CN116488108A - Protection constant value calculation method, system, medium and equipment based on general model - Google Patents
Protection constant value calculation method, system, medium and equipment based on general model Download PDFInfo
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- CN116488108A CN116488108A CN202310379537.2A CN202310379537A CN116488108A CN 116488108 A CN116488108 A CN 116488108A CN 202310379537 A CN202310379537 A CN 202310379537A CN 116488108 A CN116488108 A CN 116488108A
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- 238000004364 calculation method Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000004590 computer program Methods 0.000 claims description 9
- 238000004422 calculation algorithm Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 238000012986 modification Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/006—Calibration or setting of parameters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0092—Details of emergency protective circuit arrangements concerning the data processing means, e.g. expert systems, neural networks
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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
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
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- Engineering & Computer Science (AREA)
- Artificial Intelligence (AREA)
- Evolutionary Computation (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention belongs to the field of protection constant value calculation, and provides a protection constant value calculation method, a system, a medium and equipment based on a general model. The protection constant value calculation method based on the general model comprises the steps of obtaining relevant data of a power grid; calculating a fixed value of the segment protection scheme based on the general model and the acquired power grid related data; the universal model comprises a setting data calling setting principle and a setting matching scheme library; the process of calculating the fixed value of the segment protection scheme is as follows: calling a tuning principle and a tuning matching scheme library based on tuning data, and generating a matching type instance by combining the acquired power grid related data, so as to determine the position of a generating branch and obtain a section which can be matched on the generating branch; and generating a power grid coordination relation result and a fault calculation result based on the generated branch positions and the segments which can be matched with the generated branch positions, determining a power grid fixed value range, and further calculating a fixed value of a segment protection scheme.
Description
Technical Field
The invention belongs to the field of protection constant value calculation, and particularly relates to a protection constant value calculation method, system, medium and device based on a general model.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The relay protection device is a protection device for ensuring the safe and stable operation of the power system, and can rapidly and selectively cut off faults when the system has faults such as short circuit and the like, thereby ensuring the fault-free operation of equipment. When the power supply system fails, the current and the voltage can be increased and reduced, and the current and the voltage phase can be changed, and the difference between the parameters in the failure and the normal operation is utilized in relay protection, so that relay protection with different principles and types is formed, including distance protection, zero sequence protection, overcurrent protection and the like. The principle fixed value calculation needs to carry out fault analysis, the configuration relay protection principle algorithm considers that the fault point positions and calculation modes of relay protection of different principles and types are generally different, and therefore the differences of the power grid topology, the operation mode, the setting principle, fault information, a combination formula and the like need to be comprehensively considered. The inventor discovers that the existing relay protection principle algorithm has the problems of high maintenance and modification cost and a set period length.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a protection fixed value calculation method, a system, a medium and equipment based on a general model, which can automatically analyze a general model algorithm based on algorithm configuration, automatically execute setting, reduce maintenance and modification of a relay protection principle algorithm, and shorten a setting period.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the first aspect of the invention provides a protection constant value calculation method based on a general model.
A protection constant value calculation method based on a general model, comprising:
acquiring power grid related data;
calculating a fixed value of the segment protection scheme based on the general model and the acquired power grid related data;
the universal model comprises a setting data calling setting principle and a setting matching scheme library; the process of calculating the fixed value of the segment protection scheme is as follows:
calling a tuning principle and a tuning matching scheme library based on tuning data, and generating a matching type instance by combining the acquired power grid related data, so as to determine the position of a generating branch and obtain a section which can be matched on the generating branch;
and generating a power grid coordination relation result and a fault calculation result based on the generated branch positions and the segments which can be matched with the generated branch positions, determining a power grid fixed value range, and further calculating a fixed value of a segment protection scheme.
As one embodiment, the power grid related data includes primary modeling topology data, plant mode, area, and area mode data.
As one embodiment, the generic model further comprises a tuning configuration principle combined with the usage habit of the user; the setting configuration combined with the use habit of the user comprises setting calculation scenes, setting value items corresponding to each protection type configuration, setting principle configuration of each observation point, and defining three-level branch positions and branch path configuration setting principles according to the fault point relative to the point position of the setting equipment.
As an embodiment, the tuning matching scheme library includes a matching fixed value calculation method library, fault case definition and automatic analysis quantity.
A second aspect of the present invention provides a protection value calculation system based on a generic model.
A protection value computing system based on a generic model, comprising:
the power grid data acquisition module is used for acquiring power grid related data;
the protection fixed value calculation module is used for calculating the fixed value of the section protection scheme based on the general model and the acquired power grid related data;
the universal model comprises a setting data calling setting principle and a setting matching scheme library; the process of calculating the fixed value of the segment protection scheme is as follows:
calling a tuning principle and a tuning matching scheme library based on tuning data, and generating a matching type instance by combining the acquired power grid related data, so as to determine the position of a generating branch and obtain a section which can be matched on the generating branch;
and generating a power grid coordination relation result and a fault calculation result based on the generated branch positions and the segments which can be matched with the generated branch positions, determining a power grid fixed value range, and further calculating a fixed value of a segment protection scheme.
As one embodiment, the power grid related data includes primary modeling topology data, plant mode, area, and area mode data.
As one embodiment, the generic model further comprises a tuning configuration principle combined with the usage habit of the user; the setting configuration combined with the use habit of the user comprises setting calculation scenes, setting value items corresponding to each protection type configuration, setting principle configuration of each observation point, and defining three-level branch positions and branch path configuration setting principles according to the fault point relative to the point position of the setting equipment.
As an embodiment, the tuning matching scheme library includes a matching fixed value calculation method library, fault case definition and automatic analysis quantity.
A third aspect of the present invention provides a computer-readable storage medium.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, implements the steps in a general model-based protection value calculation method as described above.
A fourth aspect of the invention provides an electronic device.
An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps in the general model-based protection value calculation method as described above when the program is executed.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a protection fixed value calculation method and a system based on a general model, which solve the problems of high maintenance and modification cost and a set period length of the traditional relay protection principle algorithm, comprehensively consider the differences of power grid topology, operation modes, a set principle, fault information and the like to form the general model, automatically analyze the general model algorithm based on algorithm configuration, automatically execute the set, reduce the maintenance and modification of the relay protection principle algorithm, and shorten the set period.
Additional aspects of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a schematic diagram of a protection value calculation method based on a general model according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a tuning recipe library according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the type of coordination relationship according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a definition setting data call setting principle according to an embodiment of the present invention.
Detailed Description
The invention will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
Example 1
Referring to fig. 1, the present embodiment provides a protection constant value calculating method based on a general model, which specifically includes the following steps:
step 1: and acquiring power grid related data.
The power grid related data comprise primary modeling topology data, plant mode data, area mode data and area mode data.
Step 2: and calculating a fixed value of the segment protection scheme based on the general model and the acquired power grid related data.
The universal model comprises a setting data calling setting principle and a setting matching scheme library; the process of calculating the fixed value of the segment protection scheme is as follows:
calling a tuning principle and a tuning matching scheme library based on tuning data, and generating a matching type instance by combining the acquired power grid related data, so as to determine the position of a generating branch and obtain a section which can be matched on the generating branch;
and generating a power grid coordination relation result and a fault calculation result based on the generated branch positions and the segments which can be matched with the generated branch positions, determining a power grid fixed value range, and further calculating a fixed value of a segment protection scheme.
In this embodiment, first, the currently known principle level protection setting calculation principle is subjected to inductive statistical analysis, and the later expansion is considered, so that the principle level protection calculation method calling relationship is abstracted out, the following algorithm configuration model is extracted, and the setting data calling setting principle is obtained as shown in fig. 4.
1) Scene: the concept of the scene is expanded, and classification is performed according to the fact that the same type of equipment is different in setting calculation principles at different positions of a power grid.
2) Observation point characteristics: classification is based on device type, voltage class, etc.
3) Setting section: defining the name of the setting segment, the in-range value principle, the out-of-range value principle and the like
4) Sensitivity requirements: defining a lower limit of the length range, an upper limit of the length range, a sensitivity value, etc
5) Tuning principle example (verification principle example): defining principle name, fixed value and value direction, priority setting and the like
6) Principle: defining a principle name, a setting value formula and formula description, a setting time formula and formula description, fault definition and a formula analysis amount, matching a setting value position, matching a setting principle, matching a setting section, checking whether the principle is verified and the like.
7) Fault definition: defining starting position, fault point position, fault type, wheel break configuration and wheel break quantity setting
8) Analysis amount of reference: defining a reference name, an analysis amount name, taking the first few analysis results, judging whether the analysis results take the maximum value, and judging the validity.
As shown in fig. 3, the tuning coordination scheme library includes a coordination fixed value calculation method library, fault case definition and automatic analysis quantity.
Fig. 2 shows a library of tuning schemes for the present embodiment. Defining a position enumeration value: defining a three-level physical branch, wherein the first-level branch performs fault position calculation based on the setting equipment, the second-level branch performs fault position calculation based on the first-level branch, and the third-level branch performs fault position calculation based on the first-level branch.
In the tuning engagement scheme library:
defining segment enumeration values: the method comprises a setting calculation section and a special section, wherein the special section supports customization.
Defining a cooperation fixed value calculation method library: and configuring equipment attributes and parameter value functions, and configuring fault case definitions.
Fault case definition: configuration of fault location, mode combination, fault type, definition of analysis quantity.
In some embodiments, the generic model further comprises tuning configuration rules that incorporate user usage habits; the setting configuration combined with the use habit of the user comprises setting calculation scenes, setting value items corresponding to each protection type configuration, setting principle configuration of each observation point, and defining three-level branch positions and branch path configuration setting principles according to the fault point relative to the point position of the setting equipment.
The setting calculation scene is shown in table 1.
Table 1 setting calculation scenario
| Sequence number | Setting a computing scene |
| 1 | Multistage line scene |
| 2 | Terminal line scene |
| 3 | System transformer scenario |
| 4 | Load transformer scenario |
Each protection type is configured with a corresponding constant value term, as shown in table 2.
TABLE 2 configuration of corresponding constant items for each protection type
Each observation point tuning principle configuration is shown in table 3.
TABLE 3 setting principle configuration for each observation point
Three-stage branch positions are defined in terms of fault points relative to the setpoint positions of the setting device, as shown in table 4.
TABLE 4 three stage branch position definition
The setting rules are set on the branches as shown in table 5.
Table 5 configuration setting principle on the branch
Example two
The embodiment provides a protection fixed value computing system based on a general model, which comprises the following components:
(1) The power grid data acquisition module is used for acquiring power grid related data;
(2) The protection fixed value calculation module is used for calculating the fixed value of the section protection scheme based on the general model and the acquired power grid related data;
the universal model comprises a setting data calling setting principle and a setting matching scheme library; the process of calculating the fixed value of the segment protection scheme is as follows:
calling a tuning principle and a tuning matching scheme library based on tuning data, and generating a matching type instance by combining the acquired power grid related data, so as to determine the position of a generating branch and obtain a section which can be matched on the generating branch;
and generating a power grid coordination relation result and a fault calculation result based on the generated branch positions and the segments which can be matched with the generated branch positions, determining a power grid fixed value range, and further calculating a fixed value of a segment protection scheme.
The power grid related data comprise primary modeling topology data, plant mode data, area mode data and area mode data.
The general model also comprises a setting configuration principle combined with the use habit of the user; the setting configuration combined with the use habit of the user comprises setting calculation scenes, setting value items corresponding to each protection type configuration, setting principle configuration of each observation point, and defining three-level branch positions and branch path configuration setting principles according to the fault point relative to the point position of the setting equipment.
In the specific implementation process, the setting matching scheme library comprises a matching fixed value calculation method library, fault case definition and automatic analysis quantity.
It should be noted that, each module in the embodiment corresponds to each step in the first embodiment one to one, and the implementation process is the same, which is not described here.
Example III
The present embodiment provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps in the general model-based protection value calculation method as described above.
Example IV
The embodiment provides an electronic device, which comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor realizes the steps in the protection constant value calculation method based on the general model when executing the program.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The protection fixed value calculation method based on the general model is characterized by comprising the following steps of:
acquiring power grid related data;
calculating a fixed value of the segment protection scheme based on the general model and the acquired power grid related data;
the universal model comprises a setting data calling setting principle and a setting matching scheme library; the process of calculating the fixed value of the segment protection scheme is as follows:
calling a tuning principle and a tuning matching scheme library based on tuning data, and generating a matching type instance by combining the acquired power grid related data, so as to determine the position of a generating branch and obtain a section which can be matched on the generating branch;
and generating a power grid coordination relation result and a fault calculation result based on the generated branch positions and the segments which can be matched with the generated branch positions, determining a power grid fixed value range, and further calculating a fixed value of a segment protection scheme.
2. The protection value calculation method based on the general model as set forth in claim 1, wherein the power grid related data includes primary modeling topology data, plant mode, area and area mode data.
3. The protection setting value calculation method based on the general model according to claim 1, wherein the general model further comprises a setting configuration principle combined with the use habit of a user; the setting configuration combined with the use habit of the user comprises setting calculation scenes, setting value items corresponding to each protection type configuration, setting principle configuration of each observation point, and defining three-level branch positions and branch path configuration setting principles according to the fault point relative to the point position of the setting equipment.
4. The protection fixed value calculation method based on the general model as claimed in claim 1, wherein the setting matching scheme library comprises a matching fixed value calculation method library, fault case definition and automatic analysis quantity.
5. A protection value computing system based on a generic model, comprising:
the power grid data acquisition module is used for acquiring power grid related data;
the protection fixed value calculation module is used for calculating the fixed value of the section protection scheme based on the general model and the acquired power grid related data;
the universal model comprises a setting data calling setting principle and a setting matching scheme library; the process of calculating the fixed value of the segment protection scheme is as follows:
calling a tuning principle and a tuning matching scheme library based on tuning data, and generating a matching type instance by combining the acquired power grid related data, so as to determine the position of a generating branch and obtain a section which can be matched on the generating branch;
and generating a power grid coordination relation result and a fault calculation result based on the generated branch positions and the segments which can be matched with the generated branch positions, determining a power grid fixed value range, and further calculating a fixed value of a segment protection scheme.
6. The protection value calculation system based on the general model according to claim 5, wherein the power grid related data includes primary modeling topology data, plant mode, area and area mode data.
7. The protection setting calculation system based on the general model according to claim 5, wherein the general model further comprises a setting configuration principle combined with the use habit of a user; the setting configuration combined with the use habit of the user comprises setting calculation scenes, setting value items corresponding to each protection type configuration, setting principle configuration of each observation point, and defining three-level branch positions and branch path configuration setting principles according to the fault point relative to the point position of the setting equipment.
8. The protection setting calculation system based on the general model as set forth in claim 5, wherein the setting matching scheme library comprises a matching setting calculation method library, fault case definition and automatic analysis quantity.
9. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the steps of the generic model-based protection value calculation method as claimed in any one of claims 1 to 4.
10. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the generic model-based protection value calculation method according to any of claims 1-4 when the program is executed.
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