CN107563035A - A kind of Converter Station Lightning Protection performance simulation computational methods - Google Patents

A kind of Converter Station Lightning Protection performance simulation computational methods Download PDF

Info

Publication number
CN107563035A
CN107563035A CN201710740578.4A CN201710740578A CN107563035A CN 107563035 A CN107563035 A CN 107563035A CN 201710740578 A CN201710740578 A CN 201710740578A CN 107563035 A CN107563035 A CN 107563035A
Authority
CN
China
Prior art keywords
building
electrical equipment
lightning
current conversion
conversion station
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
Application number
CN201710740578.4A
Other languages
Chinese (zh)
Inventor
万磊
谭波
范冕
王磊
娄颖
李振强
周沛洪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
Original Assignee
State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, China Electric Power Research Institute Co Ltd CEPRI filed Critical State Grid Corp of China SGCC
Priority to CN201710740578.4A priority Critical patent/CN107563035A/en
Publication of CN107563035A publication Critical patent/CN107563035A/en
Pending legal-status Critical Current

Links

Landscapes

  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

The invention provides a kind of Converter Station Lightning Protection performance simulation computational methods, the wherein simulation model of a building or electrical equipment established in the current conversion station；To the building or electrical equipment injection simulation lightning current, and the simulation lightning current is inputted to simulation model；The simulation model calculates the equivalent impulse resistance of corresponding building or electrical equipment according to the simulation lightning current；The lightning protection properties of corresponding building or lightningproof device are changed according to determining the equivalent impulse resistance.The present invention is by establishing corresponding building or electrical equipment simulation model in current conversion station, pass through the simulation lightning current data of injection, according to R=U/I formula, calculate equivalent impulse resistance, compare equivalent impulse resistance and threshold range as defined in specification, the reasonability of corresponding building or lightningproof device in current conversion station can be accurately checked, technical support is provided to check the lightning protection properties of corresponding building or lightningproof device in current conversion station.

Description

A kind of Converter Station Lightning Protection performance simulation computational methods
Technical field
The present invention relates to extra-high voltage direct-current power engineering emulational computation field, in particular to a kind of current conversion station Lightning protection properties emulated computation method.
Background technology
At present, current conversion station is the hinge in direct current power system, once Lightning Fault occurs, it is possible to cause big face Product has a power failure, and influences extremely serious.So current conversion station requirement has reliable Lighting Protection Measures.The damage to crops caused by thunder of current conversion station comes from two Aspect, first, thunder directly hits on change of current station equipment and causes the damage of station equipment, abbreviation direct lightning strike；Second, transmission of electricity is arrived in thunderbolt On the shaft tower and lightning conducter of circuit, insulator arc-over (counterattack) is caused；Or (shielding) caused by thunder and lightning is directly hit on wire Ripple, lightning wave are delivered to current conversion station along transmission line of electricity, and produce lightning surge on change of current station equipment and cause apparatus insulated layer Damage, this abbreviation Intruding wave.So in terms of the Lighting Protection Measures of change of current station equipment have two, the protection of a direct lightning strike, separately One be Lightning Incoming Wave protection.
Protection for direct lightning strike, general way is to install lightning rod and lightning conducter in current conversion station both at home and abroad.From China The operating experience of the transformer station's direct lightning strike protection of a large amount of transformer stations of 110kV~1000kV for many years is understood, according to the existing rule in China Method as defined in journey, be mounted with the transformer station of lightning rod and lightning conducter, its direct lightning strike protection effect be it is reliable, can but still have Less lightning current can occur and bypass lightning-arrest needlework combination, hit in building top.Now building roof face is as arrester, Lightning current is imported by the earth by outside vertical surface of building and downlead etc..If now lightning current is excessive, building can be made Current potential lifting, cause the people in building and the electric discharge danger of electrical equipment.
China Patent Publication No.：The A of CN 104538922, the present invention relates to a kind of current conversion station lighting protection method and device, Methods described comprises the following steps：It is determined that the three-dimensional lighting protection space of covering current conversion station.In the outer of the lighting protection space Enclose and lighting protection structure is set, the lighting protection structure is included from the lighting protection top of space to lighting protection space bottom Portion is arranged in order more than one lightning conducter of setting, and the lightning conducter is electrically connected to lightning-arrest terminal, the lightning-arrest terminal ground connection.Adopt It is empty to lighting protection by being arranged on lighting protection top of space with current conversion station lighting protection method and device of the present invention Between bottom be arranged in order more than one lightning conducter of setting, top lightning conducter prevents lighting protection top of space by direct lightning strike, Lightning conducter below top prevents lighting protection space sidepiece from, by sideflash, can cover lightning protection blind spot, can prevent straight The shielding of thunder side is hit, current conversion station is obtained comprehensive lightning protection, reduces lightning fault probability.
Foregoing invention and wherein one building or the lightning protection properties of lightningproof device in unresolved verification current conversion station The problem of.
The content of the invention
In consideration of it, the present invention proposes a kind of Converter Station Lightning Protection performance simulation computational methods, it is intended to solves to check current conversion station Wherein one building or lightningproof device lightning protection properties the problem of.
On one side, the present invention proposes a kind of Converter Station Lightning Protection performance simulation computational methods, establishes in the current conversion station The wherein simulation model of a building or electrical equipment；Corresponding building or electrical equipment the injection mould into the current conversion station Intend lightning current, and the simulation lightning current is inputted to the emulation of corresponding building or electrical equipment in the current conversion station Model；The simulation model calculates corresponding building or electrical equipment in the current conversion station according to the simulation lightning current Equivalent impulse resistance；Corresponding building or lightningproof dress in the current conversion station is determined according to the equivalent impulse resistance The lightning protection properties put.
Further, the length and positional number of the wherein building or electrical equipment in the current conversion station are gathered According to establishing the emulation mould of corresponding building or electrical equipment in the current conversion station according to the length and position data Type.
Further, the simulation lightning current is simulation thunder and lightning around wherein a building or the electricity in the current conversion station After the lightning protection device of gas equipment, the lightning current on a wherein building or the electrical equipment in current conversion station is attacked directly.
Further, in the wherein simulation model of a building or electrical equipment in the current conversion station, simulation is established Lightning current analysis program, ground potential rise calculation procedure and equivalent impulse resistance calculation procedure；The simulation lightning current point The program analysis simulation lightning current data are analysed, then, the ground potential rises calculation procedure and calculates the simulation lightning current The ground potential liter of the building or electrical equipment corresponding to data, afterwards, the equivalent impulse resistance calculation procedure calculate The equivalent impulse resistance data of the building or electrical equipment corresponding to the simulation lightning current data.
Further, it is first before the wherein simulation model of a building or electrical equipment in the current conversion station is established First determine the lightning protection grade of corresponding building or electrical equipment in the current conversion station.
Further, number of lightning strokes is expected according to the wherein year of a building or electrical equipment in the current conversion station, really The lightning protection grade of corresponding building or electrical equipment in the fixed current conversion station；The year, estimated number of lightning strokes was calculated as follows：N =k × Ng×Ae, wherein, N be the building or electrical equipment year estimated number of lightning strokes, k is correction coefficient, NgBuilt to be described Build the annual density of thing or electrical equipment their location thunderbolt the earth, AeFor the building or the identical thunder of electrical equipment intercept Hit the equivalent area of number.
Further, the mould is injected at the wherein edge tip of a building or electrical equipment into the current conversion station Intend lightning current, and by the data input of the simulation lightning current to building or electrical equipment accordingly in the current conversion station Simulation model in.
Further, the institute that the wherein simulation model of a building or electrical equipment analysis in the current conversion station collects The data of simulation lightning current are stated, calculation procedure is risen by the ground potential in the simulation model, calculates phase in the current conversion station The building or the ground potential of electrical equipment answered appreciate.
Further, the equivalent impulse resistance calculation procedure in the simulation model appreciates according to the ground potential, calculates The equivalent impulse resistance value of corresponding building or electrical equipment in the current conversion station, or, according to the simulation lightning current The wherein ground potential of a building or electrical equipment in value and the current conversion station is appreciated, and institute is directly calculated according to R=U/I formula The equivalent impulse resistance value of corresponding building or electrical equipment in current conversion station is stated, in the R=U/I formula：R is described equivalent Impulse resistance value, U appreciate for the ground potential, and I is the simulation lightning current value.
Further, according to the wherein building or the equivalent impulse resistance of electrical equipment in the current conversion station, it is determined that The lightning protection properties of the lightning protection device of corresponding building or electrical equipment in the current conversion station；Built according to as defined in specification to described The requirement of thing or electrical equipment impulse earthed resistance threshold value is built, judges corresponding building or electrical equipment in the current conversion station Whether equivalent impulse resistance exceedes threshold value as defined in the specification；If exceeding threshold value as defined in the specification, changed described in adjustment The lightning protection device of corresponding building or electrical equipment in stream station, and recalculate corresponding building or electricity in the current conversion station The equivalent impulse resistance of gas equipment, until the equivalent impulse resistance is less than threshold value as defined in the specification；If not less than described Threshold value as defined in specification, then it need not adjust the lightning protection device of corresponding building or electrical equipment in the current conversion station.
Further, by way of more conversion materials, change layout, to reduce the wherein building in the current conversion station Or the equivalent impulse resistance of the lightning protection device of electrical equipment, improve corresponding building or electrical equipment in the current conversion station The lightning protection properties of lightning protection device.
Further, using the strong material of copper or electric conductivity, or in the increase current conversion station corresponding building or The mode of the contact surface area of each junction of the lightning protection device of electrical equipment, reduce in the current conversion station corresponding building or The contact resistance of each junction of lightning protection device of electrical equipment, reduce the contact resistance to corresponding building in current conversion station or The influence of the equivalent impulse resistance of the lightning protection device of electrical equipment.
Further, the outside lightning protection device of the wherein building in the current conversion station, internal lighting protection device, electrically set Standby and electronic system shares same earthing or grounding means.
Further, the earth lead of the outside lightning protection device mutually senses with lightning protection electric installation, the outside lightning protection dress The earth lead put circularizes grounding body around building laying.
Beneficial effects of the present invention, the present invention is according to the wherein length of a building or electrical equipment in current conversion station And position data establishes corresponding building or electrical equipment simulation model in current conversion station, and using edge tip injection simulation The method of lightning current, by the analysis in simulation model and calculation procedure, the ground of calculating current conversion station building or electrical equipment Potential rise, then according to R=U/I formula, the equivalent impact that corresponding building or electrical equipment in current conversion station is calculated connects Ground resistance, by comparing equivalent impulse resistance value and threshold range value as defined in specification, can accurately it check corresponding in current conversion station The reasonability of building or lightningproof device, to check corresponding building or lightningproof device in current conversion station Lightning protection properties provide technical support.
On the other hand, there is provided one kind stream station valve Room lightning protection properties emulated computation method, the change of current is established in CDEGS programs Stand valve Room simulation model, by computational methods of the present invention, after valve Room simulation model is established, determine that converter station valve hall is meeting with Equivalent impulse earthed resistance during thunderbolt is met, for the lightning protection reliability of analysis converter station valve hall building or electrical equipment, lightning protection Whether the lightning-arrest needlework combination of device meets that lightning protection requirement provides technical support.
On the other hand, by the simulation model of corresponding building or electrical equipment in current conversion station, establishing simulation thunder Electric amperometry program, ground potential rise calculation procedure and equivalent impulse resistance calculation procedure, and simulation lightning current is counted Calculate, so as to fast and accurately calculate the equivalent impulse resistance of corresponding building or electrical equipment in stream station, save school Test the time of the lightning protection properties of lightning protection device.
On the other hand, present invention also offers a kind of method, by changing the set-up mode of lightning protection device, contact electricity is reduced Resistance so that the layout of lightning protection device is more reasonable, effectively raises the lightning protection properties of lightning protection device；Judging equivalent impact simultaneously When resistance does not meet threshold value as defined in specification, lightning protection device is adjusted, and recalculate the equivalent impulse resistance.Recalculating During equivalent impulse resistance, it need to only simulate in the side that the input of lightning current has had built up in model, you can obtain new equivalent Impulse resistance data, the lightning protection properties of lightning protection device in current conversion station are not only accurately verified, while greatly saved and recalculate Time needed for data.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this area Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 is the schematic flow sheet of Converter Station Lightning Protection performance simulation computational methods of the embodiment of the present invention；
Fig. 2 is the current conversion station floor map of Converter Station Lightning Protection performance simulation computational methods of the embodiment of the present invention；
Fig. 3 is the stream of the determination lightning protection device lightning protection properties of Converter Station Lightning Protection performance simulation computational methods of the embodiment of the present invention Journey schematic diagram；
Fig. 4 is the equivalent impulse resistance flow signal of judgement of Converter Station Lightning Protection performance simulation computational methods of the embodiment of the present invention Figure；
Fig. 5 is the valve Room model schematic of Converter Station Lightning Protection performance simulation computational methods of the embodiment of the present invention；
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in accompanying drawing Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure Completely it is communicated to those skilled in the art.It should be noted that in the case where not conflicting, embodiment in the present invention and Feature in embodiment can be mutually combined.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in fig.1, the schematic flow sheet of Converter Station Lightning Protection performance simulation computational methods of the embodiment of the present invention, S101 are built The wherein simulation model of a building or electrical equipment in the current conversion station is found, S102 is built accordingly into the current conversion station Thing or electrical equipment injection simulation lightning current, and the simulation lightning current is inputted to building accordingly in the current conversion station The simulation model of thing or electrical equipment, simulation model described in S103 calculate phase in the current conversion station according to the simulation lightning current The building or the equivalent impulse resistance of electrical equipment answered, S104 determine phase in the current conversion station according to the equivalent impulse resistance The building or the lightning protection properties of lightningproof device answered.
Specifically it is first determined the lightning protection grade of the wherein building or electrical equipment in current conversion station；Further, The length and position data of the wherein building or electrical equipment in current conversion station are gathered, passes through length and position Put the wherein simulation model of a building or electrical equipment that data are established in current conversion station；Further, it is corresponding in current conversion station Building or electrical equipment simulation model in, establish simulation lightning current analysis program, ground potential rises calculation procedure and Equivalent impulse resistance calculation procedure；Further, at the wherein pointed edge of a building or electrical equipment into current conversion station, The electric current of artificial injection simulation thunder and lightning, this simulation lightning current are simulation when wherein a building or the electrical equipment in current conversion station During by being struck by lightning, thunder-strike current is attacked directly in the change of current around the wherein lightning protection device of a building or electrical equipment in current conversion station The equivalent thunder-strike current on a wherein building or electrical equipment in standing；Further, built by wherein one in current conversion station The simulation lightning current analysis program in the simulation model of thing or electrical equipment is built, analyzes the simulation lightning current data, so Afterwards, the simulation lightning current data after lightning current analysis program is analyzed will be simulated, is input to the ground electricity of above-mentioned simulation model Position is risen in calculation procedure；Further, the simulation obtained after calculation procedure calculating current parser analysis is risen by ground potential Lightning current data, and according to it is described simulation lightning current data calculate this simulation lightning current data corresponding to building or The ground potential of electrical equipment rises data；Further, calculation procedure is risen by ground potential, obtains corresponding building or electrically set Standby ground potential rises data and then by equivalent impulse resistance calculation procedure, calculates building corresponding to the potential rise data of this place Build the equivalent impulse resistance data of thing or electrical equipment；Further, obtaining corresponding building in current conversion station or electrically setting After standby equivalent impulse resistance data, according to corresponding to the lightning protection grade of corresponding building or electrical equipment in current conversion station Threshold value as defined in the specification of equivalent impulse resistance, determine the equivalent impulse resistance of corresponding building or electrical equipment in current conversion station Whether numerical value exceedes the threshold value of equivalent impulse resistance as defined in specification, adjusts in current conversion station if the threshold value is exceeded and builds accordingly The lightning protection device of thing or electrical equipment is built, if not less than the threshold value, it is determined that corresponding building or electrically set in current conversion station Standby lightning protection device meets code requirement, so as to pass through the equivalent impulse resistance of corresponding building or electrical equipment in current conversion station Numerical value judge the lightning protection properties of corresponding building or lightningproof device in current conversion station.Those skilled in the art can be with What is understood is, it is determined that a wherein building in current conversion station or after the lightning protection grade of electrical equipment, in current conversion station wherein Threshold value as defined in the specification of the equivalent impulse resistance of one building or electrical equipment also determines therewith.
Using above-mentioned Converter Station Lightning Protection performance simulation computational methods, by establish a wherein building in current conversion station or The simulation model of electrical equipment, then by simulating wherein a building or electrical equipment in thunderbolt current conversion station, in simulation model The data of middle analysis mode lightning current, and by simulation model calculate this simulation lightning current data corresponding to current conversion station in A wherein building or electrical equipment equivalent impulse resistance, wherein one in current conversion station is determined by this equivalent impulse resistance The lightning protection properties of building or lightningproof device, so as to accurately check the rationally distributed of Converter Station Lightning Protection device Property, effectively raise the lightning protection properties of current conversion station, also, pass through the imitative of the corresponding building in current conversion station or electrical equipment In true mode, simulation lightning current analysis program, ground potential liter calculation procedure and equivalent impulse resistance calculation procedure are established, it is right Simulation lightning current is calculated, so as to fast and accurately calculate the equivalent of corresponding building or electrical equipment in stream station Impulse resistance, save the time of the lightning protection properties of verification lightning protection device.
With reference to shown in Fig. 2, the current conversion station floor map of Converter Station Lightning Protection performance simulation computational methods of the embodiment of the present invention, Current conversion station typically build have the valve Room 20, control building 21, converter power transformer 24, alternating-current switch field 22, it is main ground connection gauze 10 and its His building or electrical equipment 23.
Specifically, the above-mentioned valve Room 20 being previously mentioned, control building 21, converter power transformer 24, alternating-current switch field 22, it is main On ground wire 10 and other buildings or electrical equipment 23, lightning protection device is fitted with, to avoid the building or electricity When gas equipment is by being struck by lightning, the damage of building or electrical equipment is caused, causes work in current conversion station work paralysis or current conversion station Make the injures and deaths of personnel.Further, the general top that can all hit in building or electrical equipment of thunderbolt, also, thunder and lightning can be bigger Probability hits higher building or electrical equipment, therefore the lightning protection device of building or electrical equipment is typically all erected at and built The top of thing or electrical equipment is built, lightning current is received by lightning protection device, and by the ground wire in lightning protection device, by thunder Electric current imports the earth, or, importing is embedded among the main ground connection gauze 10 under building or electrical equipment, so as to avoid thunder Electricity attacks the Lightning disservice of building or electrical equipment directly.But lightning current is received by lightning protection device and passes through ground wire When lightning current is imported among the earth or main ground connection gauze 10, Ground Electric Potential Rise, building or electrical equipment institute can be caused Place position ground potential can increase, ground potential rise can destroy in the range of Ground Electric Potential Rise building, electrically, electronics and Hardware, when people is in the range of Ground Electric Potential Rise, it is possible to create step voltage, threat to life safety.And work as the thunder When hitting electric current inflow the earth, the impulse earthed resistance of building or electrical equipment in current conversion station can influence the feelings of Ground Electric Potential Rise Condition, therefore related specifications define the secure threshold scope of the impulse earthed resistance of building or electrical equipment.
Further, according to building or the different height or significance level of electrical equipment, the erection of its lightning protection device Mode also and differs.Lightning protection device can effectively avoid the harm of thunderbolt in Many times, but thunderbolt can be avoided preventing sometimes Thunder device, attack directly on building or electrical equipment, cause building or the Ground Electric Potential Rise of electrical equipment present position, exchange Building or electrical equipment and personnel in stream station damage.Therefore, in current conversion station building or electrical equipment lightning protection The reasonability of the distribution of device, and its barrier propterty are particularly important, and are imitated by Converter Station Lightning Protection performance of the present invention True computational methods, after each lightning protection device test in current conversion station, the lightning protection properties of the lightning protection device can be accurately drawn, And the lightning protection device is checked.
With reference to shown in Fig. 3, the determination lightning protection device lightning protection of Converter Station Lightning Protection performance simulation computational methods of the embodiment of the present invention The schematic flow sheet of performance.S201 determines the lightning protection grade of the wherein building or electronic equipment in current conversion station.S202 according to The length and position data of wherein a building or electrical equipment in the current conversion station establish phase in the current conversion station The building or the simulation model of electrical equipment answered, a wherein buildings or electrical equipment injection simulation of the S203 into current conversion station After thunder and lightning is around the wherein lightning protection device of a building or electrical equipment in the current conversion station, attack directly corresponding in current conversion station Lightning current on building or electrical equipment, the emulation of wherein a building or electrical equipments of the S204 in the current conversion station In model, simulation lightning current analysis program, ground potential liter calculation procedure and equivalent impulse resistance calculation procedure are established, Simulated described in S205 and lightning current data are simulated described in lightning current parser analysis, ground potential described in S206 rises calculation procedure Calculate the ground potential liter of the building or electrical equipment corresponding to the simulation lightning current data, equivalent punching described in S207 Hit the equivalent impact that resistance calculations program calculates the building or electrical equipment corresponding to the simulation lightning current data Resistance data, S208 is according to the wherein building or the equivalent impulse resistance of electrical equipment in the current conversion station, described in judgement Whether equivalent impulse resistance exceedes threshold value as defined in the specification, determines corresponding building or electrical equipment in the current conversion station Lightning protection device lightning protection properties.
Specifically, S201 determines the lightning protection grade of the wherein building or electronic equipment in current conversion station.Changed in foundation Before the wherein simulation model of a building or electrical equipment in stream station, it is first determined wherein one building in the current conversion station The lightning protection grade of thing or electrical equipment.Further, it is estimated according to the wherein year of a building or electrical equipment in current conversion station Number of lightning strokes, determine the lightning protection grade of corresponding building or electrical equipment in current conversion station.Year, estimated number of lightning strokes was counted as the following formula Calculate：N=k × Ng×Ae, wherein, N is the building or electrical equipment year estimated number of lightning strokes, and k is correction coefficient, general In the case of take 1；Soil resistivity smaller part, cropping-out of the groundwater, native mountain top under river bank, lakeside, hillside or in mountain region Building at portion, mountain valley air port, and especially moist building take 1.5；Metal Roof is built without the post and panel structure of ground connection Build thing and take 1.7；Isolated building positioned at mountain top or wilderness takes 2；NgIt is big for the building or the thunderbolt of electrical equipment their location Annual density (secondary/the km on ground2/a)；AeFor the equivalent area of the building or the identical number of lightning strokes of electrical equipment intercept (km2)。
Specifically, the annual density of building or electrical equipment their location thunderbolt the earth first should be by working as ground vapour As platform, data of standing determination, if without this data, can be calculated as follows：Ng=0.1 × Td, T in formuladFor annual thunderstorm day, according to Local meteorological observatory, data of standing determine (d/a).
The equivalent area of building or the identical number of lightning strokes of electrical equipment intercept should be what its physical plane product outwards expanded Area, its computational methods are：
1) when depth of building is less than 100m, its expansion width and equivalent area per side should be calculated by following equationD is building in formula The width (m) expanded per side, L, W, H are respectively the length, width and height (m) of building.
2) when the height of building is less than 100m, while there is contour or lower than it building on its periphery in the range of 2D, These buildings are not in considered building with hr=100 (m), A is calculated to obtain by above formulae(D/2) × (these building institutes can be subtracted Consider the parallel length summation in meters of the building length of side) × 10-6(km2).When surrounding does not all have not contour or ratio in the range of 2D During its other low building, its equivalent area can be calculated as follows：
3) when the height of building is less than 100m, while there are other buildings higher than it on its periphery in the range of 2D, By formula calculate equivalent area can subtract D × (these buildings and the elongated parallel length summation in meters of institute's consideration building) × 10-6(km2).When surrounding has other buildings higher than it in the range of 2D, its equivalent area can be calculated as follows：Ae =LW × 10-6。
4) when building height is equal to or more than 100m, its expansion width per side should be by the altimeter equal to building Calculate；The equivalent area of building should be calculated as follows：
Ae=[LW+2H (L+W)+π H2]×10-6
5) when building height is equal to or more than 100m, while its periphery has contour or lower than it other to build in the range of 2H Build thing, and not when determined building is equal in the protection domain of building height (m) with ball radius, by above formula calculate etc. Effect area can subtract (H/2) × (these buildings determine the parallel length summation in meters of the building length of side) × 10-6 (km2)
When surrounding has other contour or lower than it buildings in the range of 2H, its equivalent area can be counted as the following formula Calculate：
6) when the height of building is equal to or more than 100m, while there are other buildings higher than it on its periphery in the range of 2H During thing, H × (these other buildings are with the institute determination building length of side parallel in meters can be subtracted by calculating equivalent area by above formula Length summation) × 10-6(km2)
When surrounding has other building moment higher than it by A in the range of 2He=LW × 10-6Calculate.
7) when each position of building it is high different when, should be calculated point by point along building periphery it is maximum expand width, its is equivalent Area is by every maximum areal calculation for expanding width outer end connecting line and being surrounded.
Specifically, it is expected that number of lightning strokes is more than 0.25 time/a house, office building, general civil building and general Property industrial building is two class protection of buildings against lightning.Above-mentioned computational methods and process are only illustrated by example of building, can be with Understand, this method is equally applicable to electrical equipment.
S202 is built according to the length and position data of wherein a building or electrical equipment in the current conversion station The simulation model of corresponding building or electrical equipment in the current conversion station is found, specifically, according to wherein one in current conversion station The length of building or electrical equipment, width, height and the related data information of the position in the current conversion station of place, establish the change of current The wherein simulation model of a building or electrical equipment in standing.With reference to shown in Fig. 2, further, its in above-mentioned current conversion station In the length of a building or electrical equipment, width, height and the related data information of the position in the current conversion station of place, can be with By the related building or the information of electrical equipment counted in the construction drawing or current conversion station of current conversion station, directly obtain above-mentioned Required data, the wherein simulation model of a building or electrical equipment established in current conversion station；Or drawing can not passed through Or the wherein length of a building or electrical equipment, width, height and institute in the information acquisition current conversion station of relative recording During the related data information of the position in current conversion station, by field survey, required relevant information is obtained, establishes current conversion station The interior wherein simulation model of a building or electrical equipment.
A wherein buildings or electrical equipment injection simulation thunder and lightning of the S203 into current conversion station are around in the current conversion station Wherein after the lightning protection device of a building or electrical equipment, the thunder on corresponding building or electrical equipment in current conversion station is attacked directly Electric current.Specifically, after the wherein building or electrical equipment simulation model in stream station is established, to the current conversion station The simulation lightning current is injected at the interior wherein edge tip of a building or electrical equipment, and the simulation thunder and lightning is electric The data input of stream is into the simulation model of corresponding building or electrical equipment in current conversion station.Further, in current conversion station Building, such as：The valve Room 20 and control building 21, typically square building, therefore to it by the way of the Injection Current of corner Injection simulation lightning current；Electrical equipment in current conversion station, such as：Converter power transformer 24 and alternating-current switch field 22, it is typically all Cylinder or vertebral body structure shape, therefore simulate thunder and lightning to its injection by the way of edge or tip place Injection Current Electric current.The mode of Injection Current at above-mentioned edge tip, it is to simulate extreme feelings when thunderbolt building or electrical equipment Condition, because in thunderbolt when the tip or edge of the corner of building or electrical equipment, caused harm is maximum.
With reference to the method described in the step of S204, S205, S206 and S207：S204 in the current conversion station wherein one In the simulation model of building or electrical equipment, simulation lightning current analysis program is established, ground potential rises calculation procedure and waits Impulse resistance calculation procedure is imitated, is simulated described in S205 and lightning current data, S206 is simulated described in lightning current parser analysis The ground potential rises the ground that calculation procedure calculates the building or electrical equipment corresponding to the simulation lightning current data Potential rise, equivalent impulse resistance calculation procedure described in S207 calculate the building corresponding to the simulation lightning current data Or the equivalent impulse resistance data of electrical equipment
Specifically, after the wherein simulation model of a building or electrical equipment in current conversion station is established, described imitative Simulation lightning current analysis program is established in true mode, ground potential rises calculation procedure and equivalent impulse resistance calculation procedure；Mould Intend lightning current parser analysis simulation lightning current data, then, ground potential rises calculation procedure calculating simulation lightning current The ground potential liter of the building or electrical equipment corresponding to data, afterwards, equivalent impulse resistance calculation procedure calculating simulation The equivalent impulse resistance data of the building or electrical equipment corresponding to lightning current data.Further, thunder and lightning is simulated Amperometry program to analyze the simulation lightning current data of a wherein building into current conversion station or electrical equipment injection, This simulation lightning current data can be that the data collection program established inside simulation model obtains or artificial defeated automatically Enter into simulation lightning current analysis program, do not limit herein；In the simulation complete simulation of lightning current parser analysis After lightning current data, the simulation lightning current data transfer after analysis to ground potential is risen in calculation procedure, by ground potential Rise the change of current of the calculation procedure according to corresponding to the simulation lightning current data that transmission is come in calculate the simulation lightning current data The ground potential liter of a wherein building or electrical equipment in standing；Calculation procedure is risen by being calculated in current conversion station in ground potential The wherein ground potential of a building or electrical equipment rise numerical value after, by the data transfer of this place potential rise to equivalent impact In resistance calculations program, the numerical value for the ground potential liter come in by equivalent impulse resistance calculation procedure according to transmission, this place electricity is calculated The numerical value of the equivalent impulse resistance of the building or electrical equipment corresponding to the numerical value that position rises, or, do not rushed by these effects The numerical value that resistance calculations program calculates the equivalent impulse resistance of the building or electrical equipment is hit, calculation procedure is risen in ground potential After the numerical value risen by the wherein ground potential of a building or electrical equipment being calculated in current conversion station, according to obtained ground The numerical value of potential rise and above-mentioned be calculated simulate lightning current data, directly calculate the equivalent impact of building or electrical equipment The numerical value of resistance.
Specifically, the equivalent impulse resistance calculation procedure base area potential rise calculation procedure in above-mentioned simulation model calculates Obtained ground potential is appreciated, and when calculating the equivalent impulse resistance value of corresponding building or electrical equipment in the current conversion station, is pressed Calculated according to following formula：
R=U/I
In above formula, R is the equivalent impulse resistance value, and U appreciates for the ground potential, and I is the simulation lightning current value.
Further, in the equivalent impact that a wherein building or electrical equipment in current conversion station are calculated by simulation model During resistance value, a kind of embodiment is：Lightning current numerical value is simulated by simulation lightning current parser analysis, then, ground electricity Position rises the ground potential liter number that calculation procedure calculates the building or electrical equipment corresponding to the simulation lightning current numerical value Value, afterwards, equivalent impulse resistance calculation procedure, according to R=U/I, numerical value, calculating simulation lightning current data are risen by ground potential The equivalent impulse resistance numerical value of the corresponding building or electrical equipment；In alternatively possible embodiment, upper State and rise calculation procedure by simulating lightning current analysis program and ground potential, obtain simulation lightning current numerical value and ground potential rises number After value, the numerical value of the equivalent impulse resistance is no longer calculated by equivalent impulse resistance calculation procedure, by manually directly passing through The simulation lightning current numerical value and ground potential of acquisition rise numerical value, according to R=U/I, calculate described simulation lightning current data institute The equivalent impulse resistance numerical value of the corresponding building or electrical equipment.A wherein building in previously determined current conversion station Or after the lightning protection grade of the lightning protection device of electrical equipment, the equivalent impact electricity of corresponding building or electrical equipment in current conversion station Threshold value also determines therewith as defined in the specification of resistance, according to the equivalent punching of corresponding building or electrical equipment in obtained current conversion station Resistance value is hit, compares whether this equivalent impulse resistance numerical value exceedes threshold value as defined in the specification of equivalent impulse resistance, so as to Enough judge the lightning protection properties of the lightning protection device of corresponding building or electrical equipment in current conversion station.This area and technical staff can be with Understand, the equivalent impulse resistance of a wherein building or electrical equipment in above-mentioned current conversion station, equivalent in current conversion station Corresponding building or electrical equipment Ground shock waves grounding resistance, because this equivalent impulse resistance is by analysis mode thunder thunder The numerical value that electric current obtains, and simulate the thunder and lightning that lightning current is simulation and hit in current conversion station wherein a building or electronic equipment Situation, simulation lightning current is the equivalent current of lightning current, therefore the equivalent impulse resistance is and impulse grounding electricity Hinder equivalent resistance；In addition, specification is defined as described in this method, related specifications are set to the building or electronics of different lightning protection grades The regulation of standby ground connection impulse resistance, it is to be understood that equivalent impulse resistance need to only meet that related specifications regulation can be assert Its lightning protection device meets related specifications regulation.
Using the above method, by establishing the model of converter station valve hall, simulation lightning current is injected to converter station valve hall, is led to The equivalent impulse resistance for calculating and obtaining converter station valve hall is crossed, can accurately check the lightning protection properties of converter station valve hall.
S208 judges described etc. according to a wherein building or the equivalent impulse resistance of electrical equipment in the current conversion station Whether effect impulse resistance exceedes threshold value as defined in the specification, determines corresponding building or electrical equipment in the current conversion station The lightning protection properties of lightning protection device.Specifically, according to the equivalent impact of the wherein building in current conversion station or electrical equipment electricity Resistance, determine the lightning protection properties of the lightning protection device of corresponding building or electrical equipment in the current conversion station.Further, in head After the lightning protection grade that the wherein building or electrical equipment in current conversion station is first determined, the wherein building in current conversion station Or the specification that electrical equipment is applicable also determines therewith, then determine the equivalent of a wherein building in current conversion station or electrical equipment After impulse resistance value, above-mentioned building or electrical equipment impulse earthed resistance threshold range are wanted according to as defined in specification Ask, judge whether the equivalent impulse resistance of corresponding building or electrical equipment in the current conversion station exceedes as defined in the specification Threshold value；If exceeding threshold value as defined in the specification, the lightning protection of corresponding building or electrical equipment in the current conversion station is adjusted Device, and the equivalent impulse resistance of corresponding building or electrical equipment in the current conversion station is recalculated, until described equivalent Impulse resistance is less than threshold value as defined in the specification；If not less than threshold value as defined in the specification, the change of current need not be adjusted The lightning protection device of corresponding building or electrical equipment in standing.It will be appreciated by persons skilled in the art that its in current conversion station In the equivalent impulse resistance of a building or electrical equipment need to only meet that the change of current can be being assert as defined in specification in threshold range The lightning protection properties of the lightning protection device of corresponding building or electrical equipment are good in standing, and meet specification and its lightning protection device is wanted Ask.
Using the above method, after simulation lightning current attacks a wherein building or electrical equipment in current conversion station directly, pass through Analysis and calculation procedure in the model of foundation, analyze and calculate corresponding in the current conversion station corresponding to the simulation lightning current The equivalent impulse resistance of building or electrical equipment, afterwards, judge whether this equivalent impulse resistance value meets threshold as defined in specification It is worth scope, so as to accurately verify the lightning protection properties of the wherein lightning protection device of a building or electrical equipment in current conversion station, Meanwhile for check current conversion station to lightning protection properties technical support is provided.
As shown in fig.4, the equivalent impact electricity of judgement for Converter Station Lightning Protection performance simulation computational methods of the embodiment of the present invention Hinder schematic flow sheet.S301 determines the equivalent impulse resistance of a certain building or electrical equipment in current conversion station, and S302 judges institute Whether the equivalent impulse resistance for stating corresponding building or electrical equipment in current conversion station exceedes threshold value, S303 as defined in the specification Lightning protection device meets regulation, without adjustment, the lightning protection device of a certain building or electrical equipment in S304 adjustment current conversion stations.
S301 determines the equivalent impulse resistance of a certain building or electrical equipment in current conversion station.Specifically, reference The step of S201-S207, determines the equivalent impulse resistance of corresponding building or electrical equipment in above-mentioned current conversion station, herein no longer Repeat.
It is described that S302 judges whether the equivalent impulse resistance of corresponding building or electrical equipment in the current conversion station exceedes Threshold value as defined in specification.Specifically, before S301 steps, it is first determined a certain building or electrical equipment in current conversion station Lightning protection grade, it is corresponding in current conversion station after the lightning protection grade of corresponding building or electrical equipment determines in current conversion station The specification that building or electrical equipment are applicable also determines therewith, according to the threshold range of impulse earthed resistance as defined in specification, Judge the lightning protection properties of corresponding building or lightningproof device in current conversion station；Then after S301 steps, the change of current The equivalent impulse resistance value of corresponding building or electrical equipment is calculated by simulation model analysis in standing, and finally judges to change Whether the equivalent impulse resistance value of corresponding building or electrical equipment exceedes threshold range as defined in specification in stream station, if not surpassing Threshold value as defined in the specification is crossed, then assert that the lightning protection properties of corresponding building or electrical equipment in current conversion station are good, without Adjust its lightning protection device；If exceeding threshold value as defined in the specification, S304 steps are performed.
S303 lightning protection devices meet regulation, without adjustment.Specifically, a certain building in current conversion station or electrically set Standby equivalent impulse resistance value not less than as defined in specification during threshold range, then it can be assumed that in current conversion station corresponding building or The lightning protection device of electrical equipment meets the requirement of specification fixation, and the lightning protection properties of lightning protection device are good, without adjusting.
The lightning protection device of a certain building or electrical equipment in S304 adjustment current conversion stations.Specifically, in current conversion station The equivalent impulse resistance value of a certain building or electrical equipment exceed as defined in specification during threshold value, then adjust in the current conversion station The lightning protection device of corresponding building or electrical equipment, and recalculate corresponding building or electrical equipment in the current conversion station Equivalent impulse resistance, until the equivalent impulse resistance is less than threshold value as defined in the specification.
Specifically, in S304 steps, the lightning protection device tool of a certain building or electrical equipment in current conversion station is adjusted Body is：By material used in lightning protection device, the more preferable material of electric conductivity performance is replaced by, it is stronger using copper or electric conductivity Material；Change lightning protection device layout, by adjusting the arrangement mode of main grounding grid, by mode arranged in parallel, be adjusted to The mode of right-angled intersection arranges, or the quantity of increase ground wire.By the above-mentioned means, to reduce corresponding building in stream station Or the equivalent impulse resistance of electrical equipment, improve the lightning protection of corresponding building or lightningproof device in the current conversion station Performance.Further, after lightning protection device is adjusted, the equivalent punching of corresponding building or electrical equipment in stream station is recalculated Resistance value is hit, i.e., performs S201-S207 steps again, calculates above-mentioned equivalent impulse resistance value；Gained etc. is recalculated in acquisition Effect impulse resistance value and then it is secondary judge whether this equivalent impulse resistance value meets threshold range as defined in specification, if meeting S303 steps are performed, perform S304 steps again if not meeting also, then perform S201-S207 steps, are recalculated above-mentioned etc. Impulse resistance value is imitated, untill this equivalent impulse resistance value meets threshold range as defined in specification.Further, using copper or Each connection of the lightning protection device of corresponding building or electrical equipment in the strong material of electric conductivity, or the increase current conversion station The mode of the contact surface area at place, reduce each junction of lightning protection device of corresponding building or electrical equipment in the current conversion station Contact resistance, reduce equivalent punching of the contact resistance to the lightning protection device of corresponding building or electrical equipment in current conversion station Hit the influence of resistance.By above-mentioned determination methods, a wherein building in current conversion station or electrical equipment have accurately been verified The lightning protection properties of lightning protection device.
Specifically, when establishing the simulation model calculating equivalent impulse resistance, current conversion station building or electrical equipment What is considered is ideal connection, and among the work progress of reality, the junction of lightning protection device is bad in the presence of connecting, so as to Impulse resistance is influenceed, in order to not influence the result of calculation of the equivalent impulse resistance, more important is the resistance for avoiding junction The barrier propterty of lightning protection device is had influence on, among the work progress of reality, the contact resistance of junction, example should be reduced as far as possible Such as：Polishing contact surface, expand contact surface, enlarged contact partial pressure, smear conductive paste, being connected using modes such as copper Transition wire clips Connect, to reach the purpose for reducing contact resistance.
Specifically, the lightning protection device of the building of current conversion station is divided into outside lightning protection device and internal lighting protection device, and Electrical equipment or electronic system in current conversion station etc. are designed with lightning protection device, to avoid by lightning damage.Lightning protection device is set There is earthing or grounding means, thunder and lightning is oriented into the earth.Specifically, outside lightning protection device and internal lighting protection device, and electrical equipment With the shared same earthing or grounding means such as electronic system.Also, the earthing or grounding means of outside lightning protection device mutually senses with lightning protection electric installation, and And the ad hoc earthing or grounding means of outside lightning protection device circularizes grounding body around building laying.
It will be appreciated by persons skilled in the art that lightning protection device is to prevent the harm being struck by lightning to current conversion station, and prevent The specific set-up mode of thunder device need to only meet preferably prevent thunderbolt, also, the presence of lightning protection device junction connects Touch it is bad, the problem of so as to influence lightning protection device performance, so, contact should be reduced as far as possible when the lightning protection device of reality is set Resistance, to improve the lightning protection properties of lightning protection device.
Using the above method, by changing the set-up mode of lightning protection device, reduce contact resistance so that the cloth of lightning protection device Office is more reasonable, and effectively raises the lightning protection properties of lightning protection device, while uses above-mentioned determination methods, in the equivalent impact When resistance does not meet threshold value as defined in specification, lightning protection device is adjusted, and recalculate the equivalent impulse resistance.Recalculating During equivalent impulse resistance, it need to only simulate in the side that the input of lightning current has had built up in model, you can obtain new equivalent Impulse resistance data.Using this method, the lightning protection properties of lightning protection device in current conversion station can not only be accurately verified, while greatly The time needed for data is recalculated in saving.
As shown in fig.5, the valve Room model schematic for Converter Station Lightning Protection performance simulation computational methods of the embodiment of the present invention. Figure includes：Main ground wire mesh 10, simulation lightning strike spot 11, simulation lightning strike spot 12, simulation lightning strike spot 13 and simulation lightning strike spot 14.
Below by taking the building valve Room in current conversion station as an example, illustrate a kind of Converter Station Lightning Protection performance of the present invention and imitate True computational methods.
According to this method, it is first determined the lightning protection grade of converter station valve hall.Specifically, first obtain the estimated thunderbolt time of valve Room year Number, use：
N=k × Ng×Ae
Wherein, k is correction coefficient, NgFor annual density (secondary/km of valve Room their location thunderbolt the earth2/ a), AeFor with Equivalent area (the km of the identical number of lightning strokes of valve Room intercept2)。
The lightning protection grade that determination converter station valve hall is calculated by above formula is two level, then continues following step.Specific meter Calculation process does not repeat again.
Then, the simulation model in the valve Room is established in CDEGS programs, and (CDEGS softwares are after ten by Canadian SES companies What remaining year exploitation formed, CDEGS is CURRENT DISTRIBUTION Current Distribution, electromagnetic field Electromagnetic Fields, ground connection Grounding and soil texture analysis Soil Structure Analysis English initials abbreviation, with Lower abbreviation CDEGS).Specifically, by the position data at the length, width and height in the valve Room and the valve Room in current conversion station, and by lightning protection The data message of the main grounding grid of device, together input into CDEGS programs, establish the simulation model in the valve Room.
In CDEGS programs, simulation lightning current analysis program is established, ground potential rises calculation procedure and equivalent impact Resistance calculations program.
Next corner injection method is used, enters to simulate lightning current to four subscripts at the top of converter station valve hall, this simulation Lightning current attacks analog equivalent electric current when at the top of the valve Room directly for simulation thunder and lightning around lightning protection device.Lightning current number will be simulated According to being input in CDEGS programs, or by connection and transmitting device, CDEGS programs are made to obtain this simulation lightning current in real time Data.By simulating lightning current analysis program in CDEGS programs, analysis mode lightning current data, and by the electricity after analysis Stream Data Transmission to ground potential rises calculation procedure, as corresponding to ground potential liter calculation procedure calculates the simulation lightning current data Ground potential is appreciated, and this place current potential is appreciated and transmitted to equivalent impulse resistance calculation procedure, then calculates journey by equivalent impulse resistance The equivalent impulse resistance value in the valve Room corresponding to sequence calculating simulation lightning current.Wherein, lightning current data, ground potential liter are simulated Value and equivalent impulse resistance value can be calculated according to I=U/R formula, wherein：R is the equivalent impulse resistance value, and U is The ground potential is appreciated, and I is the simulation lightning current data.
Enter to simulate lightning current to four subscripts in the valve Room, respectively obtain simulation lightning strike spot 11, simulation lightning strike spot 12, simulation Lightning strike spot 13 and simulation lightning strike spot 14, and inject different size of electric current：10kA, 20kA and 30kA.Calculated in CDEGS programs Obtain the ground potential liter corresponding to each lightning strike spot.
Table 1
Table 1 rises schematic diagram for the ground potential in the valve Room of Converter Station Lightning Protection performance simulation computational methods of the embodiment of the present invention.
It can be obtained according to the result of calculation of table 1, when thunder and lightning combines the thunder directly hit in roof around the needlework of lightning arrester When electric current is 10kA, then valve Room ground potential is risen not over 15.24kV, and equivalent impulse resistance is calculated as 1.5 with R=U/I Ω or so, meet GB/T 50065-2011《The grounding design specification of alternating-current electric device》Middle current conversion station building is electrically set Standby impulse earthed resistance is no more than 4 Ω requirement.
Above-mentioned stream station valve Room lightning protection properties emulated computation method, establishes converter station valve hall simulation model in CDEGS programs, By computational methods of the present invention, after valve Room simulation model is established, determine that converter station valve hall is equivalent when meeting with thunderbolt Impulse earthed resistance, for the lightning protection reliability of analysis converter station valve hall building or electrical equipment, the lightning-arrest needlework of lightning protection device Whether combination meets that lightning protection requirement provides technical support.
Illustrated at this and establish the simulation model in the valve Room, not to all buildings and electrical equipment in current conversion station One by one for example, those skilled in the art are enough the technical side for understanding the present invention by this example combination the method for the invention Case.
It is to determine GB/ it will be appreciated by persons skilled in the art that determining the lightning protection grade of converter station valve hall first T 50065-2011《The grounding design specification of alternating-current electric device》In, building or electrical equipment impact to converter station valve hall The requirement threshold value of grounding resistance, and the equivalent impulse resistance described in the above method and GB/T 50065-2011《Alternating-current electric The grounding design specification of device》The ground connection impulse resistance of middle defined is identical.
Using the above method, converter station valve hall simulation model is established in CDEGS programs, passes through calculating side of the present invention Method determines that converter station valve hall meets with impulse earthed resistance when being struck by lightning, for analysis converter station valve hall building or electrical equipment Whether lightning protection reliability, the lightning-arrest needlework combination of lightning protection device meet that lightning protection requirement provides technical support.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to comprising including these changes and modification.

Claims (14)

  1. A kind of 1. Converter Station Lightning Protection performance simulation computational methods, it is characterised in that
    The wherein simulation model of a building or electrical equipment established in the current conversion station；
    Corresponding building or electrical equipment injection simulation lightning current into the current conversion station, and by the simulation lightning current Input to the simulation model of corresponding building or electrical equipment in the current conversion station；
    The simulation model calculates corresponding building or electrical equipment in the current conversion station according to the simulation lightning current Equivalent impulse resistance；
    The lightning protection of corresponding building or lightningproof device in the current conversion station is determined according to the equivalent impulse resistance Performance.
  2. 2. Converter Station Lightning Protection performance simulation computational methods according to claim 1, it is characterised in that gather the current conversion station An interior wherein building or the length and position data of electrical equipment, according to the length and position data Establish the simulation model of corresponding building or electrical equipment in the current conversion station.
  3. 3. Converter Station Lightning Protection performance simulation computational methods according to claim 1, it is characterised in that the simulation thunder and lightning electricity Flow after bypassing the wherein lightning protection device of a building or electrical equipment in the current conversion station for simulation thunder and lightning, attack directly and changed described The lightning current that stream is stood on corresponding building or electrical equipment.
  4. 4. Converter Station Lightning Protection performance simulation computational methods according to claim 2, it is characterised in that in the current conversion station The wherein simulation model of a building or electrical equipment in, establish simulation lightning current analysis program, ground potential rises and calculates journey Sequence and equivalent impulse resistance calculation procedure；
    Lightning current data are simulated described in the simulation lightning current parser analysis, then, the ground potential, which rises, calculates journey Sequence calculates the ground potential liter of the building or electrical equipment corresponding to the simulation lightning current data, afterwards, described etc. Imitate the equivalent of the building or electrical equipment corresponding to the impulse resistance calculation procedure calculating simulation lightning current data Impulse resistance data.
  5. 5. Converter Station Lightning Protection performance simulation computational methods according to claim 1 or 2, it is characterised in that described in foundation Before the wherein simulation model of a building or electrical equipment in current conversion station, it is first determined built accordingly in the current conversion station The lightning protection grade of thing or electrical equipment.
  6. 6. Converter Station Lightning Protection performance simulation computational methods according to claim 5, it is characterised in that according to the current conversion station The interior wherein year of a building or electrical equipment is expected number of lightning strokes, determines corresponding building or electric in the current conversion station The lightning protection grade of equipment；
    The year, estimated number of lightning strokes was calculated as follows：N=k × Ng×Ae,
    Wherein, N be the building or electrical equipment year estimated number of lightning strokes, k is correction coefficient, NgFor the building or electricity The annual density of gas equipment their location thunderbolt the earth, AeFor the building or the identical number of lightning strokes of electrical equipment intercept Equivalent area.
  7. 7. Converter Station Lightning Protection performance simulation computational methods according to claim 1, it is characterised in that into the current conversion station The wherein edge tip of a building or electrical equipment at the injection simulation lightning current, and by the simulation lightning current Data input into the simulation model of corresponding building or electrical equipment in the current conversion station.
  8. 8. Converter Station Lightning Protection performance simulation computational methods according to claim 7, it is characterised in that in the current conversion station The wherein data for the simulation lightning current that the analysis of the simulation model of a building or electrical equipment collects, by described imitative Ground potential in true mode rises calculation procedure, calculates the ground potential liter of corresponding building or electrical equipment in the current conversion station Value.
  9. 9. Converter Station Lightning Protection performance simulation computational methods according to claim 8, it is characterised in that in the simulation model Equivalent impulse resistance calculation procedure appreciated according to the ground potential, calculate corresponding building in the current conversion station or electrically set Standby equivalent impulse resistance value, or,
    Appreciated according to the wherein ground potential of a building or electrical equipment in the simulation lightning current value and the current conversion station, The equivalent impulse resistance value of corresponding building or electrical equipment in the current conversion station is directly calculated according to R=U/I formula, it is described In R=U/I formula：R is the equivalent impulse resistance value, and U appreciates for the ground potential, and I is the simulation lightning current value.
  10. 10. Converter Station Lightning Protection performance simulation computational methods according to claim 1, it is characterised in that according to the change of current The equivalent impulse resistance of a wherein building or electrical equipment in standing, determine corresponding building or electric in the current conversion station The lightning protection properties of the lightning protection device of equipment；
    According to the requirement as defined in specification to the building or electrical equipment impulse earthed resistance threshold value, the current conversion station is judged Whether the equivalent impulse resistance of interior corresponding building or electrical equipment exceedes threshold value as defined in the specification；
    If exceeding threshold value as defined in the specification, the lightning protection dress of corresponding building or electrical equipment in the current conversion station is adjusted Put, and recalculate the equivalent impulse resistance of corresponding building or electrical equipment in the current conversion station, until the equivalent punching Hit resistance and be less than threshold value as defined in the specification；
    If not less than threshold value as defined in the specification, corresponding building or electrical equipment in the current conversion station need not be adjusted Lightning protection device.
  11. 11. Converter Station Lightning Protection performance simulation computational methods according to claim 10, it is characterised in that by changing material Material, the mode for changing layout, to reduce described in the wherein lightning protection device of a building or electrical equipment in the current conversion station Equivalent impulse resistance, improve the lightning protection properties of corresponding building or lightningproof device in the current conversion station.
  12. 12. Converter Station Lightning Protection performance simulation computational methods according to claim 10, it is characterised in that using copper or conduction Each junction of the lightning protection device of corresponding building or electrical equipment in the strong material of performance, or the increase current conversion station The mode of contact surface area, reduce connecing for each junction of lightning protection device of corresponding building or electrical equipment in the current conversion station Get an electric shock and hinder, reduce equivalent impact electricity of the contact resistance to the lightning protection device of corresponding building or electrical equipment in current conversion station The influence of resistance.
  13. 13. Converter Station Lightning Protection performance simulation computational methods according to claim 10, it is characterised in that in the current conversion station Outside lightning protection device, internal lighting protection device, electrical equipment and the electronic system of a wherein building share same earthing or grounding means.
  14. 14. Converter Station Lightning Protection performance simulation computational methods according to claim 13, it is characterised in that the outside lightning protection The earth lead of device mutually senses with lightning protection electric installation, and the earth lead of the outside lightning protection device is around building laying cyclization Shape grounding body.
CN201710740578.4A 2017-08-24 2017-08-24 A kind of Converter Station Lightning Protection performance simulation computational methods Pending CN107563035A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710740578.4A CN107563035A (en) 2017-08-24 2017-08-24 A kind of Converter Station Lightning Protection performance simulation computational methods

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710740578.4A CN107563035A (en) 2017-08-24 2017-08-24 A kind of Converter Station Lightning Protection performance simulation computational methods

Publications (1)

Publication Number Publication Date
CN107563035A true CN107563035A (en) 2018-01-09

Family

ID=60975835

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710740578.4A Pending CN107563035A (en) 2017-08-24 2017-08-24 A kind of Converter Station Lightning Protection performance simulation computational methods

Country Status (1)

Country Link
CN (1) CN107563035A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103324788A (en) * 2013-06-03 2013-09-25 华南理工大学 Lightning stroke characteristic assessment method
WO2014173314A1 (en) * 2013-04-27 2014-10-30 国网四川省电力公司电力科学研究院 System for testing property of thunder and lightning traveling wave of power transmission line
CN104298833A (en) * 2014-10-30 2015-01-21 国网电力科学研究院武汉南瑞有限责任公司 Method for generating lightning stroke simulation model of combined type composite tower
CN106709155A (en) * 2016-11-30 2017-05-24 国家电网公司华东分部 Simulation calculation method for electrical power system arrester

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014173314A1 (en) * 2013-04-27 2014-10-30 国网四川省电力公司电力科学研究院 System for testing property of thunder and lightning traveling wave of power transmission line
CN103324788A (en) * 2013-06-03 2013-09-25 华南理工大学 Lightning stroke characteristic assessment method
CN104298833A (en) * 2014-10-30 2015-01-21 国网电力科学研究院武汉南瑞有限责任公司 Method for generating lightning stroke simulation model of combined type composite tower
CN106709155A (en) * 2016-11-30 2017-05-24 国家电网公司华东分部 Simulation calculation method for electrical power system arrester

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
蒋圣超: "杆塔接地装置冲击特性的仿真与试验研究", 《万方学位论文》 *

Similar Documents

Publication Publication Date Title
CN103293419A (en) Evaluation method of grounding device impact performance
CN105160049B (en) A kind of 35kV and following distribution line direct lightning strike trip-out rate computational methods
CN105929241A (en) Grounding network design method for reducing impact grounding resistance of grounding network
Shariatinasab et al. Estimation of energy stress of surge arresters considering the high-frequency behavior of grounding systems
CN112287523A (en) Method and device for detecting overvoltage of circuit breaker under multiple lightning strokes
Shariatinasab et al. Transient modeling of the wind farms in order to analysis the lightning related overvoltages
CN112257238A (en) Method and device for evaluating insulation damage risk of circuit breaker under multiple thunder
CN104810632A (en) Method and device for determining grounding device of transmission line tower
Basholli et al. Protection of buildings on a university campus from lightning strikes
CN103647270B (en) The method to set up of ± 800kV UHVDC Transmission Lines ground connection and system
CN109241664A (en) A kind of analysis calculation method about wind-driven generator thunder and lightning electro-magnetic transient characteristic
CN105321027A (en) Lightning protection method and apparatus for power transmission line
CN105186147B (en) A kind of lump type earthing or grounding means, power station earthed system and construction method
CN107563035A (en) A kind of Converter Station Lightning Protection performance simulation computational methods
Li et al. Ground potential distribution and human-body touch voltage in old residential communities
CN104483578B (en) It is a kind of to assess the method that D.C. magnetic biasing influences on power system grounded screen
Zhou et al. Research on Optimal Configuration of Line Lightning Arrester Considering Terrain and Flashover Cost
CN102957115B (en) 500kV electric transmission line lightning arrester arranges method
CN110222430A (en) A kind of 10kV distribution line lightening arresting method
CN104682305A (en) Method for differentiated lightning protection of urban 10 kV distribution line
CN109726523A (en) A kind of selection method and device of arrester installation site
Naranjo-Villamil et al. On the calculation of electrical surges in underground cables due to a direct lightning strike
CN204045751U (en) The vertical dark earthing device in power distribution station
CN103811882B (en) A kind of method to set up of overhead distribution reinforced concrete pole protective grounding
Siregar et al. Lightning Arrester Design as a Security System for Photovoltaic Systems in Pematang Johar Village

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
RJ01 Rejection of invention patent application after publication

Application publication date: 20180109