CN105119268A - Method for sorting transient severe faults of power system - Google Patents
Method for sorting transient severe faults of power system Download PDFInfo
- Publication number
- CN105119268A CN105119268A CN201510396216.9A CN201510396216A CN105119268A CN 105119268 A CN105119268 A CN 105119268A CN 201510396216 A CN201510396216 A CN 201510396216A CN 105119268 A CN105119268 A CN 105119268A
- Authority
- CN
- China
- Prior art keywords
- fault
- screening
- catastrophe failure
- described step
- point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention relates to a method for sorting transient severe faults of a power system. The method includes a first step of trend data and stable calculating data; a second step of generating a power grid model, a third step of analyzing ground state trend, a fourth step of initially forming predefined faults, a fifth step of determining and sorting at a post-fault balance point, a sixth step of determining and sorting inertia transient, a seventh step of determining and sorting post-inertia transient, an eighth step of determining and sorting an exit point, a ninth step of determining and sorting inertia transient of a minimal gradient point, a tenth step of determining and sorting post-inertia transient of the minimal gradient point, an eleventh step of determining and sorting the minimal gradient point, a twelfth step of determining and sorting faults under an unstable equilibrium point, and a thirteenth step of obtaining a related severe fault list. Content determination standards of different important nodes during a fault trajectory process are fully considered from aspects of the post-fault balance point, the exit point, the minimal gradient point and the related unstable equilibrium point through calculation, and reliability and accuracy of fault scanning are ensured.
Description
Technical field
The present invention relates to Transient-State Analysis of Power System field, be specifically related to the method for a kind of electrical power system transient catastrophe failure screening.
Background technology
In power system analysis, particularly in safety analysis, fault scanning is a very important link, but all carries out security and stability analysis to fault whole in the fault set elected in advance, is obviously unpractical for actual large scale electric network.After a kind of feasible method carries out prescan to fault exactly, then sequence screening is carried out to fault, by wherein relatively serious or the fault of electric power system unstability may be caused to analyze, fault filtering not serious is in a large number gone out.In electric power system, along with the generation cannot predicting accident, the transient process that can electric power system occur after withstanding accident, then be transitioned into new and stable state; The main contents of Here it is security analysis of electric power system.Judging that can a system withstand the transient process after accident by electric power system transient security analysis method, is the category of dynamic security analysis.
Contingency analysis analyzes whether operating electric power system can continue to keep normal condition operation method when there is accident in security analysis of electric power system.Wherein accident is the accident of the empirical assumption according to operations staff.The result of these accidents, or one or several power circuit is disconnected, or transformer, generator, load are disconnected, or there is the combination of above situation.When whether system is exactly safely the accident by computer calculate various supposition more than occurring when determining to occur accident, whether has circuit overload or exceed permission transmission limit, whether having node overvoltage, it is stable etc. whether system can lose.If there is not above-mentioned situation, the current operating conditions of system is exactly safe, otherwise is exactly unsafe.
Contingency analysis refers to fault for the power system component preset and combination, determines their impacts on safe operation of power system.When defining forecast failure collection, adopt physical classification mode; In analytic process, fault harm degree is classified.Early stage N-1 formula fault of only carrying out is selected and analyzes, such as in order to solve prior art in long problem N-1 fault scanning computing time, there is the calculation features of retouching in conjunction with large-scale power system N-1 fault, by adopting Model Reuse and corrected Calculation etc., a kind of Program Realizing Method of carrying out rapid scanning for large-scale power system N-1 fault is provided, significantly improve computational speed, refer to Chinese invention patent (application number 201010571859.X).But along with the enhancing of electric network composition and the expansion of scale, dispatcher more payes attention to multiple faults analysis.If but carry out N-2 or N-3 scan mode, be difficult technically.Therefore adopt forecast failure set mode to replace N-1 scan mode.
Existing contingency analysis method, the main direct method mode that adopts carries out transient fault analysis, has not considered the stability of rear inertia transient period; And in reality, be applied to the not consideration that the multiple faults in actual electric network is arranged at present, and just consider merely operational failure aggregate manner and solve, not substantial solution automatic screening and multiple faults is set, also just single failure carries out arranging and analyzes; Do not met the requirement of current electric grid scale development, and multiple faults analysis is also more and more paid attention to.So transient fault analysis more should apply main raising Contingency screening reliability, accuracy, the aspects such as oneself multiple faults compound mode can also be taken into account simultaneously.
Summary of the invention
In view of this, the object of this invention is to provide the method for a kind of electrical power system transient catastrophe failure screening.The method not only considers stability during inertia transient period, but also stability when can consider rear inertia phase; By 0 ~ 5 second inertia transient period and after 5 ~ 20 seconds inertia transient period two combined factors consider.Consider at fault scanning algorithm with in realizing from post-fault equilibrium, effusion point place, minimal gradient place and relevant unstable equilibrium place; Thus ensure the content criterion fully taking into account different important node in fault trajectory process.Reasonably reduce unnecessary analytical calculation amount, namely have ignored the fault little to electric network influencing, taken into account again catastrophe failure simultaneously, only detailed analysis is done to the most serious, the serious and most possible fault occurred.
The present invention adopts following scheme to realize: a kind of method of electrical power system transient catastrophe failure screening, comprises the following steps:
Step S1: flow data and stability Calculation data;
Step S2: read in the data of resolving in described step S1, in order to generate electric network model;
Step S3: carry out ground state tidal current analysis according to the electric network model generated in step S2, and ensure that tidal current analysis calculates convergence;
Step S4: form initial predefine fault;
Step S5: balance point place after a failure carries out judging and screens;
Step S6: to judging in described step S5 that the fault obtained with screening is carried out inertia transient state and judged and screening;
Step S7: carry out judging to described step S6 and screen remaining fault and carry out rear inertia transient state and judge and screen;
Step S8: the fault obtained described step S6 and step S7 is carried out effusion point and judged and screening;
Step S9: to judging in described step S8 that the fault minimal gradient point inertia transient state obtained with screening judges and screening;
Step S10: after the fault minimal gradient point obtain judgement in described step S9 and screening, inertia transient state judges and screening;
Step S11: the fault obtained described step S9 and step S10 is carried out minimal gradient point and judged and screening;
Step S12: breakdown judge and screening under unstable equilibrium point are carried out to the fault filtered out in step S11;
Step S13: using screening the fault that obtains in step S12 as catastrophe failure, obtain relevant catastrophe failure list.
Further, described step S2 is specially: adopt memory database technology, the BPADAT file of flow data and the BPASWI file of stable data are resolved, warehouse-in memory database; Set up electric network model, set up model can carry out electrical analysis, and wherein electrical analysis comprises tidal current analysis and transient analysis.
Further, described step S4 is specially: when the tidal current analysis of described step S3 calculates convergence, according to self-defined fault condition, generates initial pre-fault; Wherein self-defined fault condition comprises multiple faults definition.
Further, described step S5 is specially: in conjunction with the energy function direct method in transient analysis, then calculates the balance point after breaking down from fault clearance point, then adopts the fault at Newton method calculated equilibrium point place, if the fault at this balance point place can be obtained, then retain this fault; Otherwise filter out this fault.
Further, described step S6 and step S7 all judges in order to carry out being in effusion point place inertia, the concrete grammar that wherein said step S6 carries out the judgement of inertia transient state and Contingency screening is: to the fault retained in described step S5, adopt energy margin to carry out screening as breakdown judge benchmark, filter out catastrophe failure; Remaining not serious fault after screening is entered step S7 and carries out the judgement of rear inertia transient state and Contingency screening; After described step S7 judges screening, whether remaining not serious fault is stablized, and the fault not meeting catastrophe failure condition is got rid of, the fault meeting catastrophe failure condition is entered in step S8 together with being judged as the fault of catastrophe failure in described step S6.
Further, described step S8 effusion point judges to be specially with screening process: a little calculating the described minimal gradient point a little located of overflowing by overflowing, judging in-problem minimal gradient point, the breakdown judge this effusion pointed out is catastrophe failure; By fault in steps in S6 and step S7 judge, the Contingency screening meeting catastrophe failure is entered in step S9 as catastrophe failure collection.
Further, described step S9 carries out the judgement of inertia transient state and screening under minimal gradient point place, adopts energy margin to carry out screening as breakdown judge benchmark, filters out the catastrophe failure in described step S8; Remaining not serious fault after screening is entered the rear inertia transient state that step S10 carries out under minimal gradient point place to judge and Contingency screening; After described step S10 judges screening, whether remaining not serious fault is stablized, the fault not meeting catastrophe failure condition is got rid of, the fault meeting catastrophe failure condition is entered in step S11 together with being judged as the fault of catastrophe failure in described step S9.
Further, described step S11 carry out minimal gradient point judge with screening concrete grammar be: calculate unstable equilibrium point by minimal gradient point, will occur that the breakdown judge of numerical value convergence problem is that catastrophe failure screens.
Further, described step S12 is specially: utilize energy margin method to judge the stability of unstable equilibrium point place fault the fault filtered out in described step 11, in order to filter out catastrophe failure, catastrophe failure is thoroughly separated with not serious fault.
In sum, the present invention can not only realize multiple faults analytical applications, can also accurately and rapid screening go out reliable catastrophe failure; In Consideration, prior art method basis achieves expansion, the perfect further indication range of Contingency screening.First, adopt electric network model generation technique: utilize memory database technology, by resolving BPADAT file and BPASWI file, realize electric network model to set up, thus by electric network model parameter persistence, ensure that grid model data durability, the electric network model for future changes, can carry out on this basis setting up and expanding, thus decrease the workload of electric network model foundation.Meanwhile, carry out the error correction of model parameter by program, also ensure that the accuracy that electric network model generates and integrality, avoid failing to fill in of unnecessary parameter to produce with duplicate keys.Secondly, the combination carrying out multiple faults generates automatically: allow the combination definition carrying out multiple faults, make carrying out predefine malfunction analysis procedure, can consider multiple faults, thus meets large scale electric network and research and analyse requirement; Decrease the defect problem analyzed by single fault, or determine multiple faults problem by observing single fault analysis.Finally, catastrophe failure generates result more accurately with reliable: screen new method by electrical power system transient catastrophe failure, calculative fault is carried out multi-level screening, decrease the calculating of unnecessary fault, decrease the amount of calculation of transient analysis, improve computational speed.Complete being separated of catastrophe failure and noncritical failure under the screening layer by layer of the different judge index under different levels, therefore ensure that reliability and the accuracy of screened catastrophe failure; Thus ensure that analyst can carry out transient stability analysis effectively, analyze stabilization of power grids problem more efficiently.
Compared with prior art, beneficial effect of the present invention is: electric network model generates by (1), achieves the parsing to BPADAT and BPASWI file, data is effectively combined, avoid generator dynamic model mismatch problem, achieve the visualization processing of electric network model parameter; (2) effectively can carry out the self-defined combination of multiple faults, reduce manual operation, as long as impose a condition just automatically can produce combination.(3) rate of failing to report of fault can be ensured, but think catastrophe failure by not serious fault; And ensure the rate of false alarm of fault, catastrophe failure is thought not serious fault; Reliable Contingency screening should ensure that wrong report number is few as much as possible, and rate of failing to report should ensure zero.
Accompanying drawing explanation
Fig. 1 is system schematic block diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
A kind of method that the present embodiment provides electrical power system transient catastrophe failure to screen, as shown in Figure 1, comprises the following steps:
Step S1: flow data and stability Calculation data;
Step S2: read in the data of resolving in described step S1, in order to generate electric network model;
Step S3: carry out ground state tidal current analysis according to the electric network model generated in step S2, and ensure that tidal current analysis calculates convergence;
Step S4: form initial predefine fault;
Step S5: balance point place after a failure carries out judging and screens;
Step S6: to judging in described step S5 that the fault obtained with screening is carried out inertia transient state and judged and screening;
Step S7: carry out judging to described step S6 and screen remaining fault and carry out rear inertia transient state and judge and screen;
Step S8: the fault obtained described step S6 and step S7 is carried out effusion point and judged and screening;
Step S9: to judging in described step S8 that the fault minimal gradient point inertia transient state obtained with screening judges and screening;
Step S10: after the fault minimal gradient point obtain judgement in described step S9 and screening, inertia transient state judges and screening;
Step S11: the fault obtained described step S9 and step S10 is carried out minimal gradient point and judged and screening;
Step S12: breakdown judge and screening under unstable equilibrium point are carried out to the fault filtered out in step S11;
Step S13: using screening the fault that obtains in step S12 as catastrophe failure, obtain relevant catastrophe failure list.
In the present embodiment, described step S2 is specially: adopt memory database technology, the BPADAT file of flow data and the BPASWI file of stable data are resolved, warehouse-in memory database; Set up electric network model, set up model can carry out electrical analysis, and wherein electrical analysis comprises tidal current analysis and transient analysis.
In the present embodiment, described step S4 is specially: when the tidal current analysis of described step S3 calculates convergence, according to self-defined fault condition, generates initial pre-fault; Wherein self-defined fault condition comprises multiple faults definition.
In the present embodiment, described step S5 is specially: in conjunction with the energy function direct method in transient analysis, then calculates the balance point after breaking down from fault clearance point, then adopts the fault at Newton method calculated equilibrium point place, if the fault at this balance point place can be obtained, then retain this fault; Otherwise filter out this fault.
In the present embodiment, described step S6 and step S7 all judges in order to carry out being in effusion point place inertia, the concrete grammar that wherein said step S6 carries out the judgement of inertia transient state and Contingency screening is: to the fault retained in described step S5, adopt energy margin to carry out screening as breakdown judge benchmark, filter out catastrophe failure; Remaining not serious fault after screening is entered step S7 and carries out the judgement of rear inertia transient state and Contingency screening; After described step S7 judges screening, whether remaining not serious fault is stablized, and the fault not meeting catastrophe failure condition is got rid of, the fault meeting catastrophe failure condition is entered in step S8 together with being judged as the fault of catastrophe failure in described step S6.
In the present embodiment, described step S8 effusion point judges to be specially with screening process: a little calculating the described minimal gradient point a little located of overflowing by overflowing, judging in-problem minimal gradient point, the breakdown judge this effusion pointed out is catastrophe failure; By fault in steps in S6 and step S7 judge, the Contingency screening meeting catastrophe failure is entered in step S9 as catastrophe failure collection.
In the present embodiment, described step S9 carries out the judgement of inertia transient state and screening under minimal gradient point place, adopts energy margin to carry out screening as breakdown judge benchmark, filters out the catastrophe failure in described step S8; Remaining not serious fault after screening is entered the rear inertia transient state that step S10 carries out under minimal gradient point place to judge and Contingency screening; After described step S10 judges screening, whether remaining not serious fault is stablized, the fault not meeting catastrophe failure condition is got rid of, the fault meeting catastrophe failure condition is entered in step S11 together with being judged as the fault of catastrophe failure in described step S9.
In the present embodiment, described step S11 carry out minimal gradient point judge with screening concrete grammar be: calculate unstable equilibrium point by minimal gradient point, will occur that the breakdown judge of numerical value convergence problem is that catastrophe failure screens.
In the present embodiment, described step S12 is specially: utilize energy margin method to judge the stability of unstable equilibrium point place fault the fault filtered out in described step 11, in order to filter out catastrophe failure, catastrophe failure is thoroughly separated with not serious fault.
In the present embodiment, the method of described electrical power system transient catastrophe failure screening is specially: first, set up BPA datarams database, namely BPADAT file and flow data file and BPASWI file are stablized the warehouse-in of data file, namely resolve flow data and stable data model, form corresponding electric network model by memory database technology.
Secondly, on the basis of electric network model, carry out ground state tidal current analysis, checking trend convergence, and whether stablize, avoid the error resistance of initial model.On the basis that ground state tidal current analysis is complete, carry out Fault Pre definition, carry out condition setting fault according to the corresponding possible faulty equipment of selection; Predefine fault set (containing multiple faults) is generated by predetermined condition also condition capable of being combined.
When fault has made a reservation for, by the failure condition at failure judgement back balance point place, filter out possible catastrophe failure; After these faults occur, the stable region of system is very little, or there is not the rear stable equilibrium point of fault generation.Application requirement is met in order to make direct method, (1) fault generation back balance point asymptotically stability must be ensured, (2) there is stable balance point before and after fault and close to each other, in the stable region produced of the stable equilibrium point that the stable equilibrium point before (3) fault falls after a failure.The failure condition interpretation at balance point place employs two indices and carries out interpretation, i.e. the maximum iterations at balance point place and maximum phase angle difference; If restrained in limited step number, but iterations has exceeded maximum iteration time, then not think and restrain; If maximum phase angle difference exceedes given threshold value, then illustrate that the balance and stability after exceeding fault is overseas, then do not restrain; Filter out possible catastrophe failure list thus.
In possible catastrophe failure list basis, draw the energy margin of inertia transient state under effusion point by energy function analytical method, namely by this index as failure judgement; When this energy margin value is less than given threshold value, then think catastrophe failure, enter next judgement; If be greater than, then entered into rear inertia transient state and judge.Then inertia transient state judges it is that process inertia transient state judges not to think to be serious fault; Two indices is used to detect possible catastrophe failure in this process, kinetic energy values when namely the energy margin value of inertia transient state and the system failure are removed; If energy margin value is greater than certain value given and kinetic energy values is less than certain set-point, then can thinks and compare catastrophe failure.
Then, after the inertia and rear inertia transient state that complete the some place that overflows judge and screen, solve effusion point again, and from then on start the minimal gradient point of solving system, problematic gradient point is screened, this completes judgement and the screening at effusion point place, just can enter into the judgement of next link.
After the breakdown judge completing effusion point place and screening, the inertia transient energy margin value under utilizing energy function analytical method to draw minimal gradient point, in this, as index.If judged for catastrophe failure enters the next one, otherwise enter the judgement of rear inertia transient state, the rear inertia that operate is located with effusion point judges the same, is that result is more accurate; Filter out catastrophe failure thus and enter into next judgement.
Under the above-mentioned result completed, then detect convergence when relevant unstable balance point place calculates; Be initial valuation with minimal gradient point during calculating; As index, catastrophe failure is judged using maximum iterations and maximum differential seat angle (differential seat angle maximum between minimal gradient point and unstable equilibrium point); If the number of times of iteration is less than given number of times, be then judged to be catastrophe failure; If maximum differential seat angle is greater than set-point, be then judged to be catastrophe failure.
Finally, by the above-mentioned catastrophe failure screened, the breakdown judge under unstable equilibrium point and screening is entered; Here be by result of calculation more precision, the principle of use judges the same with the inertia related to and rear inertia transient fault above; Judge the stable case in rear transient state situation; Finally, the high catastrophe failure of reliability and not serious error listing is filtered out; Thus ensure that validity and the efficiency of transient analysis, improve computational speed.
The present invention more stresses to monitor with index based on controlling in transient state direct analysis various process, such as inertia transient state situation after effusion point place not only considers inertia transient state but also considers.Simultaneously in conjunction with prior art, realize the application that multiple faults analyzes demand, and rapid screening goes out reliable catastrophe failure, avoids failing to report and wrong report situation of unnecessary catastrophe failure.In effect, the present invention more fits the application of actual transient stability analysis, and the catastrophe failure result of screening is more reasonable, decreases the amount of calculation of noncritical failure.Meanwhile, in electric network model process, adopt memory database technology, electrical network parameter is carried out persistence process, and the error correction of model parameter, eliminate artificial grid model data typing link, increase work efficiency.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (9)
1. a method for electrical power system transient catastrophe failure screening, is characterized in that comprising the following steps:
Step S1: flow data and stability Calculation data;
Step S2: read in the data of resolving in described step S1, in order to generate electric network model;
Step S3: carry out ground state tidal current analysis according to the electric network model generated in step S2, and ensure that tidal current analysis calculates convergence;
Step S4: form initial predefine fault;
Step S5: balance point place after a failure carries out judging and screens;
Step S6: to judging in described step S5 that the fault obtained with screening is carried out inertia transient state and judged and screening;
Step S7: carry out judging to described step S6 and screen remaining fault and carry out rear inertia transient state and judge and screen;
Step S8: the fault obtained described step S6 and step S7 is carried out effusion point and judged and screening;
Step S9: to judging in described step S8 that the fault minimal gradient point inertia transient state obtained with screening judges and screening;
Step S10: after the fault minimal gradient point obtain judgement in described step S9 and screening, inertia transient state judges and screening;
Step S11: the fault obtained described step S9 and step S10 is carried out minimal gradient point and judged and screening;
Step S12: breakdown judge and screening under unstable equilibrium point are carried out to the fault filtered out in step S11;
Step S13: using screening the fault that obtains in step S12 as catastrophe failure, obtain relevant catastrophe failure list.
2. the method for a kind of electrical power system transient catastrophe failure screening according to claim 1, is characterized in that
Described step S2 is specially: adopt memory database technology, the BPADAT file of flow data and the BPASWI file of stable data are resolved, warehouse-in memory database; Set up electric network model, set up model can carry out electrical analysis, and wherein electrical analysis comprises tidal current analysis and transient analysis.
3. the method for a kind of electrical power system transient catastrophe failure screening according to claim 1, it is characterized in that: described step S4 is specially: when the tidal current analysis of described step S3 calculates convergence, according to self-defined fault condition, generate initial pre-fault; Wherein self-defined fault condition comprises multiple faults definition.
4. the method for a kind of electrical power system transient catastrophe failure screening according to claim 1, it is characterized in that: described step S5 is specially: in conjunction with the energy function direct method in transient analysis, then the balance point after breaking down is calculated from fault clearance point, adopt the fault at Newton method calculated equilibrium point place again, if the fault at this balance point place can be obtained, then retain this fault; Otherwise filter out this fault.
5. the method for a kind of electrical power system transient catastrophe failure screening according to claim 1, it is characterized in that: described step S6 and step S7 all judges in order to carry out being in effusion point place inertia, the concrete grammar that wherein said step S6 carries out the judgement of inertia transient state and Contingency screening is: to the fault retained in described step S5, adopt energy margin to carry out screening as breakdown judge benchmark, filter out catastrophe failure; Remaining not serious fault after screening is entered step S7 and carries out the judgement of rear inertia transient state and Contingency screening; After described step S7 judges screening, whether remaining not serious fault is stablized, and the fault not meeting catastrophe failure condition is got rid of, the fault meeting catastrophe failure condition is entered in step S8 together with being judged as the fault of catastrophe failure in described step S6.
6. the method for a kind of electrical power system transient catastrophe failure screening according to claim 1, it is characterized in that: described step S8 effusion point judges to be specially with screening process: a little calculate the described minimal gradient point a little located of overflowing by overflowing, judge in-problem minimal gradient point, the breakdown judge this effusion pointed out is catastrophe failure; By fault in steps in S6 and step S7 judge, the Contingency screening meeting catastrophe failure is entered in step S9 as catastrophe failure collection.
7. the method for a kind of electrical power system transient catastrophe failure screening according to claim 1, it is characterized in that: described step S9 carries out the judgement of inertia transient state and screening under minimal gradient point place, adopt energy margin to carry out screening as breakdown judge benchmark, filter out the catastrophe failure in described step S8; Remaining not serious fault after screening is entered the rear inertia transient state that step S10 carries out under minimal gradient point place to judge and Contingency screening; After described step S10 judges screening, whether remaining not serious fault is stablized, the fault not meeting catastrophe failure condition is got rid of, the fault meeting catastrophe failure condition is entered in step S11 together with being judged as the fault of catastrophe failure in described step S9.
8. the method for a kind of electrical power system transient catastrophe failure screening according to claim 1, it is characterized in that: described step S11 carries out the judgement of minimal gradient point and with the concrete grammar of screening is: calculate unstable equilibrium point by minimal gradient point, will occur that the breakdown judge of numerical value convergence problem is that catastrophe failure screens.
9. the method for a kind of electrical power system transient catastrophe failure screening according to claim 1, it is characterized in that: described step S12 is specially: utilize energy margin method to judge the stability of unstable equilibrium point place fault the fault filtered out in described step 11, in order to filter out catastrophe failure, catastrophe failure is thoroughly separated with not serious fault.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510396216.9A CN105119268A (en) | 2015-07-08 | 2015-07-08 | Method for sorting transient severe faults of power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510396216.9A CN105119268A (en) | 2015-07-08 | 2015-07-08 | Method for sorting transient severe faults of power system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105119268A true CN105119268A (en) | 2015-12-02 |
Family
ID=54667194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510396216.9A Pending CN105119268A (en) | 2015-07-08 | 2015-07-08 | Method for sorting transient severe faults of power system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105119268A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451441A (en) * | 2016-11-25 | 2017-02-22 | 国网浙江省电力公司电力科学研究院 | Method for screening N-k fault set of power system rapidly |
| CN106786529A (en) * | 2016-12-23 | 2017-05-31 | 国网山西省电力公司电力科学研究院 | A kind of distributed static security analysis method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007181387A (en) * | 2005-12-01 | 2007-07-12 | Chubu Electric Power Co Inc | Method for determining power system transient stability and its equipment |
| CN103970589A (en) * | 2014-05-09 | 2014-08-06 | 国家电网公司 | Long-dynamic-process simulation method based on PSS/E trend API |
| CN103985065A (en) * | 2014-05-20 | 2014-08-13 | 天津大学 | Method for evaluating electric power system risk based on fault pre-scanning |
-
2015
- 2015-07-08 CN CN201510396216.9A patent/CN105119268A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007181387A (en) * | 2005-12-01 | 2007-07-12 | Chubu Electric Power Co Inc | Method for determining power system transient stability and its equipment |
| CN103970589A (en) * | 2014-05-09 | 2014-08-06 | 国家电网公司 | Long-dynamic-process simulation method based on PSS/E trend API |
| CN103985065A (en) * | 2014-05-20 | 2014-08-13 | 天津大学 | Method for evaluating electric power system risk based on fault pre-scanning |
Non-Patent Citations (1)
| Title |
|---|
| 余旭阳: "电力系统暂态稳定概率分级及控制的研究", 《中国优秀博硕士学位论文全文数据库（博士）》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451441A (en) * | 2016-11-25 | 2017-02-22 | 国网浙江省电力公司电力科学研究院 | Method for screening N-k fault set of power system rapidly |
| CN106451441B (en) * | 2016-11-25 | 2019-02-05 | 国网浙江省电力公司电力科学研究院 | A kind of rapid screening method of electric system N-k fault set |
| CN106786529A (en) * | 2016-12-23 | 2017-05-31 | 国网山西省电力公司电力科学研究院 | A kind of distributed static security analysis method |
| CN106786529B (en) * | 2016-12-23 | 2019-05-03 | 国网山西省电力公司电力科学研究院 | A kind of distribution static security analysis method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Danilczyk et al. | Angel: An intelligent digital twin framework for microgrid security | |
| Bernabeu et al. | Methodology for a security/dependability adaptive protection scheme based on data mining | |
| Wang et al. | Impacts of operators’ behavior on reliability of power grids during cascading failures | |
| CN104573906B (en) | System and method for analyzing oscillation stability in power transmission system | |
| CN105914755B (en) | Electrical power system dynamic reactive power Optimal Configuration Method and system | |
| CN103985066A (en) | Method for evaluating power system static risk based on hybrid power flow | |
| CN103310307B (en) | Based on the Power System Planning scheme flexibility appraisal procedure of probability distributive function | |
| CN111143764B (en) | Distribution network reliability assessment method with complex structure based on diffusion theory | |
| CN104901306A (en) | Power grid operation safety margin calculating method taking cascading faults into consideration | |
| CN109559019B (en) | Power system dynamic security assessment method based on risk index | |
| CN106655292A (en) | Ultra-high-voltage AC/DC hybrid grid stability analysis method | |
| Clements et al. | Systemic modelling and integrated assessment of asset management strategies and staff constraints on distribution network reliability | |
| CN108565852A (en) | A kind of Contingency screening and ranking method of the bulk power grid Voltage Stability Evaluation of three progress step by step | |
| CN109118105A (en) | The risk analysis method and system of power grid mass-sending failure under mountain fire disaster | |
| Arava et al. | Analyzing the static security functions of a power system dynamic security assessment toolbox | |
| CN109613372B (en) | Power grid fault diagnosis method based on multi-element power grid database | |
| Li et al. | An integrated online dynamic security assessment system for improved situational awareness and economic operation | |
| CN105119268A (en) | Method for sorting transient severe faults of power system | |
| Anuradha et al. | Voltage-loss sensitivity based approach for optimal DG placement in distribution networks | |
| CN104867063A (en) | Power grid multiple major failure recognition method based on a linear weighting method | |
| Bajaj et al. | A single index for voltage quality ranking in the distribution power networks using multiple criteria decision‐making | |
| CN109683040B (en) | Method, device and equipment for detecting reliability of flexible direct-current transmission converter valve | |
| Sun et al. | A new framework for the wind power curtailment and absorption evaluation | |
| Majdara et al. | Development and application of a risk assessment tool | |
| Pierre et al. | A framework to model and analyze electric grid cascading failures to identify critical nodes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151202 |