CN110288274B - Multi-unit power generation planning method, device, equipment and storage medium - Google Patents
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Abstract
The invention relates to a method, a device, equipment and a storage medium for compiling a power generation plan of multiple units, wherein the method comprises the following steps: acquiring target requirement data of multiple units, and determining bidding declaration data according to the target requirement data; determining a first predicted generating power and a first actual generating power of the intermittent unit at a target moment according to the maximum generating power, and determining a second actual generating power of the second type of unit at the target moment; calculating the first predicted power generation power and the first actual power generation power, and determining the power generation loss of the intermittent unit; calculating the declared price and the second actual power generation power, and determining the power generation cost of the second type of unit; determining consumption values of the intermittent unit and the second unit according to the power generation loss and the power generation cost; determining a constraint condition of the generated power according to the target requirement data and the bidding declaration data; and regulating the generated power of the multiple units in the power grid by combining the consumption value and the constraint condition of the generated power. The purpose of being compatible with the generated power of multiple sets is achieved.
Description
Technical Field
The invention relates to the technical field of scheduling operation of an electric power system, in particular to a method, a device, equipment and a storage medium for compiling a power generation plan of multiple units.
Background
The power generation planning is an important business in the dispatching operation of a power system, and the power generation planning process of a generator set in each time period in the day can be optimized and planned on the basis of meeting the safe and stable operation of a power grid through the power generation planning.
In the power generation planning in the prior art, the power generation planning process of a generator set is optimized mainly according to the related requirements of energy-saving power generation scheduling and three-public scheduling and with the balance of the completion rate of the planned electric quantity as a target, so that a power grid can run safely and stably. For the trading rules of the current electric power spot market, part of the power generation plans meeting the trading requirements of the spot market are allowed to participate in the trading of the electric power spot market, the part of the power generation planning units meeting the trading requirements of the spot market are formed in a market bidding mode of full-power clearing, and if the type of the units are controlled by the power generation planning in the prior art, the operation requirements of the type of the units cannot be met, so that the traditional power generation planning cannot be compatible with the operation requirements of the units in different market types.
Disclosure of Invention
In view of this, a method, an apparatus, a device and a storage medium for generating a multi-unit generating plan are provided to solve the problem that the generating plan in the prior art cannot be compatible with generating powers of units of different market types.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, a method for generating a power plan using a plurality of power generation units is provided, the method comprising: acquiring target requirement data of multiple units, wherein the multiple units comprise a first type unit and a second type unit, and the first type unit comprises an intermittent unit and an adjustable unit; determining bid claim data based on the objective requirement data, wherein the bid claim data comprises: maximum generated power, climbing rate and declared price; determining a first predicted generating power and a first actual generating power of the intermittent unit at a target moment according to the maximum generating power, and determining a second actual generating power of the second unit at the target moment; calculating the first predicted power generation power and the first actual power generation power, and determining the power generation loss of the intermittent unit; and calculating the declared price and the second actual power generation power to determine the power generation cost of the second type of unit.
Determining consumption values of the intermittent unit and the second type unit in the power generation process according to the power generation loss and the power generation cost; determining a power generation power constraint condition in a power generation planning method according to the target requirement data and the bidding declaration data, wherein the constraint condition comprises the following steps: the method comprises the following steps of (1) generating power constraint conditions of power grid operation, generating power constraint conditions of intermittent units, generating power constraint conditions of adjustable units and generating power constraint conditions of second-class units; and regulating the generated power of the multiple units in the power grid by combining the consumption value and the generated power constraint condition.
Further, the target requirement data includes: and load prediction generated power data, the generated power data of the first type of unit and maintenance data of the power transmission and transformation equipment.
Further, the load prediction power generation data includes: predicting the generating power of the system load and the generating power of the bus load; the maintenance data of the power transmission and transformation equipment comprises: the section of the power transmission and transformation equipment transmits power.
Further, the determining the power generation loss of the intermittent machine set by performing the operation on the first predicted power generation power and the first actual power generation power includes:
calculating a difference between the first predicted generated power and the first actual generated power;
and performing summation operation on the difference value according to the power generation time of the intermittent units in the whole day and the number of the intermittent units, and determining the power generation loss of the intermittent units.
Further, the calculating the declared price and the second actual generated power to determine the power generation cost of the second type of unit includes:
calculating a product of the declared price and the second actual generated power;
and according to the power generation time of the second type of unit in the whole day and the number of the second type of units, carrying out summation operation on the product, and determining the power generation cost of the second type of unit.
Further, the determining consumption values of the batch type unit and the second type unit in the power generation process according to the power generation loss and the power generation cost comprises: and performing summation operation on the power generation loss and the power generation cost, and selecting the minimum value in the operation result as the consumption values of the intermittent unit and the second unit in the power generation process.
Further, the generated power constraint conditions of the grid operation include: the sum of the first actual generated power, the second actual generated power and the generated power of the adjustable unit at the target moment is equal to the predicted generated power of the system load; the product of the node admittance matrix vector and the node voltage phase angle vector is equal to the node power vector; the section transmission power of the electric transmission and transformation equipment is greater than or equal to the minimum value of the section transmission power and less than or equal to the maximum value of the section transmission power.
The generated power constraint conditions of the intermittent unit comprise: the first predicted generated power is greater than or equal to the first actual generated power.
The generated power constraint conditions of the adjustable unit comprise: the generating power of the adjustable unit at the target moment is less than or equal to the maximum generating power of the adjustable unit at the target moment; the daily generated energy of the adjustable unit is greater than or equal to the minimum value of the daily generated energy and is less than or equal to the maximum value of the daily generated energy.
The generated power constraint conditions of the second type of unit comprise: the second actual generated power is greater than or equal to the minimum value of the maximum generated power and greater than or equal to the maximum value of the maximum generated power; and the difference value between the value of the second actual generated power at the target moment t and the value of the second actual generated power at the moment t-1 before the target moment t is greater than or equal to the negative climbing rate and less than or equal to the positive climbing rate.
In a second aspect, a multi-unit power generation planning apparatus is used, the apparatus including: the acquisition module is used for acquiring target requirement data of multiple units, wherein the multiple units comprise a first type unit and a second type unit, and the first type unit comprises an intermittent unit and an adjustable unit; the system comprises a first determining module and a second determining module, wherein the first determining module is used for determining bidding declaration data according to target requirement data, and the bidding declaration data comprises the following steps: maximum generated power, climbing rate and declared price; the second determining module is used for determining first predicted generating power and first actual generating power of the intermittent set at the target moment according to the maximum generating power and determining second actual generating power of the second set at the target moment; the operation module is used for operating the first predicted generating power and the first actual generating power and determining the generating loss of the intermittent unit; calculating the declared price and the second actual power generation power to determine the power generation cost of the second type of unit; the third determining module is used for determining consumption values of the intermittent unit and the second type unit in the power generation process according to the power generation loss and the power generation cost; determining a generating power constraint condition in a generating plan compiling method according to the target requirement data and the bidding declaration data, wherein the constraint condition comprises the following steps: the method comprises the following steps of (1) generating power constraint conditions of power grid operation, generating power constraint conditions of intermittent units, generating power constraint conditions of adjustable units and generating power constraint conditions of second-class units; and the adjusting module is used for adjusting the generating power of the multiple units in the power grid by combining the consumption value and the generating power constraint condition.
Further, the operation module comprises: and the difference value operation submodule is used for calculating the difference value between the first predicted generating power and the first actual generating power. And the first summation operation submodule is used for carrying out summation operation on the difference value according to the power generation time of the intermittent units in the whole day and the number of the intermittent units so as to determine the power generation loss of the intermittent units.
Further, the operation module further includes: and the product operation submodule is used for calculating the product of the declared price and the second actual power generation power. And the second summation operation submodule is used for carrying out summation operation on the product according to the power generation time of the second type of unit in the whole day and the number of the second type of unit, and determining the power generation cost of the second type of unit.
Further, the third determining module includes: and the third summation operation submodule is used for carrying out summation operation on the power generation loss and the power generation cost, and selecting the minimum value in the operation result as the consumption values of the intermittent unit and the second type unit in the power generation process.
Further, the third determining module further includes: the constraint condition determining submodule is specifically used for determining a power generation constraint condition of grid operation, and comprises the following steps: the sum of the first actual generated power, the second actual generated power and the generated power of the adjustable unit at the target moment is equal to the predicted generated power of the system load; the product of the node admittance matrix vector and the node voltage phase angle vector is equal to the node power vector; the section transmission power of the power transmission and transformation equipment is greater than or equal to the minimum value of the section transmission power and less than or equal to the maximum value of the section transmission power. The method is used for determining the power generation constraint conditions of the intermittent unit and comprises the following steps: the first predicted generated power is greater than or equal to the first actual generated power. The method is used for determining the generating power constraint conditions of the adjustable unit and comprises the following steps: the generated power of the adjustable unit at the target moment is less than or equal to the maximum generated power of the adjustable unit at the target moment; the daily generated energy of the adjustable unit is greater than or equal to the minimum value of the daily generated energy and less than or equal to the maximum value of the daily generated energy. The method is used for determining the generated power constraint condition of the second type unit and comprises the following steps: the second actual generated power is greater than or equal to the minimum value of the maximum generated power and greater than or equal to the maximum value of the maximum generated power; the difference value between the value of the second actual generated power at the target time t and the value of the second actual generated power at the moment t-1 before the target time t is greater than or equal to the negative climbing rate and less than or equal to the positive climbing rate.
Further, the target requirement data includes: the load forecasting method comprises the steps of load forecasting power generation data, power generation data of a first type of unit and maintenance data of power transmission and transformation equipment.
Further, the load prediction generated power data includes: predicting the generating power of the system load and predicting the generating power of the bus load; the maintenance data of the power transmission and transformation equipment comprises: the section of the power transmission and transformation equipment transmits power.
In a third aspect, an apparatus is employed, comprising: a processor, and a memory coupled to the processor; the memory is used for storing a computer program used for executing the multi-unit power generation planning method of the first aspect; the processor is used to call and execute the computer program in the memory.
In a fourth aspect, a storage medium is used, in which a computer program is stored, and when the computer program is executed by a processor, the steps of the method for generating a power generation plan for a multi-unit according to the first aspect are realized.
By adopting the technical scheme, the invention firstly obtains target requirement data of multiple units and determines bidding declaration data according to the target requirement data, wherein the bidding declaration data mainly comprises the following steps: maximum generated power, climbing rate and declared price; determining a first predicted generating power and a first actual generating power of the intermittent unit at a target moment according to the maximum generating power, and determining a second actual generating power of the second type of unit at the target moment; calculating the first predicted power generation power and the first actual power generation power, and determining the power generation loss of the intermittent unit so as to reduce the power generation loss and improve the power generation efficiency; and calculating the declared price and the second actual power generation power, and determining the power generation cost of the second type of unit so as to reduce the power generation cost. Determining consumption values of the intermittent unit and the second type unit in the power generation process according to the power generation loss and the power generation cost; determining a constraint condition of the generated power according to the target requirement data and the bidding declaration data; and finally, regulating the generated power of the multiple units in the power grid by combining the consumption value and the generated power constraint condition. Through the technical scheme, the power generation plan compiling method compatible with different market type units is constructed, the generation business of the power generation plan in the power spot market is powerfully supported, and the promotion effect on the recommended power spot market construction is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a method for planning power generation of multiple units according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for planning power generation of multiple units according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a multi-unit power generation planning apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Examples
Fig. 1 is a flowchart of a method for generating a power plan by multiple units according to an embodiment of the present invention, where the method may be executed by a device for generating a power plan by multiple units according to an embodiment of the present invention, and the device may be implemented in a software and/or hardware manner. Referring to fig. 1, the method may specifically include the following steps:
s101, target requirement data of multiple sets are obtained, wherein the multiple sets comprise a first set and a second set, and the first set comprises an intermittent set and an adjustable set.
Specifically, in the embodiment of the present invention, power generation plans of generator sets of different market types in the electric power spot market are compiled, and requirements of the power generation powers of the different types of the generator sets can be compatible, and the requirements of the power generation powers of the different types of the generator sets are different in an actual power generation process, so that target requirement data of the multiple generator sets need to be acquired by a scheduling mechanism of a power grid first, wherein the target requirement data may be data of the power generation power requirements of the different types of the generator sets in the electric power spot market, and the generated power requirement data of the different types of the generator sets can be acquired mainly through investigation on the internet or to a power generation enterprise, so as to clearly know specific data information. In this embodiment, the multiple units are divided into a first-type unit and a second-type unit, where the first-type unit includes an intermittent unit and an adjustable unit, the first-type unit may represent a generator unit that does not participate in a marketable bidding transaction in the current power spot market, and the second-type unit represents a generator unit that participates in a marketable bidding transaction, for example, a unit that generates power through traditional energy sources such as coal or gas is the second-type unit. The intermittent set represents a set which generates electricity by using intermittent new energy such as wind energy, light energy and the like, and the adjustable set represents a set which generates electricity by using adjustable clean energy such as water and electricity and the like. In this example, for a batch unit, w is indicated, an adjustable unit is indicated by wt and a second unit type is indicated by g.
Optionally, the target requirement data includes: the load forecasting power generation data, the power generation data of the first type of unit and the maintenance data of the power transmission and transformation equipment.
The obtained target requirement data can be load prediction power generation data, the load prediction power generation data comprise system load prediction power generation power and bus load prediction power generation power, and the load prediction power generation data can be obtained from a load prediction management system and are mainly used for ensuring that a system generator set does not exceed a load to operate; the target requirement data can also be the generated power data of the first type of unit, wherein, as the intermittent unit mainly generates power by intermittent new energy such as wind energy or light energy, the dispatching mechanism can predict the future generation plan of the intermittent unit according to the meteorological information; in addition, the first type of unit also comprises hydropower and other generator sets with adjustable clean energy, and the scheduling mechanism can predict the range of daily generated energy according to the daily consumption of hydropower or the consumption/payment principle of the clean energy; the target requirement data can also be maintenance data of the electric transmission and transformation equipment, the maintenance data of the electric transmission and transformation equipment comprises section transmission power of the electric transmission and transformation equipment and maintenance schedule of the electric transmission and transformation equipment, the upper limit and the lower limit of the section transmission power can be predicted according to the section transmission power of the electric transmission and transformation equipment, and the working efficiency of the electric transmission and transformation equipment is guaranteed.
S102, determining bidding declaration data according to target requirement data, wherein the bidding declaration data comprises the following steps: maximum generated power, ramp rate and declared price.
Specifically, the target requirement data acquired by the scheduling mechanism is then released to market members by the scheduling mechanism through the network platform, where the market members may be power generation enterprises, and the power generation enterprises may determine bid declaration data of various types of power generation units according to the target requirement data released by the scheduling mechanism, specifically, the bid declaration data may be maximum power generation power of the power generation units, a ramp rate of the power generation units, and an electric energy declaration price of the power generation units, and in this embodiment, the maximum power generation power may be P Gmax The ramp rate can be expressed in PP Gmax To express, the electric energy declared price can be p E P represents the generated power of the unit, gmax represents the maximum value that can be reached by the generated power, and E represents the price. And calculating the generating power of different generator sets according to the determined bidding declaration data.
S103, determining a first predicted generating power and a first actual generating power of the intermittent unit at the target moment according to the maximum generating power, and determining a second actual generating power of the second type unit at the target moment.
Specifically, in the actual power generation process, the purpose of optimization is different when the power generation powers of different market type units are different, in the embodiment of the present invention, for the intermittent unit w, the predicted power generation power should be matched with the actual power generation power as much as possible to reduce the loss of wind energy and light energy, and therefore, the first predicted power generation power of the intermittent unit w at the target time t needs to be determined according to the maximum power generation power
And first actual generated power
Where GF denotes predicted power generation data and GR denotes actual power generation data. Similarly, in this embodiment, according to the maximum generated power, the second actual generated power of the second type unit g at the target time t is
S104, calculating the first predicted power generation power and the first actual power generation power, and determining the power generation loss of the intermittent unit; and calculating the declared price and the second actual power generation power to determine the power generation cost of the second type of unit.
Specifically, after a first predicted power generation power and a first actual power generation power of the intermittent unit are determined, the first predicted power generation power and the first actual power generation power need to be calculated, the calculation result is used as the power generation loss of the intermittent unit, and the purpose of optimizing the intermittent unit is achieved by reducing the power generation loss. Because the optimization purpose of the second type of unit is to reduce the power generation cost, the power generation cost of the second type of unit needs to be calculated according to the determined declared price and the second actual power generation data, and the optimization targets of the units can be more clearly determined by calculating the power generation data of the different types of units.
S105, determining consumption values of the intermittent unit and the second unit in the power generation process according to the power generation loss and the power generation cost; determining a generating power constraint condition in a generating plan compiling method according to the target requirement data and the bidding declaration data, wherein the constraint condition comprises the following steps: the method comprises the following steps of generating power constraint conditions of power grid operation, generating power constraint conditions of intermittent units, generating power constraint conditions of adjustable units and generating power constraint conditions of second-class units.
Specifically, according to the power generation loss of the intermittent unit and the power generation cost of the second unit, the power loss value and the cost loss value of the two units in the power generation process can be determined, and in order to improve the power generation efficiency of the units, the power generation efficiency can be improved by reducing the consumption value. In addition, in the multi-unit power generation planning method of this embodiment, in addition to the need to improve the power generation efficiency of each unit by reducing the loss value, the power generation efficiency of each unit may be optimized by using the constraint condition of the power generation power of each unit, and the constraint condition of the power generation power of each unit may be determined according to the target requirement data and the bid declaration data, where the constraint condition includes: the method comprises the following steps of generating power constraint conditions of power grid operation, generating power constraint conditions of intermittent units, generating power constraint conditions of adjustable units and generating power constraint conditions of second-class units.
And S106, regulating the generated power of the multiple units in the power grid by combining the consumption value and the generated power constraint condition.
Specifically, in the practical application process, the consumption value is reduced by reducing the power generation loss of the intermittent unit and reducing the power generation cost of the second unit, and the purpose of simultaneously adjusting the power generation power of the multiple units in the power grid is realized by combining the constraint conditions of the power generation power of the multiple units, so that the power generation planning method disclosed by the invention can be compatible with the power generation requirements of the power generation power of the units of different types on the basis of ensuring the safe and stable operation of the power grid.
By adopting the technical scheme, the invention firstly obtains target requirement data of multiple units and determines bidding declaration data according to the target requirement data, wherein the bidding declaration data mainly comprises the following steps: maximum generated power, climbing rate and declared price; determining a first predicted generating power and a first actual generating power of the intermittent unit at the target moment according to the maximum generating power, and determining a second actual generating power of the second unit at the target moment; calculating the first predicted power generation power and the first actual power generation power, and determining the power generation loss of the intermittent unit so as to reduce the power generation loss and improve the power generation efficiency; and calculating the declared price and the second actual power generation power, and determining the power generation cost of the second type of unit so as to reduce the power generation cost. Determining consumption values of the intermittent unit and the second type unit in the power generation process according to the power generation loss and the power generation cost; determining a constraint condition of the generated power according to the target requirement data and the bidding declaration data; and finally, regulating the generated power of the multiple units in the power grid by combining the consumption value and the generated power constraint condition. Through the technical scheme, the power generation planning method compatible with different market type units is constructed, the generation business of the power generation plan in the power spot market is powerfully supported, and the method has a promoting effect on the construction of the recommended power spot market.
Fig. 2 is a flowchart of a method for compiling a power generation plan of multiple units according to an embodiment of the present invention, where this embodiment is a refinement of each implementation step based on the foregoing embodiment, and referring to fig. 2, the method may specifically include the following steps:
s201, acquiring target requirement data of multiple units, wherein the multiple units comprise a first type unit and a second type unit, and the first type unit comprises an intermittent unit and an adjustable unit.
S202, determining bidding declaration data according to the target requirement data, wherein the bidding declaration data comprises the following steps: maximum generated power, ramp rate and declared price.
S203, determining a first predicted generating power and a first actual generating power of the intermittent unit at the target moment according to the maximum generating power, and determining a second actual generating power of the second unit at the target moment.
S204, calculating a difference value between the first predicted generated power and the first actual generated power.
Specifically, in the embodiment of the present invention, for the intermittent unit w, in order to make the first predicted generated power fit the first actual generated power as much as possible to reduce the loss of wind energy and light energy, the difference between the first predicted generated power and the first actual generated power needs to be calculated, that is, the value of the first predicted generated power minus the value of the first actual generated power is used to represent the loss of wind energy and light energy, and the smaller the difference, the higher the utilization rate of light energy and wind energy, so the minimum value of the difference value for the optimization purpose of the intermittent unit is formulated, and the difference value is represented as the minimum value of the difference value
And S205, summing the difference values according to the power generation time of the intermittent units in the whole day and the number of the intermittent units, and determining the power generation loss of the intermittent units.
Specifically, the difference calculated in S204 is a difference of a certain intermittent unit w at a target time t, and in an actual application process, the number of the intermittent units is at least one, so to calculate the power generation loss of all the intermittent units in a whole day, the difference needs to be summed according to the power generation duration of the intermittent units w in the whole day and the number of the intermittent units w, and a calculation formula of the power generation loss of the intermittent units in the whole day is:
wherein NT is the number of the generating time periods of the whole day, delta T is the duration of the generating time period, and NW is the total number of the intermittent units.
And S206, calculating the product of the declared price and the second actual generated power.
Specifically, the electricity purchase cost of the second type unit g at the target time t is obtained by calculating the product of the declared price and the second actual generated power, and therefore, the formula for calculating the product is as follows:
and S207, according to the power generation time of the second type of unit in the whole day and the number of the second type of units, summing the products, and determining the power generation cost of the second type of unit.
Specifically, as in the above S205, the product calculated in the above S206 is the product of one of the second-type units g at the target time t, and in the actual power generation process, the number of the second-type units is at least one, so that if the power generation cost of the second-type unit g in the whole day is to be calculated, the product needs to be summed according to the power generation time of the second-type unit g in the whole day and the number of the second-type units g, and the calculation formula of the power generation cost of the second-type unit in the whole day is:
wherein NT is the number of the power generation periods of the whole day, delta T is the duration of the power generation period, and NG is the total number of the second type of units.
S208, carrying out summation operation on the power generation loss and the power generation cost, and selecting the minimum value in the operation result as the consumption values of the intermittent unit and the second type unit in the power generation process; determining a generating power constraint condition in a generating plan compiling method according to the target requirement data and the bidding declaration data, wherein the constraint condition comprises the following steps: the power generation constraint conditions of the operation of the power grid, the power generation constraint conditions of the intermittent unit, the power generation constraint conditions of the adjustable unit and the power generation constraint conditions of the second type of unit.
Specifically, the power generation loss of the intermittent unit in S205 and the power generation cost of the second unit in S207 are summed up, and the minimum value in the summed result is used as the consumption value of the intermittent unit and the second unit in the power generation process, that is, the minimum consumption value is ensured 1 And λ 2 To quantify the importance of different types of units, the formula for calculating the lowest consumption value according to the above calculation formula is:
further, in this embodiment, the constraint condition of the generated power in the power generation planning method is determined according to the target requirement data and the bid declaration data, and may specifically include the following constraint conditions:
firstly, the constraint condition of the generated power of the power grid operation is mainly constrained from three aspects, namely the constraint of the power electric quantity balance, the constraint of the power grid tide transmission power and the constraint of the section transmission power of the power transmission and transformation equipment, specifically, the constraint of the power electric quantity balance is mainly achieved by that the sum of the first actual generated power, the second actual generated power and the generated power of the adjustable unit at the target moment is equal to the predicted generated power of the system load, and the formula is as follows:
wherein,
is the generated power of the adjustable unit wt at the target time t, P t LF The generated power at the target time t is predicted for the system load, and LF is load prediction data.
The constraint on the power flow transmission power of the power grid is realized by enabling the product of a node admittance matrix vector and a node voltage phase angle vector to be equal to a node power vector, and the formula is as follows:
Bθ＝P (3)
wherein, B is a node admittance matrix vector, θ is a node voltage phase angle vector, P is a system node power vector, it should be noted that P in formula (3) is a power vector value of a system node, and P in the other formulas represents generated power of various units instead of vector values, and both represent different data values.
The constraint on the section transmission power of the electric transmission and transformation equipment is realized by enabling the section transmission power of the electric transmission and transformation equipment to be larger than or equal to the minimum value of the section transmission power and smaller than or equal to the maximum value of the section transmission power, and the formula is as follows:
wherein,
is the transmission power, P, of the section l of the power transmission and transformation equipment at a target time t l Cmax 、P l Cmin The maximum value and the minimum value of the transmission power of the section are respectively.
Secondly, the generated power constraint condition of the intermittent unit is that the first predicted generated power is greater than or equal to the first actual generated power and is expressed by a formula as follows:
then, for the generated power constraint condition of the adjustable unit, the generated power of the adjustable unit at the target time t is smaller than or equal to the maximum generated power of the adjustable unit at the target time, and the generated power constraint condition is expressed by a formula as follows:
wherein,
the maximum generating power of the adjustable unit at the target moment is obtained.
In addition, the daily power generation amount of the adjustable unit is greater than or equal to the minimum value of the daily power generation amount and less than or equal to the maximum value of the daily power generation amount, and the daily power generation amount is expressed as follows by a formula:
wherein,
the maximum value and the minimum value of the electricity generation amount of the adjustable unit in wt days are respectively.
Finally, the generated power constraint condition of the second type of unit is that the second actual generated power is greater than or equal to the minimum value of the maximum generated power and is greater than or equal to the maximum value of the maximum generated power, and the second actual generated power is expressed by a formula as follows:
wherein,
respectively the maximum value and the minimum value of the second actual generated power of the second type unit g.
The difference between the value of the second actual generated power at the target time t and the value of the second actual generated power at the previous time t-1 of the target time t is greater than or equal to the negative climbing rate and less than or equal to the positive climbing rate, and is expressed by a formula:
and S209, regulating the generated power of the multiple units in the power grid by combining the consumption value and the generated power constraint condition. Specifically, according to the calculation formula in the above embodiment, other solving algorithms such as an interior point method and a polygon method in the prior art may be adopted, and the formulas (1) to (9) are combined, so that the purpose of adjusting the power generation power of multiple units in the power grid can be achieved.
It should be noted that, in this embodiment, S204 and S205 are used to calculate the power generation loss of the batch-type unit, and S206 and S207 are used to calculate the power generation cost of the second type unit, but in the actual application process, there is no precedence relationship between the calculation of the power generation loss of the batch-type unit and the calculation of the power generation cost of the second type unit. The calculation of the power generation loss of the intermittent unit and then the power generation cost of the second type unit is only used for illustration in fig. 2, while the calculation of the power generation cost of the second type unit and then the calculation of the power generation loss of the intermittent unit are not shown in fig. 2.
By adopting the technical scheme, the invention can ensure that a power generation planning method compatible with different market type units is constructed on the basis of normal operation of a power grid by reducing consumption values of different types of units in the power generation process, determining an optimization target of the multiple units in the power generation process and the constraint condition of the power generation power of the multiple types of units, and improving the power generation efficiency.
Fig. 3 is a schematic structural diagram of a multi-unit power generation planning apparatus according to another embodiment of the present invention, which is adapted to execute a multi-unit power generation planning method according to another embodiment of the present invention. As shown in fig. 3, the apparatus may specifically include: an obtaining module 301, a first determining module 302, a second determining module 303, an operating module 304, a third determining module 305 and an adjusting module 306, wherein;
the obtaining module 301 is configured to obtain target requirement data of multiple units, where the multiple units include a first type unit and a second type unit, and the first type unit includes an intermittent unit and an adjustable unit.
A first determining module 302, configured to determine bid declaration data according to the objective requirement data, where the bid declaration data includes: maximum generated power, ramp rate and declared price.
The second determining module 303 is configured to determine a first predicted generated power and a first actual generated power of the intermittent plant unit at the target time according to the maximum generated power, and determine a second actual generated power of the second type of plant unit at the target time.
The operation module 304 is used for operating the first predicted generated power and the first actual generated power and determining the power generation loss of the intermittent unit; and calculating the declared price and the second actual generating power to determine the generating cost of the second type of unit.
A third determining module 305, configured to determine consumption values of the intermittent unit and the second type unit in the power generation process according to the power generation loss and the power generation cost; determining a power generation power constraint condition in a power generation planning method according to the target requirement data and the bidding declaration data, wherein the constraint condition comprises the following steps: the power generation constraint conditions of the operation of the power grid, the power generation constraint conditions of the intermittent unit, the power generation constraint conditions of the adjustable unit and the power generation constraint conditions of the second type of unit.
And the adjusting module 306 is used for adjusting the generated power of the multiple units in the power grid by combining the consumption value and the generated power constraint condition.
Further, the operation module 304 includes:
and the difference value operation submodule is used for calculating the difference value between the first predicted generating power and the first actual generating power.
And the first summation operation submodule is used for carrying out summation operation on the difference value according to the power generation time of the intermittent units in the whole day and the number of the intermittent units so as to determine the power generation loss of the intermittent units.
Further, the operation module 304 further includes:
and the product operation submodule is used for calculating the product of the declared price and the second actual power generation power.
And the second summation operation submodule is used for carrying out summation operation on the product according to the power generation time of the second set in the whole day and the number of the second set, and determining the power generation cost of the second set.
Further, the third determining module 305 includes: and the third summation operation submodule is used for carrying out summation operation on the power generation loss and the power generation cost, and selecting the minimum value in the operation result as the consumption values of the intermittent unit and the second unit in the power generation process.
Further, the third determining module 305 further includes: the constraint condition determining submodule is specifically used for determining a power generation constraint condition of grid operation, and comprises the following steps: the sum of the first actual generated power, the second actual generated power and the generated power of the adjustable unit at the target moment is equal to the predicted generated power of the system load; the product of the node admittance matrix vector and the node voltage phase angle vector is equal to the node power vector; the section transmission power of the power transmission and transformation equipment is greater than or equal to the minimum value of the section transmission power and less than or equal to the maximum value of the section transmission power. The method is used for determining the power generation constraint conditions of the intermittent unit and comprises the following steps: the first predicted generated power is greater than or equal to the first actual generated power. The method is used for determining the generating power constraint conditions of the adjustable unit and comprises the following steps: the generated power of the adjustable unit at the target moment is less than or equal to the maximum generated power of the adjustable unit at the target moment; the daily generated energy of the adjustable unit is greater than or equal to the minimum value of the daily generated energy and is less than or equal to the maximum value of the daily generated energy. The method is used for determining the generated power constraint conditions of the second type of unit and comprises the following steps: the second actual generated power is greater than or equal to the minimum value of the maximum generated power and greater than or equal to the maximum value of the maximum generated power; the difference value between the value of the second actual generated power at the target time t and the value of the second actual generated power at the moment t-1 before the target time t is greater than or equal to the negative climbing rate and less than or equal to the positive climbing rate.
Further, the target requirement data includes: the load forecasting power generation data, the power generation data of the first type of unit and the maintenance data of the power transmission and transformation equipment.
Further, the load prediction generated power data includes: predicting the generating power of the system load and predicting the generating power of the bus load; the maintenance data of the power transmission and transformation equipment comprises: the section of the power transmission and transformation equipment transmits power.
The multi-unit power generation planning device provided by the embodiment of the invention can execute the multi-unit power generation planning method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Fig. 4 is a schematic structural diagram of an apparatus according to another embodiment of the present invention, and as shown in fig. 4, the apparatus may include:
a processor 401, and a memory 402 connected to the processor 401; the memory 402 is used to store a computer program for executing the multi-unit power generation planning method in the above-described embodiment; the processor 401 is used to invoke and execute computer programs in the memory 402. The method for compiling the power generation plan of the multiple units at least comprises the following steps:
acquiring target requirement data of multiple units, wherein the multiple units comprise a first type unit and a second type unit, and the first type unit comprises an intermittent unit and an adjustable unit; determining bid declaration data based on the objective requirement data, wherein the bid declaration data comprises: maximum generated power, climbing rate and declared price; determining a first predicted generating power and a first actual generating power of the intermittent set at a target moment according to the maximum generating power, and determining a second actual generating power of the second set at the target moment; calculating the first predicted power generation power and the first actual power generation power, and determining the power generation loss of the intermittent unit; and calculating the declared price and the second actual generating power to determine the generating cost of the second type of unit. Determining consumption values of the intermittent unit and the second unit in the power generation process according to the power generation loss and the power generation cost; determining a power generation power constraint condition in a power generation planning method according to the target requirement data and the bidding declaration data, wherein the constraint condition comprises the following steps: the method comprises the following steps of (1) generating power constraint conditions of grid operation, generating power constraint conditions of intermittent units, generating power constraint conditions of adjustable units and generating power constraint conditions of second-type units; and regulating the generated power of the multiple units in the power grid by combining the consumption value and the generated power constraint condition.
An embodiment of the present invention may further provide a storage medium, where the storage medium stores a computer program, and when the computer program is executed by the processor 401, the method implements each step in the method for generating a power generation plan of multiple units in the foregoing embodiment, where the method at least includes the following steps:
acquiring target requirement data of multiple units, wherein the multiple units comprise a first type unit and a second type unit, and the first type unit comprises an intermittent unit and an adjustable unit; determining bid claim data based on the objective requirement data, wherein the bid claim data comprises: maximum generated power, climbing rate and declared price; determining a first predicted generating power and a first actual generating power of the intermittent set at a target moment according to the maximum generating power, and determining a second actual generating power of the second set at the target moment; calculating the first predicted power generation power and the first actual power generation power, and determining the power generation loss of the intermittent unit; and calculating the declared price and the second actual generating power to determine the generating cost of the second type of unit. Determining consumption values of the intermittent unit and the second unit in the power generation process according to the power generation loss and the power generation cost; determining a generating power constraint condition in a generating plan compiling method according to the target requirement data and the bidding declaration data, wherein the constraint condition comprises the following steps: the method comprises the following steps of (1) generating power constraint conditions of grid operation, generating power constraint conditions of intermittent units, generating power constraint conditions of adjustable units and generating power constraint conditions of second-type units; and regulating the generated power of the multiple units in the power grid by combining the consumption value and the generated power constraint condition.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present invention, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps in the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may also be stored in a computer-readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (8)
1. A method for compiling a power generation plan for a plurality of units is characterized by comprising the following steps:
acquiring target requirement data of multiple units, wherein the multiple units comprise a first type unit and a second type unit, and the first type unit comprises an intermittent unit and an adjustable unit;
determining bid claim data based on the objective requirement data, wherein the bid claim data comprises: maximum generated power, climbing rate and declared price;
determining a first predicted generating power and a first actual generating power of the intermittent unit at a target moment according to the maximum generating power, and determining a second actual generating power of the second unit at the target moment;
calculating the first predicted power generation power and the first actual power generation power, and determining the power generation loss of the intermittent unit; calculating the declared price and the second actual power generation power to determine the power generation cost of the second type of unit;
determining consumption values of the intermittent unit and the second type unit in the power generation process according to the power generation loss and the power generation cost; determining a power generation constraint condition in the power generation planning method according to the target requirement data and the bidding declaration data, wherein the constraint condition comprises: the system comprises a power generation power constraint condition of power grid operation, a power generation power constraint condition of the intermittent unit, a power generation power constraint condition of the adjustable unit and a power generation power constraint condition of the second type of unit;
combining the consumption value and the generated power constraint condition to adjust the generated power of the multiple units in the power grid;
wherein the determining the power generation loss of the intermittent plant by calculating the first predicted power generation power and the first actual power generation power includes:
calculating a difference between the first predicted generated power and the first actual generated power;
according to the power generation duration of the intermittent units in the whole day and the number of the intermittent units, carrying out summation operation on the difference values to determine the power generation loss of the intermittent units;
wherein the calculating the declared price and the second actual generated power to determine the power generation cost of the second type of unit includes:
calculating a product of the declared price and the second actual generated power;
and according to the power generation time of the second type of unit in the whole day and the number of the second type of units, carrying out summation operation on the product, and determining the power generation cost of the second type of unit.
2. The multi-unit power generation planning method according to claim 1, wherein the target requirement data includes: and load prediction power generation data, the power generation power data of the first type of unit and maintenance data of the power transmission and transformation equipment.
3. The multi-unit power generation planning method of claim 2, wherein the load prediction generated power data comprises: predicting the generating power of the system load and the generating power of the bus load; the maintenance data of the power transmission and transformation equipment comprises: the section of the power transmission and transformation equipment transmits power.
4. The method for generating a power plan with a plurality of units according to claim 1, wherein the determining consumption values of the intermittent units and the second type units during power generation according to the power generation loss and the power generation cost comprises:
and performing summation operation on the power generation loss and the power generation cost, and selecting the minimum value in the operation result as the consumption values of the intermittent unit and the second unit in the power generation process.
5. The multi-unit power generation planning method of claim 3, wherein the power generation constraints for grid operation include:
the sum of the first actual generated power, the second actual generated power and the generated power of the adjustable unit at the target moment is equal to the predicted generated power of the system load;
the product of the node admittance matrix vector and the node voltage phase angle vector is equal to the node power vector;
the section transmission power of the electric transmission and transformation equipment is greater than or equal to the minimum value of the section transmission power and is less than or equal to the maximum value of the section transmission power;
the generated power constraint conditions of the intermittent unit comprise: the first predicted generated power is greater than or equal to the first actual generated power;
the generated power constraint conditions of the adjustable unit comprise: the generating power of the adjustable unit at the target moment is less than or equal to the maximum generating power of the adjustable unit at the target moment; the daily generated energy of the adjustable unit is greater than or equal to the minimum value of the daily generated energy and is less than or equal to the maximum value of the daily generated energy;
the generated power constraint conditions of the second type of unit comprise: the second actual generated power is greater than or equal to the minimum value of the maximum generated power and greater than or equal to the maximum value of the maximum generated power; and the difference value between the value of the second actual generated power at the target moment t and the value of the second actual generated power at the moment t-1 before the target moment t is greater than or equal to the negative climbing rate and less than or equal to the positive climbing rate.
6. A multi-unit power generation planning apparatus applied to the multi-unit power generation planning method according to any one of claims 1 to 5, the apparatus comprising:
the system comprises an acquisition module, a processing module and a display module, wherein the acquisition module is used for acquiring target requirement data of multiple units, the multiple units comprise a first type unit and a second type unit, and the first type unit comprises an intermittent unit and an adjustable unit;
a first determining module, configured to determine bid declaration data according to the objective requirement data, where the bid declaration data includes: maximum generated power, climbing rate and declared price;
the second determining module is used for determining a first predicted generating power and a first actual generating power of the intermittent unit at a target moment according to the maximum generating power and determining a second actual generating power of the second type unit at the target moment;
the operation module is used for operating the first predicted generating power and the first actual generating power and determining the generating loss of the intermittent unit; calculating the declared price and the second actual power generation power to determine the power generation cost of the second type of unit;
the third determining module is used for determining consumption values of the intermittent unit and the second type unit in the power generation process according to the power generation loss and the power generation cost; determining a power generation constraint condition in the power generation planning method according to the target requirement data and the bidding declaration data, wherein the constraint condition comprises: the system comprises a power generation power constraint condition of power grid operation, a power generation power constraint condition of the intermittent unit, a power generation power constraint condition of the adjustable unit and a power generation power constraint condition of the second type of unit;
the adjusting module is used for adjusting the generating power of the multiple units in the power grid by combining the consumption value and the generating power constraint condition;
wherein the determining the power generation loss of the intermittent plant by calculating the first predicted power generation power and the first actual power generation power includes:
calculating a difference between the first predicted generated power and the first actual generated power;
according to the power generation duration of the intermittent units in the whole day and the number of the intermittent units, carrying out summation operation on the difference values to determine the power generation loss of the intermittent units;
wherein the calculating the declared price and the second actual generated power to determine the power generation cost of the second type of unit includes:
calculating a product of the declared price and the second actual generated power;
and according to the power generation time of the second type of unit in the whole day and the number of the second type of units, carrying out summation operation on the product, and determining the power generation cost of the second type of unit.
7. An apparatus for performing a multi-unit power generation planning method, comprising:
a processor, and a memory coupled to the processor;
the memory is used for storing a computer program for executing at least the multi-unit power generation planning method according to any one of claims 1 to 5;
the processor is used for calling and executing the computer program in the memory.
8. A storage medium, characterized in that the storage medium stores a computer program which, when executed by a processor, implements each step in the multi-unit power generation planning method according to any one of claims 1 to 5.
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