CN113364126A - Automatic configuration method for sampling homology comparison function of intelligent substation - Google Patents
Automatic configuration method for sampling homology comparison function of intelligent substation Download PDFInfo
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- CN113364126A CN113364126A CN202110681256.3A CN202110681256A CN113364126A CN 113364126 A CN113364126 A CN 113364126A CN 202110681256 A CN202110681256 A CN 202110681256A CN 113364126 A CN113364126 A CN 113364126A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
- H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
Abstract
The invention relates to an automatic configuration method for a sampling homology comparison function of an intelligent substation. For single-interval equipment, the same logic node and the same instance number are adopted by the analog quantity sampling signal of the station control layer of the interval layer equipment and the corresponding SV input virtual terminal of the process layer; for the trans-interval equipment, the same logic node is adopted by the station control layer analog quantity sampling signal of the interval layer equipment and the corresponding process layer SV input virtual terminal, and the same logic node prefix is used; selecting a primary interval, traversing SV virtual terminal connection relations, establishing a corresponding relation of related secondary equipment station control layer analog quantity sampling signals taking the interval as the same sampling source, and completing homologous comparison configuration of the interval; if there are secondary devices in redundant configuration in this interval, a homologous comparison configuration between the redundant secondary devices should also be established. The invention can automatically establish sampling homology comparison configuration of total station analog quantity sampling, provides powerful support for the sampling homology comparison function of the intelligent substation, and improves the operation and maintenance efficiency and reliability of the intelligent substation.
Description
Technical Field
The invention relates to the field of intelligent substations, in particular to an automatic configuration method for a sampling homology comparison function of an intelligent substation.
Background
The analog quantity sampling loop is used as an important loop of a substation protection control system and is a basic data source for power system relay protection, the abnormality of the analog quantity loop directly affects all protection control devices based on the analog quantity data, and particularly for cross-interval protection devices with a differential protection function, such as bus protection devices, the abnormality of the analog quantity at any sampling interval causes the failure of the bus differential protection function, and the operation safety of the substation is seriously affected.
With the development of the intelligent substation technology, new challenges are brought to substation operation and maintenance by the optical cable and sampling signal digitization of the secondary loop, but new opportunities are brought to the operation and maintenance of the intelligent substation by the digitization of the loop.
The importance of an analog quantity sampling loop is considered, based on the digitization of the sampling value of the intelligent substation, the sampling values of different secondary devices of the same sampling source can be compared in real time, so that devices with abnormal sampling and corresponding loops can be found as early as possible, operation and maintenance personnel are reminded to check and recover related devices and loops with abnormal sampling, accident enlargement and seriousness are avoided, and the concept and the significance of sampling homologous comparison are achieved.
In the prior art, for the function of sampling homology comparison, most of the functions are carried out on the basis of completing homology sampling configuration, in fact, workload of homology configuration is not negligible, and the larger the scale of the transformer substation configuration is, the larger the workload of the transformer substation configuration is, on one hand, a longer manual configuration period is needed, and on the other hand, the configuration result is not very reliable, so that a method capable of automatically completing homology sampling configuration is urgently needed, a reliable homology sampling configuration result is provided, and powerful support is provided for the sampling homology comparison function of an intelligent transformer substation.
Disclosure of Invention
The invention aims to solve the steps of the corresponding technology, provides an automatic configuration method for a sampling homologous comparison function of an intelligent substation, reduces the workload of sampling homologous comparison configuration, and improves the automation level and reliability of sampling homologous configuration.
In order to achieve the purpose, the technical scheme of the invention is as follows: an automatic configuration method for a sampling homology comparison function of an intelligent substation is used for performing correlation modeling on a process level SV input virtual terminal of secondary equipment and a station control level analog quantity signal of the secondary equipment.
In an embodiment of the present invention, a sampling homology comparison configuration of a corresponding interval secondary device is established according to a connection relationship of the interval SV virtual terminals.
In an embodiment of the present invention, the associated modeling means that the station control layer analog quantity sampling signal of the single-interval secondary device and the corresponding process layer SV input virtual terminal thereof use the same logic node and the same instance number.
In an embodiment of the present invention, the correlation modeling means that the station control layer analog quantity sampling signal of the trans-interval secondary device and the corresponding process layer SV input virtual terminal adopt the same logic node and use the same logic node prefix.
In an embodiment of the present invention, the sampling homology comparison configuration refers to establishing sampling homology comparison configuration between single sets of secondary devices for the single sets of configured secondary devices; and for the secondary equipment with redundant configuration, establishing sampling homologous comparison configuration among the redundant secondary equipment.
In an embodiment of the present invention, the method specifically includes the following steps:
s1, performing correlation modeling on the analog quantity sampling signals of the single-interval equipment; for single-interval equipment, the same logic node and the same instance number are adopted by the analog quantity sampling signal of the station control layer of the interval layer equipment and the corresponding SV input virtual terminal of the process layer;
s2, modeling by cross-interval equipment analog quantity sampling signal correlation; for the trans-interval equipment, the same logic node is adopted by the station control layer analog quantity sampling signal of the interval layer equipment and the corresponding process layer SV input virtual terminal, and the same logic node prefix is used;
s3, selecting one of the primary intervals, traversing the SV virtual terminal connection relation, establishing the corresponding relation of the analog quantity sampling signals of the station control layer of the related secondary equipment taking the interval as the same sampling source, and completing the homologous comparison configuration of the interval;
s4, judging whether the corresponding interval has secondary equipment with functional redundancy configuration, if so, establishing homologous comparison configuration for the redundant equipment according to the method of the step S3, and executing S5; otherwise, executing S6;
and S5, establishing homologous comparison configuration among secondary equipment with redundant configuration for the same interval, and executing S6.
And S6, repeating the step S3 to complete the whole-station secondary equipment sampling homologous comparison configuration.
Compared with the prior art, the invention has the following beneficial effects: the method has the obvious advantages that the sampling homologous comparison configuration of the secondary equipment can be established in an automatic mode, the workload of the sampling homologous comparison configuration is greatly reduced, and the automation level and the reliability of the sampling homologous configuration are improved.
Drawings
FIG. 1 is a flow chart of a method implementation of the present invention;
FIG. 2 is a schematic diagram of a line protection and bus protection sampling homologous loop of an intelligent substation;
FIG. 3 is a schematic diagram of the results of a homology alignment configuration at a certain interval;
fig. 4 is a schematic diagram illustrating a configuration result of homologous comparison between two sets of redundantly configured secondary devices.
Detailed Description
The technical scheme of the invention is specifically explained below with reference to the accompanying drawings.
The invention relates to an automatic configuration method for a sampling homology comparison function of an intelligent substation, which is used for performing correlation modeling on a process level SV input virtual terminal of secondary equipment and a station control level analog quantity signal thereof.
The following is a specific implementation process of the present invention.
As can be seen from fig. 1, the embodiment of the present invention includes the following steps:
s1: and performing correlation modeling on the analog quantity sampling signals of the single-interval equipment.
For single-interval equipment, the analog quantity sampling signals of the station control layer of the interval layer equipment and the corresponding SV input virtual terminals of the process layer adopt the same logic nodes and the same instance numbers.
Taking the line protection device shown in fig. 2 as an example, the SV signal input/output relationship is: the merging unit SV sends a virtual terminal- > the line protection device SV inputs the virtual terminal- > the station control layer analog quantity sampling signal. Therefore, the SV input virtual terminal of the line protection device can be modeled as PISV/MMXU1.DO.DA (. DO.DA can maintain the conventional practice and has no influence on the method described herein, so the DO.DA is hidden below), and the associated station control layer analog quantity sampling signal is modeled as PROT/MMXU 1. The incidence relation between the process layer SV input and the station control layer analog quantity output can be determined according to the logic node identification MMXU1
In the same way, the SV input virtual terminal for interval measurement and control is modeled as PISV/MMXU1, and the associated station control layer analog quantity sampling signal is modeled as MEAS/MMXU 1.
S2: modeling is performed by correlating analog sampled signals across the interval device.
For the trans-interval equipment, the analog quantity sampling signals of the station control layer of the interval layer equipment and the corresponding SV input virtual terminals of the process layer adopt the same logic nodes and use the same logic node prefixes.
Bus protection is typical cross-interval protection equipment, the SV signal input-output relationship of any interval is the same as that of single-interval protection, and the signal relationship is as follows: and a certain interval merging unit SV sends a virtual terminal- > bus protection device, and the virtual terminal- > station control layer analog quantity sampling signal is input into the interval SV.
Take the bus protection device branch 1 and the bus protection device branch 2 in fig. 2 as an example. An SV input virtual terminal of the branch 1 is modeled as PISV/Bay1MMXU1, and an associated station control layer analog quantity sampling signal is modeled as PROT/Bay1MMXU 1; the SV input virtual terminal for arm 2 is modeled as PISV/Bay2MMXU1, and the associated station level analog sampled signal is modeled as PROT/Bay2MMXU 1. And determining the incidence relation between the process layer SV input and the station control layer analog quantity output of the branch 1 according to the logic node identification Bay1MMXU, wherein the same modeling mode is adopted in other intervals.
S3: selecting a certain primary interval, traversing SV virtual terminal connection relation, establishing corresponding relation of related secondary equipment station control layer analog quantity sampling signals taking the interval as the same sampling source, and completing homologous comparison configuration of the interval;
taking fig. 2 as an example, the line protection, the bus protection, and the interval measurement and control all receive analog sampling information from the merging unit 1, that is, the merging unit 1 is the same sampling source of the line protection, the bus protection branch 1, and the interval measurement and control, and the station control layer analog signal of the line protection, the station control layer analog signal of the bus protection branch 1, and the station control layer analog signal of the interval measurement and control can be sampled and compared with each other.
According to the connection relationship of the virtual terminals of the merging unit SV, in combination with steps S2 and S3, the station control layer analog quantity signal PROT/MMXU1 for line protection, the station control layer signal PROT/Bay1MMXU1 for the bus protection branch 1, and the station control layer signal MEAS/MMXU1 for the interval test can be automatically matched, so as to form the homologous comparison configuration result shown in fig. 3.
If the protection equipment adopts double sets of redundant configuration, each redundant equipment also completes the homologous comparison configuration according to the step.
S4: judging whether the interval has secondary equipment with functional redundancy configuration, if so, establishing homologous comparison configuration on the redundant equipment according to the method of the step S3 and executing S5; otherwise, carrying out the homologous alignment configuration at the next interval.
S5: and establishing homologous comparison configuration between the secondary devices in redundant configuration for the same interval. And carrying out homologous comparison on analog quantity samples of the secondary equipment with the same sampling source between the secondary equipment with the redundant configuration. Taking a typical relay protection device as an example, if protection a and protection B are protection devices configured redundantly at the same interval, A, B sets of analog quantity samples for protection should be subjected to homologous comparison configuration.
Taking the branch 1 in fig. 2 as an example, the analog quantity signal models of the two sets of bus protection devices both include key information Bay1MMXU, and the analog quantity signals of the branch 1 of the two sets of bus protection devices can be automatically associated according to the Bay1MMXU, so that the analog quantity signals of the line protection and the main transformer protection of the redundant configuration are automatically associated, and the homologous comparison configuration between the secondary devices of the redundant configuration is realized. Fig. 4 is a schematic diagram showing a homology comparison among the line protection, the bus protection and the main transformer protection of the redundant configuration.
S6: and step S3 is repeated to complete the whole-station secondary equipment sampling homologous comparison configuration.
By adopting the method, the sampling homology comparison configuration of the total-station analog quantity sampling can be automatically established, a powerful support is provided for the sampling homology comparison function of the intelligent substation, and the operation and maintenance efficiency and reliability of the intelligent substation are improved.
The above are preferred embodiments of the present invention, and all changes made according to the technical scheme of the present invention that produce functional effects do not exceed the scope of the technical scheme of the present invention belong to the protection scope of the present invention.
Claims (6)
1. An automatic configuration method for a sampling homology comparison function of an intelligent substation is characterized in that correlation modeling is carried out on a process level SV input virtual terminal of secondary equipment and a station control level analog quantity signal of the secondary equipment.
2. The automatic configuration method for the sampling homology comparison function of the intelligent substation according to claim 1, wherein sampling homology comparison configuration of corresponding interval secondary equipment is established according to the connection relationship of interval SV virtual terminals.
3. The automatic configuration method for the sampling homology comparison function of the intelligent substation according to claim 1, wherein the correlation modeling means that the station control layer analog quantity sampling signals of the single-interval secondary equipment and the corresponding process layer SV input virtual terminals thereof adopt the same logic nodes and the same instance numbers.
4. The automatic configuration method for the sampling homology comparison function of the intelligent substation according to claim 1, wherein the correlation modeling means that the station control layer analog quantity sampling signals of the trans-interval secondary equipment and the corresponding process layer SV input virtual terminals thereof adopt the same logical nodes and use the same logical node prefixes.
5. The automatic configuration method for the sampling homology comparison function of the intelligent substation according to claim 2, wherein the sampling homology comparison configuration refers to establishing sampling homology comparison configuration among single sets of secondary equipment for the single sets of configured secondary equipment; and for the secondary equipment with redundant configuration, establishing sampling homologous comparison configuration among the redundant secondary equipment.
6. The automatic configuration method for the sampling homology comparison function of the intelligent substation according to claim 1 or 2, which is characterized by comprising the following specific implementation steps:
s1, performing correlation modeling on the analog quantity sampling signals of the single-interval equipment; for single-interval equipment, the same logic node and the same instance number are adopted by the analog quantity sampling signal of the station control layer of the interval layer equipment and the corresponding SV input virtual terminal of the process layer;
s2, modeling by cross-interval equipment analog quantity sampling signal correlation; for the trans-interval equipment, the same logic node is adopted by the station control layer analog quantity sampling signal of the interval layer equipment and the corresponding process layer SV input virtual terminal, and the same logic node prefix is used;
s3, selecting one of the primary intervals, traversing the SV virtual terminal connection relation, establishing the corresponding relation of the analog quantity sampling signals of the station control layer of the related secondary equipment taking the interval as the same sampling source, and completing the homologous comparison configuration of the interval;
s4, judging whether the corresponding interval has secondary equipment with functional redundancy configuration, if so, establishing homologous comparison configuration for the redundant equipment according to the method of the step S3, and executing S5; otherwise, executing S6;
s5, establishing homologous comparison configuration between the secondary devices with redundant configuration for the same interval, and executing S6;
and S6, repeating the step S3 to complete the whole-station secondary equipment sampling homologous comparison configuration.
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