CN110503272A - Meet the limiting short-circuit current aid decision-making method and system of safety and stability requirement - Google Patents
Meet the limiting short-circuit current aid decision-making method and system of safety and stability requirement Download PDFInfo
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Abstract
The invention discloses a kind of limiting short-circuit current aid decision-making method and system for meeting safety and stability requirement, method includes: to filter out effective control measure set based on short circuit current control sensitivity for the out-of-limit bus of short circuit current or route；The recovery measure set and effective control measure set that comprehensive current operating conditions have been taken, which carry out enumerating combination, forms limiting short-circuit current method of operation aid decision scheme set；Safety and stability is filtered out from limiting short-circuit current method of operation aid decision scheme set checks aid decision scheme set；Each scheme in aid decision scheme set is checked to safety and stability and carries out the check of forecast failure safety and stability, chooses final limiting short-circuit current aid decision scheme according to safety and stability check result.The present invention reduces the adverse effect to electricity net safety stable nargin and ability to transmit electricity as far as possible, realizes the coordination between grid short circuit current control and electric network security, power supply reliability on the basis of limiting grid short circuit electric current.
Description
Technical field
The present invention relates to Automation of Electric Systems control technology fields, and in particular to a kind of limit for meeting safety and stability requirement
Short circuit current aid decision-making method processed and system.
Background technique
As power grid scale constantly expands, the tightness degree enhancing contacted between power grid, receiving end grid short circuit electric current is generally forced
It is closely even more than breaker maximum rupturing capacity, is forced to take the measure for cut-offfing and jumping logical route for a long time, main grid structure structural integrity
Property constantly weaken, the regulation of important power transmission section is difficult, and major network power supply capacity and section ability to transmit electricity are restricted.
When power grid operation personnel arrange the method for operation at present, the short circuit current of maximum possible is calculated according to most severe mode,
The measures for limiting short-circuit current taken is overly conservative, reduces the safety margin and power supply reliability of operation of power networks.And online root
According to currently practical operating condition computing system short circuit current and control measure, problem that can be overly conservative to avoid control measure.
Patent " calculation method (ZL 201010181654.0) of preventive control measure for short-circuit current in electric power system " is according to electricity
The actual operating of Force system assesses the short circuit current of current system, and situation that may be exceeded to short circuit current carries out in advance
Anti- control provides prevention and control suggestion and measure.On the one hand, current limiting short-circuit current method of operation aid decision calculates, and leads to
Cross calculating put into operation connect highly resistance, stoppage in transit route, stoppage in transit generator, bus splitting or route go out go here and there operation control measure to more
Busbar short-circuit current sensitivity is limited, search meets the control measure of the not out-of-limit requirement of short circuit current, carries out safety and stability again later
It checks, is exported if meeting safety and stability and requiring as control measure.But above-mentioned calculation method does not fully consider limitation
Coordination between short circuit current and power grid security and stability, section ability to transmit electricity, may in multiple selectable control measure
Take the control measure relatively blunt to security and stability and section ability to transmit electricity.On the other hand, it has been adopted in power grid at present
The control measure taken may no longer need, and need uniformly to consider in the calculating of limiting short-circuit current method of operation aid decision
The recovery scheme of control measure is taken.
Summary of the invention
The present invention in order to overcome the shortcomings in the prior art, proposes a kind of limiting short-circuit current for meeting safety and stability requirement
Aid decision-making method and system comprehensively consider the measures for limiting short-circuit current that current operating conditions have been taken and arrange with effectively control
Apply, it can be ensured that filter out meet short circuit current it is not out-of-limit and throw stop the least scheme of number of devices as safety and stability check side
Case.On the basis of limiting grid short circuit electric current, the unfavorable shadow to electricity net safety stable nargin and ability to transmit electricity is reduced as far as possible
It rings, realizes the coordination between grid short circuit current control and electric network security, power supply reliability.
In order to solve the above technical problems, the present invention provides a kind of limiting short-circuit current auxiliary for meeting safety and stability requirement
Decision-making technique, characterized in that the following steps are included:
For the out-of-limit bus of short circuit current or route, effective control measure collection is filtered out based on short circuit current control sensitivity
It closes；
The recovery measure set and effective control measure set that comprehensive current operating conditions have been taken carry out enumerating combination shape
At limiting short-circuit current method of operation aid decision scheme set；
Filtered out from limiting short-circuit current method of operation aid decision scheme set meet short circuit current it is not out-of-limit and throw
Stop the least scheme of number of devices as safety and stability and checks aid decision scheme set；
Each scheme in aid decision scheme set is checked to safety and stability and carries out the check of forecast failure safety and stability, according to peace
Full stability check result chooses final limiting short-circuit current aid decision scheme.
Further, the recovery measure set and the progress piece of effective control measure that the comprehensive current operating conditions have been taken
Act combination forms limiting short-circuit current method of operation aid decision scheme set and includes:
If sharing n in recovery measure setrThe limiting short-circuit current control measure being had taken up under a current operating conditions,
Each control measure can be taken as no longer taking the measure and still take the measure two states, to nrA control measure are each
State, which is appointed, takes a kind of one combination of formation, and all possible measure status combination composition recovery is enumerated in recovery measure set and is arranged
Composite set is applied, number of combinations is in set
If sharing n in the out-of-limit bus of a certain short circuit current or the effective control measure set of routeclA measure, k are setting
Control measure maximum number in the out-of-limit bus of single short circuit current or the combination of route control measure, appoints in effective control measure set and takes
M≤k control measure constitute a control measure combination, enumerated in the bus or the effective control measure set of route it is all can
The control measure combination of energy constitutes control measure composite set, and number of combinations is
On the basis of the out-of-limit bus of single short circuit current or route control measure combine, it is out-of-limit to carry out multiple short circuit currents
The combination of the control measure of bus or route.An optional combined measure is formed more in each single control measure composite set
The control measure combination of the out-of-limit bus of a short circuit current or route enumerates all possible control measure combination and constitutes multiple short circuits
The control measure composite set of the out-of-limit bus of electric current or route, number of combinations are the out-of-limit bus of each single short circuit current or route control
The product of combined measure number.In each control measure combination of control measure composite set, then deleted if any identical control measure
Except duplicate control measure；The combination of identical control measure is searched whether in the combination of each control measure, if any then deleting
Duplicate control measure combination, ultimately forms the control measure composite set of the out-of-limit bus of multiple short circuit currents or route；
In the control measure combination of sets of recovery measure composite set and the out-of-limit bus of multiple short circuit currents or route, each
Respectively take combined measure to constitute a limiting short-circuit current method of operation aid decision scheme in composite set, enumerate it is all can
Energy scheme forms aid decision scheme set, and scheme maximum number is the product of recovery measure number of combinations and control measure number of combinations.
Further, described that satisfaction short circuit electricity is filtered out from limiting short-circuit current method of operation aid decision scheme set
Flow it is not out-of-limit and throw stop the least scheme of number of devices as safety and stability check aid decision scheme set include:
Control measure and recovery measure in aid decision scheme are used to form new fortune on the basis of the current method of operation
Line mode carries out the calculation of short-circuit current of all buses and route to the new method of operation, judges each bus and line short electricity
Whether stream is more than coupled breaker rated rupturing capacity, is assisted if being less than in the limiting short-circuit current method of operation
Retain the program in decision scheme set, otherwise screens out the program in scheme set；
Then throwing is selected in scheme set stops the least scheme formation safety and stability check aid decision side of number of devices
Case set.
Further, throwing is selected in scheme set stops the minimum scheme formation safety and stability check aid decision of number of devices
Scheme set includes:
Control measure and recovery measure number, selection control measure and recovery are arranged in each scheme in statistical project set respectively
It the sum of applies the least several schemes of number to continue to select the least scheme of control measure number in above-mentioned several schemes, be formed
Carry out the aid decision scheme set of safety and stability check.
Further, each scheme in aid decision scheme set is checked to safety and stability and carries out forecast failure safety and stability school
Core includes:
Each of aid decision scheme set scheme is checked to safety and stability, according to the control measure taken in scheme
Forecast failure collection Contingency screening is carried out with recovery measure；
The safety and stability for carrying out aid decision scheme to the failure after screening is checked, and the safety and stability of each forecast failure is obtained
The safety and stability limit calculated result of nargin and relevant power section.
Further, described to carry out forecast failure collection Contingency screening according to the control measure taken in scheme and recovery measure
Include:
Forecast failure is calculated to concentrate between the position of fault and all control measure and recovery measure of failure i in equivalent impedance
Minimum value Zc.i.min, by ηi0Zc.i.minThe evaluation that forecast failure security and stability is influenced as control measure and recovery measure
Index, wherein ηi0For the security margin of current method of operation failure i；
Judge whether the index is less than the threshold value of setting, such as less than then retain the failure, is otherwise concentrated in forecast failure
Reject the failure.
Further, described to choose final limit value short circuit current aid decision scheme packet according to safety and stability check result
It includes:
Safety and stability check result includes forecast failure security margin and transmission cross-section safety and stability power limit；Root
According to forecast failure security margin and transmission cross-section safety and stability power limit computing system security and stability index；
System security and stability index calculation formula is as follows:
In above formula, PSkFor the system security and stability index of k-th of aid decision scheme, ndFor forecast failure number after screening
Mesh, η 'iTo take i-th of forecast failure security margin of the aid decision scheme method of operation, ηi0For the current method of operation i-th
A forecast failure security margin, nfFor transmission cross-section number in safety and stability check, PmaxiTo take aid decision scheme to transport
The safety and stability power limit of i-th of transmission cross-section of line mode, Pmaxi0It is steady for the safety of i-th of transmission cross-section of the current method of operation
Determine power limit, λaAnd λbThe respectively index weights of security margin and transmission cross-section safety and stability power limit；
Failure nargin in safety and stability check result is rejected first in all aid decision schemes to be negative or transmission cross-section
Safety and stability power limit be less than the scheme of minimum allowable value, then the selecting system security and stability index in remaining scheme
Maximum scheme is as final limiting short-circuit current aid decision scheme.
Correspondingly, the present invention provides a kind of limiting short-circuit current aid decision-making system for meeting safety and stability requirement,
It is characterized in, including effective control measure set calculation module, aid decision scheme set calculation module, safety and stability check auxiliary
Decision scheme set calculation module and limiting short-circuit current aid decision scheme computing module；
Effective control measure set calculation module is based on short circuit current for being directed to the out-of-limit bus of short circuit current or route
Control sensitivity filters out effective control measure set；
Aid decision scheme set calculation module, for integrating the recovery measure set and have that current operating conditions have been taken
Effect control measure set, which carries out enumerating combination, forms limiting short-circuit current method of operation aid decision scheme set；
Safety and stability checks aid decision scheme set calculation module, for determining from limiting short-circuit current method of operation auxiliary
Filtered out in plan scheme set meet short circuit current it is not out-of-limit and throw stop the least scheme of number of devices as safety and stability check it is auxiliary
Help decision scheme set；
Limiting short-circuit current aid decision scheme computing module, for being checked in aid decision scheme set to safety and stability
Each scheme carries out the check of forecast failure safety and stability, and final limiting short-circuit current auxiliary is chosen according to safety and stability check result
Decision scheme.
Compared with prior art, the beneficial effects obtained by the present invention are as follows being: for there are the out-of-limit bus of short circuit current or
Route filters out effective control measure, the limitation that comprehensive current operating conditions have been taken based on short circuit current control sensitivity
Short circuit current measure and effective control measure carry out enumerating combination producing aid decision scheme set, it can be ensured that filter out satisfaction
Short circuit current is not out-of-limit and throwing stops the least scheme of number of devices as safety and stability and checks scheme；It is arranged based on control measure and recovery
Applying influences forecast failure security and stability to carry out Contingency screening to each scheme, can satisfy limiting short-circuit current aid decision and exists
Line computation time requirement；The check of forecast failure safety and stability is carried out to each scheme, selecting system security and stability index is maximum
Aid decision scheme of the scheme as limiting short-circuit current, may be implemented electricity net safety stable nargin and transmission cross-section safety and stability
The limit maximize control target, on the basis of limit grid short circuit electric current, as far as possible reduce to electricity net safety stable nargin with
The adverse effect of ability to transmit electricity realizes the coordination between grid short circuit current control and electric network security, power supply reliability.
Detailed description of the invention
Fig. 1 is the method for the present invention flow diagram.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
A kind of limiting short-circuit current aid decision-making method meeting safety and stability requirement provided in an embodiment of the present invention, first
Device model parameter and power grid current operating conditions estimated result are obtained from regulation central energy management system, generates power grid security
Stability Assessment calculates and calculation of short-circuit current data, carries out static each forecast failure, transient state and the assessment of dynamic security stability margin
It is calculated with section power limit, and carries out power grid bus and line short circuit current calculating；It is out-of-limit for there are short circuit currents
Bus or route filter out effective control measure based on short circuit current control sensitivity, and comprehensive current operating conditions have been taken
Measures for limiting short-circuit current (restore control measure) and effective control measure carry out enumerating combination producing aid decision scheme collection
It closes, calculation of short-circuit current is carried out to each scheme, filter out that meet short circuit current not out-of-limit and throw and stop the least scheme of number of devices and make
Scheme is checked for safety and stability；Forecast failure security and stability is influenced to carry out each scheme based on control measure and recovery measure
Contingency screening carries out the check of forecast failure safety and stability to each scheme on this basis；Finally, selecting system security and stability refers to
Mark aid decision scheme of the maximum scheme as limiting short-circuit current.
A kind of limiting short-circuit current aid decision-making method meeting safety and stability requirement of the invention, as shown in Figure 1, including
Following steps:
S1: based on the grid equipment model parameter and power grid current operating conditions obtained from regulation central energy management system
Estimated result generates the calculating data calculated for safety and stability evaluation, concentrates each forecast failure to carry out for forecast failure quiet
State, transient state and dynamic security Stability Assessment calculate, and obtain static each forecast failure, transient state and dynamic security stability margin, in turn
The minimum value of static forecast failure, transient state and dynamic security stability margin is chosen as each forecast failure security margin；
The safety and stability power limit for carrying out relevant power section calculates, and obtains each transmission cross-section safety and stability limit function
Rate；
The calculation of short-circuit current for carrying out all buses and route, judge each bus and line short circuit current whether be more than and its
Connected breaker rated rupturing capacity is transferred to S3 if being less than, and otherwise judgement is more than the bus of circuit breaker interrupting capacity
It is the out-of-limit bus of short circuit current and route with route, enters S2 later；
S2: highly resistance, stoppage in transit route, stoppage in transit generator, the bus point of connecting that put into operation in short circuit current control measure set are calculated
It splits operation or route goes out the short circuit current control sensitivity gone here and there and run control measure to the out-of-limit bus of each short circuit current or route,
Bus out-of-limit for each short circuit current or route select the control measure that control sensitivity is greater than threshold value, form the mother
Line or the corresponding effective control measure set of route；
Wherein, sensitivity threshold value is generally taken as 0.5kA.
S3: based on the limitation short circuit electricity being had taken up under the current operating conditions that regulation central energy management system obtains
Flow control measure forms recovery measure set, in conjunction with the out-of-limit bus of each short circuit current or effective control measure collection of route
It closes, carries out the measure inside recovery measure and control measure set and between set respectively and enumerate combination, form limitation short circuit
Electric current method of operation aid decision scheme set；
Wherein, to enumerate combined method as follows for measure inside recovery measure and control measure set and between set:
If sharing n in recovery measure setrThe limiting short-circuit current control measure being had taken up under a current operating conditions,
Each control measure can be taken as no longer taking the measure (referred to as restoring the measure) and still take the measure (referred to as not
Restore the measure) two states, to nrA each state of control measure, which is appointed, takes a kind of one combination of formation, in recovery measure set
In enumerate all possible measure status combination composition recovery combined measure set, number of combinations is in set
If sharing n in the out-of-limit bus of a certain short circuit current or the effective control measure set of routeclA measure, k are setting
Control measure maximum number (being usually taken to be 2) in the out-of-limit bus of single short circuit current or the combination of route control measure, is effectively controlling
Measure set, which is appointed, takes m≤k control measure to constitute a control measure combination, in the bus or the effective control measure set of route
In enumerate the combination of all possible control measure and constitute control measure composite set, number of combinations is
On the basis of the out-of-limit bus of single short circuit current or route control measure combine, it is out-of-limit to carry out multiple short circuit currents
The combination of the control measure of bus or route.An optional combined measure is formed more in each single control measure composite set
The control measure combination of the out-of-limit bus of a short circuit current or route enumerates all possible control measure combination and constitutes multiple short circuits
The control measure composite set of the out-of-limit bus of electric current or route, number of combinations are the out-of-limit bus of each single short circuit current or route control
The product of combined measure number.In each control measure combination of control measure composite set, then deleted if any identical control measure
Except duplicate control measure；The combination of identical control measure is searched whether in the combination of each control measure, if any then deleting
Duplicate control measure combination, ultimately forms the control measure composite set of the out-of-limit bus of multiple short circuit currents or route.
In the control measure combination of sets of recovery measure composite set and the out-of-limit bus of multiple short circuit currents or route, each
Respectively take combined measure to constitute a limiting short-circuit current method of operation aid decision scheme in composite set, enumerate it is all can
Energy scheme forms aid decision scheme set, and scheme maximum number is the product of recovery measure number of combinations and control measure number of combinations.
S4: the short circuit current of limiting short-circuit current method of operation aid decision scheme is carried out parallel based on cluster Computing Platform
It calculates.
Control measure and recovery measure in aid decision scheme are used to form new fortune on the basis of the current method of operation
Line mode carries out the calculation of short-circuit current of all buses and route to the new method of operation, judges each bus and line short electricity
Whether stream is more than coupled breaker rated rupturing capacity, is assisted if being less than in the limiting short-circuit current method of operation
Retain the program in decision scheme set, otherwise screens out the program in scheme set.Throwing is selected in scheme set later to stop
The least scheme of number of devices forms safety and stability and checks aid decision scheme set；
Wherein, throwing is selected in scheme set, and to stop the minimum scheme method of number of devices as follows:
Control measure and recovery measure number, selection control measure and recovery are arranged in each scheme in statistical project set respectively
It the sum of applies the least several schemes of number to continue to select the least scheme of control measure number in above-mentioned several schemes, be formed
Carry out the aid decision scheme set of safety and stability check.
S5: each of aid decision scheme set scheme is checked to safety and stability, according to the control taken in scheme
Measure and recovery measure carry out forecast failure collection Contingency screening, carry out the safety of aid decision scheme to the failure after screening later
Stability check obtains the security margin of each forecast failure and the safety and stability limit calculated result of relevant power section；
Wherein, forecast failure collection Contingency screening method is carried out such as according to the control measure and recovery measure taken in scheme
Under:
Forecast failure is calculated to concentrate between the position of fault and all control measure and recovery measure of failure i in equivalent impedance
Minimum value Zc.i.min, by ηi0Zc.i.minThe evaluation that forecast failure security and stability is influenced as control measure and recovery measure
Index, wherein ηi0For the security margin of current method of operation failure i.Judge whether the index is less than the threshold value of setting
(being taken as 100 ohm), such as less than then retains the failure, otherwise concentrates in forecast failure and rejects the failure.
In addition, the safety and stability check method of failure progress aid decision scheme is as follows after screening:
It is generated newly after taking control measure and the recovery measure in aid decision scheme on the basis of the current method of operation
The method of operation and corresponding safety and stability evaluation calculate data, the faulty carry out power train of institute concentrated to forecast failure after screening
System static state, transient state and dynamic security Stability Assessment calculate, and obtain each forecast failure security margin.Anticipation event after such as screening
Barrier is concentrated and remains relevant power section relevant fault, then the safety and stability power limit for also carrying out relevant power section calculates,
Obtain transmission cross-section safety and stability power limit.
S6: forecast failure security margin and transmission cross-section safety and stability limit function according to all aid decision schemes
Rate computing system security and stability index, selects final aid decision scheme, exports final aid decision scheme.
Wherein, according to the forecast failure security margin of all aid decision schemes and the transmission cross-section safety and stability limit
The final aid decision scheme method of power selection is as follows:
System security and stability index calculation formula is as follows:
In above formula, PSkFor the system security and stability index of k-th of aid decision scheme, ndFor forecast failure number after screening
Mesh, η 'iTo take i-th of forecast failure security margin of the aid decision scheme method of operation, ηi0For the current method of operation i-th
A forecast failure security margin, nfFor transmission cross-section number in safety and stability check, PmaxiTo take aid decision scheme to transport
The safety and stability power limit of i-th of transmission cross-section of line mode, Pmaxi0It is steady for the safety of i-th of transmission cross-section of the current method of operation
Determine power limit, λaAnd λbRespectively index weights (the representative value of security margin and transmission cross-section safety and stability power limit
It takes 0.5).
Failure nargin in safety and stability check result is rejected first in all aid decision schemes to be negative or transmission cross-section
Safety and stability power limit be less than the scheme of minimum allowable value, later the selecting system security and stability index in remaining scheme
Maximum scheme is as final aid decision scheme.
Correspondingly, the present invention provides a kind of limiting short-circuit current aid decision-making system for meeting safety and stability requirement, packet
It includes effective control measure set calculation module, aid decision scheme set calculation module, safety and stability and checks aid decision scheme
Set calculation module and limiting short-circuit current aid decision scheme computing module；
Effective control measure set calculation module is based on short circuit current for being directed to the out-of-limit bus of short circuit current or route
Control sensitivity filters out effective control measure set；
Aid decision scheme set calculation module, for integrating the recovery measure set and have that current operating conditions have been taken
Effect control measure set, which carries out enumerating combination, forms limiting short-circuit current method of operation aid decision scheme set；
Safety and stability checks aid decision scheme set calculation module, for determining from limiting short-circuit current method of operation auxiliary
Filtered out in plan scheme set meet short circuit current it is not out-of-limit and throw stop the least scheme of number of devices as safety and stability check it is auxiliary
Help decision scheme set；
Limiting short-circuit current aid decision scheme computing module, for being checked in aid decision scheme set to safety and stability
Each scheme carries out the check of forecast failure safety and stability, and final limiting short-circuit current auxiliary is chosen according to safety and stability check result
Decision scheme.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications, these improvements and modifications can also be made
Also it should be regarded as protection scope of the present invention.
Claims (9)
1. meeting the limiting short-circuit current aid decision-making method of safety and stability requirement, characterized in that the following steps are included:
For the out-of-limit bus of short circuit current or route, effective control measure set is filtered out based on short circuit current control sensitivity；
The recovery measure set and effective control measure set that comprehensive current operating conditions have been taken carry out enumerating combination formation limit
Short circuit current method of operation aid decision scheme set processed；
Filtered out from limiting short-circuit current method of operation aid decision scheme set meet short circuit current it is not out-of-limit and throw stop setting
The standby least scheme of number checks aid decision scheme set as safety and stability；
Each scheme in aid decision scheme set is checked to safety and stability and carries out the check of forecast failure safety and stability, it is steady according to safety
Determine check result and chooses final limiting short-circuit current aid decision scheme.
2. the limiting short-circuit current aid decision-making method according to claim 1 for meeting safety and stability requirement, characterized in that
The recovery measure set and effective control measure that the comprehensive current operating conditions have been taken enumerate combination, and to form limitation short
Road electric current method of operation aid decision scheme set includes:
If sharing n in recovery measure setrThe limiting short-circuit current control measure being had taken up under a current operating conditions, each
Control measure can be taken as no longer taking the measure and still take the measure two states, to nrA each state of control measure
Appoint and take a kind of one combination of formation, all possible measure status combination composition recovery measure group is enumerated in recovery measure set
Intersection is closed, and number of combinations is in set
If sharing n in the out-of-limit bus of a certain short circuit current or the effective control measure set of routeclA measure, k are the single of setting
Control measure maximum number in the out-of-limit bus of short circuit current or the combination of route control measure, appoints in effective control measure set and takes m≤k
A control measure constitute a control measure combination, enumerate in the bus or the effective control measure set of route all possible
Control measure combination constitutes control measure composite set, and number of combinations is
On the basis of the out-of-limit bus of single short circuit current or route control measure combine, the out-of-limit bus of multiple short circuit currents is carried out
Or the control measure combination of route.An optional combined measure is formed multiple short in each single control measure composite set
The combination of the control measure of the out-of-limit bus of road electric current or route enumerates all possible control measure combination and constitutes multiple short circuit currents
The control measure composite set of out-of-limit bus or route, number of combinations are the out-of-limit bus of each single short circuit current or route control measure
The product of number of combinations.In each control measure combination of control measure composite set, weight is then deleted if any identical control measure
Multiple control measure；The combination of identical control measure is searched whether in the combination of each control measure, if any then deleting repetition
Control measure combination, ultimately form the control measure composite set of the out-of-limit bus of multiple short circuit currents or route；
In the control measure combination of sets of recovery measure composite set and the out-of-limit bus of multiple short circuit currents or route, each combination
It respectively takes a combined measure to constitute a limiting short-circuit current method of operation aid decision scheme in set, enumerates all possibility sides
Case forms aid decision scheme set, and scheme maximum number is the product of recovery measure number of combinations and control measure number of combinations.
3. the limiting short-circuit current aid decision-making method according to claim 1 for meeting safety and stability requirement, characterized in that
It is described filtered out from limiting short-circuit current method of operation aid decision scheme set meet short circuit current it is not out-of-limit and throw stop setting
The standby least scheme of number checks aid decision scheme set as safety and stability and includes:
Control measure and recovery measure in aid decision scheme are used to form new operation side on the basis of the current method of operation
Formula carries out the calculation of short-circuit current of all buses and route to the new method of operation, judges each bus and line short circuit current is
No is more than coupled breaker rated rupturing capacity, in limiting short-circuit current method of operation aid decision if being less than
Retain the program in scheme set, otherwise screens out the program in scheme set；
Then throwing is selected in scheme set stops the least scheme formation safety and stability check aid decision scheme collection of number of devices
It closes.
4. the limiting short-circuit current aid decision-making method according to claim 3 for meeting safety and stability requirement, characterized in that
Throwing is selected in scheme set stop the minimum scheme of number of devices and form safety and stability to check aid decision scheme set include:
Control measure and recovery measure number in each scheme in statistical project set respectively, select control measure and recovery measure it
Continue to select the least scheme of control measure number, formed and carried out in above-mentioned several schemes with the least several schemes of number
The aid decision scheme set that safety and stability is checked.
5. the limiting short-circuit current aid decision-making method according to claim 1 for meeting safety and stability requirement, characterized in that
Checking each scheme progress forecast failure safety and stability check in aid decision scheme set to safety and stability includes:
Each of aid decision scheme set scheme is checked to safety and stability, according to the control measure taken in scheme and extensive
Multiple measure carries out forecast failure collection Contingency screening；
The safety and stability for carrying out aid decision scheme to the failure after screening is checked, and the security margin of each forecast failure is obtained
With the safety and stability limit calculated result of relevant power section.
6. the limiting short-circuit current aid decision-making method according to claim 5 for meeting safety and stability requirement, characterized in that
It is described to include: according to the control measure taken in scheme and recovery measure progress forecast failure collection Contingency screening
Between the position of fault and all control measure and recovery measure of calculating forecast failure concentration failure i in equivalent impedance most
Small value Zc.i.min, by ηi0Zc.i.minThe evaluation influenced as control measure and recovery measure on forecast failure security and stability refers to
Mark, wherein ηi0For the security margin of current method of operation failure i；
Judge whether the index is less than the threshold value of setting, such as less than then retain the failure, otherwise concentrates and reject in forecast failure
The failure.
7. the limiting short-circuit current aid decision-making method according to claim 1 for meeting safety and stability requirement, characterized in that
The foundation safety and stability check result chooses final limit value short circuit current aid decision scheme and includes:
Safety and stability check result includes forecast failure security margin and transmission cross-section safety and stability power limit；According to pre-
Think failure safe stability margin and transmission cross-section safety and stability power limit computing system security and stability index；
Failure nargin in safety and stability check result is rejected first in all aid decision schemes to be negative or the peace of transmission cross-section
Full stability power limit is less than the scheme of minimum allowable value, and then selecting system security and stability index is maximum in remaining scheme
Scheme as final limiting short-circuit current aid decision scheme.
8. the limiting short-circuit current aid decision-making method according to claim 7 for meeting safety and stability requirement, characterized in that
System security and stability index calculation formula is as follows:
In above formula, PSkFor the system security and stability index of k-th of aid decision scheme, ndFor screening after forecast failure number,
ηi' it is to take i-th of forecast failure security margin of the aid decision scheme method of operation, ηi0It is i-th of the current method of operation
Forecast failure security margin, nfFor transmission cross-section number in safety and stability check, PmaxiTo take aid decision scheme to run
The safety and stability power limit of i-th of transmission cross-section of mode, Pmaxi0For the safety and stability of i-th of transmission cross-section of the current method of operation
Power limit, λaAnd λbThe respectively index weights of security margin and transmission cross-section safety and stability power limit.
9. meeting the limiting short-circuit current aid decision-making system of safety and stability requirement, characterized in that including effective control measure collection
It closes computing module, aid decision scheme set calculation module, safety and stability and checks aid decision scheme set calculation module and limit
Short circuit current aid decision scheme computing module processed；
Effective control measure set calculation module is controlled for being directed to the out-of-limit bus of short circuit current or route based on short circuit current
Sensitivity filters out effective control measure set；
Aid decision scheme set calculation module, for integrating the recovery measure set and effectively control that current operating conditions have been taken
Measure set processed, which carries out enumerating combination, forms limiting short-circuit current method of operation aid decision scheme set；
Safety and stability checks aid decision scheme set calculation module, is used for from limiting short-circuit current method of operation aid decision side
Filtered out in case set meet short circuit current it is not out-of-limit and throw stop the least scheme of number of devices as safety and stability check assist determine
Plan scheme set；
Limiting short-circuit current aid decision scheme computing module, for checking each side in aid decision scheme set to safety and stability
Case carries out the check of forecast failure safety and stability, chooses final limiting short-circuit current aid decision according to safety and stability check result
Scheme.
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