CN108548990A - Telegram in reply Proposals method based on electric network fault behavioural analysis - Google Patents
Telegram in reply Proposals method based on electric network fault behavioural analysis Download PDFInfo
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- CN108548990A CN108548990A CN201810297269.9A CN201810297269A CN108548990A CN 108548990 A CN108548990 A CN 108548990A CN 201810297269 A CN201810297269 A CN 201810297269A CN 108548990 A CN108548990 A CN 108548990A
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- failure
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/088—Aspects of digital computing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Abstract
The telegram in reply Proposals method based on electric network fault behavioural analysis that the invention discloses a kind of; based on intelligent grid Dispatching Control System; nature of trouble is determined according to recorded wave file, remote signalling displacement, SOE and protection signal; combination failure circuit according to nature of trouble and send rule to provide and dispatches telegram in reply Proposals by force.Present invention realization quickly accurately judges electric network fault property, positions electric network fault reason in time for dispatching of power netwoks operations staff, and whether send a telegram in reply and provide reliable technical support.
Description
Technical field
The invention belongs to Power System Intelligent analysis and control technology fields, more particularly to one kind being based on electric network fault behavior
The telegram in reply Proposals method of analysis.
Background technology
At present under grid fault conditions, protects letter system and information, SOE data, protection act letter are mainly conjugated by remote signalling
Number and failure bulletin nature of trouble is tentatively judged, the failure phase of circuit often can not be accurately judged based on these data
Not and situation is overlapped, to which effective aid decision can not be provided for the telegram in reply of power grid.
Therefore it needs to study a kind of telegram in reply Proposals method, reliable telegram in reply strategy is provided for scheduling, to faulty line
Implement strong power transmission after effective failure, realize power grid fast power restoration, retrieve the loss of supply load, ensures power grid security.
Invention content
Goal of the invention：In view of the above problems, the present invention proposes that a kind of telegram in reply strategy based on electric network fault behavioural analysis is built
View method.
Technical solution：To achieve the purpose of the present invention, the technical solution adopted in the present invention is：One kind being based on electric network fault
The telegram in reply Proposals method of behavioural analysis, including step：
(1) analog quantity channel for protecting recording is modeled；
(2) after grid collapses, remote signalling displacement, SOE and protection signal, quick failure judgement circuit are received；
(3) automatic-calling is associated with the protection recorded wave file of the faulty line；
(4) determine that failure is separate according to protection recorded wave file record；
(5) the separate determination of failure determines nature of trouble in conjunction with remote signalling displacement, SOE and protection signal；
(6) rule is sent to provide scheduling telegram in reply Proposals according to nature of trouble and by force.
The step (4) includes step：
(4.1) specific fault moment and corresponding failure are determined according to the difference of phase currents of protection recorded wave file record
Equipment, and further determine that the analog quantity channel of faulty equipment；
(4.2) based on determining fault moment and analog quantity channel, to the previous cycle of failure and failure the latter cycle
Discrete sampling point, using difference Fourier space algorithm calculate failure before and after analog quantity complex values；
(4.3) positive sequence, negative phase-sequence and zero-sequence current value after calculating failure are converted by phase sequence, by sequence current failure component
Comparison analysis determine failure it is separate.
The analog quantity channel includes 8 three-phase voltage, residual voltage, three-phase current and zero-sequence current analog quantity channels.
Advantageous effect：The present invention the telegram in reply Proposals method based on electric network fault behavioural analysis, according to recorded wave file,
Remote signalling displacement, SOE and protection signal are accurately determined nature of trouble, are power grid tune by nature of trouble and strong power transmission rule
It spends operations staff and reliable telegram in reply Proposals is provided, realize power grid fast power restoration, ensure safe operation of electric network.
Description of the drawings
Fig. 1 is the flow diagram of the method for the present invention；
Fig. 2 is the logical schematic of the method for the present invention.
Specific implementation mode
Technical scheme of the present invention is further described with reference to the accompanying drawings and examples.
As shown in Figure 1, the telegram in reply Proposals method of the present invention based on electric network fault behavioural analysis, including it is following
Step：
Before S1, grid collapses, to protecting the analog quantity channel of recording to model；
After S2, grid collapses, remote signalling displacement, SOE and protection signal are received, quickly judges faulty line；
S3, automatic-calling are associated with the protection recorded wave file of the faulty line；
S4, determine that specific fault moment and corresponding failure are set according to the difference of phase currents of protection recorded wave file record
It is standby, and further determine that total 8 analog quantitys of three-phase voltage, residual voltage, three-phase current and the zero-sequence current of faulty equipment are logical
Road；
S5, based on determining fault moment and 8 analog quantity channels, to the previous cycle of failure and failure the latter cycle
Discrete sampling point, using difference Fourier space algorithm calculate failure before and after three-phase voltage, residual voltage and three-phase current,
The complex values of zero-sequence current；
S6, positive sequence, negative phase-sequence and zero-sequence current value after calculating failure are converted by phase sequence, by sequence current failure component
Analysis is compared to determine that failure is separate；
The separate determination of S7, failure determines nature of trouble in conjunction with remote signalling displacement, SOE and protection signal；
S8, according to nature of trouble and strong rule is sent to provide scheduling telegram in reply Proposals.
As shown in Fig. 2, in specific implementation process, according to nature of trouble and send rule to provide by force and dispatch telegram in reply Proposals
Detailed process it is as follows：
S1, judge whether circuit is single-phase fault according to recorded wave file, it is no to then follow the steps if so then execute step s2
s3；
S2, judge that the circuit whether there is historical failure, it is no to then follow the steps s5 if so then execute step s4；
S3, judge whether there is reclosing actuating signal, if then can not failure judgement property, it is no to then follow the steps s6；
S4, judge whether last time failure is single-phase fault, it, otherwise can not failure judgement property if so then execute step s7；
Whether s5, comprehensive intelligent alarm module judge that circuit is transient fault or permanent fault, are held if judging
Row step s8, it is no to then follow the steps s9；
S6, judge whether that direct three jump, it, otherwise can not failure judgement property if so then execute step s10；
S7, reclosing actuating signal is judged whether there is, it is no to then follow the steps s12 if so then execute step s11；
S8, comprehensive intelligent alarm module judge that circuit is transient fault, then the circuit is general transient fault, otherwise
The circuit is general single-phase permanent fault, can be sent by force in principle in the short period primary；
S9, SOE signals are judged whether there is, it is no to then follow the steps s14 if so then execute step s13；
S10, historical failure is judged whether, it is no to then follow the steps s16 if so then execute step s15；
S11, determine whether permanent fault, it, otherwise can not failure judgement property if so then execute step s17；
S12, judge whether that direct three jump, it, otherwise can not failure judgement property if so then execute step s18；
S13, judge whether the state of the last one SOE signal of switch is conjunction, if then the circuit is general instantaneity
Failure, otherwise the circuit is general single-phase permanent fault, can be sent by force in principle in the short period primary；
S14, judge whether to obtain faulty equipment electrification by analysis as a result, if so then execute step s19, otherwise execute
Step s20；
S15, judge whether last time failure is single-phase fault, it is no to then follow the steps s22 if so then execute step s21；
Whether sent by force in 30s before s16, failure judgement, if then can not failure judgement property, otherwise the circuit is alternate
(multiphase) failure, does not send by force generally, attempts to send by force once if circuit is important；
S17, judge whether to meet strong power transmission success logic, it, otherwise can not failure judgement if so then execute step s23
Matter；
S18, judge whether blocking by low pressure reclosing signal occur, if after then the circuit is single-phase transient fault
The circuit that (blocking by low pressure) three is jumped, can be sent by force, no to then follow the steps s24；
S19, judge whether circuit charges, if then the circuit is general transient fault, otherwise the circuit is general single
Phase permanent fault can be sent by force primary in principle in the short period；
S20, reclosing actuating signal is judged whether there is, it is no to then follow the steps s26 if so then execute step s25；
S21, judge whether to meet strong power transmission failure logic, if then the circuit be for sent by force after single-phase permanent fault in
Multiphase failure should not be sent by force in the short time, no to then follow the steps s22；
Whether s22, judgement and failure time difference last time are more than 30 seconds, otherwise can not failure judgement if so then execute step s16
Property；
S23, failure of the same name is determined whether, if then to be sent by force after single-phase permanent fault list successfully occurs afterwards for the circuit
Identical famous prime minister's permanent fault, should not send by force in the short time, otherwise sent by force after single-phase permanent fault successfully occur afterwards it is single-phase different
Famous prime minister's permanent fault can by force be sent primary in the short time；
Whether s24, judgement and failure time difference last time are less than 15 seconds, no to then follow the steps s28 if so then execute step s27；
Whether s25, judgement there is actuating signal later, if then the circuit is general single-phase permanent fault, when shorter
Interior to send by force in principle once, otherwise the circuit is general transient fault；
S26, judge whether that direct three jump, if then the circuit is general single-phase permanent fault, principle in the short period
On can send by force primary, otherwise the circuit is single-phase evolved fault, circuit is important attempts to send by force it is primary；
S27, judge whether to meet strong power transmission success logic, if then the circuit be single-phase permanent fault after send success by force
After occur repeatedly to jump with (charging less than) after famous prime minister's transient fault three, equal do not damage switch factors because reclosing charging is less than and cause
Three jumps, it can attempt to send by force, otherwise the circuit is that (charging is less than) three jumps after multiple single-phase transient fault in the short time, for
Because reclosing charges, direct three circuits jumped can be sent by force singlephase earth fault；
S28, judge whether to meet strong power transmission failure logic otherwise can not failure judgement if so then execute step s29
Matter；
S29, judge whether it is failure of the same name, if then the circuit be single-phase permanent fault after send by force in single-phase same famous prime minister
Permanent fault should not be sent by force in the short time, and otherwise the circuit is mutually permanent in single-phase different name to be sent by force after single-phase permanent fault
Property failure, can by force be sent in the short time primary.
Claims (3)
1. a kind of telegram in reply Proposals method based on electric network fault behavioural analysis, it is characterised in that：Including step：
(1) analog quantity channel for protecting recording is modeled；
(2) after grid collapses, remote signalling displacement, SOE and protection signal, quick failure judgement circuit are received；
(3) automatic-calling is associated with the protection recorded wave file of the faulty line；
(4) determine that failure is separate according to protection recorded wave file record；
(5) the separate determination of failure determines nature of trouble in conjunction with remote signalling displacement, SOE and protection signal；
(6) rule is sent to provide scheduling telegram in reply Proposals according to nature of trouble and by force.
2. the telegram in reply Proposals method according to claim 1 based on electric network fault behavioural analysis, it is characterised in that：Institute
It includes step to state step (4)：
(4.1) determine that specific fault moment and corresponding failure are set according to the difference of phase currents of protection recorded wave file record
It is standby, and further determine that the analog quantity channel of faulty equipment；
(4.2) based on determining fault moment and analog quantity channel, to the previous cycle of failure and failure the latter cycle from
Sampled point is dissipated, the complex values of the analog quantity before and after failure are calculated using difference Fourier space algorithm；
(4.3) positive sequence, negative phase-sequence and zero-sequence current value after calculating failure are converted by phase sequence, pass through the ratio to sequence current failure component
Failure is separate to be determined to analysis.
3. the telegram in reply Proposals method according to claim 1 based on electric network fault behavioural analysis, it is characterised in that：Institute
It includes 8 three-phase voltage, residual voltage, three-phase current and zero-sequence current analog quantity channels to state analog quantity channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810297269.9A CN108548990B (en) | 2018-04-04 | 2018-04-04 | Power restoration strategy recommendation method based on power grid fault behavior analysis |
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| CN201810297269.9A CN108548990B (en) | 2018-04-04 | 2018-04-04 | Power restoration strategy recommendation method based on power grid fault behavior analysis |
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| CN108548990B CN108548990B (en) | 2020-08-04 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109842209A (en) * | 2019-02-14 | 2019-06-04 | 国网山东省电力公司淄博供电公司 | A kind of online failure analysis methods of intelligent substation |
| CN110531223A (en) * | 2019-10-14 | 2019-12-03 | 国网山东省电力公司莱芜供电公司 | A kind of 35kV line fault positioning quick calculation method based on scheduling application, equipment and readable storage medium storing program for executing |
| CN113325333A (en) * | 2021-05-14 | 2021-08-31 | 青岛鼎信通讯股份有限公司 | Small current grounding system disconnection detection method suitable for fault indicator |
| CN113408210A (en) * | 2021-07-12 | 2021-09-17 | 内蒙古电力（集团）有限责任公司乌兰察布电业局 | Deep learning based non-intrusive load splitting method, system, medium, and apparatus |
| CN113435690A (en) * | 2021-05-14 | 2021-09-24 | 北京四方继保工程技术有限公司 | Line forced transmission auxiliary decision-making method based on protection information deep mining |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN110531223A (en) * | 2019-10-14 | 2019-12-03 | 国网山东省电力公司莱芜供电公司 | A kind of 35kV line fault positioning quick calculation method based on scheduling application, equipment and readable storage medium storing program for executing |
| CN113325333A (en) * | 2021-05-14 | 2021-08-31 | 青岛鼎信通讯股份有限公司 | Small current grounding system disconnection detection method suitable for fault indicator |
| CN113435690A (en) * | 2021-05-14 | 2021-09-24 | 北京四方继保工程技术有限公司 | Line forced transmission auxiliary decision-making method based on protection information deep mining |
| CN113408210A (en) * | 2021-07-12 | 2021-09-17 | 内蒙古电力（集团）有限责任公司乌兰察布电业局 | Deep learning based non-intrusive load splitting method, system, medium, and apparatus |
| CN113408210B (en) * | 2021-07-12 | 2023-08-01 | 内蒙古电力(集团)有限责任公司乌兰察布供电分公司 | Deep learning-based non-invasive load decomposition method, system, medium and equipment |
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