CN113744035B - Real-time spot market blocking adjustment method and system for centralized bidding at power generation side - Google Patents
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Abstract
The invention discloses a method and a system for adjusting real-time spot market blocking of centralized bidding on a power generation side.
Description
Technical Field
The invention belongs to the field of electric power spot market, and particularly relates to a real-time spot market blocking adjustment method and system for centralized bidding at a power generation side.
Background
At present, a plurality of test points are developed on spot markets, and almost all the test points are centralized spot markets, and market members mainly adopt a power generation side. Due to the rapid development of the power demand, although various extra-high voltage alternating current and direct current are rapidly built, a large number of power transmission and transformation branches or section blocking phenomena still exist in each test point.
At present, a plurality of test points are developed on spot markets, and almost all the test points are centralized spot markets, and market members mainly adopt a power generation side. Due to the rapid development of the power demand, although various extra-high voltage alternating current and direct current are rapidly built, a large number of power transmission and transformation branches or section blocking phenomena still exist in each test point.
In general, in the current market link in the day, if the blockage is serious, the situation that the planned power flow of the branch or the section is out of limit and cannot be eliminated occurs, and market operators can adjust boundary conditions, such as a tie line plan, equipment out-of-service, a gas or pumping and accumulating unit with strong capacity of increasing and adjusting, and the like, and ensure that the final market clearing result meets the branch or the section safety constraint by repeatedly and manually calling the safety constraint economic dispatch and the safety constraint unit combination calculation for a plurality of times.
However, in the real-time spot market link, the market operator does not have enough time and energy to manually iterate and eliminate the out-of-limit condition, and the power generation plan of the market clearance needs to be issued to the power plant for execution at the time, so that the power generation plan can only be continuously executed even if the planned trend out-of-limit occurs. The current clearing result generally reduces the out-of-limit degree as much as possible, which may bring about a great improvement in the market electricity purchasing cost and seriously affect the fundamental goal of market operation.
In the existing safe constraint economic dispatching and safe constraint unit combination calculation, branch and section constraint conditions are added into an objective function by adding a penalty function, so that safe constraint control is realized. Although the method ensures that the mathematical model has a feasible solution under the condition of branch or section out-of-limit, the issuing execution of the power generation plan is ensured. However, when the branch or the section is out of limit, the effect of the market electricity purchasing cost based on quotation in the objective function is not dominant, and in the actual solving process, the planned power flow of the branch or the section is possibly reduced by a very small amount, but the great electricity purchasing cost is paid. And due to the specificity of the real-time market, factors such as tie line planning, equipment outage and re-service cannot be manually interfered, and a clear result can only be issued, so that the aim of improving the resource optimization configuration of market operation is seriously affected.
Disclosure of Invention
The invention aims to provide a method and a system for adjusting real-time spot market blocking of centralized bidding on a power generation side, which are used for solving the problem that the market electricity purchasing cost is greatly increased when the planned trend is over-limit.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a method for real-time spot market blocking adjustment of power generation side centralized bidding, the method comprising:
respectively carrying out market clearing without considering safety constraint and market clearing with considering safety constraint, and solving an unconstrained initial clearing result and a safe initial clearing result, wherein the unconstrained initial clearing result comprises an unconstrained unit plan, an unconstrained system power price and unconstrained plan power flows of branches and sections, and the safe initial clearing result comprises a constrained unit plan, constrained unit node power prices and constrained plan power flows of branches and sections;
judging whether the constraint planned power flow of the branch and the section has an out-of-limit condition, if not, issuing a safety constraint initial clearing result; if so, judging whether the moment of increasing the market electricity purchasing cost caused by excessive regulation of part of units exists, if not, issuing a safety constraint initial clearing result, otherwise, analyzing and calculating a loose branch or section and the moment thereof;
and adjusting the limit of the loose branch or section, and carrying out market clearing considering safety constraint again to obtain a safety constraint optimizing clearing result, comparing the safety constraint optimizing clearing result with a safety constraint initial clearing result, judging whether the increase of the market electricity purchasing cost is avoided after the limit of the branch or section is adjusted, if so, issuing the safety constraint optimizing clearing result, otherwise, issuing the safety constraint initial clearing result.
Further, the market definition of the implementation without considering safety constraints is specifically: based on the quotation of the power generation enterprises, taking the minimum market electricity purchasing cost as a first objective function:
wherein N is the number of units participating in the real-time spot market, i is the number of units, T is the number of calculated time periods of the real-time spot market, T is the number of time periods, and C i,t Quotation for unit i in period t, p i,t Unconstrained unit planning for unit i during period t;
and the unconstrained system electricity price, the unconstrained planned power flow of the branches and the sections are obtained through the unconstrained unit planning solution of the unit i in the period t.
Further, the constraint condition of the first objective function includes:
power generation balance constraint:
wherein M is the number of units with fixed output in a non-real-time spot market or other fixed output, Q j,t Unit planning for non-real-time spot market or other fixed-output unit j period t, X t Power scheduled to be sent to external link for period t, F t A system load prediction representing a period t;
real-time spot market unit power upper and lower limit constraint:
wherein,Pis the lower limit of the generating power of the unit,the upper limit of the generating power of the unit is set;
and (3) unit lifting rate constraint: (-1) ΔP i d ≤p i,t+1 -p i,t ≤ΔP i u
Wherein DeltaP i d For maximum rate of decreasing output of the unit, ΔP i u The maximum rate of the lifting force of the machine set is obtained.
Further, the market definition for taking security constraints into account is specifically: the following second objective function is used:
wherein V is a penalty factor, NL is the number of branches, l is the number of branches,the more limited the forward power flow is for the branch, +.>For the more limit of the branch reverse tide, NS is the number of sections, s is the number of sections, and +.>The more limited the forward power flow of the section is, +.>The more limited the reverse power flow of the section, p' i,t Constrained unit plans for unit i during period t;
and the constrained unit node electricity price, the constrained planned power flow of the branches and the sections are obtained through constrained unit plan calculation of the unit i in the period t.
Further, the specific process for judging whether the moment that the excessive regulation of the partial units causes the increase of the market electricity purchasing cost is that:
for the moment of constraint planned power flow out-of-limit with branches and sections, the change rate of the market electricity purchasing cost caused by the safety constraint at the moment is calculated respectively, and the calculation formula is as follows:
wherein v' t For the change rate of the cost of the commercial power purchase caused by the safety constraint of the out-of-limit time t, p' i,t Constrained unit plan for unit i at time period t, p i,t Unconstrained crew planning for crew i during time period t, e' i,t Node electricity price of constrained unit i in period t, e t The electricity price is the unconstrained system;
if v 'at time t' t Is larger than a first preset threshold value K 1 Setting the time T as the time of increasing the market electricity purchasing cost, counting the number of times of increasing the market electricity purchasing cost as T ', analyzing and calculating a loose branch or section and the time thereof if T ' is larger than 0, and issuing a safety constraint initial clearing result if T ' is 0.
Further, if T' is greater than 0, the process of analyzing and calculating the relaxed branch or section and the moment thereof is specifically as follows:
for each out-of-limit branch or section l in each moment in T', respectively finding out a market machine set with machine set lifting force favorable for reducing out-of-limit degree, sorting according to the absolute value of sensitivity from small to large, and screening out that the absolute value of sensitivity is smaller than a second preset threshold value K 2 First set A of units t,l ；
Calculating the cost change delta C 'of each market machine set at each moment in T' t，i ＝p' i，t e' i，t -p i，t e t Screening out that the cost variation is larger than a third preset threshold value K 3 Second set of units B t ；
A second set B of units for each instant in T t Calculating a first set A of units corresponding to each out-of-limit branch or section t,l Is intersected to obtain U t,l ；
If U t,l If the space is not empty, taking the time t of the branch or the section l as a relaxation object, adjusting the limit of the branch or the section, and carrying out market clearing again by considering safety constraint; if U t,l If the set is empty, a security constraint initial clearing result is issued.
Further, the process of adjusting the limit of the loose branch or section and carrying out market clearing again by considering the safety constraint specifically comprises the following steps:
finding out clear planned flow of safety constraint of loose branch or section, setting relaxation parameter K 4 If the planned power flow is forward out of limit, modifying the forward limit of the branch or section to the planned power flow plus K 4 If the planned flow is a reverse out-of-limit, modifying the reverse limit of the branch or section to be the planned flow minus K 4 ；
And when the branch or section quota is represented in the second objective function, representing the quota by the modified quota, and carrying out market clearing considering the safety constraint again to obtain a safety constraint optimizing clearing result.
Further, whether the increase of the market electricity purchasing cost is avoided after the limit of the branch or the section is adjusted is judged, if yes, a safety constraint optimizing clearing result is issued, otherwise, the specific process of issuing the safety constraint initial clearing result is as follows:
calculating an absolute cost change index Z ' = (C ' -C ') and a relative cost change index Z ' = (C ' -C)/(C ' -C '), wherein C is the total cost of electricity purchased according to the initial clearing result without safety constraint, C ' is the total cost of electricity purchased according to the initial clearing result with safety constraint, and C ' is the total cost of electricity purchased according to the optimized clearing result with safety constraint;
judging threshold K according to preset absolute cost change 5 And a relative cost change discrimination threshold K 6 If Z'>K 5 And Z'<K 6 At the same timeAnd if the result meets the requirement, the limit of the branch or the section is adjusted, the increase of the power generation cost is avoided, and a safety constraint optimization clearing result is issued, otherwise, a safety constraint initial clearing result is issued.
Further, the total cost of electricity purchase obtained according to the initial clearing result without safety constraint
The total cost of the electricity purchase obtained according to the initial clearing result with the safety constraint
The total cost of the electricity purchase obtained by optimizing the clearing result according to the safety constraintWherein p' i，t Constrained unit plan for unit i at time period t, e "for re-market clearing taking security constraints into account" i，t The node electricity price of the constrained unit i in the period t is obtained when the market taking the safety constraint into consideration is cleared again.
A real-time spot market blocking adjustment system for power generation side centralized bidding, comprising: the system comprises an initial market clearing module, a first judging module, a second judging module, a relaxation analysis calculating module, an optimization market clearing module, a comparison judging module, a first clearing result issuing module and a second clearing result issuing module, wherein:
an initial market clearing module: the method comprises the steps of respectively carrying out market clearing without considering safety constraint and market clearing with considering safety constraint to obtain an unconstrained initial clearing result and a safe constrained initial clearing result, wherein the unconstrained initial clearing result comprises an unconstrained unit plan, an unconstrained system power price and unconstrained plan power flows of branches and sections, and the safe constrained initial clearing result comprises a constrained unit plan, constrained unit node power prices and constrained plan power flows of branches and sections;
a first judging module: the method comprises the steps of judging whether the constraint planned power flow of a branch and a section is out of limit or not, and if not, entering a first clearing result release module; if yes, entering a second judging module;
and a second judging module: the system comprises a first clearing result issuing module, a relaxation analysis calculation module, a first clearing result issuing module, a second clearing result issuing module, a relaxation analysis calculation module and a first clearing result issuing module, wherein the first clearing result issuing module is used for judging whether the moment that the market electricity purchasing cost is increased due to the excessive regulation of part units exists or not;
a relaxation analysis calculation module: the method comprises the steps of analyzing and calculating a loose branch or section and time thereof;
and (5) optimizing a market clearing module: adjusting the limit of the loose branch or section, and carrying out market clearing considering safety constraint again to obtain a safety constraint optimizing clearing result;
and the comparison and judgment module is used for: the method comprises the steps of comparing a safety constraint optimized clearing result with a safety constraint initial clearing result, judging whether the increase of the market purchase cost is avoided after the limit of a branch or a section is adjusted, if yes, entering a first clearing result release module, otherwise, entering a second clearing result release module;
the first clear result issuing module: the method is used for issuing an initial clearing result with safety constraint;
the second clear result issuing module: the method is used for issuing the security constraint optimization clearing result.
Compared with the prior art, the invention has the following beneficial technical effects:
according to the invention, whether the situation of out-of-limit of the branches or the sections exists or not is judged, further, the moment that the market electricity purchasing cost is greatly increased due to the excessive regulation of the unit with lower sensitivity is judged and analyzed, the relaxed branches or the relaxed sections are calculated, the clearing is optimized again through regulating the limit of the relaxed branches or the relaxed sections, whether the great improvement of the market electricity purchasing cost can be avoided after the limit is regulated or not is compared, the clearing result with obvious final effect is selected, and the market electricity purchasing cost is greatly reduced at the cost of extremely small planned power flow out-of-limit increment under the unavoidable situation of out-of-limit of the planned power flow, so that the benefit of real-time spot market operation is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a schematic flow chart of the method of the present invention;
FIG. 2 is a schematic diagram of the system structure of the present invention.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings and specific examples.
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the real-time spot market with centralized bidding on the power generation side, in order to ensure that the branch or section is seriously blocked and the planned power flow is out of limit, the power generation plan is feasible, the out-of-limit planned power flow of the branch or section is increased to an objective function with minimum market electricity purchasing cost in a penalty function mode, and the influence order of magnitude of the out-of-limit on the objective function is far greater than the market electricity purchasing cost. In the case of an out-of-limit condition, an excessive adjustment of the out-of-limit branch or the unit with smaller section sensitivity may be caused, and only a small amount of out-of-limit quantity is reduced, but the market electricity purchase cost may be greatly increased. The invention provides a real-time spot market blocking adjustment method suitable for centralized bidding at a power generation side, which is used for dealing with the situation that market purchase cost of the market is greatly increased due to the fact that the limit is reduced as much as possible in order to meet the safe operation requirement of a power grid under the situation that branches or sections are seriously blocked and the planned trend is out of limit when the real-time spot market is provided for the member bidding of the market at the power generation side. The method comprises the steps of firstly judging whether the situation of greatly increasing cost possibly caused by excessive adjustment of the generator set exists under the condition of branch or section out-of-limit, calculating related branch or section with constraint relaxation and relaxation parameters thereof, and finally selecting a final result to obviously clear the result through the comparison and verification of optimizing clearing and market electricity purchasing cost again, thereby improving the market operation benefit under the condition of blocking.
Firstly, respectively carrying out market clearing without considering safety constraint and with considering safety constraint to obtain an unconstrained initial clearing result and a safe constrained initial clearing result, wherein the unconstrained initial clearing result comprises an unconstrained unit plan, an unconstrained system power price and unconstrained plan power flows of branches and sections, and the safe constrained initial clearing result comprises a constrained unit plan, constrained unit node power prices and constrained plan power flows of branches and sections; and then, analyzing and judging whether the time when the market electricity purchasing cost is greatly increased due to the excessive regulation of part of units possibly exists under the condition that the out-of-limit exists in the initial clearing result with the safety constraint. If possible, the relaxed branches or sections and their moments are analytically calculated. And then, introducing the adjusted branch or section quota into market clearing calculation considering the safety constraint, and carrying out optimization solution again to obtain a safety constraint optimization clearing result. Comparing the optimized clearing result with the initial clearing result with the safety constraint, judging whether the market electricity purchasing cost is prevented from being greatly improved after the limit of the branch or the section is adjusted, if so, issuing the optimized clearing result with the safety constraint to the power plant for execution, otherwise, issuing the initial clearing result with the safety constraint to the power plant for execution.
The method specifically comprises the following steps:
and step one, respectively carrying out market clearing without considering safety constraint and considering safety constraint.
(1) Market clearing is performed without consideration of safety constraints: based on the quotation of the power generation enterprises, taking the minimum market electricity purchasing cost as a first objective function:
wherein N is the number of units participating in the real-time spot market, i is the number of units, T is the number of calculated time periods in the real-time market, T is the number of time periods, and C i,t Quotation for period t of unit i, p i,t Unconstrained crew planning for crew i time period t.
The constraints of the first objective function include:
power generation balance constraint:wherein M is the number of units with fixed output in a non-real-time spot market or other fixed output, Q j,t Unit planning for non-real-time spot market or other fixed-output unit j period t, X t Power scheduled to be sent to external link for period t, F t A system load prediction representing a period t;
real-time spot market unit power upper and lower limit constraint:wherein,Pis the lower limit of the generating power of the unit,and the upper limit of the generating power of the unit is set.
And (3) unit lifting rate constraint: (-1) ΔP i d ≤p i,t+1 -p i,t ≤ΔP i u Wherein ΔP i d For maximum rate of decreasing output of the unit, ΔP i u The maximum rate of the lifting force of the machine set is obtained.
The calculated results comprise an unconstrained unit plan, an unconstrained system power price and unconstrained plan power flows of branches and sections, wherein the unconstrained system power price and the unconstrained plan power flows of the branches and the sections are obtained through solving the unconstrained unit plan.
(2) Market clearing taking security constraints into account: the main difference is that the influence factors of branch and section out-of-limit are added in the first objective function which is clear in market and does not consider the safety constraint, so as to form a second objective function, and the specific formula is as follows:
wherein V is a penalty factor, NL is the number of branches, l is the number of branches,the more limited the forward power flow is for the branch, +.>For the more limit of the branch reverse tide, NS is the number of sections, s is the number of sections, and +.>The more limited the forward power flow of the section is, +.>The more limited the reverse power flow of the section, p' i,t Constrained crew planning for crew i at time period t.
The market clearing by considering the safety constraint can calculate the result including the constrained unit plan, the marginal power price of each unit node and the constrained planned power flow of the branch and the section, and the constrained planned power flow of each unit node and the branch and the section is obtained by solving the constrained unit plan.
Step two: judging whether the limited planned power flow of the branch or the section is out of limit, and if so, entering the step III. If the initial clear result does not exist, blocking adjustment is not needed, and the initial clear result with safety constraint is issued and ended.
Step three: and analyzing and judging whether the time when the excessive adjustment of partial units possibly causes the increase of the market purchase cost exists.
(1) For the moment when the constraint plan power flow out of limit exists in the branch or the section, the change rate of the market electricity purchasing cost caused by the safety constraint at the moment is calculated respectively, and the calculation formula is as follows:
wherein v' t For the change rate of the cost of the commercial power purchase caused by the safety constraint of the out-of-limit time t, p' i,t Constrained unit plan for unit i at time period t, p i,t Unconstrained crew planning for crew i during time period t, e' i,t Node electricity price of constrained unit i in period t, e t The electricity price is the unconstrained system;
(2) If v 'at time t' t Is larger than a first preset threshold value K 1 The time is set as the time when the market electricity purchase cost increases, and the number of times when the market electricity purchase cost increases is counted as T'. If T' is greater than 0, step four is entered. If T' is 0, the blocking adjustment is not needed, and the initial clearing result with the safety constraint in the first step is released and ended.
And step four, analyzing and calculating loose branches or sections and moments thereof.
(1) For each out-of-limit branch or section l at each moment in T', a market set of units is found out, for which the set lifting force is favorable for reducing the out-of-limit degreeAnd then sorting according to the absolute value of the sensitivity from small to large, and screening out that the absolute value of the sensitivity is smaller than a second preset threshold value K 2 First set A of units t,l 。
(2) Calculating the cost change delta C 'of each market unit at each moment in T' t,i ＝p' i,t e' i,t -p i,t e t Screening out that the cost variation is larger than a third preset threshold value K 3 Second set of units B t 。
(3) A second set B of units for each instant in T t Calculating a first set A of units corresponding to each out-of-limit branch or section t,l Is intersected to obtain U t,l ；
(4) If U t,l If the space is not empty, taking the time t of the branch or the section l as a relaxation object, adjusting the limit of the branch or the section, and carrying out market clearing again by considering safety constraint; if U t,l If the set is empty, a security constraint initial clearing result is issued, and the process is finished.
And fifthly, performing blocking adjustment, specifically adjusting the limit of the branch or the section, and performing market clearing again in consideration of safety constraint.
(1) Finding a planned flow with clear safety constraint for a relaxed object, and setting a relaxation parameter K 4 If the planned flow is forward out of limit, the forward limit of the branch or section is modified to the planned flow plus K 4 If the planned flow is out of limit, the reverse limit of the branch or section is modified to the planned flow minus K 4 。
(2) And when the branch or section quota is represented in the second objective function, representing the quota by the modified quota, and carrying out market clearing considering the safety constraint again to obtain a safety constraint optimizing clearing result.
And step six, measuring whether the increase of the market electricity purchasing cost is avoided by using a cost change index.
Calculating an absolute cost change index Z ' = (C ' -C ') and a relative cost change index Z ' = (C ' -C)/(C ' -C '), wherein C is the total cost of electricity purchased according to the initial clearing result without safety constraint, C ' is the total cost of electricity purchased according to the initial clearing result with safety constraint, and C ' is the total cost of electricity purchased according to the optimized clearing result with safety constraint;
the total cost of the electricity purchase obtained according to the initial clearing result without safety constraintThe total cost of electricity purchase obtained according to the initial clearing result with safety constraint>The total cost of electricity purchase obtained by optimizing the clearing result according to the safety constraint +.>Wherein p' i,t Constrained unit plan for unit i at time period t, e "for re-market clearing taking security constraints into account" i,t The node electricity price of the constrained unit i in the period t is obtained when the market taking the safety constraint into consideration is cleared again.
Judging threshold K according to preset absolute cost change 5 And a relative cost change discrimination threshold K 6 If Z'>K 5 And Z'<K 6 Meanwhile, after the limit of the branch or the section is adjusted, the increase of the power generation cost is avoided, and a safety constraint optimization clearing result is issued, otherwise, a safety constraint initial clearing result is issued.
The embodiment of the invention also provides a real-time spot market blocking adjustment system for centralized bidding at the power generation side, which is shown in fig. 2 and comprises the following steps: the system comprises an initial market clearing module, a first judging module, a second judging module, a relaxation analysis calculating module, an optimization market clearing module, a comparison judging module, a first clearing result issuing module and a second clearing result issuing module, wherein:
an initial market clearing module: the method comprises the steps of respectively carrying out market clearing without considering safety constraint and market clearing with considering safety constraint to obtain an unconstrained initial clearing result and a safe constrained initial clearing result, wherein the unconstrained initial clearing result comprises an unconstrained unit plan, an unconstrained system power price and unconstrained plan power flows of branches and sections, and the safe constrained initial clearing result comprises a constrained unit plan, constrained unit node power prices and constrained plan power flows of branches and sections;
a first judging module: the method comprises the steps of judging whether the constraint planned power flow of a branch and a section is out of limit or not, and if not, entering a first clearing result release module; if yes, entering a second judging module;
and a second judging module: the system comprises a first clearing result issuing module, a relaxation analysis calculation module, a first clearing result issuing module, a second clearing result issuing module and a relaxation analysis calculation module, wherein the first clearing result issuing module is used for judging whether the time of greatly increasing the market electricity purchasing cost caused by excessive regulation of part units exists or not;
a relaxation analysis calculation module: the method comprises the steps of analyzing and calculating a loose branch or section and time thereof;
and (5) optimizing a market clearing module: adjusting the limit of the loose branch or section, and carrying out market clearing considering safety constraint again to obtain a safety constraint optimizing clearing result;
and the comparison and judgment module is used for: the method comprises the steps of comparing a safety constraint optimized clearing result with a safety constraint initial clearing result, judging whether the market electricity purchasing cost is prevented from being greatly improved after the limit of a branch or a section is adjusted, if yes, entering a first clearing result release module, otherwise, entering a second clearing result release module;
the first clear result issuing module: the method is used for issuing an initial clearing result with safety constraint;
the second clear result issuing module: the method is used for issuing the security constraint optimization clearing result.
Some technical terms in this embodiment are explained below:
the centralized bidding on the power generation side is a main power spot market mode in the current stage of China, which means that only power generation enterprises declare prices and then are unified in a technical support system.
Blocking refers to the situation in which the planned power due to a branch or section reaches a constraint limit.
Out of limit refers to the situation where the planned power of a branch or section exceeds a constraint limit, regardless of how the power plan of the genset is arranged.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the foregoing embodiments are merely for illustrating the technical aspects of the present invention and not for limiting the scope thereof, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes, modifications or equivalents may be made to the specific embodiments of the present invention after reading the present invention, and these changes, modifications or equivalents are within the scope of the invention as defined in the appended claims.
Claims (8)
1. A method for real-time spot market blocking adjustment of a power generation side centralized bidding, the method comprising:
respectively carrying out market clearing without considering safety constraint and market clearing with considering safety constraint, and solving an unconstrained initial clearing result and a safe initial clearing result, wherein the unconstrained initial clearing result comprises an unconstrained unit plan, an unconstrained system power price and unconstrained plan power flows of branches and sections, and the safe initial clearing result comprises a constrained unit plan, constrained unit node power prices and constrained plan power flows of branches and sections;
judging whether the constraint planned power flow of the branch and the section has an out-of-limit condition, if not, issuing a safety constraint initial clearing result; if so, judging whether the moment of increasing the market electricity purchasing cost caused by excessive regulation of part of units exists, if not, issuing a safety constraint initial clearing result, otherwise, analyzing and calculating a loose branch or section and the moment thereof;
the specific process for judging whether the moment that the excessive regulation of the partial units causes the increase of the market electricity purchasing cost exists is as follows:
for the moment of constraint planned power flow out-of-limit with branches and sections, the change rate of the market electricity purchasing cost caused by the safety constraint at the moment is calculated respectively, and the calculation formula is as follows:
wherein N is the number of units participating in real-time spot market, v' t For the change rate of the cost of the commercial power purchase caused by the safety constraint of the out-of-limit time t, p' i,t Constrained unit plan for unit i at time period t, p i,t Unconstrained crew planning for crew i during time period t, e' i,t Node electricity price of constrained unit i in period t, e t The electricity price is the unconstrained system;
if v 'at time t' t Is larger than a first preset threshold value K 1 Setting the time T as the time of increasing the market electricity purchasing cost, counting the number of the time of increasing the market electricity purchasing cost as T ', analyzing and calculating a loose branch or section and the time thereof if T ' is larger than 0, and issuing a safety constraint initial clearing result if T ' is 0;
if T' is greater than 0, the process of analyzing and calculating the relaxed branch or section and the moment thereof is specifically as follows:
for each out-of-limit branch or section l in each moment in T', respectively finding out a market machine set with machine set lifting force favorable for reducing out-of-limit degree, sorting according to the absolute value of sensitivity from small to large, and screening out that the absolute value of sensitivity is smaller than a second preset threshold value K 2 First set A of units t,l ；
Calculating the cost change delta C 'of each market machine set at each moment in T' t,i ＝p′ i,t e′ i,t -p i,t e t Screening out that the cost variation is larger than a third preset threshold value K 3 Second set of units B t ；
A second set B of units for each instant in T t Calculating a first set A of units corresponding to each out-of-limit branch or section t,l Is intersected to obtain U t,l ；
If U t,l If not empty, the relaxation is taken as the time t of the branch or section lThe limit of the branch or the section is adjusted, and market clearing considering safety constraint is carried out again; if U t,l If the result is an empty set, a security constraint initial clearing result is issued;
and adjusting the limit of the loose branch or section, and carrying out market clearing considering safety constraint again to obtain a safety constraint optimizing clearing result, comparing the safety constraint optimizing clearing result with a safety constraint initial clearing result, judging whether the increase of the market electricity purchasing cost is avoided after the limit of the branch or section is adjusted, if so, issuing the safety constraint optimizing clearing result, otherwise, issuing the safety constraint initial clearing result.
2. The method for real-time spot market blocking adjustment of centralized bidding on power generation side according to claim 1, wherein the market clearing without considering security constraints is specifically: based on the quotation of the power generation enterprises, taking the minimum market electricity purchasing cost as a first objective function:
wherein N is the number of units participating in the real-time spot market, i is the number of units, T is the number of calculated time periods of the real-time spot market, T is the number of time periods, and C i,t Quotation for unit i in period t, p i,t Unconstrained unit planning for unit i during period t;
and the unconstrained system electricity price, the unconstrained planned power flow of the branches and the sections are obtained through the unconstrained unit planning solution of the unit i in the period t.
3. The method for real-time spot-market blocking adjustment of a power generation-side centralized bid according to claim 2, wherein the constraint condition of the first objective function comprises:
power generation balance constraint:
wherein M is the number of units with fixed output in a non-real-time spot market or other fixed output, Q j,t Unit planning for non-real-time spot market or other fixed-output unit j period t, X t Power scheduled to be sent to external link for period t, F t A system load prediction representing a period t;
real-time spot market unit power upper and lower limit constraint:
wherein,Pis the lower limit of the generating power of the unit,the upper limit of the generating power of the unit is set;
and (3) unit lifting rate constraint: (-1) ΔP i d ≤p i,t+1 -p i,t ≤ΔP i u
Wherein DeltaP i d For maximum rate of decreasing output of the unit, ΔP i u The maximum rate of the lifting force of the machine set is obtained.
4. The method for adjusting the real-time spot market blocking of the centralized bidding on the power generation side according to claim 2, wherein the market clearing taking into consideration the safety constraint is specifically: the following second objective function is used:
wherein V is a penalty factor, NL is the number of branches, l is the number of branches,the more limited the forward power flow is for the branch, +.>For the more limit of the branch reverse tide, NS is the number of sections, s is the number of sections, and +.>The more limited the forward power flow of the section is, +.>The more limited the reverse power flow of the section, p' i,t Constrained unit plans for unit i during period t;
and the constrained unit node electricity price, the constrained planned power flow of the branches and the sections are obtained through constrained unit plan calculation of the unit i in the period t.
5. The method for adjusting real-time spot market blocking according to claim 1, wherein the adjustment of the slack branch or section limit, and the process of clearing the market again considering the safety constraint, is specifically as follows:
finding out clear planned flow of safety constraint of loose branch or section, setting relaxation parameter K 4 If the planned power flow is forward out of limit, modifying the forward limit of the branch or section to the planned power flow plus K 4 If the planned flow is a reverse out-of-limit, modifying the reverse limit of the branch or section to be the planned flow minus K 4 ；
And when the branch or section quota is represented in the second objective function, representing the quota by the modified quota, and carrying out market clearing considering the safety constraint again to obtain a safety constraint optimizing clearing result.
6. The method for real-time spot market blocking adjustment of centralized bidding on a power generation side according to claim 5, wherein the specific process of judging whether to avoid the increase of the market electricity purchasing cost after adjusting the limit of the branch or section is as follows:
calculating an absolute cost change index Z ' = (C ' -C ') and a relative cost change index Z ' = (C ' -C)/(C ' -C '), wherein C is the total cost of electricity purchased according to the initial clearing result without safety constraint, C ' is the total cost of electricity purchased according to the initial clearing result with safety constraint, and C ' is the total cost of electricity purchased according to the optimized clearing result with safety constraint;
judging threshold K according to preset absolute cost change 5 And a relative cost change discrimination threshold K 6 If Z' > K 5 And Z "< K 6 Meanwhile, after the limit of the branch or the section is adjusted, the increase of the power generation cost is avoided, and a safety constraint optimization clearing result is issued, otherwise, a safety constraint initial clearing result is issued.
7. The method for real-time spot market blocking adjustment of power generation side centralized bidding according to claim 6, wherein the total cost of electricity purchased based on the initial clearing result without safety constraints
The total cost of the electricity purchase obtained according to the initial clearing result with the safety constraint
The total cost of the electricity purchase obtained by optimizing the clearing result according to the safety constraintWherein p' i,t Constrained unit plan for time period t, e', for unit i obtained when market clearing taking security constraints into account again i,t The node electricity price of the constrained unit i in the period t is obtained when the market taking the safety constraint into consideration is cleared again.
8. A real-time spot market blocking adjustment system for power generation side centralized bidding, comprising: the system comprises an initial market clearing module, a first judging module, a second judging module, a relaxation analysis calculating module, an optimization market clearing module, a comparison judging module, a first clearing result issuing module and a second clearing result issuing module, wherein:
an initial market clearing module: the method comprises the steps of respectively carrying out market clearing without considering safety constraint and market clearing with considering safety constraint to obtain an unconstrained initial clearing result and a safe constrained initial clearing result, wherein the unconstrained initial clearing result comprises an unconstrained unit plan, an unconstrained system power price and unconstrained plan power flows of branches and sections, and the safe constrained initial clearing result comprises a constrained unit plan, constrained unit node power prices and constrained plan power flows of branches and sections;
a first judging module: the method comprises the steps of judging whether the constraint planned power flow of a branch and a section is out of limit or not, and if not, entering a first clearing result release module; if yes, entering a second judging module;
and a second judging module: the system comprises a first clearing result issuing module, a relaxation analysis calculation module, a first clearing result issuing module, a second clearing result issuing module, a relaxation analysis calculation module and a first clearing result issuing module, wherein the first clearing result issuing module is used for judging whether the moment that the market electricity purchasing cost is increased due to the excessive regulation of part units exists or not;
a relaxation analysis calculation module: the method comprises the steps of analyzing and calculating a loose branch or section and time thereof;
the specific process for judging whether the moment that the excessive regulation of the partial units causes the increase of the market electricity purchasing cost exists is as follows:
for the moment of constraint planned power flow out-of-limit with branches and sections, the change rate of the market electricity purchasing cost caused by the safety constraint at the moment is calculated respectively, and the calculation formula is as follows:
wherein N is the number of units participating in real-time spot market, v' t For the change rate of the cost of the commercial power purchase caused by the safety constraint of the out-of-limit time t, p' i,t For unit i in time periodt constrained unit plan, p i,t Unconstrained crew planning for crew i during time period t, e' i,t Node electricity price of constrained unit i in period t, e t The electricity price is the unconstrained system;
if v 'at time t' t Is larger than a first preset threshold value K 1 Setting the time T as the time of increasing the market electricity purchasing cost, counting the number of the time of increasing the market electricity purchasing cost as T ', analyzing and calculating a loose branch or section and the time thereof if T ' is larger than 0, and issuing a safety constraint initial clearing result if T ' is 0;
if T' is greater than 0, the process of analyzing and calculating the relaxed branch or section and the moment thereof is specifically as follows:
for each out-of-limit branch or section l in each moment in T', respectively finding out a market machine set with machine set lifting force favorable for reducing out-of-limit degree, sorting according to the absolute value of sensitivity from small to large, and screening out that the absolute value of sensitivity is smaller than a second preset threshold value K 2 First set A of units t,l ；
Calculating the cost change delta C 'of each market machine set at each moment in T' t,i ＝p′ i,t e′ i,t -p i,t e t Screening out that the cost variation is larger than a third preset threshold value K 3 Second set of units B t ；
A second set B of units for each instant in T t Calculating a first set A of units corresponding to each out-of-limit branch or section t,l Is intersected to obtain U t,l ；
If U t,l If the space is not empty, taking the time t of the branch or the section l as a relaxation object, adjusting the limit of the branch or the section, and carrying out market clearing again by considering safety constraint; if U t,l If the result is an empty set, a security constraint initial clearing result is issued;
and (5) optimizing a market clearing module: adjusting the limit of the loose branch or section, and carrying out market clearing considering safety constraint again to obtain a safety constraint optimizing clearing result;
and the comparison and judgment module is used for: the method comprises the steps of comparing a safety constraint optimized clearing result with a safety constraint initial clearing result, judging whether the increase of the market purchase cost is avoided after the limit of a branch or a section is adjusted, if yes, entering a first clearing result release module, otherwise, entering a second clearing result release module;
the first clear result issuing module: the method is used for issuing an initial clearing result with safety constraint;
the second clear result issuing module: the method is used for issuing the security constraint optimization clearing result.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108711890A (en) * | 2018-06-27 | 2018-10-26 | 广东电网有限责任公司 | Ahead market goes out clearing method, system, device and computer readable storage medium |
| CN110649598A (en) * | 2019-09-11 | 2020-01-03 | 新奥数能科技有限公司 | Method and system for regulating node electricity price by virtual power plant in area |
| CN110874692A (en) * | 2019-11-05 | 2020-03-10 | 中国南方电网有限责任公司 | Alternating current-direct current hybrid regional power grid spot market clearing calculation optimization method and device |
| CN112288490A (en) * | 2020-11-04 | 2021-01-29 | 国网湖南省电力有限公司 | Method and system for clearing units with different power generation costs in electric power spot market |
| 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 |
-
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- 2021-09-03 CN CN202111034524.9A patent/CN113744035B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108711890A (en) * | 2018-06-27 | 2018-10-26 | 广东电网有限责任公司 | Ahead market goes out clearing method, system, device and computer readable storage medium |
| CN110649598A (en) * | 2019-09-11 | 2020-01-03 | 新奥数能科技有限公司 | Method and system for regulating node electricity price by virtual power plant in area |
| CN110874692A (en) * | 2019-11-05 | 2020-03-10 | 中国南方电网有限责任公司 | Alternating current-direct current hybrid regional power grid spot market clearing calculation optimization method and device |
| CN112288490A (en) * | 2020-11-04 | 2021-01-29 | 国网湖南省电力有限公司 | Method and system for clearing units with different power generation costs in electric power spot market |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 面向现货市场出清的 条件断面约束模型化处理方法;吴云亮 等;《电网技术》;20200831;2819-2828 * |
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