CN111049196A - Method, system, device and medium for clearing peak shaving auxiliary service in spot goods environment - Google Patents
Method, system, device and medium for clearing peak shaving auxiliary service in spot goods environment Download PDFInfo
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- CN111049196A CN111049196A CN202010012306.4A CN202010012306A CN111049196A CN 111049196 A CN111049196 A CN 111049196A CN 202010012306 A CN202010012306 A CN 202010012306A CN 111049196 A CN111049196 A CN 111049196A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
Abstract
The invention discloses a clearing method, a system, a device and a storage medium for peak shaving auxiliary service in a spot cargo environment. The method comprises the steps of establishing a safety constraint unit combination model of the power system to obtain a day-ahead unit combination result by acquiring basic data of the power system and quotation information submitted by a unit day ahead; clearing the peak shaving auxiliary service of the unit based on the unit combination result and the quotation information to obtain a first clearing result; and further establishing a safety constraint economic dispatching model and determining a day-ahead unit power generation plan. The system comprises an acquisition module, a first processing module, a clearing module and a second processing module. By using the method of the invention, the output efficiency can be improved, and the output distribution of the unit is ensured not to conflict, so that the unit can participate in the electric energy market and the peak shaving market in the spot environment at the same time, and the output utilization rate of the unit is improved to a certain extent. The invention can be widely applied to the technical field of electric power energy scheduling.
Description
Technical Field
The invention relates to the technical field of electric power energy scheduling, in particular to a clearing method, a clearing system, a clearing device and a clearing medium for peak shaving auxiliary service in a spot cargo environment.
Background
With the rapid development of social economy in China, the power consumption is continuously increased, the power consumption structure is continuously changed, the peak-valley difference of a 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 power grid peak regulation is solved, the method plays an important role in ensuring the safe, high-quality and economic operation of the power grid and reasonably utilizing energy resources, and how to do peak regulation work becomes a long-term and arduous task for a dispatching department.
Meanwhile, the development of the electric power spot market in China is gradually matured, and the clearing mechanism of the electric power spot market at present adopts Safety Constraint Unit Combination (SCUC) and Safety Constraint Economic Dispatch (SCED) programs to carry out optimization calculation based on declaration information of market members and power grid operation boundary conditions, and the market trading result is obtained after clearing. In short, on the premise of ensuring the safety of the power grid, the unit with the cheapest price report in the system is called preferentially until the load requirement is met. However, in the actual implementation stage, the following problems are often encountered: a coupling relation exists between the clearing of the peak shaving auxiliary service and the clearing constraint conditions of the electric power spot market, and a conflict may occur when a power generation plan is executed according to the clearing results of the peak shaving auxiliary service and the electric power spot market alone, and the stable operation of the whole electric power system may be seriously influenced; the peak shaving auxiliary service is not clear enough in real time, and may not meet the peak shaving requirements in the day and in real time. In summary, the peak shaving auxiliary service and the construction of the electric power spot market are still in the initial state at the present stage, and an effective connection mode and mechanism are also lacked between the peak shaving auxiliary service and the electric power spot market.
The noun explains:
electric energy market: a market in which electric energy is used as a trade target;
peak shaving market: a market with peak shaving assistance service as a trading target;
electric power spot market: the general term of electric power trading activities before the next day, the day and the real-time scheduling is intensively developed by a trading mechanism in the day and in a shorter time;
market day ahead: the electric energy trading market is used for determining the combination state of the unit and the power generation plan on the operation day in advance by one day;
real-time marketing: the decision made on the operating day is finally used for scheduling the resource allocation state and the planned electric energy trading market 5-15 minutes in the future of the operating day.
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 the embodiments of the present invention is to provide a clearing method for peak shaving auxiliary service in spot goods environment, which can coordinate the electric energy output of the unit and the peak shaving auxiliary service output in the clearing of the electric power spot goods market, thereby ensuring the stable operation of the electric power system; the final power generation plan of the unit can be obtained at one time, and the clearing efficiency is improved.
It is another object of embodiments of the present invention to provide a closeout system that provides peak shaving assistance services in an off-the-shelf environment.
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 method for clearing peak shaving auxiliary services in a spot shipment environment, including the following steps:
acquiring basic data of an electric power system and quotation information submitted by a unit day ahead; the quotation information comprises electric energy quotation information and peak shaving quotation information;
establishing a safety constraint unit combination model of the electric power system based on the basic data and the electric energy quotation information;
obtaining a unit combination result in the day ahead according to the safety constraint unit combination model;
clearing the peak shaving auxiliary service of the unit based on the unit combination result and the peak shaving quotation information to obtain a first clearing result;
and establishing a safety constraint economic dispatching model based on the basic data, the electric energy quotation information and the first clearing result, and determining a day-ahead unit power generation plan.
The clearing method of the peak shaving auxiliary service in the spot cargo environment comprises the steps of firstly obtaining basic data of an electric power system and quotation information submitted by a unit in the day ahead, organizing the clearing of the SCUC in the spot cargo market in the day ahead, determining a starting combination, clearing the peak shaving auxiliary service of the unit according to the starting combination to obtain the output bid-winning result of the unit participating in the peak shaving market, and clearing the SCED in the electric energy spot cargo market in the day ahead with the output of the unit not winning the bid in the peak shaving market, so that the day-ahead power generation planning is completed. The embodiment of the invention well links the clearing process of the unit electric energy and the peak shaving auxiliary service in the spot goods environment, can obtain the final power generation plan of the unit at one time, and improves the clearing efficiency; and the output distribution of the unit is ensured not to conflict, so that the unit can participate in the electric energy market and the peak shaving market in the spot environment at the same time, and the output utilization rate of the unit is improved to a certain extent.
In addition, the clearing method for peak shaving auxiliary service in spot-shipment environment according to the above embodiment of the present invention may further have the following additional technical features:
further, in one embodiment of the invention, the base data includes system data, crew data, tie line plan data, load data, and sensitivity data of the power system.
Further, in an embodiment of the present invention, the clearing the peak shaving auxiliary service of the unit based on the unit combination result and the peak shaving quotation information to obtain the first clearing result specifically includes:
constructing supply and demand balance constraint of the peak shaving auxiliary service according to a preset peak shaving demand;
forming a constraint condition set of the peak regulation auxiliary service according to the supply and demand balance constraint, the power balance constraint and the power grid safety constraint of the power system and the operation characteristic constraint of the unit;
acquiring the total peak regulation cost of the peak regulation auxiliary service according to the peak regulation quotation information;
and clearing the constraint condition set based on the peak regulation auxiliary service by using the minimization of the total peak regulation cost as a constraint target to obtain the peak regulation winning power of each unit.
In the embodiment of the invention, the peak regulation market before the day is cleared based on the preset peak regulation demand amount in the next day. The peak shaving output data of each unit meeting the peak shaving requirement of the power system can be obtained, the total peak shaving cost can be minimized, and the utilization rate of power resources is improved.
Further, in an embodiment of the present invention, the step of establishing a safety-constrained economic dispatch model based on the basic data, the electric energy pricing information, and the first clearing result specifically includes:
readjusting the upper and lower limit constraints of the output of each unit according to the peak shaving winning power of each unit in the first clearing result;
and establishing a safety constraint economic dispatching model based on the upper and lower limit constraints of the output of the readjusted unit.
Further, in an embodiment of the present invention, the readjusting the upper and lower output limit constraints of each unit according to the peak shaving winning power of each unit in the first output result specifically includes:
acquiring the upper limit value of the output of each unit;
and determining the result obtained by subtracting the peak shaving winning output of the unit from the output upper limit value of each unit, and taking the result as the new output upper limit value of the corresponding unit.
Further, in an embodiment of the present invention, the method further comprises the following steps:
judging whether a peak regulation requirement exists in a real-time stage;
and if the peak regulation requirement does not exist in the real-time stage, executing a real-time safety constraint economic dispatching program to clear, and determining a real-time unit power generation plan.
Further, in an embodiment of the present invention, the method further comprises the following steps:
if the peak regulation requirement exists in the real-time stage, the real-time peak regulation auxiliary service market clearing is organized firstly, then the real-time safety constraint economic dispatch program clearing is executed according to the real-time peak regulation auxiliary service market clearing result, and the real-time unit power generation plan is determined.
In a second aspect, an embodiment of the present invention provides a clearing system for peak shaving auxiliary service in a spot shipment environment, 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 quotation information comprises electric energy quotation information and peak shaving quotation information;
the first processing module is used for establishing a safety constraint unit combination model of the power system based on the basic data and the electric energy quotation information, and obtaining a unit combination result in the day before according to the safety constraint unit combination model;
the clearing module is used for clearing the peak-shaving auxiliary service of the unit based on the unit combination result and the peak-shaving quotation information to obtain a first clearing result;
and the second processing module is used for establishing a safety constraint economic dispatching model based on the basic data, the electric energy quotation information and the first clearing result and determining a generating plan of the unit in the day ahead.
In a third aspect, an embodiment of the present invention provides a clearing apparatus for peak shaving auxiliary service in a spot shipment environment, including:
at least one processor;
at least one memory for storing at least one program;
when executed by the at least one processor, the at least one program causes the at least one processor to implement the method for rollout of peak assist services in an off-the-shelf environment.
In a fourth aspect, the embodiments of the present invention further provide a medium, in which processor-executable instructions are stored, and when executed by a processor, the processor-executable instructions are configured to implement the method for clearing peak assistant service under an off-the-shelf environment.
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:
the embodiment of the invention can well link the clearing process of the unit electric energy and the peak shaving auxiliary service in the spot goods environment, can obtain the final power generation plan of the unit at one time, and improves the clearing efficiency; and the output distribution of the unit is ensured not to conflict, so that the unit can participate in the electric energy market and the peak shaving market in the spot environment at the same time, and the output utilization rate of the unit is improved to a certain extent.
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 illustrating an embodiment of a method for clearing peak shaving assistance services in a spot shipment environment;
FIG. 2 is a schematic structural diagram of an embodiment of a peak shaving assistance service closeout system in a spot shipment environment according to the present invention;
fig. 3 is a schematic structural diagram of a clearing device for peak shaving auxiliary service in a spot-shipment environment 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.
The following describes in detail the clearing method and system of peak shaving auxiliary service in spot cargo environment according to the embodiment of the present invention with reference to the accompanying drawings, and first, the clearing method of peak shaving auxiliary service in spot cargo environment according to the embodiment of the present invention will be described with reference to the accompanying drawings. The clearing method in the embodiment of the invention can be implemented in the current stage of the spot market and can also be implemented in the real-time stage of the spot market, wherein the embodiment implemented in the current stage of the spot market is as follows:
referring to fig. 1, the clearing method for peak shaving auxiliary service in spot cargo environment in the embodiment of the present invention mainly includes the following steps:
s1: acquiring basic data of an electric power system and quotation information submitted by a unit day ahead; the quotation information comprises electric energy quotation information and peak shaving quotation information;
s2: establishing a safety constraint unit combination model of the electric power system based on the basic data and the electric energy quotation information;
s3: obtaining a unit combination result in the day ahead according to the safety constraint unit combination model;
s4: clearing the peak shaving auxiliary service of the unit based on the unit combination result and the peak shaving quotation information to obtain a first clearing result;
s5: and establishing a safety constraint economic dispatching model based on the basic data, the electric energy quotation information and the first clearing result, and determining a day-ahead unit power generation plan.
In steps S1-S3 according to the embodiment of the present invention, a safety constraint unit combination model (SCUC) of the power system is established according to the basic data and the electric energy quoted price information of the power system, and a future unit combination result and a predicted output operating point of each unit are obtained by clearing. The process for establishing the safety constraint unit combination model is detailed as follows:
first, basic data of the power system is acquired, specifically, the basic data includes, but is not limited to, the following: the system comprises system data, unit data, tie line plan data, load data and sensitivity data of a power system, wherein the system data mainly comprises time interval information, system loads and system standby requirements; the unit data mainly comprises unit basic information, unit calculation parameters, unit starting quotations, unit energy quotations, unit initial states, unit electric power constraints and unit climbing rates; 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 generating transfer distribution factors of the unit and the load injection power to the line and the section tidal current.
Based on the basic data, a SCUC constraint set of the day-ahead electric energy spot market clearing can be established, wherein the constraint set mainly comprises systematic constraints, single unit constraints, network safety constraints and other constraints which are associated with the unit. Wherein the systematic constraints comprise: a system load balancing constraint for ensuring power balance of the system; the system comprises a system positive and negative spare capacity constraint and a rotary spare capacity constraint, wherein the spare capacity is used for preventing unbalanced fluctuation of system supply and demand caused by system load prediction deviation and various actual operation accidents, and a certain capacity spare is generally reserved in the whole system, namely the total starting capacity of each day is required to meet the minimum spare capacity of the system. The single crew constraint comprises: the upper and lower limits of the output force of the unit are restricted, which indicates that the output force of the unit is in the maximum/minimum technical output range; the unit climbing restriction means that the unit climbing speed requirement is met when climbing up or down; the minimum continuous start-stop time constraint and the maximum start-stop times constraint of the unit require the minimum continuous start-stop time and the maximum start-stop times of the unit to be met due to the physical properties and the actual operation requirements of the unit. The network security constraints include line flow constraints and section flow constraints. The above equations and calculations relating to the constraints can be performed according to current standards. In addition, it should be understood that each constraint condition in the embodiments of the present invention is only an optional implementation manner, and besides the constraint conditions described above, conditions such as energy constraint, emission constraint, and the like may be considered according to actual situations; in addition, each constraint condition can be deleted according to the actual situation so as to adapt to different actual requirements.
And based on the SCUC constraint condition set, adding a constraint target to establish a safety constraint unit combination model. Specifically, the starting combination and the pre-planned output of each time interval are determined in an optimized manner by taking the minimization of the unit running cost (the maximization of social welfare in a user-side volume-reporting quotation mode) as a target. The formula for its constraint objective can be expressed as follows:
in the formula, i represents the number of the unit, T represents the number of the scheduling time period, N represents the total number of the units, and T represents the total number of the time periods, wherein T is 24 in the embodiment of the invention; pi,tThe output of the ith unit in the t period is expressed in MW; ci,t(Pi,t)、
The unit is yuan for the operation cost, the starting cost and the shutdown cost of the ith unit in the t-th time period. Wherein the unit operating cost Ci,t(Pi,t) The operation cost, the starting cost and the stopping cost can be selected and considered according to specific practical conditions, for example, the stopping cost is generally smaller, and can be 0 for simplicity and convenience.
On the basis that the method in the embodiment of the present invention is generally implemented on the basis of time periods, for convenience of description, each hour is used as a time period in the embodiment of the present invention, and the length of the time period may be flexibly set according to actual requirements, for example, when the embodiment of the present invention is executed in a real-time phase, the time period may be selected to be 15 minutes.
After the day-ahead unit combination and the pre-planned output of each period are determined through optimization in the steps, the peak shaving output of each unit is determined through a centralized bidding mode on the basis of the unit combination result and the peak shaving quotation information and with the aim of minimizing the total peak shaving cost, the peak shaving capacity provided by the units is required to reach the peak shaving demand of the system, and meanwhile, the conditions of power balance constraint, power grid safety constraint, unit operation characteristic constraint and the like of the power system peak shaving are considered. Specifically, the sum of the depth peak shaving cost, the startup peak shaving cost, and the shutdown peak shaving cost (whether may be considered) of each unit in a certain period may be used as the total peak shaving cost of the period, the objective function of the clearing is determined as the minimum total peak shaving cost of the period, and the specifically considered constraint conditions during clearing may include supply and demand balance constraints: the peak shaving output of the unit is equal to the peak shaving load requirement of the system; rotation standby constraint, transmission line capacity constraint and operation constraint of each unit.
In the embodiment of the invention, after the peak shaving auxiliary service of the unit is cleared, the output of the part of the unit which is not bid in the peak shaving market is used as a variable to establish a safety constraint economic dispatching model (SCED), and the constraint target of the SCED is also the minimum of the electricity purchasing cost, and in the embodiment of the invention, the formula can be specifically expressed as follows:
in the formula, i represents the number of the unit, T represents the number of the scheduling time period, N represents the total number of the units, and T represents the total number of the time periods, wherein T is 24 in the embodiment of the invention; pi(t) represents the residual output of the ith unit except the peak shaving output which is already bid in the t time period, and the unit is MW; is Ci(Pi(t)) is the operating cost of the ith unit in the t-th time period, and the unit is Yuan.
In the embodiment of the present invention, taking an example that the power system only includes the thermal power generating unit and the nuclear power generating unit, and the total time period is set to 96, the above formula can be expressed as follows:
Pi_n(t)＝Pi(t)+Pn(t)-PTi(t)-PTn(t)
in the formula, I + N represents the total number of thermal power generating units and nuclear power generating units, I represents the number of the thermal power generating units, and N represents the number of the nuclear power generating units;
t represents the total number of considered periods, where 96 periods of the day of operation are considered, i.e. T is 96 and T is the period number;
Pi(t)、Pn(t) respectively representing the total output of the thermal power generating unit in a period t and the total output of the nuclear power generating unit in the period t, wherein the unit is MW;
PTi(t)、PTn(t) respectively representing the peak regulation and output power of the thermal power unit in a period t and the peak regulation and output power of the nuclear power unit in a period t, wherein the unit is MW;
Pi_n(t) represents the unit output of the unit i _ n except the peak shaving output which is already successful in winning in the t time period, and the unit is MW;
Ci_n(Pi_n(t)) is the running cost of the unit i _ n in the time period t, the unit is element, and the unit is a multistage function of the unit output.
In the embodiment of the invention, the output upper limit value of each unit actually participating in the electric energy market is readjusted equivalently based on the clearing result of the peak shaving auxiliary service, so that the output distribution of the electric energy market and the peak shaving market of the units in the spot environment can not conflict, and the clearing efficiency is improved. Similar to the safety-constrained unit combination model (SCUC) described above, the equations and calculations associated with the constraints of the safety-constrained economic dispatch model (SCED) can also be performed in accordance with current standards. On the basis of the unit combination result, a mature optimization algorithm software package (such as CPLEX) is called to perform optimization calculation through a constraint target and a constraint condition of a safety constraint economic dispatching model in the t-th time period, and the unit output data and the node marginal electricity price data in the t-th time period of the unit participating in the electric energy market can be obtained. And substituting the relevant data of each time interval to obtain the output data of the unit and the marginal electricity price data of the nodes in the whole time interval. And determining the day-ahead generating plan of the unit according to the bid winning result of the unit participating in the peak shaving market and the clearing result of the SCED.
In addition, the embodiment of the invention can be executed in a real-time phase of day operation, specifically, the unit combination information of the real-time phase of day is obtained, then whether the peak regulation requirement exists in the real-time phase is judged according to the boundary condition of rolling operation of the power system, if the peak regulation requirement does not exist in the real-time phase, the real-time SCED program is executed to clear, and the real-time unit power generation plan is determined. Namely, the electric energy is cleared according to a normal electric energy market clearing mode.
If the peak regulation requirement exists in the real-time stage, organizing the real-time peak regulation auxiliary service market clearing firstly, then executing the real-time SCED program clearing according to the real-time peak regulation auxiliary service market clearing result, and determining a real-time unit power generation plan, namely considering the real-time peak regulation auxiliary service market clearing before the electric energy market clearing, readjusting the upper limit value of the output of each unit participating in the electric energy market in the real-time stage based on the real-time peak regulation auxiliary service clearing result, then executing the real-time SCED program clearing according to the readjusted result, and determining the real-time unit power generation plan. For specific implementation steps and advantageous effects, reference may be made to the embodiments in the previous stage, and details are not described herein.
Next, a description will be given of a discharge system of a peak shaving assistance service in an off-the-shelf environment proposed according to an embodiment of the present invention with reference to the accompanying drawings.
Fig. 2 is a schematic structural diagram of a clearing system of a peak shaving auxiliary service in a spot-goods environment according to an embodiment of the present invention.
The system specifically comprises:
the acquiring module 101 is used for acquiring basic data of the power system and quotation information submitted by a unit in the future; the quotation information comprises electric energy quotation information and peak shaving quotation information;
the first processing module 102 is used for establishing a safety constraint unit combination model of the power system based on the basic data and the electric energy quotation information, and obtaining a day-ahead unit combination result according to the safety constraint unit combination model;
the clearing module 103 is used for clearing the peak-shaving auxiliary service of the unit based on the unit combination result and the peak-shaving quotation information to obtain a first clearing result;
and the second processing module 104 is used for establishing a safety constraint economic dispatching model and determining a generating plan of the unit in the future based on the basic data, the electric energy quotation information and the first clearing result.
It can be seen that the contents in the foregoing method embodiments are all applicable to this system embodiment, the functions specifically implemented by this system embodiment are the same as those in the foregoing method embodiment, and the advantageous effects achieved by this system embodiment are also the same as those achieved by the foregoing method embodiment.
Referring to fig. 3, an embodiment of the present invention provides a clearing device for peak shaving auxiliary service in a spot shipment environment, including:
at least one processor 201;
at least one memory 202 for storing at least one program;
when executed by the at least one processor 201, the at least one program causes the at least one processor 201 to implement the method of rollout of peak assist services in an off-the-shelf environment.
Similarly, the contents of the method embodiments are all applicable to the apparatus embodiments, the functions specifically implemented by the apparatus embodiments are the same as the method embodiments, and the beneficial effects achieved by the apparatus embodiments are also the same as the beneficial effects achieved by the method embodiments.
An embodiment of the present invention further provides a storage medium, in which instructions executable by the processor 201 are stored, and when the instructions executable by the processor 201 are executed by the processor 201, the method for clearing the peak shaving assistance service in the spot environment is performed.
Similarly, the contents in the foregoing method embodiments are all applicable to this storage medium embodiment, the functions specifically implemented by this storage medium embodiment are the same as those in the foregoing method embodiments, and the advantageous effects achieved by this storage medium embodiment are also the same as those achieved by the foregoing method embodiments.
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 described functions and/or features may be integrated in a single physical device and/or software module, or one or more 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 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 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 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). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the 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. The clearing method of the peak regulation auxiliary service in the spot-cargo environment is characterized by comprising the following steps:
acquiring basic data of an electric power system and quotation information submitted by a unit day ahead; the quotation information comprises electric energy quotation information and peak shaving quotation information;
establishing a safety constraint unit combination model of the electric power system based on the basic data and the electric energy quotation information;
obtaining a unit combination result in the day ahead according to the safety constraint unit combination model;
clearing the peak shaving auxiliary service of the unit based on the unit combination result and the peak shaving quotation information to obtain a first clearing result;
and establishing a safety constraint economic dispatching model based on the basic data, the electric energy quotation information and the first clearing result, and determining a day-ahead unit power generation plan.
2. The method of claim 1, wherein the base data includes system data, crew data, tie-line plan data, load data, and sensitivity data of the power system.
3. The method according to claim 1, wherein the step of clearing the peak shaving assistance service of the unit based on the unit combination result and the peak shaving quotation information to obtain the first clearing result specifically comprises:
constructing supply and demand balance constraint of the peak shaving auxiliary service according to a preset peak shaving demand;
forming a constraint condition set of the peak regulation auxiliary service according to the supply and demand balance constraint, the power balance constraint and the power grid safety constraint of the power system and the operation characteristic constraint of the unit;
acquiring the total peak regulation cost of the peak regulation auxiliary service according to the peak regulation quotation information;
and clearing the constraint condition set based on the peak regulation auxiliary service by using the minimization of the total peak regulation cost as a constraint target to obtain the peak regulation winning power of each unit.
4. The method for clearing peak shaving aid services in an off-the-shelf environment according to claim 3, wherein the step of establishing a safety constrained economic dispatch model based on the basic data, the electric energy quote information and the first clearing result specifically comprises:
readjusting the upper and lower limit constraints of the output of each unit according to the peak shaving winning power of each unit in the first clearing result;
and establishing a safety constraint economic dispatching model based on the upper and lower limit constraints of the output of the readjusted unit.
5. The method according to claim 4, wherein the step of readjusting the upper and lower limit constraints of the output of each unit according to the peak shaving winning power of each unit in the first result comprises:
acquiring the upper limit value of the output of each unit;
and determining the result obtained by subtracting the peak shaving winning output of the unit from the output upper limit value of each unit, and taking the result as the new output upper limit value of the corresponding unit.
6. The method for clearing peak shaving aid services in an off-the-shelf environment according to any one of claims 1-5, further comprising the steps of:
judging whether a peak regulation requirement exists in a real-time stage;
and if the peak regulation requirement does not exist in the real-time stage, executing a real-time safety constraint economic dispatching program to clear, and determining a real-time unit power generation plan.
7. The method for clearing peak shaving aid services in an off-the-shelf environment according to claim 6, further comprising the steps of:
if the peak regulation requirement exists in the real-time stage, the real-time peak regulation auxiliary service market clearing is organized firstly, then the real-time safety constraint economic dispatch program clearing is executed according to the real-time peak regulation auxiliary service market clearing result, and the real-time unit power generation plan is determined.
8. The system of coming out of peak shaver auxiliary service under the spot cargo environment, its characterized in that includes:
the acquisition module is used for acquiring basic data of the power system and quotation information submitted by the unit in the future; the quotation information comprises electric energy quotation information and peak shaving quotation information;
the first processing module is used for establishing a safety constraint unit combination model of the power system based on the basic data and the electric energy quotation information, and obtaining a unit combination result in the day before according to the safety constraint unit combination model;
the clearing module is used for clearing the peak-shaving auxiliary service of the unit based on the unit combination result and the peak-shaving quotation information to obtain a first clearing result;
and the second processing module is used for establishing a safety constraint economic dispatching model based on the basic data, the electric energy quotation information and the first clearing result and determining a generating plan of the unit in the day ahead.
9. The device of clearing of peak regulation auxiliary service under spot cargo environment, its characterized in that includes:
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 the method of closeout of peak shaving assistance service in an off-the-shelf environment as claimed in any one of claims 1-7.
10. A medium having stored therein processor-executable instructions, characterized in that: the processor-executable instructions, when executed by a processor, are for implementing a method of clearing a peak shaver assistance service in an off-the-shelf environment as claimed in any one of claims 1-7.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111724254A (en) * | 2020-05-27 | 2020-09-29 | 中国南方电网有限责任公司 | Method, system, device and medium for peak regulation auxiliary service and electric energy combined clearing |
| CN111724254B (en) * | 2020-05-27 | 2024-02-06 | 中国南方电网有限责任公司 | Peak regulation auxiliary service and electric energy combined clearing method, system, device and medium |
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| CN112348274A (en) * | 2020-11-17 | 2021-02-09 | 国家电网有限公司 | Peak shaving-considered power spot market clearing method, system, equipment and medium |
| 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 |
| CN112993974A (en) * | 2020-12-26 | 2021-06-18 | 广东电网有限责任公司电力调度控制中心 | Method, device, terminal and medium for calculating market discharge price of electric power spot goods day ahead |
| CN112993974B (en) * | 2020-12-26 | 2023-03-14 | 广东电网有限责任公司电力调度控制中心 | Method, device, terminal and medium for calculating market discharge price before current electric power spot date |
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