CN105426616A - Six-unification standard-based virtual terminal matching method - Google Patents

Abstract

The invention relates to a virtual terminal matching method based on the "six unifications" standard, comprising the following steps: 1) establishing a standard equipment template; 2) establishing a standard virtual terminal connection template according to the standard equipment template established in step 1); 3) acquiring Match keywords of standard virtual terminal connection templates; 4) Obtain the list of IEDs in all stations, parse the IEDs including IED description and IEDname; obtain the inputs information of all IEDs in the station, and find the mapping relationship between the descriptions of the sending side and the receiving side according to the index path; 5) Select the wiring method, and according to the IED list parsed in the SCD file, sequentially match the IED with the matching module of the standard virtual terminal connection template. Beneficial effects: the virtual terminal connection in the SCD is matched and verified according to the principle of description matching through the predefined standard virtual terminal connection relationship template.

Description

A Virtual Terminal Matching Method Based on "Six Unified" Standards

technical field

The invention relates to a virtual terminal matching technology, in particular to a virtual terminal matching method based on the "six unifications" standard.

Background technique

The correct action of relay protection in the secondary system depends not only on the correctness of the logic algorithm of the microcomputer protection itself, but also on the stability of the quality of the protection device itself, and more importantly, whether the wiring of the secondary circuit on site is correct or not , because once the protection has passed the network access test, the software and hardware itself have been certified. Under the current technical conditions, the defect rate of the product itself is relatively low after mass production, and the problem is often caused by the secondary circuit problem on site. In the smart substation, the secondary circuit is realized by optical fiber communication. Compared with the traditional electrical connection, it has natural advantages: reducing long-distance cables and cables between screens, saving cost and pipeline area; solving the problem of signal cable transmission. The problem of electromagnetic interference increases the reliability of communication; the signal transmission circuit self-inspection can be realized through the network message, and the state maintenance of the transmission circuit can be realized, which avoids the disadvantage that the traditional cable circuit cannot be self-inspected when the contact is unreliable.

Although the smart substation has many advantages compared with the secondary circuit of the conventional substation, there are also problems that cannot be verified intuitively. The secondary circuit in the intelligent station is realized through the virtual terminal connection, and is stored in the system configuration description (SCD) file through the SCL language, which contains the operation information of all equipment, including the data information, data type, Communication parameters, control block parameters, circuit relationships between devices, especially key connection relationships such as tripping and closing, sampling, etc. The secondary connection debugging process is as follows: Generally, the SCD system configuration is completed by the design institute (the current actual situation is mostly completed by the integrator, and the design institute only provides the virtual terminal connection EXCEL form), and each manufacturer downloads the configuration file generated by the SCD to their respective In the device, the commissioning personnel conduct online verification of the virtual terminal connection according to the SCD file of the design institute (currently mostly an integrator). Since the virtual terminals of various manufacturers are not uniform, it is not convenient for comparison and verification.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the above prior art, and provide a virtual terminal matching method based on the "six unifications" standard, which is specifically realized by the following technical solutions:

The virtual terminal matching method based on the "six unifications" standard includes the following steps:

1) Establish a standard equipment template;

2) According to the standard equipment template established in step 1), establish a standard virtual terminal connection template;

3) Obtain the matching keywords of the standard virtual terminal connection template;

4) Through the IED analysis module of SCD, obtain the list of IEDs in all stations, analyze the IEDs including IED description and IEDname; through the Inputs analysis module of SCD, obtain the inputs information of all IEDs in the station, and find the information of the sending side and the receiving side according to the index path Described mapping relationship;

5) Select the wiring method, and according to the IED list parsed in the SCD file, sequentially match the IED with the matching module of the standard virtual terminal connection template.

The further design of the virtual terminal matching method based on the "six unifications" standard is that in the step 1), the interface definitions of each type of equipment are created according to the definition of the virtual terminal interface of each type of equipment according to the "six unifications" standard , each device type includes output datasets dsGOOSE, dsSV and input datasets dsGOOSEIn, dsSVIn, the input and output datasets are merged to create a standard device template, which is a child element of the template virtual terminal connection.

The further design of the virtual terminal matching method based on the "six unifications" standard is that in the above step 2), when creating the standard virtual terminal connection template, the three-level index is carried out through the three conditions of voltage level, wiring mode and equipment type way to store.

The further design of the virtual terminal matching method based on the "six unifications" standard is that among the three conditions, the voltage levels include 10kV, 35kV, 66kV, 110kV, 220kV, 330kV, 500kV, and 750kV; , single bus section, single bus 3 sections, double busbar, double busbar double section, double busbar single section, 3/2 wiring; equipment types include line protection, busbar protection, transformer protection, circuit breaker protection, short leads protection, bus tie protection, capacitor protection, transformer protection, reactor protection, merging unit and intelligent terminal.

A further design of the virtual terminal matching method based on the "six unifications" standard lies in that, in the step 4), the IED list includes IED description and IEDname.

The further design of the virtual terminal matching method based on the "six unifications" standard is that the matching principles in step 5) include:

Prioritize matching according to IED description and then matching according to IEDname: first match according to IED description keywords, if the matching is successful, a binding relationship will be formed; No matching success information;

Prioritize matching based on IEDname and then match according to IED description: first match according to IEDname, if the matching is successful, a binding relationship will be formed; No matching success information;

Match IED description and IEDname at the same time: firstly match according to the IED description keyword, if the match is successful, then match the IEDname, and if the match is successful, a binding relationship will be formed; in other cases, the match will be considered unsuccessful, and a message of unmatched success will be prompted.

The further design of the virtual terminal matching method based on the "six unifications" standard is that, after step 5), it also includes manual correction of template matching failure or matching errors.

The further design of the virtual terminal matching method based on the "six unifications" standard is to carry out the virtual terminal connection verification after the manual correction link, and the virtual terminal verification sequentially verifies the virtual terminal connections of all IEDs according to the matching principle. and generate verification results.

The further design of the virtual terminal matching method based on the "six unifications" standard is that the verification results are displayed on an intuitive interface, and the differences are marked with colors.

The advantages of the present invention are as follows:

The virtual terminal matching method based on the "six unifications" standard proposed by the present invention uses a predefined standard virtual terminal connection relationship template to match and verify the virtual terminal connection in the SCD according to the principle of description matching. At the same time, in the system configuration stage, the virtual terminal connection of the SCD is verified and checked offline, which greatly reduces the debugging work on site.

Description of drawings

Figure 1 is a schematic diagram of the SV reception standard connection of the "220kV double busbar line protection" based on the "six unifications".

Figure 2 is a schematic diagram of the GOOSE receiving standard connection of the "220kV double busbar line protection" based on the "six unifications".

detailed description

The solution of the present invention will be described in detail below.

The virtual terminal matching method based on the "six unifications" standard of the present embodiment includes the following steps:

1. Establish a standard equipment template

According to the definition of the virtual terminal interface of various types of equipment in the "six unification" specification documents, the interface definition of each type of equipment is created. Each equipment type includes output data sets dsGOOSE and dsSV and input data sets dsGOOSEIn and dsSVIn (input data sets are similar to output The data set is the data set of all input paths), and the input and output data sets are combined to create a standard equipment template. The equipment standard template is a sub-element of the virtual terminal connection of the template, so it needs to be completely consistent with the description of the "six unifications" specification. In order to ensure the correctness of the subsequent verification.

2. Establish a standard virtual terminal connection template

The standard virtual terminal connection needs to be created based on the standard equipment template completed in the previous step, see attached drawings 1 and 2, taking into account the differences in the virtual terminal interfaces of different voltage levels, different main wiring methods, and the resulting virtual terminal connections. Line difference, so when creating a template, it will be stored through a 3-level index. Among them, the voltage levels include: 10kV, 35kV, 66kV, 110kV, 220kV, 330kV, 500kV, 750kV, etc. Wiring methods include: single busbar, single busbar section, single busbar 3 section, double busbar, double busbar double section, double busbar single section, 3/2 wiring, etc. Equipment types include: line protection, busbar protection, transformer protection, circuit breaker protection, short lead protection, bus tie (section) protection, capacitor protection, used transformer (ground transformer) protection, reactor protection, merging unit, intelligent terminal, etc. .

In this embodiment, the virtual terminal connection template for 220kV double busbar line protection needs to be stored in the form of 220kV\double busbar\line protection level 3 index. The stored content is the SV connection and GOOSE connection of the device as the receiver. The first creation of the virtual terminal connection template requires manual wiring, so the continuous establishment and improvement of the standard virtual terminal connection template library is the basis for subsequent virtual terminal connection verification.

3. Obtain the matching keywords of the standard virtual terminal connection template

How to find the corresponding template for each IED is the biggest difficulty when batch verification is performed on the connections of each IED in the SCD file. The present invention proposes a method of matching and searching based on the IED description and the IEDname as a keyword to solve the problem. The keyword The extraction of is automatically extracted when the standard connection template was created in the previous step.

In this embodiment, for the virtual terminal connection template of 220kV double busbar line protection, the virtual terminal connection needs to be stored in the way of 220kV\double busbar\line protection three-level index, and the keywords are automatically extracted by the storage index. Considering In terms of engineering practice, the key word extracted from the IED description is: 220kV line protection. The keyword extracted from IEDname is: PL22. If the connection mode can be introduced, then the keyword and the path index will form a fixed and unique correspondence. After the matching is successful, the corresponding virtual terminal connection template file will be found through the path index.

4. Analysis of SCD file

Obtain the list of IEDs in all stations through the IED analysis module of SCD, and analyze IEDs including IED description and IEDname. Through the Inputs parsing module of the SCD, the inputs information of all IEDs in the station is obtained, and the mapping relationship between the sending side and the receiving side is found according to the index path.

6. Choice of wiring method

In actual engineering, because the IED description and IEDname in the SCD file only include the voltage level and equipment type, and lack the description of the wiring mode, the index of the wiring mode is lacking in the template matching, and because the substation generally has a maximum of 3 voltage levels, through The default way to handle and provide a way to modify the interface will not increase too much work.

7. Matching between IED and standard virtual terminal connection template

According to the IED list parsed in the SCD file, including the IED description and IEDname, the IEDs are sequentially matched with the matching module of the template. The matching principle can be defined according to the user's needs. It can first match according to the IED description and then match according to the IEDname, or can first match according to the IEDname and then match according to the IED description, or both at the same time.

1) First match according to IED description and then according to IEDname

First match according to the IED description keywords, and if the matching is successful, a binding relationship will be formed; if the matching is unsuccessful, then matching will be performed according to the IEDname, and if the matching is successful, a binding relationship will be formed;

2) Prioritize matching based on IEDname and then IED description

Match according to the IEDname first, and if the matching is successful, a binding relationship will be formed; if the matching is unsuccessful, then matching will be performed according to the IED description keywords, and if the matching is successful, a binding relationship will be formed;

3) The IED description matches the IEDname at the same time

First, match according to the IED description keyword. If the match is successful, then match the IEDname.

This embodiment illustrates with an example: for PL2201: 220kV Nanqin line protection, according to the IED description keywords "220kV line protection" and "220kV is double busbar wiring", the "220kV Nanqin line protection" and "220kV double busbar line Protection template" matching relationship. According to the IEDname "PL22" and "220kV is double-bus wiring", the matching relationship between "PL2201" and "220kV double-bus line protection template" will also be completed.

8. Modification of template matching

If the template matching is not successful or the matching is wrong, it can be completed through manual correction, so as to ensure the accuracy of template matching.

In this embodiment, for PZ1001: 10kV standby self-switching protection, no corresponding template is found, and the automatic matching fails. It can be matched with the "10kV single-bus segment standby self-switching template" through manual correction.

9. Virtual terminal connection verification

Based on the above steps, the IED in the SCD file has established a binding relationship with the corresponding template, and the virtual terminal connection verification can be performed. The virtual terminal verification verifies the virtual terminal connections of all IEDs in turn according to the principle of description matching, and generates verification results.

10. Verification result display

Intuitive interface display for the verification results of virtual terminals, and color marking for the difference parts.

Claims (9)

1., based on an empty terminal matching process for " six is unified " standard, it is characterized in that comprising the steps:

1) Criterion equipment template;

2) according to the standard device template that step 1) is set up, the empty terminal of Criterion connects template;

3) the coupling key word that the empty terminal of standard connects template is obtained;

4) by the IED parsing module of SCD, obtain the IED list in all stations, resolve IED and comprise IED description and IEDname; By the Inputs parsing module of SCD, obtain the inputs information of IED in all stations, and find the mapping relations of the description of transmitter side and receiver side according to index path;

5) select the mode of connection, and according to the IED list of resolving in SCD file, mated successively with the matching module that the empty terminal of standard is connected template by IED.

2. the empty terminal matching process based on " six is unified " standard according to claim 1, it is characterized in that in described step 1), according to the empty terminal interface definition of " six is unified " codes and standards to all types of equipment, create the interface definition of all types of equipment, each device type comprises output data set dsGOOSE, dsSV and input data set dsGOOSEIn, dsSVIn, merge input and output data set to create standard device template, described equipment standard template is the daughter element that the empty terminal of template connects.

3. the empty terminal matching process based on " six is unified " standard according to claim 1, it is characterized in that described step 2) in, when the empty terminal of the standard of establishment connects template, the mode of carrying out three level list by electric pressure, the mode of connection and device type three conditions stores.

4. the empty terminal matching process based on " six is unified " standard according to claim 3, is characterized in that in described three conditions, electric pressure comprises 10kV, 35kV, 66kV, 110kV, 220kV, 330kV, 500kV, 750kV; The mode of connection comprises single busbar, single mother partition, single female 3 segmentations, double-bus, the two segmentation of double-bus, bus single-subsection, 3/2 wiring; Device type comprises route protection, bus protection, tranformer protection, breaker protection, stub protection, mother protection, capacitor protection, change protection used, reactor protection, merge cells and intelligent terminal.

5. the empty terminal matching process based on " six is unified " standard according to claim 1, is characterized in that in described step 4), and described IED list comprises IED and describes and IEDname.

6. the empty terminal matching process based on " six is unified " standard according to claim 5, is characterized in that the matching principle in described step 5) comprises:

Preferentially describe according to IED and mate according to IEDname again: first describe key word according to IED and mate, the match is successful then forms binding relationship; Mate unsuccessful, then mate according to IEDname, the match is successful then forms binding relationship; Mate unsuccessful, then information of pointing out that the match is successful;

Preferential according to IEDname again according to IED profile matching: first mate according to IEDname, the match is successful then forms binding relationship; Mate unsuccessful, then describe key word according to IED and mate, the match is successful then forms binding relationship; Mate unsuccessful, then information of pointing out that the match is successful;

IED describes and mates with IEDname simultaneously: first describe key word according to IED and mate, the match is successful then mates IEDname, and the match is successful then forms binding relationship; Other situations then think that coupling is unsuccessful, prompting the match is successful information.

7. the empty terminal matching process based on " six unified " standard according to claim 6, it is characterized in that also comprising after step 5) not to have successfully template matches or the artificial correction link of matching error.

8. the empty terminal matching process based on " six is unified " standard according to claim 7, it is characterized in that connecting verification at the artificial empty terminal of the laggard row of link of revising, empty terminal verification verifies successively according to the empty terminal line of described matching principle to all IED, and generates check results.

9. the empty terminal matching process based on " six is unified " standard according to claim 8, is characterized in that described check results carries out showing interface intuitively, carries out color marking to difference section.