A zero-carbon ecosystem for reducing building operation and maintenance costs and a control method thereof

Abstract

The application relates to the technical field of zero carbon, in particular to a zero-carbon ecosystem capable of reducing building operation and maintenance costs and a control method thereof. The zero-carbon ecosystem capable of reducing building operation and maintenance costs comprises the following steps: step 1: taking the period from the end of a municipal power valley period to the end of the next municipal power valley period as a calculation period, and counting the power consumption of each power consumption device of a building in the calculation period as d; step 2: generating power by using a power generation mode that will generate carbon emission rights and supplying power to the building power consumption device, counting the power generation amount a and determining the carbon emission rights as n1; step 3: using a heat source tower heat pump device, using municipal power to store energy for the heat source tower heat pump device in the municipal power valley period, and counting the municipal power consumption amount as b; step 4: determining the carbon consumption index of municipal power as n2, controlling b <= a*n1 / n2, and connecting green power when d > a+b. The zero-carbon ecosystem capable of reducing building operation and maintenance costs and the control method thereof can reduce the building operation and maintenance costs.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of zero carbon, in particular to a zero-carbon ecosystem for reducing building operation and maintenance costs and a control method thereof. BACKGROUND

[0002] Zero carbon refers to offsetting carbon dioxide emissions by using plants or other operations that can generate carbon emission indicators. As for buildings, current buildings mainly use municipal power. Common power generation methods of municipal power include thermal power generation, hydroelectric power generation, wind power generation, and photovoltaic power generation. In some areas, nuclear power generation and photovoltaic power generation are also used. Among the above-mentioned power generation methods, thermal power generation, hydroelectric power generation, and nuclear power generation all calculate carbon consumption indicators, while photovoltaic power generation generates carbon emission rights.

[0003] Most of the current zero-carbon management systems are shown in the photovoltaic power generation and wind power generation comprehensive management system disclosed in CN114336753A, which includes a photovoltaic power generation device power generation monitoring module for monitoring the real-time power generation of the photovoltaic power generation device; a wind power generation device power generation monitoring module for monitoring the real-time power generation of the wind power generation device; a power consumption statistical module for monitoring the historical power consumption of the power consumption side in the historical time period, and estimating the expected power consumption of the power consumption side in the selected time period when the selected time period arrives according to the historical power consumption of the power consumption side in the historical time period; an energy storage device for storing electric energy; a power supply management module for initiating a power supply scheduling application to the off-network power supply device when the sum of the real-time power generation of the photovoltaic power generation device and the real-time power generation of the wind power generation device is less than the expected power consumption in the selected time period, and the electric quantity of the energy storage device cannot cover the gap between the sum of the real-time power generation of the photovoltaic power generation device and the real-time power generation of the wind power generation device and the expected power consumption in the selected time period, wherein the power supply scheduling application includes the difference between the gap and the electric quantity of the energy storage device.

[0004] The above-mentioned management system estimates the expected power consumption according to the historical power consumption in the historical time period, and uses off-network power when there is a gap between the sum of the photovoltaic, wind power generation and the electric quantity of the energy storage device and the expected power generation. In actual implementation, the actual power consumption is often not exactly the same as the expected power consumption. When the actual power consumption is less than the sum of the power generation and the electric quantity of the energy storage device, no scheduling application needs to be initiated, and if the application is initiated in advance, it will cause resource waste. Secondly, when the actual power consumption is greater than the sum of the power generation and the electric quantity of the energy storage device, although it can be used by scheduling off-network power, municipal power is still the common power source. When the scheduled off-network power is municipal power, if the scheduling time is in the peak electricity period, compared with the usual period and the valley period, the electricity cost will be higher in the peak period, which will increase the operation and maintenance cost of the building. SUMMARY

[0005] The application aims to provide a zero-carbon ecosystem and a control method thereof to reduce building operation and maintenance costs.

[0006] To achieve the above-mentioned purpose, the application adopts the following technical scheme: a zero-carbon control method for reducing building operation and maintenance costs, comprising the following steps:

[0007] Step 1: taking the period from the end of the trough period of municipal power to the end of the next trough period as a calculation period, and counting the power consumption of each power-consuming device in the building as d in the calculation period;

[0008] Step 2: generating power by using a power generation method that will generate carbon emission rights and supplying power to the building power-consuming devices, counting the power generation as a and determining the carbon emission rights as n1;

[0009] Step 3: using a heat source tower heat pump device, storing energy for the heat source tower heat pump device by using municipal power in the trough period of municipal power, and counting the municipal power consumption as b;

[0010] Step 4: determining the carbon consumption index of municipal power as n2, controlling b≤a*n1 / n2, and connecting green power supply when d>a+b.

[0011] The beneficial effects of the present scheme are:

[0012] 1. Compared with other power-consuming devices such as lighting lamps and elevators in the building, the power consumption of the refrigeration and heating system in the building is much higher than the sum of the power consumption of other power-consuming devices. In the present scheme, the heat source tower heat pump device is used as the refrigeration and heating system. When the heat source tower heat pump device is used for refrigeration, the temperature of the medium in the heat source tower heat pump device is reduced. Without the need for continuous power consumption to cool the medium, the medium at low temperature can cool the air for a long time to form cold air, thereby cooling the interior of the building. When the heat source tower heat pump device is used for heating, the temperature of the medium in the heat source tower heat pump device is high. Without the need for continuous power consumption to heat the medium, the medium at high temperature can heat the air for a long time to form hot air to heat the interior of the building.

[0013] The heat source tower heat pump device is used for refrigeration or heating in the trough period of municipal power. Currently, buildings such as factories, shopping malls and office buildings usually use industrial power. Compared with the peak period and the flat peak period, the price of industrial power in the trough period is much lower than that in the peak period and the flat peak period. After the heat source tower heat pump device stores energy by using municipal power with a lower unit price in the trough period, the power consumption of the heat source tower heat pump device in the peak period and the flat peak period is sharply reduced, the total electricity price of the building is reduced, and the operation and maintenance cost of the building is reduced.

[0014] 2. The scheme adopts a power generation method that can generate carbon emission rights to generate electricity, which can reduce the amount of municipal electricity and green electricity needed, thereby reducing the electricity price; on the other hand, the carbon emission rights generated during power generation can also be hedged with the carbon consumption index generated by municipal electricity to achieve "zero carbon", which is more conducive to reducing carbon emissions and protecting the environment.

[0015] 3. The scheme takes the period from the end of the trough period of the previous municipal electricity to the end of the next trough period as a calculation period, which is usually 24 hours in actual implementation. Taking photovoltaic power generation as an example, photovoltaic power generation is mainly generated during the day, while the trough period of municipal electricity is at night. Therefore, during a calculation period, the amount of electricity generated during the trough period of municipal electricity can be determined in advance, so that the amount of municipal electricity that can be used during the trough period can be accurately determined based on the amount of electricity generated, avoiding excessive municipal electricity access resulting in carbon emissions greater than zero. Therefore, the scheme can accurately achieve the requirement of "zero carbon".

[0016] Further, step 2 adopts photovoltaic power generation, and n1 is selected as 1065.9.

[0017] The beneficial effects of the scheme are: compared with hydrogen energy, wind energy and other power generation methods, photovoltaic power generation is safer and has lower requirements for the environment and region, and is easy to implement. When using sunlight for photovoltaic power generation, the photovoltaic power generation capacity is first converted into thermal power generation capacity. Currently, the national unified calculation is that 342 grams of standard coal are consumed to generate 1 degree of electricity. The carbon content of the standard coal for thermal power generation is 85%, and carbon combustion produces carbon dioxide emissions. According to the reaction formula C+O2=CO2 and the molecular weight of C is 12 and the molecular weight of CO2 is 44, the carbon dioxide emissions of 1 degree of thermal power generation is calculated as 342*0.85 / 12*44=1068.9g, that is, the carbon consumption index of thermal power generation is 1065.9g_CO2 / kWh. Similarly, the carbon consumption index of nuclear power generation is 11.9g_CO2 / kWh, and the carbon consumption index of hydroelectric power generation is 0.81~12.8g_CO2 / kWh.

[0018] Setting the carbon emission right n1 as 1065.9 can exactly hedge the carbon consumption of municipal electricity, thereby facilitating the allocation of power sources from the perspective of achieving "zero carbon".

[0019] Further, step 4 further includes using municipal electricity to power the heat tower heat pump device during the peak and flat peak periods of municipal electricity when b

[0020] The beneficial effect of the scheme is that when b < a * n1 / n2, it is proved that the total carbon emission right generated by the power generation equipment is greater than the total carbon consumption generated by the municipal power, so at this time, the excess carbon emission right is used to offset the carbon consumption generated by the continued use of the municipal power, so that the building still meets the "zero carbon" requirement in the cycle, and compared with green electricity, the price of municipal electricity is still lower, so it is more beneficial to reduce the building operation and maintenance cost.

[0021] Further, when the municipal power is used to power the heat source tower heat pump device in step 4, only 15-20% of the units in the heat source tower heat pump device are operated during the peak period of the municipal power.

[0022] The beneficial effect of the scheme is that in the case of using the municipal power in the trough period for energy storage, operating part of the units can already meet the basic cooling or heating of the internal space of the building, and reducing the operation of the units can reduce the power consumption of the heat source tower heat pump device, further reducing the cost.

[0023] Further, the medium temperature in the heat source tower heat pump device is controlled to be greater than or equal to 60℃ during energy storage in step 3.

[0024] The beneficial effect of the scheme is that when the heat source tower heat pump device is used for heating the interior of the building, the medium temperature greater than or equal to 60℃ can better store energy.

[0025] Further, the medium temperature in the heat source tower heat pump device is controlled to be less than or equal to 5℃ during energy storage in step 3.

[0026] The beneficial effect of the scheme is that when the heat source tower heat pump device is used for cooling, the medium temperature less than or equal to 5℃ can also better store energy.

[0027] A zero-carbon ecosystem for reducing building operation and maintenance cost includes a heat source tower heat pump device, a power generation equipment and a power consumption management module, the power generation equipment is in communication with the heat source tower heat pump device, and the power generation equipment is in communication with a building power consumption equipment; the heat source tower heat pump device is connected with the municipal power in the municipal power trough period;

[0028] The power consumption management module is used to count the building power consumption equipment power consumption, the heat source tower heat pump device power consumption and the power generation equipment power generation in a calculation period, and when the sum of the heat source tower heat pump device power consumption and the building power consumption equipment power consumption is greater than the power generation equipment power generation, green electricity is connected; the power consumption management module calculates the carbon consumption index according to the carbon emission right generated by the power generation equipment, and determines the amount of municipal power connected in the municipal power trough period according to the power generation mode of the municipal power.

[0029] The beneficial effects of the scheme are that: because the carbon emission rights are generated by the power generation equipment first, and then the municipal power is used in the municipal power valley period, the carbon consumption generated by using the municipal power is hedged by the carbon emission rights, so whether the building realizes "zero carbon" in a calculation period can be more accurately determined, and after realizing "zero carbon", green power is introduced for power supply, green power refers to electric energy generated by a power generation method that generates zero or close to zero carbon dioxide emissions during power generation, such as solar energy, wind power, geothermal energy, etc., so green power does not calculate carbon indicators, and introducing green power will not damage the "zero carbon" of the building, so it can ensure that the building realizes "zero carbon" in a calculation period without complex calculation.

[0030] Further, the power generation equipment is any one or both of a photovoltaic power generation equipment and a wind power generation equipment.

[0031] The beneficial effects of the scheme are that: photovoltaic power generation and wind power generation are safer, and can be used in a wider area. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a power distribution diagram of an embodiment of the application;

[0033] Figure 2 is a logic flow diagram of a power consumption management module of an embodiment of the application. DETAILED DESCRIPTION

[0034] The following will be further described in detail through specific embodiments:

[0035] EMBODIMENT

[0036] The embodiment discloses a zero-carbon control method for reducing building operation and maintenance costs, which combines Figure 1 and Figure 2 as shown, comprising the following steps:

[0037] Step 1: taking the end of the municipal power valley period to the end of the next valley period as a calculation period, and counting the power consumption of each power consumption equipment of the building in a calculation period as d;

[0038] Step 2: generating power by using a power generation method that will generate carbon emission rights and supplying power to the building power consumption equipment, counting the power generation amount a and determining the carbon emission rights as n1, specifically, the embodiment uses photovoltaic power generation, and n1 is selected as 1065.9;

[0039] Step 3: using a heat source tower heat pump device to store energy for the heat source tower heat pump device by using municipal power in the municipal power valley period, heating the temperature of the medium in the heat source tower heat pump device to greater than or equal to 60 DEG C when the heat source tower heat pump device supplies heating for the building, and cooling the temperature of the medium in the heat source tower heat pump device to less than or equal to 5 DEG C when the heat source tower heat pump device supplies refrigeration for the building, and counting the municipal power consumption as b;

[0040] Step 4: the carbon consumption index of the municipal power is determined as n2, the control b <= a*n1 / n2, and b < a*n1 / n2, the municipal power is used to power the heat source tower heat pump device during the peak and flat peak period of the municipal power, and only 15-20% of the units in the heat source tower heat pump device are operated during the peak period of the municipal segment; when d > a + b, green power is connected to power the heat source tower heat pump device and other power-consuming equipment in the building except the heat source tower heat pump device.

[0041] The application also discloses a zero-carbon ecosystem for reducing building operation and maintenance costs, comprising a heat source tower heat pump device, a photovoltaic power generation device and a power consumption management module, the photovoltaic power generation device is communicated with the heat source tower heat pump device, and the photovoltaic power generation device is communicated with building power-consuming equipment; the heat source tower heat pump device is connected with the municipal power during the municipal power valley period;

[0042] The power consumption management module is used for counting the power consumption of the building power-consuming equipment, the power consumption of the heat source tower heat pump device and the power generation of the photovoltaic power generation device in a calculation period, and green power is connected when the sum of the power consumption of the heat source tower heat pump device and the building power-consuming equipment is greater than the power generation of the photovoltaic power generation device; the power consumption management module calculates the carbon consumption index according to the carbon emission right generated by the power generation of the photovoltaic power generation device, and determines the amount of municipal power connected during the municipal power valley period according to the power generation mode of the municipal power.

[0043] The above is only an embodiment of the application, and common technical solutions and / or properties in the scheme are not described in detail. It should be noted that for those skilled in the art, without departing from the technical solutions of the application, some modifications and improvements can be made, which should also be considered as the protection scope of the application, and these will not affect the effect and practicality of the application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A zero-carbon control method for reducing building operation and maintenance costs, characterized in that: Includes the following steps: Step 1: Take the period from the end of the municipal electricity off-peak period to the end of the next off-peak period as a calculation cycle, and count the electricity consumption of each electrical device in the building within one calculation cycle as d; Step 2: Generate electricity using a method that generates carbon emission rights and supply power to the building's electrical equipment, calculate the electricity generation 'a' and determine the carbon emission rights as 'n1'; Step 3: Use a heat source tower heat pump device to store energy for the heat source tower heat pump device during off-peak hours of municipal electricity, and calculate the municipal electricity consumption as b. Step 4: Determine the carbon consumption index of municipal electricity as n2, control b≤a*n1 / n2, and connect green electricity supply when d>a+b.

2. The zero-carbon control method for reducing building operation and maintenance costs according to claim 1, characterized in that: Step 2 uses photovoltaic power generation, and n1 is selected as 1065.

9.

3. The zero-carbon control method for reducing building operation and maintenance costs according to claim 1, characterized in that: Step 4 also includes supplying power to the heat source tower heat pump unit with municipal electricity during at least one of the peak and off-peak periods when b < a*n1 / n2.

4. The zero-carbon control method for reducing building operation and maintenance costs according to claim 3, characterized in that: When using municipal electricity to power the heat pump unit in step 4, only 15% to 20% of the units in the heat pump unit will be operated during peak hours of municipal electricity.

5. The zero-carbon control method for reducing building operation and maintenance costs according to claim 1, characterized in that: In step 3, during energy storage, the temperature of the medium in the heat source tower heat pump device is controlled at greater than or equal to 60℃.

6. The zero-carbon control method for reducing building operation and maintenance costs according to claim 1, characterized in that: In step 3, during energy storage, the temperature of the medium in the heat source tower heat pump device is controlled to be less than or equal to 5℃.

7. A zero-carbon ecosystem employing a zero-carbon control method for reducing building operation and maintenance costs as described in any one of claims 1, 3, 4, 5, and 6, characterized in that: It includes a heat source tower heat pump unit, a power generation device, and a power management module. The power generation device is connected to the heat source tower heat pump unit and is also connected to building power consumption equipment. The heat source tower heat pump unit is connected to municipal power during off-peak hours. The electricity management module is used to statistically analyze the electricity consumption of building power-consuming equipment, the electricity consumption of heat source tower heat pump devices, and the power generation of power generation equipment within a calculation cycle. When the sum of the electricity consumption of heat source tower heat pump devices and the electricity consumption of building power-consuming equipment is greater than the power generation of power generation equipment, green electricity is connected. The electricity management module calculates carbon consumption indicators based on the carbon emission rights generated by power generation equipment and determines the amount of municipal electricity connected during the off-peak hours of municipal electricity based on the power generation mode of municipal electricity.

8. A zero-carbon ecosystem for reducing building operation and maintenance costs according to claim 7, characterized in that: The power generation equipment can be any one or both of photovoltaic power generation equipment and wind power generation equipment.

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