CN111198974B - Panoramic model file-based visualization method for AC sampling cable information of in-situ protection equipment - Google Patents
Panoramic model file-based visualization method for AC sampling cable information of in-situ protection equipment Download PDFInfo
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Abstract
The invention relates to a panoramic model file-based visualization method for alternating current sampling cable information of in-place protection equipment, which overcomes the defect that the traditional cable query method cannot meet the actual use requirement compared with the prior art. The invention comprises the following steps: modeling an AC sampling cable loop of the in-situ protection equipment; acquiring on-site marked alternating current sampling cable loop information; generating two-dimensional code label information; marking of the cable position. The intelligent substation on-site protection secondary loop cable is controlled in all directions, visualization of alternating current sampling cable information is achieved through cable-oriented physical loop modeling and a cable marking search algorithm, and the sampling source series connection nodes are clear and easy to position and understand.
Description
Technical Field
The invention relates to the technical field of power system Internet of things, in particular to a panoramic model file-based visualization method for alternating current sampling cable information of in-situ protection equipment.
Background
The current intelligent substation generally has the following problems: the relay protection reliability is not high, and the optical fiber and the switch equipment have the problem of transmission delay, so that the protection trip delay is caused, and the quick-acting performance of the optical fiber and the switch equipment is not good; the intelligent substation comprises various advanced technologies, new concepts and technologies are continuously proposed and innovated, so that the relay protection operation and maintenance are complex, the technical threshold is too high, and great pressure is caused to operation and maintenance personnel; the construction period of the transformer substation is long, the occupied land resources are large, and a lot of resources and expenses can be saved through a local mode; the primary and secondary devices are dispersed, and the technical integration is difficult to realize.
In order to solve the problems, numerous relay protection experts propose a concept of researching and developing a high-reliability on-site miniaturized relay protection device, and the concept is popularized and applied to a certain range. Through simplifying the secondary circuit in order to improve the protection reliability, cancellation merging cells and intelligent terminal are in order to improve protection action speed, and its key feature is the integrated height of integrated circuit board, and compact structure is reasonable, adopts standardized interface connector, can satisfy complicated electromagnetic environment and various bad weather to can carry out non-protection outdoor installation. However, the operation and maintenance of the engineering site are complicated because of the high integration of the in-situ protection technology and no problems of a liquid crystal screen and the like.
In addition, the secondary circuit of the intelligent substation on-site protection equipment is sampled by a conventional cable loop, and compared with the traditional cable sampling substation, the secondary circuit cable of the on-site protection equipment is sampled, and more terminal row nodes are arranged, for example, the 500kV circuit breaker on-site protection equipment: according to the standardized design specifications of Q/GDW 1175-2013 transformers, high-voltage shunt reactors and bus protection and auxiliary devices, the circuit breaker on-site protection equipment is required to meet the requirement of dual configuration, but the current alternating current sampling data source shares the same group of CT windings.
The traditional method for inquiring service data by checking cables is not suitable for the existing debugging method, and how to develop a new method for remarkably improving the field working efficiency, reducing the operation and maintenance burden, reducing the working difficulty, ensuring the correctness and the safety of operation and maintenance, and further promoting the development of on-site relay protection.
Disclosure of Invention
The invention aims to solve the defect that the traditional cable query method in the prior art cannot meet the actual use requirement, and provides a panoramic model file-based visualization method for the communication sampling cable information of the in-situ protection equipment to solve the problems.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a panoramic model file-based visualization method for AC sampling cable information of in-place protection equipment comprises the following steps:
modeling an AC sampling cable loop of the in-situ protection equipment: according to the method for modeling the optical fiber loop, modeling is carried out on an AC sampling cable loop of the in-situ protection equipment in a mode of a screen cabinet, equipment, an AC board and an AC terminal, wherein the AC board is equal to an optical port board of the optical fiber loop, and the AC terminal is equal to an optical port on a board card of the optical fiber loop;
acquiring alternating current sampling cable loop information of a field mark;
generating two-dimensional code label information: based on the SPCD file which is subjected to the AC sampling cable loop marking processing, corresponding data and a two-dimensional code label corresponding to the AC sampling cable are generated through panoramic model software, and the entry information coding format of the two-dimensional code label is as follows: 5013DL-101@ R01.78P.5013CB-31LH, wherein 5013DL-101 represents a cable number, R01 represents a transformer substation area, 78P represents a screen cabinet number, and 5013CB-31LH represents a sampling data source of a circuit breaker interval current transformer;
marking of cable position: and acquiring alternating current sampling cable loop information acquired by scanning the two-dimensional code label by the client, analyzing and searching for positioning by a cable unmarked method or a cable marked method, and performing visual display.
The modeling of the in-situ protection equipment alternating current sampling cable loop comprises the following steps:
newly building a cable, and adding a cable number;
selecting the number of the cable cores;
selecting a starting point device terminal strip;
creating cable connection;
selecting a terminal row of opposite side equipment;
selecting a sampling source series terminal row;
and finishing the connection storage of the physical loop and generating an SPCD physical loop database.
The cable label-free method for analyzing, searching and positioning comprises the following steps:
the cable loop comprises objects on two sides, one side is marked as side A and used as a starting point for searching, and when the side A is a mutual inductor, the cable loop on the side B is searched section by section;
on the searching path, judging whether the next-stage object is a terminal row, if so, continuing to search whether the next-stage object is a device, and if not, returning to search the cable loop on the side B section by section;
if B is the device, continue searching for whether the next level object is a terminal strip; if the terminal row is the terminal row, continuously searching whether the next stage is short-circuited or not; finally, the B-side device is searched circularly, and the connection mode of the cable is single-stage connection.
The cable marking method for analyzing, searching and positioning comprises the following steps:
the cable loop comprises objects on two sides, one side is marked as an A side and used as a starting point for searching, and when the A side is a terminal mutual inductor, the cable loop on the B side is searched section by section;
if the side B is a terminal block, entering a cable mark cyclic search algorithm, and if not, returning;
and (3) cable marking cyclic algorithm:
judging whether sampling sources are connected in series or not in the lower-level search, if the sampling sources are not connected in series, marking that the equipment type is wrong and the cable connection is not smooth or wrong, wherein the mutual inductor cannot form a complete loop to the terminal block;
if sampling sources are connected in series, judging the current terminal block based on the terminal block port topology and the IED design relationship topology: extracting the topological intersection of the port of the current terminal row and the topological intersection of the design relationship of the A-side mutual inductor to obtain a B-side device, wherein the searching process is finished;
and for two or more multi-stage serial sampling sources, continuously searching the next-stage terminal row, performing recursive circular search again, continuously searching the next-stage sampling source serial terminal row until the next-stage terminal row is short-circuited, finally ending cable sampling source search, obtaining a B-side device, and ending the search process.
Advantageous effects
Compared with the prior art, the method for visualizing the information of the alternating current sampling cable of the on-site protection equipment based on the panoramic model file comprehensively controls the on-site protection secondary circuit cable of the intelligent substation, realizes visualization of the information of the alternating current sampling cable by modeling the physical circuit facing the cable and adopting a cable mark search algorithm, ensures that the serial connection node of the sampling source is clear, and is easy to position and understand. Meanwhile, for maintenance work scenes such as on-site protection equipment verification, technical improvement and defect elimination, the visual display of the information of the alternating-current sampling cable can more visually display the relationship of the alternating-current sampling loop, and the working efficiency of operating personnel is effectively improved.
Drawings
FIG. 1 is a sequence diagram of the method of the present invention.
Detailed Description
For a better understanding and appreciation of the structural features and advantages achieved by the present invention, reference will be made to the following detailed description of preferred embodiments thereof, in conjunction with the accompanying drawings, in which:
the in-situ protection design is characterized in that: the cable is directly mined and jumped close to primary equipment on site, so that the length of the cable and intermediate links are reduced, the influences of loop interference, partial capacitance discharge and the like caused by a long cable are avoided, and the speed and reliability of relay protection are improved; secondly, miniaturized and in-situ equipment is adopted, and small protection chambers, the number of screen cabinets and cables and optical cables are eliminated; thirdly, the interface is in standardized design, a standard aviation plug is adopted, a secondary circuit is simplified, devices of different manufacturers can be exchanged, and the interface adopts the anti-error design of different color bands and fault-tolerant key positions; fourthly, realizing factory debugging and replacement type maintenance of the protection device; fifthly, the system has high protection level and anti-interference capability.
The in-situ protection design concept is as follows: the method has the advantages that standardized interfaces and data acquisition are applied, the technical concept of plug and play is highlighted, wrong wiring is prevented, the whole-network sharing scheme of panoramic visualization of equipment states and running data is established, and advanced concepts such as remote inspection, centralized backup management and the like are realized.
Aiming at the design characteristics and design concept of on-site protection, the cable marker (information visualization) needs to highlight the advantages and the design concept, for example, the length of a cable loop is reduced in a sampling source serial connection mode, the complexity of the cable loop is increased, an anti-misoperation function can be realized through panoramic visualization of the equipment state, and misoperation caused by the fact that the cable marker is unclear on site is prevented.
As shown in fig. 1, the method for visualizing information of an alternating current sampling cable of a localized protection device based on a panoramic model file of the present invention comprises the following steps:
firstly, modeling is carried out on an alternating current sampling cable loop of the on-site chemical protection equipment. According to the method for modeling by referring to the optical fiber loop, the AC sampling cable loop of the on-site protection equipment is modeled in a mode of a screen cabinet, equipment, an AC board and an AC terminal, wherein the AC board is equal to an optical port board of the optical fiber loop, and the AC terminal is equal to an optical port on a board card of the optical fiber loop, so that the normalization of the SPCD overall format is guaranteed.
The conventional intelligent station physical modeling file mainly comprises information models of a secondary system physical position, a device model, device configuration and a screen combination scheme. The physical modeling file of the on-site substation is not so complicated, the protection device is close to primary equipment (a mutual inductor) outdoors, the composition of the protection device embodies on-site and simplification, a cabinet is omitted in a small chamber, and the cable distance is shortened. The conventional intelligent station physical loop connection is mainly used for constructing a transformer substation secondary system loop principle, is a core part of transformer substation secondary system connection and comprises a port connection relation between devices and switches. And the physical loop of the on-site substation mainly comprises an aerial plug cable and a terminal strip. The method comprises the following specific steps:
(1) Newly building a cable, and adding a cable number;
(2) Selecting the number of the cable cores;
(3) Selecting a starting point device terminal row;
(4) Creating a cable connection;
(5) Selecting a terminal row of opposite-side equipment;
(6) Selecting a sampling source series terminal row;
(7) And finishing the connection storage of the physical loop and generating an SPCD physical loop database.
And secondly, acquiring the loop information of the alternating current sampling cable marked on the site. Because the current secondary circuit passes through different screen cabinets to generate multiple purposes and is connected in series for multiple times under the same current winding, the situation that a group of CT windings are shared on site exists, and a common transformer sampling source is marked to be the same winding of the same transformer. The AC sampling cable loop information of the on-site mark is mainly printed, labeled and pasted by a marked device through a PC section, and finally data display is carried out at a mobile operation and maintenance end through the method.
Thirdly, generating two-dimensional code label information: based on the SPCD file which is subjected to the circuit marking processing of the alternating current sampling cable, generating corresponding data and a two-dimensional code label corresponding to the alternating current sampling cable through panoramic model software, wherein the entry information coding format of the two-dimensional code label is as follows:
5013DL-101@ R01.78P.5013CB-31LH, wherein 5013DL-101 represents a cable number, R01 represents a transformer substation area, 78P represents a screen cabinet number, and 5013CB-31LH represents a sampling data source of a circuit breaker interval current transformer.
Fourthly, marking the position of the cable: the method comprises the steps of obtaining alternating current sampling cable loop information collected by a client scanning two-dimensional code label, analyzing and searching for positioning by a cable unmarked method or a cable marked method, and performing visual display.
The cable unmarked method for analyzing, searching and positioning comprises the following steps:
(1) The cable loop comprises objects on two sides, one side is marked as an A side and used as a starting point for searching, and when the A side is a mutual inductor, the cable loop on the B side is searched section by section;
(2) On the searching path, judging whether the next-stage object is a terminal row, if so, continuing to search whether the next-stage object is a device, and if not, returning to search the cable loop on the side B section by section;
if B is the device, continuing to search whether the next-level object is a terminal block; if the terminal row is the terminal row, continuously searching whether the next stage is short-circuited or not; finally, the B-side device is searched circularly, and the connection mode of the cable is single-stage connection.
The method for analyzing, searching and positioning the cable with the mark comprises the following steps:
(1) The cable loop comprises objects on two sides, one side is marked as side A and used as a starting point for searching, and when the side A is a terminal mutual inductor, the cable loop on the side B is searched section by section;
(2) If the side B is a terminal row, entering a cable marking cyclic search algorithm, and if not, returning;
(3) And (3) cable marking cyclic algorithm:
judging whether sampling sources are connected in series or not in the lower-level search, if the sampling sources are not connected in series, marking that the equipment type is wrong and the cable connection is not smooth or wrong, wherein a complete loop cannot be formed from the mutual inductor to the terminal strip;
if sampling sources are connected in series, judging the current terminal block based on the terminal block port topology and the IED design relationship topology: extracting the topological intersection of the port of the current terminal row and the topological intersection of the design relationship of the A-side mutual inductor to obtain a B-side device, wherein the searching process is finished;
(4) And for more than two multi-stage serial sampling sources, continuously searching the next-stage terminal row, performing recursive circular search again, continuously searching the next-stage sampling source serial terminal row until the next-stage terminal row is short-circuited, finally finishing cable sampling source search, obtaining a B-side device, and finishing the search process.
In practical application, an operator creates a cable connection diagram according to a cable design blueprint provided by a design institute; the method comprises the steps that a common CT winding is marked on site, and a common transformer sampling source is marked to be the same winding of the same transformer; generating an SPCD file containing the marked information cable connection relation according to the total station model and the cable connection diagram; the implementation personnel lead the prepared panoramic model files (SPCD files and SCD files generate panoramic model files through software) into the operation and maintenance terminal equipment, and the APP software is used for panoramic display; the secondary equipment operation and maintenance personnel hold the operation and maintenance terminal equipment to scan the intelligent label two-dimensional code; the panorama show APP uses the intelligent label two-dimensional code as an inlet, and according to the mark information relation in the SPCD file, the topology search of the cable connection path is expanded, the topology search of the cable connection is expanded, and the multi-stage sampling same-source series connection relation is realized.
The foregoing shows and describes the general principles, essential 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 embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A panoramic model file-based visualization method for AC sampling cable information of in-place protection equipment is characterized by comprising the following steps:
11 Modeling an in-place protection device ac sampling cable loop: according to the method for modeling the optical fiber loop, modeling is carried out on an AC sampling cable loop of the in-situ protection equipment in a mode of a screen cabinet, equipment, an AC board and an AC terminal, wherein the AC board is equal to an optical port board of the optical fiber loop, and the AC terminal is equal to an optical port on a board card of the optical fiber loop;
12 Obtaining AC sampling cable loop information of the site mark;
13 Generate two-dimensional code tag information: based on the SPCD file which is subjected to the AC sampling cable loop marking processing, corresponding data and a two-dimensional code label corresponding to the AC sampling cable are generated through panoramic model software, and the entry information coding format of the two-dimensional code label is as follows: 5013DL-101@ R01.78P.5013CB-31LH, wherein 5013DL-101 represents a cable number, R01 represents a transformer substation area, 78P represents a screen cabinet number, and 5013CB-31LH represents a sampling data source of a circuit breaker interval current transformer;
14 Marking of cable position: and acquiring alternating current sampling cable loop information acquired by scanning the two-dimensional code label by the client, analyzing and searching for positioning by a cable unmarked method or a cable marked method, and performing visual display.
2. The panoramic model file-based visualization method for the AC sampling cable of the in-place protection device, according to claim 1, wherein the modeling for the AC sampling cable loop of the in-place protection device comprises the following steps:
21 Newly building a cable, and adding a cable number;
22 Selecting the number of cores of the cable;
23 Select a starting device terminal row;
24 Create a cable connection;
25 Select the opposite side device terminal block;
26 Select a sampling source series terminal bank;
27 Complete the physical loop connection save and generate the SPCD physical loop database.
3. The panoramic model file-based visualization method for the AC sampling cable information of the in-place protection equipment, according to claim 1, wherein the cable label-free method for analyzing and searching out the location comprises the following steps:
31 The cable loop comprises objects at two sides, one side is marked as side A and used as a starting point for searching, and when the side A is a mutual inductor, the cable loop at the side B is searched section by section;
32 Judging whether the next-stage object is a terminal block or not on the searching path, if so, continuing to search whether the next-stage object is a device or not, and if not, returning to search the cable loop on the side B section by section;
if B is the device, continuing to search whether the next-level object is a terminal block; if the terminal row is the terminal row, continuously searching whether the next stage is short-circuited; finally, the B-side device is searched circularly, and the connection mode of the cable is single-stage connection.
4. The panoramic model file-based visualization method for the AC sampling cable information of the in-place protection equipment, according to claim 1, wherein the cable marking method for analyzing, searching and locating comprises the following steps:
41 The cable loop comprises objects at two sides, one side is marked as side A and used as a starting point for searching, and when the side A is a terminal mutual inductor, the cable loop at the side B is searched section by section;
42 If the side B is a terminal block, entering a cable marking cyclic search algorithm, and if not, returning;
43 Cable marking loop algorithm:
judging whether sampling sources are connected in series or not in the lower-level search, if the sampling sources are not connected in series, marking that the equipment type is wrong and the cable connection is not smooth or wrong, wherein a complete loop cannot be formed from the mutual inductor to the terminal strip;
if sampling sources are connected in series, judging the current terminal block based on the terminal block port topology and the IED design relationship topology: extracting the intersection of the port topology of the current terminal row and the design relationship topology of the transformer at the side A to obtain a device at the side B, wherein the searching process is finished;
44 For two or more multi-stage serial sampling sources, the next-stage terminal row is continuously searched, recursive cyclic search is performed again, the next-stage sampling source serial terminal row is continuously searched until the next-stage terminal row is short-circuited, cable sampling source search is finally finished, a B-side device is obtained, and the search process is finished.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105931132A (en) * | 2016-04-20 | 2016-09-07 | 中国能源建设集团江苏省电力设计院有限公司 | Intelligent substation secondary system physical circuit file complete path analysis method |
| CN106919973A (en) * | 2017-01-23 | 2017-07-04 | 国网江苏省电力公司技能培训中心 | Intelligent label generation and format conversion method based on panorama model file |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105931132A (en) * | 2016-04-20 | 2016-09-07 | 中国能源建设集团江苏省电力设计院有限公司 | Intelligent substation secondary system physical circuit file complete path analysis method |
| CN106919973A (en) * | 2017-01-23 | 2017-07-04 | 国网江苏省电力公司技能培训中心 | Intelligent label generation and format conversion method based on panorama model file |
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