CN111724254B - Peak regulation auxiliary service and electric energy combined clearing method, system, device and medium - Google Patents
Peak regulation auxiliary service and electric energy combined clearing method, system, device and medium Download PDFInfo
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Abstract
The invention discloses a method, a system, a device and a medium for jointly discharging peak shaving auxiliary service and electric energy. According to the method, basic data of an electric power system and quotation information submitted by a unit in the future are obtained, clear objective functions are determined according to the electric energy quotation information and the peak shaving quotation information through peak shaving auxiliary service and electric energy cost, a safety constraint unit combination model of the electric power system is established based on the basic data, finally, the objective functions are minimized as constraints, and the future electric market is cleared according to the safety constraint unit combination model; according to the method and the device for clearing the peak shaving auxiliary service, the electric energy of the unit and the clearing process of the peak shaving auxiliary service in the spot environment can be unified well, the peak shaving auxiliary service and the electric energy of the unit can be cleared simultaneously, a final power generation plan of the unit can be obtained at one time, and clearing efficiency is improved. The invention can be widely applied to the technical field of electric power.
Description
Technical Field
The invention relates to the technical field of electric power, in particular to a method, a system, a device and a medium for jointly discharging peak shaving auxiliary service and electric energy.
Background
With the rapid development of social economy in China, the electricity consumption is continuously increased, the electricity consumption structure is continuously changed, the peak-valley difference of the power grid is continuously increased, and the contradiction between the load peak-valley difference and the peak regulation capability is increasingly prominent. The problem of peak regulation of the power grid is solved, the power grid has very important functions of ensuring the safe, high-quality and economic operation of the power grid and reasonably utilizing energy resources, and how to perform peak regulation work becomes a long and difficult task for a dispatching department. In the aspect of peak regulation, the peak regulation can be classified according to time, and the peak regulation is classified into flood period peak regulation and withered period peak regulation. In the water-rich period, the hydropower plant basically keeps full-grown, and the peak regulation margin is small. The minimum steady burning load is arranged in the thermal power off-peak period, the supervision of the minimum technical output of each unit is enhanced, and the start-up, the stop and the peak regulation of the conditional thermal power plant units can be arranged. Hydropower is the unit priority peak regulation of reservoirs with annual regulation capacity. And in the withering period, the base load of the full firing zone of the thermal power is arranged as much as possible, the peak is not regulated as much as possible, and the full firing and the multiple firing of the thermal power plant occur. Except for the part of power plants with limitation on the safety of the power grid, all other power plants fully utilize the regulating capability of the reservoir of the hydropower plant to perform full stop or operate in a minimum mode.
Meanwhile, the development of the electric power spot market in China is gradually mature, and unified construction of the peak shaving auxiliary service market and the spot electric energy market is imperative. The existing clearing mechanism of the electric power spot market is based on declaration information of market members and operation boundary conditions of a power grid, and adopts a safety restraint unit combination (SCUC) and a safety restraint economic dispatch (SCED) program to conduct optimization calculation, so that market transaction results are obtained. In short, on the premise of ensuring the safety of the power grid, the unit with the cheapest price in the system is preferentially called until the load requirement is met. However, in the practical implementation stage, the following problems are often encountered: the coupling relation exists between the clearing constraint conditions of the peak shaving auxiliary service and the clearing constraint conditions of the power spot market, and the conflict can occur when the power generation plan is executed according to the clearing results of the peak shaving auxiliary service and the power spot market, and the stable operation of the whole power system can be seriously influenced. In the prior art, some schemes adopt a hierarchical clearing method, firstly clearing a peak shaving auxiliary service market, and then clearing an electric energy market based on a peak shaving auxiliary service clearing result, so that a comprehensive peak shaving auxiliary service market and a unit startup combination and output clearing result of spot electric energy are obtained. However, in practical application of the method, the time for performing twice market clearing is too long, and the clearing speed is too slow, so that the normal operation of each generator set is affected. In summary, the current peak shaving auxiliary service and the current electric energy spot market have too slow clearing speed and low efficiency, and need to be improved.
Noun interpretation:
electric energy market: markets with electrical energy as the transaction target;
peak shaving market: market with peak shaving auxiliary service as trade target;
electric power spot market: the electric power transaction activities are collectively developed by the transaction mechanism in the next day and in a shorter time from the day to the time before the real-time dispatching;
market in the daytime: the operation date is advanced by one day to determine the combination state of the operation date machine set and the electric energy transaction market of the power generation plan;
real-time market: determination made on the operating day will last 5-15 minutes into the future to schedule the resource allocation status and the planned power trading market.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art to a certain extent.
Therefore, an object of the embodiments of the present application is to provide a method for jointly discharging peak shaving auxiliary service and electric energy, which can simultaneously discharge peak shaving auxiliary service and electric energy of a unit in a combined manner, and a final power generation plan of the unit is obtained at one time, so that discharging efficiency is greatly improved.
It is another object of embodiments of the present application to provide a peak shaving aid and electrical energy combined clearing system.
In order to achieve the technical purpose, the technical scheme adopted by the embodiment of the application comprises the following steps:
in a first aspect, an embodiment of the present application provides a method for jointly discharging peak shaving auxiliary service and electric energy, including the following steps:
acquiring basic data of a power system and quotation information submitted by a unit in the future; the unit comprises a thermal power unit and/or a nuclear power unit which participate in peak regulation auxiliary service; the quotation information comprises electric energy quotation information and peak shaving quotation information;
determining a clear objective function according to the electric energy quotation information and the peak shaving quotation information through peak shaving auxiliary service and the electric energy cost;
based on the basic data, establishing a safety constraint unit combination model of the power system;
and taking the minimum objective function as constraint, and clearing the electric power market in the future according to the safety constraint unit combination model to obtain a clearing result of the starting combination of the unit and the unit output.
In addition, the peak shaving auxiliary service and electric energy combined clearing method according to the above embodiment of the present invention may further have the following additional technical features:
further, in one embodiment of the present invention, the base data includes system data, crew data, tie line plan data, load data, and sensitivity data of the power system.
Further, in one embodiment of the present invention, the constraint conditions in the safety constraint unit combination model include an active power balance constraint of the electric power system, an output limit constraint of the unit, a climbing constraint of the unit, and a grid safety constraint.
Further, in an embodiment of the present invention, the objective function further includes a start-stop cost of the unit.
Further, in one embodiment of the present invention, the step of determining the clear objective function by peak shaving auxiliary service and cost of electric energy specifically includes:
determining a first cost of the electric energy according to the electric energy quotation information and the winning bid force of the unit;
determining the peak shaving capacity of the unit according to the paid peak shaving reference value and the marked output of the unit;
determining a second cost of the peak shaving auxiliary service according to the peak shaving capacity of the unit and the peak shaving quotation information;
and obtaining the objective function according to the sum of the first cost and the second cost.
Further, in one embodiment of the present invention, the method further comprises the steps of:
determining a third cost of the peak shaving auxiliary service according to the peak shaving capacity of the unit, the peak shaving quotation information and a preset clean energy discarding punishment factor;
and obtaining the objective function according to the sum of the first cost and the third cost.
Further, in one embodiment of the present invention, the method further comprises the steps of: and determining a clear objective function through the cost of peak shaving auxiliary service, the cost of electric energy and the start-stop cost of the unit.
In a second aspect, an embodiment of the present application provides a peak shaving auxiliary service and electric energy combined clearing system, including:
the acquisition module is used for acquiring basic data of the power system and quotation information submitted by the unit in the future; the unit comprises a thermal power unit and/or a nuclear power unit which participate in peak regulation auxiliary service; the quotation information comprises electric energy quotation information and peak shaving quotation information;
the first processing module is used for determining clear objective functions through peak shaving auxiliary service and electric energy cost according to the electric energy quotation information and the peak shaving quotation information;
the second processing module is used for establishing a safety constraint unit combination model of the power system based on the basic data;
and the clearing module is used for clearing the power market in the future according to the safety constraint unit combination model by taking the minimum objective function as constraint to obtain a clearing result of the start-up combination of the unit and the unit output.
In a third aspect, an embodiment of the present application provides a peak shaving auxiliary service and electric energy combined clearing 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 peak shaver auxiliary service and electrical energy joint clearing method.
In a fourth aspect, embodiments of the present application further provide a medium having stored therein processor-executable instructions that, when executed by a processor, are configured to implement the peak shaver auxiliary service and electric energy joint clearing method.
The advantages and benefits of the 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 method, basic data of the electric power system and quotation information submitted by a machine set before the day are obtained, clear objective functions are determined according to the electric energy quotation information and the peak shaving quotation information through peak shaving auxiliary service and electric energy cost, a safety constraint machine set combination model of the electric power system is built based on the basic data, finally the objective functions are minimized to be constraint, and the electric power market before the day is cleared according to the safety constraint machine set combination model; according to the method and the device for clearing the peak shaving auxiliary service, the electric energy of the unit and the clearing process of the peak shaving auxiliary service in the spot environment can be unified well, the peak shaving auxiliary service and the electric energy of the unit can be cleared simultaneously, a final power generation plan of the unit can be obtained at one time, and clearing efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following description is made with reference to the accompanying drawings of the embodiments of the present application or the related technical solutions in the prior art, it should be understood that, in the following description, the drawings are only for convenience and clarity to describe some embodiments in the technical solutions of the present application, and other drawings may be obtained according to these drawings without any inventive effort for those skilled in the art.
FIG. 1 is a schematic flow chart of an embodiment of a method for combined peak shaving assistance and electrical energy scavenging according to the present invention;
FIG. 2 is a schematic diagram of an embodiment of a peak shaving assistance system and electric energy combined clearing system according to the present invention;
fig. 3 is a schematic structural diagram of an embodiment of a peak shaving auxiliary service and electric energy combined clearing device according to the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention. The step numbers in the following embodiments are set for convenience of illustration only, and the order between the steps is not limited in any way, and the execution order of the steps in the embodiments may be adaptively adjusted according to the understanding of those skilled in the art.
The method and system for peak shaving auxiliary service and electric energy combined clearing according to the embodiment of the application are described in detail below with reference to the accompanying drawings, and the method for peak shaving auxiliary service and electric energy combined clearing according to the embodiment of the application will be described first with reference to the accompanying drawings. The clearing method in the embodiment of the application can be implemented in the day-ahead stage of the spot market or in the real-time stage of the spot market. The method of delivery provided by the present application will now be described with the primary examples being implemented during the pre-day phase of the spot market.
Referring to fig. 1, the method for jointly discharging peak shaving auxiliary service and electric energy in the embodiment of the application mainly includes the following steps:
s1: acquiring basic data of a power system and quotation information submitted by a unit in the future; the unit comprises a thermal power unit and/or a nuclear power unit which participate in peak regulation auxiliary service; the quotation information comprises electric energy quotation information and peak shaving quotation information;
s2: determining clear objective functions according to the electric energy quotation information and the peak shaving quotation information through peak shaving auxiliary service and the electric energy cost;
s3: based on the basic data, establishing a safety constraint unit combination model of the power system;
s4: and (3) taking the objective function as constraint, and clearing the electric power market in the future according to the safety constraint unit combination model to obtain a starting combination of the unit and a clearing result of the unit output.
According to the embodiment of the application, in the daily-life spot electric energy market clearing process, the condition of peak shaving auxiliary service markets is considered, the clearing task of the unit is completed at one time according to the operation boundary of the electric power system and quotation data of all levels of market participants, and the starting combination of the unit and the clearing result of the output of each unit can be directly obtained. On one hand, the method provided by the embodiment of the application well links the electric energy market and the peak shaving auxiliary service market, and the coupling relation existing between related decision variables is unified according to the constraint condition formed by the power generation plan and the peak shaving plan, so that the actual unit output result is more accurate and feasible, and the conflict between the unit electric energy clearing result and the peak shaving auxiliary service clearing result is effectively avoided. On the other hand, the clearing result finally comprising the starting combination of all units and the unit output can be obtained by directly using a group of objective functions and a safety constraint unit combination model, compared with a hierarchical clearing mode, for example, a mode of firstly executing peak regulation auxiliary service output of the units and then determining the electric energy output of the units based on the auxiliary peak regulation output result is adopted, the clearing speed can be greatly increased, the clearing efficiency is improved, more adjustment time can be reserved for each unit, and the operation of a power grid is more convenient and safer.
In step S1 of the present application, first, basic data of the power system is acquired, specifically, the basic data includes, but is not limited to, the following: system data, unit data, tie line plan data, load data and sensitivity data of the power system, wherein the system data mainly comprises time period information, system load and system standby requirements; the unit data mainly comprises unit basic information, unit calculation parameters, unit starting quotation, unit energy quotation, unit initial state, unit power constraint and unit climbing rate; the tie line plan data mainly comprises tie line basic information and tie line plan power; the load data mainly comprises bus load prediction; the sensitivity data mainly comprises power generation transfer distribution factors of a unit and load injection power to a line and section tide.
Based on the above basic data of the power system, a set of constraints for a safety restraint unit combination model (SCUC) of the power system may be established. Specifically, the process of establishing the constraint condition of the safety constraint unit combination model is as follows:
alternatively, the set of constraints may include primarily systematic constraints associated with the crew, individual crew constraints, network security constraints, and other constraints. Wherein the systematic constraints include: a system load balancing constraint for ensuring power balance of the system; the positive and negative standby capacity constraint and the rotation standby constraint of the system, the standby capacity is used for preventing unbalanced fluctuation of supply and demand of the system caused by prediction deviation of system load and various actual operation accidents, and generally, the whole system needs to be reserved with certain capacity standby, namely, the total starting-up capacity of each day needs to be ensured to meet the minimum standby capacity of the system. The single unit constraint includes: the upper and lower limit constraint of the output of the unit indicates that the output of the unit is in the range of the maximum/minimum technical output; the climbing constraint of the unit, namely the climbing rate requirement which is required to be met when the unit climbs up or down; the minimum continuous start-stop time constraint and the maximum start-stop times constraint of the unit are required to be met by the unit due to the physical properties and actual operation requirements of the unit. The network security constraints include line flow constraints and section flow constraints. The above constraint related formulas and calculations can be performed according to current standards. In addition, it should be understood that each constraint condition in the embodiment of the present application is only an optional implementation manner, and in addition to the constraint conditions, conditions of energy constraint, emission constraint and the like may be considered according to practical situations; moreover, the constraint conditions can be deleted according to actual conditions so as to be suitable for different actual requirements.
In an embodiment of the present application, the security constraint unit combination model may include the following constraints: the active power balance constraint of the system, namely the sum of the output of the clean energy unit and the output of the conventional unit (the thermal power unit and the nuclear power unit) is equal to the load of the system plus the power of an outgoing connecting line of the system. The output limit constraint of the conventional unit, that is, the output of the conventional unit does not exceed the preset maximum output upper limit and is not lower than the preset minimum output lower limit. Climbing constraint of a unit, minimum time period start-stop constraint for a thermal power unit, power grid safety constraint and positive standby constraint of a system.
Based on the SCUC constraint condition set, the safety constraint unit combination model can be solved by adding the constraint objective function, so that the final unit starting combination and unit output result are obtained.
Specifically, in the embodiment of the present application, the process of determining the clear objective function mainly includes the following steps:
determining a first cost of the electric energy according to the electric energy quotation information and the winning bid force of the unit;
the peak regulation capacity of the unit is determined through the paid peak regulation reference value and the marked output of the unit;
determining a second cost of peak shaving auxiliary service according to peak shaving capacity and peak shaving quotation information of the unit;
an objective function is derived based on the sum of the first cost and the second cost.
Alternatively, the objective function may be obtained by:
determining a third cost of peak shaving auxiliary service according to peak shaving capacity, peak shaving quotation information and a preset clean energy discarding penalty factor of the unit;
an objective function is derived based on the sum of the first cost and the third cost.
Alternatively, the clear objective function can also be determined by the cost of peak shaving auxiliary service, the cost of electric energy and the start-stop cost of the unit.
In the embodiment of the present application, in the peak shaving auxiliary service market, the peak shaving capacity is marked in the unit, and the peak shaving capacity of the conventional unit has a certain relationship with the output thereof, that is, the peak shaving capacity=the unit paid peak shaving reference value-the output size of the unit, when the output of the unit is higher than the paid peak shaving reference value, the peak shaving capacity is 0, and when the power generation of the unit is lower than the paid peak shaving reference value, a part of power distribution capacity is reserved, so that the power capable of participating in the mark in the spot market is generated for other clean energy, and the part of power is the power energy participating in the peak shaving auxiliary service. Thus, in the embodiment of the present application, the formula of the objective function may be expressed as:
wherein j represents the number of a conventional unit (a thermal power unit and/or a nuclear power unit), t represents the scheduled time period number, generally 15 minutes, one time period and 96 time periods in one day; m is the price segment of the electric energy quotation of the conventional unit, and the same price is a segment;the mth section quotation data of the jth conventional unit in the jth section of the electric energy market is expressed in units of yuan/MW,the bid-winning force of the jth conventional unit under the mth section quotation data of the jth period is represented, and the unit is MW; n is the price segment of the peak shaving capacity quotation of the conventional unit, and the same price is a segment; m is clean energy discarding punishment factor and is a constant; />The nth section quotation data of the jth conventional unit in the t period of the peak shaving auxiliary service market is expressed in the unit of element/MW;/>the method comprises the steps of representing the winning peak capacity of a jth conventional unit under the nth section quotation data of a jth period, wherein the unit is MW; />And the start-stop cost of the jth conventional unit in the t period is represented by the unit.
In the embodiment of the application, aiming at the relation between the peak shaving auxiliary service market and the clean energy unit as well as the conventional unit, a method for determining a clear objective function through the cost of the peak shaving auxiliary service and the cost of the electric energy is provided, and because the peak shaving market represents that the electric quantity of the electric power system is unbalanced, the peak shaving demand indicates that the clean energy is subjected to power abandoning, the cost of the electric power system is increased, and the actual demand for preferentially consuming the clean energy is not met. Therefore, in the embodiment of the application, the peak shaving capacity cost of the conventional unit is adjusted by adopting the clean energy discarding penalty factor, and the hidden discarding cost is considered, so that the peak shaving capacity of the conventional unit is practically equal to the newly added capacity of the consumed clean energy, and more economic benefits can be brought. Specifically, the value of M may be set according to actual needs. The start-stop expense comprises the start-up expense and the stop expense of the unit, and the part can be selected and considered according to specific practical conditions, for example, the stop expense is generally smaller and can be 0 for simplicity. Because continuous time periods are often involved in the working process of the unit, the method in the embodiment of the application is generally implemented by taking the time period as a reference, and the embodiment of the application takes every 15 minutes as a time period, and of course, the length of the time period can be flexibly set according to actual requirements.
Similar to the safety constraint unit combination model, the constraint related formulas and calculation modes of the safety constraint economic dispatch model can be executed according to the current standard. Based on the combination result of the unit, the unit output data and node marginal electricity price data of the unit participating in the t time period in the electric energy market can be obtained by calling a mature optimization algorithm software package (such as CPLEX) to perform optimization calculation through the constraint target and constraint condition of the safety constraint economic dispatch model of the t time period. Substituting the related data of each period to obtain the unit output data and the node marginal electricity price data of the whole period. And determining a generating plan of the unit in the future according to the winning result of the unit participating in the peak shaving market and the clearing result of the SCED in the electric energy market.
In addition, the embodiment of the application can be executed in a real-time stage of daily operation, specifically, the unit combination information of the real-time stage of daily operation is obtained, then whether peak shaving requirements exist in the real-time stage is judged according to the boundary conditions of rolling operation of the power system, if the peak shaving requirements do not exist in the real-time stage, a real-time SCED program is executed to clear, and a real-time unit power generation plan is determined. Namely, the electric energy market clearing mode is adopted for clearing.
Next, a peak shaving auxiliary service and electric energy combined clearing system according to an embodiment of the present application will be described with reference to the accompanying drawings.
Fig. 2 is a schematic diagram of a peak shaving auxiliary service and electric energy combined clearing system according to an embodiment of the present invention.
The system specifically comprises:
the acquisition module 101 is used for acquiring basic data of the power system and quotation information submitted by a unit in the future; the unit comprises a thermal power unit and/or a nuclear power unit which participate in peak regulation auxiliary service; the quotation information comprises electric energy quotation information and peak shaving quotation information;
the first processing module 102 is configured to determine a clear objective function according to the electric energy quotation information and the peak shaving quotation information through the peak shaving auxiliary service and the electric energy cost;
the second processing module 103 is used for establishing a safety constraint unit combination model of the power system based on the basic data;
and the clearing module 104 is used for clearing the electric power market in the future according to the safety constraint unit combination model by taking the objective function as constraint to obtain the clearing results of the start-up combination of the unit and the unit output.
It can be seen that the content in the above method embodiment is applicable to the system embodiment, and the functions specifically implemented by the system embodiment are the same as those of the method embodiment, and the beneficial effects achieved by the method embodiment are the same as those achieved by the method embodiment.
Referring to fig. 3, an embodiment of the present application provides a peak shaving auxiliary service and electric energy combined clearing device, including:
at least one processor 201;
at least one memory 202 for storing at least one program;
the at least one program, when executed by the at least one processor 201, causes the peak shaver assistance service implemented by the at least one processor 201 to combine with the electrical energy to yield a method.
Similarly, the content in the above method embodiment is applicable to the embodiment of the present device, and the functions specifically implemented by the embodiment of the present device are the same as those of the embodiment of the above method, and the beneficial effects achieved by the embodiment of the above method are the same as those achieved by the embodiment of the above method.
The present embodiments also provide a storage medium having stored therein instructions executable by the processor 201, the instructions executable by the processor 201 for performing a peak shaving assist service and electrical energy joint clearing method when executed by the processor 201.
Similarly, the content in the above method embodiment is applicable to the present storage medium embodiment, and the specific functions of the present storage medium embodiment are the same as those of the above method embodiment, and the achieved beneficial effects are the same as those of the above method embodiment.
In some 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 flowcharts 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 a larger operation are performed independently.
Furthermore, while the invention is described in the context of functional modules, it should be appreciated that, unless otherwise indicated, one or more of the functions and/or features may be integrated in a single physical device and/or software module or may be implemented in separate physical devices or software modules. It will also be appreciated that a detailed discussion of the actual implementation of each module is not necessary to an understanding of the present invention. Rather, the actual implementation of the various functional modules in the apparatus disclosed herein will be apparent to those skilled in the art from consideration of their attributes, functions and internal relationships. Accordingly, one of ordinary skill in the art can implement 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 and are not intended to be limiting upon the scope of the invention, which is to be defined in the appended claims and their full scope of equivalents.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method of 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, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing 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). Additionally, the computer-readable medium may even be paper or other suitable medium upon which the program is printed, as the program may 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 is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
In the foregoing description of the present specification, reference has been made to the terms "one embodiment/example", "another embodiment/example", "certain embodiments/examples", and 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, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the embodiments described above, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the present invention, and these equivalent modifications and substitutions are intended to be included in the scope of the present invention as defined in the appended claims.
Claims (9)
1. The peak shaving auxiliary service and electric energy combined clearing method is characterized by comprising the following steps of:
acquiring basic data of a power system and quotation information submitted by a unit in the future; the unit comprises a thermal power unit and/or a nuclear power unit which participate in peak regulation auxiliary service; the quotation information comprises electric energy quotation information and peak shaving quotation information;
determining a clear objective function according to the electric energy quotation information and the peak shaving quotation information through peak shaving auxiliary service and the electric energy cost;
based on the basic data, establishing a safety constraint unit combination model of the power system;
taking the minimum objective function as constraint, and clearing the electric power market in the future according to the safety constraint unit combination model to obtain a clearing result of the starting combination of the unit and the unit output;
the step of determining a clear objective function by peak shaving auxiliary service and cost of electric energy specifically comprises the following steps:
determining a first cost of the electric energy according to the electric energy quotation information and the winning bid force of the unit;
determining the peak shaving capacity of the unit according to the paid peak shaving reference value and the marked output of the unit;
determining a second cost of the peak shaving auxiliary service according to the peak shaving capacity of the unit and the peak shaving quotation information;
and obtaining the objective function according to the sum of the first cost and the second cost.
2. The peak shaver auxiliary service and electric energy joint clearing method according to claim 1, wherein the basic data comprises system data, unit data, tie-line plan data, load data and sensitivity data of an electric power system.
3. The peak shaver auxiliary service and electric energy joint clearing method according to claim 1, wherein the constraint conditions in the safety constraint unit combination model comprise active power balance constraint of the electric power system, output limit constraint of the unit, climbing constraint of the unit and grid safety constraint.
4. The peak shaver auxiliary service and electric energy combined clearing method according to claim 1, wherein the peak shaver auxiliary service and electric energy combined clearing method is characterized in that: the objective function also includes the start-stop cost of the unit.
5. The peak shaver auxiliary service and electric energy combined discharging method according to claim 1, wherein the method further comprises the steps of:
determining a third cost of the peak shaving auxiliary service according to the peak shaving capacity of the unit, the peak shaving quotation information and a preset clean energy discarding punishment factor;
and obtaining the objective function according to the sum of the first cost and the third cost.
6. The peak shaver assistance service and electric energy joint clearing method according to any one of claims 1 to 5, further comprising the steps of: and determining a clear objective function through the cost of peak shaving auxiliary service, the cost of electric energy and the start-stop cost of the unit.
7. A peak shaving auxiliary service and electric energy combined clearing system, comprising:
the acquisition module is used for acquiring basic data of the power system and quotation information submitted by the unit in the future; the unit comprises a thermal power unit and/or a nuclear power unit which participate in peak regulation auxiliary service; the quotation information comprises electric energy quotation information and peak shaving quotation information;
the first processing module is used for determining clear objective functions through peak shaving auxiliary service and electric energy cost according to the electric energy quotation information and the peak shaving quotation information;
the second processing module is used for establishing a safety constraint unit combination model of the power system based on the basic data;
the clearing module is used for clearing the power market in the future according to the safety constraint unit combination model by taking the minimum objective function as constraint to obtain a clearing result of the start-up combination of the unit and the unit output;
the first processing module is specifically configured to:
determining a first cost of the electric energy according to the electric energy quotation information and the winning bid force of the unit;
determining the peak shaving capacity of the unit according to the paid peak shaving reference value and the marked output of the unit;
determining a second cost of the peak shaving auxiliary service according to the peak shaving capacity of the unit and the peak shaving quotation information;
and obtaining the objective function according to the sum of the first cost and the second cost.
8. Peak shaving auxiliary service and electric energy joint clearing device, which is characterized by comprising:
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 peak shaver auxiliary service and electric energy joint clearing method as set forth in any one of claims 1-6.
9. A computer readable storage medium having stored therein instructions executable by a processor, characterized by: the processor-executable instructions, when executed by a processor, for implementing the peak shaver assistance service and electric energy joint clearing method of any one of claims 1-6.
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| CN112398176B (en) * | 2020-11-05 | 2022-07-05 | 贵州电网有限责任公司 | Day-ahead optimized scheduling method of water-fire-wind mutual aid system considering start-stop peak regulation of coal-fired unit |
| CN112348274B (en) * | 2020-11-17 | 2023-11-24 | 国家电网有限公司 | Electric power spot market clearing method, system, equipment and medium considering peak shaving |
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