CN109858828B - Power distribution network fixed value automatic setting method and device and distribution network system - Google Patents
Power distribution network fixed value automatic setting method and device and distribution network system Download PDFInfo
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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
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Abstract
The invention discloses a method and a device for automatically setting a fixed value of a power distribution network and a distribution network system. Firstly, configuring protection types, a fixed value item corresponding to each protection type, and a calculation principle and a value-taking principle corresponding to each fixed value item; when an automatic setting instruction for a certain switch is received, acquiring the protection type of the switch, the parameter values of all switches on an outgoing line where the switch is positioned, and the upper and lower stage topological relations of the switches; obtaining fixed value items to be set according to the protection types, and obtaining a calculation principle and a value-taking principle corresponding to each fixed value item; and for each fixed value item, determining the value of the fixed value item according to the corresponding calculation principle of the fixed value item, the parameter information of all switches and the corresponding value-taking principle. By adopting the method, when the calculation principle changes, the calculation principle can be modified through the visual interface, so that the maintenance cost is reduced, the user can configure by self, and the operation is simple.
Description
Technical Field
The disclosure belongs to the technical field of power switch protection, and particularly relates to a method and a device for automatically setting a fixed value of a power distribution network and a distribution network system.
Background
In the operation and maintenance process of the power distribution network, personal safety of power distribution network equipment and related personnel needs to be protected in a fixed value setting mode, namely safety accidents are avoided by setting fixed values of all power distribution management equipment in the power distribution network. In practical application, for a device to be subjected to constant value setting, parameters of upstream and downstream devices on the same line need to be considered, and for each constant value, a plurality of setting rules need to be satisfied.
Most of the current automatic setting methods for the distribution network constant value are directly realized by computer codes based on the setting principle of the local current user, but the method realizes the automatic setting of the constant value, but has the following problems:
when the setting principle of a user changes or the setting principles of other areas have differences, the algorithm is adjusted completely depending on developers because the user cannot see the algorithm, the developers need to clearly know the requirements of the user and then modify the algorithm, and if the difference of the setting principles is large, the time cost of modification is very high; each change of the algorithm requires the developer to communicate with the user repeatedly, so that the maintenance cost of the enterprise on the software is high;
because the user can not see the algorithm, the user can not visually see the own setting principle, and the user needs to test again after the algorithm is modified, so that the consistency of communication between the two parties is ensured.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a method and a device for automatically setting a fixed value of a power distribution network based on an extensible setting principle and a power distribution system. The method abstracts and generalizes the protection types related to the setting of the fixed value, the fixed value item corresponding to each protection type, the calculation principle and the value-taking principle corresponding to each fixed value item and other information, and establishes the method for automatically setting the fixed value with the extensible setting principle. When the calculation principle changes, the calculation principle can be modified through a visual interface, codes do not need to be modified from the bottom layer, maintenance cost is reduced, a user can customize configuration, and errors caused by communication problems between developers and the user are avoided.
In order to achieve the above object, one or more embodiments of the present disclosure provide the following technical solutions:
a distribution network fixed value automatic setting method based on an extensible setting principle is characterized in that protection types, a fixed value item corresponding to each protection type, a calculation principle and a value-taking principle corresponding to each fixed value item are configured; the calculation principle comprises a calculation formula and a condition to be met between the fixed value item and a calculation result; the value-taking principle comprises a value-taking mode of a fixed value item;
when receiving an automatic setting instruction aiming at a certain switch, executing the following steps:
acquiring the protection type of the switch, the parameter values of all switches on the outgoing line of the switch, and the upper and lower topological relations of the switches;
obtaining fixed value items to be set according to the protection types, and obtaining a calculation principle and a value-taking principle corresponding to each fixed value item;
and for each fixed value item, determining the value of the fixed value item according to the corresponding calculation principle of the fixed value item, the parameter information of all switches and the corresponding value-taking principle.
Further, the calculation formula is a mathematical formula containing variables, wherein the variables include a switch position index and a parameter name.
Further, the calculation principle comprises a calculation principle for participating in valuing the fixed value item and a calculation principle for later verification.
Further, the determining the value of the fixed-value item includes:
acquiring all calculation principles of the fixed value items, and acquiring one or more value intervals which need to be met by the fixed value items according to a calculation formula and conditions which need to be met between the fixed value items and calculation results for one or more calculation principles which participate in value taking;
and acquiring the value of the fixed value item based on the one or more value intervals and the value principle of the fixed value item.
Further, obtaining a value range that the fixed value item needs to satisfy includes:
analyzing one or more variables contained in a calculation formula in each calculation principle involved in value taking, wherein the variables comprise switch position indexes and parameter names;
obtaining the parameter values of the one or more variables based on the parameter values of all the switches and the upper and lower topological relations of the switches, and assigning the parameter values to the corresponding variables;
and if all variables in the calculation formula are assigned, executing calculation to obtain a calculation result, and obtaining a value interval according to a condition required to be met between the fixed value item and the calculation result.
Further, if all variables in the calculation formula are not assigned, whether the variables which are not assigned are constant-value items is judged:
if so, acquiring a calculation principle and a dereferencing principle corresponding to the constant value item, and executing dereferencing calculation of the constant value item; if not, the calculation formula cannot calculate due to the fact that the variables lack values, and error prompt information is generated.
Further, the method further comprises: and summarizing the constant value items of all the switches on the outgoing line and storing the constant value items.
One or more embodiments provide an automatic setting system for a power distribution network constant value based on an extensible setting principle, including:
the configuration module is used for configuring the protection types, the fixed value items contained in each protection type, the calculation formulas and the value-taking principles of each fixed value item, and storing the information into the storage module after receiving a configuration completion instruction;
and the fixed value setting module executes the fixed value automatic setting method when receiving an automatic setting instruction aiming at a certain switch.
One or more embodiments provide an automatic setting device for a power distribution network constant value based on an extensible setting principle, which includes a memory, a processor, and a computer program stored on the memory and operable on the processor, and when executed by the processor, the computer program implements:
generating a user interaction interface for a user to configure protection types, fixed value items corresponding to each protection type, and a calculation principle and a value-taking principle corresponding to each fixed value item; the calculation principle comprises a calculation formula and a condition to be met between the fixed value item and a calculation result; the value-taking principle comprises a value-taking mode of a fixed value item;
when receiving an automatic setting instruction for a certain switch, executing the following steps:
acquiring the protection type of the switch, the parameter values of all switches on the outgoing line of the switch, and the upper and lower topological relations of the switches;
obtaining fixed value items to be set according to the protection types, and obtaining a calculation principle and a value-taking principle corresponding to each fixed value item;
and for each fixed value item, determining the value of the fixed value item according to the corresponding calculation principle of the fixed value item, the parameter information of all switches and the corresponding value-taking principle.
One or more embodiments provide a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements:
generating a user interaction interface for a user to configure protection types, fixed value items corresponding to each protection type, and a calculation principle and a value-taking principle corresponding to each fixed value item; the calculation principle comprises a calculation formula and a condition to be met between the fixed value item and a calculation result; the value-taking principle comprises a value-taking mode of a fixed value item;
when receiving an automatic setting instruction for a certain switch, executing the following steps:
acquiring the protection type of the switch, the parameter values of all switches on the outgoing line of the switch, and the upper and lower topological relations of the switches;
obtaining fixed value items to be set according to the protection types, and obtaining a calculation principle and a value-taking principle corresponding to each fixed value item;
and for each fixed value item, determining the value of the fixed value item according to the corresponding calculation principle of the fixed value item, the parameter information of all switches and the corresponding value-taking principle.
One or more embodiments provide a power distribution system, and fixed value setting is executed by applying the power distribution network fixed value automatic setting method based on the extensible setting principle.
The above one or more technical solutions have the following beneficial effects:
the method abstracts and extracts the protection types related to the setting of the fixed value, the fixed value item corresponding to each protection type, the calculation principle and the value-taking principle corresponding to each fixed value item, establishes a correlation database model, and provides a method for automatically setting the fixed value based on the data model. By establishing a correlation database model, the protection types, the fixed value items corresponding to each protection type, the calculation principle and the value-taking principle and other information corresponding to each fixed value item can be expanded and configured according to specific requirements of users; when the calculation principle changes, only the corresponding table entry needs to be modified, the operation is simple, the code does not need to be modified from the bottom layer, and the maintenance cost is reduced; and the user can customize the configuration, thereby avoiding errors caused by communication problems between developers and the user.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.
Fig. 1 is a flowchart of a method for automatically setting a fixed value of a power distribution network based on an extensible setting principle according to an embodiment of the present disclosure.
Fig. 2 is a specific flowchart of a power distribution network fixed value automatic setting method based on an extensible setting principle according to an embodiment of the present disclosure.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. 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 disclosure 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 example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.
Example one
The embodiment discloses a power distribution network fixed value automatic setting method based on an extensible setting principle, which comprises the following steps of:
firstly, dividing protection types, obtaining fixed value items contained in each protection type, and pre-storing contents such as a calculation formula, a value-taking principle and the like of each fixed value item into a system, preferably, storing the contents in a database mode.
The database stores protection types, fixed value items corresponding to the protection types, and calculation principles and value-taking principles corresponding to the fixed value items. Wherein the content of the first and second substances,
the protection types include: protection type number and name, see table 1;
table 1 example protection type attribute table
| Serial number | Type of protection |
| 1 | Intermediate circuit breaker protection |
| 2 | Branch circuit breaker protection |
| 3 | Demarcation circuit breaker protection |
The fixed value item comprises: the number, the protection type and the name of the constant value item, and the corresponding calculation principle and value principle index, wherein table 2 is an example of the attribute related to the constant value item;
table 2 constant value item attribute table example
| Serial number | Fixed value item | Type of protection | Principle of calculation | Principle of value taking |
| 1 | At one stage between phases | Intermediate circuit breaker protection | Numbering according to the principle of calculation | Corresponding value principle number |
| 2 | Two phase to phase | Intermediate circuit breaker protection | Numbering according to the principle of calculation | Corresponding value principle number |
| 3 | Zero sequence one section | Intermediate circuit breaker protection | Numbering according to the principle of calculation | Corresponding value principle number |
| 4 | At one stage between phases | Branch circuit breaker protection | Numbering according to the principle of calculation | Corresponding value principle number |
| 5 | Two phase to phase | Branch circuit breaker protection | Numbering according to the principle of calculation | Corresponding value principle number |
The calculation principle comprises the following steps: the method comprises the following steps of calculating a rule number, belonging constant value items, calculating a rule name, a calculating formula, conditions (equal to, less than, greater than, less than or equal to, greater than or equal to) to be met by a final constant value, and whether to participate in value taking. The calculation formula is a mathematical formula combination containing variables, and the variables comprise switch position indexes and parameter names and are used for matching corresponding actual values subsequently; whether the value is participated in or not is judged to be 'no', and the judgment is only used for verifying whether the fixed value has risk or not at the later stage.
Table 3 is a calculation principle example of a fixed value item between phases of the intermediate breaker protection type;
TABLE 3 calculation principle attribute representation example of a section of constant value items between phases of intermediate circuit breaker protection types
The value-taking principle comprises the following steps: the method comprises the following steps of numbering a value principle, naming the value principle, calculating the condition of the principle (the upper limit is less than the lower limit, the upper limit is more than or equal to the lower limit, all conditions), calculating the upper limit of the principle, calculating the lower limit of the principle, taking the value mode (the upper limit value, the lower limit value, the middle value, the fixed value and the operation value) and the fixed value, wherein a table 4 is an example of the value principle of a section of fixed value items at intervals of the protection type of the middle;
TABLE 4 example of value principle attribute representation of a fixed value item between phases of middle circuit breaker protection types
The configuration of the calculation principle and the value-taking principle which are abstracted out is mutually independent, so that a user can modify or expand the setting principle in a targeted manner. Preferably, the above configuration process may be performed by a visual manner, such as a user interaction interface.
When receiving an automatic setting instruction aiming at a certain switch, executing the following steps:
step 1: acquiring the protection type of the switch, the parameter information of all switches on the outgoing line where the switch is positioned, and the upper and lower topological relations of the switches;
step 2: obtaining constant value items to be calculated according to the protection types, and obtaining a calculation principle and a value-taking principle corresponding to each constant value item;
and step 3: and for each fixed value item, determining the value of the fixed value item according to the corresponding calculation principle of the fixed value item, the parameter information of all switches and the corresponding value-taking principle.
The step 3 specifically includes:
step 3.1: acquiring a calculation principle of participation values of a certain fixed value item;
step 3.2: analyzing one or more variables contained in a calculation formula in the calculation principle and conditions required to be met by the calculation principle;
step 3.3: giving corresponding parameter information to the one or more variables according to the meanings of the one or more variables, the parameter information of all the switches acquired in the step 1 and the upper and lower level topological relations of the switches;
step 3.4: judging whether all variables in the calculation principle are assigned, if so, executing the step 3.5, and if not, executing the step 3.6;
step 3.5: executing the calculation of the calculation principle according to the given parameter information to obtain the value of the calculation principle;
further judging whether other non-calculated calculation principles participating in value taking exist in the fixed value item, and if so, repeatedly executing the step 3.2-the step 3.5; if not, generating the value range of one or more fixed value items according to the values of the calculation principles and the conditions to be met;
determining the value of the fixed value item according to the value range and the value principle of the one or more fixed value items;
step 3.6: judging whether the variables which are not assigned are constant value items, if not, recording the constant value items as the constant value items which lack data parameters and can not be calculated, and using the constant value items for error prompt; if yes, taking the fixed value item as a next object to be calculated, acquiring a calculation principle and a value-taking principle corresponding to the fixed value item, and repeatedly executing the steps 3.1-3.6; until there is no constant value item to calculate.
And 4, step 4: verifying the setting value according to a calculation principle for checking in each constant value item calculation principle;
and 5: and forming a calculation result: summarizing the values of all constant value items of all computation switches; prompting parameter error; and calculating principle check conditions. And summarizing the constant value item values of all switches on the outgoing line and storing the constant value item values into a database.
Example two
An object of the present embodiment is to provide a computing device.
An object of the present embodiment is to provide a computer-readable storage medium.
A computer-readable storage medium, having stored thereon a computer program which, when executed by a processor, implements:
generating a user interaction interface for a user to configure protection types, fixed value items corresponding to each protection type, and a calculation principle and a value-taking principle corresponding to each fixed value item; the calculation principle comprises a calculation formula and a condition to be met between the fixed value item and a calculation result; the value-taking principle comprises a value-taking mode of a fixed value item;
when receiving an automatic setting instruction for a certain switch, executing the following steps:
acquiring the protection type of the switch, the parameter values of all switches on the outgoing line of the switch, and the upper and lower topological relations of the switches;
obtaining fixed value items to be set according to the protection types, and obtaining a calculation principle and a value-taking principle corresponding to each fixed value item;
and for each fixed value item, determining the value of the fixed value item according to the corresponding calculation principle of the fixed value item, the parameter information of all switches and the corresponding value-taking principle.
EXAMPLE III
An automatic setting device for a fixed value of a power distribution network based on an extensible setting principle comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein when the program is executed by the processor, the program realizes that:
generating a user interaction interface for a user to configure protection types, fixed value items corresponding to each protection type, and a calculation principle and a value-taking principle corresponding to each fixed value item; the calculation principle comprises a calculation formula and a condition to be met between the fixed value item and a calculation result; the value-taking principle comprises a value-taking mode of a fixed value item;
when receiving an automatic setting instruction for a certain switch, executing the following steps:
acquiring the protection type of the switch, the parameter values of all switches on the outgoing line of the switch, and the upper and lower topological relations of the switches;
obtaining fixed value items to be set according to the protection types, and obtaining a calculation principle and a value-taking principle corresponding to each fixed value item;
and for each fixed value item, determining the value of the fixed value item according to the corresponding calculation principle of the fixed value item, the parameter information of all switches and the corresponding value-taking principle.
Example four
The embodiment aims to provide a fixed value automatic setting system.
A distribution network constant value automatic setting system based on an extensible setting principle comprises:
the configuration module is used for configuring the protection types, the fixed value items contained in each protection type, the calculation formulas and the value-taking principles of each fixed value item, and storing the information into the storage module after receiving a configuration completion instruction;
the storage module is used for receiving and storing the information sent by the configuration module;
and the fixed value setting module executes the fixed value automatic setting method according to the first embodiment when receiving an automatic setting instruction for a certain switch.
EXAMPLE five
It is an object of the present embodiment to provide a power distribution system.
A distribution system executes fixed value setting by applying the power distribution network fixed value automatic setting method based on the extensible setting principle.
The steps involved in the above second, third and fourth embodiments correspond to the first embodiment of the method, and the detailed description thereof can be found in the relevant description of the first embodiment. The term "computer-readable storage medium" should be taken to include a single medium or multiple media containing one or more sets of instructions; it should also be understood to include any medium that is capable of storing, encoding or carrying a set of instructions for execution by a processor and that cause the processor to perform any of the methods of the present disclosure.
One or more of the above embodiments have the following technical effects:
the method abstracts and extracts the protection types related to the setting of the fixed value, the fixed value item corresponding to each protection type, the calculation principle and the value-taking principle corresponding to each fixed value item, establishes a correlation database model, and provides a method for automatically setting the fixed value based on the data model. By establishing a correlation database model, the protection types, the fixed value items corresponding to each protection type, the calculation principle and the value-taking principle and other information corresponding to each fixed value item can be expanded and configured according to specific requirements of users; when the calculation principle changes, only the corresponding table entry needs to be modified, the operation is simple, the code does not need to be modified from the bottom layer, and the maintenance cost is reduced; and the user can customize the configuration, thereby avoiding errors caused by communication problems between developers and the user.
Those skilled in the art will appreciate that the modules or steps of the present disclosure described above can be implemented using general purpose computer means, or alternatively, they can be implemented using program code executable by computing means, whereby the modules or steps may be stored in memory means for execution by the computing means, or separately fabricated into individual integrated circuit modules, or multiple modules or steps thereof may be fabricated into a single integrated circuit module. The present disclosure is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
Claims (9)
1. A power distribution network fixed value automatic setting method based on an extensible setting principle is characterized in that protection types, fixed value items corresponding to the protection types, and a calculation principle and a value-taking principle corresponding to the fixed value items are configured firstly; wherein the calculation principle comprises: calculating a principle number; the belonging constant value item; calculating a principle name; calculating a formula; the condition to be satisfied between the fixed value item and the calculation result; whether to participate in value taking or not; the calculation formula comprises a mathematical formula combination of variables, wherein the variables comprise switch position indexes and parameter names; the value-taking principle comprises a value-taking mode of a fixed value item; the protection types include: protection type number and name; when receiving an automatic setting instruction aiming at a certain switch, executing the following steps:
step 1: acquiring the protection type of the switch, the parameter values of all switches on the outgoing line of the switch, and the upper and lower topological relations of the switches;
step 2: obtaining fixed value items to be set according to the protection types, and obtaining a calculation principle and a value-taking principle corresponding to each fixed value item;
and step 3: for each fixed value item, determining the value of the fixed value item according to the corresponding calculation principle of the fixed value item, the parameter information of all switches and the corresponding value-taking principle;
the step 3 specifically includes: judging whether the fixed value item has other non-calculated calculation principles participating in value taking, if not, generating the value taking range of one or more fixed value items according to the value of the calculation principles and the conditions to be met; determining the value of the fixed value item according to the value range and the value principle of one or more fixed value items; and judging whether the variables which are not assigned are constant value items, if so, acquiring a calculation principle and a value-taking principle corresponding to the constant value items.
2. The method for automatically setting the fixed value of the power distribution network based on the extensible setting principle as claimed in claim 1, wherein the calculation principle includes a calculation principle for participating in the value taking of the fixed value item and a calculation principle for later verification.
3. The method for automatically setting the fixed value of the power distribution network based on the extensible setting principle of claim 1, wherein the determining the value of the fixed value item comprises:
acquiring all calculation principles of the fixed value items, and acquiring one or more value intervals which need to be met by the fixed value items according to a calculation formula and conditions which need to be met between the fixed value items and calculation results for one or more calculation principles which participate in value taking;
and acquiring the value of the fixed value item based on the one or more value intervals and the value principle of the fixed value item.
4. The method for automatically setting the fixed value of the power distribution network based on the extensible setting principle of claim 3, wherein the step of obtaining the value interval which needs to be satisfied by the fixed value item comprises the following steps:
and analyzing one or more variables contained in a calculation formula in each calculation principle involved in the value taking, wherein the variables comprise switch position indexes and parameter names.
5. The method for automatically setting the fixed value of the power distribution network based on the expandable setting principle of claim 1, wherein the method further comprises: and summarizing the constant value items of all the switches on the outgoing line and storing the constant value items.
6. The utility model provides a distribution network definite value automatic setting system based on scalable principle of setting which characterized in that includes:
the configuration module is used for configuring the protection types, the fixed value items contained in each protection type, the calculation formulas and the value-taking principles of each fixed value item, and storing the information into the storage module after receiving a configuration completion instruction;
the fixed value setting module executes the fixed value automatic setting method according to any one of claims 1 to 5 when receiving an automatic setting instruction for a certain switch.
7. An automatic setting device for a fixed value of a power distribution network based on an extensible setting principle comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, and is characterized in that when the program is executed by the processor, the program realizes that:
generating a user interaction interface for a user to configure protection types, fixed value items corresponding to each protection type, and a calculation principle and a value-taking principle corresponding to each fixed value item; the calculation principle comprises a calculation formula and a condition to be met between the fixed value item and a calculation result; the value-taking principle comprises a value-taking mode of a fixed value item;
when receiving an automatic setting instruction for a certain switch, executing the following steps:
acquiring the protection type of the switch, the parameter values of all switches on the outgoing line of the switch, and the upper and lower topological relations of the switches;
obtaining fixed value items to be set according to the protection types, and obtaining a calculation principle and a value-taking principle corresponding to each fixed value item;
and for each fixed value item, determining the value of the fixed value item according to the corresponding calculation principle of the fixed value item, the parameter information of all switches and the corresponding value-taking principle.
8. A computer-readable storage medium on which a computer program is stored, the program, when executed by a processor, implementing:
generating a user interaction interface for a user to configure protection types, fixed value items corresponding to each protection type, and a calculation principle and a value-taking principle corresponding to each fixed value item; the calculation principle comprises a calculation formula and a condition to be met between the fixed value item and a calculation result; the value-taking principle comprises a value-taking mode of a fixed value item;
when receiving an automatic setting instruction for a certain switch, executing the following steps:
acquiring the protection type of the switch, the parameter values of all switches on the outgoing line of the switch, and the upper and lower topological relations of the switches;
obtaining fixed value items to be set according to the protection types, and obtaining a calculation principle and a value-taking principle corresponding to each fixed value item;
and for each fixed value item, determining the value of the fixed value item according to the corresponding calculation principle of the fixed value item, the parameter information of all switches and the corresponding value-taking principle.
9. An electric distribution system, characterized in that the fixed value setting is executed by applying the automatic setting method of the distribution network fixed value based on the expandable setting principle according to any one of claims 1 to 5.
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| CN110417118B (en) * | 2019-06-11 | 2021-04-23 | 国网江西省电力有限公司赣东北供电分公司 | Setting calculation method for automatically generating fixed value switch fixed value diagram of distribution network line |
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