CN111951124B - Power distribution automation terminal alarm defect identification method based on power supply traceability array - Google Patents
Power distribution automation terminal alarm defect identification method based on power supply traceability array Download PDFInfo
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- G—PHYSICS
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/04—Power grid distribution networks
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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
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- 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
Abstract
A power distribution automation terminal alarm defect identification method based on a power supply traceability array comprises the following steps: establishing a terminal alarm defect identification data model: power supply traceability array PTM; generating a comprehensive fault standard alarm terminal set CFSS based on the power supply traceability array PTM and the fault point head terminal set FHS; determining a fault alarm missing report terminal set FAMS through a difference set of a fault actual alarm terminal set FAAS to a comprehensive fault standard alarm terminal set CFSS; and determining a fault alarm false alarm terminal set FAFS through the difference set of the comprehensive fault standard alarm terminal set CFSS to the fault actual alarm terminal set FAAS. The invention digs and analyzes the alarm information of the distribution automation terminal under the fault condition, finds the terminal defect in time, and provides powerful support for repairing and eliminating the defect and operating and maintaining.
Description
Technical Field
The invention relates to the technical field of power distribution network terminal management and control and maintenance, in particular to a power distribution automation terminal alarm defect identification method based on a power supply traceability array.
Background
The feeder automation can judge a fault section based on fault alarm signals collected by a power distribution network terminal, and the method for isolating the fault section and recovering power supply in a sound area is an important means for improving the power supply reliability of the power distribution network.
As important elements for sensing a power distribution network, automatic terminal devices such as Feeder Terminal Units (FTUs), station terminal units (DTUs), fault Indicators (FIDs), intelligent distribution Transformer Terminals (TTUs) and the like are widely applied to medium-low voltage power distribution networks, and important guarantee is provided for considerable control of the power distribution network. However, due to the influence of various factors such as product quality, installation process, operation environment, maintenance means and the like, the situations of missing report and false report of alarm signals of an automatic terminal sometimes occur, and the accuracy of feeder automation fault judgment is seriously influenced. At present, the data analysis of an automatic terminal is concentrated on the aspects of remote signaling telemetry identification, terminal online rate analysis, terminal battery activation analysis, terminal communication analysis and the like, and the analysis and research on terminal alarm defects under the condition of power distribution network faults are less.
Disclosure of Invention
The embodiment of the invention provides a power distribution automation terminal alarm defect identification method based on a power supply traceability array, which is used for solving the problem of power distribution network terminal defect identification in the prior art.
In order to solve the technical problems, the embodiment of the invention discloses the following technical scheme:
a power distribution automation terminal alarm defect identification method based on a power supply traceability array comprises the following steps:
establishing a terminal alarm defect identification data model: power supply traceability array PTM;
generating a comprehensive fault standard alarm terminal set CFSS based on the power supply traceability array PTM and the fault point head terminal set FHS;
determining a fault alarm missing report terminal set FAMS through a difference set of a fault actual alarm terminal set FAAS to a comprehensive fault standard alarm terminal set CFSS;
and determining a fault alarm false alarm terminal set FAFS through the difference set of the comprehensive fault standard alarm terminal set CFSS to the fault actual alarm terminal set FAAS.
In a first possible implementation manner, the power supply traceback array PTM includes all power supply paths on a power distribution feeder and a terminal sequence thereof, which specifically includes:
wherein i=1, 2, …, n, n is the number of power supply paths of the distribution transformer and is equal to the number of the distribution transformers; j=1, 2, …, m, m is the number of automated terminals contained in the maximum power supply path; pt (pt) ij The number of the jth terminal in the ith power supply path is represented by-1 if the jth terminal is not present.
In a second possible implementation manner, the first terminal set FHS of failure points is a set of first automated terminals upstream of each failure point, and specifically includes:
FHS＝[fh 1 ,fh 2 ,…,fh g ,…,fh q ]
in the formula, fh g The first automated terminal upstream of the g-th fault point of the distribution feeder is numbered, g=1, 2, …, q, q being the total number of fault points of the distribution feeder.
In a third possible implementation manner, the generating the comprehensive fault standard alarm terminal set CFSS specifically includes the following steps:
sequentially selecting one element fh in fault point head-terminal set FHS g With each row element [ pt ] in power supply trace-back matrix PTM i1 ,pt i2 ,…,pt ij ,…,pt im ]Comparing;
if the line contains the element fh g Instant pt ij ＝fh g Indicating that a fault has occurred in the power supply path, recording element fh g N, upstream element count of (a) ij ；
If the rows all contain the element fh g Indicating that a fault occurred on a common path of the plurality of power supply paths;
selecting N ij The largest path x has an intra-row element of [ pt ] x1 ,pt x2 ,…,pt xj ,…,pt xm ]Single fault standard alarm terminal set SFSS for generating g fault point from upstream element g ：SFSS g ＝[ss g1 ,ss g2 ,…,ss gw ,…,ss gj ]The method comprises the steps of carrying out a first treatment on the surface of the In ss gw W=1, 2, …, j, j is the sum fh in the PTM for the w-th terminal on the power supply path upstream of the g-th point of failure g Column in which the same element is located, j=n ij ，pt xw ＝ss gw ；
Each element in the fault point head terminal set FHS is selected in sequence to generate a multi-fault standard alarm terminal set MFSS, which is specifically as follows: mfss= [ SFSS 1 ,SFSS 2 ,…,SFSS g ,…,SFSS q ]；
If multiple faults occur in parallel, merging elements in the multiple fault standard alarm terminal set (MFSS) to generate a comprehensive fault standard alarm terminal set (CFSS), specifically:
CFSS＝[cs 1 ,cs 2 ,…,cs k ,…,cs h ]
CFSS＝SFSS 1 ∪SFSS 2 ∪…SFSS g ∪…SFSS q
wherein cs k And numbering the kth automatic terminal in the comprehensive fault standard alarm terminal set CFSS, wherein k=1, 2, …, h and h are the total number of the automatic terminals in the comprehensive fault standard alarm terminal set CFSS.
In a fourth possible implementation manner, the method further includes establishing a fault actual alarm terminal set FAAS, and specifically includes:
FAAS＝[fa 1 ,fa 2 ,…,fa d ,…,fa e ]；
in the formula, fa d The d-th automatic terminal reporting alarm signal in the fault actual alarm terminal set FAAS is numbered, d=1, 2, …, e and e are the total number of the automatic terminals reporting the fault alarm signal by the distribution feeder.
In a fifth possible implementation manner, the determining, by the fault actual alarm terminal set FAAS, the fault alarm missing report terminal set FAMS for the difference set of the comprehensive fault standard alarm terminal set CFSS specifically includes:
FAMS＝[fm 1 ,fm 2 ,…,fm a ,…,fm b ]；
FAMS＝CFSS-FAAS；
wherein fm is a Numbering an automation terminal of an a-th missing report fault alarm signal in a fault alarm missing report terminal set FAMS, wherein a=1, 2, …, b, b is the automation terminal of the distribution feeder missing report fault alarm signal
Total number of ends.
In a sixth possible implementation manner, the determining, by the comprehensive fault standard alarm terminal set CFSS, the fault alarm false alarm terminal set FAFS for the difference set of the fault actual alarm terminal set FAAS specifically includes:
FAFS＝[ff 1 ,ff 2 ,…,ff c ,…,ff r ]
FAFS＝FAAS-CFSS
in ff e The e-th false alarm fault alarm signal in FAFS is gathered for fault alarm false alarm terminalAnd the number of the automatic terminals, e=1, 2, …, r and r are the total number of the automatic terminals of the distribution feeder false alarm fault alarm signal. According to the technical scheme, the terminal alarm defect identification data model, the comprehensive fault standard alarm terminal set, the fault actual alarm terminal set, the fault alarm missing terminal set and the fault alarm false alarm terminal set are established to excavate and analyze the power distribution automation terminal alarm information under the fault condition, so that the terminal defect is found in time, and a powerful support is provided for repairing the defect and operating maintenance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic flow diagram of a power distribution automation terminal alarm defect identification method based on a power supply traceability array;
fig. 2 is a schematic diagram of a terminal fault alarm signal distribution applied in an embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
Provision is made for a trace back from the distribution transformer, in the reverse direction of the power flow, to the power supply point, up to the substation outlet switch, the distribution automation terminal it experiences being defined as the power supply path terminal of the distribution transformer.
As shown in fig. 1, a power distribution automation terminal alarm defect identification method based on a power supply traceability array comprises the following steps:
s1, establishing a terminal alarm defect identification data model: power supply traceability array PTM;
s2, generating a comprehensive fault standard alarm terminal set CFSS based on a power supply traceability array PTM and a fault point head terminal set FHS;
s3, determining a fault alarm missing report terminal set FAMS through a difference set of a fault actual alarm terminal set FAAS to a comprehensive fault standard alarm terminal set CFSS;
s4, determining a fault alarm false alarm terminal set FAFS through the comprehensive fault standard alarm terminal set CFSS for the difference set of the fault actual alarm terminal set FAAS.
In step S1, a power supply traceability array PTM is established to describe all power supply paths and the terminal sequence thereof on a power distribution feeder, specifically:
wherein i=1, 2, …, n, n is the number of power supply paths of the distribution transformer and is equal to the number of the distribution transformers; j=1, 2, …, m, m is the number of automated terminals contained in the maximum power supply path; pt (pt) ij The number of the jth terminal in the ith power supply path is represented by-1 if the jth terminal is not present.
In step S2, the first terminal set FHS of failure points is a set of first automated terminals upstream of each failure point, and specifically includes:
FHS＝[fh 1 ,fh 2 ,…,fh g ,…,fh q ]
in the formula, fh g The first automated terminal upstream of the g-th fault point of the distribution feeder is numbered, g=1, 2, …, q, q being the total number of fault points of the distribution feeder.
The step S3 of generating the comprehensive fault standard alarm terminal set CFSS specifically comprises the following steps:
s31, sequentially selecting one element fh in fault point head-terminal set FHS g With each row element [ pt ] in power supply trace-back matrix PTM i1 ,pt i2 ,…,pt ij ,…,pt im ]Comparing;
s32, if the line contains the element fh g Instant pt ij ＝fh g Indicating that a fault has occurred in the power supply path, recording element fh g N, upstream element count of (a) ij ；
S33, if the rows all contain the element fh g Indicating that a fault occurred on a common path of the plurality of power supply paths;
s34, selecting N ij The largest path x has an intra-row element of [ pt ] x1 ,pt x2 ,…,pt xj ,…,pt xm ]Single fault standard alarm terminal set SFSS for generating g fault point from upstream element g ：SFSS g ＝[ss g1 ,ss g2 ,…,ss gw ,…,ss gj ]The method comprises the steps of carrying out a first treatment on the surface of the In ss gw W=1, 2, …, j, j is the sum fh in the PTM for the w-th terminal on the power supply path upstream of the g-th point of failure g Column in which the same element is located, j=n ij ，pt xw ＝ss gw ；
S35, sequentially selecting each element in the fault point head terminal set FHS to generate a multi-fault standard alarm terminal set MFSS, wherein the method specifically comprises the following steps: mfss= [ SFSS 1 ,SFSS 2 ,…,SFSS g ,…,SFSS q ]；
S36, if multiple faults occur in parallel, merging elements in the multiple fault standard alarm terminal set (MFSS) to generate a comprehensive fault standard alarm terminal set (CFSS) so as to describe a power distribution automation alarm terminal caused by all concurrent faults on a power distribution feeder, wherein the method specifically comprises the following steps:
CFSS＝[cs 1 ,cs 2 ,…,cs k ,…,cs h ]
CFSS＝SFSS 1 ∪SFSS 2 ∪…SFSS g ∪…SFSS q
wherein cs k And numbering the kth automatic terminal in the comprehensive fault standard alarm terminal set CFSS, wherein k=1, 2, …, h and h are the total number of the automatic terminals in the comprehensive fault standard alarm terminal set CFSS.
The step S4 of the precursor includes establishing a fault actual alarm terminal set FAAS, and when the FAAS records the fault occurrence, the distribution feeder lines report the automatic terminals of the fault alarm signals respectively, specifically including:
FAAS＝[fa 1 ,fa 2 ,…,fa d ,…,fa e ]；
in the formula, fa d The d-th automatic terminal reporting alarm signal in the fault actual alarm terminal set FAAS is numbered, d=1, 2, …, e and e are the total number of the automatic terminals reporting the fault alarm signal by the distribution feeder.
When a fault alarm missing report terminal set FAMS is established to describe the occurrence of a fault, the power distribution feeder is provided with a terminal which should report the fault alarm signal but not report the fault alarm signal. When a certain automation terminal belongs to the comprehensive fault standard alarm terminal set CFSS but not belongs to the fault actual alarm terminal set FAAS, the condition that the automation terminal has a missing fault alarm signal is indicated. The aggregate value of the FAMS may be determined by the difference set of the actual fault alert terminal aggregate FAAS with respect to the integrated fault standard alert terminal aggregate CFSS. In step S3, determining, by the fault actual alarm terminal set FAAS, the fault alarm missing report terminal set FAMS for the difference set of the comprehensive fault standard alarm terminal set CFSS specifically includes: fams= [ fm 1 ,fm 2 ,…,fm a ,…,fm b ]；
FAMS＝CFSS-FAAS；
Wherein fm is a And numbering the automation terminals of the a-th missing report fault alarm signal in the fault alarm missing report terminal set FAMS, wherein a=1, 2, …, b and b are the total number of the automation terminals of the distribution feeder missing report fault alarm signal.
When a fault alarm false alarm terminal set FAFS is established to describe the fault, the terminal which does not report the fault alarm signal but reports the fault alarm signal on the distribution feeder line. When a certain automatic terminal belongs to the fault actual alarm terminal set FAAS but not to the comprehensive fault standard alarm terminal set CFSS, the condition that the automatic terminal has false alarm fault alarm signals is indicated. The FAFS aggregate value may be determined by the comprehensive fault standard alarm terminal aggregate CFSS for the difference set of the fault actual alarm terminal aggregate FAAS. In step S4, determining, by the comprehensive fault standard alarm terminal set CFSS, the fault alarm false alarm terminal set FAFS for the difference set of the fault actual alarm terminal set FAAS specifically includes:
FAFS＝[ff 1 ,ff 2 ,…,ff c ,…,ff r ]
FAFS＝FAAS-CFSS
in ff e And numbering the automatic terminals of the e-th false alarm fault alarm signal in the fault alarm false alarm terminal set FAFS, wherein e=1, 2, …, r and r are the total number of the automatic terminals of the distribution feeder false alarm fault alarm signal.
As shown in the distribution feeder line of FIG. 2, B1 is a transformer substation outlet switch (power supply point), F1-F12 are automatic terminals capable of reporting fault alarm signals, T1-T5 are distribution transformers, and Bus1 is a 10kV Bus of the transformer substation.
When a fault occurs, the outlet switch B1 of the transformer substation trips, and the distribution main station receives fault alarm signals reported by terminals F1, F3, F4, F5, F11 and F12, as shown by black circles in the figure; according to the Fault studying and judging logic, the distribution feeder automation system studies and judges that faults occur in three places, wherein a first Fault point is in an area surrounded by a terminal F12 and a distribution transformer T2, as shown by Fault2 in FIG. 2; the second Fault point is in the area surrounded by the terminal F11 and the distribution transformer T4, as shown by Fault3 in FIG. 2; the third point of failure is within the area enclosed by terminal F4 and distribution transformer T1, as shown by Fault4 in fig. 2.
After the on-site investigation is carried out by the rush repair personnel, determining that faults occur at two places, wherein a first Fault point is in an area surrounded by a terminal F4 and a distribution transformer T1, as shown by Fault4 in FIG. 2; the second Fault point is in the area enclosed by the terminals F6, F10, F11, as shown by Fault5 in fig. 2. The accuracy of fault diagnosis is seriously affected by the missing report and false report of the alarm signal of the automatic terminal.
In order to solve the consequences caused by missing report and false report, a power supply traceability array PTM is established as follows:
the establishment of the fault point head terminal set FHS is as follows: FHS= [ F4, F6]
The method comprises the steps of establishing a single fault standard alarm terminal set SFSS1 and SFSS2 as follows:
SFSS 1 ＝[F1,F2,F4]SFSS 2 ＝[F1,F2,F3,F6]
the CFSS generating the comprehensive fault standard alarm terminal set is as follows:
CFSS＝SFSS 1 ∪SFSS 2 ＝[F1,F2,F3,F4,F6]
the method comprises the steps of establishing a fault actual alarm terminal set FAAS as: faas= [ F1, F3, F4, F5, F11, F12]
The FAMS generating the fault alarm missing report terminal set is as follows: fams=cfss-faas= [ F2, F6]
The fault alarm false alarm terminal set FAFS is generated as follows: fafs=faas-cfss= [ F5, F11, F12]
Therefore, operation and maintenance personnel can carry out fixed-point accurate maintenance and maintenance replacement on equipment listed in the fault alarm missing report terminal set FAMS and the fault alarm false report terminal set FAFS as soon as possible to ensure the accuracy of power distribution network fault perception, thereby achieving the purpose of improving the power supply reliability.
The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. A power distribution automation terminal alarm defect identification method based on a power supply traceability array is characterized by comprising the following steps:
establishing a terminal alarm defect identification data model: power supply traceability array PTM;
generating a comprehensive fault standard alarm terminal set CFSS based on the power supply traceability array PTM and the fault point head terminal set FHS;
determining a fault alarm missing report terminal set FAMS through a difference set of a fault actual alarm terminal set FAAS to a comprehensive fault standard alarm terminal set CFSS;
determining a fault alarm false alarm terminal set FAFS through a comprehensive fault standard alarm terminal set CFSS for a difference set of a fault actual alarm terminal set FAAS;
the power supply traceability array PTM comprises all power supply paths and terminal sequences thereof on a distribution feeder, and specifically comprises the following steps:
wherein i=1, 2, …, n, n is the number of power supply paths of the distribution transformer and is equal to the number of the distribution transformers; j=1, 2, …, m, m is the number of automated terminals contained in the maximum power supply path; pt (pt) ij The number of the jth terminal in the ith power supply path is represented by-1 if the terminal does not exist;
the first terminal set FHS of fault point is the first terminal set upstream of each fault point, and specifically includes:
FHS＝[fh 1 ,fh 2 ,…,fh g ,…,fh q ]
in the formula, fh g Numbering a first automatic terminal upstream of a g-th fault point of the distribution feeder, wherein g=1, 2, …, q and q are the total number of the fault points of the distribution feeder;
the method for generating the comprehensive fault standard alarm terminal set CFSS specifically comprises the following steps:
sequentially selecting one element fh in fault point head-terminal set FHS g With each row element [ pt ] in power supply trace-back matrix PTM i1 ,pt i2 ,…,pt ij ,…,pt im ]Comparing;
if the line contains the element fh g Instant pt ij ＝fh g Indicating that a fault has occurred in the power supply path, recording element fh g N, upstream element count of (a) ij ；
If the rows all contain the element fh g Indicating that a fault occurred on a common path of the plurality of power supply paths;
selecting N ij The largest path x has an intra-row element of [ pt ] x1 ,pt x2 ,…,pt xj ,…,pt xm ]Single fault standard alarm terminal set SFSS for generating g fault point from upstream element g； SFSS g ＝[ss g1 ,ss g2 ,…,ss gw ,…,ss gj ]The method comprises the steps of carrying out a first treatment on the surface of the In ss gw W=1, 2, …, j, j is the sum fh in the PTM for the w-th terminal on the power supply path upstream of the g-th point of failure g Column in which the same element is located, j=n ij ，pt xw ＝ss gw ；
Each element in the fault point head terminal set FHS is selected in sequence to generate a multi-fault standard alarm terminal set MFSS, which is specifically as follows: mfss= [ SFSS 1 ,SFSS 2 ,…,SFSS g ,…,SFSS q ]；
If multiple faults occur in parallel, merging elements in the multiple fault standard alarm terminal set (MFSS) to generate a comprehensive fault standard alarm terminal set (CFSS), specifically:
CFSS＝[cs 1 ,cs 2 ,…,cs k ,…,cs h ]
CFSS＝SFSS 1 ∪SFSS 2 ∪…SFSS g ∪…SFSS q
wherein cs k And numbering the kth automatic terminal in the comprehensive fault standard alarm terminal set CFSS, wherein k=1, 2, …, h and h are the total number of the automatic terminals in the comprehensive fault standard alarm terminal set CFSS.
2. The method according to claim 1, wherein the method further comprises establishing a fault actual alert terminal set FAAS, specifically comprising:
FAAS＝[fa 1 ,fa 2 ,…,fa d ,…,fa e ]；
in the formula, fa d FAAS (File access system) for actual fault alarm terminal setThe d-th automatic terminal number reporting alarm signals, d=1, 2, …, e, e is the total number of automatic terminals reporting fault alarm signals on the distribution feeder.
3. The method according to claim 2, wherein the determining, by the actual fault alert terminal set FAAS, the fault alert missing report terminal set FAMS for the difference set of the comprehensive fault standard alert terminal set CFSS specifically includes:
FAMS＝[fm 1 ,fm 2 ,…,fm a ,…,fm b ]；
FAMS＝CFSS-FAAS；
wherein fm is a And numbering the automation terminals of the a-th missing report fault alarm signal in the fault alarm missing report terminal set FAMS, wherein a=1, 2, …, b and b are the total number of the automation terminals of the distribution feeder missing report fault alarm signal.
4. The method according to claim 1, wherein the determining, by the integrated fault standard alarm terminal set CFSS, the fault alarm misinformation terminal set FAFS for the difference set of the fault actual alarm terminal set FAAS specifically includes:
FAFS＝[ff 1 ,ff 2 ,…,ff c ,…,ff r ]
FAFS＝FAAS-CFSS
in ff e And numbering the automatic terminals of the e-th false alarm fault alarm signal in the fault alarm false alarm terminal set FAFS, wherein e=1, 2, …, r and r are the total number of the automatic terminals of the distribution feeder false alarm fault alarm signal.
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