CN112732716A

CN112732716A - Intelligent analysis method for fault SOE sequence formed by longitudinal actions of multiple power grid devices

Info

Publication number: CN112732716A
Application number: CN202011639512.4A
Authority: CN
Inventors: 李伟; 周俊宇; 吴海江; 唐鹤; 陈凯阳; 骆国铭; 陈晓彤; 黄炳翔; 梁锦来; 钟童科; 花洁; 何引生; 区允杰; 陈刚
Original assignee: Foshan Power Supply Bureau of Guangdong Power Grid Corp
Current assignee: Foshan Power Supply Bureau of Guangdong Power Grid Corp
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-04-30
Anticipated expiration: 2040-12-31
Also published as: CN112732716B

Abstract

Aiming at the technical problem that the complexity is too high and difficult to realize in the prior art, the invention provides an intelligent analysis method for a fault SOE sequence formed by the longitudinal actions of a plurality of power grid devices, which comprises the following steps: s1, extracting SOE messages from the SOE message table continuously, and grouping according to the time marks of the SOE messages to form SOE sequences; s2, the SOE messages in each group of SOE sequences are matched one by one, and the SOE messages of which the message contents comprise any keyword information in a preset criterion keyword table are screened out; s3, grouping and storing the selected SOE messages according to SOE message keywords in the message content, equipment description information corresponding to equipment IDs to which the SOE messages belong and whether equipment switches are in a maintenance state or not to obtain a data table A, B, C, D, E; and S4, respectively carrying out matching judgment on the SOE messages in the data table A, B, C, D, E according to a preset database, and summarizing the results of the matching judgment to be used as the analysis results of the SOE sequence.

Description

Intelligent analysis method for fault SOE sequence formed by longitudinal actions of multiple power grid devices

Technical Field

The invention relates to the technical field of intelligent diagnosis of power grid accidents, in particular to intelligent analysis of power grid accidents under the condition of complex faults, and more particularly relates to an intelligent analysis method of a fault SOE sequence formed by longitudinal actions of a plurality of power grid devices.

Background

The SOE, all called Sequence Of Event, refers to Event Sequence recording, and records the time when the fault occurred and the type Of Event. At present, intelligent analysis of power grid faults is mainly carried out through matching of SOE message keywords, firstly, SOE message sequences are grouped according to equipment IDs, then, each group of messages belonging to the same equipment ID is matched with a preset matching object, and then a fault judgment result is obtained; however, if the publication time is 2020-06-09, the publication number is CN 107294089B: an intelligent correlation analysis and evaluation method for power grid events shows that when the intelligent analysis of power grid accidents under complex fault conditions is difficult to perform in the prior art, particularly when a fault SOE sequence formed by longitudinal actions of a plurality of power grid devices is involved, the complexity of the prior method is multiplied by a geometric series, and the efficiency is low when the fault SOE sequence is converted into a specific computer program for implementation, and the technology is not feasible.

Disclosure of Invention

Aiming at the limitation of the prior art, the invention provides an intelligent analysis method for a fault SOE sequence formed by longitudinal actions of a plurality of power grid devices, and the invention adopts the technical scheme that:

a fault SOE sequence intelligent analysis method formed by longitudinal actions of a plurality of power grid devices comprises the following steps:

continuously extracting SOE messages from the SOE message table, and grouping according to the time scale of each SOE message to form an SOE sequence;

carrying out one-by-one matching on the SOE messages in each group of SOE sequences, and screening the SOE messages of which the message contents comprise any keyword information in a preset criterion keyword table;

grouping and storing the screened SOE messages according to SOE message keywords in the message content, equipment description information corresponding to equipment IDs to which the SOE messages belong and whether equipment switches are in an overhaul state or not to obtain a data table A for storing protection and displacement information of 500kV lines and interconnection switches, a data table B for storing protection and displacement information of 220kV line switches of 220kV substations, a data table C for storing 220kV bus bar actions of 220kV substations and displacement information of 220kV line switches, a data table D for storing 220kV backup power automatic switching actions of 220kV substations and displacement information of 110kV outgoing line switches, and a data table E for storing 110kV backup power automatic switching actions of 110kV substations and displacement information of 110kV line switches;

and respectively carrying out matching judgment on the SOE messages of the data table A, the data table B, the data table C, the data table D and the data table E according to a preset database, and summarizing the results of the matching judgment as the analysis results of the SOE sequences.

Compared with the prior art, the intelligent analysis method for the complex fault SOE sequence formed by the longitudinal actions of the plurality of power grid devices under the complex fault condition is provided, is not limited by specific power grid devices, has strong universality, can efficiently process SOE message data, obtains analysis and processing results with wide coverage and accuracy, improves the processing efficiency, and is easier to implement.

As a preferable scheme, the intelligent analysis method for the fault SOE sequence formed by the longitudinal actions of the plurality of power grid devices further comprises the following steps:

judging whether the current SOE message belongs to a 500kV message or not by inquiring whether the content of the SOE message comprises 500kV or not;

if the current SOE message belongs to a 500kV message, inquiring whether the equipment number in the equipment description corresponding to the equipment ID is formed by five digits with the tail number of 6 from a preset primary equipment ledger information table by inquiring the equipment ID to which the SOE message belongs from a preset measuring point table, and judging whether the equipment to which the current SOE message belongs is a line 6 tool;

if the current equipment to which the 500kV message belongs is 6 line switches, inquiring an interval serial number corresponding to a 500kV line switch which belongs to the same transformer substation as the current 500kV message and is formed by four digits in the primary equipment account information table;

if the current equipment to which the 500kV message belongs is not the line 6-pole, judging whether the current equipment to which the 500kV message belongs is a contact switch or not by inquiring the equipment ID to which the current 500kV message belongs from a preset measuring point table and then inquiring whether the equipment number in the equipment description corresponding to the equipment ID is a four-digit composition with the tail number of 2 from the primary equipment ledger information table;

if the current 500kV message belongs to the equipment which is the contact switch, inquiring an interval serial number corresponding to the 500kV line switch which belongs to the same transformer substation with the current 500kV message and is formed by three digits in the primary equipment account information table;

inquiring whether the 500kV line switch in the step S305 has a maintenance board from a preset board hanging equipment table, and judging whether the 500kV line switch is in a maintenance state;

if the current equipment to which the 500kV message belongs is not the contact switch, inquiring the equipment ID to which the current 500kV message belongs from the measuring point table, and inquiring the interval serial number corresponding to the equipment ID from the primary equipment standing book information table; judging whether the current equipment to which the 500kV message belongs is a line switch or not by inquiring whether the equipment description corresponding to the equipment ID comprises the line switch or not;

if the current equipment to which the 500kV message belongs is a line switch, whether the line switch is in a maintenance state is judged by inquiring whether the line switch has a maintenance board from the board hanging equipment table;

and grouping the attributive equipment into 500kV messages of 6-knife lines, wherein the attributive equipment is a contact switch and 500kV messages of 500kV line switches composed of three digits of the same transformer substation in the maintenance state, the attributive equipment is a line switch and 500kV messages of which the line switches are not in the maintenance state, and storing the 500kV messages in the data table A according to the interval sequence numbers.

Further, the intelligent analysis method for the fault SOE sequence formed by the longitudinal actions of the plurality of power grid devices further comprises the following steps:

if the current SOE message belongs to a 220kV message, inquiring equipment ID to which the current 220kV message belongs from a preset measuring point table, and inquiring an interval serial number corresponding to the equipment ID from a preset primary equipment account information table; judging whether the current equipment to which the 220kV message belongs is a line switch or not by inquiring whether the equipment description corresponding to the equipment ID comprises the line switch or not;

if the current equipment to which the 220kV message belongs is a line switch, whether the line switch is in a maintenance state is judged by inquiring whether the line switch has a maintenance plate from a preset plate hanging equipment table;

grouping the 220kV messages which belong to equipment and are not in the maintenance state and are line switches according to the interval sequence numbers, and storing the messages in the data table B;

for a 220kV message which belongs to a line switch and is not in a maintenance state, whether the message content is switch displacement information or not is judged by inquiring whether the message content comprises 'off' or 'on' or not;

if the current 220kV message belongs to equipment which is not a line switch, judging whether the current 220kV message belongs to bus differential matters or not by inquiring whether the message content comprises bus differential protection or bus differential protection;

grouping the 220kV messages which belong to the mother-difference items and are the line switches and not in the maintenance state and the message content of which is the switch displacement information, according to the names of the transformer stations in the SOE messages, and storing the messages in the data table C;

if the current 220kV message does not belong to the bus difference item, judging whether the current 220kV message belongs to the spare power automatic switching item or not by inquiring whether the message content comprises a spare power automatic switching action or not;

and grouping the 220kV messages which belong to spare power automatic switching items and belong to the 220kV messages of which the belonging equipment is a line switch and is not in the maintenance state and the message content is switch displacement information according to the names of the transformer stations in the SOE messages, and storing the messages in the data table D.

Further, in the step of generating a countermeasure network to graphically map the power distribution equipment defect image to obtain a defect simulation image, and extending the training set according to the defect simulation image, the method further includes the following steps:

and screening the defect simulation image, labeling the power distribution equipment information and the defect type of the power distribution equipment in the defect simulation image, and adding the screened and labeled defect simulation image into the training set.

judging whether the current SOE message belongs to a 110kV message or not by inquiring whether the content of the SOE message comprises 110kV or not;

if the current SOE message belongs to a 110kV message, inquiring equipment ID to which the current 110kV message belongs from the measuring point table, and inquiring an interval serial number corresponding to the equipment ID from the primary equipment standing book information table; judging whether the current 110kV message-belonging equipment is a line switch or not by inquiring whether the equipment description corresponding to the equipment ID comprises the line switch or not;

if the current 110kV message belongs to the equipment which is a line switch, judging whether the message content is switch displacement information or not by inquiring whether the message content comprises 'open' or 'closed';

if the current 110kV message and the belonging equipment are line switches and the message content is switch displacement information, whether the line switches are in a maintenance state is judged by inquiring whether the line switches have maintenance cards from the card hanging equipment table;

grouping the affiliated equipment which is a line switch and is not in a maintenance state, wherein the message content is a 220kV message of switch displacement information, and the affiliated equipment which is a line switch and is 110kV message of switch displacement information and in a maintenance state is grouped according to the name of a transformer station in an SOE message and stored in the data table D;

if the current 110kV message belongs to equipment which is not a line switch, judging whether the message content belongs to a spare power automatic switching item or not by inquiring whether the message content comprises a spare power automatic switching action or not;

grouping the 110kV messages which belong to spare power automatic switching items and belong to 110kV messages which belong to line switches and have message contents of switch deflection information and are not in the maintenance state of the line switches according to the names of the transformer stations in the SOE messages, and storing the messages in the data table E

and inquiring each group of SOE messages in the data table A, if the message content of the group of SOE messages comprises any rule in a preset 500kV line tripping rule base, judging that the SOE sequence at least represents that a 500kV line tripping event corresponding to the rule occurs once, wherein the specific tripping equipment is a 500kV line with the interval sequence number of the group of SOE messages corresponding to the preset primary equipment table.

inquiring each group of SOE messages in the data table C, and if the message content of one SOE message comprises bus differential protection or bus differential protection and the message content of the other SOE message comprises open or closed, judging that the SOE sequence at least represents that a 220kV bus differential action event occurs in a transformer substation to which the group of messages belong; the specific fault bus number is a number XM formed by adding one digit X to M in an SOE message containing bus differential protection or bus differential protection;

if the SOE sequence at least represents that a 220kV bus differential action event occurs to a substation to which the group of messages belongs, inquiring each group of SOE messages in the data table B, if the message content of any SOE message comprises protection, and the message content of three SOE messages respectively comprises ' A-phase switch disconnection ', ' B-phase switch disconnection ', ' C-phase switch disconnection ', and the message content of the SOE message does not comprise reclosing ', judging that the SOE sequence at least represents that a 220kV line phase-to-phase fault occurs to the SOE sequence, and specifically, the tripping substation and the equipment are the substation and the 220kV line corresponding to the interval sequence number to which the group of SOE messages belongs in the primary equipment table;

if the tripping transformer substation obtained by the previous analysis is the same transformer substation, judging that the SOE sequence at least represents that a protection overlapping region fault occurs, and positioning a fault point between an XM bus CT and the fault line switch CT of the transformer substation; and if the tripping transformer substations obtained by the analysis are two different transformer substations, and a preset line detailed table is inquired to obtain a starting station and a terminal station of two stations belonging to a certain line, merging the phase-to-phase fault and the bus differential fault, and judging that the SOE sequence at least represents that the bus differential starting long jump fault occurs once.

inquiring each group of SOE messages in the data table D, and if the message content of any SOE message comprises 220kV spare power automatic switching, the message content of at least one SOE message comprises 220kV and switch disconnection, and the message content of at least one SOE message comprises 110kV and switch disconnection, and the line name keywords included by the SOE message can be inquired in the load shedding sequence of the station from a preset safety configuration table, judging that the SOE sequence at least represents that the station to which the group belongs generates a 220kV spare power automatic switching load event;

inquiring each group of SOE messages in the data table E, if the message content of any SOE message comprises 110kV spare power automatic switching, the message content of at least one SOE message comprises switch off, the message content of the other two SOE messages with the same line switch name keyword comprises switch on and switch off, and the time that the message content comprises the SOE message with the switch on is prior to the time that the message content comprises the SOE message with the switch off, judging that the SOE sequence at least represents that the station to which the group belongs has 110kV spare power automatic switching failure event;

if the SOE sequence at least represents that the station to which the group belongs generates a 110kV spare power automatic switching failure event once, obtaining line name keywords from the SOE messages with the same two line switch name keywords, inquiring and matching the device description of the primary device ledger table to obtain a primary device ID to which the group belongs, obtaining a 110kV bus and accessory devices thereof connected with the device from the primary device incidence relation table according to the device ID, and taking the 110kV bus and the accessory devices thereof as spare power automatic switching failure event fault points.

The invention also comprises the following:

an intelligent analysis system for a fault SOE sequence comprises an SOE sequence generation module, an SOE message screening module, a data table grouping storage module and an analysis, judgment and summary module; the SOE message screening module is connected with the SOE sequence generating module, the data table grouping storage module is connected with the SOE message screening module, and the analysis, judgment and summary module is connected with the data table grouping storage module;

the SOE sequence generation module is used for continuously extracting SOE messages from the SOE message table and grouping according to the time marks of all the SOE messages to form SOE sequences;

the SOE message screening module is used for matching SOE messages in each group of SOE sequences one by one and screening the SOE messages of which the message contents comprise any keyword information in a preset criterion keyword table;

the data table grouping storage module is used for grouping and storing the screened SOE messages according to SOE message keywords in message contents, equipment description information corresponding to equipment IDs to which the SOE messages belong and whether equipment switches are in an overhauling state or not to obtain a data table A for storing protection and displacement information of 500kV lines and interconnection switches, a data table B for storing protection and displacement information of 220kV line switches of a 220kV transformer substation, a data table C for storing 220kV bus differential actions of the 220kV transformer substation and displacement information of the 220kV line switches, a data table D for storing 220kV backup power automatic switching actions of the 220kV transformer substation and displacement information of 110kV outgoing line switches, and a data table E for storing 110kV backup power automatic switching actions of the 110kV transformer substation and displacement information of the 110kV line switches;

and the analysis, judgment and summarization module is used for respectively carrying out matching judgment on the SOE messages of the data table A, the data table B, the data table C, the data table D and the data table E according to a preset database, and summarizing a result of the matching judgment as an analysis result of the SOE sequence.

A storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the steps of the aforementioned intelligent analysis method for fault SOE sequences constituted by sequential actions of a plurality of grid devices.

A computer device comprises a storage medium, a processor and a computer program which is stored in the storage medium and can be executed by the processor, wherein when the computer program is executed by the processor, the steps of the intelligent analysis method for the fault SOE sequence formed by the longitudinal actions of the plurality of power grid devices are realized.

Drawings

Fig. 1 is a flowchart illustrating steps of a fault SOE sequence intelligent analysis method formed by a plurality of grid devices in a sequential manner according to embodiment 1 of the present invention;

fig. 2 is a flowchart of step S3 provided in embodiment 1 of the present invention;

fig. 3 is a flowchart of step S4 provided in embodiment 1 of the present invention;

fig. 4 is a schematic diagram of a fault SOE sequence intelligent analysis system formed by a plurality of power grid devices in a longitudinal motion manner according to embodiment 2 of the present invention;

description of reference numerals: 1. an SOE sequence generation module; 2. an SOE message screening module; 3. a data table grouping storage module; and 4, an analysis judgment and summary module.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent;

it should be understood that the embodiments described are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the embodiments in the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims. In the description of the present application, it is to be understood that the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not necessarily used to describe a particular order or sequence, nor are they to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Further, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The invention is further illustrated below with reference to the figures and examples.

In order to solve the limitation of the prior art, the present embodiment provides a technical solution, and the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

Example 1

Referring to fig. 1, a method for intelligently analyzing a fault SOE sequence formed by the longitudinal actions of a plurality of grid devices includes the following steps:

s1, extracting SOE messages from the SOE message table continuously, and grouping according to the time marks of the SOE messages to form SOE sequences;

s2, the SOE messages in each group of SOE sequences are matched one by one, and the SOE messages of which the message contents comprise any keyword information in a preset criterion keyword table are screened out;

s3, grouping and storing the selected SOE messages according to SOE message keywords in the message content, equipment description information corresponding to equipment IDs to which the SOE messages belong and whether equipment switches are in an overhaul state or not to obtain a data table A for storing protection and displacement information of 500kV lines and tie switches, a data table B for storing protection and displacement information of 220kV line switches of a 220kV transformer substation, a data table C for storing 220kV bus differential actions and displacement information of 220kV line switches of the 220kV transformer substation, a data table D for storing 220kV spare power automatic switching actions and 110kV outgoing line switch displacement information of the 220kV transformer substation, and a data table E for storing 110kV spare power automatic switching actions and 110kV line switch displacement information of the 110kV transformer substation;

and S4, respectively carrying out matching judgment on the SOE messages of the data table A, the data table B, the data table C, the data table D and the data table E according to a preset database, and summarizing the results of the matching judgment as the analysis results of the SOE sequence.

Specifically, in step S1, the packets are grouped according to the time scales T1, T2, and T3.. Tn of the packets stored in the SOE packet table, where the time scale span of the head and the tail SOE packets in each group is 20 seconds, and the time scale interval of the first SOE packet in the adjacent group is 15 seconds.

The database used in this embodiment includes a primary equipment standing book information table, an SOE message table, a listing equipment table, a measuring point table, a primary equipment connection relation table, and a line detail table from an SCADA web system; a 500kV line trip rule base and criterion keywords from an intelligent diagnostic expert system; the safety configuration table from the local system and maintained by the operator through the system is as follows:

the storage structure of the primary equipment standing book information table at least comprises the following attributes:

device ID

Device encoding

Description of the apparatus

Voltage class

Home substation

Home interval

The storage structure of the SOE message table at least comprises the following attributes:

message sequence number

Message time mark

Message corresponding to the name of the test point

Home substation

Message content

The storage structure of the listing device table at least comprises the following attributes:

device ID

Type of hang tag

Start time of listing

The storage structure of the measuring point table at least comprises the following attributes:

measuring point ID

Name of survey point

Point description

Measurement point attribution equipment ID

Measuring point attribution transformer substation

The storage structure of the primary device connection relation table at least comprises the following attributes:

device ID

Terminal point

Terminal connection node

The "route detail table" storage structure contains at least the following attributes:

line equipment ID

Origin station ID

Terminal station ID

The detailed keywords in the "criterion keywords" table are as follows:

the detailed rules in the table of the '500 kV line trip rule base' are as follows:

the storage structure in the "security configuration" table at least contains the following attributes:

substation ID

Line switch ID

Linkage switching execution sequence number

Referring to fig. 2, as a preferred embodiment, the step S3 further includes the following steps:

s301, judging whether the current SOE message belongs to a 500kV message by inquiring whether the content of the SOE message comprises 500 kV;

s302, if the current SOE message belongs to a 500kV message, inquiring whether the equipment number in the equipment description corresponding to the equipment ID is formed by five digits with the tail number of 6 from a preset primary equipment ledger information table by inquiring the equipment ID to which the SOE message belongs from a preset measuring point table, and judging whether the equipment to which the current SOE message belongs is a line 6 knife;

s303, if the current equipment to which the 500kV message belongs is 6 line switches, inquiring an interval serial number corresponding to a 500kV line switch which belongs to the same transformer substation as the current 500kV message and is formed by four digits in the primary equipment account information table;

s304, if the current equipment to which the 500kV message belongs is not the line 6-pole, judging whether the current equipment to which the 500kV message belongs is a contact switch or not by inquiring the equipment ID to which the current 500kV message belongs from a preset measuring point table and then inquiring whether the equipment number in the equipment description corresponding to the equipment ID is formed by four digits with the tail number of 2 or not from the primary equipment account information table;

s305, if the current equipment to which the 500kV message belongs is an interconnection switch, inquiring an interval serial number corresponding to the 500kV line switch which belongs to the same transformer substation and is formed by three digits in number from the primary equipment account information table;

s306, inquiring whether the 500kV line switch in the step S305 has a maintenance board from a preset board hanging equipment table, and judging whether the 500kV line switch is in a maintenance state;

s307, if the current equipment to which the 500kV message belongs is not the contact switch, inquiring the equipment ID to which the current 500kV message belongs from the measuring point table, and inquiring the interval serial number corresponding to the equipment ID from the primary equipment standing book information table; judging whether the current equipment to which the 500kV message belongs is a line switch or not by inquiring whether the equipment description corresponding to the equipment ID comprises the line switch or not;

s308, if the current equipment to which the 500kV message belongs is a line switch, whether the line switch is in a maintenance state is judged by inquiring whether the line switch has a maintenance board from the board hanging equipment table;

s309, grouping the 500kV messages of which the attributive equipment is 6-pole line, the 500kV messages of which the attributive equipment is a contact switch and the 500kV line switch composed of three-digit numbers of the same transformer substation is in the maintenance state, and the 500kV messages of which the attributive equipment is a line switch and the line switch is not in the maintenance state according to the interval sequence number, and storing the 500kV messages in the data table A.

Further, the step S3 further includes the following steps:

s310, if the current SOE message does not belong to the 500kV message, judging whether the current SOE message belongs to the 220kV message by inquiring whether the content of the SOE message comprises 220 kV;

s311, if the current SOE message belongs to a 220kV message, inquiring the equipment ID to which the current 220kV message belongs from a preset measuring point table, and inquiring the interval serial number corresponding to the equipment ID from a preset primary equipment ledger information table; judging whether the current equipment to which the 220kV message belongs is a line switch or not by inquiring whether the equipment description corresponding to the equipment ID comprises the line switch or not;

s312, if the current equipment to which the 220kV message belongs is a line switch, whether the line switch is in a maintenance state is judged by inquiring whether the line switch has a maintenance board from a preset card hanging equipment table;

s313, grouping the 220kV messages which belong to the equipment and are not in the maintenance state and are line switches according to the interval sequence numbers, and storing the messages in the data table B;

s314, judging whether the message content is switch displacement information or not by inquiring whether the message content comprises 'open' or 'closed' for the 220kV message of which the belonging equipment is a line switch and is not in the maintenance state;

s315, if the current 220kV message belongs to a device which is not a line switch, judging whether the current 220kV message belongs to bus differential matters or not by inquiring whether the message content comprises bus differential protection or bus differential protection;

s316, grouping the 220kV messages which belong to the mother-difference items and are respectively in the line switch state, the maintenance state and the switch displacement information, wherein the belonged equipment is the line switch, the 220kV messages are not in the maintenance state, the message contents are the switch displacement information, and the 220kV messages are stored in the data table C;

s317, if the current 220kV message does not belong to the bus difference item, judging whether the current 220kV message belongs to the spare power automatic switching item or not by inquiring whether the message content comprises the spare power automatic switching action or not;

and S318, grouping the 220kV messages which belong to the spare power automatic switching items and belong to the 220kV messages of which the belonged equipment is the line switch and is not in the maintenance state and the message content is the switch displacement information according to the transformer station name in the SOE message, and storing the messages in the data table D.

As a preferred embodiment, in step S3, the method further includes the following steps:

s319, judging whether the current SOE message belongs to the 110kV message or not by inquiring whether the content of the SOE message comprises 110kV or not, wherein the current SOE message does not belong to the 220kV message;

s320, if the current SOE message belongs to a 110kV message, inquiring the equipment ID to which the current 110kV message belongs from the measuring point table, and inquiring the interval serial number corresponding to the equipment ID from the primary equipment standing book information table; judging whether the current 110kV message-belonging equipment is a line switch or not by inquiring whether the equipment description corresponding to the equipment ID comprises the line switch or not;

s321, if the current 110kV message belonging equipment is a line switch, judging whether the message content is switch displacement information by inquiring whether the message content comprises 'open' or 'closed';

s322, if the current 110kV message and the belonging equipment are line switches and the message content is switch displacement information, whether the line switches are in a maintenance state is judged by inquiring whether the line switches have maintenance signs from the listing equipment table;

s318, grouping the affiliated 220kV messages with the equipment being a line switch and not being in the overhaul state and the message content being switch displacement information, and the 220kV messages belonging to the spare power automatic switching items, wherein the affiliated equipment being a line switch and the message content being switch displacement information and the line switch being in the overhaul state 110kV messages according to the transformer station names in the SOE messages, and storing the messages in the data table D;

s323, if the current 110kV message belongs to equipment which is not a line switch, judging whether the message content belongs to a spare power automatic switching item or not by inquiring whether the message content comprises a spare power automatic switching action or not;

and S324, grouping the 110kV messages of which the belonged equipment is the line switch, the message content is the switch displacement information and the line switch is not in the maintenance state and the 110kV messages of which the spare power automatic switching events belong to according to the transformer station name in the SOE message, and storing the messages in the data table E.

Referring to fig. 3, as a preferred embodiment, step S4 includes the following steps:

s401, inquiring each group of SOE messages in the data table A, if the message content of the group of SOE messages includes any rule in a preset 500kV line tripping rule base, judging that the SOE sequence at least represents that a 500kV line tripping event corresponding to the rule occurs once, wherein specific tripping equipment is a 500kV line corresponding to the interval sequence number of the group of SOE messages in a preset primary equipment table.

As a preferred embodiment, step S4 includes the following steps:

s402, inquiring each group of SOE messages in the data table C, and if the message content of one SOE message comprises bus differential protection or bus differential protection and the message content of the other SOE message comprises disconnection or connection, judging that the SOE sequence at least represents that a 220kV bus differential action event occurs in a transformer substation to which the group of messages belong; the specific fault bus number is a number XM formed by adding one digit X to M in an SOE message containing bus differential protection or bus differential protection;

s403, if the SOE sequence at least represents that a 220kV bus differential action event occurs to a substation to which the group of messages belongs, inquiring each group of SOE messages in the data table B, if the message content of any SOE message comprises protection, and the message content of three SOE messages respectively comprises ' A-phase switch disconnection ', ' B-phase switch disconnection ', ' C-phase switch disconnection ', and the message content of the SOE message does not comprise reclosing ', judging that the SOE sequence at least represents that a 220kV inter-phase line fault occurs to the SOE sequence, wherein a specific tripping substation and equipment are the substation and the 220kV line corresponding to the interval sequence number to which the group of SOE messages belongs in the primary equipment table;

s404, if the tripped substation obtained by the analysis in the steps S402 and S404 is the same substation, the SOE sequence is judged to at least represent that the protection overlapping region fault occurs, and the positioning fault point is between the XM bus CT of the substation and the fault line switch CT in the step S8; if the tripped substations analyzed in the steps 402 and 404 are two different substations and the preset line detail table is inquired to obtain a starting station and a terminal station of two stations belonging to a certain line, merging the phase-to-phase fault and the bus differential fault, and determining that the SOE sequence at least represents that the bus differential start long trip fault occurs once

As a preferred embodiment, step S4 includes the following steps:

s405, inquiring each group of SOE messages in the data table D, and if the message content of any SOE message comprises 220kV spare power automatic switching, the message content of at least one SOE message comprises 220kV and switch disconnection, and the message content of at least one SOE message comprises 110kV and switch disconnection, and the line name keywords included by the SOE message can be inquired in the load shedding sequence of the station from a preset safety configuration table, judging that the SOE sequence at least represents that the station to which the group belongs has a 220kV spare power automatic switching load event;

s406, each group of SOE messages in the data sheet E is inquired, if the message content of any SOE message comprises 110kV spare power automatic switching, the message content of at least one SOE message comprises switch off, and the message content of another two SOE messages with the same line switch name keyword comprises switch on and switch off respectively, and the time of the SOE message with the switch on in the message content is prior to the time of the SOE message with the switch off in the message content, the SOE sequence is judged to at least represent that 110kV spare power automatic switching failure events occur to the station to which the group belongs;

s407, if the SOE sequence at least represents that the station to which the group belongs has a 110kV spare power automatic switching failure event, obtaining line name keywords from the SOE message with the same two line switch name keywords in the step 406, inquiring and matching the equipment description in the primary equipment ledger table to obtain a primary equipment ID to which the group belongs, obtaining a 110kV bus and accessory equipment thereof connected with the equipment from the primary equipment incidence relation table according to the equipment ID, and taking the 110kV bus and the accessory equipment thereof as a spare power automatic switching failure event fault point.

Example 2

An intelligent analysis system for fault SOE sequences formed by the longitudinal actions of a plurality of power grid devices, please refer to FIG. 4, which comprises an SOE sequence generation module 1, an SOE message screening module 2, a data table grouping storage module 3 and an analysis, judgment and summary module 4; the SOE message screening module 2 is connected with the SOE sequence generating module 1, the data table grouping storage module 3 is connected with the SOE message screening module 2, and the analysis judgment summarizing module 4 is connected with the data table grouping storage module 3;

the SOE sequence generation module 1 is used for continuously extracting SOE messages from the SOE message table and grouping according to the time marks of all the SOE messages to form SOE sequences;

the SOE message screening module 2 is used for matching SOE messages in each group of SOE sequences one by one, and screening the SOE messages of which the message contents comprise any keyword information in a preset criterion keyword table;

the data table grouping storage module 3 is used for grouping and storing the screened SOE messages according to SOE message keywords in message contents, equipment description information corresponding to equipment IDs to which the SOE messages belong and whether equipment switches are in an overhaul state or not to obtain a data table A for storing protection and displacement information of 500kV lines and interconnection switches, a data table B for storing protection and displacement information of 220kV line switches of a 220kV transformer substation, a data table C for storing 220kV bus differential actions of the 220kV transformer substation and displacement information of the 220kV line switches, a data table D for storing 220kV backup power automatic switching actions of the 220kV transformer substation and displacement information of 110kV outgoing line switches, and a data table E for storing 110kV backup power automatic switching actions of the 110kV transformer substation and displacement information of the 110kV line switches;

and the analysis, judgment and summarization module 4 is used for respectively carrying out matching judgment on the SOE messages of the data table A, the data table B, the data table C, the data table D and the data table E according to a preset database, and summarizing a matching judgment result as an analysis result of the SOE sequence.

Example 3

A storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the steps of the intelligent analysis method for fault SOE sequence composed of sequential actions of a plurality of power grid devices in embodiment 1.

Example 4

A computer device includes a storage medium, a processor, and a computer program stored in the storage medium and executable by the processor, where the computer program, when executed by the processor, implements the steps of the intelligent analysis method for fault SOE sequence composed of multiple power grid device sequential actions in embodiment 1.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A fault SOE sequence intelligent analysis method formed by longitudinal actions of a plurality of power grid devices is characterized by comprising the following steps:

2. The method for intelligently analyzing the fault SOE sequence formed by the longitudinal actions of the plurality of power grid devices according to claim 1, wherein the step S3 further comprises the following steps:

3. The method for intelligently analyzing the fault SOE sequence formed by the longitudinal actions of the plurality of power grid devices according to claim 1, wherein the step S3 further comprises the following steps:

4. The method for intelligently analyzing the fault SOE sequence formed by the longitudinal actions of the plurality of power grid devices according to claim 3, wherein in the step S3, the method further comprises the following steps:

5. The method for intelligently analyzing the fault SOE sequence formed by the longitudinal actions of the plurality of power grid devices according to claim 1, wherein the step S4 comprises the following steps:

6. The method for intelligently analyzing the fault SOE sequence formed by the longitudinal actions of the plurality of power grid devices according to claim 1, wherein the step S4 comprises the following steps:

s404, if the tripped substation obtained by the analysis in the steps S402 and S404 is the same substation, the SOE sequence is judged to at least represent that the protection overlapping region fault occurs, and the positioning fault point is between the XM bus CT of the substation and the fault line switch CT in the step S8; if the tripped substations analyzed in the steps 402 and 404 are two different substations, and a preset line detail table is queried to obtain a starting station and a terminal station of two stations belonging to a certain line, merging the phase-to-phase fault and the bus differential fault, and determining that the SOE sequence at least represents that the bus differential start long trip fault occurs once.

7. The intelligent analysis system for fault SOE sequences according to claim 1, wherein the step S4 comprises the following steps:

8. The intelligent analysis system for the fault SOE sequence formed by the longitudinal actions of a plurality of power grid devices is characterized by comprising an SOE sequence generation module (1), an SOE message screening module (2), a data table grouping storage module (3) and an analysis, judgment and summary module (4); the SOE message screening module (2) is connected with the SOE sequence generating module (1), the data table grouping storage module (3) is connected with the SOE message screening module (2), and the analysis judgment summarizing module (4) is connected with the data table grouping storage module (3);

the SOE sequence generating module (1) is used for continuously extracting SOE messages from the SOE message table and grouping according to the time marks of all the SOE messages to form SOE sequences;

the SOE message screening module (2) is used for matching SOE messages in each group of SOE sequences one by one and screening the SOE messages of which the message contents comprise any keyword information in a preset criterion keyword table;

the data table grouping storage module (3) is used for grouping and storing the selected SOE messages according to SOE message keywords in message contents, equipment description information corresponding to equipment IDs to which the SOE messages belong and whether equipment switches are in an overhaul state or not to obtain a data table A for storing protection and displacement information of 500kV lines and interconnection switches, a data table B for storing protection and displacement information of 220kV line switches of a 220kV transformer substation, a data table C for storing 220kV bus differential actions of the 220kV transformer substation and displacement information of the 220kV line switches, a data table D for storing 220kV backup power automatic switching actions of the 220kV transformer substation and displacement information of 110kV outgoing line switches, and a data table E for storing 110kV backup power automatic switching actions of the 110kV transformer substation and displacement information of the 110kV line switches;

and the analysis, judgment and summarization module (4) is used for respectively carrying out matching judgment on the SOE messages of the data table A, the data table B, the data table C, the data table D and the data table E according to a preset database, and summarizing a matching judgment result as an analysis result of the SOE sequence.

9. A storage medium having a computer program stored thereon, the computer program comprising: the computer program when executed by a processor implements the steps of a method for intelligent analysis of a sequence of fault SOE consisting of a plurality of grid device longitudinal actions according to any one of claims 1 to 7.

10. A computer device, characterized by: the method comprises a storage medium, a processor and a computer program stored in the storage medium and executable by the processor, wherein the computer program when executed by the processor implements the steps of the intelligent analysis method for fault SOE sequence composed of the plurality of power grid equipment longitudinal actions according to any one of claims 1 to 7.