CN111724253A - Hydropower transaction execution deviation scheduling method, system, device and storage medium - Google Patents
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Abstract
The invention discloses a hydropower transaction execution deviation scheduling method, a system, a device and a storage medium. The method comprises the following steps: acquiring the transaction plan electric quantity of the hydroelectric generating set, and determining a power generation plan according to the transaction plan electric quantity and a first constraint condition; determining scheduling plan electric quantity according to the power generation plan, and scheduling the standby generator set and the hydroelectric generating set to generate power simultaneously; determining the actual scheduling electric quantity of the hydroelectric generating set to obtain the deviation electric quantity of the hydroelectric generating set in each preset time period; and acquiring a reference electricity price of the electricity trading market, and settling the execution deviation fee of the water and electricity trading. The invention provides a fair and efficient mechanism for executing deviation scheduling and compensating expense settlement for the participation of the hydroelectric generating set in the medium-and-long-term electric power market transaction, ensures that the hydroelectric generating set can participate in the medium-and-long-term electric power market transaction, ensures the fair running of the electric power market, improves the utilization rate of hydroelectric resources, avoids the waste of the hydroelectric resources, and can be widely applied to the technical field of the electric power market.
Description
Technical Field
The invention relates to the technical field of power markets, in particular to a hydropower transaction execution deviation scheduling method, system and device.
Background
The hydroelectric generation is that the potential energy contained in rivers, lakes and the like which are positioned at high positions and have potential energy is converted into the kinetic energy of a water turbine by utilizing the water flow to drive a generator to generate electric energy. Hydroelectric power generation is in a sense the process of converting the potential energy of water into mechanical energy and then into electrical energy. Scientists build hydropower stations by utilizing hydraulic engineering, mechanical physics and the like according to the natural condition of water level fall, people can use cheap and pollution-free electric power, and low-level water is circularly distributed in all places of the earth by absorbing sunlight, so that a high-level water source can be recovered. In addition, hydroelectric power generation can control flooding, provide irrigation water, and improve river shipping.
The hydropower resources in China are quite rich, however, the actual output of the hydroelectric generating set is constrained by various conditions which cannot be controlled manually, such as storage capacity, water head, upstream-downstream coupling and the like, and the preset planned electric quantity may not be finished during actual power generation. Therefore, the power system in China mainly depends on the thermal power generating unit to generate power, the hydroelectric power generating unit is only used as a peak shaving or standby unit, fuel consumed by the thermal power generating unit belongs to non-renewable energy, and the environment can be polluted during power generation. Therefore, the existing power system cannot reasonably utilize water and electricity resources to generate electricity, is not beneficial to the stable operation of the power system, greatly reduces the utilization rate of the water and electricity resources, causes the waste of the water and electricity resources, and can also cause environmental pollution.
Disclosure of Invention
The present invention aims to solve at least to some extent one of the technical problems existing in the prior art.
Therefore, an object of an embodiment of the present invention is to provide a method for scheduling deviation in execution of a hydropower transaction, in which when a hydropower unit cannot complete a planned transaction electric quantity, a backup generator set such as a thermal power generator can be scheduled to eliminate the deviation, and the hydropower unit pays out corresponding compensation, so as to ensure that a power system can complete a predetermined generated energy and ensure stable operation of the power system.
It is another object of embodiments of the present invention to provide a system for scheduling the execution deviation of a hydroelectric transaction.
In order to achieve the technical purpose, the technical scheme adopted by the embodiment of the invention comprises the following steps:
in a first aspect, an embodiment of the present invention provides a hydropower transaction execution deviation scheduling method, including the following steps:
acquiring the trading plan electric quantity of the hydroelectric generating set in a preset time period, and determining the generating plan of the hydroelectric generating set according to the trading plan electric quantity and a first constraint condition;
determining the scheduling plan electric quantity of the hydroelectric generating set in a preset time period according to the power generation plan, and scheduling the standby generating set and the hydroelectric generating set to generate power simultaneously according to the scheduling plan electric quantity and the trading plan electric quantity;
determining the actual scheduling electric quantity of the hydroelectric generating set in the preset time period, and obtaining the deviation electric quantity of the hydroelectric generating set in the preset time period according to the actual scheduling electric quantity and the trading plan electric quantity;
and acquiring a reference electricity price of a preset time period in the electricity trading market, and settling the execution deviation fee of the hydropower trading of the preset time period according to the reference electricity price and the deviation electric quantity.
Further, in an embodiment of the present invention, the step of acquiring a trading plan electric quantity of the hydroelectric generating set for a predetermined time period, and determining a power generation plan of the hydroelectric generating set according to the trading plan electric quantity and a first constraint condition includes:
determining the transaction plan electric quantity of the hydroelectric generating set in a preset time period according to the total transaction electric quantity and the electric quantity decomposition mode of the hydroelectric generating set;
and calculating a power generation plan of the hydroelectric generating set through a clearing model according to the electric quantity of the trading plan and the first constraint condition.
Further, in one embodiment of the present invention, the first constraint includes a reservoir capacity constraint, a head constraint, an upstream and downstream coupling constraint.
Further, in an embodiment of the present invention, the step of determining a scheduled plan electric quantity of the hydroelectric generating set for a predetermined period of time according to the power generation plan, and scheduling the backup generating set and the hydroelectric generating set to generate power simultaneously according to the scheduled plan electric quantity and the trading plan electric quantity includes:
determining the scheduling plan electric quantity of the hydroelectric generating set in a preset time period according to the power generation plan;
if the scheduling plan electric quantity is determined to be smaller than the transaction plan electric quantity, scheduling the standby generator set and the hydroelectric generating set to generate power simultaneously in the preset time period;
the standby generator set comprises a wind generating set, a solar generating set and a thermal generating set.
Further, in an embodiment of the present invention, the step of determining an actual scheduled electric quantity of the hydroelectric generating set in a predetermined time period, and obtaining a deviation electric quantity of the hydroelectric generating set in the predetermined time period according to the actual scheduled electric quantity and the trading plan electric quantity includes:
acquiring and recording the actual scheduling electric quantity of the hydroelectric generating set in a preset time period in real time;
and calculating the difference between the transaction plan electric quantity and the actual scheduling electric quantity to obtain the deviation electric quantity of the hydroelectric generating set in the preset time period.
Further, in an embodiment of the present invention, the step of acquiring a reference electricity price for a predetermined period of time in the electricity trading market, and settling a deviation charge for performing the hydropower trading for the predetermined period of time based on the reference electricity price and the deviation amount of electricity includes:
acquiring node electricity prices of all power transmission channels in the power trading market, and respectively calculating the mean value of the node electricity prices of all the power transmission channels in a preset time period to obtain a reference electricity price of the preset time period;
and calculating to obtain the hydropower transaction execution deviation fee in a preset time period according to the reference electricity price and the deviation electricity quantity.
Further, in one embodiment of the present invention, the hydropower transaction execution deviation scheduling method further comprises the steps of:
and according to the output condition of the standby generator set within a preset time period, allocating the hydropower transaction execution deviation cost and compensating the hydropower transaction execution deviation cost to the standby generator set.
In a second aspect, an embodiment of the present invention provides a system for scheduling execution deviation of a hydropower transaction, including:
the acquisition module is used for acquiring the trading plan electric quantity of the hydroelectric generating set in a preset time period and determining the generating plan of the hydroelectric generating set according to the trading plan electric quantity and a first constraint condition;
the unit scheduling module is used for determining scheduling plan electric quantity of the hydroelectric generating set in a preset time period according to the power generation plan and scheduling the standby generating set and the hydroelectric generating set to generate power simultaneously according to the scheduling plan electric quantity and the trading plan electric quantity;
the deviation electric quantity calculation module is used for determining the actual scheduling electric quantity of the hydroelectric generating set in the preset time period and obtaining the deviation electric quantity of the hydroelectric generating set in the preset time period according to the actual scheduling electric quantity and the transaction plan electric quantity;
and the deviation charge settlement module is used for acquiring the reference electricity price of the electricity trading market in a preset time period and settling the deviation charge of the hydropower trading execution in the preset time period according to the reference electricity price and the deviation electric quantity.
In a third aspect, an embodiment of the present invention provides a hydropower transaction execution deviation scheduling device, including:
at least one processor;
at least one memory for storing at least one program;
the at least one program, when executed by the at least one processor, causes the at least one processor to implement the method of hydropower transaction execution deviation scheduling.
In a fourth aspect, embodiments of the present invention also provide a computer-readable storage medium having stored therein processor-executable instructions, which when executed by a processor, are configured to perform a method of performing biased scheduling for a hydroelectric transaction.
Advantages and benefits of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention:
according to the technical scheme of the embodiment of the invention, when the hydroelectric generating set cannot complete the transaction planning electric quantity, the standby generating sets such as thermal power sets and the like can be scheduled to eliminate the deviation amount, and the hydroelectric generating set pays out corresponding compensation, so that the electric power system can complete the preset generated energy, the stable operation of the electric power system is ensured, the utilization rate of hydroelectric resources is improved, the waste of hydroelectric resources is avoided, and meanwhile, the pollution to the environment is reduced because the hydroelectric generating set mainly generates electricity and other resources such as thermal power and the like are used as standby.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description is made on the drawings of the embodiments of the present invention or the related technical solutions in the prior art, and it should be understood that the drawings in the following description are only for convenience and clarity of describing some embodiments in the technical solutions of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for scheduling execution deviation of a hydropower transaction according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a system for scheduling deviations in execution of a hydroelectric transaction according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a hydroelectric transaction execution deviation scheduling apparatus according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. The step numbers in the following embodiments are provided only for convenience of illustration, the order between the steps is not limited at all, and the execution order of each step in the embodiments can be adapted according to the understanding of those skilled in the art.
In the description of the present invention, the meaning of a plurality is two or more, if there is a description to the first and the second for the purpose of distinguishing technical features, it is not understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features. Furthermore, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art.
In the medium and long term electric power market transaction activities, a form of a spread contract is generally adopted, and a transaction contract is signed at the day to clearly specify the electric quantity and the amount of the transaction; the power dispatching mechanism arranges sending and transmitting tasks for the generator set according to the contract information, and due to the limitation of various constraint conditions, the dispatching plan power quantity in the dispatching arrangement given in the day before is probably not completely consistent with the trading plan power quantity. On the other hand, due to the particularity of the hydroelectric generating set, various constraint conditions such as reservoir capacity, water head, upstream-downstream coupling and the like cannot be manually controlled or predicted, so that the actual power generation amount (namely the actual scheduling power amount) of the hydroelectric generating set may not be enough to supply the trading plan power amount.
The difference value between the actual scheduling electric quantity and the trading plan electric quantity is the deviation electric quantity, and the settlement of the deviation electric quantity is also the core problem of the trading settlement mechanism of the electric power market.
Referring to fig. 1, an embodiment of the present invention provides a hydropower transaction execution deviation scheduling method, including the following steps:
s101, acquiring the trading plan electric quantity of each hydroelectric generating set in a preset time period, and determining a power generation plan of the hydroelectric generating set according to the trading plan electric quantity and a first constraint condition;
specifically, on the transaction day, the hydroelectric generating set can participate in bilateral negotiation transaction by using the identity of a common set, the mode of bargaining price, planned electric quantity and decomposed electric quantity is determined in the treaty, and then the power generation plan of the hydroelectric generating set is formulated. Step S101 specifically includes the following steps:
s1011, determining the trading plan electric quantity of each hydroelectric generating set in a preset time period according to the total trading electric quantity and the electric quantity decomposition mode of the hydroelectric generating set;
specifically, the total transaction electric quantity is determined by the transaction contract, the electric quantity decomposition mode can be uniformly decomposed to each time interval, or can be decomposed according to an electric power load curve, and the transaction planned electric quantity of each hydroelectric generating set in a predetermined time interval can be calculated according to the total transaction electric quantity and the pre-selected electric quantity decomposition mode.
And S1012, calculating a power generation plan of the hydroelectric generating set through a clearing model according to the electric quantity of the trading plan and the first constraint condition.
Specifically, the power generation plan can be calculated through a clearing model according to the obtained trading plan electric quantity and the related constraint conditions of the hydroelectric generating set.
It will be appreciated that due to the particularities of hydroelectric generating sets, the day-ahead constraints may change unpredictably during the day of power generation, and therefore the power generation schedule established day-ahead may deviate from the actual power generation.
Further as an alternative embodiment, the first constraint includes a reservoir capacity constraint, a head constraint, and an upstream and downstream coupling constraint.
S102, determining scheduling plan electric quantity of each hydroelectric generating set in a preset time period according to a power generation plan, and scheduling the standby generating set and the hydroelectric generating set to generate power simultaneously according to the scheduling plan electric quantity and the trading plan electric quantity;
specifically, scheduling plan electric quantity of the hydroelectric generating set in each time interval is scheduled in advance according to the obtained power generation plan, when deviation occurs between the scheduling plan electric quantity and the trading plan electric quantity, the hydroelectric generating set cannot complete supply of the trading plan electric quantity, and at the moment, the standby generating set can be scheduled to generate power at the same time to eliminate the deviation. Step S102 specifically includes the following steps:
s1021, determining scheduling plan electric quantity of the hydroelectric generating set in a preset time period according to the power generation plan;
s1022, if the scheduling plan electric quantity is determined to be smaller than the trading plan electric quantity, the standby generator set and the hydroelectric generating set are scheduled to generate power simultaneously in the preset time period;
in the embodiment of the invention, because the scheduling plan electric quantity and the transaction plan electric quantity are values in each preset time period, whether the hydroelectric generating set can finish the supply of the transaction plan in each preset time period can be accurately predicted, so that the standby generating set is reasonably arranged to generate electricity, and the stable operation of the power system is ensured.
Optionally, the backup generator set comprises a wind generator set, a solar generator set and a thermal generator set.
S103, determining the actual scheduling electric quantity of each hydroelectric generating set in a preset time period, and obtaining the deviation electric quantity of each hydroelectric generating set in the preset time period according to the actual scheduling electric quantity and the trading plan electric quantity;
specifically, on the operation day, the hydroelectric generating set generates power according to a power generation plan, and the actual power generation amount is still influenced by various kinds of constraint conditions such as storage capacity, water head, upstream-downstream coupling and the like. The relationship between the generated energy of the hydroelectric generating set and the water head and the water amount can be described as follows:
wherein, Pi GT(t) represents the actual scheduling electric quantity of the hydroelectric generating set i in the t period, ηiThe comprehensive average output coefficient of the hydroelectric generating set i is shown,
representing the generated flow of the hydropower station in the time period t,
influenced by reservoir capacity and upstream-downstream coupling, Hi(t) represents the average net head, Ω, over a period of tHRepresenting the collection of hydroelectric generating sets within the system.
The actual scheduling electric quantity of the hydroelectric generating set in each time period can be known to be closely related to various constraint conditions through the formula. It should be understood that the above formula is only used to reflect the relationship between the actual scheduling electric quantity of the hydroelectric generating set and the constraint condition, and is not limited to the method for finally calculating the actual scheduling electric quantity.
In the process of generating electricity by the hydroelectric generating set, the actual scheduling electric quantity of each time interval can be recorded in real time, and the deviation between the actual scheduling electric quantity and the transaction plan electric quantity is the deviation electric quantity. Step S103 specifically includes the following steps:
s1031, acquiring and recording actual scheduling electric quantity of each hydroelectric generating set in a preset time period in real time;
and S1032, calculating a difference value between the transaction plan electric quantity and the actual scheduling electric quantity to obtain the deviation electric quantity of each hydroelectric generating set in a preset time period.
Specifically, the deviation electric quantity is calculated as follows:
wherein, Δ Pi GT(t) represents the deviation electric quantity of the hydroelectric generating set i in the t period,
the electric quantity of the trading plan of the hydroelectric generating set i in the time period t is decomposed by the physical deal.
And S104, acquiring the reference electricity price of each preset time period in the electricity trading market, and settling the execution deviation fee of the hydropower trading of each preset time period according to the reference electricity price and the deviation electric quantity.
Specifically, the reference electricity price can be obtained by averaging the node electricity prices of all the power transmission channels in the time period, and the hydropower transaction execution deviation cost can be calculated according to the reference electricity price and the deviation electric quantity. Step S104 specifically includes the following steps:
s1041, obtaining node electricity prices of all power transmission channels in the power trading market, and respectively calculating the mean value of the node electricity prices of all the power transmission channels in all the preset time periods to obtain reference electricity prices of all the preset time periods;
specifically, the reference electricity price may be determined using the following formula: dt＝∑(ik,t×Dk,t)/∑ik,t
Wherein t represents a predetermined period of time in hours; dtRepresents the reference electricity price of the t period, and the unit is element/MW; dk,tRepresenting the node electricity price of the kth power transmission channel in unit of element/MW in a t period; i.e. ik,tRepresenting the operating state variable of the kth power transmission channel during a period t, i when the power transmission channel is out of servicek,tIs 0, when the transmission channel is running ik,tIs 1.
Optionally, the reference electricity price may also be obtained by multiplying an average value of node electricity prices of all power transmission channels in the time period by a certain fixed coefficient, and in practical application, the specific principle is drawn up by the energy regulatory department with the market operating organization, and an opinion is solicited from market members.
And S1042, calculating to obtain the hydropower transaction execution deviation cost of each preset time period according to the reference electricity price and the deviation electricity quantity.
Specifically, the calculation formula of the hydropower transaction execution deviation fee is as follows:
wherein R isi(t) represents the hydropower transaction execution deviation fee of the hydroelectric generating set i in the time period t, DtIndicating the reference electricity prices during the t period.
The deviation cost which should be delivered by the hydroelectric generating set i in the time period t can be calculated through the formula, and the deviation cost is compensated by the hydroelectric generating set.
For example, the hydroelectric generating set a and the power selling company B sign a bilateral negotiation trading contract, the monthly trading electric quantity of a month is agreed to be 3600MWh, and the monthly trading electric quantity is decomposed to hours in a uniformly distributed mode, namely the trading electric quantity of each hour is 5 MWh. In actual operation, the electric quantity of the hydroelectric generating set A in a certain hour is only 4MWh, and the deviation electric quantity is 1 MWh. The electric power dispatching mechanism needs to call a standby unit to complement the shortage, and if the average reference electricity price of the electric energy in the hour is 500 yuan/MWh, the hydroelectric generating set A needs to pay 500 yuan of compensation cost to the standby unit.
The embodiment of the invention provides a reasonable and efficient deviation scheduling and compensation expense settlement mechanism for the hydro-power generating unit to participate in medium and long-term electric power market trading, when the hydro-power generating unit cannot complete the trading plan electric quantity due to objective conditions, the thermal power and other standby generating units can be scheduled to eliminate the deviation amount, and the hydro-power generating unit pays corresponding compensation, so that the electric power system can complete the preset generated energy, the stable operation of the electric power system is ensured, the utilization rate of hydroelectric resources is improved, the waste of hydroelectric resources is avoided, and the pollution to the environment is reduced.
The embodiment of the invention is suitable for the areas with smaller water-electricity installed capacity ratio. Since hydroelectric power is influenced by various factors, if the hydroelectric power is incorporated into spot market optimization, a clearing calculation model is very complex. In the area with smaller water and electricity installed capacity, the method can be implemented through the embodiment of the invention, so that the market mechanism can be simplified, and the right of the hydroelectric generating set to participate in the medium and long-term electricity market is also given.
Further as an optional embodiment, the hydropower transaction execution deviation scheduling method further comprises the following steps:
and S105, according to the output condition of the standby generator set in each preset time period, allocating the execution deviation cost of the hydropower transaction and compensating the execution deviation cost to the standby generator set.
Specifically, the following formula is adopted in the embodiment of the invention to distribute and compensate the electric power transaction deviation cost of each preset time period
Wherein R isn,tRepresenting the compensation cost obtained by the standby unit n in the time period t, wherein the unit is element; ri(t) representing the hydropower transaction execution deviation cost of the hydropower unit i in the unit of element in the t time period; pn,tRepresenting the output electric quantity of the standby unit n in a time period t, wherein the unit is MW; delta Pi GTAnd (t) represents the deviation electric quantity of the hydroelectric generating set i in the t period, and the unit is MW.
The compensation cost which the hydroelectric generating set should pay to each spare generating set in each preset time period can be calculated through the formula.
Referring to fig. 2, an embodiment of the present invention provides a system for scheduling execution deviation of a hydropower transaction, including:
the acquisition module is used for acquiring the trading plan electric quantity of each hydroelectric generating set in a preset time period and determining the power generation plan of the hydroelectric generating set according to the trading plan electric quantity and a first constraint condition;
the unit scheduling module is used for determining scheduling plan electric quantity of each hydroelectric generating unit in a preset time period according to the power generation plan and scheduling the standby generating unit and the hydroelectric generating unit to generate power simultaneously according to the scheduling plan electric quantity and the trading plan electric quantity;
the deviation electric quantity calculation module is used for determining the actual scheduling electric quantity of each hydroelectric generating set in the preset time period and obtaining the deviation electric quantity of each hydroelectric generating set in the preset time period according to the actual scheduling electric quantity and the trading plan electric quantity;
and the deviation charge settlement module is used for acquiring the reference electricity price of each preset time period in the electric power trading market and settling the deviation charge of the hydropower trading execution of each preset time period according to the reference electricity price and the deviation electric quantity.
The contents in the above method embodiments are all applicable to the present system embodiment, the functions specifically implemented by the present system embodiment are the same as those in the above method embodiment, and the beneficial effects achieved by the present system embodiment are also the same as those achieved by the above method embodiment.
Referring to fig. 3, an embodiment of the present invention provides a hydropower transaction execution deviation scheduling apparatus, including:
at least one processor;
at least one memory for storing at least one program;
the at least one program, when executed by the at least one processor, causes the at least one processor to implement a method of hydroelectric transaction execution deviation scheduling as described above.
The contents in the above method embodiments are all applicable to the present apparatus embodiment, the functions specifically implemented by the present apparatus embodiment are the same as those in the above method embodiments, and the advantageous effects achieved by the present apparatus embodiment are also the same as those achieved by the above method embodiments.
Embodiments of the present invention also provide a computer-readable storage medium having stored therein processor-executable instructions, which when executed by a processor, are configured to perform a method of performing deviation scheduling for a hydropower transaction.
The computer-readable storage medium of the embodiment of the invention can execute the hydropower transaction execution deviation scheduling method provided by the embodiment of the method of the invention, can execute any combination of the implementation steps of the embodiment of the method, and has corresponding functions and beneficial effects of the method.
In alternative embodiments, the functions/acts noted in the block diagrams may occur out of the order noted in the operational illustrations. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality/acts involved. Furthermore, the embodiments presented and described in the flow charts of the present invention are provided by way of example in order to provide a more thorough understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed and in which sub-operations described as part of larger operations are performed independently.
Furthermore, although the present invention is described in the context of functional modules, it should be understood that, unless otherwise stated to the contrary, one or more of the above-described functions and/or features may be integrated in a single physical device and/or software module, or one or more of the functions and/or features may be implemented in a separate physical device or software module. It will also be appreciated that a detailed discussion of the actual implementation of each module is not necessary for an understanding of the present invention. Rather, the actual implementation of the various functional modules in the apparatus disclosed herein will be understood within the ordinary skill of an engineer, given the nature, function, and internal relationship of the modules. Accordingly, those skilled in the art can, using ordinary skill, practice the invention as set forth in the claims without undue experimentation. It is also to be understood that the specific concepts disclosed are merely illustrative of and not intended to limit the scope of the invention, which is defined by the appended claims and their full scope of equivalents.
The above functions, if implemented in the form of software functional units and sold or used as a separate product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the above method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Further, the computer readable medium could even be paper or another suitable medium upon which the above described program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
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.
In the foregoing description of the specification, reference to the description of "one embodiment/example," "another embodiment/example," or "certain embodiments/examples," etc., 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, schematic representations of the above terms 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.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A hydropower transaction execution deviation scheduling method is characterized by comprising the following steps:
acquiring the trading plan electric quantity of the hydroelectric generating set in a preset time period, and determining the generating plan of the hydroelectric generating set according to the trading plan electric quantity and a first constraint condition;
determining the scheduling plan electric quantity of the hydroelectric generating set in a preset time period according to the power generation plan, and scheduling the standby generating set and the hydroelectric generating set to generate power simultaneously according to the scheduling plan electric quantity and the trading plan electric quantity;
determining the actual scheduling electric quantity of the hydroelectric generating set in the preset time period, and obtaining the deviation electric quantity of the hydroelectric generating set in the preset time period according to the actual scheduling electric quantity and the trading plan electric quantity;
and acquiring a reference electricity price of a preset time period in the electricity trading market, and settling the execution deviation fee of the hydropower trading of the preset time period according to the reference electricity price and the deviation electric quantity.
2. A method according to claim 1, wherein the step of obtaining a trading plan power of the hydroelectric generating set for a predetermined period of time, and determining a power generation plan of the hydroelectric generating set according to the trading plan power and a first constraint condition comprises:
determining the transaction plan electric quantity of the hydroelectric generating set in a preset time period according to the total transaction electric quantity and the electric quantity decomposition mode of the hydroelectric generating set;
and calculating a power generation plan of the hydroelectric generating set through a clearing model according to the electric quantity of the trading plan and the first constraint condition.
3. A method of scheduling of execution deviations in a hydroelectric transaction according to claim 2 in which the first constraints comprise reservoir capacity constraints, head constraints, upstream and downstream coupling constraints.
4. A method according to claim 1, wherein the step of determining a scheduled plan power amount of the hydroelectric generating set for a predetermined period of time according to the power generation plan, and scheduling the backup power generating set to generate power simultaneously with the hydroelectric generating set according to the scheduled plan power amount and the trade plan power amount comprises:
determining the scheduling plan electric quantity of the hydroelectric generating set in a preset time period according to the power generation plan;
if the scheduling plan electric quantity is determined to be smaller than the transaction plan electric quantity, scheduling the standby generator set and the hydroelectric generating set to generate power simultaneously in the preset time period;
the standby generator set comprises a wind generating set, a solar generating set and a thermal generating set.
5. A method according to claim 1, wherein the step of determining the actual scheduled electric quantity of the hydroelectric generating set for a predetermined period of time and obtaining the deviation electric quantity of the hydroelectric generating set for the predetermined period of time from the actual scheduled electric quantity and the trading plan electric quantity comprises:
acquiring and recording the actual scheduling electric quantity of the hydroelectric generating set in a preset time period in real time;
and calculating the difference between the transaction plan electric quantity and the actual scheduling electric quantity to obtain the deviation electric quantity of the hydroelectric generating set in the preset time period.
6. The method for performing biased scheduling of hydropower trading according to claim 1, wherein the step of acquiring the reference power rate of the power trading market for a predetermined period of time, and settling the biased cost of performing the hydropower trading for the predetermined period of time according to the reference power rate and the biased power amount comprises:
acquiring node electricity prices of all power transmission channels in the power trading market, and respectively calculating the mean value of the node electricity prices of all the power transmission channels in a preset time period to obtain a reference electricity price of the preset time period;
and calculating to obtain the hydropower transaction execution deviation fee in a preset time period according to the reference electricity price and the deviation electricity quantity.
7. A method of performing deviation scheduling in a hydroelectric transaction according to claim 1 further comprising the steps of:
and according to the output condition of the standby generator set within a preset time period, allocating the hydropower transaction execution deviation cost and compensating the hydropower transaction execution deviation cost to the standby generator set.
8. A system for scheduling execution deviations of a hydroelectric transaction, comprising:
the acquisition module is used for acquiring the trading plan electric quantity of the hydroelectric generating set in a preset time period and determining the generating plan of the hydroelectric generating set according to the trading plan electric quantity and a first constraint condition;
the unit scheduling module is used for determining scheduling plan electric quantity of the hydroelectric generating set in a preset time period according to the power generation plan and scheduling the standby generating set and the hydroelectric generating set to generate power simultaneously according to the scheduling plan electric quantity and the trading plan electric quantity;
the deviation electric quantity calculation module is used for determining the actual scheduling electric quantity of the hydroelectric generating set in the preset time period and obtaining the deviation electric quantity of the hydroelectric generating set in the preset time period according to the actual scheduling electric quantity and the transaction plan electric quantity;
and the deviation charge settlement module is used for acquiring the reference electricity price of the electricity trading market in a preset time period and settling the deviation charge of the hydropower trading execution in the preset time period according to the reference electricity price and the deviation electric quantity.
9. A hydroelectric transaction execution deviation scheduling apparatus comprising:
at least one processor;
at least one memory for storing at least one program;
when executed by the at least one processor, cause the at least one processor to implement a method of hydroelectric transaction execution deviation scheduling as claimed in any one of claims 1 to 7.
10. A computer readable storage medium having stored therein processor executable instructions, wherein the processor executable instructions when executed by a processor are for performing a method of hydropower transaction execution deviation scheduling as claimed in any one of claims 1-7.
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