CN111563646A - Lightning protection scheme evaluation method, device, equipment and storage medium - Google Patents
Lightning protection scheme evaluation method, device, equipment and storage medium Download PDFInfo
- Publication number
- CN111563646A CN111563646A CN202010212324.7A CN202010212324A CN111563646A CN 111563646 A CN111563646 A CN 111563646A CN 202010212324 A CN202010212324 A CN 202010212324A CN 111563646 A CN111563646 A CN 111563646A
- Authority
- CN
- China
- Prior art keywords
- lightning
- lightning protection
- protection scheme
- power distribution
- line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000011156 evaluation Methods 0.000 title claims abstract description 34
- 238000003860 storage Methods 0.000 title claims abstract description 16
- 238000009826 distribution Methods 0.000 claims abstract description 66
- 238000004458 analytical method Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 23
- 238000004590 computer program Methods 0.000 claims description 21
- 238000012423 maintenance Methods 0.000 claims description 8
- 238000004088 simulation Methods 0.000 claims description 8
- 230000001052 transient effect Effects 0.000 claims description 8
- 208000025274 Lightning injury Diseases 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 239000004020 conductor Substances 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 238000005315 distribution function Methods 0.000 description 2
- 101100499229 Mus musculus Dhrsx gene Proteins 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
- G06Q10/06393—Score-carding, benchmarking or key performance indicator [KPI] analysis
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/067—Enterprise or organisation modelling
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/06—Energy or water supply
Landscapes
- Business, Economics & Management (AREA)
- Human Resources & Organizations (AREA)
- Engineering & Computer Science (AREA)
- Economics (AREA)
- Strategic Management (AREA)
- Entrepreneurship & Innovation (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Marketing (AREA)
- Educational Administration (AREA)
- Development Economics (AREA)
- Tourism & Hospitality (AREA)
- Physics & Mathematics (AREA)
- General Business, Economics & Management (AREA)
- Game Theory and Decision Science (AREA)
- Health & Medical Sciences (AREA)
- Operations Research (AREA)
- Quality & Reliability (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Primary Health Care (AREA)
- General Health & Medical Sciences (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a lightning protection scheme evaluation method, which comprises the following steps: determining a plurality of lightning protection schemes corresponding to the current flexible direct current power distribution system according to system parameters of the current flexible direct current power distribution system; acquiring lightning overvoltage and line lightning-resistant level of a converter station of each lightning protection scheme, and calculating line lightning trip-out rate of each lightning protection scheme according to the line lightning-resistant level; inputting the line lightning trip-out rate, the convertor station lightning overvoltage and preset economic parameters of each lightning protection scheme into a preset AHP hierarchical analysis model to obtain a weight coefficient of each scheme; and setting the scheme with the highest weight coefficient as the optimal lightning protection scheme corresponding to the current flexible direct current power distribution system. The embodiment of the invention also discloses an evaluation device, equipment and a storage medium of the lightning protection scheme, which effectively determine the optimal lightning protection scheme, thereby improving the power supply reliability and the economical efficiency of the system.
Description
Technical Field
The invention relates to the technical field of direct current power distribution, in particular to a method, a device, equipment and a storage medium for evaluating a lightning protection scheme.
Background
The multi-end flexible direct-current distribution network is convenient for renewable energy consumption, can provide high-quality power supply for sensitive loads, can realize multi-power supply and multi-drop power receiving, and the like, and gradually becomes one of important development trends of a future smart power grid and an energy internet.
At present, flexible direct current power distribution systems are mainly connected by cables, so that internal overvoltage and protection of the systems are researched more. Because the direct current cable line is expensive in manufacturing cost and long in daily operation maintenance and troubleshooting time, an overhead line mode with higher economical efficiency can be considered. However, the overhead line mode has a risk of lightning stroke, so a lightning protection method for the flexible direct current power distribution system is needed to determine an optimal lightning protection scheme, and the power supply reliability and the economical efficiency of the system are improved.
Disclosure of Invention
The embodiment of the invention provides a method, a device, equipment and a storage medium for evaluating a lightning protection scheme, which can effectively determine the optimal lightning protection scheme, thereby improving the power supply reliability and the economical efficiency of a system.
An embodiment of the present invention provides a method for evaluating a lightning protection scheme, including:
determining a plurality of lightning protection schemes corresponding to the current flexible direct current power distribution system according to system parameters of the current flexible direct current power distribution system;
acquiring lightning overvoltage and line lightning-resistant level of a converter station of each lightning protection scheme, and calculating line lightning trip-out rate of each lightning protection scheme according to the line lightning-resistant level;
inputting the line lightning trip-out rate, the convertor station lightning overvoltage and preset economic parameters of each lightning protection scheme into a preset AHP hierarchical analysis model to obtain a weight coefficient of each scheme;
and setting the scheme with the highest weight coefficient as the optimal lightning protection scheme corresponding to the current flexible direct current power distribution system.
As an improvement of the above scheme, the determining, according to the system parameters of the current flexible direct current power distribution system, a plurality of lightning protection schemes corresponding to the current flexible direct current power distribution system specifically includes:
determining a lightning stroke point, a lightning current waveform, a lightning current amplitude and equivalent wave impedance of a lightning channel according to the system parameters, and calculating the highest overvoltage which can be borne by the current flexible direct-current power distribution system;
determining a plurality of lightning protection schemes corresponding to the current flexible direct current power distribution system according to the highest overvoltage; the lightning protection scheme comprises the steps of adopting a cable line, increasing the number of lightning protection columns and erecting a lightning protection line.
As an improvement of the above solution, the preset economic parameters include: investment cost, ease of maintenance, and operational life.
As an improvement of the above-mentioned scheme, the method includes inputting the line lightning trip-out rate, the converter station lightning overvoltage and the preset economic parameter of each lightning protection scheme into a preset AHP hierarchical analysis model to obtain a weight coefficient of each scheme, and specifically includes:
and inputting the line lightning trip-out rate, the converter station lightning overvoltage, the investment cost, the maintenance difficulty and the operation life into a rule layer of the preset AHP hierarchical analysis model, wherein a target layer is an optimal lightning protection scheme to obtain a weight coefficient of each scheme.
As an improvement of the above scheme, before determining a plurality of lightning protection schemes corresponding to the current flexible direct current power distribution system according to the system parameters of the current flexible direct current power distribution system, the method further includes:
and establishing a high-frequency electromagnetic transient simulation model according to basic parameters of a tower at an inlet line section of a converter station of the current flexible direct-current power distribution system, basic parameters of a power distribution line and configuration of a lightning arrester of the converter station.
Another embodiment of the present invention correspondingly provides an evaluation apparatus for a lightning protection scheme, including:
the system comprises an acquisition module, a processing module and a control module, wherein the acquisition module is used for determining a plurality of lightning protection schemes corresponding to the current flexible direct current power distribution system according to system parameters of the current flexible direct current power distribution system;
the calculation module is used for acquiring the lightning overvoltage and the line lightning withstand level of the converter station of each lightning protection scheme and calculating the line lightning trip-out rate of each lightning protection scheme according to the line lightning withstand level;
the processing module is used for inputting the line lightning trip-out rate, the convertor station lightning overvoltage and preset economic parameters of each lightning protection scheme into a preset AHP hierarchical analysis model to obtain a weight coefficient of each scheme;
and the evaluation module is used for setting the scheme with the highest weight coefficient as the optimal lightning protection scheme corresponding to the current flexible direct current power distribution system.
As an improvement of the above scheme, the apparatus further includes:
the construction module is used for establishing a high-frequency electromagnetic transient simulation model according to basic parameters of a tower at an incoming line section of a converter station of the current flexible direct-current power distribution system, basic parameters of a power distribution line and configuration of a lightning arrester of the converter station.
Another embodiment of the present invention provides an evaluation apparatus for a lightning protection scheme, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, where the processor implements the evaluation method for the lightning protection scheme according to the above embodiment of the present invention when executing the computer program.
Another embodiment of the present invention provides a storage medium, where the computer-readable storage medium includes a stored computer program, where when the computer program runs, the apparatus where the computer-readable storage medium is located is controlled to execute the method for evaluating the lightning protection scheme according to the above-described embodiment of the present invention.
Compared with the prior art, the lightning protection scheme evaluation method, the lightning protection scheme evaluation device, the lightning protection equipment and the lightning protection scheme storage medium disclosed by the embodiment of the invention can be used for analyzing a plurality of lightning protection schemes by combining the line lightning trip-out rate, the converter station lightning overvoltage and the preset economic parameters of each lightning protection scheme according to the preset AHP hierarchical analysis model to obtain the optimal lightning protection scheme of the system, so that the power supply reliability and the economical efficiency of the system are improved.
Drawings
Fig. 1 is a schematic flow chart of a method for evaluating a lightning protection scheme according to an embodiment of the present invention;
fig. 2 is a simulation diagram of a ± 10kV multi-terminal flexible dc distribution system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating an analysis of a predetermined AHP hierarchical analysis model according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an evaluation apparatus for a lightning protection scheme according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an evaluation device of a lightning protection scheme according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic flow chart of an evaluation method of a lightning protection scheme according to an embodiment of the present invention.
The embodiment of the invention provides a method for evaluating a lightning protection scheme, which comprises the following steps:
and S10, determining a plurality of lightning protection schemes corresponding to the current flexible direct current power distribution system according to the system parameters of the current flexible direct current power distribution system. In the present embodiment, the current flexible dc power distribution system is a ± 10kV multi-terminal flexible dc power distribution system (see fig. 2 in particular).
Preferably, the determining a plurality of lightning protection schemes corresponding to the current flexible direct current power distribution system according to the system parameters of the current flexible direct current power distribution system specifically includes:
s100, determining a lightning stroke point, a lightning current waveform, a lightning current amplitude and equivalent wave impedance of a lightning channel according to the system parameters, and calculating the highest overvoltage which can be borne by the current flexible direct current power distribution system.
Specifically, the lightning stroke point is taken from each base rod tower of the incoming line segment of the current exchange station; and because the lightning current amplitude is random, the lightning protection scheme is selected under the condition that the flexible direct current power distribution system is subjected to the lightning current which is met for N years. The lightning current amplitude calculation method comprises the following steps:
in the formula, L is the line length of the flexible direct current power distribution system; p is a lightning current amplitude cumulative probability distribution function; n is a radical ofLThe number of lightning falling times of the line is; n is a radical ofgIs the ground flash density; h isTThe height of the tower; and a, b lightning current amplitude cumulative probability distribution function parameters a, b and Ng are selected according to the actual condition of the area.
In the embodiment, the lightning current waveform is 2.6/50 mus negative polarity double exponential wave, and the equivalent wave impedance of the lightning channel is 800 omega in direct attack and counterattack because the lightning resistant level of the flexible direct current power distribution system is low. And (3) taking each base tower (#1 to #6) of the incoming line segment of the current conversion station at the lightning stroke point (see figure 2), calculating counterattack and direct attack at each base tower in the incoming line segment, and taking the highest overvoltage of the equipment under various conditions. The flexible direct current distribution system is subjected to the condition of twenty years of one-time lightning currentAnd (4) selecting a lightning protection scheme. According to the average value N of the local lightning density of Guangdong province from 2008 to 2017g8.13 (times/km)2A), 28.96 a and 3.4 b, the amplitude of the lightning current of the flexible direct current distribution system which is suffered for twenty years can be calculated to be 118 kA.
S101, determining a plurality of lightning protection schemes corresponding to the current flexible direct current power distribution system according to the highest overvoltage; the lightning protection scheme comprises the steps of adopting a cable line, increasing the number of lightning protection columns and erecting a lightning protection line.
In this embodiment, according to the current flexible dc power distribution system, four schemes are adopted, that is, (1) a cable line is adopted, (2) an overhead line + DL lightning arrester column number is increased (4 columns), (3) an overhead line + DL lightning arrester column number is increased (3 columns), (4) an overhead line + tower lightning arrester + tower manual grounding (40 Ω) is adopted.
And S20, acquiring the lightning overvoltage and the line lightning withstand level of the converter station of each lightning protection scheme, and calculating the line lightning trip-out rate of each lightning protection scheme according to the line lightning withstand level.
Specifically, in order to improve the power supply reliability of the flexible direct current power distribution system, only the tripping rate under the condition that the insulator of the bipolar line breaks down due to lightning stroke is considered. The method for calculating the lightning trip-out rate of the line comprises the following steps:
N＝NL(gP1+kPsf)
g is the probability of lightning striking the tower, k is the probability of lightning striking the lead, and when the lightning conductor is not erected, g is 0.5, and k is 0.5; when the lightning conductor is erected, g is 0.25, and the probability of lightning shielding to the conductor can be represented by the formula
Calculated, wherein α is a protection angle hTThe height of the tower; p1Probability of insulator flashover when lightning strikes tower top, PsfThe probability of insulator flashover when the conductor is struck by lightning. The probability of insulator flashover can be determined by formula
Calculated, wherein I is the lineLightning resistance level of (c). It should be noted that the lightning overvoltage and lightning withstand level of the converter station can be obtained through software simulation.
S30, inputting the line lightning trip-out rate, the converter station lightning overvoltage and preset economic parameters of each lightning protection scheme into a preset AHP hierarchical analysis model to obtain a weight coefficient of each scheme; wherein the preset economic parameters include: investment cost, ease of maintenance, and operational life. It should be noted that the investment cost, ease of maintenance, and operational life can all be determined by searching the existing technology.
Preferably, the line lightning trip-out rate, the converter station lightning overvoltage and a preset economic parameter of each lightning protection scheme are input into a preset AHP hierarchical analysis model to obtain a weight coefficient of each scheme, and the method specifically includes:
and inputting the line lightning trip-out rate, the converter station lightning overvoltage, the investment cost, the maintenance difficulty and the operation life into a rule layer of the preset AHP hierarchical analysis model, wherein a target layer is an optimal lightning protection scheme to obtain a weight coefficient of each scheme.
In this example, see fig. 3 and table 1 for the weight coefficient results of the four schemes.
TABLE 1
And S40, setting the scheme with the highest weight coefficient as the optimal lightning protection scheme corresponding to the current flexible direct current power distribution system.
Specifically, the weighting coefficients of each scheme are compared to find the lightning protection scheme with the highest weighting coefficient, which is the optimal lightning protection scheme.
In this embodiment, it is found that the weight coefficient of the first solution is the highest, so that the first solution is the optimal lightning protection solution.
In summary, the optimal lightning protection scheme of the system is obtained by analyzing the plurality of lightning protection schemes according to the preset AHP hierarchical analysis model in combination with the line lightning trip-out rate of each lightning protection scheme, the lightning overvoltage of the converter station and the preset economic parameters, so that the power supply reliability and the economical efficiency of the system are improved.
As an improvement of the above scheme, before determining a plurality of lightning protection schemes corresponding to the current flexible direct current power distribution system according to the system parameters of the current flexible direct current power distribution system, the method further includes:
and establishing a high-frequency electromagnetic transient simulation model according to basic parameters of a tower at an inlet line section of a converter station of the current flexible direct-current power distribution system, basic parameters of a power distribution line and configuration of a lightning arrester of the converter station.
In this embodiment, a high-frequency electromagnetic transient simulation model is established in the PSCAD/EMTDC electromagnetic transient simulation software, so that the current flexible direct-current power distribution system can be conveniently analyzed, and a lightning protection scheme can be conveniently determined.
Fig. 4 is a schematic structural diagram of an evaluation apparatus for a lightning protection scheme according to an embodiment of the present invention.
Another embodiment of the present invention correspondingly provides an evaluation apparatus for a lightning protection scheme, including:
the acquisition module 10 is configured to determine, according to system parameters of a current flexible direct current power distribution system, a plurality of lightning protection schemes corresponding to the current flexible direct current power distribution system.
And the calculating module 20 is configured to obtain the lightning overvoltage and the lightning withstand level of the line of the converter station in each lightning protection scheme, and calculate the line lightning trip-out rate of each lightning protection scheme according to the lightning withstand level of the line.
And the processing module 30 is configured to input the line lightning trip-out rate, the converter station lightning overvoltage, and the preset economic parameter of each lightning protection scheme into a preset AHP hierarchical analysis model, so as to obtain a weight coefficient of each scheme.
And the evaluation module 40 is configured to set the scheme with the highest weight coefficient as the optimal lightning protection scheme corresponding to the current flexible direct current power distribution system.
As an improvement of the above scheme, the apparatus further includes:
the construction module is used for establishing a high-frequency electromagnetic transient simulation model according to basic parameters of a tower at an incoming line section of a converter station of the current flexible direct-current power distribution system, basic parameters of a power distribution line and configuration of a lightning arrester of the converter station.
According to the lightning protection scheme evaluation device provided by the embodiment of the invention, a plurality of lightning protection schemes are analyzed by combining the line lightning trip-out rate, the converter station lightning overvoltage and the preset economic parameters of each lightning protection scheme according to the preset AHP hierarchical analysis model, so that the optimal lightning protection scheme of the system is obtained, and the power supply reliability and the economical efficiency of the system are improved.
Fig. 5 is a schematic view of an evaluation apparatus for a lightning protection scheme according to an embodiment of the present invention. The evaluation device of the lightning protection scheme of the embodiment includes: a processor 11, a memory 12 and a computer program stored in said memory 12 and executable on said processor 11. The processor 11 implements the steps in the above-mentioned evaluation method embodiments of each lightning protection scheme when executing the computer program. Alternatively, the processor 11 implements the functions of the modules/units in the above-described device embodiments when executing the computer program.
Illustratively, the computer program may be divided into one or more modules/units, which are stored in the memory 12 and executed by the processor 11 to accomplish the present invention. The one or more modules/units may be a series of instruction segments of a computer program capable of performing specific functions, and the instruction segments are used for describing the execution process of the computer program in the evaluation equipment of the lightning protection scheme.
The evaluation device of the lightning protection scheme can be a desktop computer, a notebook, a palm computer, a cloud server and other computing devices. The evaluation device of the lightning protection scheme may include, but is not limited to, a processor 11 and a memory 12. It will be understood by those skilled in the art that the schematic diagram is merely an example of the evaluation device of the lightning protection scheme, and does not constitute a limitation of the evaluation device of the lightning protection scheme, and may include more or less components than those shown, or combine some components, or different components, for example, the evaluation device of the lightning protection scheme may further include an input-output device, a network access device, a bus, etc.
The Processor 11 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like, the processor is a control center of the evaluation equipment of the lightning protection scheme, and various interfaces and lines are used for connecting various parts of the evaluation equipment of the whole lightning protection scheme.
The memory 12 may be used to store the computer programs and/or modules, and the processor may implement various functions of the evaluation device of the lightning protection scheme by executing or executing the computer programs and/or modules stored in the memory 12 and calling data stored in the memory 12. The memory 12 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 12 may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
Wherein, the module/unit integrated with the evaluation equipment of the lightning protection scheme can be stored in a computer readable storage medium if the module/unit is implemented in the form of a software functional unit and sold or used as an independent product. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, etc.
It should be noted that the above-described device embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiment of the apparatus provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, and may be specifically implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement it without inventive effort.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (9)
1. A method for evaluating a lightning protection scheme is characterized by comprising the following steps:
determining a plurality of lightning protection schemes corresponding to the current flexible direct current power distribution system according to system parameters of the current flexible direct current power distribution system;
acquiring lightning overvoltage and line lightning-resistant level of a converter station of each lightning protection scheme, and calculating line lightning trip-out rate of each lightning protection scheme according to the line lightning-resistant level;
inputting the line lightning trip-out rate, the convertor station lightning overvoltage and preset economic parameters of each lightning protection scheme into a preset AHP hierarchical analysis model to obtain a weight coefficient of each scheme;
and setting the scheme with the highest weight coefficient as the optimal lightning protection scheme corresponding to the current flexible direct current power distribution system.
2. The method for evaluating a lightning protection scheme according to claim 1, wherein the determining a plurality of lightning protection schemes corresponding to the current flexible direct current power distribution system according to the system parameters of the current flexible direct current power distribution system specifically includes:
determining a lightning stroke point, a lightning current waveform, a lightning current amplitude and equivalent wave impedance of a lightning channel according to the system parameters, and calculating the highest overvoltage which can be borne by the current flexible direct-current power distribution system;
determining a plurality of lightning protection schemes corresponding to the current flexible direct current power distribution system according to the highest overvoltage; the lightning protection scheme comprises the steps of adopting a cable line, increasing the number of lightning protection columns and erecting a lightning protection line.
3. The method for evaluating a lightning protection scheme according to claim 1, wherein the preset economic parameters include: investment cost, ease of maintenance, and operational life.
4. The method for evaluating a lightning protection scheme according to claim 3, wherein the method for inputting the line lightning trip-out rate, the converter station lightning overvoltage and the preset economic parameters of each lightning protection scheme into a preset AHP hierarchical analysis model to obtain the weight coefficient of each scheme specifically comprises:
and inputting the line lightning trip-out rate, the converter station lightning overvoltage, the investment cost, the maintenance difficulty and the operation life into a rule layer of the preset AHP hierarchical analysis model, wherein a target layer is an optimal lightning protection scheme to obtain a weight coefficient of each scheme.
5. The method for evaluating a lightning protection scheme according to claim 1, wherein before determining the plurality of lightning protection schemes corresponding to the current flexible direct current power distribution system according to the system parameters of the current flexible direct current power distribution system, the method further comprises:
and establishing a high-frequency electromagnetic transient simulation model according to basic parameters of a tower at an inlet line section of a converter station of the current flexible direct-current power distribution system, basic parameters of a power distribution line and configuration of a lightning arrester of the converter station.
6. An evaluation device of a lightning protection scheme, comprising:
the system comprises an acquisition module, a processing module and a control module, wherein the acquisition module is used for determining a plurality of lightning protection schemes corresponding to the current flexible direct current power distribution system according to system parameters of the current flexible direct current power distribution system;
the calculation module is used for acquiring the lightning overvoltage and the line lightning withstand level of the converter station of each lightning protection scheme and calculating the line lightning trip-out rate of each lightning protection scheme according to the line lightning withstand level;
the processing module is used for inputting the line lightning trip-out rate, the convertor station lightning overvoltage and preset economic parameters of each lightning protection scheme into a preset AHP hierarchical analysis model to obtain a weight coefficient of each scheme;
and the evaluation module is used for setting the scheme with the highest weight coefficient as the optimal lightning protection scheme corresponding to the current flexible direct current power distribution system.
7. The apparatus for evaluating a lightning protection scheme according to claim 6, further comprising:
the construction module is used for establishing a high-frequency electromagnetic transient simulation model according to basic parameters of a tower at an incoming line section of a converter station of the current flexible direct-current power distribution system, basic parameters of a power distribution line and configuration of a lightning arrester of the converter station.
8. An evaluation device of a lightning protection scheme, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, the processor implementing the evaluation method of the lightning protection scheme according to any one of claims 1 to 5 when executing the computer program.
9. A computer-readable storage medium, comprising a stored computer program, wherein when the computer program runs, the computer-readable storage medium controls a device to execute the method for evaluating a lightning protection scheme according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010212324.7A CN111563646A (en) | 2020-03-24 | 2020-03-24 | Lightning protection scheme evaluation method, device, equipment and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010212324.7A CN111563646A (en) | 2020-03-24 | 2020-03-24 | Lightning protection scheme evaluation method, device, equipment and storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111563646A true CN111563646A (en) | 2020-08-21 |
Family
ID=72074114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010212324.7A Pending CN111563646A (en) | 2020-03-24 | 2020-03-24 | Lightning protection scheme evaluation method, device, equipment and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111563646A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112257141A (en) * | 2020-09-24 | 2021-01-22 | 合肥工业大学 | Electromagnetic transient simplified modeling method for high-speed railway viaduct pier lightning stroke |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106228305A (en) * | 2016-07-26 | 2016-12-14 | 中国葛洲坝集团电力有限责任公司 | A kind of appraisal procedure of Lightning stroke Protection Measures for Over-Head Lines |
| US9736791B1 (en) * | 2016-03-24 | 2017-08-15 | Veniam, Inc. | Systems and methods for transmission power adaptation in the network of moving things |
| CN109064056A (en) * | 2018-08-31 | 2018-12-21 | 海南电网有限责任公司电力科学研究院 | A kind of Lightning stroke Protection Measures for Over-Head Lines selection method based on gray relative analysis method |
| CN109190243A (en) * | 2018-08-31 | 2019-01-11 | 海南电网有限责任公司电力科学研究院 | A kind of Lightning stroke Protection Measures for Over-Head Lines selection method based on Evaluation formula |
| CN109753703A (en) * | 2018-12-21 | 2019-05-14 | 广东电网有限责任公司 | A kind of distribution line lightning protection grade appraisal procedure |
-
2020
- 2020-03-24 CN CN202010212324.7A patent/CN111563646A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9736791B1 (en) * | 2016-03-24 | 2017-08-15 | Veniam, Inc. | Systems and methods for transmission power adaptation in the network of moving things |
| CN106228305A (en) * | 2016-07-26 | 2016-12-14 | 中国葛洲坝集团电力有限责任公司 | A kind of appraisal procedure of Lightning stroke Protection Measures for Over-Head Lines |
| CN109064056A (en) * | 2018-08-31 | 2018-12-21 | 海南电网有限责任公司电力科学研究院 | A kind of Lightning stroke Protection Measures for Over-Head Lines selection method based on gray relative analysis method |
| CN109190243A (en) * | 2018-08-31 | 2019-01-11 | 海南电网有限责任公司电力科学研究院 | A kind of Lightning stroke Protection Measures for Over-Head Lines selection method based on Evaluation formula |
| CN109753703A (en) * | 2018-12-21 | 2019-05-14 | 广东电网有限责任公司 | A kind of distribution line lightning protection grade appraisal procedure |
Non-Patent Citations (2)
| Title |
|---|
| 刘刚 等: "改进层次分析法在配网线路防雷评估中的应用", 《华南理工大学学报( 自然科学版)》 * |
| 肖芳磊: "中压柔性直流配电网过电压与绝缘配合方案研究", 《中国优秀博硕士学位论文全文数据库(硕士)工程科技Ⅱ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112257141A (en) * | 2020-09-24 | 2021-01-22 | 合肥工业大学 | Electromagnetic transient simplified modeling method for high-speed railway viaduct pier lightning stroke |
| CN112257141B (en) * | 2020-09-24 | 2021-05-14 | 合肥工业大学 | Electromagnetic transient simplified modeling method for high-speed railway viaduct pier lightning stroke |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109670213B (en) | Multi-machine equivalent modeling method and device for wind power plant | |
| CN107862103B (en) | Simulation model generation method and system based on ADPSS | |
| CN108647820A (en) | Based on the distributed generation resource addressing constant volume optimization method and system for improving particle cluster algorithm | |
| CN111751638A (en) | Analysis method, device and equipment for lightning trip-out rate of power transmission line and storage medium | |
| CN112052555A (en) | Simulation method and device for lightning electromagnetic transient model of power transmission line | |
| CN106503279A (en) | A kind of modeling method for transient stability evaluation in power system | |
| CN111563646A (en) | Lightning protection scheme evaluation method, device, equipment and storage medium | |
| CN106845041B (en) | MMC-based real-time simulation system, simulation method and MMC valve simulator | |
| CN110955959A (en) | Method and device for rapidly generating and calculating faults of power system in batches | |
| CN105356508B (en) | Power grid wind access evaluation system and its method based on PSD-BPA | |
| CN108680788A (en) | Harmonic voltage transmission level computational methods and device | |
| Datsios et al. | Estimation of the minimum backflashover current of 150 and 400 kV overhead transmission lines through ATP-EMTP simulations: Effect of the lightning stroke location along line spans | |
| CN112464545A (en) | Layout method, system, equipment and medium for cables and transformer substation of offshore wind farm | |
| CN110555242A (en) | Method, device and equipment for evaluating wind resistance of old tower and storage medium | |
| CN109344875B (en) | Method and device for generating solar wind power output time sequence based on cluster analysis | |
| CN109670229B (en) | Method for estimating ground lightning falling density near overhead bridge overhead contact system of high-speed railway | |
| CN109031062B (en) | Method and system for calculating 50% discharge voltage under tower gap operation impulse voltage | |
| CN108448582A (en) | Harmonic detecting system and harmonic wave processing system | |
| CN111538560B (en) | Virtual machine deployment method and device, electronic equipment and storage medium thereof | |
| CN117131628B (en) | Wind resistance evaluation method, device and equipment for photovoltaic power generation device and storage medium | |
| CN110929219A (en) | Distribution network equipment group state evaluation method, device and system and computer storage medium | |
| CN110048431B (en) | Reactive power optimization method, device, equipment and storage medium for power distribution network | |
| CN114418194B (en) | Tower damage prediction method and device based on data driving and model driving | |
| TWI790743B (en) | Calculation method of grid-connectable capacity of feeder | |
| CN111753391B (en) | Power transmission line design method and system based on maximum field intensity of surface of split conductor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200821 |
|
| RJ01 | Rejection of invention patent application after publication |