Power generation cost calculation method and device, equipment and storage medium

Abstract

The invention provides a power generation cost calculation method and device, equipment and a storage medium. The method comprises the following steps: acquiring the quoted price of a conventional generator set, the quoted price of a random generator set, the predicted generating capacity and the predicted electricity consumption of the market; distributing to-be-generated energy for the conventional generator set and the random generator set; determining to-be-generated power earnings of the conventional generator set and the random generator set; obtaining the available generating capacity of the random generator set and the current electricity consumption of the market; adjusting the generating capacity of the conventional generator set as the actual generating capacity of the conventional generator set; determining a punitive electricity price of the random generator set; determining the punitive cost of the random generator set based on the punitive electricity price; and adjusting the to-be-generated power earnings of the conventional generator set and the random generator set to determine the actual power generation earnings of the conventional generator set and the random generator set.

Description

Technical Field

[0001] The present invention relates to the field of power system operation, and in particular to a method and device for calculating power generation costs, equipment and storage medium. Background Art

[0002] The power system usually includes random generators and conventional generators, which are allocated to conventional generators and random generators to generate electricity to meet the market's electricity demand. Usually, it is difficult to predict the actual power generation of random generators and the market's electricity demand with absolute accuracy. If the power generation of a generator exceeds the market's electricity demand, or the power generation of a generator is lower than the market's electricity demand, it will cause losses to the market.

[0003] It is particularly important to provide a reasonable power distribution method and cost calculation method to reasonably allocate the power generation to conventional generators and random generators, and calculate the power generation costs to be paid to conventional generators and random generators under the condition of minimizing the total power generation cost. Summary of the invention

[0004] The present invention provides a method and device for calculating power generation costs, equipment and storage medium, which can implement the regulation of the power generation to be generated by conventional power generation units and random power generation units to ensure that the total power generation of conventional power generation units and random power generation units can match the power demand of the market in real time. In addition, the fees to be paid to conventional power generation units and random power generation units can be calculated in real time, and when the actual power generation of the random power generation units does not meet the requirements, the penalty electricity price and penalty fee of the random power generation units can be calculated.

[0005] On the one hand, a method for calculating power generation costs is provided, including: Get quotes for conventional generator sets; Obtain quotations of random power generation units and predicted power generation of random power generation units; Get the predicted electricity consumption of the market; Based on the market's predicted electricity consumption, the quotations of conventional generators, the quotations of random generators and the predicted power generation, the power generation to be generated is allocated to conventional generators and random generators; Based on the amount of electricity to be generated by the conventional generator set and the random generator set, determining the income of electricity to be generated by the conventional generator set and the random generator set; Get the available power generation of random generators and the current power consumption of the market; Based on the available power generation of the random power generation group and the current power consumption of the market, the power generation of the conventional power generation group is adjusted as the actual power generation of the conventional power generation group; Determining a penalty electricity price of the stochastic generator set based on the increased or decreased power generation of the stochastic generator set; Determining a penalty fee for the random power generation group based on the penalty electricity price; Based on the actual power generation of the conventional power generation unit and the penalty fee of the random power generation unit, the revenue of the power generation to be generated by the conventional power generation unit and the random power generation unit is adjusted to determine the actual power generation revenue of the conventional power generation unit and the random power generation unit.

[0006] Optionally, based on the bids of the conventional generator sets, the bids of the random generator sets and the predicted power generation of the random generator sets, the power generation to be generated is allocated to the conventional generator sets and the random generator sets, including: Obtaining system constraints of the power system, wherein the system constraints of the power system include reserve capacity constraints, line flow constraints, section flow constraints, upper and lower limit constraints on generator set output, and generator set climbing ability constraints; Under the conditions of satisfying the system constraints, based on the forecast electricity consumption in the day-ahead market and the quotations of conventional generators , Random Generator Quote and the predicted power generation of random generators , under the condition of the lowest electricity purchase cost, the power generation to be generated is allocated to the conventional generator sets and the random generator sets, wherein the Represents the time period in a single power dispatch cycle.

[0007] Optionally, based on the amount of electricity to be generated by the conventional generator set and the random generator set, determining the income of electricity to be generated by the conventional generator set and the random generator set comprises: Confirm to eliminate conventional generator sets Finally, in order to achieve the predicted electricity consumption of the market, the cost of other conventional generators and random generators ,in, , is the number of conventional generating units; Determine the elimination of random generators Finally, in order to achieve the predicted electricity consumption of the market, the cost of other random units and conventional generators ,in, , is the number of random generators; Make sure that conventional generators are not eliminated In order to achieve the predicted electricity consumption of the market, the cost of other conventional generators and random generators ; Determine the random generators that are not eliminated In order to achieve the predicted electricity consumption of the market, the cost of other random units and conventional generators ; The conventional generator set The revenue of electricity to be generated is and The difference between the random generator The revenue of electricity to be generated is and The difference.

[0008] Optionally, based on the available power generation of the random power generation set and the current power consumption of the market, the power generation of the conventional power generation set is adjusted as the actual power generation of the conventional power generation set, including: Get the current electricity consumption in the real-time market; Obtaining system constraints of the power system; Get a conventional generator set Quote for increasing power generation and reduce the amount of electricity generated ; When the available power generation of the random power generation unit is higher or lower than the power generation to be generated by the random power generation unit, based on the current power consumption in the real-time market, the system constraints, the bids for increasing power generation and the bids for reducing power generation of the conventional power generation units, the amount to be paid to the conventional power generation units is determined by the system constraints. Adjust the conventional generator set to the lowest cost The power generation capacity, as a conventional generator set actual power generation.

[0009] Optionally, determining the penalty electricity price of the stochastic generator set based on the increased or decreased power generation of the stochastic generator set includes: Get a conventional generator set Increased or decreased electricity generation; Based on conventional generator sets Increased power generation quotation , reduce the quotation of power generation And conventional generator sets Increase or decrease in power generation, determine the cost to be paid to all conventional generators for the increased power generation or the cost of reducing the power generation of all conventional generators ; Get the increased power generation of all random generators or all random generators reduce their power generation ; In the random generator Actual power generation Beyond random generators Forecasted power generation When the random generator The penalty electricity price is and Ratio In the random generator group The actual power generation is lower than the random power generation unit The amount of electricity to be generated When the random generator The penalty electricity price is and Ratio In the random generator group The actual power generation is within the predicted power generation The amount of electricity to be generated When the random generator The penalty electricity price is 0.

[0010] Optionally, determining the penalty fee of the random power generation group based on the penalty electricity price includes: In the random generator Actual power generation Beyond random generators Forecasted power generation When the random generator Punitive fees In the random generator group The actual power generation is lower than the random power generation unit The amount of electricity to be generated When the random generator Punitive fees In the random generator group The actual power generation is within the predicted power generation The amount of electricity to be generated When the random generator The penalty fee is ; wherein said For random generators The day-ahead market clearing electricity price is the ratio of the unit's revenue in the day-ahead market to the allocated power generation capacity.

[0011] Optionally, based on the actual power generation of the conventional power generation set and the penalty electricity price of the random power generation set, the revenues of the power generation to be generated by the conventional power generation set and the random power generation set are adjusted to determine the actual power generation revenues of the conventional power generation set and the random power generation set, including: Make sure that conventional generator sets are not included The cost of other conventional generators and random generators to increase or decrease power generation to meet the real-time market electricity demand. ; Confirm that conventional generator sets are included The cost of other conventional generators and random generators to increase or decrease power generation to meet the real-time market electricity demand. ; The conventional generator set The actual power generation revenue is - + - , the random generator The actual power generation revenue is - + .

[0012] In another aspect, a device for calculating power generation costs is provided, comprising: The acquisition module is used to obtain the quotation of conventional power generation units; obtain the quotation of random power generation units and the predicted power generation of random power generation units; obtain the predicted power consumption of the market; obtain the available power generation, actual power generation and current power consumption of the market of random power generation units; A processing module is used to allocate the power to be generated for the conventional generator set and the random generator set based on the predicted power consumption in the market, the quotation of the conventional generator set, the quotation of the random generator set and the predicted power generation; determine the power generation income of the conventional generator set and the random generator set based on the power to be generated of the conventional generator set and the random generator set; adjust the power generation of the conventional generator set based on the available power generation of the random generator set and the current power consumption in the market as the actual power generation of the conventional generator set; determine the penalty electricity price of the random generator set based on the increased or decreased power generation of the random generator set; determine the penalty fee of the random generator set based on the penalty electricity price; adjust the power generation income of the conventional generator set and the random generator set based on the actual power generation of the conventional generator set and the penalty fee of the random generator set to determine the actual power generation income of the conventional generator set and the random generator set.

[0013] On the other hand, a calculation device is provided, which includes the calculation apparatus for the power generation cost as described above.

[0014] On the other hand, a computer-readable storage medium is provided, wherein at least one program code is stored in the computer-readable storage medium, and the program code is executed by a processor to implement the method for calculating power generation cost as described in any one of the above items.

[0015] The technical solution provided by the embodiments of the present disclosure has the following beneficial effects: The disclosed embodiment provides a method for calculating the power generation cost. The method first allocates the power generation to be generated to the conventional power generation group and the random power generation group and calculates the power generation income of the conventional power generation group and the random power generation group through the quotation of the conventional power generation group, the quotation of the random power generation group, the predicted power generation of the random power generation group and the predicted power consumption of the market. Secondly, the current power consumption of the market is obtained to determine the change of the market power demand, and the power generation of the conventional power generation group is adjusted in real time according to the real-time power consumption of the market and the available power generation of the random power generation group, so as to avoid the situation where the market power demand does not match the power generation of the random power generation group and the power generation of the conventional power generation group, so as to avoid the loss caused by the power generation being greater than or less than the market power consumption. Finally, the penalty electricity price and penalty fee generated by the random power generation group when the actual power generation does not meet the requirements are calculated, and the fees that need to be paid to the conventional power generation group and the random power generation group are calculated to ensure the rationality of the fee calculation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A method flow chart of a method for calculating power generation costs provided in an embodiment of the present disclosure; Figure 2 A structural block diagram of a device for calculating power generation costs provided in an embodiment of the present disclosure; Figure 3 A structural block diagram of a computing device provided in an embodiment of the present disclosure.

[0018] Reference numerals: 21: acquisition module; 22: processing module; 30: processor; 40: memory. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Figure 1 A method flow chart of a method for calculating power generation costs provided in an embodiment of the present disclosure. Figure 1 The method steps include: S10. Obtain a quotation for a conventional generator set.

[0021] In one example, step S10 includes: Obtain quotations from various conventional generators and form a quotation collection .

[0022] For example, the number of conventional generator sets is The quotation set Included A quote for a conventional generator set.

[0023] in, Including conventional generator sets Energy prices at different power generation ranges , that is = ,in , , Indicates the maximum power generation of a conventional generator set.

[0024] S11. Obtaining quotations of random power generating units and predicted power generation of random power generating units.

[0025] In one example, step S11 includes: Obtain the quotes and predicted power generation of each random generator group to form a quote set .

[0026] For example, the number of random generators is The quotation set Included A quotation of a random generator set.

[0027] in, Contains random generators Energy prices at different power generation ranges , that is = And random generators During a single scheduling cycle Forecasted power generation under ,in, , , Indicates the maximum power generation of a random generator set.

[0028] In the embodiment of the present disclosure, the total quotation set of the generator set is .

[0029] S12. Obtain the predicted electricity consumption in the market.

[0030] The predicted power consumption is .

[0031] S13. Based on the market's predicted electricity consumption, the quotations of conventional power generating units, the quotations of random power generating units and the predicted power generation, the power generation to be generated is allocated to the conventional power generating units and the random power generating units.

[0032] In one example, step S13 includes: The first step is to obtain the system constraints of the power system, which include reserve capacity constraints, line flow constraints, section flow constraints, upper and lower limit constraints on generator set output, and generator set climbing ability constraints.

[0033] In the embodiment of the present disclosure, the spare capacity constraint is: , ,in, , The time periods The positive reserve and negative reserve capacity requirements of the power system; , Respectively represent conventional generator sets In the period Provides positive and negative spare capacity.

[0034] It is worth noting that the power consumption of the power system is uncertain, and with the large-scale uncertain renewable energy grid connection, the power dispatching agency needs to comprehensively consider factors such as load changes, renewable energy output fluctuations, and major fault expectations to formulate the operating reserve requirements on the power generation side. The unit's reserve can be divided into two categories: positive reserve and negative reserve. During peak power consumption, the dispatching agency calls on the unit's positive reserve to increase output (power generation); during low power consumption, the dispatching agency calls on the unit's negative reserve to reduce output.

[0035] In the embodiment of the present disclosure, the line power flow constraint is: ,in, for Time Route The transmission power, For Line In the power system, the power transmitted by the line should not be greater than the allowable power flow transmission limit.

[0036] Considering the impact of generator output and node load on the line The power transfer distribution factor of the line flow constraint can be rewritten as: ,in, For the crew Node to line The generator output power transfer distribution factor; Indicates contact line Node to line The generator output power transfer distribution factor; Indicates the number of nodes in the system; Representation Node To line The generator output power transfer distribution factor; Representation Node In the period The section power flow constraint is similar to the line power flow constraint and will not be described in detail here.

[0037] In the disclosed embodiment, the upper and lower limits of the generator set output are: ,in, Conventional units The minimum and maximum power generation of conventional generator sets should be between the minimum and maximum power generation; ,in, For random generators For the predicted power generation of random generators, their power generation should not be greater than their predicted power generation.

[0038] In the embodiment of the present disclosure, the climbing capability constraint of the generator set is: , ,in, , For the crew The maximum speed of climbing up and down the slope.

[0039] The second step is to meet the system constraints, based on the forecast power consumption of the day-ahead market and the quotation of conventional generators. , Random Generator Quote and the predicted power generation of random generators , under the condition of the lowest electricity purchase cost, the power generation to be generated is allocated to the conventional generator sets and the random generator sets, wherein the Represents the time period in a single power dispatch cycle.

[0040] In the embodiment of the present disclosure, the power consumption of the market should be equal to the power generation to be generated by the generator set, as follows: , among which For conventional generator sets contribute, For random generators contribute, For load The power, For Line - The admittance of For Node The voltage phase. For Node The generator set and load combination, For the node A collection of connected nodes.

[0041] In the embodiment of the present disclosure, the specific allocation formula of the amount of electricity to be generated is as follows: ,

[0042] in, is the number of time periods in the scheduling cycle. For example, if the length of a time period is 15 minutes, then in a single scheduling cycle under the day-ahead market The number of time periods in a period is 96. Indicates the cost of conventional generator sets, represents the cost of the random generator set, Indicates allocation to conventional generator sets The amount of electricity to be generated, Represents a random generator The predicted power generation of the random generator set is equal to the predicted power generation of the random generator set.

[0043] In the embodiment of the present disclosure, by establishing the system constraints of the power system, the power generation to be generated is allocated to the conventional generator sets and the random generator sets under the constraints of the power system to ensure the transmission performance of the power system. When allocating the power generation to be generated, the power consumption at the load end is considered on the one hand, and the loss caused by the power system transmission is considered on the other hand, so as to ensure that the final allocated power generation to be generated matches the total power consumption.

[0044] S14, determining the revenue of the conventional power generation set and the random power generation set to be generated.

[0045] In one example, step S14 includes: The first step is to eliminate conventional generators Finally, in order to achieve the predicted electricity consumption of the market, the cost of other conventional generators and random generators ,in, , is the number of conventional generator sets.

[0046] The second step is to determine the elimination of random generators Finally, in order to achieve the predicted electricity consumption of the market, the cost of other random units and conventional generators ,in, , is the number of random generators.

[0047] The third step is to ensure that conventional generators are not eliminated. In order to achieve the predicted electricity consumption of the market, the cost of other conventional generators and random generators .

[0048] The calculation formula is as follows:

[0049]

[0050] In the above formula, Indicates that conventional generator sets are not excluded In order to achieve the predicted electricity consumption in the market, it is necessary to pay fees to all conventional generators and all random generators; Indicates conventional generator set When the required power generation is met, conventional generator sets The expected power generation cost of conventional generator sets expected cost.

[0051] Step 4: Determine the random generators that have not been eliminated In order to achieve the predicted electricity consumption of the market, the cost of other random units and conventional generators .

[0052] The calculation formula is as follows:

[0053]

[0054] In the above formula, Indicates that random generators are not eliminated In order to achieve the predicted electricity consumption in the market, it is necessary to pay fees to all conventional generators and all random generators; Indicates that in the random generator group When the required power generation is met, the random generator set The expected power generation cost, that is, the random power generation unit expected cost.

[0055] If the bid of the random generator group is 0, then ,at this time, .

[0056] Step 5: the conventional generator set The revenue of electricity to be generated is and The difference between the random generator The revenue of electricity to be generated is and The difference.

[0057] The formula is as follows:

[0058]

[0059] In the above formula, Indicates conventional generator set The revenue from electricity generation to be generated, Represents a random generator of electricity generation revenue.

[0060] For conventional generator sets , Random Generator After adjusting the expected cost, the expected power generation income is formed, which is the income that needs to be paid to the conventional power generation unit. , Random Generator of electricity generation costs.

[0061] If the bid of the random generator group is 0, then the revenue of the random generator group to be generated is:

[0062] In the embodiment of the present disclosure, the method in step S14 is used to calculate the revenue of power generation for conventional power generation groups and random power generation groups, which can ensure that the calculation method of the revenue of power generation is relatively fair, and the value of the revenue of power generation finally calculated is smaller, that is, the power generation cost to be paid is less.

[0063] S15, obtaining the available power generation of the random power generating set and the current power consumption of the market.

[0064] In one case, the available power generation of a random generator set may fluctuate. For example, the available power generation of a random generator set may be less than the power generation to be generated by the random generator set. This will cause the total power generation of the random generator set to decrease, so that the total power generation of the random generator set and the conventional generator set may not match the market electricity consumption.

[0065] In another case, the market electricity consumption fluctuates. For example, the market electricity consumption decreases, but the total power generation of conventional generators and random generators remains unchanged, which will also lead to a mismatch between power generation and market electricity consumption.

[0066] Of course, it is also possible that the available power generation of the random generator set and the power consumption in the market may fluctuate at the same time. Therefore, in step S15, the available power generation of the random generator set in the real-time market and the current power consumption in the market are obtained to facilitate real-time adjustment of the total power generation of the conventional generator set and the random generator set to ensure that the total power generation matches the power consumption.

[0067] S16. Based on the available power generation of the random power generation group and the current power consumption in the market, the power generation of the conventional power generation group is adjusted as the actual power generation of the conventional power generation group.

[0068] In one example, step S16 includes: The first step is to obtain the current electricity consumption in the real-time market.

[0069] The second step is to obtain system constraints of the power system.

[0070] The system constraint condition is consistent with the system constraint condition in step S13.

[0071] Step 3: Get a conventional generator set Increased power generation quotation and reduce the amount of electricity generated .

[0072] In the fourth step, when the available power generation of the random power generation unit is higher or lower than the power generation to be generated by the random power generation unit, based on the current power consumption in the real-time market, the system constraints, the bids for increasing power generation and the bids for reducing power generation of the conventional power generation units, the amount of power required to be paid to the conventional power generation unit is calculated. Adjust the conventional generator set to the lowest cost The power generation capacity, as a conventional generator set actual power generation.

[0073] In the disclosed embodiment, step S16 determines whether the power consumption in the real-time market matches the total power generation by obtaining the current power consumption in the real-time market and the available power generation of the random power generation unit. If not, the power generation of the conventional power generation unit can be adjusted in real time to match the power consumption in the real-time market with the total power generation. In the case where the system constraints are met, the power generation of the conventional power generation unit can be adjusted based on the quotation of increasing or decreasing the power generation of the conventional power generation unit at the lowest cost.

[0074] The system operator is based on the unit output increase and decrease quotations reported by each conventional power generation company. The output increase and decrease quotation set is recorded as , the objective function of the unit output increase or decrease arrangement is:

[0075]

[0076]

[0077] In the formula, , For conventional generator sets In real-time market Quotes for increasing or decreasing power generation during time periods; The conventional generator set under the optimal dispatch of the day-ahead market In the period The output (i.e., the power generation obtained in step S13); For conventional generators in real-time market In the period of power generation; For the period load The forced load reduction For load load shedding losses.

[0078] In the embodiment of the present disclosure, the function is defined , , then in the above formula For conventional generator sets In real-time market Increased power generation during the period; For conventional generator sets In real-time market The amount of power generation reduced during the period.

[0079] In the above formula For conventional generator sets The cost of adjusting generation in real-time markets, Losses caused by forced load reduction.

[0080] S17. Determine a penalty electricity price for the stochastic generator set based on the increased or decreased power generation of the stochastic generator set.

[0081] In one example, step S17 includes: The first step is to obtain a conventional generator set Increase or decrease power generation.

[0082] The second step is based on conventional generator sets Increased power generation quotation , reduce the quotation of power generation And conventional generator sets Increase or decrease in power generation, determine the cost to be paid to all conventional generators for the increased power generation or the cost of reducing the power generation of all conventional generators .

[0083] The calculation method of the cost of increasing and reducing power generation is as follows:

[0084]

[0085] The third step is to obtain the increased power generation of all random generators or all random generators reduce their power generation ; The calculation method of increased power generation and reduced power generation is as follows:

[0086]

[0087] The fourth step is to generate randomness in the Actual power generation Beyond random generators Forecasted power generation When the random generator The penalty electricity price is and Ratio In the random generator group The actual power generation is lower than the random power generation unit The amount of electricity to be generated When the random generator The penalty electricity price is and Ratio In the random generator group The actual power generation is within the predicted power generation The amount of electricity to be generated When the random generator The penalty electricity price is 0.

[0088] In the embodiment of the present disclosure, since the random generator set increases or decreases its power generation, and the increased or decreased power generation of the random generator set exceeds the requirement, the random generator set needs to bear the loss caused by its increased or decreased power generation, that is, the cost caused by adjusting the power generation of the conventional generator set. The punitive electricity price of the random generator set can be determined based on the increased or decreased power generation of the random generator set and the cost caused by adjusting the power generation of the conventional generator set.

[0089] S18. Determine a penalty fee for the random power generation group based on the penalty electricity price.

[0090] In one example, step S18 includes: In the random generator Actual power generation Beyond random generators Forecasted power generation When the random generator Punitive fees In the random generator group The actual power generation is lower than the random power generation unit The amount of electricity to be generated When the random generator Punitive fees In the random generator group The actual power generation is within the predicted power generation The amount of electricity to be generated When the random generator The penalty fee is ; wherein said For random generators The day-ahead market clearing electricity price is the ratio of the unit's revenue in the day-ahead market to the allocated power generation capacity.

[0091] In the disclosed embodiment, when the random generator set increases or decreases its power generation, on the one hand, its penalty fee should be considered, and on the other hand, the increase or decrease of power generation fee should be considered. For example, when the increase or decrease of power generation of the random generator set exceeds the requirement, the cost of adjusting the power generation of the conventional generator set will be generated. At the same time, the power generation increased by the random generator set needs to be paid to the power generation fee of the random generator set, and the power generation reduced by the random generator set needs to be deducted from the power generation fee of the random generator set. At the same time, the penalty fee to be paid to the random generator set is determined by combining the cost of adjusting the power generation of the conventional generator set and the power generation fee of the random generator set.

[0092] It is worth noting that a positive penalty fee means that the fee needs to be paid to the random generator set, and a negative penalty fee means that the fee needs to be deducted from the random generator set.

[0093] S19. Based on the actual power generation of the conventional power generation group and the penalty fee of the random power generation group, the revenue of the power generation to be generated by the conventional power generation group and the random power generation group is adjusted to determine the actual power generation revenue of the conventional power generation group and the random power generation group.

[0094] In one example, step S19 includes: The first step is to ensure that conventional generators are not included. The cost of other conventional generators and random generators to increase or decrease power generation to meet the real-time market electricity demand. .

[0095] The second step is to determine whether conventional generator sets are included. The cost of other conventional generators and random generators to increase or decrease power generation to meet the real-time market electricity demand. .

[0096] The calculation method is as follows:

[0097]

[0098]

[0099] In the above formula, To eliminate conventional generator sets When the total cost of output adjustment of other generating units in real time market; For conventional generator sets When the output of other generating units is adjusted, the total cost is

[0100] The third step is to use the conventional generator set The actual power generation revenue is - + - , the random generator The actual power generation revenue is - + .

[0101] in,

[0102] In the disclosed embodiment, the actual revenues of the conventional power generation units and the random power generation units calculated in the above manner are more accurate and fair, and can also ensure that the power generation costs that need to be paid in the end are lower.

[0103] The disclosed embodiment provides a method for calculating the power generation cost. The method first allocates the power generation to be generated to the conventional power generation group and the random power generation group and calculates the power generation income of the conventional power generation group and the random power generation group through the quotation of the conventional power generation group, the quotation of the random power generation group, the predicted power generation of the random power generation group and the predicted power consumption of the market. Secondly, the current power consumption of the market is obtained to determine the change of the market power demand, and the power generation of the conventional power generation group is adjusted in real time according to the real-time power consumption of the market and the available power generation of the random power generation group, so as to avoid the situation that the available power generation of the random power generation group does not match the power generation to be generated, the market power demand does not match the power generation to be generated of the random power generation group, and the power generation to be generated of the conventional power generation group, so as to avoid the loss caused by the power generation being greater than or less than the market power consumption. Finally, the penalty electricity price and penalty fee generated by the random power generation group when the actual power generation does not meet the requirements are calculated, and the fees that need to be paid to the conventional power generation group and the random power generation group are calculated to ensure the rationality of the fee calculation.

[0104] Figure 2 This is a structural block diagram of a device for calculating power generation costs provided by an embodiment of the present disclosure. Figure 2 , the device comprises: The acquisition module 21 is used to obtain the quotation of the conventional generator set; obtain the quotation of the random generator set and the predicted power generation of the random generator set; obtain the predicted power consumption of the market; obtain the available power generation, actual power generation and current power consumption of the random generator set; The processing module 22 is used to allocate the power to be generated for the conventional generator set and the random generator set based on the predicted power consumption in the market, the quotation of the conventional generator set, the quotation of the random generator set and the predicted power generation; determine the power generation income of the conventional generator set and the random generator set based on the power to be generated of the conventional generator set and the random generator set; adjust the power generation of the conventional generator set as the actual power generation of the conventional generator set based on the available power generation of the random generator set and the current power consumption in the market; determine the penalty electricity price of the random generator set based on the increased or decreased power generation of the random generator set; determine the penalty fee of the random generator set based on the penalty electricity price; adjust the power generation income of the conventional generator set and the random generator set based on the actual power generation of the conventional generator set and the penalty fee of the random generator set to determine the actual power generation income of the conventional generator set and the random generator set.

[0105] Optionally, the processing module 22 is used to: Obtaining system constraints of the power system, wherein the system constraints of the power system include reserve capacity constraints, line flow constraints, section flow constraints, upper and lower limit constraints on generator set output, and generator set climbing ability constraints; Under the conditions of satisfying the system constraints, based on the forecast electricity consumption in the day-ahead market and the quotations of conventional generators , Random Generator Quote and the predicted power generation of random generators , under the condition of the lowest electricity purchase cost, the power generation to be generated is allocated to the conventional generator sets and the random generator sets, wherein the Represents the time period in a single power dispatch cycle.

[0106] Optionally, the processing module 22 is used to: Confirm to eliminate conventional generator sets Finally, in order to achieve the predicted electricity consumption of the market, the cost of other conventional generators and random generators ,in, , is the number of conventional generating units; Determine the elimination of random generators Finally, in order to achieve the predicted electricity consumption of the market, the cost of other random units and conventional generators ,in, , is the number of random generators; Make sure that conventional generators are not eliminated In order to achieve the predicted electricity consumption of the market, the cost of other conventional generators and random generators ; Determine the random generators that are not eliminated In order to achieve the predicted electricity consumption of the market, the cost of other random units and conventional generators ; The conventional generator set The revenue of electricity to be generated is and The difference between the random generator The revenue of electricity to be generated is and The difference.

[0107] Optionally, the processing module 22 is used to: Get the current electricity consumption in the real-time market; Obtaining system constraints of the power system; Get a conventional generator set Increased power generation quotation and reduce the amount of electricity generated ; When the available power generation of the random power generation unit is higher or lower than the power generation to be generated by the random power generation unit, based on the current power consumption in the real-time market, the system constraints, the bids for increasing power generation and the bids for reducing power generation of the conventional power generation units, the amount to be paid to the conventional power generation units is determined by the system constraints. Adjust the conventional generator set to the lowest cost The power generation capacity, as a conventional generator set actual power generation.

[0108] Optionally, the processing module 22 is used to: Get a conventional generator set Increased or decreased electricity generation; Based on conventional generator sets Increased power generation quotation , reduce the quotation of power generation And conventional generator sets Increase or decrease in power generation, determine the cost to be paid to all conventional generators for the increased power generation or the cost of reducing the power generation of all conventional generators ; Get the increased power generation of all random generators or all random generators reduce their power generation ; In the random generator Actual power generation Beyond random generators Forecasted power generation When the random generator The penalty electricity price is and Ratio In the random generator group The actual power generation is lower than the random power generation unit The amount of electricity to be generated When the random generator The penalty electricity price is and Ratio In the random generator group The actual power generation is within the predicted power generation The amount of electricity to be generated When the random generator The penalty electricity price is 0.

[0109] Optionally, the processing module 22 is used to: In the random generator Actual power generation Beyond random generators Forecasted power generation When the random generator Punitive fees In the random generator group The actual power generation is lower than the random power generation unit The amount of electricity to be generated When the random generator Punitive fees In the random generator group The actual power generation is within the predicted power generation The amount of electricity to be generated When the random generator The penalty fee is ; wherein said For random generators The day-ahead market clearing electricity price is the ratio of the unit's revenue in the day-ahead market to the allocated power generation capacity.

[0110] Optionally, the processing module 22 is used to: Make sure that conventional generator sets are not included The cost of other conventional generators and random generators to increase or decrease power generation to meet the real-time market electricity demand. ; Confirm that conventional generator sets are included The cost of other conventional generators and random generators to increase or decrease power generation to meet the real-time market electricity demand. ; The conventional generator set The actual power generation revenue is - + - , the random generator The actual power generation revenue is - + .

[0111] Figure 3 A block diagram of a computing device provided in an embodiment of the present disclosure. Figure 3 The calculation device may include the above-mentioned calculation device for power generation cost. Generally, the calculation device includes: a processor 30 and a memory 40.

[0112] The processor 30 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 30 may be implemented in at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), and PLA (Programmable Logic Array). The processor 30 may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as a CPU (Central Processing Unit); the coprocessor is a low-power processor for processing data in the standby state.

[0113] The memory 40 may include one or more computer-readable storage media, which may be non-transitory. The memory 40 may also include a high-speed random access memory, and a non-volatile memory, such as one or more disk storage devices, flash memory storage devices. In some embodiments, the non-transitory computer-readable storage medium in the memory 40 is used to store at least one instruction, which is used to be executed by the processor 30 to implement the method for calculating the power generation cost performed by the computing device provided in the method embodiment of the present application.

[0114] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for calculating power generation costs, characterized in that: include: Get quotes for conventional generator sets; Obtain quotations of random power generation units and predicted power generation of random power generation units; Get the predicted electricity consumption of the market; Based on the market's predicted electricity consumption, the quotations of conventional generators, the quotations of random generators and the predicted power generation, the power generation to be generated is allocated to conventional generators and random generators; Based on the amount of electricity to be generated by the conventional generator set and the random generator set, determining the income of electricity to be generated by the conventional generator set and the random generator set; Get the available power generation of random generators and the current power consumption of the market; Based on the available power generation of the random power generation group and the current power consumption of the market, the power generation of the conventional power generation group is adjusted as the actual power generation of the conventional power generation group; Determining a penalty electricity price of the stochastic generator set based on the increased or decreased power generation of the stochastic generator set; Determining a penalty fee for the random power generation group based on the penalty electricity price; Based on the actual power generation of the conventional power generation unit and the penalty fee of the random power generation unit, the revenue of the power generation to be generated by the conventional power generation unit and the random power generation unit is adjusted to determine the actual power generation revenue of the conventional power generation unit and the random power generation unit.

2. The method for calculating power generation cost according to claim 1, characterized in that: Based on the quotations of conventional generators, the quotations of random generators and the predicted power generation of random generators, the power generation to be generated is allocated to conventional generators and random generators, including: Obtaining system constraints of the power system, wherein the system constraints of the power system include reserve capacity constraints, line flow constraints, section flow constraints, upper and lower limit constraints on generator set output, and generator set climbing ability constraints; Under the conditions of satisfying the system constraints, based on the forecast electricity consumption in the day-ahead market and the quotations of conventional generators , Random Generator Quote and the predicted power generation of random generators , under the condition of the lowest electricity purchase cost, the power generation to be generated is allocated to the conventional generator sets and the random generator sets, wherein the Represents the time period in a single power dispatch cycle.

3. The method for calculating power generation cost according to claim 2, characterized in that: Based on the amount of electricity to be generated by the conventional generator set and the random generator set, determining the income of electricity to be generated by the conventional generator set and the random generator set includes: Confirm to eliminate conventional generator sets Finally, in order to achieve the predicted electricity consumption of the market, the cost of other conventional generators and random generators ,in, , is the number of conventional generating units; Determine the elimination of random generators Finally, in order to achieve the predicted electricity consumption of the market, the cost of other random units and conventional generators ,in, , is the number of random generators; Make sure that conventional generators are not eliminated In order to achieve the predicted electricity consumption of the market, the cost of other conventional generators and random generators ; Determine the random generators that are not eliminated In order to achieve the predicted electricity consumption of the market, the cost of other random units and conventional generators ; The conventional generator set The revenue of electricity to be generated is and The difference between the random generator The revenue of electricity to be generated is and The difference.

4. The method for calculating power generation cost according to claim 3, characterized in that: Based on the available power generation of the random power generation unit and the current power consumption of the market, the power generation of the conventional power generation unit is adjusted as the actual power generation of the conventional power generation unit, including: Get the current electricity consumption in the real-time market; Obtaining system constraints of the power system; Get a conventional generator set Quote for increasing power generation and reduce the amount of electricity generated ; When the available power generation of the random power generation unit is higher or lower than the power generation to be generated by the random power generation unit, based on the current power consumption in the real-time market, the system constraints, the bids for increasing power generation and the bids for reducing power generation of the conventional power generation units, the amount to be paid to the conventional power generation units is determined by the system constraints. Adjust the conventional generator set to the lowest cost The power generation capacity, as a conventional generator set actual power generation.

5. The method for calculating power generation cost according to claim 4, characterized in that: Determining a penalty electricity price of the stochastic generator set based on the increased or decreased power generation of the stochastic generator set includes: Get a conventional generator set Increased or decreased electricity generation; Based on conventional generator sets Quote for increasing power generation , reduce the quotation of power generation And conventional generator sets Increase or decrease in power generation, determine the cost to be paid to all conventional generators for the increased power generation or the cost of reducing the power generation of all conventional generators ; Get the increased power generation of all random generators or all random generators reduce their power generation ; In the random generator Actual power generation Beyond random generators Forecasted power generation When the random generator The penalty electricity price is and Ratio In the random generator group The actual power generation is lower than the random power generation unit The amount of electricity to be generated When the random generator The penalty electricity price is and Ratio In the random generator group The actual power generation is within the predicted power generation The amount of electricity to be generated When the random generator The penalty electricity price is 0.

6. The method for calculating power generation cost according to claim 5, characterized in that: Determining the penalty fee of the random power generation group based on the penalty electricity price includes: In the random generator Actual power generation Beyond random generators Forecasted power generation When the random generator Punitive fees In the random generator group The actual power generation is lower than the random power generation unit The amount of electricity to be generated When the random generator Punitive fees In the random generator group The actual power generation is within the predicted power generation The amount of electricity to be generated When the random generator The penalty fee is ; wherein said For random generators The day-ahead market clearing electricity price is the ratio of the unit's revenue in the day-ahead market to the allocated power generation capacity.

7. The method for calculating power generation cost according to claim 6, characterized in that: Based on the actual power generation of the conventional power generation unit and the penalty power price of the random power generation unit, the revenue of the power generation to be generated by the conventional power generation unit and the random power generation unit is adjusted to determine the actual power generation revenue of the conventional power generation unit and the random power generation unit, including: Make sure that conventional generator sets are not included The cost of other conventional generators and random generators to increase or decrease power generation to meet the real-time market electricity demand. ; Confirm that conventional generator sets are included The cost of other conventional generators and random generators to increase or decrease power generation to meet the real-time market electricity demand. ; The conventional generator set The actual power generation revenue is - + - , the random generator The actual power generation revenue is - + .

8. A device for calculating power generation costs, characterized in that: include: An acquisition module is used to obtain the quotation of conventional power generation sets; obtain the quotation of random power generation sets and the predicted power generation of random power generation sets; Get the predicted electricity consumption of the market; Obtain the available power generation, actual power generation and current power consumption of random power generation units; A processing module is used to allocate the power to be generated for the conventional power generation units and the random power generation units based on the predicted power consumption in the market, the quotations of the conventional power generation units, the quotations of the random power generation units and the predicted power generation; Based on the waiting power generation of the conventional generator set and the random generator set, determine the waiting power generation income of the conventional generator set and the random generator set; based on the available power generation of the random generator set and the current power consumption of the market, adjust the power generation of the conventional generator set as the actual power generation of the conventional generator set; Determining a penalty electricity price of the stochastic generator set based on the increased or decreased power generation of the stochastic generator set; Determining a penalty fee for the random power generation group based on the penalty electricity price; Based on the actual power generation of the conventional power generation unit and the penalty fee of the random power generation unit, the revenue of the power generation to be generated by the conventional power generation unit and the random power generation unit is adjusted to determine the actual power generation revenue of the conventional power generation unit and the random power generation unit.

9. A computing device, characterized in that The calculation device comprises the device for calculating the power generation cost as claimed in claim 8.

10. A computer-readable storage medium, characterized in that: At least one program code is stored in the computer-readable storage medium, and the program code is executed by a processor to implement the method for calculating power generation costs according to any one of claims 1 to 7.

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