CN115796447A - Greenhouse gas emission reduction calculation method and system for operating virtual power plant - Google Patents
Greenhouse gas emission reduction calculation method and system for operating virtual power plant Download PDFInfo
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Abstract
The invention discloses a method and a system for calculating the emission reduction of greenhouse gases in a virtual power plant. The method of the invention comprises the following steps: identifying a virtual power plant, determining a boundary of the virtual power plant, and determining a greenhouse gas source contained in the virtual power plant; determining a reference line scene, and determining a greenhouse gas source contained in the reference line; calculating the greenhouse gas emission amount of the virtual power plant according to the greenhouse gas source contained in the virtual power plant; calculating the greenhouse gas emission amount of the reference line according to the greenhouse gas source contained in the reference line; and calculating the emission reduction amount of the greenhouse gas of the virtual power plant according to the emission amount of the greenhouse gas of the virtual power plant and the emission amount of the reference line greenhouse gas. The invention can specifically quantify the greenhouse gas emission reduction of the virtual power plant, and solves the problem of the calculation loss of the greenhouse gas emission reduction which is urgently needed in the industry.
Description
Technical Field
The invention belongs to the technical field of virtual power plants, and particularly relates to a greenhouse gas emission reduction calculation method and system for operating a virtual power plant.
Background
Virtual plant definition: the coordination control technology, the intelligent metering technology and the information communication technology are used as a power supply coordination management system for a special power plant to participate in the operation of a power market and a power grid, and the aggregation and coordination optimization of distributed energy sources such as a distributed power supply, an energy storage system, a controllable load and an electric vehicle can be realized (from 'electric power internet of things terminology' (Q/GDW 12098-2021)).
Common virtual power plants as shown in fig. 1, the term "virtual power plant" was sourced from the "virtual utility" written by mormon ahwerbuch in 1997: description, technology and competitiveness of emerging industries the definition of virtual utilities in book is as follows: virtual utilities are a flexible collaboration between independent and market-driven entities that can provide consumers with the efficient electrical energy services they need without having to own the corresponding assets. Just as the virtual public facilities provide consumer-oriented electric energy services by using emerging technologies, the virtual power plant does not change the grid-connected mode of each Distributed Generator (DG), but aggregates Distributed Energy Resources (DERs) of different types such as DG, energy storage systems, controllable loads, electric vehicles and the like by advanced technologies such as control, metering, communication and the like, and realizes the coordinated optimization operation of a plurality of DERs through a higher-level software framework, thereby being more beneficial to the reasonable optimization configuration and utilization of resources. The virtual power plant is not a real power plant, and through the advanced Internet of things, 5G communication and big data technology, the virtual power plant has more aggregation points, wide range and small monomer capacity, and can adjust resources by users. The virtual power plant as a whole participates in regulation and control of an electric power market and a power distribution system operator, realizes coordinated operation control of each DER internally, and interacts with users, equipment maintenance managers and other participants. The virtual power plant realizes the management of DER and the interaction between upstream and downstream through software, participates in the operation of a power grid, and provides services such as peak clipping and valley filling, demand side response, peak shaving, frequency modulation, standby and the like.
The virtual power plant and the demand side response are similar, the essential connotation is also consistent, and particularly, when the virtual power plant participates in the demand response of the daily invitation to achieve the purpose of peak clipping, the surface characteristics are similar. In fact, in a broad sense, a virtual power plant is an extended version of demand side response, and the demand side response is mainly peak clipping and mainly aims at user load; the virtual power plant gives consideration to peak clipping and valley filling, and part of the virtual power plant has energy storage characteristics including source, network, load and storage. Compared with the regulation mode of demand response, the virtual power plant has more diversified users such as energy storage, distributed power generation, controllable load and the like, when the users participate in regulation, the users on the load side can regulate the increase and decrease of the power consumption of the users, and the users on the energy storage side and the power supply side can be summoned to regulate the electric energy output, so that the regulation mode and means are rich. According to the external characteristics of the virtual power plant, the virtual power plants with different types of characteristics have different service capacities. What the concept of the virtual power plant emphasizes is the function and effect presented to the outside, the operation idea is updated, social and economic benefits are generated, and the basic application scene is the power market. The method can aggregate DER to stably transmit power to a public network without modifying a power grid, provides auxiliary service with quick response, becomes an effective method for adding DER into a power market, reduces the unbalance risk of independent operation in the market, and can obtain the benefit of scale economy. Meanwhile, the DER visualization and the coordination control optimization of the virtual power plant greatly reduce the impact of the traditional DER grid connection on a public network, reduce the scheduling difficulty caused by DG growth, enable the power distribution management to be more reasonable and orderly and improve the stability of system operation. The virtual power plant can be considered as a power supply coordination management system for a special power plant to participate in the operation of a power market and a power grid by realizing the aggregation and coordination optimization of DER (distributed generation) such as DG (distributed generation), an energy storage system, controllable loads, electric vehicles and the like through an advanced information communication technology and a software system.
Virtual power plant is the integration of physical information economy to virtual power plant can guarantee as the energy management system of node that whole power system obtains more safe and stable's operation, and virtual power plant compares traditional little electric wire netting and has absolute advantage, and virtual power plant can not receive the control in time and place, carries out effectual arrangement and collection to data information at any time. The dispatching optimization characteristic of the virtual power plant is the most important characteristic of the virtual power plant in the development process, distributed energy sources can be effectively aggregated, and recombination can be carried out according to the current specific development conditions, and the advantages are not possessed by the traditional power plant and the micro-grid.
In addition, the virtual power plant can also absorb more low-carbon power supplies (such as wind power, photovoltaic and the like), the power consumption of the internal load assembly is promoted to be reduced, the comprehensive energy storage efficiency of the energy storage assembly is improved, the power loss in the energy storage process is reduced, energy conservation and emission reduction are effectively realized, good environmental benefits and social benefits are achieved, but specific calculation methods are lacked at present for the greenhouse gas emission reduction amount of the virtual power plant.
Disclosure of Invention
The technical problem to be solved by the present invention is to overcome the defects existing in the prior art, and provide a method and a system for calculating the greenhouse gas emission reduction amount of a virtual power plant, which can specifically quantify the greenhouse gas emission reduction amount of the virtual power plant, so as to solve the problem of greenhouse gas emission reduction amount calculation deficiency urgently needed in the industry.
Therefore, the invention adopts a technical scheme that: a greenhouse gas emission reduction calculation method for operating a virtual power plant, comprising:
identifying a virtual power plant, determining a boundary of the virtual power plant, and determining a greenhouse gas source contained in the virtual power plant;
determining a reference line scene, and determining a greenhouse gas source contained in the reference line;
calculating the greenhouse gas emission amount of the virtual power plant according to the greenhouse gas source contained in the virtual power plant;
calculating the greenhouse gas emission amount of the reference line according to the greenhouse gas source contained in the reference line;
and calculating the emission reduction amount of the greenhouse gas of the virtual power plant according to the emission amount of the greenhouse gas of the virtual power plant and the emission amount of the reference line greenhouse gas.
Further, the reference line scene refers to a scene in which facilities and equipment in the virtual power plant operate according to a state before the virtual power plant is formed.
Further, in order to simplify the calculation, in a non-response period, except for the virtual power plant main control platform, the running states of all facilities and equipment of the virtual power plant in operation are the same as the reference line scene, and the emission of all facilities and equipment except the virtual power plant main control platform in the non-response period is not considered when the emission of the virtual power plant and the emission of the reference line are calculated;
the greenhouse gas emission amount of the virtual power plant comprises the emission generated by the power consumption consumed by the operation of the virtual power plant main control platform in the boundary of the virtual power plant and the sum of the operation emission of other facilities and equipment in the virtual power plant in each response period, and the specific calculation is shown in the following formula:
in the formula, PE y The emission of greenhouse gases of a virtual power plant in the y year is in tons of carbon dioxide; PE (polyethylene) i,y CO for the ith response period of the virtual plant within the y-th virtual plant boundary 2 The emission is expressed in tons of carbon dioxide; PE (polyethylene) sys,y The unit of the emission is ton of carbon dioxide, wherein the emission is generated by the power consumption of the virtual power plant main control platform system in the boundary of the virtual power plant in the y year;
wherein the content of the first and second substances,
in the formula, EG p,i,j,y The power supply quantity of the power supply component j in the y year virtual power plant in the i th response period is calculatedThe position is kilowatt-hour; EF j,y The unit of the power supply emission factor of the power supply component j in the virtual power plant in the y year is ton carbon dioxide per megawatt hour;
wherein, the first and the second end of the pipe are connected with each other,
PE sys,y ＝EC sys,y ×EF y ×10 -3 ………………(3)
in the formula, EC sys,y The unit of the electric quantity consumed in the operation process of the virtual power plant main control platform system in the boundary of the virtual power plant in the y year is kilowatt-hour; EF y And the emission factor of the power grid in the y year is the unit of ton of carbon dioxide per megawatt hour.
Further, the reference greenhouse gas emission is the reference CO for each response period 2 The sum of the emissions is calculated according to equation (4):
in the formula, BE y The unit of the greenhouse gas emission is ton of carbon dioxide of a virtual power plant baseline in the y year; BE i,y The unit of the baseline greenhouse gas emission is ton of carbon dioxide in the ith response period of the virtual power plant in the boundary of the virtual power plant in the y year;
wherein the content of the first and second substances,
in the formula, EG b,i,j,y The power supply unit is the baseline power supply quantity of the power supply assembly j in the virtual power plant in the y year in the ith response period, and the unit is kilowatt-hour;
ES p,i,y the net power supply amount of the virtual power plant to the power grid in the ith response period in the y year is megawatt hour;
ES b,i,y and the unit of the net power supply amount of the virtual power plant to the benchmark line of the power grid in the ith response period in the y year is megawatt hour.
Still further, the ES b,i,y The following equation is obtained:
ES b,i,y ＝T i,y ×P b,i,y ………………(6)
in the formula, T i,y The duration of the ith response period of the virtual power plant in the y year is in the unit of hour; p is b,i,y The mean power supply unit is megawatt for the baseline mean power supply of the ith response period of the virtual power plant to the power grid in the y year;
P b,i,y monitoring is carried out by the following steps:
1) Determining a typical day, wherein the determination of the typical day is divided into two cases:
a. if the demand response occurs in a working day, selecting a demand response day or executing 5 days before the first demand response day of a demand response month, wherein non-working days, power interruption and user participation demand response days need to be removed, selecting parts less than 5 days in a forward sequence after removal to complement 5 days, removing two days with the maximum load and the minimum load of a power user day from the 5 days, and the rest 3 days are called as typical days;
b. if the demand response occurs in a non-working day, selecting the nearest 3 non-working days before the demand response day as typical days, wherein power interruption and the demand response day in which a user participates are required to be eliminated, and selecting the parts less than 3 days after elimination in a forward sequence to complement for 3 days;
2) Calculating the baseline load:
a. taking user load data of the same time period on a typical day;
b. calculating the average value of the load data in the same time period in different typical days, wherein the average value is the reference line average power supply power of the power grid in the response time period;
the EG b,i,j,y Monitoring period and P b,i,y Are consistent.
The other technical scheme adopted by the invention is as follows: a greenhouse gas emission reduction calculation system to operate a virtual power plant, comprising:
virtual power plant greenhouse gas source determination unit: identifying a virtual power plant, determining a boundary of the virtual power plant, and determining a greenhouse gas source contained in the virtual power plant;
baseline greenhouse gas source determination unit: determining a reference line scene, and determining a greenhouse gas source contained in the reference line;
virtual power plant greenhouse gas emission calculation unit: calculating the greenhouse gas emission amount of the virtual power plant according to the greenhouse gas source contained in the virtual power plant;
reference line greenhouse gas emission amount calculation unit: calculating the greenhouse gas emission amount of the reference line according to the greenhouse gas source contained in the reference line;
the calculation unit for the greenhouse gas emission reduction amount of the virtual power plant: and calculating the emission reduction amount of the greenhouse gas of the virtual power plant according to the emission amount of the greenhouse gas of the virtual power plant and the emission amount of the reference line greenhouse gas.
The invention has the following beneficial effects: the method can specifically quantify the greenhouse gas emission reduction amount of the virtual power plant, can calculate the greenhouse gas emission reduction amount of the virtual power plant for power grid companies, load aggregators and the like, and solves the problem of greenhouse gas emission reduction amount calculation deficiency urgently needed in the industry.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions in the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art virtual power plant;
FIG. 2 is a flow chart of a greenhouse gas emission reduction calculation method of operating a virtual power plant in accordance with the present invention;
FIG. 3 is a block diagram of a greenhouse gas emission reduction calculation system for operating a virtual power plant in accordance with the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.
Technical term interpretation:
virtual power plant: by applying a coordination control technology, an intelligent metering technology and an information communication technology to serve as a power supply coordination management system for a special power plant to participate in the operation of a power market and a power grid, the aggregation and coordination optimization of distributed energy sources such as a distributed power supply, an energy storage system, a controllable load and an electric vehicle can be realized (power Internet of things terminology (Q/GDW 12098-2021)).
Response period of virtual power plant: and the virtual power plant participates in adjusting the time period of the power load according to the power grid demand response requirement.
Baseline load of virtual power plant: and the virtual power plant counts the calculated load curve according to a certain time period under the condition that the demand response is not implemented in the demand response period.
Power supply components of the virtual power plant: refers to a facility or device in the virtual power plant, which can provide power externally, the power is derived from fossil fuel combustion, renewable energy sources, etc., or is derived from power supply outside the virtual power plant (if the charging capacity of a certain energy storage facility in the virtual power plant is derived from outside the virtual power plant, the energy storage facility is regarded as a power supply component in the virtual power plant).
Greenhouse gases: the gaseous components naturally present in the atmosphere and generated by human activities, capable of absorbing and emitting radiation generated by the earth's surface, the atmosphere and the cloud, having wavelengths within the infrared spectrum.
The reference line scene: used to provide a reference, hypothetical scenario that may occur in a scenario where a virtual power plant is not implemented.
Greenhouse gas emission reduction: the calculated reduction of greenhouse gas emissions generated by the virtual power plant over a period of time compared to emissions of the baseline scenario.
Example 1
The embodiment provides a method for calculating the emission reduction of greenhouse gases in a virtual power plant, as shown in fig. 2, which includes:
identifying a virtual power plant, determining a boundary of the virtual power plant, and determining a greenhouse gas source contained in the virtual power plant;
determining a reference line scene, and determining a greenhouse gas source contained in the reference line;
calculating the greenhouse gas emission amount of the virtual power plant according to the greenhouse gas source contained in the virtual power plant;
calculating the greenhouse gas emission amount of the reference line according to the greenhouse gas source contained in the reference line;
and calculating the emission reduction amount of the greenhouse gas of the virtual power plant according to the emission amount of the greenhouse gas of the virtual power plant and the reference line emission amount of the greenhouse gas.
The virtual power plant boundary comprises all facilities and equipment in the virtual power plant, such as a distributed power supply, an energy storage system, a controllable load, an electric automobile and the like, and a regional power grid connected with the virtual power plant.
Greenhouse gas emission sources and whether greenhouse gases are included within project boundaries are shown in table 1:
TABLE 1 virtual Power plant scenarios and emission sources and greenhouse gas types encompassed by baseline scenarios
The reference line scene refers to a scene that facilities and equipment in the virtual power plant operate according to a state before the virtual power plant is formed.
In order to simplify the calculation, the operation states of all facilities and equipment of the virtual power plant in operation are assumed to be the same as the reference line scene except for the virtual power plant main control platform in the non-response period, and the emission of all facilities and equipment except the virtual power plant main control platform in the non-response period is not considered when the emission of the virtual power plant and the emission of the reference line are calculated.
The greenhouse gas emission amount of the virtual power plant comprises the emission generated by the power consumption consumed by the operation of the virtual power plant main control platform in the boundary of the virtual power plant and the sum of the operation emission of other facilities and equipment in the virtual power plant in each response period, and the specific calculation is shown in the following formula:
in the formula, PE y The emission of greenhouse gases of a virtual power plant in the y year is in tons of carbon dioxide; PE (polyethylene) i,y CO for the ith response period of the virtual plant within the y-th virtual plant boundary 2 The emission is expressed in tons of carbon dioxide; PE (polyethylene) sys,y The unit of the emission is ton of carbon dioxide, wherein the emission is generated by the power consumption of the virtual power plant main control platform system in the boundary of the virtual power plant in the y year;
wherein the content of the first and second substances,
in the formula, EG p,i,j,y The power supply quantity of a power supply component j in the virtual power plant in the y year in the ith response period is in kilowatt-hour; EF j,y The power supply emission factor of a power supply assembly j in the power plant is virtualized in the y year, and the unit is ton carbon dioxide per megawatt hour;
wherein, the first and the second end of the pipe are connected with each other,
PE sys,y ＝EC sys,y ×EF y ×10 -3 ………………(3)
in the formula, EC sys,y The unit of the electric quantity consumed in the operation process of the virtual power plant main control platform system in the boundary of the virtual power plant in the y-th year is kilowatt-hour; EF y And the emission factor of the power grid in the y year is expressed in the unit of ton of carbon dioxide per megawatt hour.
Baseline greenhouse gas emission as baseline CO for each response period 2 The sum of the emissions is calculated according to equation (4):
in the formula, BE y The emission of greenhouse gases is the baseline greenhouse gas emission of a virtual power plant in the y year, and the unit is ton of carbon dioxide; BE i,y The unit of the baseline greenhouse gas emission is ton of carbon dioxide in the ith response period of the virtual power plant in the boundary of the virtual power plant in the y year;
wherein, the first and the second end of the pipe are connected with each other,
in the formula, EG b,i,j,y The power supply unit is the baseline power supply quantity of the power supply assembly j in the virtual power plant in the y year in the ith response period, and the unit is kilowatt-hour;
ES p,i,y the net power supply amount of the virtual power plant to the power grid in the ith response period in the y year is megawatt-hour;
ES b,i,y and the unit of the net power supply amount of the virtual power plant to the benchmark line of the power grid in the ith response period in the y year is megawatt hour.
The ES b,i,y The following equation is used:
ES b,i,y ＝T i,y ×P b,i,y ………………(6)
in the formula, T i,y The duration of the ith response period of the virtual power plant in the y year is in the unit of hour; p is b,i,y And the unit of the baseline average power supply for the power grid in the ith response period of the virtual power plant in the y year is megawatt.
P b,i,y Monitoring is carried out by the following steps:
1) The typical day is determined, and the determination of the typical day is divided into two cases:
a. if the demand response occurs in a working day, selecting a demand response day or executing 5 days before the first demand response day of a demand response month, wherein non-working days, power interruption and user participation demand response days need to be removed, selecting parts less than 5 days in a forward sequence after removal to complement 5 days, removing two days with the maximum load and the minimum load of a power user day from the 5 days, and the rest 3 days are called as typical days;
b. if the demand response occurs in a non-working day, selecting the nearest 3 non-working days before the demand response day as a typical day, wherein the power interruption and the demand response day participated by the user need to be eliminated, and selecting the parts less than 3 days after elimination in a forward sequence to complement for 3 days;
2) Calculating the baseline load:
a. taking user load data of the same time period on a typical day;
b. calculating the average value of the load data in the same time interval in different typical days, wherein the average value is the baseline average power supply power of the response time interval to the power grid;
the EG b,i,j,y Monitoring period and P b,i,y Consistent with the monitoring period.
The reduction and discharge amount of greenhouse gases in the virtual power plant are calculated by the formula (7):
ER y ＝BE y -PE y ………………(7)
in the formula, ER y The emission reduction in the year y is expressed in the unit of ton of carbon dioxide (tCO) 2 )。
Example 2
The embodiment is a system for collecting supply chain carbon emission data by using a service center, and as shown in fig. 3, the system is composed of a virtual power plant greenhouse gas source determining unit, a reference line greenhouse gas source determining unit, a virtual power plant greenhouse gas emission amount calculating unit, a reference line greenhouse gas emission amount calculating unit and a virtual power plant greenhouse gas emission amount reducing calculating unit.
Virtual power plant greenhouse gas source determining unit: identifying a virtual power plant, determining a boundary of the virtual power plant, and determining a greenhouse gas source contained in the virtual power plant.
Reference line greenhouse gas source determination unit: determining the scene of a reference line and determining the greenhouse gas source contained in the reference line.
A unit for calculating greenhouse gas emission of a virtual power plant: and calculating the greenhouse gas emission amount of the virtual power plant according to the greenhouse gas source contained in the virtual power plant.
Baseline greenhouse gas emission calculation unit: and calculating the reference line greenhouse gas emission according to the greenhouse gas source contained in the reference line.
The calculation unit for the greenhouse gas emission reduction amount of the virtual power plant: and calculating the emission reduction amount of the greenhouse gas of the virtual power plant according to the emission amount of the greenhouse gas of the virtual power plant and the reference line emission amount of the greenhouse gas.
The reference line scene refers to a scene that facilities and equipment in the virtual power plant operate according to a state before the virtual power plant is built.
In the unit for calculating the greenhouse gas emission amount of the virtual power plant, in order to simplify calculation, the operation state of each facility and equipment of the virtual power plant in operation is the same as the reference line scene except for the virtual power plant main control platform in a non-response period, and the emission of each facility and equipment except the virtual power plant main control platform in the non-response period is not considered when the emission of the virtual power plant and the reference line emission are calculated;
the greenhouse gas emission amount of the virtual power plant comprises the emission generated by the power consumption consumed by the operation of the virtual power plant main control platform in the boundary of the virtual power plant and the sum of the operation emission of other facilities and equipment in the virtual power plant in each response period, and the specific calculation is shown in the following formula:
in the formula, PE y The emission of greenhouse gases of a virtual power plant in the y year is in tons of carbon dioxide; PE (polyethylene) i,y CO for the ith response period of the virtual plant within the y-th virtual plant boundary 2 The emission is expressed in tons of carbon dioxide; PE (polyethylene) sys,y The unit of the emission is ton of carbon dioxide, wherein the emission is generated by the power consumption of the virtual power plant main control platform system in the boundary of the virtual power plant in the y year;
wherein the content of the first and second substances,
in the formula, EG p,i,j,y The power supply quantity of a power supply component j in the virtual power plant in the y year in the ith response period is in kilowatt-hour; EF j,y The unit of the power supply emission factor of the power supply component j in the virtual power plant in the y year is ton carbon dioxide per megawatt hour;
wherein the content of the first and second substances,
PE sys,y ＝EC sys,y ×EF y ×10 -3 ………………(3)
in the formula, EC sys,y The unit of the electric quantity consumed in the operation process of the virtual power plant main control platform system in the boundary of the virtual power plant in the y-th year is kilowatt-hour; EF y And the emission factor of the power grid in the y year is the unit of ton of carbon dioxide per megawatt hour.
In the reference line greenhouse gas emission amount calculating unit, the reference line greenhouse gas emission amount is a reference line CO of each response period 2 The sum of the emissions is calculated according to equation (4):
in the formula, BE y The unit of the greenhouse gas emission is ton of carbon dioxide of a virtual power plant baseline in the y year; BE i,y The unit of the baseline greenhouse gas emission is ton of carbon dioxide in the ith response period of the virtual power plant in the boundary of the virtual power plant in the y year;
wherein the content of the first and second substances,
in the formula, EG b,i,j,y The unit is kilowatt-hour, which is the baseline power supply quantity of the power supply assembly j in the virtual power plant in the ith response period in the y year;
ES p,i,y the net power supply amount of the virtual power plant to the power grid in the ith response period in the y year is megawatt hour;
ES b,i,y and the unit of the net power supply amount of the virtual power plant to the benchmark line of the power grid in the ith response period in the y year is megawatt hour.
The ES b,i,y The following equation is used:
ES b,i,y ＝T i,y ×P b,i,y ………………(6)
in the formula, T i,y Deficiency of the year yThe duration of the ith response period of the simulated power plant is in hours; p b,i,y The unit of the reference line average power supply power to the power grid for the ith response period of the virtual power plant in the y year is megawatt;
P b,i,y monitoring is carried out by the following steps:
1) Determining a typical day, wherein the determination of the typical day is divided into two cases:
a. if the demand response occurs in a working day, selecting a demand response day or executing 5 days before the first demand response day of a demand response month, wherein non-working days, power interruption and user participation demand response days need to be removed, selecting the parts less than 5 days forward to complement 5 days, removing two days with the maximum load and the minimum load of the power user day from the 5 days, and calling the remaining 3 days as typical days;
b. if the demand response occurs in a non-working day, selecting the nearest 3 non-working days before the demand response day as a typical day, wherein the power interruption and the demand response day participated by the user need to be eliminated, and selecting the parts less than 3 days after elimination in a forward sequence to complement for 3 days;
2) Calculating the baseline load:
a. taking user load data of the same time period on a typical day;
b. calculating the average value of the load data in the same time period in different typical days, wherein the average value is the reference line average power supply power of the power grid in the response time period;
the EG b,i,j,y Monitoring period and P b,i,y Are consistent.
In the unit for calculating the reduction of the greenhouse gas emission of the virtual power plant, the reduction of the greenhouse gas emission of the virtual power plant is calculated by a formula (7):
ER y ＝BE y -PE y ………………(7)
in the formula, ER y The emission reduction in the year y is expressed in the unit of ton of carbon dioxide (tCO) 2 )。
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for calculating the reduced emission of greenhouse gases in a virtual power plant, comprising:
identifying a virtual power plant, determining a virtual power plant boundary, and determining a greenhouse gas source contained in the virtual power plant;
determining a reference line scene, and determining a greenhouse gas source contained in the reference line;
calculating the greenhouse gas emission amount of the virtual power plant according to the greenhouse gas source contained in the virtual power plant;
calculating the emission amount of greenhouse gas of the reference line according to the greenhouse gas source contained in the reference line;
and calculating the emission reduction amount of the greenhouse gas of the virtual power plant according to the emission amount of the greenhouse gas of the virtual power plant and the emission amount of the reference line greenhouse gas.
2. The method of claim 1, wherein the baseline scenario is a scenario in which facilities and equipment in the virtual power plant are operated in a state before the virtual power plant is formed.
3. The method of claim 1, wherein for simplicity of calculation, it is assumed that in the non-response period, except for the virtual power plant main control platform, the operating status of each facility and equipment in the virtual power plant in operation is the same as the baseline situation, and the emission of each facility and equipment outside the non-response period virtual power plant main control platform is not considered in the calculation of the emission of the virtual power plant and the baseline emission;
the greenhouse gas emission amount of the virtual power plant comprises the emission generated by the power consumption consumed by the operation of the virtual power plant main control platform in the boundary of the virtual power plant and the sum of the operation emission of other facilities and equipment in the virtual power plant in each response period, and the specific calculation is shown in the following formula:
in the formula, PE y The emission of greenhouse gases of a virtual power plant in the y year is in tons of carbon dioxide; PE (polyethylene) i，y Co for the ith response period of the virtual plant within the y-th virtual plant boundary 2 The emission is expressed in tons of carbon dioxide; PE (polyethylene) sys，y The unit of the emission is ton of carbon dioxide, wherein the emission is generated by the power consumption of the virtual power plant main control platform system in the boundary of the virtual power plant in the y year;
wherein the content of the first and second substances,
in the formula, EG p，i，j，y The power supply quantity of a power supply component j in the virtual power plant in the y year in the ith response period is in kilowatt-hour; EF j，y The unit of the power supply emission factor of the power supply component j in the virtual power plant in the y year is ton carbon dioxide per megawatt hour;
wherein, the first and the second end of the pipe are connected with each other,
PE sys，y ＝EC sys，y ×EF y ×10 -3 ..................(3)
in the formula, EC sys，y The unit of the electric quantity consumed in the operation process of the virtual power plant main control platform system in the boundary of the virtual power plant in the y year is kilowatt-hour; EF y And the emission factor of the power grid in the y year is the unit of ton of carbon dioxide per megawatt hour.
4. The method of claim 3, wherein the baseline greenhouse gas emission is a baseline CO for each response period 2 The sum of the emissions is calculated according to equation (4):
in the formula, BE y The unit of the greenhouse gas emission is ton of carbon dioxide of a virtual power plant baseline in the y year; BE i，y The unit of the baseline greenhouse gas emission is ton of carbon dioxide in the ith response period of the virtual power plant in the boundary of the virtual power plant in the y year; wherein the content of the first and second substances,
in the formula, EG b，i，j，y The unit is kilowatt-hour, which is the baseline power supply quantity of the power supply assembly j in the virtual power plant in the ith response period in the y year;
ES p，i，y the net power supply amount of the virtual power plant to the power grid in the ith response period in the y year is megawatt-hour;
ES b，i，y and the unit of the baseline net power supply amount of the virtual power plant to the power grid in the ith response period in the y year is megawatt hour.
5. The method of claim 4, wherein the ES is a method for calculating a reduction in greenhouse gas emissions during operation of a virtual power plant b，i，y The following equation is obtained:
ES b，i，y ＝T i，y ×P b，i，y ..................(6)
in the formula, T o，y The duration of the ith response period of the virtual power plant in the y year is in the unit of hour; p b，i，y The unit of the reference line average power supply power to the power grid for the ith response period of the virtual power plant in the y year is megawatt;
P b，i，y monitoring is carried out by the following steps:
1) The typical day is determined, and the determination of the typical day is divided into two cases:
a. if the demand response occurs in a working day, selecting a demand response day or executing 5 days before the first demand response day of a demand response month, wherein non-working days, power interruption and user participation demand response days need to be removed, selecting parts less than 5 days in a forward sequence after removal to complement 5 days, removing two days with the maximum load and the minimum load of a power user day from the 5 days, and the rest 3 days are called as typical days;
b. if the demand response occurs in a non-working day, selecting the nearest 3 non-working days before the demand response day as typical days, wherein power interruption and the demand response day in which a user participates are required to be eliminated, and selecting the parts less than 3 days after elimination in a forward sequence to complement for 3 days;
2) Calculating the baseline load:
a. taking user load data of the same time period on a typical day;
b. calculating the average value of the load data in the same time interval in different typical days, wherein the average value is the baseline average power supply power of the response time interval to the power grid;
the EG b，i，j，y Monitoring period and P b，i，y Consistent with the monitoring period.
6. A greenhouse gas emission reduction calculation system for operating a virtual power plant, comprising:
virtual power plant greenhouse gas source determination unit: identifying a virtual power plant, determining a boundary of the virtual power plant, and determining a greenhouse gas source contained in the virtual power plant;
reference line greenhouse gas source determination unit: determining a reference line scene, and determining a greenhouse gas source contained in the reference line;
virtual power plant greenhouse gas emission calculation unit: calculating the greenhouse gas emission amount of the virtual power plant according to the greenhouse gas source contained in the virtual power plant;
reference line greenhouse gas emission amount calculation unit: calculating the emission amount of greenhouse gas of the reference line according to the greenhouse gas source contained in the reference line;
the calculation unit for the greenhouse gas emission reduction amount of the virtual power plant: and calculating the emission reduction amount of the greenhouse gas of the virtual power plant according to the emission amount of the greenhouse gas of the virtual power plant and the emission amount of the reference line greenhouse gas.
7. A greenhouse gas emission reduction calculation system for operating a virtual power plant as claimed in claim 6, wherein the baseline scenario is a scenario where facilities and equipment in the virtual power plant are operated in a state before the virtual power plant is built.
8. The system of claim 6, wherein in the calculating unit for calculating the emission amount of greenhouse gases from the virtual power plant, for the sake of simplicity, in the non-response period, except for the virtual power plant main control platform, the operating status of each facility and equipment in the virtual power plant in operation is assumed to be the same as the baseline situation, and the emission of each facility and equipment outside the virtual power plant main control platform in the non-response period is not considered in calculating the emission of the virtual power plant and the baseline emission;
the greenhouse gas emission amount of the virtual power plant comprises the emission generated by the power consumption consumed by the operation of the virtual power plant main control platform in the boundary of the virtual power plant and the sum of the operation emission of other facilities and equipment in the virtual power plant in each response period, and the specific calculation is shown in the following formula:
in the formula, PE y The emission of greenhouse gases of a virtual power plant in the y year is in tons of carbon dioxide; PE (polyethylene) i，y Co of the i-th response period of the virtual plant within the y-th virtual plant boundary 2 The emission is expressed in tons of carbon dioxide; PE (polyethylene) sys，y The unit of the emission is ton of carbon dioxide, wherein the emission is generated by the power consumption of the virtual power plant main control platform system in the boundary of the virtual power plant in the y year;
wherein the content of the first and second substances,
in the formula, EG p，i，j，y The power supply quantity of the power supply component j in the virtual power plant in the y year in the ith response period is in kilowatt-hour unit; EF j，y The unit of the power supply emission factor of the power supply component j in the virtual power plant in the y year is ton carbon dioxide per megawatt hour;
wherein the content of the first and second substances,
PE sys，y ＝EC sys，y ×EF y ×10 -3 ..................(3)
in the formula, EC sys，y The unit of the electric quantity consumed in the operation process of the virtual power plant main control platform system in the boundary of the virtual power plant in the y-th year is kilowatt-hour; EF y And the emission factor of the power grid in the y year is the unit of ton of carbon dioxide per megawatt hour.
9. The system of claim 8, wherein the reference greenhouse gas emission calculation unit calculates the reference greenhouse gas emission as the sum of the reference CO2 emissions for each response period according to formula (4):
in the formula, BE y The emission of greenhouse gases is the baseline greenhouse gas emission of a virtual power plant in the y year, and the unit is ton of carbon dioxide; BE i，y The unit of the baseline greenhouse gas emission is ton of carbon dioxide in the ith response period of the virtual power plant in the boundary of the virtual power plant in the y year;
wherein, the first and the second end of the pipe are connected with each other,
in the formula, EG b，i，j，y The unit is kilowatt-hour, which is the baseline power supply quantity of the power supply assembly j in the virtual power plant in the ith response period in the y year;
ES p，i，y for the year y virtualThe net power supply quantity of the power plant to the power grid in the ith response period is megawatt-hour;
ES b，i，y and the unit of the net power supply amount of the virtual power plant to the benchmark line of the power grid in the ith response period in the y year is megawatt hour.
10. A greenhouse gas emission reduction calculation system for operating a virtual power plant as claimed in claim 9, wherein the ES b，i，y The following equation is obtained:
ES b，i，y ＝T i，y ×P b，i，y ..................(6)
in the formula, T i，y The duration of the ith response period of the virtual power plant in the y year is in the unit of hour; p b，i，y The unit of the reference line average power supply power to the power grid for the ith response period of the virtual power plant in the y year is megawatt;
P b，i，y monitoring is carried out by the following steps:
1) Determining a typical day, wherein the determination of the typical day is divided into two cases:
a. if the demand response occurs in a working day, selecting a demand response day or executing 5 days before the first demand response day of a demand response month, wherein non-working days, power interruption and user participation demand response days need to be removed, selecting parts less than 5 days in a forward sequence after removal to complement 5 days, removing two days with the maximum load and the minimum load of a power user day from the 5 days, and the rest 3 days are called as typical days;
b. if the demand response occurs in a non-working day, selecting the nearest 3 non-working days before the demand response day as a typical day, wherein the power interruption and the demand response day participated by the user need to be eliminated, and selecting the parts less than 3 days after elimination in a forward sequence to complement for 3 days;
2) Calculating the baseline load:
a. taking user load data of the same time period on a typical day;
b. calculating the average value of the load data in the same time interval in different typical days, wherein the average value is the baseline average power supply power of the response time interval to the power grid;
the EG b，i，j，y Monitoring period and P b，i，y Are consistent.
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