CN113608480A - Fixed value checking method of extra-high voltage direct current protection device - Google Patents
Fixed value checking method of extra-high voltage direct current protection device Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 claims description 10
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- 238000012986 modification Methods 0.000 abstract description 3
- 238000004891 communication Methods 0.000 description 12
- 230000009466 transformation Effects 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00028—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment involving the use of Internet protocols
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24024—Safety, surveillance
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- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a fixed value checking method of an extra-high voltage direct current protection device, which comprises the following steps: formulating a communication program suitable for each protection device; acquiring a latest fixed value list of the protection device based on a corresponding communication program; acquiring an official fixed value list of a corresponding protection device issued by an official; analyzing the latest fixed value list and the official fixed value list format, and extracting a group name description item, an item name description item and a corresponding fixed value item; comparing the fixed values of all groups of name description items and item names in the latest fixed value list and the official fixed value list; displaying the comparison result and displaying the comparison difference in different display modes. By analyzing each latest fixed value list and extracting each item and corresponding fixed value, the comparison between the official fixed value and the real-time fixed value of the protection device is realized, the comparison difference is presented in different display modes, the consideration and the check are convenient, the manpower is reduced, the manual operation error setting and the error modification are avoided, and the stability and the safety of the power system are improved.
Description
Technical Field
The invention relates to the technical field of secondary equipment fixed value checking, in particular to a fixed value checking method of an extra-high voltage direct current protection device.
Background
The secondary equipment of the converter station comprises ultrahigh voltage protection equipment, valve control equipment, valve cooling equipment and the like, the secondary equipment of the converter station needs periodic checking, the existing ultrahigh voltage protection equipment checking is mainly performed one-to-one checking by manually carrying paper fixed value sheets to manually checking each fixed value of the protection equipment on site, checking efficiency is low, and manual operation has wrong setting and modification and influences the stability and safety of a power system.
Disclosure of Invention
The present invention provides a method for checking a fixed value of an ultra-high voltage dc protection device to solve the above technical problems.
The invention is realized by the following technical scheme:
the constant value checking method of the extra-high voltage direct current protection device comprises the following steps:
A. formulating a communication program suitable for each protection device;
B. acquiring a latest fixed value list of the protection device based on a corresponding communication program;
C. acquiring an official fixed value list of a corresponding protection device issued by an official;
D. analyzing the latest fixed value list and the official fixed value list format, and extracting a group name description item, an item name description item and a corresponding fixed value item;
E. comparing the fixed values of all groups of name description items and item names in the latest fixed value list and the official fixed value list;
F. displaying the comparison result and displaying the comparison difference in different display modes.
When the timing check of the ultrahigh voltage protection equipment is carried out, a plurality of types of electronic fixed value single formats including xml, xls, pdf and the like need to be analyzed, comparison between an official fixed value and a real-time fixed value of a protection device is realized through analysis of each latest fixed value single and extraction of each item and a corresponding fixed value, comparison differences are presented in different display modes, the consideration and the check are facilitated, manpower is reduced, manual operation missetting and mismodification are avoided, and the stability and the safety of a power system are improved.
Preferably, in order to form a traceable fixed-value list, the method further comprises formulating a standard fixed-value list of each protection device, wherein the standard fixed-value list comprises a group name description item, an item name description item and a corresponding fixed-value item;
and after the group name description item, the item name description item and the corresponding definite value item are extracted, filling the extracted definite value into the corresponding group name description item and the corresponding definite value item of the item name item and storing the definite value item.
Preferably, an official fixed value list of the corresponding protection device issued by an official is obtained by adopting a remote downloading method passing through a firewall.
Preferably, the method for acquiring the latest fixed value list of the protection device comprises the following steps:
reading and analyzing a secondary side constant value list of the protection equipment from a production management area;
transmitting the secondary side constant value list to a production control large area and storing the secondary side constant value list;
and performing parameter matching on the secondary side constant value list and the primary side constant value list in a production control large area to obtain a latest constant value list.
Preferably, when the latest definite value list and the official definite value list are PDF or pictures, the method for extracting the group name description items, the item name description items and the corresponding definite value items in the latest definite value list and the official definite value list comprises the following steps:
identifying characters and positions thereof in the image;
scanning and collecting all pixel values and position information except characters in the image, and determining the position information of a table frame line according to the intersection point position information of the table;
and judging the corresponding relation of the group name description item, the item name description item and the fixed value item in the image according to the position information, the characters and the position information of the table frame line.
Preferably, when the latest fixed value list and the official fixed value list are in an XML format, a line-by-line reading mode is adopted;
when the latest fixed value list and the official fixed value list are in an Excel format, a reading mode according to cells is adopted;
and when the latest fixed value list and the official fixed value list are in a Word format, reading according to lines or reading according to paragraphs is adopted.
Preferably, the method further comprises a rating checking step after analyzing the format of the latest rating form and the official rating form, wherein the rating checking step comprises the following steps:
encrypting the extracted content by adopting an SM4 algorithm and transmitting the encrypted content to a check terminal which passes the MAC identity authentication;
and receiving and decrypting and storing the encrypted data of the check terminal after the check of the check terminal is finished.
Compared with the prior art, the invention has the following advantages and beneficial effects:
according to the invention, by acquiring the latest fixed value list of the ultrahigh voltage protection equipment, and analyzing the latest fixed value list, extracting parameters and corresponding fixed values, comparison between the official fixed value and the real-time fixed value of the protection device is realized, comparison differences are presented in different display modes, so that the comparison is convenient to consider and check, the manpower is reduced, the manual operation error setting and correction is avoided, and the stability and the safety of the power system are improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention.
FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the invention. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.
It should be understood that, for the term "and/or" as may appear herein, it is merely an associative relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, B exists alone, and A and B exist at the same time; for the term "/and" as may appear herein, which describes another associative object relationship, it means that two relationships may exist, e.g., a/and B, may mean: a exists independently, and A and B exist independently; in addition, for the character "/" that may appear herein, it generally means that the former and latter associated objects are in an "or" relationship.
It will be understood that when an element is referred to herein as being "connected," "connected," or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. Conversely, if a unit is referred to herein as being "directly connected" or "directly coupled" to another unit, it is intended that no intervening units are present. In addition, other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between … …" versus "directly between … …", "adjacent" versus "directly adjacent", etc.).
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.
It should also be noted that, in some alternative designs, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed substantially concurrently, or the figures may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
It should be understood that specific details are provided in the following description to facilitate a thorough understanding of example embodiments. However, it will be understood by those of ordinary skill in the art that the example embodiments may be practiced without these specific details. For example, systems may be shown in block diagrams in order not to obscure the examples in unnecessary detail. In other instances, well-known processes, structures and techniques may be shown without unnecessary detail in order to avoid obscuring example embodiments.
Example 1
The method for checking the fixed value of the extra-high voltage direct current protection device shown in fig. 1 comprises the following steps:
A. formulating a communication program suitable for each protection device so as to obtain a latest fixed value list of each protection device;
B. acquiring a latest fixed value list of the protection equipment based on a corresponding communication program, wherein the protection equipment is different in possibly different communication protocols, and the matching of the communication protocols is realized by selecting different communication modes to realize the acquisition of the fixed value list;
C. acquiring an official fixed value list of a corresponding protection device issued by an official;
D. analyzing the latest fixed value list and the official fixed value list format, and extracting a group name description item, an item name description item and a corresponding fixed value item;
E. comparing the fixed values of the name description items and the item names of each group in the latest fixed value list and the official fixed value list, wherein the numerical value in the latest fixed value list is used as a comparison value, and the numerical value in the official fixed value list is used as a reference value;
F. displaying the comparison result and displaying the comparison difference in different display modes.
Example 2
Based on the principle of the foregoing embodiment, this embodiment discloses a specific implementation manner, taking the fixed value of the converter station protection and control device issued by the national dispatching center or the national grid south network dispatching center as an example.
Communication programs suitable for the protection devices are prepared, and the communication programs support communication protocols such as IEC104, IEC103, profibus, modbus and the like.
And acquiring a latest fixed value list of the protection equipment according to a communication program corresponding to the communication protocol type of the protection equipment. If the protection equipment supports the IEC104 communication protocol, selecting a communication program supporting the IEC104 communication protocol to perform signal connection with the protection equipment so as to obtain a latest fixed value list of the protection device; if the protection equipment supports a profibus communication protocol, selecting a communication program supporting the profibus communication protocol to perform signal connection with the protection equipment so as to obtain a latest fixed value list of the protection device; and so on.
After a communication link is established with the protection device, a latest fixed value list of the protection device is obtained, specifically, the obtaining method is as follows:
if the secondary side fixed value list is located in the production management area, reading and analyzing the secondary side fixed value list of the protection equipment from the production management area;
then, transmitting the secondary side constant value list to a production control large area and storing the secondary side constant value list;
and performing parameter matching on the secondary side fixed value list and the primary side fixed value list to obtain a latest fixed value list, wherein the latest fixed value list is generated in a large production control area. The latest definite value list may be a file in PDF, EXCEL, WORD, xls, XML, etc.
The fixed value of the converter station control and protection equipment issued by the national dispatching center or the national network south network dispatching center is generally issued in an official website manner, an official website of the national dispatching center or the national network south network dispatching center is accessed, and an official fixed value list of a corresponding protection device issued by an official is downloaded to the local by adopting a remote downloading method passing through a firewall, wherein the official fixed value list can be a file in a format of PDF, EXCEL, WORD, xls, XML and the like.
The latest fixed value list and the official fixed value list may be in the same format or different formats, and the latest fixed value list and the official fixed value list are analyzed, and files in different formats are analyzed in different manners to extract the group name description items, the item name description items and the corresponding fixed value items in the fixed value list.
When the latest fixed value list and the official fixed value list are PDFs or pictures, the extraction methods of the group name description items, the item name description items and the corresponding fixed value items in the latest fixed value list and the official fixed value list are as follows:
identifying characters and positions thereof in the image;
scanning and collecting all pixel values and position information except characters in the image, and determining the position information of a table frame line according to the intersection point position information of the table;
and judging the corresponding relation of the group name description item, the item name description item and the fixed value item in the image according to the position information, the characters and the position information of the table frame line.
When the latest fixed value list and the official fixed value list are in an XML format, the text is read according to lines in a line-by-line reading mode, and the character strings are segmented according to spaces.
And when the latest fixed value list and the official fixed value list are in an Excel format, reading according to the cells.
When the latest fixed value list and the official fixed value list are in Word format, a mode of reading by line or reading by paragraph is adopted.
Analyzing the format of the latest fixed value list and the official fixed value list, and then further performing fixed value check, wherein the fixed value check comprises the following steps:
encrypting the extracted content by adopting an SM4 algorithm and transmitting the encrypted content to a check terminal which passes the MAC identity authentication; and after the verification of the verification terminal is finished, receiving and decrypting and storing the encrypted data of the verification terminal. The SM4 algorithm is a packet algorithm with a packet length of 128 bits and a key length of 128 bits. Both the encryption algorithm and the key expansion algorithm adopt 32-round nonlinear iteration structures. The decryption algorithm has the same structure as the encryption algorithm, but the use sequence of the round keys is opposite, and the decryption round keys are the reverse sequence of the encryption round keys. The algorithm adopts a nonlinear iteration structure, each iteration is given by a round function, wherein the round function is formed by compounding a nonlinear transformation and a linear transformation, and the nonlinear transformation is given by an S box. By adopting the encryption algorithm, the data security can be improved.
In order to facilitate checking and unified management of fixed value proofreading, information extracted from the latest fixed value list and the official fixed value list can be filled in the standard fixed value list and stored, the standard fixed value list is well customized in advance and comprises a group name description item, an item name description item and a corresponding fixed value item, and the fixed value item comprises an actual value item and a check value item. A plurality of group name description items may be included under a group name description item in the table, the group name description item corresponds to a certain value item, which group name description items are identified in the image, and which subordinate group name description items are key items, so that a certain value correction error is avoided.
And comparing the fixed values of the name description items and the item names of each group in the latest fixed value list and the official fixed value list.
And displaying the comparison result, displaying the comparison difference in different display modes, and displaying the latest fixed value list and the official fixed value list in different colors, wherein the fixed values in the latest fixed value list and the official fixed value list are the same.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. The constant value checking method of the extra-high voltage direct current protection device is characterized by comprising the following steps of:
A. formulating a communication program suitable for each protection device;
B. acquiring a latest fixed value list of the protection device based on a corresponding communication program;
C. acquiring an official fixed value list of a corresponding protection device issued by an official;
D. analyzing the latest fixed value list and the official fixed value list format, and extracting a group name description item, an item name description item and a corresponding fixed value item;
E. comparing the rating items corresponding to the group names and the item names in the latest rating list and the official rating list;
F. displaying the comparison result and displaying the comparison difference in different display modes.
2. The method for checking the fixed value of the extra-high voltage direct current protection device according to claim 1, further comprising formulating a standard fixed value sheet for each protection device, wherein the standard fixed value sheet comprises a group name description item, an item name description item and a corresponding fixed value item;
and after the group name description item, the item name description item and the corresponding definite value item are extracted, filling the extracted definite value into the corresponding group name description item and the corresponding definite value item of the item name item and storing the definite value item.
3. The method for checking the fixed value of an extra-high voltage direct current protection device according to claim 1, wherein a remote downloading method through a firewall is adopted to obtain an official fixed value list of a corresponding protection device issued by an official.
4. The method for checking the fixed value of the extra-high voltage direct current protection device according to claim 1, wherein the latest fixed value list of the protection device is obtained by:
reading and analyzing a secondary side constant value list of the protection equipment from a production management area;
transmitting the secondary side constant value list to a production control large area and storing the secondary side constant value list;
and performing parameter matching on the secondary side constant value list and the primary side constant value list in a production control large area to obtain a latest constant value list.
5. The method for checking the rating of the extra-high voltage direct current protection device according to claim 1, wherein when the latest rating form and the official rating form are PDF or pictures, the method for extracting the group name description items, the item name description items and the corresponding rating items in the latest rating form and the official rating form comprises:
identifying characters and positions thereof in the image;
scanning and collecting all pixel values and position information except characters in the image, and determining the position information of a table frame line according to the intersection point position information of the table;
and judging the corresponding relation of the group name description item, the item name description item and the fixed value item in the image according to the position information, the characters and the position information of the table frame line.
6. The method for checking the fixed value of the extra-high voltage direct current protection device according to claim 1, wherein when the latest fixed value list and the official fixed value list are in XML format, a line-by-line reading mode is adopted;
when the latest fixed value list and the official fixed value list are in an Excel format, a reading mode according to cells is adopted;
and when the latest fixed value list and the official fixed value list are in a Word format, reading according to lines or reading according to paragraphs is adopted.
7. The method for checking the fixed value of an extra-high voltage direct current protection device according to claim 1, wherein the method further comprises a step of checking the fixed value after analyzing the format of the latest fixed value list and the official fixed value list, and the step of checking the fixed value comprises the steps of:
encrypting the extracted content by adopting an SM4 algorithm and transmitting the encrypted content to a check terminal which passes the MAC identity authentication;
and receiving and decrypting and storing the encrypted data of the check terminal after the check of the check terminal is finished.
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