CN114221312B - Power distribution network protection rapid setting and checking method based on topological relation - Google Patents
Power distribution network protection rapid setting and checking method based on topological relation Download PDFInfo
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- CN114221312B CN114221312B CN202111652521.1A CN202111652521A CN114221312B CN 114221312 B CN114221312 B CN 114221312B CN 202111652521 A CN202111652521 A CN 202111652521A CN 114221312 B CN114221312 B CN 114221312B
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- distribution network
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/50—Information retrieval; Database structures therefor; File system structures therefor of still image data
- G06F16/51—Indexing; Data structures therefor; Storage structures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/021—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Abstract
The invention provides a power distribution network protection rapid setting and checking method based on topological relation, which is characterized by comprising the following steps: acquiring a GIS system single line diagram, identifying protection equipment and generating a protection configuration simplified diagram in real time; converting the image into characters, outputting structured data, and storing the structured data in a database; generating a constant value by one key of the topological relation identified by the GIS map; then, device-level programming of a fixed-value single template is carried out, and principle-level data are automatically read after the template programming is completed; s4: and calculating and judging the fixed value position where the problems of improper fixed value matching, out-of-order matching, out-of-limit matching and the like occur through intelligent association drawings and topology technology, intelligently finding out the abnormal fixed value, pushing messages, realizing accident reproduction, and giving out modification comments. According to the invention, the protection setting calculation time of a single automatic switch is shortened from 17.5 minutes to 3.5 minutes, the relay protection setting working efficiency of the distribution network is improved to be more than or equal to 400%, the relay protection setting calculation time of the distribution network is shortened to the limit, and the working efficiency is improved.
Description
Technical Field
The invention relates to the field of power distribution network checking, in particular to a power distribution network protection rapid setting and checking method based on topological relation.
Background
The existing 35/10kV distribution network line has complex structure and numerous brand models of protection equipment, the fixed value setting of the 35/10kV distribution network line needs more factors to be considered, the unified fixed value setting standard is lacking at present, the distribution network fixed value setting calculation mainly depends on manual calculation, the workload is huge, the workload of the ground distribution network setting calculation is greatly increased along with the comprehensive collecting and ground adjustment of the distribution network setting calculation, the situation that the repeatability exists, the errors exist in the calculation result and the like exists in the work exists, the work of parameter data management, expert rule library management, fixed value data management, setting calculation, calculation book generation, fixed value list generation, statistical analysis and the like of fixed value setting is finished only by manpower, the workload is huge and is easy to make mistakes, and a complete set of software system support does not exist. In addition, with the overall receiving and returning of the setting calculation of the distribution network, the setting calculation workload of the ground distribution network is greatly increased, and the requirement of actual work cannot be met in the aspect of improving the overall efficiency of relay protection work.
Disclosure of Invention
The invention aims to provide a power distribution network protection rapid setting and checking method based on a topological relation, so as to solve the problems in the background technology.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a power distribution network protection rapid setting and checking method based on topological relation is characterized by comprising the following steps:
s1: acquiring a GIS system single line diagram, identifying protection equipment and generating a protection configuration simplified diagram in real time;
s2: the image is converted into characters by means of an image-text recognition technology, structured data are output, and the characters are automatically recorded to the background, so that labor can be greatly saved, the efficiency is improved, and the characters are stored in a database;
s3: setting the structured data to a principle level to calculate and generate a constant value, and particularly generating the constant value by one key of the topological relation identified by the GIS map; then, device-level programming of a fixed-value single template is carried out, and principle-level data are automatically read after the template programming is completed;
s4: and calculating and judging the fixed value position where the problems of improper fixed value matching, out-of-order matching, out-of-limit matching and the like occur through intelligent association drawings and topology technology, intelligently finding out the abnormal fixed value, pushing messages, realizing accident reproduction, and giving out modification comments.
In step S2, the graphic recognition technology is specifically used to report the device parameters, the distribution network single line diagram and the real-time data by using the OCS, the graphic model system data interface and the device parameters with various formats, so as to provide basic data support for subsequent calculation.
In the step S3, a standardized expert intelligent configuration rule base is built by a digital visualization method to realize visual interactive configuration of a setting principle formula, so that various principle level computing requirements are met, a standardized value setting single template is formulated, and a basic template is provided for quick programming of various equipment model value setting single templates.
In the step S4, accident reproduction is specifically implemented based on the network topology method and dynamic data, and the accident is intelligently analyzed to provide an auxiliary decision.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the protection setting calculation time of a single automatic switch is shortened from 17.5 minutes to 3.5 minutes, the relay protection setting working efficiency of the distribution network is improved to be more than or equal to 400%, the relay protection setting calculation time of the distribution network is shortened to the limit, and the working efficiency is improved. The distribution network intelligent protection setting calculation and fault analysis platform based on the full information data stream effectively shortens the relay protection setting calculation time of the distribution network, improves the relay protection setting working efficiency of the distribution network, and further avoids human false setting events caused by false parameter data.
Drawings
FIG. 1 is a schematic diagram of a flow frame structure of a power distribution network protection rapid setting and checking method based on topological relation;
fig. 2 is a schematic diagram of a power distribution network protection rapid setting platform page based on a topological relation.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by persons skilled in the art without making creative efforts based on the embodiments in the present invention are all within the protection scope of the present invention.
Examples
As shown in FIG. 1, a method for quickly setting and checking protection of a power distribution network based on topological relation is characterized by comprising the following steps of
S1: acquiring a GIS system single line diagram, identifying protection equipment and generating a protection configuration simplified diagram in real time;
s2: the image is converted into characters by means of an image-text recognition technology, structured data are output, and the characters are automatically recorded to the background, so that labor can be greatly saved, the efficiency is improved, and the characters are stored in a database;
s3: setting the structured data to a principle level to calculate and generate a constant value, and particularly generating the constant value by one key of the topological relation identified by the GIS map; then, device-level programming of a fixed-value single template is carried out, and principle-level data are automatically read after the template programming is completed;
s4: and calculating and judging the fixed value position where the problems of improper fixed value matching, out-of-order matching, out-of-limit matching and the like occur through intelligent association drawings and topology technology, intelligently finding out the abnormal fixed value, pushing messages, realizing accident reproduction, and giving out modification comments.
In step S2, the graphic recognition technology is specifically used to report the device parameters, the distribution network single line diagram and the real-time data by using the OCS, the graphic model system data interface and the device parameters with various formats, so as to provide basic data support for subsequent calculation.
In the step S3, a standardized expert intelligent configuration rule base is built by a digital visualization method to realize visual interactive configuration of a setting principle formula, so that various principle level computing requirements are met, a standardized value setting single template is formulated, and a basic template is provided for quick programming of various equipment model value setting single templates.
In the step S4, accident reproduction is specifically implemented based on the network topology method and dynamic data, and the accident is intelligently analyzed to provide an auxiliary decision.
Fig. 2 is a schematic diagram of a power distribution network protection rapid setting platform page based on a topological relation in the embodiment.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, and that the foregoing embodiments and description are merely preferred embodiments of the invention, and are not intended to limit the invention, but that various changes and modifications may be made therein without departing from the novel spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. A power distribution network protection rapid setting and checking method based on topological relation is characterized by comprising the following steps:
s1: acquiring a GIS system single line diagram, identifying protection equipment and generating a protection configuration simplified diagram in real time;
s2: converting the image into characters by means of image-text recognition technology, outputting structured data, and storing the structured data in a database;
s3: setting the structured data to a principle level to calculate and generate a constant value, and particularly generating the constant value by one key of the topological relation identified by the GIS map; then, device-level programming of a fixed-value single template is carried out, and principle-level data are automatically read after the template programming is completed;
s4: calculating and judging the fixed value position where the fixed value is improperly matched and matched with the out-of-order limit problem through intelligent association drawings and topology technology, intelligently finding out the abnormal fixed value and pushing messages, realizing accident reproduction, and giving out modification comments;
in the step S2, the graphic recognition technology is specifically used to report the parameters of the equipment in various formats, such as the distribution network OCS, the graphic model system data interface and the equipment parameters, so as to obtain the equipment parameters, the distribution network single line diagram and the real-time data, and provide basic data support for subsequent calculation;
in the step S3, a standardized expert intelligent configuration rule base is built by a digital visualization method to realize visual interactive configuration of a setting principle formula, so that various principle level computing requirements are met, a standardized value setting single template is formulated, and a basic template is provided for quick programming of various equipment model value setting single templates.
2. The topology-based power distribution network protection rapid setting and checking method according to claim 1, wherein the method comprises the following steps: in the step S4, accident reproduction is specifically implemented based on the network topology method and dynamic data, and the accident is intelligently analyzed to provide an auxiliary decision.
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| CN114971938A (en) * | 2022-06-07 | 2022-08-30 | 上海山源电子科技股份有限公司 | Method and device for detecting override-proof network topology of coal mine power supply system and storage medium |
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| CN104240045A (en) * | 2014-10-14 | 2014-12-24 | 国家电网公司 | Method for analyzing coordination and safety of protective relaying of regional power grid |
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| CN110231530A (en) * | 2019-07-08 | 2019-09-13 | 国网天津市电力公司 | A kind of relay protection automatic Verification method |
| CN110601158B (en) * | 2019-10-11 | 2021-10-29 | 国网福建省电力有限公司 | Method for online setting of distribution automation protection constant value |
| CN111884181A (en) * | 2020-07-16 | 2020-11-03 | 广东电网有限责任公司 | Method for configuring simplified diagram through fixed value setting |
| CN111985500B (en) * | 2020-07-28 | 2024-03-29 | 国网山东省电力公司禹城市供电公司 | Verification method, system and device for relay protection fixed value input |
| CN112736866B (en) * | 2020-12-16 | 2023-08-22 | 国网安徽省电力有限公司 | Relay protection self-adaptive real-time evaluation method and system based on wide area information |
| CN113644637B (en) * | 2021-10-18 | 2022-02-15 | 广东电网有限责任公司佛山供电局 | Self-adaptive setting method of automatic switch and related device |
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