CN111768127A - Method and system for determining peak shaving auxiliary service cost allocation correction coefficient - Google Patents

Method and system for determining peak shaving auxiliary service cost allocation correction coefficient Download PDF

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CN111768127A
CN111768127A CN202010708109.6A CN202010708109A CN111768127A CN 111768127 A CN111768127 A CN 111768127A CN 202010708109 A CN202010708109 A CN 202010708109A CN 111768127 A CN111768127 A CN 111768127A
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任景
薛晨
马晓伟
吴春燕
张小东
何凯
陈雨果
薛斌
汪洋
王鹏
李俊
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Northwest Branch Of State Grid Power Grid Co
Beijing Tsintergy Technology Co ltd
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Beijing Tsintergy Technology Co ltd
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Abstract

The invention discloses a method and a system for determining a peak shaving auxiliary service cost sharing correction coefficient, wherein the method comprises the following steps: determining the wind and light unit allocation correction coefficient by taking the number of hours of guaranteed procurement utilization as a reference, and calculating the power generation amount of the wind and light units participating in allocation after correction; calculating the peak shaving cost of the thermal power generating unit i according to the corrected generated energy of the wind and light generating unit; calculating the net peak regulation utility of the thermal power generating unit i; and enabling the net peak regulation effectiveness to be larger than 0 and enabling peak regulation capacity apportionment cost not borne by each unit to be equal, and determining the peak regulation auxiliary service cost apportionment correction coefficient of the thermal power generating unit. The method and the system for determining the peak shaving auxiliary service cost sharing correction coefficient provided by the invention aim at the problem of peak shaving market cost sharing, and overcome the defect that the sharing result is lack of rationality due to the fact that the sharing correction coefficient is manually determined in the prior art on the basis of the peak shaving cost sharing method according to the principle that the profitability and the sharing ratio are in positive correlation.

Description

Method and system for determining peak shaving auxiliary service cost allocation correction coefficient
Technical Field
The invention relates to the technical field of power grid peak shaving, in particular to a method and a system for determining a peak shaving auxiliary service cost apportionment correction coefficient.
Background
The auxiliary service means that the electric power market can provide additional services beyond normal electric energy generation, transmission and use in order to ensure safe and reliable operation of an electric power system and quality of electric power commodities. All power plants have obligations and responsibilities for undertaking power grid peak regulation, and for the power plants which do not undertake or cannot undertake the power grid peak regulation, the power plants are used as distributors for undertaking the cost of peak regulation requirements. The allocated amount is closely related to the generated energy, the peak-shaving allocated amount of each power plant is in positive correlation with the generated energy, and meanwhile, the electric quantity correction needs to be carried out by combining different power types. However, in the prior art, the unit electric quantity correction coefficient in the peak shaving cost allocation method is generally determined manually, so that the allocation result is lack of rationality.
Disclosure of Invention
The invention aims to provide a method for determining a peak shaving auxiliary service cost allocation correction coefficient, which aims at the problem of peak shaving market cost allocation and overcomes the defect that the allocation result is lack of rationality due to the fact that the allocation correction coefficient is manually determined in the prior art on the basis of the peak shaving cost allocation method according to the principle that the profitability and the allocation ratio are in positive correlation.
In order to overcome the defects in the prior art, an embodiment of the present invention provides a method for determining a peak shaving auxiliary service cost apportionment correction coefficient, including:
determining the wind and light unit allocation correction coefficient by taking the number of hours of guaranteed procurement utilization as a reference, and calculating the power generation amount of the wind and light units participating in allocation after correction;
calculating the peak shaving cost of the thermal power generating unit i according to the corrected generated energy of the wind and light generating unit; calculating the net peak regulation utility of the thermal power generating unit i;
and enabling the net peak regulation effectiveness to be larger than 0 and enabling peak regulation capacity apportionment cost not borne by each unit to be equal, and determining the peak regulation auxiliary service cost apportionment correction coefficient of the thermal power generating unit.
Further, determining a wind and light unit allocation correction coefficient by taking the guaranteed procurement utilization hours as a reference, and calculating the power generation amount of the wind and light units participating in allocation after correction; specifically, the following formula is adopted:
Figure BDA0002594957680000021
kN＝0.9n；EN_i＝BN_i×kN；
wherein, TeNumber of hours for warranty acquisition, TsTo make practical use of the hours, kNThe wind and light set apportions the correction coefficient; eN_iCorrecting the electric quantity for the wind and light set; b isN_iActual generating capacity of the wind and light set;
the wind and light generating set with the allocation proportion being properly reduced below the guaranteed acquisition hours and the wind and light generating set with the allocation proportion being properly increased above the guaranteed acquisition hours.
Further, calculating the thermal power generating unit i apportioned peak shaving cost according to the power generation amount corrected by the wind and light generating unit, and specifically adopting the following formula:
Figure BDA0002594957680000022
wherein D isf_iCorrected power generation capacity for thermal power generating unit i, Bf_jActual power generation amount k of the fire electric machine set of the jth gearjCorrection factor for the j-th gear ∑ Df_i∑ E for the corrected total power generation of all the thermal power generating units participating in the sharingN-iThe corrected total power generation capacity of all the wind and light units participating in the sharing is obtained; a is the peak shaving total amount to be allocated; a. theiThe thermal power generating unit i distributes the peak shaving cost; and m represents that m grades are divided according to the increase of the load rate of the thermal power generating unit on the basis of the compensated peak regulation reference, and the sharing proportion is increased sequentially.
Further, the peak shaving utility of the thermal power generating unit i is calculated as follows: the difference between the generation benefit after purchasing peak shaver capacity and the generation benefit without purchasing peak shaver capacity.
Further, the calculating of the peak shaving utility of the thermal power generating unit i is a difference value between the power generation income after the peak shaving capacity is purchased and the power generation income when the peak shaving capacity is not purchased, and specifically includes:
generating revenue C when peak shaving capacity is not purchasedj,1Comprises the following steps: ci,1＝ρBG_d(Pi 0-Pi *)-Fi(Pi 0-Pi *)；
Where ρ isBG_dMarking the power price of the power grid; pi 0Generating output for the plan of the unit i; pi *The peak shaving capacity which needs to be borne by the unit i when the peak shaving capacity is not purchased; fi(. h) is the secondary cost function of the generation of unit j;
Fithe expression is as follows: fi(Pi)＝aiPi 2+biPi+ci(ii) a Wherein, PiIs the actual generated output of the unit i, ai、bi、ciThe power generation cost function coefficient of the unit i is obtained;
after purchasing peak shaving capacity, the revenue of electricity generation Ci,2Comprises the following steps: ci,2＝ρBG_dPi 0-Fi(Pi0)；
The peak regulation effect of the thermal power generating unit i is as follows: ci＝Ci,2-Ci,1＝ρBG_dPi *-(Fi(Pi 0)-Fi(Pi 0-Pi *))。
Further, determining a peak shaving auxiliary service cost allocation correction coefficient of the thermal power generating unit according to the fact that the net peak shaving utility is greater than 0 and the peak shaving capacity allocation cost not borne by each unit is equal, wherein the method comprises the following steps of:
Figure BDA0002594957680000031
in the formula (I), the compound is shown in the specification,
Figure BDA0002594957680000032
indicating net peak shaving utility of unit i, AiIndicating peak shaving cost, P, allocated to unit ii *Representing the peak shaving capacity which needs to be borne by the unit i when the peak shaving capacity is not purchased; wherein, the net peak regulation utility of thermal power generating unit is:
Figure BDA0002594957680000033
indicating the peak shaving utility of the unit i.
The embodiment of the invention also provides a system for determining the peak shaving auxiliary service cost allocation correction coefficient, which comprises the following steps:
the wind and light unit apportionment correction coefficient calculation unit is used for determining the wind and light unit apportionment correction coefficient by taking the guaranteed purchase utilization hours as a reference, and calculating the generated energy of the wind and light units participating in apportionment after correction;
the net peak regulation utility calculation unit is used for calculating the peak regulation cost of the thermal power generating unit i according to the corrected generated energy of the wind and light generating unit; calculating the net peak regulation utility of the thermal power generating unit i;
and the thermal power generating unit allocation correction coefficient calculation unit is used for enabling the net peak regulation effectiveness to be larger than 0 and enabling peak regulation capacity allocation cost not borne by each unit to be equal, and determining the thermal power generating unit peak regulation auxiliary service cost allocation correction coefficient.
Further, the net peak shaving utility calculating unit is further configured to calculate the peak shaving utility of the thermal power generating unit i according to a difference between the power generation income after the peak shaving capacity is purchased and the power generation income when the peak shaving capacity is not purchased.
An embodiment of the present invention further provides a computer terminal device, including:
one or more processors;
a memory coupled to the processor for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement a method of determining a peaking assist service cost apportionment correction factor as described above.
Embodiments of the present invention also provide a computer-readable storage medium having a computer program stored thereon, where the computer program is executed by a processor to implement the method for determining a peak shaving assistance service cost allocation correction factor as described above.
Compared with the prior art, the method and the device aim at the problem of peak-shaving market expense allocation, on the basis of the peak-shaving expense allocation method, the defect that the allocation result is lack of rationality due to the fact that the allocation correction coefficient is determined manually in the prior art is overcome according to the principle that the profitability and the allocation ratio are in positive correlation.
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Fig. 1 is a schematic flow chart of a method for determining a peak shaving auxiliary service cost share correction factor according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a system for determining a peak shaving auxiliary service cost share correction factor according to an embodiment of the present invention.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be understood that the step numbers used herein are for convenience of description only and are not intended as limitations on the order in which the steps are performed.
It is to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The terms "comprises" and "comprising" indicate the presence of the described features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
The term "and/or" refers to and includes any and all possible combinations of one or more of the associated listed items.
Referring to fig. 1, an embodiment of the present invention provides a method for determining a peak shaving auxiliary service cost allocation correction coefficient, including:
s10, determining the wind and light unit allocation correction coefficient by taking the guaranteed procurement utilization hours as a reference, and calculating the power generation amount of the wind and light units participating in allocation after correction;
in the step, the allocation correction coefficient of the wind and light unit is determined by taking the number of guaranteed procurement utilization hours as a reference, and the generated energy of the wind and light unit after correction participating in allocation is calculated; the following formula is specifically adopted:
Figure BDA0002594957680000051
kN＝0.9n；EN_i＝BN_i×kN；
wherein, TeNumber of hours for warranty acquisition, TsTo make practical use of the hours, kNThe wind and light set apportions the correction coefficient; eN_iCorrecting the electric quantity for the wind and light set; b isN_iActual generating capacity of the wind and light set;
it should be noted that the design principle of the wind and light set apportionment correction coefficient is as follows: and taking the guaranteed acquisition hours as a boundary, properly reducing the allocation proportion of the wind and light units below the guaranteed acquisition hours, and properly increasing the allocation proportion of the wind and light units above the guaranteed acquisition hours.
S20, calculating the peak shaving cost of the thermal power generating unit i according to the corrected power generation amount of the wind and light generating unit; calculating the net peak regulation utility of the thermal power generating unit i;
in this step, it should be noted that the peak shaving utility of the thermal power generating unit with the load rate greater than the compensated peak shaving reference is the increased power generation benefit without taking over the peak shaving obligation.
Calculating the peak shaving cost of the thermal power generating unit i according to the corrected generated energy of the wind and light generating unit, and specifically adopting the following formula:
Figure BDA0002594957680000052
wherein D isf_iCorrected power generation capacity for thermal power generating unit i, Bf_jActual power generation amount k of the fire electric machine set of the jth gearjCorrection factor for the j-th gear ∑ Df_i∑ E for the corrected total power generation of all the thermal power generating units participating in the sharingN-iThe corrected total power generation capacity of all the wind and light units participating in the sharing is obtained; a is the peak shaving total amount to be allocated; a. theiThe thermal power generating unit i distributes the peak shaving cost; wherein D isf_iThe calculation method comprises the following steps: the thermal power generating units participating in the allocation increase the load rate according to the difference of actual load rates in the deep peak regulation trading period on the basis of the paid peak regulation reference, increase the allocation proportion by m grades in sequence, and perform 'step-type' allocation.
Further, in this step, the calculating of the peak shaving utility of the thermal power generating unit i is a difference between the power generation income after the peak shaving capacity is purchased and the power generation income when the peak shaving capacity is not purchased, and specifically includes:
generating revenue C when peak shaving capacity is not purchasedj,1Comprises the following steps: ci,1＝ρBG_d(Pi 0-Pi *)-Fi(Pi 0-Pi *)；
Where ρ isBG_dMarking the power price of the power grid; pi 0Generating output for the plan of the unit i; pi *The peak shaving capacity which needs to be borne by the unit i when the peak shaving capacity is not purchased; fi(. h) is the secondary cost function of the generation of unit j;
Fithe expression is as follows: fi(Pi)＝aiPi 2+biPi+ci(ii) a Wherein, PiIs the actual generated output of the unit i, ai、bi、ciAnd (4) generating cost function coefficients of the unit i.
After purchasing peak shaving capacity, the revenue of electricity generation Ci,2Comprises the following steps: ci,2＝ρBG_dPi 0-Fi(Pi 0)
The peak regulation effect of the thermal power generating unit i is as follows: ci＝Ci,2-Ci,1＝ρBG_dPi *-(Fi(Pi 0)-Fi(Pi 0-Pi *))。
And S30, enabling the net peak regulation effectiveness to be larger than 0 and enabling peak regulation capacity allocation cost not borne by each unit to be equal, and determining a peak regulation auxiliary service cost allocation correction coefficient of the thermal power generating unit.
In this step, the design of the thermal power generating unit apportionment correction coefficient needs to satisfy the following two principles:
(1) in order to ensure the benefits of the units, the net peak regulation effect of each thermal power unit after the peak regulation cost is shared is more than 0;
(2) in order to ensure the fairness of the cost allocation, the cost of the peak shaving capacity allocation which is not born by each unit of the unit is equal.
Specifically, the following equation system is adopted for calculation:
Figure BDA0002594957680000061
in the formula (I), the compound is shown in the specification,
Figure BDA0002594957680000062
indicating net peak shaving utility of unit i, AiIndicating peak shaving cost, P, allocated to unit ii *Representing the peak shaving capacity which needs to be borne by the unit i when the peak shaving capacity is not purchased; wherein, the net peak regulation utility of thermal power generating unit is:
Figure BDA0002594957680000063
representing the peak shaving utility of the unit i; the relation of each correction coefficient can be obtained by solving the equation set.
Aiming at the problem of peak shaving market expense allocation, the embodiment of the invention overcomes the defect that the allocation result is lack of rationality due to the fact that the allocation correction coefficient is determined artificially in the prior art according to the principle that the profitability and the allocation ratio are in positive correlation on the basis of the peak shaving expense allocation method, namely the principle of 'who benefits and who undertakes the cost'.
To assist in understanding the method for determining peak shaving assistance service cost apportionment correction method coefficients provided by the present invention, one embodiment of the present invention provides a specific calculation process of substituted values:
(1) the wind and light set apportionment correction coefficient determination method comprises the following steps:
according to Gansu province, the actual utilization hours of wind power and photovoltaic of the Gansu province in 2018 are 1807h and 1397h respectively, and the national approval security acquisition hours are 1800h and 1500h respectively. Substituting the following equation:
Figure BDA0002594957680000071
calculating to obtain correction coefficients of 1.007 and 0.897 for wind power generation and photovoltaic power generation respectively, and substituting the correction coefficients into EN_i＝BN_i×kNAnd calculating a corrected ration.
(2) Thermal power generating unit apportionment correction coefficient determination method
Calculating the peak shaving cost of the thermal power generating unit i according to the corrected generated energy of the wind and light generating unit, and specifically adopting the following formula:
Figure BDA0002594957680000072
in this embodiment, the load ratios of the thermal power generating units participating in the sharing are increased, the sharing specific gravity is sequentially increased by 3 steps, that is, m is equal to 3, and the correction coefficients corresponding to the load ratios of the different thermal power generating units shown in table 1 are obtained:
Figure BDA0002594957680000073
TABLE 1
Then, 3 thermal power generating units with installed units of 1000MW, 600MW and 330MW are selected for analysis, and when the peak shaving auxiliary service is not considered to be provided, the day-ahead planned load rate and the generated power of the thermal power generating units are shown in table 2:
Figure BDA0002594957680000074
TABLE 2
Suppose there is a wind curtailment power of 54MWh and a light curtailment power of 10 MWh. If the peak shaving capacity is purchased and the price of the peak shaving capacity is 191.4 yuan/MWh, the peak shaving expense A to be paid is equal to12250-bit.
Under the condition of not purchasing peak shaving capacity, the planned output values of the thermal power 1, the thermal power 2 and the thermal power 3 with the load rates larger than the paid peak shaving reference need to be uniformly adjusted to the same load rate, and the adjusted power generation plan, namely the planned output value and the obligatory peak shaving capacity of the unit under the condition of not purchasing the peak shaving capacity are shown in a table 3:
Figure BDA0002594957680000081
TABLE 3
The electricity price of the known thermal power grid pole is 297.8 yuan/MWh, and the electricity generation cost coefficient is a1＝0.0033、b1＝171.51、c1＝1172.7，a2＝0.0036、b2＝171.51、c2＝1082.5，a3＝0.0042、b3＝171.51、c3938.17. The planned outputs of wind and photovoltaic are 284MW and 110 MW. According to formula Ci,1＝ρBG_d(Pi 0-Pi *)-Fi(Pi 0-Pi *) The peak shaving utility of each thermal power generating unit obtained by calculation is shown in table 4.
Figure BDA0002594957680000082
Table 4 finally according to the formula:
Figure BDA0002594957680000083
solving the equation system to obtain each correction coefficient needs to satisfy the following relations:
k2＝1.5k1
k3＝2.3k1。
referring to fig. 2, an embodiment of the present invention further provides a system for determining a peak shaving auxiliary service cost allocation correction method coefficient, including:
the wind and light unit apportionment correction coefficient calculation unit 01 is used for determining the wind and light unit apportionment correction coefficient by taking the guaranteed purchase utilization hours as a reference, and calculating the generated energy of the wind and light units participating in apportionment after correction;
the net peak regulation utility calculating unit 02 is used for calculating the peak regulation cost of the thermal power generating unit i according to the corrected power generation amount of the wind and light generating unit; calculating the net peak regulation utility of the thermal power generating unit i;
and the thermal power generating unit apportionment correction coefficient calculating unit 03 is used for enabling the net peak shaving utility to be larger than 0 and enabling peak shaving capacity apportionment costs not borne by each unit to be equal, and determining the peak shaving auxiliary service cost apportionment correction coefficient of the thermal power generating unit.
Further, the net peak shaving utility calculating unit 02 is further configured to calculate the peak shaving utility of the thermal power generating unit i according to a difference between the power generation income after the peak shaving capacity is purchased and the power generation income when the peak shaving capacity is not purchased.
An embodiment of the present invention further provides a computer terminal device, including:
one or more processors;
a memory coupled to the processor for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement a method of determining a peaking assist service cost apportionment correction factor as described above.
The processor is used for controlling the overall operation of the computer terminal equipment so as to complete all or part of the steps of the fully-automatic power consumption prediction method. The memory is used to store various types of data to support the operation at the computer terminal device, which data may include, for example, instructions for any application or method operating on the computer terminal device, as well as application-related data. The Memory may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk or optical disk.
The computer terminal Device may be implemented by one or more Application Specific integrated circuits (AS 1C), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components, and is configured to perform the method for determining the peak shaving assistance service cost apportionment correction coefficients according to any of the embodiments described above, and achieve the technical effects consistent with the above methods.
An embodiment of the present invention further provides a computer readable storage medium comprising program instructions which, when executed by a processor, implement the steps of the method for determining a peak shaver assistance service charge share correction factor according to any one of the embodiments described above. For example, the computer readable storage medium may be the above-mentioned memory including program instructions executable by a processor of a computer terminal device to perform the method for determining a peak shaver auxiliary service cost share correction factor according to any one of the above-mentioned embodiments, and achieve the technical effects consistent with the above-mentioned method.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (10)

1. A method for determining a peak shaving assistance service cost contribution correction factor, comprising:
determining the wind and light unit allocation correction coefficient by taking the number of hours of guaranteed procurement utilization as a reference, and calculating the power generation amount of the wind and light units participating in allocation after correction;
calculating the peak shaving cost of the thermal power generating unit i according to the corrected generated energy of the wind and light generating unit; calculating the net peak regulation utility of the thermal power generating unit i;
and enabling the net peak regulation effectiveness to be larger than 0 and enabling peak regulation capacity apportionment cost not borne by each unit to be equal, and determining the peak regulation auxiliary service cost apportionment correction coefficient of the thermal power generating unit.
2. The method for determining the peak shaving auxiliary service cost allocation correction coefficient according to claim 1, wherein the wind and light unit allocation correction coefficient is determined by taking the number of guaranteed procurement utilization hours as a reference, and the power generation amount of the wind and light unit after the wind and light unit participating in allocation is corrected is calculated; specifically, the following formula is adopted:
Figure FDA0002594957670000011
kN＝0.9n；EN_i＝BN_i×kN；
wherein, TeNumber of hours for warranty acquisition, TsTo make practical use of the hours, kNThe wind and light set apportions the correction coefficient; eN_iCorrecting the electric quantity for the wind and light set; b isN_iActual generating capacity of the wind and light set;
the wind and light generating set with the allocation proportion being properly reduced below the guaranteed acquisition hours and the wind and light generating set with the allocation proportion being properly increased above the guaranteed acquisition hours.
3. The method for determining the peak shaving auxiliary service cost sharing correction coefficient according to claim 1, wherein the peak shaving cost of the thermal power generating unit i is calculated according to the corrected power generation amount of the wind and light generating unit, and the following formula is specifically adopted:
Figure FDA0002594957670000012
wherein D isf_iCorrected power generation capacity for thermal power generating unit i, Bf_jActual power generation amount k of the fire electric machine set of the jth gearjCorrection factor for the j-th gear ∑ Df_i∑ E for the corrected total power generation of all the thermal power generating units participating in the sharingN-iThe corrected total power generation capacity of all the wind and light units participating in the sharing is obtained; a is the peak shaving total amount to be allocated; a. theiThe thermal power generating unit i distributes the peak shaving cost; and m represents that m grades are divided according to the increase of the load rate of the thermal power generating unit on the basis of the compensated peak regulation reference, and the sharing proportion is increased sequentially.
4. The method for determining the peak shaving auxiliary service cost apportionment correction coefficient according to claim 1, wherein the calculating the peak shaving utility of the thermal power generating unit i comprises:
the difference between the generation benefit after purchasing peak shaver capacity and the generation benefit without purchasing peak shaver capacity.
5. The method for determining the peak shaving auxiliary service cost allocation correction coefficient according to claim 4, wherein the peak shaving utility of the thermal power generating unit i is calculated as a difference value between a power generation income after the peak shaving capacity is purchased and a power generation income when the peak shaving capacity is not purchased, and specifically:
generating revenue C when peak shaving capacity is not purchasedj,1Comprises the following steps: ci,1＝ρBG_d(Pi 0-Pi *)-Fi(Pi 0-Pi *)；
Where ρ isBG_dMarking the power price of the power grid; pi 0Generating output for the plan of the unit i; pi *The peak shaving capacity which needs to be borne by the unit i when the peak shaving capacity is not purchased; fi(. h) is the secondary cost function of the generation of unit j;
Fithe expression is as follows: fi(Pi)＝aiPi 2+biPi+ci(ii) a Wherein, PiIs the actual generated output of the unit i, ai、bi、ciThe power generation cost function coefficient of the unit i is obtained;
after purchasing peak shaving capacity, the revenue of electricity generation Ci,2Comprises the following steps: ci,2＝ρBG_dPi 0-Fi(Pi 0)；
The peak shaving effect of the thermal power generating unit i is as follows: ci＝Ci,2-Ci,1＝ρBG_dPi *-(Fi(Pi 0)-Fi(Pi 0-Pi *))。
6. The method for determining the peak shaving auxiliary service cost allocation correction coefficient according to claim 1, wherein the determining the peak shaving auxiliary service cost allocation correction coefficient according to the fact that the net peak shaving utility is greater than 0 and the peak shaving capacity allocation costs not borne by each unit of the thermal power generating unit are equal comprises the following steps of:
Figure FDA0002594957670000021
in the formula (I), the compound is shown in the specification,
Figure FDA0002594957670000022
indicating net peak shaving utility of unit i, AiIndicating peak shaving cost, P, allocated to unit ii *Representing the peak shaving capacity which needs to be borne by the unit i when the peak shaving capacity is not purchased; wherein, the net peak regulation utility of thermal power generating unit is:
Figure FDA0002594957670000023
Figure FDA0002594957670000024
indicating the peak shaving utility of the unit i.
7. A system for determining a peak shaving assistance service cost contribution correction factor, comprising:
the wind and light unit apportionment correction coefficient calculation unit is used for determining the wind and light unit apportionment correction coefficient by taking the guaranteed purchase utilization hours as a reference, and calculating the generated energy of the wind and light units participating in apportionment after correction;
the net peak regulation utility calculation unit is used for calculating the peak regulation cost of the thermal power generating unit i according to the corrected generated energy of the wind and light generating unit; calculating the net peak regulation utility of the thermal power generating unit i;
and the thermal power generating unit allocation correction coefficient calculation unit is used for enabling the net peak regulation effectiveness to be larger than 0 and enabling peak regulation capacity allocation cost not borne by each unit to be equal, and determining the thermal power generating unit peak regulation auxiliary service cost allocation correction coefficient.
8. The system for determining the peak shaving auxiliary service cost sharing correction coefficient as claimed in claim 7, wherein the net peak shaving utility calculating unit is further configured to calculate the peak shaving utility of the thermal power generating unit i according to a difference between the power generation income after the peak shaving capacity is purchased and the power generation income when the peak shaving capacity is not purchased.
9. A computer terminal device, comprising:
one or more processors;
a memory coupled to the processor for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement a method of determining a peaking assist service cost apportionment correction factor as claimed in any one of claims 1 to 6.
10. A computer-readable storage medium, on which a computer program is stored, which computer program is executed by a processor to carry out a method of determining a peaking assist service cost contribution correction factor as claimed in any of claims 1 to 6.
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