CN108521122A - A kind of Contingency Analysis of Power Systems method considering prepared auto restart - Google Patents
A kind of Contingency Analysis of Power Systems method considering prepared auto restart Download PDFInfo
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- CN108521122A CN108521122A CN201810332635.XA CN201810332635A CN108521122A CN 108521122 A CN108521122 A CN 108521122A CN 201810332635 A CN201810332635 A CN 201810332635A CN 108521122 A CN108521122 A CN 108521122A
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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
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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
- H02J3/04—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
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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
- 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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Abstract
The present invention discloses a kind of Contingency Analysis of Power Systems method considering prepared auto restart, and this method integrated use judges that algorithm, prepared auto restart put into algorithm, mixed current algorithm and Sensitivity Method etc. based on Jacobian matrix unusual decompression.Judge algorithm with based on the unusual decompression of Jacobian matrix, decompression island topology analysis can be carried out to power grid, check and whether there is decompression node in power grid.If not having decompression node in power grid, the trend of system after failure occurs directly is calculated with Sensitivity Method；If there are decompression node, need to carry out prepared auto restart input analysis, to being associated with prepared auto restart implementation action in power grid.Grid condition may change at this time as N 1+1 or even N 1+M, can use mixed current method computing system trend at this time.The method of the present invention can adapt to the radial feature of urban distribution network distribution network, and consider automatic device factor, when carrying out operation risk assessment to urban distribution network, can embody operation of urban distribution network reality well.
Description
Technical field
The present invention relates to Power System Intelligent analysis and control technology fields, and in particular to a kind of electric power considering prepared auto restart
Static system safety analytical method.
Background technology
Contingency Analysis of Power Systems analyzes steady-state operation situation of the system after forecast accident occurs.Such as
After circuit, transformer, busbar and generator outage, if the overload of other equipment can be caused, if node voltage can be caused
It is out-of-limit；Also, the overload of corresponding certain situation and out-of-limit, provides alternative system call interception policy network.In electric system
Operation in, in order to avoid overload and voltage cross the border caused equipment damage, or since overload equipment is made in system protection
The power failure out of service and leading to large area chain reaction under, online or progress static system safety analysis in real time is very
It is important.
Prediction failure can be carried out using static security analysis, for a transmission system programme, can be verified
It bears the ability of accident；For running electric system, the safety of its method of operation and the mode of connection can be examined,
And then the front and back precautionary measures or corrective action that should be used to accidents happened.
And Contingency Analysis of Power Systems method is usually analyzed with traditional based on Sensitivity Method at present, and it is clever
Sensitivity method analyzes urban distribution network and the steady-state operation situation after forecast accident occurs, and there are certain limitations, does not adapt to city electricity
The radial feature of net distribution network, and without considering automatic device, especially prepared auto restart well.To urban distribution network
When carrying out operation risk assessment, operation of urban distribution network reality cannot be embodied.
Invention content
The present invention is directed to solve above-mentioned the technical problems existing in the prior art at least to some extent, a kind of consideration is proposed
The Contingency Analysis of Power Systems method of prepared auto restart can adapt to the radial feature of urban distribution network distribution network, and consider
Automatic device factor can embody operation of urban distribution network reality well when carrying out operation risk assessment to urban distribution network.
In order to realize that the object of the invention, the embodiment of the present invention provide a kind of power system static safety point considering prepared auto restart
Analysis method specifically uses following technical scheme：
This method comprises the following steps：
Load flow calculation is carried out to normal power grid, finds out the trend power of state variable and each branch under normal operation；
Simulating grid physical fault, cut-offs fault element, judges algorithm to power grid with based on the unusual decompression of Jacobian matrix
System carries out decompression-island topology analysis, and carries out Load flow calculation；
After acquiring the network system trend under malfunction, heat-stable calibration is carried out to each branch of network system, judges power grid system
Whether there is Branch Power Flow that heavy overload occurs in system；For heavy overload and meet the branch of III of Distance section protection act definite value,
III of Distance section protection act cuts off respective branch；
Again topological analysis is carried out to power grid, recalculates the system load flow under new malfunction, until owning in network system
III of Distance section protection act does not occur for branch, and system reaches new steady s tate；
Prepared auto restart motion analysis is carried out, prepared auto restart is configured, continues thermal stability check, waits for that power grid reaches stable operation again
When, cutting load processing is carried out to the branch of overload, power grid static security analysis terminates.
Optionally, this method further includes：When carrying out Load flow calculation, if cut-offfing for element does not cause power grid to generate newly
When decompression node or off-the-line, Load flow calculation is carried out using Sensitivity Method；If cut-offfing for element causes power grid to generate new decompression section
When point or off-the-line, directly mixed current method is used to carry out Load flow calculation.
Optionally, the method further includes：The progress prepared auto restart motion analysis specifically use prepared auto restart put into algorithm into
Row analysis, the prepared auto restart input algorithm includes prepared auto restart input strategy and backup auto-activating device tables of data；
Whether the prepared auto restart input strategy, which is used to act for prepared auto restart, provides foundation comprising first checking for working power side is
No normal work checks the working condition of standby electricity source if decompression situation occurs for working power side, if standby electricity source passes through
Inspection has running current, then can put into power grid prepared auto restart and run；
The backup auto-activating device tables of data is used to store the information of all prepared auto restarts in power grid.
Optionally, the backup auto-activating device tables of data includes at least backup auto-activating device ID, working power side bus, standby electricity
Source busbar, backup auto-activating device type throw and move back state and prepared auto restart electric parameter.
Optionally, following steps are executed before whether the inspection working power side works normally：
（1）Topological analysis is carried out to power grid, checks for decompression node；
（2）If there are decompression node, all decompression nodes form decompression set of node；If decompression node is not present, it is transferred to flow
（7）；
（3）The node in decompression set of node is taken out successively, inquires backup auto-activating device tables of data, and whether be examined in has and taking-up
The associated prepared auto restart configuration of decompression node；
（4）If the decompression node taken out has whether configuration prepared auto restart, verification prepared auto restart standby electricity source have operating current.
Optionally, following steps are executed after whether the inspection working power side works normally：
（5）If being unsatisfactory for prepared auto restart input strategy, it is transferred to the step (3)；If meeting prepared auto restart input strategy, by prepared auto restart
Device is put into power grid, this decompression node reconnects in power grid, restores electricity；By node, it is moved from decompression set of node
It removes, and 1 is set to by the variable NetFig whether network structure changes is characterized；
（6）In decompression set of node after all node analyses, whether verification NetFig is 1；If NetFig is equal to 1, net is indicated
Network structure is changed, and new decompression set of node is generated, and is transferred to flow (3)；If NetFig is not equal to 1, it is transferred to flow（7）；
（7）Terminate.
The Contingency Analysis of Power Systems method for implementing the present embodiment has the advantages that：
（1）Present invention method is on the basis of traditional power grid static security analysis method, in conjunction with based on Jacobian matrix
Unusual decompression judges algorithm, prepared auto restart input algorithm, mixed current algorithm and Sensitivity Method, it is proposed that considers prepared auto restart
Static security analysis method.This method has fully considered the configuration and influence of prepared auto restart in power grid, to urban distribution network into sector-style
When the assessment of danger, meet operation of power networks reality.
（2）Present invention method considers the static security analysis method of prepared auto restart compared to traditional Sensitivity Method
The configuration and influence of prepared auto restart and the complexity of electric network composition in power grid are fully considered, overcome Sensitivity Method applies office
Limit, while having the advantages that Sensitivity Method calculating again.When applied to operation of urban distribution network risk assessment, can science it is accurate
The safety of power grid is assessed, there is stronger superiority.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the Contingency Analysis of Power Systems method flow schematic diagram that prepared auto restart is considered described in the embodiment of the present invention；
Fig. 2 is network islands overhaul flow chart described in the embodiment of the present invention；
Prepared auto restart described in Fig. 3 embodiment of the present invention puts into algorithm flow chart.
Specific embodiment
In being described below, for illustration and not for limitation, it is proposed that such as tool of particular system structure, technology etc
Body details understands the embodiment of the present invention to cut thoroughly.However, it will be clear to one skilled in the art that there is no these specific
The present invention can also be realized in the other embodiments of details.In other situations, it omits to well-known system, device, electricity
The detailed description of road and method, in case unnecessary details interferes description of the invention.
In order to illustrate technical solutions according to the invention, illustrated below by specific embodiment combination attached drawing.
The embodiment of the present invention provides a kind of Contingency Analysis of Power Systems method considering prepared auto restart, can at least answer
Power networks risk for bus-bar fault is assessed, it should be noted that this method can also be applied to power grid other failures
Power networks risk is assessed, and the present embodiment is illustrated technical solution of the present invention by taking bus-bar fault as an example.It is as shown in Figure 1 this
The Contingency Analysis of Power Systems method and step flow of inventive embodiments, mainly includes the following steps：
Electrical network basic data is established, when carrying out static security analysis to power grid, Load flow calculation is carried out to normal power grid, is found out just
The trend power of state variable and each branch under normal operating condition；
Simulating grid physical fault, cut-offs fault element, judges algorithm to power grid with based on the unusual decompression of Jacobian matrix
System carries out decompression-island topology analysis, and carries out Load flow calculation；
Wherein, the decompression unusual based on Jacobian matrix judges that algorithm utilizes H gusts of Jacobian matrix submatrix, can be quick
Ground is detected to carrying out the isolated island in network.
Specifically, the algorithm forms H-matrix according to trend first, the row correlation of H-matrix is detected, calculates square
The row related coefficient of battle array H：
(1) row related coefficient is all -1, and system is interior without isolated island.
(2) row related coefficient is not all -1, and it is 0 to have part row related coefficient, system sectionalizing operation.All row related coefficients
An isolated island is belonged to for -1 node；Matrix H is reformulated for 0 node, continues to detect.
Network islands testing process need to carry out electricity as shown in Fig. 2, after the isolated island in detecting network to each isolated island
The detection of source point.If non-transformer in isolated island, the node in the isolated island can determine whether as deperssurization emergency has occurred.In engineering reality
In, due to area power grid part off-the-line at isolated island after, the node in isolated island generally can not meet power reguirements, therefore, generally may be used
Think the load bus decompression in isolated island.
After acquiring the system load flow under malfunction, should to each branch of system carry out heat-stable calibration, judge be in system
It is no to have Branch Power Flow that heavy overload occurs, for heavy overload and meet the branch of III of Distance section protection act definite value, III of Distance
Section protection will act, and cut off respective branch；
Due to there is new branch to exit power grid, electric network composition is changed, and need to be carried out topological analysis to power grid again, be counted again
Calculate the system load flow under new malfunction；Until III of Distance section protection act does not occur for all branches in system, system reaches
New steady s tate.
Prepared auto restart motion analysis is carried out using prepared auto restart input algorithm, configures prepared auto restart, the input of prepared auto restart will change electricity
Net trend is distributed, therefore need to continue thermal stability check.When power grid reaches stable operation again, to the branch of overburden portion
Road carries out cutting load processing, and power grid static security analysis terminates.
When carrying out urban distribution network risk assessment, to consider that power grid is adjusted to ensure the reliability of power supply in ground, often install
Many backup auto-activating devices.Wherein prepared auto restart is the automatic device installed in electric system in order to improve power supply reliability.When
After working power disappears because of failure or other reasons, automatic switching device of standby power supply rapidly disconnects working power, and by standby electricity
Source or other normal work power supplys are devoted oneself to work.Due to the action of prepared auto restart, originally simple N-1 accident analyses are often at N-
1+1 or even N-1+M accident analyses, if not considering the action of prepared auto restart, analysis result often directly causes removal of load, this is not
Meet the reality of operation of power networks.Therefore, the embodiment of the present invention fully considers the configuration and influence of prepared auto restart in power grid, integrated use
Judge algorithm, prepared auto restart input algorithm, mixed current algorithm to urban power grid accidents based on Jacobian matrix unusual decompression
Consequence is analyzed to determine system is new after accident the method for operation, can be when carrying out risk assessment to urban distribution network, science
Accurately assess the safety of power grid.
Wherein, this method further includes：When carrying out Load flow calculation, condition coupling judgement first is carried out to Sensitivity Method, even
When the cut-offfing of element does not cause power grid to generate new decompression node or off-the-line, Sensitivity Method may be used and carry out Load flow calculation,
To accelerate the bulk velocity of static security analysis.If being unsatisfactory for the condition that Sensitivity Method calculates trend, mixed current is directly used
Method carries out Load flow calculation.Therefore, the embodiment of the present invention further combines Sensitivity Method and divides urban power grid accidents consequence
Analysis can scientifically and accurately be assessed with determining system is new after accident the method for operation when carrying out risk assessment to urban distribution network
The safety of power grid.It should be noted that mixed current method is tidal current computing method well known to those skilled in the art, therefore this
It is not described in detail in embodiment.
Wherein, the method further includes：The progress prepared auto restart motion analysis specifically uses prepared auto restart input algorithm to carry out
Analysis, the prepared auto restart input algorithm includes prepared auto restart input strategy and backup auto-activating device tables of data；
Whether the prepared auto restart input strategy, which is used to act for prepared auto restart, provides foundation, and prepared auto restart the commitment principle often can be summarized as
" checkout voltage, inspection are without stream ".If grid collapses, first check for whether working power side works normally, if working power side is sent out
Raw decompression situation, then check the working condition of standby electricity source, can be with if standby electricity source has running current on inspection
Prepared auto restart is put into power grid and is run；If being pointed out that standby electricity source no-voltage, prepared auto restart should not start.Otherwise,
Even if action, can not restore electricity, the operating time is increased instead, is delayed power transmission.Meanwhile prepared auto restart can only act one
It is secondary.If after prepared auto restart puts into power grid, and because of accident tripping, then prepared auto restart should not continue to put at this time.
The backup auto-activating device tables of data is used to store the information of all prepared auto restarts in power grid.
Wherein, prepared auto restart is the automatic device installed in electric system in order to improve power supply reliability.Work as working power
After disappearing because of failure or other reasons, automatic switching device of standby power supply rapidly disconnects working power, and by stand-by power supply or other
Normal work power supply is devoted oneself to work.It should be pointed out that prepared auto restart can not be acted arbitrarily, input need to meet certain condition.
It can be put into according to prepared auto restart for this purpose, present invention implementation proposes prepared auto restart input algorithm when assessing operation of urban distribution network risk
Algorithm controls the input of prepared auto restart in power grid.
Specifically, the backup auto-activating device tables of data includes at least backup auto-activating device ID, working power side bus, spare
Power supply side bus, backup auto-activating device type throw and move back state and prepared auto restart electric parameter, the backup auto-activating device tables of data by with
Family inputs and safeguards.
In the present embodiment, since local power network is when configuring prepared auto restart, the operation time limit of prepared auto restart has been considered
And the action cooperation etc. that prepared auto restart is mutual, therefore in backup auto-activating device tables of data, without the concern for the dynamic of prepared auto restart
Make time limit and the mutual fiting tuning problem of different prepared auto restarts.When carrying out static security analysis to power grid, for prepared auto restart
Input when meeting prepared auto restart and putting into condition, directly related prepared auto restart can be put into according to advance setting.To city
It, can be according to pre-set backup auto-activating device tables of data, in conjunction with prepared auto restart input strategy, mould when power grid carries out operation risk assessment
The action of prepared auto restart in quasi- system.It is as shown in Figure 3 that prepared auto restart puts into algorithm detailed process.
（1）Topological analysis is carried out to power grid, checks for decompression node；
（2）If there are decompression node, all decompression nodes form decompression set of node；If decompression node is not present, it is transferred to flow
（7）；
（3）The node in decompression set of node is taken out successively, inquires backup auto-activating device tables of data, and whether be examined in has and taking-up
The associated prepared auto restart configuration of decompression node；
（4）If the decompression node taken out has whether configuration prepared auto restart, verification prepared auto restart standby electricity source have operating current.
（5）If being unsatisfactory for prepared auto restart input strategy, it is transferred to the step (3)；It, will be standby if meeting prepared auto restart input strategy
Automatic bus is put into power grid, this decompression node reconnects in power grid, restores electricity；By node its from decompression set of node
Middle removal, and it is set to 1 by the variable NetFig whether network structure changes is characterized；
（6）In decompression set of node after all node analyses, whether verification NetFig is 1；If NetFig is equal to 1, net is indicated
Network structure is changed, and new decompression set of node is generated, and is transferred to flow (3)；If NetFig is not equal to 1, it is transferred to flow（7）；
（7）Terminate.
The Contingency Analysis of Power Systems method for implementing the present embodiment has the advantages that：
（1）Present invention method is on the basis of traditional power grid static security analysis method, in conjunction with based on Jacobian matrix
Unusual decompression judges algorithm, prepared auto restart input algorithm, mixed current algorithm and Sensitivity Method, it is proposed that considers prepared auto restart
Static security analysis method.This method has fully considered the configuration and influence of prepared auto restart in power grid, to urban distribution network into sector-style
When the assessment of danger, meet operation of power networks reality.
（2）Present invention method considers the static security analysis method of prepared auto restart compared to traditional Sensitivity Method
The configuration and influence of prepared auto restart and the complexity of electric network composition in power grid are fully considered, overcome Sensitivity Method applies office
Limit, while having the advantages that Sensitivity Method calculating again.When applied to operation of urban distribution network risk assessment, can science it is accurate
The safety of power grid is assessed, there is stronger superiority.
Part not deployed in method in the embodiment of the present invention can refer to the assessment system and its method of above example
Corresponding part is no longer developed in details herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. mean the specific features described in conjunction with the embodiment or example,
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, description specific features, structure, material or
Feature can be combined in any suitable manner in any one or more of the embodiments or examples.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing specific logical function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the present invention includes other realization, wherein sequence that is shown or discussing can not be pressed,
Include according to involved function by it is basic simultaneously in the way of or in the opposite order, to execute function, this should be by the present invention's
Embodiment person of ordinary skill in the field is understood.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (6)
1. a kind of Contingency Analysis of Power Systems method considering prepared auto restart, which is characterized in that this method comprises the following steps：
Load flow calculation is carried out to normal power grid, finds out the trend power of state variable and each branch under normal operation；
Simulating grid physical fault, cut-offs fault element, judges algorithm to power grid with based on the unusual decompression of Jacobian matrix
System carries out decompression-island topology analysis, and carries out Load flow calculation；
After acquiring the network system trend under malfunction, heat-stable calibration is carried out to each branch of network system, judges power grid system
Whether there is Branch Power Flow that heavy overload occurs in system；For heavy overload and meet the branch of III of Distance section protection act definite value,
III of Distance section protection act cuts off respective branch；
Again topological analysis is carried out to power grid, recalculates the system load flow under new malfunction, until owning in network system
III of Distance section protection act does not occur for branch, and system reaches new steady s tate；
Prepared auto restart motion analysis is carried out, prepared auto restart is configured, continues thermal stability check, waits for that power grid reaches stable operation again
When, cutting load processing is carried out to the branch of overload, power grid static security analysis terminates.
2. a kind of Contingency Analysis of Power Systems method considering prepared auto restart as described in claim 1, which is characterized in that should
Method further includes：When carrying out Load flow calculation, if element is cut-off when power grid not being caused to generate new decompression node or off-the-line,
Load flow calculation is carried out using Sensitivity Method；If the cut-offfing of element causes power grid to generate new decompression node or off-the-line, directly adopt
Load flow calculation is carried out with mixed current method.
3. a kind of Contingency Analysis of Power Systems method considering prepared auto restart as described in claim 1, which is characterized in that institute
The method of stating further includes：The progress prepared auto restart motion analysis specifically uses prepared auto restart input algorithm to be analyzed, the prepared auto restart
It includes prepared auto restart input strategy and backup auto-activating device tables of data to put into algorithm；
Whether the prepared auto restart input strategy, which is used to act for prepared auto restart, provides foundation comprising first checking for working power side is
No normal work checks the working condition of standby electricity source if decompression situation occurs for working power side, if standby electricity source passes through
Inspection has running current, then can put into power grid prepared auto restart and run；
The backup auto-activating device tables of data is used to store the information of all prepared auto restarts in power grid.
4. a kind of Contingency Analysis of Power Systems method considering prepared auto restart as claimed in claim 3, which is characterized in that institute
Backup auto-activating device tables of data is stated including at least backup auto-activating device ID, working power side bus, stand-by power supply side bus, prepared auto restart dress
Type is set, throws and moves back state and prepared auto restart electric parameter.
5. a kind of Contingency Analysis of Power Systems method considering prepared auto restart as claimed in claim 3, which is characterized in that institute
It states and checks whether working power side works normally execution following steps before：
（1）Topological analysis is carried out to power grid, checks for decompression node；
（2）If there are decompression node, all decompression nodes form decompression set of node；If decompression node is not present, it is transferred to flow
（7）；
（3）The node in decompression set of node is taken out successively, inquires backup auto-activating device tables of data, and whether be examined in has and taking-up
The associated prepared auto restart configuration of decompression node；
（4）If the decompression node taken out has whether configuration prepared auto restart, verification prepared auto restart standby electricity source have operating current.
6. a kind of Contingency Analysis of Power Systems method considering prepared auto restart as claimed in claim 3, which is characterized in that institute
It states and checks whether working power side works normally execution following steps later：
（5）If being unsatisfactory for prepared auto restart input strategy, it is transferred to the step (3)；If meeting prepared auto restart input strategy, by prepared auto restart
Device is put into power grid, this decompression node reconnects in power grid, restores electricity；By node, it is moved from decompression set of node
It removes, and 1 is set to by the variable NetFig whether network structure changes is characterized；
（6）In decompression set of node after all node analyses, whether verification NetFig is 1；If NetFig is equal to 1, net is indicated
Network structure is changed, and new decompression set of node is generated, and is transferred to flow (3)；If NetFig is not equal to 1, it is transferred to flow（7）；
（7）Terminate.
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| CN109167357A (en) * | 2018-10-18 | 2019-01-08 | 国网山东省电力公司泰安供电公司 | A method of the optimization power grid static security analysis time |
| CN109167354A (en) * | 2018-10-08 | 2019-01-08 | 国网天津市电力公司电力科学研究院 | A kind of power grid forecast failure parallel parsing calculation method based on exchange files |
| CN109214707A (en) * | 2018-09-28 | 2019-01-15 | 广东电网有限责任公司 | A kind of power grid 110kV bus N-1 risk automatically scanning analysis method |
| CN109460896A (en) * | 2018-09-28 | 2019-03-12 | 广东电网有限责任公司 | A kind of power grid 110kV route N-1 risk automatically scanning analysis method |
| CN110829580A (en) * | 2019-11-14 | 2020-02-21 | 国网湖南省电力有限公司 | Switching method of spare power automatic switching device of new energy power plant grid-connected substation |
| CN110955967A (en) * | 2019-11-26 | 2020-04-03 | 广东电网有限责任公司 | Modeling method and system for bus tie spare power automatic switching in BPA |
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| CN109460896A (en) * | 2018-09-28 | 2019-03-12 | 广东电网有限责任公司 | A kind of power grid 110kV route N-1 risk automatically scanning analysis method |
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| CN109214707B (en) * | 2018-09-28 | 2021-10-08 | 广东电网有限责任公司 | Power grid 110kV bus N-1 risk automatic scanning analysis method |
| CN109167354A (en) * | 2018-10-08 | 2019-01-08 | 国网天津市电力公司电力科学研究院 | A kind of power grid forecast failure parallel parsing calculation method based on exchange files |
| CN109167354B (en) * | 2018-10-08 | 2022-02-22 | 国网天津市电力公司电力科学研究院 | Power grid expected fault parallel analysis and calculation method based on file exchange |
| CN109167357A (en) * | 2018-10-18 | 2019-01-08 | 国网山东省电力公司泰安供电公司 | A method of the optimization power grid static security analysis time |
| CN110829580A (en) * | 2019-11-14 | 2020-02-21 | 国网湖南省电力有限公司 | Switching method of spare power automatic switching device of new energy power plant grid-connected substation |
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| CN113824110B (en) * | 2021-07-29 | 2023-09-26 | 南方电网科学研究院有限责任公司 | Power grid fault static analysis method comprising spare power automatic switching strategy |
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