CN113780598A - Intelligent substation virtual terminal checking method - Google Patents
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Abstract
The invention discloses a method for checking a virtual terminal of an intelligent substation, which comprises the following steps: establishing a terminal library of the IED; establishing a typical IED template; setting the voltage grade and the wiring mode of the transformer substation, and selecting typical IED templates of different types to generate transformer substation templates; importing a substation template, a terminal library of the IED and an SCD file to be verified, and setting the equipment type, the voltage class, the interval type, the wiring mode and the branch attribute of the IED in the SCD file to be verified; comparing the virtual terminal connection relation of the IED in the SCD file to be verified with the virtual terminal connection relation in the typical IED template, and outputting a virtual terminal verification result; the invention has the advantages that: the checking of the virtual terminals of the intelligent substation is realized, and the correctness and the integrity of the virtual terminal connecting line are automatically judged, so that the manual inspection period is greatly shortened, and the working efficiency is improved.
Description
Technical Field
The invention relates to the technical field of operation and maintenance of intelligent substations, in particular to a method for checking a virtual terminal of an intelligent substation.
Background
The intelligent substation IED virtual terminal connection relation influences secondary circuit connection relations of tripping, closing, sampling and the like of the intelligent substation, and is very important for safe operation of the intelligent substation. Therefore, an expert is usually organized to review the virtual terminals of the IED before commissioning the intelligent substation. Because the substations with different voltage levels have different main wiring modes and one substation has a plurality of outgoing lines, particularly for the substations with 330kV or more, the virtual terminal wiring of the IED is more complicated, and at the present stage, whether the virtual terminal wiring is correct or not is manually checked, so that the workload is large, and mistakes are easily omitted.
Chinese patent grant publication No. CN109710809B, relates to an expert database-based method for automatically connecting virtual terminals of SCD files, and the method comprises: establishing a format and a generation mode of a virtual terminal expert library; when the existing SCD is learned to automatically create the virtual terminal expert database, the new virtual terminal information is compared with the information stored in the established virtual terminal expert database and is accepted or rejected; establishing a virtual terminal connection expert library; and the SCD virtual terminal based on the virtual terminal connection expert library is automatically connected. According to the invention, by establishing the virtual terminal connection expert library, a batch design method can be adopted to select the corresponding template to realize the purpose, and the SCD file can be rapidly and efficiently manufactured; under the condition that the virtual terminal connection expert library is optimized continuously, the accuracy of SCD file manufacturing is improved continuously, and the efficiency of manufacturing SCD by designers is improved greatly. The invention belongs to the field of automatic connection of virtual terminals to produce SCD files, and the checking of the virtual terminals in the SCD files cannot be realized. In conclusion, in the prior art, the virtual terminals of the intelligent substation are not verified, and the correctness and integrity of the virtual terminal connection line cannot be automatically judged, so that the manual inspection period is long and the working efficiency is low.
Disclosure of Invention
The invention aims to solve the technical problem of providing a checking method of the virtual terminals of the intelligent substation, which realizes the checking of the virtual terminals of the intelligent substation, automatically judges the correctness and the integrity of the connection lines of the virtual terminals, greatly shortens the manual checking period and improves the working efficiency.
The invention solves the technical problems through the following technical means: a virtual terminal checking method for an intelligent substation comprises the following steps:
step 1: according to virtual terminals of relay protection specifications, terminal libraries of various IEDs of different equipment types, different voltage classes, different interval types and different wiring modes are established;
step 2: establishing various typical IED templates of different equipment types, different voltage classes, different interval types, different wiring modes and different associated virtual terminal connection relations;
and step 3: setting the voltage grade and the wiring mode of the transformer substation, and selecting typical IED templates of different types to generate transformer substation templates;
and 4, step 4: importing a substation template, a terminal library of the IED and an SCD file to be verified, and setting the equipment type, the voltage class, the interval type, the wiring mode and the branch attribute of the IED in the SCD file to be verified;
and 5: and comparing the virtual terminal connection relation of the IED in the SCD file to be verified with the virtual terminal connection relation in the typical IED template, and outputting a virtual terminal verification result.
According to the method, the typical IED templates are established, the voltage levels and the wiring modes of the transformer substation are set, the typical IED templates of different types are selected to generate the transformer substation templates, the virtual terminal connection relation of the IED in the SCD file to be verified is compared with the virtual terminal connection relation in the typical IED templates, the virtual terminal verification result is output, the verification of the virtual terminals of the intelligent transformer substation is achieved, the correctness and the integrity of the virtual terminal connection lines are automatically judged, and therefore the manual inspection period is greatly shortened and the working efficiency is improved.
Further, the virtual terminals of the terminal bank of the IED include an SV transmitting terminal, an SV receiving terminal, a GOOSE transmitting terminal, and a GOOSE receiving terminal.
Further, the terminal library of the IED includes a plurality of virtual terminals of different manufacturers, versions and models.
Further, a regular expression of a bus-differential branch is established for the IED for bus protection in the terminal library of the IED, where bus protection refers to that the bay type is bus and the equipment type is protection.
Further, the step 1 further comprises: each virtual terminal in a terminal library of the IED is integrated into a terminal dictionary according to the virtual terminal description of the virtual terminal and the standard virtual terminal description of the virtual terminal of different manufacturers, and the terminal dictionary comprises SV sending terminals, SV receiving terminals, GOOSE sending terminals and standard virtual terminal descriptions of the GOOSE receiving terminals.
Further, the building process of the typical IED template in step 2 is as follows:
matching a terminal library of the IED according to the device type, the voltage class, the interval type and the wiring mode of the imported IED; extracting the association virtual terminal connection relation of the imported IED according to the matching result; and after the virtual terminal of the imported IED and the virtual terminal of the corresponding manufacturer, version and model in the terminal library of the IED are identified in the matching process, the virtual terminal description of the connection relation of the imported IED and the virtual terminal description of the association virtual terminal is modified and replaced by the corresponding standard virtual terminal description in the terminal library of the IED.
Further, the generating process of the substation template in step 3 is as follows:
and setting the voltage grade and the wiring mode of the transformer substation, and selecting a typical IED template with the same voltage grade or lower than the voltage grade of the transformer substation according to the voltage grade and the wiring mode of the transformer substation to generate a transformer substation template according to the wiring mode of the typical IED template.
Still further, the step 5 includes:
step 501: matching a terminal library of the IED and a typical IED template in a substation template according to the equipment type, the voltage level, the interval type and the wiring mode of the IED in the SCD file to be verified;
step 502: extracting the association virtual terminal connection relation of the IED in the SCD file to be verified, matching each virtual terminal in the association virtual terminal connection relation of the IED in the SCD file to be verified with the terminal dictionary, and modifying and replacing each virtual terminal description in the association virtual terminal connection relation with the standard virtual terminal description in the matched terminal dictionary;
step 503: traversing the association virtual terminal connection relation of the IED in the SCD file to be verified, wherein if the transmitting terminal and the receiving terminal of the virtual terminal connection relation of the IED in the SCD file to be verified are not matched with the terminal dictionary, the virtual terminal connection relation is no verification;
if one of a transmitting terminal or a receiving terminal of the virtual terminal connection relation of the IED in the SCD file to be verified is matched with the terminal dictionary, matching the transmitting terminal description of the virtual terminal connection relation in the typical IED template according to the transmitting terminal of the virtual terminal connection relation of the IED in the SCD file to be verified, matching the receiving terminal description of the virtual terminal connection relation of the IED in the SCD file to be verified with the receiving terminal description of the virtual terminal connection relation in the typical IED template successfully, wherein the virtual terminal connection relation is dictionary-free, and the matching is not successful, so that attention is needed;
if the transmitting terminal or the receiving terminal of the virtual terminal connection relation of the IED in the SCD file to be verified can be matched with the terminal dictionary, the transmitting terminal description of the virtual terminal connection relation in the typical IED template is matched according to the transmitting terminal of the virtual terminal connection relation of the IED in the SCD file to be verified, the receiving terminal description of the virtual terminal connection relation of the IED in the SCD file to be verified is matched with the receiving terminal description of the virtual terminal connection relation in the typical IED template, and the matching is successful, the virtual terminal connection relation is normal verification; and the matching is failed, if one of the sending terminal and the receiving terminal is successfully matched, the virtual terminal connection relation is misconnection, and if the matching is not successful, the virtual terminal connection relation is multi-connection.
Still further, the step 303 further includes:
if the IED in the SCD file to be verified is bus protection, matching the regular expression of the mother-difference branch according to the branch attribute of the matched typical IED template, modifying the receiving terminal description of the virtual terminal connection relation of the IED in the SCD file to be verified according to the regular expression of the mother-difference branch, and if the matching is successful, performing normal verification; if the typical IED template matched with the IED in the SCD file to be verified is bus protection, the regular expression of the mother-difference branch is matched according to the branch attribute of the IED in the SCD file to be verified, the sending terminal description of the virtual terminal connection relation of the IED in the SCD file to be verified is modified according to the regular expression of the mother-difference branch, and if the matching is successful, normal verification is performed.
Still further, the step 303 further includes:
establishing a special terminal set for virtual terminals with the same meaning in a terminal library of the IED, and when matching fails in the process that a transmitting terminal of the virtual terminal connection relation of the IED in the SCD file to be verified is matched with a transmitting terminal description of the virtual terminal connection relation in a typical IED template, if the transmitting terminal of the virtual terminal connection relation of the IED in the SCD file to be verified and the transmitting terminal description of the virtual terminal connection relation in the IED template are both in the same special terminal set, determining that matching is successful; in the process that the receiving terminal of the virtual terminal connection relation of the IED in the SCD file to be verified is matched with the receiving terminal description of the virtual terminal connection relation in the typical IED template, when matching fails, if the receiving terminal of the virtual terminal connection relation of the IED in the SCD file to be verified and the receiving terminal description of the virtual terminal connection relation in the IED template are both in the same special terminal set, the matching is still determined to be successful.
The invention has the advantages that:
(1) according to the method, the typical IED templates are established, the voltage levels and the wiring modes of the transformer substation are set, the typical IED templates of different types are selected to generate the transformer substation templates, the virtual terminal connection relation of the IED in the SCD file to be verified is compared with the virtual terminal connection relation in the typical IED templates, the virtual terminal verification result is output, the verification of the virtual terminals of the intelligent transformer substation is achieved, the correctness and the integrity of the virtual terminal connection lines are automatically judged, and therefore the manual inspection period is greatly shortened and the working efficiency is improved.
(2) The method and the device can output the verification result of the virtual terminal of the intelligent substation as a visual report, are convenient for workers to check and improve the working efficiency.
Drawings
Fig. 1 is a flowchart of a method for checking a virtual terminal of an intelligent substation according to an embodiment of the present invention;
fig. 2 is a diagram of a checking logic process in the method for checking the virtual terminal of the intelligent substation, disclosed by the embodiment of the 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 embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. 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.
As shown in fig. 1, a method for checking a virtual terminal of an intelligent substation includes the following steps:
step 1: according to virtual terminals of relay protection specifications, terminal libraries of various IEDs of different equipment types, different voltage classes, different interval types and different wiring modes are established;
the virtual terminals of the terminal base of the IED comprise an SV sending terminal, an SV receiving terminal, a GOOSE sending terminal and a GOOSE receiving terminal. The method includes the steps that a regular expression of a bus differential branch is established for an IED for bus protection in a terminal library of the IED, bus protection refers to the fact that a partition type is a bus, a device type is protection, bus protection has 24 branches in practical application, any branch can be connected when the bus protection is connected, for example, a branch six is stored in a typical IED template, a branch seven is connected to an IED (bus protection) to be verified, the two branches cannot be matched necessarily when matched, but the fact that the matching is wrong cannot be judged directly, the fact that the branch seven is connected is theoretically possible, although the branch seven is not connected in the typical IED template, the regular expression is set, and therefore the fact that the judgment is correct under the situation can be further judged. 24 branches, and establishing regular expressions corresponding to the 24 branches.
The terminal library of the IED includes a plurality of virtual terminals of different manufacturers, different versions and different models, and descriptions of the virtual terminals may have some differences among different manufacturers, so that the habitual description modes of each virtual terminal by different manufacturers need to be stored in the terminal library of the IED, so that the same virtual terminal description in the SCD file imported by different manufacturers can be matched with the typical IED template during later verification. Therefore, each virtual terminal in the terminal library of the IED is integrated into a terminal dictionary according to the virtual terminal description of the virtual terminal and the standard virtual terminal description of the virtual terminal by different manufacturers, and the terminal dictionary comprises the standard virtual terminal descriptions of the SV transmitting terminal, the SV receiving terminal, the GOOSE transmitting terminal and the GOOSE receiving terminal.
Step 2: establishing various typical IED templates of different equipment types, different voltage classes, different interval types, different wiring modes and different associated virtual terminal connection relations; the building process of a typical IED template is as follows:
matching a terminal library of the IED according to the device type, the voltage class, the interval type and the wiring mode of the imported IED; extracting the association virtual terminal connection relation of the imported IED according to the matching result; and after the virtual terminal of the imported IED and the virtual terminal of the corresponding manufacturer, version and model in the terminal library of the IED are identified in the matching process, the virtual terminal description of the connection relation of the imported IED and the virtual terminal description of the association virtual terminal is modified and replaced by the corresponding standard virtual terminal description in the terminal library of the IED.
And step 3: setting the voltage grade and the wiring mode of the transformer substation, and selecting typical IED templates of different types to generate transformer substation templates; the generation process of the transformer substation template comprises the following steps:
and setting the voltage grade and the wiring mode of the transformer substation, and selecting a typical IED template with the same voltage grade or lower than the voltage grade of the transformer substation according to the voltage grade and the wiring mode of the transformer substation to generate a transformer substation template according to the wiring mode of the typical IED template.
And 4, step 4: importing a substation template, a terminal library of the IED and an SCD file to be verified, and setting the equipment type, the voltage class, the interval type, the wiring mode and the branch attribute of the IED in the SCD file to be verified;
and 5: and comparing the virtual terminal connection relation of the IED in the SCD file to be verified with the virtual terminal connection relation in the typical IED template, and outputting a virtual terminal verification result. As shown in fig. 2, the specific verification process is as follows:
step 501: matching a terminal library of the IED and a typical IED template in a substation template according to the equipment type, the voltage level, the interval type and the wiring mode of the IED in the SCD file to be verified;
step 502: extracting the association virtual terminal connection relation of the IED in the SCD file to be verified, matching each virtual terminal in the association virtual terminal connection relation of the IED in the SCD file to be verified with the terminal dictionary, and modifying and replacing each virtual terminal description in the association virtual terminal connection relation with the standard virtual terminal description in the matched terminal dictionary; the description of each virtual terminal in the association virtual terminal connection relation of the IED in the SCD file to be verified is standardized, and because different manufacturers possibly slightly differ the description of the same virtual terminal, the description of each virtual terminal in the association virtual terminal connection relation is modified and replaced by the standard virtual terminal description in the matched terminal dictionary, so that the description of each virtual terminal in the association virtual terminal connection relation of the IED in each SCD file to be verified is standardized, and later verification is facilitated.
Step 503: traversing the association virtual terminal connection relation of the IED in the SCD file to be verified, wherein if the transmitting terminal and the receiving terminal of the virtual terminal connection relation of the IED in the SCD file to be verified are not matched with the terminal dictionary, the virtual terminal connection relation is no verification; for example, in the virtual terminal connection relationship of the IED in the SCD file to be verified, the transmitting terminal a is connected to the receiving terminal a, but the transmitting terminal a and the receiving terminal a are not found in the terminal dictionary, which indicates that the two virtual terminals are not present in the terminal library of the IED at all, so the virtual terminal connection relationship is not verified.
If one of a transmitting terminal or a receiving terminal of the virtual terminal connection relation of the IED in the SCD file to be verified is matched with the terminal dictionary, the transmitting terminal description of the virtual terminal connection relation in the typical IED template is matched according to the transmitting terminal of the virtual terminal connection relation of the IED in the SCD file to be verified, the receiving terminal description of the virtual terminal connection relation of the IED in the SCD file to be verified is matched with the receiving terminal description of the virtual terminal connection relation in the typical IED template, matching is successful, the virtual terminal connection relation is dictionary-free, and matching is unsuccessful, so that attention is needed.
For example, in the virtual terminal connection relationship of the IED in the SCD file to be verified, the transmitting terminal a is connected to the receiving terminal a, and the transmitting terminal a found in the terminal dictionary does not find the receiving terminal a, which indicates that one of the transmitting terminal and the receiving terminal of the virtual terminal connection relationship of the IED in the SCD file to be verified matches the terminal dictionary, at this time, the transmitting terminal a of the virtual terminal connection relationship of the IED in the SCD file to be verified matches the transmitting terminal description of the virtual terminal connection relationship in the typical IED template according to the transmitting terminal a of the virtual terminal connection relationship of the IED in the SCD file to be verified, and the matching is successful, the virtual terminal connection relationship is dictionary-free, so even if the matching is successful, the receiving terminal does not exist in the terminal dictionary, so that the matching is called dictionary, and the matching is unsuccessful, so that attention is required, which indicates that the attention is manually paid.
If the transmitting terminal or the receiving terminal of the virtual terminal connection relation of the IED in the SCD file to be verified can be matched with the terminal dictionary, the transmitting terminal description of the virtual terminal connection relation in the typical IED template is matched according to the transmitting terminal of the virtual terminal connection relation of the IED in the SCD file to be verified, the receiving terminal description of the virtual terminal connection relation of the IED in the SCD file to be verified is matched with the receiving terminal description of the virtual terminal connection relation in the typical IED template, and the matching is successful, the virtual terminal connection relation is normal verification; and the matching is failed, if one of the sending terminal and the receiving terminal is successfully matched, the virtual terminal connection relation is misconnection, and if the matching is not successful, the virtual terminal connection relation is multi-connection.
For example, the virtual terminal connection relationship of the typical IED template includes a hop a connection hop a, a hop B connection hop B, and a hop C connection hop C, the virtual terminal connection relationship of the IED in the SCD file to be verified is the hop a connection hop a, and both the sending terminal (hop a) and the receiving terminal (hop a) can be found in the terminal dictionary, so that both terminals can be matched with the terminal dictionary, the sending terminal description of the virtual terminal connection relationship in the typical IED template is matched according to the sending terminal of the virtual terminal connection relationship of the IED in the SCD file to be verified, the receiving terminal description of the virtual terminal connection relationship in the typical IED template is matched according to the receiving terminal of the virtual terminal connection relationship of the IED in the SCD file to be verified, and the matching is successful, and the virtual terminal connection relationship is normal verification. The virtual terminal connection relation of the IED in the SCD file to be verified is hop A connection hop C, the sending terminal (hop A) and the receiving terminal (hop C) can be found in the terminal dictionary, so that the sending terminal (hop A) and the receiving terminal (hop C) can be matched with the terminal dictionary, but only one of the IED can be matched when the virtual terminal of the IED in the SCD file to be verified is matched with the terminal in the virtual terminal connection relation in the typical IED template, two of the IED in the SCD file to be verified cannot be matched simultaneously, and the IED is judged to be misconnected. When the virtual terminal connection relationship of the IED in the SCD file to be verified is that the hop E is connected with the hop F, although the hop E and the hop F can be found in the terminal dictionary, and can be matched with the terminal dictionary, when the virtual terminal of the IED in the SCD file to be verified is matched with the terminal in the virtual terminal connection relationship in the typical IED template, only the hop A is connected with the hop A, the hop B is connected with the hop B, the hop C is connected with the hop C, and the hop E is not connected with the hop F, so that the hop E is not matched, and the hop F is also not matched, and the IED is in multi-connection.
If the IED in the SCD file to be verified is bus protection, the regular expression of the mother-difference branch is matched according to the branch attribute of the matched typical IED template, the receiving terminal description of the virtual terminal connection relation of the IED in the SCD file to be verified is modified according to the regular expression of the mother-difference branch, if the matching is successful, normal verification is performed, because the virtual terminal in the SCD file to be verified cannot be described by the standard virtual terminal description under the condition of bus protection, the description of the regular expression needs to be added, and therefore when the virtual terminal of the bus protection is matched, the regular expression of the mother-difference branch can be directly corresponding to the virtual terminal description of the mother-difference branch according to the virtual terminal description; if the typical IED template matched with the IED in the SCD file to be verified is bus protection, the regular expression of the mother-difference branch is matched according to the branch attribute of the IED in the SCD file to be verified, the sending terminal description of the virtual terminal connection relation of the IED in the SCD file to be verified is modified according to the regular expression of the mother-difference branch, and if the matching is successful, normal verification is performed. In the foregoing, it has been described that in practical application, bus protection has 24 branches, and any branch can be connected when connecting a line, for example, a branch six is stored in a typical IED template, and an IED (bus protection) to be verified is connected to a branch seven, which are not necessarily matched when matching, but cannot be directly determined as a matching error, because a branch seven is theoretically possible, although a branch seven is not connected in a typical IED template, a regular expression is set, so that a correct determination can be made in this case. 24 branches, and establishing regular expressions corresponding to the 24 branches. In this way, the misjudgment of the system in the special condition of bus protection is avoided. The regular expression is set according to the actual branch condition, which is not described herein.
Establishing a special terminal set for virtual terminals with the same meaning in a terminal library of the IED, and when matching fails in the process that a transmitting terminal of the virtual terminal connection relation of the IED in the SCD file to be verified is matched with a transmitting terminal description of the virtual terminal connection relation in a typical IED template, if the transmitting terminal of the virtual terminal connection relation of the IED in the SCD file to be verified and the transmitting terminal description of the virtual terminal connection relation in the IED template are both in the same special terminal set, determining that matching is successful; in the process that the receiving terminal of the virtual terminal connection relation of the IED in the SCD file to be verified is matched with the receiving terminal description of the virtual terminal connection relation in the typical IED template, when matching fails, if the receiving terminal of the virtual terminal connection relation of the IED in the SCD file to be verified and the receiving terminal description of the virtual terminal connection relation in the IED template are both in the same special terminal set, the matching is still determined to be successful.
For example, descriptions of terminals of a circuit breaker reclosing 1 of B, a circuit breaker reclosing 2 of B, and a circuit breaker reclosing 3 of B are respectively established in a terminal library, the circuit breaker reclosing 1 of B, the circuit breaker reclosing 2 of B, or the circuit breaker reclosing 3 of B are all aligned during wiring, but in practical application, when a typical IED template is stored, only one typical IED template can be connected to one of the templates, for example, the circuit breaker reclosing 1 of B is connected to the typical IED template, but the circuit breaker reclosing 2 of B is connected to the virtual terminal connection relationship of the IED in the SCD file to be verified, according to the logic described above, the situation will be determined incorrectly because the circuit breaker reclosing 2 of B is connected to the virtual terminal connection relationship of the IED in the SCD file to be verified and the circuit breaker reclosing 1 of B is connected to the virtual terminal connection relationship of the IED in the SCD file to be verified, but actually is not wrong, therefore, for the situation, a special terminal set is established, and the reclosure 1 of the breaker with the virtual terminal B, the reclosure 2 of the breaker with the virtual terminal B, and the reclosure 3 of the breaker with the virtual terminal B with the same meaning are all placed in the special terminal set, so that when matching fails in the process that the sending terminal of the virtual terminal connection relationship of the IED in the SCD file to be verified matches the sending terminal description of the virtual terminal connection relationship in the typical IED template, the reclosure 2 of the sending terminal B with the virtual terminal connection relationship of the IED in the SCD file to be verified and the reclosure 1 of the sending terminal B with the virtual terminal connection relationship in the IED template are both in the same special terminal set, and the matching is still determined to be successful.
According to the technical scheme, the typical IED template is established, the voltage level and the wiring mode of the transformer substation are set, the typical IED templates of different types are selected to generate the transformer substation template, the virtual terminal connection relation of the IED in the SCD file to be verified is compared with the virtual terminal connection relation in the typical IED template, the virtual terminal verification result is output, the verification of the virtual terminal of the intelligent transformer substation is achieved, the correctness and the integrity of the virtual terminal wiring are automatically judged, and therefore the manual inspection period is greatly shortened and the working efficiency is improved.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A virtual terminal checking method for an intelligent substation is characterized by comprising the following steps:
step 1: according to virtual terminals of relay protection specifications, terminal libraries of various IEDs of different equipment types, different voltage classes, different interval types and different wiring modes are established;
step 2: establishing various typical IED templates of different equipment types, different voltage classes, different interval types, different wiring modes and different associated virtual terminal connection relations;
and step 3: setting the voltage grade and the wiring mode of the transformer substation, and selecting typical IED templates of different types to generate transformer substation templates;
and 4, step 4: importing a substation template, a terminal library of the IED and an SCD file to be verified, and setting the equipment type, the voltage class, the interval type, the wiring mode and the branch attribute of the IED in the SCD file to be verified;
and 5: and comparing the virtual terminal connection relation of the IED in the SCD file to be verified with the virtual terminal connection relation in the typical IED template, and outputting a virtual terminal verification result.
2. The method according to claim 1, wherein the virtual terminals of the terminal base of the IED include an SV transmitting terminal, an SV receiving terminal, a GOOSE transmitting terminal and a GOOSE receiving terminal.
3. The method for checking the virtual terminals of the intelligent substation according to claim 1, wherein the terminal library of the IED includes a plurality of virtual terminals of different manufacturers, versions and models.
4. The method according to claim 1, wherein a regular expression of a bus differential branch is established for an IED for bus protection in a terminal library of the IED, and bus protection refers to that a partition type is a bus and a device type is protection.
5. The method for checking the virtual terminal of the intelligent substation according to claim 4, wherein the step 1 further comprises: each virtual terminal in a terminal library of the IED is integrated into a terminal dictionary according to the virtual terminal description of the virtual terminal and the standard virtual terminal description of the virtual terminal of different manufacturers, and the terminal dictionary comprises SV sending terminals, SV receiving terminals, GOOSE sending terminals and standard virtual terminal descriptions of the GOOSE receiving terminals.
6. The method for checking the virtual terminal of the intelligent substation according to claim 1, wherein the building process of the typical IED template in the step 2 is as follows:
matching a terminal library of the IED according to the device type, the voltage class, the interval type and the wiring mode of the imported IED; extracting the association virtual terminal connection relation of the imported IED according to the matching result; and after the virtual terminal of the imported IED and the virtual terminal of the corresponding manufacturer, version and model in the terminal library of the IED are identified in the matching process, the virtual terminal description of the connection relation of the imported IED and the virtual terminal description of the association virtual terminal is modified and replaced by the corresponding standard virtual terminal description in the terminal library of the IED.
7. The method for checking the virtual terminal of the intelligent substation according to claim 1, wherein the generating process of the substation template in the step 3 is as follows:
and setting the voltage grade and the wiring mode of the transformer substation, and selecting a typical IED template with the same voltage grade or lower than the voltage grade of the transformer substation according to the voltage grade and the wiring mode of the transformer substation to generate a transformer substation template according to the wiring mode of the typical IED template.
8. The method for checking the virtual terminal of the intelligent substation according to claim 5, wherein the step 5 comprises:
step 501: matching a terminal library of the IED and a typical IED template in a substation template according to the equipment type, the voltage level, the interval type and the wiring mode of the IED in the SCD file to be verified;
step 502: extracting the association virtual terminal connection relation of the IED in the SCD file to be verified, matching each virtual terminal in the association virtual terminal connection relation of the IED in the SCD file to be verified with the terminal dictionary, and modifying and replacing each virtual terminal description in the association virtual terminal connection relation with the standard virtual terminal description in the matched terminal dictionary;
step 503: traversing the association virtual terminal connection relation of the IED in the SCD file to be verified, wherein if the transmitting terminal and the receiving terminal of the virtual terminal connection relation of the IED in the SCD file to be verified are not matched with the terminal dictionary, the virtual terminal connection relation is no verification;
if one of a transmitting terminal or a receiving terminal of the virtual terminal connection relation of the IED in the SCD file to be verified is matched with the terminal dictionary, matching the transmitting terminal description of the virtual terminal connection relation in the typical IED template according to the transmitting terminal of the virtual terminal connection relation of the IED in the SCD file to be verified, matching the receiving terminal description of the virtual terminal connection relation of the IED in the SCD file to be verified with the receiving terminal description of the virtual terminal connection relation in the typical IED template successfully, wherein the virtual terminal connection relation is dictionary-free, and the matching is not successful, so that attention is needed;
if the transmitting terminal or the receiving terminal of the virtual terminal connection relation of the IED in the SCD file to be verified can be matched with the terminal dictionary, the transmitting terminal description of the virtual terminal connection relation in the typical IED template is matched according to the transmitting terminal of the virtual terminal connection relation of the IED in the SCD file to be verified, the receiving terminal description of the virtual terminal connection relation of the IED in the SCD file to be verified is matched with the receiving terminal description of the virtual terminal connection relation in the typical IED template, and the matching is successful, the virtual terminal connection relation is normal verification; and the matching is failed, if one of the sending terminal and the receiving terminal is successfully matched, the virtual terminal connection relation is misconnection, and if the matching is not successful, the virtual terminal connection relation is multi-connection.
9. The method for checking the virtual terminal of the intelligent substation according to claim 8, wherein the step 303 further comprises:
if the IED in the SCD file to be verified is bus protection, matching the regular expression of the mother-difference branch according to the branch attribute of the matched typical IED template, modifying the receiving terminal description of the virtual terminal connection relation of the IED in the SCD file to be verified according to the regular expression of the mother-difference branch, and if the matching is successful, performing normal verification; if the typical IED template matched with the IED in the SCD file to be verified is bus protection, the regular expression of the mother-difference branch is matched according to the branch attribute of the IED in the SCD file to be verified, the sending terminal description of the virtual terminal connection relation of the IED in the SCD file to be verified is modified according to the regular expression of the mother-difference branch, and if the matching is successful, normal verification is performed.
10. The method for checking the virtual terminal of the intelligent substation according to claim 9, wherein the step 303 further comprises:
establishing a special terminal set for virtual terminals with the same meaning in a terminal library of the IED, and when matching fails in the process that a transmitting terminal of the virtual terminal connection relation of the IED in the SCD file to be verified is matched with a transmitting terminal description of the virtual terminal connection relation in a typical IED template, if the transmitting terminal of the virtual terminal connection relation of the IED in the SCD file to be verified and the transmitting terminal description of the virtual terminal connection relation in the IED template are both in the same special terminal set, determining that matching is successful; in the process that the receiving terminal of the virtual terminal connection relation of the IED in the SCD file to be verified is matched with the receiving terminal description of the virtual terminal connection relation in the typical IED template, when matching fails, if the receiving terminal of the virtual terminal connection relation of the IED in the SCD file to be verified and the receiving terminal description of the virtual terminal connection relation in the IED template are both in the same special terminal set, the matching is still determined to be successful.
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