CN111934274A - Intelligent substation protection constant value intelligent downloading method - Google Patents

Abstract

The invention discloses an intelligent downloading method for protection constant values of an intelligent substation, which comprises the following steps that S1 is accessed into a substation control layer network of the substation, is directly connected with a protection device, remotely obtains a protection constant value single file in a main station, and utilizes a protection constant value single intelligent analysis unit to intelligently analyze the protection constant value single file; s2, importing the SCD file of the intelligent substation into an SCD automatic modeling unit, reading the information in the SCD file and storing the information in a background database to complete automatic modeling of the intelligent substation; and S3, the fixed value downloading combination unit pairs the protection fixed value single file information in the background database with the corresponding protection device model in the intelligent substation by using the protection fixed value intelligent matching unit, establishes interaction with the protection device through the station control layer MMS message engine, and downloads the fixed value in the protection fixed value single file to the protection device by one key. The invention realizes the intelligent one-key type downloading of the protection constant value, saves the labor cost, avoids the potential safety hazard of manual input and ensures the quick and direct downloading of the protection constant value.

Description

Intelligent substation protection constant value intelligent downloading method

Technical Field

The invention relates to the technical field, in particular to an intelligent downloading method for a protection fixed value of an intelligent substation.

Background

At present, each power grid company establishes a special protection system, namely an information protection substation, aiming at secondary equipment, the information protection substation is deployed in a substation, a main station end establishes an information protection main station system, and each substation information protection substation system transmits protection information of the substation to the information protection main station through a second safety area of a scheduling data network. Meanwhile, a part of regions use the information protection master station to remotely control the information protection sub-station to download the protection constant value.

Based on the present situation, the following problems still exist:

1. secondary equipment modeling depends on manual configuration, and an automatic means is lacked;

2. the protection of the fixed value installation depends on manual work, so that errors are easy to occur, and time and labor are wasted; even if remote fixed value downloading is scheduled, the remote downloading depends on the fact that a third-party system forwards the remote fixed value to a transformer substation and secondary downloading is carried out on equipment in the transformer substation, whether field information configuration is correct or not cannot be determined, and major hidden dangers are caused once downloading is wrong;

3. and a task management and control mechanism is lacked, and the protection constant value downloading does not form a complete integrated means of the whole process of task generation, task issuing, task execution, task feedback, task management and the like.

Disclosure of Invention

The invention aims to provide an intelligent downloading method for a protection fixed value of an intelligent substation, which is designed aiming at the intelligent downloading method for the protection fixed value of the intelligent substation, realizes the intelligent one-key downloading of the protection fixed value, saves the labor cost, avoids the potential safety hazard of manual input, and ensures the quick, correct and direct downloading of the protection fixed value.

The embodiment of the invention is realized by the following technical scheme:

an intelligent downloading method for protection fixed values of an intelligent substation comprises the following steps,

s1, accessing a substation control layer network of the transformer substation, directly connecting a protection device, remotely obtaining a protection constant value single file in a main station, and intelligently analyzing the protection constant value single file by using a protection constant value single intelligent analysis unit;

s2, importing the SCD file of the intelligent substation into an SCD automatic modeling unit, reading the information in the SCD file and storing the information in a background database to complete automatic modeling of the intelligent substation;

and S3, the fixed value downloading combination unit pairs the protection fixed value single file information in the background database with the corresponding protection device model in the intelligent substation by using the protection fixed value intelligent matching unit, establishes interaction with the protection device through the station control layer MMS message engine, and downloads the fixed value in the protection fixed value single file to the protection device by one key.

In an embodiment of the present invention, in the step S1, the analyzing of the protection fixed value single file element is to extract information that the file includes a factory station name, a protection device model, an equipment name, a software version number, a setting value name, and a fixed value.

3. The intelligent Substation protection fixed value intelligent downloading method according to claim 1, wherein in S2, the SCD automatic modeling unit reads the SCD file to obtain Substation related information for the substtation, so as to automatically write in new Substation basic information; reading configuration information of all protection devices acquired by the IED for establishing a protection device model; and reading DataTypetemplates to acquire protection related data type information for forming an MMS message type generated short address.

In an embodiment of the present invention, in S3, after the fixed value one-touch install in the fixed value form file, the fixed value install combining unit performs install confirmation by calling the fixed value information of the protection device.

In an embodiment of the invention, the protection constant value intelligent matching unit performs fuzzy matching on the protection constant value single file information and the plant station name, the equipment name and the setting value name of the protection device model through a regular expression and a fuzzy matching rule.

In an embodiment of the present invention, the station control layer MMS message engine generates a short address by using a protection fixed value intelligent matching unit, protection fixed value single file information and a protection device model, and forms an MMS message through a LibIEC61850 library, for reading and downloading a protection device in communication with a protection device corresponding to the protection device model, in an embodiment of the present invention, in S1, a keyword of a required data name is defined in the protection fixed value single intelligent parsing unit, after parsing the protection fixed value single file, the protection fixed value single intelligent parsing unit intelligently matches data information in the protection fixed value single file with the keyword, and displays row and column information of the required data,

in an embodiment of the present invention, the matching result may be manually confirmed according to the row and column information displaying the required data, when there is a difference between the matching result and the keyword, the displayed data row and column information is manually modified, and then the information of the protection constant value sheet file is stored in the background database and associated with the corresponding protection device.

In an embodiment of the present invention, the intelligent matching uses a regular expression or a fuzzy matching rule.

The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects:

according to the embodiment of the invention, the protection constant value single file in the main station is obtained, the information in the protection constant value single file is analyzed and read, the information is stored in the background database, the automatic modeling of the intelligent substation is completed through the SCD file of the intelligent substation, the intelligent substation model comprises models of all protection devices in the substation, the protection constant value single file information and the corresponding protection device model can be directly obtained from the background database in the substation, namely the intelligent substation, by utilizing the method, the pairing of the protection constant value single file information and the corresponding protection device model is automatically completed, the protection constant value of the protection device in the intelligent substation is downloaded, the potential hazard which can be caused by the fact that the protection constant value is downloaded by utilizing a third system is avoided, the protection constant value intelligent one-key downloading is realized, the labor cost is saved, the potential safety hazard of manual input is avoided, and the protection constant value is ensured to be fast, Correct and direct type bottom-loading.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a diagram of a physical connection architecture for an intelligent substation network in which the present invention is applied;

FIG. 2 is a logic block diagram of the present invention;

FIG. 3 is a logic diagram of an SCD automatic modeling unit according to the present invention;

FIG. 4 is a logic diagram of a protection constant value single intelligent parsing unit of the present invention;

FIG. 5 is a logic diagram of the protection-fixed-value intelligent matching unit of the present invention;

FIG. 6 is a logic block diagram of a station control layer MMS message engine of the present invention;

fig. 7 is a logic block diagram of a constant value undermount combination unit according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the present invention is used, the description is merely for convenience of describing the present invention and simplifying the description, but the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and operation, and thus, cannot be understood as the limitation of the present invention.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "configured," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Protection constant value: the fixed value is also called a setting value and a set value, and means that when a certain physical quantity reaches a certain value in an automatic control system, a certain action will occur. In the mathematics subject, a fixed numerical value is meant. Such as: in order to protect a certain motor, an overcurrent relay is arranged in a control system, the overcurrent relay is adjusted to be operated at 100A, and when the current reaches 100A, the overcurrent relay is operated to cut off the power supply or send a signal. This 100A is the setting value of the overcurrent relay.

Protection fixed value downloading process: protection fixed value downloading is generally divided into a transformer substation basic construction process and a fixed value modification process in an operation process, when the protection fixed value needs to be written into a protection device, secondary personnel in charge generally perform setting calculation to obtain the protection fixed value, then the fixed value list is audited through an existing OMS system, and the fixed value list after SOP process approval is handed to maintenance protection team personnel to download the protection fixed value according to receipts.

Network architecture in intelligent substation: the intelligent substation network structure is divided into three layers, namely a process layer, a spacer layer and a station control layer, wherein the three layers are two networks; the "two networks" refer to a process layer network and a station control layer network. Here we are concerned with process level networks, station level networks and dispatch data networks where substations transmit data to the outside.

Referring to fig. 1 to 7, a method for intelligently downloading protection fixed values of an intelligent substation includes the following steps,

s1, remotely acquiring a protection constant value single file in a main station, intelligently analyzing the protection constant value single file by using a protection constant value single intelligent analysis unit, and extracting the protection constant value single file which comprises information of a station name, a protection device model, an equipment name, a software version number, a setting value name and a constant value; and displaying the row and column information of the required data after intelligent matching, confirming the matching result, directly modifying the fixed value list after the row and column are matched when slight change exists, storing the fixed value list into a background database, and associating the fixed value list with the protection device.

In step S1, a keyword of a desired data name is defined in the protection setting list intelligent analysis unit, and a plurality of data information such as a setting value name, an original setting value, a new setting value, and the like are recorded in the protection setting list file, and the defined keyword may be a setting value name, a new setting value, and the like. After the protection constant value single file is analyzed, the protection constant value single intelligent analysis unit intelligently matches the data information in the protection constant value single file with the keywords through a regular expression or a fuzzy matching rule, and displays the row and column information of the required data, for example, when the defined keywords are new setting values, the intelligent matching result displays that the four keywords of the new setting values are in the nth row and the mth column in the protection constant value single file, and then the data of the new setting values are all from the nth +1 row in the protection constant value single file. According to the row and column information displaying the required data, the matching result can be manually confirmed, and when the matching result is different from the keyword, for example, when the keyword is defined as a "setting value name", the matching result is the "old setting value name", and the actually required matching result is the "new setting value name", the matching result is different from the keyword. After each matching, the intelligent protection constant value sheet analysis unit displays the matching result, the displayed data row and column information can be manually modified at the moment, the matching result is corrected into the required data information, and then the information of the protection constant value sheet file is stored into the background database and is associated with the corresponding protection device.

S2, importing the SCD file of the intelligent substation into an SCD automatic modeling unit, reading the information in the SCD file and storing the information in a background database to complete automatic modeling of the intelligent substation;

the SCD file includes five parts, which are Header (and only 1), Substation (0 to n), multimedia (0 or 1), IED (0 to n), DataTypeTemplates (0 or 1), respectively, wherein

A Header: an information header containing information of the SCL file itself;

and (4) substtation: the transformer substation describes primary equipment and primary topology;

IED: the description of the intelligent electronic device describes the configuration information of each lED, and comprises information such as access points, logic devices, logic nodes, data objects, data attributes, interconnection relations and the like;

the verification: a communication system description describing communication configuration information;

DataTypeTemplates: and the data type template describes a logic node type, a data object type, a data attribute type and an enumeration type in the SCD file.

Reading the SCD file in the step S2 to obtain the relevant information of the transformer Substation for reading the substtation, and automatically writing the basic information of the newly-built transformer Substation; reading configuration information of all protection devices acquired by the IED for establishing a protection device model; and reading DataTypetemplates to acquire protection related data type information for forming an MMS message type generated short address.

S3 fixed value downloading combination unit pairs the protection fixed value single file information in the background database with the corresponding protection device model in the intelligent substation by using the protection fixed value intelligent matching unit, establishes interaction with the protection device through the station control layer MMS message engine, downloads the fixed value in the protection fixed value single file to the protection device by one key, and after downloading the fixed value in the protection fixed value single file by one key, the fixed value downloading combination unit performs downloading confirmation through calling the fixed value information of the protection device.

In the step S3, the protection-fixed-value intelligent matching unit performs fuzzy matching on the protection-fixed-value single file information and the plant name, the equipment name, and the setting value name of the protection device model through the regular expression and the fuzzy matching rule, and the fuzzy matching rule base can be continuously supplemented in the operation process of the invention to improve the matching fault tolerance rate.

In step S3, the station control layer MMS message engine generates a short address by using the protection fixed value intelligent matching unit, the protection fixed value single file information, and the protection device model, and forms an MMS message through the LibIEC61850 library, for reading the protection fixed value of the protection device by communicating with the protection device corresponding to the protection device model and downloading the protection device protection fixed value.

The invention loads the protection constant value list file, accesses the substation control layer network of the transformer substation, is directly connected with the protection device, can directly read the IED information supplement SCD model of the device, loads the protection constant value list Excel file, and carries out all-station one-click downloading on the protection constant value list through the MMS message, and the invention has no any third party in the middle for fast, stable and reliable switching, and avoids inaccurate conditions caused by other system configuration in the middle.

According to the invention, the intelligent one-key downloading of the protection constant value is realized by realizing the MMS message engine, SCD automatic modeling, the intelligent analysis unit of the Excel protection constant value list, the intelligent matching unit of the protection information and the fixed value downloading combination unit of the intelligent substation station control layer, so that the potential safety hazard of manual input is avoided while the manpower is saved, and the rapid, correct and direct downloading of the protection constant value is ensured.

The invention can obtain the protection constant value single file information and the corresponding protection device model from the background database directly in the substation, automatically pair the protection constant value single file information and the corresponding protection device model, and download the protection constant value of the protection device in the intelligent substation.

The beneficial effects after the implementation of the invention are as follows:

1) economic benefits

(1) According to the average 35 sets of protection devices in each station of a 220kV transformer substation, approximately 2900 setting values are required to be set, one person needs 22 hours for executing the total station setting value, the normal work is carried out for 8 hours every day, 2.75 days are required, 100 transformer substations are required to be newly built and installed and daily modified every year, and the total time can be saved by 2.75 multiplied by 100 to 275 days.

(2) According to the 'budget quota for power grid maintenance engineering' issued by the national energy agency, the average base price of the measurement and control devices is 1557.38 yuan/time, the average base price of the system inspection class is 766.06 yuan/time, and the average base price of the three types of common work is 894.64 yuan/time.

(3) According to the basic price calculation of the measuring and controlling device, at least 275 multiplied by 1557.38-42.8279 ten thousand yuan can be saved each year

2) Social benefits

According to the development target of the modern company of 'one strong three excellent' of the national grid company, the management efficiency of the enterprise needs to be improved and the operation cost needs to be reduced by improving the informatization degree and the management level of the enterprise. The invention realizes the protection of the fixed value intelligent one-key downloading, saves the time of the manual downloading process, reduces the operation and maintenance cost, strengthens the management of the actual operation process of the fixed value downloading, strengthens the management means for the safe and stable operation of the power grid, and achieves the aims of improving the management level and promoting the production operation by the information means.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. An intelligent downloading method for a protection fixed value of an intelligent substation is characterized by comprising the following steps,

s1, accessing a substation control layer network of the transformer substation, directly connecting a protection device, remotely obtaining a protection constant value single file in a main station, and intelligently analyzing the protection constant value single file by using a protection constant value single intelligent analysis unit;

s2, importing the SCD file of the intelligent substation into an SCD automatic modeling unit, reading the information in the SCD file and storing the information in a background database to complete automatic modeling of the intelligent substation;

and S3, the fixed value downloading combination unit pairs the protection fixed value single file information in the background database with the corresponding protection device model in the intelligent substation by using the protection fixed value intelligent matching unit, establishes interaction with the protection device through the station control layer MMS message engine, and downloads the fixed value in the protection fixed value single file to the protection device by one key.

2. The intelligent substation protection fixed value downloading method according to claim 1, wherein the analyzing of the protection fixed value single file element in S1 is to extract information of files including a station name, a protection device model, an equipment name, a software version number, a setting value name, and a fixed value.

3. The intelligent substation protection fixed value intelligent downloading method according to claim 1, wherein the SCD automatic modeling unit in S2 reads the SCD file as

Reading the Substation related information obtained by the substtation, and automatically writing the newly-built Substation basic information;

reading configuration information of all protection devices acquired by the IED for establishing a protection device model;

and reading DataTypetemplates to acquire protection related data type information for forming an MMS message type generated short address.

4. The intelligent substation protection fixed-value intelligent downloading method according to claim 1, wherein in S3, after the fixed-value one-click downloading in the protection fixed-value single file, the fixed-value downloading assembly unit performs downloading confirmation through fixed-value information calling the protection device.

5. The intelligent substation protection constant value downloading method according to claim 1, wherein the protection constant value intelligent matching unit performs fuzzy matching on the protection constant value single file information and the plant station name, the equipment name and the setting value name of the protection device model through a regular expression and a fuzzy matching rule.

6. The intelligent substation protection constant value intelligent downloading method according to claim 1, wherein the station control layer MMS message engine generates a short address by using the protection constant value intelligent matching unit, the protection constant value single file information and the protection device model, and forms an MMS message through a LibIEC61850 library, for reading the protection constant value of the protection device by communicating with the protection device corresponding to the protection device model and downloading the protection constant value of the protection device.

7. The intelligent substation protection fixed-value intelligent downloading method according to claim 1, wherein in S1, a keyword of a required data name is defined in the protection fixed-value single intelligent parsing unit, and after the protection fixed-value single file is parsed, the protection fixed-value single intelligent parsing unit intelligently matches data information in the protection fixed-value single file with the keyword and displays row and column information of the required data.

8. The intelligent substation protection fixed value intelligent downloading method according to claim 7, characterized in that the matching result can be confirmed manually according to the row and column information displaying the required data, when the matching result is different from the keyword, the displayed data row and column information is modified manually, and then the information of the protection fixed value list file is stored in a background database and is associated with the corresponding protection device.

9. The intelligent substation protection fixed value intelligent downloading method according to claim 7 or 8, characterized in that the intelligent matching adopts a regular expression or a fuzzy matching rule.

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