CN109165441A - The emulated computation method of parallel transmission line of alternation current induced voltage and electric current based on ATP-EMTP - Google Patents
The emulated computation method of parallel transmission line of alternation current induced voltage and electric current based on ATP-EMTP Download PDFInfo
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- CN109165441A CN109165441A CN201810959072.7A CN201810959072A CN109165441A CN 109165441 A CN109165441 A CN 109165441A CN 201810959072 A CN201810959072 A CN 201810959072A CN 109165441 A CN109165441 A CN 109165441A
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Abstract
The present invention proposes a kind of emulated computation method of parallel transmission line of alternation current inductive voltage and current based on ATP-EMTP, model is established by ATP-EMTP simulation software, according to soil resistivity parameter along acquired transmission line parameter, ground wire parameter, transmission tower parameter, transmission line of electricity, transmission line of electricity relevant parameter in ATP-EMTP software is set, circuit model is established；According to the charging operation transmission line of electricity operating parameter of acquisition, voltage source and current source are established at charging operation transmission line of electricity both ends, to calculate electrostatic induction voltage, static induced current, electromagnetic induction voltage and the em induced current of construction line.This method can induced voltage and induced current size on the parallel transmission line of alternation current construction line of accurate evaluation, carry out safety measure in time, improve Research Work of Power Transmission Line personnel safety work capacity.
Description
Technical field
The present invention relates to transmission line of electricity simulation calculation field, in particular to a kind of parallel ac transmission based on ATP-EMTP
The emulated computation method of line influence voltage and current.
Background technique
As high pressure, UHV transmission line engineering construction are more and more, occupy ground saving line corridor, reducing city
In the case where, the case where inevitably transmission line of electricity is parallel and scissors crossing.The a plurality of general transmission of electricity of route is walked
Corridor is commonplace, and due to electrostatic coupling and electromagnetic coupling complicated between transmission line of electricity, on interruption maintenance maintenance line
Quite high induced voltage and induced current can be generated, the safety of the person and equipment is seriously jeopardized.
According to studies have shown that closing on ultrahigh voltage alternating current transmission lines induced voltage can reach tens of kilovolts, induced current can
Reach tens of amperes.And parallel two transmission line of alternation currents induced electricity Study on Problems is few, therefore, how to obtain parallel two friendships
Induced voltage and faradic size are problems in the urgent need to address at present when flowing transmission line of electricity.
The purpose of the present invention is overcome the deficiencies in the prior art, proposes a kind of use ATP-EMTP software emulation two
Induced voltage, faradic calculation method when parallel alternating current circuit, it is horizontal convenient for assessment induced voltage and induced current, in time
Safety measure is carried out, Research Work of Power Transmission Line personnel safety work capacity is improved.
Summary of the invention
The present invention proposes a kind of simulation calculation of parallel transmission line of alternation current induced voltage and electric current based on ATP-EMTP
Method, comprising the following steps:
Step 1: obtaining electrical basic parameter
Including transmission line parameter, ground wire parameter, transmission tower parameter, soil resistivity parameter along transmission line of electricity, band
Electricity operation route operating parameter；
Step 2: building ATP-EMTP simulation model
According to soil resistivity along acquired transmission line parameter, ground wire parameter, transmission tower parameter, transmission line of electricity
Parameter is arranged the transmission line of electricity relevant parameter in ATP-EMTP software, establishes circuit model；According to the charging operation of acquisition
Route operating parameter establishes voltage source and current source at charging operation transmission line of electricity both ends；
Step 3: induced voltage and induced current calculate
Electrostatic induction voltage, electrostatic sense including calculating parallel transmission line of alternation current according to the simulation model of the step 2
Answer electric current, electromagnetic induction voltage and em induced current.
Further, transmission line parameter includes between transmission line of electricity model, internal diameter, outer diameter, D.C. resistance, division number, division
Away from, arc sag, phase sequence.
Further, ground wire parameter includes ground wire model, internal diameter, outer diameter, D.C. resistance, arc sag.
Further, transmission tower parameter includes shaft tower model, exhales height, span, conducting wire in shaft tower hitch point.
Further, charging operation route operating parameter includes working line voltage class, transmission power.
Further, the lumped parameter model in ATP-EMTP may be selected to short distance transmission line of electricity, to long-distance transmission line
Road need to select the distributed parameter model in ATP-EMTP.
Further, voltage source is connected to working line head end, and current source is connected to working line end.
Further, when computing electric power line electrostatic induction voltage, the transmission line of electricity of induction needs both ends to open a way；Calculate power transmission line
When the electromagnetic induction voltage of road, the transmission line of electricity of induction needs one end to be grounded, one end open circuit；When calculating static induced current, induction
Transmission line of electricity needs one end to be grounded, one end open circuit；When calculating em induced current, the transmission line of electricity both ends of induction are both needed to be grounded.
Further, the induced voltage of induction line and electric current need split-phase to detect.
Detailed description of the invention
Fig. 1 is transmission line of electricity Model model setting figure in the method for the present invention；
Fig. 2 is the positional diagram of transmission line of electricity.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.
Present invention combination CDEGS software to carry out simulation calculation to the induced current and induced voltage of transmission line of electricity.
Exchange the emulated computation method of transmission lines in parallel inductive voltage and current, comprising the following steps:
Step 1 obtains electrical basic parameter
1) transmission line parameter involved in obtaining, including transmission line of electricity model, internal diameter, outer diameter, division number, direct current
Resistance, division spacing, arc sag, phase sequence etc.；
2) ground wire parameter, including ground wire model, internal diameter, outer diameter, arc sag, D.C. resistance involved in obtaining etc.；
3) transmission tower parameter involved in obtaining, including shaft tower model, exhale height, span, conducting wire in shaft tower hitch point etc.；
4) soil resistivity parameter involved in obtaining；
5) working line operating parameter, including working line voltage class, transmission power etc. are obtained.
Step 2 builds ATP-EMTP simulation model
1) model of power transmission system designs.According to soil resistivity, electric transmission line erection mode, power transmission line along transmission line of electricity
Road phase sequence, working line and induction line and the factors such as line space determine transmission line of electricity sectional pattern.
2) model of power transmission system is built.Lumped parameter model in ATP-EMTP may be selected to short distance transmission line of electricity, it is right
Long distance transmission line need to select the distributed parameter model in ATP-EMTP, by the designed each section of transmission line of electricity of step 1),
It is simulated in ATP-EMTP with the model of power transmission system of selection, and is connected each section of transmission line of electricity according to transmission line of electricity phase sequence figure
Come.
3) transmission line parameter is arranged.The parameter that need to be arranged has in the LCC (transmission line of electricity module) in ATP-EMTP
Model, data module.The parameter and step 2 data analytical calculation that the setting of this partial parameters is collected according to step 1 obtain.
Transmission line of electricity type and corresponding feature are set specially in Model module, as shown in Figure 1, setting model of power transmission system, setting
Soil resistivity, transmission line of electricity frequency of delivery, transmission line length；Data module setting transmission line of electricity phase number, internal diameter, outer diameter,
D.C. resistance, horizontal distance, conductor height, span centre drift height divide spacing, ground wire shielding angle, division number.
Choosing 1000kV transmission line of electricity is 0 point of reference levels distance, and 500kV transmission line of electricity is on the left of 1000kV, then horizontal
Distance Horiz1=Horiz0-d1, induction line is on the right side of 1000kV, then horizontal distance Horiz2=Horiz0-d2.Tower height is
It is segmented average tower height in LCC moduleConductor height is average in segmentation LCC module
Conductor height VmidAverage arc sag is subtracted for average conductor height.
4) source is applied to working line.It is voltage source and current source that this, which applies source,.The data source of voltage source and current source
According to alive circuit working voltage and transmission power, voltage source is line voltage virtual value, and current source is phase current virtual value, such as
1000kV transmission line of electricity, transmission power 5600MW, when power factor 0.95, voltage source is set as when ATP-EMTP is modeled
1000000V, according to formulaThe current source of calculating is set as 3403.3A.Three phase line
It then needs to define phase sequence angle, driving source is selected according to actual track phase sequence when establishing conductor.Specially select ATP-EMTP
In Sources module in AC source 1&3 module, double-click AC source 1&3 module, carry out Component:AC
Source setting, left end applies source and then selects Type of source for voltage source by the way of voltage source, and voltage is arranged
The amplitude (peak value or virtual value) in source, frequency, phase angle；Frequency is 50HZ, and phase angle is constant；Then one end Jie of voltage source is run
Route head end.The other end applies source and then selects Type of source for current source by the way of current source, and electric current is arranged
The amplitude (peak value or virtual value) in source, frequency, phase angle；Frequency is 50HZ, and phase angle is constant；By one end Jie working line of current source
End.And at the beginning of voltage source or current source are set≤0, dwell time > simulation time T max.
5) simulation time step-length is arranged.Open the ATP-Settings under the ATP module in ATP-EMTP, setting emulation step
Long delta T < 1 × 10-3, simulation time T max > delta T.
Step 3, induced voltage and induced current calculate
Fig. 2 shows the positional diagrams of transmission line of electricity to need when calculating inductive voltage and current:
(1) by the equal short circuit grounding of construction line first and end, the electromagnetic induction electricity under different working line trends can be obtained
Stream.
(2) every route first and end is opened a way, the electrostatic induction voltage under different working line trends can be obtained.
(2) every route short at one end is grounded, the electromagnetism sense under different working line trends can be obtained in other end open circuit
Answer voltage, static induced current.
Finally, carrying out ATP-EMTP model debugging, specific simulation calculation can be carried out later.
1) ATP program is run, checks whether each section of transposition and phase sequence are accurate, if mistake, checks LCC (transmission line of electricity paragraph by paragraph
Module) phase sequence, and correct, until phase sequence is all consistent with design phase sequence.
2) calculation is arranged.When computing electric power line electrostatic induction voltage, the transmission line of electricity of induction needs both ends to open a way；Meter
When calculating transmission line of electricity electromagnetic induction voltage, the transmission line of electricity of induction needs one end to be grounded, one end open circuit；Calculate static induced current
When, the transmission line of electricity of induction needs one end to be grounded, one end open circuit.When calculating em induced current, the transmission line of electricity both ends of induction are equal
It needs to be grounded.
3) since the every phase conductor height of induction line, every phase and working line spacing are different, the induced electricity of induction line
Pressure and electric current need split-phase to detect.
4) probe current subject string is connected in each single-phase power transmission line, by detecting voltage source and is connected in the every of induction
A single-phase power transmission line both ends double-click the content that probe current source setting probe current source is shown, select Steady-state's
Curr/Power selects the Curr.Ampl in Onscreen, then the probe current source shows the electricity passed through after debugging calculating
Flow amplitude.The content that detecting voltage source setting detecting voltage source is shown is double-clicked, the Voltage of Steady-state is selected, selects
U in Onscreen then debugs voltage magnitude and angle that the detecting voltage source after calculating shows simultaneously wiring waypoint.
Induced voltage, electric current under different working line trends can be precisely calculated by above step.
It is emphasized that embodiment of the present invention be it is illustrative, without being restrictive, therefore packet of the present invention
Include and be not limited to embodiment described in specific embodiment, it is all by those skilled in the art according to the technique and scheme of the present invention
The other embodiments obtained, also belong to the scope of protection of the invention.
Claims (9)
1. a kind of emulated computation method of the parallel transmission line of alternation current inductive voltage and current based on ATP-EMTP, including it is following
Step:
Step 1: obtaining electrical basic parameter
Including transmission line parameter, ground wire parameter, transmission tower parameter, soil resistivity parameter along transmission line of electricity, electrification fortune
Row line operating parameter；
Step 2: building ATP-EMTP simulation model
Joined according to soil resistivity along acquired transmission line parameter, ground wire parameter, transmission tower parameter, transmission line of electricity
Number is arranged the transmission line of electricity relevant parameter in ATP-EMTP software, establishes circuit model；According to the charging operation line of acquisition
Road operating parameter establishes voltage source and current source at charging operation transmission line of electricity both ends；
Step 3: induced voltage and induced current calculate
Electrostatic induction voltage, electrostatic induction electricity including calculating parallel transmission line of alternation current according to the simulation model of the step 2
Stream, electromagnetic induction voltage and em induced current.
2. a kind of parallel transmission line of alternation current inductive voltage and current based on ATP-EMTP according to claim 1 is imitative
True calculation method, it is characterised in that: the transmission line parameter includes transmission line of electricity model, internal diameter, outer diameter, D.C. resistance, divides
Split number, division spacing, arc sag, phase sequence.
3. a kind of parallel transmission line of alternation current inductive voltage and current based on ATP-EMTP according to claim 1 is imitative
True calculation method, it is characterised in that: the ground wire parameter includes ground wire model, internal diameter, outer diameter, D.C. resistance, arc sag.
4. a kind of parallel transmission line of alternation current inductive voltage and current based on ATP-EMTP according to claim 1 is imitative
True calculation method, it is characterised in that: the transmission tower parameter includes shaft tower model, height, span, conducting wire is exhaled to hang in shaft tower
Point.
5. a kind of parallel transmission line of alternation current inductive voltage and current based on ATP-EMTP according to claim 1 is imitative
True calculation method, it is characterised in that: the charging operation route operating parameter includes working line voltage class, transmission power.
6. a kind of parallel transmission line of alternation current inductive voltage and current based on ATP-EMTP according to claim 1 is imitative
True calculation method, it is characterised in that: the lumped parameter model in ATP-EMTP may be selected to short distance transmission line of electricity, to over long distances
Transmission line of electricity need to select the distributed parameter model in ATP-EMTP.
7. a kind of parallel transmission line of alternation current inductive voltage and current based on ATP-EMTP according to claim 1 is imitative
True calculation method, it is characterised in that: the voltage source is connected to working line head end, and current source is connected to working line end.
8. a kind of parallel transmission line of alternation current inductive voltage and current based on ATP-EMTP according to claim 1 is imitative
True calculation method, it is characterised in that: when computing electric power line electrostatic induction voltage, the transmission line of electricity of induction needs both ends to open a way；Meter
When calculating transmission line of electricity electromagnetic induction voltage, the transmission line of electricity of induction needs one end to be grounded, one end open circuit；Calculate static induced current
When, the transmission line of electricity of induction needs one end to be grounded, one end open circuit；When calculating em induced current, the transmission line of electricity both ends of induction are equal
It needs to be grounded.
9. a kind of parallel transmission line of alternation current inductive voltage and current based on ATP-EMTP according to claim 8 is imitative
True calculation method, it is characterised in that: the induced voltage and electric current of induction line need split-phase to detect.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109932532A (en) * | 2019-03-18 | 2019-06-25 | 国网内蒙古东部电力有限公司电力科学研究院 | One kind being used for line influence electric test platform and method |
| CN109946566A (en) * | 2019-03-22 | 2019-06-28 | 广东辰誉电力科技有限公司 | A kind of high-pressure parallel transmission line of electricity induced voltage and induced current analysis method |
| CN112711865A (en) * | 2021-01-19 | 2021-04-27 | 国网河北省电力有限公司 | Power transmission line inductive electric simulation refined modeling method |
| CN113688504A (en) * | 2021-07-26 | 2021-11-23 | 南方电网科学研究院有限责任公司 | Parameterized modeling method, system, medium and power terminal for line electromagnetic interference |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109932532A (en) * | 2019-03-18 | 2019-06-25 | 国网内蒙古东部电力有限公司电力科学研究院 | One kind being used for line influence electric test platform and method |
| CN109946566A (en) * | 2019-03-22 | 2019-06-28 | 广东辰誉电力科技有限公司 | A kind of high-pressure parallel transmission line of electricity induced voltage and induced current analysis method |
| CN112711865A (en) * | 2021-01-19 | 2021-04-27 | 国网河北省电力有限公司 | Power transmission line inductive electric simulation refined modeling method |
| CN112711865B (en) * | 2021-01-19 | 2022-09-02 | 国网河北省电力有限公司 | Power transmission line inductive electric simulation refined modeling method |
| CN113688504A (en) * | 2021-07-26 | 2021-11-23 | 南方电网科学研究院有限责任公司 | Parameterized modeling method, system, medium and power terminal for line electromagnetic interference |
| CN113688504B (en) * | 2021-07-26 | 2024-03-22 | 南方电网科学研究院有限责任公司 | Parameterized modeling method, system, medium and power terminal for line electromagnetic interference |
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