CN114696317A - Power distribution network line transformation relation identification method and terminal - Google Patents
Power distribution network line transformation relation identification method and terminal Download PDFInfo
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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Abstract
The invention discloses a method and a terminal for identifying a line-variable relationship of a power distribution network; the method comprises the steps of obtaining single line diagram topology information from a power distribution management system, and generating a feeder line fault standard power failure information set; acquiring real-time alarm information from a power distribution management system to generate a real-time power failure information set; generating a distribution transformer misconnection information set and a distribution transformer misconnection information set according to the difference set between the current and the voltage, and generating a distribution transformer misconnection information set and a distribution transformer misconnection information set according to the difference set between the current and the voltage; the method generates a feeder fault standard power failure information set and a real-time power failure information set based on the single line diagram topology information of the power distribution network and the real-time alarm information of the feeder fault of the power distribution network, finally generates a distribution transformer misconnection information set and a distribution transformer misconnection information set according to the two information sets, simply, conveniently and reliably realizes the identification of the line transformation relation of the power distribution network based on the fault power failure information inversion, can well meet the actual requirements of the site, and has good popularization value.
Description
Technical Field
The invention relates to the technical field of power distribution network line variable relation topology identification, in particular to a power distribution network line variable relation identification method and a terminal.
Background
With the gradual expansion of the construction scale of the power distribution network, a large number of distributed power supplies are connected into a low-voltage power distribution network through an inverter, and form an active power distribution network through a distribution transformer and a medium-voltage power distribution network. The construction of a novel active power distribution network is one of the key measures for achieving the goals of carbon peak reaching and carbon neutralization.
The power distribution network equipment is various, the operation mode is complex and changeable, the real-time operation state of the power distribution network is timely and accurately mastered, and the power distribution network can be observed, measured and controlled, so that the basis for constructing the intelligent power distribution network is provided. Currently, companies in cities and areas of the national network and the south network have realized online monitoring and control of a medium-voltage Distribution network through a Distribution Management System (DMS), and the automation level and the power supply reliability of the Distribution network are effectively improved. Good graph and model quality is the basis of optimization analysis of the DMS system, but due to numerous distribution transformer devices and frequent abnormal operation, the distribution transformer models and graphs in the DMS system are not updated timely due to operations such as addition, reconnection and customer cancellation, and the like, and have a large difference with the actual operation condition on site, so that the accuracy of topology analysis of the distribution network is seriously influenced, the safety of fault isolation and transfer of the distribution network is influenced, and the accuracy of line loss analysis of the distribution network is influenced, so that the accurate identification and verification of the connection relationship between the distribution transformer and a feeder line have important significance.
The current topology identification method has a good effect on solving the subordinate relationship between the feeder line and the distribution transformer of the distribution network, but the line-to-line variation relationship of the distribution network not only comprises the subordinate relationship between the feeder line and the distribution transformer, but also comprises the subordinate relationship between the main line and the distribution transformer and the subordinate relationship between the branch line and the distribution transformer, and the correctness of the relationship is the basis of the topology analysis of the DMS system of the distribution network. Therefore, the method has important practical significance for researching the line-variable relationship identification and verification of the power distribution network based on the topological relationship of the DMS system.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a distribution network line transformation relation identification method and a terminal, which can realize the identification of the distribution network line transformation relation based on the fault power failure information inversion.
In order to solve the technical problems, the invention adopts the technical scheme that:
a power distribution network line variation relation identification method comprises the following steps:
s1, acquiring single line diagram topology information from a power distribution management system, and generating a feeder fault standard power failure information set (FSIS);
s2, acquiring real-time alarm information from a power distribution management system, and generating a real-time power failure information set (FRIS);
and S3, generating a distribution transformer misconnection information set TFCS according to the difference set between the FSIS and the FRIS, and generating a distribution transformer misconnection information set TMCS according to the difference set between the FRIS and the FSIS.
In order to solve the technical problem, the invention adopts another technical scheme as follows:
a distribution network line-change relationship identification terminal, comprising a processor, a memory and a computer program stored in the memory and operable on the processor, wherein the processor executes the computer program to implement the following steps:
s1, acquiring single line diagram topology information from a power distribution management system, and generating a feeder line fault standard power failure information set FSIS;
s2, acquiring real-time alarm information from a power distribution management system, and generating a real-time power failure information set (FRIS);
and S3, generating a distribution transformer misconnection information set TFCS according to the difference set between the FSIS and the FRIS, and generating a distribution transformer misconnection information set TMCS according to the difference set between the FRIS and the FSIS.
The invention has the beneficial effects that: the invention generates a feeder fault standard power failure information set FSIS and a real-time power failure information set FRIS based on single line diagram topological information of a power distribution network and real-time alarm information of feeder faults of the power distribution network, and finally generates a distribution transformer misconnection information set TFCS used for representing a distribution transformer which is not connected but misconnected on a feeder and a distribution transformer misconnection information set TMCS used for representing a distribution transformer which is connected but is missed on a feeder.
Drawings
Fig. 1 is a flowchart of a method for identifying a line-variation relationship of a power distribution network according to an embodiment of the present invention;
fig. 2 is a structural diagram of a power distribution network line-variation relationship identification terminal according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an exemplary power distribution network of a power distribution network line transformation relationship identification method according to an embodiment of the present invention;
description of reference numerals:
1. a terminal for identifying the line-to-line relation of a power distribution network; 2. a processor; 3. a memory.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
English abbreviation interpretation controls:
DMS: distribution management system, power Distribution management system;
SFIS: the single-fault power failure information set represents the connection relation between a single trip switch and a power failure distribution transformer and is generated based on the single line diagram topological information of the DMS system;
TSES: the trip switch device set represents all trip switches on the same feeder line and can be obtained by the switch trip items in the DMS system;
and (3) FSIS: the feeder line fault standard power failure information set describes the single line diagram topology based on a DMS system, and the connection relation between all trip switches and power-off distribution transformers on the same feeder line comprises all power-off distribution transformers under the feeder line fault standard condition;
FRIS: the real-time power failure information set describes all distribution transformers reporting power failure events of the main station on the same feeder line based on real-time alarm information of a DMS system, and comprises all power failure distribution transformers under the condition of feeder line faults in real time;
TFCS: the distribution transformer misconnection information set describes a distribution transformer which should not be connected but is misconnected on a feeder line;
TMCS: the distribution transformer missing information set describes that the distribution transformer which should be connected on a feeder line is missed.
Referring to fig. 1 and fig. 2, a method for identifying a line-to-line relationship of a power distribution network includes the steps of:
s1, acquiring single line diagram topology information from a power distribution management system, and generating a feeder line fault standard power failure information set FSIS;
s2, acquiring real-time alarm information from a power distribution management system, and generating a real-time power failure information set (FRIS);
and S3, generating a distribution transformer misconnection information set TFCS according to the difference set between the FSIS and the FRIS, and generating a distribution transformer misconnection information set TMCS according to the difference set between the FRIS and the FSIS.
From the above description, the beneficial effects of the present invention are: the invention generates a feeder fault standard power failure information set FSIS and a real-time power failure information set FRIS based on single line diagram topological information of a power distribution network and real-time alarm information of feeder faults of the power distribution network, and finally generates a distribution transformer misconnection information set TFCS used for representing a distribution transformer which is not connected but misconnected on a feeder and a distribution transformer misconnection information set TMCS used for representing a distribution transformer which is connected but is missed on a feeder.
Further, the step S1 specifically includes the steps of:
s11, acquiring single line diagram topology information from the power distribution management system, and generating a single fault power failure information set SFIS which represents the connection relation between a single trip switch and a power loss distribution transformer:
SFIS(x)＝[ss1，ss2，…，ssi，…，ssn]；
and a set of trip switch devices TSES representing all trip switches on the same feeder line:
TSES(y)＝[ts1，ts2，…，tsj，…，tsm]；
s12, generating a feeder fault standard power failure information set FSIS which represents the connection relation between all trip switches and the power loss distribution transformer on the same feeder according to the TSES and the SFIS:
FSIS(y)＝SFIS(ts1)∪SFIS(ts2)∪…SFIS(tsm)；
expressed as:
FSIS(y)＝[fs1，fs2，…，fsk，…，fsw]；
wherein SFIS (x) represents a single fault outage information set, ss, for the trip switch xiThe name of the ith power-losing distribution transformer in the single-fault power failure information set is represented by i belonging to {1, 2, …, n }, and n is the total number of the power-losing distribution transformers in the single-fault power failure information set;
TSES (y) denotes the tripping switching device set, ts, of the feeder line yjJ is the name of the jth trip switch in the trip switch device set, belongs to {1, 2, …, m }, and m is the total number of trip switches in the trip switch device set;
FSIS (y) feeder fault criteria outage information set, fs, representing feeder ykThe name of the kth power-losing distribution transformer in the feeder fault standard power failure information set is shown, k belongs to {1, 2, …, w }, and w is the total number of the power-losing distribution transformers in the feeder fault standard power failure information set.
Further, the FRIS is generated specifically as follows:
FRIS(y)＝[fr1，fr2，…，fra，…，frv]；
wherein FRIS (y) represents the feeder line y has the real-time power failure information set of the feeder line fault, frdThe name of the a-th power-losing distribution transformer in the real-time power failure information set is a belonging to {1, 2, …, v }, and v is the total number of the power-losing distribution transformers in the real-time power failure information set.
Further, the generating of the TFCS specifically is:
TFCS(y)＝FSIS(y)-FRIS(y)；
expressed as:
TFCS(y)＝[tf1，tf2，…，tfb，…，tfp]；
wherein, tfcs (y) represents the distribution transformer misconnection information set of the feeder y, fris (y) represents the real-time power failure information set of the feeder y with the feeder fault, fsis (y) represents the feeder fault standard power failure information set of the feeder y, "-" is the complementary set operator, tfbAnd b belongs to {1, 2, …, p } for the name of the distribution transformer of the b-th misconnection connected to the feeder y in the misconnection information set of the distribution transformer, wherein p is the total number of the power-losing distribution transformers in the misconnection information set of the distribution transformer.
Further, the generating of TMCS specifically includes:
TMCS(y)＝FRIS(y)-FSIS(y)；
expressed as:
TMCS(y)＝[tm1，tm2，…，tmc，…，tmq]；
TMCS (y) represents a distribution transformer leakage information set of a feeder y, FRIS (y) represents a real-time power failure information set of the feeder y with a feeder fault, and FSIS (y) represents the feeder of the feeder yLine fault standard power failure information set, "-" is complement operator, tmcAnd c belongs to {1, 2, …, q } for the name of the distribution transformer which is the c-th distribution transformer in the distribution transformer misconnection information set and is connected to the feeder line y but is misconnected, and q is the total number of the power-losing distribution transformers in the distribution transformer misconnection information set.
Referring to fig. 2, a distribution network line-change relationship identification terminal includes a processor, a memory, and a computer program stored in the memory and executable on the processor, where the processor implements the following steps when executing the computer program:
s1, acquiring single line diagram topology information from a power distribution management system, and generating a feeder line fault standard power failure information set FSIS;
s2, acquiring real-time alarm information from a power distribution management system, and generating a real-time power failure information set (FRIS);
and S3, generating a distribution transformer misconnection information set TFCS according to the difference set between the FSIS and the FRIS, and generating a distribution transformer misconnection information set TMCS according to the difference set between the FRIS and the FSIS.
Further, when the processor executes the computer program, the step S1 specifically includes the steps of:
s11, acquiring single line diagram topology information from the power distribution management system, and generating a single fault power failure information set SFIS which represents the connection relation between a single trip switch and a power failure distribution transformer:
SFIS(x)＝[ss1，ss2，…，ssi，…，ssn]；
and a set of trip switch devices TSES representing all trip switches on the same feeder line:
TSES(y)＝[ts1，ts2，…，tsj，…，tsm]；
s12, generating a feeder fault standard power failure information set FSIS which represents the connection relation between all tripping switches and the power loss distribution transformer on the same feeder according to the TSES and the SFIS:
FSIS(y)＝SFIS(ts1)∪SFIS(ts2)∪…SFIS(tsm)；
expressed as:
FSIS(y)＝[fs1，fs2，…，fsk，…，fsw]；
wherein SFIS (x) represents a single fault outage information set, ss, for the trip switch xiThe name of the ith power-losing distribution transformer in the single-fault power failure information set is represented by i belonging to {1, 2, …, n }, and n is the total number of the power-losing distribution transformers in the single-fault power failure information set;
TSES (y) sets of trip switches, ts, representing feeders yjJ is the name of the jth trip switch in the trip switch device set, belongs to {1, 2, …, m }, and m is the total number of trip switches in the trip switch device set;
FSIS (y) feeder fault standard outage information set, fs, representing feeder ykThe name of the kth power-losing distribution transformer in the feeder fault standard power failure information set is shown, k belongs to {1, 2, …, w }, and w is the total number of the power-losing distribution transformers in the feeder fault standard power failure information set.
Further, the FRIS is generated specifically as follows:
FRIS(y)＝[fr1，fr2，…，fra，…，frv]；
wherein FRIS (y) represents the feeder line y has the real-time power failure information set of the feeder line fault, fraThe name of the a-th power-losing distribution transformer in the real-time power failure information set is a belonging to {1, 2, …, v }, and v is the total number of the power-losing distribution transformers in the real-time power failure information set.
Further, the generating of the TFCS specifically is:
TFCS(y)＝FSIS(y)-FRIS(y)；
expressed as:
TFCS(y)＝[tf1，tf2，…，tfb，…，tfp]；
wherein, tfcs (y) represents the distribution transformer misconnection information set of the feeder y, fris (y) represents the real-time power failure information set of the feeder y with the feeder fault, fsis (y) represents the feeder fault standard power failure information set of the feeder y, "-" is the complementary set operator, tfbIs prepared forAnd b belongs to {1, 2, …, p } and p is the total number of the power-losing distribution transformers in the misconnection information set of the distribution transformers.
Further, the generating of TMCS specifically includes:
TMCS(y)＝FRIS(y)-FSIS(y)；
expressed as:
TMCS(y)＝[tm1，tm2，…，tmc，…，tmq]；
TMCS (y) represents a distribution transformer missing connection information set of a feeder y, FRIS (y) represents a real-time power failure information set of the feeder y with a feeder fault, FSIS (y) represents a feeder fault standard power failure information set of the feeder y, and '-' is a complement operator and tmcAnd c belongs to {1, 2, …, q } for the name of the distribution transformer which is the c-th distribution transformer in the distribution transformer misconnection information set and is connected to the feeder line y but is misconnected, and q is the total number of the power-losing distribution transformers in the distribution transformer misconnection information set.
The method and the terminal for identifying the line-variable relationship of the power distribution network are suitable for scenes in which the line-variable relationship of the power distribution network needs to be identified under a DMS (distribution management system) of the power distribution network.
Referring to fig. 1 and fig. 3, a first embodiment of the present invention is:
a power distribution network line variation relation identification method comprises the following steps:
s1, acquiring single line diagram topology information from a power distribution management system, and generating a feeder line fault standard power failure information set FSIS;
the step S1 specifically includes the steps of:
s11, acquiring single line diagram topology information from the power distribution management system, and generating a single fault power failure information set SFIS which represents the connection relation between a single trip switch and a power failure distribution transformer:
SFIS(x)＝[ss1，ss2，…，ssi，…，ssn]；
and a set of trip switch devices TSES representing all trip switches on the same feeder line:
TSES(y)＝[ts1，ts2，…，tsj，…，tsm]；
s12, generating a feeder fault standard power failure information set FSIS which represents the connection relation between all tripping switches and the power loss distribution transformer on the same feeder according to the TSES and the SFIS:
FSIS(y)＝SFIS(ts1)∪SFIS(ts2)∪…SFIS(tsm)；
expressed as:
FSIS(y)＝[fs1，fs2，…，fsk，…，fsw]；
wherein SFIS (x) represents a single fault outage information set, ss, for the trip switch xiThe name of the ith power-losing distribution transformer in the single-fault power failure information set belongs to i ∈ {1, 2, …, n }, and n is the total number of the power-losing distribution transformers in the single-fault power failure information set;
TSES (y) sets of trip switches, ts, representing feeders yjJ is the name of the jth trip switch in the trip switch device set, belongs to {1, 2, …, m }, and m is the total number of trip switches in the trip switch device set;
FSIS (y) feeder fault criteria outage information set, fs, representing feeder ykThe name of the kth power-losing distribution transformer in the feeder fault standard power failure information set is shown, k belongs to {1, 2, …, w }, and w is the total number of the power-losing distribution transformers in the feeder fault standard power failure information set.
In this embodiment, as shown in fig. 3, for the distribution feeder, Bus1 is a substation 10kV Bus, and F1 is a substation outgoing switch of the feeder; S1-S8 are breaker switches with three-section protection function, B1-B16 are feeder line section switches without three-section protection function, T1-T46 are distribution transformers, and D1-D46 are drop-out fuses.
In this embodiment, when the breaker switches S2, S4, and S7 are tripped simultaneously, a single-fault power outage information set can be generated for each switch according to the definition of the single-fault power outage information set, as shown in table 1. Therefore, after the single line diagram topology information is acquired from the power distribution management system, the generated single fault power failure information set SFIS representing the connection relationship between the single trip switch and the power loss distribution transformer is as follows:
TABLE 1
| Switch name | Single-fault power failure information set SFIS |
| S2 | T7，T8，T9，T10，T11，T12 |
| S4 | T14，T15，T16，T17，T18，T19，T20，T21 |
| S7 | T33，T34，T35 |
As can be seen from table 1, when the switch S2 trips due to a downstream fault, it can be seen from the single line diagram topological connection relationship of the DMS system that the distribution transformers T7 to T12 will have power failure, and the power failure information will be uploaded to the master station. The analysis of the switches S4 and S7 is similar and will not be described in detail.
The single fault outage information set SFIS describes the topological connection relationship between the switches and the power supply distribution transformers recorded in the DMS system. When the switch trips, the power distribution transformers connected with the switch lose power, and each power distribution transformer transmits power failure alarm information of the DMS master station system. If the distribution transformer which sends the power failure alarm information is inconsistent with the distribution transformer in the single-fault power failure information set SFIS, the topological connection relation between the switch and the distribution transformer in the DMS system is wrong, and the line transformation relation of the distribution network can be identified and verified based on the principle.
The set of trip switching devices TSES (y1) is established as:
TSES(y1)＝[S2，S4，S7]；
because the power failure alarm event sent to the DMS master station system by the distribution transformer is delayed and the distribution transformers are not synchronous, the master station system needs to delay for a period of time (generally 30 seconds) to determine that all the alarm information of the distribution transformer can be acquired. Multiple faults may occur on the same distribution feeder, resulting in tripping of multiple switches.
The set of trip switch devices TSES is created to describe all the trip switches on the same feeder, which can be obtained from the switch trip events in the DMS system.
According to the TSES and the SFIS, establishing a feeder fault standard power failure information set FSIS (y1) as follows:
FSIS(y1)＝[T7，T8，T9，T10，T11，T12，T14，T15，T16，T17，T18，T19，T20，T21，T33，T34，T35]。
s2, acquiring real-time alarm information from a power distribution management system, and generating a real-time power failure information set (FRIS);
the FRIS generation specifically comprises the following steps:
FRIS(y)＝[fr1，fr2，…，fra，…，frv]；
wherein FRIS (y) represents the feeder line y has the real-time power failure information set of the feeder line fault, fraThe name of the a-th power-losing distribution transformer in the real-time power failure information set is a belonging to {1, 2, …, v }, and v is the total number of the power-losing distribution transformers in the real-time power failure information set.
In this embodiment, as shown in fig. 3, for the distribution feeder y1, the DMS system receives trip events of the switches S2, S4, and S7 at a certain time, and receives power failure warning information of the distribution transformers T7 to T10, T14 to T18, T33 to T35, and T47 to T50, which is specifically shown in table 1:
TABLE 1
In this embodiment, the real-time alarm information, that is, the real-time power failure alarm information, is acquired from the DMS, and thus a feeder fault real-time power failure information set FRIS (y1) is established as follows:
FRIS(y1)＝[T7，T8，T9，T10，T14，T15，T16，T17，T18，T33，T34，T35，T47，T48，T49，T50]。
s3, generating a distribution transformer misconnection information set TFCS according to the difference set between the FSIS and the FRIS, and generating a distribution transformer misconnection information set TMCS according to the difference set between the FRIS and the FSIS;
the generation of the TFCS is specifically:
TFCS(y)＝FSIS(y)-FRIS(y)；
expressed as:
TFCS(y)＝[tf1，tf2，…，tfb，…，tfp]；
wherein, tfcs (y) represents the distribution transformer misconnection information set of the feeder y, fris (y) represents the real-time power failure information set of the feeder y with the feeder fault, fsis (y) represents the feeder fault standard power failure information set of the feeder y, "-" is the complementary set operator, tfbThe name of the distribution transformer which is in the wrong connection information set of the distribution transformer and is in the wrong connection with the feeder line y is set as b, the b belongs to {1, 2, …, p }, and the p is the total number of power-losing distribution transformers in the wrong connection information set of the distribution transformer;
the generation of the TMCS specifically comprises:
TMCS(y)＝FRIS(y)-FSIS(y)；
expressed as:
TMCS(y)＝[tm1，tm2，…，tmc，…，tmq]；
TMCS (y) represents a distribution transformer missing connection information set of a feeder y, FRIS (y) represents a real-time power failure information set of the feeder y with a feeder fault, FSIS (y) represents a feeder fault standard power failure information set of the feeder y, and '-' is a complement operator and tmcC belongs to {1, 2, …, q } for the name of the distribution transformer which is the c-th distribution transformer in the distribution transformer misconnection information set and is connected to the feeder line y but is misconnected, and q is the total number of the power-losing distribution transformers in the distribution transformer misconnection information set.
In this embodiment, according to FSIS (y1) and FRIS (y1), the distribution transformer misconnection information set TFCS (y1) is established as:
TFCS(y1)＝FSIS(y1)-FRIS(y1)
＝[T11，T12，T19，T20，T21]；
establishing a distribution transformer residual connection information set TMCS (y1) as follows:
TMCS(y1)＝FRIS(y1)-FSIS(y1)
＝[T47，T48，T49，T50]；
it can be seen that distribution transformers T11, T12, T19, T20, T21 should not be connected but erroneously connected to feeder y1, and distribution transformers T47, T48, T49, T50 should be connected but not connected to feeder y 1.
Referring to fig. 2, a second embodiment of the present invention is:
a distribution network line-variable relation identification terminal 1 comprises a processor 2, a memory 3 and a computer program stored in the memory 3 and capable of running on the processor 2, wherein the processor 2 implements the steps in the first embodiment when executing the computer program.
The invention discloses a method and a terminal for identifying a line-to-line transformation relation of a power distribution network, which are mainly characterized in that a topological connection relation of a feeder line, a switch and a distribution transformer in the power distribution network and real-time power failure alarm information are described in a matrix mode to respectively establish a feeder line fault standard power failure information set FSIS for expressing the connection relation between all trip switches and a power failure distribution transformer on the same feeder line and a real-time power failure information set FRIS for expressing the existence of feeder line faults on the feeder line y, so that the power failure distribution transformer with wrong connection is determined by comparing the two information sets.
In summary, according to the method and the terminal for identifying the line-to-line variable relationship of the power distribution network provided by the invention, firstly, a single-fault power failure information set SFIS is established to obtain a line-to-line variable relationship identification model of the power distribution network; then, describing a DMS system-based single line diagram topology through a feeder fault standard power failure information set FSIS, and describing the connection relation between all trip switches and a power-loss distribution transformer on the same feeder; secondly, describing all distribution transformers reporting power failure events of a main station on the same feeder line based on real-time alarm information of a DMS system through a feeder line fault real-time power failure information set FRIS; describing a distribution transformer which is not connected but connected in error on a feeder line through a distribution transformer misconnection information set TFCS; and finally, describing a distribution transformer which should be connected on a feeder line but is missed by the distribution transformer missing connection information set TMCS. The method can be used for identifying the line-to-line relation of the power distribution network based on the topological information and the real-time fault warning information of the DMS system, is simple, convenient and reliable, can well meet the actual requirements of the site, and has good popularization value.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (10)
1. A power distribution network line variation relation identification method is characterized by comprising the following steps:
s1, acquiring single line diagram topology information from a power distribution management system, and generating a feeder line fault standard power failure information set FSIS;
s2, acquiring real-time alarm information from a power distribution management system, and generating a real-time power failure information set FRIS;
and S3, generating a distribution transformer misconnection information set TFCS according to the difference set between the FSIS and the FRIS, and generating a distribution transformer misconnection information set TMCS according to the difference set between the FRIS and the FSIS.
2. The method for identifying the distribution network line-to-line relationship of claim 1, wherein the step S1 specifically comprises the steps of:
s11, acquiring single line diagram topology information from the power distribution management system, and generating a single fault power failure information set SFIS which represents the connection relation between a single trip switch and a power failure distribution transformer:
SFIS(x)＝[ss1，ss2，…，ssi，…，ssn]；
and a set of trip switch devices TSES representing all trip switches on the same feeder:
TSES(y)＝[ts1，ts2，…，tsj，…，tsm]；
s12, generating a feeder fault standard power failure information set FSIS which represents the connection relation between all tripping switches and the power loss distribution transformer on the same feeder according to the TSES and the SFIS:
FSIS(y)＝SFIS(ts1)∪SFIS(ts2)∪…SFIS(tsm)；
expressed as:
FSIS(y)＝[fs1，fs2，…，fsk，…，fsw]；
wherein SFIS (x) represents a single fault outage information set, ss, for the trip switch xiThe name of the ith power-losing distribution transformer in the single-fault power failure information set is represented by i belonging to {1, 2, …, n }, and n is the total number of the power-losing distribution transformers in the single-fault power failure information set;
TSES (y) sets of trip switches, ts, representing feeders yjJ is the name of the jth trip switch in the trip switch device set, j belongs to {1, 2, …, m }, and m is the total number of trip switches in the trip switch device set;
FSIS (y) feeder fault criteria outage information set, fs, representing feeder ykThe name of the kth power-losing distribution transformer in the feeder fault standard power failure information set is shown, k belongs to {1, 2, …, w }, and w is the total number of the power-losing distribution transformers in the feeder fault standard power failure information set.
3. The method for identifying the distribution network line-variation relationship of claim 1, wherein the FRIS is generated specifically as follows:
FRIS(y)＝[fr1，fr2，…，fra，…，frv]；
wherein FRIS (y) represents the feeder line y has the real-time power failure information set of the feeder line fault, fraThe name of the a-th power-losing distribution transformer in the real-time power failure information set is a belonging to {1, 2, …, v }, and v is the total number of the power-losing distribution transformers in the real-time power failure information set.
4. The method according to claim 1, wherein the generating of the TFCS specifically comprises:
TFCS(y)＝FSIS(y)-FRIS(y)；
expressed as:
TFCS(y)＝[tf1，tf2，…，tfb，…，tfp]；
wherein, tfcs (y) represents the distribution transformer misconnection information set of the feeder y, fris (y) represents the real-time power failure information set of the feeder y with the feeder fault, fsis (y) represents the feeder fault standard power failure information set of the feeder y, "-" is the complementary set operator, tfbAnd b belongs to {1, 2, …, p } for the name of the distribution transformer of the b-th misconnection information set of the distribution transformer which is misconnected to the feeder line y, wherein p is the total number of the dead distribution transformers in the misconnection information set of the distribution transformer.
5. The method for identifying the distribution network line-to-line variation relationship according to claim 1, wherein the generating of the TMCS specifically comprises:
TMCS(y)＝FRIS(y)-FSIS(y)；
expressed as:
TMCS(y)＝[tm1，tm2，…，tmc，…，tmq]；
TMCS (y) represents a distribution transformer missing connection information set of a feeder y, FRIS (y) represents a real-time power failure information set of the feeder y with a feeder fault, FSIS (y) represents a feeder fault standard power failure information set of the feeder y, and '-' is a complement operator and tmcC belongs to {1, 2, …, q } for the name of the distribution transformer which is the c-th distribution transformer in the distribution transformer misconnection information set and is connected to the feeder line y but is misconnected, and q is the total number of the power-losing distribution transformers in the distribution transformer misconnection information set.
6. A distribution network line-change relationship identification terminal, comprising a processor, a memory and a computer program stored in the memory and operable on the processor, wherein the processor executes the computer program to implement the following steps:
s1, acquiring single line diagram topology information from a power distribution management system, and generating a feeder line fault standard power failure information set FSIS;
s2, acquiring real-time alarm information from a power distribution management system, and generating a real-time power failure information set (FRIS);
and S3, generating a distribution transformer misconnection information set TFCS according to the difference set between the FSIS and the FRIS, and generating a distribution transformer misconnection information set TMCS according to the difference set between the FRIS and the FSIS.
7. The distribution network line-change relationship recognition terminal of claim 6, wherein the step S1 when the processor executes the computer program specifically comprises the steps of:
s11, acquiring single line diagram topology information from the power distribution management system, and generating a single fault power failure information set SFIS which represents the connection relation between a single trip switch and a power failure distribution transformer:
SFIS(x)＝[ss1，ss2，…，ssi，…，ssn]；
and a set of trip switch devices TSES representing all trip switches on the same feeder line:
TSES(y)＝[ts1，ts2，…，tsj，…，tsm]；
s12, generating a feeder fault standard power failure information set FSIS which represents the connection relation between all tripping switches and the power loss distribution transformer on the same feeder according to the TSES and the SFIS:
FSIS(y)＝SFIS(ts1)∪SFIS(ts2)∪…SFIS(tsm)；
expressed as:
FSIS(y)＝[fs1，fs2，…，fsk，…，fsw]；
wherein SFIS (x) represents a single fault outage information set, ss, for the trip switch xiThe name of the ith power-losing distribution transformer in the single-fault power failure information set is represented by i belongs to {1, 2, …, n }, and n is the total power-losing distribution transformer in the single-fault power failure information setCounting;
TSES (y) sets of trip switches, ts, representing feeders yjJ is the name of the jth trip switch in the trip switch device set, belongs to {1, 2, …, m }, and m is the total number of trip switches in the trip switch device set;
FSIS (y) feeder fault standard outage information set, fs, representing feeder ykThe name of the kth power-losing distribution transformer in the feeder fault standard power failure information set is shown, k belongs to {1, 2, …, w }, and w is the total number of the power-losing distribution transformers in the feeder fault standard power failure information set.
8. The distribution network line-variation relationship identification terminal according to claim 6, wherein the FRIS is specifically generated as follows:
FRIS(y)＝[fr1，fr2，…，fra，…，frv]；
wherein FRIS (y) represents the feeder line y has the real-time power failure information set of the feeder line fault, fraThe name of the a-th power-losing distribution transformer in the real-time power failure information set is a belonging to {1, 2, …, v }, and v is the total number of the power-losing distribution transformers in the real-time power failure information set.
9. The distribution network line-change relationship identification terminal according to claim 6, wherein the generation of the TFCS is specifically:
TFCS(y)＝FSIS(y)-FRIS(y)；
expressed as:
TFCS(y)＝[tf1，tf2，…，tfb，…，tfp]；
wherein, tfcs (y) represents the distribution transformer misconnection information set of the feeder y, fris (y) represents the real-time power failure information set of the feeder y with the feeder fault, fsis (y) represents the feeder fault standard power failure information set of the feeder y, "-" is the complementary set operator, tfbAnd b belongs to {1, 2, …, p } for the name of the distribution transformer of the b-th misconnection connected to the feeder y in the misconnection information set of the distribution transformer, wherein p is the total number of the power-losing distribution transformers in the misconnection information set of the distribution transformer.
10. The power distribution network line-variable relationship identification terminal of claim 6, wherein the TMCS is specifically generated as follows:
TMCS(y)＝FRIS(y)-FSIS(y)；
expressed as:
TMCS(y)＝[tm1，tm2，…，tmc，…，tmq]；
TMCS (y) represents a distribution transformer missing connection information set of a feeder y, FRIS (y) represents a real-time power failure information set of the feeder y with feeder faults, FSIS (y) represents a feeder fault standard power failure information set of the feeder y, and "-" is a complementary set operator and tmcAnd c belongs to {1, 2, …, q } for the name of the distribution transformer which is the c-th distribution transformer in the distribution transformer misconnection information set and is connected to the feeder line y but is misconnected, and q is the total number of the power-losing distribution transformers in the distribution transformer misconnection information set.
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