CN114421439B - Power grid protection fixed value data changing method based on visualization and expert system - Google Patents
Power grid protection fixed value data changing method based on visualization and expert system Download PDFInfo
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- CN114421439B CN114421439B CN202111622384.7A CN202111622384A CN114421439B CN 114421439 B CN114421439 B CN 114421439B CN 202111622384 A CN202111622384 A CN 202111622384A CN 114421439 B CN114421439 B CN 114421439B
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- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000012800 visualization Methods 0.000 title claims abstract description 20
- 230000009471 action Effects 0.000 claims abstract description 26
- 230000008859 change Effects 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims abstract description 5
- 238000012935 Averaging Methods 0.000 claims abstract description 3
- 230000008569 process Effects 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000000007 visual effect Effects 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 238000004590 computer program Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000004088 simulation 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
- 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
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
-
- 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
-
- 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
- H02H3/08—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 responsive to excess current
-
- 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
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/28—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for meshed systems
Abstract
The application discloses a power grid protection fixed value data changing method based on a visualization and expert system, which comprises the steps of obtaining data, and processing the data to obtain a setting Iop of an overcurrent protection action current; repeatedly taking the value of Krel according to the first setting, and combining the setting Iop of the overcurrent protection action current to obtain a relay return coefficient Kre; averaging the relay return coefficients Kre to serve as new relay return coefficients; searching for matched protection fixed value equipment in an expert system according to the new relay return coefficient, thereby obtaining changed protection fixed value parameters; according to the application, the optimal protection constant value parameter is generated based on the change of the power grid protection constant value data, so that the load rate of the power grid is reduced.
Description
Technical Field
The application relates to the technical field of power grid protection, in particular to a power grid protection fixed value data changing method based on a visualization and expert system.
Background
In recent years, in a power system, a facility and equipment for connecting power generation and power consumption are generally called as a power network, and the facility and equipment belong to an intermediate link for transmitting and distributing electric energy.
The local fault of the power grid circuit is easy to cause the change of the protection fixed value parameter, so that the proper protection fixed value change data are needed to protect the normal operation of the power grid, the reliability and the safety of the selective switching protection configuration equipment are determined by the accuracy of the change data, the local fault even overload phenomenon of the power grid can be caused by inaccurate protection fixed value data, the energy is wasted greatly, and the fault rate is improved.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application.
The present application has been made in view of the above-described problems occurring in the prior art.
Therefore, the application provides a method for changing the power grid protection fixed value data based on the visualization and expert system, which can avoid overlarge power grid load caused by inaccurate protection fixed value.
In order to solve the technical problems, the application provides the following technical scheme: the method comprises the steps of acquiring data, and processing to obtain a setting Iop of an overcurrent protection action current; repeatedly taking the value of Krel according to the first setting, and combining the setting Iop of the overcurrent protection action current to obtain a relay return coefficient Kre; averaging the relay return coefficients Kre to serve as new relay return coefficients; and searching the matched protection fixed value equipment in an expert system according to the new relay return coefficient, thereby obtaining the changed protection fixed value parameter.
As a preferable scheme of the visualization and expert system-based power grid protection fixed value data changing method, the application comprises the following steps: the acquiring data includes: and carrying out visual on-line monitoring on the power grid operation data to obtain a current data record of the transformer operation data changed.
As a preferable scheme of the visualization and expert system-based power grid protection fixed value data changing method, the application comprises the following steps: the process comprises: and carrying out queuing processing on the changed current data in an expert system in the power grid, and screening and comparing the current data with a preset protection value to obtain the setting Iop of the overcurrent protection action current.
As a preferable scheme of the visualization and expert system-based power grid protection fixed value data changing method, the application comprises the following steps: further comprises: setting Iop of overcurrent protection action current, wiring coefficient Kw of a protection device, current transformer transformation ratio Ki and change load current ITmax as constant, taking a reliability coefficient Krel of the protection device as variables, and taking a relay return coefficient Kre as a required quantity;
the relay return coefficient Kre is obtained according to the following:
Kre＝(KwKrelKiITmax*t)/Iop
wherein t is the overcurrent protection action time of the transformer.
As a preferable scheme of the visualization and expert system-based power grid protection fixed value data changing method, the application comprises the following steps: comprising the following steps: and setting the overcurrent protection action time t of the transformer, wherein if the protection device is divided into a front stage and a rear stage, the overcurrent protection action time t of the transformer is required to ensure the action selectivity and is set according to the step principle.
As a preferable scheme of the visualization and expert system-based power grid protection fixed value data changing method, the application comprises the following steps: the first setting includes: reducing the reliable coefficient Krel of the protection device in a decreasing way by taking 0.05 as a reducing step length to obtain a plurality of groups of different new relay return coefficients; wherein the value range of Krel is 1.2-1.25.
As a preferable scheme of the visualization and expert system-based power grid protection fixed value data changing method, the application comprises the following steps: comprising the following steps: when selecting the relay, the preset protection value cannot be at the maximum value or the minimum value of the relay fixed value.
As a preferable scheme of the visualization and expert system-based power grid protection fixed value data changing method, the application comprises the following steps: further comprises: and (3) periodically checking the relay fixed value, and carrying out integral linkage experiment with the switch cabinet after checking.
As a preferable scheme of the visualization and expert system-based power grid protection fixed value data changing method, the application comprises the following steps: comprising the following steps: and modifying the protection fixed value equipment by using the intelligent electric control switch according to the modified protection fixed value parameter.
The application has the beneficial effects that: and the optimal protection constant value parameter is generated rapidly, so that the load rate of the power grid is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
fig. 1 is a flowchart of a method for changing power grid protection fixed value data based on a visualization and expert system according to a first embodiment of the present application.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present application can be understood in detail, a more particular description of the application, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the application. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
While the embodiments of the present application have been illustrated and described in detail in the drawings, the cross-sectional view of the device structure is not to scale in the general sense for ease of illustration, and the drawings are merely exemplary and should not be construed as limiting the scope of the application. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
Also in the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper, lower, inner and outer", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first, second, or third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The terms "mounted, connected, and coupled" should be construed broadly in this disclosure unless otherwise specifically indicated and defined, such as: can be fixed connection, detachable connection or integral connection; it may also be a mechanical connection, an electrical connection, or a direct connection, or may be indirectly connected through an intermediate medium, or may be a communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Example 1
Referring to fig. 1, a first embodiment of the present application provides a method for changing power grid protection fixed value data based on a visualization and expert system, including:
s1: and acquiring and processing data to obtain the setting Iop of the overcurrent protection action current.
(1) And carrying out visual on-line monitoring on the power grid operation data to obtain a current data record of the transformer operation data changed.
(2) The changed current data are subjected to queuing treatment in an expert system in the power grid, and are screened and compared with a preset protection value to obtain a setting Iop of the overcurrent protection action current;
when a relay is selected, the preset protection value C cannot be at the maximum value A or the minimum value B of the relay fixed value, the relay fixed value is checked regularly, and an integral linkage experiment is carried out with the switch cabinet after the checking;
C＝(A+B)/2
preferably, the present application sets the preset protection value according to the maximum value and the minimum value of the relay fixed value, and does not make the comparison value be near the maximum value and the minimum value, wherein the intermediate value is selected, and the intermediate value is selected to deviate from the maximum value and the minimum value so as to make the preset protection value optimal.
S2: and repeatedly taking the value of Krel according to the first setting, and combining the setting Iop of the overcurrent protection action current to obtain the relay return coefficient Kre.
(1) Setting Iop of overcurrent protection action current, wiring coefficient Kw of a protection device, current transformer transformation ratio Ki and change load current ITmax as constant, taking a reliability coefficient Krel of the protection device as variables, and taking a relay return coefficient Kre as a required quantity;
the relay return coefficient Kre is obtained according to the following:
Kre＝(KwKrelKiITmax*t)/Iop
wherein t is the overcurrent protection action time of the transformer.
(2) Setting the overcurrent protection action time t of the transformer, wherein if the protection device is divided into a front stage and a rear stage, the overcurrent protection action time t of the transformer is required to ensure the action selectivity and is set according to a ladder principle; the first setting includes: and (3) reducing the step length by 0.05, and reducing the reliability coefficient Krel of the protection device in a decreasing manner to obtain a plurality of groups of different new relay return coefficients, wherein the value range of Krel is 1.2-1.25.
S3: the relay return coefficient Kre is averaged as a new relay return coefficient.
Kre^＝Average(Kre)
S4: and searching the matched protection constant value equipment in an expert system according to the new relay return coefficient Kre so as to obtain the changed protection constant value parameter.
And the intelligent electric control switch changes the protection fixed value equipment according to the changed protection fixed value parameter.
Preferably, the application obtains a new high-performance relay return coefficient Kre by comparing the real-time monitoring power grid data with the preset value, and changes the corresponding protection constant value equipment by searching an expert system, thereby always keeping the performance of the power grid parameters.
Example 2
The technical effects adopted in the method are verified and explained, the traditional technical scheme is selected and the method is adopted for comparison test, and the test results are compared by means of scientific demonstration to verify the true effects of the method.
The traditional technical scheme is as follows: the protection constant value parameter is not changed, so that the power grid load is overlarge.
Compared with the traditional technical scheme, the method has higher coordination, and can well reduce the load of the power grid. In this embodiment, the conventional technical scheme and the method are adopted to respectively measure and compare the loads of the power grids in the same area in real time.
Test environment: and simulating the power grid data of the same section on a MATLB simulation platform, testing by using the traditional technical scheme and the method respectively, and obtaining test result data, wherein the results are shown in the following table or the lower graph.
Table 1: data comparison table.
From the table, the power grid fault rate and the load rate of the method are obviously smaller than those of the traditional technical scheme, and the result is better.
It should be appreciated that embodiments of the application may be implemented or realized by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer readable memory. The methods may be implemented in a computer program using standard programming techniques, including a non-transitory computer readable storage medium configured with a computer program, where the storage medium so configured causes a computer to operate in a specific and predefined manner, in accordance with the methods and drawings described in the specific embodiments. Each program may be implemented in a high level procedural or object oriented programming language to communicate with a computer system. However, the program(s) can be implemented in assembly or machine language, if desired. In any case, the language may be a compiled or interpreted language. Furthermore, the program can be run on a programmed application specific integrated circuit for this purpose.
Furthermore, the operations of the processes described herein may be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The processes (or variations and/or combinations thereof) described herein may be performed under control of one or more computer systems configured with executable instructions, and may be implemented as code (e.g., executable instructions, one or more computer programs, or one or more applications), by hardware, or combinations thereof, collectively executing on one or more processors. The computer program includes a plurality of instructions executable by one or more processors.
Further, the method may be implemented in any type of computing platform operatively connected to a suitable computing platform, including, but not limited to, a personal computer, mini-computer, mainframe, workstation, network or distributed computing environment, separate or integrated computer platform, or in communication with a charged particle tool or other imaging device, and so forth. Aspects of the application may be implemented in machine-readable code stored on a non-transitory storage medium or device, whether removable or integrated into a computing platform, such as a hard disk, optical read and/or write storage medium, RAM, ROM, etc., such that it is readable by a programmable computer, which when read by a computer, is operable to configure and operate the computer to perform the processes described herein. Further, the machine readable code, or portions thereof, may be transmitted over a wired or wireless network. When such media includes instructions or programs that, in conjunction with a microprocessor or other data processor, implement the steps described above, the application described herein includes these and other different types of non-transitory computer-readable storage media. The application also includes the computer itself when programmed according to the methods and techniques of the present application. The computer program can be applied to the input data to perform the functions described herein, thereby converting the input data to generate output data that is stored to the non-volatile memory. The output information may also be applied to one or more output devices such as a display. In a preferred embodiment of the application, the transformed data represents physical and tangible objects, including specific visual depictions of physical and tangible objects produced on a display.
As used in this disclosure, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, the components may be, but are not limited to: a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of example, both an application running on a computing device and the computing device can be a component. One or more components may reside within a process and/or thread of execution and a component may be localized on one computer and/or distributed between two or more computers. Furthermore, these components can execute from various computer readable media having various data structures thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from one component interacting with another component in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).
It should be noted that the above embodiments are only for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present application may be modified or substituted without departing from the spirit and scope of the technical solution of the present application, which is intended to be covered in the scope of the claims of the present application.
Claims (5)
1. The method for changing the power grid protection fixed value data based on the visualization and expert system is characterized by comprising the following steps of: comprising the following steps:
acquiring and processing data to obtain a setting Iop of the overcurrent protection action current;
the acquiring data includes:
performing visual on-line monitoring on the power grid operation data to obtain a current data record of the transformer operation data;
the process comprises:
the changed current data are subjected to queuing treatment in an expert system in the power grid, and are screened and compared with a preset protection value to obtain a setting Iop of the overcurrent protection action current;
repeatedly taking the value of the reliable coefficient Krel according to the first setting, and combining the setting Iop of the overcurrent protection action current to obtain a relay return coefficient Kre;
further comprises:
setting Iop of overcurrent protection action current, wiring coefficient Kw of a protection device, current transformer transformation ratio Ki and change load current ITmax as constant, taking a reliability coefficient Krel of the protection device as variables, and taking a relay return coefficient Kre as a required quantity;
the relay return coefficient Kre is obtained according to the following:
Kre＝(Kw*Krel*Ki*ITmax*t)/Iop
wherein t is the overcurrent protection action time of the transformer;
the first setting includes:
reducing the reliable coefficient Krel of the protection device in a decreasing way by taking 0.05 as a reducing step length to obtain a plurality of groups of different new relay return coefficients;
wherein the value range of Krel is 1.2-1.25;
averaging the relay return coefficients Kre to serve as new relay return coefficients;
Kre^＝Average(Kre)
and searching the matched protection fixed value equipment in an expert system according to the new relay return coefficient, thereby obtaining the changed protection fixed value parameter.
2. The method for changing the power grid protection fixed value data based on the visualization and expert system as set forth in claim 1, wherein the method comprises the following steps: comprising the following steps:
and setting the overcurrent protection action time t of the transformer, wherein if the protection device is divided into a front stage and a rear stage, the overcurrent protection action time t of the transformer is required to ensure the action selectivity and is set according to the step principle.
3. The method for changing the power grid protection fixed value data based on the visualization and expert system as set forth in claim 1, wherein the method comprises the following steps: comprising the following steps: when selecting the relay, the preset protection value cannot be at the maximum value or the minimum value of the relay fixed value.
4. A method for changing the power grid protection fixed value data based on a visualization and expert system as set forth in claim 3, wherein: further comprises: and (3) periodically checking the relay fixed value, and carrying out integral linkage experiment with the switch cabinet after checking.
5. The method for changing the power grid protection fixed value data based on the visualization and expert system as set forth in claim 4, wherein the method comprises the following steps: comprising the following steps:
and modifying the protection fixed value equipment by using the intelligent electric control switch according to the modified protection fixed value parameter.
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| CN202111622384.7A CN114421439B (en) | 2021-12-28 | 2021-12-28 | Power grid protection fixed value data changing method based on visualization and expert system |
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| CN202111622384.7A CN114421439B (en) | 2021-12-28 | 2021-12-28 | Power grid protection fixed value data changing method based on visualization and expert system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855692A (en) * | 2014-03-27 | 2014-06-11 | 贵州电网公司六盘水供电局 | Method for acquiring multi-partition relay protection setting value |
| CN106022574A (en) * | 2016-05-09 | 2016-10-12 | 国网河南省电力公司商丘供电公司 | Method and apparatus for generating relay protection changing information list automatically |
| KR20190109051A (en) * | 2018-03-16 | 2019-09-25 | 강문식 | An automatic calculation method of correction values for protection relays and a computer program thereof |
| CN111614066A (en) * | 2020-05-20 | 2020-09-01 | 国网河北省电力有限公司电力科学研究院 | Automatic setting method and system for relay protection setting value of power distribution network |
-
2021
- 2021-12-28 CN CN202111622384.7A patent/CN114421439B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855692A (en) * | 2014-03-27 | 2014-06-11 | 贵州电网公司六盘水供电局 | Method for acquiring multi-partition relay protection setting value |
| CN106022574A (en) * | 2016-05-09 | 2016-10-12 | 国网河南省电力公司商丘供电公司 | Method and apparatus for generating relay protection changing information list automatically |
| KR20190109051A (en) * | 2018-03-16 | 2019-09-25 | 강문식 | An automatic calculation method of correction values for protection relays and a computer program thereof |
| CN111614066A (en) * | 2020-05-20 | 2020-09-01 | 国网河北省电力有限公司电力科学研究院 | Automatic setting method and system for relay protection setting value of power distribution network |
Non-Patent Citations (1)
| Title |
|---|
| 地区电网保护定值校核专家系统的研究;王建平;王远波;;电力系统自动化(03);全文 * |
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