CN114006412B - Method, system, equipment and storage medium for correcting pre-clearing result of regional power grid - Google Patents

Method, system, equipment and storage medium for correcting pre-clearing result of regional power grid Download PDF

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CN114006412B
CN114006412B CN202111275304.5A CN202111275304A CN114006412B CN 114006412 B CN114006412 B CN 114006412B CN 202111275304 A CN202111275304 A CN 202111275304A CN 114006412 B CN114006412 B CN 114006412B
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power grid
data
regional power
branch
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CN114006412A (en
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吕闫
李理
黄海煜
於益军
罗卫华
罗雅迪
夏少连
路轶
张国芳
石上丘
李立新
李劲松
许丹
戴赛
吴建斌
韩巍
王淼
郎燕生
马晓忱
王少芳
张印
孙略
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
State Grid Sichuan Electric Power Co Ltd
Economic and Technological Research Institute of State Grid Shanxi Electric Power Co Ltd
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China Electric Power Research Institute Co Ltd CEPRI
State Grid Sichuan Electric Power Co Ltd
Economic and Technological Research Institute of State Grid Shanxi Electric Power Co Ltd
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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
    • H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
    • 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
    • H02J3/004—Generation forecast, e.g. methods or systems for forecasting future energy generation
    • 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
    • H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
    • H02J3/0075—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source according to economic or energy efficiency considerations, e.g. economic dispatch
    • 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
    • H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
    • H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
    • 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
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
    • 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
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]

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  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The invention belongs to the field of electric power automation, and discloses a method, a system, equipment and a storage medium for correcting a pre-clearing result of a regional power grid, wherein the pre-clearing result of the regional power grid is obtained; according to the pre-clearing result of the regional power grid, obtaining planned output data of each unit, state data of each unit, out-of-limit data of each branch, heavy load data of each branch, out-of-limit data of each section and heavy load data of each section in the regional power grid; and solving a preset pre-clearing result safety correction model according to the planned output data of each unit, the state data of each unit, the out-of-limit data of each branch, the heavy load data of each branch, the out-of-limit data of each section and the heavy load data of each section in the regional power grid to obtain a correction result, and correcting the pre-clearing result of the regional power grid according to the correction result. The method effectively reduces the out-of-limit condition of the corrected heavy-load branch or section, can effectively solve the out-of-limit condition which cannot be overcome by means of force adjustment, realizes quick solution, and improves the correction speed.

Description

Method, system, equipment and storage medium for correcting pre-clearing result of regional power grid
Technical Field
The invention belongs to the field of electric power automation, and relates to a method, a system, equipment and a storage medium for correcting a pre-clearing result of a regional power grid.
Background
With the deep reformation of the power market, the regional power grid in the future adopts a running mode of 'two-stage market and three-stage scheduling', and each stage of scheduling is responsible for safe running work of the corresponding regional power grid according to respective responsibility. In the electric power spot market environment, the operation mode of a regional power grid is determined by the market, the regional power grid has complicated and changeable tidal current and high uncertainty, the network blockage caused by unreasonable power generation plans is avoided, the influence on the market benefits of related market main bodies caused by the network blockage is solved subsequently, the spot market clearing results before the date need to be uniformly and safely checked by different centers, and the unreasonable pre-clearing power generation plans are corrected. The active power correction of the power generation plan is usually applied to the process of making the power generation plan and clearing the market of a regional power grid dispatching main body, the active power correction can be adopted in the day-ahead and real-time stages, the active power correction mainly comprises a reverse equivalent pairing adjustment method and a linear programming method based on sensitivity, an adjustment object is selected by the reverse equivalent pairing adjustment method according to the active sensitivity of a node pair out-of-limit branch (section), and units which are respectively adjusted up and down are selected from a plurality of units. The linear programming rule is to add the safety constraint found by the check into the power generation plan safety constraint model again, repeat iteration to obtain a unit output plan meeting the safety constraint, or to adopt the linear programming model which performs minimum modification on the original plan output, increase the out-of-limit found by the safety check, and calculate the modification quantity on the original plan.
The greatest difference between the work of safely correcting the pre-clearing result of each province, which is carried out by a regional power grid regulation and control mechanism in the market mode, and the conventional safety correction is that the pre-clearing safety correction is used for adjusting the electric power transaction result of other dispatching mechanisms, the original unit output result needs to be kept as much as possible, and the output result is used as the operation basis of a series of transactions of subsequent province transactions and auxiliary service transactions, so that the absolute safety of the operation mode provided by the result is ensured. Therefore, under the condition that the out-of-limit cannot be eliminated only by modifying the output value of the unit, the optimization adjustment of the startup and shutdown plan can be carried out in a certain unit set. In addition, the pre-clearing safety correction result of the regional power grid needs to be transmitted back to each province as soon as possible, starting preparation is made, and the timeliness of solving is emphasized.
Based on this, the chinese patent application: CN108270248A, which provides an active safety correction control method based on quasi-steady-state sensitivity analysis, and proposes a concept of static safety distance, according to the pre-clearing result of the power market, the static safety distance of each uncorrected time period is calculated, and according to the obtained safety distance sensitivity, the adjusting capability of the computer group is calculated, so as to calculate the correction value of the power generation plan of the machine group at the current correction time period. However, the method determines an increased output unit queue and a decreased output unit queue according to the unit adjusting capacity, performs an equal quantity reverse pairing principle on the two queues to form a unit adjusting pair, and then performs correction solving. The correction method is easy to obtain results generally, but new out-of-limit and heavy load can be caused, a plurality of constraint conditions are difficult to meet simultaneously under the complex out-of-limit condition, only an out-of-limit line set is considered in the correction process, a heavy load equipment set close to the out-of-limit is not considered, the condition that the corrected heavy load degree line is out-of-limit can be caused, and the adjustment times of the power generation plan are increased.
Disclosure of Invention
The present invention is directed to overcome the above-mentioned shortcomings in the prior art, and provides a method, a system, a device and a storage medium for correcting a pre-clearing result of a local power grid.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
in a first aspect of the present invention, a method for correcting a pre-clearing result of a regional power grid includes the following steps:
acquiring a regional power grid pre-clearing result;
according to the pre-clearing result of the regional power grid, obtaining planned output data of each unit, state data of each unit, out-of-limit data of each branch, heavy load data of each branch, out-of-limit data of each section and heavy load data of each section in the regional power grid;
and solving a preset pre-clearing result safety correction model according to the planned output data of each unit, the state data of each unit, the out-of-limit data of each branch, the heavy load data of each branch, the out-of-limit data of each section and the heavy load data of each section in the regional power grid to obtain a correction result, and correcting the pre-clearing result of the regional power grid according to the correction result.
The method for correcting the pre-clearing result of the regional power grid is further improved in that:
the pre-clearing result safety correction model is constructed by taking minimum pre-clearing result regulating quantity of a regional power grid as an optimization target and taking upper and lower limit output constraints, loose variable constraints, power balance constraints, network safety constraints, tie line plan constraints, unit node climbing constraints and standby constraints as constraint conditions.
The optimization target of the pre-clearing result security correction model is as follows:
Figure BDA0003329157360000031
wherein minimize () is a minimization function, t is a time period, nUnBus is the number of unit nodes,
Figure BDA0003329157360000032
for the adjustment of the output of the unit node i in the time period t,
Figure BDA0003329157360000033
for the output of the unit node i in the time interval t, the quantity of regulation, V l Set of out-of-limit and heavy-duty branches, V section For the collection of out-of-limit and heavy-load sections, VG bk For the necessary set of units, VG ttk To switch on the set of units for shutdown, VG ktt Set of rotatable shutdown units for startup, slack l,t Branch relaxation variable, slack, for branch l at time period t s,t Is the section relaxation variation of the section s in the time period t,
Figure BDA0003329157360000034
is a unit G i At the state of the unit for the time period t,
Figure BDA0003329157360000035
is a unit G i In the unit state of the time interval t +1, the value is 0 or 1,0 is shut down, 1 is started up, and L is i Adjusting a penalty factor, R, for the output of a unit node i l Penalty factor for active regulation of slack, M, for branch l s A penalty factor for the active adjustment relaxation amount of the section s,
Figure BDA0003329157360000036
is a unit G i The penalty factor for the outage of (a),
Figure BDA0003329157360000037
is a unit G i The power-on penalty factor of.
The output adjustment penalty factor L of the unit node i i According to the preset regulation priority setting of the unit node i, the higher the preset regulation priority of the unit node i is, the higher the output adjustment penalty factor L of the unit node i is i The smaller; unit G i Is a shutdown penalty factor
Figure BDA0003329157360000041
According to unit G i Preset shutdown priority setting of unit G i The higher the preset shutdown priority, the higher the unit G i Is a shutdown penalty factor
Figure BDA0003329157360000042
The smaller; unit G i Start-up penalty factor of
Figure BDA0003329157360000043
According to unit G i Preset start-up priority setting of unit G i The higher the preset starting priority, the unit G i Start-up penalty factor of
Figure BDA0003329157360000044
The smaller.
The unit G i Is a shutdown penalty factor
Figure BDA0003329157360000045
Unit G i Start-up penalty factor of
Figure BDA0003329157360000046
Branch l active regulation relaxation amount penalty factor R l And a section s active regulation relaxation amount penalty factor M s All are greater than the output adjustment penalty factor L of the unit node i i 。
And when the preset pre-clearing result safety correction model is solved, a mixed integer programming solver is adopted to solve the preset pre-clearing result safety correction model.
In a second aspect of the present invention, a system for correcting a pre-clearing result of a regional power grid includes:
the acquisition module is used for acquiring the pre-clearing result of the regional power grid;
the data determination module is used for obtaining planned output data of each unit, state data of each unit, out-of-limit data of each branch, heavy load data of each branch, out-of-limit data of each section and heavy load data of each section in the regional power grid according to the pre-clearing result of the regional power grid;
and the correction module is used for solving a preset pre-clearing result safety correction model according to the planned output data of each unit, the state data of each unit, the out-of-limit data of each branch, the heavy load data of each branch, the out-of-limit data of each section and the heavy load data of each section in the regional power grid, obtaining a correction result and correcting the pre-clearing result of the regional power grid according to the correction result.
The regional power grid pre-clearing result correction system is further improved in that:
the pre-clearing result safety correction model is constructed by taking minimum adjustment quantity of the pre-clearing result of the regional power grid as an optimization target and taking upper and lower limit constraints of unit node output, relaxation variable constraints, power balance constraints, network safety constraints, tie line plan constraints, unit node climbing constraints and standby constraints as constraint conditions.
In a third aspect of the present invention, a computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the method for correcting the pre-clearing result of the regional power grid when executing the computer program.
In a fourth aspect of the present invention, a computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement the steps of the method for correcting the pre-clearing result of the regional power grid.
Compared with the prior art, the invention has the following beneficial effects:
the method for correcting the pre-clearing result of the regional power grid obtains the planned output data of each unit, the state data of each unit, the out-of-limit data of each branch, the heavy load data of each branch, the out-of-limit data of each section and the heavy load data of each section in the regional power grid according to the pre-clearing result of the regional power grid, solves a preset pre-clearing result safety correction model according to the data to obtain a correction result, corrects the pre-clearing result of the regional power grid according to the correction result, and realizes the safety correction of the pre-clearing result of the regional power grid. Based on the out-of-limit data of each branch, the heavy load data of each branch, the out-of-limit data of each section and the heavy load data of each section, the two conditions of out-of-limit and heavy load are fully considered, and the condition that the corrected heavy load branch or section is out-of-limit is effectively reduced. In addition, the running states of the units are fully considered by combining the state data of the units, the running states of the units are brought into a pre-clearing result correction scheme, the out-of-limit condition which cannot be overcome by only force adjustment can be effectively solved, the rapid solution of safety correction is realized, the correction result can be obtained by only one-time solution, and the correction speed is greatly improved.
Drawings
FIG. 1 is a flow chart of a method for correcting pre-clearing results of a regional power grid according to the present invention;
fig. 2 is a block diagram of a structure of a correction system for pre-clearing result of a regional power grid according to the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or 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.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, in an embodiment of the present invention, a method for correcting a pre-clearing result of a regional power grid is provided, and specifically, a method for safely correcting a pre-clearing result of a regional power grid in consideration of unit combination adjustment is provided. The correction method aims at the requirement that a regional power grid dispatching center carries out combined safety check on the pre-clearing result of each provincial regional power grid and then carries out quick adjustment on the unreasonable clearing result of each provincial under the regional power grid operation mode of 'two-stage market and three-stage dispatching', integrates the traditional unit combination and unit safety constraint dispatching function, finally forms a more reasonable regional power grid operation mode, and provides basic conditions for ordered operation of the intra-provincial and inter-provincial markets. Specifically, the method for correcting the pre-clearing result of the regional power grid comprises the following steps.
S1: and obtaining a pre-clearing result of the regional power grid.
Specifically, the regional power grid pre-clearing result is corrected, and as a subsequent step of security check in the pre-clearing stage, the regional power grid pre-clearing result needs to be acquired from the security check application. Specifically, in this embodiment, the regional power grid pre-clearing result is obtained from the regulation and control automation system with the regional power grid market clearing in the future as an implementation object.
S2: and obtaining planned output data of each unit in the regional power grid, out-of-limit information of each branch, heavy load information of each branch, out-of-limit information of each section and heavy load information of each section according to the pre-clearing result of the regional power grid.
Specifically, the method comprises the steps of obtaining the load flow out-of-limit and heavy load conditions of the regional power grid from the security check application, and extracting data from the pre-clearing result of the regional power grid, wherein the specific data comprises the following steps: 1) Planned output information of the unit in each time period; 2) Branch tide out-of-limit and heavy load information in each time period; 3) The out-of-limit and heavy load information of the section and the connecting line in each time period; 4) Network topology change period information; 5) Section information, section intelligent quota and section member information; 6) Tie line information and tie line member information; 7) The unit operation parameter information comprises data such as minimum technical output, maximum technical output, whether to participate in adjustment, whether to change the start-up and shut-down state and the like; 8) Spare constraint information, etc. And further determining planned output data of each unit, state data of each unit, out-of-limit data of each branch, heavy load data of each branch, out-of-limit data of each section and heavy load data of each section in the regional power grid according to the specific data, wherein the data are data sets of time intervals, and in the embodiment, 96 time intervals are divided every day by taking days as a unit.
The planned output data of each unit can be directly obtained through the planned output information of the units in each time period. The state data of each unit comprises a necessary unit, a stop rotatable unit, a start rotatable unit and a stop unit. Specifically, the output plan value and the maximum value of each unit are determinedDividing each unit into corresponding set VG sets of necessary units according to information such as small technical output, maximum technical output, whether to participate in adjustment, whether the start-stop state can be changed and the like bk Set VG of starting machine set capable of being turned on during shutdown ttk Set VG of starting-up rotatable shutdown machine set ktt And a set of shutdown units VG bt And determining the state data of each unit. The out-of-limit data of each branch, the heavy load data of each branch, the out-of-limit data of each section and the heavy load data of each section can be obtained by calculation in the existing calculation mode according to the out-of-limit and heavy load information of each time period branch, the out-of-limit and heavy load information of each time period section and tie line, the information of network topology change time period, the section information, the intelligent limit of the section and the member information of the section, the information of the tie line and the member information of the tie line, the information of unit operation parameters and the spare constraint information.
S3: and solving a preset pre-clearing result safety correction model according to the planned output data of each unit, the state data of each unit, the out-of-limit data of each branch, the heavy load data of each branch, the out-of-limit data of each section and the heavy load data of each section in the regional power grid to obtain a correction result, and correcting the pre-clearing result of the regional power grid according to the correction result.
Specifically, the pre-clearing result safety correction model is constructed by taking minimum adjustment quantity of the pre-clearing result of the regional power grid as an optimization target and taking upper and lower output limit constraints of a unit node, relaxation variable constraints, power balance constraints, network safety constraints, tie line plan constraints, unit node climbing constraints and standby constraints as constraint conditions.
In this embodiment, considering that a plurality of units are mounted on the same calculation bus in the actual calculation process, and the quasi-steady-state sensitivities of the units to the same branch are the same, only the unit node output adjustment amount of the unit mounted in the pre-clearing result safety correction model is considered in the construction of the pre-clearing result safety correction model. Specifically, in a possible embodiment, the optimization goal of the pre-clearing result security correction model is as follows:
Figure BDA0003329157360000081
wherein minimize () is a minimization function, t is a time period, nUnBus is the number of unit nodes,
Figure BDA0003329157360000082
for the adjustment of the output of the unit node i in the time period t,
Figure BDA0003329157360000083
for the set node i in the output of the time t, the adjustment variable V l For sets of out-of-limit branches and over-loaded branches, V section For the collection of overrun and heavy-duty sections, VG bk For the necessary set of units, VG ttk VG for turning on the machine set for stopping ktt Slack, a rotatable set of shut-down units for starting up l,t For the branch l branch relaxation variable in time period t, slack s,t Is the section relaxation variation of the section s in the time period t,
Figure BDA0003329157360000084
is a unit G i At the state of the unit for the time period t,
Figure BDA0003329157360000085
is a unit G i In the unit state of the time interval t +1, the value is 0 or 1,0 is shut down, 1 is started up, and L is i Adjusting a penalty factor, R, for the output of a unit node i l Penalty factor for active regulation of relaxation quantity for branch l, M s A penalty factor for the active adjustment relaxation amount of the section s,
Figure BDA0003329157360000086
is a unit G i The penalty factor for the outage of (1),
Figure BDA0003329157360000087
is a unit G i The power-on penalty factor of.
Preferably, in a possible implementation, the output of the unit node i adjusts the penalty factor L i Setting of the set node i according to its preset regulation priorityThe higher the preset regulation priority is, the higher the output regulation penalty factor L of the unit node i i The smaller; unit G i Is a shutdown penalty factor
Figure BDA0003329157360000091
According to unit G i Preset shutdown priority setting of unit G i The higher the preset shutdown priority, the higher the unit G i Is a shutdown penalty factor
Figure BDA0003329157360000092
The smaller; unit G i Turn-on penalty factor of
Figure BDA0003329157360000093
According to unit G i Preset start-up priority setting of unit G i The higher the preset starting priority, the unit G i Turn-on penalty factor of
Figure BDA0003329157360000094
The smaller. Based on the method, the priority ranking of the output adjustment of the unit nodes is realized, and the unit nodes convenient to adjust can be set to perform adjustment preferentially according to the specific conditions of different unit nodes. And, can be supplied to the unit G i Is a penalty factor for downtime
Figure BDA0003329157360000095
And unit G i Start-up penalty factor of
Figure BDA0003329157360000096
Different values are given to realize the setting of the starting and stopping sequence of the unit nodes, different correction preferences can be realized, and different requirements of users are met.
Preferably, in a possible embodiment, said group G i Is a penalty factor for downtime
Figure BDA0003329157360000097
Unit G i Start-up penalty factor of
Figure BDA0003329157360000098
Branch l active regulation relaxation amount penalty factor R l And section s active regulation relaxation quantity penalty factor M s All are greater than the output adjustment penalty factor L of the unit node i i . Specifically, the unit G i Is a penalty factor for downtime
Figure BDA0003329157360000099
And unit G i Turn-on penalty factor of
Figure BDA00033291573600000910
Two penalty factors are set to be large, and a branch I active regulation relaxation amount penalty factor R l And section s active regulation relaxation amount penalty factor M s The penalty factor is also set to be large, wherein the unit G is described above i Is a shutdown penalty factor
Figure BDA00033291573600000911
Unit G i Turn-on penalty factor of
Figure BDA00033291573600000912
Branch l active regulation relaxation amount penalty factor R l Penalty factor M for active regulation relaxation quantity of sum section s s Set to be large relative to the penalty factor for the adjustment of the output of the unit node i, e.g. penalty factor L for the adjustment of the output of the unit node i i The value is 1, and in order to mitigate branch off-load conditions as much as possible with reduced start-up and shut-down, it is possible to set these penalty factors to values such as 10E3, 10E4 or 10E6, which may be set according to actual demand.
By mixing
Figure BDA00033291573600000913
And
Figure BDA00033291573600000914
the two penalty factors are set to be very large, so that a solver is guided to seek an optimal solution in the direction of eliminating the power grid operation risk only by adjusting the output of the unit node, and when the output of the unit node is not adjusted, the optimal solution is not obtainedThe method can ensure that the start-up and shutdown states of certain unit nodes are changed when the power grid is maintained to stably run. By adding a penalty factor R to the active regulation relaxation quantity of the branch l l And a section s active regulation relaxation amount penalty factor M s And the same setting is very large, the guide solver is used for solving the solution of all out-of-limit (heavy load) problems as far as possible, and the reliability of the solution is improved.
Specifically, in a possible implementation manner, the constraint of the upper and lower limits of the unit node output force is as follows:
Figure BDA0003329157360000101
Figure BDA0003329157360000102
G i ∈VG bk ,G tki ∈VG ttk ,G kti ∈VG ktt ,
U Gi,t ∈[0,1]
wherein, P i,max And P i,min The maximum technical output value and the minimum output value on the unit node i,
Figure BDA0003329157360000103
is the active output planned value P of the unit node i in the time period t G,max And P G,min For maximum and minimum technical output values, G, of each unit i E is set G i The information is mounted on a unit node i,
Figure BDA0003329157360000104
is a unit G tki At the state of the unit for the time period t,
Figure BDA0003329157360000105
is a unit G kti The crew state at time t.
Specifically, in one possible embodiment, the slack variable constraint is:
Figure BDA0003329157360000106
Figure BDA0003329157360000107
wherein, pl vio The more limited is the active power for branch l, pl ol Branch active capacity, ps, for branch l vio The more limit of active power, ps, of the cross section s ol The active load capacity of the section s is shown.
Specifically, in one possible implementation, the power balance constraint is:
Figure BDA0003329157360000108
through the power balance constraint, the active output upper regulating quantity of the regional power grid at each moment is equal to the active output lower regulating quantity.
Specifically, in a possible implementation manner, considering that only the active value is reduced in the safety correction process and the tidal current direction is not changed, both the lower limit of the branch and section correction constraints take values of 0, and the network safety constraints are:
Figure BDA0003329157360000111
Figure BDA0003329157360000112
wherein the content of the first and second substances,
Figure BDA0003329157360000113
value of active power for branch l during time period t, PL max For the maximum active value that branch i can carry,
Figure BDA0003329157360000114
the value of active flow through the section s for a time period t, PS max The unBus is a unit node set for the flow quota of the section s; alpha is alpha i,l,t Quasi-steady-state sensitivity value alpha of unit node i to branch l in time period t i,s,t And (4) the quasi-steady-state sensitivity value of the unit node i to the section s in the time t.
The quasi-steady-state sensitivity value of the unit node i to the section s in the time period t is obtained by superposing the quasi-steady-state sensitivity values of the unit nodes to the section members, and the calculation formula is as follows:
Figure BDA0003329157360000115
wherein alpha is i,l,t And the quasi-steady-state sensitivity value of the branch I of the section s to the unit node i in the time period t is represented, and the I belongs to the s and represents that the branch I is a member of the section s.
Specifically, in a possible embodiment, the regional tie plan is a result of cross-regional tie decomposition and is also a boundary condition for provincial pre-clearing, and the influence caused by tie plan adjustment is wider than the influence caused by single unit adjustment, so that the regional tie plan is guaranteed to be unchanged when the regional power grid performs multi-provincial combined pre-clearing result correction, and tie plan constraints can be expressed as:
Figure BDA0003329157360000116
wherein alpha is i,tie,t A quasi-steady-state sensitivity value of a unit node i to a tie line tie in a time period t, wherein the tie belongs to V tieline ，V tieline Is a collection of tie lines in a regional power grid. And the requirement of multi-provincial combined safety correction in the pre-clearing stage is met by setting the plan constraint of the connecting line.
The quasi-steady-state sensitivity value of the tie line tie of the unit node i in the time period t is obtained by superposing the quasi-steady-state sensitivity value of the unit node to the tie line members, and the calculation formula is as follows:
Figure BDA0003329157360000121
wherein alpha is i,l,t Representing the quasi-steady-state sensitivity value of a unit node i to a tie line tie branch member l in a time period t, representing that the branch l is a member of the tie line tie by belonging to the tie l And representing the member power distribution coefficient of the connecting line branch.
Specifically, in a possible implementation manner, the safety correction of the pre-clearing result of the regional power grid needs to correct the pre-clearing result of the continuous time period, and is limited by the climbing constraint of the unit, the output adjustment of the unit node also needs to satisfy the climbing constraint, and the climbing constraint of the unit node can be expressed as:
Figure BDA0003329157360000122
wherein the content of the first and second substances,
Figure BDA0003329157360000123
and
Figure BDA0003329157360000124
respectively representing units G i Up-hill rate and down-hill rate.
In particular, in one possible implementation, the backup constraints may be expressed as:
Figure BDA0003329157360000125
wherein, the first and the second end of the pipe are connected with each other,
Figure BDA0003329157360000126
is a unit G i Maximum technical contribution of, P spare The value of the reserve capacity is N, and the total number of the units participating in the regulation is N.
Specifically, based on the pre-clearing result safety correction model constructed in the process, planned output data of each unit, state data of each unit, out-of-limit data of each branch, heavy load data of each branch, out-of-limit data of each section and heavy load data of each section in the regional power grid are brought into the pre-clearing result safety correction model, output adjustment quantities of each unit node are obtained by solving the pre-clearing result safety correction model, and the output adjustment quantities are divided into upper output adjustment quantities and lower output adjustment quantities. Specifically, in a possible implementation manner, when the preset pre-cleaning result safety correction model is solved, a mixed integer programming solver is used for solving the preset pre-cleaning result safety correction model, so that the solving speed is increased, and the solving time is reduced.
And finally, correcting the regional power grid pre-clearing result according to the correction result. Specifically, the output adjustment amount of each unit node is distributed to the actual unit mounted to the actual unit, the output adjustment amount of the unit node is the output adjustment amount of the mounted unit for the unit node on which only one unit is mounted, and the output adjustment amount of each mounted unit is adjusted according to a certain power distribution principle by comprehensively considering the start-stop state, state change time, unit climbing rate and other constraint conditions of the units under the condition of the unit nodes on which a plurality of units are mounted.
In summary, according to the method for correcting the pre-clearing result of the regional power grid, the planned output data of each unit, the state data of each unit, the out-of-limit data of each branch, the heavy load data of each branch, the out-of-limit data of each section and the heavy load data of each section in the regional power grid are obtained according to the pre-clearing result of the regional power grid, a preset pre-clearing result safety correction model is solved according to the data to obtain a correction result, and then the pre-clearing result of the regional power grid is corrected according to the correction result, so that the safety correction of the pre-clearing result of the regional power grid is realized. Based on the out-of-limit data of each branch, the heavy-duty data of each branch, the out-of-limit data of each section and the heavy-duty data of each section, the two conditions of out-of-limit and heavy-duty are fully considered, the out-of-limit condition of the corrected heavy-duty branch or section is effectively reduced, the running state of each unit is fully considered by combining the state data of each unit, the running state of each unit is brought into the correction scheme of the pre-clearing result, the out-of-limit condition which cannot be overcome by output adjustment can be effectively solved, the rapid solution of safety correction is realized, the correction result can be obtained by only one-time solution, and the correction speed is greatly improved.
Aiming at the correction of the pre-clearing result, a new power generation plan safety correction strategy based on a safety constraint scheduling model with the minimum adjustment quantity is provided by the scholars, and the combination state of the set is further adjusted to eliminate the power flow out-of-limit by relaxing the unit output limit value constraint under the condition that the adjusted unit output cannot meet the regional power grid safety. However, the method uses the method of whether the upper and lower limits of the unit output have the slack quantity to judge whether the unit is changed in the starting and stopping states, the directly obtained unit power cannot meet the requirements that the power of the unit after starting is always larger than the minimum technical output, the power of the unit after stopping is always smaller than the minimum output, and extra secondary adjustment is needed, so the effect is not as good as that of the method of the invention.
The following are embodiments of the apparatus of the present invention that may be used to perform embodiments of the method of the present invention. For details of non-careless mistakes in the embodiment of the apparatus, please refer to the embodiment of the method of the present invention.
Referring to fig. 2, in a further embodiment of the present invention, a regional power grid pre-clearing result correction system is provided, which can be used to implement the above-mentioned method for correcting a regional power grid pre-clearing result.
The acquisition module is used for acquiring a regional power grid pre-clearing result; the data determination module is used for obtaining planned output data of each unit, state data of each unit, out-of-limit data of each branch, heavy load data of each branch, out-of-limit data of each section and heavy load data of each section in the regional power grid according to a pre-clearing result of the regional power grid; the correction module is used for solving a preset pre-clearing result safety correction model according to planned output data of each unit, state data of each unit, out-of-limit data of each branch, heavy load data of each branch, out-of-limit data of each section and heavy load data of each section in the regional power grid, obtaining a correction result and correcting the regional power grid pre-clearing result according to the correction result.
Specifically, in a possible implementation manner, the pre-clearing result safety correction model preset in the correction module is constructed by taking the minimum adjustment quantity of the pre-clearing result of the regional power grid as an optimization target and taking the upper and lower limits of the unit node output force constraint, the loose variable constraint, the power balance constraint, the network safety constraint, the tie line plan constraint, the unit node climbing constraint and the standby constraint as constraint conditions.
All relevant contents of each step related to the embodiment of the method for correcting the pre-clearing result of the regional power grid can be introduced to the functional description of the functional module corresponding to the system for correcting the pre-clearing result of the regional power grid in the embodiment of the present invention, and are not described herein again.
The division of the modules in the embodiments of the present invention is schematic, and is only a logical function division, and in actual implementation, there may be another division manner, and in addition, each functional module in each embodiment of the present invention may be integrated in one processor, or may exist alone physically, or two or more modules are integrated in one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
In yet another embodiment of the present invention, a computer device is provided that includes a processor and a memory for storing a computer program comprising program instructions, the processor for executing the program instructions stored by the computer storage medium. The Processor may be a Central Processing Unit (CPU), or may be other general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable gate array (FPGA) or other Programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc., which is a computing core and a control core of the terminal, and is specifically adapted to load and execute one or more instructions in a computer storage medium to implement a corresponding method flow or a corresponding function; the processor provided by the embodiment of the invention can be used for the operation of the correction method of the pre-clearing result of the regional power grid.
In yet another embodiment of the present invention, the present invention further provides a storage medium, specifically a computer-readable storage medium (Memory), which is a Memory device in a computer device and is used for storing programs and data. It is understood that the computer readable storage medium herein can include both built-in storage medium in the computer device and, of course, extended storage medium supported by the computer device. The computer-readable storage medium provides a storage space storing an operating system of the terminal. Also, one or more instructions, which may be one or more computer programs (including program code), are stored in the memory space and are adapted to be loaded and executed by the processor. It should be noted that the computer-readable storage medium may be a high-speed RAM memory, or may be a non-volatile memory (non-volatile memory), such as at least one disk memory. One or more instructions stored in the computer-readable storage medium may be loaded and executed by the processor to implement the corresponding steps of the method for correcting the pre-clearing result of the regional power grid in the above embodiments.
As will be appreciated by one skilled in the art, 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 has been 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: although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.

Claims (7)

1. A method for correcting pre-clearing results of a regional power grid is characterized by comprising the following steps:
obtaining a regional power grid pre-clearing result;
according to the pre-clearing result of the regional power grid, obtaining planned output data of each unit, state data of each unit, out-of-limit data of each branch, heavy load data of each branch, out-of-limit data of each section and heavy load data of each section in the regional power grid;
according to the planned output data of each unit, the state data of each unit, the out-of-limit data of each branch, the heavy load data of each branch, the out-of-limit data of each section and the heavy load data of each section in the regional power grid, solving a preset pre-clearing result safety correction model to obtain a correction result, and correcting the pre-clearing result of the regional power grid according to the correction result;
the pre-clearing result safety correction model is constructed by taking minimum adjustment quantity of the pre-clearing result of the regional power grid as an optimization target and taking upper and lower limit constraints of unit node output, relaxation variable constraints, power balance constraints, network safety constraints, tie line plan constraints, unit node climbing constraints and standby constraints as constraint conditions;
the optimization target of the pre-clearing result security correction model is as follows:
Figure FDA0004018327810000011
wherein minimize () is a minimization function, t is a time period, nUnBus is the number of unit nodes,
Figure FDA0004018327810000012
for the adjustment of the output of the unit node i in the time period t,
Figure FDA0004018327810000013
for the set node i under the output of time t, the adjustment quantity V l Set of out-of-limit and heavy-duty branches, V section For the collection of out-of-limit and heavy-load sections, VG bk For the set to be started, VG ttk VG for turning on the machine set for stopping ktt Set of rotatable shutdown units for startup, slack l,t Branch relaxation variable, slack, for branch l at time period t s,t Is the section relaxation variation of the section s in the time period t,
Figure FDA0004018327810000014
is a unit G i At the state of the unit for the time period t,
Figure FDA0004018327810000015
is a unit G i In the unit state of the time interval t +1, the value is 0 or 1,0 is shut down, 1 is started up, and L is i Adjusting a penalty factor, R, for the output of a unit node i l Penalty factor for active regulation of relaxation quantity for branch l, M s A penalty factor for the active adjustment relaxation amount of the section s,
Figure FDA0004018327810000021
is a unit G i The penalty factor for the outage of (a),
Figure FDA0004018327810000022
is a unit G i The power-on penalty factor of.
2. The method for correcting pre-clearing result of regional power grid according to claim 1, wherein the output of the unit node i adjusts a penalty factor L i According to the preset regulation priority setting of the unit node i, the higher the preset regulation priority of the unit node i is, the higher the output adjustment penalty factor L of the unit node i is i The smaller; unit G i Is a shutdown penalty factor
Figure FDA0004018327810000023
According to unit G i Preset shutdown priority setting of unit G i The higher the preset shutdown priority, the higher the unit G i Is a shutdown penalty factor
Figure FDA0004018327810000024
The smaller; unit G i Turn-on penalty factor of
Figure FDA0004018327810000025
According to unit G i Preset power-on priority settingGroup G i The higher the preset starting priority, the unit G i Start-up penalty factor of
Figure FDA0004018327810000026
The smaller.
3. The method for correcting the pre-clearing result of the regional power grid according to claim 1, wherein the unit G is a unit G i Is a penalty factor for downtime
Figure FDA0004018327810000027
Unit G i Start-up penalty factor of
Figure FDA0004018327810000028
Branch l active regulation relaxation amount penalty factor R l And a section s active regulation relaxation amount penalty factor M s All are greater than the output adjustment penalty factor L of the unit node i i 。
4. The method for correcting the pre-clearing result of the regional power grid according to claim 1, wherein when the preset pre-clearing result safety correction model is solved, a mixed integer programming solver is used for solving the preset pre-clearing result safety correction model.
5. A regional power grid early warning result correction system is characterized by comprising:
the acquisition module is used for acquiring the pre-clearing result of the regional power grid;
the data determining module is used for obtaining planned output data of each unit, state data of each unit, out-of-limit data of each branch, heavy load data of each branch, out-of-limit data of each section and heavy load data of each section in the regional power grid according to a pre-clearing result of the regional power grid;
the correction module is used for solving a preset pre-clearing result safety correction model according to planned output data of each unit, state data of each unit, out-of-limit data of each branch, heavy load data of each branch, out-of-limit data of each section and heavy load data of each section in the regional power grid to obtain a correction result and correcting the regional power grid pre-clearing result according to the correction result;
the pre-clearing result safety correction model is constructed by taking minimum adjustment quantity of the pre-clearing result of the regional power grid as an optimization target and taking upper and lower limit constraints of unit node output, relaxation variable constraints, power balance constraints, network safety constraints, tie line plan constraints, unit node climbing constraints and standby constraints as constraint conditions;
the optimization target of the pre-clearing result security correction model is as follows:
Figure FDA0004018327810000031
wherein minimize () is a minimization function, t is a time period, nUnBus is the number of unit nodes,
Figure FDA0004018327810000032
for the adjustment of the output of the unit node i in the time period t,
Figure FDA0004018327810000033
for the set node i under the output of time t, the adjustment quantity V l Set of out-of-limit and heavy-duty branches, V section For the collection of out-of-limit and heavy-load sections, VG bk For the necessary set of units, VG ttk VG for turning on the machine set for stopping ktt Set of rotatable shutdown units for startup, slack l,t For the branch l branch relaxation variable in time period t, slack s,t Is the section relaxation variation of the section s in the time period t,
Figure FDA0004018327810000034
is a unit G i At the state of the unit for the time period t,
Figure FDA0004018327810000035
is a unit G i At time period t +1The unit state of (1) is taken as 0 or 1,0 is shut down, 1 is started up, and L is i Adjusting a penalty factor, R, for the output of a unit node i l Penalty factor for active regulation of relaxation quantity for branch l, M s A penalty factor for the active regulation relaxation amount of the section s,
Figure FDA0004018327810000036
is a unit G i The penalty factor for the outage of (a),
Figure FDA0004018327810000037
is a unit G i The power-on penalty factor of.
6. A computer arrangement comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor when executing the computer program performs the steps of the method for correcting pre-emption of a regional power grid according to any one of claims 1 to 4.
7. A computer-readable storage medium, in which a computer program is stored, wherein the computer program, when being executed by a processor, implements the steps of the method for correcting pre-emption of a regional power grid according to any one of claims 1 to 4.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2011203324A1 (en) * 2003-11-24 2011-07-28 Accenture Global Services Limited Spot market clearing
CN106953354A (en) * 2017-03-10 2017-07-14 国网山东省电力公司经济技术研究院 Consider the method for Unit Commitment containing wind-powered electricity generation of voltage support
CN107658891A (en) * 2017-10-27 2018-02-02 国网四川省电力公司天府新区供电公司 A kind of idle work optimization pre-control for considering main transformer on-load voltage regulation locking and bearing calibration
CN112103943A (en) * 2020-08-13 2020-12-18 云南电网有限责任公司 Safety checking method and device for delivery of electric power spot market in the day-ahead and storage medium

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2011203324A1 (en) * 2003-11-24 2011-07-28 Accenture Global Services Limited Spot market clearing
CN106953354A (en) * 2017-03-10 2017-07-14 国网山东省电力公司经济技术研究院 Consider the method for Unit Commitment containing wind-powered electricity generation of voltage support
CN107658891A (en) * 2017-10-27 2018-02-02 国网四川省电力公司天府新区供电公司 A kind of idle work optimization pre-control for considering main transformer on-load voltage regulation locking and bearing calibration
CN112103943A (en) * 2020-08-13 2020-12-18 云南电网有限责任公司 Safety checking method and device for delivery of electric power spot market in the day-ahead and storage medium

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
电力现货市场出清边界数据管理系统设计与实现;李秀峰等;《电力大数据》;20210731;全文 *

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