- condenser; 7- condensate pump; 8- the first low-pressure heater; 9- the second low-pressure heater; 10- feed water pump; 11- high-pressure heater; 12- heat network heater; 13- the first valve group; 14- the second valve group; 15- the third valve group; 16- the fourth valve group; 17- the fifth valve group; 18- the sixth valve group; 19- air compressor; 20- Carnot cycle heat exchanger; 21- expander; 22- the second generator. DETAILED DESCRIPTION

[0018] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0019] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0020] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0021] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0022] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0023] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0024] Example 1 See also Figure 1 The present embodiment provides a Carnot cycle peak-shaving system coupled with a heating system, comprising a coal-fired power generation unit, a Carnot cycle peak-shaving unit, and a heating unit, wherein: The coal-fired generator set is used to provide a heat source to the heating unit; The Carnot cycle peak-shaving unit is used to provide a heat source to the heating unit and the coal-fired power generation unit, so as to achieve peak-shaving of the point power grid.

[0025] The working process of this embodiment: When the heating season begins, the circulating return water from the heat network first enters the Carnot cycle peak-shaving unit for heat exchange and heating, and then enters the coal-fired power generation unit for secondary heating to the temperature required for external heat supply. This process uses the Carnot cycle peak-shaving unit to perform the first heating of the circulating water in the heat network, thereby reducing the amount of steam extracted for heating and the heating energy consumption of the unit, thereby achieving the effect of peak-shaving of the power grid.

[0026] Example 2 Based on Example 1, this embodiment provides a Carnot cycle peak-shaving system coupled to a heating system, wherein the heating unit includes a heating network heater, wherein the cold source inlet on the heating network heater is connected to the heating network circulating water return pipeline; the cold source outlet on the heating network heater is connected to the heating network circulating water supply pipeline, and the heat source on the heating network heater is connected to the exhaust port of a coal-fired power generation unit.

[0027] Example 3 Based on Example 1, this embodiment provides a Carnot cycle peak-shaving system coupled to a heating system, wherein the Carnot cycle peak-shaving unit includes an air compressor and a Carnot cycle heat exchanger, wherein the air outlet of the air compressor is connected to the heat source inlet of the Carnot cycle heat exchanger, the cold source inlet of the Carnot cycle heat exchanger is connected to the circulating water return pipeline of the heating network, and the cold source outlet of the Carnot cycle heat exchanger is connected to the inlet of the heating unit.

[0028] The cold source inlet of the Carnot cycle heat exchanger is also connected to the condensate outlet of the coal-fired generator set, and the cold source outlet of the Carnot cycle heat exchanger is connected to the inlet of the condensate heating component in the coal-fired generator set.

[0029] Example 4 On the basis of Example 1, this embodiment provides a Carnot cycle peak-shaving system coupled with a heating system, wherein the coal-fired power generation unit includes a boiler, a turbine assembly, a condenser and a condensate heating assembly, wherein the steam outlet of the boiler is connected to the steam inlet of the turbine assembly, the exhaust port of the turbine assembly is connected to the condenser, and the exhaust steam outlet of the turbine assembly is connected to the heat source inlet of the heating unit; the condensate outlet of the condenser is divided into two paths, one path is connected to the cold source inlet of the Carnot cycle peak-shaving unit, and the other path is connected to the cold source inlet of the condensate heating assembly, and the cold source outlet of the Carnot cycle peak-shaving unit is connected to the cold source inlet of the condensate heating assembly.

[0030] The condensate heating assembly includes a first low-pressure heater 8, a second low-pressure heater 9, a feedwater pump 10 and a high-pressure heater 11, wherein: The condensate outlet of the condenser 6 is connected to the water inlet of the first low-pressure heater 8 through the condensate pump 7, the water outlet of the first low-pressure heater 8 is connected to the water inlet of the second low-pressure heater 9, the water outlet of the second low-pressure heater 9 is connected to the water inlet of the high-pressure heater 11 through the feed water pump 10, and the water outlet of the high-pressure heater 11 is connected to the water inlet of the boiler 1.

[0031] In this embodiment, the condensate discharged from the three heater condensers 6 is heated to reduce the heating load of the boiler feed water, thereby saving fuel and improving the overall thermal efficiency of the system.

[0032] Example 5 This embodiment provides a Carnot cycle peak-shaving system coupled with a heating system, wherein the coal-fired power generation unit includes a boiler 1, a high-pressure cylinder 2, a medium-pressure cylinder 3, a low-pressure cylinder 4, a first generator 5, a condenser 6, a condensate pump 7, a first low-pressure heater 8, a second low-pressure heater 9, a feedwater pump 10, a high-pressure heater 11, a heating network heater 12 and a first valve group 13, wherein: The main steam outlet of the boiler 1 is connected to the steam inlet of the high-pressure cylinder 2, and the exhaust steam outlet of the high-pressure cylinder 2 is connected to the steam inlet of the boiler.

[0033] The reheat steam outlet of the boiler 1 is connected to the steam inlet of the intermediate pressure cylinder 3, and the exhaust steam outlet of the intermediate pressure cylinder 3 is divided into two paths, one of which is connected to the steam inlet of the low pressure cylinder 4, and the other is connected to the heat source inlet of the heat network heater 12 through the first valve group 13.

[0034] The cold source inlet on the heating network heater 12 is connected to the heating network circulating water return pipeline; the cold source outlet on the heating network heater 12 is connected to the heating network circulating water supply pipeline.

[0035] The exhaust steam outlet of the low-pressure cylinder 4 is connected to the water inlet of the first low-pressure heater 8 through the condenser 6 and the condensate pump 7. The water outlet of the first low-pressure heater 8 is connected to the water inlet of the second low-pressure heater 9. The water outlet of the second low-pressure heater 9 is connected to the water inlet of the high-pressure heater 11 through the feed water pump 10. The water outlet of the high-pressure heater 11 is connected to the water inlet of the boiler 1. The condensate discharged from the three heater condensers 6 is heated to reduce the heating load of the boiler feed water, thereby saving fuel and improving the overall thermal efficiency of the system.

[0036] The Carnot cycle peak shaving unit comprises an air compressor 19, a Carnot cycle heat exchanger 20, an expander 21 and a second generator, wherein: The heat network circulating water return pipeline is divided into two paths, one path is connected to the cold source inlet of the Carnot cycle heat exchanger 20 through the third valve group 15, and the other path is connected to the cold source inlet of the heat network heater 12 through the second valve group 14.

[0037] The cold source outlet of the Carnot cycle heat exchanger 20 is connected to the cold source inlet of the heating network heater 12 through the fourth valve group 16 .

[0038] The air inlet of the Carnot cycle heat exchanger 20 is connected to the air compressor 19 , and the air outlet of the Carnot cycle heat exchanger 20 is connected to the atmosphere.

[0039] The cold source inlet of the Carnot cycle heat exchanger 20 is connected to the condensate outlet of the condenser 6 through the fifth valve group 17 .

[0040] The cold source outlet of the Carnot cycle heat exchanger 20 is connected to the water inlet of the second low-pressure heater 9 through the sixth valve group 18 .

[0041] The cold source outlet of the Carnot cycle heat exchanger 20 is connected to the second generator through the expander 21 .

[0042] Example 6 This embodiment provides a Carnot cycle peak load regulation method coupled with a heating system, comprising the following steps: During the heating season, open the valve between the heat network circulating water return pipeline and the Carnot cycle peak-shaving unit, and close the valve between the heat network circulating water return pipeline and the heating system; The return water of the heat network circulating water enters the Carnot cycle peak-shaving unit for the first heating. The heated heat network circulating water is sent to the heating system for heat exchange with the exhaust steam of the coal-fired generator set. The heat network circulating water after heat exchange is sent to the heating users. The condensate of the coal-fired generator set is sent to the Carnot cycle peak load regulation unit for heating and then sent to the water supply inlet of the coal-fired generator set to heat the water supply of the coal-fired generator set; Obtain the external environment temperature. When the external environment temperature is lower than the set value, close the valve between the heat network circulating water return pipeline and the Carnot cycle peak shaving unit, open the valve between the heat network circulating water return pipeline and the heating system, and the Carnot cycle peak shaving unit stops working; The return water of the heat network circulating water enters the heating system to exchange heat with the exhaust steam of the coal-fired generator set. The heat network circulating water after heat exchange is delivered to the heating users.

[0043] During the non-heating season, close the valve between the heat network circulating water and the Carnot cycle peak-shaving unit, and close the valve between the coal-fired generator set and the heating system; The condensate of the coal-fired generator set is sent to the Carnot cycle peak-shaving unit for heating and then sent to the water feed inlet of the coal-fired generator set to heat the water feed of the coal-fired generator set.

[0044] During the non-heating season, when power generation needs to be reduced, the Carnot cycle peak-shaving unit stops working and the condensate discharged from the condenser is sent to the condensate heating assembly for heating and then sent to the boiler.

[0045] Example 7 This embodiment provides a Carnot cycle peak load regulation method coupled with a heating system, comprising the following steps: The high-temperature and high-pressure steam at the outlet of boiler 1 enters the high-pressure cylinder 2 to perform work and then returns to boiler 1 for secondary heating to form reheated steam. The reheated steam enters the medium-pressure cylinder 3 and the low-pressure cylinder 4 in turn to expand and perform work, thereby driving the first generator 5 to generate electricity.

[0046] The exhaust steam from the low-pressure cylinder 4 enters the condenser 6 for condensation and is pressurized by the condensate pump 7. It is then heated by the first low-pressure heater 8 and the second low-pressure heater 9 in turn, and then pressurized by the feed water pump 10. It is heated by the high-pressure heater 11 and then returns to the boiler 1, completing the steam-water cycle of the coal-fired unit.

[0047] During the heating season, the first valve group 13, the third valve group 15 and the fourth valve group 16 are opened, and the second valve group 14, the fifth valve group 17 and the sixth valve group 18 are closed; The return water of the heat network circulating water first enters the Carnot cycle heat exchanger 20, absorbs the air compression heat and heats up, and then enters the heat network heater 12 for secondary heating to the temperature required for external heat supply. The air compression heat is used to perform preliminary heating on the heat network circulating water, thereby reducing the amount of steam extraction for heating and the heating energy consumption of the unit, thereby achieving indirect peak regulation of the power grid.

[0048] The external ambient temperature is obtained in real time. When the external ambient temperature is lower than the set value, the third valve 15 and the fourth valve group 16 are closed, the second valve group 14 is opened, and the Carnot cycle peak-shaving unit stops working; the return water of the heat network circulating water directly enters the heat network heater 12, and is heated to the heating temperature by the steam extraction of the coal-fired generator set before being supplied to the outside.

[0049] The return water of the heat network circulating water enters the heating system to exchange heat with the exhaust steam of the coal-fired generator set. The heat network circulating water after heat exchange is delivered to the heating users.

[0050] In the non-heating season, the first valve group 13, the second valve group 14, the third valve group 15 and the fourth valve group 16 are closed, and the fifth valve group 17 and the sixth valve group 18 are opened; A portion of the condensate at the outlet of the condensate pump 7 is led to the Carnot cycle heat exchanger 20, and after absorbing the air compression heat and heating up, it returns to the inlet of the second low-pressure heater 9. The air compression heat is used to heat part of the condensate, reducing the steam extraction amount of the first low-pressure heater 8 and reducing the energy consumption of the unit.

[0051] In the non-heating season, and when power generation needs to be reduced, the first valve group 13, the second valve group 14, the third valve group 15, the fourth valve group 16, the fifth valve group 17 and the sixth valve group 18 are closed, the Carnot cycle peak-shaving unit stops working, and the condensate discharged from the condenser is sent to the condensate heating assembly for heating, and then sent to the boiler.

[0052] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A Carnot cycle peak load regulation system coupled with a heating system, characterized in that: It includes coal-fired power generation units, Carnot cycle peak load regulation units, and heating units, including: The coal-fired generator set is used to provide a heat source to the heating unit; The Carnot cycle peak-shaving unit is used to provide a heat source to the heating unit and the coal-fired power generation unit, so as to achieve peak-shaving of the point power grid.

2. A Carnot cycle peak load regulation system coupled with a heating system according to claim 1, characterized in that: The heating unit includes a heating network heater, wherein a cold source inlet on the heating network heater is connected to a heating network circulating water return pipeline; a cold source outlet on the heating network heater is connected to a heating network circulating water supply pipeline, and a heat source on the heating network heater is connected to an exhaust port of a coal-fired power generation unit.

3. A Carnot cycle peak load regulation system coupled with a heating system according to claim 2, characterized in that: A first valve is arranged on the connecting pipeline between the heat source on the heating network heater and the exhaust port of the coal-fired generator set.

4. The Carnot cycle peak load regulation system coupled with a heating system according to claim 1, characterized in that: The Carnot cycle peak shaving unit includes an air compressor and a Carnot cycle heat exchanger, wherein the air outlet of the air compressor is connected to the heat source inlet of the Carnot cycle heat exchanger, the cold source inlet of the Carnot cycle heat exchanger is connected to the circulating water return pipeline of the heat network, and the cold source outlet of the Carnot cycle heat exchanger is connected to the inlet of the heating unit.

5. A Carnot cycle peak load regulation system coupled with a heating system according to claim 4, characterized in that: The cold source inlet of the Carnot cycle heat exchanger is also connected to the condensate outlet of the coal-fired generator set, and the cold source outlet of the Carnot cycle heat exchanger is connected to the inlet of the condensate heating component in the coal-fired generator set.

6. A Carnot cycle peak load regulation system coupled with a heating system according to claim 4, characterized in that: The cold source outlet of the Carnot cycle heat exchanger is connected to the second generator through an expander.

7. The Carnot cycle peak load regulation system coupled with a heating system according to claim 1, characterized in that: The coal-fired power generation unit includes a boiler, a turbine assembly, a condenser and a condensate heating assembly, wherein the steam outlet of the boiler is connected to the steam inlet of the turbine assembly, the exhaust port of the turbine assembly is connected to the condenser, and the exhaust steam outlet of the turbine assembly is connected to the heat source inlet of the heating unit; the condensate outlet of the condenser is divided into two paths, one path is connected to the cold source inlet of the Carnot cycle peak-shaving unit, and the other path is connected to the cold source inlet of the condensate heating assembly, and the cold source outlet of the Carnot cycle peak-shaving unit is connected to the cold source inlet of the condensate heating assembly.

8. A Carnot cycle peak load regulation method coupled with a heating system, characterized in that: The peak shaving unit according to any one of claims 1 to 7 comprises the following steps: During the heating season, open the valve between the heat network circulating water return pipeline and the Carnot cycle peak-shaving unit, and close the valve between the heat network circulating water return pipeline and the heating system; The return water of the heat network circulating water enters the Carnot cycle peak-shaving unit for the first heating. The heated heat network circulating water is sent to the heating system for heat exchange with the exhaust steam of the coal-fired generator set. The heat network circulating water after heat exchange is sent to the heating users. The condensate of the coal-fired generator set is sent to the Carnot cycle peak load regulation unit for heating and then sent to the water supply inlet of the coal-fired generator set to heat the water supply of the coal-fired generator set; During the non-heating season, close the valve between the heat network circulating water and the Carnot cycle peak-shaving unit, and close the valve between the coal-fired generator set and the heating system; The condensate of the coal-fired generator set is sent to the Carnot cycle peak-shaving unit for heating and then sent to the water feed inlet of the coal-fired generator set to heat the water feed of the coal-fired generator set.

9. A Carnot cycle peak load regulation method coupled with a heating system according to claim 8, characterized in that: In the heating season, the external environment temperature is obtained. When the external environment temperature is lower than the set value, the valve between the heat network circulating water return pipe and the Carnot cycle peak shaving unit is closed, and the valve between the heat network circulating water return pipe and the heating system is opened, and the Carnot cycle peak shaving unit stops working; The return water of the heat network circulating water enters the heating system to exchange heat with the exhaust steam of the coal-fired generator set. The heat network circulating water after heat exchange is delivered to the heating users.

10. A Carnot cycle peak load regulation method coupled with a heating system according to claim 8, characterized in that: In the non-heating season, when power generation needs to be reduced, the Carnot cycle peak-shaving unit stops working and the condensate discharged from the condenser is sent to the condensate heating component for heating and then sent to the boiler.

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