CN106872861A - Super UHV Transmission Engineering circuit attacks the lightning current inversion method and system of wire directly - Google Patents
Super UHV Transmission Engineering circuit attacks the lightning current inversion method and system of wire directly Download PDFInfo
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- CN106872861A CN106872861A CN201611245016.4A CN201611245016A CN106872861A CN 106872861 A CN106872861 A CN 106872861A CN 201611245016 A CN201611245016 A CN 201611245016A CN 106872861 A CN106872861 A CN 106872861A
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- 238000000034 method Methods 0.000 title claims abstract description 49
- 230000005540 biological transmission Effects 0.000 title claims abstract description 30
- 238000004088 simulation Methods 0.000 claims abstract description 130
- 238000012544 monitoring process Methods 0.000 claims description 30
- 238000004364 calculation method Methods 0.000 claims description 5
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- 238000009413 insulation Methods 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/188—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for motors; for generators; for power supplies; for power distribution
Abstract
Present invention design realizes the lightning current inversion method and system that a kind of super UHV Transmission Engineering circuit attacks wire directly, by setting up simulation model, the practical operation situation of super UHV Transmission Engineering circuit is simulated completely, and after wave impedance parameter, the method for operation, the thunderbolt position in fixed simulation model, wave head time and the amplitude of actual lightning current are drawn by the emulation lightning current under simulation model by the inversion method being related in the present invention.Meanwhile, whether there is trip condition according to after being struck by lightning in actual track, different size of emulation lightning current is applied on simulation model, save the time of judgement.The easily operated realization of inversion method designed in the present invention, operand is low, and in view of each side information such as the method for operation of transformer station, device parameter, thunderbolt position, the wave head time of lightning current and amplitude under super UHV Transmission Engineering circuit, lightning current parameter under actual track can be accurately delimited, be follow-up work day work facility.
Description
Technical field
It is the invention belongs to power grid security in power system and security application field and super special more particularly, to one kind
High voltage power transmission engineering circuit attacks the lightning current inversion method and system of wire directly.
Background technology
The super UHV Transmission Engineering overhead transmission line lightning stroke trip of China is the main of influence power system safety and stability operation
Reason.Because super UHV transmission line shaft tower is higher, the probability being struck by lightning is also higher, and its thunderbolt characteristic is always research heat
The key of point and solution lightning protection.Accordingly, China Electric Power Research Institute has researched and developed " super extra-high voltage GIS/HGIS transmissions of electricity
Engineering overhead transmission line Fault Identification alignment system ".The system is by installed in overhead transmission line two ends " GIS/HGIS transformer stations/switch
Stand over-voltage monitoring apparatus system " and " overhead line structures lightning monitoring apparatus system " composition on overhead transmission line shaft tower,
Overhead transmission line thunderbolt current monitoring and lightning fault identification function can be realized based on the system.
At present, well-known scientific research institution uses international advanced graphical EM transient calculation program both at home and abroad
ATP-EMTP carries out calculating research thunder intrusion.But it is the waveform and width that have selected lightning wave in research process
Value, the position of lightning strike spot, calculate the maximum Overvoltage Amplitude in each equipment of transformer station, then determine therefrom that the insulation of each equipment
Level and nargin.It can be seen that, its research purpose is the Insulation Coordination for substation equipment.And the mesh that the present invention is realized is according to change
The anti-position for pushing away lightning strike spot of lightning surge waveform, the amplitude of thunder and lightning and wave head time that power station is surveyed.This problem is solved, when
Preceding not ripe method.
According to transformer station's thunder intrusion simulation calculation research experience, the method for operation and design impedance of transformer station
Parameter, line length and impedance parameter, the position of lightning strike spot, amplitude and wave head time etc. influence the thunder and lightning into transformer station to invade
Enter waveform, and there are many factors to bring nonlinear influence.How the influence of above-mentioned factor is considered, according to " GIS/HGIS
The anti-position for pushing away lightning strike spot of lightning surge waveform, the width of thunder and lightning of transformer station/switchyard over-voltage monitoring apparatus system " actual measurement
Value and wave head time, that is, propose that the super extra-high voltage GIS/HGIS power transmission engineerings circuit being easily achieved attacks wire lightning current inverting side directly
Method, is the purpose of the present invention.
The content of the invention
In order to solve the above problems, according to an aspect of the present invention, there is provided a kind of super UHV Transmission Engineering circuit is attacked directly
The lightning current inversion method of wire, including,
Step 1, wave impedance simulation model is set up for actual track；
Step 2, waveform and frequency monitoring are carried out to the actual track, judge to whether there is by thunder in the actual track
The wire that electricity is attacked directly；
Step 3, when there is the wire attacked directly by thunder and lightning in the actual track, determines to be attacked directly by thunder and lightning in actual track
Wire lightning strike spot position, and obtain the lightning current over-voltage waveform in actual track；
Step 4, selectes the wave head time of emulation lightning current, and the wave head Time Calculation according to the emulation lightning current emulates mould
Lightning current over-voltage waveform in type, the lightning current over-voltage waveform wherein in actual track flows through with the thunder and lightning in simulation model
Voltage waveform is directly proportional, therefore lightning current over-voltage waveform in the simulation model calculates the lightning current in actual track
The wave head time；
Step 5, when there is the wire attacked directly by thunder and lightning in actual track, determines whether actual track tripping operation occurs；
Step 6, if tripping operation, the position corresponding with the lightning strike spot of actual track in simulation model does not occur in actual track
Put applying first and emulate thunder and lightning flow valuve, lightning current Overvoltage Amplitude in phantom, and thunder and lightning in simulation model is flowed through
Voltage magnitude is contrasted with lightning current Overvoltage Amplitude in actual track；
Step 7, by the difference of lightning current Overvoltage Amplitude in lightning current Overvoltage Amplitude in simulation model and actual track
Contrasted, the described first emulation thunder and lightning flow valuve is adjusted according to comparing result, every time one adjustment current value of adjustment, and
Using the current value after adjustment as the first emulation thunder and lightning flow valuve, step 6 is performed；When the product of continuous two differences is negative,
Perform step 10；
Step 8, if tripping operation, the position corresponding with the lightning strike spot of actual track in simulation model occurs in actual track
Apply second and emulate thunder and lightning flow valuve, lightning current Overvoltage Amplitude in phantom, and thunder and lightning in simulation model is flowed through into electricity
Pressure amplitude value is contrasted with lightning current Overvoltage Amplitude in actual track；
Step 9, by the difference of lightning current Overvoltage Amplitude in lightning current Overvoltage Amplitude in simulation model and actual track
Contrasted, the described second emulation thunder and lightning flow valuve is adjusted according to comparing result, every time one adjustment current value of adjustment, and
Using the current value after adjustment as the second emulation thunder and lightning flow valuve, step 8 is performed；When the product of continuous two differences is negative,
Perform step 10；
Step 10, determines the interval of lightning current Overvoltage Amplitude in simulation model, and the wherein thunder and lightning in actual track flows through
Voltage waveform is directly proportional to the lightning current over-voltage waveform in simulation model, therefore thunder and lightning in the simulation model flows through
The interval of the amplitude of lightning current in the interval computation actual track of voltage magnitude.
Preferably, the simulation model includes all transformer station/switchyards in the super UHV Transmission Engineering circuit
With the simulation model of circuit to be monitored.
Preferably, the method for operation of the simulation model is consistent with actual track, wherein the method for operation is returned for outlet
Number and transformer station high-voltage side bus quantity.
Preferably, the emulation lightning current wave head time can be 1 μ s, 2.6 μ s and 5 μ s.
Preferably, it is described according to comparing result to described first emulation thunder and lightning flow valuve be adjusted for：
The difference of lightning current Overvoltage Amplitude is less than in lightning current Overvoltage Amplitude subtracts actual track in simulation model
When zero, then increase the first emulation thunder and lightning flow valuve；
The difference of lightning current Overvoltage Amplitude is more than in lightning current Overvoltage Amplitude subtracts actual track in simulation model
When zero, then reduce the first emulation thunder and lightning flow valuve.
Preferably, when in simulation model lightning current Overvoltage Amplitude subtract actual track in lightning current Overvoltage Amplitude difference
When value is equal to zero, then the first emulation thunder and lightning flow valuve is not adjusted, and according to the crest meter of lightning current overvoltage in simulation model
Calculate amplitude of lightning current in actual track.
Preferably, it is described according to comparing result to described second emulation thunder and lightning flow valuve be adjusted for：
The difference of lightning current Overvoltage Amplitude is less than in lightning current Overvoltage Amplitude subtracts actual track in simulation model
When zero, then increase the second emulation thunder and lightning flow valuve；
The difference of lightning current Overvoltage Amplitude is more than in lightning current Overvoltage Amplitude subtracts actual track in simulation model
When zero, then reduce the second emulation thunder and lightning flow valuve.
Preferably, when in simulation model lightning current Overvoltage Amplitude subtract actual track in lightning current Overvoltage Amplitude difference
When value is equal to zero, then the second emulation thunder and lightning flow valuve is not adjusted, and according to the crest meter of lightning current overvoltage in simulation model
Calculate amplitude of lightning current in actual track.
According to another aspect of the present invention, there is provided a kind of super UHV Transmission Engineering circuit attacks the lightning current inverting of wire directly
System, including：
Model sets up unit, for setting up wave impedance simulation model according to actual track；
Monitoring unit, for carrying out waveform and frequency monitoring to actual track, to judge whether deposited in the actual track
In the wire attacked directly by thunder and lightning；
Positioning unit, when there is the wire attacked directly by thunder and lightning in the actual track, determines in actual track by thunder and lightning
The lightning strike spot position of the wire of direct attack, and obtain the lightning current over-voltage waveform in actual track；
Wave head computing unit, selectes the wave head time of emulation lightning current, according to the wave head time meter of the emulation lightning current
The lightning current over-voltage waveform in simulation model is calculated, in the lightning current over-voltage waveform and simulation model wherein in actual track
During lightning current over-voltage waveform is directly proportional, therefore lightning current over-voltage waveform in the simulation model calculates actual track
The lightning current wave head time；
Tripping operation monitoring unit, when there is the wire attacked directly by thunder and lightning in actual track, for whether determining actual track
There is tripping operation；
Emulation lightning current applying unit, according to the judged result of tripping operation monitoring unit, will be with actual line in simulation model
The position that the lightning strike spot on road is corresponding applies emulation thunder and lightning flow valuve, and according to lightning current Overvoltage Amplitude and reality in simulation model
The emulation thunder and lightning flow valuve in simulation model is applied in circuit described in the comparing result adjustment of lightning current Overvoltage Amplitude；
Amplitude computing unit, when lightning current Overvoltage Amplitude flows through with thunder and lightning in actual track in continuous two simulation models
When the product of the difference of voltage magnitude is negative, the interval computation reality of the lightning current Overvoltage Amplitude in the simulation model
The interval of the amplitude of lightning current in the circuit of border.
Preferably, the simulation model includes all transformer station/switchyards in the super UHV Transmission Engineering circuit
With the simulation model of circuit to be monitored.
Preferably, the method for operation of the simulation model is consistent with actual track, wherein the method for operation is returned for outlet
Number and transformer station high-voltage side bus quantity.
Preferably, the emulation lightning current wave head time can be 1 μ s, 2.6 μ s and 5 μ s.
Preferably, it is described tripping operation monitoring unit judged result for actual track do not occur tripping operation, then emulation lightning current apply
Plus corresponding with the lightning strike spot of the actual track position in simulation model of unit applies first and emulates thunder and lightning flow valuve；The tripping operation
The judged result of monitoring unit be actual track occur tripping operation, then emulate lightning current applying unit in simulation model with actual line
The position that the lightning strike spot on road is corresponding applies the second emulation thunder and lightning flow valuve.
Preferably, when the emulation lightning current applying unit is adjusted to emulation lightning current, one adjustment of adjustment every time
Current value.
Preferably, it is described according to comparing result to it is described emulation thunder and lightning flow valuve be adjusted for：
The difference of lightning current Overvoltage Amplitude is less than in lightning current Overvoltage Amplitude subtracts actual track in simulation model
When zero, then increase the emulation thunder and lightning flow valuve；
The difference of lightning current Overvoltage Amplitude is more than in lightning current Overvoltage Amplitude subtracts actual track in simulation model
When zero, then reduce the emulation thunder and lightning flow valuve.
Preferably, when in simulation model lightning current Overvoltage Amplitude subtract actual track in lightning current Overvoltage Amplitude difference
When value is equal to zero, then the first emulation thunder and lightning flow valuve is not adjusted, and according to the crest meter of lightning current overvoltage in simulation model
Calculate amplitude of lightning current in actual track.
Present invention design realizes a kind of super UHV Transmission Engineering circuit and attacks the lightning current inversion method of wire directly and be
System, by setting up simulation model, simulates the practical operation situation of super UHV Transmission Engineering circuit completely, and in fixed emulation mould
After the wave impedance parameter of type, the method for operation, thunderbolt position, by the inversion method that is related in the present invention by under simulation model
Emulation lightning current draws wave head time and the amplitude of actual lightning current.Meanwhile, whether have according to after being struck by lightning in actual track
There is trip condition, different size of emulation lightning current is applied on simulation model, save the time of judgement.
The easily operated realization of inversion method designed in the present invention, operand is low, and in view of super UHV Transmission Engineering
The each side information such as the method for operation of transformer station, device parameter, thunderbolt position, the wave head time of lightning current and amplitude under circuit,
Lightning current parameter under actual track can be accurately delimited, be follow-up work day work facility.
Brief description of the drawings
By reference to the following drawings, illustrative embodiments of the invention can be more fully understood by：
Fig. 1 is the flow chart of the inversion method according to the preferred embodiment of the present invention；
Fig. 2 is the emulation lightning current method of adjustment flow chart according to the preferred embodiment of the present invention；And
Fig. 3 is the structure chart of the Inversion System according to the preferred embodiment of the present invention.
Specific embodiment
With reference now to accompanying drawing, illustrative embodiments of the invention are introduced, however, the present invention can use many different shapes
Formula is implemented, and is not limited to embodiment described herein, there is provided these embodiments are to disclose at large and fully
The present invention, and fully pass on the scope of the present invention to person of ordinary skill in the field.For showing for being illustrated in the accompanying drawings
Term in example property implementation method is not limitation of the invention.In the accompanying drawings, identical cells/elements are attached using identical
Icon is remembered.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has to person of ordinary skill in the field
It is common to understand implication.Further it will be understood that the term limited with usually used dictionary, is appreciated that and it
The linguistic context of association area has consistent implication, and is not construed as Utopian or excessively formal meaning.
Fig. 1 is the flow chart of the inversion method according to the preferred embodiment of the present invention.As shown in figure 1, the present invention initially sets up
Simulation model, simulates the practical operation situation of super UHV Transmission Engineering circuit completely, and in the wave impedance of fixed simulation model
After parameter, the method for operation, thunderbolt position, whether there is trip condition according to after being struck by lightning in actual track, in emulation mould
Apply different size of emulation lightning current in type, draw wave head time and the amplitude of actual lightning current.
In a step 101, wave impedance simulation model is set up for actual track.Wherein simulation model includes described super extra-high
The simulation model of all transformer station/switchyards and circuit to be monitored in pressure power transmission engineering circuit, all devices of simulation model
Parameter is identical with the device parameter in actual track, and the method for operation of simulation model is identical with actual track, mainly includes
The actual motion quantity for returning number and transformer of outlet.For example, the number transformer of actual motion is 5 in certain actual track
Platform, returns back out line including 7 altogether, then the method for operation of its corresponding simulation model is similarly 5 transformer station high-voltage side bus, and 7 return back out line.
In a step 102, waveform and frequency monitoring are carried out to the actual track, judges whether deposited in the actual track
In the wire attacked directly by thunder and lightning.Monitoring unit, real-time monitoring actual track are mounted at the two ends of every wire of actual track
The magnitude of voltage at wire two ends, when certain root wire in thunderbolt, the overvoltage value that an amplitude can be produced larger, when monitoring unit prison
When measuring over-voltage waveform, then it is considered that there is wire by thunderbolt in actual track.
In step 103, when there is the wire attacked directly by thunder and lightning in actual track, determine straight by thunder and lightning in actual track
The lightning strike spot position of the wire for hitting, and obtain the lightning current over-voltage waveform in actual track.The two ends of wire in actual track
Also include positioning unit, when certain point is struck by lightning in wire, overvoltage can be produced to be transmitted from lightning strike spot guiding line two ends, it is fixed
Bit location was transmitted to the time difference at wire two ends using the over-voltage waveform, and transmission speed of the overvoltage in wire, meter
Calculate the position of lightning strike spot on wire.
At step 104, the wave head time of lightning current is emulated under selected simulation model, during according to the wave head for emulating lightning current
Between lightning current over-voltage waveform in phantom, lightning current over-voltage waveform and simulation model wherein in actual track
In lightning current over-voltage waveform be directly proportional, therefore lightning current over-voltage waveform in the simulation model calculates actual line
The lightning current wave head time in road.Preferably, the emulation lightning current wave head time can be 1 μ s, 2.6 μ s and 5 μ s, carry out
During calculating, the wave head time of the actual conditions selection emulation lightning current according to actual track.It will be appreciated that actual calculating
In circuit during the lightning current wave head time, it is possible to use the principle of line-of-sight course, the wave head time of lightning current is calculated according to actual conditions.
In step 105, when there is the wire attacked directly by thunder and lightning in actual track, determine whether actual track occurs jumping
Lock.It will be appreciated that when thunder and lightning hits wire, thunder and lightning flow valuve exceedes if a certain threshold value, is likely to result in trip phenomenon,
So hitting the amplitude of lightning current of wire under actual track is calculated, different size of emulation thunder need to be applied according to the situation of jumping
Electric current, to save the judgement time.When there is not trip condition, step 106 is carried out；Otherwise perform step 10.
In step 106, position corresponding with the lightning strike spot of actual track in simulation model applies first and emulates thunder
Current value, lightning current Overvoltage Amplitude in phantom, and by lightning current Overvoltage Amplitude in simulation model and actual line
Lightning current Overvoltage Amplitude is contrasted in road, and continues executing with step 107.It will be appreciated that the first emulation thunder and lightning flow valuve
Can be 20kA, or this is adjusted according to the dielectric level of actual track and the experience of field personnel.
In step 107, by lightning current Overvoltage Amplitude in lightning current Overvoltage Amplitude in simulation model and actual track
Difference contrasted, according to comparing result to described first emulation thunder and lightning flow valuve be adjusted, every time adjustment one adjustment electricity
Flow valuve, and using the current value after adjustment as the first emulation thunder and lightning flow valuve, perform step 106.Preferably, adjustment current value is root
According to the less current value that the dielectric level and ruuning situation of actual track determine, typically 5kA or 2kA, but not
Two above current value is only limitted to, can be adjusted according to actual conditions.When the product of continuous two differences is negative, card
Between the lightning current Overvoltage Amplitude that lightning current Overvoltage Amplitude in bright actual track has fallen under simulation model twice, this
Shi Zhihang steps 110 are calculating the amplitude of lightning current under actual track.
In step 108, position corresponding with the lightning strike spot of actual track in simulation model applies second and emulates thunder
Current value, lightning current Overvoltage Amplitude in phantom, and by lightning current Overvoltage Amplitude in simulation model and actual line
Lightning current Overvoltage Amplitude is contrasted in road, and continues executing with step 109.It will be appreciated that the second emulation thunder and lightning flow valuve
Can be 30kA, or this is adjusted according to the dielectric level of actual track and the experience of field personnel.
In step 109, by lightning current Overvoltage Amplitude in lightning current Overvoltage Amplitude in simulation model and actual track
Difference contrasted, according to comparing result to described second emulation thunder and lightning flow valuve be adjusted, every time adjustment one adjustment electricity
Flow valuve, and using the current value after adjustment as the second emulation thunder and lightning flow valuve, perform step 108.When the product of continuous two differences
During for negative, it was demonstrated that the lightning current Overvoltage Amplitude in actual track has fallen the lightning current overvoltage under simulation model twice
Between amplitude, step 110 is now performed to calculate the amplitude of lightning current under actual track.
In step 110, the interval of lightning current Overvoltage Amplitude in simulation model, the wherein thunder and lightning in actual track are determined
Voltage waveform is flowed through to be directly proportional to the lightning current over-voltage waveform in simulation model, therefore the thunder and lightning in the simulation model
Flow through the interval of the amplitude of lightning current in the interval computation actual track of voltage magnitude.Lightning current Overvoltage Amplitude in simulation model
Interval two ends endpoint value difference absolute value should be adjustment current value size.
Fig. 2 is the emulation lightning current method of adjustment flow chart according to the preferred embodiment of the present invention.As shown in Fig. 2 emulation thunder
Current adjusting method 200 is since step 201.In step 201, the lightning strike spot with actual track in simulation model is corresponding
Position apply emulation thunder and lightning flow valuve.It will be appreciated that method 200 is applied to trip condition and non-trip condition, institute simultaneously
It is unified to be indicated using emulation thunder and lightning flow valuve with description.
In step 202., after judging to apply in simulation model emulation lightning current, the emulation lightning current overvoltage of generation
Whether amplitude is more than zero with the difference of lightning current Overvoltage Amplitude in actual track, when result of determination is that difference is more than zero, enters
Row step 203, otherwise performs step 205.
In step 203, whether the product for continuing to judge double difference is negative, if negative, is then directly carried out
Step 208, otherwise continues executing with step 204.When double difference is negative, then the thunder and lightning of actual track is may certify that
Flow through voltage magnitude just to fall in the interval of the emulation lightning current Overvoltage Amplitude composition for calculating twice, then can carry out follow-up
Calculate.
In step 204, due to lightning current Overvoltage Amplitude in the amplitude and actual track that emulate lightning current overvoltage
Difference is more than zero, then reduce by an adjustment current value on the basis of original emulation lightning current, and the value that will be obtained is used as new
Emulation thunder and lightning flow valuve, re-executes step 201, until the product of double difference is negative.
In step 205, after judging to apply in simulation model emulation lightning current, the emulation lightning current overvoltage of generation
Whether amplitude is less than zero with the difference of lightning current Overvoltage Amplitude in actual track, when result of determination is that difference is less than zero, enters
Row step 206, otherwise, it was demonstrated that the amplitude of emulation lightning current overvoltage is identical with lightning current Overvoltage Amplitude in actual track, directly
Connect execution step 208.
In step 206, whether the product for continuing to judge double difference is negative, if negative, is then directly carried out
Step 208, otherwise continues executing with step 207.When double difference is negative, then the thunder and lightning of actual track is may certify that
Flow through voltage magnitude just to fall in the interval of the emulation lightning current Overvoltage Amplitude composition for calculating twice, then can carry out follow-up
Calculate.
In step 207, due to lightning current Overvoltage Amplitude in the amplitude and actual track that emulate lightning current overvoltage
Difference is less than zero, then increase an adjustment current value on the basis of original emulation lightning current, and the value that will be obtained is used as new
Emulation thunder and lightning flow valuve, re-executes step 201, until the product of double difference is negative.
In a step 208, the interval for being constituted according to emulation lightning current Overvoltage Amplitude or emulation lightning current Overvoltage Amplitude,
Calculate the amplitude of lightning current in actual track.
Fig. 3 is the structure chart of the Inversion System according to the preferred embodiment of the present invention.Inversion System 300 includes：Model is set up
Unit 301, monitoring unit 302, positioning unit 303, wave head computing unit 304, tripping operation monitoring unit 305, emulation lightning current are applied
Plus unit 306 and amplitude computing unit 307.Wherein,
Model sets up unit 301 for setting up wave impedance simulation model according to actual track；
Monitoring unit 302 is used to carry out waveform and frequency monitoring to actual track, with judge in the actual track whether
In the presence of the wire attacked directly by thunder and lightning；
Positioning unit 303 is determined in actual track by thunder when there is the wire attacked directly by thunder and lightning in the actual track
The lightning strike spot position of the wire that electricity is attacked directly, and obtain the lightning current over-voltage waveform in actual track；
Wave head computing unit 304 is used for the wave head time of selected emulation lightning current, according to the wave head of the emulation lightning current
Lightning current over-voltage waveform in Time Calculation simulation model, lightning current over-voltage waveform and emulation mould wherein in actual track
Lightning current over-voltage waveform in type is directly proportional, therefore the lightning current over-voltage waveform calculating reality in the simulation model
The lightning current wave head time in circuit；
When tripping operation monitoring unit 305 has the wire attacked directly by thunder and lightning in actual track, for determining that actual track is
It is no tripping operation occur；
Emulation lightning current applying unit 306, will be with reality in simulation model according to the judged result of tripping operation monitoring unit
The position that the lightning strike spot of circuit is corresponding applies emulation thunder and lightning flow valuve, and according to lightning current Overvoltage Amplitude and reality in simulation model
The emulation thunder and lightning flow valuve in simulation model is applied in the circuit of border described in the comparing result adjustment of lightning current Overvoltage Amplitude；
Amplitude computing unit 307 is when lightning current Overvoltage Amplitude in continuous two simulation models and lightning current in actual track
When the product of the difference of Overvoltage Amplitude is negative, the interval computation of the lightning current Overvoltage Amplitude in the simulation model
The interval of the amplitude of lightning current in actual track.
Preferably, the simulation model includes all transformer station/switchyards in the super UHV Transmission Engineering circuit
With the simulation model of circuit to be monitored.
Preferably, the method for operation of the simulation model is consistent with actual track, wherein the method for operation is returned for outlet
Number and transformer station high-voltage side bus quantity.
Preferably, the emulation lightning current wave head time can be 1 μ s, 2.6 μ s and 5 μ s.
Preferably, it is described tripping operation monitoring unit judged result for actual track do not occur tripping operation, then emulation lightning current apply
Plus corresponding with the lightning strike spot of the actual track position in simulation model of unit applies first and emulates thunder and lightning flow valuve；The tripping operation
The judged result of monitoring unit be actual track occur tripping operation, then emulate lightning current applying unit in simulation model with actual line
The position that the lightning strike spot on road is corresponding applies the second emulation thunder and lightning flow valuve.
Preferably, when the emulation lightning current applying unit is adjusted to emulation lightning current, one adjustment of adjustment every time
Current value.
Preferably, it is described according to comparing result to it is described emulation thunder and lightning flow valuve be adjusted for：
The difference of lightning current Overvoltage Amplitude is less than in lightning current Overvoltage Amplitude subtracts actual track in simulation model
When zero, then increase the emulation thunder and lightning flow valuve；
The difference of lightning current Overvoltage Amplitude is more than in lightning current Overvoltage Amplitude subtracts actual track in simulation model
When zero, then reduce the emulation thunder and lightning flow valuve.
Preferably, when in simulation model lightning current Overvoltage Amplitude subtract actual track in lightning current Overvoltage Amplitude difference
When value is equal to zero, then the first emulation thunder and lightning flow valuve is not adjusted, and according to the crest meter of lightning current overvoltage in simulation model
Calculate amplitude of lightning current in actual track.
The preferred embodiments of the present invention Inversion System 300 is relative with another preferred embodiment inversion method 100 of the invention
Should, do not repeated herein.
The present invention is described by reference to a small amount of implementation method.However, it is known in those skilled in the art, as
What subsidiary Patent right requirement was limited, except the present invention other embodiments disclosed above equally fall of the invention
In the range of.
Normally, all terms for using in the claims are all solved according to them in the usual implication of technical field
Release, unless clearly defined in addition wherein.It is all of to be all opened ground with reference to " one/described/be somebody's turn to do [device, component etc.] "
At least one of described device, component etc. example is construed to, unless otherwise expressly specified.Any method disclosed herein
Step need not all be run with disclosed accurate order, unless explicitly stated otherwise.
Claims (16)
1. a kind of super UHV Transmission Engineering circuit attacks the lightning current inversion method of wire directly, including,
Step 1, wave impedance simulation model is set up for actual track；
Step 2, waveform and frequency monitoring are carried out to the actual track, are judged in the actual track with the presence or absence of straight by thunder and lightning
The wire for hitting；
Step 3, when there is the wire attacked directly by thunder and lightning in the actual track, determines leading by thunder and lightning direct attack in actual track
The lightning strike spot position of line, and obtain the lightning current over-voltage waveform in actual track；
Step 4, selectes the wave head time of emulation lightning current, in the wave head Time Calculation simulation model according to the emulation lightning current
Lightning current over-voltage waveform, the lightning current overvoltage in lightning current over-voltage waveform wherein in actual track and simulation model
Waveform is directly proportional, therefore lightning current over-voltage waveform in the simulation model calculates the lightning current wave head in actual track
Time；
Step 5, when there is the wire attacked directly by thunder and lightning in actual track, determines whether actual track tripping operation occurs；
Step 6, if tripping operation does not occur in actual track, the position corresponding with the lightning strike spot of actual track is applied in simulation model
Emulation thunder and lightning flow valuve of plus the first, lightning current Overvoltage Amplitude in phantom, and by lightning current overvoltage in simulation model
Amplitude is contrasted with lightning current Overvoltage Amplitude in actual track；
Step 7, lightning current Overvoltage Amplitude in simulation model is carried out with the difference of lightning current Overvoltage Amplitude in actual track
Contrast, is adjusted according to comparing result to the described first emulation thunder and lightning flow valuve, every time one adjustment current value of adjustment, and will adjust
Current value after whole performs step 6 as the first emulation thunder and lightning flow valuve；When the product of continuous two differences is negative, perform
Step 10；
Step 8, if tripping operation occurs in actual track, corresponding with the lightning strike spot of actual track position in simulation model applies
Second emulation thunder and lightning flow valuve, lightning current Overvoltage Amplitude in phantom, and by lightning current overvoltage width in simulation model
Value is contrasted with lightning current Overvoltage Amplitude in actual track；
Step 9, lightning current Overvoltage Amplitude in simulation model is carried out with the difference of lightning current Overvoltage Amplitude in actual track
Contrast, is adjusted according to comparing result to the described second emulation thunder and lightning flow valuve, every time one adjustment current value of adjustment, and will adjust
Current value after whole performs step 8 as the second emulation thunder and lightning flow valuve；When the product of continuous two differences is negative, perform
Step 10；
Step 10, determines the interval of lightning current Overvoltage Amplitude in simulation model, the lightning current overvoltage wherein in actual track
Waveform is directly proportional to the lightning current over-voltage waveform in simulation model, therefore the lightning current overvoltage in the simulation model
The interval of the amplitude of lightning current in the interval computation actual track of amplitude.
2. method according to claim 1, it is characterised in that the simulation model includes the super UHV Transmission Engineering
The simulation model of all transformer station/switchyards and circuit to be monitored in circuit.
3. method according to claim 2, it is characterised in that the method for operation of the simulation model and actual track one
Cause, wherein the method for operation is outlet returns number and transformer station high-voltage side bus quantity.
4. method according to claim 1, it is characterised in that the emulation lightning current wave head time can be 1 μ s, 2.6 μ
S and 5 μ s.
5. method according to claim 1, it is characterised in that it is described according to comparing result to the described first emulation lightning current
Value be adjusted for：
When in simulation model lightning current Overvoltage Amplitude subtract actual track in lightning current Overvoltage Amplitude difference be less than zero when,
Then increase the first emulation thunder and lightning flow valuve；
When in simulation model lightning current Overvoltage Amplitude subtract actual track in lightning current Overvoltage Amplitude difference be more than zero when,
Then reduce the first emulation thunder and lightning flow valuve.
6. method according to claim 5, it is characterised in that when lightning current Overvoltage Amplitude subtracts reality in simulation model
When the difference of lightning current Overvoltage Amplitude is equal to zero in circuit, then the first emulation thunder and lightning flow valuve is not adjusted, and according to emulation
The amplitude of lightning current overvoltage calculates amplitude of lightning current in actual track in model.
7. method according to claim 1, it is characterised in that it is described according to comparing result to the described second emulation lightning current
Value be adjusted for：
When in simulation model lightning current Overvoltage Amplitude subtract actual track in lightning current Overvoltage Amplitude difference be less than zero when,
Then increase the second emulation thunder and lightning flow valuve；
When in simulation model lightning current Overvoltage Amplitude subtract actual track in lightning current Overvoltage Amplitude difference be more than zero when,
Then reduce the second emulation thunder and lightning flow valuve.
8. method according to claim 7, it is characterised in that when lightning current Overvoltage Amplitude subtracts reality in simulation model
When the difference of lightning current Overvoltage Amplitude is equal to zero in circuit, then the second emulation thunder and lightning flow valuve is not adjusted, and according to emulation
The amplitude of lightning current overvoltage calculates amplitude of lightning current in actual track in model.
9. a kind of super UHV Transmission Engineering circuit attacks the lightning current Inversion System of wire directly, including：
Model sets up unit, for setting up wave impedance simulation model according to actual track；
Monitoring unit, for carrying out waveform and frequency monitoring to actual track, to judge to whether there is quilt in the actual track
The wire that thunder and lightning is attacked directly；
Positioning unit, when there is the wire attacked directly by thunder and lightning in the actual track, determines to be attacked directly by thunder and lightning in actual track
Wire lightning strike spot position, and obtain the lightning current over-voltage waveform in actual track；
Wave head computing unit, selectes the wave head time of emulation lightning current, and the wave head Time Calculation according to the emulation lightning current is imitated
Lightning current over-voltage waveform in true mode, the thunder and lightning in lightning current over-voltage waveform and simulation model wherein in actual track
Voltage waveform is flowed through to be directly proportional, therefore lightning current over-voltage waveform in the simulation model calculates the thunder in actual track
The electric current wave head time；
Tripping operation monitoring unit, when there is the wire attacked directly by thunder and lightning in actual track, for determining whether actual track occurs
Tripping operation；
Emulation lightning current applying unit, according to tripping operation monitoring unit judged result, in simulation model by with actual track
The corresponding position of lightning strike spot applies emulation thunder and lightning flow valuve, and according to lightning current Overvoltage Amplitude and actual track in simulation model
The emulation thunder and lightning flow valuve in simulation model is applied to described in the comparing result adjustment of middle lightning current Overvoltage Amplitude；
Amplitude computing unit, when lightning current Overvoltage Amplitude in continuous two simulation models and lightning current overvoltage in actual track
When the product of the difference of amplitude is negative, the actual line of interval computation of the lightning current Overvoltage Amplitude in the simulation model
The interval of the amplitude of lightning current in road.
10. system according to claim 9, it is characterised in that the simulation model includes the super UHV transmission work
The simulation model of all transformer station/switchyards and circuit to be monitored in journey circuit.
11. systems according to claim 10, it is characterised in that the method for operation of the simulation model and actual track one
Cause, wherein the method for operation is outlet returns number and transformer station high-voltage side bus quantity.
12. systems according to claim 9, it is characterised in that the emulation lightning current wave head time can be 1 μ s, 2.6
μ s and 5 μ s.
13. systems according to claim 9, it is characterised in that the judged result of the tripping operation monitoring unit is actual line
There is not tripping operation in road, then emulate corresponding with the lightning strike spot of the actual track position in simulation model of lightning current applying unit and apply
Plus the first and emulate thunder and lightning flow valuve；There is tripping operation for actual track in the judged result of the tripping operation monitoring unit, then emulate lightning current
Corresponding with the lightning strike spot of the actual track position in simulation model of applying unit applies second and emulates thunder and lightning flow valuve.
14. systems according to claim 9, it is characterised in that the emulation lightning current applying unit is to emulation lightning current
When being adjusted, adjustment one every time adjusts current value.
15. systems according to claim 9, it is characterised in that described that thunder and lightning flow valuve is emulated to described according to comparing result
Be adjusted for：
When in simulation model lightning current Overvoltage Amplitude subtract actual track in lightning current Overvoltage Amplitude difference be less than zero when,
Then increase the emulation thunder and lightning flow valuve；
When in simulation model lightning current Overvoltage Amplitude subtract actual track in lightning current Overvoltage Amplitude difference be more than zero when,
Then reduce the emulation thunder and lightning flow valuve.
16. systems according to claim 15, it is characterised in that when lightning current Overvoltage Amplitude subtracts reality in simulation model
When the difference of lightning current Overvoltage Amplitude is equal to zero in the circuit of border, then the first emulation thunder and lightning flow valuve is not adjusted, and according to imitative
The amplitude of lightning current overvoltage calculates amplitude of lightning current in actual track in true mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611245016.4A CN106872861B (en) | 2016-12-29 | 2016-12-29 | Lightning current inversion method and system for direct-hit conductor of ultra-high voltage transmission engineering line |
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| CN201611245016.4A CN106872861B (en) | 2016-12-29 | 2016-12-29 | Lightning current inversion method and system for direct-hit conductor of ultra-high voltage transmission engineering line |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107765102A (en) * | 2017-09-13 | 2018-03-06 | 广东电网有限责任公司江门供电局 | A kind of lightning parameter Inversion Calculation optimization method |
| CN108020704A (en) * | 2017-11-27 | 2018-05-11 | 清华大学 | A kind of thunder and lightning substrate current inversion method based on deconvolution |
| CN110032827A (en) * | 2019-04-30 | 2019-07-19 | 清华大学 | Current elements 3-d inversion method based on algebra elastic network(s) regularization method |
| CN113406400A (en) * | 2021-07-29 | 2021-09-17 | 广东电网有限责任公司 | Method and system for measuring voltage and current characteristics of continuous lightning stroke along line |
-
2016
- 2016-12-29 CN CN201611245016.4A patent/CN106872861B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107765102A (en) * | 2017-09-13 | 2018-03-06 | 广东电网有限责任公司江门供电局 | A kind of lightning parameter Inversion Calculation optimization method |
| CN107765102B (en) * | 2017-09-13 | 2019-11-22 | 广东电网有限责任公司江门供电局 | A kind of lightning parameter Inversion Calculation optimization method |
| CN108020704A (en) * | 2017-11-27 | 2018-05-11 | 清华大学 | A kind of thunder and lightning substrate current inversion method based on deconvolution |
| CN110032827A (en) * | 2019-04-30 | 2019-07-19 | 清华大学 | Current elements 3-d inversion method based on algebra elastic network(s) regularization method |
| CN110032827B (en) * | 2019-04-30 | 2020-12-18 | 清华大学 | Current element three-dimensional inversion method based on algebraic elastic network regularization method |
| CN113406400A (en) * | 2021-07-29 | 2021-09-17 | 广东电网有限责任公司 | Method and system for measuring voltage and current characteristics of continuous lightning stroke along line |
| CN113406400B (en) * | 2021-07-29 | 2022-07-08 | 广东电网有限责任公司 | Method and system for measuring voltage and current characteristics of continuous lightning stroke along line |
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| CN106872861B (en) | 2020-12-15 |
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