CN112366687B - Peak-shaving auxiliary service compensation method and device considering green certificate - Google Patents
Peak-shaving auxiliary service compensation method and device considering green certificate Download PDFInfo
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Abstract
The invention discloses a peak shaving auxiliary service compensation method considering green certificates, which comprises the following steps: dividing the time of the day according to a preset time threshold value to obtain a time period set corresponding to the time period set, and obtaining deviation generating capacity and a deviation generating capacity coefficient through a renewable energy source unit prediction generating curve and an actual generating curve in each time period in the time period set; screening a reverse peak regulation time period in a time period set according to the deviation generating capacity coefficient; and calculating deviation green certificate quantity in the total reverse peak regulation time period, and distributing the deviation green certificate quantity to the corresponding peak regulation auxiliary service generator set in proportion. The method can solve the problem of unbalanced compensation mechanism of the peak-shaving auxiliary service market, realizes secondary allocation of auxiliary service cost increment caused by the peak-shaving period of renewable energy on the power generation side in a green certificate mode, and makes up the defect of the allocation mechanism of the current peak-shaving auxiliary service market to a certain extent.
Description
Technical Field
The invention relates to the technical field of power markets, in particular to a peak shaving auxiliary service compensation method and device considering a green certificate.
Background
With the agreement of paris in 2015, each participating country including china takes a series of measures for reducing carbon emission, and renewable energy grid-connected consumption is more and more emphasized. In order to guarantee and encourage the renewable energy power generation enterprises to produce actively, china manages and subsidizes the renewable energy enterprises in a quota system mode and a green license mode. The quota system refers to the proportion index of renewable energy sources required by each provincial power consumption, and comprises the total power quota of the renewable energy sources and the power quota of the non-hydroelectric renewable energy sources. The implementation of the quota system is a measure for forcibly consuming the renewable energy from the administrative level, the green certificate is an electronic certificate with a unique identification code issued by the country to the non-water renewable energy online electricity quantity per megawatt hour by the power generation enterprise, and the enterprise can obtain green certificate sales funds of corresponding electricity quantity by selling green certificate brands, so that the economic value of the renewable energy is realized.
Under the promotion of the reform of the power market, peak regulation auxiliary service market construction is developed in various places, and the 'paid' service of peak regulation is realized. Along with the grid connection of large-scale renewable energy sources, the output curve of the power grid is opposite to the peak regulation characteristic of the power grid operation, certain influence is brought to the safe and stable operation of the power grid, and the scarcity of peak regulation resources is further highlighted. Therefore, it is necessary to further analyze the relationship between renewable energy sources and peak shaving auxiliary services based on the green license development background, and construct a fair and ordered peak shaving auxiliary service market.
In the existing peak regulation auxiliary service markets of most areas, the units providing the peak regulation auxiliary service are generally thermal power units, only the thermal power units with the load rate of less than 50% can obtain the benefit of the auxiliary service from the peak regulation market, and the thermal power units with the load rate of more than 50% still need to bear the peak regulation cost of a power grid even if the renewable energy sources are promoted to be actively absorbed, the output is reduced, and certain unfairness exists. Meanwhile, the output of the renewable energy source has volatility and uncertainty, so that the power generation is difficult to control, the output prediction error in the day ahead is large, and extra peak shaving auxiliary service requirements are brought to the real-time market. The peak shaving auxiliary service cost increment caused by the renewable energy access device is difficult to quantitatively distinguish due to the current technical level, and the existing peak shaving auxiliary service allocation mode enables a unit which does not participate in peak shaving (hereinafter referred to as an uncompensated peak shaving unit) to bear more peak shaving auxiliary service cost, so that the newly increased auxiliary service cost allocated to the unit is reasonably compensated due to fairness.
Disclosure of Invention
The purpose of the invention is: the peak shaving auxiliary service compensation method and device considering the green certificate can solve the problem of unbalance of a peak shaving auxiliary service market compensation mechanism, secondary sharing of auxiliary service cost increment caused by a renewable energy source reverse peak shaving time period on a power generation side in a green certificate mode is achieved, and the defect of the current peak shaving auxiliary service market sharing mechanism is overcome to a certain extent.
In order to achieve the above object, the present invention provides a peak shaving assistance service compensation method considering a green certificate, the method comprising: dividing the time of the day according to a preset time threshold value to obtain a time period set corresponding to the time period set, and obtaining a deviation power generation coefficient between a predicted power generation curve and an actual power generation curve of the renewable energy unit in each time period through the deviation power generation amount between the predicted power generation curve and the actual power generation curve of the renewable energy unit in each time period in the time period set; wherein the preset time threshold is set according to actual conditions;
screening out a time slot in which the deviation generating capacity coefficient is greater than a penalty factor and the peak shaving auxiliary service fee is generated and the actual generating capacity of the peak shaving unit with the load rate greater than 50% is less than the planned generating capacity according to the deviation generating capacity coefficient; the screened time period is a reverse peak regulation time period needing compensation; calculating to obtain the total deviation green quantity of the renewable energy source unit in all the reverse peak-shaving time periods needing compensation in the current day according to the reverse peak-shaving time periods needing compensation; wherein the penalty factor is set according to actual demand;
according to the total deviation green certificate quantity and the deviation green certificate quantity remainder of the renewable energy unit in the previous day, the deviation green certificate quantity to be deducted by the renewable energy unit in the current day and the deviation green certificate quantity remainder of the renewable energy unit in the next day are obtained;
and calculating the output reduction amount of the peak shaving auxiliary service unit which needs to be compensated, and distributing the amount of the green offset which needs to be deducted by the renewable energy source unit in the day to the corresponding peak shaving auxiliary service generator unit in proportion by combining the residue of the green offset of the peak shaving unit in the previous day.
Further, the deviation power generation amount coefficient between the predicted power generation curve and the actual power generation curve of the renewable energy unit in each time period is obtained by the deviation power generation amount between the predicted power generation curve and the actual power generation curve of the renewable energy unit in each time period in the time period set, and the following formula is specifically adopted:
D i,t ＝Q i,t -A i,t
wherein D is i,t The deviation amount between the predicted power generation curve and the actual power generation curve of the renewable energy source unit i in the t-th time period is obtained; q i,t An actual power generation curve of the renewable energy source unit i in the t-th time period is obtained; a. The i,t A predicted power generation curve of the renewable energy source unit i in the t-th time period is obtained; k is a radical of i,t And (4) obtaining a deviation power generation quantity coefficient of the renewable energy source unit i in the t-th time period.
Further, screening out a time slot in which the deviation generating capacity coefficient is larger than a penalty factor, the peak shaving auxiliary service fee is generated and the actual generating capacity of the peak shaving unit with the load rate larger than 50% is smaller than the planned generating capacity according to the deviation generating capacity coefficient; the screened time period is a reverse peak regulation time period needing compensation; the method specifically comprises the following steps:
k i,t >r，S t >0, and
wherein r is a penalty factor for determining a back-peak period, and is equal to the allowable deviation power generation of the renewable energy divided by the predicted power generation; s t Assisting the service cost for the whole network peak shaving in the t-th time period; g i,T Actual power generation of the auxiliary service generator set with the load rate larger than 50% in T judged reverse peak regulation periods; b is i,T And planning the power generation amount of the auxiliary service generator set with the load rate larger than 50% in T judged reverse peak regulation periods.
Further, calculating to obtain the total deviation green quantity of the renewable energy unit in all the reverse peak regulation time periods in the same day according to the reverse peak regulation time periods; the method specifically comprises the following steps:
wherein N is g,i Deviation green evidence quantity of a single renewable energy source unit in T judged reverse peak regulation time periods; q g The unit green certificate corresponds to the generated energy; n is a radical of g And the deviation green certificate quantity of the n renewable energy source units in the T judged reverse peak regulation time periods is obtained.
Further, the deviation green certificate quantity to be deducted on the day and the deviation green certificate quantity remainder on the next day of the renewable energy unit are obtained according to the total deviation green certificate quantity and the deviation green certificate quantity remainder on the previous day of the renewable energy unit; the following formula is specifically adopted:
Vr g,i ＝N g,i +Mr g,i
wherein Vr G,i The current day deviation green certificate quantity of a single renewable energy source unit is obtained; mr (molar mass transfer) g,i The residue of the deviation green syndrome quantity of the single auxiliary peak-shaving generating set in the previous day.
Further, the output reduction amount of the peak shaving auxiliary service generator set which needs to be compensated is calculated, and the green certificate amount of the deviation which needs to be deducted by the renewable energy source generator set on the day is distributed to the corresponding peak shaving auxiliary service generator set in proportion, and the following formula is specifically adopted:
V g,i ＝N g ×R i +M g,i
wherein R is i The output meter decrement amount of the auxiliary service generator set on the day is a single output meter decrement amount of the auxiliary service generator set participating in peak shaving, the load rate is greater than 50%, and the actual power generation amount is smaller than the planned power generation amount; v g,i Obtaining deviation green evidence quantity for the non-compensated peak regulation auxiliary service generator set i; m g,i The residue of the deviation green syndrome quantity of the single auxiliary peak-shaving generating set in the previous day.
The embodiment of the invention also provides a peak shaving auxiliary service compensation device considering the green certificate, which comprises: the device comprises a deviation generating capacity coefficient acquisition unit, a deviation green evidence quantity calculation unit, a deduction deviation green evidence quantity calculation unit and a compensation unit; wherein,
the deviation generating capacity coefficient obtaining unit is used for dividing the time of the day according to a preset time threshold value to obtain a time period set corresponding to the time period set, and obtaining a deviation generating capacity coefficient between a predicted generating curve and an actual generating curve of the renewable energy unit in each time period through the deviation generating capacity between the predicted generating curve and the actual generating curve of the renewable energy unit in each time period in the time period set; the preset time threshold is set according to the actual situation;
the deviation green evidence amount calculation unit is used for screening out a time slot in a time slot set, wherein the deviation power generation amount coefficient is larger than a penalty factor, the peak shaving auxiliary service fee is generated, and the actual power generation amount of the peak shaving unit with the load rate larger than 50% is smaller than the planned power generation amount; the screened time period is a reverse peak regulation time period needing compensation; calculating to obtain the total deviation green quantity of all the reverse peak regulation time periods needing to be compensated of the renewable energy source unit in the current day according to the reverse peak regulation time periods needing to be compensated; wherein the penalty factor is set according to actual demand;
the deducted deviation green evidence quantity calculating unit is used for obtaining the deviation green evidence quantity deducted by the renewable energy unit on the day and the deviation green evidence quantity remainder of the renewable energy unit on the next day according to the total deviation green evidence quantity and the deviation green evidence quantity remainder of the renewable energy unit on the previous day;
and the compensation unit is used for calculating the output reduction amount of the peak shaving auxiliary service unit which needs to be compensated, and distributing the amount of the green certificate of deviation which needs to be deducted by the renewable energy source unit to the corresponding peak shaving auxiliary service generator unit according to the proportion by combining the residue of the green certificate of deviation of the peak shaving unit in the previous day.
Further, the deviation power generation amount coefficient between the predicted power generation curve and the actual power generation curve of the renewable energy unit in each time period is obtained by the deviation power generation amount between the predicted power generation curve and the actual power generation curve of the renewable energy unit in each time period in the time period set, and the following formula is specifically adopted:
D i,t ＝Q i,t -A i,t
wherein D is i,t The deviation amount between the predicted power generation curve and the actual power generation curve of the renewable energy source unit i in the t-th time period is calculated; q i,t An actual power generation curve of the renewable energy source unit i in the t-th time period is obtained; a. The i,t A predicted power generation curve of the renewable energy source unit i in the t-th time period is obtained; k is a radical of i,t And (4) obtaining a deviation power generation quantity coefficient of the renewable energy source unit i in the t-th time period.
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 peak shaving assistance service compensation method in view of green credentials as in any above.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the peak shaving assistance service compensation method according to any one of the above descriptions, in which the green certificate is considered.
Compared with the prior art, the peak shaving auxiliary service compensation device considering the green certificate has the beneficial effects that:
compared with the existing peak regulation mechanism, the peak regulation auxiliary service compensation mechanism has the advantages that the phenomenon of peak regulation reversal in the peak regulation process of the renewable energy generator set is considered, the concept of deviation green quantity is introduced, the renewable energy generator set can bear part of power grid fluctuation caused by inaccurate power generation prediction of the renewable energy generator set, the peak regulation unit which gives up the output space and has the load rate of more than 50% is compensated, and the peak regulation auxiliary service compensation mechanism is fairer.
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Fig. 1 is a schematic flowchart of a peak shaving auxiliary service compensation method considering green certificates according to a first embodiment of the present invention;
fig. 2 is a detailed flowchart of a peak shaving auxiliary service compensation method considering green certificates according to a first embodiment of the present invention
Fig. 3 is a schematic structural diagram of a peak shaving assistance service compensation apparatus considering green certificates according to a second 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 any and all possible combinations of one or more of the associated listed items and includes such combinations.
The first embodiment of the present invention:
as shown in fig. 1, a peak shaving auxiliary service compensation method considering green certificates according to an embodiment of the present invention includes at least the following steps:
s101, dividing the time of the day according to a preset time threshold value to obtain a time period set corresponding to the time period set, and obtaining a deviation generating capacity coefficient between a predicted generating curve and an actual generating curve of the renewable energy unit in each time period through the deviation generating capacity between the predicted generating curve and the actual generating curve of the renewable energy unit in each time period in the time period set; the preset time threshold is set according to the actual situation;
for step S101, it should be noted that the time division may be made according to actual situations, in the present scheme, 24 hours a day is divided into 96 time periods, that is, starting from 0 point, and every 15 minutes is a time period;
s102, screening out a time slot in which the deviation generating capacity coefficient is larger than a penalty factor, the peak shaving auxiliary service fee is generated and the actual generating capacity of the peak shaving unit with the load rate larger than 50% is smaller than the planned generating capacity according to the deviation generating capacity coefficient; the screened time period is a reverse peak regulation time period needing compensation; calculating to obtain the total deviation green quantity of all the reverse peak regulation time periods needing to be compensated of the renewable energy source unit in the current day according to the reverse peak regulation time periods needing to be compensated; wherein the penalty factor is set according to actual demand;
it should be added to step S102 that a penalty factor can be set according to requirements to adjust the quantitative relationship between the peak shaving auxiliary service and the renewable energy sources in different regions. And when the deviation power generation coefficient of the renewable energy unit is greater than the penalty factor, namely the actual deviation power generation of the renewable energy is greater than the deviation power generation specified by the penalty factor, the cost of the auxiliary service market at the moment is not 0, and the actual power generation of the peak shaving auxiliary service unit with the load greater than 50% is less than the planned power generation, determining that the uncompensated peak shaving unit needs to be compensated. And after the reverse peak regulation condition of all the renewable energy source units in the t-th time period is judged, judging whether the renewable energy source units generate service charge in the next time period (t +1 time period) until the judgment and calculation in 96 time periods are completed.
S103, according to the total deviation green certificate quantity and the deviation green certificate quantity remainder of the renewable energy unit in the previous day, the deviation green certificate quantity to be deducted in the current day and the deviation green certificate quantity remainder of the renewable energy unit in the next day are obtained;
in step S103, it should be added that, in general, the actual green license amount is an integer, the remainder thereof, that is, the surplus power generation amount, is calculated in the next green license amount calculation, each renewable energy generator set subtracts the calculated remainder of the deviation green license amount according to the integer of the deviation green license amount, that is, the part less than 1 after the decimal point, is accumulated in the next settlement, and is cleared by 0 in the month. And (3) deducting an integral number of corresponding deviation green certificate quantities by a single renewable energy power generating set, and counting the deviation green certificate quantity deduction to be carried out next time when the remainder is less than 1.
And S104, calculating the output reduction amount of the peak shaving auxiliary service unit which needs to be compensated, and distributing the amount of the green offset which needs to be deducted by the renewable energy source unit to the corresponding peak shaving auxiliary service generator unit in proportion by combining the residue of the green offset of the peak shaving unit in the previous day.
In step S104, it should be added that, in all the time periods determined as the renewable energy anti-peak shaving and having the load factor greater than 50% on the same day, the output reduction amount of a single peak shaving auxiliary service unit to be compensated is obtained by dividing the difference between the actual power generation amount and the planned power generation amount by the difference between the actual power generation amount and the planned power generation amount. A single auxiliary service generator set participating in peak shaving can obtain an integer number of corresponding deviation green certificate quantities, and when the remainder is less than 1, the deviation green certificate quantities are counted in the next settlement of the obtainable deviation green certificate quantities.
Finally, the green quantity of the deviation actually to be deducted by the renewable energy source unit is Vr g,i Is an integer of (1). The actually obtained deviation green certificate quantity of the auxiliary service unit participating in peak shaving is V g,i Is an integer of (1).
In a certain embodiment of the present invention, the deviation generated energy coefficient between the predicted generated power curve and the actual generated power curve of the renewable energy unit in each time period is obtained by the deviation generated energy between the predicted generated power curve and the actual generated power curve of the renewable energy unit in each time period in the time period set, specifically using the following formula:
D i,t ＝Q i,t -A i,t
wherein D is i,t The deviation amount between the predicted power generation curve and the actual power generation curve of the renewable energy source unit i in the t-th time period is obtained; q i,t An actual power generation curve of the renewable energy source unit i in the t-th time period is obtained; a. The i,t A predicted power generation curve of the renewable energy source unit i in the t-th time period is obtained; k is a radical of i,t And (4) obtaining a deviation power generation quantity coefficient of the renewable energy source unit i in the t-th time period.
In one embodiment of the present invention, according to the deviation generating capacity coefficient, a time slot in which the deviation generating capacity coefficient is greater than a penalty factor, the peak shaving auxiliary service fee is generated, and the actual generating capacity of the peak shaving unit with the load rate greater than 50% is less than the planned generating capacity is screened out; the screened time period is a reverse peak regulation time period needing compensation; the method specifically comprises the following steps:
k i,t >r，S t >0, and
wherein r is a penalty factor for determining a back-peak period, and is equal to the allowable deviation power generation of the renewable energy divided by the predicted power generation; s t Assisting the service cost for the whole network peak shaving in the t-th time period; g i,T The actual power generation amount of the auxiliary service generator set with the load rate larger than 50% in the T judged reverse peak regulation periods is determined; b is i,T And (4) planning the power generation amount of the auxiliary service generator set with the load rate of more than 50% in T judged reverse peak regulation periods.
In one embodiment of the invention, the total deviation green amount of the renewable energy unit in all the reverse peak-shaving time periods on the same day is calculated according to the reverse peak-shaving time periods; the method specifically comprises the following steps:
wherein, N g,i Deviation green evidence quantity of a single renewable energy source unit in T judged reverse peak regulation time periods; q g Generating capacity corresponding to a unit green certificate; n is a radical of hydrogen g And the deviation green certificate quantity of the n renewable energy source units in the T judged reverse peak regulation time periods is obtained.
In a certain embodiment of the invention, the difference green quantity to be deducted on the current day and the difference green quantity remainder on the next day of the renewable energy unit are obtained according to the total difference green quantity and the difference green quantity remainder on the previous day of the renewable energy unit; the following formula is specifically adopted:
Vr g,i ＝N g,i +Mr g,i
wherein Vr G,i The current day deviation green certificate quantity of a single renewable energy source unit is obtained; mr g,i The residue of the deviation green syndrome quantity of the single auxiliary peak-shaving generating set in the previous day.
In one embodiment of the present invention, the output reduction amount of the peak shaving auxiliary service generator set that should be compensated is calculated, and the amount of the green certificate of the daily subtraction deviation of the renewable energy source generator set is proportionally allocated to the corresponding peak shaving auxiliary service generator set, specifically using the following formula:
V g,i ＝N g ×R i +M g,i
wherein R is i The load factor is more than 50% and the actual power generation amount isThe output meter decrement amount proportion of the auxiliary service generator set on the day is smaller than the planned generating capacity; v g,i Obtaining deviation green evidence quantity for the non-compensated peak regulation auxiliary service generator set i; m is a group of g,i The residue of the deviation green syndrome quantity of the single auxiliary peak-shaving generating set in the previous day.
For the present embodiment, it can be specifically understood by the following examples:
the power generation conditions of the renewable energy source unit and the auxiliary service peak shaving unit in 8 time periods from 12 o ' clock XX day to 13 o ' clock 45 o ' clock XX month in area a are shown in table 1, the day-ahead predicted power generation amount of the renewable energy source unit in the time period and the planned power generation amount of the auxiliary peak shaving unit are shown in table 2, and table 3 shows the load rate of the peak shaving unit in the time period. The 8 time periods are the electricity generation condition of the whole day, and the rest time is not electricity, on the premise, the green quantity of the deviation of the renewable energy source unit and the total electricity generation quantity of the auxiliary peak-shaving generator set in the day are the total deviation of the renewable energy source unit and the total electricity generation quantity of the auxiliary peak-shaving generator set in the time period. The renewable energy source units in the area are a wind generating set and a solar generating set, and the generating sets participating in the auxiliary peak shaving on the same day are a peak shaving unit 1 and a peak shaving unit 2. The penalty factor of the renewable energy generator set of the power grid is 0.03, and the generating capacity corresponding to the unit green license is 1MWh. The deviation green syndrome quantity remainders of the wind generating set and the solar generating set on the previous day are respectively 0.68 and 0.45, and the deviation green syndrome quantity remainders of the peak regulating set 1 and the peak regulating set 2 on the previous day are respectively 0.98 and 0.03.
Table 1 XX month XX day 12:00-13:45 Renewable energy source unit and peak shaving unit actual power generation (MWh) in area A
TABLE 2 prediction of day-ahead power generation of renewable energy units and projected power generation (MWh) of auxiliary peak shaving units
Table 3 XXXX year XX month XX day 12:00-13:45 Load rate of peak shaving unit in area A
The deviation power generation amount is obtained by calculating the difference between the predicted power generation amount in the day ahead of the renewable energy unit and the actual power generation amount in the day, and the deviation power generation amount is divided by the predicted power generation amount in the day ahead to obtain a deviation power generation amount coefficient, as shown in table 4. When the deviation generating capacity coefficient of the renewable energy source unit is larger than the penalty factor, the peak shaving unit participates in the work (namely, the peak shaving auxiliary service fee is generated), and the load rate of the peak shaving unit 1 or the peak shaving unit 2 is larger than 50% and the actual generating capacity is smaller than the planned generating capacity, the corresponding time period is judged as a reverse peak shaving time period. As shown in Table 1, table 2 and Table 3, the period in which the load factor of the peak shaver set 1 is greater than 50% and the actual power generation amount is smaller than the planned power generation amount is a period 4,5,6,7,8, and for the peak shaver set 2, a period 1,2,3. The underlined data in table 4 are the deviation generated energy and the deviation generated energy coefficient of the corresponding renewable energy unit in the back peak regulation period, that is, the period 1,3,7,8 is judged as the back peak regulation period that the renewable energy unit needs to be compensated.
TABLE 4 deviation generating capacity and deviation generating capacity coefficient of renewable energy source unit
The total deviation green amount of the wind generating set and the solar generating set in the peak reverse regulation period is calculated to be (0.28 +0.15+ 0.12)/1 =0.55 and (0.28 +0.43+ 0.28)/1 =0.99 respectively, and the total deviation green amount of all the renewable energy source sets in the peak reverse regulation period on the same day is 1.54. The residue of the deviation green certificate quantity on the previous day of the renewable energy generator set is counted into the total deviation green certificate quantity on the current day, so that the deviation green certificate quantities to be deducted are all 1, and the residues counted on the next day are respectively 0.23 and 0.44, as shown in table 5.
TABLE 5 Total deviation green amount, deviation green amount to be deducted and remainder of renewable energy generator set on the same day
And calculating the total difference value between the planned power generation amount and the actual power generation amount of the inverse peak regulation time interval which is judged to be compensated by the peak regulation unit 1 when the daily load rate is more than 50 percent to be (1.40-1.30) + (1.40-1.30) =0.2MWh (instant segment 7,8, the peak regulation unit 2 can obtain compensation for the time interval 1, 3), the total difference value of the peak regulation unit 2 is (1.81-1.25) + (1.75-1.60) =0.71MWh, and the total difference value of the two peak regulation units is 0.91MWh. The output reduction ratio of the peak shaving unit 1 is listed as 0.2 ÷ 0.91=0.220, and the output reduction ratio of the peak shaving unit 2 is listed as 0.71 ÷ 0.91=0.780. The available deviation green amount of the two peak shaving units is 0.220 × 1.54+0.98=1.32 and 0.780 × 1.54+0.98=1.23, respectively. As shown in table 6, the actually obtainable deviation green amounts of both peak shaving units on the same day are 1, and the remainder counted on the next day is 0.32 and 0.23.
TABLE 6 auxiliary peak shaving unit output ratio and available deviation green evidence quantity
In this embodiment, the deviation green evidence amount that should be deducted by the final renewable energy generator set on the same day is all 1, and the deviation green evidence amount that can be obtained by the generator set participating in the peak shaving auxiliary service on the same day is also all 1. If the current day is the last day of the month, the remainders of all the renewable energy source units and the peak shaving units are cleared, and if the current day is not the last day of the month, the remainders corresponding to all the units are calculated into the settlement of the next day.
Compared with the prior art, the peak shaving auxiliary service compensation method considering the green certificate provided by the embodiment of the invention considers the phenomenon of reverse peak shaving in the peak shaving process of the renewable energy power generator set, introduces the concept of deviation green certificate quantity, enables the renewable energy power generator set to bear part of power grid fluctuation caused by inaccurate power generation prediction, compensates the peak shaving power generator set with the load rate of the yielded space greater than 50%, and enables the peak shaving auxiliary service compensation mechanism to be fairer.
Second embodiment of the invention:
as shown in fig. 3, an embodiment of the present invention provides a peak shaving assistance service compensation apparatus 200 considering a green certificate, including: a deviation power generation amount coefficient obtaining unit 201, a deviation green syndrome calculating unit 202, a deduction deviation green syndrome calculating unit 203 and a compensating unit 204; wherein,
the deviation power generation coefficient obtaining unit 201 is configured to divide the time of the day according to a preset time threshold, obtain a time period set corresponding to the time period set, and obtain a deviation power generation coefficient between the predicted power generation curve and the actual power generation curve of the renewable energy unit in each time period by using the deviation power generation amount between the predicted power generation curve and the actual power generation curve of the renewable energy unit in each time period in the time period set; the preset time threshold is set according to the actual situation;
the deviation green evidence amount calculation unit 202 is configured to screen out, according to the deviation power generation amount coefficient, a time period in which the deviation power generation amount coefficient is greater than a penalty factor and a peak shaving auxiliary service fee is generated in a time period set, and the actual power generation amount of the peak shaving unit with the load rate greater than 50% is less than the planned power generation amount; the screened time period is called a reverse peak regulation time period; calculating to obtain the total deviation green quantity of the renewable energy source unit in all the reverse peak regulation time periods in the same day according to the reverse peak regulation time periods; wherein the penalty factor is set according to actual demand;
the deduction deviation green syndrome amount calculating unit 203 is configured to obtain a deviation green syndrome amount to be deducted by the renewable energy unit on the same day and a deviation green syndrome amount remainder of a next day according to the total deviation green syndrome amount and the deviation green syndrome amount remainder of the renewable energy unit on the previous day;
the compensation unit 204 is configured to calculate an output reduction amount of the peak shaving auxiliary service generator set that should be compensated, and allocate, in combination with a deviation green evidence amount remainder of the peak shaving generator set in the previous day, the deviation green evidence amount that should be deducted by the renewable energy source generator set in the current day to the corresponding peak shaving auxiliary service generator set in proportion.
In one implementation of the present invention, the deviation power generation amount coefficient between the predicted power generation curve and the actual power generation curve of the renewable energy unit in each time period is obtained by using the deviation power generation amount between the predicted power generation curve and the actual power generation curve of the renewable energy unit in each time period in the time period set, specifically using the following formula:
D i,t ＝Q i,t -A i,t
wherein D is i,t The deviation amount between the predicted power generation curve and the actual power generation curve of the renewable energy source unit i in the t-th time period is obtained; q i,t An actual power generation curve of the renewable energy source unit i in the t-th time period is obtained; a. The i,t A predicted power generation curve of the renewable energy source unit i in the t-th time period is obtained; k is a radical of i,t And (4) obtaining a deviation power generation quantity coefficient of the renewable energy source unit i in the t-th time period.
Third embodiment of the invention:
the embodiment of the invention provides computer terminal equipment, which comprises 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 for peak shaving assistance service compensation considering green credentials as described in any of the above.
The fourth embodiment of the present invention:
an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the peak shaving assistance service compensation method considering green certificates according to any one of the above descriptions.
In conclusion, the invention considers the phenomenon of peak regulation reversal in the peak regulation process of the renewable energy generator set, introduces the concept of deviation green quantity, enables the renewable energy generator set to bear part of power grid fluctuation caused by inaccurate power generation prediction, compensates the peak regulation unit with the load rate of yielding space more than 50%, and enables the peak regulation auxiliary service compensation mechanism to be fairer.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (8)
1. A method for peak shaving assistance service compensation considering green certificates, comprising:
dividing the time of the day according to a preset time threshold value to obtain a time period set corresponding to the time period set, and obtaining a deviation power generation coefficient between a predicted power generation curve and an actual power generation curve of the renewable energy unit in each time period through the deviation power generation amount between the predicted power generation curve and the actual power generation curve of the renewable energy unit in each time period in the time period set; the preset time threshold is set according to the actual situation;
screening out a time slot in which the deviation generating capacity coefficient is greater than a penalty factor and the peak shaving auxiliary service fee is generated and the actual generating capacity of the peak shaving unit with the load rate greater than 50% is less than the planned generating capacity according to the deviation generating capacity coefficient; the screened time period is a reverse peak regulation time period needing compensation; calculating to obtain the total deviation green quantity of the renewable energy source unit in all the reverse peak-shaving time periods needing compensation in the current day according to the reverse peak-shaving time periods needing compensation; wherein the penalty factor is set according to actual demand;
according to the total deviation green certificate quantity and the deviation green certificate quantity remainder of the renewable energy unit in the previous day, the deviation green certificate quantity to be deducted by the renewable energy unit in the current day and the deviation green certificate quantity remainder of the renewable energy unit in the next day are obtained;
calculating the output reduction amount of the peak shaving auxiliary service unit which needs to be compensated, and distributing the amount of the green offset which needs to be deducted by the renewable energy source unit to the corresponding peak shaving auxiliary service generator unit in proportion by combining the residue of the green offset of the peak shaving unit in the previous day;
the method comprises the following steps of obtaining a deviation generating capacity coefficient between a predicted generating curve and an actual generating curve of the renewable energy unit in each time period by the deviation generating capacity between the predicted generating curve and the actual generating curve of the renewable energy unit in each time period in the time period set, and specifically adopting the following formula:
D i,t ＝Q i,t -A i,t
wherein D is i，t The deviation amount between the predicted power generation curve and the actual power generation curve of the renewable energy source unit i in the t-th time period is obtained; q i，t An actual power generation curve of the renewable energy source unit i in the t-th time period is obtained; a. The i，t A predicted power generation curve of the renewable energy source unit i in the t-th time period is obtained; k is a radical of i，t And (4) obtaining a deviation power generation quantity coefficient of the renewable energy source unit i in the t-th time period.
2. The peak shaving auxiliary service compensation method considering the green certificate as claimed in claim 1, wherein the time slot in which the deviation power generation coefficient is larger than the penalty factor and the actual power generation amount of the peak shaving unit generating the peak shaving auxiliary service fee and the load rate is larger than 50% is smaller than the planned power generation amount is screened out according to the deviation power generation coefficient; the screened time period is a reverse peak regulation time period needing compensation; the method specifically comprises the following steps:
k i，t ＞r，S t is greater than 0, and
wherein r is a penalty factor for determining a back-peak period, and is equal to the allowable deviation power generation of the renewable energy divided by the predicted power generation; s t Assisting the service cost for the whole network peak shaving in the t-th time period; g i，T The actual power generation amount of the auxiliary service generator set with the load rate larger than 50% in the T judged reverse peak regulation periods is determined; b is i，T And (4) planning the power generation amount of the auxiliary service generator set with the load rate of more than 50% in T judged reverse peak regulation periods.
3. The peak shaving auxiliary service compensation method considering the green certificate as claimed in claim 1, wherein the total deviation green certificate amount of all the peak shaving time periods of the renewable energy unit on the same day is calculated according to the peak shaving time periods; the method specifically comprises the following steps:
wherein N is g，i Deviation green evidence quantity of a single renewable energy source unit in T judged reverse peak regulation time periods; q g The unit green certificate corresponds to the generated energy; n is a radical of g And the deviation green certificate quantity of the n renewable energy source units in the T judged reverse peak regulation time periods is obtained.
4. The peak-shaving auxiliary service compensation method considering the green certificate as claimed in claim 1, wherein the difference green certificate quantity to be deducted by the renewable energy unit on the day and the difference green certificate quantity remainder of the renewable energy unit on the next day are obtained according to the total difference green certificate quantity and the difference green certificate quantity remainder of the renewable energy unit on the previous day; the following formula is specifically adopted:
Vr g，i ＝N g，i +Mr g，i
wherein Vr g，i The current day deviation green certificate quantity of a single renewable energy source unit is obtained; mr g，i The residue of the deviation green syndrome quantity of the single auxiliary peak-shaving generating set in the previous day.
5. The method according to claim 1, wherein the calculation of the output reduction amount of the peak shaver auxiliary service set that should be compensated is performed, and the daily green certificate deduction amount of the renewable energy set is proportionally allocated to the corresponding peak shaver auxiliary service set, specifically using the following formula:
V g，i ＝N g ×R i +M g，i
wherein R is i The output meter decrement amount of the auxiliary service generator set on the day is a single output meter decrement amount of the auxiliary service generator set participating in peak shaving, the load rate is greater than 50%, and the actual power generation amount is smaller than the planned power generation amount; v g，i Obtaining deviation green evidence quantity for the non-compensated peak regulation auxiliary service generator set i; m is a group of g，i The residue of the deviation green syndrome quantity of the single auxiliary peak-shaving generating set in the previous day.
6. A peak shaving assistance service compensation apparatus considering green certificates, comprising: the device comprises a deviation generating capacity coefficient obtaining unit, a deviation green evidence amount calculating unit, a deduction deviation green evidence amount calculating unit and a compensating unit; wherein,
the deviation generating capacity coefficient obtaining unit is used for dividing the time of the day according to a preset time threshold value to obtain a time period set corresponding to the time period set, and obtaining a deviation generating capacity coefficient between a predicted generating curve and an actual generating curve of the renewable energy unit in each time period through the deviation generating capacity between the predicted generating curve and the actual generating curve of the renewable energy unit in each time period in the time period set; the preset time threshold is set according to the actual situation;
the deviation green evidence amount calculation unit is used for screening out a time slot in a time slot set, wherein the deviation power generation amount coefficient is larger than a penalty factor, the peak shaving auxiliary service fee is generated, and the actual power generation amount of the peak shaving unit with the load rate larger than 50% is smaller than the planned power generation amount; the screened time period is a reverse peak regulation time period needing compensation; calculating to obtain the total deviation green quantity of the renewable energy source unit in all the reverse peak-shaving time periods needing compensation in the current day according to the reverse peak-shaving time periods needing compensation; wherein the penalty factor is set according to actual demand;
the deduction deviation green syndrome amount calculating unit is used for obtaining the deviation green syndrome amount to be deducted by the renewable energy unit on the day and the deviation green syndrome amount remainder of the renewable energy unit on the next day according to the total deviation green syndrome amount and the deviation green syndrome amount remainder of the renewable energy unit on the previous day;
the compensation unit is used for calculating the output reduction amount of the peak shaving auxiliary service generator set which needs to be compensated, and distributing the amount of the green certificate of deviation which needs to be deducted by the renewable energy source generator set to the corresponding peak shaving auxiliary service generator set according to the proportion by combining the residue of the green certificate amount of deviation in the previous day of the peak shaving generator set;
the method comprises the following steps of obtaining a deviation generating capacity coefficient between a predicted generating curve and an actual generating curve of the renewable energy unit in each time period by the deviation generating capacity between the predicted generating curve and the actual generating curve of the renewable energy unit in each time period in the time period set, and specifically adopting the following formula:
D i，t ＝Q i，t -A i，t
wherein D is i，t The deviation amount between the predicted power generation curve and the actual power generation curve of the renewable energy source unit i in the t-th time period is obtained; q i，t For renewable energy unit i at tActual power generation curves for the time periods; a. The i，t A predicted power generation curve of the renewable energy source unit i in the t-th time period is obtained; k is a radical of i，t And (4) obtaining a deviation power generation quantity coefficient of the renewable energy source unit i in the t-th time period.
7. 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 the peak shaving assistance service compensation method according to any one of claims 1 to 5 in consideration of green certificates.
8. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a peak shaver assistance service compensation method according to any one of claims 1 to 5, taking into account green certificates.
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