CN109493184B - Electric power clearing method, device, equipment and storage medium based on green certificate transaction - Google Patents

Electric power clearing method, device, equipment and storage medium based on green certificate transaction Download PDF

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CN109493184B
CN109493184B CN201811376172.3A CN201811376172A CN109493184B CN 109493184 B CN109493184 B CN 109493184B CN 201811376172 A CN201811376172 A CN 201811376172A CN 109493184 B CN109493184 B CN 109493184B
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张翔
陈政
陈晖�
杨再敏
辜炜德
宋艺航
冷媛
黄国日
金东亚
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Energy Development Research Institute of China Southern Power Grid Co Ltd
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Abstract

The invention relates to a method, a device, equipment and a storage medium for clearing electric power based on green certificate transaction, which comprises the following steps: the computer equipment obtains the clearing result of the green energy day-ahead market according to the declaration result of the green energy day-ahead market, obtains the clearing result of the conventional electric energy day-ahead market according to a preset electric power plan model and basic data by taking the clearing result of the green energy day-ahead market as a boundary condition, and further obtains the clearing result of the day-ahead electric energy market according to the clearing result of the conventional electric energy day-ahead market and the clearing result of the green energy day-ahead market. The electric power clearing method provided by the invention realizes the effective connection between the conventional electric energy day-ahead market and the green energy day-ahead market in a clearing mechanism, and finally completes the binding transaction of the green energy and the electric power.

Description

Electric power clearing method, device, equipment and storage medium based on green certificate transaction
Technical Field
The invention relates to the technical field of power markets, in particular to a power clearing method, device, equipment and storage medium based on green certificate trading.
Background
With the continuous acceleration of the pace of the market reformation of electric power in China, the construction of the spot market of electric power is promoted. In 2017, 9 and 5, the national institute of development and improvement committee office and the national energy agency issue a 'notice on developing the test point work for the construction of the electric power spot market' jointly, 8 regions in south (starting from the Guangdong), Mongolian, Zhejiang, Shanxi, Shandong, Fujian, Sichuan, Gansu and the like are selected as first test points, and the test run of the electric power spot market is started before the end of 2018.
Meanwhile, the green certificate trading market is being built in China, and the user side is stimulated to consume new energy by a green certificate quota system. The method enriches the transaction modes of green certificates, ensures that quota system is completed more effectively, realizes the binding transaction of green certificates and electric power in the time dimension of the day ahead, promotes the consumption of new energy, and is a technical difficulty to be solved for establishing the electric power spot market in China at present.
Therefore, how to develop the binding transaction of new energy green certificates and electric power in the day ahead and realize the link between the green certificate transaction and the conventional day ahead electric power market in the clearing mechanism is a problem to be solved in a key way.
Disclosure of Invention
Therefore, there is a need to provide a method, an apparatus, a device and a storage medium for clearing electric power based on green certificate transaction, which can effectively perform the bundled transaction of new energy green certificate and electric power, and can realize the link between the green certificate transaction and the conventional day-ahead electric power market in the clearing mechanism.
In a first aspect, a method for a credential-based transaction, the method comprising:
obtaining a clearing result of the day-ahead market of the green energy according to a declaration result of the day-ahead market of the green energy; the declaration result comprises declaration data of green energy power generation enterprises and power utilization users, and the clearing result of the market before the green energy day comprises clearing electric quantity and clearing price;
taking the clearing result of the day-ahead market of the green energy as a boundary condition, and acquiring the clearing result of the day-ahead market of the conventional electric energy according to a preset electric power plan model and basic data; the basic data comprise parameter information of a power generation system, and the clearing result of the market before the day of the conventional electric energy comprises a start-stop plan and an output plan;
and obtaining the clearing result of the day-ahead electric energy market according to the clearing result of the day-ahead market of the conventional electric energy and the clearing result of the day-ahead market of the green energy.
In one embodiment, the obtaining of the clearing result of the green energy resource day-ahead market according to the declaration result of the green energy resource day-ahead market includes:
according to the declaration result of the day-ahead market of the green energy, acquiring a target price difference between the quoted price of the green energy power generation enterprise and the quoted price of the power utilization user;
and determining the clearing result of the day-ahead market of the green energy according to the target price difference.
In one embodiment, the obtaining of the target price difference between the quoted price of the green energy power generation enterprise and the quoted price of the electricity consumer according to the declaration result of the green energy day-ahead market includes:
sequencing the quotations of the plurality of green energy power generation enterprises from low to high to obtain sequenced first quotations;
sequencing the quotations of the plurality of electricity users from high to low to obtain sequenced second quotations;
performing difference value operation on each first quoted price and each corresponding second quoted price to obtain price differences between quoted prices of a plurality of green energy power generation enterprises and quoted prices of power users; the smallest price difference is determined as the target price difference.
In one embodiment, the determining the clearing result of the day-ahead market of the green energy according to the target price difference comprises:
determining an arithmetic average value between the quoted price of the green energy power generation enterprise corresponding to the target price difference and the quoted price of the power utilization user as a clearing price of the green energy day-ahead market;
and determining the generated energy of the green energy power generation enterprises or the power demand of the power consumers corresponding to the target price difference as the output clear energy of the market of the green energy in the day ahead.
In one embodiment, the preset power planning model includes: the safety constraint unit combination objective function, the safety constraint economic dispatching objective function, a first constraint condition and a second constraint condition; the safety constraint unit combination objective function is used for obtaining a start-stop plan of a unit, the safety constraint economic dispatching objective function is used for obtaining an output plan of the unit, the first constraint condition is used for constraining the safety constraint unit combination objective function to enable the electricity purchasing cost output by the safety constraint unit combination objective function to be minimum, and the second constraint condition is used for constraining the safety constraint economic dispatching objective function to enable the electricity purchasing cost output by the safety constraint economic dispatching objective function to be minimum.
In one embodiment, the safety constraint unit combination objective function is formula (1):
Figure BDA0001870785190000031
wherein N represents the total number of the units; t represents the total number of time segments considered; pi,tRepresenting the output of the unit i in the time period t; ci,t(Pi,t)、
Figure BDA0001870785190000032
The running cost, the starting cost and the shutdown cost of the unit i in the time period t are respectively, wherein the unit running cost Ci,t(Pi,t) Is a multi-segment linear function of the unit output;
the safety constraint economic dispatching objective function is formula (2):
Figure BDA0001870785190000033
wherein N represents the total number of the units; t represents the total number of time segments considered; pi,tRepresenting the output of the unit i in the time period t; ci,t(Pi,t) The operating cost of the unit i in the time period t is a multi-segment linear function of the unit output.
In one embodiment, the first constraint comprises a first system constraint, a first group constraint, a first network security constraint; wherein the content of the first and second substances,
the first system constraint includes formula (3) to formula (9):
Figure BDA0001870785190000041
wherein, Pi,tRepresenting the output of the unit i in the time period t, DtRepresents the system load for the t period;
Figure BDA0001870785190000042
wherein alpha isi,tRepresenting the starting and stopping states of the unit i in the time period t, alphai,t0 denotes a unit shutdown, αi,t1 represents the starting of the unit;
Figure BDA0001870785190000043
representing the maximum output of the unit i in a time period t;
Figure BDA0001870785190000044
represents the positive reserve capacity requirement of the system during the period t; dtRepresents the system load for the t period;
Figure BDA0001870785190000045
wherein the content of the first and second substances,
Figure BDA0001870785190000046
representing the minimum output of the unit i in a t period;
Figure BDA0001870785190000047
the system negative spare capacity requirement representing the t period; dtRepresents the system load for the t period;
Figure BDA0001870785190000048
Figure BDA0001870785190000049
wherein, Δ Pi URepresenting the maximum rate of ascent, Δ P, of the unit ii DRepresenting the maximum downward climbing speed of the unit i;
Figure BDA00018707851900000410
respectively representing the maximum output and the minimum output of the unit i in the time period t;
Figure BDA00018707851900000411
respectively representing the up-regulation and down-regulation rotation standby requirements in the time period t; pi,tRepresenting the output of the unit i in the time period t;
Figure BDA00018707851900000412
Figure BDA00018707851900000413
wherein the content of the first and second substances,
Figure BDA00018707851900000414
respectively representing AGC up-regulation and AGC down-regulation which can be provided by the unit i in a time period t for standby;
Figure BDA00018707851900000415
respectively representing the backup requirements of AGC up-regulation and down-regulation in the t period;
the first set of constraints comprises equations (10) through (16):
Figure BDA0001870785190000051
wherein alpha isi,tIndicating the start of the unit i in the time period tRest state, αi,t0 denotes a unit shutdown, αi,t1 represents the starting of the unit;
Figure BDA0001870785190000052
respectively representing the maximum output and the minimum output of the unit i in the time period t;
Figure BDA0001870785190000053
Figure BDA0001870785190000054
wherein, Δ Pi URepresenting the maximum rate of ascent, Δ P, of the unit ii DRepresenting the maximum downward climbing speed of the unit i;
Figure BDA0001870785190000055
Figure BDA0001870785190000056
Figure BDA0001870785190000057
Figure BDA0001870785190000058
wherein alpha isi,tRepresenting the starting and stopping states of the unit i in a time period t; t isU、TDRepresenting a minimum continuous start-up time and a minimum continuous shutdown time of the unit;
Figure BDA0001870785190000059
representing the time that the unit i is continuously started and stopped in the time period t;
the first network security constraint includes equation (17) and equation (18):
Figure BDA00018707851900000510
wherein, Pl maxIs the tidal current transmission limit of line l; gl-iOutputting a power transfer distribution factor for a generator of a line l by a node where a unit i is located; k is the number of nodes of the system; gl-kA generator output power transfer distribution factor for node k to line l; dk,tIs the bus load value of the node k in the time period t;
Figure BDA00018707851900000511
wherein, Ps min、Ps maxRespectively the tidal current transmission limit of the section s; gs-iThe generator output power of the section s is transferred to a distribution factor for the node where the unit i is located; gs-kThe distribution factor of the output power transfer of the generator is the node k to the section s;
the second constraint condition comprises a second system constraint condition, a second unit constraint condition and a second network security constraint condition; wherein the content of the first and second substances,
the second system constraint includes equation (19):
Figure BDA0001870785190000061
wherein, Pi,tRepresenting the output of the unit i in the time period t, DtRepresents the system load for the t period;
the second unit constraints include formula (20) and formula (21):
Figure BDA0001870785190000062
wherein alpha isi,tIndicating machine seti Start-stop State at time t, αi,t0 denotes a unit shutdown, αi,t1 represents the starting of the unit;
Figure BDA0001870785190000063
respectively the maximum output and the minimum output of the unit i in the time period t;
ΔPi D≤Pi,t-Pi,t-1≤ΔPi U (21)；
wherein, Δ Pi UFor the unit i maximum climbing rate, Δ Pi DThe maximum downward climbing speed of the unit i;
the second network security constraint includes formula (22) and formula (23):
Figure BDA0001870785190000064
wherein, Pl maxIs the tidal current transmission limit of line l; gl-iOutputting a power transfer distribution factor for a generator of a line l by a node where a unit i is located; k is the number of nodes of the system; gl-kA generator output power transfer distribution factor for node k to line l; dk,tIs the bus load value of the node k in the time period t;
Figure BDA0001870785190000065
wherein, Ps min、Ps maxRespectively the tidal current transmission limit of the section s; gs-iThe generator output power of the section s is transferred to a distribution factor for the node where the unit i is located; gs-kThe generator output power transfer distribution factor is node k to section s.
In a second aspect, a device for clearing electric power based on a green certificate transaction, the device comprising:
the acquisition module is used for acquiring the clearing result of the day-ahead green energy market according to the declaration result of the day-ahead green energy market; the declaration result comprises declaration data of green energy power generation enterprises and power utilization users, and the clearing result of the market before the green energy day comprises clearing electric quantity and clearing price;
the calculation module is used for acquiring the clearing result of the day-ahead market of the conventional electric energy according to a preset electric power plan model and basic data by taking the clearing result of the day-ahead market of the green energy as a boundary condition; the basic data comprise parameter information of a power generation system, the clearing results of the conventional electric energy day-ahead market comprise a start-stop plan and an output plan, and the electric power plan model is used for calculating the clearing results of the conventional electric energy day-ahead market;
and the determining module is used for obtaining the output result of the day-ahead electric energy market according to the output result of the day-ahead market of the conventional electric energy and the output result of the day-ahead market of the green energy.
In a third aspect, a computer device comprises a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:
obtaining a clearing result of the day-ahead market of the green energy according to a declaration result of the day-ahead market of the green energy; the declaration result comprises declaration data of green energy power generation enterprises and power utilization users, and the clearing result of the market before the green energy day comprises clearing electric quantity and clearing price;
taking the clearing result of the day-ahead market of the green energy as a boundary condition, and acquiring the clearing result of the day-ahead market of the conventional electric energy according to a preset electric power plan model and basic data; the basic data comprise parameter information of a power generation system, and the clearing result of the market before the day of the conventional electric energy comprises a start-stop plan and an output plan;
and obtaining the clearing result of the day-ahead electric energy market according to the clearing result of the day-ahead market of the conventional electric energy and the clearing result of the day-ahead market of the green energy.
In a fourth aspect, a computer readable storage medium having stored thereon a computer program which when executed by a processor implements the steps of:
obtaining a clearing result of the day-ahead market of the green energy according to a declaration result of the day-ahead market of the green energy; the declaration result comprises declaration data of green energy power generation enterprises and power utilization users, and the clearing result of the market before the green energy day comprises clearing electric quantity and clearing price;
taking the clearing result of the day-ahead market of the green energy as a boundary condition, and acquiring the clearing result of the day-ahead market of the conventional electric energy according to a preset electric power plan model and basic data; the basic data comprise parameter information of a power generation system, and the clearing result of the market before the day of the conventional electric energy comprises a start-stop plan and an output plan;
and obtaining the clearing result of the day-ahead electric energy market according to the clearing result of the day-ahead market of the conventional electric energy and the clearing result of the day-ahead market of the green energy.
The application provides a method, a device, equipment and a storage medium for clearing electric power based on green certificate transaction, which comprises the following steps: the computer equipment obtains the clearing result of the green energy day-ahead market according to the declaration result of the green energy day-ahead market, obtains the clearing result of the conventional electric energy day-ahead market according to a preset electric power plan model and basic data by taking the clearing result of the green energy day-ahead market as a boundary condition, and further obtains the clearing result of the day-ahead electric energy market according to the clearing result of the conventional electric energy day-ahead market and the clearing result of the green energy day-ahead market. In the electric power clearing method, the clearing result of the day-ahead electric energy market obtained by the computer equipment by applying the method comprises the clearing result of the day-ahead electric energy market and the clearing result of the day-ahead green energy market, so that the electric power clearing method based on green certificate transaction considers the transaction condition of the green certificate market, realizes the effective connection of the day-ahead electric energy market and the green energy market in a clearing mechanism, and finally completes the binding transaction of the green energy green certificate and the electric power.
Drawings
FIG. 1 is a schematic diagram illustrating an internal structure of a computer device according to an embodiment;
FIG. 2 is a flow diagram of a method for clearing power based on a green license transaction, according to an embodiment;
FIG. 3 is a schematic flow chart illustrating an implementation manner of S101 in the embodiment of FIG. 2;
FIG. 4 is a flowchart illustrating an implementation manner of S201 in the embodiment of FIG. 3;
FIG. 5 is a schematic diagram of an embodiment of a method for exporting the day-ahead market of green energy electricity;
FIG. 6 is a flowchart illustrating an implementation manner of S202 in the embodiment of FIG. 3;
fig. 7 is a schematic structural diagram of an electric power clearing device based on a green certificate transaction according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The electric power clearing method based on the green certificate transaction can be applied to computer equipment shown in fig. 1. The computer device may be a terminal, the internal structure of which may be as shown in fig. 1. The computer device includes a processor, a memory, a network interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a method for clearing power based on a green license transaction. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the architecture shown in fig. 1 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
The following describes in detail the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems by embodiments and with reference to the drawings. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 2 is a flowchart of an electric power clearing method based on green certificate trading according to this embodiment, the execution subject of the method is the computer device in fig. 1, and the method relates to a specific process of acquiring the clearing result of the day-ahead electric energy market by the computer device according to the clearing result of the green day-ahead market and the clearing result of the conventional electric energy day-ahead market. As shown in fig. 2, the method specifically includes the following steps:
s101, obtaining a clearing result of the day-ahead market of the green energy according to a declaration result of the day-ahead market of the green energy; the declaration result comprises declaration data of green energy power generation enterprises and power utilization users, and the clearing result of the market before the green energy day comprises clearing electric quantity and clearing price.
Among them, green energy is also called clean energy, which refers to energy that does not discharge pollutants and can be directly used for production and life, and it includes nuclear energy and "renewable energy". The renewable energy refers to energy sources which can be regenerated by raw materials, such as hydroelectric power generation, wind power generation, solar energy, biological energy (biogas), geothermal energy (including ground sources and water sources), sea tide energy and the like. The possibility of energy exhaustion does not exist in green energy, and therefore, the development and utilization of green energy are increasingly paid attention by many countries, especially the countries with energy shortage. The day-ahead market of green energy is a green certificate trading market, and is a day-ahead trading market for stimulating electricity users to consume green energy by a green certificate quota system. The green energy power generation enterprises are national regulations, and can release green certificates after power generation, and currently comprise wind power (onshore wind power) and photovoltaic power generation (without distributed photovoltaic projects). The declaration result of the green energy day-ahead market comprises declaration data of green energy power generation enterprises and power utilization users, wherein the declaration data comprises power generation capacity and market power demand of the green energy power generation enterprises according to the green energy power generation enterprises, next-day time-sharing power generation amount and corresponding price declared on the green energy day-ahead trading market, and next-day time-sharing power demand and price declared on the green energy day-ahead trading market according to the next-day power demand and own green certificate quota demand of the power utilization users. The clearing result of the green energy day-ahead market is used for expressing the result of the green energy power generation enterprise and the electricity utilization user trading on the green energy day-ahead market, and the trading result not only enables the green energy power generation enterprise to provide enough electric quantity and reasonable price, but also can meet the electricity utilization demand and price demand of the electricity utilization user, and further enables the green energy day-ahead market to achieve supply and demand balance.
In this embodiment, after a plurality of green energy power generation enterprises and a plurality of power consumers declare data in the market of green energy before the day, the computer device may obtain the amount of output and the price of output in the market of green energy before the day by analyzing the declared data. Optionally, the computer device may obtain an optimal electric quantity from the report data by analyzing the generated energy of each green energy power generation enterprise and the required electric quantity of each power consumer included in the report data, and obtain an optimal price from the optimal electric quantity as the output price of the green energy power generation enterprise and the required price of the power consumer included in the report data by analyzing the generated electricity price of the green energy power generation enterprise and the required price of the power consumer included in the report data.
S102, taking the clearing result of the day-ahead market of the green energy as a boundary condition, and obtaining the clearing result of the day-ahead market of the conventional electric energy according to a preset electric power plan model and basic data; the basic data comprises parameter information of the power generation system, and the clear results of the market before the day of the conventional electric energy comprise a start-stop plan and an output plan.
The basic data is used for representing parameter information of the power generation system, and specifically may include various parameter data, such as power generation system data, unit data, tie line plan data, load data, sensitivity data, and the like, and the power generation system data may include time interval information, system load, system standby requirements, and the like; the unit data can also comprise data such as unit basic information, unit calculation parameters, unit starting quotation, unit energy quotation, unit frequency modulation quotation, unit initial state, unit electric power constraint, unit climbing rate and the like; the tie line planning data may include tie line basic information, tie line planning power and other data; the load data can also comprise bus load prediction data and other data; the sensitivity data can also comprise data of generating transfer distribution factors of the unit, load injection power to the line and section tide.
The start-stop plan is used for indicating the type of the set of the power generation enterprise to start and stop, the time for starting and stopping the set and the number of the set to start and stop, so that the power generation enterprise can optimally design the operation of the set according to the start-stop plan, and the generated power quantity and the power generation cost of the set can meet the electric quantity and the electricity price required by the power generation enterprise. The output plan is used for indicating a power generation enterprise to start a certain type and a certain number of generator sets, and controlling the electric quantity and the power generation cost output by the generator sets to meet the electric quantity and the power price required by the power generation enterprise by setting the equipment parameters of the generator sets. The preset power plan model is used for enabling the computer equipment to obtain a start-stop plan and an output plan of the generator set according to the basic data, and enabling a power generation enterprise to optimally design the generator set according to the obtained start-stop plan and the output plan, so that the generated power quantity and the power generation cost of the generator set can meet the power quantity and the power price required by the power generation enterprise.
In this embodiment, after the computer device obtains the clearing result of the day-ahead market of green energy, if the clearing result fails to completely satisfy the requirement that the green energy power generation enterprise needs to sell the electric quantity, or the clearing result fails to completely satisfy the requirement that the power consumption user needs to purchase the electric quantity, the green energy power generation enterprise needs to enter the day-ahead market of conventional electric energy to sell the remaining electric quantity, or the power consumption user needs to enter the remaining electric quantity that the day-ahead market of conventional electric energy needs to purchase. For example, when a green energy power generation enterprise needs to sell electricity at 100 degrees, but sells electricity at 10 degrees in the market of green energy day ahead, the projected electricity selling plan cannot be completed, and thus, it is necessary to sell the remaining 90 degrees in the market of regular energy day ahead. Accordingly, for the electricity consumers who need to purchase 100 degrees of electricity, 10 degrees of electricity is purchased in the market of green energy before the day, but the purchased electricity cannot meet the requirements of the electricity consumers, so that the rest 90 degrees of electricity needs to be purchased in the market of conventional energy before the day.
When the green energy power generation enterprise and the electricity consumers perform power trading in the conventional electric energy day-ahead market, the computer equipment can use the clearing result of the green energy day-ahead market as a boundary condition, namely, according to the residual power requirements required by the green energy power generation enterprise and the electricity consumers, basic data is used as each parameter information in a preset power plan model and is input into the preset power plan model, the preset power plan model is solved, a start-stop plan and an output plan of the generator set are obtained through calculation, and the start-stop plan and the output plan are determined as the clearing result of the conventional electric energy day-ahead market.
And S103, obtaining the output result of the day-ahead electric energy market according to the output result of the day-ahead market of the conventional electric energy and the output result of the day-ahead market of the green energy.
In this embodiment, when the computer device calculates, according to the actual power selling situation of the green power generation enterprise and the actual power purchasing demand situation of the power consumer, the output and clear amount and the output and clear price of the green energy day-ahead market and the output and clear results of the conventional electric energy day-ahead market, that is, the start-stop plan and the output plan of the unit, the computer device determines the obtained output and clear amount and the output and clear price of the green energy day-ahead market and the output and clear results of the conventional electric energy day-ahead market as the output and clear results of the electric energy day-ahead market. Therefore, the output results of the day-ahead electric energy market include not only the electric power transaction results of the green power generation enterprises and the electricity consumers in the green energy day-ahead market, but also the electric power transaction results of the green power generation enterprises and the electricity consumers in the conventional electric energy day-ahead market.
According to the electric power clearing method based on green certificate trading, computer equipment obtains clearing results of a green energy day-ahead market according to declared results of the green energy day-ahead market, obtains clearing results of a conventional electric energy day-ahead market according to a preset electric power plan model and basic data by taking the clearing results of the green energy day-ahead market as boundary conditions, and further obtains clearing results of the day-ahead electric energy market according to the clearing results of the conventional electric energy day-ahead market and the clearing results of the green energy day-ahead market. In the electric power clearing method, the clearing result of the day-ahead electric energy market obtained by the computer equipment by applying the method comprises the clearing result of the day-ahead electric energy market and the clearing result of the day-ahead green energy market, so that the electric power clearing method based on green certificate transaction considers the transaction condition of the green certificate market, realizes the effective connection of the day-ahead electric energy market and the green energy market in a clearing mechanism, and finally completes the binding transaction of the green energy green certificate and the electric power.
In an embodiment, fig. 3 is a schematic flow chart of an implementation manner of S101 in the embodiment of fig. 2, and as shown in fig. 3, the above S101 "obtaining a clearing result of the green energy market before day according to a declaration result of the green energy market before day" includes the following steps:
s201, obtaining a target price difference between the quoted price of the green energy power generation enterprise and the quoted price of the power utilization user according to the declaration result of the green energy day-ahead market.
The target price difference refers to the price difference between the quoted price of the green energy power generation enterprise and the quoted price of the electricity consumer, and the price difference can meet the supply and demand requirements between the green energy power generation enterprise and the electricity consumer. In this embodiment, the computer device may extract quotes of a plurality of green energy power generation enterprises and quotes of a plurality of electricity consumers from the declaration result of the green energy market in the future, perform difference operation on the quotes of the green energy power generation enterprises and the quotes of the electricity consumers to obtain a plurality of price differences between the quotes of the green energy power generation enterprises and the quotes of the electricity consumers, and further determine a target price difference according to the price differences so that the target price difference can meet the demand and supply requirements between the green energy power generation enterprises and the electricity consumers.
S202, determining the clearing result of the market of the green energy in the day ahead according to the target price difference.
In this embodiment, the target price difference corresponds to the clearing power of a market of green energy in the day ahead and the clearing price of the market of green energy in the day ahead, so that when the computer device determines a target price difference, the clearing result including the clearing power and the clearing price can be further determined according to the target price difference. It should be noted that the target price difference may be equal to 0 or not equal to 0, and when the target price difference is equal to 0, it is indicated that the price quoted by the green energy power generation enterprise is the same as the price quoted by the electricity consumer, so that the price quoted at this time can meet the power supply requirement of the green energy power generation enterprise and the electricity demand of the consumer, and can be directly determined as the clearing price corresponding to the target price difference; when the target price difference is not equal to 0, the quotation of the green energy power generation enterprise is different from the quotation of the electricity utilization user, at the moment, the quotation of the green energy power generation enterprise and the quotation of the electricity utilization user need to be considered in a balanced manner, the quotation which can meet the power supply requirements of the green energy power generation enterprise and the electricity utilization requirements of the user is finally obtained, and the quotation is determined as the clearing price corresponding to the target price difference.
In an embodiment, optionally, fig. 4 is a schematic flowchart of an implementation manner of S201 in the embodiment of fig. 3, and as shown in fig. 4, the S201 "obtaining a target price difference between the quote of the green energy power generation enterprise and the quote of the electricity consumer according to a declaration result of a market before the green energy day" includes the following steps:
s301, sequencing the quotations of the plurality of green energy power generation enterprises from low to high to obtain the sequenced first quotations.
S302, the quotations of the electricity users are sorted from high to low to obtain the sorted second quotations.
And S303, carrying out difference value operation on each first quote and each corresponding second quote to obtain price differences between quotes of a plurality of green energy power generation enterprises and quotes of power users.
And S304, determining the minimum price difference as a target price difference.
The above steps S301 to S304 are exemplarily explained, assuming that there are A, B, C, D, E, 5 green energy power generation enterprises and a, b, c, d, e, 5 consumers who need to trade electric power in the market of green energy day ahead, and their declaration data includes: A. b, C, D, E, the power generation enterprises need to sell the generated energy of 100 degrees electricity, and the corresponding first offers are 20, 22, 19, 21 and 23 respectively; a. the electricity consumption users of b, c, d and e need to purchase 100 degrees of electricity, the corresponding second quotations are 19, 22, 16, 14 and 20 respectively, and the first quotations are sorted from low to high as: 19. 20, 21, 22, 23; ordering the second offer from high to low as: 14. 16, 19, 20, 22; the computer device may then perform a difference operation on the two sets of quotes to obtain a plurality of prices as: 5. 4, 3, 2 and 1, and extracting the minimum price difference 1 from the price differences by the computer equipment as a target price difference.
For another example, the computer device may also present the calculation process and the calculation result of the above steps S301 to S304 to the user in a curved manner. For example, based on the above example, after ranking the quoted prices of the green energy generation enterprises and ranking the quoted prices of the electricity consumers, the computer device may generate a curve as shown in fig. 5 according to the ranked data, so that the user may intuitively obtain the clearing price corresponding to the target price difference from the curve. Wherein the abscissa in the figure represents A, B, C, D, E power generation enterprises and a, b, c, d, e electricity consumers; the ordinate represents the price quotes of the power generation enterprises of A, B, C, D, E and the electricity consumers of a, b, c, d, e; the target price difference is a vertical coordinate difference value between the M point and the N point, and the Z point represents the clearing price corresponding to the target price difference.
In an embodiment, optionally, fig. 6 is a schematic flowchart of an implementation manner of S202 in the embodiment of fig. 3, and as shown in fig. 6, the step S202 "determining a clearing result of the market of green energy before day according to the target price difference" includes the following steps:
s401, determining the arithmetic mean value between the quotation of the green energy power generation enterprise corresponding to the target price difference and the quotation of the power utilization user as the clearing price of the green energy day-ahead market.
In this embodiment, when the target price difference obtained by the computer device is equal to 0, the offer of the green energy power generation enterprise or the offer of the electricity consumer corresponding to the target price difference may be directly used as the clearing price; when the target price difference obtained by the computer device is not equal to 0, and the obtained target price difference is 1 as in the above example, the average of the arithmetic numbers (the arithmetic number average calculated in the above example is 22.5) of the price of the green energy generation enterprise corresponding to the target price difference 1 (the price is 23 in the above example) and the price of the electricity consumer corresponding to the target price difference 1 (the price is 22 in the above example) may be taken as the clearing price of the green energy market, and then the arithmetic number average (22.5 in the above example) may be taken as the clearing price of the green energy market.
S402, determining the generated energy of the green energy power generation enterprises or the power demand of the power utilization users corresponding to the target price difference as the output clear energy of the market of the green energy in the day ahead.
In this embodiment, after the computer device obtains the target price difference, the generated energy of the green energy power generation enterprise or the electricity demand of the electricity consumer corresponding to the calculation of the target price difference may be directly determined as the output and clear electricity of the market of the green energy resource day ahead, for example, referring to the example in the above embodiment, when the generated energy of each power generation enterprise or the electricity demand required by the electricity consumer corresponding to the target price difference in the example related to the above embodiment is 100 degrees of electricity, the computer device may directly determine the 100 degrees of electricity as the output and clear electricity of the market of the green energy resource day ahead.
According to the electric power clearing method based on green license transaction, the computer equipment obtains the target price difference between the quoted price of the green energy power generation enterprise and the quoted price of the electricity utilization user according to the declaration result of the green energy day-ahead market; and determining the clearing result of the market of the green energy before the day according to the target price difference. In the method, the computer equipment further acquires the clearing result of the green energy day-ahead market by acquiring the target price difference between the quoted price of the green energy power generation enterprise and the quoted price of the electricity consumer, so that the finally obtained clearing result can meet the supply and demand requirements between the green energy power generation enterprise and the electricity consumer.
Alternatively, as described in S102 in the embodiment of fig. 2, when the computer device obtains the clearing result of the conventional electric energy day-ahead market according to the preset electric power planning model and the basic data by using the clearing result of the green energy day-ahead market as a boundary condition, the preset electric power planning model adopted therein may include: the safety constraint unit combination objective function, the safety constraint economic dispatching objective function, a first constraint condition and a second constraint condition;
the safety constraint unit combination objective function is used for obtaining a start-stop plan of the unit, and a first constraint condition corresponding to the start-stop plan is used for constraining the safety constraint unit combination objective function so that the electricity purchasing cost output by the safety constraint unit combination objective function is minimum; the safety constraint economic dispatching objective function is used for obtaining the output plan of the unit, and the second constraint condition corresponding to the output plan is used for constraining the safety constraint economic dispatching objective function, so that the electricity purchasing cost output by the safety constraint economic dispatching objective function is minimum.
Illustratively, the safety constraint unit combination objective function is used for obtaining a start-stop plan of the unit, so that the output electricity purchasing cost is minimum; the safety constraint unit combination objective function may specifically include the following relational expression (1) or a variant thereof:
Figure BDA0001870785190000171
wherein N represents the total number of the units; t represents the total number of time segments considered; for example, the number of periods may be 96 periods; pi,tRepresenting unit i during time tForce is exerted; ci,t(Pi,t)、
Figure BDA0001870785190000172
The running cost, the starting cost and the shutdown cost of the unit i in the time period t are respectively, wherein the unit running cost Ci,t(Pi,t) Is a multi-segment linear function of the unit output.
Illustratively, the first constraint conditions corresponding to the safety constraint unit combination objective function include formula (3) to formula (18), wherein the first system constraint conditions include formula (3) to formula (9):
Figure BDA0001870785190000181
wherein, Pi,tRepresenting the output of the unit i in the time period t, DtSystem load for time period t;
Figure BDA0001870785190000182
wherein alpha isi,tRepresenting the starting and stopping states of the unit i in the time period t, alphai,t0 denotes a unit shutdown, αi,t1 represents the starting of the unit;
Figure BDA0001870785190000183
representing the maximum output of the unit i in a time period t;
Figure BDA0001870785190000184
represents the positive reserve capacity requirement of the system during the period t; dtRepresents the system load for the t period;
Figure BDA0001870785190000185
wherein the content of the first and second substances,
Figure BDA0001870785190000186
representing the minimum of the unit i in the t periodForce is exerted;
Figure BDA0001870785190000187
the system negative spare capacity requirement representing the t period; dtRepresents the system load for the t period;
Figure BDA0001870785190000188
Figure BDA0001870785190000189
wherein, Δ Pi URepresenting the maximum rate of ascent, Δ P, of the unit ii DRepresenting the maximum downward climbing speed of the unit i;
Figure BDA00018707851900001810
respectively representing the maximum output and the minimum output of the unit i in the time period t;
Figure BDA00018707851900001811
respectively representing the up-regulation and down-regulation rotation standby requirements in the time period t; pi,tRepresenting the output of the unit i in the time period t;
Figure BDA00018707851900001812
Figure BDA00018707851900001813
wherein the content of the first and second substances,
Figure BDA00018707851900001814
respectively representing AGC up-regulation and AGC down-regulation which can be provided by the unit i in a time period t for standby;
Figure BDA00018707851900001815
respectively representing the backup requirements of AGC up-regulation and down-regulation in the t period;
illustratively, the first set of constraints in the first constraints includes equations (10) through (16):
Figure BDA0001870785190000191
wherein alpha isi,tRepresenting the starting and stopping states of the unit i in the time period t, alphai,t0 denotes a unit shutdown, αi,t1 represents the starting of the unit;
Figure BDA0001870785190000192
respectively representing the maximum output and the minimum output of the unit i in the time period t;
Figure BDA0001870785190000193
Figure BDA0001870785190000194
wherein, Δ Pi URepresenting the maximum rate of ascent, Δ P, of the unit ii DRepresenting the maximum downward climbing speed of the unit i; other parameters are as described above;
Figure BDA0001870785190000195
Figure BDA0001870785190000196
Figure BDA0001870785190000197
Figure BDA0001870785190000198
wherein，αi,tRepresenting the starting and stopping states of the unit i in a time period t; t isU、TDRepresenting a minimum continuous start-up time and a minimum continuous shutdown time of the unit;
Figure BDA0001870785190000199
representing the time that the unit i is continuously started and stopped in the time period t;
illustratively, the first network security constraints of the first constraints include formula (17) and formula (18):
Figure BDA00018707851900001910
wherein, Pl maxIs the tidal current transmission limit of line l; gl-iOutputting a power transfer distribution factor for a generator of a line l by a node where a unit i is located; k is the number of nodes of the system; gl-kA generator output power transfer distribution factor for node k to line l; dk,tIs the bus load value of the node k in the time period t;
Figure BDA0001870785190000201
wherein, Ps min、Ps maxRespectively the tidal current transmission limit of the section s; gs-iThe generator output power of the section s is transferred to a distribution factor for the node where the unit i is located; gs-kThe generator output power transfer distribution factor is node k to section s.
Illustratively, the safety constraint economic dispatching objective function is used for obtaining an output plan of the unit, so that the output electricity purchasing cost is minimum; the safety-constrained economic scheduling objective function may specifically include the following relation (2) or a variant thereof:
Figure BDA0001870785190000202
wherein, N is shown inDisplaying the total number of the units; t represents the total number of time periods considered, which may be 96 time periods, for example; pi,tRepresenting the output of the unit i in the time period t; ci,t(Pi,t) The running cost of the unit i in the time period t is represented and is a multi-segment linear function of the unit output.
Illustratively, the second constraint corresponding to the safety-constrained economic scheduling objective function includes formula (19) to formula (23), wherein the second system constraint includes formula (19):
Figure BDA0001870785190000203
wherein, Pi,tRepresenting the output of the unit i in the time period t, DtRepresents the system load for the t period;
illustratively, the second set of constraints included in the second constraints include equations (20) and (21):
Figure BDA0001870785190000204
wherein alpha isi,tRepresenting the starting and stopping states of the unit i in the time period t, alphai,t0 denotes a unit shutdown, αi,t1 represents the starting of the unit;
Figure BDA0001870785190000205
respectively the maximum output and the minimum output of the unit i in the time period t;
ΔPi D≤Pi,t-Pi,t-1≤ΔPi U (21)；
wherein, Δ Pi UFor the unit i maximum climbing rate, Δ Pi DThe maximum downward climbing speed of the unit i;
illustratively, the second network security constraints included in the second constraints include formula (22) and formula (23):
Figure BDA0001870785190000211
wherein, Pl maxIs the tidal current transmission limit of line l; gl-iOutputting a power transfer distribution factor for a generator of a line l by a node where a unit i is located; k is the number of nodes of the system; gl-kA generator output power transfer distribution factor for node k to line l; dk,tIs the bus load value of the node k in the time period t;
Figure BDA0001870785190000212
wherein, Ps min、Ps maxRespectively the tidal current transmission limit of the section s; gs-iThe generator output power of the section s is transferred to a distribution factor for the node where the unit i is located; gs-kThe generator output power transfer distribution factor is node k to section s.
It should be noted that all the parameters in the formulas (1) to (23) are parameter information included in the basic data described in the embodiment S102, and when the computer device calculates the clearance result of the conventional electric energy day-ahead market by using the formulas (1) to (23), the computer device may first obtain the parameters required by the formulas (1) to (23) from the basic data, and then solve the formulas (1) to (23) to obtain the clearance result of the conventional electric energy day-ahead market.
In summary, the computer device calculates the start-stop plan of the unit according to the formulas (1) to (18), and on the basis, the computer device calculates the output plan of the unit according to the formulas (19) to (23), so as to jointly form the output result of the market before the day of the conventional electric energy. And finally, combining the obtained clearing result of the day-ahead green energy market calculated by the computer equipment according to the method described in the embodiment of fig. 2-6 to obtain the clearing result of the day-ahead green energy market including green certificate trading. The electric power clearing method based on green certificate trading promotes popularization of green power generation enterprises to green energy resources on the one hand, and improves consumption capacity of power utilization users to the green energy resources on the other hand.
It should be understood that although the various steps in the flow charts of fig. 2-6 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2-6 may include multiple sub-steps or phases that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or phases is not necessarily sequential.
In one embodiment, as shown in fig. 7, there is provided a power clearing apparatus based on a green certificate transaction, including: an obtaining module 11, a calculating module 12 and a determining module 13, wherein:
the acquisition module 11 is configured to acquire a clearing result of the green energy day-ahead market according to a declaration result of the green energy day-ahead market; the declaration result comprises declaration data of green energy power generation enterprises and power utilization users, and the clearing result of the market before the green energy day comprises clearing electric quantity and clearing price;
the calculation module 12 is used for acquiring the clearing result of the day-ahead market of the conventional electric energy according to a preset electric power plan model and basic data by taking the clearing result of the day-ahead market of the green energy as a boundary condition; the basic data comprise parameter information of a power generation system, the clearing results of the conventional electric energy day-ahead market comprise a start-stop plan and an output plan, and the electric power plan model is used for calculating the clearing results of the conventional electric energy day-ahead market;
and the determining module 13 is used for obtaining the output result of the day-ahead electric energy market according to the output result of the day-ahead market of the conventional electric energy and the output result of the day-ahead market of the green energy.
The above embodiments provide a power clearing device based on green certificate transaction, which has similar implementation principle and technical effect to the above method embodiments, and is not cumbersome here.
For specific definition of the electric power clearing device based on green certificate transaction, reference may be made to the above definition of an electric power clearing method based on green certificate transaction, and details are not described here. The various modules in the above-mentioned electric power clearing device based on green certificate transaction can be wholly or partially realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
obtaining a clearing result of the day-ahead market of the green energy according to a declaration result of the day-ahead market of the green energy; the declaration result comprises declaration data of green energy power generation enterprises and power utilization users, and the clearing result of the market before the green energy day comprises clearing electric quantity and clearing price;
taking the clearing result of the day-ahead market of the green energy as a boundary condition, and acquiring the clearing result of the day-ahead market of the conventional electric energy according to a preset electric power plan model and basic data; the basic data comprise parameter information of a power generation system, and the clearing result of the market before the day of the conventional electric energy comprises a start-stop plan and an output plan;
and obtaining the clearing result of the day-ahead electric energy market according to the clearing result of the day-ahead market of the conventional electric energy and the clearing result of the day-ahead market of the green energy.
The implementation principle and technical effect of the computer device provided by the above embodiment are similar to those of the above method embodiment, and are not described herein again.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, the computer program, when executed by a processor, further implementing the steps of:
obtaining a clearing result of the day-ahead market of the green energy according to a declaration result of the day-ahead market of the green energy; the declaration result comprises declaration data of green energy power generation enterprises and power utilization users, and the clearing result of the market before the green energy day comprises clearing electric quantity and clearing price;
taking the clearing result of the day-ahead market of the green energy as a boundary condition, and acquiring the clearing result of the day-ahead market of the conventional electric energy according to a preset electric power plan model and basic data; the basic data comprise parameter information of a power generation system, and the clearing result of the market before the day of the conventional electric energy comprises a start-stop plan and an output plan;
and obtaining the clearing result of the day-ahead electric energy market according to the clearing result of the day-ahead market of the conventional electric energy and the clearing result of the day-ahead market of the green energy.
The implementation principle and technical effect of the computer-readable storage medium provided by the above embodiments are similar to those of the above method embodiments, and are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), synchronous Link (Synchlink) DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A power clearing method based on green certificate transaction is characterized by comprising the following steps:
obtaining a clearing result of the day-ahead market of the green energy according to a declaration result of the day-ahead market of the green energy; the declaration result comprises declaration data of green energy power generation enterprises and power utilization users, and the clearing result of the market before the green energy day comprises clearing electric quantity and clearing price; the declaration data comprises the time-sharing power generation amount and the corresponding price declared by the green energy power generation enterprises on the next day in the trading market before the green energy day according to the self power generation capacity and market power demand, and the time-sharing power demand and the price declared by the power consumers on the next day in the trading market before the green energy day according to the power demand on the next day and the self green certificate quota demand;
taking the clearing result of the day-ahead market of the green energy as a boundary condition, and acquiring the clearing result of the day-ahead market of the conventional electric energy according to a preset electric power plan model and basic data; the basic data comprise parameter information of a power generation system, and the clearing result of the market before the day of the conventional electric energy comprises a start-stop plan and an output plan; the start-stop plan is used for indicating the type of the generator set, the time for starting and stopping the generator set and the number of the start-stop generator set of the generator enterprise; the output plan is used for indicating the power generation enterprises to control the electric quantity and the power generation cost output by the generator sets to meet the electric quantity and the power price required by the power generation enterprises by setting equipment parameters of the generator sets when the generator sets of a certain type and a certain number are started by the power generation enterprises;
and obtaining the clearing result of the day-ahead electric energy market according to the clearing result of the day-ahead market of the conventional electric energy and the clearing result of the day-ahead market of the green energy.
2. The method according to claim 1, wherein the obtaining of the clearing result of the green energy resource day-ahead market according to the declaration result of the green energy resource day-ahead market comprises:
according to the declaration result of the day-ahead market of the green energy, acquiring a target price difference between the quoted price of the green energy power generation enterprise and the quoted price of the power utilization user;
and determining the clearing result of the day-ahead market of the green energy according to the target price difference.
3. The method according to claim 2, wherein the obtaining of the target price difference between the quote of the green energy power generation enterprise and the quote of the electricity consumer according to the declaration result of the green energy day-ahead market comprises:
sequencing the quotations of the plurality of green energy power generation enterprises from low to high to obtain sequenced first quotations;
sequencing the quotations of the plurality of electricity users from high to low to obtain sequenced second quotations;
performing difference value operation on each first quoted price and each corresponding second quoted price to obtain price differences between quoted prices of a plurality of green energy power generation enterprises and quoted prices of power users; the smallest price difference is determined as the target price difference.
4. The method according to claim 2 or 3, wherein said determining the clearing result of the green energy source day-ahead market according to the target price difference comprises:
determining an arithmetic average value between the quoted price of the green energy power generation enterprise corresponding to the target price difference and the quoted price of the power utilization user as a clearing price of the green energy day-ahead market;
and determining the generated energy of the green energy power generation enterprises or the power demand of the power consumers corresponding to the target price difference as the output clear energy of the market of the green energy in the day ahead.
5. The method of claim 1, wherein the pre-set power plan model comprises: the safety constraint unit combination objective function, the safety constraint economic dispatching objective function, a first constraint condition and a second constraint condition; the safety constraint unit combination objective function is used for obtaining a start-stop plan of a unit, the safety constraint economic dispatching objective function is used for obtaining an output plan of the unit, the first constraint condition is used for constraining the safety constraint unit combination objective function to enable the electricity purchasing cost output by the safety constraint unit combination objective function to be minimum, and the second constraint condition is used for constraining the safety constraint economic dispatching objective function to enable the electricity purchasing cost output by the safety constraint economic dispatching objective function to be minimum.
6. The method of claim 5, wherein the safety constrained fleet combination objective function is given by equation (1):
Figure FDA0002783568170000031
wherein N represents the total number of the units; t represents the total number of time segments considered; pi,tRepresenting the output of the unit i in the time period t; ci,t(Pi,t)、
Figure FDA0002783568170000032
Are respectively a unit iOperating costs, start-up costs and shutdown costs in a time period t, wherein the unit operating costs Ci,t(Pi,t) Is a multi-segment linear function of the unit output;
the safety constraint economic dispatching objective function is formula (2):
Figure FDA0002783568170000033
7. the method of claim 5, wherein the first constraint comprises a first system constraint, a first fleet constraint, a first network security constraint; wherein the content of the first and second substances,
the first system constraint includes formula (3) to formula (9):
Figure FDA0002783568170000034
wherein, Pi,tRepresenting the output of the unit i in the time period t, DtRepresents the system load for the t period;
Figure FDA0002783568170000035
wherein alpha isi,tRepresenting the starting and stopping states of the unit i in the time period t, alphai,t0 denotes a unit shutdown, αi,t1 represents the starting of the unit;
Figure FDA0002783568170000036
representing the maximum output of the unit i in a time period t;
Figure FDA0002783568170000037
represents the positive reserve capacity requirement of the system during the period t;
Figure FDA0002783568170000038
wherein the content of the first and second substances,
Figure FDA0002783568170000039
representing the minimum output of the unit i in a t period;
Figure FDA00027835681700000311
the system negative spare capacity requirement representing the t period;
Figure FDA00027835681700000310
Figure FDA0002783568170000041
wherein, Δ Pi URepresenting the maximum rate of ascent, Δ P, of the unit ii DRepresenting the maximum downward climbing speed of the unit i;
Figure FDA0002783568170000042
respectively representing the up-regulation and down-regulation rotation standby requirements in the time period t;
Figure FDA0002783568170000043
Figure FDA0002783568170000044
wherein the content of the first and second substances,
Figure FDA0002783568170000045
respectively representing AGC up-regulation and AGC down-regulation which can be provided by the unit i in a time period t for standby;
Figure FDA0002783568170000046
respectively representing the backup requirements of AGC up-regulation and down-regulation in the t period;
the first set of constraints comprises equations (10) through (16):
Figure FDA0002783568170000047
Figure FDA0002783568170000048
Figure FDA0002783568170000049
Figure FDA00027835681700000410
Figure FDA00027835681700000411
Figure FDA00027835681700000412
Figure FDA00027835681700000413
wherein, TU、TDRepresenting a minimum continuous start-up time and a minimum continuous shutdown time of the unit;
Figure FDA00027835681700000414
representing the time that the unit i is continuously started and stopped in the time period t;
the first network security constraint includes equation (17) and equation (18):
Figure FDA00027835681700000415
wherein, Pl maxIs the tidal current transmission limit of line l; gl-iOutputting a power transfer distribution factor for a generator of a line l by a node where a unit i is located; k is the number of nodes of the system; gl-kA generator output power transfer distribution factor for node k to line l; dk,tIs the bus load value of the node k in the time period t;
Figure FDA0002783568170000051
wherein, Ps min、Ps maxRespectively the tidal current transmission limit of the section s; gs-iThe generator output power of the section s is transferred to a distribution factor for the node where the unit i is located; gs-kThe distribution factor of the output power transfer of the generator is the node k to the section s;
the second constraint condition comprises a second system constraint condition, a second unit constraint condition and a second network security constraint condition; wherein the content of the first and second substances,
the second system constraint includes equation (19):
Figure FDA0002783568170000052
the second unit constraints include formula (20) and formula (21):
Figure FDA0002783568170000053
ΔPi D≤Pi,t-Pi,t-1≤ΔPi U (21)；
the second network security constraint includes formula (22) and formula (23):
Figure FDA0002783568170000054
Figure FDA0002783568170000055
8. an electric power clearing device based on green certificate transaction, the device comprising:
the acquisition module is used for acquiring the clearing result of the day-ahead green energy market according to the declaration result of the day-ahead green energy market; the declaration result comprises declaration data of green energy power generation enterprises and power utilization users, and the clearing result of the market before the green energy day comprises clearing electric quantity and clearing price; the declaration data comprises the time-sharing power generation amount and the corresponding price declared by the green energy power generation enterprises on the next day in the trading market before the green energy day according to the self power generation capacity and market power demand, and the time-sharing power demand and the price declared by the power consumers on the next day in the trading market before the green energy day according to the power demand on the next day and the self green certificate quota demand;
the calculation module is used for acquiring the clearing result of the day-ahead market of the conventional electric energy according to a preset electric power plan model and basic data by taking the clearing result of the day-ahead market of the green energy as a boundary condition; the basic data comprise parameter information of a power generation system, the clearing results of the conventional electric energy day-ahead market comprise a start-stop plan and an output plan, and the electric power plan model is used for calculating the clearing results of the conventional electric energy day-ahead market; the start-stop plan is used for indicating the type of the generator set, the time for starting and stopping the generator set and the number of the start-stop generator set of the generator enterprise; the output plan is used for indicating the power generation enterprises to control the electric quantity and the power generation cost output by the generator sets to meet the electric quantity and the power price required by the power generation enterprises by setting equipment parameters of the generator sets when the generator sets of a certain type and a certain number are started by the power generation enterprises;
and the determining module is used for obtaining the output result of the day-ahead electric energy market according to the output result of the day-ahead market of the conventional electric energy and the output result of the day-ahead market of the green energy.
9. A computer device comprising a memory and a processor, the memory storing a computer program, wherein the processor implements the steps of the method of any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
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