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:
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;
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 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:
wherein minimize () is a minimization function, t is a time period, nUnBus is the number of unit nodes,
for the adjustment of the output of the unit node i in the time period t,
for the output of the unit node i in the time interval t, the quantity of regulation, V
lFor sets of out-of-limit branches and over-loaded branches, V
sectionFor the collection of overrun and heavy-duty sections, VG
bkFor the set to be started, VG
ttkVG for turning on the machine set for stopping
kttSlack, a rotatable set of shut-down units for starting up
l,tFor the branch l branch relaxation variable in time period t, Slack
s,tIs the section relaxation variation of the section s in the time period t,
is a unit G
iAt the state of the unit for the time period t,
is a unit G
iIn the unit state of the time interval t +1, the value is 0 or 1, 0 is shutdown, 1 is startup, and L is
iAdjusting a penalty factor, R, for the output of a unit node i
lPenalty factor for active regulation of relaxation quantity for branch l, M
sA penalty factor for the active adjustment relaxation amount of the section s,
is a unit G
iThe penalty factor for the outage of (1),
is a unit G
iThe power-on penalty factor of.
The output adjustment penalty factor L of the unit node i
iAccording 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
iThe smaller; unit G
iIs a penalty factor for downtime
According to unit G
iPreset shutdown priority setting of unit G
iThe higher the preset shutdown priority, the higher the unit G
iIs a penalty factor for downtime
The smaller; unit G
iTurn-on penalty factor of
According to unit G
iPreset start-up priority setting of unit G
iThe higher the preset starting priority, the higher the unit G
iTurn-on penalty factor of
The smaller.
The unit G
iIs a penalty factor for downtime
Unit G
iTurn-on penalty factor of
Branch l active regulation relaxation amount penalty factor R
lAnd a section s active regulation relaxation amount penalty factor M
sAll 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 to obtain a correction result and correcting the regional power grid pre-clearing result 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.
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, 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 at each time interval; 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, each unit is divided into corresponding set VG of the necessary units according to the planned output value of each unit and information such as minimum technical output, maximum technical output, whether to participate in adjustment, whether the start-stop state can be changed and the likebkSet VG of starting machine set capable of being turned on during shutdownttkSet VG of starting-up rotatable shutdown machine setkttAnd a set of shutdown units VGbtAnd 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:
wherein minimize () is a minimization function, t is a time period, nUnBus is the number of unit nodes,
for the adjustment of the output of the unit node i in the time period t,
for the output of the unit node i in the time interval t, the quantity of regulation, V
lFor sets of out-of-limit branches and over-loaded branches, V
sectionFor the collection of overrun and heavy-duty sections, VG
bkFor the set to be started, VG
ttkVG for turning on the machine set for stopping
kttSlack, a rotatable set of shut-down units for starting up
l,tFor the branch l branch relaxation variable in time period t, Slack
s,tIs the section relaxation variation of the section s in the time period t,
is a unit G
iAt the state of the unit for the time period t,
is a unit G
iIn the unit state of the time interval t +1, the value is 0 or 1, 0 is shutdown, 1 is startup, and L is
iAdjusting a penalty factor, R, for the output of a unit node i
lPenalty factor for active regulation of relaxation quantity for branch l, M
sA penalty factor for the active adjustment relaxation amount of the section s,
is a unit G
iThe penalty factor for the outage of (1),
is a unit G
iThe power-on penalty factor of.
Preferably, in a possible implementation, the output of the unit node i is adjusted by a penalty factor L
iAccording 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
iThe smaller; unit G
iIs a penalty factor for downtime
According to unit G
iPreset shutdown priority setting of unit G
iThe higher the preset shutdown priority, the higher the unit G
iIs a penalty factor for downtime
The smaller; unit G
iTurn-on penalty factor of
According to unit G
iPreset start-up priority setting of unit G
iThe higher the preset starting priority, the higher the unit G
iTurn-on penalty factor of
The smaller. Based on the method, the priority ranking of the output adjustment of the unit nodes is realized, and the unit which is convenient to adjust can be set to be adjusted preferentially according to the specific conditions of different unit nodes. And, can be supplied to the unit G
iIs a penalty factor for downtime
And unit G
iTurn-on penalty factor of
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
iIs a penalty factor for downtime
Unit G
iTurn-on penalty factor of
Branch l active regulation relaxation amount penalty factor R
lAnd a section s active regulation relaxation amount penalty factor M
sAll are greater than the output adjustment penalty factor L of the unit node i
i. Specifically, the unit G
iIs a penalty factor for downtime
And unit G
iTurn-on penalty factor of
Two penalty factors are set to be large, and branch l has active power regulation relaxation amount penalty factor R
lPenalty factor M for active regulation relaxation quantity of sum section s
sThe penalty factor is also set to be large, wherein the unit G is described above
iIs a penalty factor for downtime
Unit G
iTurn-on penalty factor of
Branch l active regulation relaxation amount penalty factor R
lPenalty factor M for active regulation relaxation quantity of sum section s
sSet 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
iAssigned a value of 1 in order to minimize start-up and shut-downTo reduce the branch violation overload situations, the penalty factors may be set to values such as 10E3, 10E4, or 10E6, which may be set according to actual requirements.
By mixing
And
the two penalty factors are set to be large, so that a solver is guided to seek an optimal solution in the direction of removing the power grid operation risk only by adjusting the output of the unit node, and when the power grid can not be maintained to stably operate only by adjusting the output of the unit node, the on-off state of some unit nodes can be changed. By adding a penalty factor R to the active regulation relaxation quantity of the branch l
lAnd a section s active regulation relaxation amount penalty factor M
sAnd 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:
Gi∈VGbk,Gtki∈VGttk,Gkti∈VGktt,
UGi,t∈[0,1]
wherein, P
i,maxAnd P
i,minThe maximum technical output value and the minimum output value on the unit node i,
is the active output planned value P of the unit node i in the time period t
G,maxAnd P
G,minFor maximum and minimum technical output values, G, of each unit
iE.g. busi as unit G
iThe information is mounted on a unit node i,
is a unit G
tkiAt the state of the unit for the time period t,
is a unit G
ktiThe crew state at time t.
Specifically, in one possible embodiment, the slack variable constraint is:
wherein, PlvioThe more limited is the active power for branch l, PlolBranch active capacity, Ps, for branch lvioThe more limit of active power, Ps, of the cross section solThe active load capacity of the section s is shown.
Specifically, in one possible implementation, the power balance constraint is:
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:
wherein the content of the first and second substances,
value of active power for branch l during time period t, PL
maxFor the maximum active value that branch i can carry,
the value of active flow through the section s for a time period t, PS
maxThe unBus is a unit node set; alpha is alpha
i,l,tFor the quasi-steady-state sensitivity value, alpha, of the unit node i to the branch l in the time period t
i,s,tAnd (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 at the time 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:
wherein alpha isi,l,tAnd the quasi-steady-state sensitivity value of the branch l of the section s to the unit node i in the time period t is represented, and l epsilon s represents that the branch l 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 an influence caused by tie plan adjustment is wider than an influence caused by single unit adjustment, so that the regional tie plan is ensured to be unchanged when the regional power grid performs multi-provincial combined pre-clearing result correction, and tie plan constraints can be expressed as:
wherein alpha isi,tie,tA 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 Vtieline,VtielineIs 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:
wherein alpha isi,l,tRepresenting 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 tielAnd 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 meet the climbing constraint, and the climbing constraint of the unit node can be expressed as:
wherein the content of the first and second substances,
and
respectively representing units G
iUp-hill rate and down-hill rate.
In particular, in one possible implementation, the backup constraint may be expressed as:
wherein the content of the first and second substances,
is a unit G
iMaximum technical contribution of, P
spareThe value of the reserve capacity is N, and the total number of the units participating in the regulation is N.
Specifically, the pre-clearing result safety correction model constructed based on the above process brings 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 into the pre-clearing result safety correction model, obtains output adjustment quantities of each unit node by solving the pre-clearing result safety correction model, and divides the output adjustment quantities 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 to solve the preset pre-cleaning result safety correction model, so as to improve the solving speed and reduce the solving time.
And finally, correcting the pre-clearing result of the regional power grid 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, for a unit node on which only one unit is mounted, the output adjustment amount of the unit node is the output adjustment amount of the mounted unit, and for the case of the unit nodes on which a plurality of units are mounted, 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 unit under the condition.
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 amount is also provided by a scholart, and the combination state of the set is further adjusted to eliminate the power flow out-of-limit by relaxing the constraint of the set output limit value under the condition that the output of the set cannot meet the safety of the regional power grid. 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 only one logical function division is provided, 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 media in the computer device and, of course, extended storage media 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 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 flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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 above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand 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.